cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Universal scaling and criticality of extremes in random matrix theory
Creators: name: Saber, Sina
name: Saberi, Abbas Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We present a random-matrix realization of a two-dimensional percolation model with the occupation probability $p$. We find that the behavior of the model is governed by the two first extreme eigenvalues. While the second extreme eigenvalue resides on the moving edge of the semicircle bulk distribution with an additional semicircle functionality on $p$, the first extreme exhibits a disjoint isolated Gaussian statistics which is responsible for the emergence of a rich finite-size scaling and criticality. Our extensive numerical simulations along with analytical arguments unravel the power-law divergences due to the coalescence of the first two extreme eigenvalues in the thermodynamic limit. We develop a scaling law that provides a universal framework in terms of a set of scaling exponents uncovering the full finite-size scaling behavior of the extreme eigenvalue's fluctuation. Our study may provide a simple practical approach to capture the criticality in complex systems and their inverse problems with a possible extension to the interacting systems.
description: 5 pages, 5 figures
Quantum dynamics of one and two bosonic atoms in a combined tight-binding periodic and weak parabolic potential
Creators: name: Valiente, Manuel
name: Petrosyan, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Strongly interacting bosonic particles in a tight-binding periodic potential superimposed by a weak parabolic trap is a paradigm for many cold atom experiments. Here, after revisiting the single particle problem, we study interaction-bound dimers of bosonic atoms in the combined lattice and parabolic potential. We consider both repulsively- and attractively-bound dimers and find pronounced differences in their behaviour. We identify conditions under which attractive and repulsive dimers exhibit analogous dynamics. Our studies reveal that coherent transport and periodic oscillations of appropriately prepared one- and two-atom wavepackets can be achieved, which may facilitate information transfer in optical lattice based quantum computation schemes.
description: 6 pages, 6 figures
Master field treatment of metric perturbations sourced by the trailing string
Creators: name: Gubser, Steven S.
name: Pufu, Silviu S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present decoupled, separable forms of the linearized Einstein equations sourced by a string trailing behind an external quark moving through a thermal state of N=4 super-Yang-Mills theory. We solve these equations in the approximations of large and small wave-numbers.
description: 40 pages, 3 figures
The Sense of Art: A First Nations View
Creators: name: Kenny, Carolyn Bereznak
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: This article explores the role of the arts in whole and healthy development for Aboriginal people. It presents a concept, "the sense of art," as an important aspect of our experience, a sense that can help us to survive and thrive. It proposes that our sense of art is experienced and expressed in “qualities" in our daily life, as well as in our art forms, which give us a feeling of coherence and beauty. An example of the application of these concepts is presented through a description of a pedagogical approach in the Professional Development Teacher Education Program at Simon Fraser University's Kamloops, British Columbia, community-based site.
description: Canadian Journal of Native Education, Vol. 22 No. 1 (1998)
Alcoholic family interaction
Creators: name: McGee, Daniel R.
Publisher: name: University of British Columbia
Year: 2011

description: A repeated case study design was used that combined data from the application of the Q-technique and semi-structured family interviews, to examine the effects of alcohol on family interaction. Two families were selected on the basis that they represented examples of binge or alternating patterns of drinking and sobriety as defined by Steinglass (1987) . The families were identified and referred to the project through an Alcohol and Drug Outpatient Treatment Program. Individual family members Q-sorted 60 items drawn from the McMaster Family Assessment Device developed by Epstein, Baldwin and Bishop (1983) into seven categories that ranged from most like, to least like, their particular family, during both drinking and non-drinking times. The family as a group then together Q-sorted the items. Q-sort results for each sorting occasion were made into a correlational matrix, then subjected to a principal components analysis. The results were analyzed to identify similar themes or patterns.
PROBLEMS OF PROTECTION INSURANCE SECRET IN CRIMINAL PROCEEDINGS
Creators: name: Sukiasyan, V.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: Insurance secrecy
ECHR
court
access to information
confidential information

description: The purpose of this study is to review and systematize the controversial issues (aspects) of obtaining insurance secrets existing in law enforcement practice. To achieve this goal, the scientific article sets out the task of giving a solution that, from the point of view of protecting the insurance secret, will not cause undue interference in the rights of persons using the protection of insurance secrets. During the study, both scientific (analysis, synthesis) and special (formal-logical, comparative-legal) methods were used.
SOCIAL ENTREPRENEURSHIP IN RUSSIA
Creators: name: Shpinev Iu.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: investment in social entrepreneurship
social entrepreneurship
social investment
investment
social-transformative investment
impact investment.

