cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A study of Russian organizations in the greater Vancouver area.
Creators: name: Tarasoff, Koozma J.
Publisher: name: University of British Columbia
Year: 2011

description: This is a study of Russian ethnic organizations in the Greater Vancouver area of British Columbia. These ethnics in total include an official population of 9,324. More specifically, this is a study of "joiners" in fourteen "existent" and seven "non-existent" organizations. Bata were gathered over an eighteen month period mainly by participant observation and interviews. The findings may be summarized as follows: 1. There are relatively few "joiners" as compared to "non-joiners" in the ethnic sub-community. 2. Those that join do so for a variety of reasons, including religious, ideological, cultural and/or personal reasons. 3. Turning from the individual to the voluntary association or organization, we find certain characteristics of growth which we have described in eight sections: origin, formal structure and membership, internal differentiation, cooperation with other groups, conflict with other groups, internal strains, actual splits and termination (if any), 4. The dominant theme which evolves from the study is that one's perception of Communism (together with the "cold war" atmosphere) greatly affects organizational behavior. Thus we find a whole series of symbolic magic-like words used to pave the way on one hand or to hinder the spread of Communism on the other—or else to maintain a "neutral" position. 5. Other factors which affect organizational behavior in the Russian community have been included under seven sub-categories: social class, kinship, jurisdictional conflict, effective leadership, ecological factors, common interest, and place of birth and time of arrival in Canada. 6. Certain queries arise concerning the actual acceptance of "unpopular" ideas in a society which theoretically glorifies "diversity". This, in turn, affects the rate of integration of such minority opinions into society. In brief, then, the study of Russian ethnic organizations shows that there are certain things which bring people together and other things which split them apart; this whole process, in turn, is largely related to the national policy and its role in the "cold war" atmosphere.
Mini-Workshop: New Developments in Newton-Okounov Bodies
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: The theory of Newton-Okounkov bodies, also called Okounkov bodies, is a new connection between algebraic geometry and convex geometry. It generalizes the well-known and extremely rich correspondence between geometry of toric varieties and combinatorics of convex integral polytopes. Okounkov bodies were first introduced by Andrei Okounkov, in a construction motivated by a question of Khovanskii concerning convex bodies govering the multiplicities of representations. Recently, Kaveh-Khovanskii and Lazarsfeld-Mustata have generalized and systematically developed Okounkov’s construction, showing the existence of convex bodies which capture much of the asymptotic information about the geometry of ($X,D$) where $X$ is an algebraic variety and $D$ is a big divisor. The study of Okounkov bodies is a new research area with many open questions. The goal of this mini-workshop was to bring together a core group of algebraic/symplectic geometers currently working on this topic to establish the groundwork for future development of this area.
SCALAR MESONS AND KAONS IN ϕ-RADIATIVE DECAY & THEIR IMPLICATIONS FOR STUDIES OF CP VIOLATION AT DAFNE
Creators: name: N. BROWN
name: F. E. CLOSE
Publisher: name: INFN Open Access Repository
Year: 1992

description: Tragically, Nick Brown died in an accident on 13 June 1991 just as his great potential as a physicist was beginning to flower. He was enthusiastically committed to science and this was his last and uncompleted research. He had written up rather complete notes which I include here as section 1 in his own words with only minor editing by me* and hope that he would have approved of it and the subsequent commentary. We had become interested in the possibility that radiative decays of the ϕ meson might be so prominent they would undermine the primary aim of the ϕ factory, namely the study of CP violation. As a result of Nick's work we can now be confident that the CP programme will not be significantly affected by this possibility. At the same time, the DAPHNE facility will create opportunities for studying ϕ radiative processes, in particular the production of the enigmatic scalar resonances, in their own right. Our joint understanding of this was primitive at the time of Nick's death and we did not perceive the subtleties and insight that this, still incompleted, work would bring. My personal sadness is that Nick was not able to witness the discoveries that came from all this; he certainly would have enjoyed them and I would like to dedicate this paper to his memory.
The Two Roads to "Intrinsic Charm" in B Decays
Creators: name: Bigi, Ikaros
name: Mannel, Thomas
name: Turczyk, Sascha
name: Uraltsev, Nikolai
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe two complementary ways to show the presence of higher order effects in the 1/m_Q expansion for inclusive B decays that have been dubbed "Intrinsic Charm". Apart from the lessons they can teach us about QCD's nonperturbative dynamics their consideration is relevant for precise extractions of |V_{cb}|: for they complement the estimate of the potential impact of 1/m_Q^4 contributions. We draw semiquantitative conclusions for the expected scale of Weak Annihilation in semileptonic B decays, both for its valence and non-valence components.
description: 17 pages, 3 figures
Mini-Workshop: Mathematics of Machine Learning
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: This is a report for a mini-workshop on the mathematical theory of learning. The purpose of the workshop was to bring together internationally recognized experts and young researchers to discuss new approaches, trends, and problems of the area.
