cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 4 of Leveraging breeding programs and genomic data in Norway spruce (Picea abies L. Karst) for GWAS analysis
Creators: name: Chen, Zhi-Qiang
name: Zan, Yanjun
name: Milesi, Pascal
name: Zhou, Linghua
name: Chen, Jun
name: Li, Lili
name: Cui, BinBin
name: Niu, Shihui
name: Westin, Johan
name: Karlsson, Bo
name: García-Gil, Maria Rosario
name: Lascoux, Martin
name: Wu, Harry X.
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4. Review history.
Extreme ultraviolet emission from dense plasmas generated with sub-10-fs laser pulses
Creators: name: Osterholz, J.
name: Brandl, F.
name: Cerchez, M.
name: Fischer, T.
name: Hemmers, D.
name: Hidding, B.
name: Pipahl, A.
name: Pretzler, G.
name: Rose, S. J.
name: Willi, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The extreme ultraviolet (XUV) emission from dense plasmas generated with sub-10-fs laser pulses with varying peak intensities up to 3*10^16 W/cm^2 is investigated for different target materials. K shell spectra are obtained from low Z targets (carbon and boron nitride). In the spectra a series limit for the hydrogen and helium like resonance lines is observed indicating that the plasma is at high density and pressure ionization has removed the higher levels. In addition, L shell spectra from titanium targets were obtained. Basic features of the K and L shell spectra are reproduced with computer simulations. The calculations include hydrodynamic simulation of the plasma expansion and collisional radiative calculations of the XUV emission.
description: 22 pages, 11 figures. The following article has been submitted to Physics of Plasmas. After it is published, it will be found at http://pop.aip.org/
Canadian Gallup Poll # 765T
Creators: name: Inc., The Canadian Gallup Poll
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Upcoming federal election: issues, vote(5); past elections vote(1); Toronto area issues(9); perceptions of major political leaders(6); party identification(2). Note: Demographics reduced: age, religion, ethnicity, income; sex, region(6).
Additional file 5 of What influences the implementation of kangaroo mother care? An umbrella review
Creators: name: Cai, Qian
name: Chen, Dan-Qi
name: Wang, Hua
name: Zhang, Yue
name: Yang, Rui
name: Xu, Wen-Li
name: Xu, Xin-Fen
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Science Policy

description: Additional file 5. Risk of Bias analysis using ROBIS tool.
Thermoresponsive Shape-Memory Hydrogel Actuators Made by Phototriggered Click Chemistry
Creators: name: Maiti, Binoy
name: Abramov, Alex
name: Franco, Lourdes
name: Diaz Diaz, David
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: RESPONSIVE POLYMERS; TUNABLE LCST; PH; SYSTEMS; hydrogels; membranes; photoclick; polymers; shape-memory; thermoresponsive
subject: 540 Chemie

description: This article describes the design and synthesis of a new series of hydrogel membranes composed of trialkyne derivatives of glycerol ethoxylate and bisphenol A diazide (BA-diazide) or diazide-terminated PEG600 monomer via a Cu(I)-catalyzed photoclick reaction. The water-swollen hydrogel membranes display thermoresponsive actuation and their lower critical solution temperature (LCST) values are determined by differential scanning calorimetry. Glycerol ethoxylate moiety serves as the thermoresponsive component and hydrophilic part, while the azide-based component acts as the hydrophobic comonomer and most likely provides a critical hydrophobic/hydrophilic balance contributing also to the significant mechanical strength of the membranes. These hydrogels exhibit a reversible shape-memory effect in response to temperature through a defined phase transition. The swelling and deswelling behavior of the membranes are systematically examined. Due to the click nature of the reaction, easy availability of azide and alkyne functional-monomers, and the polymer architecture, the glass transition temperature (T-g) is easily controlled through monomer design and crosslink density by varying the feed ratio of different monomers. The mechanical properties of the membranes are studied by universal tensile testing measurements. Moreover, the hydrogels show the ability to absorb a dye and release it in a controlled manner by applying heat below and above the LCST.
O'ZBEKISTON RESPUBLIKASIDA JISMONIY TARBIYA VA BOLALAR SPORTINI RIVOJLANTIRISH
Creators: name: Julbekov, Baxrom
Publisher: name: Zenodo
Year: 2023

description: Mazkur mаqоlаdа О`zbekіstоndа mustаqіllіknіng dаstlаbkі dаvrіdаn tо bugungа qаdаr bоlаlаr spоrtіnі rіvоjlаntіrіshnіng yо`nаlіshlаrі, іjtіmоіy аhаmіyаtі yоrіtіlаdі.