description: The article deals with the issues of legal regulation of social investment in Russia. The most acute problem of social entrepreneurship is the lack of funding. The article attempts to classify investments in social entrepreneurship by the ratio of the expected economic benefit and the socially directed effect from traditional investments to charity. The paper notes that the main areas of financial support for social entrepreneurship in Russia can be such well-established financial institutions in developed countries as crowdfunding, social and green bonds, and meson financing. Another important issue related to social entrepreneurship, according to the author, is the place of non-profit organizations in the system of social entrepreneurship. This issue is particularly relevant now, since the current Russian legislation defines social entrepreneurship as commercial enterprises. In conclusion, it is concluded that despite the fact that the trends of social entrepreneurship in recent decades have appeared in developed Western countries, our country has its own rich experience in solving social problems, which can and should be used in the new socio-economic conditions.
Dressed behavior of the quasiparticles lifetime in the unitary limit of two unconventional superconductors
Creators: name: Contreras, P.
name: Osorio, Dianela
name: Beliayev, E. Yu.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We compare the quasiparticle lifetime behavior in the unitary limit of two unconventional superconductors dressed by non-magnetic impurity scattering to differentiate an anomalous functional behavior in its shape when the disorder concentration is changed in a triplet paired model with respect to the well behave singlet model. For singlet paired superconductors, the functional shape of the lifetime due to elastic scattering around the nodal regions does not change with the change of the disorder concentration, but for a triplet model with a tiny gap, an anomalous drop in shape is observed only when small values of disordering are added. We use a 2D tight-binding parametrization to study the reduced phase space of the first Brillouin zone, where the low energy scattering is restricted to the nodal/quasinodal regions for two irreducible representations of the crystal lattice.
description: 12 pages, 3 figures, 33 references, 3 misspellings typos corrected
Exploiting co-execution with oneAPI: heterogeneity from a modern perspective
Creators: name: Nozal, Raúl
name: Bosque, Jose Luis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences
subject: C.1.2; C.1.4; C.1.3; D.1.3; D.2.0; D.2.3; D.2.11; D.2.13; D.4.7; D.4.9; E.1

description: Programming efficiently heterogeneous systems is a major challenge, due to the complexity of their architectures. Intel oneAPI, a new and powerful standards-based unified programming model, built on top of SYCL, addresses these issues. In this paper, oneAPI is provided with co-execution strategies to run the same kernel between different devices, enabling the exploitation of static and dynamic policies. On top of that, static and dynamic load-balancing algorithms are integrated and analyzed. This work evaluates the performance and energy efficiency for a well-known set of regular and irregular HPC benchmarks, using an integrated GPU and CPU. Experimental results show that co-execution is worthwhile when using dynamic algorithms, improving efficiency even more when using unified shared memory.
description: Accepted in Euro-Par 2021 (27th International Conference on Parallel and Distributed Computing). 16 pages, 9 figures, 1 listing. Conference paper - extended with API
Uncertainties of the masses of black holes and Eddington ratios in AGN
Creators: name: Collin, Suzy
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Black hole masses in Active Galactic Nuclei have been determined in 35 objects through reverberation mapping of the emission line region. I mention some uncertainties of the method, such as the ``scale factor'' relating the Virial Product to the mass, which depends on the unknown structure and dynamics of the Broad Line Region. When the black hole masses are estimated indirectly using the empirical size-luminosity relation deduced from this method, the uncertainties can be larger, especially when the relation is extrapolated to high and low masses and/or luminosities. In particular they lead to Eddington ratios of the order of unity in samples of Narrow Line Seyfert 1. As the optical-UV luminosity is provided by the accretion disk, the accretion rates can be determined and are found to be much larger than the Eddington rates. So, accretion must be performed at a super-critical rate through a slim disk, resulting in rapid growth of the black holes. The alternative is that the mass determination is wrong at this limit.
