cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating a Polya frequency function_2
Creators: name: Pal, Jayanta Kumar
name: Woodroofe, Michael
name: Meyer, Mary
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07, 62G08 (Primary) 90C25 (Secondary)

description: We consider the non-parametric maximum likelihood estimation in the class of Polya frequency functions of order two, viz. the densities with a concave logarithm. This is a subclass of unimodal densities and fairly rich in general. The NPMLE is shown to be the solution to a convex programming problem in the Euclidean space and an algorithm is devised similar to the iterative convex minorant algorithm by Jongbleod (1999). The estimator achieves Hellinger consistency when the true density is a PFF_2 itself.
description: Published at http://dx.doi.org/10.1214/074921707000000184 in the IMS Lecture Notes Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Star-planet interactions VI. Tides, stellar activity and planet evaporation
Creators: name: Rao, Suvrat
name: Pezzotti, Camilla
name: Meynet, Georges
name: Eggenberger, Patrick
name: Buldgen, Gaël
name: Mordasini, Christoph
name: Bourrier, Vincent
name: Ekström, Sylvia
name: Georgy, Cyril
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Tidal interactions and planet evaporation processes impact the evolution of close-in star-planet systems. We study the impact of stellar rotation on these processes. We compute the time evolution of star-planet systems consisting of a planet with initial mass between 0.02 and 2.5 M$_{ Jup}$ (6 and 800 M$_{ Earth}$), in a quasi-circular orbit with an initial orbital distance between 0.01 and 0.10 au, around a solar-type star evolving from the Pre-Main-Sequence (PMS) until the end of the Main-Sequence (MS) phase. We account for the evolution of: the stellar structure, the stellar angular momentum due to tides and magnetic braking, the tidal interactions (equilibrium and dynamical tides in stellar convective zones), the mass-evaporation of the planet, and the secular evolution of the planetary orbit. We consider that at the beginning of the evolution, the proto-planetary disk has fully dissipated and planet formation is complete. Both a rapid initial stellar rotation, and a more efficient angular momentum transport inside the star, in general, contribute toward the enlargement of the domain which is devoid of planets after the PMS phase, in the plane of planet mass vs. orbital distance. Comparisons with the observed distribution of exoplanets orbiting solar mass stars, in the plane of planet mass vs. orbital distance (addressing the "Neptunian desert" feature), show an encouraging agreement with the present simulations, especially since no attempts have been made to fine-tune initial parameters of the models to fit the observations. We also obtain an upper limit for the orbital period of bare-core planets, that agrees with observations of the "radius valley" feature in the plane of planet radius vs. orbital period. The two effects, tides and planet evaporation, should be accounted for simultaneously and in a consistent way, with a detailed model for the evolution of the star.
description: 15 pages, 13 figures. This manuscript has been accepted for publication in Astronomy & Astrophysics section 10. Planets and planetary systems
Smooth surfaces with non-simply-connected complements
Creators: name: Kim, Hee Jung
name: Ruberman, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 57R57

description: We give two constructions of surfaces in simply-connected 4-manifolds with non simply-connected complements. One is an iteration of the twisted rim surgery introduced by the first author. We also construct, for any group G satisfying some simple conditions, a simply-connected symplectic manifold containing a symplectic surface whose complement has fundamental group G. In each case, we produce infinitely many smoothly inequivalent surfaces that are equivalent up to smooth s-cobordism and hence are topologically equivalent for good groups.
description: 28 pages, 2 figures
Additional file 4 of A validation study of the 4-variable and 8-variable kidney failure risk equation in transplant recipients in the United Kingdom
Creators: name: Ali, Ibrahim
name: Kalra, Philip A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 4. Calibration plots for the 4- and 8-variable KFRE for living and deceased donor recipients in the whole cohort and in those with an eGFR
Unsupervised Super-Resolution of Satellite Imagery for High Fidelity Material Label Transfer
Creators: name: Ghosh, Arthita
name: Ehrlich, Max
name: Davis, Larry
name: Chellappa, Rama
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Urban material recognition in remote sensing imagery is a highly relevant, yet extremely challenging problem due to the difficulty of obtaining human annotations, especially on low resolution satellite images. To this end, we propose an unsupervised domain adaptation based approach using adversarial learning. We aim to harvest information from smaller quantities of high resolution data (source domain) and utilize the same to super-resolve low resolution imagery (target domain). This can potentially aid in semantic as well as material label transfer from a richly annotated source to a target domain.
description: Published in the proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium
Diluted Graphene Antiferromagnet
Creators: name: Brey, L.