Directed abelian algebras and their applications to stochastic models
Creators: name: Alcaraz, Francisco C.
name: Rittenberg, Vladimir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: To each directed acyclic graph (this includes some D-dimensional lattices) one can associate some abelian algebras that we call directed abelian algebras (DAA). On each site of the graph one attaches a generator of the algebra. These algebras depend on several parameters and are semisimple. Using any DAA one can define a family of Hamiltonians which give the continuous time evolution of a stochastic process. The calculation of the spectra and ground state wavefunctions (stationary states probability distributions) is an easy algebraic exercise. If one considers D-dimensional lattices and choose Hamiltonians linear in the generators, in the finite-size scaling the Hamiltonian spectrum is gapless with a critical dynamic exponent $z = D$. One possible application of the DAA is to sandpile models. In the paper we present this application considering one and two dimensional lattices. In the one dimensional case, when the DAA conserves the number of particles, the avalanches belong to the random walker universality class (critical exponent $σ_τ = 3/2$). We study the local densityof particles inside large avalanches showing a depletion of particles at the source of the avalanche and an enrichment at its end. In two dimensions we did extensive Monte-Carlo simulations and found $σ_τ = 1.782 \pm 0.005$.
description: 14 pages, 9 figures
Enumeration of maps with self avoiding loops and the O(n) model on random lattices of all topologies
Creators: name: Borot, G.
name: Eynard, B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 05Axx

description: We compute the generating functions of a O(n) model (loop gas model) on a random lattice of any topology. On the disc and the cylinder, they were already known, and here we compute all the other topologies. We find that the generating functions (and the correlation functions of the lattice) obey the topological recursion, as usual in matrix models, i.e they are given by the symplectic invariants of their spectral curve.
description: pdflatex, 89 pages, 12 labelled figures (15 figures at all), minor corrections
Axisymmetric models for galaxies by equipotential and equidensity methods
Creators: name: Jiang, Zhenglu
name: Fang, Daoyuan
name: Moss, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we outline equipotential and equidensity methods of constructing axisymmetric models for galaxies. The former method defines equipotentials, from which the corresponding densities of the galaxy models can be obtained using Poisson's equation; the latter defines the equidensity surfaces of the galaxy models directly.
Diffusion limit of the Vlasov equation in the weak turbulent regime
Creators: name: Bardos, Claude
name: Besse, Nicolas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper we study the Hamiltonian dynamics of charged particles subject to a non-self-consistent stochastic electric field, when the plasma is in the so-called weak turbulent regime. We show that the asymptotic limit of the Vlasov equation is a diffusion equation in the velocity space, but homogeneous in the physical space. We obtain a diffusion matrix, quadratic with respect to the electric field, which can be related to the diffusion matrix of the resonance broadening theory and of the quasilinear theory, depending on whether the typical autocorrelation time of particles is finite or not. In the self-consistent deterministic case, we show that the asymptotic distribution function is homogenized in the space variables, while the electric field converges weakly to zero. We also show that the lack of compactness in time for the electric field is necessary to obtain a genuine diffusion limit. By contrast, the time compactness property leads to a "cheap" version of the Landau damping: the electric field converges strongly to zero, implying the vanishing of the diffusion matrix, while the distribution function relaxes, in a weak topology, towards a spatially homogeneous stationary solution of the Vlasov-Poisson system.
Continuity and Stability of Partial Entropic Sums
Creators: name: Rastegin, Alexey E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 94A17, 60E15, 46N50

description: Extensions of Fannes' inequality with partial sums of the Tsallis entropy are obtained for both the classical and quantum cases. The definition of kth partial sum under the prescribed order of terms is given. Basic properties of introduced entropic measures and some applications are discussed. The derived estimates provide a complete characterization of the continuity and stability properties in the refined scale. The results are also reformulated in terms of Uhlmann's partial fidelities.
description: 9 pages, no figures. Some explanatory and technical improvements are made. The bibliography is extended. Detected errors and typos are corrected
General Flattened Jaffe Models for Galaxies
Creators: name: Jiang, Zhenglu
name: Fang, Daoyuan
name: Liu, Hongxia
name: Moss, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we extend oblate and prolate Jaffe models into more general flattened Jaffe models. Since dynamical properties of oblate and prolate Jaffe Models have been studied by Jiang & Moss, they are not repeated here.
Renormalization Group and Effective Potential in Classically Conformal Theories
Creators: name: Meissner, Krzysztof A.
name: Nicolai, Hermann
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive a general formula for the RG improved effective (Coleman-Weinberg) potential for classically conformal models, applying it to several examples of physical interest, and in particular a model of QCD coupled via quarks to a colorless scalar field. The closed form expressions allow us to discuss the range of validity of the effective potential as well as the issue of `large logarithms' in a way different from previous such analyses. Remarkably, in all examples considered, convexity of the effective potential is restored by the RG improvement, or otherwise the potential becomes unstable. In the former case, symmetry breaking becomes unavoidable due to the appearance of an infrared barrier $Λ_{IR}$, which hints at a so far unsuspected link between $Λ_{QCD}$ and the scale of electroweak symmetry breaking.
description: 17 pages, 2 figures, formulas corrected, references added
What causes the absence of pulsations in Central Compact Objects in Supernova Remnants?
