cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simulations of the formation of a gaseous disc and young stars near Sgr A* via cloud-cloud collisions
Creators: name: Nayakshin, Sergei
name: Hobbs, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Young massive stars in the central parsec of our Galaxy are best explained by star formation within at least one, and possibly two, massive self-gravitating gaseous discs. With help of numerical simulations, we here consider whether the observed population of young stars could have originated from a large angle collision of two massive gaseous clouds at R ~ 1 pc from Sgr A*. In all the simulations performed, the post-collision gas flow forms an inner nearly circular gaseous disc and one or two eccentric outer filaments, consistent with the observations. Furthermore, the radial stellar mass distribution is always very steep, sigma proportional to R^-2, again consistent with the data. The 3D velocity structure of the stellar distribution is however sensitive to initial conditions (e.g., the impact parameter of the clouds) and gas cooling details. In all the cases the amount of gas accreted by our inner boundary condition is large, enough to allow Sgr A* to radiate near its Eddington limit during ~ 10^5 years. This suggests that a refined model would have physically larger clouds (or a cloud and a disc such as the CND) colliding at a distance of a few pc rather than 1 pc as in our simulations.
description: 8 pages, 4 figures. To appear in proceedings of "The Universe under the Microscope", Bad Honnef, Germany, April 2008. Simulation movies available at http://www.astro.le.ac.uk/~aph11/movies.html
Flow characterization of supersonic gas jets: Experiments and Simulations
Creators: name: Patel, Milaan
name: Thomas, Jinto
name: Joshi, Hem Chandra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In present work, we report an experimental setup that has been developed to characterize highly under-expanded helium and nitrogen jets confined in a vacuum chamber. The evolution of Zone of Silence (ZOS) is studied and found that experimentally measured ZOS for helium and nitrogen jets are in agreement with empirical relation and mathematical model. The velocity of the jet inside ZOS is measured using a developed time of flight (TOF) probe without using a skimmer. We are able to measures the velocity of the gas jet itself compared to a skimmer-based method which measures the velocity of gas that is subjected to further expansion after the skimmer. Moreover, this method is free from skimmer interference and calibration involved with it. We observe that the measured velocity for helium is smaller than the terminal velocity. This can be attributed to losses which can occur due to nozzle geometry. Simulations are carried out using available DS2V code. Experimentally observed velocities of jets inside ZOS are compared with simulated values and are found to be in agreement within experimental uncertainties.
The shear viscosity of the non-commutative plasma
Creators: name: Landsteiner, Karl
name: Mas, Javier
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the shear viscosity of the non-commutative N=4 super Yang-Mills quantum field theory at strong coupling using the dual supergravity background. Special interest derives from the fact that the background presents an intrinsic anisotropy in space through the distinction of commutative and non-commutative directions. Despite this anisotropy the analysis exhibits the ubiquitous result η/s = 1/4πfor two different shear channels. In order to derive this result, we show that the boundary energy momentum tensor must couple to the open string metric. As a byproduct we compute the renormalised holographic energy momentum tensor and show that it coincides with one in the commutative theory.
description: 17 pages. v2: reference added
When is Eaton's Markov chain irreducible?
Creators: name: Hobert, James P.
name: Tan, Aixin
name: Liu, Ruitao
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Consider a parametric statistical model $P(\mathrm{d}x|θ)$ and an improper prior distribution $ν(\mathrm{d}θ)$ that together yield a (proper) formal posterior distribution $Q(\mathrm{d}θ|x)$. The prior is called strongly admissible if the generalized Bayes estimator of every bounded function of $θ$ is admissible under squared error loss. Eaton [Ann. Statist. 20 (1992) 1147--1179] has shown that a sufficient condition for strong admissibility of $ν$ is the local recurrence of the Markov chain whose transition function is $R(θ,\mathrm{d}η)=\int Q(\mathrm{d}η|x)P(\mathrm {d}x|θ)$. Applications of this result and its extensions are often greatly simplified when the Markov chain associated with $R$ is irreducible. However, establishing irreducibility can be difficult. In this paper, we provide a characterization of irreducibility for general state space Markov chains and use this characterization to develop an easily checked, necessary and sufficient condition for irreducibility of Eaton's Markov chain. All that is required to check this condition is a simple examination of $P$ and $ν$. Application of the main result is illustrated using two examples.
description: Published at http://dx.doi.org/10.3150/07-BEJ6191 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
High-Frequency Microstrip Cross Resonators for Circular Polarization EPR Spectroscopy
Creators: name: Henderson, J. J.
name: Ramsey, C. M.
name: Quddusi, H. M.