Higgs portal dark matter in the minimal gauged $U(1)_{B-L}$ model
Creators: name: Okada, Nobuchika
name: Seto, Osamu
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a scenario of the right-handed neutrino dark matter in the context of the minimal gauged $U(1)_{B-L}$ model by introducing an additional parity which ensures the stability of dark matter particle. The annihilation of this right-handed neutrino takes place dominantly through the s-channel Higgs boson exchange, so that this model can be called Higgs portal dark matter model. We show that the thermal relic abundance of the right-handed neutrino dark matter with help of Higgs resonance can match the observed dark matter abundance. In addition we estimate the cross section with nucleon and show that the next generation direct dark matter search experiments can explore this model.
description: 13 pages, 3 figures
The Analytic Theory of Automorphic Forms
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: The workshop brought together leading experts in the theory of automorphic forms. Recently developed analytic, geometric and ergodic methods have enabled several important results in the theory for $GL(2)$, and also made it possible to investigate groups of higher rank. This includes in particular recent work on periods of automorphic forms, subconvexity bounds for automorphic L-functions, and equidistribution results on homogenous spaces.
Discrete Geometry
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: A number of remarkable recent developments in many branches of discrete geometry have been presented at the workshop, some of them demonstrating strong interactions with other fields of mathematics (such as algebraic geometry, harmonic analysis, and topology). The field is very active with lots of open questions and many solutions. There was a large number of young participants who are eager to work on these problems. The future of discrete geometry looks more than promising.
Noncommutative Geometry
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: Noncommutative Geometry applies ideas from geometry to mathematical structures determined by noncommuting variables. This meeting concentrated primarily on those aspects of Noncommutative Geometry that are related to index theory and on the connections between operator algebras and number theory.
Smoothed Particle Hydrodynamics simulations of expanding HII regions. I. Numerical methods and tests
Creators: name: Bisbas, T. G.
name: Wunsch, R.
name: Whitworth, A. P.
name: Hubber, D. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We describe a new algorithm for including the dynamical effects of ionizing radiation in SPH simulations, and we present several examples of how the algorithm can be applied to problems in star formation. We use the HEALPix software to tessellate the sky and to solve the equation of ionization equilibrium along a ray towards each of the resulting tesserae. We exploit the hierarchical nature of HEALPix to make the algorithm adaptive, so that fine angular resolution is invoked only where it is needed, and the computational cost is kept low. We present simulations of (i) the spherically symmetric expansion of an HII region inside a uniform-density, non--self-gravitating cloud; (ii) the spherically symmetric expansion of an HII region inside a uniform-density, self-gravitating cloud; (iii) the expansion of an off-centre HII region inside a uniform-density, non--self-gravitating cloud, resulting in rocket acceleration and dispersal of the cloud; and (iv) radiatively driven compression and ablation of a core overrun by an HII region. The new algorithm provides the means to explore and evaluate the role of ionizing radiation in regulating the efficiency and statistics of star formation.
description: 12 pages, 16 figures, simulation movies available at http://galaxy.ig.cas.cz/~richard/HIIregion/
An Oosterhoff Analysis of the Galactic Bulge Field RR Lyrae stars: Implications On Their Absolute Magnitudes
Creators: name: Kunder, Andrea
name: Chaboyer, Brian
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of the period-$V$-amplitude plane for RR0 Lyrae stars (fundamental mode pulsators) with "normal" light curves in the bulge using the MACHO bulge fields. Although bulge globular clusters have RR Lyraes that divide into two reasonable distinct groups according to the average period of the RR0 Lyraes (Oosterhoff 1939), there is no evidence of a gap between Oosterhoff I and II stars in the bulge field star sample. The majority of the bulge RR0 Lyrae field star population have a difference in period compared to the Oosterhoff I cluster M3 (Delta log P) that is shifted by about 0.02 days with regard to the Milky Way Oosterhoff I population, and the sample includes stars with Delta log P > 0.06 days, a characteristic hardly seen in Milky Way globular clusters. The metal-rich RR0 Lyrae stars in the Galactic bulge sample have Delta log P values on the other side of the spectrum as those in the metal-rich globular clusters NGC 6388 and NGC 6441. We find that the $V$-amplitude for a given period is a function of Delta log P, and not of metal abundance, similar to the result found by Clement & Shelton (1999) for RR Lyrae stars in Milky Way globular clusters. A comparative study of the bulge field stars with similar metallicities but different Oosterhoff types is carried out. Bulge field RR0 Lyrae variables with Delta log P values similar to Oosterhoff II clusters are about 0.2 mag brighter than RR0 Lyrae variables with Delta log P similar to Oosterhoff I clusters. Reliance upon a single absolute magnitude-[Fe/H] relation may be inappropriate when considering populations with different Delta log P.
