cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isotropic Scaling Features Measured Locally in the Solar Wind Turbulence with Stationary Background Field
Creators: name: Wu, Honghong
name: Tu, Chuanyi
name: Wang, Xin
name: He, Jiansen
name: Yang, Liping
name: Wang, Linghua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The scaling anisotropy is crucial to interpret the nonlinear interactions in solar wind turbulence. Previous observations provide diverse results and the structure function analyses are also reported to be an approach to investigate the scaling anisotropy based on a local magnetic field. However, the determination of the sampling angle with respect to the local background magnetic field requires that the observed time series for the average are time stationary. Whether or not this required time stationarity is compatible with the measurements has not been investigated. Here we utilize the second-order structure function method to study the scaling anisotropy with a time-stationary background field.We analyze 88 fast solar wind intervals each with time durations larger than 2 days measured by WIND spacecraft in the period 2005-2018. We calculate the local magnetic field as the average of the time series B whose time stationarity is fulfilled by our criterion phi smaller than 10 deg (phi is the angle between the two averaged magnetic fields after cutting B into two halves). We find for the first time the isotropic scaling feature of the magnetic-trace structure functions with scaling indices -0.63 pm 0.08 and -0.70 pm 0.04, respectively, with the local magnetic field parallel and perpendicular to the solar wind velocity directions. The scaling for the velocity-trace structure functions is also isotropic and the indices are -0.47 pm 0.10 and -0.51 pm 0.09. We also find that with increasing phi threshold to 90 deg, the scaling index of the magnetic-trace structure function in the parallel direction decreases to -0.81, while the rms of the instantaneous angle between magnetic field and solar wind velocity increases up to 45deg at the timescale 150 s, indicating a mix of perpendicular measurements into parallel ones at large scales.
description: 10 pages, 10 figures, published by The Astrophysical Journal
Dynamics of the Solar Magnetic Network. II. Heating the Magnetized Chromosphere
Creators: name: Hasan, S. S.
name: van Ballegooijen, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider recent observations of the chromospheric network, and argue that the bright network grains observed in the Ca II H & K lines are heated by an as yet unidentified quasi-steady process. We propose that the heating is caused by dissipation of short-period magnetoacoustic waves in magnetic flux tubes (periods less than 100 s). Magnetohydrodynamic (MHD) models of such waves are presented. We consider wave generation in the network due to two separate processes: (a) by transverse motions at the base of the flux tube; and (b) by the absorption of acoustic waves generated in the ambient medium. We find that the former mechanism leads to an efficient heating of the chromosphere by slow magnetoacoustic waves propagating along magnetic field lines. This heating is produced by shock waves with a horizontal size of a few hundred kilometers. In contrast, acoustic waves excited in the ambient medium are converted into transverse fast modes that travel rapidly through the flux tube and do not form shocks, unless the acoustic sources are located within 100 km from the tube axis. We conclude that the magnetic network may be heated by magnetoacoustic waves that are generated in or near the flux tubes.
description: 30 pages, 8 figures, Accepted in Astrophysical Journal
Gravitational-wave astronomy with a physical calibration model
Creators: name: Payne, Ethan
name: Talbot, Colm
name: Lasky, Paul D.
name: Thrane, Eric
name: Kissel, Jeffrey S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We carry out astrophysical inference for compact binary merger events in LIGO-Virgo's first gravitational-wave transient catalog (GWTC-1) using a physically motivated calibration model. We demonstrate that importance sampling can be used to reduce the cost of what would otherwise be a computationally challenging analysis. We show that including the physical estimate for the calibration error distribution has negligible impact on the inference of parameters for the events in GWTC-1. Studying a simulated signal with matched filter signal-to-noise ratio $\text{SNR}=200$, we project that a calibration error estimate typical of GWTC-1 is likely to be negligible for the current generation of gravitational-wave detectors. We argue that other sources of systematic error---from waveforms, prior distributions, and noise modelling---are likely to be more important. Finally, using the events in GWTC-1 as standard sirens, we infer an astrophysically-informed improvement on the estimate of the calibration error in the LIGO interferometers.
description: 11 pages, 3 figures
Elicitation of placenames in Hoopa Valley
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090814-08: Elicitation of placenames in Hoopa Valley (Rennett's Ranch, Washington Jackson Ranch, Spencer's Ranch) based on census records from the late 19th century (Indian Census Rolls 1885-1940, National Archives and Records Service publication M-595, reel 182).
