cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Current-induced forces in single-resonance systems
Creators: name: Deghi, Sebastián E.
name: Fernández-Alcázar, Lucas J.
name: Pastawski, Horacio M.
name: Bustos-Marún, Raúl A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In recent years, there has been an increasing interest in nanoelectromechanical devices, current-driven quantum machines, and the mechanical effects of electric currents on nanoscale conductors. Here, we carry out a thorough study of the current-induced forces and the electronic friction of systems whose electronic effective Hamiltonian can be described by an archetypal model, a single energy level coupled to two reservoirs. Our results can help better understand the general conditions that maximize the performance of different devices modeled as a quantum dot coupled to two electronic reservoirs. Additionally, they can be useful to rationalize the role of current-induced forces in the mechanical deformation of one-dimensional conductors.
Eryx conicus
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Boidae
Eryx
Eryx conicus

description: Eryx conicus (Schneider 1801):
This species was encountered at Amlekhgunj-Hattisar (Fig. 20).
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 42, DOI: 10.5281/zenodo.11390169
Theory of the in-plane anisotropy of magnetic excitations in YBa_{2}Cu_{3}O_{6+y}
Creators: name: Yamase, Hiroyuki
name: Metzner, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A pronounced xy-anisotropy was observed in recent neutron scattering experiments for magnetic excitations in untwinned YBa_{2}Cu_{3}O_{6+y} (YBCO). The small anisotropy of the bare band structure due to the orthorhombic crystal symmetry seems to be enhanced by correlation effects. A natural possibility is that the system is close to a Pomeranchuk instability associated with a d-wave Fermi surface deformation (dFSD). We investigate this possibility in the bilayer t-J model within a self-consistent slave-boson mean-field theory. We show that the dFSD correlations drive a pronounced xy-anisotropy of magnetic excitations at low doping and at relatively high temperatures, providing a scenario for the observed xy-anisotropy in optimally doped as well as underdoped YBCO, including the pseudogap phase.
description: magnetic excitations in the even channel for YBCO are presented; the proceedings of the M2S-HTSC VIII conference
Chrysopelea ornata
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Colubridae
Chrysopelea
Chrysopelea ornata

description: Chrysopelea ornata (Shaw 1802):
A juvenile individual was observed at Shikaribas Khola, and a dead specimen was found at Amlekhgunj-Hattisar (Fig. 23). This is the first record from Parsa National Park.
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 43, DOI: 10.5281/zenodo.11390169
Maximizing power and velocity of an information engine
Creators: name: Saha, Tushar K.
name: Lucero, Joseph N. E.
name: Ehrich, Jannik
name: Sivak, David A.
name: Bechhoefer, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Information-driven engines that rectify thermal fluctuations are a modern realization of the Maxwell-demon thought experiment. We introduce a simple design based on a heavy colloidal particle, held by an optical trap and immersed in water. Using a carefully designed feedback loop, our experimental realization of an "information ratchet" takes advantage of favorable "up" fluctuations to lift a weight against gravity, storing potential energy without doing external work. By optimizing the ratchet design for performance via a simple theory, we find that the rate of work storage and velocity of directed motion is limited only by the physical parameters of the engine: the size of the particle, stiffness of the ratchet spring, friction produced by the motion, and temperature of the surrounding medium. Notably, because performance saturates with increasing frequency of observations, the measurement process is not a limiting factor. The extracted power and velocity are at least an order of magnitude higher than in previously reported engines.
description: 16 pages, 12 figures
Elicitation - binding and word order
Creators: name: Sampi Ríos, Celia
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Celia Sampi Ríos. Topics covered include phonological alternations based on metrical structure, binding, word order, and negation in questions.
Ahaetulla nasuta
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Colubridae
Ahaetulla
Ahaetulla nasuta