description: accepted to AJ, 9 figures
Complex Algebraic Geometry
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: The conference focused on several classical and modern topics in the realm of complex algebraic geometry, such as moduli spaces, birational geometry and the minimal model program, Mirror symmetry and Gromov–Witten invariants, Hodge theory, curvature flows, algebraic surfaces and curves.
Understanding the emergence and deployment of "nano" S&T
Creators: name: Bozeman, Barry
name: Larédo, Philippe
name: Mangematin, Vincent
Publisher: name: arXiv
Year: 2009
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: As an introduction to the special issue on "emerging nanotechnologies", this paper puts in perspective contemporary debates and challenges about nanotechnology. It presents an overview of diverse analyses and expectations about this presumably revolutionary set of technological, scientific and industrial developments. Three main lines of argument can then be delineated: first of all, the degree of cumulativeness of science and technologies and the respective roles of newcomers and incumbents in the industrial dynamics; second the knowledge dynamics in nanotechnologies, especially the linkages by science and technology and third the role of institutions (network, geographic agglomeration and job market). It finally discusses methodologies to delineate the field of nanotechnologies and to collect data.
Secured Cryptographic Key Generation From Multimodal Biometrics Feature Level Fusion Of Fingerprint And Iris
Creators: name: Jagadeesan, A.
name: Duraiswamy, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Human users have a tough time remembering long cryptographic keys. Hence, researchers, for so long, have been examining ways to utilize biometric features of the user instead of a memorable password or passphrase, in an effort to generate strong and repeatable cryptographic keys. Our objective is to incorporate the volatility of the users biometric features into the generated key, so as to make the key unguessable to an attacker lacking significant knowledge of the users biometrics. We go one step further trying to incorporate multiple biometric modalities into cryptographic key generation so as to provide better security. In this article, we propose an efficient approach based on multimodal biometrics (Iris and fingerprint) for generation of secure cryptographic key. The proposed approach is composed of three modules namely, 1) Feature extraction, 2) Multimodal biometric template generation and 3) Cryptographic key generation. Initially, the features, minutiae points and texture properties are extracted from the fingerprint and iris images respectively. Subsequently, the extracted features are fused together at the feature level to construct the multibiometric template. Finally, a 256bit secure cryptographic key is generated from the multibiometric template. For experimentation, we have employed the fingerprint images obtained from publicly available sources and the iris images from CASIA Iris Database. The experimental results demonstrate the effectiveness of the proposed approach.
description: Pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS January 2010, ISSN 1947 5500, http://sites.google.com/site/ijcsis/
Economical ontological models for discrete quantum systems
Creators: name: Galvao, Ernesto F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I use the recently proposed framework of ontological models [Harrigan et al., arXiv:0709.1149v2] to obtain economical models for results of tomographically complete sets of measurements on finite-dimensional quantum systems. I describe a procedure that simplifies the models by decreasing the number of necessary ontic states, and present an explicit model with just 33 ontic states for a qutrit.
description: 6 pages, 2 figures. v2: erroneous claim removed, compression method improved, reference added
A kinematic study of the irregular dwarf galaxy NGC 2366 using HI and Halpha observations
Creators: name: van Eymeren, J.
name: Marcelin, M.
name: Koribalski, B.
name: Dettmar, R. -J.
name: Bomans, D. J.
name: Gach, J. -L.
name: Balard, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Abridged. Context. The metal content of dwarf galaxies and the metal enrichment of the intergalactic medium both suggest that mass loss from galaxies is a significant factor for the chemical evolution history of galaxies, in particular of dwarf galaxies. However, no clear evidence of a blow-away in local dwarf galaxies has been found so far. Aims. We therefore performed a detailed kinematic analysis of the neutral and ionised gas in the nearby star-forming irregular dwarf galaxy NGC 2366 in order to make predictions about the fate of the gas and to get a more complete picture of this galaxy. Methods. A deep Halpha image and Fabry-Perot interferometric data of NGC 2366 were obtained. They were complemented by HI synthesis data from the THINGS survey. We searched for line-splitting both in Halpha and HI by performing a Gaussian decomposition. To get an idea whether the expansion velocities are high enough for a gas blow-away, we used the pseudo-isothermal halo model, which gives us realistic values for the escape velocities of NGC 2366. The good data quality also allowed us to discuss some peculiarities of the morphology and the dynamics in NGC 2366. Results. A large red-shifted outflow north west of the giant extragalactic HII region with an expansion velocity of up to 50 km/s is found in Halpha, but not in HI. Additionally, a blue-shifted component north of the giant extragalactic HII region was detected both in Halpha and HI with an expansion velocity of up to 30 km/s. A comparison with the escape velocities of NGC 2366 reveals that the gas does not have enough kinetic energy to leave the gravitational potential.
