cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Forward Ray Tracing and Hot Spots in Kerr Spacetime
Creators: name: Zhou, Lihang
name: Zhong, Zhen
name: Chen, Yifan
name: Cardoso, Vitor
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Hotspots, often characterized as pointlike emissions, frequently appear near black holes with significantly enhanced luminosity compared to the surrounding accretion flow. Notably, such hotspots are regularly observed near the black hole at the center of the Milky Way. Light rays emitted from these sources follow complex trajectories around the black hole before reaching distinct locations on the observer's image plane. Precisely resolving both direct emissions and their higher-order images--despite the latter's intensity suppression--is essential for extracting detailed spacetime information, including the black hole's mass, spin, and inclination angle. To improve the accuracy and efficiency of hotspot modeling, we develop a forward ray tracing method based on the analytic integral solution of Kerr geodesics, leveraging conserved quantities. Our approach traces geodesics from a given emission point near the black hole to a distant observer, effectively capturing multiple images with a tailored parametrization scheme for root-finding. By perturbing these geodesics, we map finite-size emissions to distinct regions on the image plane, enabling the quantification of image shapes and amplification rates. This method not only enhances the identification of strongly lensed photons from black holes but also enables efficient spacetime tomography and hotspot localization, leveraging observations from the Event Horizon Telescope and its upcoming next-generation upgrades.
description: 26 pages, 11 figures; accepted version in PRD
A connection with parallel totally skew-symmetric torsion on a class of almost hypercomplex manifolds with Hermitian and anti-Hermitian metrics
Creators: name: Manev, Mancho
name: Gribachev, Kostadin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C26, 53C15, 53C50, 53C55

description: The subject of investigations are the almost hypercomplex manifolds with Hermitian and anti-Hermitian (Norden) metrics. A linear connection D is introduced such that the structure of these manifolds is parallel with respect to D and its torsion is totally skew-symmetric. The class of the nearly Kaehler manifolds with respect to the first almost complex structure is of special interest. It is proved that D has a D-parallel torsion and is weak if it is not flat. Some curvature properties of these manifolds are studied.
description: 18 pages
Coping is a collective responsibility : a narrative inquiry with women veterans on the barriers and facilitators of coping with military sexual trauma
Creators: name: Baugh, Leah
Publisher: name: University of British Columbia
Year: 2024

description: The military has failed to adequately address the sexism, sexual harassment, and sexual abuse that women veterans experience during service (Carson & Carson, 2018; Johnson et al., 2023; Zaleski, 2018). In the hypermasculine and hierarchical culture of the military (Shields et al., 2017), women service members are viewed as inferior to their male counterparts which perpetuates gender inequality (Kuhl et al., 2018). Women service members are frequently demeaned, betrayed, and sexually assaulted (Burkhart & Hogan, 2015; McCormack & Bennett, 2023; Mota et al., 2023). Given the limited research on military sexual trauma in the Canadian literature, the aim of the present study was to examine the barriers and facilitators of coping among women veterans (N=11) who experienced military sexual trauma during their years of service in the Canadian Armed Forces. An adaptation of Buchanan-Arvay’s (1998, 2003) collaborative narrative method was used to conduct in-depth narrative interviews and to construct a composite narrative account. Following a thematic analysis (Braun & Clarke, 2006, 2022) of the interview transcripts, five common themes were identified: (1) Military Culture; (2) Systemic Barriers to Coping; (3) Survival Strategies; (4) Social Support; (5) and Facilitators of Coping. Denoted throughout the findings are the minimal consequences for perpetrators and the inadequate support for women survivors of military sexual trauma. Illustrated in the women veterans’ composite narrative of coping, is the crucial need for social support and safety to move beyond survival strategies and towards meaningful facilitators of coping and recovery. A significant finding is that coping with military sexual trauma is not merely an individual task or concern, but a collective responsibility that requires systemic reform in military culture. Practical and clinical implications for military stakeholders, counselling psychology, and future research are discussed based on the women veterans’ recommendations and lived experiences.
Bipolar jets produced by a spectroscopic binary
Creators: name: Mundt, Reinhard
name: Hamilton, Catrina M.
name: Herbst, William
name: Johns-Krull, Christopher M.
name: Winn, Joshua N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present evidence that the spectroscopically identified bipolar jets of the pre-main sequence binary KH 15D are a common product of the whole binary system, rather than being launched from either star individually. They may be launched from the innermost part of the circumbinary disk (CBD) or may result from the merging of two outflows driven by the individual stars. This evidence is based on high-resolution H-alpha and [OI] 6300A line profiles obtained during eclipse phases of this nearly edge-on system. The occultation of star A (the only currently visible star) by the disk strongly suppresses the stellar H-alpha and continuum emission and allows one to study the faint redshifted and blueshifted emission components of the bipolar jets. The strongest evidence for jet production by the whole binary system comes from the observed radial velocity symmetry of the two jet components relative to the systemic velocity of the binary, in combination with current accretion models from the CBD onto a binary system.
description: ApJ Letters, in press [6 pages]
Protection of the national interests of Ukraine in the sphere of trade and economic coopeartion: legal foundations
Creators: name: Аrtuikhova Nadiia
Publisher: name: Colloquium-journal
Year: 2019
Subjects: legal regulation
normative and legal acts
trade and economic cooperation
national interests
national security
legislation

