cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electronic structure of GdN, and the influence of exact exchange
Creators: name: Doll, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: GdN bulk is studied with the local density approximation, on the Hartree-Fock level, and on the level of the hybrid functional B3LYP. A local basis set formalism is used, as implemented in the present CRYSTAL06 release. It is demonstrated that the code is technically capable of treating this system with its 4f electrons explicitly, i.e. out of the core. The band structure at the level of the local density approximation is in good agreement with earlier calculations and is found to be half-metallic. The Hartree-Fock band structure is insulating with a large gap. Interestingly, three solutions were found at the B3LYP level. The lowest of them is insulating for majority spin, and the Fermi surface for minority spin consists only of points, resulting in a very low density of states around the Fermi level.
description: to appear in J. Phys.: Condensed Matter
Transmission of matter wave solitons through nonlinear traps and barriers
Creators: name: Garnier, Josselin
name: Abdullaev, Fatkhulla
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The transmissions of matter wave solitons through linear and nonlinear inhomogeneities induced by the spatial variations of the trap and the scattering length in Bose-Einstein condensates are investigated. New phenomena, such as the enhanced transmission of a soliton through a linear trap by a modulation of the scattering length, are exhibited. The theory is based on the perturbed Inverse Scattering Transform for solitons, and we show that radiation effects are important. Numerical simulations of the Gross-Pitaevskii equation confirm the theoretical predictions.
description: 6 pages, 4 figures
Collective Knowledge: organizing research projects as a database of reusable components and portable workflows with common APIs
Creators: name: Fursin, Grigori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This article provides the motivation and overview of the Collective Knowledge framework (CK or cKnowledge). The CK concept is to decompose research projects into reusable components that encapsulate research artifacts and provide unified application programming interfaces (APIs), command-line interfaces (CLIs), meta descriptions and common automation actions for related artifacts. The CK framework is used to organize and manage research projects as a database of such components. Inspired by the USB "plug and play" approach for hardware, CK also helps to assemble portable workflows that can automatically plug in compatible components from different users and vendors (models, datasets, frameworks, compilers, tools). Such workflows can build and run algorithms on different platforms and environments in a unified way using the universal CK program pipeline with software detection plugins and the automatic installation of missing packages. This article presents a number of industrial projects in which the modular CK approach was successfully validated in order to automate benchmarking, auto-tuning and co-design of efficient software and hardware for machine learning (ML) and artificial intelligence (AI) in terms of speed, accuracy, energy, size and various costs. The CK framework also helped to automate the artifact evaluation process at several computer science conferences as well as to make it easier to reproduce, compare and reuse research techniques from published papers, deploy them in production, and automatically adapt them to continuously changing datasets, models and systems. The long-term goal is to accelerate innovation by connecting researchers and practitioners to share and reuse all their knowledge, best practices, artifacts, workflows and experimental results in a common, portable and reproducible format at https://cKnowledge.io .
description: Accepted for Philosophical Transactions of the Royal Society. arXiv admin note: text overlap with arXiv:2006.07161
Dopamine depletion alters neuroplasticity-related signaling in the rat hippocampus
Creators: name: Kim, Bohye
name: Kim, Joong-Sun
name: Youn, BuHyun
name: Moon, Changjong
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Dopamine (DA) plays a significant role in regulating hippocampal function, particularly in modulating synaptic plasticity. Despite this, a comprehensive understanding of the molecular mechanisms involved in neuroplasticity-related signaling influenced by DA remains incomplete. This study aimed to elucidate the changes in the expression of key molecules related to hippocampal neuroplasticity following DA depletion in rats. To induce DA depletion, unilateral striatal infusions of 6-hydroxydopamine (6-OHDA) were administered to adult Sprague-Dawley rats. The subsequent loss of nigrostriatal DAergic signaling in these 6-OHDA-lesioned rats was confirmed using an apomorphine-induced rotation test at 4 weeks post-infusion and by assessing the expression levels of tyrosine hydroxylase (TH) through immunohistochemistry and western blotting at 7 weeks post-infusion. A decrease in DAergic signaling, evidenced by reduced TH-positive immunoreactivity, was also noted in the ipsilateral hippocampus of the lesioned rats. Interestingly, 6-OHDA infusion led to increased phosphorylation of pivotal hippocampal plasticity-related proteins, including extracellular signal-regulated kinase (ERK), protein kinase B (Akt), glycogen synthase kinase 3β (GSK3β), and cAMP response element-binding protein (CREB), in the ipsilateral hippocampus 7 weeks following the infusion. To extend these findings, in vitro experiments were conducted on primary hippocampal neurons exposed to DA and/or the active D1/D2 DA receptor antagonist, flupentixol (Flux). DA inhibited the constitutive phosphorylation of ERK, Akt, GSK3, and CREB, while Flux restored these phosphorylation levels. Taken together, these findings indicate that DA depletion triggers an increase in plasticity-related signaling in the hippocampus, suggesting a possible compensatory mechanism that promotes activity-independent neuroplasticity following DA depletion.
