cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supplementary Material for Do people imitate when making a decision from Do people imitate when making decisions? Evidence from a spatial Prisoner’s Dilemma experiment
Creators: name: Grujić, Jelena
name: Lenaerts, Tom
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics
subject: 80201 Analysis of Algorithms and Complexity

description: This file contains additional information concerning the experiments that did not appear in the paper
Demands for Food Products Across the Development Spectrum: Application of a Rank Four Demand System
Creators: name: Cranfield, John A.L.
name: Cranfield, John A.L.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Demand and Price Analysis
subject: Consumer demand
subject: model selection
subject: demand system rank

description: A rational rank four AIDS model (RAIDS) is used to estimate consumer demands for final goods and services in countries spanning the development spectrum. RAIDS is used as it provides more general price and expenditure responses. It also nests the Quadratic and non-liner AIDS models. RAIDS is estimated using the entire sample and sub-samples based on the country's level of per capita expenditure. Results indicate selection of nested functional form differs by sub-sample. AIDS is selected for the low per capita expenditure countries, sample is considered. Differences in parameter estimates manifest themselves in price and Engel elasticities. Such differences warrant caution when using global demand systems to undertake policy analysis.
Structure and stability of Mott-insulator shells of bosons trapped in an optical lattice
Creators: name: DeMarco, B.
name: Lannert, C.
name: Vishveshwara, S.
name: Wei, T. -C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the feasibility of creating a phase of neutral bosonic atoms in which multiple Mott-insulating states coexist in a shell structure and propose an experiment to spatially resolve such a structure. This spatially-inhomogeneous phase of bosons, arising from the interplay between the confining potential and the short-ranged repulsion, has been previously predicted. While the Mott-insulator phase has been observed in an atomic gas, the spatial structure of this phase in the presence of an inhomogeneous potential has not yet been directly probed. In this paper, we give a simple recipe for creating a structure with any desired number of shells, and explore the stability of the structure under typical experimental conditions. The stability analysis gives some constraints on how successfully these states can be employed for quantum information experiments. The experimental probe we propose for observing this phase exploits transitions between two species of bosons, induced by applying a frequency-swept, oscillatory magnetic field. We present the expected experimental signatures of this probe, and show that they reflect the underlying Mott configuration for large lattice potential depth.
Algoritimos_1575313788-1575313788-seminario-artigos.pdf
Creators: name: SILVA, LEONARDO FERREIRA DA
name: Silva, Juliana Cristina Da
name: Carvalho, Lucas Pinto De
name: Adjane Brito Alves
name: Wanderley Leite Da Silva-Junior
Publisher: name: figshare
Year: 2021
Subjects: subject: 10299 Applied Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Como metrópoles e megalópoles contemporâneos vivem um drama inerente ao desenvolvimento urbano que é o constante crescimento da demanda de transporte, seja o transporte público ou particular, de cargas ou de passageiros. Atualmente, pesquisa, gestores públicos e demais profissionais do setor de Transportes podem contar com softwares para auxílio na tomada de decisões referentes ao planejamento a médio e longo prazo, definição de projeto, implementação de sinalização horizontal e vertical, entre outras atividades que requerer Precisão e velocidade na análise situacional. Este trabalho pretende expor a importância dos algoritmos para os programas computacionais que são utilizados para preparação de projetos de sistemas viários urbanos com vistas à importância do ensino,
Source Data.zip
Creators: name: Feiyan Xu
Publisher: name: figshare
Year: 2020
Subjects: subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences

description: The source data underlying Figs. 1d–e, 2d, 3a–3f, 4a–4d, 4h, 4j and Supplementary Figs. 1, 3, 4–6, 11, 12a, 13–17, 20 and 21.
Die Glaubenssymbole des Epiphanios von Salamis und des Gregorios Thaumaturgos im Qērellos
Creators: name: Weischer, Bernd Manuel
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 61 (1977): Oriens christianus, Band 61
Maxwell-type behaviour from a geometrical structure
Creators: name: Itin, Yakov
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study which geometric structure can be constructed from the vierbein (frame/coframe) variables and which field models can be related to this geometry. The coframe field models, alternative to GR, are known as viable models for gravity, since they have the Schwarzschild solution. Since the local Lorentz invariance is violated, a physical interpretation of additional six degrees of freedom is required. The geometry of such models is usually given by two different connections -- the Levi-Civita symmetric and metric-compatible connection and the Weitzenbock flat connection. We construct a general family of linear connections of the same type, which includes two connections above as special limiting cases. We show that for dynamical propagation of six additional degrees of freedom it is necessary for the gauge field of infinitesimal transformations (antisymmetric tensor) to satisfy the system of two first order differential equations. This system is similar to the vacuum Maxwell system and even coincides with it on a flat manifold. The corresponding ``Maxwell-compatible connections'' are derived. Alternatively, we derive the same Maxwell-type system as a symmetry conditions of the viable models Lagrangian. Consequently we derive a nontrivial decomposition of the coframe field to the pure metric field plus a dynamical field of infinitesimal Lorentz rotations. Exact spherical symmetric solution for our dynamical field is derived. It is bounded near the Schwarzschild radius. Further off, the solution is close to the Coulomb field.