name: Fertig, H. A.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study RKKY interactions between local magnetic moments for both doped and undoped graphene. We find in both cases that the interactions are primarily ferromagnetic for moments on the same sublattice, and antiferromagnetic for moments on opposite sublattices. This suggests that at sufficiently low temperatures dilute magnetic moments embedded in graphene can order into a state analogous to that of a dilute antiferromagnet. We find that in the undoped case one expects no net magnetic moment, and demonstrate numerically that this effect generalizes to ribbons where the magnetic response is strongest at the edge, suggesting the possibility of an unusual spin-transfer device. For doped graphene we find that moments at definite lattice sites interact over longer distances than those placed in interstitial sites of the lattice ($1/R^2$ vs. $1/R^3$) because the former support a Kohn anomaly that is suppressed in the latter due to the absence of backscattering.
description: 5 pages, two figures included
Variation of Bar Strength with Central Velocity Dispersion in Spiral Galaxies
Creators: name: Das, M.
name: Laurikainen, E.
name: Salo, H.
name: Buta, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the variation of bar strength with central velocity dispersion in a sample of barred spiral galaxies. The bar strength is characterized by $Q_g$, the maximal tangential perturbation associated with the bar, normalized by the mean axisymmetric force. It is derived from the galaxy potentials which are obtained using near-infrared images of the galaxies. However, $Q_g$ is sensitive to bulge mass. Hence we also estimated bar strengths from the relative Fourier intensity amplitude ($A_{2}$) of bars in near-infrared images. The central velocity dispersions were obtained from integral field spectroscopy observations of the velocity fields in the centers of these galaxies; it was normalized by the rotation curve amplitude obtained from HI line width for each galaxy. We found a correlation between bar strengths (both $Q_g$ and $A_{2}$) and the normalized central velocity dispersions in our sample. This suggests that bars weaken as their central components become kinematically hotter. This may have important implications for the secular evolution of barred galaxies.
description: To appear in Ap&SS
Influence of the relict cosmological constant on accretion discs
Creators: name: Stuchlik, Z.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Surprisingly, the relict cosmological constant has a crucial influence on properties of accretion discs orbiting black holes in quasars and active galactic nuclei. We show it by considering basic properties of both the geometrically thin and thick accretion discs in the Kerr-de Sitter black-hole (naked-singularity) spacetimes. Both thin and thick discs must have an outer edge allowing outflow of matter into the outer space, located nearby the so called static radius, where the gravitational attraction of a black hole is balanced by the cosmological repulsion. Jets produced by thick discs can be significantly collimated after crossing the static radius. Extension of discs in quasars is comparable with extension of the associated galaxies, indicating a possibility that the relict cosmological constant puts an upper limit on extension of galaxies.
description: 15 pages, 4 figures, invited paper
Additional file 3 of A validation study of the 4-variable and 8-variable kidney failure risk equation in transplant recipients in the United Kingdom
Creators: name: Ali, Ibrahim
name: Kalra, Philip A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 3. Comparison of the study cohort to the KFRE development cohort
First-principles study of electron transport in ScN
Creators: name: Mu, Sai
name: Rowberg, Andrew J. E.
name: Leveillee, Joshua
name: Giustino, Feliciano
name: Van de Walle, Chris G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the conduction-band structure and electron mobility in rocksalt ScN based on density functional theory. The first-principles band structure allows us to obtain band velocities and effective masses as a function of energy. Electron-phonon scattering is assessed by explicitly computing the $q$-dependent electron-phonon matrix elements, with the inclusion of the long-range electrostatic interaction. The influence of free-carrier screening on the electron transport is assessed using the random phase approximation. We find a notable enhancement of electron mobility when the carrier concentration exceeds 10$^{20}$ cm$^{-3}$. We calculate the room-temperature electron mobility in ScN to be 587 cm$^2$/Vs at low carrier concentrations. When the carrier concentration is increased, the electron mobility starts to decrease significantly around $n=10^{19}$ cm$^{-3}$, and drops to 240 cm$^2$/Vs at $n=10^{21}$ cm$^{-3}$. We also explore the influence of strain in (111)- and (100)-oriented ScN films. For (111) films, we find that a 1.0\% compressive epitaxial strain increases the in-plane mobility by 72 cm$^2$/Vs and the out-of-plane mobility by 50 cm$^2$/Vs. For (100) films, a 1.0\% compressive epitaxial strain increases the out-of-plane mobility by as much as 172 cm$^2$/Vs, but has a weak impact on the in-plane mobility. Our study sheds light on electron transport in ScN at different electron concentrations and shows how strain engineering could increase the electron mobility.
