cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pairing correlations and odd-even staggering in reaction cross sections of weakly bound nuclei
Creators: name: Hagino, K.
name: Sagawa, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We investigate the odd-even staggering (OES) in reaction cross sections of weakly bound nuclei with a Glauber theory, taking into account the pairing correlation with the Hartree-Fock-Bogoliubov (HFB) method. We first discuss the pairing gap in extremely weakly bound nuclei and show that the pairing gap persists in the limit of zero separation energy limit even for single-particle orbits with the orbital angular momenta $l=0$ and $l=1$. We then introduce the OES parameter defined as the second derivative of reaction cross sections with respect to the mass number, and clarify the relation between the magnitude of OES and the neutron separation energy. We find that the OES parameter increases considerably in the zero separation energy limit for $l=0$ and $l=1$ single-particle states, while no increase is found for higher angular momentum orbits with {\it e.g.,} $l=3$. We point out that the increase of OES parameter is also seen in the experimental reaction cross sections for Ne isotopes, which is well accounted for by our calculations.
description: 9 pages, 7 figures
International investment and the environment: an analysis of the multilateral agreement on investment
Creators: name: McIntosh, Lee Michelle
Publisher: name: Law
Year: 1999
Subjects: subject: K3830.4 .M35 1999A
subject: Additional Copy: K3830.4 .M35 1999 in Law Library, 1st floor.
subject: Investments, foreign--environmental aspects
subject: Investments, foreign--law and legislation
subject: Investments, foreign--international law
subject: Investments, foreign--international cooperation
subject: Sustainable development

description: Bibliography: p. 222-237
Recent developments in the search for Compton-thick AGN
Creators: name: Georgantopoulos, I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: I present a review of X-ray and mid-IR surveys for Compton-thick Active Galactic Nuclei (AGN). These are the most highly obscured sources having hydrogen column densities >1.5x10^24 cm-2. Key surveys in the local Universe are presented including the high energy SWIFT/BAT and INTEGRAL surveys, mid-IR and also optical surveys. Recently, deep X-ray surveys with Chandra and XMM-Newton have produced a number of candidate Compton-thick AGN at higher redshift primarily in the Chandra Deep Field South region. In addition, mid-IR surveys with Spitzer have helped to develop novel complementary techniques for the selection of Compton-thick AGN. The mid-IR techniques used to identify Compton-thick AGN include: a) 24 micron excess sources relative to their optical emission b) Spitzer spectroscopy for the detection of high optical depth Si 9.7 micron absorption features c) low X-ray to 6 micron luminosity ratio.
description: to appear in 'International Journal of Modern Physics D', Invited talk in the Third Galileo - Xu Guangqi meeting, Beijing, China, October 11-15 2011
Nodal domains of a non-separable problem - the right angled isosceles triangle
Creators: name: Aronovitch, Amit
name: Band, Ram
name: Fajman, David
name: Gnutzmann, Sven
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Pxx, 58C40, 58J50

description: We study the nodal set of eigenfunctions of the Laplace operator on the right angled isosceles triangle. A local analysis of the nodal pattern provides an algorithm for computing the number of nodal domains for any eigenfunction. In addition, an exact recursive formula for the number of nodal domains is found to reproduce all existing data. Eventually we use the recursion formula to analyse a large sequence of nodal counts statistically. Our analysis shows that the distribution of nodal counts for this triangular shape has a much richer structure than the known cases of regular separable shapes or completely irregular shapes. Furthermore we demonstrate that the nodal count sequence contains information about the periodic orbits of the corresponding classical ray dynamics.
A raven among the raintrees: The plight and recovery of native foster children in april raintree and keeper'n me
Creators: name: McKenzie, Gayle
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: PS 8553 U455 I5236 2000
subject: Culleton, Beatrice, 1949 - In search of April Raintree
subject: Wagamese, Richard. Keeper'n me
subject: Indian foster children - Canada

description: Bibliography: p. 127-137
General Methodology for developing UML models from UI
Creators: name: Reddy, Ch Ram Mohan
name: Geetha, D. Evangelin
name: Srinivasa, K. G.
name: Kumar, T. V. Suresh
name: Kanth, K. Rajani
Publisher: name: arXiv
Year: 2012
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In recent past every discipline and every industry have their own methods of developing products. It may be software development, mechanics, construction, psychology and so on. These demarcations work fine as long as the requirements are within one discipline. However, if the project extends over several disciplines, interfaces have to be created and coordinated between the methods of these disciplines. Performance is an important quality aspect of Web Services because of their distributed nature. Predicting the performance of web services during early stages of software development is significant. In Industry, Prototype of these applications is developed during analysis phase of Software Development Life Cycle (SDLC). However, Performance models are generated from UML models. Methodologies for predicting the performance from UML models is available. Hence, In this paper, a methodology for developing Use Case model and Activity model from User Interface is presented. The methodology is illustrated with a case study on Amazon.com.
description: 16 pages,14 figures
Why is Helfenstein's claim about equichordal points false?
Creators: name: Rychlik, Marek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 52A10, 34K19