description: 25 pages, 3 figures. Printed version
Mobilizing workforce management for Gen-X: The challenges of new baby boomers in Malaysia
Creators: name: Ali, Muhammad Najib
Publisher: name: figshare
Year: 2020
Subjects: subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business
subject: 130199 Education systems not elsewhere classified
subject: FOS: Educational sciences

description: ABSTRACT The Gen-X workers should retain their significant role in workforce. Ignoring them due to incompetence in new digital skill sets and ignoring them in future due less mobility and ageing factor were a mistake. As potential baby-boomers, respondents agreed that talent Gen-X could be engaged and developed to guide the programme for professionals like school teachers, counsellors, researchers, policy makers and academician. There were 100 questionnaires distributed to target group including officers of PAWE, “Jabatan Kebajikan Masyarakat” and “Pejabat Kebajikan Masyarakat” and operator of home care within the Klang Valley. This paper examined three (3) factors contribute towards the development of productive and active Gen-X in the society. The effective communication skills in presentation, critical thinking and problem solving have shown a moderate relationship towards facilitating and mobilizing Gen-X workforce in Malaysia. The factors of inconsistency English as medium will lower the quality standards of workforce and low quality skill of workforce in the context of industrial revolution 4.0 have shown a moderate relationship towards facilitating the Gen-X workforce in Malaysia. Skill, knowledge and experience of Gen X’s were mediate by education policy plan in Malaysia towards facilitating the Gen-X workforce in Malaysia. The public university in Malaysia has assume a significant role in transforming the mindset in nurturing Gen-X’s skill, knowledge and experiences resources towards shaping up the knowledge of professionals like school teachers, counsellors, researchers, policy makers and academician. In the development of the intervention program, the qualitative data were obtained from focus groups provided an opportunity to explore the significant aspects of the intervention program for Gen-X. The focus group of this study would be senior school teachers, counsellors, researchers, policy makers and academician. These interviews were conducted to 50 participants’ aged 45 to 55 of focus group above within the Klang Valley. The owners permit to record one (1) hour discussion and made verbatim transcriptions. They analyzed the data using qualitative content thematic analysis. The results point to significant paths between the new organizational-culture which including social support and leadership where the intervention program VLTS has been work out to produce professional of well-being and job satisfaction within the context of globalization, implications for social work management practices for implementing mobilizing workforce policies and practices. Key words: mobilizing workforce, intervention program, active and productive of talent elderly
Gamma-Ray Emission from Microquasars
Creators: name: Bernado, M. M. Kaufman
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Microquasars, X-ray binary systems that generate relativistic jets, were discovered in our Galaxy in the last decade of the XXth century. Their name indicates that they are manifestations of the same physics as quasars but on a completely different scale. Parallel to this discovery, the EGRET instrument on board of the Compton Gamma Ray Observatory detected 271 point like gamma-ray sources 170 of which were not clearly identified with known objects. This marked the beginning of gamma-ray source population studies in the Galaxy. We present in this thesis models for gamma-ray production in microquasars with the aim to propose them as possible parent populations for different groups of EGRET unidentified sources. These models are developed for a variety of scenarios taking into account several possible combinations, i.e. black holes or neutron stars as the compact object, low mass or high mass stellar companions, as well as leptonic or hadronic gamma-ray production processes. We also show that the presented models for gamma-rays emitting microquasars can be used to explain observations from well known sources that are detected in energy ranges other than EGRET's. Finally, we include an alternative gamma-ray producing situation that does not involve microquasars but a specific unidentified EGRET source possibly linked to a magnetized accreting pulsar.
description: PhD Thesis supervised by G.E. Romero and presented at the University of Buenos Aires (UBA) on December 15th, 2004
Understanding elderly as Travel Companionship in silver hair community in Malaysia
Creators: name: Ali, Muhammad Najib
Publisher: name: figshare
Year: 2020
Subjects: subject: 140208 Health Economics
subject: FOS: Economics and business
subject: 140216 Tourism Economics

description: ABSTRACT This article combines between Theory of Person Centred Therapy and Maslow Hierarchy of Needs Theory in assuming the role of independent and active elderly as a traveller companionship. The person-centred traveller companionship signifies the relevant policies and practices needed as person centric elderly as traveller companionship. According to secondary data of travel group portal, The United States of America (USA) leads in the total numbers of travel group which contributes to uniqueness criteria in becoming an individual traveller companionship. The criteria’s of travel buddies from US and their services offered would be the main theme in determining the relationship between independent and active elderly as personcentred traveller companionship which contribute towards the performance of the travel organization. The data from interviews demonstrates significant values as the criteria being a person-centred for elderly traveller companionship. It represents the main theme and the result of the interviews identify the quality of services required as person-centred for elderly traveller companionship to amend policy and practices needed as person centric elderly as traveller companionship. Key words: Person Centred Therapy, traveller companionship.