description: 15 pages, 14 figures, accepted for publication by A&A
All quiet in the outer halo: chemical abundances in the globular cluster Pal 3
Creators: name: Koch, Andreas
name: Côté, Patrick
name: McWilliam, Andrew
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context: Globular clusters (GCs) in the outer halo are important probes of the composition and origin of the Galactic stellar halo. Aims: We derive chemical element abundance ratios in red giants belonging to the remote (R~90 kpc) GC Pal 3 and compare our measurements to those for red giant stars in both inner and outer halo GCs. Methods: From high-resolution spectroscopy of four red giants, obtained with the Magellan/MIKE spectrograph at moderately high S/N, we derive chemical abundances for 25 alpha-, iron peak-, and neutron-capture elements. These abundance ratios are confirmed by co-adding low S/N HIRES spectra of 19 stars along the red giant branch. Results: Pal 3 shows alpha-enhanced abundance patterns, and also its Fe-peak and neutron-capture element ratios, are fully compatible with those found in halo field stars and representative inner halo GCs of the same metallicity (such as M 13). The heavy elements in Pal 3 appear to be governed by r-process nucleosyn-thesis. Our limited sample does not show any significant star-to-star abundance variations in this cluster, although a weak Na-O anti-correlation cannot be ruled out by the present data. Conclusions: Pal 3 thus appears as an archetypical GC with abundance ratios dissimilar to dwarf spheroidal stars, ruling out a direct connection to such external systems. This conclusion is underscored by the lack of significant abundance spreads in this GC, in contrast to the broad abundance distributions seen in the dwarf galaxies. Pal 3 appears to have evolved chemically coeval with the majority of GCs belonging to Galactic inner and outer halo, experiencing a similar enrichment history.
description: 16 pages, 13 figures, accepted for publication in Astronomy and Astrophysics
Very High Dimensional Semiparametric Models
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: Very high dimensional semiparametric models play a major role in many areas, in particular in signal detection problems when sparse signals or sparse events are hidden among high dimensional noise. Concrete examples are genomic studies in biostatistics or imaging problems. In a broad context all kind of statistical inference and model selection problems were discussed for high dimensional data.
Arbeitsgemeinschaft: Quantum Ergodicity
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: Quantum Ergodicity aims at understanding the eigenstates of quantum mechanical systems admitting chaotic classical limiting dynamics. A paradigmatic system is the Laplace-Beltrami operator on a compact manifold of negative sectional curvature: its classical limit is the geodesic flow on the manifold, which is of Anosov type. Although no explicit expression is available for the eigenstates, one may use various tools from semiclassical analysis in order to gather some partial information on their structure. The central result (Quantum Ergodicity Theorem) states that almost all eigenstates are equidistributed over the energy shell, in the semiclassical limit, provided the classical system is ergodic. The lectures review the background techniques of semiclassical analysis and ergodic theory, give several versions of the QE theorem, and present several extensions of the result, which apply to specific systems, for instance chaotic systems enjoying arithmetic symmetries.
The masque in Shakespeare
Creators: name: Shaw, Catherine Maud
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to examine the dramatic function of the Court Masque in the plays of William Shakespeare and to determine how the integration of the masque, either in whole or in part, enhanced his plays both structurally and thematically. The first chapter traces the development of the Court Masque from its introduction into the court as a recognizable form in 1512 to the highly elaborate productions of the Jacobean and Caroline periods. The emphasis is on the interrelationship between the masque and poetic drama and the use within the drama of certain qualities which had become associated with the masque. In the succeeding chapters, Shakespeare’s plays are grouped according to what appears to be the most obvious function of the masque. This grouping is in no way categorical as the function which the masque fulfills is often two or three-fold. In Henry VIII, Romeo and Juliet, and The Merchant of Venice, the masque provides a cover for romantic intrigue and thus advances the plot. In addition to this an irony is established through the juxtaposition of the event and the conditions under which it takes place. Love’s Labour’s Lost, Timon of Athens and Much Ado About Nothing illustrate masque associations with frivolity and affectation which reflect the unreal poses of the main characters. In these plays the denouement hinges upon the discovery of reality. Chapter IV deals with those plays which not only contain masque sequences but also reveal something of an over-all masque quality, plays in which the action moves through fleeting masque-like scenes to final order and harmony. The antimasque, though appearing in some plays previously mentioned, is examined in a separate chapter and its function and effectiveness assessed. The thesis reveals that while increased elaboration of masque production provided Shakespeare with possibilities for more theatrical effects in the public theatre and led to a greater use of stage spectacle in the later plays, never is the masque used merely for stage effect even when this was the fashion followed by many other dramatists. The masque is integrated into the plot and its qualities adapted to reinforce the theme. Of the many influences, both contemporary and traditional, which stimulated Shakespeare’s imagination, the masque was an important one. The masterful assimilation of the Court Masque contributes to the vitality and universality of the dramas and are a tribute to their author's genius and complete eclecticism.