description: 5 pages, 2 figures. To appear in the proceedings of "Black Holes: from Stars to Galaxies", IAU Symp. No. 238, V. Karas & G. Matt (eds.), Cambridge University Press
Susceptibility of AutoML mortality prediction algorithms to model drift caused by the COVID pandemic
Creators: name: Kagerbauer, Simone Maria
name: Ulm, Bernhard
name: Podtschaske, Armin Horst
name: Andonov, Dimislav Ivanov
name: Blobner, Manfred
name: Jungwirth, Bettina
name: Graessner, Martin
Publisher: name: Universität Ulm
Year: 2024
Subjects: subject: Model deterioration
subject: Data shift
subject: Covariate shift
subject: Concept drift
subject: COVID-19
subject: AutoML
subject: DDC 610 / Medicine & health

description: Background Concept drift and covariate shift lead to a degradation of machine learning (ML) models. The objective of our study was to characterize sudden data drift as caused by the COVID pandemic. Furthermore, we investigated the suitability of certain methods in model training to prevent model degradation caused by data drift. Methods We trained different ML models with the H2O AutoML method on a dataset comprising 102,666 cases of surgical patients collected in the years 2014–2019 to predict postoperative mortality using preoperatively available data. Models applied were Generalized Linear Model with regularization, Default Random Forest, Gradient Boosting Machine, eXtreme Gradient Boosting, Deep Learning and Stacked Ensembles comprising all base models. Further, we modified the original models by applying three different methods when training on the original pre-pandemic dataset: (1) we weighted older data weaker, (2) used only the most recent data for model training and (3) performed a z-transformation of the numerical input parameters. Afterwards, we tested model performance on a pre-pandemic and an in-pandemic data set not used in the training process, and analysed common features. Results The models produced showed excellent areas under receiver-operating characteristic and acceptable precision-recall curves when tested on a dataset from January-March 2020, but significant degradation when tested on a dataset collected in the first wave of the COVID pandemic from April-May 2020. When comparing the probability distributions of the input parameters, significant differences between pre-pandemic and in-pandemic data were found. The endpoint of our models, in-hospital mortality after surgery, did not differ significantly between pre- and in-pandemic data and was about 1% in each case. However, the models varied considerably in the composition of their input parameters. None of our applied modifications prevented a loss of performance, although very different models emerged from it, using a large variety of parameters. Conclusions Our results show that none of our tested easy-to-implement measures in model training can prevent deterioration in the case of sudden external events. Therefore, we conclude that, in the presence of concept drift and covariate shift, close monitoring and critical review of model predictions are necessary.
Extra Neutral Gauge Boson from Two Versions of the 3-3-1 Model in Future Linear Colliders
Creators: name: Barreto, E. Ramirez
name: Coutinho, Y. A.
name: Borges, J. Sá
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Our aim is to establish some signatures of the extra gauge boson ${Z^\prime}$, predicted in two versions of ${SU (3)_C \times SU (3)_L \times U (1)_X}$ model and to show possible differences between these signatures. First, by considering the process $e^+ + e^- \longrightarrow μ^+ +μ^- $, we obtain some observables and next, by considering additional hadronic final states, we obtain lower bounds for $M_{Z^\prime}$, within 95% C.L.. We also include our preliminary results concerning $p \bar p$ and $p p$ collisions in order to support our conclusions about the possibility to discriminate the various versions of 3-3-1 model. From our analysis we conclude that linear colliders can show a clear signature for the existence of $Z^\prime$ predicted in the 3-3-1 model and also that it can discriminate the versions.
description: 24 pages, 10 figures and 1 table. Accepted for publication in Eur. Phys. J. C
A theoretical framework for the pricing of contingent claims in the presence of model uncertainty
Creators: name: Denis, Laurent
name: Martini, Claude
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H05, 60G44 (Primary) 31C15 (Secondary)

description: The aim of this work is to evaluate the cheapest superreplication price of a general (possibly path-dependent) European contingent claim in a context where the model is uncertain. This setting is a generalization of the uncertain volatility model (UVM) introduced in by Avellaneda, Levy and Paras. The uncertainty is specified by a family of martingale probability measures which may not be dominated. We obtain a partial characterization result and a full characterization which extends Avellaneda, Levy and Paras results in the UVM case.
description: Published at http://dx.doi.org/10.1214/105051606000000169 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Triplet resonating valence bond theory and transition metal chalcogenides
Creators: name: König, Elio J.
name: Komijani, Yashar
name: Coleman, Piers
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a quantum spin liquid theory for quantum magnets with easy-plane ferromagnetic exchange. These strongly entangled quantum states are obtained by dimer coverings of 2D lattices with triplet $S = 1, m_z = 0$ bonds, forming a triplet resonating valence bond (tRVB) state. We discuss the conditions and the procedure to transfer well-known results from conventional singlet resonating valence bond theory to tRVB. Additionally, we present mean field theories of Abrikosov fermions on 2D triangular and square lattices, which can be controlled in an appropriate large $N$ limit. We also incorporate the effect of charge doping which stabilizes $p+ip$-wave superconductivity. Beyond the pure theoretical interest, our study may help to resolve contradictory statements on certain transition metal chalcogenides, including 1T-TaS$_2$, as a potential tRVB spin-liquid.
description: 10 pages + 3 pages Appendix, 6 figures
The Importance of Reverse Tuition Agreements to Self-Determination in the Educational System: A Cree First Nation
Creators: name: Tsuji, Leonard J.S.
