cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Heavy Flavor Jet Quenching in Relativistic Heavy Ion Collisions at the LHC
Creators: Wang, Tingting
Publisher: name: Columbia University
Year: 2017
Subjects: Physics
Particles (Nuclear physics)
Particles (Nuclear physics)--Flavor
Collisions (Nuclear physics)
Large Hadron Collider (France and Switzerland)

description: This thesis describes the measurement of inclusive heavy flavor jet suppression in collisions between two lead nuclei with the center of mass energy per nucleon-nucleon pair of 2.76 TeV with the ATLAS detector at the Large Hadron Collider (LHC). The measurement of the heavy flavor jets and b-jet quenching at the LHC is important in the path towards the understanding of QGP. Parton showers initiated by heavy quarks are expected to be sensitive to the medium in a different way as the large quark mass suppresses the medium-induced radiation. This results in a different interplay between radiative and collisional energy loss. Therefore the analysis of the properties of jet associated with b hadrons (b-jet) is useful in understanding energy loss in the QGP. The inclusive b-jet suppression R AA has been measured using muons in jets, where a b-jet corresponds to a jet with at least one muon clustered with the anti-k t algorithm with parameter R = 0.2. The b-jets of p T between 30 GeV - 150 GeV are identified by the semileptonic decay of beauty hadrons. Muons originating from background sources, primarily Charm hadrons, pion and kaon decays, have been removed from the analysis using template fits to the distribution of a quantity(p T^rel) capable of statistically distinguishing between signal and background. The measured nuclear modification factor R AA has been presented in different centrality bins as a function of the b-jet transverse momentum p T.The results of R AA indicate that the yield of the most central event (0-10%) experiences more suppression compared to the most peripheral event (60-80%) by a factor of approximate 2.
Hedge Fund Essays
Creators: Gorovyy, Sergiy
Publisher: name: Columbia University
Year: 2012
Subjects: Finance

description: This dissertation analyzes hedge fund leverage and its determinants, investigates optimal hedge fund manager behavior induced by hedge fund contracts, and uncovers an evidence of a hedge fund transparency risk premium. The first essay investigates the leverage of hedge funds in the time series and cross-section. Hedge fund leverage is found to be counter-cyclical to the leverage of listed financial intermediaries. Changes in hedge fund leverage tend to be more predictable by economy-wide factors than by fund-specific characteristics. In particular, decreases in funding costs and increases in market values both forecast increases in hedge fund leverage.  Decreases in fund return volatilities predict future increases in leverage. In the second essay, I investigate hedge fund compensation from an investor's point of view in a model with a risk neutral fund manager who can continuously rebalance the fund's holdings. I solve for the optimal leverage level in a fund that has a compensation contract with a high-water mark and hurdle rate provisions where management and performance fees are paid at discrete time moments. The compensation contract induces risk-loving behavior with managers often choosing the maximum leverage. Third essay investigates risk premia associated with hedge fund transparency, liquidity, complexity, and concentration over the period from April 2006 to March 2009. Consistent with factor models of risk, we find that during normal times low-transparency, low-liquidity, and high-concentration funds delivered a return premium, with economic magnitudes of 5% to 10% per year, while during bad states of the economy, these funds experienced significantly lower returns. We also offer a novel explanation for why highly concentrated funds command a risk premium by revealing that the risk premium is mostly prevalent among non-transparent funds where investors are unaware about the exact risks they are facing and hence cannot diversify them away.
Scaling of avalanche queues in directed dissipative sandpiles
Creators: name: Tadic, Bosiljka
name: Priezzhev, Vyatcheslav
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We simulate queues of activity in a directed sandpile automaton in 1+1 dimensions by adding grains at the top row with driving rate $0 < r \leq 1$. The duration of elementary avalanches is exactly described by the distribution $P_1(t) \sim t^{-3/2}\exp{(-1/L_c)}$, limited either by the system size or by dissipation at defects $L_c= \min (L,ξ)$. Recognizing the probability $P_1$ as a distribution of service time of jobs arriving at a server with frequency $r$, the model represents a new example of the $ $ server queue in the queue theory. We study numerically and analytically the tail behavior of the distributions of busy periods and energy dissipated in the queue and the probability of an infinite queue as a function of driving rate.
description: 11 pages, 9 figures; To appear in Phys. Rev. E
A partial knowledge of friends of friends speeds social search
Creators: name: Elsisy, Amr
name: Szymanski, Boleslaw K.
name: Plum, Jasmine A.
name: Qi, Miao
name: Pentland, Alex
Publisher: name: arXiv
Year: 2019
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Milgram empirically showed that people knowing only connections to their friends could locate any person in the U.S. in a few steps. Later research showed that social network topology enables a node aware of its full routing to find an arbitrary target in even fewer steps. Yet, the success of people in forwarding efficiently knowing only personal connections is still not fully explained. To study this problem, we emulate it on a real location-based social network, Gowalla. It provides explicit information about friends and temporal locations of each user useful for studies of human mobility. Here, we use it to conduct a massive computational experiment to establish new necessary and sufficient conditions for achieving social search efficiency. The results demonstrate that only the distribution of friendship edges and the partial knowledge of friends of friends are essential and sufficient for the efficiency of social search. Surprisingly, the efficiency of the search using the original distribution of friendship edges is not dependent on how the nodes are distributed into space. Moreover, the effect of using a limited knowledge that each node possesses about friends of its friends is strongly nonlinear. We show that gains of such use grow statistically significantly only when this knowledge is limited to a small fraction of friends of friends.
Time to retire? A register-based study on GP behaviour prior to retirement
Creators: name: O'Halloran, Jamie
name: Oxholm, Anne Sophie
name: Pedersen, Line Bjørnskov
name: Gyrd-Hansen, Dorte
Publisher: name: Zenodo
Year: 2019