description: Ahaetulla nasuta (Bonnaterre 1790):
An individual of this species was observed at Mahadev Khola basking on grasses and flew to the bush when approached. Another individual was observed at Shitalpur on a Mallotus philippensis tree approximately 3. 5 m from ground level. We report this species for the first time from the park.
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 43, DOI: 10.5281/zenodo.11390169
Planetesimal and gas dynamics in binaries
Creators: name: Paardekooper, S. -J.
name: Thebault, P.
name: Mellema, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations of extrasolar planets reveal that planets can be found in close binary systems, where the semi-major axis of the binary orbit is less than 20 AU. The existence of these planets challenges planet formation theory, because the strong gravitational perturbations due to the companion increase encounter velocities between planetesimals and make it difficult for them to grow through accreting collisions. We study planetesimal encounter velocities in binary systems, where the planetesimals are embedded in a circumprimary gas disc that is allowed to evolve under influence of the gravitational perturbations of the companion star. We find that the encounter velocities between planetesimals of different size strongly depend on the gas disc eccentricity. In all cases studied, inclusion of the full gas dynamics increases the encounter velocity compared to the case of a static, circular gas disc. Full numerical parameter exploration is still impossible, but we derive analytical formulae to estimate encounter velocities between bodies of different sizes given the gas disc eccentricity. The gas dynamical evolution of a protoplanetary disc in a binary system tends to make planetesimal accretion even more difficult than in a static, axisymmetric gas disc.
description: 18 pages, 13 figures, accepted for publication in MNRAS
Robust Finite Mixture Regression for Heterogeneous Targets
Creators: name: Liang, Jian
name: Chen, Kun
name: Lin, Ming
name: Zhang, Changshui
name: Wang, Fei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Finite Mixture Regression (FMR) refers to the mixture modeling scheme which learns multiple regression models from the training data set. Each of them is in charge of a subset. FMR is an effective scheme for handling sample heterogeneity, where a single regression model is not enough for capturing the complexities of the conditional distribution of the observed samples given the features. In this paper, we propose an FMR model that 1) finds sample clusters and jointly models multiple incomplete mixed-type targets simultaneously, 2) achieves shared feature selection among tasks and cluster components, and 3) detects anomaly tasks or clustered structure among tasks, and accommodates outlier samples. We provide non-asymptotic oracle performance bounds for our model under a high-dimensional learning framework. The proposed model is evaluated on both synthetic and real-world data sets. The results show that our model can achieve state-of-the-art performance.
Slave bosons in radial gauge: a bridge between path integral and hamiltonian language
Creators: name: Fresard, Raymond
name: Ouerdane, Henni
name: Kopp, Thilo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We establish a correspondence between the resummation of world lines and the diagonalization of the Hamiltonian for a strongly correlated electronic system. For this purpose, we analyze the functional integrals for the partition function and the correlation functions invoking a slave boson representation in the radial gauge. We show in the spinless case that the Green's function of the physical electron and the projected Green's function of the pseudofermion coincide. Correlation and Green's functions in the spinful case involve a complex entanglement of the world lines which, however, can be obtained through a strikingly simple extension of the spinless scheme. As a toy model we investigate the two-site cluster of the single impurity Anderson model which yields analytical results. All expectation values and dynamical correlation functions are obtained from the exact calculation of the relevant functional integrals. The hole density, the hole auto-correlation function and the Green's function are computed, and a comparison between spinless and spin 1/2 systems provides insight into the role of the radial slave boson field. In particular, the exact expectation value of the radial slave boson field is finite in both cases, and it is not related to a Bose condensate.
description: 28 pages, 1 figure. Summary extended, corrected typos, added references
การพัฒนาพิพิธภัณฑ์ท้องถิ่นเพื่อส่งเสริมการศึกษาเชิงสร้างสรรค์พิพิธภัณฑ์เมืองมหาสารคาม จังหวัดมหาสารคาม
Creators: name: กิตติกรณ์ บำรุงบุญ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: พิพิธภัณฑ์, การศึกษาเชิงสร้างสรรค์, ประติมากรรม

description: 4, 34, วารสารมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยมหาสารคาม
ผลกระทบของความโปร่งใสในการปฏิบัติงานทางการบัญชีที่มีต่อคุณภาพรายงานทางการเงินของเทศบาลในเขตภาคตะวันออกเฉียงเหนือ
Creators: name: คัทลียา ลาศรีทัศน์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ความโปร่งใสในการปฏิบัติงานทางการบัญชี, คุณภาพรายงานทางการเงิน, เทศบาลในเขตภาคตะวันออกเฉียงเหนือ

description: 4, 34, วารสารมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยมหาสารคาม
Lycodon aulicus
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Colubridae
Lycodon
Lycodon aulicus

description: Lycodon aulicus (Linnaeus 1758):
Observed at NTNC-Parsa Conservation Program Office complex, and dead individuals were found at Amlekhgunj-Hattisar. A basking individual was frequently observed in a crevice of a cemented water tank (Fig. 25). This is the first record from Parsa National Park.
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 44, DOI: 10.5281/zenodo.11390169
Oligodon arnensis
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Colubridae
Oligodon
Oligodon arnensis