name: del Barco, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this article we discuss the design and implementation of a novel microstrip resonator which allows for the absolute control of the microwaves polarization degree for frequencies up to 30 GHz. The sensor is composed of two half-wavelength microstrip line resonators, designed to match the 50 Ohms impedance of the lines on a high dielectric constant GaAs substrate. The line resonators cross each other perpendicularly through their centers, forming a cross. Microstrip feed lines are coupled through small gaps to three arms of the cross to connect the resonator to the excitation ports. The control of the relative magnitude and phase between the two microwave stimuli at the input ports of each line allows for tuning the degree and type of polarization of the microwave excitation at the center of the cross resonator. The third (output) port is used to measure the transmitted signal, which is crucial to work at low temperatures, where reflections along lengthy coaxial lines mask the signal reflected by the resonator. EPR spectra recorded at low temperature in an S= 5/2 molecular magnet system show that 82%-fidelity circular polarization of the microwaves is achieved over the central area of the resonator.
description: Published in Review of Scientific Instruments
Scale-dependent Galaxy Bias
Creators: name: Coles, Peter
name: Erdogdu, Pirin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a simple heuristic model to demonstrate how feedback related to the galaxy formation process can result in a scale-dependent bias of mass versus light, even on very large scales. The model invokes the idea that galaxies form initially in locations determined by the local density field, but the subsequent formation of galaxies is also influenced by the presence of nearby galaxies that have already formed. The form of bias that results possesses some features that are usually described in terms of stochastic effects, but our model is entirely deterministic once the density field is specified. Features in the large-scale galaxy power spectrum (such as wiggles that might in an extreme case mimic the effect of baryons on the primordial transfer function) could, at least in principle, arise from spatial modulations of the galaxy formation process that arise naturally in our model. We also show how this fully deterministic model gives rise to apparently stochasticity in the galaxy distribution.
description: 14 pages, 2 figures, typos corrected, discussion added and references corrected; matches version accepted by JCAP
OFF-state trapping phenomena in GaN HEMTs: interplay between gate trapping, acceptor ionization and positive charge redistribution
Creators: name: Canato, E.
name: Meneghini, M.
name: De Santi, C.
name: Masin, F.
name: Stockman, A.
name: Moens, P.
name: Zanoni, E.
name: Meneghesso, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We present an extensive analysis of the trapping processes induced by drain bias stress in AlGaN/GaN high-electron-mobility transistors (HEMTs) with p-GaN gate. We demonstrate that: (i) with increasing drain stress, pulsed I-V and VTH measurements shown an initial positive VTH variation and an increase in RON then, for drain voltages >100 V, VTH is stable and the RON shows a partial recovery. (ii) At moderate voltages, VTH instability is related to trapping at the gate stack, due to residual negative charge left behind by the holes that leave the p-GaN layer through the Schottky gate contact and/or to trapping at the barrier. At higher voltages, we demonstrate the interplay of two trapping processes by C-V and pulsed drain current analysis: (iii) a fast storage of positive charge, accumulated near the buffer/SRL interface, not strongly thermally activated, dominating at higher voltages; (iv) a slower negative charge storage, thermally activated with activation energies for trapping and de-trapping equal to ~0.6 eV and ~0.4-0.8 eV, respectively.
description: ["European Union (EU)" & "Horizon 2020"]["Euratom" & Euratom research & training programme 2014-2018"][European Union's Horizon 2020 research and innovation program][InRel-NPower][grant agreement No. 720527]
Comment on "Ab Initio study of 40-Ca with an importance-truncated no-core shell model"
Creators: name: Dean, D. J.
name: Hagen, G.
name: Hjorth-Jensen, M.
name: Papenbrock, T.
name: Schwenk, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In a recent Letter [Phys. Rev. Lett. 99, 092501 (2007)], Roth and Navratil present an importance-truncation scheme for the no-core shell model. The authors claim that their truncation scheme leads to converged results for the ground state of 40-Ca. We believe that this conclusion cannot be drawn from the results presented in the Letter. Furthermore, the claimed convergence is at variance with expectations of many-body theory. In particular, coupled-cluster calculations indicate that a significant fraction of the correlation energy is missing.
description: 1 page, comment on arXiv:0705.4069 (PRL 99, 092501 (2007))
Bounding sup-norms of cusp forms of large level
Creators: name: Blomer, Valentin
name: Holowinsky, Roman
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F12

description: Let f be an $L^2$-normalized weight zero Hecke-Maass cusp form of square-free level N, character $χ$ and Laplacian eigenvalue $λ\geq 1/4$. It is shown that $\| f \|_{\infty} \ll_λ N^{-1/37}$, from which the hybrid bound $\|f \|_{\infty} \ll λ^{1/4} (Nλ)^{-δ}$ (for some $δ> 0$) is derived. The first bound holds also for $f = y^{k/2}F$ where F is a holomorphic cusp form of weight k with the implied constant now depending on k.