description: 12 pages, 11 figures
Direct calculation of interfacial tensions from computer simulation: Results for freely jointed tangent hard sphere chains
Creators: name: MacDowell, Luis G.
name: Bryk, Pawel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We develop a methodology for the calculation of surface free energies based on the probability distribution of a wandering interface. Using a simple extension of the NpT sampling, we allow the interface area to randomly probe the available space and evaluate the surface free energy from histogram analysis and the corresponding average. The method is suitable for studying systems with either continuous or discontinuous potentials, as it does not require explicit evaluation of the virial. The proposed algorithm is compared with known results for the surface tension of Lennard--Jones and Square Well fluid, as well as for the interface tension of a bead--spring polymer model and good agreement is found. We also calculate interfacial tensions of freely jointed tangent hard sphere chains on athermal walls for a wide range of chain lengths and densities. The results are compared with three different theoretical approaches, Scaled Particle Theory, the Yu and Wu density functional theory and an analytical approximation based on the latter approach. Whereas SPT only yields qualitative results, the last two approaches are found to yield very good agreement with simulations.
description: 20 pages, 6 figures, Phys. Rev. E in press,
THE INFLUENCE OF POLITICAL AND ECONOMIC FACTORS ON THE DEVELOPMENT OF TOURISM IN THE SCO COUNTRIES
Creators: name: Azimova, Dilfuzaxon
Publisher: name: Zenodo
Year: 2023

description: This article investigates the dynamic interplay of political and economic factors influencing the development of tourism in the member states of the Shanghai Cooperation Organization (SCO). The SCO, consisting of eight diverse nations, provides a unique context for understanding how political stability, economic conditions, bilateral agreements, and cultural diplomacy shape the tourism landscape. Through a comprehensive analysis, this study aims to uncover the nuanced relationships between political decisions, economic dynamics, and the growth potential of tourism within the SCO countries.
Observation of the first gravitational microlensing event in a sparse stellar field : the Tago event
Creators: name: Fukui, A.
name: Abe, F.
name: Ayani, K.
name: Fujii, M.
name: Iizuka, R.
name: Itow, Y.
name: Kabumoto, K.
name: Kamiya, K.
name: Kawabata, T.
name: Kawanomoto, S.
name: Kinugasa, K.
name: Koff, R. A.
name: Krajci, T.
name: Naito, H.
name: Nogami, D.
name: Narusawa, S.
name: Ohishi, N.
name: Ohnishi, K.
name: Sumi, T.
name: Tsumuraya, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the observation of the first gravitational microlensing event in a sparse stellar field, involving the brightest (V=11.4 mag) andclosest (~ 1 kpc) source star to date. This event was discovered by an amateurastronomer, A. Tago, on 2006 October 31 as a transient brightening, by ~4.5 mag during a ~15 day period, of a normal A-type star (GSC 3656-1328) in the Cassiopeia constellation. Analysis of both spectroscopic observations and the light curve indicates that this event was caused by gravitational microlensing rather than an intrinsically variable star. Discovery of this single event over a 30 year period is roughly consistent with the expected microlensing rate for the whole sky down to V = 12 mag stars. However, the probability for finding events with such a high magnification (~ 50) is much smaller, by a factor ~1/50, which implies that the true event rate may be higher than expected. This discovery indicates the potential of all sky variability surveys, employing frequent sampling by telescopes with small apertures and wide fields of view, for finding such rare transient events, and using the observations to explore galactic disk structure and search for exo-planets.
description: 13 pages, 2 tables, 3 figures, accepted by ApJ
Particle acceleration and non-thermal emission in colliding-wind binary systems
Creators: name: Pittard, J. M.
name: Romero, G. E.
name: Vila, G. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a model for the creation of non-thermal particles via diffusive shock acceleration in a colliding-wind binary. Our model accounts for the oblique nature of the global shocks bounding the wind-wind collision region and the finite velocity of the scattering centres to the gas. It also includes magnetic field amplification by the cosmic ray induced streaming instability and the dynamical back reaction of the amplified field. We assume that the injection of the ions and electrons is independent of the shock obliquity and that the scattering centres move relative to the fluid at the Alfvén velocity (resulting in steeper non-thermal particle distributions). We find that the Mach number, Alfvénic Mach number, and transverse field strength vary strongly along and between the shocks, resulting in significant and non-linear variations in the particle acceleration efficiency and shock nature (turbulent vs. non-turbulent). We find much reduced compression ratios at the oblique shocks in most of our models compared to our earlier work, though total gas compression ratios that exceed 20 can still be obtained in certain situations. We also investigate the dependence of the non-thermal emission on the stellar separation and determine when emission from secondary electrons becomes important. We finish by applying our model to WR 146, one of the brightest colliding wind binaries in the radio band. We are able to match the observed radio emission and find that roughly 30 per cent of the wind power at the shocks is channelled into non-thermal particles.