description: In the paper the legal foundations of the national interests’ protection in the sphere of trade and economic cooperation of Ukraine are studied; the content and structure of the current legislation in this sphere is analyzed; the need in its improvement is substantiated. The definition of the concept “legal regulation of the national interests’ protection in the sphere of trade and economic cooperation of Ukraine” is offered. The necessity of development and implementation of the Economic Security Strategy of Ukraine with a separate section devoted to the goals, priorities and tasks of the state policy in the sphere of trade and economic cooperation is proved.
Determination of Abrin by a Magnetic Affinity Immunoassay (MAIA) Based on the Signal Amplification of the Aptamer and Staphylococcal Protein A (SPA) Functionalized Gold Magnetic Microparticles (GMPs)
Creators: name: Mu, Xihui
name: Du, Bin
name: Liu, Houfang
name: Gao, Chuan
name: Liu, Zhiwei
name: Wang, Jiang
name: Liu, Shuai
name: Liu, Bing
name: Xu, Jianjie
name: Tong, Zhaoyang
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: A new magnetic affinity immunoassay (MAIA) was developed for the determination of abrin based on signal amplification of staphylococcal protein A (SPA) functionalized gold magnetic microparticles (GMPs) and the aptamer. This assay consisted of a sandwich format in which SPA-coated GMPs coupled anti-abrin monoclonal antibodies (mcAb) were used as the magnetic capture probe and the enzyme-labeled abrin aptamer was used as the signal probe. Abrin was successfully determined by the proposed strategy. This method exhibited a linear response to abrin from 0.031 to 31.25 μg/L with a detection limit of 0.031 μg/L. The staphylococcal protein A, gold magnetic microparticles, and aptamer increased the sensitivity by 4 times, 2 times and 2 times, respectively The integrated amplification produced by these parameters increased the sensitivity by 16-fold compared to the traditional double-antibody sandwich enzyme linked immunosorbent assay (ELISA). This method possesses a low detection limit, acceptable reproducibility, and high specificity, which demonstrates that the MAIA shows promise in trace toxin determination.
Tachyon warm inflationary universe model in the weak dissipative regime
Creators: name: del Campo, Sergio
name: Herrera, Ramon
name: Saavedra, Joel
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Warm inflationary universe model in a tachyon field theory is studied in the weak dissipative regime. We develop our model for an exponential potential and the dissipation parameter $Γ=Γ_0$=constant. We describe scalar and tensor perturbations for this scenario.
description: 9 pages, accepted by European Physical Journal C
title: La Feuille de l'Orme
title: Périodique officiel de la Commune de Morrens
titleType: Subtitle
title: La Feuille de l'Orme
titleType: AlternativeTitle
Creators: name: Municipalité De Morrens
Publisher: name: Municipalité de Morrens
Year: 0