description: version 3: substantially revised version
การพัฒนารายวิชา ง 33102 งานอาชีพสู่อาเซียน สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 6 โรงเรียนโสภณศิริราษฎร์ จังหวัดราชบุรี
Creators: name: วิไลรัตน์  วรรณวิไลย
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2014
Subjects: การพัฒนารายวิชา,งานอาชีพสู่อาเซียน, ประชาคมเศรษฐกิจอาเซียน

description: 1, 8, วารสารวิชาการและวิจัย มทร.พระนคร
Reheating the Universe in Braneworld Cosmological Models with bulk-brane energy transfer
Creators: name: Harko, T.
name: Choi, W. F.
name: Wong, K. C.
name: Cheng, K. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The emergence of the cosmological composition (the reheating era) after the inflationary period is analyzed in the framework of the braneworld models, in which our Universe is a three-brane embedded in a five-dimensional bulk, by assuming the possibility of the brane-bulk energy exchange. The inflaton field is assumed to decay into normal matter only, while the dark matter is injected into the brane from the bulk. To describe the reheating process we adopt a phenomenological approach, by describing the decay of the inflaton field by a friction term proportional to the energy density of the field. After the radiation dominated epoch the model reduces to the standard four dimensional cosmological model. The modified field equations are analyzed analytically and numerically in both the extra-dimensions dominate reheating phase (when the quadratic terms in energy density dominate the dynamics), and in the general case. The evolution profiles of the matter, of the scalar field and of the scale factor of the universe are obtained for different values of the parameters of the model, and of the equations of state of the normal and dark matter, respectively. The equation describing the time evolution of the ratio of the energy density of the dark and of the normal matter is also obtained. The ratio depends on the rate of the energy flow between the bulk and the brane. The observational constraint of an approximately constant ratio of the dark and of the baryonic matter requires that the dark matter must be non-relativistic (cold). The model predicts a reheating temperature of the order of $3\times 10^6$ GeV, a brane tension of the order of $10^{25}$ GeV$^4$, and the obtained composition of the universe is consistent with the observational data.
description: 29 pages, 9 figures, accepted for publication in JCAP
Additional file 1 of Microarray analysis reveals an inflammatory transcriptomic signature in peripheral blood for sciatica
Creators: name: Wang, Yi
name: Guogang Dai
name: Jiang, Ling
name: Shichuan Liao
name: Xia, Jiao
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1 : Table S1. Sequences of primers used for quantitative real-time polymerase chain reaction. F, forward; R, reverse.
Bilddenken como modo de cognoscibilidade: por uma escrita imagética
Creators: name: Ventura, Lidnei
Publisher: name: Labfront/UEMG
Year: 2023

description: Discute-se no presente trabalho o modo de pensar, pesquisar e escrever disruptivo apresentado na obra de Walter Benjamin, imagens do pensamento (Bilddenken), enquanto organon de cognoscibilidade. Enquanto que a tradição científico-filosófica ocidental encontra-se indelevelmente marcada por uma cognoscibilidade do tipo more geométrico, que fragmenta o processo de investigação da sua apresentação (Darstellung), Benjamin (2016) propõe a superação desta cisão com a engenhosidade de  uma escrita figurativa (Schriftbild), na qual imagens e palavra encontram-se amalgamadas numa relação dialética, não se tratando de submissão da escrita à imagem, nem desta à primeira, mas de uma relação de mutualidade entre o pensamento e sua forma de expressão que, para o autor, é essencialmente imagética e alegórica. Esse foi o método de pensamento, pesquisa e apresentação da tese de doutorado intitulada “O voo da fênix: narrativas de travessias de identidade de egressas da educação a distância”, defendida em 2019 pelo autor, inspirado na hermenêutica fragmentária benjaminiana.
SenseMag: Enabling Low-Cost Traffic Monitoring using Non-invasive Magnetic Sensing
Creators: name: Wang, Kafeng
name: Xiong, Haoyi
name: Zhang, Jie
name: Chen, Hongyang
name: Dou, Dejing
name: Xu, Cheng-Zhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The operation and management of intelligent transportation systems (ITS), such as traffic monitoring, relies on real-time data aggregation of vehicular traffic information, including vehicular types (e.g., cars, trucks, and buses), in the critical roads and highways. While traditional approaches based on vehicular-embedded GPS sensors or camera networks would either invade drivers' privacy or require high deployment cost, this paper introduces a low-cost method, namely SenseMag, to recognize the vehicular type using a pair of non-invasive magnetic sensors deployed on the straight road section. SenseMag filters out noises and segments received magnetic signals by the exact time points that the vehicle arrives or departs from every sensor node. Further, SenseMag adopts a hierarchical recognition model to first estimate the speed/velocity, then identify the length of vehicle using the predicted speed, sampling cycles, and the distance between the sensor nodes. With the vehicle length identified and the temporal/spectral features extracted from the magnetic signals, SenseMag classify the types of vehicles accordingly. Some semi-automated learning techniques have been adopted for the design of filters, features, and the choice of hyper-parameters. Extensive experiment based on real-word field deployment (on the highways in Shenzhen, China) shows that SenseMag significantly outperforms the existing methods in both classification accuracy and the granularity of vehicle types (i.e., 7 types by SenseMag versus 4 types by the existing work in comparisons). To be specific, our field experiment results validate that SenseMag is with at least $90\%$ vehicle type classification accuracy and less than 5\% vehicle length classification error.