description: 22 pages, 19 figures, accepted for publication in MNRAS
Piezoelectric effect and polarization switching in Al$_{1-x}$Sc$_x$N
Creators: name: Wang, Haochen
name: Adamski, Nicholas
name: Mu, Sai
name: Van de Walle, Chris G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Aluminum nitride is piezoelectric and exhibits spontaneous polarization along the $c$-axis, but the polarization cannot be switched by applying an electric field. Adding Sc to AlN enhances the piezoelectric properties, and can make the alloy ferroelectric. We perform a detailed first-principles analysis of spontaneous and piezoelectric polarization. Comparisons between explicit supercell calculations show that the virtual crystal approximation produces accurate results for polarization, but falls short in describing the phase stability of the alloy. We relate the behavior of the piezoelectric constant $e_{33}$ to the microscopic behavior of the internal displacement parameter $u$, finding that the internal strain contribution dominates in the Sc-induced enhancement. The value of $u$ increases with scandium concentration, bringing the alloy locally closer to a layered hexagonal structure. Our approach allows us to calculate the ferroelectric switching barrier, which we analyze as a function of Sc concentration and temperature based on Ginzburg-Landau theory.
description: 7 pages, 6 figures
Studying and applying magnetic dressing with a Bell and Bloom magnetometer
Creators: name: Bevilacqua, Giuseppe
name: Biancalana, Valerio
name: Dancheva, Yordanka
name: Vigilante, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The magnetic dressing phenomenon occurs when spins precessing in a static field (holding field) are subject to an additional, strong, alternating field. It is usually studied when such extra field is homogeneous and oscillates in one direction. We study the dynamics of spins under dressing condition in two unusual configurations. In the first instance, an inhomogeneous dressing field produces space dependent dressing phenomenon, which helps to operate the magnetometer in strongly inhomogeneous static field. In the second instance, beside the usual configuration with static and the strong orthogonal oscillating magnetic fields, we add a secondary oscillating field, which is perpendicular to both. The system shows novel and interesting features that are accurately explained and modelled theoretically. Possible applications of these novel features are briefly discussed.
description: 8 pages, 2 figs, 18 refs. Published version available (open access) at https://iopscience.iop.org/article/10.1088/1742-6596/1859/1/012018
Unitary isomorphism of Fock spaces of bosons and fermions arising from a representation of the Cuntz algebra $\co{2}$
Creators: name: Kawamura, Katsunori
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46K10; 81T05

description: Bosons and fermions are described by using canonical generators of Cuntz algebras on any permutative representation. According to branching laws associated with these descriptions, a certain representation of the Cuntz algebra $\co{2}$ induces Fock representations ${\cal H}_{B}$ and ${\cal H}_{F}$ of bosons and fermions simultaneously. From this, a unitary operator $U$ from ${\cal H}_{B}$ to ${\cal H}_{F}$ is obtained. We show the explicit formula of the action of $U$ on the standard basis of ${\cal H}_{B}$. It is shown that $U$ preserves the particle number of ${\cal H}_{B}$ and ${\cal H}_{F}$.
description: 22 pages
Additional file 1 of Prostatic artery embolization performed in anteroposterior projections versus steep oblique projections: single centre retrospective comparative analysis
Creators: name: Moschouris, Hippocrates
name: Dimakis, Andreas
name: Papadaki, Marina G.