description: This article explains why a paper by Heinz G. Helfenstein entitled "Ovals with equichordal points", published in J.London Math.Soc.31, 54-57, 1956, is incorrect. We point out a computational error which renders his conclusions invalid. More importantly, we explain that the method cannot be used to solve the equichordal point problem with the method presented there. Today, there is a solution to the problem: Marek R. Rychlik, "A complete solution to the equichordal point problem of Fujiwara, Blaschke, Rothe and Weizenböck", Inventiones Mathematicae 129 (1), 141-212, 1997. However, some mathematicians still point to Helfenstein's paper as a plausible path to a simpler solution. We show that Helfenstein's method cannot be salvaged. The fact that Helfenstein's argument is not correct was known to Wirsing, but he did not explicitly point out the error. This article points out the error and the reasons for the failure of Helfenstein's approach in an accessible, and hopefully enjoyable way.
description: 24 pages, 3 figures
Decay studies of $^{288-287}115$ alpha-decay chains
Creators: name: Kumar, Sushil
name: Thakur, Shagun
name: Kumar, Rajesh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The $α$-decay chains of $^{288-287}115$ are studied along with the possible cluster decay modes by using the preformed cluster model (PCM). The calculated $α$-decay half-lives are compared with experimental data and other model calculations. The calculated Q-values, penetration probabilities and preformation probabilities factors for $α$-decay suggest that $^{283}_{170}113$,$^{287}_{172}115$ and $^{272}_{165}107$ parent nuclei are more stable against the $α$-decay. These alpha decay chains are further explored for the possibilities of cluster decay. Decay half lives of different cluster from different nuclei of the decay chains point to the extra stability near or at the deformed shells Z=108, N=162 and Z=100, N=152. The decay half-lives for $^{14}C$ and $^{48}Ca$ clusters are lower than the current experimental limit ($\approx$ $10^{28}$sec).
Bronchial responsiveness profile of provincial level speed skaters throughout a competitive season
Creators: name: Hooper, Christopher C.
Publisher: name: Kinesiology
Year: 1999
Subjects: subject: RC 1220 S64 H66 1999
subject: Speed skating - Physiological aspects
subject: Exercise - Physiological aspects
subject: Respiration - Effect of exercise on
subject: Bronchial spasm
subject: Asthma

description: Bibliography: p. 105-131
description: UARC
An eigenvalue problem for the associated Askey-Wilson polynomials
Creators: name: Bruder, Andrea
name: Krattenthaler, Christian
name: Suslov, Sergei K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 33D45, 42C10, Secondary 33D15

description: To derive an eigenvalue problem for the associated Askey-Wilson polynomials, we consider an auxiliary function in two variables which is related to the associated Askey-Wilson polynomials introduced by Ismail and Rahman. The Askey-Wilson operator, applied in each variable separately, maps this function to the ordinary Askey-Wilson polynomials with different sets of parameters. A third Askey-Wilson operator is found with the help of a computer algebra program which links the two, and an eigenvalue problem is stated.
description: AmS-LaTeX; 15 pages
Simple quantum error detection and correction for superconducting qubits
Creators: name: Keane, Kyle
name: Korotkov, Alexander N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze simple quantum error detection and quantum error correction protocols relevant to current experiments with superconducting qubits. We show that for qubits with energy relaxation the repetitive N-qubit codes cannot be used for quantum error correction, but can be used for quantum error detection. In the latter case it is sufficient to use only two qubits for the encoding. In the analysis we demonstrate a useful technique of unraveling the qubit energy relaxation into "relaxation" and "no relaxation" scenarios. Also, we propose and numerically analyze several two-qubit algorithms for quantum error detection/correction, which can be readily realized at the present-day level of the phase qubit technology.
description: 14 pages, 8 figures
TAGC: Optimizing Gradient Communication in Distributed Transformer Training
Creators: name: Polyakov, Igor
name: Dukhanov, Alexey
name: Spirin, Egor
Publisher: name: arXiv
Year: 2025
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: I.2.6; C.2.4; I.2.11

description: The increasing complexity of large language models (LLMs) necessitates efficient training strategies to mitigate the high computational costs associated with distributed training. A significant bottleneck in this process is gradient synchronization across multiple GPUs, particularly in the zero-redundancy parallelism mode. In this paper, we introduce Transformer-Aware Gradient Compression (TAGC), an optimized gradient compression algorithm designed specifically for transformer-based models. TAGC extends the lossless homomorphic compression method by adapting it for sharded models and incorporating transformer-specific optimizations, such as layer-selective compression and dynamic sparsification. Our experimental results demonstrate that TAGC accelerates training by up to 15% compared to the standard Fully Sharded Data Parallel (FSDP) approach, with minimal impact on model quality. We integrate TAGC into the PyTorch FSDP framework, the implementation is publicly available at https://github.com/ipolyakov/TAGC.
Designing genes: the moral permissibility of germ line genetic engineering
Creators: name: Dolgetta, Speranza
Publisher: name: University of Calgary
Year: 1999
Subjects: subject: QH442 .D65 1999
subject: Genetic engineering--moral and ethical aspects
subject: Medical genetics--moral and ethical aspects
subject: Medical ethics
subject: Bioethics