Scissor-cross ionization injection in laser wakefield accelerators
Creators: name: Wang, Jia
name: Zeng, Ming
name: Wang, Xiaoning
name: Li, Dazhang
name: Gao, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We propose to use a frequency doubled pulse colliding with the driving pulse at an acute angle to trigger ionization injection in a laser wakefield accelerator. This scheme effectively reduces the duration that injection occurs, thus high injection quality is obtained. Three-dimensional particle-in-cell simulations show that electron beams with energy of ~500 MeV, charge of ~40 pC, energy spread of ~1% and normalized emittance of a few millimeter milliradian can be produced by ~100 TW laser pulses. By adjusting the angle between the two pulses, the intensity of the trigger pulse and the gas dope ratio, the charge and energy spread of the electron beam can be controlled.
description: 12 pages, 6 figures
TECNOLOGIA DA INFORMAÇÃO COMO FERRAMENTA PARA MONITORAR O IMPACTO AMBIENTAL DE VEÍCULOS ABANDONADOS EM ESPAÇO URBANO
Creators: name: SILVA, LEONARDO FERREIRA DA
name: Ribeiro, Andreza Portella
Publisher: name: figshare
Year: 2021
Subjects: subject: 50204 Environmental Impact Assessment
subject: FOS: Earth and related environmental sciences
subject: 50205 Environmental Management
subject: 50206 Environmental Monitoring
subject: 59999 Environmental Sciences not elsewhere classified

description: Este estudo foi elaborado com vistas a resolver para solucionar problemas relacionados aoplanejamento urbano e gestão das cidades, enfatizando-se três aspectos; saúde pública, gestãoambiental e mobilidade urbana, priorizando os riscos potenciais de contaminação ocasionados por veículos abandonados e apreendidos na cidade de São Paulo. Para tanto, foi realizada uma revisão bibliográfica, na qual foram identificados pontos frágeis quanto ao acesso à informações para pesquisa e tomada de decisão. Deste modo, será apresentado uma proposta, por meio de “tecnologia” para que, de maneira colaborativa, os cidadãs contribuir para a preservação ambiental, aumento da segurança e qualidade de vida nas cidades
Room sound field prediction by acoustical radiosity
Creators: name: Nosal, Eva-Marie
Publisher: name: University of British Columbia
Year: 2009

description: Acoustical radiosity is a technique based on assumptions of diffuse reflection and incoherent phase relationships that has been used to predict room sound fields. In this research, the background to acoustical radiosity is given, the integral equation (on which the technique is based) is derived, and a numerical solution is detailed for convex rooms of arbitrary shape. Several validations are made by comparison of the numerical solution to (1) analytical solutions for a sphere; (2) results from a ray tracing algorithm in cubical enclosures, and; (3) measurements in three real rooms.
Source Data
Creators: name: Feiyan Xu
Publisher: name: figshare
Year: 2020
Subjects: subject: 30601 Catalysis and Mechanisms of Reactions
subject: FOS: Chemical sciences

description: The source data underlying Figs. 1d-e, 2d, 3a-f, 4a-d, 4h, 4j ,Supplementary Figs. 1, 3, 4-6, 11, 12a, 13-17, 20, 21 and Supplementary Table 3.
Synchronisation phase as an indicator of persistent quantum correlations between subsystems
Creators: name: Siwiak-Jaszek, Stefan
name: Le, Thao P.
name: Olaya-Castro, Alexandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spontaneous synchronisation is a collective phenomenon that can occur in both dynamical classical and quantum systems. Here, we analyse the spontaneous synchronisation dynamics of vibrations assisting energy transfer in a bio-inspired system. We find the emergence of a constant non-zero `synchronisation phase' between synchronised vibrational displacements as the natural frequencies of the oscillators are detuned. This phase difference arises from the asymmetric participation of local modes in the long-lived synchronised state. Furthermore, we investigate the relationships between the synchronisation phase, detuning and the degree of quantum correlations between the synchronising subsystems and find that the synchronisation phase captures how quantum correlations persistently exceed classical correlations during the dynamics. We show that our analysis applies to a variety of spontaneously synchronising open quantum systems. Our work therefore opens up a promising avenue to investigate non-trivial quantum phenomena in complex biomolecular and nano-scale chemical systems.