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: Indian and Northern Affairs Canada (INAC)funds only on-reserve band mem­bers for primary and secondary education. Off-reserve band members do not receive educational funding from INAC; their education falls under the jurisdic­tion of local provincial schools boards. Thus First Nations have been segregated into on-reserve and off-reserve designations with respect to primary and secon­dary education even though all the children are part of one First Nation. If no school exists on a reserve the First Nation through a tuition agreement can pur­ chase educational services from a provincial school board. Thus all children (on and off-reserve) would attend one school in this scenario. However, if a school is established on a First Nation, off-reserve band members cannot attend the First Nation school (unless they pay their own tuition), because INAC provides no edu­cational funding at this level. In this article, I report on a novel solution to this problem proposed by Moose Cree Education Authority: reverse tuition agree­ments. A reverse tuition agreement reverses the role of First Nations and provin­cial school boards, that is, the provincial school board purchases educational services from the First Nation for off-reserve band members. There is nothing im­ proper (i.e., illegal) with this type of arrangement; however, the Moose Cree Edu­ cation Authority has had difficulty trying to implement this type of agreement. Although quality of education has been presented as a major issue, it is shown not to be the real issue, which is local control of education. Empowerment of First Na­tion communities is what is at stake.
description: Canadian Journal of Native Education, Vol. 22 No. 1 (1998)
On the extraction of the quark mass ratio (m_d - m_u)/m_s from Gamma(eta' -> pi^0 pi^+ pi^-)/Gamma(eta' -> eta pi^+ pi^-)
Creators: name: Borasoy, B.
name: Meißner, Ulf-G.
name: Nißler, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The claim that the light quark mass ratio (m_d - m_u)/m_s can be extracted from the decay width ratio Gamma(eta' -> pi^0 pi^+ pi^-)/Gamma(eta' -> eta pi^+ pi^-) is critically investigated within a U(3) chiral unitary framework. The influence of the recent VES data on the eta' -> eta pi^+ pi^- decay is also discussed.
description: 9 pages, 1 figure, 6 tables
Testing simplified protein models of the hPin1 WW domain
Creators: name: Cecconi, Fabio
name: Guardiani, Carlo
name: Livi, Roberto
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The WW domain of the human Pin1 protein for its simple topology and the large amount of experimental data is an ideal candidate to assess theoretical approaches to protein folding. The purpose of the present work is to compare the reliability of the chemically-based Sorenson/Head-Gordon (SHG) model and a standard native centric model in reproducing through molecular dynamics simulations some of the well known features of the folding transition of this small domain. Our results show that the Gō model correctly reproduces the cooperative, two-state, folding mechanism of the WW-domain, while the SHG model predicts a transition occurring in two stages: a collapse followed by a structural rearrangement. The lack of a cooperative folding in the SHG simulations appears to be related to the non-funnel shape of the energy landscape featuring a partitioning of the native valley in sub-basins corresponding to different chain chiralities. However the SHG approach remains more reliable in estimating the $Φ$-values with respect to Gō-like description. This may suggest that the WW-domain folding process is stirred by energetic and topological factors as well, and it highlights the better suitability of chemically-based models in simulating mutations.
description: RevTex4: 12 pages and 13 eps-figure files
Localization Transition of Biased Random Walks on Random Networks
Creators: name: Sood, Vishal
name: Grassberger, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We study random walks on large random graphs that are biased towards a randomly chosen but fixed target node. We show that a critical bias strength b_c exists such that most walks find the target within a finite time when b>b_c. For b
description: 4 pages, includes 4 figures
Properties of entangled photon pairs generated in one-dimensional nonlinear photonic-band-gap structures
Creators: name: Perina, Jan
name: Centini, Marco
name: Sibilia, Concita
name: Bertolotti, Mario
name: Scalora, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have developed a rigorous quantum model of spontaneous parametric down-conversion in a nonlinear 1D photonic-band-gap structure based upon expansion of the field into monochromatic plane waves. The model provides a two-photon amplitude of a created photon pair. The spectra of the signal and idler fields, their intensity profiles in the time domain, as well as the coincidence-count interference pattern in a Hong-Ou-Mandel interferometer are determined both for cw and pulsed pumping regimes in terms of the two-photon amplitude. A broad range of parameters characterizing the emitted down-converted fields can be used. As an example, a structure composed of 49 layers of GaN/AlN is analyzed as a suitable source of photon pairs having high efficiency.
description: 14 pages, 23 figures
UV Bright Globular Clusters in M87: More Evidence for Super-helium-rich Stellar Populations?