description: Accepted by IEEE Internet of Things Journal
The contact conductance of a one-dimensional wire partly embedded in a superconductor
Creators: name: Matthews, Raphael
name: Agam, Oded
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The conductance through a semi-infinite one-dimensional wire, partly embedded in a superconducting bulk electrode, is studied. When the electron-electron interactions within the wire are strongly repulsive, the wire effectively decouples from the superconductor. If they are moderately or weakly repulsive, the proximity of the superconductor induces superconducting order in the segment of the wire embedded in it. In this case it is shown that the conductance exhibits a crossover from conductive to insulating behavior as the temperature is lowered down. The characteristic crossover temperature of this transition has a stretched exponential dependence on the length of the part of the wire embedded in the superconductor. The amount of this stretch is determined by the nature of the electron interactions within the wire.
description: 8 pages, 4 figures
Performance of colocasia (Colocasia esculenta L.) genotypes for growth, yield and quality attributes under hill zone of Karnataka
Creators: name: Sangeeta, Dr. Devaraju
Publisher: name: Zenodo
Year: 2021
Subjects: Colocasia, Corm, Growth, Yield, Quality

description: Taro (Colocasia esculenta L. Schott) is an herbaceous perennial tuber bearing plant belongs to the monocotyledonous family Araceae. It is grown throughout the tropics and sub-tropics and is also known as "Potato of the Tropics".
 Performance of genotypes varies with region, season and growing conditions. Colocasia is not being commercially grown in hill zone of Karnataka due to lack of suitable varieties and standard production technologies. Under given agro-climatic conditions, it is important to study the performance of varieties and to identify the best genotypes of colocasia with desirable characteristics.
Modeling the RXTE light curve of $η$ Carinae from a 3-D SPH simulation of its binary wind collision
Creators: name: Okazaki, A. T.
name: Owocki, S. P.
name: Russell, C. M.
name: Corcoran, M. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The very massive star system $η$ Carinae exhibits regular 5.54-year (2024-day) period disruptive events in wavebands ranging from the radio to X-ray. There is a growing consensus that these events likely stem from periastron passage of an (as yet) unseen companion in a highly eccentric ($ε\sim 0.9$) orbit. This paper presents three-dimensional (3-D) Smoothed Particle Hydrodynamics (SPH) simulations of the orbital variation of the binary wind-wind collision, and applies these to modeling the X-ray light curve observed by the Rossi X-ray Timing Explorer (RXTE). By providing a global 3-D model of the phase variation of the density of the interacting winds, the simulations allow computation of the associated variation in X-ray absorption, presumed here to originate from near the apex of the wind-wind interaction cone. We find that the observed RXTE light curve can be readily fit if the observer's line of sight is within this cone along the general direction of apastron. Specifically, the data are well fit by an assumed inclination $i = 45^{\circ}$ for the orbit's polar axis, which is thus consistent with orbital angular momentum being along the inferred polar axis of the Homunculus nebula. The fits also constrain the position angle $ϕ$ that an orbital-plane projection makes with the apastron side of the semi-major axis, strongly excluding positions $ϕ< 9^{\circ}$ along or to the retrograde side of the axis, with the best fit position given by $ϕ= 27^{\circ}$. Overall the results demonstrate the utility of a fully 3-D dynamical model for constraining the geometric and physical properties of this complex colliding-wind binary system.
description: 5 pages, 4 figures, accepted to MNRAS Letters
Frequency fluctuations of ferromagnetic resonances at milliKelvin temperatures
Creators: name: Wolz, Tim
name: McLellan, Luke
name: Stehli, Alexander
name: Schneider, Andre
name: Brehm, Jan David
name: Rotzinger, Hannes
name: Ustinov, Alexey V.
name: Weides, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Unwanted fluctuations over time, in short, noise, are detrimental to device performance, especially for quantum coherent circuits. Recent efforts have demonstrated routes to utilizing magnon systems for quantum technologies, which are based on interfacing single magnons to superconducting qubits. However, the coupling of several components often introduces additional noise to the system, degrading its coherence. Researching the temporal behavior can help to identify the underlying noise sources, which is a vital step in increasing coherence times and the hybrid device performance. Yet, the frequency noise of the ferromagnetic resonance (FMR) has so far been unexplored. Here, we investigate such FMR frequency fluctuations of a YIG sphere down to mK-temperatures, and find them independent of temperature and drive power. This suggests that the measured frequency noise in YIG is dominated by so far undetermined noise sources, which properties are not consistent with the conventional model of two-level systems, despite their effect on the sample linewidth. Moreover, the functional form of the FMR frequency noise power spectral density (PSD) cannot be described by a simple power law. By employing time-series analysis, we find a closed function for the PSD that fits our observations. Our results underline the necessity of coherence improvements to magnon systems for useful applications in quantum magnonics.