description: 12 pages + references, 10 figures
Blow-up solitons at the nonlinear stage of the two-stream instability in quantum plasmas
Creators: name: Lashkin, V. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The nonlinear evolution of the quantum two-stream instability in a plasma with counter-streaming electron beams is studied. It is shown that in the long-wave limit the nonlinear stage of the instability can be described by the elliptic nonlinear string equation. We present two types of the nonlinear solutions. The first one is an unstable nonlinear mode that is continuously related with the growing linear solution and the second one is a pulsating soliton. We show that both of these solutions blow up in a finite time.
description: https://iopscience.iop.org/article/10.1209/0295-5075/130/30001
Out of One, Many: Distinguishing Time Delays from Lensed Supernovae
Creators: name: Denissenya, Mikhail
name: Bag, Satadru
name: Kim, Alex G.
name: Linder, Eric V.
name: Shafieloo, Arman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitationally lensed Type Ia supernovae are an emerging probe with great potential for constraining dark energy, spatial curvature, and the Hubble constant. The multiple images and their time delayed and magnified fluxes may be unresolved, however, blended into a single lightcurve. We demonstrate methods without a fixed source template matching for extracting the individual images, determining whether there are one (no lensing) or two or four (lensed) images, and measuring the time delays between them that are valuable cosmological probes. We find 100% success for determining the number of images for time delays greater than $\sim10$ days.
description: 9 pages, 6 figures; matches version published in MNRAS
Towards the Study of Morphological Processing of the Tangkhul Language
Creators: name: Shadang, Mirinso
name: Saharia, Navanath
name: Singh, Thoudam Doren
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: There is no or little work on natural language processing of Tangkhul language. The current work is a humble beginning of morphological processing of this language using an unsupervised approach. We use a small corpus collected from different sources of text books, short stories and articles of other topics. Based on the experiments carried out, the morpheme identification task using morphessor gives reasonable and interesting output despite using a small corpus.
description: In proceeding of Regional International Conference on Natural Language Processing (regICON) 2017, 3rd and 4th November 2017, Imphal, India
Solution of a Braneworld Big Crunch/Big Bang Cosmology
Creators: name: McFadden, Paul
name: Turok, Neil
name: Steinhardt, Paul J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We solve for the cosmological perturbations in a five-dimensional background consisting of two separating or colliding boundary branes, as an expansion in the collision speed V divided by the speed of light c. Our solution permits a detailed check of the validity of four-dimensional effective theory in the vicinity of the event corresponding to the big crunch/big bang singularity. We show that the four-dimensional description fails at the first nontrivial order in (V/c)^2. At this order, there is nontrivial mixing of the two relevant four-dimensional perturbation modes (the growing and decaying modes) as the boundary branes move from the narrowly-separated limit described by Kaluza-Klein theory to the well-separated limit where gravity is confined to the positive-tension brane. We comment on the cosmological significance of the result and compute other quantities of interest in five-dimensional cosmological scenarios.
description: 54 pages, 12 figures, URL updated & 3 references added
On-Shell Recurrence Relations for One-Loop QCD Amplitudes
Creators: name: Bern, Zvi
name: Dixon, Lance J.
name: Kosower, David A.
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: We present examples of on-shell recurrence relations for determining rational functions appearing in one-loop QCD amplitudes. In particular, we give relations for one-loop QCD amplitudes with all legs of positive helicity, or with one leg of negative helicity and the rest of positive helicity. Our recursion relations are similar to the tree-level ones described by Britto, Cachazo, Feng and Witten. A number of new features arise for loop amplitudes in non-supersymmetric theories like QCD, including boundary terms and double poles. We show how to eliminate the boundary terms, which would interfere with obtaining useful relations. Using the relations we give compact explicit expressions for the n-gluon amplitudes with one negative-helicity gluon, up through n=7.