description: Oligodon arnensis (Shaw 1802):
Observed from Amlekhgunj-Hattisar and NTNC-Parsa Conservation Office Complex (Fig. 27). This species is also frequently observed in Chitwan National Park.
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 44, DOI: 10.5281/zenodo.11390169
Theory of shock electrodialysis I: Water dissociation and electrosmotic vortices
Creators: name: Tian, Huanhuan
name: Alkhadra, Mohammad A.
name: Bazant, Martin Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Shock electrodialysis (shock ED), an emerging electrokinetic process for water purification, leverages the new physics of deionization shock waves in porous media. In previous work, a simple leaky membrane model with surface conduction can explain the propagation of deionization shocks in a shock ED system, but it cannot quantitatively predict the deionization and conductance (which determines the energy consumption), and it cannot explain the selective removal of ions in experiments. This two-part series of work establishes a more comprehensive model for shock ED, which applies to multicomponent electrolytes and any electrical double layer thickness, captures the phenomena of electroosmosis, diffusioosmosis, and water dissociation, and incorporates more realistic boundary conditions. In this paper, we will present the model details and show that hydronium transport and electroosmotic vortices (at the inlet and outlet) play important roles in determining the deionization and conductance in shock ED. We also find that the results are quantitatively consistent with experimental data in the literature. Finally, the model is used to investigate design strategies for scale up and optimization.
遗传性耳聋家系PLS1 c.981 G>A新突变导致mRNA剪切异常的机制研究
Creators: name: 姚鹏程(Pengcheng Yao)
Publisher: name: CNGB
Year: 2022
Subjects: Variation
Multiisolate
Medical

description: 一遗传性耳聋家系的WES测序的变异数据，包括12个健康人和5个耳聋患者
Sill mat design for narrow vein mining
Creators: name: Marcinyshyn, Kennth William
Publisher: name: University of British Columbia
Year: 2009

description: The crux of sill mat design is the estimation of vertical stress before sill mat failure. Current theories for estimating vertical pressure in rock and soils at shallow depths all produce a variety of answers. The current theories for estimating vertical stress do not account for changes in stope geometry. For example, the footwall, hangingwall, and ore widths change drastically from lift to lift in some narrow vein gold mines. Consequently, a different approach is suggested. The new approach is based on Terzaghi's (1948) Arching Theory and the first order linear differential equation: ........ [For full abstract see attached file]
ALMA detection of millimetre 183 GHz H2O maser emission in the Superantennae galaxy at z ~ 0.06
Creators: name: Imanishi, Masatoshi
name: Hagiwara, Yoshiaki
name: Horiuchi, Shinji
name: Izumi, Takuma
name: Nakanishi, Kouichiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of ALMA band-5 (~170 GHz) observations of the merging ultraluminous infrared galaxy, the "Superantennae" (IRAS 19254-7245) at z=0.0617, which has been diagnosed as containing a luminous obscured active galactic nucleus (AGN). In addition to dense molecular line emission (HCN, HCO+, and HNC J = 2-1), we detect a highly luminous (~6e4Lsun) 183 GHz H2O 3(1,3)-2(2,0) emission line. We interpret the strong H2O emission as largely originating in maser amplification in AGN-illuminated dense and warm molecular gas, based on (1) the spatially compact (<220 pc) nature of the H2O emission, unlike spatially resolved (>500 pc) dense molecular emission, and (2) a strikingly different velocity profile from, and (3) significantly elevated flux ratio relative to, dense molecular emission lines. H2O maser emission, other than the widely studied 22 GHz 6(1,6)-5(2,3) line, has been expected to provide important information on the physical properties of gas in the vicinity of a central mass-accreting supermassive black hole (SMBH), because of different excitation energy. We here demonstrate that with highly sensitive ALMA, millimetre 183 GHz H2O maser detection is feasible out to >270 Mpc, opening a new window to scrutinize molecular gas properties around a mass-accreting SMBH far beyond the immediately local universe.
description: 6 pages, 2 figures. MNRAS Letters accepted
[CI] 492 GHz mapping toward Cas A
Creators: name: Mookerjea, B.
name: Kantharia, N. G.
name: Roshi, D. A.
name: Masur, M.
name: ;
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have mapped the [C I] emission at 492 GHz toward the supernova remnant Cas A. We detect [C I] emission from the periphery of the diffuse Photon Dominated Region (PDR) covering the disk of Cas A, as traced by the carbon recombination lines, as well as from the denser PDRs associated with the molecular clouds towards the south-east. [C I] emission is detected from both the Perseus and Orion arm molecular clouds, with the -47 km s^-1 Perseus arm feature being strong enough to be detected at all positions. We estimate the C/CO relative abundance to be 0.2 at the position of the identified CO clouds and >1 for most of the cloud. Here we show that the distribution of [C I] emitting regions compared to the C+ region and molecular cloud is consistent with a scenario involving PDRs. Using physical models for PDRs we constrain the physical properties of the [C I] line-forming regions. We estimate the densities of the [C I] emitting regions to be between 10^2 and 10^3 cm^-3. Based on rather high volume filling factors (~50%) we conclude that [C I] emission mainly arises from diffuse neutral gas in the Perseus arm.
description: Accepted for publication in MNRAS
Elicitation - word order
Creators: name: Soria Pérez, Celia
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Celia Soria Pérez. Topics covered include word order with switch-reference and complex nominals, negation, and other verbal morphology.
Driven-dissipative Ising Model: An exact field-theoretical analysis
Creators: name: Paz, Daniel A.
name: Maghrebi, Mohammad F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Driven-dissipative many-body systems are difficult to analyze analytically due to their non-equilibrium dynamics, dissipation and many-body interactions. In this paper, we consider a driven-dissipative infinite-range Ising model with local spontaneous emission, which naturally emerges from the open Dicke model in the large-detuning limit. Utilizing an adaptation of the Suzuki-Trotter quantum-to-classical mapping, we develop an exact field-theoretical analysis and a diagrammatic representation of the spin model that can be understood from a simple scattering picture. With this representation, we are able to analyze critical behavior, finite-size scaling and the effective temperature near the respective phase transition. Our formalism further allows a detailed study of the ordered phase where we find a "heating" region within which the effective temperature becomes negative, thereby exhibiting a truly non-equilibrium behavior. At the phase transition, we find two distinct critical behaviors with overdamped and underdamped critical dynamics at generic and weakly-dissipative critical points, respectively. We further show that the underdamped critical behavior is robust against short-range perturbations and is not an artifact of the mean-field nature of the model. To treat such perturbations, we extend our diagrammatic representation to include the coupling to spin waves due to the short-range interactions. The field-theoretical approach and the diagrammatics developed in this work should prove useful in applications to generic short-range driven-dissipative spin systems.
description: 25 pages, 16 figures
Health-Related Communication Behaviors of Environmental Action Gatekeepers: A Qualitative Study
Creators: name: Pomerantz, Sarah
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Public health
subject: Communication
subject: Environmental health
subject: communication behavior
subject: environmental justice
subject: information behavior
subject: information gatekeeper
subject: information seeking