Creators: name: Wu, Qi
name: Pires, Adriana M.
name: Schwope, Axel
name: Xiao, Guang-Cheng
name: Yan, Shu-Ping
name: Ji, Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Most young neutron stars belonging to the class of Central Compact Objects in supernova remnants (CCOs) do not have known periodicities. We investigated seven such CCOs to understand the common reasons for the absence of detected pulsations. Making use of XMM-Newton, Chandra, and NICER observations, we perform a systematic timing and spectral analysis to derive updated sensitivity limits for both periodic signals and multi-temperature spectral components that could be associated with radiation from hotspots on the neutron star surface. Based on these limits, we then investigated for each target the allowed viewing geometry that could explain the lack of pulsations. We estimate it is unlikely ($< 10^{-6}$) to attribute that we do not see pulsations to an unfavorable viewing geometry for five considered sources. Alternatively, the carbon atmosphere model, which assumes homogeneous temperature distribution on the surface, describes the spectra equally well and provides a reasonable interpretation for the absence of detected periodicities within current limits. The unusual properties of CCOs with respect to other young neutron stars could suggest a different evolutionary path, as that proposed for sources experiencing episodes of significant fallback accretion after the supernova event.
description: Accepted for publication in RAA; 16 pages, 2 figures, and 9 tables
Light kaonic atoms: from "corrected" to "summed up" Deser formula
Creators: name: Shevchenko, N. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Accuracy of "corrected Deser" and "summed up Deser" formulas was checked for the $K^- p$ and $K^- d$ systems. It was found that the last one is much more accurate and should be used for connection the $1s$ level shift to the corresponding scattering length.
description: 3 pages, 2 tables; small changes in the text, several references were added
Computational design of locally resonant acoustic metamaterials
Creators: name: Roca, D.
name: Yago, D.
name: Cante, J.
name: Lloberas-Valls, O.
name: Oliver, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: The so-called Locally Resonant Acoustic Metamaterials (LRAM) are considered for the design of specifically engineered devices capable of stopping waves from propagating in certain frequency regions (bandgaps), this making them applicable for acoustic insulation purposes. This fact has inspired the design of a new kind of lightweight acoustic insulation panels with the ability to attenuate noise sources in the low frequency range (below 5000 Hz) without requiring thick pieces of very dense materials. A design procedure based on different computational mechanics tools, namely, (1) a multiscale homogenization framework, (2) model order reduction strategies and (3) topological optimization procedures, is proposed. It aims at attenuating sound waves through the panel for a target set of resonance frequencies as well as maximizing the associated bandgaps. The resulting design's performance is later studied by introducing viscoelastic properties in the coating phase, in order to both analyse their effects on the overall design and account for more realistic behaviour. The study displays the emerging field of Computational Material Design (CMD) as a computational mechanics area with enormous potential for the design of metamaterial-based industrial acoustic parts.
Hydrogen-poor superluminous stellar explosions
Creators: name: Quimby, R. M.
name: Kulkarni, S. R.
name: Kasliwal, M. M.
name: Gal-Yam, A.
name: Arcavi, I.
name: Sullivan, M.
name: Nugent, P.
name: Thomas, R.
name: Howell, D. A.
name: Nakar, E.
name: Bildsten, L.
name: Theissen, C.
name: Law, N.
name: Dekany, R.
name: Rahmer, G.
name: Hale, D.
name: Smith, R.
name: Ofek, E. O.
name: Zolkower, J.
name: Velur, V.
name: Walters, R.
name: Henning, J.
name: Bui, K.
name: McKenna, D.
name: Poznanski, D.
name: Cenko, S. B.
name: Levitan, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Supernovae (SNe) are stellar explosions driven by gravitational or thermonuclear energy, observed as electromagnetic radiation emitted over weeks or more. In all known SNe, this radiation comes from internal energy deposited in the outflowing ejecta by either radioactive decay of freshly-synthesized elements (typically 56Ni), stored heat deposited by the explosion shock in the envelope of a supergiant star, or interaction between the SN debris and slowly-moving, hydrogen-rich circumstellar material. Here we report on a new class of luminous SNe whose observed properties cannot be explained by any of these known processes. These include four new SNe we have discovered, and two previously unexplained events (SN 2005ap; SCP 06F6) that we can now identify as members. These SNe are all ~10 times brighter than SNe Ia, do not show any trace of hydrogen, emit significant ultra-violet (UV) flux for extended periods of time, and have late-time decay rates which are inconsistent with radioactivity. Our data require that the observed radiation is emitted by hydrogen-free material distributed over a large radius (~10^15 cm) and expanding at high velocities (>10^4 km s^-1). These long-lived, UV-luminous events can be observed out to redshifts z>4 and offer an excellent opportunity to study star formation in, and the interstellar medium of, primitive distant galaxies.