description: Bibliography: p. 122-126
The global trend of health care restructuring: the cases of Alberta, Canada and Ghana, West Africa
Creators: name: Dunham, Laura Jean
Publisher: name: University of Calgary
Year: 1999
Subjects: subject: RA395 .C3 D86 1999
subject: Health care reform--Alberta
subject: Health care reform--Ghana
subject: Medical policy--Alberta
subject: Medical policy--Ghana
subject: Globalization

description: Bibliography: p. 223-239
Global existence and collisions for symmetric configurations of nearly parallel vortex filaments
Creators: name: Banica, Valeria
name: Miot, Evelyne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the Schrödinger system with Newton-type interactions that was derived by R. Klein, A. Majda and K. Damodaran [18] to modelize the dynamics of N nearly parallel vortex filaments in a 3-dimensional homogeneous incompressible uid. The known large time existence results are due to C. Kenig, G. Ponce and L. Vega [17] and concern the interaction of two filaments and particular configurations of three filaments. In this article we prove large time existence results for particular configurations of four nearly parallel filaments and for a class of configurations of N nearly parallel filaments for any N\geq 2. We also show the existence of travelling wave type dynamics. Finally we describe configurations leading to collision.
description: 21 pages
PIONIER: a 4-telescope visitor instrument at VLTI
Creators: name: Bouquin, Jean-Baptiste Le
name: Berger, J. -P.
name: Lazareff, B.
name: Zins, G.
name: Haguenauer, P.
name: Jocou, L.
name: Kern, P.
name: Millan-Gabet, R.
name: Traub, W.
name: Absil, O.
name: Augereau, J. -C.
name: Benisty, M.
name: Blind, N.
name: Bonfils, X.
name: Bourget, P.
name: Delboulbe, A.
name: Feautrier, P.
name: Germain, M.
name: Gitton, P.
name: Gillier, D.
name: Kiekebusch, M.
name: Kluska, J.
name: Knudstrup, J.
name: Labeye, P.
name: Lizon, J. -L.
name: Monin, J. -L.
name: Magnard, Y.
name: Malbet, F.
name: Maurel, D.
name: Menard, F.
name: Micallef, M.
name: Michaud, L.
name: Montagnier, G.
name: Morel, S.
name: Moulin, T.
name: Perraut, K.
name: Popovic, D.
name: Rabou, P.
name: Rochat, S.
name: Rojas, C.
name: Roussel, F.
name: Roux, A.
name: Stadler, E.
name: Stefl, S.
name: Tatulli, E.
name: Ventura, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: PIONIER stands for Precision Integrated-Optics Near-infrared Imaging ExpeRiment. It combines four 1.8m Auxilliary Telescopes or four 8m Unit Telescopes of the Very Large Telescope Interferometer (ESO, Chile) using an integrated optics combiner. The instrument has been integrated at IPAG starting in December 2009 and commissioned at the Paranal Observatory in October 2010. It provides scientific observations since November 2010. In this paper, we detail the instrumental concept, we describe the standard operational modes and the data reduction strategy. We present the typical performance and discuss how to improve them. This paper is based on laboratory data obtained during the integrations at IPAG, as well as on-sky data gathered during the commissioning at VLTI. We illustrate the imaging capability of PIONIER on the binaries deltaSco and HIP11231. PIONIER provides 6 visibilities and 3 independent closure phases in the H band, either in a broadband mode or with a low spectral dispersion (R=40), using natural light (i.e. unpolarized). The limiting magnitude is Hmag=7 in dispersed mode under median atmospheric conditions (seeing<1", tau0>3ms) with the 1.8m Auxiliary Telescopes. We demonstrate a precision of 0.5deg on the closure phases. The precision on the calibrated visibilities ranges from 3 to 15% depending on the atmospheric conditions. PIONIER has been installed and successfully tested as a visitor instrument for the VLTI. It permits high angular resolution imaging studies at an unprecedented level of sensitivity. The successful combination of the four 8m Unit Telescopes in March 2011 demonstrates that VLTI is ready for 4-telescope operation.
Asymptotic latent solitons, black strings and black branes in f(R)-gravity
Creators: name: Eingorn, Maxim
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate nonlinear f(R) theories in the Kaluza-Klein models with toroidal compactification of extra dimensions. A point-like matter source has the dust-like equation of state in our three dimensions and nonzero equations of state in the extra dimensions. We obtain solutions of linearized Einstein equations with this matter source taking into account effects of nonlinearity of the model. There are two asymptotic regions where solutions satisfy the gravitational tests at the same level of accuracy as General Relativity. According to these asymptotic regions, there are two classes of solutions. We call these solutions asymptotic latent solitons. The asymptotic latent solitons from the first class generalize the known result of the linear theory. The asymptotic black strings and black branes are particular cases of these asymptotic solutions. The second class of asymptotic solitons exists only in multidimensional nonlinear models. The main feature for both of these classes of solutions is that the matter sources have tension in the extra dimensions.
description: RevTex4 5 pages, no figures
MPEC 2023-W124 : 2023 WF3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 WF3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Conflict or collaboration?: a study of press coverage of the 1993 and 1997 Alberta provincial elections
Creators: name: Klinkhammer, Ruth
Publisher: name: University of Calgary
Year: 1999
Subjects: subject: PN4914 .P6 K59 1999
subject: Journalism--political aspects--Alberta
subject: Press and politics--Alberta
subject: Elections - Alberta