description: En collaboration avec SODEMO, Société de développement Morrens-Orme.
Topological properties of the SU(3) random vortex world-surface model
Creators: name: Engelhardt, Michael
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The random vortex world-surface model is an infrared effective model of Yang-Mills dynamics based on center vortex degrees of freedom. These degrees of freedom carry topological charge through writhe and self-intersection of their world-surfaces. A practical implementation of the model realizes the vortex world-surfaces by composing them of elementary squares on a hypercubic lattice. The topological charge for specifically such configurations is constructed in the case of SU(3) color. This necessitates a proper treatment of vortex color structure at vortex branchings, a feature which is absent in the SU(2) color case investigated previously. On the basis of the construction, the topological susceptibility is evaluated in the random vortex world-surface ensemble, both in the confined low-temperature as well as in the deconfined high-temperature phase.
description: 5 pages, 1 figure; talk presented at the 8th Conference on Quark Confinement and the Hadron Spectrum: Confinement8, Mainz, Germany, 1-6 Sep 2008
Turbulent mixing controls fixation of growing antagonistic populations
Creators: name: Bauermann, Jonathan
name: Benzi, Roberto
name: Nelson, David R.
name: Shankar, Suraj
name: Toschi, Federico
Publisher: name: arXiv
Year: 2024
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Unlike coffee and cream that homogenize when stirred, growing micro-organisms (e.g., bacteria, baker's yeast) can actively kill each other and avoid mixing. How do such antagonistic interactions impact the growth and survival of competing strains, while being spatially advected by turbulent flows? By using numerical simulations of a continuum model, we study the dynamics of two antagonistic strains that are dispersed by incompressible turbulent flows in two spatial dimensions. A key parameter is the ratio of the fluid transport time to that of biological reproduction, which determines the winning strain that ultimately takes over the whole population from an initial heterogeneous state. By quantifying the probability and mean time for fixation along with the spatial structure of concentration fluctuations, we demonstrate how turbulence raises the threshold for biological nucleation and antagonism suppresses flow-induced mixing by depleting the population at interfaces. Our work highlights the unusual biological consequences of the interplay of turbulent fluid flows with antagonistic population dynamics, with potential implications for marine microbial ecology and origins of biological chirality.
description: 7 pages, 4 figures
Quantum quench dynamics of some exactly solvable models in one dimension
Creators: name: Iucci, A.
name: Cazalilla, M. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The dynamics of the Luttinger model and the sine-Gordon model (at the Luther-Emery point and in the semiclassical approximation) after a quantum quench is studied. We compute in detail one and two-point correlation functions for different types of quenches: from a non-interacting to an interacting Luttinger model and vice-versa, and from the gapped to the gapless phase of the sine-Gordon model and vice-versa. A progressive destruction of the Fermi gas features in the momentum distribution is found in the case of a quench into an interacting state in the Luttinger model. The critical exponents for spatial correlations are also found to be different from their equilibrium values. Correlations following a quench of the sine-Gordon model from the gapped to the gapless phase are found in agreement with the predictions of Calabrese and Cardy [Phys. Rev. Lett. {\bf 96} 136801 (2006)]. However, correlations following a quench from the gapped to the gapless phase at the Luther-Emery and the semi-classical limit exhibit a somewhat different behavior, which may indicate a break-down of the semiclassical approximation or a qualitative change in the behavior of correlations as one moves away from the Luther-Emergy point. In all cases, we find that the correlations at infinite times after the quench are well described by a generalized Gibbs ensemble [M. Rigol \emph{et al.} Phys. Rev. Lett. {\bf 98}, 050405 (2007)], which assigns a momentum dependent temperature to each eigenmode.
description: 24 pages + 3 figures; typos corrected and references added
Optimal Time Decay of the Vlasov-Poisson-Boltzmann System in ${\mathbb{R}}^3$
Creators: name: Duan, Renjun
name: Strain, Robert M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 82B40, 35B40

description: The Vlasov-Poisson-Boltzmann System governs the time evolution of the distribution function for the dilute charged particles in the presence of a self-consistent electric potential force through the Poisson equation. In this paper, we are concerned with the rate of convergence of solutions to equilibrium for this system over ${\mathbb{R}}^3$. It is shown that the electric field which is indeed responsible for the lowest-order part in the energy space reduces the speed of convergence and hence the dispersion of this system over the full space is slower than that of the Boltzmann equation without forces, where the exact difference between both power indices in the algebraic rates of convergence is 1/4. For the proof, in the linearized case with a given non-homogeneous source, Fourier analysis is employed to obtain time-decay properties of the solution operator. In the nonlinear case, the combination of the linearized results and the nonlinear energy estimates with the help of the proper Lyapunov-type inequalities leads to the optimal time-decay rate of perturbed solutions under some conditions on initial data.
description: 37 pages
PRINCIPLES FOR THE PROVISION OF RETAIL SERVICES IN COMMERCIAL BANKS OF UZBEKISTAN
Creators: name: Master's student at Tashkent State Economic University Nisanbayeva Janar Maxsetovna
name: Master's student at Tashkent State Economic University Nisanbayeva Janar Maxsetovna
Publisher: name: Zenodo
Year: 2023

description: This article examines the theoretical and legal foundations of retail services in commercial banks, ensuring the competitiveness of banks, analyzes the banking services provided to the population in banks, and develops recommendations.
Key words: banking services, banking infrastructure, banking product, remote banking, Internet banking, mobile banking.
De gente Valeria – Eine patrizische Familie in der Römischen Republik
Creators: name: Lukas, Florian
Publisher: name: Zenodo
Year: 2019