description: The purpose of this study was to qualitatively explore behaviors of community members regarding environmental health information. Fourteen semi-structured interviews were conducted with environmental action gatekeepers from Prince George’s County, Maryland and Wards 7 and 8 of the District of Columbia to identify health-related communication behaviors and how they make meaning of those behaviors. Participants engaged in a range of behaviors to acquire, manage, and transmit information related to local environmental health issues. Although different behavior patterns did not emerge among activists versus advocates, a number of factors including perceived community constraints and informational subjective norms were identified as potential influences on communication behaviors. These findings support existing theoretical models, and suggest future research on how communicative behaviors among environmental health and environmental justice advocates may differ from those working on traditional ecological environmental issues. Findings suggest future opportunities to improve environmental health information sufficiency in the region.
Natural transformations of tensor algebras and representations of combinatorial groups
Creators: name: Grbic, Jelena
name: Wu, Jie
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16W30, 20F38, 55P35

description: Natural linear and coalgebra transformations of tensor algebras are studied. The representations of certain combinatorial groups are given. These representations are connected to natural transformations of tensor algebras and to the groups of the homotopy classes of maps from the James construction to loop spaces. Applications to homotopy theory appear in a sequel.
description: This is the version published by Algebraic & Geometric Topology on 29 November 2006
Supplementary Methods and Material from The role of recombination dynamics in shaping signatures of direct and indirect selection across the Ficedula flycatcher genome
Creators: name: Chase, Madeline A.
name: Vilcot, Maurine
name: Mugal, Carina F.
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 310509
subject: Genomics