Semiclassical bosonic D-brane boundary states in curved spacetime
Creators: name: Vancea, Ion V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a simple method to calculate the semiclassical $D$-brane boundary states of the bosonic string propagating in an arbitrary curved spacetime in a perturbative approach in which the metric $g_{AB}$ and the constant antisymmetric Kalb-Ramond field $b_{AB}$ form the general background which is treated exactly. As an important particular case, it is shown that at the first order perturbation theory there are $D$-brane coherent states in the $d$-dimensional {\em AdS} spacetime if certain conditions are fulfilled by the boundary projectors.
description: 8 pages. LATeX file
Letter from F. W. Groves to Mr. [James] Goldie, May 20, 1927
Creators: name: Groves, F.W.
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to Mr. [James] Goldie from F. W. Groves, dated May 20, 1927, regarding the schedule of pipe lines and the court battle between Glenmore Irrigation District and Thomas Bulman.
Joint Trajectory and Power Allocation Design for Secure Artificial Noise aided UAV Communications
Creators: name: Mamaghani, Milad Tatar
name: Hong, Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper investigates an average secrecy rate (ASR) maximization problem for an unmanned aerial vehicle (UAV) enabled wireless communication system, wherein a UAV is employed to deliver confidential information to a ground destination in the presence of a terrestrial passive eavesdropper. By employing an artificial noise (AN) injection based secure two-phase transmission protocol, we aim at jointly optimizing the UAV's trajectory, network transmission power, and AN power allocation over a given time horizon to enhance the ASR performance. Specifically, we divide the original non-convex problem into four subproblems, and propose a successive convex approximation based efficient iterative algorithm to solve it suboptimally with guaranteed convergence. Simulation results demonstrate significant security advantages of our designed scheme over other known benchmarks, particularly for stringent flight durations.
description: 7 pages, 5 figures, submitted for possible journal publication
Uncertainty principle for axial power content of highly focused fields
Creators: name: Martinez-Herrero, R.
name: Carnicer, A.
name: Juvells, I.
name: Sanz, A. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the analysis of the on-axis intensity for a highly focused optical field it is highly desirable to deal with effective relations aimed at characterizing the field behavior in a rather simple fashion. Here, a novel and adequate measure for the size of the region where the axial power content mainly concentrates is proposed on the basis of an uncertainty principle. Accordingly, a meaningful relationship is provided for both the spread of the incident beam at the entrance of the highly focused optical system and the size of the region where the on-axis power mainly concentrates.
description: 15 pages, 6 figures
Rough translation of file 025_B (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090814-07: Rough translation (minute-by-minute) of file 025_B (tape 025, side B) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from the beginning of the file to 15:02; no transcription in this session, translation only. Major air conditioning noise in background (necessary because of hot weather). Due to re-numbering, tape 025_B has been assigned to the CLA item number LA256.025, audio file LA256.025B.
Maximum vertex occupation time and inert fugitive: recontamination does help
Creators: name: Dereniowski, Dariusz
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 68R05, 68R10

description: Given a simple graph $G$, we consider the node search problem with inert fugitive. We are interested in minimizing the maximum vertex occupation time, i.e. the maximum number of steps in which a vertex is occupied by a searcher during a search of $G$. We prove that a search program which does not allow a recontamination may not find an optimal solution to this problem, and the difference between the maximum vertex occupation time computed by a monotone search program and a program without such restriction may be arbitrarily large.
description: This paper has been withdrawn by the authors [arXiv admin]. The paper has been published and the final journal version has been improved by eliminating some technical errors
On a new formulation for energy transfer between convection and fast tides with application to giant planets and solar type stars
Creators: name: Terquem, Caroline
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: All the studies of the interaction between tides and a convective flow assume that the large scale tides can be described as a mean shear flow which is damped by small scale fluctuating convective eddies. The convective Reynolds stress is calculated using mixing length theory, accounting for a sharp suppression of dissipation when the turnover timescale is larger than the tidal period. This yields tidal dissipation rates several orders of magnitude too small to account for the circularization periods of late-type binaries or the tidal dissipation factor of giant planets. Here, we argue that the above description is inconsistent, because fluctuations and mean flow should be identified based on the timescale, not on the spatial scale, on which they vary. Therefore, the standard picture should be reversed, with the fluctuations being the tidal oscillations and the mean shear flow provided by the largest convective eddies. We assume that energy is locally transferred from the tides to the convective flow. Using this assumption, we obtain values for the tidal $Q$ factor of Jupiter and Saturn and for the circularization periods of PMS binaries in good agreement with observations. The timescales obtained with the equilibrium tide approximation are however still 40 times too large to account for the circularization periods of late-type binaries. For these systems, shear in the tachocline or at the base of the convective zone may be the main cause of tidal dissipation.