description: 25 pages, 3 figures; v2 minor corrections; v3 additional motivation for contribution under double pole, more minor corrections
MHD accretion-ejection: jets launched by a non-isotropic accretion disk dynamo. I. Validation and application of selected dynamo tensorial components
Creators: name: Mattia, Giancarlo
name: Fendt, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Astrophysical jets are launched from strongly magnetized systems that host an accretion disk surrounding a central object. The origin of the jet launching magnetic field is one of the open questions for modeling the accretion-ejection process. Here we address the question how to generate the accretion disk magnetization and field structure required for jet launching. Applying the PLUTO code, we present the first resistive MHD simulations of jet launching including a non-scalar accretion disk mean-field $α^2Ω$-dynamo in the context of large scale disk-jet simulations. Essentially, we find the $α_ϕ$-dynamo component determining the amplification of the poloidal magnetic field, which is strictly related to the disk magnetization (and, as a consequence, to the jet speed, mass and collimation), while the $α_R$ and $α_θ$-dynamo components trigger the formation of multiple, anti-aligned magnetic loops in the disk, with strong consequences on the stability and dynamics of the disk-jet system. In particular, such loops trigger the formation of dynamo inefficient zones, which are characterized by a weak magnetic field, and therefore a lower value of the magnetic diffusivity. The jet mass, speed and collimation are strongly affected by the formation of the dynamo inefficient zones. Moreover, the $θ$-component of the $α$-dynamo plays a key role when interacting with a non-radial component of the seed magnetic field. We also present correlations between the strength of the disk toy dynamo coefficients and the dynamical parameters of the jet that is launched.
description: 20 pages, 9 figures, Accepted for publication in ApJ
Deep Homography Estimation in Dynamic Surgical Scenes for Laparoscopic Camera Motion Extraction
Creators: name: Huber, Martin
name: Ourselin, Sébastien
name: Bergeles, Christos
name: Vercauteren, Tom
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Current laparoscopic camera motion automation relies on rule-based approaches or only focuses on surgical tools. Imitation Learning (IL) methods could alleviate these shortcomings, but have so far been applied to oversimplified setups. Instead of extracting actions from oversimplified setups, in this work we introduce a method that allows to extract a laparoscope holder's actions from videos of laparoscopic interventions. We synthetically add camera motion to a newly acquired dataset of camera motion free da Vinci surgery image sequences through a novel homography generation algorithm. The synthetic camera motion serves as a supervisory signal for camera motion estimation that is invariant to object and tool motion. We perform an extensive evaluation of state-of-the-art (SOTA) Deep Neural Networks (DNNs) across multiple compute regimes, finding our method transfers from our camera motion free da Vinci surgery dataset to videos of laparoscopic interventions, outperforming classical homography estimation approaches in both, precision by 41%, and runtime on a CPU by 43%.
description: Accepted for publication in 2021 AE-CAI Special Issue of the Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization
Measuring the Milky Way mass distribution in the presence of the LMC
Creators: name: Magnus, Lilia Correa
name: Vasiliev, Eugene
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The ongoing interaction between the Milky Way (MW) and its largest satellite - the Large Magellanic Cloud (LMC) - creates a significant perturbation in the distribution and kinematics of distant halo stars, globular clusters and satellite galaxies, and leads to biases in MW mass estimates from these tracer populations. We present a method for compensating these perturbations for any choice of MW potential by computing the past trajectory of LMC and MW and then integrating the orbits of tracer objects back in time until the influence of the LMC is negligible, at which point the equilibrium approximation can be used with any standard dynamical modelling approach. We add this orbit-rewinding step to the mass estimation approach based on simultaneous fitting of the potential and the distribution function of tracers, and apply it to two datasets with the latest Gaia EDR3 measurements of 6d phase-space coordinates: globular clusters and satellite galaxies. We find that models with LMC mass in the range (1-2)x10^11 Msun better fit the observed distribution of tracers, and measure MW mass within 100 kpc to be (0.75+-0.1)x10^12 Msun, while neglecting the LMC perturbation increases it by ~15%.
description: matches published version
Long Cycles in a Perturbed Mean Field Model of a Boson Gas
Creators: name: Dorlas, Teunis C.
name: Martin, Philippe A.
name: Pulé, Joseph V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we give a precise mathematical formulation of the relation between Bose condensation and long cycles and prove its validity for the perturbed mean field model of a Bose gas. We decompose the total density $ρ=ρ_{\rm short}+ρ_{\rm long}$ into the number density of particles belonging to cycles of finite length ($ρ_{\rm short}$) and to infinitely long cycles ($ρ_{\rm long}$) in the thermodynamic limit. For this model we prove that when there is Bose condensation, $ρ_{\rm long}$ is different from zero and identical to the condensate density. This is achieved through an application of the theory of large deviations. We discuss the possible equivalence of $ρ_{\rm long}\neq 0$ with off-diagonal long range order and winding paths that occur in the path integral representation of the Bose gas.
description: 10 pages
On the mode structure of imperfect fluids
Creators: name: Zimdahl, Winfried
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper tries to obtain a simple picture of several aspects of the mode structure in relativistic non-equilibrium thermodynamics. Its pedagogical focus is on the relation between long-wavelength perturbation modes of the causal Müller-Israel-Stewart (MIS) theory and those of the traditional Eckart theory. Principally, this issue was clarified in a series of papers by Hiscock and Lindblom (see [8-10]). Here, I put together some essential features which do not require the entire formalism of the complete theory.
