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Zur absoluten präzisionsbestimmung von gitterkonstanten mit elektroneninterferenzen am beispiel von thallium-(l)-chlorid

Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences

A technique for the absolute determination of lattice parameters by electron diffraction is described and extensively investigated. The accuracy of the measurement of the Bragg angle ν is tested with Debye-Scherrer diffraction patterns. An improved technique of high-voltage measurement is used in order to obtain very accurate values of the electron wavelength λ. The discussion shows that systematic errors of [formula omitted] and [formula omitted] result. Thus an accuracy of [formula omitted] for the lattic constant a can be claimed. This precision is comparable with that of absolute X-ray methods. The reported technique is used for absolute measurements with T1C1 crystals prepared by vacuum evaporation, having lateral dimensions of about 1000 Å. The lattice constant derived from (100)-, (200)- and (310)-interplanar spacings is in full agreement with the value obtained by-X-ray diffraction. The remaining interplanar spacings which can be evaluated are impaired by lattice distortions and thus yield anomalous values for the lattice constant. © 1964, IEEE. All rights reserved.

["Witt W."]

["16657620200"]

[]

10.1515/zna-1964-1207

Article

German

[{"id": "60028229", "name": "Institut für Angewandte Physik der Universität, Hamburg, Germany", "fullName": "Institut für Angewandte Physik der Universität", "reference": "a", "fullAddress": "Hamburg, Germany", "departmentId": null}]

Second-order properties of an extrapolated bootstrap without replacement under weak assumptions

Bernoulli

This paper shows that a straightforward extrapolation of the bootstrap distribution obtained by resampling without replacement, as considered by Politis and Romano, leads to second-order correct confidence intervals, provided that the resampling size is chosen adequately. We assume only that the statistic of interest T_n, suitably renormalized by a regular sequence, is asymptotically pivotal and admits an Edgeworth expansion on some differentiable functions. The results are extended to a corrected version of the moving-block bootstrap without replacement introduced by Künsch for strong-mixing random fields. Moreover, we show that the generalized jackknife or the Richardson extrapolation of such bootstrap distributions, as considered by Bickel and Yahav, leads to better approximations. © 1997 Chapman & Hall.

["Bertail P."]

["6602932158"]

["bootstrap", "Edgeworth expansion", "generalized jackknife", "random fields", "Richardson extrapolation", "strong mixing", "undersampling"]

10.2307/3318585

Article

English

[{"id": "60003274", "name": "INRA-CORELA, 65 Boulevard de Brandebourg, Ivry/Seine, 94205, France", "fullName": "INRA-CORELA", "reference": "a", "fullAddress": "65 Boulevard de Brandebourg, Ivry/Seine, 94205, France", "departmentId": null}]

A mathematical model of dilution curves for flow study.

Circulation research

["GOTT F.S.", "MOIR T.W.", "MACINTYRE W.J.", "PRITCHARD W.H."]

["24590214200", "7003630642", "7006234580", "7102744428"]

[]

10.1161/01.RES.9.3.607

Article

English

[]

New insight into BRST anomalies in superstring theory

Nuclear Physics, Section B

Based on the extended BRST formalism of Batalin, Fradkin and Vilkovisky, we perform a general algebraic analysis of the BRST anomalies in superstring theory of Neveu-Schwarz-Ramond. Consistency conditions on the BRST anomalies are completely solved. The genuine super-Virasoro anomaly is identified with the essentially unique solution to the consistency condition without any reference to a particular gauge for the 2D supergravity fields. In a configuration space where metric and gravitino fields are properly constructed, the general form of the super-Weyl anomaly is obtained from the super-Virasoro anomaly as its descendant. We give a novel local action of super-Liouville type, which plays a role of Wess-Zumino-Witten term shifting the super-Virasoro anomaly into the super-Weyl anomaly. These results reveal a hierarchical relationship in the BRST anomalies. © 1994.

["Fujiwara T.", "Igarashi Y.", "Koseki M.", "Kuriki R.", "Tabei T."]

["7403542471", "24556539400", "7006077604", "6602398715", "7006133895"]

[]

10.1016/0550-3213(94)90182-1

Article

English

[{"id": "60000099", "name": "Department of Physics, Ibaraki University, Mito, 310, Japan", "fullName": "Department of Physics, Ibaraki University", "reference": "a", "fullAddress": "Mito, 310, Japan", "departmentId": "103039834"}, {"id": "60022313", "name": "Faculty of Education, Niigata University, Niigata, 950-21, Japan", "fullName": "Faculty of Education, Niigata University", "reference": "b", "fullAddress": "Niigata, 950-21, Japan", "departmentId": "104140787"}, {"id": "60022313", "name": "Graduate School of Science and Technology, Niigata University, Niigata, 950-21, Japan", "fullName": "Graduate School of Science and Technology, Niigata University", "reference": "c", "fullAddress": "Niigata, 950-21, Japan", "departmentId": "105235284"}, {"id": "60024784", "name": "Graduate School of Science and Technology, Kanazawa University, Kanazawa, 920-11, Japan", "fullName": "Graduate School of Science and Technology, Kanazawa University", "reference": "d", "fullAddress": "Kanazawa, 920-11, Japan", "departmentId": "104249784"}]

Scaling in the positive plaquette model and universality in SU(2) lattice gauge theory

Nuclear Physics, Section B

We investigate universality, scaling, the β-function and the topological charge in the positive plaquette model for SU(2) lattice gauge theory. Comparing physical quantities, like the critical temperature, the string tension, glueball masses, and their ratios, we explore the effect of a complete suppression of a certain lattice artifact, namely the negative plaquettes, for SU(2) lattice gauge theory. Our result is that this modification does not change the continuum limit, i.e., the universality class. The positive plaquette model and the standard Wilson formulation describe the same physical situation. The approach to the continuum limit given by the β-function in terms of the bare lattice coupling, however, is rather different: the β-function of the positive plaquette model does not show a "dip" like the model with standard Wilson action. © 1995.

["Fingberg J.", "Heller U.M.", "Mitrjushkin V."]

["6701610662", "7005746162", "7004109939"]

[]

10.1016/0550-3213(94)00492-W

Article

English

[{"id": "60002092", "name": "SCRI, Florida State University, Tallahassee, FL 32306-4052, United States", "fullName": "SCRI, Florida State University", "reference": "a", "fullAddress": "Tallahassee, FL 32306-4052, United States", "departmentId": null}, {"id": "60004764", "name": "Institut für Physik, Humboldt- Universität zu Berlin, 10099 Berlin, Germany1 1 Permanent address: Joint Institute for Nuclear Research, Dubna, Russia.", "fullName": null, "reference": "b", "fullAddress": null, "departmentId": "103074056"}]

Emerging challenges: Mobile networking for "smart dust"

Journal of Communications and Networks

Large-scale networks of wireless sensors are becoming increasingly tractable. Advances in hardware technology and engineering design have led to dramatic reductions in size, power consumption and cost for digital circuitry, wireless communications and Micro ElectroMechanical Systems (MEMS). This has enabled very compact, autonomous and mobile nodes, each containing one or more sensors, computation and communication capabilities, and a power supply. The missing ingredient is the networking and applications layers needed to harness this revolutionary capability into a complete system. We review the key elements of the emergent technology of "Smart Dust" and outline the research challenges they present to the mobile networking and systems community, which must provide coherent connectivity to large numbers of mobile network nodes co-located within a small volume.

["Kahn J.M.", "Katz R.H.", "Pister K.S.J."]

["7402544128", "7401788602", "57200829627"]

[]

10.1109/jcn.2000.6596708

Article

English

[{"id": "60025038", "name": "Dept. of Elec. Eng. and Comp. Sci., University of California, Berkeley, CA, United States", "fullName": "Dept. of Elec. Eng. and Comp. Sci., University of California", "reference": "a", "fullAddress": "Berkeley, CA, United States", "departmentId": null}]

Loop quantum gravity on non-compact spaces

Nuclear Physics B

We present a general procedure for constructing new Hilbert spaces for loop quantum gravity on non-compact spatial manifolds. Given any fixed background state representing a non-compact spatial geometry, we use the Gel'fand-Naimark-Segal construction to obtain a representation of the algebra of observables. The resulting Hilbert space can be interpreted as describing fluctuations of compact support around this background state. We also give an example of a state which approximates classical flat space and can be used as a background state for our construction. © 2000 Elsevier Science B.V.

["Arnsdorf M.", "Gupta S."]

["7003620030", "55495202100"]

["04.60.-m", "04.60.Ds"]

10.1016/S0550-3213(00)00196-6

Article

English

[{"id": "60015150", "name": "Blackett Laboratory, Imp. Coll. Sci. Technol. Med., S., London, United Kingdom", "fullName": "Blackett Laboratory, Imp. Coll. Sci. Technol. Med., S.", "reference": "a", "fullAddress": "London, United Kingdom", "departmentId": null}, {"id": "60001439", "name": "Ctr. Gravitational Phys. and Geom., Phys. Dept., Pennsylvania Stt. Univ., University Park, PA 16802, United States", "fullName": "Ctr. Gravitational Phys. and Geom., Phys. Dept., Pennsylvania Stt. Univ.", "reference": "b", "fullAddress": "University Park, PA 16802, United States", "departmentId": "108162500"}]

A fast estimation method for the vector autoregressive moving average model with exogenous variables

Journal of the American Statistical Association

A very fast and simple algorithm for estimation of the parameters of large multivariate time series and distributed lag models is presented. An analysis of the distribution of the estimates shows that they are asymptotically normal and unbiased, and that they have a variance that decreases like 1/n, n being the sample size. The algorithm is especially applicable for estimation of large multivariate models where it is generally many times faster than maximalization algorithms. © 1983 Taylor & Francis Group, LLC.

["Spliid H."]

["6701698110"]

["Dynamic systems", "Fast estimation", "Linear regression", "Multivariate distributed lags", "Multivariate time series", "Vector ARMAX models"]

10.1080/01621459.1983.10477030

Article

English

[{"id": "60011373", "name": "Institute of Mathematical Statistics and Operations Research, Technical University of Denmark, Lyngby, DK-2800, Denmark", "fullName": "Institute of Mathematical Statistics and Operations Research, Technical University of Denmark", "reference": "a", "fullAddress": "Lyngby, DK-2800, Denmark", "departmentId": null}]

Stabilization in superintense fields: A classical interpretation

Physical Review A

A classical approach is used to study the mechanism of the recently discovered suppression of ionization in superintense fields. We show that most features of this suppression occur in a classical context. © 1991 The American Physical Society.

["Grobe R.", "Law C.K."]

["7003632459", "55650251800"]

[]

10.1103/PhysRevA.44.R4114

Article

English

[{"id": "60027165", "name": "Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, United States", "fullName": "Department of Physics and Astronomy, University of Rochester", "reference": "a", "fullAddress": "Rochester, NY 14627, United States", "departmentId": "100249452"}]

Microstrip Filter Design Using Direct EM Field Simulation

IEEE Transactions on Microwave Theory and Techniques

For the first time, we present minimax filter design with electromagnetic (EM) simulations driven directly by a gradient-based optimizer. Challenges of efficiency, discretization of geometrical dimensions, and continuity of optimization variables are overcome by a three-stage attack: 1) efficient on-line response interpolation with respect to geometrical dimensions of microstrip structures simulated with fixed grid sizes; 2) smooth and accurate gradient evaluation for use in conjunction with the proposed interpolation; and 3) storing the results of expensive EM simulations in a dynamically updated database. Simulation of a lowpass microstrip filter illustrates the conventional use of EM simulation for design validation. Design optimization of a double folded stub bandstop filter and of a millimeter-wave 26–40 GHz interdigital capacitor bandpass microstrip filter illustrates the new technique. © 1994 IEEE

["Bandler J.W.", "Biernacki R.M.", "Chen S.H.", "Swanson D.G., Jr.", "Ye S."]

["7102230876", "7007183318", "12806098400", "7201859954", "7202088319"]

[]

10.1109/22.299729

Article

English

[{"id": "60031828", "name": "Optimization Systems Associates Inc., Simulation Optimization Systems Research Laboratory, Department of Electrical and Computer Engineering, McMaster University, Dundas, Hamilton, Ont., Canada", "fullName": "Optimization Systems Associates Inc., Simulation Optimization Systems Research Laboratory, Department of Electrical and Computer Engineering, McMaster University", "reference": "a", "fullAddress": "Dundas, Hamilton, Ont., Canada", "departmentId": "112474515"}, {"id": "60012132", "name": "Watkins-Johnson Company, Palo Alto., CA, United States", "fullName": "Watkins-Johnson Company", "reference": "b", "fullAddress": "Palo Alto., CA, United States", "departmentId": null}, {"id": "60013738", "name": "Optimization Systems Associates Inc., Com Dev Ltd., Dundas, Cambridge, Ont, Canada", "fullName": "Optimization Systems Associates Inc., Com Dev Ltd.", "reference": "c", "fullAddress": "Dundas, Cambridge, Ont, Canada", "departmentId": "115553739"}]

Characterization of standard clocks by means of light rays and freely falling particles

General Relativity and Gravitation

A mathematical characterization of standard clocks (i.e., clocks measuring proper time) is presented, which yields an experimental method to test whether or not a given clock is a standard clock. The only tools needed are light rays and freely falling particles. For this reason our method fits very well in the framework of the axiomatic approach to space-time theory given by Ehlers, Pirani, and Schild [1], where just light rays and freely falling particles are used as primitive concepts. As the underlying space-time model we use a Weyl manifold (instead of a Lorentz manifold, which is the usual model of general relativity); this generalization is motivated by [1]. © 1987 Plenum Publishing Corporation.

["Perlick V."]