description: Accepted to Nature. Press embargoed until 2011 June 8, 18:00 UT
Collection of processed BVH motion files for the craft of Silk Weaving
Creators: name: Karuzaki, Effie
name: Partarakis, Nikolaos
name: Zabulis, Xenophon
name: Doulgeraki, Paraskevi
name: Evdaimon, Theodoros
Publisher: name: Zenodo
Year: 2022
Subjects: Mingei
Glass
Carafe Making
Glassblowing
CERFAV
3DModel

description: Documentation material from the Mingei project
Visibility study of graphene multilayer structures
Creators: name: Teo, Guoquan
name: Wang, Haomin
name: Wu, Yihong
name: Zhang, Jun
name: Guo, Zaibing
name: Ni, Zhenhua
name: Shen, Zexiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The visibility of graphene sheets on different types of substrates has been investigated both theoretically and experimentally. Although single layer graphene is observable on various types of dielectrics under an optical microscope, it is invisible when it is placed directly on most of the semiconductor and metallic substrates. We show that coating of a resist layer with optimum thickness is an effective way to enhance the contrast of graphene on various types of substrates and makes single layer graphene visible on most semiconductor and metallic substrates. Experiments have been performed to verify the results on quartz and NiFe-coated Si substrates. The results obtained will be useful for fabricating graphene-based devices on various types of substrates for electronics, spintronics and optoelectronics applications.
description: 22 pages, 8 figures, 1 table, to appear in JAP 103, 1 (2008)
NUTQ O'STIRISH VA BOLALAR ADABIYOTI FANIDAN BOLALARNI HIKOYA QILISHGA O'RGATISH BO'YICHA DIDAKTIK O'YINLAR O'TKAZISH
Creators: name: Islomova, Zarifa
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada nutq o`stіrіsh hamda hіkoya qіlіshga o`rgatіsh masalalarіnі bolalarga o`rgatіshda dіdaktіk o`yіnlardan foydalansh samaradorlіgі muhokama etіladі.
Stochastic boundary conditions for molecular dynamics simulations
Creators: name: Prusty, M.
name: Cheong, S. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this paper we develop a stochastic boundary conditions (SBC) for event-driven molecular dynamics simulations of a finite volume embedded within an infinite environment. In this method, we first collect the statistics of injection/ejection events in periodic boundary conditions (PBC). Once sufficient statistics are collected, we remove the PBC and turn on the SBC. In the SBC simulations, we allow particles leaving the system to be truly ejected from the simulation, and randomly inject particles at the boundaries by resampling from the injection/ejection statistics collected from the current or previous simulations. With the SBC, we can measure thermodynamic quantities within the grand canonical ensemble, based on the particle number and energy fluctuations. To demonstrate how useful the SBC algorithm is, we simulated a hard disk gas and measured the pair distribution function, the compressibility and the specific heat, comparing them against literature values.
description: 24 pages, 16 figures
5G NB-IoT via low density LEO Constellations
Creators: name: Sørensen, René Brandborg
name: Møller, Henrik Krogh
name: Koch, Per
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: 5G NB-IoT is seen as a key technology for providing truly ubiquitous, global 5G coverage (1.000.000 devices/km2) for machine type communications in the internet of things. A non-terrestrial network (NTN) variant of NB-IoT is being standardized in the 3GPP, which along with inexpensive and non-complex chip-sets enables the production of competitively priced IoT devices with truly global coverage. NB-IoT allows for narrowband single carrier transmissions in the uplink, which improves the uplink link-budget by as much as 16.8 dB over the 180 [kHz] downlink. This allows for a long range sufficient for ground to low earth orbit (LEO) communication without the need for complex and expensive antennas in the IoT devices. In this paper the feasibility of 5G NB-IoT in the context of low-density constellations of small-satellites carrying base-stations in LEO is analyzed and required adaptations to NB-IoT are discussed.