Elliptic solutions of dynamical Lucas sequences
Creators: name: Schlosser, Michael J.
name: Yoo, Meesue
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 05A30 (Primary) 05E15, 11B39, 39A13, 39A23 (Secondary)

description: We study two types of dynamical extensions of Lucas sequences and give elliptic solutions for them. The first type concerns a level-dependent (or discrete time-dependent) version involving commuting variables. We show that a nice solution for this system is given by elliptic numbers. The second type involves a non-commutative version of Lucas sequences which defines the non-commutative (or abstract) Fibonacci polynomials introduced by Johann Cigler. If the non-commuting variables are specialized to be elliptic-commuting variables the abstract Fibonacci polynomials become non-commutative elliptic Fibonacci polynomials. Some properties we derive for these include their explicit expansion in terms of normalized monomials and a non-commutative elliptic Euler--Cassini identity.
description: 16 pages; minor changes, Eq. (3.10) corrected; dedicated to Johann Cigler on the occasion of his 84th birthday
Quantum point contact with large localized spin: fractional quantization of the ballistic conductance
Creators: name: Shelykh, I. A.
name: Galkin, N. G.
name: Bagraev, N. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the conductance of the quantum point contact containing large localized spin J. The additional plateau is formed on a ballistic conductance staircase if only one propagating channel is rendered conducting. The conductance value at this plateau is shown to depend strongly on J and decrease from 3e^2/2h to e^2/h when J increases from 1/2 to infinity, which is in a good agreement with the experimental observations [D.J. Reilly, et al, Phys. Rev. B 63, 121311 (2001)].
description: 10 pages, 2 figures
Firm investment behaviour under a carbon emissions pricing scheme : a real options analysis of investment in low emissions electricity generation technologies in Australia
Creators: name: Lambie, Ross
Publisher: name: The Australian National University
Year: 2013
Subjects: subject: Real options (Finance)
subject: Renewable natural resources Economic aspects Australia
subject: Electric power production Economic aspects Australia
subject: Electric power production Environmental aspects Australia
subject: Investments

description: A general finding from the growing literature applying 'real options' theory to investment under carbon emission pricing schemes (CEPSs), is that the level of uncertainty in the expected price of carbon is a key factor in the extent to which a CEPS's design provides incentives for a firm to invest in lower carbon emissions technologies. Notwithstanding this finding, major public policy analyses of CEPSs have not utilised real options analysis to gain insights into the effect of a scheme's design on the likely investment behaviour of firms. This thesis argues that real options analysis should be included in the suite of tools for informing public policy on the design of a CEPS. This thesis contributes to understanding the features of a CEPS's design on the decision of a firm in an energy-intensive sector to invest in new lower-carbon emitting plant, when the investment decision lends itself to being characterised as a real option. In contrast to existing real options studies in this area, a simpler analytic approach is adopted based on a model by Cortazar et al. (1998). The approach captures output price and carbon price uncertainties and is solved using contingent claims analysis to find the critical price of output required to trigger the decision to invest. Two empirical applications examine in detail a representative electricity generator's decision to invest in a range of low carbon-emitting and non-carbon emitting electricity generation technologies. The analysis of both a hypothetical CEPS's design in general, and the post-2015 carbon emissions trading scheme under Australia's Clean Energy Future package (CEFETS) in particular, show that there are four effects on the threshold required by a generator to trigger investment in a technology that are attributable to the design of a scheme. In addition to the impact of volatility in the carbon price and its correlation with the output price (the volatility effect) highlighted in other real options studies, three additional investment threshold effects are found that may jointly impact on a firm's decision to invest in a particular technology depending on the design of a CEPS. The three effects consist of the cost effect, the negative cost effect and the subsidy effect. The cost effect arises from the level of the carbon price and impacts only carbon emitting technologies. The negative cost effect and subsidy effect arise from allocations of free carbon emissions rights under a CETS that directly subsidises either a plant's operating costs or investment cost, respectively, and may apply to all technologies.
Zachary O'Hagan: Focus in Caquinte
Creators: name: O'Hagan, Zachary
name: Beier, Christine
name: Dawson, Virginia
name: Hanks, William
name: Jenks, Peter
name: Michael, Lev
name: Mikkelsen, Line
name: Rolle, Nicholas
name: Skilton, Amalia Horan
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: cot

description: PhD candidate: O'Hagan; PhD dissertation committee: Michael (co-chair), Mikkelsen (co-chair), Hanks (external member). Other individuals labeled as participants asked questions. The defense was held on Zoom due to COVID-19. There is a single video file that includes the research presentation, questions from the committee, then questions from the audience. One .pdf file consists of slides of the research presentation.