["6701673617"]

[]

10.1007/BF00759142

Article

English

[{"id": "60011604", "name": "Institute of Theoretical Physics, TU, Berlin, Berlin 12, Germany", "fullName": "Institute of Theoretical Physics, TU, Berlin", "reference": "a", "fullAddress": "Berlin 12, Germany", "departmentId": "105200708"}]

A Frobenius-Schur theorem for Hopf algebras

Algebras and Representation Theory

We prove a version of the Frobenius-Schur theorem for a finite-dimensional semisimple Hopf algebra H over an algebraically closed field; if the field has characteristic p not 0, H is also assumed to be cosemisimple. Then for each irreducible representation V of H, we define a Schur indicator for V, which reduces to the classical Schur indicator when H is the group algebra of a finite group. We prove that this indicator is 0 if and only if V is not self-dual. If V is self dual, then the indicator is positive (respectively, negative) if and only if V admits a nondegenerate bilinear symmetric (resp., skew-symmetric) H-invariant form. A more general result is proved for algebras with involution.

["Linchenko V.", "Montgomery S."]

["9269259300", "7201648654"]

["Hopf algebras", "Irreducible representations", "Semisimple algebras"]

10.1023/a:1009949909889

Article

English

[{"id": "60029311", "name": "University of Southern California, Los Angeles, CA 90089-1113, United States", "fullName": "University of Southern California", "reference": "a", "fullAddress": "Los Angeles, CA 90089-1113, United States", "departmentId": null}]

An Economic Feasibility Study for a Broadband Virtual Path SONET/ATM Self-Healing Ring Architecture

IEEE Journal on Selected Areas in Communications

The SONET self-healing ring architecture has been widely accepted by Bellcore Client Companies (BCC’s) as a cost-effective survivable network architecture and is being deployed or planned for deployment for both interoffice and loop network applications. Virtual Path (VP)-base ATM technology may reduce SONET ring costs by using its inherent nonhierarchical path multiplexing structure and flexibility for demand rearrangement. In this paper, we discuss an ATM VP ring architecture using point-to-point VP’s and its economic viability, compared to present SONET/STM ring architectures. The add-drop multiplexer (ADM) for the proposed VP ring architecture can be built from today’s SONET ADM by replacing the STS-3 termination cards by the ATM STS-3c line cards. Thus, the proposed ATM VP ring architecture can use existing SONET standard self-healing schemes and protocols for its service protection at the STS-3c level. A case study based on a BCC ring network and the sensitivity analysis suggested that the proposed ATM VP ring architecture may be a cost-effective option for implementing the distributed ring grooming system at the DS 1 level, which is too expensive to be implemented by using today’s STM technology, and the cost savings may be significant (savings up to 26-39% in our case study) when the distributed ring grooming scheme may lower the ring capacity requirement to some transmission line rate breaking point. Considering the factors of economic merits and a cost-effective network evolution path, the proposed VP ring architecture using point-to-point VP’s may result in a potential opportunity for early deployment of SONET/ATM networks, thus facilitating the introduction of future B-ISDN services. © 1992 IEEE

["Wu T.-H.", "Kong D.T.", "Lau R.C."]

["7404815047", "7202350757", "22334096400"]

[]

10.1109/49.184876

Article

English

[{"id": "60023456", "name": "Bellcore, Red Bank, NJ, 07701, United States", "fullName": "Bellcore", "reference": "a", "fullAddress": "Red Bank, NJ, 07701, United States", "departmentId": null}]

Pricing European average rate currency options

Journal of International Money and Finance

This paper develops a simple methodology that yields closed-form analytical approximations for valuing European option claims involving the arithmetic average of future foreign exchange rates. The main advantage of the approach is that it avoids the need to adopt time-consuming numerical procedures. The precision of the resulting formula, and the distributional assumption that underlies it, is examined by way of Monte Carlo simulations. (JEL F31). © 1992.

["Levy E."]

["57202024353"]

[]

10.1016/0261-5606(92)90013-N

Article

English

[{"id": "100448619", "name": "Nomura Bank International plc, London, EC1A 4NP, Nomura House, 1 St Martin's-le-Grand, United Kingdom", "fullName": "Nomura Bank International plc", "reference": "a", "fullAddress": "London, EC1A 4NP, Nomura House, 1 St Martin's-le-Grand, United Kingdom", "departmentId": null}]

Electrons in artificial atoms

Nature

Progress in semiconductor technology has enabled the fabrication of structures so small that they can contain just one mobile electron. By varying controllably the number of electrons in these 'artificial atoms' and measuring the energy required to add successive electrons, one can conduct atomic physics experiments in a regime that is inaccessible to experiments on real atoms.

["Ashoori R.C."]

["6701613316"]

[]

10.1038/379413a0

Review

English

[{"id": "60022195", "name": "Department of Physics, 13-2053, Massachusetts Inst. of Technology, Cambridge, MA 02139, United States", "fullName": "Department of Physics, 13-2053, Massachusetts Inst. of Technology", "reference": "a", "fullAddress": "Cambridge, MA 02139, United States", "departmentId": "109957659"}]

A note on sampling a tape-file

Communications of the ACM

The problem of selecting a random sample of precisely n records from a tape film containing N records sometimes arises in data processing applications. If a means of obtaining a random sample of n integers r₁, r₂, …, r_n selected from the N integers 1, 2, …, N is available, the problem is theoretically simple. All that need be done is to then select the r₁th, r₂th, 舰, r_nth records. © 1962, ACM. All rights reserved.

["Jones T.G."]

["56931495700"]

[]

10.1145/367766.368159

Article

English

[{"id": "60025576", "name": "AFLC, Wright-Patterson Air Force Base, Dayton, OH, United States", "fullName": "AFLC, Wright-Patterson Air Force Base", "reference": "a", "fullAddress": "Dayton, OH, United States", "departmentId": null}]

A possible quark mechanism for the saturation of nuclear matter

Physics Letters B

A nuclear matter saturation mechanism based on the quark structure of the nucleon is proposed. Nuclear matter is described by nucleons and mesons but the meson field modifies the internal quark motion and this induces a saturation mechanism. Its possible relevance for nuclear physics is studied in a schematic model where it is the only active mechanism. Though caricatural, this model provides a rather satisfactory interpretation of the nuclear matter properties. © 1988.

["Guichon P.A.M."]

["7003900557"]

[]

10.1016/0370-2693(88)90762-9

Article

English

[{"id": "60025995", "name": "Institut de Physique Nucléaire (and IN2P3), Université de Lyon-1, F-69622 Villeurbanne Cedex, 43, boulevard du, 11 Novembre 1918, France", "fullName": "Institut de Physique Nucléaire (and IN2P3), Université de Lyon-1", "reference": "a", "fullAddress": "F-69622 Villeurbanne Cedex, 43, boulevard du, 11 Novembre 1918, France", "departmentId": "105912385"}]

Local models with hidden variables for a K⁰K⁰ system

Physics Letters A

It is shown that a peculiar local model with hidden variables can reproduce the results predicted by quantum mechanics, with interference terms, in the case of a K⁰K⁰ system. © 1990.

["Six J."]

["24327567600"]

[]

10.1016/0375-9601(90)90088-6

Article

English

[{"id": "60106017", "name": "Laboratoire de l'Accélérateur Linéaire, IN2P3-CNRS and Université de Paris Sud, 91405 Orsay Cedex, France", "fullName": "Laboratoire de l'Accélérateur Linéaire, IN2P3-CNRS and Université de Paris Sud", "reference": "a", "fullAddress": "91405 Orsay Cedex, France", "departmentId": null}]

A crisis in transplantation: Too much demand for too few organs

Transplantation Reviews

["Tilney N.L."]

["7101898580"]

[]

10.1016/S0955-470X(98)80018-9

Article

English

[{"id": "60002746", "name": "Harvard Medical School Department of Surgery, Brigham and 11 'Omen i Hospital, Bailors LA, United States", "fullName": "Harvard Medical School Department of Surgery, Brigham and 11 'Omen i Hospital", "reference": "a", "fullAddress": "Bailors LA, United States", "departmentId": null}, {"id": "60002746", "name": "Harcard Medical School, Department of Surrey, Brigham and 11 'Omen 's Hospital, Boston, IL 02115, 75 Francis Street, United States", "fullName": "Harcard Medical School, Department of Surrey, Brigham and 11 'Omen 's Hospital", "reference": "b", "fullAddress": "Boston, IL 02115, 75 Francis Street, United States", "departmentId": "123699147"}]

Is there a real estate factor premium?

The Journal of Real Estate Finance and Economics

In this paper, we study the variation of expected returns on five different asset portfolios in a multi-factor model. We found the presence of a real estate factor, in addition to both a stock factor and a bond factor in asset pricing. This suggests that mutual fund managers should seriously consider including real estate assets in their portfolios, since one cannot capture the real estate factor premium without having some kind of real estate exposure. Another result is that the market segmentation found in previous studies disappears in a more general model of asset pricing in which we allow for multi-factors other than the market factor to affect asset returns. This implies that real estate assets can be treated just like other assets as far as mean-variance efficient asset allocations are concerned. We also have some preliminary evidence that equity REITs and the Russell-NCREIF index are driven by the same underlying real estate factor. © 1994 Kluwer Academic Publishers.

["Mei J.", "Lee A."]

["7102430082", "7405629196"]

["latent-variable model", "market segmentation"]

10.1007/BF01099970

Article

English

[{"id": "60021784", "name": "Associate Professor, Department of Finance, Stern School of Business, New York University, New York, 10012, NY, 909 Tisch Hall, United States", "fullName": "Associate Professor, Department of Finance, Stern School of Business, New York University", "reference": "a", "fullAddress": "New York, 10012, NY, 909 Tisch Hall, United States", "departmentId": "118277837"}, {"id": "60005101", "name": "Associate Professor, Department of Economics, Fu-Jen University, Taipei, Taiwan", "fullName": "Associate Professor, Department of Economics, Fu-Jen University", "reference": "b", "fullAddress": "Taipei, Taiwan", "departmentId": "100304214"}]

Serial Cyclization of Peroxy Free Radicals: Models for Polyolefin Oxidation

Journal of the American Chemical Society

["Porter N.A.", "Roe A.N.", "McPhail A.T.", "Gross P.M."]

["7102053613", "36898151100", "35451709900", "16046404900"]

[]

10.1021/ja00545a036

Article

English

[{"id": "60008724", "name": "Chemical Laboratory, Duke University, Durham, North Carolina 27706, United States", "fullName": "Chemical Laboratory, Duke University", "reference": "a", "fullAddress": "Durham, North Carolina 27706, United States", "departmentId": "103482678"}]

Jump discontinuities of semilinear, strictly hyperbolic systems in two variables: Creation and propagation

Communications in Mathematical Physics

The creation and propagation of jump discontinuities in the solutions of semilinear strictly hyperbolic systems is studied in the case where the initial data has a discrete set, {x_i}_i^{=1 n}, of jump discontinuities. Let S be the smallest closed set which satisfies: (i) S is a union of forward characteristics. (ii) S contains all the forward characteristics from the points {x_i}_i^{=1 n}. (iii) if two forward characteristics in S intersect, then all forward characteristics from the point of intersection lie in S. We prove that the singular support of the solution lies in S. We derive a sum law which gives a lower bound on the smoothness of the solution across forward characteristics from an intersection point. We prove a sufficient condition which guarantees that in many cases the lower bound is also an upper bound. © 1981 Springer-Verlag.

["Rauch J.", "Reed M."]

["7102683845", "7401799915"]

[]

10.1007/BF01208895

Article

English

[{"id": "60025778", "name": "Department of Mathematics, University of Michigan, Ann Arbor, 48109, MI, United States", "fullName": "Department of Mathematics, University of Michigan", "reference": "a", "fullAddress": "Ann Arbor, 48109, MI, United States", "departmentId": "104308458"}, {"id": "60008724", "name": "Department of Mathematics, Duke University, Durham, 27706, NC, United States", "fullName": "Department of Mathematics, Duke University", "reference": "b", "fullAddress": "Durham, 27706, NC, United States", "departmentId": "105443492"}]

Estimation and specification testing in female labor participation models: Parametric and semiparametric methods

Econometric Reviews

Female labor participation models have been usually studied through probit and logit specifications. Little attention has been paid to verify the assumptions that are used in these sort of models, basically distributional assumptions and homoskedasticity. In this paper we apply semiparametirc methods in order to test the previous hypothesis. We also estimate a Spanish female labor participation model using both parametric and semiparametirc approaches. The parametirc model includes fixed and random coefficients probit specification. The estimation procedures are parametric maximum likelihood for both probit and logit models, and semiparametric quasi maximum likelihood following Klein and Spady (1993). The results depend cricially in the assumed model. © 1997 by Marcel Dekker, Inc.

["Fernández A.I.", "Rodríguez-Poo J.M."]

["57208994842", "6603612679"]

["Distributional assumptions", "Female labor participation models", "Homoskedasticity test", "Semiparametirc estimation"]

10.1080/07474939708800383

Article

English

[{"id": "60027856", "name": "Department de Econometría, Universidad del País Vasco, Bilbao, 48015, Avda. Lehendakari Aguirre 83, Spain", "fullName": "Department de Econometría, Universidad del País Vasco", "reference": "a", "fullAddress": "Bilbao, 48015, Avda. Lehendakari Aguirre 83, Spain", "departmentId": "125735275"}, {"id": "60015179", "name": "Departamento de Economía, Universidad de Cantabria, Santander, 390005, Avda. de los Castros s/n, Spain", "fullName": "Departamento de Economía, Universidad de Cantabria", "reference": "b", "fullAddress": "Santander, 390005, Avda. de los Castros s/n, Spain", "departmentId": "100294034"}]

On a class of approximative computation methods in the individual risk model

Insurance Mathematics and Economics

Exact calculations in the individual risk model are possible, but are very time consuming. Therefore, a number of recursive methods for approximate computation of the aggregate claims distribution and stop-loss premiums have been developed. In the present paper a general class of such approximation methods is considered, containing the higher order approximations suggested by Kornya, Hipp and De Pril. In this way, the treatment of the different methods is unified and extended to a more general setting. Some new theoretical error bounds are derived, giving a quantitative measure of the accuracy of the approximations. © 1994.

["Dhaene J.", "Pril N.D."]