description: 11 pages
A 6-d View of Stellar Shells
Creators: name: Dong-Páez, C. A.
name: Vasiliev, E.
name: Evans, N. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stellar shells are low surface brightness features, created during nearly head-on galaxy mergers from the debris of the tidally disrupted satellite. Here, we investigate the formation and evolution mechanism of shells in six dimensions (3d positions and velocities). We propose a new description in action-angle coordinates which condenses the seemingly complex behaviour of an expanding shell system into a simple picture, and stresses the crucial role of the existence of different stripping episodes in the properties of shells. Based on our findings, we construct a method for constraining the potential of the host galaxy and the average epoch of stripping. The method is applicable even if the shells cannot be identified or isolated from the data, or if the data are heavily contaminated with additional foreground stars. These results open up a new possibility to study the ancient merger that built the Milky Way Galaxy's stellar halo.
description: matches published version
Constraints for quantum logic arising from conservation laws and field fluctuations
Creators: name: Gea-Banacloche, Julio
name: Ozawa, Masanao
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore the connections between the constraints on the precision of quantum logical operations that arise from a conservation law, and those arising from quantum field fluctuations. We show that the conservation-law based constraints apply in a number of situations of experimental interest, such as Raman excitations, and atoms in free space interacting with the multimode vacuum. We also show that for these systems, and for states with a sufficiently large photon number, the conservation-law based constraint represents an ultimate limit closely related to the fluctuations in the quantum field phase.
description: To appear in J. Opt. B: Quantum Semiclass. Opt., special issue on quantum control
Efficient Enumerations for Minimal Multicuts and Multiway Cuts
Creators: name: Kurita, Kazuhiro
name: Kobayashi, Yasuaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Let $G = (V, E)$ be an undirected graph and let $B \subseteq V \times V$ be a set of terminal pairs. A node/edge multicut is a subset of vertices/edges of $G$ whose removal destroys all the paths between every terminal pair in $B$. The problem of computing a {\em minimum} node/edge multicut is NP-hard and extensively studied from several viewpoints. In this paper, we study the problem of enumerating all {\em minimal} node multicuts. We give an incremental polynomial delay enumeration algorithm for minimal node multicuts, which extends an enumeration algorithm due to Khachiyan et al. (Algorithmica, 2008) for minimal edge multicuts. Important special cases of node/edge multicuts are node/edge {\em multiway cuts}, where the set of terminal pairs contains every pair of vertices in some subset $T \subseteq V$, that is, $B = T \times T$. We improve the running time bound for this special case: We devise a polynomial delay and exponential space enumeration algorithm for minimal node multiway cuts and a polynomial delay and space enumeration algorithm for minimal edge multiway cuts.
Die georgische Version des 1. und 2. Timotheusbriefes und des Titusbriefes ins Lateinische übertragen und nach Syriazismen untersucht
Creators: name: Molitor, Joseph
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 61 (1977): Oriens christianus, Band 61
A universal Hölder estimate up to dimension 4 for stable solutions to half-Laplacian semilinear equations
Creators: name: Cabre, Xavier
name: Sanz-Perela, Tomás
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J61, 35R11, 35B45, 35B35, 35B65

description: We study stable solutions to the equation $(-Δ)^{1/2} u = f(u)$, posed in a bounded domain of $\mathbb{R}^n$. For nonnegative convex nonlinearities, we prove that stable solutions are smooth in dimensions $n\leq 4$. This result, which was known only for $n=1$, follows from a new interior Hölder estimate that is completely independent of the nonlinearity $f$. A main ingredient in our proof is a new geometric form of the stability condition. It is still unknown for other fractions of the Laplacian and, surprisingly, it requires convexity of the nonlinearity. From it, we deduce higher order Sobolev estimates that allow us to extend the techniques developed by Cabré, Figalli, Ros-Oton, and Serra for the Laplacian. In this way we obtain, besides the Hölder bound for $n\leq 4$, a universal $H^{1/2}$ estimate in all dimensions. Our $L^\infty$ bound is expected to hold for $n\leq 8$, but this has been settled only in the radial case or when $f(u) = λe^u$. For other fractions of the Laplacian, the expected optimal dimension for boundedness of stable solutions has been reached only when $f(u) = λe^u$, even in the radial case.
description: 38 pages, 1 figure. Version 2 contains a new Liouville result (Corollary 1.5) which is a corollary of our main estimate. Version 3 contains a short comment (Remark 3.1) on the difficulties of extending the result to other powers of the Laplacian. Version 4 is the final version after referee report and proofs, we have added a comment to facilitate the interpretation of the colors of Figure 1
Additional file 1 of Goals of care or goals of life? A qualitative study of clinicians’ and patients’ experiences of hospital discharge using Patient-Oriented Discharge Summaries (PODS)
Creators: name: Nayantara Hattangadi
name: Kurdyak, Paul
name: Solomon, Rachel
name: Soklaridis, Sophie
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Hematology

description: Additional file 1.