description: Thesis for the degree of Master of Arts in History and Archaeology, submitted to the University of Cologne in January 2019. The content of the thesis deals with the political culture of the Roman Republic and in particular the corporate identity of one of the oldest noble families - the gens Valeria. It examines the representation of the family members as well as the reception of their deeds by the public of the time against the background of the political rules of the Roman Republic. The central question is whether the stereotyped image of the gens that has been preserved is a late construction resulting from the political power struggle or whether it is actually based on deeds from the early period of the Republic, which are difficult to verify in terms of sources.
Design optimization of parallel manipulators for high-speed precision machining applications
Creators: name: Pashkevich, Anatoly
name: Chablat, Damien
name: Wenger, Philippe
Publisher: name: arXiv
Year: 2009
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The paper proposes an integrated approach to the design optimization of parallel manipulators, which is based on the concept of the workspace grid and utilizes the goal-attainment formulation for the global optimization. To combine the non-homogenous design specification, the developed optimization technique transforms all constraints and objectives into similar performance indices related to the maximum size of the prescribed shape workspace. This transformation is based on the dedicated dynamic programming procedures that satisfy computational requirements of modern CAD. Efficiency of the developed technique is demonstrated via two case studies that deal with optimization of the kinematical and stiffness performances for parallel manipulators of the Orthoglide family.
Evaluating the Accuracy of the Labeling System in Web of Science for the Sustainable Development Goals
Creators: name: Zhao, Yu
name: Li, Li
name: Shen, Zhesi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Monitoring and fostering research aligned with the Sustainable Development Goals (SDGs) is crucial for formulating evidence-based policies, identifying best practices, and promoting global collaboration. The key step is developing a labeling system to map research publications to their related SDGs. The SDGs labeling system integrated in Web of Science (WoS), which assigns citation topics instead of individual publication to SDGs, has emerged as a promising tool.However we still lack of a comprehensive evaluation of the performance of WoS labeling system. By comparing with the Bergon approach, we systematically assessed the relatedness between citation topics and SDGs. Our analysis identified 15% of topics showing low relatedness to their assigned SDGs at a 1% threshold. Notably, SDGs such as '11 Cities', '07 Energy', and '13 Climate' exhibited higher percentages of low related topics. In addition, we revealed that certain topics are significantly underrepresented in their relevant SDGs, particularly for '02 Hunger', '12 Consumption', and '15 Land'. This study underscores the critical need for continual refinement and validation of SDGs labeling systems in WoS.
The evolutionary status of the blue hook stars in Omega Centauri
Creators: name: D'Antona, Francesca
name: Caloi, Vittoria
name: Ventura, Paolo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Core helium burning is the dominant source of energy of extreme horizontal branch stars, as the hydrogen envelope is too small to contribute to the nuclear energy output. The evolution of each mass in the HR diagram occurs along vertical tracks that, when the core helium is consumed, evolve to higher Teff and then to the white dwarf stage. The larger is the mass, the smaller is the Teff of the models, so that the zero age horizontal branch (ZAHB) is "horizontal". In this paper we show that, if the helium mass fraction (Y) of the envelope is larger than Y~0.5, the shape of the tracks changes completely: the hydrogen burning becomes efficient again also for very small envelope masses, thanks to the higher molecular weight and to the higher temperatures of the hydrogen shell. The larger is Y, the smaller is the envelope mass that provides strong H-shell burning. These tracks have a curled shape, are located at a Teff following the approximate relation Teff=8090+ 32900xY, and become more luminous for larger envelope masses. Consequently, the ZAHB of the very high helium models is "vertical" in the HR diagram. Synthetic models based on these tracks nicely reproduce the location and shape of the "blue hook" in the globular cluster wCen, best fit by a very high Teff (bluer) sequence with Y=0.80 and a cooler (redder) one with Y=0.65. Although these precise values of Y may depend on the color-Teff conversions, we know that the helium content of the progenitors of the blue hook stars can not be larger than Y~0.38-0.40, if they are descendants of the cluster blue main sequence. Consequently, this interpretation implies that all these objects must in fact be progeny of the blue main sequence, but they have all suffered further deep mixing, that has largely and uniformly increased their surface helium abundance, during the red giant branch evolution. A late helium flash can not be the cause of this deep mixing, as the models we propose have hydrogen rich envelopes much more massive than those required for a late flash. We discuss different models of deep mixing proposed in the literature, and conclude that our interpretation of the blue hook can not be ruled out, but requires a much deeper investigation before it can be accepted.
description: in press on MNRAS
Nonequilibrium regimes for quasiparticles in superconducting qubits
Creators: name: Marchegiani, G.
name: Catelani, G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Qubits with gap asymmetry larger than their transition energy are less susceptible to quasiparticle decoherence as the quasiparticles are mostly trapped in the low-gap side of the junction. Because of this trapping, the gap asymmetry can contribute to maintaining the quasiparticles out of equilibrium. Here we address the temperature evolution of the quasiparticle densities in the two sides of the junction. We show that four qualitatively different regimes are possible with increasing temperature: i) nonequilibrium, ii) local quasiequilibrium, iii) global quasiequilibrium, and iv) full equilibrium. We identify shortcomings in assuming global quasiequilibrium when interpreting experimental data, highlighting how measurements in the presence of magnetic field can aid the accurate determination of the junction parameters, and hence the identification of the nonequilibrium regimes.
description: 24 pages, 8 figures
Hierarchical structures in the Large and Small Magellanic Clouds
Creators: name: Bonatto, Charles
name: Bica, Eduardo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the degree of spatial correlation among extended structures in the LMC and SMC. To this purpose we work with sub-samples characterised by different properties such as age and size, taken from the updated catalogue of Bica et al. or gathered in the present work. The structures are classified as star clusters or non-clusters (basically, nebular complexes and their stellar associations). The radius distribution functions follow power-laws ($dN/dR\propto R^{-α}$) with slopes and maximum radius ($R_{max}$) that depend on object class (and age). Non-clusters are characterised by $α\approx1.9$ and $R_{max}\la472$ pc, while young clusters (age $\la10$ Myr) have $α\approx3.6$ and $R_{max}\la15$ pc, and old ones (age $\ga600$ Myr) have $α\approx2.5$ and $R_{max}\la40$ pc. Young clusters present a high degree of spatial self-correlation and, especially, correlate with star-forming structures, which does not occur with the old ones. This is consistent with the old clusters having been heavily mixed up, since their ages correspond to several LMC and SMC crossing times. On the other hand, with ages corresponding to fractions of the respective crossing times, the young clusters still trace most of their birthplace structural pattern. Also, small clusters ($R<10$ pc), as well as small non-clusters ($R<100$ pc), are spatially self-correlated, while their large counterparts of both classes are not. The above results are consistent with a hierarchical star-formation scenario for the LMC and SMC.
description: Accepted by MNRAS
Five Problems in Quantum Gravity
Creators: name: Strominger, Andrew
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present five open problems in quantum gravity which one might reasonably hope to solve in the next decade. Hints appearing in the literature are summarized for each one.
description: 11 pages, based on lectures given at the 2008 Cargese Summer School and to appear in the proceedings
title: Punto de encuentro
title: Resturar la salud de la tierras para una agricultura sostenible
titleType: Subtitle
title: Punto de encuentro
titleType: AlternativeTitle
Creators: name: Larbodière, Ludovic
name: Davies, Jonathan
name: Schmidt, Ruth
name: Union Internationale Pour La Conservation De La Nature Et De Ses Ressources
Publisher: name: Union internationale pour la conservation de la nature
Year: 2020