["6603886649", "24285981800"]

["Aggregate claims distribution", "Applied risk theory", "Approximations", "Error bounds", "Individual model", "Stop-loss premiums"]

10.1016/0167-6687(94)00011-5

Article

English

[{"id": "60025063", "name": "Katholieke Universiteit Leuven, B-3000 Leuven, Dekenstraat 2, Belgium", "fullName": "Katholieke Universiteit Leuven", "reference": "a", "fullAddress": "B-3000 Leuven, Dekenstraat 2, Belgium", "departmentId": null}]

On the fluid approximation to a nonlinear Schrödinger equation

Physics Letters A

We present a heuristic proof that the nonlinear Schrödinger equation (NLS) - iθ{symbol}Ψ θ{symbol}t= 1 2ΔΨ+ 1 2(1-|Ψ|²)Ψ in 2 + 1 dimensions has a family of solutions which can be well approximated by a collection of point vortices for a planar incompressible fluid. The novelty of our approach is that we begin with a representation of the NLS as a compressible perturbation of Euler's equations for hydrodynamics. © 1993.

["Ercolani N.", "Montgomery R."]

["6602476217", "7202664997"]

[]

10.1016/0375-9601(93)90290-G

Article

English

[{"id": "60010065", "name": "Mathematics Department, University of Arizona, Tuczon, AZ 85721, United States", "fullName": "Mathematics Department, University of Arizona", "reference": "a", "fullAddress": "Tuczon, AZ 85721, United States", "departmentId": "105226381"}, {"id": "60024941", "name": "Mathematics Department, University of California, Santa Cruz, CA 95064, United States", "fullName": "Mathematics Department, University of California", "reference": "b", "fullAddress": "Santa Cruz, CA 95064, United States", "departmentId": "104257119"}]

Testing for unit roots and non-linear transformations

Journal of Time Series Analysis

It is well known that the augmented Dickey-Fuller (ADF) test of unit roots in univariate time series is sensitive to non-linear transformations: a common example is when variables expressed in logarithms are found to be stationary, whereas the same variables in levels are found to be non-stationary. In this paper, the effects of non-linear transformations on the ADF auxiliary regression are investigated within the class of the Box-Cox model, and a test of non-linear transformation is developed to assess the adequacy of the ADF regression. The proposed test is computationally simple and is calculated as the t ratio of an added variable in the ADF regression. Cointegration among series which are subject to non-linear transformations is also analysed, and a simple procedure is developed to test the non-linear transformation used in cointegration analysis. Several empirical examples taken from the Nelson-Plosser data set illustrate the practical relevance of the proposed test for univariate series, and a second empirical example is used to illustrate the test of non-linear transformation for cointegrated series.

["Franses P.H.", "Mcaleer M."]

["55960478500", "24370074800"]

["Non-linear transformations", "Unit roots"]

10.1111/1467-9892.00083

Article

English

[]

Model matching approach to discrete-time polynomial optimization problems

Proceedings of the American Control Conference

This paper presents a solution to the H_∞ predictive control problem based on minimax prediction [5] using a technique inspired by the solution of the H_∞, model matching problem [2]. This solution methodology uses a Youla-Kucera parameter to consider only controllers which are in the set of stabilizing controllers. The final form of the equations which define the controller is simplified, resulting in a better numerical solution readily solvable by a generalized eigenvalue problem. © 1998 AACC.

["Gordon P.", "Joseph B."]

["55818448300", "7005816912"]

[]

10.1109/ACC.1998.707347

Conference Paper

English

[{"id": "60000745", "name": "Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, 1206 West Green Street, United States", "fullName": "Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign", "reference": "a", "fullAddress": "Urbana, IL 61801, 1206 West Green Street, United States", "departmentId": "112586264"}]

Mechanism of Dehydroquinase Catalyzed Dehydration. I. Formation of a Schiff Base Intermediate

Journal of the American Chemical Society

["Butler J.R.", "Alworth W.L.", "Nugent M.J."]

["16034996300", "7004142093", "16034758300"]

[]

10.1021/ja00812a069

Letter

English

[{"id": "60017672", "name": "Laboratory of Chemical Biology, Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States", "fullName": "Laboratory of Chemical Biology, Department of Chemistry, Tulane University", "reference": "a", "fullAddress": "New Orleans, Louisiana 70118, United States", "departmentId": "103911385"}]

Multiple solutions for indefinite functionals and applications to asymptotically linear problems

Acta Mathematica Sinica

In this paper, by means of Morse theory of isolated critical points (orbits) we study further the critical points theory of asymptotically quadratic functionals and give some results concerning the existence of multiple critical points (orbits) which generalize a series of previous results due to Amann, Conley, Zehnder and K.C. Chang. As applications, the existence of multiple periodic solutions for asymptotically linear Hamiltonian systems is investigated. And our results generalize some recent ones due to Coti-Zelati, J.Q.Liu, S.Li, etc. © 1989 Springer-Verlag.

["Zhiqiang W."]

["36045768000"]

[]

10.1007/BF02107664

Article

English

[{"id": "60014966", "name": "Department of Mathematics, Peking University, China", "fullName": "Department of Mathematics, Peking University", "reference": "a", "fullAddress": "China", "departmentId": "103769205"}]

Semiparametric estimation of partially linear panel data models

Journal of Econometrics

In this paper we consider estimating a general partially linear semiparametric panel data model, where we allow for some of the regressors to be correlated with the errors. We assume the usual empirical case of N large and T small and as in Robinson (1988) the proposed instrumental variable estimator is shown to be √/N-consistent.

["Li Q.", "Stengos T."]

["8354990500", "6701354830"]

["Instrumental variables", "Panel data", "Partially linear models", "Semiparametric"]

10.1016/0304-4076(94)01711-5

Article

English

[{"id": "60015881", "name": "Department of Economics, University of Guelph, Guelph, Ont. N1G 2W1, Canada", "fullName": "Department of Economics, University of Guelph", "reference": "a", "fullAddress": "Guelph, Ont. N1G 2W1, Canada", "departmentId": "113104991"}]

The θ = π nonlinear sigma model is massless

Nuclear Physics, Section B

We consider here the O(3) nonlinear sigma model in 1 + 1 dimensions with the topological parameter θ = π, which is of considerable interest in quantum field theory as well as the study of chains of half-integral spin. We first define a lattice regulated version of the model and show that it is massless for all values of the coupling g and that it is governed by the k = 1 Wess-zumino-Witten (WZW) fixed point. © 1990.

["Shankar R.", "Read N."]

["7101753390", "56239486800"]

[]

10.1016/0550-3213(90)90437-I

Article

English

[{"id": "60029241", "name": "Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, United States", "fullName": "Institute for Theoretical Physics, University of California", "reference": "a", "fullAddress": "Santa Barbara, CA 93106, United States", "departmentId": "108210903"}, {"id": "60005455", "name": "Center for Theoretical Physics, Yale University, New Haven, CT 06520, United States", "fullName": "Center for Theoretical Physics, Yale University", "reference": "b", "fullAddress": "New Haven, CT 06520, United States", "departmentId": "105190129"}, {"id": "105854612", "name": "Section of Applied Physics, Box 2157, United States", "fullName": "Section of Applied Physics", "reference": "c", "fullAddress": "Box 2157, United States", "departmentId": null}, {"id": "60005455", "name": "Center for Theoretical Physics, Yale University, New Haven, CT 06520, Box 6666, United States", "fullName": "Center for Theoretical Physics, Yale University", "reference": "d", "fullAddress": "New Haven, CT 06520, Box 6666, United States", "departmentId": "105190129"}]

Optical selection studies of radiationless decay in an isolated large molecule

The Journal of Chemical Physics

In this paper we present the results of a theoretical study of the nonradiative decay probability of a single vibronic level of a large isolated molecule. Utilizing Feynman's operator techniques, we were able to derive a theoretical expression of the dependence of the electronic relaxation rate on the excess vibrational energy in the excited electronic state for a "harmonic molecule" which is characterized by displaced potential surfaces. For a large effective electronic energy gap the nonradiative decay probability increases with increasing excess vibrational energy, while for a small energy gap the nonradiative decay in higher vibronic levels may be retarded. Our rough numerical calculations are found to be consistent with recent experimental data on optical selection studies in the isolated benzene molecule.

["Nitzan A.", "Jortner J."]

["7006629956", "35459167700"]

[]

10.1063/1.1676227

Article

English

[{"id": "60005681", "name": "Department of Chemistry, Tel-Aviv University, Tel-Aviv, Israel", "fullName": "Department of Chemistry, Tel-Aviv University", "reference": "a", "fullAddress": "Tel-Aviv, Israel", "departmentId": "100252916"}]

Ensemble methods for phoneme classification

Advances in Neural Information Processing Systems

This paper investigates a number of ensemble methods for improving the performance of phoneme classification for use in a speech recognition system. Two ensemble methods are described; boosting and mixtures of experts, both in isolation and in combination. Results are presented on two speech recognition databases: an isolated word database and a large vocabulary continuous speech database. These results show that principled ensemble methods such as boosting and mixtures provide superior performance to more naive ensemble methods such as averaging.

["Waterhouse S.", "Cook G."]

["6602821843", "7401953858"]

[]

Conference Paper

English

[{"id": "60031101", "name": "Cambridge University, Engineering Department, Cambridge CB2 1PZ, United Kingdom", "fullName": "Cambridge University, Engineering Department", "reference": "a", "fullAddress": "Cambridge CB2 1PZ, United Kingdom", "departmentId": "113885003"}]

Semiclassical calculation of VV and VT rate coeffecients in CO

Chemical Physics

We have calculated 66 rate constants for vibration-vibration (V-V) and vibration-translation/rotation (V-T/R) energy transfer in CO by using a semiclassical collision model. Extensive comparison with experimental data and more approximate theoretical predictions is carried out. © 1981.

["Cacciatore M.", "Due Billing G."]

["12794363700", "24392465000"]

[]

10.1016/0301-0104(81)80074-2

Article

English

[{"id": "60021199", "name": "Centro di Studio per la Chimica dei Plasmi, C.N.R., Instituo di Chimica Generale ed Inorganica, 70126 Bari, Italy", "fullName": "Centro di Studio per la Chimica dei Plasmi, C.N.R., Instituo di Chimica Generale ed Inorganica", "reference": "a", "fullAddress": "70126 Bari, Italy", "departmentId": "104075710"}, {"id": "106027595", "name": "Institute for Chemistry, DK-2200 Copenhagen N, Denmark", "fullName": "Institute for Chemistry", "reference": "b", "fullAddress": "DK-2200 Copenhagen N, Denmark", "departmentId": null}]

An improved method for the recovery of compounds from paper chromatograms

Journal of Chromatography A

["Eshdat Y.", "Mirelman D."]

["7004017782", "7007065850"]

[]

10.1016/S0021-9673(00)92574-3

Article

English

[{"id": "60017563", "name": "Department of Biophysics, The Weizmann Institute of Science, Rehovot, Israel", "fullName": "Department of Biophysics, The Weizmann Institute of Science", "reference": "a", "fullAddress": "Rehovot, Israel", "departmentId": "100288048"}]

Minority electron transport in InP/InGaAs heterojunction bipolar transistors

Applied Physics Letters

Electron transport across the base of InP/InGaAs heterojunction bipolar transistors is examined by Monte Carlo simulation. The base transit times and electron distribution functions are examined as a function of basewidth. Clear ballistic behavior is observed only for extremely thin bases (much less than 100 Å). Over the range of basewidths of interest for devices, base transport appears diffusive, but the electrons are very far from thermal equilibrium. The diffusive behavior is shown to arise from the sensitivity of the steady-state carrier population to small amounts of large-angle scattering.

["Dodd P.", "Lundstrom M."]

["7102400473", "7102771223"]

[]

10.1063/1.107886

Article

English

[{"id": "60009254", "name": "School of Electrical Engineering, Purdue University, West Lafayette, IN 47907, United States", "fullName": "School of Electrical Engineering, Purdue University", "reference": "a", "fullAddress": "West Lafayette, IN 47907, United States", "departmentId": "103505931"}]

Prediction in finite population under error-in-variables superpopulation models

Journal of Statistical Planning and Inference

In this paper we consider the optimal prediction of finite population total and variance under location model with measurement errors. Bayes predictors of population total and variance under a class of priors have been derived and a minimax predictor for population total has been obtained. Under regression superpopulation model with measurement errors, an optimal predictor of population total has been derived. A Bayesian approach for this model shows the linear regression predictor to be a Bayes predictor. © 1994.

["Mukhopadhyay P."]

["7103084838"]

["Bayesian", "measurement error", "minimax", "posterior distribution", "prediction", "risk function", "Superpopulation"]

10.1016/0378-3758(94)90160-0

Article

English

[{"id": "60024948", "name": "Computer Science Unit, Indian Statistical Institute, Calcutta, 700 035, 203 Barrackpore, Trunk Road, India", "fullName": "Computer Science Unit, Indian Statistical Institute", "reference": "a", "fullAddress": "Calcutta, 700 035, 203 Barrackpore, Trunk Road, India", "departmentId": "104257986"}]

Commensurate and incommensurate correlations in Haldane-gap antiferromagnets

Physical Review B - Condensed Matter and Materials Physics

We analyze the onset of incommensurabilities around the VBS point of the (Formula presented) bilinear-biquadratic model. We propose a simple effective field theory which is capable of reproducing all known properties of the commensurate-incommensurate transition at the disorder point (Formula presented) Moreover, the theory predicts another special point (Formula presented) distinct from the VBS point, where the Haldane gap behaves singularly. The ground state energy density is an analytic function of the model parameters everywhere, thus we do not have phase transitions in the conventional sense. © 2000 The American Physical Society.

["Fáth G.", "Sütő A."]

["6603013416", "7003569278"]

[]

10.1103/PhysRevB.62.3778

Article

English

[{"id": "60003548", "name": "Research Institute for Solid State Physics, H-1525 Budapest, P.O. Box 49, Hungary", "fullName": "Research Institute for Solid State Physics", "reference": "a", "fullAddress": "H-1525 Budapest, P.O. Box 49, Hungary", "departmentId": null}]

Security dispatch using the Hopfield neural network

IEE Proceedings: Generation, Transmission and Distribution

A restructuring of the improved Hopfield neural network (NN) approach, which has previously been proposed for solving economic dispatch, is proposed for solving real time economic dispatch problem with security constraints. A new mapping process is formulated and a computational method for obtaining the weights and biases is described using a slack variable technique for handling inequality constraints. Side constraints are handled by a modified activation function for which a symmetric ramp function is chosen for the input-output function and applied to each element of the variable set. The Hopfield NN approach is tested on the IEEE 30-bus system for different demands. © IEE, 1999.