description: Presentation of the paper at the 6th EuHEA PhD Student-Supervisor and Early Career Researcher Conference (4-6 September 2019, Porto, Portugal)
International survey of mine reclamation and funding
Creators: name: Champigny, Normand, 1958-
Publisher: name: The University of British Columbia
Year: 2009

description: In 1990, The Coopers & Lybrand Consulting Group at the request of the Mining Association of Canada carried out a survey of reclamation regulations in selected countries and jurisdictions outside Canada. This initial study was later supplemented by data from Canadian provincial jurisdictions. This paper presents a summary of the findings of these studies and comparisons between the various jurisdictions. There has been a progression in various Mining Acts from legislation covering the safety aspects of mining and health to much more complex environmental concerns ranging from disturbance of flora and fauna to the ultimate reclamation of the areas affected by mining. Identification of and compliance with reclamation regulations, the funding of reclamation activities, and the responsibility of operator beyond the abandonment of the property are issues which are becoming of increasing concern to mine developers and operators
Palliduphantes insignis
Creators: name: Tanasevitch, Andrei V.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Palliduphantes
Palliduphantes insignis

description: Palliduphantes insignis (O. P.-Cambridge, 1913)
 MATERIAL: 1 Ƌ, Greece, Euboea, route Vasilika - Istiea, near Pefki, Pinus sp. grove, 1. V.1987, leg. B. Hauser [Ir-87/36]. – 1 ♀, Naupactus, 14.IV.1979, leg. S. Vit. – 1 Ƌ, 1 ♀, Peloponnese, near Patras, under stones, 31.III.1978, leg. S. Vit [25]. – 1 ♀, Phthiotis, Malesina, 20.VII.1968, leg. A. Senglet [6831].
REMARKS: This species is here reported for the first time for the Greek fauna.
RANGE: European.
description: Published as part of Tanasevitch, Andrei V., 2011, On linyphiid spiders (Araneae) from the Eastern and Central Mediterranean kept at the Muséum d'histoire naturelle, Geneva, pp. 49-91 in Revue suisse de Zoologie 118 (1) on page 77, DOI: 10.5962/bhl.part.117799, http://zenodo.org/record/6311696
Quantum chaos challenges many-body localization
Creators: name: Šuntajs, J.
name: Bonča, J.
name: Prosen, T.
name: Vidmar, L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Characterizing states of matter through the lens of their ergodic properties is a fascinating new direction of research. In the quantum realm, the many-body localization (MBL) was proposed to be the paradigmatic ergodicity breaking phenomenon, which extends the concept of Anderson localization to interacting systems. At the same time, random matrix theory has established a powerful framework for characterizing the onset of quantum chaos and ergodicity (or the absence thereof) in quantum many-body systems. Here we numerically study the spectral statistics of disordered interacting spin chains, which represent prototype models expected to exhibit MBL. We study the ergodicity indicator $g=\log_{10}(t_{\rm H}/t_{\rm Th})$, which is defined through the ratio of two characteristic many-body time scales, the Thouless time $t_{\rm Th}$ and the Heisenberg time $t_{\rm H}$, and hence resembles the logarithm of the dimensionless conductance introduced in the context of Anderson localization. We argue that the ergodicity breaking transition in interacting spin chains occurs when both time scales are of the same order, $t_{\rm Th} \approx t_{\rm H}$, and $g$ becomes a system-size independent constant. Hence, the ergodicity breaking transition in many-body systems carries certain analogies with the Anderson localization transition. Intriguingly, using a Berezinskii-Kosterlitz-Thouless correlation length we observe a scaling solution of $g$ across the transition, which allows for detection of the crossing point in finite systems. We discuss the observation that scaled results in finite systems by increasing the system size exhibit a flow towards the quantum chaotic regime.
Hegel on Social Critique. Life, Action and the Good in Hegel’s Philosophy of Right.
Creators: Heisenberg, Lars Thimo Immanuel
Publisher: name: Columbia University
Year: 2019
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Social role
subject: Responsibility