description: Accepted for publication in MNRAS, 20 pages, 11 figures
Extra-weakly Interacting Dark Matter
Creators: name: Feldman, Daniel
name: Kors, Boris
name: Nath, Pran
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate a new type of dark matter with couplings to ordinary matter naturally suppressed by at least one order of magnitude compared to weak interactions. Despite the extra-weak interactions massive particles of this type (XWIMPs) can satisfy the WMAP relic density constraints due to coannihilation if their masses are close to that of the lightest state of the MSSM. The region in the parameter space of a suitably extended mSUGRA model consistent with the WMAP3 constraints on XWIMPs is determined. Plots for sparticles masses are given which can be subject to test at the LHC. We also discuss the sensitivity of the analysis to the top mass. As an example for an explicit model we show that such a form of dark matter can arise in certain $Z'$ extensions of the MSSM. Specifically we consider an abelian extension with spontaneous gauge symmetry breaking via Fayet-Iliopoulos D-terms in the hidden sector. The LSP of the full model arises from the extra $U(1)_X$ sector with extra-weak couplings to Standard Model particles due to experimental constraints. With R-parity conservation the new XWIMP is a candidate for cold dark matter. In a certain limit the model reduces to the \st extension of the MSSM without a Higgs mechanism, and wider ranges of models with similar characteristics are easy to construct.
description: 25 pages, 7 figures, Version to appear in Physical Review D
The Complexity of Node Blocking for Dags
Creators: name: Dereniowski, Dariusz
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: F.2.2

description: We consider the following modification of annihilation game called node blocking. Given a directed graph, each vertex can be occupied by at most one token. There are two types of tokens, each player can move his type of tokens. The players alternate their moves and the current player $i$ selects one token of type $i$ and moves the token along a directed edge to an unoccupied vertex. If a player cannot make a move then he loses. We consider the problem of determining the complexity of the game: given an arbitrary configuration of tokens in a directed acyclic graph, does the current player has a winning strategy? We prove that the problem is PSPACE-complete.
description: 7 pages, 3 figures
Properties of ideal Gaussian glass-forming systems
Creators: name: Heuer, A.
name: Saksaengwijit, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce the ideal Gaussian glass-forming system as a model to describe the thermodynamics and dynamics of supercooled liquids on a local scale in terms of the properties of the potential energy landscape (PEL). The first ingredient is the Gaussian distribution of inherent structures, the second a specific relation between energy and mobility. This model is compatible with general considerations as well as with several computer simulations on atomic computer glass-formers. Important observables such as diffusion constants, structural relaxation times and kinetic as well as thermodynamic fragilities can be calculated analytically. In this way it becomes possible to identify a relevant PEL parameter determining the kinetic fragility. Several experimental observations can be reproduced. The remaining discrepancies to the experiment can be qualitatively traced back to the difference between small and large systems.
On-Device Text Image Super Resolution
Creators: name: Jain, Dhruval
name: Prabhu, Arun D
name: Ramena, Gopi
name: Goyal, Manoj
name: Mohanty, Debi Prasanna
name: Moharana, Sukumar
name: Purre, Naresh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recent research on super-resolution (SR) has witnessed major developments with the advancements of deep convolutional neural networks. There is a need for information extraction from scenic text images or even document images on device, most of which are low-resolution (LR) images. Therefore, SR becomes an essential pre-processing step as Bicubic Upsampling, which is conventionally present in smartphones, performs poorly on LR images. To give the user more control over his privacy, and to reduce the carbon footprint by reducing the overhead of cloud computing and hours of GPU usage, executing SR models on the edge is a necessity in the recent times. There are various challenges in running and optimizing a model on resource-constrained platforms like smartphones. In this paper, we present a novel deep neural network that reconstructs sharper character edges and thus boosts OCR confidence. The proposed architecture not only achieves significant improvement in PSNR over bicubic upsampling on various benchmark datasets but also runs with an average inference time of 11.7 ms per image. We have outperformed state-of-the-art on the Text330 dataset. We also achieve an OCR accuracy of 75.89% on the ICDAR 2015 TextSR dataset, where ground truth has an accuracy of 78.10%.