description: Bibliography: p. 155-162
The Conley-Zehnder indices of the rotating Kepler problem
Creators: name: Albers, Peter
name: Fish, Joel W.
name: Frauenfelder, Urs
name: van Koert, Otto
Publisher: name: arXiv
Year: 2012
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We determine the Conley-Zehnder indices of all periodic orbits of the rotating Kepler problem for energies below the critical Jacobi energy. Consequently, we show the universal cover of the bounded component of the regularized energy hypersurface is dynamically convex. Moreover, in the universal cover there is always precisely one periodic orbit with Conley-Zehnder index 3, namely the lift of the doubly covered retrograde circular orbit.
description: 18 pages, 3 figures
A developmental look at adolescent needs
Creators: name: Couture, Shari
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: LB1135 .C68 2000
subject: Adolescents--Alberta--Calgary
subject: Needs assessment - Alberta - Calgary
subject: Youth - Alberta - Calgary
subject: Junior high school students - Attitudes
subject: High school students - Attitudes
subject: Counselling in secondary education--Alberta

description: Bibliography: p. 163-176
What if Dark Matter Gamma-Ray Lines come with Gluon Lines?
Creators: name: Chu, Xiaoyong
name: Hambye, Thomas
name: Scarna, Tiziana
name: Tytgat, Michel H. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In dark matter (DM) models, the production of a gamma line (or of a "box-shaped" gamma-ray spectrum) from DM annihilation proceeds in general from a loop diagram involving a heavy charged particle. If the charged particle in the loop carries also a color charge, this leads inevitably to DM annihilation to gluons, with a naturally larger rate. We consider a scenario in which DM candidates annihilate dominantly into gluon pairs, and determine (as far as possible, model-independent) constraints from a variety of observables: a) the dark matter relic density, b) the production of anti-protons, c) DM direct detection and d) gluon-gluon fusion processes at LHC. Among other things, we show that this scenario together with the recent claim for a possible gamma line from the Galactic center in the Fermi-LAT data, leads to a relic abundance of DM that may be naturally close to the cosmological observations.
description: 6 figures, 10 pages
Regulation of bacillus subtilis glucitol operon: characterization of a transcription activator, GutR
Creators: name: Poon, Karen Kuen Huan
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: QR82 .B3 P66 2000
subject: Bacillus subtilis
subject: Genetic regulation
subject: Operons
subject: Genetic transcription

description: Bibliography: p. 249-266.
Stationary phase approximation approach to the quasiparticle interference on the surface of a strong topological insulator
Creators: name: Liu, Qin
name: Qi, Xiao-Liang
name: Zhang, Shou-Cheng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological insulators have surface states with unique spin-orbit coupling. With impurities on the surface, the quasiparticle interference pattern is an effective way to reveal the topological nature of the surface states, which can be probed by the scanning tunneling microscopy. In this paper, we present a general analytic formulation of the local density of states using the stationary phase approximation. The power laws of Friedel oscillations are discussed for a constant energy contour with a generic shape. In particular, we predict unique signature of magnetic impurities in comparison with nonmagnetic impurities for a surface state trapped in a "magnetic wall".
description: 9 pages, 5 figures, 4 tables
Potential vorticity dynamics in the framework of disk shallow-water theory: II. Mixed Barotropic-Baroclinic Instability
Creators: name: Umurhan, O. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We extend exploration of potential vorticity instabilities in cold astrophysical disks whose mean states are baroclinic. In particular, we seek to demonstrate the potential existence of traditional baroclinic instabilities of meteorological studies in a simplified two-layer Philips Disk Model. Each disk layer is of constant but differing densities. The resulting mean azimuthal velocity profile shows a variation in the vertical direction implying that the system is baroclinic in the mean state. The stability of the system is treated in the context of disk shallow water theory wherein azimuthal disturbances are much longer than the corresponding radial or vertical scales. The normal-mode problem is solved numerically using two different methods. The results of a symmetric single layer barotropic model is considered and it is found that instability persists for models in which the potential vorticity profiles are not symmetric, consistent with previous results. The instaiblity is interpreted in terms of interacting Rossby waves. For a two layer system in which the flow is fundamentally baroclinic we report here that instability takes on the form of mixed barotropic-baroclinic type: instability occurs but it qualitatively follows the pattern of instability found in the barotropic models. Instability arises because of the phase locking and interaction of the Rossby waves between the two layers. The strength of the instability weakens as the density contrast between layers increases. (For full abstract see article.)
description: Under consideration for publication in Astronomy and Astrophysics. Comments to the author welcome
Sans famille et en famille: le discours sexiste d'hector malot
Creators: name: McCarron, Carmen
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: PQ2346 .Z5 M39 2000
subject: Malot, Hector Henri, 1830-1907. Sans famille.
subject: Malot, Hector Henri, 1830-1907. En famille.
subject: Malot, Hector Henri, 1830-1907 - Criticism and interpretation
subject: Sex role in literature