Non-universality of transverse Coulomb exchange at small x
Creators: name: Aichelin, J.
name: Arleo, F.
name: Gossiaux, P. -B.
name: Gousset, T.
name: Peigne, S.
name: Thomas, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within an explicit scalar QED model we compare, at fixed x << 1, the leading-twist K_T-dependent `quark' distribution f_q(x, K_T) probed in deep inelastic scattering and Drell-Yan production, and show that the model is consistent with the universality of f_q(x, K_T). The extension of the model from the aligned-jet to the 'symmetric' kinematical regime reveals interesting properties of the physics of Coulomb rescatterings when comparing DIS and DY processes. At small x the transverse momentum induced by multiple scattering on a single centre is process dependent, as well as the transverse momentum broadening occurring in collisions on a finite size nuclear target.
description: 28 pages, 3 eps figures
COVID-19 what have we learned? The rise of social machines and connected devices in pandemic management following the concepts of predictive, preventive and personalised medicine
Creators: name: Radanliev, Petar
name: De Roure, David
name: Walton, Rob
name: Van Kleek, Max
name: Montalvo, Rafael Mantilla
name: Santos, Omar
name: Maddox, LaTreall
name: Cannady, Stacy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: A comprehensive bibliographic review with R statistical methods of the COVID pandemic in PubMed literature and Web of Science Core Collection, supported with Google Scholar search. In addition, a case study review of emerging new approaches in different regions, using medical literature, academic literature, news articles and other reliable data sources. Public responses of mistrust about privacy data misuse differ across countries, depending on the chosen public communication strategy.
Extremely Low Molecular Gas Content in the Vicinity of a Red Nugget Galaxy at $z=1.91$
Creators: name: Morishita, T.
name: D'Amato, Q.
name: Abramson, L. E.
name: Abdurro'uf
name: Stiavelli, M.
name: Lucas, R. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Atacama Large Millimeter/submillimeter Array (ALMA) Band 5 observations of a galaxy at $z=1.91$, GDS24569, in search of molecular gas in its vicinity via the [C I] $^3$P$_1$-$^3$P$_0$ line. GDS24569 is a massive ($\log M_*/M_\odot=11$) passively evolving galaxy, and characterized by compact morphology with an effective radius of $\sim0.5$ kpc. We apply two blind detection algorithms to the spectral data cubes, and find no promising detection in or around GDS24569 out to projected distance of $\sim320$ kpc, while a narrow tentative line ($4.1 σ$) is identified at $+1200$ km/s by one of the algorithms. From the non-detection of [C I], we place a $3σ$ upper limit on molecular hydrogen mass, $\sim 7.1 \times 10^9 M_\odot$, which converts to an extremely low gas-to-stellar mass fraction, $< 5 \%$. We conduct a spectral energy distribution modeling by including optical-to-far-infrared data, and find a considerably high ($\sim0.1\%$) dust-to-stellar mass ratio, $\sim10$-$100\times$ higher than those of local early-type galaxies. In combination with a previous result of an insufficient number of surrounding satellite galaxies, it is suggested that GDS24569 is unlikely to experience significant size evolution via satellite mergers. We discuss possible physical mechanisms that quenched GDS24569.
description: Accepted in ApJ
Accounting Principles are Simulated on Quantum Computers
Creators: name: Diep, Do Ngoc
name: Giang, Do Hoang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The paper is devoted to a new idea of simulation of accounting by quantum computing. We expose the actual accounting principles in a pure mathematics language. After that we simulated the accounting principles on quantum computers. We show that all arbitrary accounting actions are exhausted by the described basic actions. The main problem of accounting are reduced to some system of linear equations in the economic model of Leontief. In this simulation we use our constructed quantum Gauß-Jordan Elimination to solve the problem and the time of quantum computing is some square root order faster than the time in classical computing.
description: LaTeX 13 pp., no figure
Bootstrapping in convergence groups
Creators: name: Swenson, Eric L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20F32, 57N10

description: We prove a true bootstrapping result for convergence groups acting on a Peano continuum. We give an example of a Kleinian group H which is the amalgamation of two closed hyperbolic surface groups along a simple closed curve. The limit set Lambda H is the closure of a `tree of circles' (adjacent circles meeting in pairs of points). We alter the action of H on its limit set such that H no longer acts as a convergence group, but the stabilizers of the circles remain unchanged, as does the action of a circle stabilizer on said circle. This is done by first separating the circles and then gluing them together backwards.
description: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol5/agt-5-32.abs.html
Pathway from condensation via fragmentation to fermionization of cold bosonic systems
Creators: name: Alon, Ofir E.
name: Cederbaum, Lorenz S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: For small scattering lengths, cold bosonic atoms form a condensate the density profile of which is smooth. With increasing scattering length, the density {\it gradually} acquires more and more oscillations. Finally, the number of oscillations equals the number of bosons and the system becomes {\it fermionized}. On this pathway from condensation to fermionization intriguing phenomena occur, depending on the shape of the trap. These include macroscopic fragmentation and {\it coexistence} of condensed and fermionized parts that are separated in space.