name: Liarakos, Athanasios
name: Stamatiou, Konstantinos
name: Ioulita Isaakidou
name: Ilianna Tsetsou
name: Mylonakou, Vasiliki
name: Malagari, Katerina
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Table 1. Basic parameters of pelvic CTA utilized for this study. Table 2. Exposure and other technical parameters of DSA. Table 3. Basic features of the US modalities which were applied for evaluation of PAE. Table 4. Prevalence of different types of origin of PA for the two groups. Table 5. Comparison of technical features of PAE for the two groups. Figure 1. Application of AP-PAE in a case of type III origin of the right PA. Oblique sagittal (A), and anteroposterior (B), MIP reconstructions from the planning CTA show the obturator artery (open arrows) and the PA (arrows) originating from the proximal part of the obturator. Anteroposterior road-map image of the right IIA (C) and of its branches also shows the obturator artery (open arrow) and the PA (arrow), although the origin of the latter cannot be clearly identified. The obturator could be easily catheterized and selective angiography (D), with the microcatheter at its proximal part (open arrow), clearly showed the origin of the PA (arrow). Subsequent catheterization of the PA was also relatively easy (selective PA angiogram, E). Intraprocedural CEUS (F), after IV injection of SonoVue immediately post embolization of right PA, shows extensive devascularization of the right hemiprostate (asterisks). Figure 2. Application of AP-PAE in a case of bilateral type IV PA origin. Anteroposterior MIP reconstruction (A), from the planning CTA, shows PA of both sides (arrows) originating from the internal pudendals. Anteroposterior road-map image of the left IIA and of its branches (B), shows advancement of the microcatheter at the middle third of the internal pudendal (arrow). It was easy to proximally retract the microcatheter and then select the PA. Anteroposterior angiograms (C,D) show the tip of the microcatheter (arrows) in the extraprostatic part of the left PA. Anteroposterior angiogram of the right IIA and of its branches (E), shows the origin of the right PA (open arrow) from the internal pudendal. Anteroposterior angiograms with the tip of the microcatheter at the origin and more distally in the right PA (arrows at F and G, respectively) show the typical appearance of the PA. Intraprocedural CEUS (H), after IV injection of SonoVue at the end of the procedure, shows extensive devascularization of both prostatic lobes (asterisks)
The outburst of the eruptive young star OO Serpentis between 1995 and 2006
Creators: name: Kóspál, Á.
name: Ábrahám, P.
name: Prusti, T.
name: Acosta-Pulido, J.
name: Hony, S.
name: Moór, A.
name: Siebenmorgen, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: OO Serpentis is a deeply embedded pre-main sequence star that went into outburst in 1995 and gradually faded afterwards. Its eruption resembled the well-known FU Orionis-type or EX Lupi-type outbursts. Since very few such events have ever been documented at infrared wavelengths, our aim is to study the temporal evolution of OO Ser in the infrared. OO Ser was monitored with the Infrared Space Observatory starting 4 months after peak brightness and covering 20 months. In 2004-2006 we again observed OO Ser from the ground and complemented this dataset with archival Spitzer obsevations also from 2004. We analysed these data with special attention to source confusion and constructed light curves at 10 different wavelengths as well as spectral energy distributions. The outburst caused brightening in the whole infrared regime. According to the infrared light curves, OO Ser started a wavelength-independent fading after peak brightness. Later the flux decay became slower but stayed wavelength-independent. The fading is still ongoing, and current fading rates indicate that OO Ser will not return to quiescent state before 2011. The outburst timescale of OO Ser seems to be shorter than that of FUors, but longer than that of EXors. The outburst timescale and the moderate luminosity suggest that OO Ser is different from both FUors and EXors, and shows similarities to the recently erupted young star V1647 Ori. Based on its spectral energy distribution and bolometric temperature, OO Ser seems to be an early class I object, with an age of < 10^5 yr. The object is probably surrounded by an accretion disc and a dense envelope. Due to the shorter outburst timescales, the viscosity in the circumstellar disc of OO Ser is probably an order of magnitude higher than usual for FUors.
description: 12 pages, 7 figures, accepted for publication in A&A
Interacting RNA polymerase motors on DNA track: effects of traffic congestion and intrinsic noise on RNA synthesis
Creators: name: Tripathi, Tripti
name: Chowdhury, Debashish
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: RNA polymerase (RNAP) is an enzyme that synthesizes a messenger RNA (mRNA) strand which is complementary to a single-stranded DNA template. From the perspective of physicists, an RNAP is a molecular motor that utilizes chemical energy input to move along the track formed by a DNA. In many circumstances, which are described in this paper, a large number of RNAPs move simultaneously along the same track; we refer to such collective movements of the RNAPs as RNAP traffic. Here we develop a theoretical model for RNAP traffic by incorporating the steric interactions between RNAPs as well as the mechano-chemical cycle of individual RNAPs during the elongation of the mRNA. By a combination of analytical and numerical techniques, we calculate the rates of mRNA synthesis and the average density profile of the RNAPs on the DNA track. We also introduce, and compute, two new measures of fluctuations in the synthesis of RNA. Analyzing these fluctuations, we show how the level of {\it intrinsic noise} in mRNA synthesis depends on the concentrations of the RNAPs as well as on those of some of the reactants and the products of the enzymatic reactions catalyzed by RNAP. We suggest appropriate experimental systems and techniques for testing our theoretical predictions.