description: Accepted to the International Conference on Pattern Recognition(ICPR), 2020
MSSM flat direction inflation: slow roll, stability, fine tunning and reheating
Creators: name: Allahverdi, Rouzbeh
name: Enqvist, Kari
name: Garcia-Bellido, Juan
name: Jokinen, Asko
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider low scale slow roll inflation driven by the gauge invariant flat directions {\bf udd} and {\bf LLe} of the Minimally Supersymmetric Standard Model at the vicinity of a saddle point of the scalar potential. We study the stability of saddle point and the slow roll regime by considering radiative and supergravity corrections. The latter are found to be harmless, but the former require a modest finetuning of the saddle point condition. We show that while the inflaton decays almost instantly, full thermalization occurs late, typically at a temperature $T\approx 10^{7}$ GeV, so that there is no gravitino problem. We also compute the renormalization group running of the inflaton mass and relate it to slepton masses that may be within the reach of LHC and could be precisely determined in a future Linear Collider experiment.
description: 33 pages, 5 figures, uses JHEP3.cls, final version published in JCAP
Complex complex landscapes
Creators: name: Kent-Dobias, Jaron
name: Kurchan, Jorge
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the saddle-points of the $p$-spin model -- the best understood example of a `complex' (rugged) landscape -- when its $N$ variables are complex. These points are the solutions to a system of $N$ random equations of degree $p-1$. We solve for $\overline{\mathcal N}$, the number of solutions averaged over randomness in the $N\to\infty$ limit. We find that it saturates the Bézout bound $\log\overline{\mathcal N}\sim N\log(p-1)$. The Hessian of each saddle is given by a random matrix of the form $C^\dagger C$, where $C$ is a complex symmetric Gaussian matrix with a shift to its diagonal. Its spectrum has a transition where a gap develops that generalizes the notion of `threshold level' well-known in the real problem. The results from the real problem are recovered in the limit of real parameters. In this case, only the square-root of the total number of solutions are real. In terms of the complex energy, the solutions are divided into sectors where the saddles have different topological properties.
Leptopharynx bromelicola 1,2 Foissner, Wolf, Yashchenko & Stoeck 2011
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Nassophorea
Nassulida
Leptopharynidae
Leptopharynx
Leptopharynx bromelicola

description: Leptopharynx bromelicola 1,2 Foissner, Wolf, Yashchenko & Stoeck, 2011
Distribution. COSTA RICA: (Foissner et al. 2011). DOMINICAN REPUBLIC: (Foissner et al. 2011). ECUADOR: (Foissner et al. 2011). JAMAICA: (Dunthorn et al. 2012), (Hp); Northern slope of the Blue Mountains, surroundings of the village of Silver Hill (Foissner et al. 2011). MEXICO: (Foissner et al. 2011); Coffee plantation La Onza, near Coatepec (Durán-Ramírez et al. 2015), (Th); Coffee plantation Virginia Armand, near Coatepec (Durán-Ramírez et al. 2015), (Th); El Tegolome, near the town of Tlanchinol (ps), (Ti); Reserve of the Biosphere Chamela-Cuixmala (Durán-Ramírez & Mayén-Estrada 2018), (Bk, Tr); Santuario del Bosque de Niebla, near Xalapa (Durán-Ramírez et al. 2015), (Th); (Durán-Ramírez et al. 2019), (Tm, Ts); (ps), (Cs, Te, Tm, Ts); Village El Cerezal, near Santa Catarina Ixtepeji (ps), (To). PERU: (Foissner et al. 2011).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 19, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
On integrability of the Yang-Baxter $\si$-model
Creators: name: Klimcik, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove the integrability of the Yang-Baxter $\si$-model which is the Poisson-Lie deformation of the principal chiral model. We find also an explicit one-to-one map transforming every solution of the principal chiral model into a solution of the deformed model. With the help of this map, the standard procedure of the dressing of the principal chiral solutions can be directly transferred into the deformed Yang-Baxter context.
description: 22 pages
Mean first passage times for bond formation for a Brownian particle in linear shear flow above a wall
Creators: name: Korn, C.
name: Schwarz, U. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Motivated by cell adhesion in hydrodynamic flow, here we study bond formation between a spherical Brownian particle in linear shear flow carrying receptors for ligands covering the boundary wall. We derive the appropriate Langevin equation which includes multiplicative noise due to position-dependent mobility functions resulting from the Stokes equation. We present a numerical scheme which allows to simulate it with high accuracy for all model parameters, including shear rate and three parameters describing receptor geometry (distance, size and height of the receptor patches). In the case of homogeneous coating, the mean first passage time problem can be solved exactly. In the case of position-resolved receptor-ligand binding, we identify different scaling regimes and discuss their biological relevance.