Toward a complete description of nucleation and growth in liquid-liquid phase separation
Creators: name: Colombani, Jean
name: Bert, Jacques
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The phase separation mechanism of a binary liquid mixture off-critically quenched in its miscibility gap is nucleation and growth, its homogeneous phase reaching a metastable equilibrium state. The successive stages of growth of the nucleated droplets are a diffusion-driven free growth, an intermediate regime and a coarsening by reduction of interface (Ostwald ripening or Brownian collisions induced coalescence). We have made light attenuation experiments to investigate the sedimentation in such systems. These results have given us access experimentally to two values predicted theoretically: the growth exponent of the intermediate regime and the crossover time between this regime and interface-reduction coarsening. These data, added to the literature results, have permitted to get a quite complete view of the growth scenario in very off-critical phase-separating liquids.
Analysis and Geometric Singularities
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2010
Subjects: subject: Konferenzschrift
subject: 510

description: The Conference on “Analysis and Geometric Singularities” took place from June 27 to July 3, 2010 and had 53 participants. The organization of the meeting followed the well-established scheme, providing plenty of discussion time which was intensely used, especially by the young participants. The four survey talks were given by Gilles Carron, Jean-Michel Bismut, Ulrich Bunke and Xiaonan Ma.
Mini-Workshop: Nonlinear Least Squares in Shape Identification Problems
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: This mini-workshop brought together mathematicians engaged in shape optimization and in inverse problems in order to address a specific class of problems on the reconstruction of geometries. Such a problem can be formulated as an inverse problem forgetting the shape point of view or as minimization with respect to the shape.
Why Do Personalist Autocrats Implement Central Bank Independence?
Creators: name: Brown, Robert
Publisher: name: University of Chicago
Year: 2023
Subjects: subject: Central Bank Independence
subject: CBI
subject: Autocracy
subject: Autocratic Breakdown
subject: Personalism
subject: Personalist Regimes
subject: FDI

description: Central bank independence (CBI) is well-understood in democratic contexts. The rationale underpinning CBI in these settings is that independence allows countries to overcome the time inconsistency problem associated with monetary policymaking. However, this argument may not apply in non-democratic regimes, since autocratic leaders are often able to overcome legal frameworks that would deign to keep bankers independent. This reality is especially pronounced in personalist dictatorships, where power is highly centralized. In these states, rarely can bureaucratic systems stand up to the might of the authoritarian. As a result, even under policies of CBI, bankers are not truly shielded from political pressures. Nonetheless, personalist regimes pursue CBI—and are increasingly doing so. This is the puzzle. My argument proposes that autocrats do not use CBI for the same reason that democratic countries do. Instead, they implement independence to signal an “openness” to investment and project that they feel secure in their position. I find support for this claim. I also find modest support for a larger claim: adoption of CBI in personalist autocracies is associated with a decreased likelihood of autocratic breakdown.
Test-retest reliability study of the Frostig development test of visual perception.
Creators: name: Walter, Helen Irene
Publisher: name: University of British Columbia
Year: 2011

description: The present study was designed to investigate the reliability of the Frostig Developmental Test of Visual Perception with retarded subjects. The Frostig test is divided into five subtests involving visuo-perceptual tasks and measurements. This study computed reliability coefficients on all the subtests as well as on the total scores. The Peabody Picture Vocabulary Test and the Frostig Developmental test of Visual Perception were also correlated in an attempt to assess an aspect of Frostig validity. The sixty retarded subjects used in this study were divided into groups on the basis of both chronological and mental age, and the test-retest method of reliability assessment was used. The results of this study indicate that the total test scores of the Frostig Developmental Test of Visual Perception are reliable when dealing with the perceptual performance of retarded subjects. The stability of the subtest shows greater variation than does that of the total scores. The subtests of Eye-Motor Coordination and Form Constancy yielded the most variable results and it is evident that with the population studied, these subtests cannot be considered stable enough to be individually, diagnostically, useful. The Peabody Picture Vocabulary correlation with the Frostig Developmental Test of Visual Perception of .537 was significant at the .01 level.