description: Autres auteurs : Magero, Chris Vidal, Alain Arroyo Schnell, Antonio Bucher, Peter Maginnis, Stewart Cox, Neil Hasinger, Olivier Abhilash, P.C. Conner, Nicholas Westerberg, Vanja Costa, Luis
The two-impurity Kondo model with spin-orbit interactions
Creators: name: Mross, David F.
name: Johannesson, Henrik
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the two-impurity Kondo model (TIKM) in two dimensions with spin-orbit coupled conduction electrons. In the first part of the paper we analyze how spin-orbit interactions of Rashba as well as Dresselhaus type influence the Kondo and RKKY interactions in the TIKM, generalizing results obtained by H. Imamura {\em et al.} (2004) and J. Malecki (2007). Using our findings we then explore the effect from spin-orbit interactions on the non-Fermi liquid quantum critical transition between the RKKY-singlet and Kondo-screened RKKY-triplet states. We argue that spin-orbit interactions under certain conditions produce a line of critical points exhibiting the same leading scaling behavior as that of the ordinary TIKM. In the second part of the paper we shift focus and turn to the question of how spin-orbit interactions affect the entanglement between two localized RKKY-coupled spins in the parameter regime where the competition from the direct Kondo interaction can be neglected. Using data for a device with two spinful quantum dots patterned in a gated InAs heterostructure we show that a gate-controlled spin-orbit interaction may drive a maximally entangled state to one with vanishing entanglement, or vice versa (as measured by the concurrence). This has important implications for proposals using RKKY interactions for nonlocal control of qubit entanglement in semiconductor heterostructures.
description: Revised version; new title and introduction in response to referee suggestion, expanded discussion of results, added references. 14 pages, 5 figures
Nonequilibrium Dynamics in Noncommutative Spacetime
Creators: name: Chu, Chong-Sun
name: Ho, Chiu Man
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effects of spacetime noncommutativity on the nonequilibrium dynamics of particles in a thermal bath. We show that the noncommutative thermal bath does not suffer from any further IR/UV mixing problem in the sense that all the finite-temperature non-planar quantities are free from infrared singularities. We also point out that the combined effect of finite temperature and noncommutative geometry has a distinct effect on the nonequilibrium dynamics of particles propagating in a thermal bath: depending on the momentum of the mode of concern, noncommutative geometry may switch on or switch off their decay and thermalization. This momentum dependent alternation of the decay and thermalization rates could have significant impacts on the nonequilibrium phenomena in the early universe at which spacetime noncommutativity may be present. Our results suggest a re-examination of some of the important processes in the early universe such as reheating after inflation, baryogenesis and the freeze-out of superheavy dark matter candidates.
description: 24 pages, 2 figures
WAYS TO INCREASE THE POPULARITY OF RETAIL SERVICES IN BANKS OF UZBEKISTAN
Creators: name: Master's student at Tashkent State Economic University Nisanbayeva Janar Maxsetovna
Publisher: name: Zenodo
Year: 2023