description: final version after minor revisions
Understanding the spaces of knowledge construction : interviews with anthropologists in Canada
Creators: name: Loewen, Gregory Victor
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation is a study of how anthropologists in Canada over the previous thirty years, have constructed anthropological knowledge. It reports, examines, and comments upon interviews with anthropologists trained inside and outside of Canada. Most occupy senior academic positions at Canadian universities. Interpretation of this material takes place within the discourses of the anthropology of knowledge and education. Anthropologists say that ways of thinking about anthropological knowledge conflict at the theoretical level but do not conflict in practice. Practice is defined as fieldwork and teaching. Here, theory is felt only indirectly. Various tensions follow from this understanding. They include those between subject and object, positivism and post-positivism, value and validity, field and archive, and cultural relativism versus scientific knowledge. The concept which mediates these tensions is that of the field. Fieldwork is seen by anthropologists as an experience with both epistemological and ethical implications. Ethically, the field supports a certain manner of living and outlook on humanity. This outlook includes respect for cultural differences. Yet, epistemologically, the field is divisive because it is cast as the promotional agent for various kinds of method, theory, and reflective analyses. These analyses include a belief in value relativism in concert with a scientific notion of validity. For example, if it were not for the fundamental tools of positivism in anthropology, anthropologists felt that anthropological knowledge might be seen as idiosyncratic. In their search for human knowledge, anthropologists are united by their methods and ethics. They are divided, however, by their theories. These divisions and unities are inherited in the culture of anthropology. Although anthropologists understand different cultures' values to be equal, they suggest that ways of knowing another culture through anthropology are not equally valid. Theoretical conflicts are also produced in institutions. These are seen as major influences on the 'look' of anthropology at various times and places. Departments, publishers, students and teachers are all influences on anthropological knowledge construction. Anthropological knowledge is also seen as being constructed at a personal level. Anthropologists feel the concept of vocation in the individual's life-narrative as an anthropologist is important to this construction. Anthropology is seen as a calling or assignation. As well, the purpose of anthropological knowledge is seen as an ethical precept. The sanctity of field experiences for these anthropologists brings them together ethically but divides them epistemologically.
Letter from The Rainbow Rance Limited [James Goldie] to "Sirs" at The Okanagan Centre Irrigation and Power Co., May 31, 1927
Creators: name: Rainbow Ranche
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to "Sirs" at The Okanagan Centre Irrigation and Power Co. from The Rainbow Ranche Limited [James Goldie], dated May 31, 1927, requesting statements regarding domestic water rates and the rebate.
Entropic force between two horizons of dilaton black holes with a power-Maxwell field
Creators: name: Zhao, Hui-Hua
name: Zhang, Li-Chun
name: Gao, Ying
name: Liu, Fang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we consider $(n+1)$-dimensional topological dilaton de Sitter black holes with power-Maxwell field as thermodynamic systems. The thermodynamic quantities corresponding to the black hole horizon and the cosmological horizon respectively are interrelated. So the total entropy of the space-time should be the sum of the entropies of the black hole horizon and the cosmological horizon plus a corrected term which is produced by the association of the two horizons. We analyze the entropic force produced by the corrected term at given temperatures, which is affected by parameters and dimensions of the space-time. It is shown that the change of entropic force with the position ratio of two horizons in some region is similar to that of Lennard-Jones force with the position of particles. If the effect of entropic force is similar to that of Lennard-Jones force, and other forces are absent, the motion of the cosmological horizon relative to the black hole horizon would have an oscillating process. The entropic force between the two horizons is probably one of the participants to drive the evolution of universe.
description: 10 pages, 4 figures. It is to be published in Chinese Physics C
CP violation and electric-dipole-moment at low energy $τ$ production with polarized electrons
Creators: name: Vidal, J. Bernabeu G. A. Gonzalez-Sprinberg J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The new proposals for high luminosity B/Flavor factories, near and on top of the $Υ$ resonances, allow for a detailed investigation of CP-violation in the $τ$-pair production. In particular, bounds on the tau electric dipole moment can be obtained from genuine CP-odd observables related to the $τ$-pair production. We perform an independent analysis from low energy (10 GeV) data by means of linear spin observables. We show that, for a longitudinally polarized electron beam, a CP-odd asymmetry, associated to the normal polarization term, can be measured at these low energy facilities both at resonant and non resonant energies. In this way, stringent and independent bounds to the tau electric dipole moment, which are orders of magnitude below other high or low energy bounds, can be obtained.
description: 12 pages, 2 figures
Coupling between structural relaxation and diffusion in glass-forming liquids under pressure variation
Creators: name: Phan, Anh D.
