cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Racial Minority Lending Trends at the Farm Service Agency
Creators: name: Escalante, Cesar L.
name: Epperson, James E.
name: Stegelin, Forrest E.
name: Brooks, Rodney L.
name: Escalante, Cesar L.
name: Epperson, James E.
name: Stegelin, Forrest E.
name: Brooks, Rodney L.
Publisher: name: Unknown
Year: 2005
Subjects: Agricultural Finance

description: A binomial logistic framework is used to determine important linkages between the FSA's decision on each loan application and the applicants financial and demographic attributes. Using data on both rejected and accepted FSA loan applications, empirical results indicate loan approval decisions were not significantly influenced by the borrowers' racial class and that, in contrast to the credit risk assessment standards employed by commercial lenders, the collective influence of more stringent and objective credit scoring measures on FSA loan approval decisions is insignificant.
Dual form of the phase-space classical simulation problem in quantum optics
Creators: name: Semenov, A. A.
name: Klimov, A. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum optics, nonclassicality of quantum states is commonly associated with negativities of phase-space quasiprobability distributions. We argue that the impossibility of any classical simulations with phase-space functions is a necessary and sufficient condition of nonclassicality. The problem of such phase-space classical simulations for particular measurement schemes is analysed in the framework of Einstein-Podolsky-Rosen-Bell's principles of physical reality. The dual form of this problem results in an analogue of Bell inequalities. Their violations imply the impossibility of phase-space classical simulations and, as a consequence, nonclassicality of quantum states. We apply this technique to emblematic optical measurements such as photocounting, including the cases of realistic photon-number resolution and homodyne detection in unbalanced, balanced, and eight-port configurations.
description: 21 pages, 5 figures
Diffraction as a CP and Lineshape Analyzer for MSSM Higgs Bosons at the LHC
Creators: name: Ellis, John
name: Lee, Jae Sik
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the production and decay of a coupled system of mixed neutral MSSM Higgs bosons in exclusive double-diffractive processes at the LHC, including non-vanishing CP phases in the soft supersymmetry-breaking gaugino masses and third-generation trilinear squark couplings. The three neutral Higgs bosons are naturally nearly degenerate, for large values of \tanβ, when the charged Higgs boson weighs around 150 GeV. Large mixing between all three neutral Higgs bosons is possible when CP is violated, a three-way mixing scenario which we also term tri-mixing. A resolution in the Higgs mass of \sim 1 GeV, which may be achievable using the missing-mass method, would allow one to distinguish nearly degenerate Higgs bosons by studying the production lineshape. Measurements of the polarizations of the tau leptons coming from the Higgs-boson decays could offer a direct and observable signal of CP violation in the Higgs sector.
description: 18 pages, 5 EPS figures, a reference added, to appear in Phys. Rev. D
Effect of Urbanization on the Adoption of Environmental Management Systems in Canadian Agriculture
Creators: name: Deaton, Brady J.
name: Jayasinghe-Mudalige, Udith K.
name: Ramirez, Donna Theresa J.
name: Trant, Michael
name: Weersink, Alfons
name: Deaton, Brady J.
name: Jayasinghe-Mudalige, Udith K.
name: Ramirez, Donna Theresa J.
name: Trant, Michael
name: Weersink, Alfons
Publisher: name: Unknown
Year: 2005
Subjects: Farm Management

description: This study examines the extent to which farming practices have adjusted to the presence of urbanization in Canada. In particular, we compare the adoption rates for environmental management systems (EMSs) by farmers close to urbanized areas versus those in more rural, isolated regions. Using information from a national survey of 16,053 farmers, eight EMSs are considered. We find that farmers operating close to the urban milieu demonstrate strategic behavior by selecting more environmentally-friendly farm management practices to overcome social and regulatory pressures from such communities compared to those farmers that operate in rural communities.
Time-periodic measures, random periodic orbits, and the linear response for dissipative non-autonomous stochastic differential equations
Creators: name: Branicki, Michal
name: Uda, Kenneth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We consider a class of dissipative stochastic differential equations (SDE's) with time-periodic coefficients in finite dimension, and the response of time-asymptotic probability measures induced by such SDE's to sufficiently regular, small perturbations of the underlying dynamics. Understanding such a response provides a systematic way to study changes of statistical observables in response to perturbations, and it is often very useful for sensitivity analysis, uncertainty quantification, and for improving probabilistic predictions of nonlinear dynamical systems, especially in high dimensions. Here, we are concerned with the linear response to small perturbations in the case when the time-asymptotic probability measures are time-periodic. First, we establish sufficient conditions for the existence of stable random time-periodic orbits generated by the underlying SDE. Ergodicity of time-periodic probability measures supported on these random periodic orbits is subsequently discussed. Then, we derive the so-called fluctuation-dissipation relations which allow to describe the linear response of statistical observables to small perturbations away from the time-periodic ergodic regime in a manner which only exploits the unperturbed dynamics. The results are formulated in an abstract setting but they apply to problems ranging from aspects of climate modelling, to molecular dynamics, to the study of approximation capacity of neural~networks and robustness of their estimates.
Demand behavior of U.S. high fructose corn syrup (HFCS) and its implication for the U.S. sweetener market: a cointegration analysis
Creators: name: Lee, Dae-Seob
name: Kennedy, P. Lynn
name: Lee, Dae-Seob
name: Kennedy, P. Lynn
Publisher: name: Unknown
Year: 2005
Subjects: Demand and Price Analysis