description: Recombination is a central evolutionary process that reshuffles combinations of alleles along chromosomes, and consequently is expected to influence the efficacy of direct selection via Hill-Robertson interference. Additionally, the indirect effects of selection on neutral genetic diversity are expected to show a negative relationship with recombination rate, as background selection and genetic hitchhiking are stronger when recombination rate is low. However, owing to the limited availability of recombination rate estimates across divergent species, the impact of evolutionary changes in recombination rate on genomic signatures of selection remains largely unexplored. To address this question, we estimate recombination rate in two Ficedula flycatcher species, the taiga flycatcher (F. albicilla) and collared flycatcher (F. albicollis). We show that recombination rate is strongly correlated with signatures of indirect selection, and that evolutionary changes in recombination rate between species have observable impacts on this relationship. Conversely, signatures of direct selection on coding sequences show little to no relationship with recombination rate, even when restricted to genes where recombination rate is conserved between species. Thus, using measures of indirect and direct selection that bridge micro- and macro-evolutionary timescales, we demonstrate that the role of recombination rate and its dynamics varies for different signatures of selection.
Preface: Long-range Interactions and Synchronization
Creators: name: Gupta, Shamik
name: Bachelard, Romain
name: Filho, Tarcisio Rocha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Spontaneous synchronization is a general phenomenon in which a large population of coupled oscillators of diverse natural frequencies self-organize to operate in unison. The phenomenon occurs in physical and biological systems over a wide range of spatial and temporal scales, e.g., in electrochemical and electronic oscillators, Josephson junctions, laser arrays, animal flocking, pedestrians on footbridges, audience clapping, etc. Besides the obvious necessity of the synchronous firings of cardiac cells to keep the heart beating, synchrony is desired in many man-made systems such as parallel computing, electrical power-grids. On the contrary, synchrony could also be hazardous, e.g., in neurons, leading to impaired brain function in Parkinson's disease and epilepsy. Due to this wide range of applications, collective synchrony in networks of oscillators has attracted the attention of physicists, applied mathematicians and researchers from many other fields. An essential aspect of synchronizing systems is that long-range order naturally appear in these systems, which questions the fact whether long-range interactions may be particular suitable to synchronization. In this context, it is interesting to remind that long-range interacting system required several adaptations from statistical mechanics à la Gibbs Boltzmann, in order to deal with the peculiarities of these systems: negative specific heat, breaking of ergodicity or lack of extensivity. As for synchrony, it is still lacking a theoretical framework to use the tools from statistical mechanics. The present issue presents a collection of exciting recent theoretical developments in the field of synchronization and long-range interactions, in order to highlight the mutual progresses of these twin areas.
description: Preface of the Journal of Physics A Special Issue on "Long-range Interactions and Synchronization"
Results table of the CpG o/e and DNMT analyses including quality control (BUSCO) from Inference of DNA methylation patterns in molluscs
Creators: name: Maenner, Lisa
name: Schell, Tilman
name: Provataris, Panagiotis
name: Haase, Martin
name: Greve, Carola
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: 60408 Genomics

description: Results of CpG o/e and DNMT analyses including quality control (BUSCO)
Discovery of heavily-obscured AGN among 7 INTEGRAL hard X-ray sources observed by Chandra
Creators: name: Sazonov, S.
name: Revnivtsev, M.
name: Burenin, R.
name: Churazov, E.
name: Sunyaev, R.
name: Forman, W. R.
name: Murray, S. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed 7 INTEGRAL sources with the Chandra X-ray Observatory to refine their localization to ~2 arcsec and to study their X-ray spectra. Two sources are inferred to have a Galactic origin: IGR J08390-4833 is most likely a magnetic cataclysmic variable with a white dwarf spin period ~1,450 s; and IGR J21343+4738 is a high-mass X-ray binary. Five sources (IGR J02466-4222, IGR J09522-6231, IGR J14493-5534, IGR J14561-3738, and IGR J23523+5844) prove to be AGN with significant intrinsic X-ray absorption along the line of sight. Their redshifts and hard X-ray (17-60 keV) luminosities range from 0.025 to 0.25 and from ~2x10^43 to ~2x10^45 erg/s, respectively, with the distance to IGR J14493-5534 remaining unknown. The sources IGR J02466-4222 and IGR J14561-3738 are likely Compton-thick AGN with absorption column densities NH>10^24 cm^-2, and the former further appears to be one of the nearest X-ray bright, optically-normal galaxies. With the newly-identified sources, the number of heavily-obscured (NH>10^24 cm^-2) AGN detected by INTEGRAL has increased to ~10. Therefore, such objects constitute 10-15% of hard X-ray bright, non-blazar AGN in the local Universe. The small ratio (<<1%) of soft (0.5-8.0 keV) to hard (17-60 keV) band fluxes (Chandra to INTEGRAL) and the non-detection of optical narrow-line emission in some of the Compton-thick AGN in our sample suggests that there is a new class of objects in which the central massive black hole may be surrounded by a geometrically-thick dusty torus with a narrow ionization cone.
description: 10 pages, 3 figures. Revised version accepted for publication in A&A
Elicitation - switch-reference and binding
Creators: name: Sampi Ríos, Celia
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Celia Sampi Ríos. Topics covered include word order with complex nominals, switch-reference, binding, and verbal morphology.
Estimating uncertainties in clamp-on ultrasonic flow meter measurements
Creators: name: Gu, Xiaotang
Publisher: name: Imperial College London
Year: 2019