name: Koperwas, Kajetan
name: Paluch, Marian
name: Wakabayashi, Katsunori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We theoretically investigate structural relaxation and activated diffusion of glass-forming liquids at different pressures using both the Elastically Collective Nonlinear Langevin Equation (ECNLE) theory and molecular dynamics (MD) simulation. An external pressure restricts local motions of a single molecule within its cage and triggers the slowing down of cooperative mobility. While the ECNLE theory and simulation generally predict a monotonic increase of the glass transition temperature and dynamic fragility with pressure, the simulation indicates a decrease of fragility as pressure above 1000 bar. The structural relaxation time is found to be linearly coupled with the inverse diffusion constant. Remarkably, this coupling is independent of compression. Theoretical calculations agree quantitatively well with simulations and are also consistent with prior works.
description: 7 pages, 5 figures
Re-elicitation of the Dug-from-the-Ground story as transcribed by Jeremiah Curtin
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090814-06: Re-elicitation of a version of the Xa:xowilwa:tł' (Dug-from-the-Ground) story found in Jeremiah Curtin's field notes (National Anthropological Archvies MS 2063), page 1 of 3.
Live Animal movements - Understand trade Partners Choices to predict chains of contact
Creators: name: Pachka, Hammami
name: Anses, Rose
name: Grosbois Vladimir
name: Stefan, Widgren
name: Apolloni Andrea
name: Mathieu, Andraud
Publisher: name: Zenodo
Year: 2021
Subjects: livestock movements
swine diseases
exponential random graph model
network analysis

description: Hepatitis E virus (HEV) infects pigs and humans. Its spread among pigs occurs within-farm through faecal–oral route including direct and environmental transmission. Live animal movements are known as the major driver of between farms spread. Strongly structured in space and time, the swine production chain is made of various interconnected farms, forming a complex network. We aimed to simulate realistic between-farm movements to feed a multilevel epidemiological model. Swine movements from 2017 to 2019 provided by the National Swine Identification database (BDporc) were analysed using complex network analysis methods. Exponential random graph models (ERGM) were then used to identify the key drivers of trade partner choices and the associated probabilities of contact between farms. In the 36-month period, 2.512.174 loading and unloading events were recorded involving 16.377 premises. Because of the large size of the dataset, analysis was limited to specific subsets of the data, using semestrial data and type of transported animals (breeding sows, piglets and growing pigs). For each data subset, an ERGM was selected using a stepwise forward approach based on AICs comparison and analyzing goodness-of-fit. In all cases, the company, type of farm, free-ranging characteristics, size and batch rearing systems were identified as explanatory variables of the network structure. Network statistics and levels included were subnetwork-specific. ERGM outcomes allow simulating pig trade networks with characteristics similar to the observed one, to prospect on the global impact of the network structure on pathogen transmission. Simulated movements fed a multi-level model developed with SimInf package. This work was done in the frame of the BIOPIGEE OHEJP project.
The NNLO non-singlet QCD analysis of parton distributions based on Bernstein polynomials
Creators: name: Khorramian, Ali N.
name: Tehrani, S. Atashbar
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A non-singlet QCD analysis of the structure function $xF_3$ up to NNLO is performed based on the Bernstein polynomials approach. We use recently calculated NNLO anomalous dimension coefficients for the moments of the $xF_3$ structure function in $νN$ scattering. In the fitting procedure, Bernstein polynomial method is used to construct experimental moments from the $xF_3$ data of the CCFR collaboration in the region of $x$ which is inaccessible experimentally. We also consider Bernstein averages to obtain some unknown parameters which exist in the valence quark densities in a wide range of $x$ and $Q^2$. The results of valence quark distributions up to NNLO are in good agreement with the available theoretical models. In the analysis we determined the QCD-scale $Λ^ {\bar{MS}}_{QCD, N_{f}=4}=211$ MeV (LO), 259 MeV (NLO) and 230 MeV (NNLO), corresponding to $α_s(M_Z^2)=0.1291$ LO, $α_s(M_Z^2)=0.1150$ NLO and $α_s(M_Z^2)=0.1142$ NNLO. We compare our results for the QCD scale and the $α_s(M_Z^2)$ with those obtained from deep inelastic scattering processes.