A statistical analysis of product prices in online markets
Creators: name: Mizuno, Takayuki
name: Watanabe, Tsutomu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We empirically investigate fluctuations in product prices in online markets by using a tick-by-tick price data collected from a Japanese price comparison site, and find some similarities and differences between product and asset prices. The average price of a product across e-retailers behaves almost like a random walk, although the probability of price increase/decrease is higher conditional on the multiple events of price increase/decrease. This is quite similar to the property reported by previous studies about asset prices. However, we fail to find a long memory property in the volatility of product price changes. Also, we find that the price change distribution for product prices is close to an exponential distribution, rather than a power law distribution. These two findings are in a sharp contrast with the previous results regarding asset prices. We propose an interpretation that these differences may stem from the absence of speculative activities in product markets; namely, e-retailers seldom repeat buy and sell of a product, unlike traders in asset markets.
description: 5 pages, 5 figures, 1 table, proceedings of APFA7
Correlations and Interactions for Random Quantum Systems
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: Random quantum systems cover a broad range of mathematical models from random Schr¨odinger operators to random matrices and quantum spin models with random parameters. Their understanding requires techniques which combine functional analysis and probability. The workshop brought together researchers from these various branches which discussed new results, methods and future challenges. This is a report on the meeting containing extended abstracts of the lectures.
Circular photogalvanic effect in HgTe/CdHgTe quantum well structures
Creators: name: Wittmann, B.
name: Danilov, S. N.
name: Bel'kov, V. V.
name: Tarasenko, S. A.
name: Novik, E. G.
name: Buhmann, H.
name: Brüne, C.
name: Molenkamp, L. W.
name: Kvon, Z. D.
name: Mikhailov, N. N.
name: Dvoretsky, S. A.
name: Vinh, N. Q.
name: van der Meer, A. F. G.
name: Murdin, B.
name: Ganichev, S. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We describe the observation of the circular and linear photogalvanic effects in HgTe/CdHgTe quantum wells. The interband absorption of mid-infrared radiation as well as the intrasubband absorption of terahertz (THz) radiation in the QWs structures is shown to cause a dc electric current due to these effects. The photocurrent magnitude and direction varies with the radiation polarization state and crystallographic orientation of the substrate in a simple way that can be understood from a phenomenological theory. The observed dependences of the photocurrent on the radiation wavelength and temperature are discussed.
Emigration of Mathematicians and Transmission of Mathematics: Historical Lessons and Consequences of the Third Reich
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: This conference provided a focused venue to explore the intellectual migration of mathematicians and mathematics spurred by the Nazis and still influential today. The week of talks and discussions (both formal and informal) created a rich opportunity for the cross-fertilization of ideas among almost 50 mathematicians, historians of mathematics, general historians, and curators.
Exposing the Noncollectivity in Elliptic Flow
Creators: name: Liao, Jinfeng
name: Koch, Volker
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We show that backward-forward elliptic anisotropy correlation provides an experimentally accessible observable which distinguishes between collective and non-collective contributions to the observed elliptic anisotropy $v_2$ in relativistic heavy ion collisions. The measurement of this observable will reveal the momentum scale at which collective expansion seizes and where the elliptic anisotropy is dominated by (semi)-hard processes.
description: 4 pages, 3 figures. Final version with minor changes. Published as: Phys. Rev. Lett. 103, 042302 (2009)
Mathematical Logic: Proof Theory, Constructive Mathematics
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: The workshop “Mathematical Logic: Proof Theory, Constructive Mathematics” was centered around proof-theoretic aspects of current mathematics, constructive mathematics and logical aspects of computational complexity.
Combinatorial Optimization
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: Combinatorial Optimization is a very active field that benefits from bringing together ideas from different areas, e.g., graph theory and combinatorics, matroids and submodularity, connectivity and network flows, approximation algorithms and mathematical programming, discrete and computational geometry, discrete and continuous problems, algebraic and geometric methods, and applications. We continued the long tradition of triannual Oberwolfach workshops, bringing together the best researchers from the above areas, discovering new connections, and establishing new and deepening existing international collaborations.
Geometric Partial Differential Equations: Theory, Numerics and Applications
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: This workshop concentrated on partial differential equations involving stationary and evolving surfaces in which geometric quantities play a major role. Mutual interest in this emerging field stimulated the interaction between analysis, numerical solution, and applications.