description: https://digitalcommons.usu.edu/smallsat/2021/all2021/198/
Feature learning for efficient ASR-free keyword spotting in low-resource languages
Creators: name: van der Westhuizen, Ewald
name: Kamper, Herman
name: Menon, Raghav
name: Quinn, John
name: Niesler, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We consider feature learning for efficient keyword spotting that can be applied in severely under-resourced settings. The objective is to support humanitarian relief programmes by the United Nations in parts of Africa in which almost no language resources are available. For rapid development in such languages, we rely on a small, easily-compiled set of isolated keywords. These keyword templates are applied to a large corpus of in-domain but untranscribed speech using dynamic time warping (DTW). The resulting DTW alignment scores are used to train a convolutional neural network (CNN) which is orders of magnitude more computationally efficient and suitable for real-time application. We optimise this neural network keyword spotter by identifying robust acoustic features in this almost zero-resource setting. First, we incorporate information from well-resourced but unrelated languages using a multilingual bottleneck feature (BNF) extractor. Next, we consider features extracted from an autoencoder (AE) trained on in-domain but untranscribed data. Finally, we consider correspondence autoencoder (CAE) features which are fine-tuned on the small set of in-domain labelled data. Experiments in South African English and Luganda, a low-resource language, show that BNF and CAE features achieve a 5% relative performance improvement over baseline MFCCs. However, using BNFs as input to the CAE results in a more than 27% relative improvement over MFCCs in ROC area-under-the-curve (AUC) and more than twice as many top-10 retrievals. We show that, using these features, the CNN-DTW keyword spotter performs almost as well as the DTW keyword spotter while outperforming a baseline CNN trained only on the keyword templates. The CNN-DTW keyword spotter using BNF-derived CAE features represents an efficient approach with competitive performance suited to rapid deployment in a severely under-resourced scenario.
description: 37 pages, 14 figures, Preprint accepted for publication in Computer Speech and Language
Relativistic diffusion
Creators: name: Haba, Z.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We discuss a relativistic diffusion in the proper time in an approach of Schay and Dudley. We derive (Langevin) stochastic differential equations in various coordinates.We show that in some coordinates the stochastic differential equations become linear. We obtain momentum probability distribution in an explicit form.We discuss a relativistic particle diffusing in an external electromagnetic field. We solve the Langevin equations in the case of parallel electric and magnetic fields. We derive a kinetic equation for the evolution of the probability distribution.We discuss drag terms leading to an equilibrium distribution.The relativistic analog of the Ornstein-Uhlenbeck process is not unique. We show that if the drag comes from a diffusion approximation to the master equation then its form is strongly restricted. The drag leading to the Tsallis equilibrium distribution satisfies this restriction whereas the one of the Juettner distribution does not. We show that any function of the relativistic energy can be the equilibrium distribution for a particle in a static electric field. A preliminary study of the time evolution with friction is presented. It is shown that the problem is equivalent to quantum mechanics of a particle moving on a hyperboloid with a potential determined by the drag. A relation to diffusions appearing in heavy ion collisions is briefly discussed.
description: 9 pages,some numerical factors corrected
Additional file 4 of Women’s cancers in China: a spatio-temporal epidemiology analysis
Creators: name: He, Rongxin
name: Zhu, Bin
name: Liu, Jinlin
name: Zhang, Ning
name: Zhang, Wei-Hong
name: Mao, Ying
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Cancer

description: Additional file 4: Table S4. The high-risk clusters of the breast, cervical and ovarian cancers among women in China (elliptic scanning window).
$κ$-deformed Dirac Equation
Creators: name: Harikumar, E.
name: Sivakumar, M.
name: Srinivas, N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a Dirac equation in $κ$-Minkowski spacetime and analyse its implications. This $κ$-deformed Dirac equation is expanded as a power series involving derivatives with respect to commutative coordinates and the deformation parameter, $a$. We show that the $κ$-deformation breaks the charge conjugation invariance but preserves parity and time reversal. We then study how the Hydrogen atom spectrum is modified due to the $κ$-deformation, applying perturbation theory. Using this, we obtain bounds on the deformation parameter $a$, which are few orders higher than the Planck length. We also show that the effects of deformation on the spectrum are distinct from that of Moyal deformation and generalized uncertainty principle.
description: 9 pages, title changed, paper revised and bound modified, one author added
Acceleration-extended Newton-Hooke symmetry and its dynamical realization
Creators: name: Liu, Fu-Li
name: Tian, Yu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Newton-Hooke group is the nonrelativistic limit of de Sitter (anti-de Sitter) group, which can be enlarged with transformations that describe constant acceleration, as well as central charges. We consider a higher order Lagrangian that is quasi-invariant under the acceleration-extended Newton-Hooke symmetry, and obtain the Schrödinger equation quantizing the Hamiltonian corresponding to its first order form. We show that the Schrödinger equation is invariant under the acceleration-extended Newton-Hooke transformations. We also discuss briefly the exotic conformal Newton-Hooke symmetry in 2+1 dimension.
description: 14 pages, revtex4; refs added, misleading statements revised, version to appear in Phys. Lett. A
Can retired galaxies mimic active galaxies? Clues from the Sloan Digital Sky Survey
Creators: name: Stasinska, G.
name: Asari, N. V.
name: Fernandes, R. Cid
name: Gomes, J. M.
name: Schlickmann, M.
name: Mateus, A.
name: Schoenell, W.