description: This dissertation defends a Hegelian model of our relationship to social roles. This model functions both as a new interpretation of Hegel’s own view, and as a contribution to the contemporary debate about role obligations. On this model, it is constitutive of our agency, and therefore obligatory, to carry out our social roles. Yet, ‘carrying out’ our roles also necessarily involves that we persistently develop our roles, and the social order of which they are part, towards realizing the human good. In that process, we are required to lead society through a process of social evolution, whose basic structure mirrors the development of natural life at a higher, self-conscious level. From the standpoint of Hegel scholarship, the main upshot of my interpretation is that Hegel’s vision of social participation does not only leave room for social critique, as commentators have recently argued, but rather centrally requires such critique. In fact, I argue that Hegel has – what I will call – a Neo-Aristotelian model of social critique (centered around the idea of ‘living unity’) that is an essential component of his account of how we should relate to social roles, but that has been hitherto overlooked. From the standpoint of the contemporary debate on role obligations, the main upshot of my interpretation is that Hegel offers an account that neither limits the normativity of social roles to those roles we have actually accepted, nor to the roles that are reflectively acceptable. Instead, Hegel develops an account on which even reflectively unacceptable roles give us obligations – namely obligations to evolve them, through a process of social experimentation, into something better. It is this view – and the central function that it attributes to social evolution as part of our role obligations – that make Hegel an interesting, but often overlooked, contributor to the debate about role obligations today.
Situación del Crowdfunding como mecanismo para la financiación de PyMEs en Colombia
Creators: name: Ramirez, Diego Alejandro
Publisher: name: figshare
Year: 2019
Subjects: subject: 150101 Accounting Theory and Standards
subject: FOS: Economics and business

description: Esta investigación analiza la situación del crowdfunding.en Colombia, modalidad que tiene como objeto elfinanciamiento de proyectos e ideas, se utiliza laInternet para tal fin, hay cuatro modalidades: donación,recompensa, préstamo e inversión, se requiere contarUna norma para las dos últimas, ya que en virtud.de la ley vigente en el país.
Record-smashing heatwaves are hitting Antarctica and the Arctic simultaneously. Here’s what’s driving them, and how they’ll impact wildlife
Creators: name: Bergstrom, Dana
name: Robinson, Sharon
name: Alexander, Simon
Publisher: name: University of Wollongong
Year: 2025

description: Record-breaking heatwaves hit both Antarctica and the Arctic simultaneously this week, with temperatures reaching 47℃ and 30℃ higher than normal. Heatwaves are bizarre at any time in Antarctica, but particularly now at the equinox as Antarctica is about to descend into winter darkness. Likewise, up north, the Arctic is just emerging from winter. Are these two heatwaves linked? We don’t know yet, and it’s most likely a coincidence. But we do know weather systems in Antarctica and the Arctic are connected to regions nearest to them, and these connections sometimes reach all the way to the tropics. And is climate change the cause? It might be. While it’s too soon to say for sure, we do know climate change is making polar heatwaves more common and severe, and the poles are warming faster than the global average. So let’s take a closer look at what’s driving the extreme anomalies for each region, and the flow-on effects for polar wildlife like penguins and polar bears.
Resource theories of multi-time processes: A window into quantum non-Markovianity
Creators: name: Berk, Graeme D.
name: Garner, Andrew J. P.
name: Yadin, Benjamin
name: Modi, Kavan
name: Pollock, Felix A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the conditions under which an uncontrollable background processes may be harnessed by an agent to perform a task that would otherwise be impossible within their operational framework. This situation can be understood from the perspective of resource theory: rather than harnessing 'useful' quantum states to perform tasks, we propose a resource theory of quantum processes across multiple points in time. Uncontrollable background processes fulfil the role of resources, and a new set of objects called superprocesses, corresponding to operationally implementable control of the system undergoing the process, constitute the transformations between them. After formally introducing a framework for deriving resource theories of multi-time processes, we present a hierarchy of examples induced by restricting quantum or classical communication within the superprocess - corresponding to a client-server scenario. The resulting nine resource theories have different notions of quantum or classical memory as the determinant of their utility. Furthermore, one of these theories has a strict correspondence between non-useful processes and those that are Markovian and, therefore, could be said to be a true 'quantum resource theory of non-Markovianity'.
description: 35 pages, 8 figures, 3 tables
Palliduphantes khobarum
Creators: name: Tanasevitch, Andrei V.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Palliduphantes
Palliduphantes khobarum

description: Palliduphantes khobarum (Charitonov, 1947)
MATERIAL: 1 ♀, Turkey, Anatolia, Irmasan Geçidi, Akseki, Cevizli, 100 km S of Beyş ehir, 1500 m a.s.l., 8. V.1978, leg. C. Besuchet & I. Löbl [32].
REMARKS: This species is here reported for the first time for the Turkish fauna.
RANGE: East Mediterranean.
description: Published as part of Tanasevitch, Andrei V., 2011, On linyphiid spiders (Araneae) from the Eastern and Central Mediterranean kept at the Muséum d'histoire naturelle, Geneva, pp. 49-91 in Revue suisse de Zoologie 118 (1) on page 77, DOI: 10.5962/bhl.part.117799, http://zenodo.org/record/6311696
A New Model for Pricing Collateralized OTC Derivatives
Creators: name: Xiao, Tim
Publisher: name: figshare
Year: 2020
Subjects: subject: 140302 Econometric and Statistical Methods
subject: FOS: Economics and business
subject: Economics
subject: 140207 Financial Economics
subject: 140103 Mathematical Economics