Comment on "Gauge Invariance and $k_T$-Factorization of Exclusive Processes"
Creators: name: Li, Hsiang-nan
name: Mishima, Satoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We point out mistakes made in the one-loop calculation of some diagrams for the process $πγ^* \to γ$ in the preprint arXiv:0807.0296, and present correct results. Especially, we have difficulty to understand their argument that a highly off-shell gluon generates a light-cone (infrared) singularity. It is shown by means of the Ward identity that the gauge-dependent light-cone singularity found in arXiv:0807.0296 does not exist. It is then shown that a hard kernel derived in the $k_T$ factorization of exclusive processes is gauge invariant and free of the light-cone singularity.
description: 7 pages, 5 figures, a co-author was added, new method was adopted, the conclusion remains the same
Additional file 2 of Microarray analysis reveals an inflammatory transcriptomic signature in peripheral blood for sciatica
Creators: name: Wang, Yi
name: Guogang Dai
name: Jiang, Ling
name: Shichuan Liao
name: Xia, Jiao
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 2 : Table S2. Differentially expressed genes in the peripheral blood between the patients with sciatica and the healthy controls. P: P-value; FC: fold change.
A 2D Levy-flight model for the complex dynamics of real-life financial markets
Creators: name: Yarahmadi, Hediye
name: Saberi, Abbas Ali
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We report on the emergence of scaling laws in the temporal evolution of the daily closing values of the S\&P 500 index prices and its modeling based on the Lévy flights in two dimensions (2D). The efficacy of our proposed model is verified and validated by using the extreme value statistics in random matrix theory. We find that the random evolution of each pair of stocks in a 2D price space is a scale-invariant complex trajectory whose tortuosity is governed by a $2/3$ geometric law between the gyration radius $R_g(t)$ and the total length $\ell(t)$ of the path, i.e., $R_g(t)\sim\ell(t)^{2/3}$. We construct a Wishart matrix containing all stocks up to a specific variable period and look at its spectral properties over 30 years. In contrast to the standard random matrix theory, we find that the distribution of eigenvalues has a power-law tail with a decreasing exponent over time -- a quantitative indicator of the temporal correlations. We find that the time evolution of the distance of a 2D Lévy flights with index $α=3/2$ from origin generates the same empirical spectral properties. The statistics of the largest eigenvalues of the model and the observations are in perfect agreement.
description: 5 figures, 9 pages
Manejo de hernia discal en un hurón (Mustela putorius furo) con medicina biorreguladora de sistemas. Reporte de caso clínico
Creators: name: Pachón Suaza, Elena
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 300904
subject: Veterinary diagnosis and diagnostics
classificationCode: 300999
subject: Veterinary sciences not elsewhere classified

description: La enfermedad de disco intervertebral en hurones domésticos (Mustela putorius furo) suele presentarse en proceso degenerativos de las estructuras; así como otras enfermedades neurológicas primarias. En ellos los trastornos neurológicos y musculoesqueléticos primarios son poco comunes, pero la manifestación de los signos clínicos es frecuente en enfermedades sistémicas. Esta patología se diagnostica con una adecuada anamnesis, examen físico exhaustivo, examen neurológico y ortopédico completo, radiografía, mielografía lumbar (mielograma), tomografía computarizada, entre otros. Las escalas de evaluación utilizadas en este caso clínico fueron escala de Grimace, índice de Berthel y hemograma. El tratamiento convencional es realizar la hemilaminectomía por eso el pronóstico es reservado; por otro lado, las limitaciones de este caso clínico fueron no tener exámenes post-tratamiento para evaluar el hemograma, no cambio de dieta en lapso del tratamiento. Paciente Mustela putorius furo hembra, de 5 años, que ingreso a consulta por parecía o plejia bilateral en miembros posteriores, tenía cuadro hemático y resonancia magnética que evidencia hernia discal en L-1,L-2,L-3, L-4. La medicina biorreguladora a comparación de otras medicinas utiliza sustancias que tiene origen en los procesos vitales para llegar a un equilibrio, funcionamiento vital, entre otros, esto lo realiza de manera articulada en los aspectos físicos, mentales, emocionales de cada individuo, por ende se instaura el tratamiento con las tres fases (detoxifcación, inmunomoduladores y soporte de órganos) El paciente se manejó con estos principales biorreguladores: Lymphomyosot, Traummeel, Coenzyme compositum, Ubichinon compositum, Discus suis compositum. Finalmente se puede concluir que Los medicamentos utilizados en este caso tuvieron un efecto positivo y cumplieron con las expectativas y el objetivo de interpretar a un paciente como individual y una red de sistemas; a fn de que esta patología no solamente se tiene que tratar con cirugía sino abre la oportunidad de tratarlo de manera integral con medicina biorreguladora para futuros casos.