description: The article explores the scientific and theoretical foundations of retail banking services, studies the practice of their development in developed foreign practice. Also, based on the importance of information technology in the development of retail services, the possibilities of their widespread use were considered.
Keywords: retail banking, remote banking services, deposit, internet banking, mobile banking, client bank, online banking.
Self-consistent ac quantum transport using nonequilibrium Green functions
Creators: name: Kienle, Diego
name: Vaidyanathan, Mani
name: Léonard, François
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We develop an approach for self-consistent ac quantum transport in the presence of time-dependent potentials at non-transport terminals. We apply the approach to calculate the high-frequency characteristics of a nanotube transistor with the ac signal applied at the gate terminal. We show that the self-consistent feedback between the ac charge and potential is essential to properly capture the transport properties of the system. In the on-state, this feedback leads to the excitation of plasmons, which appear as pronounced divergent peaks in the dynamic conductance at terahertz frequencies. In the off-state, these collective features vanish, and the conductance exhibits smooth oscillations, a signature of single-particle excitations. The proposed approach is general and will allow the study of the high-frequency characteristics of many other low-dimensional nanoscale materials such as nanowires and graphene-based systems, which are attractive for terahertz devices, including those that exploit plasmonic excitations.
description: 11 pages, 5 figures, accepted in Physical Review B
FBD-SV-2024: Flying Bird Object Detection Dataset in Surveillance Video
Creators: name: Sun, Zi-Wei
name: Hua, Ze-Xi
name: Li, Heng-Chao
name: Qi, Zhi-Peng
name: Li, Xiang
name: Li, Yan
name: Zhang, Jin-Chi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: A Flying Bird Dataset for Surveillance Videos (FBD-SV-2024) is introduced and tailored for the development and performance evaluation of flying bird detection algorithms in surveillance videos. This dataset comprises 483 video clips, amounting to 28,694 frames in total. Among them, 23,833 frames contain 28,366 instances of flying birds. The proposed dataset of flying birds in surveillance videos is collected from realistic surveillance scenarios, where the birds exhibit characteristics such as inconspicuous features in single frames (in some instances), generally small sizes, and shape variability during flight. These attributes pose challenges that need to be addressed when developing flying bird detection methods for surveillance videos. Finally, advanced (video) object detection algorithms were selected for experimentation on the proposed dataset, and the results demonstrated that this dataset remains challenging for the algorithms above. The FBD-SV-2024 is now publicly available: Please visit https://github.com/Ziwei89/FBD-SV-2024_github for the dataset download link and related processing scripts.
Prediction of rifampicin resistance beyond the RRDR using structure-based machine learning approaches
Creators: name: Portelli, Stephanie
name: Myung, Yoochan
name: Furnham, Nicholas
name: Vedithi, Sundeep Chaitanya
name: Pires, Douglas E. V.
name: Ascher, David B.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Article
/631/114/2397
/631/114/663
article

description: Funder: Medical Research Council; doi: http://dx.doi.org/10.13039/501100000265
description: Funder: National Health and Medical Research Council; doi: http://dx.doi.org/10.13039/501100000925
description: Abstract: Rifampicin resistance is a major therapeutic challenge, particularly in tuberculosis, leprosy, P. aeruginosa and S. aureus infections, where it develops via missense mutations in gene rpoB. Previously we have highlighted that these mutations reduce protein affinities within the RNA polymerase complex, subsequently reducing nucleic acid affinity. Here, we have used these insights to develop a computational rifampicin resistance predictor capable of identifying resistant mutations even outside the well-defined rifampicin resistance determining region (RRDR), using clinical M. tuberculosis sequencing information. Our tool successfully identified up to 90.9% of M. tuberculosis rpoB variants correctly, with sensitivity of 92.2%, specificity of 83.6% and MCC of 0.69, outperforming the current gold-standard GeneXpert-MTB/RIF. We show our model can be translated to other clinically relevant organisms: M. leprae, P. aeruginosa and S. aureus, despite weak sequence identity. Our method was implemented as an interactive tool, SUSPECT-RIF (StrUctural Susceptibility PrEdiCTion for RIFampicin), freely available at https://biosig.unimelb.edu.au/suspect_rif/.
Markov Chain Monte Carlo on Asymmetric GARCH Model Using the Adaptive Construction Scheme
Creators: name: Takaishi, Tetsuya
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business