description: This paper presents a new model for pricing OTC derivatives subject to collateralization. It allows for collateral posting adhering to bankruptcy laws. As such, the model can back out the market price of a collateralized contract. This framework is very useful for valuing outstanding derivatives. Using a unique dataset, we find empirical evidence that credit risk alone is not overly important in determining credit-related spreads. Only accounting for both collateral arrangement and credit risk can sufficiently explain unsecured credit costs. This finding suggests that failure to properly account for collateralization may result in significant mispricing of derivatives. We also empirically gauge the impact of collateral agreements on risk measurements. Our findings indicate that there are important interactions between market and credit risk.
On Low-Dimensional Locally Compact Quantum Groups
Creators: name: Vaes, Stefaan
name: Vainerman, Leonid
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Algebra (math.QA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: Continuing our research on extensions of locally compact quantum groups, we give a classification of all cocycle matched pairs of Lie algebras in small dimensions and prove that all of them can be exponentiated to cocycle matched pairs of Lie groups. Hence, all of them give rise to locally compact quantum groups by the cocycle bicrossed product construction. We also clarify the notion of an extension of locally compact quantum groups by relating it to the concept of a closed normal quantum subgroup and the quotient construction. Finally, we describe the infinitesimal objects of locally compact quantum quantum groups with 2 and 3 generators - Hopf *-algebras and Lie bialgebras.
description: 64 pages, LaTeX, needs class-file irmadegm.cls. To appear in Locally Compact Quantum Groups and Groupoids. Proceedings of the Meeting of Theoretical Physicists and Mathematicians, Strasbourg, February 21 - 23, 2002
Barreras legales para la introducción del Crowdfunding en Colombia: análisis comparativo con España
Creators: name: Ramirez, Diego Alejandro
Publisher: name: figshare
Year: 2019
Subjects: subject: 150101 Accounting Theory and Standards
subject: FOS: Economics and business

description: El artículo en primera medida describe el crowdfunding y sus diversas clasificaciones, las fianzas en su uso y su potencial para impulsar nuevas ideas de negocio. En segunda medida, analiza la situación legal de esta modalidad en Colombia, comparando su legislación con España, país que presenta un desarrollo más avanzado de esta fuente de financiación.
Palliduphantes longiseta
Creators: name: Tanasevitch, Andrei V.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Palliduphantes
Palliduphantes longiseta

description: Palliduphantes longiseta (Simon, 1884)
 MATERIAL: 2 ♀, Italy, Tuscany, Mt Argentario, Maremma, 280-400 m a.s.l., sifting litter under Quercus ilex & Q. suber, 13.-14.II.1980, leg. A. Focarile. – 1 ♀, same locality, 400 m a.s.l., sifting litter and under stones under Quercus ilex & Arbutus unedo, 14.II.1980, leg. A. Focarile.
REMARKS: This species is known from Italy only.
description: Published as part of Tanasevitch, Andrei V., 2011, On linyphiid spiders (Araneae) from the Eastern and Central Mediterranean kept at the Muséum d'histoire naturelle, Geneva, pp. 49-91 in Revue suisse de Zoologie 118 (1) on page 77, DOI: 10.5962/bhl.part.117799, http://zenodo.org/record/6311696
Endoscopy for Hecke categories, character sheaves and representations
Creators: name: Lusztig, George
name: Yun, Zhiwei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20G40, 14F05, 14F43, 20C08, 20C33

description: For a split reductive group $G$ over a finite field, we show that the neutral block of its mixed Hecke category with a fixed monodromy under the torus action is monoidally equivalent to the mixed Hecke category of the corresponding endoscopic group $H$ with trivial monodromy. We also extend this equivalence to all blocks. We give two applications. One is a relationship between character sheaves on $G$ with a fixed semisimple parameter and unipotent character sheaves on the endoscopic group $H$, after passing to asymptotic versions. The other is a similar relationship between representations of $G(\mathbb{F}_q)$ with a fixed semisimple parameter and unipotent representations of $H(\mathbb{F}_{q})$.
description: This is a revised version of the paper with the same title published in Forum Math. Pi 8 (2020), e12. An error on a 3-cocycle is corrected and main statements are simplified. A Corrigendum follows the main article. 57 pages
Help Seeking Patterns of Black Women in Selected Black Churches
Creators: Peterman, Phylis J.
Publisher: name: Columbia University
Year: 1990
Subjects: Social service
Blacks
Women's studies

description: This study explores help seeking patterns of Black women in Black churches. The intent of the study, is to examine use of a historically vital component of the Black community and to ascertain its role in the support system of a population. The theory of shared functions is used to look at the utilization of different support systems, and to understand the role of the church as a bureaucratic institution with primary characteristics and functions.