description: 12 pages, 2 figures
Observations of Rapid Disk-Jet Interaction in GRS 1915+105
Creators: name: Rothstein, David M.
name: Eikenberry, Stephen S.
name: Matthews, Keith
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present evidence that ~ 30 minute episodes of jet formation in GRS 1915+105 may sometimes be a superposition of smaller, faster phenomena. Based on observations in 2002 July using the Rossi X-ray Timing Explorer and the Palomar 5 meter telescope, we show that GRS 1915+105 sometimes produces ~ 30 minute infrared flares that can entirely be explained as a combination of small (~ 150 second) flares, one for each oscillation in the accompanying X-ray light curve. We discuss the differences between these observations and similar ones in 1997 August and conclude that an X-ray "trigger spike" seen during each cycle in 1997 is a key ingredient for large ejections to occur on ~ 30 minute timescales in this source.
description: 6 pages, 3 figures; published in Proceedings of the 5th Microquasar Workshop (Beijing, June 2004); this paper is a shorter version of astro-ph/0501624
Number squeezing, quantum fluctuations and oscillations in mesoscopic Bose Josephson junctions
Creators: name: Ferrini, G.
name: Minguzzi, A.
name: Hekking, F. W. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Starting from a quantum two-mode Bose-Hubbard Hamiltonian we determine the ground state properties, momentum distribution and dynamical evolution for a Bose Josephson junction realized by an ultracold Bose gas in a double-well trap. Varying the well asymmetry we identify Mott-like regions of parameters where number fluctuations are suppressed and the interference fringes in the momentum distribution are strongly reduced. We also show how Schroedinger cat states, realized from an initially phase coherent state by a sudden rise of the barrier among the two wells, will give rise to a destructive interference in the time-dependent momentum distribution.
description: 4 pages, 3 figures
Cell-autonomous reduction of CYFIP2 is insufficient to induce Alzheimer's disease-like pathologies in the hippocampal CA1 pyramidal neurons of aged mice
Creators: name: Ma, Ruiying
name: Zhang, Yinhua
name: Li, Huiling
name: Kang, Hyae Rim
name: Kim, Yoonhee
name: Han, Kihoon
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biochemistry
Medicine
Cell Biology
Molecular Biology
Neuroscience
Pharmacology
Cancer
Mental Health

description: Cytoplasmic FMR1-interacting protein 2 (CYFIP2) is an evolutionarily conserved multifunctional protein that regulates the neuronal actin cytoskeleton, mRNA translation and transport, and mitochondrial morphology and function. Supporting its critical roles in proper neuronal development and function, human genetic studies have repeatedly identified variants of the CYFIP2 gene in individuals diagnosed with neurodevelopmental disorders. Notably, a few recent studies have also suggested a mechanistic link between reduced CYFIP2 level and Alzheimer's disease (AD). Specifically, in the hippocampus of 12-month-old Cyfip2 heterozygous mice, several AD-like pathologies were identified, including increased levels of Tau phosphorylation and gliosis, and loss of dendritic spines in CA1 pyramidal neurons. However, detailed pathogenic mechanisms, such as cell types and their circuits where the pathologies originate, remain unknown for AD-like pathologies caused by CYFIP2 reduction. In this study, we aimed to address this issue by examining whether the cell-autonomous reduction of CYFIP2 in CA1 excitatory pyramidal neurons is sufficient to induce AD-like phenotypes in the hippocampus. We performed immunohistochemical, morphological, and biochemical analyses in 12-month-old Cyfip2 conditional knock-out mice, which have postnatally reduced CYFIP2 expression level in CA1, but not in CA3, excitatory pyramidal neurons of the hippocampus. Unexpectedly, we could not find any significant AD-like phenotype, suggesting that the CA1 excitatory neuron-specific reduction of CYFIP2 level is insufficient to lead to AD-like pathologies in the hippocampus. Therefore, we propose that CYFIP2 reduction in other neurons and/or their synaptic connections with CA1 pyramidal neurons may be critically involved in the hippocampal AD-like phenotypes of Cyfip2 heterozygous mice.
Comparative transcriptome analysis between long- and short-term survival after pig-to-monkey cardiac xenotransplantation reveals differential heart failure development
Creators: name: Lim, Byeonghwi
name: Jang, Min-Jae
name: Oh, Seung-Mi
name: No, Jin Gu
name: Lee, Jungjae
name: Kim, Sang Eun
name: Ock, Sun A.