Creators: name: Kaviraj, S.
name: Sohn, S. T.
name: O'Connell, R. W.
name: Lee, Y. -W.
name: Yoon, S. -J.
name: Yi, S. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the UV and optical properties of 38 massive GCs in M87, imaged using the HST/STIS and WFPC2 instruments. The majority of these GCs appear extremely bright in the FUV - roughly a magnitude brighter than their Galactic counterparts with similar metallicities. The observed FUV flux is several times larger than predictions of canonical old stellar population models. These canonical models, which assume a fiducial helium enrichment parameter, dY/dZ=2, are able to reproduce the observed FUV fluxes only if ages are 3--5 Gyr larger than the WMAP age of the Universe, although the same models fit the UV photometry of Galactic and M31 GCs for ages less than the WMAP age. A similar discrepancy is found between the mass-weighted and UV-luminosity weighted ages of the massive Galactic GC omega Cen, whose CMD (including peculiar features on its well-populated horizontal branch) can be accurately reproduced by invoking a small super-He-rich (dY/dZ ~ 90) stellar component. By comparison to omega Cen, we propose that the majority of M87 GCs in our sample contain strong signatures of similarly minor super-He-rich sub-components. Although we cannot prove or disprove the extreme helium scenario at the moment, we show that the same phenomenon that causes the extended horizontal branch of omega Cen explains the UV brightness of our sample. If this is indeed due to the extreme helium, this study would be the first to find its signatures in extragalactic objects.
description: 19 pages, 10 figures, accepted for publication in MNRAS
Impact of water vapor seeing on mid-infrared high-contrast imaging at ELT scale
Creators: name: Absil, Olivier
name: Delacroix, Christian
name: de Xivry, Gilles Orban
name: Pathak, Prashant
name: Willson, Matthew
name: Berio, Philippe
name: van Boekel, Roy
name: Matter, Alexis
name: Defrere, Denis
name: Burtscher, Leo
name: Woillez, Julien
name: Brandl, Bernhard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The high-speed variability of the local water vapor content in the Earth atmosphere is a significant contributor to ground-based wavefront quality throughout the infrared domain. Unlike dry air, water vapor is highly chromatic, especially in the mid-infrared. This means that adaptive optics correction in the visible or near-infrared domain does not necessarily ensure a high wavefront quality at longer wavelengths. Here, we use literature measurements of water vapor seeing, and more recent infrared interferometric data from the Very Large Telescope Interferometer (VLTI), to evaluate the wavefront quality that will be delivered to the METIS mid-infrared camera and spectrograph for the Extremely Large Telescope (ELT), operating from 3 to 13 μm, after single-conjugate adaptive optics correction in the near-infrared. We discuss how the additional wavefront error due to water vapor seeing is expected to dominate the wavefront quality budget at N band (8-13 μm), and therefore to drive the performance of mid-infrared high-contrast imaging modes at ELT scale. Then we present how the METIS team is planning to mitigate the effect of water vapor seeing using focal-plane wavefront sensing techniques, and show with end-to-end simulations by how much the high-contrast imaging performance can be improved.
description: 13 pages, paper presented at SPIE Astronomical Telescopes + Instrumentation 2022
Factors and Themes in Native Education and School Boards/First Nations Tuition Negotiations and Tuition Agreement Schooling
Creators: name: Burns, George E.
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: The Aboriginal people adapted, thrived, and flourished for thousands of years be­ fore European occupation of North America. This overall success was largely a result of the interconnectedness of their social, personality, and cultural systems, which were notably indigenous in both spirit and character. Thereafter, these sys­tems, including institutions comprising the social system as in the case of kin­ ship, spirituality, political, economic, education, and political structures, have undergone the eroding effects of colliding Western world views and Indigenous world views, the former being steeped in the hegemonic aspirations and expecta­ tionsofEurocentricity. Thisarticleexaminesarangeofhegemonicfactorsand themes pertaining to the Indian residential school era and tire master tuition agreement eras in Canada. The article suggests that in the absence of radical chan­ges pertaining specifically to First Nations/provincial school boards tuition agree­ment negotiations and tuition schooling (where First Nations have decided this is the preferred option among various alternatives) tuition agreement schooling will continue to be noninclusive, racist, discriminatory, and assimilative in practice. The article recommends a praxis of Native control of tuition negotiations and tui­tion schooling as a strategy for intervening in the neocolonialist traditions and practices of provincial school board systems and their schools, where feasible.
description: Canadian Journal of Native Education, Vol. 22 No. 1 (1998)
The Cluster-Merger Shock in 1E 0657-56: Faster than the Speeding Bullet?