["Yalcinoz T.", "Short M.J.", "Cory B.J."]

["6603062103", "7101631453", "7006527236"]

[]

10.1049/ip-gtd:19990506

Article

English

[{"id": "60004366", "name": "Department of Electrical and Electronic Engineering, Nigde University, Nigde 51100, Turkey", "fullName": "Department of Electrical and Electronic Engineering, Nigde University", "reference": "a", "fullAddress": "Nigde 51100, Turkey", "departmentId": "112959656"}, {"id": "60015150", "name": "Department of Electrical and Electronic Engineering, Imperial College, London SW7 2BT, United Kingdom", "fullName": "Department of Electrical and Electronic Engineering, Imperial College", "reference": "b", "fullAddress": "London SW7 2BT, United Kingdom", "departmentId": "103779492"}]

Practical experience with quality improvement in small companies

Integrated Manufacturing Systems

Over the past few years, SINTEF Industrial Management has carried out several network projects on quality improvement for small- and medium-size enterprises (SMEs). The projects have been conducted according to the standardised SINTEF Quality Improvement Programme (QIP). The main activities of the programme are initial education, planning and organisation of company projects, the reactive problem solving process, company-wide work unit analysis and initiation of a continuous improvement process. This paper focuses on the improvement section of the programme, especially the activities related to the Reactive Problem Solving Conference (RPSC). The article gives an argument for using RSPC and problem solving as early as possible in the programme to increase interest in and understanding of the quality improvement process. An example of a problem-solving process in a SME is described, showing how relatively simple activities are used to improve the production process.

["Neerland H.", "Kvalfors T."]

["6602426330", "6503927576"]

["Kaizen", "Problem solving", "Process management", "Quality management", "Small firms"]

10.1108/09576060010320362

Article

English

[{"id": "60004205", "name": "SINTEF Industrial Management, Trondheim, Norway", "fullName": "SINTEF Industrial Management", "reference": "a", "fullAddress": "Trondheim, Norway", "departmentId": null}]

A Numerical Method for 3-D Eddy Current Problems

Japan Journal of Industrial and Applied Mathematics

An iterative procedure using finite element method without the Lagrange multiplier is proposed for three-dimensional eddy current problems, which is based on an iterative procedure derived from a perturbation problem of the magnetostatic problem. To consider the continuity of an excitation current density, a correction method is also proposed. Numerical results show that the BiConjugate Gradient (BiCG) method is applicable to the complex symmetric linear systems arising in the iterative procedure, and that approximate physical quantities are suitable.

["Kanayama H.", "Tagami D.", "Saito M.", "Kikuchi F."]

["7102333465", "6602191127", "57198414021", "7007168990"]

["BiCG method", "Continuity of excitation current density", "Eddy current problem", "Finite element method", "Iterative procedure", "The Nedelec element"]

10.1007/BF03168593

Article

English

[{"id": "60011047", "name": "Dept. of Intelligent Mach. and Syst., Graduate School of Engineering, Kyushu University, Fukuoka 812-8581, Japan", "fullName": "Dept. of Intelligent Mach. and Syst., Graduate School of Engineering, Kyushu University", "reference": "a", "fullAddress": "Fukuoka 812-8581, Japan", "departmentId": "103597163"}, {"id": "60025272", "name": "Grad. Sch. of Mathematical Sciences, University of Tokyo, Tokyo 153-8914, Japan", "fullName": "Grad. Sch. of Mathematical Sciences, University of Tokyo", "reference": "b", "fullAddress": "Tokyo 153-8914, Japan", "departmentId": "104280234"}]

Metal-insulator transition in the four-dimensional Anderson model

Journal of Physics: Condensed Matter

The metal-insulator transition in the four-dimensional Anderson model is studied numerically using the finite-size-scaling method. Critical disorder is found and the spectrum of Lyapunov exponents of the transfer matrix is shown to change from linear to the third-root shape when the system undergoes the metal-insulator transition. On the basis of our results, we conjecture the dimension dependence of the critical disorder and of the spectrum of Lyapunov exponents for dimension d>2.

["Markos P.", "Henneke M."]

["55931059900", "22992642800"]

[]

10.1088/0953-8984/6/49/001

Article

English

[{"id": "60010330", "name": "Inst. of Phys., Slovak Acad. of Sci., Bratislava, Slovakia", "fullName": "Inst. of Phys., Slovak Acad. of Sci.", "reference": "a", "fullAddress": "Bratislava, Slovakia", "departmentId": "104230136"}]

Metastate approach to thermodynamic chaos

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

In realistic disordered systems, such as the Edwards-Anderson (EA) spin glass, no order parameter, such as the Parisi overlap distribution, can be both translation-invariant and non-self-averaging. The standard mean-field picture of the EA spin glass phase can therefore not be valid in any dimension and at any temperature. Further analysis shows that, in general, when systems have many competing (pure) thermodynamic states, a single state which is a mixture of many of them (as in the standard mean-field picture) contains insufficient information to reveal the full thermodynamic structure. We propose a different approach, in which an appropriate thermodynamic description of such a system is instead based on a metastate, which is an ensemble of (possibly mixed) thermodynamic states. This approach, modeled on chaotic dynamical systems, is needed when chaotic size dependence (of finite volume correlations) is present. Here replicas arise in a natural way, when a metastate is specified by its (meta)correlations. The metastate approach explains, connects, and unifies such concepts as replica symmetry breaking, chaotic size dependence and replica nonindependence. Furthermore, it replaces the older idea of non-self-averaging as dependence on the bulk couplings with the concept of dependence on the state within the metastate at fixed coupling realization. We use these ideas to classify possible metastates for the EA model, and discuss two scenarios introduced by us earlier—a nonstandard mean-field picture and a picture intermediate between that and the usual scaling-droplet picture. © 1997 The American Physical Society.

["Newman C.M.", "Stein D.L."]

["7202990634", "13106245300"]

[]

10.1103/PhysRevE.55.5194

Article

English

[{"id": "60021784", "name": "Courant Institute of Mathematical Sciences, New York University, New York, NY, 10012, United States", "fullName": "Courant Institute of Mathematical Sciences, New York University", "reference": "a", "fullAddress": "New York, NY, 10012, United States", "departmentId": null}, {"id": "60010065", "name": "Department of Physics, University of Arizona, Tucson, AZ, 85721, United States", "fullName": "Department of Physics, University of Arizona", "reference": "b", "fullAddress": "Tucson, AZ, 85721, United States", "departmentId": "110009456"}]

Approach to equilibrium in a moderately dense discrete velocity gas

Physics of Fluids

A discrete velocity model is used to study the approach to equilibrium in a gas in which both binary and ternary collisions occur. It is found that an H-theorem can be shown for the three-particle collision term and that the equilibrium distribution is the analog for the model of the Maxwell-Boltz-mann distribution.

["Harris S."]

["7403485346"]

[]

10.1063/1.1761848

Article

English

[{"id": "60021784", "name": "Courant Institute of Mathematical Sciences, New York University, New York, NY, United States", "fullName": "Courant Institute of Mathematical Sciences, New York University", "reference": "a", "fullAddress": "New York, NY, United States", "departmentId": null}]

The symmetrical maze: An automated closed-field test series for rats

Behavior Research Methods & Instrumentation

An automated "intelligence" test for rats is described. Supporting data indicate that this maze-problem series is sensitive to hypothyroidism-induced learning deficit and sex differences. Comparisons between this new problem set and the Rabinovitch-Rosvold (1951) closed-field tests are presented with respect to difficulty, internal consistency, and test-retest reliability. © 1970 Psychonomic Society, Inc.

["Davenport J.W.", "Hagquist W.W.", "Rankin G.R."]

["7102649888", "6508061912", "55333517200"]

[]

10.3758/BF03211017

Article

English

[{"id": "60032179", "name": "The University of Wisconsin, Madison, 53706, Wisconsin, United States", "fullName": "The University of Wisconsin", "reference": "a", "fullAddress": "Madison, 53706, Wisconsin, United States", "departmentId": null}]

Effective topological spaces II: A hierarchy

Annals of Pure and Applied Logic

This paper (which is the continuation of the preceding paper [7]) is an investigation of definability hierarchies on effective topological spaces. An open subset U of an effective space X is definable iff there is a parameter free definition φ of U so that the atomic predicate symbols of φ are recursively open relations on X. The complexity of a definable open set may be identified with the quantifier complexity of its definition. For example, a set U is an ∃∃∀∃-set if it has an ∃∃∀∃ parameter free definition using only recursively open predicate symbols. Since X is not equipped with a natural pairing apparatus such a U need not be an ∃∀∃-set. Let Σ denote the class of all ∃-sets, ∃∃-sets, ∃∃∃-sets etc. We show that an open set is in Σ iff it is equivalent modulo a nowhere dense set to a recursively enumerable open set (such sets are said to be essentially recursively enumerable or e.r.e.). Thus Σ = e.r.e. Indeed we show the existence of a universal Σ-set as well as the existence of universal sets for higher levels of the definability hierarchy. © 1985.

["Kalantari I.", "Weitkamp G."]

["6603094025", "24428489900"]

[]

10.1016/0168-0072(84)90025-3

Article

English

[{"id": "60010100", "name": "Dept. of Mathematics, Western Illinois University, Macomb, IL 61455, United States", "fullName": "Dept. of Mathematics, Western Illinois University", "reference": "a", "fullAddress": "Macomb, IL 61455, United States", "departmentId": "103553060"}]

An Outcome Space Branch and Bound-Outer Approximation Algorithm for Convex Multiplicative Programming

Journal of Global Optimization

This article presents a new global solution algorithm for Convex Multiplicative Programming called the Outcome Space Algorithm. To solve a given convex multiplicative program (P_D), the algorithm solves instead an equivalent quasiconcave minimization problem in the outcome space of the original problem. To help accomplish this, the algorithm uses branching, bounding and outer approximation by polytopes, all in the outcome space of problem (P_D). The algorithm economizes the computations that it requires by working in the outcome space, by avoiding the need to compute new vertices in the outer approximation process, and, except for one convex program per iteration, by requiring for its execution only linear programming techniques and simple algebra.

["Benson H.P."]

["7103376726"]

["Branch and bound", "Convex multiplicative programming", "Global optimization", "Multiplicative programming", "Nonconvex programming", "Outer approximation"]

10.1023/A:1008316429329

Article

English

[{"id": "60013959", "name": "University of Florida, College of Business Administration, Dept. of Decis. and Info. Sciences, Gainesville, FL 32611-7169, United States", "fullName": "University of Florida, College of Business Administration, Dept. of Decis. and Info. Sciences", "reference": "a", "fullAddress": "Gainesville, FL 32611-7169, United States", "departmentId": "103723093"}]

A global result applicable to nonlinear Steklov problems

Journal of Differential Equations

["Stuart C.A.", "Toland J.F."]

["57223454666", "7006244790"]

[]

10.1016/0022-0396(74)90078-3

Article

English

[{"id": "60017317", "name": "Mathematics Division, University of Sussex, Brighton, BN1 9QH England, United Kingdom", "fullName": "Mathematics Division, University of Sussex", "reference": "a", "fullAddress": "Brighton, BN1 9QH England, United Kingdom", "departmentId": "103898216"}, {"id": "60001359", "name": "Fluid Mechanics Research Institute, Essex University, Colchester, Essex England, United Kingdom", "fullName": "Fluid Mechanics Research Institute, Essex University", "reference": "b", "fullAddress": "Colchester, Essex England, United Kingdom", "departmentId": "103112016"}]

Mining time series data by a fuzzy linguistic summary system

Fuzzy Sets and Systems

In this paper, we are interested in mining the data with natural ordering according to some attributes, and the time series data is one of this kind of data. The problem of mining the time series data is that the quantity at different time may be very close or even equal to each other. To solve this problem, we propose a fuzzy linguistic summary as one of the data mining functions in our KDD (Knowledge Discovery in Databases) system to discover useful knowledge from the database. To help users to premine a database, our system also provides a graphic display tool so that the users can predetermine what knowledge could be discovered from the database. To demonstrate that our system works correctly, we use our system to analyze a time series data problem, the resources usage analysis problem, to predict the utilization ranks of different resources at a specific time. © 2000 Elsevier Science B.V. All rights reserved.

["Chiang D.-A.", "Chow L.R.", "Wang Y.-F."]

["7004319611", "36899837500", "55627855800"]

["A linguistic summary", "Data mining", "Matching degree", "Truth value"]

10.1016/S0165-0114(98)00003-7

Article

English

[{"id": "60018405", "name": "Dept. of Information Engineering, Tamkang University, Tanshui, Taipei, Taiwan", "fullName": "Dept. of Information Engineering, Tamkang University", "reference": "a", "fullAddress": "Tanshui, Taipei, Taiwan", "departmentId": "103945268"}]

The area between two item characteristic curves

Psychometrika

Formulas for computing the exact signed and unsigned areas between two item characteristic curves (ICCs) are presented. It is further shown that when the c parameters are unequal, the area between two ICCs is infinite. The significance of the exact area measures for item bias research is discussed. © 1988 The Psychometric Society.

["Raju N.S."]

["58431792700"]

["item bias", "item characteristic curves", "item response theory"]

10.1007/BF02294403

Article

English

[{"id": "60002873", "name": "Department of Psychology, Illinois Institute of Technology, Chicago, 60616, IL, United States", "fullName": "Department of Psychology, Illinois Institute of Technology", "reference": "a", "fullAddress": "Chicago, 60616, IL, United States", "departmentId": "103197342"}]

Equilibrium theory of strained epitaxial layers

Physical Review B

We develop a simple theory of the equilibrium stability of strained epitaxial layers on a rigid substrate based on a generalization of the continuum theory. Each layer is treated as a continuum elastic medium while the coupling between layers is treated in a discrete manner. Using a periodic parabolic interaction between adjacent layers, we obtain exact numerical results for the stability boundary of the epitaxial phase, (N), expressed as a function of the misfit and the number of layers N. In addition, we develop a variational approach which agrees very well with the exact results. Our method interpolates between a few layers and the thick-film limit of the continuum theory, and in this limit we recover the standard result for the relation between misfit and critical thickness. Considerable deviations from continuum theory can occur in the thin-film limit. For very weak coupling to the substrate, we find (N)N-1/2. The present approach has the advantage of allowing different misfits and elastic constants for each layer and arbitrary variations in the interlayer couplings. © 1989 The American Physical Society.