name: Yun, Ik Jin
name: Kim, Junseok
name: Chee, Hyun Keun
name: Kim, Wan Seop
name: Kang, Hee Jung
name: Cho, Kahee
name: Oh, Keon Bong
name: Kim, Jun-Mo
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Cardiac xenotransplantation is the potential treatment for end-stage heart failure, but the allogenic organ supply needs to catch up to clinical demand. Therefore, genetically-modified porcine heart xenotransplantation could be a potential alternative. So far, pig-to-monkey heart xenografts have been studied using multi-transgenic pigs, indicating various survival periods. However, functional mechanisms based on survival period-related gene expression are unclear. This study aimed to identify the differential mechanisms between pig-to-monkey post-xenotransplantation long- and short-term survivals. Heterotopic abdominal transplantation was performed using a donor CD46-expressing GTKO pig and a recipient cynomolgus monkey. RNA-seq was performed using samples from POD60 XH from monkey and NH from age-matched pigs, D35 and D95. Gene-annotated DEGs for POD60 XH were compared with those for POD9 XH (Park et al. 2021). DEGs were identified by comparing gene expression levels in POD60 XH versus either D35 or D95 NH. 1,804 and 1,655 DEGs were identified in POD60 XH versus D35 NH and POD60 XH versus D95 NH, respectively. Overlapped 1,148 DEGs were annotated and compared with 1,348 DEGs for POD9 XH. Transcriptomic features for heart failure and inhibition of T cell activation were observed in both long (POD60)- and short (POD9)-term survived monkeys. Only short-term survived monkey showed heart remodeling and regeneration features, while long-term survived monkey indicated multi-organ failure by neural and hormonal signaling as well as suppression of B cell activation. Our results reveal differential heart failure development and survival at the transcriptome level and suggest candidate genes for specific signals to control adverse cardiac xenotransplantation effects.
Evolution of polymorphism and sympatric speciation through competition in a unimodal distribution of resources
Creators: name: Brigatti, E.
name: Martins, J. S. Sa'
name: Roditi, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: A microscopic agent dynamical model for diploid age-structured populations is used to study evolution of polymorphism and sympatric speciation. The underlying ecology is represented by a unimodal distribution of resources of some width. Competition among individuals is also described by a similar distribution, and its strength is maximum for individuals with the same phenotype and decreases with distance in phenotype space as a gaussian, with some width. These two widths define the model's phase space, in which we identify the regions where an autonomous emergence of stable polymorphism or speciation is more likely.
description: 7 pages, 6 figures, changed content
Central jet production as a probe of the perturbative formalism for exclusive diffraction
Creators: name: Khoze, V. A.
name: Martin, A. D.
name: Ryskin, M. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new variable, R_j, in order to identify exclusive double-diffractive high E_T dijet production. The variable R_j is calculated using the transverse energy E_T and pseudorapidity of the jet with the largest E_T. For a purely exclusive event the value of R_j -> 1, if we were to neglect hadronisaton and the detector resolution effects. To illustrate the expected R_j-distribution we also compute exclusive three-jet production; and, moreover, include jet smearing effects. By studying the predictions as a function of the size of the rapidity interval, delta(eta), which allows for additional gluon radiation, one can probe the QCD radiation effects which are responsible for the Sudakov suppression of the exclusive amplitude. In this way we may check, and improve, the formalism used to predict the cross sections of exclusive double-diffractive Higgs boson (and/or other New Physics) production.
description: 18 pages, 6 figures. More details are given for the calculation of exclusive 3-jet production. The R_j distributions of exclusive 3-jet production in Figs. 4 and 5 are corrected. This version is to be published in Eur. Phys. J. C
Timing performance of a multi-pad PICOSEC-Micromegas detector prototype
Creators: name: Aune, S.
name: Bortfeldt, J.
name: Brunbauer, F.
name: David, C.
name: Desforge, D.
name: Fanourakis, G.
name: Gallinaro, M.
name: García, F.
name: Giomataris, I.
name: Gustavsson, T.
name: Iguaz, F. J.
name: Kebbiri, M.
name: Kordas, K.
name: Lampoudis, C.
name: Legou, P.
name: Lisowska, M.
name: Liu, J.
name: Lupberger, M.
name: Maillard, O.
name: Manthos, I.
name: Müller, H.
name: Oliveri, E.
name: Papaevangelou, T.
name: Paraschou, K.
name: Pomorski, M.
name: Qi, B.
name: Resnati, F.
name: Ropelewski, L.
name: Sampsonidis, D.
name: Scharenberg, L.
name: Schneider, T.
name: Sohl, L.
name: van Stenis, M.
name: Tsiamis, A.
name: Tsipolitis, Y.
name: Tzamarias, S. E.
name: Utrobicic, A.
name: Veenhof, R.
name: Wang, X.
name: White, S.
name: Zhang, Z.
name: Zhou, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The multi-pad PICOSEC-Micromegas is an improved detector prototype with a segmented anode, consisting of 19 hexagonal pads. Detailed studies are performed with data collected in a muon beam over four representative pads. We demonstrate that such a device, scalable to a larger area, provides excellent time resolution and detection efficiency. As expected from earlier single-cell device studies, we measure a time resolution of approximately 25 picoseconds for charged particles hitting near the anode pad centers, and up to 30 picoseconds at the pad edges. Here, we study in detail the effect of drift gap thickness non-uniformity on the timing performance and evaluate impact position based corrections to obtain a uniform timing response over the full detector coverage.