name: Sodre, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The classification of galaxies as star forming or active is generally done in the ([O III]/Hbeta, [N II]/Halpha) plane. The Sloan Digital Sky Survey (SDSS) has revealed that, in this plane, the distribution of galaxies looks like the two wings of a seagull. Galaxies in the right wing are referred to as Seyfert/LINERs, leading to the idea that non-stellar activity in galaxies is a very common phenomenon. Here, we argue that a large fraction of the systems in the right wing could actually be galaxies which stopped forming stars. The ionization in these "retired" galaxies would be produced by hot post-AGB stars and white dwarfs. Our argumentation is based on a stellar population analysis of the galaxies via our STARLIGHT code and on photoionization models using the Lyman continuum radiation predicted for this population. The proportion of LINER galaxies that can be explained in such a way is however uncertain. We further show how observational selection effects account for the shape of the right wing. Our study suggests that nuclear activity may not be as common as thought. If retired galaxies do explain a large part of the seagull's right wing, some of the work concerning nuclear activity in galaxies, as inferred from SDSS data, will have to be revised.
description: Accepted for publication in MNRAS
Direct determination of the solar neutrino fluxes from solar neutrino data
Creators: name: Gonzalez-Garcia, M. C.
name: Maltoni, Michele
name: Salvado, Jordi
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We determine the solar neutrino fluxes from a global analysis of the solar and terrestrial neutrino data in the framework of three-neutrino mixing. Using a Bayesian approach we reconstruct the posterior probability distribution function for the eight normalization parameters of the solar neutrino fluxes plus the relevant masses and mixing, with and without imposing the luminosity constraint. This is done by means of a Markov Chain Monte Carlo employing the Metropolis-Hastings algorithm. We also describe how these results can be applied to test the predictions of the Standard Solar Models. Our results show that, at present, both models with low and high metallicity can describe the data with good statistical agreement.
description: 24 pages, 1 table, 7 figures. Acknowledgments corrected
Decaying Sterile Neutrinos as a Heating Source in the Milky Way Center
Creators: name: Chan, M. H.
name: Chu, M. -C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent Chandra and Newton observations indicate that there are two-temperature components ($T \sim$ 8 keV, 0.8 keV) of the diffuse x-rays emitted from deep inside the center of Milky Way. We show that this can be explained by the existence of sterile neutrinos, which decay to emit photons that can be bound-free absorbed by the isothermal hot gas particles in the center of Milky Way. This model can account for the two-temperature components naturally as well as the energy needed to maintain the $\sim$ 8 keV temperature in the hot gas. The predicted sterile neutrino mass is between 16-18 keV.
description: Accepted by MNRAS with minor corrections
Distortion of the Poisson Bracket by the Noncommutative Planck Constants
Creators: name: Ruuge, Artur E.
name: van Oystaeyen, Freddy
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we introduce a kind of "noncommutative neighbourhood" of a semiclassical parameter corresponding to the Planck constant. This construction is defined as a certain filtered and graded algebra with an infinite number of generators indexed by planar binary leaf-labelled trees. The associated graded algebra (the classical shadow) is interpreted as a "distortion" of the algebra of classical observables of a physical system. It is proven that there exists a q-analogue of the Weyl quantization, where q is a matrix of formal variables, which induces a nontrivial noncommutative analogue of a Poisson bracket on the classical shadow.
Insufficiency of the Brauer-Manin obstruction applied to etale covers
Creators: name: Poonen, Bjorn
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G35, 14G05, 14G25, 14J20

description: Let k be any global field of characteristic not 2. We construct a k-variety X such that X(k) is empty, but for which the emptiness cannot be explained by the Brauer-Manin obstruction or even by the Brauer-Manin obstruction applied to finite etale covers.
description: 11 pages
Current conservation, screening and the magnetic moment of the $Δ$ resonance: 2. Formulation with quark degrees of freedom 3. Magnetic moment of the $Δ^o$ and $Δ^-$ resonances
Creators: name: Machavariani, A. I.
name: Faessler, Amand
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Our previous paper \cite{MFNEW} is generalized within the field theoretical formulation with the quark degrees of freedom \cite{HW,H,N,Z}, where pions and nucleons are treated as the bound systems of quarks. It is shown that relations generated by current conservation for the on shell $πN$ bremsstrahlung amplitude with composite nucleons and pions have the same form as in the usual quantum field theory \cite{IZ,BD} without quark degrees of freedom \cite{MFNEW}. Consequently, the model independent relations for the magnetic dipole moments of the $Δ^+$ and $Δ^{++}$ resonances in \cite{MFNEW} remain be the same in the quantum field theory with the quark degrees of freedom. These relations are extended for the magnetic dipole moments of the $Δ^o$ and $Δ^-$ resonances which are determined via the anomalous magnetic moment of the neutron $μ_n$ as $μ_{Δ^o}={{M_Δ}\over {m_p}} μ_n$ and $μ_{Δ^{-}}={3\over 2}μ_{Δ^o}$.