The data was collected over a six month period, at six Black churches in the Essex County area of New Jersey. The information is derived from a questionnaire administered to 196 women. In the analysis of the data, participants are grouped by socioeconomic status and size of church they attend. The hypotheses are: (1) The lower the socioeconomic status of the church member, the more likely the minister will be selected for help. (2) members of smaller churches are more likely to select the minister as a vehicle for help, than those in larger churches. (3) The minister is more likely to be selected for help with concerns classified as non-uniform. (4) The more active a woman is in church life, the more likely she is to choose the minister as a help source.

The findings confirm, women classified as low income and those active in church life, utilize their pastor more than other women in the study. The findings do not confirm, hypothesis 2 and 3, but show that women from large churches utilize the minister more than women in smaller churches and that the minister is selected as a help source in a range of concerns. The data highlights, that women see the minister as the primary source for help and that for many, the pastor is as important, as the relative or professional counselor in seeking assistance.

The implications of this study suggest the profession of social work, seek avenues of collaboration with local ministers to offer support and information on the concerns members bring. The findings also suggest the profession find ways to accurately access client's church involvement and support from the religious community.
The European Strategy and Detector R&D Program
Creators: name: Bergauer, Thomas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The latest update of the European Strategy for Particle Physics stimulated the preparation of the European Detector Roadmap document in 2021 by the European Committee for Future Accelerators ECFA. This roadmap, defined during a bottom-up process by the community, outlines nine technology domains for HEP instrumentation and pinpoints urgent R&D topics, known as Detector R&D Themes (DRDTs). Task forces were set for each domain, leading to Detector R&D Collaborations (DRDs), now hosted at CERN. After an intensive period over the last months, seven DRD collaborations have been established, which are now starting to set up their collaboration structures and begin to work. One is still in the preparation phase. In this publication, I will give an overview of the set-up process and the current status of all DRD collaborations covering detector developments in the field of gaseous detectors, noble liquid detectors for rare event searches, semiconductor detectors, photodetectors and concepts for particle ID, quantum sensors, calorimetry, electronics for HEP instrumentation and mechanical and integration aspects.
description: published in NIM A (Proceedings of the 16th Pisa Meeting on Advanced Detectors); invited talk at the conference
Helping Prospective Teachers to Understand Children's Mathematical Thinking
Creators: Hartman, Genevieve Louise
Publisher: name: Columbia University
Year: 2012
Subjects: Cognitive psychology
Mathematics--Study and teaching
Mathematics--Study and teaching (Preschool)
Teachers--Training of

description: The primary aim of this study was to investigate the effects of two video-based interventions, one guided, the other non-guided, on pre-service early childhood education teachers' understanding of students' mathematical thinking.  Five web-based lessons on various topics in children's mathematical development were created for this study.  Each contained a short reading introducing a videotaped clinical interview of a young child performing a mathematical task.  The unguided group then watched a 2-minute video, while the guided group watched the same video segmented into short clips and then answered open-ended questions at each break.  The main goal was to examine the effectiveness of the use of videotaped clinical interviews in professional development.  More specifically, I was interested in the types of experiences offered by the guided and unguided versions, as compared to those of the control group.  The results of this study showed that both the guided- and unguided-video experiences were successful in changing the way prospective teachers interpreted children's mathematical thinking.  While the results show it was possible to use videos to improve prospective teachers' interpretive abilities, it was not possible to improve their ability to apply the interpretations to developing appropriate teaching activities.
Geometric phase gates in dissipative quantum dynamics
Creators: name: Müller, Kai
name: Luoma, Kimmo
name: Strunz, Walter T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Trapped ions are among the most promising candidates for performing quantum information processing tasks. Recently, it was demonstrated how the properties of geometric phases can be used to implement an entangling two qubit phase gate with significantly reduced operation time while having a built-in resistance against certain types of errors (Palmero et. al., Phys. Rev. A 95, 022328 (2017)). In this article, we investigate the influence of both quantum and thermal fluctuations on the geometric phase in the Markov regime. We show that additional environmentally induced phases as well as a loss of coherence result from the non-unitary evolution, even at zero temperature. We connect these effects to the associated dynamical and geometrical phases. This suggests a strategy to compensate the detrimental environmental influences and restore some of the properties of the ideal implementation. Our main result is a strategy for zero temperature to construct forces for the geometric phase gate which compensate the dissipative effects and leave the produced phase as well as the final motional state identical to the isolated case. We show that the same strategy helps also at finite temperatures. Furthermore, we examine the effects of dissipation on the fidelity and the robustness of a two qubit phase gate against certain error types.
description: 14 pages, 6 figures. Comments are welcome!
Palliduphantes melitensis Bosmans 1994
Creators: name: Tanasevitch, Andrei V.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Palliduphantes
Palliduphantes melitensis