["Granato E.", "Kosterlitz J.M.", "Ying S.C."]

["7004110056", "7102586368", "13310376000"]

[]

10.1103/PhysRevB.39.3185

Article

English

[{"id": "60012729", "name": "Laborata, Instituto de Pesquisas Espaciais, Brazil, 12201-SA", "fullName": "Laborata, Instituto de Pesquisas Espaciais", "reference": "a", "fullAddress": "Brazil, 12201-SA", "departmentId": "105178892"}, {"id": "60011460", "name": "Department of Physics, Brown University, Providence, Rhode Island 02912", "fullName": "Department of Physics, Brown University", "reference": "b", "fullAddress": "Providence, Rhode Island 02912", "departmentId": "103613027"}]

Almost everywhere convergence of prediction sequence in L_p (1 < p < ∞)

Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete

["Ando T.", "Amemiya I."]

["11043242500", "16534235700"]

[]

10.1007/BF00536745

Article

English

[{"id": "60014652", "name": "Research Institute of Applied Electricity and Department of Mathematics, Hokkaido University, Sapporo, Japan", "fullName": "Research Institute of Applied Electricity and Department of Mathematics, Hokkaido University", "reference": "a", "fullAddress": "Sapporo, Japan", "departmentId": "103759252"}]

Models of competitive learning: Complex dynamics, intermittent conversions, and oscillatory coarsening

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

We present two models of competitive learning, which are respectively interfacial (i.e., where the interiors of domains are unaffected by the rules of the model) and cooperative (i.e., where the bulk as well as the interface of an individual domain is governed by the rules of the model) learning. This learning is outcome related, so that spatially and temporally local environments influence the conversion of a given site between one of two different types. We focus here on the behavior of the models at coexistence, which yields critical behavior and the existence of a phase involving a type of coarsening which is oscillatory in nature. In the discussion we speculate on, among other issues, the likely behavior of the models away from coexistence. © 1999 The American Physical Society.

["Mehta A.", "Luck J.M."]

["7402755085", "22962700200"]

[]

10.1103/PhysRevE.60.5218

Article

English

[{"id": "60026851", "name": "Oxford Physics, Clarendon Laboratory, Oxford, OX1 3PU, Parks Road, United Kingdom", "fullName": "Oxford Physics, Clarendon Laboratory", "reference": "a", "fullAddress": "Oxford, OX1 3PU, Parks Road, United Kingdom", "departmentId": "104359518"}, {"id": "60106131", "name": "Service de Physique Théorique, CEA Saclay, Gif-sur-Yvette cedex, 91191, France", "fullName": "Service de Physique Théorique, CEA Saclay", "reference": "b", "fullAddress": "Gif-sur-Yvette cedex, 91191, France", "departmentId": null}]

Approaches to Studying Formal and Everyday Reasoning

Psychological Bulletin

Reviews the current literature on different types of reasoning, showing little integration across different studies and very little explicit discussion regarding the nature of reasoning. Moreover, most recent theoretical work on deductive and inductive reasoning does not make any explicit connection to everyday reasoning. Major programmatic approaches to the study of reasoning are classified into three types: the componential approach, the rules/heuristics approach, and the mental models/search approach. Strengths and shortcomings of each are reviewed. It is concluded that each approach can potentially play an important role in describing one or more aspects of everyday reasoning. In terms of direct extendability to the description, study, and improvement of everyday reasoning, the mental models/search approach is argued to be the most useful, especially when it incorporates a generalized version of the rules/heuristics approach.

["Galotti K.M."]

["6603730861"]

[]

10.1037/0033-2909.105.3.331

Review

English

[{"id": "60013250", "name": "Department of Psychology, Carleton College, Northfield, MN 55057-4025, One North College Street, United States", "fullName": "Department of Psychology, Carleton College", "reference": "a", "fullAddress": "Northfield, MN 55057-4025, One North College Street, United States", "departmentId": "103693922"}]

A resonant pulse gate drive for high frequency applications

Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

The analysis and implementation of a resonant pulse gate drive are discussed in this paper. The resonant gate drive is based on a simple charge pulse circuit which has conduction and logic losses. The pulse charging and discharging instances are controlled by the user, hence this circuit is applicable to PWM schemas as well as resonant converters. Theoretical analysis of the circuit shows its operation. Detailed equations are presented which describe the inherent losses of the circuit. Simulations shows the predictable nature of the circuit. Experimental results are shown to verify the operation and loss mechanisms. © 1992 IEEE.

["Wiegman H.L.N."]

["6602705065"]

[]

10.1109/APEC.1992.228339

Conference Paper

English

[{"id": "60015623", "name": "General Electric, Corporate Research and Development, Schenectady, 12301, NY, United States", "fullName": "General Electric, Corporate Research and Development", "reference": "a", "fullAddress": "Schenectady, 12301, NY, United States", "departmentId": null}]

Non-gaussian statistics of anomalous diffusion: The DNA sequences of prokaryotes

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

We adopt a non-Gaussian indicator to measure the deviation from Gaussian statistics of a diffusion process generated by dichotomous fluctuations with infinite memory. We also make analytical predictions on the transient behavior of the non-Gaussian indicator as well as on its stationary value. We then apply this non-Gaussian analysis to the DNA sequences of prokaryotes adopting a theoretical model where the “DNA dynamics” are assumed to be determined by the statistical superposition of two independent generators of fluctuations: a generator of fluctuations with no correlation and a generator of fluctuations with infinite correlation “time.” We study also the influence that the finite length of the observed sequences has on the non-Gaussian statistics of diffusion. We find that these non-Gaussian effects are blurred by the joint action of short-range fluctuation and sequence truncation. Nevertheless, under proper conditions, fulfilled by all the DNA sequences of prokaryotes that have been examined, a non-Gaussian signature remains to signal the correlated nature of the driving process. © 1998 The American Physical Society.

["Allegrini P.", "Buiatti M.", "Grigolini P.", "West B.J."]

["7005963297", "7003725435", "57206134008", "7201596535"]

[]

10.1103/PhysRevE.58.3640

Article

English

[{"id": "60028868", "name": "Istituto Nazionale di Fisica della Materia, Unitá di Ricerca di Pisa, Pisa, 2-56100, Piazza Torricelli, Italy", "fullName": "Istituto Nazionale di Fisica della Materia, Unitá di Ricerca di Pisa", "reference": "a", "fullAddress": "Pisa, 2-56100, Piazza Torricelli, Italy", "departmentId": null}, {"id": "60028868", "name": "Dipartimento di Fisica dell’Universitá di Pisa, Pisa, 56100, Piazza Torricelli 2, Italy", "fullName": "Dipartimento di Fisica dell’Universitá di Pisa", "reference": "b", "fullAddress": "Pisa, 56100, Piazza Torricelli 2, Italy", "departmentId": null}, {"id": "60001463", "name": "Istituto di Biofisica del Consiglio Nazionale delle Ricerche, Pisa, 56127, via S. Lorenzo 26, Italy", "fullName": "Istituto di Biofisica del Consiglio Nazionale delle Ricerche", "reference": "c", "fullAddress": "Pisa, 56127, via S. Lorenzo 26, Italy", "departmentId": null}, {"id": "60024438", "name": "Center for Nonlinear Science, University of North Texas, Denton, TX, 76203-5370, P.O. Box 305370, United States", "fullName": "Center for Nonlinear Science, University of North Texas", "reference": "d", "fullAddress": "Denton, TX, 76203-5370, P.O. Box 305370, United States", "departmentId": "104232631"}]

On the restricted step method coupled with the augmented Hessian for the search of stationary points of any continuous function

International Journal of Quantum Chemistry

In any optimization using the augmented Hessian technique, the step is not restricted to any length. Since the restriction of the step at each iteration is very important in order to achieve good convergence, we present a coupled method such that the augmented Hessian automatically gives both the adequate length of the step and the correct Hessian structure. The method is showed for the minima and saddle points of any order. © 1997 John Wiley & Sons, Inc.

["Anglada J.M.", "Bofill J.M."]

["8704701900", "24391860900"]

[]

10.1002/(SICI)1097-461X(1997)62:2<153::AID-QUA3>3.0.CO;2-V

Article

English

[{"id": "60021421", "name": "C.I.D.-C.S.I.C., E-08034 Barcelona, Catalunya, Jordi Girona Salgado 18-26, Spain", "fullName": "C.I.D.-C.S.I.C.", "reference": "a", "fullAddress": "E-08034 Barcelona, Catalunya, Jordi Girona Salgado 18-26, Spain", "departmentId": null}, {"id": "60001576", "name": "Dept. de Quím. Orgàn., Universitat de Barcelona, E-08028 Barcelona, Catalunya, Martí i Franquès 1, Spain", "fullName": "Dept. de Quím. Orgàn., Universitat de Barcelona", "reference": "b", "fullAddress": "E-08028 Barcelona, Catalunya, Martí i Franquès 1, Spain", "departmentId": "110098782"}]

Central limit theorem for degenerate U-statistics of absolutely regular processes with applications to model specification testing

Journal of Nonparametric Statistics

Under quite general conditions we establish a central limit theorem for second order degenerate U-statistics of absolutely regular processes. The new central limit theorem is then used to establish the validity of an asymptotic test for the parametric functional form of a general regression model involving time series.

["Fan Y.", "Li Q."]

["7403492092", "8354990500"]

["Absolutely regular process", "Central limit theorem", "Degenerate U-Statistics", "Model specification test"]

10.1080/10485259908832762

Article

English

[{"id": "60012468", "name": "Department of Economics, University of Windsor, Windsor, Ont. N9B 3P4, Canada", "fullName": "Department of Economics, University of Windsor", "reference": "a", "fullAddress": "Windsor, Ont. N9B 3P4, Canada", "departmentId": "103659777"}, {"id": "60015881", "name": "Department of Economics, University of Guelph, Guelph, Ont. N1G 2W1, Canada", "fullName": "Department of Economics, University of Guelph", "reference": "b", "fullAddress": "Guelph, Ont. N1G 2W1, Canada", "departmentId": "113104991"}]

Structurization of the Covariance Matrix by Process Type and Block-Diagonal Models in the Classifier Design

Informatica

Structurization of the sample covariance matrix reduces the number of the parameters to be estimated and, in a case the structurization assumptions are correct, improves small sample properties of a statistical linear classifier. Structured estimates of the sample covariance matrix are used to decorellate and scale the data, and to train a single layer perception classifier afterwards. In most from ten real world pattern classification problems tested, the structurization methodology applied together with the data transformations and subsequent use of the optimally stopped single layer perception resulted in a significant gain in comparison with the best statistical linear classifier - the regularized discriminant analysis.

["Saudargiene A."]

["56121380200"]

["Covariance matrix", "Dimensionality", "Generalization", "Learning-set size", "Regularized discriminant analysis", "Single layer perception"]

Article

English

[{"id": "60059987", "name": "Inst. of Mathematics and Informatics, 2600 Vilnius, Akademijos 4, Lithuania", "fullName": "Inst. of Mathematics and Informatics", "reference": "a", "fullAddress": "2600 Vilnius, Akademijos 4, Lithuania", "departmentId": null}, {"id": "60042282", "name": "Kaunas University of Technology, Lithuania", "fullName": "Kaunas University of Technology", "reference": "b", "fullAddress": "Lithuania", "departmentId": null}, {"id": "60059987", "name": "Inst. of Mathematics and Informatics, Vilnius, Lithuania", "fullName": "Inst. of Mathematics and Informatics", "reference": "c", "fullAddress": "Vilnius, Lithuania", "departmentId": null}]

The linked inference principle, I: The formal treatment

Journal of Automated Reasoning

In this article we present a detailed, formal treatment of the linked inference principle, and we apply this principle to obtain the abstract formulations of various linked inference rules. Included among such rules are linked UR-resolution, linked hyperresolution, and linked binary resolution, each of which generalizes the corresponding standard and well-known inference rule. In addition to the formalism, we discuss the motivation and objectives for the formulation of linked inference rules. We also include experimental results and numerous examples. In particular, we show how and why the effectiveness of an automated reasoning program can be, and often is, markedly increased by relying on the linked version rather than the more familiar standard version of an inference rule. © 1992 Kluwer Academic Publishers.

["Veroff R.", "Wos L."]

["6602886207", "57207593095"]

["depth-size strategy", "inference rules", "Linked inference rules", "partitioning strategy", "target strategy"]

10.1007/BF00244283

Article

English

[{"id": "60033021", "name": "Department of Computer Science, University of New Mexico, Albuquerque, 87131, NM, United States", "fullName": "Department of Computer Science, University of New Mexico", "reference": "a", "fullAddress": "Albuquerque, 87131, NM, United States", "departmentId": "100257564"}, {"id": "60028609", "name": "Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, 60439-4801, IL, United States", "fullName": "Mathematics and Computer Science Division, Argonne National Laboratory", "reference": "b", "fullAddress": "Argonne, 60439-4801, IL, United States", "departmentId": "104448142"}]

An initial semantics for the μ-calculus on trees and Rabin's complementation lemma

Theoretical Computer Science

In this paper we show that the function associated with any closed or nonclosed term of the μ-calculus on trees can be represented by a recognizable set of trees whose nodes are labeled by letters and by sets of variables. Rabin's complementation lemma is an immediate consequence of this result. © 1995.

["Arnold A."]