description: 20 pages, 7 figures, published in JHEP
Applications of Group Analysis to the Three-Dimensional Equations of Fluids with Internal Inertia
Creators: name: Siriwat, Piyanuch
name: Meleshko, Sergey V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Group classification of the three-dimensional equations describing flows of fluids with internal inertia, where the potential function $W= W(ρ,\dotρ)$, is presented. The given equations include such models as the non-linear one-velocity model of a bubbly fluid with incompressible liquid phase at small volume concentration of gas bubbles, and the dispersive shallow water model. These models are obtained for special types of the function $W(ρ,\dotρ)$. Group classification separates out the function $W(ρ,\dotρ)$ at 15 different cases. Another part of the manuscript is devoted to one class of partially invariant solutions. This solution is constructed on the base of all rotations. In the gas dynamics such class of solutions is called the Ovsyannikov vortex. Group classification of the system of equations for invariant functions is obtained. Complete analysis of invariant solutions for the special type of a potential function is given.
description: This is a contribution to the Proc. of the Seventh International Conference ''Symmetry in Nonlinear Mathematical Physics'' (June 24-30, 2007, Kyiv, Ukraine), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Letter from J. L. Logie to "Sir" [James Goldie], June 2, 1927
Creators: name: Logie, J. L.
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to "Sir" [James Goldie] from J. L. Logie, dated June 2, 1927, regarding whether Rainbow Ranche fell under the Board of Investigations ruling and the water rate for the ranch.
The Effects of vertical electric field and charged impurities on the spin-polarized transport of $β$-antimonene armchair nanoribbons
Creators: name: Touski, Shoeib Babaee
name: López-Sancho, M. Pilar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic properties of antimonene, single-layer Sb, are attracting great attention. In this paper, spin transport in armchair antimonene nanoribbon (ASbNR) is investigated. Following the tight-binding model, we calculate both the transmission probability and the conductance by means of the non-equilibrium Green's function (NEGF) method. The effects of an external electric field vertical to the ribbon plane are explored. Our results indicate that the spin-flip rate increases with the vertical electric field. Disorder effects on spin transport are addressed by considering the presence of charged impurities. It is found that charged impurities also enhance the spin-flip rate but to a lesser extent than the out-of-plane electric field.
Attention-Based Transformers for Instance Segmentation of Cells in Microstructures
Creators: name: Prangemeier, Tim
name: Reich, Christoph
name: Koeppl, Heinz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Signal Processing (eess.SP)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Detecting and segmenting object instances is a common task in biomedical applications. Examples range from detecting lesions on functional magnetic resonance images, to the detection of tumours in histopathological images and extracting quantitative single-cell information from microscopy imagery, where cell segmentation is a major bottleneck. Attention-based transformers are state-of-the-art in a range of deep learning fields. They have recently been proposed for segmentation tasks where they are beginning to outperforming other methods. We present a novel attention-based cell detection transformer (Cell-DETR) for direct end-to-end instance segmentation. While the segmentation performance is on par with a state-of-the-art instance segmentation method, Cell-DETR is simpler and faster. We showcase the method's contribution in a the typical use case of segmenting yeast in microstructured environments, commonly employed in systems or synthetic biology. For the specific use case, the proposed method surpasses the state-of-the-art tools for semantic segmentation and additionally predicts the individual object instances. The fast and accurate instance segmentation performance increases the experimental information yield for a posteriori data processing and makes online monitoring of experiments and closed-loop optimal experimental design feasible.
description: IEEE BIBM 2020 (accepted)
On linear versions of some addition theorems
Creators: name: Eliahou, Shalom
name: Lecouvey, Cédric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let K \subset L be a field extension. Given K-subspaces A,B of L, we study the subspace spanned by the product set AB = {ab | a \in A, b \in B}. We obtain some lower bounds on the dimension of this subspace and on dim B^n in terms of dim A, dim B and n. This is achieved by establishing linear versions of constructions and results in additive number theory mainly due to Kemperman and Olson.
description: To appear in Linear and Multilinear Algebra
Perceptual Evaluation of Liquid Simulation Methods
Creators: name: Um, Kiwon
name: Hu, Xiangyu
name: Thuerey, Nils
Publisher: name: arXiv
Year: 2020
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: This paper proposes a novel framework to evaluate fluid simulation methods based on crowd-sourced user studies in order to robustly gather large numbers of opinions. The key idea for a robust and reliable evaluation is to use a reference video from a carefully selected real-world setup in the user study. By conducting a series of controlled user studies and comparing their evaluation results, we observe various factors that affect the perceptual evaluation. Our data show that the availability of a reference video makes the evaluation consistent. We introduce this approach for computing scores of simulation methods as visual accuracy metric. As an application of the proposed framework, a variety of popular simulation methods are evaluated.