description: Bibliography: p. 123-127.
The Out-of-Equilibrium Time-Dependent Gutzwiller Approximation
Creators: name: Fabrizio, Michele
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We review the recently proposed extension of the Gutzwiller approximation, M. Schiro' and M. Fabrizio, Phys. Rev. Lett. 105, 076401 (2010), designed to describe the out-of-equilibrium time-evolution of a Gutzwiller-type variational wave function for correlated electrons. The method, which is strictly variational in the limit of infinite lattice-coordination, is quite general and flexible, and it is applicable to generic non-equilibrium conditions, even far beyond the linear response regime. As an application, we discuss the quench dynamics of a single-band Hubbard model at half-filling, where the method predicts a dynamical phase transition above a critical quench that resembles the sharp crossover observed by time-dependent dynamical mean field theory. We next show that one can actually define in some cases a multi-configurational wave function combination of a whole set of mutually orthogonal Gutzwiller wave functions. The Hamiltonian projected in that subspace can be exactly evaluated and is equivalent to a model of auxiliary spins coupled to non-interacting electrons, closely related to the slave-spin theories for correlated electron models. The Gutzwiller approximation turns out to be nothing but the mean-field approximation applied to that spin-fermion model, which displays, for any number of bands and integer fillings, a spontaneous $Z_2$ symmetry breaking that can be identified as the Mott insulator-to-metal transition.
description: 25 pages. Proceedings of the Hvar 2011 Workshop on 'New materials for thermoelectric applications: theory and experiment'
Classicization in the renaissance: the madrigal history of Jacques Arcadelt (ca. 1505-1568)
Creators: name: Harris, Kenneth Paul
Publisher: name: University of Calgary
Year: 1999
Subjects: subject: ML410 .A72 H37 1999
subject: Arcadelt, Jacob, ca 1505-1568. Madrigals, voices (4), book 1
subject: Madrigals, Italian--history and criticism
subject: Madrigals, Italian--historiography

description: Bibliography: p. 144-154
Tight binding description of the electronic response of a molecular device to an applied voltage
Creators: name: Krzeminski, Christophe
name: Delerue, Christophe
name: Allan, Guy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We analyze the effect of an external electric field on the electronic structure of molecules which have been recently studied as molecular wires or diodes. We use a self-consistent tight binding technique which provides results in good agreement with ab initio calculations and which may be applied to a large number of molecules. The voltage dependence of the molecular levels is mainly linear with slopes intimately related to the electronic structure of the molecules. We emphasize that the response to the applied voltage is an important feature which governs the behavior of a molecular device.
The establishment of a model for cigarette smoke exposure in pregnant rats
Creators: name: Farkas, Svetlana
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: RG627.6 .T6 F37 2000
subject: Cigarette smoke
subject: Tobacco-physiological effects
subject: Fetus-effect of drugs on
subject: Infants (Newborn)--Effect of drugs on.
subject: Sudden infant death syndrome.
subject: Rats as laboratory animals
subject: Rats - Physiology

description: Bibliography: p. 87-99
Bitch on the bench: Canada's national newspapers and feminist ideology in the "no-means-no" case
Creators: name: Sampert, Shannon Mae
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: PN 4914 W58 S26 2000
subject: Women - Press coverage - Canada
subject: Feminism - Press coverage - Canada
subject: Rape - Press coverage - Canada
subject: Mass media and criminal justice - Canada
subject: Women judges - Press coverage - Canada
subject: Discourse analysis

description: Bibliography: p. 151-158
Early Performance Prediction of Web Services
Creators: name: Reddy, Ch Ram Mohan
name: Geetha, D. Evangelin
name: Srinivasa, K. G.
name: Kumar, T. V. Suresh
name: Kanth, K. Rajani
Publisher: name: arXiv
Year: 2012
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Web Service is an interface which implements business logic. Performance is an important quality aspect of Web services because of their distributed nature. Predicting the performance of web services during early stages of software development is significant. In this paper we model web service using Unified Modeling Language, Use Case Diagram, Sequence Diagram, Deployment Diagram. We obtain the Performance metrics by simulating the web services model using a simulation tool Simulation of Multi-Tier Queuing Architecture. We have identified the bottle neck resources.
description: 11 pages, 10 figures
Dirac Lie Groups
Creators: name: Li-Bland, David
name: Meinrenken, Eckhard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D17 (Primary), 17B62, 53D20 (Secondary)