Variational Methods for Evolution
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: The meeting focused on the last advances in the applications of variational methods to evolution problems governed by partial differential equations. The talks covered a broad range of topics, including large deviation and variational principles, rate-independent evolutions and gradient flows, heat flows in metric-measure spaces, propagation of fracture, applications of optimal transport and entropy-entropy dissipation methods, phase-transitions, viscous approximation, and singular-perturbation problems.
Light storage protocols in Tm:YAG
Creators: name: Chanelière, T.
name: Lauro, R.
name: Ruggiero, J.
name: Gouët, J. -L. Le
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present two quantum memory protocols for solids: A stopped light approach based on spectral hole burning and the storage in an atomic frequency comb. These procedures are well adapted to the rare-earth ion doped crystals. We carefully clarify the critical steps of both. On one side, we show that the slowing-down due to hole-burning is sufficient to produce a complete mapping of field into the atomic system. On the other side, we explain the storage and retrieval mechanism of the Atomic Frequency Comb protocol. This two important stages are implemented experimentally in Tm$^{3+}$- doped yttrium-aluminum-garnet crystal.
Chemical abundance patterns in the inner Galaxy: the Scutum Red Supergiant Clusters
Creators: name: Davies, Ben
name: Origlia, Livia
name: Kudritzki, Rolf-Peter
name: Figer, Don F.
name: Rich, R. Michael
name: Najarro, Francisco
name: Negueruela, Ignacio
name: Clark, J. Simon
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The location of the Scutum Red-Supergiant (RSG) clusters at the end of the Galactic Bar makes them an excellent probe of the Galaxy's secular evolution; while the clusters themselves are ideal testbeds in which to study the predictions of stellar evolutionary theory. To this end, we present a study of the RSGs' surface abundances using a combination of high-resolution H-band spectroscopy and spectral synthesis analysis. We provide abundance measurements for elements C, O, Si, Mg, Ti, and Fe. We find that the surface abundances of the stars studied are consistent with CNO burning and deep, rotationally enhanced mixing. The average a/Fe ratios of the clusters are solar, consistent with a thin-disk population. However, we find significantly sub-solar Fe/H ratios for each cluster, a result which strongly contradicts a simple extrapolation of the Galactic metallicity gradient to lower Galacto-centric distances. We suggest that a simple one-dimensional parameterization of the Galaxy's abundance patterns is insufficient at low Galactocentric distances, as large azimuthal variations may be present. Indeed, we show that the abundances of O, Si and Mg are consistent with independent measurements of objects in similar locations in the Galaxy. In combining our results with other data in the literature, we present evidence for large-scale (~kpc) azimuthal variations in abundances at Galacto-centric distances of 3-5kpc. While we cannot rule-out that this observed behaviour is due to systematic offsets between different measurement techniques, we do find evidence for similar behaviour in a study of the barred-spiral galaxy NGC4736 which uses homogeneous methodology. We suggest that these azimuthal abundance variations could result from the intense but patchy star formation driven by the potential of the central bar.
description: 13 pages, 9 figures, accepted to ApJ
Highly productive C3H4/C3H6 trace separation by a packing polymorph of a layered hybrid ultramicroporous material
Creators: name: Gao, Mei-Yan
name: Bezrukov, Andrey
name: Song, Bai-Qiao
name: He, Meng
name: Javan Nikkah, Sousa
name: WANG, SHIQIANG
name: Kumar, Naveen
name: Darwish, Shaza
name: SENSHARMA, DEBOBROTO
name: Chenghua, Deng
name: Li, Jiangnan
name: Liu, Lunjie
name: Krishna, Rajamani
name: VANDICHEL, MATTHIAS
name: Yang, Sihai
name: ZAWOROTKO, MICHAEL
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Chemical sciences
subject: FOS: Chemical sciences

description: Ultramicroporous materials can be highly effective at trace gas separations when they offer a high density of selective binding sites. Herein, we report that sql-NbOFFIVE-bpe-Cu, a new variant of a previously reported ultramicroporous square lattice, sql, topology material, sql-SIFSIX-bpe-Zn, can exist in two polymorphs. These polymorphs, sql-NbOFFIVE-bpe-Cu-AA (AA) and sql-NbOFFIVE-bpe-Cu-AB (AB), exhibit AAAA and ABAB packing of the sql layers, respectively. Whereas NbOFFIVE-bpe-Cu-AA (AA) is isostructural with sql?SIFSIX-bpe-Zn, each exhibiting intrinsic 1D channels, sql-NbOFFIVE-bpe-Cu-AB (AB) has two types of channels, the intrinsic channels and extrinsic channels between the sql networks. Gas and temperature induced transformations of the two polymorphs of sql-NbOFFIVE-bpe-Cu were investigated by pure gas sorption, single-crystal X-ray diffraction (SCXRD), variable temperature powder X-ray diffraction (VT-PXRD), and synchrotron PXRD. We observed that the extrinsic pore structure of AB resulted in properties with potential for selective C3H4/C3H6 separation. Subsequent dynamic gas breakthrough measurements revealed exceptional experimental C3H4/C3H6 selectivity (270) and a new benchmark for productivity (118 mmol g−1) of polymer grade C3H6 (purity >99.99%) from a 1:99 C3H4/C3H6 mixture. Structural analysis, gas sorption studies, and gas adsorption kinetics enabled us to determine that a binding “sweet spot” for C3H4 in the extrinsic pores is behind the benchmark separation performance. Density-functional theory (DFT) calculations and Canonical Monte Carlo (CMC) simulations provided further insight into the binding sites of C3H4 and C3H6 molecules within these two hybrid ultramicroporous materials, HUMs. These results highlight, to our knowledge for the first time, how pore engineering through the study of packing polymorphism in layered materials can dramatically change the separation performance of a physisorbent.