description: Palliduphantes melitensis Bosmans, 1994
MATERIAL: 1 Ƌ, Malta, Gozo Isl., Dwejra Point, under stones, 8. V.1974, leg. V. Mahnert.
REMARKS: This species is known from Malta only.
description: Published as part of Tanasevitch, Andrei V., 2011, On linyphiid spiders (Araneae) from the Eastern and Central Mediterranean kept at the Muséum d'histoire naturelle, Geneva, pp. 49-91 in Revue suisse de Zoologie 118 (1) on page 77, DOI: 10.5962/bhl.part.117799, http://zenodo.org/record/6311696
Supplementary Material
Creators: name: Savoia, Edoardo
name: Oyarzua, Elton
name: Todd, Billy
name: Sadus, Richard
Publisher: name: AIP Publishing
Year: 2025
Subjects: classificationCode: 51
subject: Physical sciences
subject: FOS: Physical sciences

description: This file contains: (1) Details of the Simulations, (2) Low-frequency contributions to the heat capacity quantum corrections, (3) Incorrect prediction of the heat capacity with experimental ideal gas contributions and (4) Numerical data of heat capacities and quantum corrections.
Convergent Normal Forms of Symmetric Dynamical Systems
Creators: name: Cicogna, G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: It is shown that the presence of Lie-point-symmetries of (non-Hamiltonian) dynamical systems can ensure the convergence of the coordinate transformations which take the dynamical sytem (or vector field) into Poincaré-Dulac normal form.
description: 11 pag., Plain TeX
Pocadicnemis pumila
Creators: name: Tanasevitch, Andrei V.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Pocadicnemis
Pocadicnemis pumila

description: Pocadicnemis pumila (Blackwall, 1841)
MATERIAL: 2 ♀, Turkey, Artvin, Cankurtaran Geçidi, between Borçka and Hopa, 700 m a.s.l., under stones, 8. VI.1986, leg. C. Besuchet, I. Löbl & D. Burckhardt [7a].
REMARKS: This species is here reported for the first time for the Turkish fauna.
RANGE: Holarctic.
description: Published as part of Tanasevitch, Andrei V., 2011, On linyphiid spiders (Araneae) from the Eastern and Central Mediterranean kept at the Muséum d'histoire naturelle, Geneva, pp. 49-91 in Revue suisse de Zoologie 118 (1) on page 77, DOI: 10.5962/bhl.part.117799, http://zenodo.org/record/6311696
Linear stability in billiards with potential
Creators: name: Dullin, Holger R.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A general formula for the linearized Poincaré map of a billiard with a potential is derived. The stability of periodic orbits is given by the trace of a product of matrices describing the piecewise free motion between reflections and the contributions from the reflections alone. For the case without potential this gives well known formulas. Four billiards with potentials for which the free motion is integrable are treated as examples: The linear gravitational potential, the constant magnetic field, the harmonic potential, and a billiard in a rotating frame of reference, imitating the restricted three body problem. The linear stability of periodic orbits with period one and two is analyzed with the help of stability diagrams, showing the essential parameter dependence of the residue of the periodic orbits for these examples.
description: 22 pages, LaTex, 4 Figures
Multifaceted phase ordering kinetics of an antiferromagnetic spin-1 condensate
Creators: name: Pietraszewicz, Joanna
name: Seweryn, Aleksandra
name: Witkowska, Emilia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study phase domain coarsening in the long time limit after a quench of magnetic field in a quasi one-dimensional spin-1 antiferromagnetic condensate. We observe that the growth of correlation length obeys scaling laws predicted by the two different models of phase ordering kinetics, namely the binary mixture and vector field. We derive regimes of clear realization for both of them. We demonstrate appearance of atypical scaling laws, which emerge in intermediate regions.
Helping Troubled Employees: An Analysis of Selected Employee Assistance Programs Under Management Auspices
Creators: Straussner, Shulamith Lala Ashenberg
Publisher: name: Columbia University
Year: 1986
Subjects: Social service

description: This dissertation aims to expand present state of knowledge regarding employee assistance programs (EAPs). The first phase of study consisted of identification of the universe of EAPs operational by June, 1982 in the New York City Metropolitan Area utilizing a typology comprised of program auspice (management or union); program sponsorship (individual or consortium); program model (in-house or contractual); and sector (public or private) of the company with EAP.

A total of 125 EAPs were found in an area with over five and one-half million employees. Thus, despite their growth, EAPs are available to only a miniscule portion of the workforce.

The second phase of study analyzed 23 private sector EAPs under management auspices selected on the basis of non-probability quota sampling technique stratified according to program model (in house or contractual), type of industry (finance/insurance; manufacturing; or service), and size of company (small; medium; large). Sixty seven respondents were interviewed utilizing structured and open-ended instrument examining over 200 variables.

The study examined the current nature of these EAPs; ascertained the changes they experienced since inception; examined characteristics of program users; explored similarities and differences between in-house and contractual EAPs; examined their linkages with community; and explored the roles and perceived value of social workers in these programs.

Data analysis revealed an increasing standardization with broad brush EAPs staffed by professional counselors becoming the norm. Comparative analysis of in-house and contractual EAPs found that in-house programs tend to reach employees with alcohol problems, males and minority workers. In contrast, contracted-out EAPs are used more by women, higher level white workers, and those with mental health and family problems--population resembling traditional users of community mental health and family agencies.