description: A classical theorem of Drinfel'd states that the category of simply connected Poisson Lie groups H is isomorphic to the category of Manin triples (d, g, h), where h is the Lie algebra of H. In this paper, we consider Dirac Lie groups, that is, Lie groups H endowed with a multiplicative Courant algebroid A and a Dirac structure E /subset A for which the multiplication is a Dirac morphism. It turns out that the simply connected Dirac Lie groups are classified by so-called Dirac Manin triples. We give an explicit construction of the Dirac Lie group structure defined by a Dirac Manin triple, and develop its basic properties.
description: 46 pages
The hard edge of a soft science: The impact of the Newtonian-quantum paradigm shift in the sciences on political science theories and methods
Creators: name: Pickup, Mark
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: JA 80 P53 2000
subject: Political science.
subject: Political science - Methodology
subject: Science - Philosophy
subject: Science - History
subject: Feminism

description: Bibliography: p. 111-116
Measurement-based quantum repeaters
Creators: name: Zwerger, M.
name: Dür, W.
name: Briegel, H. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce measurement-based quantum repeaters, where small-scale measurement-based quantum processors are used to perform entanglement purification and entanglement swapping in a long-range quantum communication protocol. In the scheme, pre-prepared entangled states stored at intermediate repeater stations are coupled with incoming photons by simple Bell-measurements, without the need of performing additional quantum gates or measurements. We show how to construct the required resource states, and how to minimize their size. We analyze the performance of the scheme under noise and imperfections, with focus on small-scale implementations involving entangled states of few qubits. We find measurement-based purification protocols with significantly improved noise thresholds. Furthermore we show that already resource states of small size suffice to significantly increase the maximal communication distance. We also discuss possible advantages of our scheme for different set-ups.
Structure-function analysis of the SERCA2b C-terminal tail
Creators: name: Yang, RuoMei
Publisher: name: University of Calgary
Year: 1999
Subjects: subject: QP552 .C24 Y36 1999
subject: Calcium binding proteins
subject: Calcium - binding protein genes
subject: Protein binding
subject: Gene expression
subject: Proteins - Analysis

description: Bibliography: p. 62-85
description: UARC
Excavations at Dod Law West hillfort, Northumberland
Creators: name: Smith, Christopher A
Publisher: name: Archaeology Data Service
Year: 2022

description: Northern Archaeology, 09, 1-55
description: During the recent excavations at the Dod Law West hillfort attention concentrated on the defences. Three distinct phases were identified, the first two of which consist of stages in the development of the outer rampart. Phase I consisted of an earthwork bank with a timber revetment facing the interior of the hillfort. During Phase II this timber revetment was replaced by a stone retaining wall and a palisade was erected on the top of the bank. The retaining wall had to be repaired on a number of occasions, but reached its final form by c. 200 BC while the Phase I timber revetment may have been erected as early as 500 BC. Phase III is marked by the construction of the inner, entirely stone-built, rampart during the 2nd century BC. Whether this was to replace the dilapidated outer rampart or as an additional line of defence is unclear. The inner rampart remained standing until about AD 100. The site includes a number of hut circles, both within the defences and in an extra-mural settlement. Some of these are stone-built whereas others appear to be of timber. The evidence at Dod Law West does not suggest that any of these structures need post-date the hillfort. Most information about the life of the occupants of the site is provided by a study of carbonised plant remains. These suggest that the inhabitants produced their own crops and did not simply import processed grain from elsewhere. Full use was also made of other plant products of the moorland and valley bottom. Dod Law is famous for its prehistoric rock art and the excavations included a limited investigation of the area around one of the main rock outcrops with motifs. A number of portable decorated stones were also discovered.
Horizon synthesis for archaeo-astronomical purposes
Creators: name: Patat, Ferdinando
Publisher: name: arXiv
Year: 2011
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this paper I describe a simple numerical procedure to compute synthetic horizon altitude profiles for any given site. The method makes use of a simplified model of local Earth's curvature, and it is based on the availability of digital elevation models describing the topography of the area surrounding the site under study. Examples constructed using the Shuttle Radar Topographic Mission (SRTM) data (with 90m horizontal resolution) are illustrated, and compared to direct theodolite measurements. The proposed method appears to be reliable and applicable in all cases when the distance to the local horizon is larger than ~10 km, yielding a rms accuracy of ~0.1 degrees (both in azimuth and elevation). Higher accuracies can be achieved with higher resolution digital elevation models, like those produced by many modern national geodetic surveys.
description: 7 pages, 6 figures. Accepted for publication in Astron. Nachr. (Astronomical News)
title: Medizinisches und industrielles Qualitätsmanagement im Vergleich
title: Grundlegende Betrachtungen am Beispiel der IQM-Methodik und des Six-Sigma-Konzeptes
titleType: Subtitle
Creators: name: Völzke, Tatjana
Publisher: name: Technische Universität Berlin
Year: 2014
Subjects: subject: 610 Medizin und Gesundheit
subject: IQM
subject: Qualitätsindikatoren
subject: Qualitätsmanagement
subject: Qualitätsmessung
subject: Six Sigma