description: 29 pages, 20 figures
CLEO Dalitz plot results
Creators: name: Rosner, Jonathan L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Present and future contributions of the CLEO experiment to the study of $D$ Dalitz plots are presented. Such Dalitz plots can be of help in determining weak phases from $B \to D K$ decays.
description: 4 pages, 6 figures, presented at Beauty 2005, Assisi, Italy, June 20-24, 2005, on behalf of CLEO Collaboration, one reference added
Safe Learning and Optimization Techniques: Towards a Survey of the State of the Art
Creators: name: Kim, Youngmin
name: Allmendinger, Richard
name: López-Ibáñez, Manuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.2.8

description: Safe learning and optimization deals with learning and optimization problems that avoid, as much as possible, the evaluation of non-safe input points, which are solutions, policies, or strategies that cause an irrecoverable loss (e.g., breakage of a machine or equipment, or life threat). Although a comprehensive survey of safe reinforcement learning algorithms was published in 2015, a number of new algorithms have been proposed thereafter, and related works in active learning and in optimization were not considered. This paper reviews those algorithms from a number of domains including reinforcement learning, Gaussian process regression and classification, evolutionary algorithms, and active learning. We provide the fundamental concepts on which the reviewed algorithms are based and a characterization of the individual algorithms. We conclude by explaining how the algorithms are connected and suggestions for future research.
description: The final authenticated publication was made In: Heintz F., Milano M., O'Sullivan B. (eds) Trustworthy AI - Integrating Learning, Optimization and Reasoning. TAILOR 2020. Lecture Notes in Computer Science, vol 12641. Springer, Cham. The final authenticated publication is available online at \
Robust implementations of Quantum Repeaters
Creators: name: Klein, Alexander
name: Dorner, Uwe
name: Alves, Carolina Moura
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show how to efficiently exploit decoherence free subspaces (DFSs), which are immune to collective noise, for realizing quantum repeaters with long lived quantum memories. Our setup consists of an assembly of simple modules and we show how to implement them in systems of cold, neutral atoms in arrays of dipole traps. We develop methods for realizing robust gate operations on qubits encoded in a DFS using collisional interactions between the atoms. We also give a detailed analysis of the performance and stability of all required gate operations and emphasize that all modules can be realized with current or near future experimental technology.
description: 15 pages, 14 figures, minor changes in the introduction and Sec. III D, typos corrected, accepted for publication in Phys. Rev. A
Growth and Characterization of Metastable Hexagonal Nickel Thin Films via Plasma-Enhanced Atomic Layer Deposition
Creators: Motamedi, Pouyan
Bosnick, ken
Cui, Kai
Cadien, Ken
Hogan, James D.
Publisher: name: University of Alberta Library
Year: 2017

There is a great interest in various branches of the advanced materials industry for the development of novel methods (and improvements to existing ones) for the deposition of conformal ultrathin metallic films. In most of these applications, like enhanced solar absorbers and microelectronics, achieving the capacity to deposit a conformal thin film on a three-dimensional structure is an important condition. Plasma-enhanced atomic layer deposition (ALD) is known for its potential for growth of conformal thin films with a precise control over the thickness and its capability for deposition at relatively low temperatures (below 500 °C). This study evaluates the potential of plasma-enhanced ALD for growth of conformal nickel thin films, using bis(ethylcyclopentadienyl)nickel and nitrogen/hydrogen plasma as precursors. A comprehensive analysis of the structure, composition, and physical properties of the films was performed. The results indicate that conformal nickel films with low levels of impurity were successfully deposited on sapphire. The films had a roughness of Ra = 1.5 nm and were seen to be under strain. The deposited nickel had a hexagonal crystal structure, with a random in-plane orientation of the grains, while the grains had their c-axes oriented along the normal to the interface. These results pave the way for conformal low-temperature deposition of high-quality nickel thin films on three-dimensional structures.
HST/ACS Images of the GG Tauri Circumbinary Disk
Creators: name: Krist, J. E.
name: Stapelfeldt, K. R.
name: Golimowski, D. A.
name: Ardila, D. R.
name: Clampin, M.
name: Martel, A. R.
name: Ford, H. C.
name: Illingworth, G. D.
name: Hartig, G. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Hubble Space Telescope Advanced Camera for Surveys images of the young binary GG Tauri and its circumbinary disk in V and I bandpasses were obtained in 2002 and are the most detailed of this system to date. The confirm features previously seen in the disk including: a "gap" apparently caused by shadowing from circumstellar material; an asymmetrical distribution of light about the line of sight on the near edge of the disk; enhanced brightness along the near edge of the disk due to forward scattering; and a compact reflection nebula near the secondary star. New features are seen in the ACS images: two short filaments along the disk; localized but strong variations in disk intensity ("gaplets"); and a "spur" or filament extending from the reflection nebulosity near the secondary. The back side of the disk is detected in the V band for the first time. The disk appears redder than the combined light from the stars, which may be explained by a varied distribution of grain sizes. The brightness asymmetries along the disk suggest that it is asymmetrically illuminated by the stars due to extinction by nonuniform circumstellar material or the illuminated surface of the disk is warped by tidal effects (or perhaps both). Localized, time-dependent brightness variations in the disk are also seen.