description: 13 pages, including 6 EPS figures; accepted for publication in Physical Review E
Reflectionless wave propagation on shallow water with variable bathymetry and current
Creators: name: Churilov, Semyon
name: Stepanyants, Yury
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In the linear approximation, we study a one-dimensional problem of the reflectionless wave propagation on a surface of a shallow duct with the spatially varying water depth, duct width, and current. We show that both global and bounded exact solutions describing reflectionless propagation in opposite directions of long waves of arbitrary shape exist for the particular variations of these parameters. A general analysis of the problem is illustrated by a few solutions constructed for the specific cases of spatial profiles of the flow velocity. The results obtained can be of interest to mitigate the possible impact of waves on ships, marine engineering constructions, and human activity in the coastal zones.
description: 25 pages, 10 figures
Effective Viscosity of Dilute Bacterial Suspensions: A Two-Dimensional Model
Creators: name: Haines, Brian M.
name: Aranson, Igor S.
name: Berlyand, Leonid
name: Karpeev, Dmitry A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Suspensions of self-propelled particles are studied in the framework of two-dimensional (2D) Stokesean hydrodynamics. A formula is obtained for the effective viscosity of such suspensions in the limit of small concentrations. This formula includes the two terms that are found in the 2D version of Einstein's classical result for passive suspensions. To this, the main result of the paper is added, an additional term due to self-propulsion which depends on the physical and geometric properties of the active suspension. This term explains the experimental observation of a decrease in effective viscosity in active suspensions.
description: 15 pages, 3 figures, submitted to Physical Biology
Nontrivial quantum effects in biology: A skeptical physicists' view
Creators: name: Wiseman, H. M.
name: Eisert, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: Other Quantitative Biology (q-bio.OT)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Invited contribution to "Quantum Aspects of Life", D. Abbott Ed. (World Scientific, Singapore, 2007).
description: 15 pages, minor typographical errors corrected
A comparison of the accuracy of saddlepoint conditional cumulative distribution function approximations
Creators: name: Zhang, Juan
name: Kolassa, John E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62E60, 41A58 (Primary)

description: Consider a model parameterized by a scalar parameter of interest and a nuisance parameter vector. Inference about the parameter of interest may be based on the signed root of the likelihood ratio statistic R. The standard normal approximation to the conditional distribution of R typically has error of order O(n^{-1/2}), where n is the sample size. There are several modifications for R, which reduce the order of error in the approximations. In this paper, we mainly investigate Barndorff-Nielsen's modified directed likelihood ratio statistic, Severini's empirical adjustment, and DiCiccio and Martin's two modifications, involving the Bayesian approach and the conditional likelihood ratio statistic. For each modification, two formats were employed to approximate the conditional cumulative distribution function; these are Barndorff-Nielson formats and the Lugannani and Rice formats. All approximations were applied to inference on the ratio of means for two independent exponential random variables. We constructed one and two-sided hypotheses tests and used the actual sizes of the tests as the measurements of accuracy to compare those approximations.
description: Published at http://dx.doi.org/10.1214/074921707000000193 in the IMS Lecture Notes Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Comment on "The shape and composition of interstellar silicate grains"
Creators: name: Bradley, J. P.
name: Ishii, H. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This Comment is in response to an Erratum to the paper entitled "The shape and composition of interstellar silicate grains" (Min et al., A&A, 462, 667-676 (2007). The Erratum corrects erroneously cited data but upholds the paper's original conclusions that GEMS are not remnant interstellar grains and that most GEMS formed in the early solar system. In our Comment, we show that the correct data in fact strengthen the relationship between GEMS and interstellar silicates, contrary to the conclusions of Min et al. in their Erratum. We also explore the validity of the isotopic and bulk chemical bases for comparison and present additional indicators of past ISM radiation processing of silicates.
description: 4 pages; Accepted for publication April 4, 2008 by Astronomy & Astrophysics; added missing subscript in table footnote
Additional file 1 of Emergency physician’s dispatch by a paramedic-staffed emergency medical communication centre: sensitivity, specificity and search for a reference standard
Creators: name: Chappuis, Victor Nathan
name: Deham, Hélène
name: Cottet, Philippe
name: Gartner, Birgit Andrea
name: Sarasin, François Pierre
name: Niquille, Marc
name: Suppan, Laurent
name: Larribau, Robert
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Prevalence of main symptoms, NACA ≥4 & NACA ≥5, 1st & 2nd- line dispatch. This table shows the prevalence of the main symptoms identified during the call, the prevalence respectively of NACA ≥4 and NACA ≥5 found on site for each symptom, and the prevalence of 1st & 2nd line dispatch of the emergency physician for each symptom.