Microbial diversity in Mediterranean sponges as revealed by metataxonomic analysis
Creators: name: Esposito, Roberta
name: Ruocco, Nadia
name: Zagami, Giacomo
name: Bertolino, Marco
name: Sonnessa, Michele
name: Andreani, Federico
name: Crispi, Stefania
name: Zupo, Valerio
name: Costantini, Maria
Publisher: name: F1000 Research Limited
Year: 2021

description: In the present work, we firstly aimed at exploring the biodiversity of marine sponges from four different areas of the Mediterranean: Faro Lake in Sicily and “Porto Paone”, “Secca delle fumose”, “Punta San Pancrazio” in the Gulf of Naples. Eight sponge species were collected from these sites and identified by morphological analysis and amplification of several conserved molecular markers (18S and 28S RNA ribosomal genes, mitochondrial cytochrome oxidase subunit 1 and internal transcribed spacer). In order to analyse the bacterial diversity of symbiotic communities among these different sampling sites, we also performed a metataxonomic analysis through an Illumina MiSeq platform, identifying more than 1500 bacterial taxa. Amplicon Sequence Variants (ASVs) analysis revealed a great variability of the host-specifc microbial communities.
An alternative parameterisation for binary-lens caustic-crossing events
Creators: name: Cassan, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Microlensing events are being discovered and alerted by the two survey teams OGLE and MOA at an increasing rate. Around ten percent of these events involve binary lenses. Such events potentially contain much information on the physical properties of the observed binary systems, which can then be used for e.g. statistical studies on binary objects in the Galactic disk or bulge. However, such events are usually not straightforward to study, because the model equations are strongly non-linear and there are many local minima that can fool the search for the best solution if the parameter space is not inspected with great care. In this work an alternative parameterisation for the binary lens fitting problem is proposed, in which the parameters involved are defined to represent as closely as possible the caustic-crossing features observed in most binary lens light curves. Furthermore, we work out an extension of the method in order to make use of the straight line fold caustic approximation, when the latter applies for both the caustic entry and exit. We introduce an alternative parameterisation in order to confine the exploration of the parameter space to regions where the models only involve caustic crossing at the dates seen in the light curve. We find that the proposed parameterisation provides more robustness to the light curve fitting process, in particular in avoiding a code to get stuck in false minima.
description: 10 pages, 3 figures, A&A in press
title: Қазақ тілі. Тесттер жинағы
Creators: name: ELS IPR BOOKS
Publisher: name: EDP Hub (Идипи Хаб), Ай Пи Ар Медиа
Year: 2024

description: Бұл практикумда «Қазақ тілі» білім беру бағдарламасы бойынша «Қазақ тілі» пәні бойынша тестілеуге дайындалу үшін тест сұрақтары мен әдістемелік ұсынымдар ұсынылған. Студенттерді аралық және қорытынды аттестаттауға дайындау үшін бірнеше таңдаулы тесттер жинағы ұсынылады.
Decolonizing engineering education in Nigerian higher education
Creators: name: Fomunyam, Dr. Kehdinga George
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2021
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Manifestation of western views above the culturally accepted standards in the society has been a major topical issue and over the year’s African countries have been heavily influenced by western cultures which permeated their religion by the early missionaries and the Trans-Atlantic slave trade that was predominant then. These western influence is prevalent in engineering education and it affects the discipline. Engineering education is important for national development and competitiveness and it is vital in terms of supply of electricity, water, roads, telecommunication, transportation, factories, machineries. This paper explores decolonization as a concept and a panacea to the challenges of engineering education in Nigeria, stressing the need to decolonize the discipline. The research was a theoretical study as it relied on relevant literature to address the topic under consideration. The findings of the study revealed that engineering education in Nigeria is constrained by lots of challenges which include fallen standards, obsolete curriculum, poor funding, inadequate infrastructure which affect the conduct of the discipline. It was also revealed that the engineering legacy the British bequeathed to Nigeria has continued without much change to it and there is therefore a need to decolonize engineering education in Nigeria. There is therefore the need to decolonize the curriculum, the teaching and learning approach, the language. The ministry of education must also coordinate with other engineering bodies to ensure that the curriculum is reviewed to suit the culture of the country.
title: Қазақ тілі. Тесттер жинағы
Creators: name: ELS IPR BOOKS
Publisher: name: EDP Hub (Идипи Хаб), Профобразование
Year: 2024

description: Бұл практикумда «Қазақ тілі» білім беру бағдарламасы бойынша «Қазақ тілі» пәні бойынша тестілеуге дайындалу үшін тест сұрақтары мен әдістемелік ұсынымдар ұсынылған, бірнеше таңдаулы тесттер жинағы ұсынылады. Аралық және қорытынды аттестаттауға дайындық кезінде ТжКБ студенттеріне ұсынылады.