description: Details at: http://ge.in.tum.de/publications/2017-sig-um/
Electrical conductance of molecular junctions by a robust statistical analysis
Creators: name: González, M. Teresa
name: Wu, Songmei
name: Huber, Roman
name: van der Molen, Sense J.
name: Schönenberger, Christian
name: Calame, Michel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose an objective and robust method to extract the electrical conductance of single molecules connected to metal electrodes from a set of measured conductance data. Our method roots in the physics of tunneling and is tested on octanedithiol using mechanically controllable break junctions. The single molecule conductance values can be deduced without the need for data selection.
description: 4 figures
Analytic Integration of the Newton Potential over Cuboids and an Application to Fast Multipole Methods
Creators: name: Kirchhart, Matthias
name: Weniger, Donat
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 31-04 31-08

description: We present simplified formulae for the analytic integration of the Newton potential of polynomials over boxes in two- and three-dimensional space. These are implemented in an easy-to-use C++ library that allows computations in arbitrary precision arithmetic which is also documented here. We describe how these results can be combined with fast multipole methods for general, non-polynomial data.
description: The software is available from the first author's website: http://www.acom.rwth-aachen.de/5people/kirchhart/start#software
Gravitational Radiation from Primordial Helical MHD Turbulence
Creators: name: Kahniashvili, Tina
name: Gogoberidze, Grigol
name: Ratra, Bharat
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider gravitational waves (GWs) generated by primordial inverse-cascade helical magneto-hydrodynamical (MHD) turbulence produced by bubble collisions at the electroweak phase transitions (EWPT). Compared to the unmagnetized EWPT case, the spectrum of MHD-turbulence-generated GWs peaks at lower frequency with larger amplitude and can be detected by the proposed Laser Interferometer Space Antenna (LISA).
description: 4 pages, 1 figure, references and discussions added, figure modified, results unchanged, Phys. Rev. Lett. accepted
Interlacing of zeros of Laguerre polynomials of equal and consecutive degree
Creators: name: Arvesú, J.
name: Driver, K.
name: Littlejohn, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We investigate interlacing properties of zeros of Laguerre polynomials $ L_{n}^{(α)}(x)$ and $ L_{n+1}^{(α+k)}(x),$ $ α> -1, $ where $ n \in \mathbb{N}$ and $ k \in {\{ 1,2 }\}$. We prove that, in general, the zeros of these polynomials interlace partially and not fully. The sharp $t-$interval within which the zeros of two equal degree Laguerre polynomials $ L_n^{(α)}(x)$ and $ L_n^{(α+t)}(x)$ are interlacing for every $n \in \mathbb{N}$ and each $ α> -1$ is $ 0 < t \leq 2,$ \cite{DrMu2}, and the sharp $t-$interval within which the zeros of two consecutive degree Laguerre polynomials $ L_n^{(α)}(x)$ and $ L_{n-1}^{(α+t)}(x)$ are interlacing for every $n \in \mathbb{N}$ and each $ α> -1$ is $ 0 \leq t \leq 2,$ \cite{DrMu1}. We derive conditions on $n \in \mathbb{N}$ and $α,$ $ α> -1$ that determine the partial or full interlacing of the zeros of $ L_n^{(α)}(x)$ and the zeros of $ L_n^{(α+ 2 + k)}(x),$ $ k \in {\{ 1,2 }\}$. We also prove that partial interlacing holds between the zeros of $ L_n^{(α)}(x)$ and $ L_{n-1}^{(α+ 2 +k )}(x)$ when $ k \in {\{ 1,2 }\},$ $n \in \mathbb{N}$ and $ α> -1$. Numerical illustrations of interlacing and its breakdown are provided.
Probing variations in fundamental constants with radio and optical quasar absorption-line observations
Creators: name: Tzanavaris, P.
name: Murphy, M. T.
name: Webb, J. K.
name: Flambaum, V. V.
name: Curran, S. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Nine quasar absorption spectra at 21-cm and UV rest-wavelengths are used to estimate possible variations in x=alpha^2 g_p mu, (alpha is the fine structure constant, g_p the proton g-factor and mu=me/mp the electron-to-proton mass ratio). We find ^weighted_total(=Dxxwt)=(0.63+-0.99) 10^-5 over 0.23~
description: 19 pages, 11 figures. Accepted for publication in MNRAS. Replaced with correct figure 1
Rough translation of file 025_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090814-05: Rough translation (minute-by-minute) of file 025_A (tape 025, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 25:03 to the end of the file; no transcription in this session, translation only. Due to re-numbering, tape 025_A has been assigned to the CLA item number LA256.025, audio file LA256.025A.