Overall, the EAPs were utilized by 4.4% of workforce, at an average cost of $14.7 per eligible employee per year. They tended to maintain an unilateral linkage with community based agencies and referred out a high proportion of employees.

Implications of these findings to program development, social policy and social work progression are discussed.
Additional file 1: of Efficacy of three-dimensionally integrated exercise for scoliosis in patients with adolescent idiopathic scoliosis: study protocol for a randomized controlled trial
Creators: name: Liang, Juping
name: Zhou, Xuan
name: Chen, Nan
name: Li, Xin
name: Yu, Hong
name: Yang, Yuqi
name: Song, Yuanyuan
name: Du, Qing
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Developmental Biology
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: World Health Organization Trial Registration Data Set. (PDF 152kb)
BROYLER JOʻJALARIGA XITOZAN VA SUT ZARDOBI KUKUNINING TA'SIRINI OʻRGANISH
Creators: name: Raxmonov F.X.- Zarmed universiteti. Oʻzbekiston, Samarqand.
name: Eshimov D. , Islomov X.I. - Samarqand davlat veterinariya meditsina, chorvachilik va biotexnologiyalar universiteti. Oʻzbekiston, Samarqand
Publisher: name: Zenodo
Year: 2025

description: Respublikamiz aholisining ozuqa mahsulotlariga boʻlganehtiyojlarini yanada yaxshiroq qondirish Respublikamiz Prezidentining qatorfarmonlari va Vazirlar Mahkamasining qarorlarida katta iqtisodiy hamda siyosiymasala deb belgilangan. Prezidentimizning “2016-2020 yillarda qishloq xoʻjaliginiyanada isloh qilish va rivojlantirish chora tadbirlari toʻgʻrisida”gi PQ 2460-sonliqarori va shu qaror ijrosi yuzasidan qabul qilingan chora – tadbirlar dasturiningijrosini ta’minlash barcha soha mutasaddilari, shuningdek chorvachilik vaparrandachilik tarmoqlarida faoliyat koʻrsatuvchi mutaxassislarning zimmasiga hammuhim vazifani yuklaydi. Hozirgi davrda Respublikamizda parrandachilikniningjoʻjachilik yoʻnalishini rivojlantirishga katta e’tibor berib kelinmoqda
TASVIRIY SANʼAT TAʼLIMIDA MUSTAQIL ISHLASH FAOLIYATINI TASHKIL ETISHNING O'ZIGA XOS JIHATLARI.
Creators: name: Bazarova, Feruza
Publisher: name: Zenodo
Year: 2025

description: Mazkur maqolada tasviriy sanʼat taʼlimi jarayonida mustaqil ishlash faoliyatini tashkil etishning pedagogik va metodik asoslari, uning o‘quvchilarning ijodiy qobiliyati va estetik dunyoqarashini rivojlantirishdagi ahamiyati, hamda mazkur jarayonni samarali yo‘lga qo‘yishdagi uslubiy yondashuvlar tahlil etilgan.
Integral identities and bounds for scattering calculations in the Dirac formalism
Creators: name: Darewych, Jurij
Publisher: name: arXiv
Year: 1998
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Mathematical Physics (math-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Integral identities that hold between ``desired'' and ``comparison'' solutions of the radial Dirac equations for scattering precesses are considered. Applications of these identities are discussed, particularly the determination of bounds to variational calculations of $K$-matrix elements.
description: 10 pages, TeX, no figures
Hepatocyte Notch in non-alcoholic steatohepatitis (NASH)-associated liver fibrosis and cancer
Creators: Zhu, Changyu
Publisher: name: Columbia University
Year: 2019
Subjects: Biology
Medicine
Liver--Diseases
Notch proteins
Liver--Fibrosis

description: Non-alcoholic steatohepatitis (NASH) is a chronic liver disease associated with the worldwide spread of obesity. NASH predisposes development of fibrosis and hepatocellular carcinoma (HCC), but has no approved therapy due to incomplete understanding of the pathogenesis. Notch signaling normally specifies cell fate during development, but here we investigate how this pathway becomes dysregulated in NASH and contributes to fibrosis and cancer. In the first study, we show that hepatocyte Notch activity tracks with disease severity and treatment response in NASH patients, and is similarly increased in a mouse model of diet-induced NASH and liver fibrosis. Different genetic models demonstrate causatively that hepatocyte Notch induces liver fibrosis via secretion of the fibrogenic factor Osteopontin that activates hepatic stellate cells (HSCs), while pharmacologic inhibition of hepatocyte Notch could ameliorate NASH-associated fibrosis. In the second study, we research how hepatocyte Notch activation leads to HCC in mice on NASH diet. Transcriptomic analysis reveals nerve growth factor (NGF) as a Notch target gene in hepatocytes, and the abundance of hepatocyte NGF precursor protein (proNGF) is uniquely associated with HCC. We provide evidence that proNGF may facilitate HCC growth and expansion in a non-cell autonomous manner by inducing HSC deactivation and fibrosis remodeling. In summary, hepatocyte Notch maladaptively contributes to fibrogenesis and possibly HCC expansion by directly signaling to HSCs at different stages of NASH progression, and could be an accessible target for treatment of NASH-associated liver pathologies.
Prinerigone vagans
Creators: name: Tanasevitch, Andrei V.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Prinerigone
Prinerigone vagans