description: 28 pages, 7 figures, accepted for publication in the Astronomical Journal
Renormalization group in difference systems
Creators: name: Iwasa, Masatomo
name: Nozaki, Kazuhiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A new singular perturbation method based on the Lie symmetry group is presented to a system of difference equations. This method yields consistent derivation of a renormalization group equation which gives an asymptotic solution of the difference equation. The renormalization group equation is a Lie differential equation of a Lie group which leaves the system approximately invariant. For a 2-D symplectic map, the renormalization group equation becomes a Hamiltonian system and a long-time behaviour of the symplectic map is described by the Hamiltonian. We study the Poincaré-Birkoff bifurcation in the 2-D symplectic map by means of the Hamiltonian and give a condition for the bifurcation.
description: Accepted to J. Phys. A, 7 pages
Référencer un article, une revue, une plateforme
Creators: name: Bassinet, Aricia
name: Battesti, Daniel
name: Braud, Marion
name: Cazin, Maxime
name: Chollier, Vincent
name: Cohoner, Véronique
name: Hueber, Juliette
name: Izuel-Martinez, Isabel
name: Meyer, Camille
name: Thomas, Armelle
Publisher: name: Zenodo
Year: 2023
Subjects: édition scientifique
référencement
référencement naturel
SEO
Search Engine Optimization

description: Cette fiche pratique définit de manière synthétique le référencement d'un contenu éditorial (article, revue, plateforme). Elle s'adresse aux enseignants-chercheurs et éditeurs des revues, ainsi qu'aux équipes des pépinières et plateformes qui les diffusent. Elle a été réalisée par le GT référencement du réseau Repères.

Mise en forme graphique : Basile Bayoux (coordinateur du réseau Repères, Université Jean Moulin Lyon 3).
The Solar Neighborhood XIII: Parallax Results from the CTIOPI 0.9-m Program -- Stars with mu >= 1"/year (MOTION Sample)
Creators: name: Jao, Wei-Chun
name: Henry, Todd J.
name: Subasavage, John P.
name: Brown, Misty A.
name: Ianna, Philip A.
name: Bartlett, Jennifer L.
name: Costa, Edgardo
name: Mendz, Rene
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first set of definitive trigonometric parallaxes and proper motions from the Cerro Tololo Inter-American Observatory Parallax Investigation (CTIOPI). Full astrometric reductions for the program are discussed, including methods of reference stars selection, differential color refraction corrections, and conversion of relative to absolute parallax. Using data acquired at the 0.9-m at CTIO, full astrometric solutions and $VRIJHK_s$ photometry are presented for 36 red and white dwarf stellar systems with proper motions faster than 1\farcs0/yr. Of these, thirty three systems have the first ever trigonometric parallaxes, which comprise 41% of MOTION systems (those with proper motions greater than 1\farcs0/yr) south of $δ$ $=$ 0 that have no parallaxes. Four of the systems are new members of the RECONS 10 pc sample for which the first accurate trigonometric parallaxes are published here: DENIS J1048-3956 (4.04 $\pm$ 0.03 pc), GJ 1128 (LHS 271, 6.53 $\pm$ 0.10 pc), GJ 1068 (LHS 22, 6.97 $\pm$ 0.09 pc), and GJ 1123 (LHS 263, 9.02 $\pm$ 0.16 pc). In addition, two red subdwarf-white dwarf pairs, LHS 193AB and LHS 300AB, are identified. The white dwarf secondaries fall in a previously uncharted region of the HR diagram.
description: 40 pages, 7 figures, accepted to The Astronomical Journal (scheduled for April 2005 issue), Re-submit, Table 2 running off the bottom of the page has been fixed
Mapping kidney tubule diameter ex vivo by diffusion MRI
Creators: name: Morozov, Darya
name: Parvin, Neda
name: Charlton, Jennifer
name: Bennett, Kevin
Publisher: name: figshare
Year: 2021
Subjects: subject: 110312 Nephrology and Urology
subject: FOS: Clinical medicine

description: Mapping kidney tubule diameter ex vivo by diffusion MRI-Supplementary Material
Full Counting Statistics of Interacting Electrons
Creators: name: Bagrets, D. A.
name: Utsumi, Y.
name: Golubev, D. S.
name: Schoen, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In order to fully characterize the noise associated with electron transport, with its severe consequences for solid-state quantum information systems, the theory of full counting statistics has been developed. It accounts for correlation effects associated with the statistics and effects of entanglement, but it remains a non-trivial task to account for interaction effects. In this article we present two examples: we describe electron transport through quantum dots with strong charging effects beyond perturbation theory in the tunneling, and we analyze current fluctuations in a diffusive interacting conductor.