description: This paper investigates the relationship between U.S. HFCS demand and refined sugar price. A cointegration analysis is utilized to investigate possible linkages between these markets. The coefficients on the ECM have the expected signs, and they measure adjustments towards long-run equilibrium. The study result also shows that there is cointegration in a relationship including, HFCS price, the refined sugar price, and income. the increase in HFCS demand would affect primarily the quantity of sugar imports negatively. However, this study does not necessarily support such a conclusion due to the exclusion of noneconomic factors such as change in consumer preference and health concern.
The Relationship between Farm Size and Productivity in Chinese Agriculture
Creators: name: Chen, Zhuo
name: Huffman, Wallace E.
name: Rozelle, Scott
name: Chen, Zhuo
name: Huffman, Wallace E.
name: Rozelle, Scott
Publisher: name: Unknown
Year: 2005
Subjects: Land Economics/Use

description: This paper examines the relationship between farm size and productivity in China's agriculture. In developing agriculture where there is a broad range of farm sizes, farm size and productivity or output per unit of land are often found to be inversely related. In China, where average farm size is small and the distribution of farm sizes is relatively compact, farm size and productivity are weakly inversely related. However, when we utilize the egalitarian principle during land allocation in China and use imputed homogenous land area rather than actual land area in the regression, the inverse relationship between farm size and productivity disappears. Hence, the strong inverse relationship that some studies have found are undoubtly due to a number of methodological problems, including the failure to account properly for land quality differences and the method of land distribution. Applying the principal agency theory, we also discuss the possibility that market inefficiency may contribute to the inverse relationship. We examine the necessity and validity (Hahn & Hausman 2002) of the instrumental estimation applied in the paper. The corresponding variance estimates are adjusted as Murphy & Topel (1985) suggested.
Stability conditions and Kleinian singularities
Creators: name: Bridgeland, Tom
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14J32, 18E30

description: We describe the spaces of stability conditions on certain triangulated categories associated to Dynkin diagrams. These categories can be defined either algebraically via module categories of preprojective algebras, or geometrically via coherent sheaves on resolutions of Kleinian singularities. The resulting spaces are related to regular subsets of the corresponding complexified Cartan algebras.
description: This version fills a gap in the proof of the main results pointed out by Michael Wemyss. The only changes are footnotes on pages 3,5 and the addition of Remark 3.7
Structural and Financial Characteristics of U.S. Farms, 1992: 17th Annual Family Farm Report to Congress
Creators: name: Kalbacher, Judith Z.
name: Oliveira, Victor J.
name: Kalbacher, Judith Z.
name: Oliveira, Victor J.
Publisher: name: Unknown
Year: 1995
Subjects: subject: Consumer/Household Economics
subject: Farm Management
subject: Financial Economics
subject: Land Economics/Use
subject: Farm Costs and Returns Survey
subject: farm structure
subject: farm financial situation
subject: farm operator household income

description: In 1992, the United States had about 2.1 million farms, 73 percent of which were classified as "small farms" with annual gross farm sales of less than $50,000. However, the 557,613 "commercial farms" (with $50,000 or more annual gross farm sales) accounted for 88 percent of total gross farm sales and 68 percent of the acres in farms. This information is included in the 17th Annual Family Farm Report to Congress, which provides annual data on the major structural and financial characteristics of U.S. farms as portrayed by USDA's Farm Costs and Returns Survey (FCRS).
The Impacts of Off-Farm Income on Farm Efficiency, Scale, and Profitability for Corn Farms
Creators: name: Nehring, Richard F.
name: Fernandez-Cornejo, Jorge
name: Nehring, Richard F.
name: Fernandez-Cornejo, Jorge
Publisher: name: Unknown
Year: 2005
Subjects: Farm Management