description: We perform Markov chain Monte Carlo simulations for a Bayesian inference of the GJR-GARCH model which is one of asymmetric GARCH models. The adaptive construction scheme is used for the construction of the proposal density in the Metropolis-Hastings algorithm and the parameters of the proposal density are determined adaptively by using the data sampled by the Markov chain Monte Carlo simulation. We study the performance of the scheme with the artificial GJR-GARCH data. We find that the adaptive construction scheme samples GJR-GARCH parameters effectively and conclude that the Metropolis-Hastings algorithm with the adaptive construction scheme is an efficient method to the Bayesian inference of the GJR-GARCH model.
description: 10 pages, 5 figures
Modeling phase behavior for quantifying micro-pervaporation experiments
Creators: name: Schindler, Michael
name: Ajdari, Armand
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a theoretical model for the evolution of mixture concentrations in a micro-pervaporation device, similar to those recently presented experimentally. The described device makes use of the pervaporation of water through a thin PDMS membrane to build up a solute concentration profile inside a long microfluidic channel. We simplify the evolution of this profile in binary mixtures to a one-dimensional model which comprises two concentration-dependent coefficients. The model then provides a link between directly accessible experimental observations, such as the widths of dense phases or their growth velocity, and the underlying chemical potentials and phenomenological coefficients. It shall thus be useful for quantifying the thermodynamic and dynamic properties of dilute and dense binary mixtures.
description: to be published in EPJ-E
Seismic damage assessment for balloon-type shear wall timber structures
Creators: name: Ferdosi, Ehsan
Publisher: name: University of British Columbia
Year: 2024

description: This research provides a damage assessment for balloon-type CLT shear wall systems in two different seismic hazard levels. Engineered Wood Products are growing heavily in large and tall structural applications due to their high strength-to-weight ratio, versatility for prefabrication, and carbon and energy efficiency. However, for more widespread adoption, more comprehensive assessments are required to address all sensitive aspects of using this material. For instance, the performance of the structures that utilize heavy or mass timber products in their Seismic Force Resistant Systems (SFRS) in seismic-prone areas is still widely unknown. In addition, with the new seismic performance measures, like seismic resilience, more effort is needed to assess the seismic performance of engineered timber structures. This study focuses on damage assessment for engineered timber structures after a seismic event as a significant contributor to seismic resilience. In this regard, the performance of a conventional timber-based structural system and a more resilient hybrid option are compared in terms of the damage state in the structural elements. A cantilevered balloon-type CLT shear wall system with dowel-type hold-downs represents the conventional construction practice. In contrast, a coupled CLT shear wall system with link beams and the same hold-downs represents the hybrid option. For comparison, 10-story archetypes are designed and modelled for each structural system. Afterward, probabilistic seismic performance evaluation for each structural system is performed at two hazard levels, one representing a Magnitude 9.0 shaking in the Cascadia Subduction Zone and the other representing the design earthquake in the Canadian Building Code. The analysis considered uncertainty in the hazard source, structural performance, and occurrence of the damage. The results showed that the elements of the coupled system sustained far less damage than the cantilevered system, demonstrating the effectiveness of the resilient solutions. Additionally, the study confirms that reducing damage in connections leads to achieving more resilience in timber-based structures. Overall, this study provides important insights into the seismic performance of timber-based structures in seismic-prone areas and highlights the need for further research.
The flashfm approach for fine-mapping multiple quantitative traits
Creators: name: Hernández, N.
name: Soenksen, J.
name: Newcombe, P.
name: Sandhu, M.
name: Barroso, I.
name: Wallace, C.
name: Asimit, J. L.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/631/208/205/2138
/631/208/480
/45/43
/141
/139
article