Creators: name: Milosavljevic, Milos
name: Koda, Jun
name: Nagai, Daisuke
name: Nakar, Ehud
name: Shapiro, Paul R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Shock waves driven in the intergalactic medium during the merging of galaxy clusters have been observed in X-ray imaging and spectroscopy. Fluid motions inferred from the shock strength and morphology can be compared to the cold dark matter (CDM) distribution inferred from gravitational lensing. A detailed reconstruction of the CDM kinematics, however, must take into account the nontrivial response of the fluid intracluster medium to the collisionless CDM motions. We have carried out two-dimensional simulations of gas dynamics in cluster collisions. We analyze the relative motion of the clusters, the bow shock wave, and the contact discontinuity and relate these to X-ray data. We focus on the "bullet cluster," 1E 0657-56, a near head-on collision of unequal-mass clusters, for which the gas density and temperature jumps across the prominent bow shock imply a high shock velocity 4,700 km/s. The velocity of the fluid shock has been widely interpreted as the relative velocity of the CDM components. This need not be the case, however. An illustrative simulation finds that the present relative velocity of the CDM halos is 16% lower than that of the shock. While this conclusion is sensitive to the detailed initial mass and gas density profile of the colliding clusters, such a decrease of the inferred halo relative velocity would increase the likelihood of finding 1E 0657-56 in a LambdaCDM universe.
description: 4 pages, 4 figures
Depletion forces between non-spherical objects
Creators: name: König, P. -M.
name: Roth, R.
name: Dietrich, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We extend the insertion approach for calculating depletion potentials to the case of non-spherical solutes. Instead of a brute-force calculation we suggest to employ the recently developed curvature expansion of density profiles close to complexly shaped walls. The approximations introduced in the calculation by the use of the curvature expansion and of weight functions for non-spherical objects can be tested independently. As an application for our approach we calculate and discuss the depletion potential between two hard oblate ellipsoids in a solvent of hard spheres. For this system we calculate the entropic force and torque acting on the objects.
description: 8 pages, 5 figures
Twist Symmetry and Gauge Invariance
Creators: name: Chaichian, M.
name: Tureanu, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By applying properly the concept of twist symmetry to the gauge invariant theories, we arrive at the conclusion that previously proposed in the literature noncommutative gauge theories, with the use of $\star$-product, are the correct ones, which possess the twisted Poincaré symmetry. At the same time, a recent approach to twisted gauge transformations is in contradiction with the very concept of gauge fields arising as a consequence of {\it local} internal symmetry. Detailed explanations of this fact as well as the origin of the discrepancy between the two approaches are presented.
description: 10 pages
Quantum MHV Diagrams
Creators: name: Brandhuber, Andreas
name: Travaglini, Gabriele
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Over the past two years, the use of on-shell techniques has deepened our understanding of the S-matrix of gauge theories and led to the calculation of many new scattering amplitudes. In these notes we review a particular on-shell method developed recently, the quantum MHV diagrams, and discuss applications to one-loop amplitudes. Furthermore, we briefly discuss the application of D-dimensional generalised unitarity to the calculation of scattering amplitudes in non-supersymmetric Yang-Mills.
description: 17 pages, 7 figures; based on two talks given at the 7th Workshop On Continuous Advances In QCD, 11-14 May 2006, Minneapolis, Minnesota
Us/Them, Me/You: Who? (Re)Thinking the Binary of First Nations and Non-First Nations
Creators: name: Calliou, Sharilyn
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: Names speak who we are and who we do not wish to be. Issues of belonging, entitlement, representation, and autonomy related to the naming represented in the socially constructed binary—First Nations and non-First Nations—are briefly examined. A legacy of colonialism is the dichotomy of us/them, characterized with a variety of terms. These include, among others, Native, Status Indian, Amerindian, Aboriginal, First Nations, Canadians, Euro-Canadians, Anglo-Canadian, and White. Just when is it appropriate to use the terms? The terms exclude individuals of mixed political, cultural, or other heritages, or recent immigrant Brothers and Sisters. Although the binary is necessary to explain longstanding geopolitical, spiritual, economic, and other injustices, the dualism obscures nuanced understandings of interrelated issues of class, gender or other discrimination. Unthinking use of the terms of this dichotomy contradicts some traditional teachings, which state that all humans are members of the same human family. (Over)Reliance on this dichotomy may enable forgetfulness about other binaries to consider.
description: Canadian Journal of Native Education, Vol. 22 No. 1 (1998)
ABOUT THE REPO AGREEMENT IN RUSSIAN LEGISLATION
Creators: name: Begmatova, Shaxlo
Publisher: name: Zenodo
Year: 2023

description: The article deals with the repurchase agreement in the Russian legislation. The article analyzes the rules governing the grounds for concluding and terminating a repurchase agreement, the subject of the agreement, and defines the rights and obligations of the parties. In many respects, the norm contained in the law «On the securities market» does not sufficiently regulate relations under the repurchase agreement, so we have to refer to the Civil Code of the Russian Federation and other regulatory legal acts. The necessity of introducing a rule on the repurchase agreement by the legislator is justified. The author compares the concepts of «repurchase agreement» and « repurchase operations». The article reveals the weak legal regulation of the repo agreement in Russia and some other problems of this agreement.