description: This paper estimates returns to scale and technical efficiency of corn farms following an input distance function approach and compares the relative performance of farm operator households with and without off-farm wages and salaries. We use 1995-2003 USDA data. The input distance function results suggest that off-farm outputs and inputs can be modeled in a multi-activity framework, which materially alter performance measures in the Corn Belt. We find that off-farm income boosts scale and technical efficiency of smaller operations. We also find that the number of hours worked off-farm by the spouse contributes to a higher technical efficiency.
On aspects of 2-dim dilaton gravity, dimensional reduction and holography
Creators: name: Narayan, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss aspects of generic 2-dimensional dilaton gravity theories. The 2-dim geometry is in general conformal to $AdS_2$ and has IR curvature singularities at zero temperature: this can be regulated by a black hole. The on-shell action is divergent: we discuss the holographic energy-momentum tensor by adding appropriate counterterms. For theories obtained by dimensional reduction of the gravitational sector of higher dimensional theories, for instance higher dimensional $AdS$ gravity as a concrete example, the 2-dimensional description dovetails with the higher dimensional one. We also discuss more general theories containing an extra scalar field which now drives nontrivial dynamics. Finally we discuss aspects of the 2-dimensional cosmological singularities discussed in earlier work. These studies suggest that generic 2-dim dilaton gravity theories are somewhat distinct from JT gravity and theories "near JT".
description: Latex, 21pgs, v2: references, minor clarifications added; v3: one error corrected, further clarifications added, version to be published
Single-cell sequencing of spleen from IMQ-induced IL-17B KO mice
Creators: name: 肖渝才
Publisher: name: CNGB
Year: 2026
Subjects: Transcriptome or Gene expression
Monoisolate

description: female C57BL/6, IL-17B KO mice (8 weeks old, n=6) were treated with 1.25 mg of 5% imiquimod cream, which was applied to the ear three times a week. After 10 weeks of treatment, all mice were sacrificed by inhalation of carbon dioxide. Spleen tissues from IMQ-treated IL-17B KO and wide-type mice were used to prepare single-cell suspensions, which were subsequently sent to OE Biotech (Shanghai, China) for scRNA-seq.
On some finiteness results in real étale cohomology
Creators: name: Jin, Fangzhou
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 14F08, 14F20, 14F42, 14F45, 14P25, 19E15, 32S60

description: We show that for quasi-compact quasi-separated schemes of finite dimension, the constructibility condition in real étale cohomology agrees with a notion of constructibility arising naturally from topology. As application we prove that the derived direct image functor preserves constructibility under some assumptions, and compute the Grothendieck group of the constructible rational stable motivic homotopy category for reasonable schemes. We prove the generic base change property for constructible real étale sheaves, and deduce the same property for rational motivic spectra and $b$-sheaves.
Comparing Heterogeneous Consumption in US and Japanese Meat and Fish Demand
Creators: name: Tonsor, Glynn T.
name: Marsh, Thomas L.
name: Tonsor, Glynn T.
name: Marsh, Thomas L.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Demand and Price Analysis
subject: US/Japanese meat demand
subject: demand forecasting
subject: food safety
subject: Generalized Almost Ideal Demand System
subject: pre-committed consumption

description: This article uses national, quarterly data to conduct an empirical analysis of pre-committed meat and fish demand by US and Japanese households using the Generalized Almost Ideal Demand System (GAIDS). US consumers are found to hold pre-committed demand for beef and pork, while Japanese consumers appear to possess significant pre-committed demand for beef and fish. This provides evidence to partly explain observed differences in Japanese and US consumer reactions to non-price and non-income effects in beef, pork, poultry, and fish. In addition, the first known empirical comparison of how the GAIDS and more traditional AIDS models assess meat and fish demand is offered with both in- and out-of-sample evaluations.
title: The visual control of interceptive steering: How do people steer a car to intercept a moving target?
Creators: name: Zhao, Huaiyong
name: Straub, Dominik
name: Rothkopf, Constantin A.
Publisher: name: UNSPECIFIED
Year: 2019