description: This thesis has two objectives. The first is to investigate the relative importance of the installation related setup parameter errors on uncertainties of a fully defined reference configuration of conventional clamp-on ultrasonic flow meters (UFMs). The second objective is to improve the overall accuracy of the UFMs by using a different ultrasonic transmission method to address the major contributors found in the first objective. The first objective relates to carrying out uncertainty analysis on conventional UFMs. There is very little work published reporting on the relative importance between these installation parameters and this is addressed in this thesis. First, a reference configuration of a conventional direct-path clamp-on UFM is presented. The upstream and downstream signals of this reference UFM were simulated using 2D finite element analysis including some simplifying assumptions to simulate the effect of flow. The uncertainties were quantified by comparing simulations that contain deliberately induced parameter errors in relation to the reference configuration. The uncertainty analysis revealed that the pipe roughness was the biggest contributing factor, approximately 2% for a moderately corroded pipe (RMS 0.2mm, correlation length 5mm). This is followed by the effect of wedge angle (>1%), pipe thickness (1%), wedge properties(1%) and pipe properties (<1%). To verify the simulation results, experiments were carried out by studying the effect of horizontal separation distance between transducers and internal pipe wall roughness on flow measurement error. The experimental result for separation distance matches well with the simulated result. The experimentally measured roughness related uncertainties also have the same magnitude levels as the simulation. The second objective is to address the important contributors found in the uncertainty analysis, internal pipe wall roughness. To reduce the roughness related uncertainties, leaky Lamb wave that uses longer wavelength and lower frequency (200kHz, 5 times lower than conventional UFMs) than the conventional UFMs was chosen. The ultrasonic signals of this leaky Lamb wave UFM were simulated using 2-D finite element (FE) analysis by unwrapping the pipe and only considering the cross section as a plate. The simulation results show that the uncertainties related to pipe wall roughness of leaky Lamb wave UFMs is approximately half of that of conventional UFMs for corroded pipe walls with RMS values larger than 0.1 mm (0.2, 0.35 and 0.5 mm). This method also improves the physical limit of the velocity sensitivity (60% improvement) and interrogates the average velocity of the whole volume of the fluid that passes the inspection area. Initial experiments were carried out. The experiments verified that a pure A0 mode can be transmitted using an EMAT transducer. The experiments also successfully detected the leaky A0 mode and prove the validity of using leaky Lamb wave in flow metering.
Gamma-ray Thermalization and Leakage from Millisecond Magnetar Nebulae: Towards a Self-Consistent Model for Superluminous Supernovae
Creators: name: Vurm, Indrek
name: Metzger, Brian D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Superluminous supernovae (SLSNe) are massive star explosions too luminous to be powered by traditional energy sources, such as radioactive 56Ni. These transients may instead be powered by a central engine, such as a millisecond pulsar or magnetar, whose relativistic wind inflates a nebula of high energy particles and radiation behind the expanding ejecta. We present 3D Monte Carlo radiative transfer calculations which follow the production and thermalization of high energy radiation from the nebula into optical radiation and, conversely, determine the gamma-ray emission that escapes the ejecta without thermalizing. We track the evolution of photons and matter in a coupled two-zone ("wind/nebula" and "ejecta") model, accounting for the range of radiative processes. We identify a novel mechanism by which gamma-gamma pair creation in the upstream pulsar wind regulates the mean energy of particles entering the nebula over the first several years after the explosion, rendering our results on this timescale insensitive to the (uncertain) intrinsic wind pair multiplicity. To explain the observed late-time steepening of SLSNe optical light curves as being the result of gamma-ray leakage, the nebular magnetization must be very low, epsB ~ 1 yr, inconsistent with observations. For magnetars to remain viable contenders for powering SLSNe, we conclude that either magnetic dissipation in the wind/nebula is extremely efficient, or that the spin-down luminosity decays significantly faster than the canonical dipole rate ~1/t^2 in a way that coincidentally mimicks gamma-ray escape.
description: 25 pages plus appendices, 13 figures, submitted to ApJ
CpG and GpC o/e distributions of 140 molluscan species from Inference of DNA methylation patterns in molluscs
Creators: name: Maenner, Lisa
name: Schell, Tilman
name: Provataris, Panagiotis
name: Haase, Martin
name: Greve, Carola
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: 60408 Genomics