description: Die vorliegende Veröffentlichung wurde gegenüber der eingereichten Masterarbeit geringfügig erweitert und modifiziert.
description: Seit 2008 stellt die Initiative Qualitätsmedizin (IQM) allen Krankenhausträgern ein Verfahren zur konsequenten medizinischen Qualitätsverbesserung zur Verfügung, bei dem die Messung und Verbesserung der Ergebnisqualität im Mittelpunkt steht. Durch ihre Teilnahme gehen die Mitgliedskrankenhäuser weit über die gesetzlichen Anforderungen der Qualitätssicherung und -verbesserung hinaus. Aufgrund der fortschreitenden gesetzlichen Detaillierung der Anforderungen an medizinische Qualitätsmanagementsysteme ist die Einordnung der IQM-Methodik in die Qualitätsmanagementsystematik relevant und entscheidend für die weitere Anwendung in den Krankenhäusern. Das in der Industrie etablierte Six-Sigma-Verfahren, unter Bezugnahme auf die DIN EN ISO 9000:2005, eignet sich für einen methodischen Vergleich und die Einordnung der IQM-Methodik, da es sich ebenfalls an messbaren Ergebnissen orientiert. Sowohl in der systematischen Vorgehensweise, als auch in den organisatorischen Voraussetzungen stimmen beide Methoden in weiten Bereichen überein. Die vorliegende Arbeit stellt auf Basis dieses Vergleichs dar, wie die IQM-Methodik im Krankenhaus angewandt und umgesetzt werden muss, um bezüglich der Vorgaben der DIN EN ISO 9000:2005 ein qualifiziertes und vollwertiges internes Qualitätsmanagementsystem eines Krankenhauses darzustellen.
The stratigraphy, sedimentology, and structure of the lower paleozoic deadwood formation of western Canada
Creators: name: Greggs, Darcie H.
Publisher: name: University of Calgary
Year: 2000
Subjects: subject: QE654 .G74 2000A
subject: Geology, Stratigraphic - Paleozoic
subject: Geology, Structural - Canada, Western
subject: Sedimentation and deposition - Canada, Western
subject: Formations (Geology) - Canada, Western

description: Bibliography: p. 164-183
Magneto-optical imaging and transport properties of FeSe superconducting tapes prepared by diffusion method
Creators: name: Ding, Q. P.
name: Mohan, S.
name: Tsuchiya, Y.
name: Taen, T.
name: Nakajima, Y.
name: Tamegai, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: High-quality FeSe tapes have been prepared by using a diffusion method. By adjusting the reaction temperature and the thickness systematically, a transport critical current density as high as 600 A/cm2 at 4.2 K under self field is achieved. Magneto-optical images indicate considerable distribution of Tc and weak-link features in the FeSe tape. This study gives some insight into how to improve the quality and performance of FeSe tapes and other superconducting tapes prepared through diffusion method further.
description: 3 pages, 5 figures
Giant Transverse Optical Forces in Nanoscale Slot Waveguides of Hyperbolic Metamaterials
Creators: name: He, Yingran
name: He, Sailing
name: Gao, Jie
name: Yang, Xiaodong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Here we demonstrate that giant transverse optical forces can be generated in nanoscale slot waveguides of hyperbolic metamaterials, with more than two orders of magnitude stronger compared to the force created in conventional silicon slot waveguides, due to the nanoscale optical field enhancement and the extreme optical energy compression within the air slot region. Both numerical simulation and analytical treatment are carried out to study the dependence of the optical forces on the waveguide geometries and the metamaterial permittivity tensors, including the attractive optical forces for the symmetric modes and the repulsive optical forces for the anti-symmetric modes. The significantly enhanced transverse optical forces result from the strong optical mode coupling strength between two metamaterial waveguides, which can be explained with an explicit relation derived from the coupled mode theory. Moreover, the calculation on realistic metal-dielectric multilayer structures indicates that the predicted giant optical forces are achievable in experiments, which will open the door for various optomechanical applications in nanoscale, such as optical nanoelectromechanical systems, optical sensors and actuators.
description: 18 pages, 6 figures
The landscape of education: The notion and form of education within and for a community centered on sustainability
Creators: name: Walker, Helen L.
Publisher: name: University of Calgary
Year: 1999
Subjects: subject: LB 14.7 W35 1999
subject: Additional Copy: 370 EDC 1999 WAL
subject: Education - Philosophy
subject: Environmental education - Philosophy
subject: Educational sociology
subject: Sustainable development - Study and teaching
subject: Cooperative societies
subject: Cooperative societies - Spain - Mondragon
subject: Spain - Mondragon - Cooperative societies