description: Prinerigone vagans (Audouin, 1826)
 MATERIAL: 1 Ƌ, Greece, Epirus, between Salaora and Arta, bank of lagoon, 28.III.1978, leg. S. Vit [19]. – 1 Ƌ, Cyprus, Paphos District, Mamonia, bank of Dhiarisos, sifting litter under Tamarix, 14.VII.1977, leg. S. Vit [c/26].
REMARKS: This species is here reported for the first time for the Cypriot fauna.
RANGE: Southern Palaearctic, Afrotropical, Oriental, Pacific.
description: Published as part of Tanasevitch, Andrei V., 2011, On linyphiid spiders (Araneae) from the Eastern and Central Mediterranean kept at the Muséum d'histoire naturelle, Geneva, pp. 49-91 in Revue suisse de Zoologie 118 (1) on pages 77-78, DOI: 10.5962/bhl.part.117799, http://zenodo.org/record/6311696
Herramienta “Gerencia del Valor” para el diagnóstico financiero en las Empresas Sociales del Estado
Creators: name: Ramirez, Diego Alejandro
Publisher: name: figshare
Year: 2019
Subjects: subject: 150101 Accounting Theory and Standards
subject: FOS: Economics and business

description: La importancia de las empresas del Estado radica en el carácter social que cumple en la sociedad; la atención en la salud presenta muchos problemas y requiere ser mejor administrada, se propone aplicar herramientas como la "Gerencia del Valor", la cual se basa en el cálculo de los indicadores orientados a crear valor, lo que ayuda a un mejor desempeño. Igualmente, los conceptos modernos como la "Nueva Gestión Pública", la ayuda a los países a superar los sistemas burocráticos de antaño, en la búsqueda de una mejor eficiencia y eficacia en la prestación de servicios y el manejo adecuado de los recursos públicos.
The relationship between reclamation and sustainable economic development
Creators: name: Powter, C. B. (Christopher Barrett)
name: Chymko, N. R.
Publisher: name: The University of British Columbia
Year: 2009

description: Sustainable economic development is defined as development which ensures that the utilization of resources and the environment today does not damage prospects for their use by future generations. It is relatively easy to see how this concept can be applied to renewable resources; it is more difficult to understand how it can be applied to a "drastic" disturbance, such as a surface mine, where the resource is permanently removed. One mechanism for achieving this is reclamation. This paper will define sustainable economic development in the context of non-renewable resources and examine the changing nature of reclamation over time. A review of the Alberta Government's approach to reclamation will show how we tie reclamation and sustainable economic development together. Finally I will also challenge reclamationists to promote their wares to the public.
Optimally defined Racah-Casimir operators for su(n) and their eigenvalues for various classes of representations
Creators: name: de Azcarraga, J. A.
name: Macfarlane, A. J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper deals with the striking fact that there is an essentially canonical path from the $i$-th Lie algebra cohomology cocycle, $i=1,2,... l$, of a simple compact Lie algebra $\g$ of rank $l$ to the definition of its primitive Casimir operators $C^{(i)}$ of order $m_i$. Thus one obtains a complete set of Racah-Casimir operators $C^{(i)}$ for each $\g$ and nothing else. The paper then goes on to develop a general formula for the eigenvalue $c^{(i)}$ of each $C^{(i)}$ valid for any representation of $\g$, and thereby to relate $c^{(i)}$ to a suitably defined generalised Dynkin index. The form of the formula for $c^{(i)}$ for $su(n)$ is known sufficiently explicitly to make clear some interesting and important features. For the purposes of illustration, detailed results are displayed for some classes of representation of $su(n)$, including all the fundamental ones and the adjoint representation.
description: Latex, 16 pages
Heritage Reproduction in the Age of High-Resolution Scanning:A Critical Evaluation of Digital Infilling Methods for Historic Preservation
Creators: Jauregui, Andre
Publisher: name: Columbia University
Year: 2018
Subjects: Historic preservation
Scanning systems
Cultural property
Documentation

description: High-definition digital scanning has established itself as a useful tool for documenting cultural heritage in the twenty-first century. Proponents of surveying technology are hailing the use of digital fact-based 3D models as valuable tools for recording, analyzing and safeguarding items of cultural importance. Methods for digitally filling holes have not yet been considered through the lens of historic preservation. No modeling technique is error-free and understanding how heritage professionals are addressing lacunae is vital for understanding digital heritage objects resulting from 3D scanning hardware. Frameworks exist for working with scanned data, but they define general principles for a broad range of applications and do not provide any guidelines or strategies of how to comply with them practically. This thesis is a comparative evaluation of current practices of in-filling digital lacunae that attempts to establish which methods are best suited to the following historic preservation practices: documentation, Interpretation graphics, Long-term monitoring, digital restoration, physical fabrication.