The conditions that facilitate or hinder adjustment for graduate students in counselling psychology
Creators: name: Mah, Deveda Lynn
Publisher: name: University of British Columbia
Year: 2011

description: Flanagan's (1954) critical incident technique was utilized to explore what facilitates or hinders adjustment to graduate school. Twenty-two graduate students from the Department of Counselling Psychology at the University of British Columbia were recruited for this study. In interviews that were audio-taped, each individual reported events that either facilitated or hindered their adjustment to graduate school. Of 227 incidents reported from participants, nine categories were formed. Using percentage of agreement between judges in placing incidents into categories, reliability of the categories was at 94.4%.
Pulsar twinkling and relativity
Creators: name: Grenier, Isabelle A.
name: Harding, Alice K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The number of pulsars with detected emission at X-ray and gamma-ray energies has been steadily growing, showing that beams of high-energy particles are commonly accelerated in pulsar magnetospheres, even though the location and number of acceleration sites remain unsettled. Acceleration near the magnetic poles, close to the polar cap surface or to higher altitudes in the slot gap along the last open field lines, involves an electric field component due to inertial-frame dragging. Acceleration can also take place in the outer magnetosphere where charge depletion due to global currents causes a large electric field along the magnetic field lines. All models require a detailed knowledge of the open magnetosphere geometry and its relativistic distortions. Observational trends with age, spin-down power and magnetic field as well as population synthesis studies in the Galactic disc and the nearby Gould Belt provide useful, however not yet conclusive, constraints on the competing models.
description: 9 pages, 5 figures, to be published in proceedings of the Albert Einstein Century International Conference, Paris 2005
Chandra Observation of the Interaction of the Radio Source and Cooling Core in Abell 2063
Creators: name: Kanov, Kalin N.
name: Sarazin, Craig L.
name: Hicks, Amalia K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a Chandra observation of the cooling core cluster Abell 2063. Spectral analysis shows that there is cool gas (2 keV) associated with the cluster core, which is more than a factor of 2 cooler than the outer cluster gas (4.1 keV). There also is spectral evidence for a weak cooling flow, Mdot ~ 20 Msun/yr. The cluster exhibits a complex structure in the center that consists of several bright knots of emission, a depression in the emission to the north of the center of the cluster, and a shell of emission surrounding it. The depression in the X-ray emission is coincident with the position of the north-eastern radio lobe of the radio source associated with the cluster-central galaxy. The shell surrounding this region appears to be hotter, which may be the result of a shock that has been driven into the gas by the radio source. The power output of the radio source appears to be sufficient to offset the cooling flow, and heating of the gas through shocks is a possible explanation of how the energy transfer is established.
description: Astrophysical Jounal, in press, 26 page with 9 figures, some in color. Uses AASTEX latex
Strong light-matter coupling: parametric interactions in a cavity and free-space
Creators: name: Mekhov, I. B.
name: Egorov, V. S.
name: Lebedev, V. N.
name: Moroshkin, P. V.
name: Chekhonin, I. A.
name: Bagayev, S. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We consider parametric interactions of laser pulses in a coherent macroscopic ensemble of resonant atoms, which are possible in the strong coupling regime of light-matter interaction. The spectrum condensation (lasing at collective vacuum Rabi sidebands) was studied in an active cavity configuration. Parametric interactions under the strong light-matter coupling were proved even in free space. In contrast to bichromatic beats in a cavity, they were shown to appear due to interference between polaritonic wave packets of different group velocities.
description: 4 pages, 2 figures
Analyticity and Riesz basis property of semigroups associated to damped vibrations
Creators: name: Jacob, Birgit
name: Trunk, Carsten
name: Winklmeier, Monika
Publisher: name: arXiv
Year: 2007
Subjects: subject: Spectral Theory (math.SP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 47A10, 47A70, 34G10, 47D06

description: Second order equations of the form $z'' + A_0 z + D z'=0$ in an abstract Hilbert space are considered. Such equations are often used as a model for transverse motions of thin beams in the presence of damping. We derive various properties of the operator matrix $A$ associated with the second order problem above. We develop sufficient conditions for analyticity of the associated semigroup and for the existence of a Riesz basis consisting of eigenvectors and associated vectors of $A$ in the phase space.