JAMES SPENCE (1921-2013)
Creators: name: Project Team, Their Finest Hour
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: JAMES SPENCE (1921-2013)Gillian Spence has submitted printed and illustrated biographical information about her father James Spence's military service.
Morphological characterization of Tomato (Solanum lycopersicum)
Creators: name: M. P. Athulya
name: P. Anitha
Publisher: name: Zenodo
Year: 2021
Subjects: characterization, accessions, morphological, tomato

description: Tomato (Solanum esculentum L.) is the second most consumed vegetable of the world after potato and is used in various ways like for fresh market, processing, and also forms an integral part of protected cultivation as the crop is self-pollinated and have indeterminate forms. The variability present in the population is crucial for utilizing them in the breeding programs. The genetic variability and diversity among the plants can be assessed using morphological, biochemical and molecular markers, the former being the most cost effective and easily accessible. The present investigation was undertaken with the aim of morphological characterizing of tomato genotypes collected from diverse breeding environments. The study was in the department of Vegetable Science, College of Agriculture, Thrissur. The experimental material (18 accessions) comprised of exotic lines, varieties and improved lines, laid out in RBD with two replications. Characterization based on 18 qualitative characters by IPGRI, revealed significant variation among the genotypes. Determinate growth habit was noted in 18 genotypes while, 7 were semi determinate. Potato leaves and standard leaves were observed in seven accessions each while peruvianum types found in 4 accessions. Dense foliage was observed 5 accessions, sparse foliage in 2 and intermediate foliage in 1 accession. All the accessions produced perfect flowers with yellow coloured corolla and an open corolla blossom type. Oblate or flattened fruit shape were seen in two accessions, whereas, slightly flattened fruits were observed in 7 accessions. Three had round shaped fruits while, high round fruit were seen in six accessions. Nine genotypes produced greenish-white fruits at immature stage, while seven produced light green and one produced green. Fifteen accessions produced red coloured fruits on maturity while three gave orange coloured fruits. Two accessions produced fruits with prominent green shoulders. Fruit shoulder shape varied from flat, slightly depressed and moderately depressed. Four accessions showed flat shoulder, whereas, five had moderately depressed and nine showed slightly depressed fruit shoulder. Fruit cross-sectional shape was categorized into rounded and irregular shape in the study. All accessions produced fruits with round cross section whereas, angular shape was the unique character of LE19. Four different shaped pistil scars namely dot, stellate, linear and irregular were observed. Flat blossom end was observed in all the eighteen genotypes. Fruit cracking was observed in two accessions namely LE 32 and LE 22. Concentric and radial cracking were seen in the fruits of LE 32 and LE 22 respectively.
Deeply Virtual Compton Scattering off the neutron
Creators: name: Mazouz, M.
name: Camsonne, A.
name: Camacho, C. Muñoz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The present experiment exploits the interference between the Deeply Virtual Compton Scattering (DVCS) and the Bethe-Heitler processes to extract the imaginary part of DVCS amplitudes on the neutron and on the deuteron from the helicity-dependent D$({\vec e},e'γ)X$ cross section measured at $Q^2$=1.9 GeV$^2$ and $x_B$=0.36. We extract a linear combination of generalized parton distributions (GPDs) particularly sensitive to $E_q$, the least constrained GPD. A model dependent constraint on the contribution of the up and down quarks to the nucleon spin is deduced.
description: Published in Phys. Rev. Lett
Regularizing Variational Autoencoder with Diversity and Uncertainty Awareness
Creators: name: Shen, Dazhong
name: Qin, Chuan
name: Wang, Chao
name: Zhu, Hengshu
name: Chen, Enhong
name: Xiong, Hui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: As one of the most popular generative models, Variational Autoencoder (VAE) approximates the posterior of latent variables based on amortized variational inference. However, when the decoder network is sufficiently expressive, VAE may lead to posterior collapse; that is, uninformative latent representations may be learned. To this end, in this paper, we propose an alternative model, DU-VAE, for learning a more Diverse and less Uncertain latent space, and thus the representation can be learned in a meaningful and compact manner. Specifically, we first theoretically demonstrate that it will result in better latent space with high diversity and low uncertainty awareness by controlling the distribution of posterior's parameters across the whole data accordingly. Then, without the introduction of new loss terms or modifying training strategies, we propose to exploit Dropout on the variances and Batch-Normalization on the means simultaneously to regularize their distributions implicitly. Furthermore, to evaluate the generalization effect, we also exploit DU-VAE for inverse autoregressive flow based-VAE (VAE-IAF) empirically. Finally, extensive experiments on three benchmark datasets clearly show that our approach can outperform state-of-the-art baselines on both likelihood estimation and underlying classification tasks.