["7201370870"]

[]

10.1016/0304-3975(95)00069-9

Article

English

[{"id": "60102125", "name": "LaBRI, Université Bordeaux I, 33405 Talence Cedex, 351 cours de la Libération, France", "fullName": "LaBRI, Université Bordeaux I", "reference": "a", "fullAddress": "33405 Talence Cedex, 351 cours de la Libération, France", "departmentId": null}]

On characterizations and variance bounds of discrete α-unimodality

Statistical Papers

Characterizations of α-unimodality for integer-valued random variables about a specific mode are established in terms of their probability mass functions, distribution functions and characteristic functions. Using these characterizations variance lower bounds in terms of α and the mode are derived. For α=1 all these results are reduced to ordinary unimodality. The new variance lower bounds for discrete unimodality is sharper than its continuous counterpart. An upper bound for the variance of discrete unimodal distribution defined on a finite support is discussed. © 1994 Springer-Verlag.

["Abouammoh A.M.", "Ali A.M.", "Mashhour A.F."]

["6602730670", "25023197400", "6602348767"]

["Characteristic function", "Discrete unimodality", "Lower bounds", "Symmetric relation"]

10.1007/BF02926408

Article

English

[{"id": "60013183", "name": "Department of Statistics and Operations Research, College of Science, King Saud University, Riyadh, 11451, P. O. Box 2455, Saudi Arabia", "fullName": "Department of Statistics and Operations Research, College of Science, King Saud University", "reference": "a", "fullAddress": "Riyadh, 11451, P. O. Box 2455, Saudi Arabia", "departmentId": "103314014"}, {"id": "60012022", "name": "Department of Mathematics, College of Science, Almansoura University, Almansoura, Egypt", "fullName": "Department of Mathematics, College of Science, Almansoura University", "reference": "b", "fullAddress": "Almansoura, Egypt", "departmentId": "103637835"}]

Lower and upper bounds for characteristic functions

Journal of Mathematical Sciences

In the paper, several known inequalities for characteristic functions are sharpened and several new ones are derived. © 1997 Plenum Publishing Corporation.

["Ushakov N.G."]

["55406725400"]

[]

10.1007/BF02398431

Article

English

[{"id": "60009691", "name": "Institute of Microelectronics Technology, 142432 Chernogolovka, Russian Federation", "fullName": "Institute of Microelectronics Technology", "reference": "a", "fullAddress": "142432 Chernogolovka, Russian Federation", "departmentId": null}]

Error estimates for the approximation of a class of variational inequalities

Mathematics of Computation

In this paper, we prove a general approximation theorem useful in obtaining order of convergence estimates for the approximation of the solutions of a class of variational inequalities. The theorem is then applied to obtain an optimal rate of convergence for the approximation of a second-order elliptic problem with convex set K = (v <EHQ(il): v > X a.e. in il). © 1974, American Mathematical Society.

["Falk R.S."]

["7202742869"]

[]

10.1090/S0025-5718-1974-0391502-8

Article

English

[{"id": "60119141", "name": "Department of Mathematics, Rutgers University, New Brunswick, United States", "fullName": "Department of Mathematics, Rutgers University", "reference": "a", "fullAddress": "New Brunswick, United States", "departmentId": "123158424"}]

Fairness in wireless microcellular networks

IEEE Transactions on Vehicular Technology

In the design of cellular and microcellular telecommunication networks, it is common to consider service to subscribers in specific regions by more than a single base station. Although the service overlap provides certain advantages, such as performance improvement achieved in dynamic channel assignment, it results in a large variance in the quality of service across the cells. In this paper, we introduce channel restriction to achieve fairness in the network quality of service. We develop analytical and simulation models for network performance and examine the advantages gained in increased system throughput and reduced probability of handover failure. The numerical results indicate that restricting the number of available channels to users in the overlap region results in considerable improvement in the carried traffic and mean probability of blocking. Finally, we discuss the possibility of substituting or scaling down the guard channels with channel restriction to achieve the desired effect of reduced forced termination. © 1998 IEEE.

["Lagrange X.", "Jabbari B."]

["6603547697", "7004401487"]

["Admission control", "Microcellular systems", "Overlapping cells", "Teletraffic"]

10.1109/25.669085

Article

English

[{"id": "60029116", "name": "Département Réseaux of Ecole, Nationale Supérieure des Télécommunications, Paris, France", "fullName": "Département Réseaux of Ecole, Nationale Supérieure des Télécommunications", "reference": "a", "fullAddress": "Paris, France", "departmentId": "121553938"}, {"id": "60018319", "name": "Department of Electrical Engineering, George Mason University, Fairfax, VA 22030-4444, United States", "fullName": "Department of Electrical Engineering, George Mason University", "reference": "b", "fullAddress": "Fairfax, VA 22030-4444, United States", "departmentId": "105459517"}]

Analytic Solution of Nonlinear Boundary-Value Problems in Several Dimensions by Decomposition

Journal of Mathematical Analysis and Applications

Nonlinear partial differential equations are systematically solved by the decomposition method of G. Adomian for general boundary conditions described by boundary operator equations. Linear partial differential equations and linear or nonlinear ordinary differential equations become special cases all dealt with by a single procedure. © 1993 Academic Press, Inc.

["Adomian G.", "Rach R."]

["7005130073", "16430966500"]

[]

10.1006/jmaa.1993.1105

Article

English

[{"id": "60027210", "name": "General Analytics Corporation, United States", "fullName": "General Analytics Corporation", "reference": "a", "fullAddress": "United States", "departmentId": null}]

More on generalized Heisenberg ferromagnet models

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

We generalize the integrable Heisenberg ferromagnet model according to each Hermitian symmetric spaces and address various new aspects of the generalized model. Using the first order formalism of generalized spins which are defined on the coadjoint orbits of arbitrary groups, we construct a Lagrangian of the generalized model from which we obtain the Hamiltonian structure explicitly in the case of CP(N - 1) orbit. The gauge equivalence between the generalized Heisenberg ferromagnet and the nonlinear Schrödinger models is given. Using the equivalence, we find infinitely many conserved integrals of both models.

["Oh P.", "Park Q.-H."]

["7006672661", "7005414340"]

[]

10.1016/0370-2693(96)00740-X

Article

English

[{"id": "60007511", "name": "Department of Physics, Sung Kyun Kwan University, Suwon, 440-746, South Korea", "fullName": "Department of Physics, Sung Kyun Kwan University", "reference": "a", "fullAddress": "Suwon, 440-746, South Korea", "departmentId": "112884599"}, {"id": "60001873", "name": "Department of Physics, Kyunghee University, Seoul, 130-701, South Korea", "fullName": "Department of Physics, Kyunghee University", "reference": "b", "fullAddress": "Seoul, 130-701, South Korea", "departmentId": "103145867"}]

The quantum symmetry of rational field theories

Theoretical and Mathematical Physics

The quantum symmetry of a rational quantum field theory is a finite-dimensional multi-matrix algebra. Its representation category, which determines the fusion rules and braid group representations of superselection sectors, is a braided monoidal C^*-category. Various properties of such algebraic structures are described, and some ideas concerning the classification programme are outlined. © 1994 Plenum Publishing Corporation.

["Fuchs J."]

["15742068100"]

[]

10.1007/BF01102203

Article

English

[]

Asymptotic solution of the master equation near a nonequilibrium transition: The stationary solutions

Physica A: Statistical Mechanics and its Applications

The time evolution for the logarithm of the probability as derived from the master equation, is expanded in terms of the inverse of the size of the system. The first term of the expansion yields the Hamilton-Jacobi equation studied by Kubo et al.⁷). The second term, which plays a fundamental role in the description of transition phenomena, is retained. In this way, the exact form of the stationary solution for a Schlögl type model is recovered. Taylor expansions around extrema yield approximate stationary solutions both at the transition point as well as above it. © 1980.

["Lemarchand H."]

["6506520986"]

[]

10.1016/0378-4371(80)90192-2

Article

English

[{"id": "60001422", "name": "Laboratoire de Chimie Générale, Université Pierre et Marie Curie, Paris, France", "fullName": "Laboratoire de Chimie Générale, Université Pierre et Marie Curie", "reference": "a", "fullAddress": "Paris, France", "departmentId": "103114669"}]

Survival Reliability of Some Double-Loop Networks and Chordal Rings

IEEE Transactions on Computers

Three of the most well known double-loop networks are the distributed double-loop computer network (0DLCN), the daisy chain, and the braided ring. We compute the exact reliabilities of all three networks. We also extend the results on double-loop networks to directed chordal rings. © 1995 IEEE

["Hwang F.K.", "Wright P.E."]

["24445097900", "7404316104"]

[]

10.1109/12.477253

Article

English

[{"id": "60021378", "name": "AT&T Bell Laboratories, Murray Hills, NJ 07974, United States", "fullName": "AT&T Bell Laboratories", "reference": "a", "fullAddress": "Murray Hills, NJ 07974, United States", "departmentId": null}]

Analysis of the performance of tubular pulsed coil induction launchers

IEEE Transactions on Magnetics

This paper presents a scheme for modelling coil guns using finite elements. The relative motion between the coils and the projectile is modelled by using two distinct meshes which are coupled using Lagrange multipliers which depend on the relative position of the two meshes. This scheme allows the inner mesh to slide during the transient simulation without the need to remesh the problem. Results are presented for a simple experiment involving a single coil and aluminium projectile. © 1993 IEEE

["Leonard P.J.", "Lai H.C.", "Hainsworth G.", "Rodger D.", "Eastham J.F."]

["7103410756", "7201967092", "6602796493", "7006287900", "7103136462"]

[]

10.1109/20.195658

Article

English

[{"id": "60030480", "name": "University of Bath, Claverton Down, BATH BA2 7 AY, United Kingdom", "fullName": "University of Bath", "reference": "a", "fullAddress": "Claverton Down, BATH BA2 7 AY, United Kingdom", "departmentId": null}]

System-based component-test plans and operating characteristics: Binomial data

Technometrics

Component-test plans are often designed by allocating system reliability among the system's components, then choosing individual component plans suitable for demonstrating achievcment of each component's reliability goal. This approach does not consider how much information relative to the system reliability goal is provided by the ensemble of component tests. We consider the notion of system reliability operating characteristic (OC) curves, based on the component tests, and illustrate their use in designing or evaluating an overall test program. By specifying OC values (akin to producer's and consumer's risks), optimum, system-ortented component-test plans can be derived. These ideas are illustrated for a series system, and for a simple series-parallel system, with binomial data. © 1991 American statistical association and the American society for quality control.

["Easterling R.G.", "Spencer F.W.", "Diegert K.V.", "Mazumdar M."]

["7004640870", "7102173749", "6603237184", "57201982087"]

["Component testing", "Reliability allocation", "System reliability"]

10.1080/00401706.1991.10484835

Article

English

[{"id": "60007843", "name": "Statistics, Computing, and Human Factors Division, Sandia National Laboratories, Albuquerque, NM, 87185-5800, United States", "fullName": "Statistics, Computing, and Human Factors Division, Sandia National Laboratories", "reference": "a", "fullAddress": "Albuquerque, NM, 87185-5800, United States", "departmentId": "116165313"}, {"id": "60015543", "name": "Department of industrial Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, United States", "fullName": "Department of industrial Engineering, University of Pittsburgh", "reference": "b", "fullAddress": "Pittsburgh, PA, 15261, United States", "departmentId": "113135874"}]

Renormalisation-group calculation of correlation functions for the 2D random bond Ising and Potts models

Nuclear Physics, Section B

We find the crossover behaviour of the disorder averaged spin-spin correlation function for the 2D Ising and 3-state Potts model with random bonds at the critical point. The procedure employed is the renormalisation approach of the perturbation series around the conformal field theories representing the pure models. We obtain a crossover in the amplitude for the correlation function for the Ising model, which does not change the critical exponent, and a shift in the critical exponent produced by randomness in the case of the Potts model. A comparison with numerical data is discussed briefly. © 1995.

["Dotsenko V.", "Picco M.", "Pujol P."]

["15131477000", "7003919720", "7005195982"]

[]

10.1016/0550-3213(95)00534-Y

Article

English

[{"id": "60001422", "name": "LPTHE, Université Pierre et Marie Curie, PARIS VI, Université Denis Diderot, PARIS VII, Boite 126, Tour 16, premier étage, 4 place Jussieu, F-75252 Paris Cedex 05, France5 5 Laboratoire associé No. 280 au CNRS.", "fullName": null, "reference": "a", "fullAddress": null, "departmentId": null}]

Conformal algebra and multipoint correlation functions in 2D statistical models

Nuclear Physics, Section B

Based on the conformal algebra approach, a general technique is given for the calculation of multipoint correlation functions in 2D statistical models at the critical point. Particular conformal operator algebras are found for operators of the 2D q-component Potts model (1 < q < 4), and the O(N) model (0 < N < 2) at the critical point. A number of four-point correlation functions are calculated for these models. © 1984.

["Dotsenko Vl.S.", "Fateev V.A."]

["15131477000", "7006498356"]

[]

10.1016/0550-3213(84)90269-4

Article

English

[{"id": null, "name": "Nordita, DK-2100 Copenhagen Ø, Blegdamsvej 17, Denmark", "fullName": "Nordita", "reference": "a", "fullAddress": "DK-2100 Copenhagen Ø, Blegdamsvej 17, Denmark", "departmentId": null}, {"id": "60021331", "name": "Landau Institute for Theoretical Physics, Academy of Sciences, the USSR, Moscow, Kosygina 2, Russian Federation", "fullName": "Landau Institute for Theoretical Physics, Academy of Sciences, the USSR", "reference": "b", "fullAddress": "Moscow, Kosygina 2, Russian Federation", "departmentId": null}]

Context dependent probabilistic choice models based on measures of binary advantage

Mathematical Social Sciences

Rotondo has developed a constant utility generalization of Luce's choice model that can handle various examples that contradict the choice model. This paper axiomatizes a generalization of Rotondo's model and discusses unidimensional and multidimensional versions of that generalization; several additional incomplete characterizations of the model are also presented. The class of random advantage models, which generalizes the classical random utility family, is presented and related to the generalized Rotondo model. © 1991.

["Marley A.A.J."]