description: The second part of Preprint arXiv:nucl-th/0804.1322 2008; 17 pages 3 figures, 1 Table
A brief discussion on the tensile creep deformation behaviour of wrought single phase $γ$-TiAl
Creators: name: Saha, Mainak
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Creep deformation behaviour in single phase $γ$-TiAl alloy has been an extensively studied topic since the late 1970s. A lot of literatures have reported creep behaviour of $γ$-TiAl alloys, manufactured using different processing techniques. The present discussion revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase $γ$-TiAl alloy by Hayes et al and is aimed to develop an understanding of steady state creep, through strain vs strain rate and strain vs ln(strain rate) plots. Besides, it also attempts to study the variation of stress exponent with temperature between 760 and 900C and also, to determine activation energies using the two most common approaches, namely: Zener-Hollomon and Sherby-Dorn for stress levels of 69.4 and 103.4 MPa between 760 and 900C.
Stochastic local operations and classical communication equations and classification of even $n$ qubits
Creators: name: Li, X.
name: Li, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For any even $n$ qubits we establish four SLOCC equations and construct four SLOCC polynomials (not complete) of degree $2^{n/2}$, which can be exploited for SLOCC classification (not complete) of any even $n$ qubits. In light of the SLOCC equations, we propose several different genuine entangled states of even $n$ qubits and show that they are inequivalent to the $|GHZ>$, $|W>$, or $|l,n>$ (the symmetric Dicke states with $l$ excitations) under SLOCC via the vanishing or not of the polynomials. The absolute values of the polynomials can be considered as entanglement measures.
TAX POLICY CHALLENGES FOR MODERN ECONOMIES IN THE REALM OF INTELLECTUAL PROPERTY
Creators: name: Qudratov, Jahongir
Publisher: name: Zenodo
Year: 2023

description: Intellectual property (IP) has emerged as a cornerstone of contemporary economies, propelled by technological advancements, globalization, and a growing emphasis on innovation. This thesis conducts a comprehensive exploration of the intricate relationship between IP, economic growth, and taxation, specifically focusing on the challenges and opportunities inherent in taxing these intangible assets. As tax policy intersects with the intangible nature of IP, unique complexities arise, demanding a nuanced understanding of legal foundations, economic imperatives, and international frameworks.
Ultrastructural permeability of the murine muscle spindle capsular perineurium to electron microscopically demonstrable macromolecular tracers
Creators: name: Dow, Pierre Roger
Publisher: name: University of British Columbia
Year: 2010

description: The muscle spindle is invested by a capsule of continuous, multilayered perineural epithelium, creating a periaxial space around the intrafusal muscle fibres and their innervation. The ultrastructural permeability of the muscle spindle capsule was assessed in anterior tibialis muscles of adult mice after systemic injection of the exogenous protein tracer, horseradish peroxidase (HRP). After varying time intervals ranging from 2 to 240 minutes, anesthetized animals were systemically perfused with fixative. Muscles were then removed and processed by routine cytochemical methods in order to demonstrate the distribution of peroxidase activity. While bare capillaries were never encountered within the intracapsular periaxial space of the muscle spindle, they frequently and intimately abut against its outer perineural capsule. Two minutes after injection of HRP, reaction product was localized in capillary endothelial plasmalemmal vesicles, just prior to its accumulation in the tissue space immediately surrounding the subjacent capsular perineurium in the equatorial region. In the polar region of the muscle spindle capsule, however, there was evidence of reaction product in the periaxial space at the same two minute time period. Ten minutes after administration of the tracer, a small population of perineural vesicles contained HRP. At the 12.5 minute interval, the sarcolemmae and T-tubules of polar intrafusal muscle fibres were subsequently labelled. Equatorial (sensory) regions of muscle spindles appeared to be relatively less permeable to the entrance of the tracer than more distal polar regions. By 15 minutes post-injection, HRP was seen traversing the perineural capsule in equatorial zones; and by 30 minutes, perineural and Schwann cell phagocytosis of the exogenous protein was extensive.