AdS_{d+1} --> AdS_d
Creators: name: Clark, T. E.
name: Love, S. T.
name: Nitta, Muneto
name: ter Veldhuis, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Coset methods are used to construct the action describing the dynamics of the (massive) Nambu-Goldstone scalar degree of freedom associated with the spontaneous breaking of the isometry group of AdS_{d+1} space to that of an AdS_d subspace. The resulting action is an SO(2,d) invariant AdS generalization of the Nambu-Goto action. The vector field theory equivalent action is also determined.
description: 27 pages
The PDR structure and kinematics around the compact HII regions S235A and S235C with [CII], [13CII], [OI] and HCO+ line profiles
Creators: name: Kirsanova, M. S.
name: Ossenkopf-Okada, V.
name: Anderson, L. D.
name: Boley, P. A.
name: Bieging, J. H.
name: Pavlyuchenkov, Ya. N.
name: Luisi, M.
name: Schneider, N.
name: Andersen, M.
name: Samal, M. R.
name: Sobolev, A. M.
name: Buchbender, C.
name: Aladro, R.
name: Okada, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The aim of the present work is to study structure and gas kinematics in the photodissociation regions (PDRs) around the compact HII regions S235A and S235C. We observe the [CII], [13CII] and [OI] line emission, using SOFIA/upGREAT and complement them by data of HCO+ and CO. We use the [13CII] line to measure the optical depth of the [CII] emission, and find that the [CII] line profiles are influenced by self-absorption, while the [13CII] line remains unaffected by these effects. Hence, for dense PDRs, [13CII] emission is a better tracer of gas kinematics. The optical depth of the [CII] line is up to 10 in S235A. We find an expanding motion of the [CII]-emitting layer of the PDRs into the front molecular layer in both regions. Comparison of the gas and dust columns shows that gas components visible neither in the [CII] nor in low-J CO lines may contribute to the total column across S235A. We test whether the observed properties of the PDRs match the predictions of spherical models of expanding HII region + PDR + molecular cloud. Integrated intensities of the [13CII], [CII] and [OI] lines are well-represented by the model, but the models do not reproduce the double-peaked [CII] line profiles due to an insufficient column density of C+. The model predicts that the [OI] line could be a more reliable tracer of gas kinematics, but the foreground self-absorbing material does not allow using it in the considered regions.
description: accepted to MNRAS
Job stress among home care workers during Covid-19 pandemic: A case study in Malaysia
Creators: name: Ali, Muhammad Najib
Publisher: name: figshare
Year: 2020
Subjects: subject: 140208 Health Economics
subject: FOS: Economics and business
subject: 140205 Environment and Resource Economics

description: ABSTRACT The Corona Virus disease or Covid-19 pandemic outbreak has transformed new lifestyle of mankind across the globe. Triggered by anxiety, irritated and angry created by public have brought up a new norms construct by government and healthcare professionals which public need to be followed. However the new norms somehow create a stress among home care workers. During the Covid-19 pandemic, an adequate workforce including home care requires staffing in a number of areas which requires maximizing ability to care for a maximized number of elderly and limited scare physical and human skill and experience resources. The risks exposure of lifestyle, extra workloads, emotion due to new norms applied in normal work, limited scare resources of skill and experience should required a good organization effectiveness and efficiency management organization. The social stress theory describes a mediator in the relationship of social structure and crisis of this pandemic and how risks leverage among individuals (Stoddard, 2009). Data were analyzed to describe self-reported activities of home care as they interacted with 20 elderly and 25 caregivers in Home Care in Klang Valley. The subjective portions of reports were analyzed to identify concerns described by elderly to home care workers. In the end, this study will list psychosocial shield and psychological preparation by caregiver to overcome job stress due to limited scare resources and mental health problem of home care workers. Key words: Covid-19 pandemic, new norms, practices, psychological preparation
Quantum Squeezing Induced Optical Nonreciprocity
Creators: name: Tang, Lei
name: Tang, Jiangshan
name: Chen, Mingyuan
name: Nori, Franco
name: Xiao, Min
name: Xia, Keyu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an all-optical approach to achieve optical nonreciprocity on a chip by quantum squeezing one of two coupled resonator modes. By parametric pumping a nonlinear resonator unidirectionally with a classical coherent field, we squeeze the resonator mode in a selective direction due to the phase-matching condition, and induce a chiral photon interaction between two resonators. Based on this chiral interresonator coupling, we achieve an all-optical diode and a three-port quasi-circulator. By applying a second squeezed-vacuum field to the squeezed resonator mode, our nonreciprocal device also works for single-photon pulses. We obtain an isolation ratio of >40 dB for the diode and fidelity of $>98\%$ for the quasi-circulator, and insertion loss of <1 dB for both. We also show that nonreciprocal transmission of strong light can be switched on and off by a relative weak pump light. This achievement implies a nonreciprocal optical transistor. Our protocol opens up a new route to achieve integrable all-optical nonreciprocal devices permitting chip-compatible optical isolation and nonreciporcal quantum information processing.