description: CpG o/e and GpG o/e distribution patterns in protein-coding sequences in 140 mollusk species. The red and blue curves represent the two Gaussian distributions fitted to the data. The corresponding colored dashed lines represent the mean value of the fitted distributions.
Profiling fungi and the lower airways mycobiome in adult cystic fibrosis (CF) and non-CF bronchiectasis
Creators: name: Felton, Imogen
Publisher: name: Imperial College London
Year: 2019

description: Background: The chronic suppurative lung diseases, CF and non-CF bronchiectasis (BX) are characterised by polymicrobial airways infection. The prevalence of fungal airways isolates and clinical spectrum of associated disease are increasing in CF, however poor sensitivity of traditional detection methods and lack of consensus diagnostic criteria renders clinical interpretation challenging. Recent culture-independent investigations have profiled complex and diverse bacterial lower airways microbiota in both diseases. By contrast, comparatively little has been established regarding the fungal composition, or mycobiota therein. Aims: The aims of this thesis are i) to establish fungal airways isolate prevalence, biodiversity and clinical associations in UK adults with CF, ii) to investigate the fungal biodiversity as determined by conventional and enhanced mycological diagnostic techniques and iii) to develop a culture-independent method of characterising the fungal airways mycobiota in CF and non-CF BX. Methods, Results & Conclusions: The epidemiological study of the UK CF Registry established that fungal airways isolates have increased in prevalence and biodiversity over six years, with associated measures of increased disease burden with emerging fungal pathogens. The enhanced mycological diagnostic study revealed significant improvement in detection sensitivity for non-Aspergillus fungal isolates which are known to be emerging pathogens in CF airways disease. Characterisation of the fungal airways mycobiome by a novel, next generation sequencing assay, targeting the Internal Transcribed Spacer-2 (ITS2) region of ribosomal RNA gene in both CF and non-CF BX sputa, revealed complex fungal communities of which 97% of taxa were undetected by conventional culture techniques, and where fungi were found in all samples regardless of their isolation in culture. Compared with non-CF BX, CF airways were significantly less diverse and showed distinct airways mycobiome characteristics according to dominance by emerging fungal pathogens highlighting the proposed diagnostic category of ‘Fungal bronchitis’.
Top-DB-Net: Top DropBlock for Activation Enhancement in Person Re-Identification
Creators: name: Quispe, Rodolfo
name: Pedrini, Helio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Person Re-Identification is a challenging task that aims to retrieve all instances of a query image across a system of non-overlapping cameras. Due to the various extreme changes of view, it is common that local regions that could be used to match people are suppressed, which leads to a scenario where approaches have to evaluate the similarity of images based on less informative regions. In this work, we introduce the Top-DB-Net, a method based on Top DropBlock that pushes the network to learn to focus on the scene foreground, with special emphasis on the most task-relevant regions and, at the same time, encodes low informative regions to provide high discriminability. The Top-DB-Net is composed of three streams: (i) a global stream encodes rich image information from a backbone, (ii) the Top DropBlock stream encourages the backbone to encode low informative regions with high discriminative features, and (iii) a regularization stream helps to deal with the noise created by the dropping process of the second stream, when testing the first two streams are used. Vast experiments on three challenging datasets show the capabilities of our approach against state-of-the-art methods. Qualitative results demonstrate that our method exhibits better activation maps focusing on reliable parts of the input images.
description: Accepted on 25th International Conference on Pattern Recognition (ICPR2020)
Pinning modes and interlayer correlation in high magnetic field bilayer Wigner solids
Creators: name: Wang, Zhihai
name: Chen, Yong P.
name: Engel, L. W.
name: Tsui, D. C.
name: Tutuc, E.
name: Shayegan, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report studies of pinning mode resonances in the low total Landau filling (ν) Wigner solid of a series of bilayer hole samples with negligible interlayer tunneling, and with varying interlayer separation d. Comparison of states with equal layer densities (p,p) to single layer states (p,0) produced {in situ} by biasing, indicates that there is interlayer quantum correlation in the solid at small d. Also, the resonance frequency at small d is decreased just near ν=1/2 and 2/3, indicating the importance in the solid of correlations related to those in the fractional quantum Hall effects.
ITER cold VDEs in the limit of a perfectly conducting first wall
Creators: name: Clauser, C. F.