["7003825949"]

["aggregation", "multidimensional choice", "random utility models", "Stochastic choice"]

10.1016/0165-4896(91)90028-P

Article

English

[{"id": "60002494", "name": "Department of Psychology, McGill University, Montreal, Que. H3A 1B1, 1205 Ave. Dr. Penfield, Canada", "fullName": "Department of Psychology, McGill University", "reference": "a", "fullAddress": "Montreal, Que. H3A 1B1, 1205 Ave. Dr. Penfield, Canada", "departmentId": "103177958"}]

Linac beam loss detection system using self-powered detectors

IEEE Transactions on Nuclear Science

A beam loss detection system employing self-powered gamma detectors to monitor the radiation produced by stray beam has been installed on the 35 MeV linac. The system enables the operator to optimize machine and beam transport parameters to a precision not possible using conventional monitors alone. Copyright © 1968 by The Institute of Electrical and Electronics Engineers, Inc.

["Hewitt J.S.", "Harrigan E.W."]

["23000695900", "56738065100"]

[]

10.1109/TNS.1969.4325088

Article

English

[{"id": "60016849", "name": "Department of Physics, University of Torontc, Toronto 5, Canada", "fullName": "Department of Physics, University of Torontc", "reference": "a", "fullAddress": "Toronto 5, Canada", "departmentId": "105165474"}]

Hertzian contact of anisotropic bodies

Journal of the Mechanics and Physics of Solids

The title problem is reduced, by a Fourier transform method, to one of evaluating contour integrals and some explicit formulae are presented for transversely isotropic media. The theory is then extended to Hertzian impact. Finally, some numerical results are given for the impact of a rigid sphere on a cubic half-space. © 1966.

["Willis J.R."]

["7402588617"]

[]

10.1016/0022-5096(66)90036-6

Article

English

[{"id": "60031101", "name": "Department of Applied Mathematics and Theoretical Physics, University of Cambridge U.K, United Kingdom", "fullName": "Department of Applied Mathematics and Theoretical Physics, University of Cambridge U.K", "reference": "a", "fullAddress": "United Kingdom", "departmentId": null}]

New look at free radical addition to olefins using local reactivity indices

Journal of the Chemical Society. Perkin Transactions 2

Calculations show that the regioselectivity of free radical addition to olefins can be rationalized by using local reactivity indices derived from density functional theory, such as the condensed Fukui functions and atomic softness.

["Chandra A.K.", "Nguyen M.T."]

["35564809100", "7401564839"]

[]

10.1039/a701705g

Article

English

[{"id": "60025063", "name": "Department of Chemistry, University of Leuven, B-3001 Leuven, Celestijnenlaan 200F, Belgium", "fullName": "Department of Chemistry, University of Leuven", "reference": "a", "fullAddress": "B-3001 Leuven, Celestijnenlaan 200F, Belgium", "departmentId": null}]

A graph-aided method for planning two-level experiments when certain interactions are important

Technometrics

In planning a fractional factorial experiment prior knowledge may suggest that some interactions are potentially important and should therefore be estimated free of the main effects. In this article, we propose a graph-aided method to solve this problem for two-level experiments. First, we choose the defining relations for a 2’-k design according to a goodness criterion such as the minimum aberration criterion. Then we construct all of the nonisomorphic graphs that represent the solutions to the problem of simultaneous estimation of main effectsand two-factor interactions for the given defining relations. In each graph a vertex represents a factor and an edge represents the interaction between the two factors. For the experiment planner, the job is simple: Draw a graph representing the specified interactions and compare it with the list of graphs obtained previously. Our approach is a substantial improvement over Taguchi’s linear graphs. © 1992 Taylor & Francis Group, LLC.

["Wu C.F.", "Chen O."]

["57010607700", "57024708000"]

["Clear interaction", "Eligible interaction", "Feasible graphs", "Interaction graphs", "Linear graphs", "Minimum aberration designs"]

10.1080/00401706.1992.10484905

Article

English

[{"id": "60014171", "name": "Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, ON, N2L3Gl, Canada", "fullName": "Department of Statistics and Actuarial Science, University of Waterloo", "reference": "a", "fullAddress": "Waterloo, ON, N2L3Gl, Canada", "departmentId": "103733134"}]

An analytical framework for knowledge-based tuning of servo controllers

Engineering Applications of Artificial Intelligence

This paper investigates the knowledge-based tuner of a two-level control structure in which a crisp servo controller that occupies the lower level is tuned by a fuzzy logic tuner at the upper level. First the knowledge-based tuner is expressed in the conventional fuzzy-logic formulation of a linguistic rule base to which the compositional rule of inference may be applied. Next the concepts of rule dissociation and fuzzy resolution are introduced, and resolution relationships are defined to build an analytical framework for the tuning problem. Stability of the overall control system is discussed in terms of the stability of the original system. Computational requirements for the tuning system are analyzed to show that a substantial reduction in computational effort can be achieved through this analytical framework. An example of tuning a PID controller of a nonminimum-phase plant with transport delay is presented to illustrate the application of the concepts that are developed in the paper. © 1991.

["De Silva C.W."]

["7007032904"]

["controller tuning", "Fuzzy control", "knowledge-based control", "PID control"]

10.1016/0952-1976(91)90014-W

Article

English

[{"id": "60010365", "name": "The University of British Columbia, Vancouver, Canada", "fullName": "The University of British Columbia", "reference": "a", "fullAddress": "Vancouver, Canada", "departmentId": null}]

Variable resolution triangulations

Computational Geometry: Theory and Applications

A comprehensive study of multiresolution decompositions of planar domains into triangles is given. A general model is introduced, called a Multi-Triangulation (MT), which is based on a collection of fragments of triangulations arranged into a directed acyclic graph. Different decompositions of a domain can be obtained by combining different fragments of the model. Theoretical results on the expressive power of the MT are given. An efficient algorithm is proposed that can extract a triangulation from the MT, whose level of detail is variable over the domain according to a given threshold function. The algorithm works in linear time, and the extracted representation has minimum size among all possible triangulations that can be built from triangles in the MT, and that satisfy the given level of detail. Major applications of these results are in real-time rendering of complex surfaces, such as topographic surfaces in flight simulation. © 1998 Elsevier Science B.V. All rights reserved.

["Puppo E."]

["7003800789"]

["Level of detail", "Multiresolution decomposition", "Surface representation", "Triangulation"]

10.1016/S0925-7721(98)00029-7

Article

English

[{"id": "60083090", "name": "Dipto. Info. Sci. dell'Informazione, Università di Genova, 16146 Genova, Via Dodecaneso 35, Italy", "fullName": "Dipto. Info. Sci. dell'Informazione, Università di Genova", "reference": "a", "fullAddress": "16146 Genova, Via Dodecaneso 35, Italy", "departmentId": null}]

Spectroscopic properties of perturbed Ba 6p_3/2ns autoionizing states

Chinese Physics Letters

The excitation spectra, of the Ba 6p_3/2ns (J = 1) autoionizing states with n ranging from 8 to 12 are measured using multistep laser excitation scheme. The measurements manifest that these states are strongly perturbed by the degenerate 6p_1/2nl states, as the resonance profiles are structured according to the corresponding perturbing states. The experimental data are well reproduced by multichannel-quantum-defect theory, with the parameters obtained from a previous R-matrix calculation.

["Lü J.", "Dai C.-J.", "Li C.-Q.", "Liu Z.-D.", "Tang J.-C."]

["57199237908", "7202309627", "36858704300", "55714852800", "7404638972"]

[]

10.1088/0256-307X/16/8/006

Article

English

[{"id": "60003970", "name": "Department of Physics, Zhejiang University, Hangzhou 310027, China", "fullName": "Department of Physics, Zhejiang University", "reference": "a", "fullAddress": "Hangzhou 310027, China", "departmentId": "100263329"}, {"id": "60008745", "name": "CCAST (World Laboratory), Beijing 100080, P. O. Box 8730, China", "fullName": "CCAST (World Laboratory)", "reference": "b", "fullAddress": "Beijing 100080, P. O. Box 8730, China", "departmentId": null}]

Constructing matrix representations of finitely presented groups

Journal of Symbolic Computation

The Todd-Coxeter coset enumeration algorithm is one of the most important tools of computational group theory. It may be viewed as a means of constructing permutation representations of finitely presented groups. In this paper we present an analogous algorithm for directly constructing matrix representations over various fields. In fact the algorithm is more general than this, and can be used to construct matrix representations of finitely generated algebras. The algorithm (with some restrictions) has been implemented as a C program and some results obtained with this implementation are described. © 1991, Academic Press Limited. All rights reserved.

["Linton S.A."]

["57204261410"]

[]

10.1016/S0747-7171(08)80095-8

Article

English

[{"id": "60014264", "name": "Institut für Experimentelle Mathematik, Essen, D4300, Ellernstr. 29, Germany", "fullName": "Institut für Experimentelle Mathematik", "reference": "a", "fullAddress": "Essen, D4300, Ellernstr. 29, Germany", "departmentId": null}]

Controlled disordered patterns and information transfer between coupled neural lattices with oscillatory states

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

The problem of reproduction of spatial images by lattices of oscillating neural units is discussed. We consider that each neuron can be at rest or can oscillate with fixed frequency and that the neurons are coupled electrically by a resistor. Then one layer of neurons, one lattice, is coupled to another similar layer. It is shown that for strong enough interlattice interaction relative to the intralattice diffusion, the shape of the pattern on one lattice is determined uniquely by the image of the other. The reproduction of a stimulus shape is possible even when the number of interlattice couplings is much smaller than the number of neurons in either lattice. Moreover, the spatial features of the images do not depend on the features of the eigenexcitations of the neural lattices, which are discrete, active nonequilibrium media. © 1998 The American Physical Society.

["Nekorkin V.I.", "Kazantsev V.B.", "Rabinovich M.I.", "Velarde M.G."]

["7004468484", "7005605401", "35548393700", "7006090691"]

[]

10.1103/PhysRevE.57.3344

Article

English

[{"id": "60008673", "name": "Radiophysical Department, Nizhny–Novgorod State University, Nizhny–Novgorod, 603600, 23 Gagarin Avenue, Russian Federation", "fullName": "Radiophysical Department, Nizhny–Novgorod State University", "reference": "a", "fullAddress": "Nizhny–Novgorod, 603600, 23 Gagarin Avenue, Russian Federation", "departmentId": "118078188"}, {"id": "60030612", "name": "The University of California, LaJolla, CA, 92093–0402, 9500 Gilman Drive, United States", "fullName": "The University of California", "reference": "b", "fullAddress": "LaJolla, CA, 92093–0402, 9500 Gilman Drive, United States", "departmentId": null}, {"id": "60011774", "name": "Institute of Applied Physics, Russian Academy of Science, Nizhny, Novgorod, 603600, 46 Uljanov Strasse, Russian Federation", "fullName": "Institute of Applied Physics, Russian Academy of Science", "reference": "c", "fullAddress": "Nizhny, Novgorod, 603600, 46 Uljanov Strasse, Russian Federation", "departmentId": null}, {"id": "60027282", "name": "Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, 28040, Paseo Juan XXIII, 1, Spain", "fullName": "Instituto Pluridisciplinar, Universidad Complutense de Madrid", "reference": "d", "fullAddress": "Madrid, 28040, Paseo Juan XXIII, 1, Spain", "departmentId": null}]

Stability analysis of dynamic neural control

Expert Systems with Applications

In this paper, the authors summarize their research related to dynamic neural control. In particular, results on nonlinear system identification, nonlinear trajectory tracking, arid input-to-state stability (ISS) of dynamic neural networks are presented. The main analysis tool utilized is the Lyapunov approach. References for the detailed demonstrations are given. We illustrate the applicability of the results by means of examples. © 1998 Elsevier Science Ltd. All rights reserved.

["Poznyak A.S.", "Yu W.", "Sanchez E.N.", "Perez J.P."]

["35560868600", "55993706000", "7403362669", "35585747000"]

[]

10.1016/s0957-4174(97)00072-9

Article

English

[{"id": "60017323", "name": "CINVESTAV-IPN, Seccion de Control Automatico, Mexico D.F., 07000, Av. IPN 2508, A.P.14-740, Mexico", "fullName": "CINVESTAV-IPN, Seccion de Control Automatico", "reference": "a", "fullAddress": "Mexico D.F., 07000, Av. IPN 2508, A.P.14-740, Mexico", "departmentId": null}, {"id": "60018216", "name": "CINVESTAV, Unidad Guadalajara, Guadalajara, Jalisco, 44550, Apartado Postal 31-438, Mexico", "fullName": "CINVESTAV, Unidad Guadalajara", "reference": "b", "fullAddress": "Guadalajara, Jalisco, 44550, Apartado Postal 31-438, Mexico", "departmentId": "103934446"}, {"id": "60025417", "name": "Math. and Physics Sciences School, Universidad Autonoma de Nuevo Leon, Ciudad Universitaria, N.L. C.P. 66450, Calle Pedro de Alba s/n, Mexico", "fullName": "Math. and Physics Sciences School, Universidad Autonoma de Nuevo Leon, Ciudad Universitaria", "reference": "c", "fullAddress": "N.L. C.P. 66450, Calle Pedro de Alba s/n, Mexico", "departmentId": "104289235"}]

A new approach to approximate reasoning using a fuzzy logic

Fuzzy Sets and Systems

An approach to approximate reasoning based upon fuzzy logic is given. The method has the advantage of being computationally very simple and efficient even for multiple compound implication statements. This efficiency is the result of always processing 'implication linguistic statements' in a simple fuzzy truth space, so allowing for easy pencil and paper calculation. New concepts introduced in this paper are: 1. (i) the definition of a new set of fuzzy truth values 2. (ii) inverse truth functional modification for calculating fuzzy truth value restrictions 3. (iii) approximate reasoning using fuzzy truth value restrictions and an implication composition in truth space. © 1979.

["Baldwin J.F."]