description: Funder: “Expanding excellence in England” award from Research England
description: Abstract: Joint fine-mapping that leverages information between quantitative traits could improve accuracy and resolution over single-trait fine-mapping. Using summary statistics, flashfm (flexible and shared information fine-mapping) fine-maps signals for multiple traits, allowing for missing trait measurements and use of related individuals. In a Bayesian framework, prior model probabilities are formulated to favour model combinations that share causal variants to capitalise on information between traits. Simulation studies demonstrate that both approaches produce broadly equivalent results when traits have no shared causal variants. When traits share at least one causal variant, flashfm reduces the number of potential causal variants by 30% compared with single-trait fine-mapping. In a Ugandan cohort with 33 cardiometabolic traits, flashfm gave a 20% reduction in the total number of potential causal variants from single-trait fine-mapping. Here we show flashfm is computationally efficient and can easily be deployed across publicly available summary statistics for signals in up to six traits.
Large scale bias and the inaccuracy of the peak-background split
Creators: name: Manera, Marc
name: Sheth, Ravi K
name: Scoccimarro, Roman
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The peak-background split argument is commonly used to relate the abundance of dark matter halos to their spatial clustering. Testing this argument requires an accurate determination of the halo mass function. We present a Maximum Likelihood method for fitting parametric functional forms to halo abundances which differs from previous work because it does not require binned counts. Our conclusions do not depend on whether we use our method or more conventional ones. In addition, halo abundances depend on how halos are defined. Our conclusions do not depend on the choice of link length associated with the friends-of-friends halo-finder, nor do they change if we identify halos using a spherical overdensity algorithm instead. The large scale halo bias measured from the matter-halo cross spectrum b_x and the halo autocorrelation function b_xi (on scales k~0.03h/Mpc and r ~50 Mpc/h) can differ by as much as 5% for halos that are significantly more massive than the characteristic mass M*. At these large masses, the peak background split estimate of the linear bias factor b1 is 3-5% smaller than b_xi, which is 5% smaller than b_x. We discuss the origin of these discrepancies: deterministic nonlinear local bias, with parameters determined by the peak-background split argument, is unable to account for the discrepancies we see. A simple linear but nonlocal bias model, motivated by peaks theory, may also be difficult to reconcile with our measurements. More work on such nonlocal bias models may be needed to understand the nature of halo bias at this level of precision.
description: MNRAS accepted. New section with Spherical Overdensity identified halos included. Appendix enlarged
Global and regional aggregate damages associated with global warming of 1.5 to 4 °C above pre-industrial levels
Creators: name: Warren, R.
name: Hope, C.
name: Gernaat, D. E. H. J.
name: Van Vuuren, D. P.
name: Jenkins, K.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
Accrual of Climate Change Risk in Six Vulnerable Countries
Climate change
Economic damages
Risk
Aggregate damages
Integrated assessment model

description: Abstract: We quantify global and regional aggregate damages from global warming of 1.5 to 4 °C above pre-industrial levels using a well-established integrated assessment model, PAGE09. We find mean global aggregate damages in 2100 of 0.29% of GDP if global warming is limited to about 1.5 °C (90% confidence interval 0.09–0.60%) and 0.40% for 2 °C (range 0.12–0.91%). These are, respectively, 92% and 89% lower than mean losses of 3.67% of GDP (range 0.64–10.77%) associated with global warming of 4 °C. The net present value of global aggregate damages for the 2008–2200 period is estimated at $48.7 trillion for ~ 1.5 °C global warming (range $13–108 trillion) and $60.7 trillion for 2 °C (range $15–140 trillion). These are, respectively, 92% and 90% lower than the mean NPV of $591.7 trillion of GDP for 4 °C warming (range $70–1920 trillion). This leads to a mean social cost of CO2 emitted in 2020 of ~ $150 for 4 °C warming as compared to $30 at ~ 1.5 °C warming. The benefits of limiting warming to 1.5 °C rather than 2 °C might be underestimated since PAGE09 is not recalibrated to reflect the recent understanding of the full range of risks at 1.5 °C warming.
title: Protected Areas Benefits Assessment Tool + (PA-BAT+)
title: A tool to assess local stakeholder perceptions of the flow of benefits form protected areas
titleType: Subtitle
title: Protected Areas Benefits Assessment Tool + (PA-BAT+)
titleType: AlternativeTitle
Creators: name: Ivanić, Kasandra-Zorica
name: Stolton, Sue
name: Figueroa Arango Carolina
name: Union Internationale Pour La Conservation De La Nature Et De Ses Ressources
Publisher: name: Union internationale pour la conservation de la nature
Year: 2020

description: Autre auteur : Dudley, Nigel
Well-Being and Pluralism
Creators: name: Mitchell, Polly
name: Alexandrova, Anna
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: subject: Research Paper
subject: Well-being
subject: Pluralism
subject: Measurement
subject: Methodology
subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: Funder: King's College London
description: Abstract: It is a commonly expressed sentiment that the science and philosophy of well-being would do well to learn from each other. Typically such calls identify mistakes and bad practices on both sides that would be remedied if scientists picked the right bit of philosophy and philosophers picked the right bit of science. We argue that the differences between philosophers and scientists thinking about well-being are more difficult to reconcile than such calls suggest, and that pluralism is central to this task. Pluralism is a stance that explicitly drives towards accommodating and nurturing the richness and diversity of well-being, both as a concept and as an object of inquiry. We show that well-being science manifests a contingent pluralism at the level of methodology, whereas philosophy of well-being has largely rejected pluralism at the conceptual level. Recently, things have begun to change. Within philosophy, conceptual monism is under attack. But so is methodological pluralism within science. We welcome the first development, and bemoan the second. We argue that a joined-up philosophy and science of well-being should recognise the virtues of both conceptual and methodological pluralism. Philosophers should embrace the methodological justification of pluralism that can be found in the well-being sciences, and scientists should embrace the conceptual reasons to be pluralist that can be found in philosophical debate.