Observed properties of FRII quasars and radio galaxies at z < 1.0
Creators: name: Mullin, L. M.
name: Riley, J. M.
name: Hardcastle, M. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a long-term observing project we have imaged a complete sample of FRII quasars and radio galaxies with z < 1.0 at high resolution and high sensitivity with the VLA and MERLIN. This sample of 98 sources includes 15 quasars, 11 broad line radio galaxies and 57 narrow line radio galaxies, allowing unification to be considered in terms of source morphological properties. Radio maps of all the targets have been presented in earlier papers. Here we carry out a systematic analysis of the properties of the jets, cores, lobes and hotspots of objects in the sample. The majority of the tests that we perform show that the data are consistent with a model in which quasars and broad-line radio galaxies are unified with narrow-line objects. Relativistic beaming is the main effect that determines the properties of kiloparsec-scale jets, and it may also have some effect on hotspots. However, some properties of the sample are difficult to account for in simple unified models.
description: 33 pages, 40 figures, 14 tables
Additional file 1 of Engineering transcription factor-based biosensors for repressive regulation through transcriptional deactivation design in Saccharomyces cerevisiae
Creators: name: Qiu, Chenxi
name: Chen, Xiaoxu
name: Rexida, Reheman
name: Shen, Yu
name: Qi, Qingsheng
name: Bao, Xiaoming
name: Hou, Jin
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Oligo-nucleotide primer sequences used to construct plasmids in this study. Table S2. Plasmids used in this study. Table S3. Strains used in this study. Figure S1: Characterization of xylose repression sensor in a minimal medium containing 2% glucose as the carbon source.
Pressure Study of Superconducting Oxypnictide LaFePO
Creators: name: Igawa, K.
name: Okada, H.
name: Arii, K.
name: Takahashi, H.
name: Kamihara, Y.
name: Hirano, M.
name: Hosono, H.
name: Nakano, S.
name: Kikegawa, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on an iron-based superconductor LaFePO. A steep increase in superconducting transition temperature (Tc) of LaFePO with dTc/dP > 4 K/GPa to a maximum of 8.8 K for P = 0.8 GPa was observed. These results are similar to isocrystalline LaFeAsO1-xFx system reported previously. X-ray diffraction measurements were also performed under high pressure up to 10 GPa, where linear compressibility ka and kc are presented.
description: 11 pages, 4 figures
Writhe formulas and antipodal points in plectonemic DNA configurations
Creators: name: Neukirch, S.
name: Starostin, E. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The linking and writhing numbers are key quantities when characterizing the structure of a piece of supercoiled DNA. Defined as double integrals over the shape of the double-helix, these numbers are not always straightforward to compute, though a simplified formula exists. We examine the range of applicability of this widely-used simplified formula, and show that it cannot be employed for plectonemic DNA. We show that inapplicability is due to a hypothesis of Fuller theorem that is not met. The hypothesis seems to have been overlooked in many works.
description: 20 pages, 7 figures, 47 references
The stellar mass versus stellar metallicity relation of star-forming galaxies at $1.6\le z\le3.0$ and implications for the evolution of the $α$-enhancement
Creators: name: Kashino, Daichi
name: Lilly, Simon J.
name: Renzini, Alvio
name: Daddi, Emanuele
name: Zamorani, Giovanni
name: Silverman, John D.
name: Ilbert, Olivier
name: Peng, Yingjie
name: Mainieri, Vincenzo
name: Bardelli, Sandro
name: Zucca, Elena
name: Kartaltepe, Jeyhan S.
name: Sanders, David B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We measure the relationship between stellar mass and stellar metallicity, the stellar mass--metallicity relation (MZR), for 1336 star-forming galaxies at $1.6\le z\le3.0$ (=2.2) using rest-frame far-ultraviolet spectra from the zCOSMOS-deep survey. High signal-to-noise composite spectra containing stellar absorption features are fit with population synthesis model spectra of a range of metallicity. We find stellar metallicities, which mostly reflect iron abundances, scaling as $(Z_{Fe,\ast}/Z_{Fe,\odot})=-(0.81\pm0.01)+(0.32+0.03)\log(M_\ast/10^{10}M_\odot)$ across the mass range of $10^9\lesssim M_\ast/M_\odot\lesssim10^{11}$, being $\approx6\times$ lower than seen locally at the same masses. The instantaneous oxygen-to-iron ratio ($α$-enhancement) inferred using the gas-phase oxygen MZRs, is on average found to be [O/Fe]$\approx0.47$, being higher than the local [O/Fe]$\approx0$. The observed changes in [O/Fe] and [Fe/H] are reproduced in simple flow-through gas-regulator models with steady star-formation histories (SFHs) that follow the evolving main sequence. Our models show that the [O/Fe] is determined almost entirely by the instantaneous specific star formation rate alone while being independent of the SFHs, mass, and the gas-regulation characteristics of the systems. We find that the locations of $\sim10^{10}M_\odot$ galaxies at z~2 in the [O/Fe]--metallicity planes are in remarkable agreement with the sequence of low-metallicity thick-disk stars in our Galaxy. This manifests a beautiful concordance between the results of Galactic archaeology and observations of high-redshift Milky Way progenitors. However, there remains a question of how and when the old metal-rich, low-$α$/Fe stars seen in the bulge had formed by z~2 because such a stellar population is not seen in our data and difficult to explain in the context of our models.
description: Submitted to ApJ; 30 pages, 20 figures