["24433781900"]

["approximate reasoning", "fuzzy logic", "Multi-valued logic"]

10.1016/0165-0114(79)90004-6

Article

English

[{"id": "60020650", "name": "Department of Engineering Mathematics, University of Bristol, United Kingdom", "fullName": "Department of Engineering Mathematics, University of Bristol", "reference": "a", "fullAddress": "United Kingdom", "departmentId": "104050524"}]

Relating the slope of the activation function and the learning rate within a recurrent neural network

Neural Computation

A relationship between the learning rate η in the learning algorithm, and the slope β in the nonlinear activation function, for a class of recurrent neural networks (RNNs) trained by the real-time recurrent learning algorithm is provided. It is shown that an arbitrary RNN can be obtained via the referent RNN, with some deterministic rules imposed on its weights and the learning rate. Such relationships reduce the number of degrees of freedom when solving the nonlinear optimization task of finding the optimal RNN parameters.

["Mandic D.P.", "Chambers J.A."]

["7006513328", "7402475745"]

[]

10.1162/089976699300016340

Article

English

[{"id": "60015150", "name": "Signal Processing Section, Dept. of Elec. and Electron. Eng., Imp. Coll. Sci., Technol. and Med., London, United Kingdom", "fullName": "Signal Processing Section, Dept. of Elec. and Electron. Eng., Imp. Coll. Sci., Technol. and Med.", "reference": "a", "fullAddress": "London, United Kingdom", "departmentId": "103779676"}]

G-stability is equivalent to A-stability

BIT

In 1975 the author showed that a norm (Liapunov function) can be constructed for the stability and error analysis of a linear multistep method (and the related one-leg method) for the solution of stiff non-linear systems, provided that the system satisfies a monotonicity condition and the method possesses a property called G-stability. In this paper it is shown that G-stability is equivalent to A-stability. More generally, a Liapunov function exists if the stability region of the method contains a circle (half-plane), provided that the system satisfies a monotonicity condition related to this circle (half-plane). In the general case this condition depends on the stepsize. © 1978 BIT Foundations.

["Dahlquist G."]

["7004825450"]

[]

10.1007/BF01932018

Article

English

[{"id": "60002014", "name": "Department of Numerical Analysis, Royal Institute of Technology, Stockholm 70, S-100 44, Sweden", "fullName": "Department of Numerical Analysis, Royal Institute of Technology", "reference": "a", "fullAddress": "Stockholm 70, S-100 44, Sweden", "departmentId": "103153316"}]

Tandem Alkylation-Cycloadditions. Control by Transition-Metal Templates

Journal of the American Chemical Society

["Trost B.M.", "Lautens M.", "Hung M.-H.", "Carmichael C.S."]

["57217139833", "57204822274", "7202454812", "15222183900"]

[]

10.1021/ja00336a066

Article

English

[{"id": "60032179", "name": "McElvain Laboratories of Organic Chemistry, Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States", "fullName": "McElvain Laboratories of Organic Chemistry, Department of Chemistry, University of Wisconsin", "reference": "a", "fullAddress": "Madison, Wisconsin 53706, United States", "departmentId": "108213137"}]

Magnetic analog of the mott transition

Chemical Physics Letters

A model hamiltonian with only on-site interactions is introduced and solved for a hypothetical ... LiHLiH... array with variable lattice spacing R. The paramagnetic (large R) system becomes diamagnetic, with a finite magnetic gap, as the bandwidth is increased. The sharp transition is marked by a symmetry change of the exact ground state | ψ〉. © 1979.

["Soos Z.G.", "Bondeson S.R.", "Mazumdar S."]

["7004501184", "6506154834", "22972181400"]

[]

10.1016/0009-2614(79)87076-1

Article

English

[{"id": "60003269", "name": "Department of Chemistry, Princeton University, Princeton, NJ 08540, United States", "fullName": "Department of Chemistry, Princeton University", "reference": "a", "fullAddress": "Princeton, NJ 08540, United States", "departmentId": "100292364"}]

Strong stabilization of MIMO systems via ℋ_∞ optimization

Systems and Control Letters

In this paper, the strong stabilization problem of multivariable linear time-invariant systems is considered. The problem is reduced to a 2-block or 1-block ℋ_∞-optimization problem. The solution of this optimization problem, if satisfying an upper bound constraint which depends on an initial choice of a unimodular transfer function in script R signℋ_∞, would be a stable stabilizing controller to the original system. © 1997 Elsevier Science B.V.

["Saif A.-W.A.", "Gu D.-W.", "Postlethwaite I."]

["7004238204", "36719218400", "35238235600"]

["1-block/2-block model matching problem", "Strong stabilization", "ℋ_∞-optimization"]

10.1016/S0167-6911(97)00039-X

Article

English

[{"id": "60009506", "name": "King Fahd Univ. Petrol. and Minerals, Dhahran 31261, P.O. Box 1626, Saudi Arabia", "fullName": "King Fahd Univ. Petrol. and Minerals", "reference": "a", "fullAddress": "Dhahran 31261, P.O. Box 1626, Saudi Arabia", "departmentId": null}, {"id": "60033125", "name": "Department of Engineering, Leicester University, Leicester LE1 7RH, United Kingdom", "fullName": "Department of Engineering, Leicester University", "reference": "b", "fullAddress": "Leicester LE1 7RH, United Kingdom", "departmentId": "109548459"}]

Variational approach to the Zakharov-Shabat scattering problem

Physical Review E

It is shown that the Zakharov-Shabat scattering problem associated with the inverse scattering transform technique for solving the nonlinear Schrödinger equation can be reformulated as a variational problem. This reformulation makes it possible to use direct variational methods for finding the eigenvalues of the scattering problem, which determines the speed and amplitude of the solitons emerging from a given initial condition. The approach is illustrated by an application to sech-shaped initial conditions. © 1994 The American Physical Society.

["Desaix M.", "Anderson D.", "Lisak M."]

["8667744000", "7410017817", "7005855750"]

[]

10.1103/PhysRevE.50.2253

Article

English

[{"id": "60000990", "name": "Institute for Electromagnetic Field Theory, Chalmers University of Technology, S-412 96 Göteborg, Sweden", "fullName": "Institute for Electromagnetic Field Theory, Chalmers University of Technology", "reference": "a", "fullAddress": "S-412 96 Göteborg, Sweden", "departmentId": "103097546"}]

The Wilcoxon, Ties, and the Computer

Journal of the American Statistical Association

In testing for equality of distribution in two unpaired samples with ordered categorical data or data with many ties, the two sample Wilcoxon average rank test is attractive. Unfortunately, the null distribution of the statistic depends upon the pattern of ties and is generally difficult to compute. In an attempt to improve existing approximations, moments through order four are derived. It is regretted that in small to moderate sample sizes, no consistent improvement over the simple normal approximation was found. The erratic nature of both the values of the statistic and the jumps of the distribution appears to rule out any good, smooth approximation in small samples. For calculation of the exact distribution, an algorithm is given to generate restricted compositions efficiently on a computer. The algorithm provides a useful means of obtaining exact probabilities in many cases. © Taylor & Francis Group, LLC.

["Klotz J.H."]

["7004473356"]

[]

10.1080/01621459.1966.10480904

Article

English

[{"id": "105771688", "name": "University of Wisconsin", "fullName": "University of Wisconsin", "reference": "a", "fullAddress": null, "departmentId": null}]

Purification and developmental analysis of the major anionic peroxidase from the seed coat of glycine max

Plant Physiology

We show that the majority of peroxidase activity in soybean (Glycine max var Williams 82) seeds is localized to the seed coat. A single isozyme is responsible for this activity and has been purified to electrophoretic homogeneity by successive chromatography on DEAE Sepharose Fast Flow, concanavalin A-Sepharose, and Sephadex G-75. The peroxidase exhibits a pl of 4.1, an apparent molecular mass of 37 kilodaltons, and has properties characteristic of a glycoprotein. The enzyme begins to accumulate approximately 21 days after anthesis and continues to do so throughout the maturation of the seed coat where it can represent at least 5% of the soluble protein in dry seed coats. Due to its localization in the seed, we propose that this isozyme may play a role in the hardening of the seed coat.

["Gillikin J.W.", "Graham J.S."]

["6602657740", "7404643257"]

[]

10.1104/pp.96.1.214

Article

English

[{"id": "60018475", "name": "Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, United States", "fullName": "Department of Biological Sciences, Bowling Green State University", "reference": "a", "fullAddress": "Bowling Green, OH 43403, United States", "departmentId": "113512443"}]

That's the way the money goes

New Scientist

["Buchanan M."]

["57197580205"]

[]

Article

English

[{"id": null, "name": "Notre Dame de Courson, France", "fullName": "Notre Dame de Courson", "reference": "a", "fullAddress": "France", "departmentId": null}]

Security of quantum cryptography against individual attacks

Physical Review A - Atomic, Molecular, and Optical Physics

An attempt to eavesdrop on a quantum cryptographic channel reveals itself through errors it inevitably introduces into the transmission. We investigate the relationship between the induced error rate and the maximum amount of information the eavesdropper can extract, in both the two-state B92 [B92 refers to the work of C. H. Bennett, Phys. Rev. Lett. 68, 3121 (1992)] and the four-state BB84 [BB84 refers to the work of C. H. Bennett and G. Brassard, in Proceedings of the IEEE International Conference on Computers, Systems, and Signal Processing, Bangalore, India (IEEE, New York, 1984), pp. 175–179] quantum cryptographic protocols. In each case, the optimal eavesdropping method that on average yields the most information for a given error rate is explicitly constructed. Analysis is limited to eavesdropping strategies where each bit of the quantum transmission is attacked individually and independently from other bits. Subject to this restriction, however, we believe that all attacks not forbidden by physical laws are covered. Unlike previous work, the eavesdropper’s advantage is measured in terms of Renyi (rather than Shannon) information, and with respect only to bits received error-free by Bob (rather than all bits). This alters both the maximum extractable information and the optimal eavesdropping attack. The result can be used directly at the privacy amplification stage of the protocol to accomplish secure communication over a noisy channel. © 1998 The American Physical Society.

["Slutsky B.A.", "Rao R.", "Sun P.-C.", "Fainman Y."]

["6602328798", "55728959400", "57207387243", "7007022066"]

[]

10.1103/PhysRevA.57.2383

Article

English

[{"id": "60030612", "name": "Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA, 92093-0407, Mail Code 0407, 9500 Gilman Drive, United States", "fullName": "Department of Electrical and Computer Engineering, University of California, San Diego", "reference": "a", "fullAddress": "La Jolla, CA, 92093-0407, Mail Code 0407, 9500 Gilman Drive, United States", "departmentId": "108076796"}]

Machine vision inspection of 'golden delicious' apples

Applied Engineering in Agriculture

A machine vision system was developed to form a basis for single-pass quality feature inspection and grading of 'Golden Delicious' apples. The inspection criteria were based on USD A standards for fresh market apples. Image analysis algorithms were developed to assess and quantify the quality features of color, shape, and russet. Over 300 'Golden Delicious' apples were inspected by the machine vision system and the results were compared to a human inspector. The vision system was able to correctly classify 100% of the apples for color, 92.3% for shape, and 82.5% for russetting.

["Heinemann P.H.", "Varghese Z.A.", "Morrow C.T.", "Sommer III H.J.", "Crassweller R.M."]

["7003692038", "57197684510", "7202133014", "7202895441", "6602486770"]

["Apples", "Grading", "Inspection", "Machine vision", "Quality evaluation"]

Article

English

[{"id": "60001439", "name": "Dept. of Agricultural and Biological Engineering, Pennsylvania State University, PA 16802, 220 Agricultural Engineering Building, University Park", "fullName": "Dept. of Agricultural and Biological Engineering, Pennsylvania State University", "reference": "a", "fullAddress": "PA 16802, 220 Agricultural Engineering Building, University Park", "departmentId": "100290047"}, {"id": "60001439", "name": "Dept. of Mechanical Engineering, Pennsylvania State University, University Park", "fullName": "Dept. of Mechanical Engineering, Pennsylvania State University", "reference": "b", "fullAddress": "University Park", "departmentId": "105187982"}, {"id": "60001439", "name": "Dept. of Horticulture, Pennsylvania State University, University Park", "fullName": "Dept. of Horticulture, Pennsylvania State University", "reference": "c", "fullAddress": "University Park", "departmentId": "100303463"}]

Analysis of a Coaxial-to-Waveguide Adaptor Including a Discended Probe and a Tuning Post

IEEE Transactions on Microwave Theory and Techniques

A field matching analysis of a coaxial-to-waveguide adaptor incorporating a disc-ended probe and a tuning post is presented. In this analysis, the tuning post is considered as a short-circuited second probe. A computer algorithm for calculating the input impedance of this structure is developed. This algorithm is used to investigate and improve the operation of a commercially available coaxial-to-waveguide adaptor. © 1995 IEEE

["Bialkowski M.E."]

["57204245579"]

[]

10.1109/22.348094

Article

English

[{"id": "60031004", "name": "Department of Electrical and Computer Engineering, The University of Queensland, St. Lucia, Queensland 4072, Australia", "fullName": "Department of Electrical and Computer Engineering, The University of Queensland", "reference": "a", "fullAddress": "St. Lucia, Queensland 4072, Australia", "departmentId": "113050156"}]

College has found strong demand for training programmes

BMJ

["Peyton R."]

["57067735900"]

[]

10.1136/bmj.312.7041.1301c

Letter

English

[{"id": "60008659", "name": "Royal College of Surgeons of England, London WC2A 3PN, United Kingdom", "fullName": "Royal College of Surgeons of England", "reference": "a", "fullAddress": "London WC2A 3PN, United Kingdom", "departmentId": null}]

Theory of quantum error correction for general noise

Physical Review Letters

A measure of quality of an error-correcting code is the maximum number of errors that it is able to correct. We show that a suitable notion of “number of errors” e makes sense for any quantum or classical system in the presence of arbitrary interactions. Thus, e-error-correcting codes protect information without requiring the usual assumptions of independence. We prove the existence of large codes for both quantum and classical information. By viewing error-correcting codes as subsystems, we relate codes to irreducible representations of operator algebras and show that noiseless subsystems are infinite-distance error-correcting codes. © 2000 The American Physical Society.

["Knill E.", "Laflamme R.", "Viola L."]

["57204372419", "56234046800", "35370022600"]

[]

10.1103/PhysRevLett.84.2525

Article

English

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