description: To be published in special issue of "Fortschritte der Physik" (ed. by Wolfgang Schleich)
Thermal Operator Representation of Finite Temperature Graphs
Creators: name: Brandt, Fernando T.
name: Das, Ashok
name: Espinosa, Olivier
name: Frenkel, Josif
name: Perez, Silvana
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the mixed space representation (t,p) in the context of scalar field theories, we prove in a simple manner that the Feynman graphs at finite temperature are related to the corresponding zero temperature diagrams through a simple thermal operator, both in the imaginary time as well as in the real time formalisms. This result is generalized to the case when there is a nontrivial chemical potential present. Several interesting properties of the thermal operator are also discussed.
description: 20 pages, seven figures
Imitation of Success Leads to Cost of Living Mediated Fairness in the Ultimatum Game
Creators: name: Chen, Yunong
name: Belmonte, Andrew
name: Griffin, Christopher
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The mechanism behind the emergence of cooperation in both biological and social systems is currently not understood. In particular, human behavior in the Ultimatum game is almost always irrational, preferring mutualistic sharing strategies, while chimpanzees act rationally and selfishly. However, human behavior varies with geographic and cultural differences leading to distinct behaviors. In this paper, we analyze a social imitation model that incorporates internal energy caches (e.g., food/money savings), cost of living, death, and reproduction. We show that when imitation (and death) occurs, a natural correlation between selfishness and cost of living emerges. However, in all societies that do not collapse, non-Nash sharing strategies emerge as the de facto result of imitation. We explain these results by constructing a mean-field approximation of the internal energy cache informed by time-varying distributions extracted from experimental data. Results from a meta-analysis on geographically diverse ultimatum game studies in humans, show the proposed model captures some of the qualitative aspects of the real-world data and suggests further experimentation.
description: 11 pages, 6 figures
Test Beam Results of Geometry Optimized Hybrid Pixel Detectors
Creators: name: Becks, K. -H.
name: Gerlach, P.
name: Grah, C.
name: Maettig, P.
name: Rohe, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Multi-Chip-Module-Deposited (MCM-D) technique has been used to build hybrid pixel detector assemblies. This paper summarises the results of an analysis of data obtained in a test beam campaign at CERN. Here, single chip hybrids made of ATLAS pixel prototype read-out electronics and special sensor tiles were used. They were prepared by the Fraunhofer Institut fuer Zuverlaessigkeit und Mikrointegration, IZM, Berlin, Germany. The sensors feature an optimized sensor geometry called equal sized bricked. This design enhances the spatial resolution for double hits in the long direction of the sensor cells.
description: Contribution to Proceedings of Pixel2005 Workshop, Bonn Germany 2005
Rotons in Anyon Superfluids
Creators: name: Du, Yi-Hsien
name: Mehta, Umang
name: Son, Dam Thanh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the problem of calculating the excitation spectrum of a gas of nonrelativistic anyons. When the anyons have statistics close to fermionic and the statistical angle has the form $θ=π(1-\frac{1}{k})$ where $k$ is a large integer, the problem can be solved by employing the method of bosonization, which maps the problem to that of an infinite number of bosonic excitations coupled to a $U(1)$ Chern-Simons gauge field. The spectrum consists of a Goldstone boson branch and a large number of massive branches, each having roton minima and maxima. The dispersion curves asymptote to the Landau levels at large momentum.
description: 19 pages, 2 figures; clarifications added, typos fixed
Generalized canonical ensembles and ensemble equivalence
Creators: name: Costeniuc, M.
name: Ellis, R. S.
name: Touchette, H.
name: Turkington, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This paper is a companion article to our previous paper (J. Stat. Phys. 119, 1283 (2005), cond-mat/0408681), which introduced a generalized canonical ensemble obtained by multiplying the usual Boltzmann weight factor $e^{-βH}$ of the canonical ensemble with an exponential factor involving a continuous function $g$ of the Hamiltonian $H$. We provide here a simplified introduction to our previous work, focusing now on a number of physical rather than mathematical aspects of the generalized canonical ensemble. The main result discussed is that, for suitable choices of $g$, the generalized canonical ensemble reproduces, in the thermodynamic limit, all the microcanonical equilibrium properties of the many-body system represented by $H$ even if this system has a nonconcave microcanonical entropy function. This is something that in general the standard ($g=0$) canonical ensemble cannot achieve. Thus a virtue of the generalized canonical ensemble is that it can be made equivalent to the microcanonical ensemble in cases where the canonical ensemble cannot. The case of quadratic $g$-functions is discussed in detail; it leads to the so-called Gaussian ensemble.
description: 8 pages, 4 figures (best viewed in ps), revtex4. Changes in v2: Title changed, references updated, new paragraph added, minor differences with published version