Zur vierfachen Redaktion des Tifliser Paulustextes
Creators: name: Molitor, Joseph
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 61 (1977): Oriens christianus, Band 61
Artin groups and local indicability
Creators: name: Mulholland, Jamie Thomas
Publisher: name: University of British Columbia
Year: 2009

description: This thesis consists of two parts. The first part (chapters 1 and 2) consists of an introduction to theory of Coxeter groups and Artin groups. This material, for the most part, has been known for over thirty years, however, we do mention some recent developments where appropriate. In the second part (chapters 3-5) we present some new results concerning Artin groups of finite-type. In particular, we compute presentations for the commutator subgroups of the irreducible finite-type Artin groups, generalizing the work of Gorin and Lin [GL69] on the braid groups. Using these presentations we determine the local indicability of the irreducible finite-type Artin groups (except for F₄ which at this time remains undetermined). We end with a discussion of the current state of the right-orderability of the finite-type Artin groups.
Correlations of near-infrared, optical and X-ray luminosity for early-type galaxies
Creators: name: Ellis, S. C.
name: O'Sullivan, Ewan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The relation between X-ray luminosity and near-infrared luminosity for early-type galaxies has been examined. Near-infrared (NIR) luminosities should provide a superior measure of stellar mass compared to optical luminosities used in previous studies, especially if there is significant star-formation or dust present in the galaxies. However, we show that the X-ray-NIR relations are remarkably consistent with the X-ray-optical relations. This indicates that the large scatter of the relations is dominated by scatter in the X-ray properties of early-type galaxies, and is consistent with early-types consisting of old, quiescent stellar populations. We have investigated scatter in terms of environment, surface brightness profile, Mg2, H_beta, H_gamma line strength indices, spectroscopic age, and nuclear H_alpha emission. We found that galaxies with high Mg2 index, low H_beta and H_gamma indices or a `core' profile have a large scatter in Lx, whereas galaxies with low Mg2, high H_beta and H_gamma indices or `power-law' profiles, generally have Lx<10^41 erg/s. There is no clear trend in the scatter with environment or nuclear H_alpha emission.
description: Accepted for publication in MNRAS. 22 pages, 15 figures
Exactly Soluble Models for Surface Partition
Creators: name: Bugaev, K. A.
name: Elliott, J. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The surface partition of large clusters is studied analytically within a frame-work of the ``Hills and Dales Model''. Three formulations are solved exactly by using the Laplace-Fourier transformation method. In the limit of small amplitude deformations, the ``Hills and Dales Model'' gives upper and lower bounds for the surface entropy coefficient of large clusters. A comparison with the 2- and 3-dimensional Ising model surface entropy coefficients is made.
description: 7 pages and 2 figures
Doppler beaming factors for white dwarfs, main sequence stars, and giant stars Limb-darkening coefficients for 3D (DA and DB) white dwarf models
Creators: name: Claret, A.
name: Cukanovaite, E.
name: Burdge, K.
name: Tremblay, P. -E.
name: Parsons, S.
name: Marsh, T. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We computed Doppler beaming factors for DA, DB, and DBA white dwarf models, as well as for main sequence and giant stars covering the transmission curves of the Sloan, UBVRI, HiPERCAM, Kepler, TESS, and Gaia photometric systems. The calculations of the limb-darkening coefficients for 3D models were carried out using the least-squares method for these photometric systems. The beaming factor calculations, which use realistic models of stellar atmospheres, show that the black body approximation is not accurate, particularly for the filters $u$, $u'$, $U$, $g$, $g'$, and $B$. The black body approach is only valid for high effective temperatures and/or long effective wavelengths. Therefore, for more accurate analyses of light curves, we recommend the use of the beaming factors presented in this paper. Concerning limb-darkening, the distribution of specific intensities for 3D models indicates that, in general, these models are less bright toward the limb than their 1D counterparts, which implies steeper profiles. To describe these intensities better, we recommend the use of the four-term law (also for 1D models) given the level of precision that is being achieved with Earth-based instruments and space missions such as Kepler and TESS (and PLATO in the future).
description: Accepted Astronomy&Astrophysics