Phylogenetic Applications of the Minimum Contradiction Approach on Continuous Characters
Creators: name: Thuillard, Marc
name: Fraix-Burnet, Didier
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We describe the conditions under which a set of continuous variables or characters can be described as an X-tree or a split network. A distance matrix corresponds exactly to a split network or a valued X-tree if, after ordering of the taxa, the variables values can be embedded into a function with at most a local maxima and a local minima, and crossing any horizontal line at most twice. In real applications, the order of the taxa best satisfying the above conditions can be obtained using the Minimum Contradiction method. This approach is applied to 2 sets of continuous characters. The first set corresponds to craniofacial landmarks in Hominids. The contradiction matrix is used to identify possible tree structures and some alternatives when they exist. We explain how to discover the main structuring characters in a tree. The second set consists of a sample of 100 galaxies. In that second example one shows how to discretize the continuous variables describing physical properties of the galaxies without disrupting the underlying tree structure.
description: To appear in Evolutionary Bioinformatics
Stratified Spaces: Joining Analysis, Topology and Geometry
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: For manifolds, topological properties such as Poincaré duality and invariants such as the signature and characteristic classes, results and techniques from complex algebraic geometry such as the Hirzebruch-Riemann-Roch theorem, and results from global analysis such as the Atiyah-Singer index theorem, worked hand in hand in the past to weave a tight web of knowledge. Individually, many of the above results are in the meantime available for singular stratified spaces as well. The 2011 Oberwolfach workshop “Stratified Spaces: Joining Analysis, Topology and Geometry” discussed these with the specific aim of cross-fertilization in the three contributing fields.
title: Konpetentzia digitalak. Graduko ikasleentzako formakuntza materialak: 1. Informazioa eta datuen tratamendua 1. 3. Informazio, datu eta eduki digitalen kudeaketa 1.3.3. Aipamenak nola egin. Aipamen-estiloak
title: Competencias digitales. Materiales de formación para estudiantes de grado: 1. Información y tratamiento de datos 1.3. Gestión de información, datos y contenidos digitales 1.3.3. Cómo citar. Estilos de cita
Creators: name: CRUE-REBIUN
name: Mondragon Unibertsitatea
Publisher: name: Mondragon Unibertsitatea
Year: 2020

description: Aipamenak nola egin. Aipamen-estiloak. Zer estilo erabili. Zer datu aipatu erreferentzia batean. Ondorioak. Gehiago jakiteko...
description: Cómo citar. Estilos de cita. Qué estilo de cita utilizar. Qué datos hay que incluir en una referencia. Conclusión. Para saber más...
Stochastic Analysis in Finance and Insurance
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2011
Subjects: subject: Konferenzschrift
subject: 510

description: This workshop brought together leading experts and a large number of younger researchers in stochastic analysis and mathematical finance from all over the world. During a highly intense week, participants exchanged during talks and discussions many ideas and laid foundations for new collaborations and further developments in the field.
Absence of magnetic phase separation in MnSi under pressure
Creators: name: Andreica, D.
name: de Reotier, P. Dalmas
name: Yaouanc, A.
name: Amato, A.
name: Lapertot, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report muon spin spectroscopy data (muSR) obtained under hydrostatic pressure on a large single crystal of the itinerant helimagnet MnSi, and recorded down to 0.235 K and up to 15.1 kbar. Up to the critical pressure p_c = 14.9 (2) kbar, where the magnetic order is suppressed, the muSR data unambiguously demonstrate that the ground state of the system is magnetic with no indication of any phase separation.
description: 5 pages, 6 figures