description: Bibliography: p. 102-109
description: UARC
Molecular clouds under the influence of massive stars in the Galactic HII region G353.2+0.9
Creators: name: Giannetti, A.
name: Brand, J.
name: Massi, F.
name: Tieftrunk, A.
name: Beltran, M. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Galactic HII region G353.2+0.9 is excited by the massive open cluster Pismis-24. By analyzing (sub-)mm molecular-line and -continuum we study the detailed morphology of the gas and dust, as well as their physical parameters and their variation across the PDR. We observed various molecules and transitions to derive the physical properties of the molecular gas through line ratios, and both LTE and non-LTE analyses. The physical properties of the gas were derived with a Bayesian approach for the non-LTE analysis. Based on the continuum data at 870 micron, we derived the dust mass and the column density of H2, and thus the molecular abundances. The total mass of the gas in the region is ca. 2000 Mo, while that of the dust is ca. 21 Mo. A velocity gradient in the region suggests that the expansion of the ionized gas is pushing the molecular gas away from the observer. We unambiguously identify the ionization front, at the location of which we detect an increase in gas density and temperature. We find at least 14 clumps at different positions and LSR velocities. We derive kinetic temperatures in the ranges 11-45 K (CS) and 20-45 K (CN). The H2 number density is typically around 1e5 cm^-3 from CS and few 1e5 cm^-3 from CN, with maxima above 1e6 cm^-3. The abundances of the molecules observed vary across the region, and appear to be higher in regions further away from the ionization front.
description: 14 pages, 11 figures. Accepted for publication in Astronomy and Astrophysics
Content Recommendation Systems: When Do You Need a Graph?
Creators: name: Maykow, Holly
name: Islas, Fernando Aguilar
Publisher: name: Zenodo
Year: 2023

description: Content Recommendation Systems: When Do You Need a Graph? Recommendation systems are at the heart of many products we use today, helping us discover new music, expand our wardrobes, and navigate the massive amounts of information on the Internet to answer our search queries. In a world where efficiency and accuracy is paramount, and processing power and availability of user data varies across industries, graph-powered engines and their ability to deliver continued performance at scale provide many advantages.

 How are these recommendations determined? What conditions must exist in order to build a graph-based system that produces accurate, relevant results? What technologies are at play under the hood? Through the business use case of a leading national learning management system (LMS) in the healthcare industry, this presentation will answer these questions by providing an overview of the problem statement and the solution architecture, including technical dives into NLP taxonomy enrichment, knowledge graph development, and recommender logic.
Are private schools better than public schools? Appraisal for Ireland by methods for observational studies
Creators: name: Pfeffermann, Danny
name: Landsman, Victoria
Publisher: name: arXiv
Year: 2011
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: In observational studies the assignment of units to treatments is not under control. Consequently, the estimation and comparison of treatment effects based on the empirical distribution of the responses can be biased since the units exposed to the various treatments could differ in important unknown pretreatment characteristics, which are related to the response. An important example studied in this article is the question of whether private schools offer better quality of education than public schools. In order to address this question, we use data collected in the year 2000 by OECD for the Programme for International Student Assessment (PISA). Focusing for illustration on scores in mathematics of 15-year-old pupils in Ireland, we find that the raw average score of pupils in private schools is higher than of pupils in public schools. However, application of a newly proposed method for observational studies suggests that the less able pupils tend to enroll in public schools, such that their lower scores are not necessarily an indication of bad quality of the public schools. Indeed, when comparing the average score in the two types of schools after adjusting for the enrollment effects, we find quite surprisingly that public schools perform better on average. This outcome is supported by the methods of instrumental variables and latent variables, commonly used by econometricians for analyzing and evaluating social programs.
description: Published in at http://dx.doi.org/10.1214/11-AOAS456 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Photon-Graviton Amplitudes from the Effective Action
Creators: name: Bastianelli, F.
name: Corradini, O.
name: Davila, J. M.
name: Schubert, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We report on the status of an ongoing effort to calculate the complete one-loop low-energy effective actions in Einstein-Maxwell theory with a massive scalar or spinor loop, and to use them for obtaining the explicit form of the corresponding M-graviton/N-photon amplitudes. We present explicit results for the effective actions at the one-graviton four-photon level, and for the amplitudes at the one-graviton two-photon level. As expected on general grounds, these amplitudes relate in a simple way to the corresponding four-photon amplitudes. We also derive the gravitational Ward identity for the 1PI one-graviton -- N photon amplitude.
description: 9 pages, 2 figures, talk given by C. Schubert at "Supersymmetries and Quantum Symmetries - SQS`2011", JINR Dubna, July 18 - 23, 2011 (to appear in the Proceedings)