การศึกษาความหลากหลายทางพันธุกรรมของกล้วยสกุลมิวซาด้วยเทคนิคแฮตอาร์เอพีดี (Study on Genetic Diversity of  Musa  by Using High Annealing Temperature Random Amplified Polymorphic DNA Technique)
Creators: name: ฐิติพร โท้มโสภา
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: genetic diversity, Musa, HAT-RAPD

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
BIOFORTIFICATION IN VEGETABLE CROPS - A REVIEW
Creators: name: MERIN ELZA GEORGE
name: SARADA S
Publisher: name: Zenodo
Year: 2021
Subjects: Biofortification, Malnutrition, Plant breeding

description: BIOFORTIFICATION IN VEGETABLE CROPS – A REVIEW Merin, E. G.* and Sarada, S College of Agriculture, Kerala Agricultural University, Trivandrum, Kerala ABSTRACT Increasing population, inadequate food and nutrition, hunger, malnourishment of vitamins and micronutrients etc. are the greatest challenges faced by most of the nations across the world. According to Global nutrition report 2017, India carries a serious burden of anemia, obesity and malnutrition. Iodine, vitamin A, iron, and zinc malnutrition are major concerns in world. Biofortification refers to the nutrient enrichment of crops to address the negative economic and health consequences of vitamin and mineral deficiencies in humans. Biofortified crops are of increased content of essential micronutrients (minerals and vitamins) and produced through agronomic practices, plant breeding and genetic engineering. Cumulatively, more than 150 biofortified varieties of 10 crops have been released in 30 countries. Agronomic biofortification is the application of micronutrient-containing mineral fertilizer to the soil and/or plant leaves, to increase micronutrient contents of the edible part of food crops. In plant breeding, parent lines with high vitamin or mineral levels can be crossed over several generations to produce plants that have the desired nutrients. Transgenic approaches have been used in vegetable crops to improve traits such as higher nutritional status, to reduce anti-nutritional factors etc. No single intervention will alleviate micronutrient deficiencies, and biofortification complements existing interventions, such as supplementation and industrial food fortification. In order to achieve the goals of biofortification there is need for promoting large-scale prospective studies on nutritional aspects and productivity along with consumer preference. The studies must also be in collaboration with plant breeders, molecular biologists and nutrition scientists. KEY WORDS: Biofortification, Malnutrition, Plant breeding * - corresponding author- merinelzageorge5010@gmail.com
Conservation and management of underutilized fruit genetic resources in Himalayan region for food and nutritional security
Creators: name: Ms. Zahwa Jan
Publisher: name: Zenodo
Year: 2021
Subjects: Underutilized, Himalayan, Food Security, Biodiversity, Conservation

description: In an immensely growing global world, eradicating hunger and poverty is not only an ethical imperative but an important prerequisite for peace and world security which can be met, among other measures by rescuing and using more diversity in agricultural and food production systems. India is one of the mega biodiversity rich countries with only 2.4% land area, accounting for 7.8% of all the recorded species on this planet and ranks 10th in world and 4th in Asia in plant diversity. Within the country, Himalayan region encompasses a wide array of plant genetic resources due to its diverse climatic conditions. India’s recognition as a ‘mega-biodiversity’ country derives partly from the Himalayas wherein out of 6000 endemic plant species, 2532 species occur. Some important fruit genera of Himalayan belt are Rubus, Ribes, Pyrus, Frageria Grewia, Ziziphus, Flacourtia, Carrissa, Mangifera, Syzigium, Garcinia, Citrus and Vitis. However, most of these species are in a state of neglect and are rendered “Underutilized” by the fact that even though they are locally abundant, but restricted to their geographical location with dearth of scientific knowledge about them. These fruits contribute towards the food and nutritional security and also income generation in local areas. Conservation of wild species and domesticated diversity is immensely important. Not they only provide livelihood to the local people but may have genes for biotic and abiotic potential for use in future breeding program. This richness of species and genetic diversity provides many opportunities, which can be achieved through appropriate management of this diversity. In the situation of climate change and depletion of natural resources, the challenges are more to feed growing population, so efforts are required for exploring the unexplored areas for collection of horticultural biodiversity for conservation and utilization for the benefit of mankind.