Enabling the Autumn Seed: Toward a Decolonized Approach to Aboriginal Knowledge, Language, and Education
Creators: name: Battiste, Marie
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: Aboriginal communities continue to suffer the effects of colonization and im­perialistic policies that erode the base of Indigenous knowledge necessary for the healing and development of Aboriginal peoples. Based on fallacious assumptions about English language superiority and its Eurocentric educational foundations that support linguistic imperialism and Aboriginal oppression, the federal govern­ment has entered into agreements with First Nations bands that require them to adopt provincial curricula as a minimum requirement to assume control of their education. In almost all of these provinces, these curricula are developed away from Aboriginal communities, without Aboriginal input, and written in English. In effect, the curricula serve as another colonial instrument to deprive Aboriginal communities of their knowledge, languages, and cultures. Without Aboriginal languages and knowledge, Aboriginal communities can do little to recover their losses or transform their nations using their legitimate knowledge and languages. This article discusses the need for Aboriginal knowledge to be retained through Aboriginal languages supported in curricula. It also challenges the Eurocentric assumptions that have pushed Aboriginal knowledge and languages to the mar­ gins and raises current Aboriginal educational concerns regarding a transformed curriculum that embraces the rich diversity of knowledge and provides the neces­sary consciousness to enable Aboriginal humanity to be respected and protected.
description: Canadian Journal of Native Education, Vol. 22 No. 1 (1998)
Rotation and massive close binary evolution
Creators: name: Langer, N.
name: Cantiello, M.
name: Yoon, S. -C.
name: Hunter, I.
name: Brott, I.
name: Lennon, D. J.
name: de Mink, S. E.
name: Verheijdt, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the role of rotation in massive close binary systems. Rotation has been advocated as an essential ingredient in massive single star models. However, rotation clearly is most important in massive binaries where one star accretes matter from a close companion, as the resulting spin-up drives the accretor towards critical rotation. Here, we explore our understanding of this process, and its observable consequences. When accounting for these consequences, the question remains whether rotational effects in massive single stars are still needed to explain the observations.
description: invited review for Proceedings of IAU-Symp. 250 on Massive Stars as Cosmic Engines, F. Bresolin, P. Crowther & J. Puls, eds
Noether symmetry approach in matter-dominated cosmology with variable G and Lambda
Creators: name: Bonanno, Alfio
name: Esposito, Giampiero
name: Rubano, Claudio
name: Scudellaro, Paolo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the framework of renormalization-group improved cosmologies, we use the Noether symmetry approach to get exact and general integration of the matter-dominated cosmological equations. This is performed by using an expression of Lambda=Lambda(G) determined by the method itself. We also work out a comparison between such a model and the concordance LambdaCDM model as to the magnitude-redshift relationship, hence showing that no appreciable differences occur.
description: 22 pages, 2 figures
Effective Utilization of Electronic Resources in Selected Agriculture Based Research Institutes in Tamil Nadu.pdf
Creators: name: Thangiah, Raja
Publisher: name: figshare
Year: 2021
Subjects: subject: Library and Information Studies
subject: FOS: Media and communications

description: The present study describes the effective utilization of electronic resources in agriculture based research institutes in Tamilnadu. This study reveals that the availability of electronic resources, frequently use of electronic resources, purpose of using electronic resources and various types of questions raised from the users. This study concludes that most of the users benefited through electronic resources for research in the agricultural research fields.
Information Loss as a Foundational Principle for the Second Law of Thermodynamics
Creators: name: Duncan, T. L.
name: Semura, J. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a previous paper [1] we considered the question, "What underlying property of nature is responsible for the second law?" A simple answer can be stated in terms of information: The fundamental loss of information gives rise to the second law. This line of thinking highlights the existence of two independent but coupled sets of laws: Information dynamics and energy dynamics. The distinction helps shed light on certain foundational questions in statistical mechanics. For example, the confusion surrounding previous "derivations" of the second law from energy dynamics can be resolved by noting that such derivations incorporate one or more assumptions that correspond to the loss of information. In this paper we further develop and explore the perspective in which the second law is fundamentally a law of information dynamics.
description: To appear in Foundations of Physics
Understanding the experience of the man who assaults his wife
Creators: name: Hampson, Douglas Arthur
Publisher: name: University of British Columbia
Year: 2011

description: Three men who assaulted their wives participated in semi-structured, in-depth interviews in an attempt to understand the experience that accompanied each man's "assaultive" decision. The study assumes that spouse abuse can be best understood from an ecological point of view which, it has been argued, warrants a hermeneutical approach to research (Young & Collin, 1988). The study focuses on the description and understanding of specific life experiences of the participants through the application and development of interpretive categories or themes. Three themes that are common to all the participants are identified and discussed. It was found that: all the participants experienced misunderstanding between themselves and their partner before the assaultive situation; all the participants experienced a sense of emotional distress prior to and at moments during the assault; all the participants experienced a sense of justification in the abuse which they were displaying. The results of this research highlight the centrality of empathic understanding in the study and treatment of domestic violence.