Supplemental material for paper: A Methodology for Assessing Computation/Communication Overlap of MPI Nonblocking Collectives
Creators: name: DENIS, Alexandre
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: Computer Software
subject: FOS: Computer and information sciences
subject: Distributed Computing

description: Supplemental material for ISC submission: A Methodology for Assessing Computation/Communication Overlap of MPI Nonblocking Collectives.
Pseudo-Complex Field Theory
Creators: name: Hess, Peter O.
name: Greiner, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new formulation of field theory is presented, based on a pseudo-complex description. An extended group structure is introduced, implying a minimal scalar length, rendering the theory regularized a la Pauli-Villars. Cross sections are calculated for the scattering of an electron at an external Coulomb field and the Compton scattering. Deviations due to a smallest scalar length are determined. The theory also permits a modification of the minimal coupling scheme, resulting in a generalized dispersion relation. A shift of the Greisen-Zatsepin-Kuzmin-limit (GZK) of the cosmic ray spectrum is the consequence.
description: 21 pages, 1 figure
Bridging the Gap Between Simply Parametrized and Free-Form Pixelated Models of Galaxy Lenses: The Case of WFI 2033-4723 Quad
Creators: name: Barrera, Bernardo
name: Williams, Liliya L. R.
name: Coles, Jonathan P.
name: Denzel, Philipp
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the radial and azimuthal mass distribution of the lensing galaxy in WFI2033-4723. Mindful of the fact that modeling results depend on modeling assumptions, we examine two very different recent models: simply parametrized (SP) models from the H0LiCOW collaboration, and pixelated free-form (FF) GLASS models. In addition, we fit our own models which are a compromise between the astrophysical grounding of SP, and the flexibility of FF approaches. Our models consist of two offset parametric mass components, and generate many solutions, all fitting the quasar point image data. Among other results, we show that to reproduce point image properties the lensing mass must be lopsided, but the origin of this asymmetry can reside in the main lens plane or along the line of sight. We also show that there is a degeneracy between the slope of the density profile and the magnitude of external shear, and that the models from various modeling approaches are connected not by the mass sheet degeneracy, but by a more generalized transformation. Finally, we discuss interpretation degeneracy which afflicts all mass modeling: inability to correctly assign mass to the main lensing galaxy vs. nearby galaxies or line of sight structures. While this may not be a problem for the determination of $H_0$, interpretation degeneracy may become a major issue for the detailed study of galaxy structure.
description: 13 pages, 7 figures, submitted to OJA
Multivariate medians and measure-symmetrization
Creators: name: Vitale, Richard A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60D05 (Primary) 52A21, 52A40, 52B12, 60E99, 62H99 (Secondary)

description: We discuss two research areas dealing respectively with (1) a class of multivariate medians and (2) a symmetrization algorithm for probability measures.
description: Published at http://dx.doi.org/10.1214/074921707000000201 in the IMS Lecture Notes Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Additional file 3 of Emergency physician’s dispatch by a paramedic-staffed emergency medical communication centre: sensitivity, specificity and search for a reference standard
Creators: name: Chappuis, Victor Nathan
name: Deham, Hélène
name: Cottet, Philippe
name: Gartner, Birgit Andrea
name: Sarasin, François Pierre
name: Niquille, Marc
name: Suppan, Laurent
name: Larribau, Robert
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 3. “Diagnostic test” for each symptom using NACA ≥4 as reference standard. This table shows the “diagnostic test” applied for each of the 53 symptoms, thus detailing the sensitivity, specificity, positive & negative predictive values, over-triage & under-triage with their respective 95% confidence intervals for each symptom when using NACA ≥4 as reference standard.
Effect of potato starch addition on gel-forming ability and autolytic inhibition of Rohu gels
Creators: name: Warangkana Sompongse
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2024
Subjects: Proteolytic degradation
Gel properties
Potato starch
Rohu (Labeo rohita)

description: Asia-Pacific Journal of Science and Technology, 29, 1, 9
TLR4, BTN1A1, and Pit-1 polymorphisms and their associations with the estimated breeding values of growth traits of Brahman cattle in Thailand
Creators: name: Monchai Duangjinda
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2024
Subjects: Thai Brahman cattle
TLR4
BTN1A1
Pit-1
Growth traits
EBV

description: Asia-Pacific Journal of Science and Technology, 29, 1, 8
Quantum hydrodynamics and nonlinear differential equations for degenerate Fermi gas
Creators: name: Bettelheim, E.
name: Abanov, A. G.