name: Jardin, S. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recently, it has been shown that a vertical displacement event (VDE) can occur in ITER even when the walls are perfect conductors, as a consequence of the current quench [A. H. Boozer, Physics of Plasmas 26 114501 (2019)]. We used the extended-MHD code M3D-C1 with an ITER-like equilibrium and induced a current quench to explore cold VDEs in the limit of perfectly conducting walls, using different wall geometries. In the particular case of a rectangular wall with the side walls far away from the plasma, we obtained very good agreement with the analytical model developed by Boozer that considers a top/bottom flat-plates wall. We show that the solution in which the plasma stays at the initial equilibrium position is improved when bringing the side walls closer to the plasma. When using the ITER first wall in the limit of a perfect conductor, the plasma stays stable at the initial equilibrium position far beyond the value predicted by the flat-plates wall limit. On the other hand, when considering the limit in which the inner shell of the ITER vacuum vessel is acting as a perfect conductor, the plasma is displaced during the current quench but the edge safety factor stays above $2$ longer in the current decay compared to the flat-plates wall limit. In all the simulated cases, the vertical displacement is found to be strongly dependent on the plasma current, in agreement with a similar finding in the flat-plates wall limit, showing an important difference with usual VDEs in which the current quench is not a necessary condition.
The variational theorem for the scattering length in low dimensions and its applications to universal systems
Creators: name: Cherny, Alexander Yu.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The variational theorem for the scattering length [Cherny and Shanenko, Phys. Rev. E 62, 1646 (2000)] is extended to one and two dimensions. It is shown that the arising singularities can be treated in terms of generalized functions. The variational theorem is applied to a universal many-body system of spinless bosons. The extended Tan adiabatic sweep theorem is obtained for interacting potentials of arbitrary shape with the variation of the one-particle dispersion. The pair distribution function is calculated at short distances by means of the variation of the potential. The suggested scheme is based on simple quantum mechanics; it is physically transparent and free from any divergence.
description: 6 pages, 1 figure
Vacuum Structure of Alternative Left-Right Model
Creators: name: Frank, Mariana
name: Majumdar, Chayan
name: Poulose, Poulose
name: Senapati, Supriya
name: Yajnik, Urjit A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate an Alternative Left-Right Model (ALRM) with $SU(2)_L$ as well as $SU(2)_R$ gauge groups, but unlike the traditional left-right symmetric models (LRSM) is not symmetric under the exchange of the fermion content. Interestingly, it can be embedded in $E_6$, while its low energy Higgs structure resembles the LRSM, involving Higgs doublets $χ_{L,R}$ and one Higgs bidoublet $Φ$. We analyze the scalar potential and the vacuum structure of the theory analytically to ensure the stability of scalar potential via bounded from below (BFB) and copositivity criteria, accompanied by a numerical study. We establish the necessary criteria for electric charge preserving vacua, yielding constraints on various coupling parameters of the theory. Finally we obtain constraints on the parameters of the model from collider data on the masses of the Higgs scalars.
description: 30 pages, 10 figures, matches version accepted for publication in JHEP
Chiral anomaly trapped in Weyl metals: Nonequilibrium valley polarization at zero magnetic field
Creators: name: Perez-Piskunow, Pablo M.
name: Bovenzi, Nicandro
name: Akhmerov, Anton R.
name: Breitkreiz, Maxim
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Weyl metals
subject: valley polarization
subject: chiral anomaly
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: In Weyl semimetals the application of parallel electric and magnetic fields leads to valley polarization -- an occupation disbalance of valleys of opposite chirality -- a direct consequence of the chiral anomaly. In this work, we present numerical tools to explore such nonequilibrium effects in spatially confined three-dimensional systems with a variable disorder potential, giving exact solutions to leading order in the disorder potential and the applied electric field. Application to a Weyl-metal slab shows that valley polarization also occurs without an external magnetic field as an effect of chiral anomaly "trapping": Spatial confinement produces chiral bulk states, which enable the valley polarization in a similar way as the chiral states induced by a magnetic field. Despite its finite-size origin, the valley polarization can persist up to macroscopic length scales if the disorder potential is sufficiently long ranged, so that direct inter-valley scattering is suppressed and the relaxation then goes via the Fermi-arc surface states.
Conformal mapping of ultrasonic crystals: confining ultrasound and cochlear-like wave guiding
Creators: name: Bazan, A.
name: Torres, M.
name: de Espinosa, F. R. Montero
name: Quintero-Torres, R.
name: Aragon, J. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Conformal mapping of a slab of a two-dimensional ultrasonic crystal generate a closed geometrical arrangement of ultrasonic scatterers with appealing acoustic properties. This acoustic shell is able to confine ultrasonic modes. Some of these internal resonances can be induced from an external wave source. The mapping of a linear defect produces a wave-guide that exhibits a spatial-frequency selection analogous to that characteristic of a synthetic "cochlea". Both, experimental and theoretical results are reported here.
description: 4 pages, 4 figures