name: Wiegmann, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We present new nonlinear differential equations for spacetime correlation functions of Fermi gas in one spatial dimension. The correlation functions we consider describe non-stationary processes out of equilibrium. The equations we obtain are integrable equations. They generalize known nonlinear differential equations for correlation functions at equilibrium and provide vital tools to study non-equilibrium dynamics of electronic systems. The method we developed is based only on Wick's theorem and the hydrodynamic description of the Fermi gas. Differential equations appear directly in bilinear form.
description: 10+ pages, appendix with some technical details is added
Radiation trapping in 1D using the Markov chain formalism: A computational physics project
Creators: name: Alves-Pereira, A. R.
name: Nunes-Pereira, E. J.
name: Martinho, J. M. G.
name: Berberan-Santos, M. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics Education (physics.ed-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A computational model study for complete frequency redistribution linear incoherent two-level atomic radiation trapping in optically dense media using the multiple scattering representation is presented. This model study discuss at length the influence of the spectral distributions, overall opacity and emission quantum yield to trapping distorted ensemble quantities stressing physical insight and with a non-specialist audience in mind. Macroscopic reemission yield, lifetime, steady state spectra and spatial distributions are calculated as a function of intrinsic emission yield, opacity and external excitation mode for Doppler, Lorentz and Voigt lineshapes. The work could constitute the basis for a final undergraduate or beginning graduate project in computational physics instruction and implements the analytical developments of the previous instalment of this contribution.
Computer-Mediated Consent to Sex: The Context of Tinder
Creators: name: Zytko, Douglas
name: Furlo, Nicholas
name: Carlin, Bailey
name: Archer, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper reports an interview study about how consent to sexual activity is computer-mediated. The study's context of online dating is chosen due to the prevalence of sexual violence, or nonconsensual sexual activity, that is associated with dating app-use. Participants (n=19) represent a range of gender identities and sexual orientations, and predominantly used the dating app Tinder. Findings reveal two computer-mediated consent processes: consent signaling and affirmative consent. With consent signaling, users employed Tinder's interface to infer and imply agreement to sex without any explicit confirmation before making sexual advances in-person. With affirmative consent, users employed the interface to establish patterns of overt discourse around sex and consent across online and offline modalities. The paper elucidates shortcomings of both computer-mediated consent processes that leave users susceptible to sexual violence and envisions dating apps as potential sexual violence prevention solutions if deliberately designed to mediate consent exchange.
description: Pre-print. To appear in Proceedings of the ACM on Human-Computer Interaction, Vol. 5, CSCW1
Statistical thinking: From Tukey to Vardi and beyond
Creators: name: Shepp, Larry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62x07 (Primary)

description: Data miners (minors?) and neural networkers tend to eschew modelling, misled perhaps by misinterpretation of strongly expressed views of John Tukey. I discuss Vardi's views of these issues as well as other aspects of Vardi's work in emision tomography and in sampling bias.
description: Published at http://dx.doi.org/10.1214/074921707000000210 in the IMS Lecture Notes Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Establishment of reference intervals in biochemistry parameters from check-up records: AMS Medical Laboratory, Khon Kaen
Creators: name: Patcharee Jearanaikoon
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2024
Subjects: Reference interval
Biochemistry parameters
Khon Kaen
Age-affected reference interval
Aging society
Health promotion

description: Asia-Pacific Journal of Science and Technology, 29, 1, 9
Additional file 4 of Emergency physician’s dispatch by a paramedic-staffed emergency medical communication centre: sensitivity, specificity and search for a reference standard
Creators: name: Chappuis, Victor Nathan
name: Deham, Hélène
name: Cottet, Philippe
name: Gartner, Birgit Andrea
name: Sarasin, François Pierre
name: Niquille, Marc
name: Suppan, Laurent
name: Larribau, Robert
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 4. “Diagnostic test” for each symptom using NACA ≥5 as reference standard. This table shows the “diagnostic test” applied for each of the 53 symptoms, thus detailing the sensitivity, specificity, positive & negative predictive values, over-triage & under-triage with their respective 95% confidence intervals for each symptom when using NACA ≥5 as reference standard.
MASHG'ULOTLARDA INNOVATSION TA'LIM SAMARADORLIGIGA ERISHISH MASALALARI
Creators: name: Sattorov, Xayrulla
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqola  innovatsion o'qitish vositasi sifatida ishlatilishi mumkin bo'lgan ba'zi usullarga bag'ishlangan. Bu yerda yangi o'qitish standartlarida zamonaviy vosita bo'lib xizmat qilgan kontseptsiya, maqolada talabalar ma'lumot olishning yangi usullari, ma'lumotni yetkazib berishning qiziqarli shakllari haqida atroflicha fikr yuritilgan.