description: The visually guided interception of a moving target is a fundamental visuomotor task that humans can do with ease. But how humans carry out this task is still unclear despite numerous empirical investigations. Measurements of angular variables during human interception have suggested three possible strategies: the pursuit strategy, the constant bearing angle strategy, and the constant target-heading strategy. Here, we review previous experimental paradigms and show that some of them do not allow one to distinguish among the three strategies. Based on this analysis, we devised a virtual driving task that allows investigating which of the three strategies best describes human interception. Crucially, we measured participants' steering, head, and gaze directions over time for three different target velocities. Subjects initially aligned head and gaze in the direction of the car's heading. When the target appeared, subjects centered their gaze on the target, pointed their head slightly off the heading direction toward the target, and maintained an approximately constant target-heading angle, whose magnitude varied across participants, while the target's bearing angle continuously changed. With a second condition, in which the target was partially occluded, we investigated several alternative hypotheses about participants' visual strategies. Overall, the results suggest that interceptive steering is best described by the constant target-heading strategy and that gaze and head are coordinated to continuously acquire visual information to achieve successful interception.
A Novel Occupancy Mapping Framework for Risk-Aware Path Planning in Unstructured Environments
Creators: name: Laconte, Johann
name: Kasmi, Abderrahim
name: Pomerleau, François
name: Chapuis, Roland
name: Malaterre, Laurent
name: Debain, Christophe
name: Aufrère, Romuald
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences
subject: 68T40

description: In the context of autonomous robots, one of the most important tasks is to prevent potential damage to the robot during navigation. For this purpose, it is often assumed that one must deal with known probabilistic obstacles, then compute the probability of collision with each obstacle. However, in complex scenarios or unstructured environments, it might be difficult to detect such obstacles. In these cases, a metric map is used, where each position stores the information of occupancy. The most common type of metric map is the Bayesian occupancy map. However, this type of map is not well suited for computing risk assessments for continuous paths due to its discrete nature. Hence, we introduce a novel type of map called the Lambda Field, which is specially designed for risk assessment. We first propose a way to compute such a map and the expectation of a generic risk over a path. Then, we demonstrate the benefits of our generic formulation with a use case defining the risk as the expected collision force over a path. Using this risk definition and the Lambda Field, we show that our framework is capable of doing classical path planning while having a physical-based metric. Furthermore, the Lambda Field gives a natural way to deal with unstructured environments, such as tall grass. Where standard environment representations would always generate trajectories going around such obstacles, our framework allows the robot to go through the grass while being aware of the risk taken.
description: Published in the Special Issue "Frontiers in Mobile Robot Navigation" of Sensors. https://www.mdpi.com/1424-8220/21/22/7562
Ly-alpha and UV emission from high-redshift GRB hosts: To what extent do GRBs trace star formation?
Creators: name: Jakobsson, P.
name: Bjornsson, G.
name: Fynbo, J. P. U.
name: Johannesson, G.
name: Hjorth, J.
name: Thomsen, B.
name: Moller, P.
name: Watson, D.
name: Jensen, B. L.
name: Ostlin, G.
name: Gorosabel, J.
name: Gudmundsson, E. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the result of a search for Ly-alpha emission from the host galaxies of the gamma-ray bursts (GRBs) 030226 (z = 1.986), 021004 (z = 2.335) and 020124 (z = 3.198). We find that the host galaxy of GRB 021004 is an extended (around 8 kpc) strong Ly-alpha emitter with a restframe equivalent width (EW) of 68^{+12}_{-11} AA, and a star-formation rate of 10.6 +/- 2.0 M_sun/yr. We do not detect the hosts of GRB 030226 and GRB 020124, but the upper limits on their Ly-alpha fluxes do not rule out large restframe EWs. In the fields of GRB 021004 and GRB 030226 we find seven and five other galaxies, respectively, with excess emission in the narrow-band filter. These galaxies are candidate Ly-alpha emitting galaxies in the environment of the host galaxies. We have also compiled a list of all z > 2 GRB hosts, and demonstrate that a scenario where they trace star formation in an unbiased way is compatible with current observational constraints. Fitting the z=3 luminosity function (LF) under this assumption, results in a characteristic luminosity of R* = 24.6 and a faint end slope of alpha = -1.55, consistent with the LF measured for Lyman-break galaxies.
description: 8 pages, 5 figures. MNRAS, in press
Isotretinoin and Clindamycin Phosphate Combination Gel Preparation for Acne Treatment: Formulation and Stability Evaluation
Creators: name: Wijittra Malad
Publisher: name: Faculty of Pharmaceutical Sciences KKU MSU UBU
Year: 2011
Subjects: Clindamycin Phosphate, Isotretinoin, gel, stability

description: Isan Journal ofPharmaceutical Sciences, 7, 2, 12-21
Quantum chaos and ensemble inequivalence of quantum long-range Ising chains
Creators: name: Russomanno, Angelo
name: Fava, Michele
name: Heyl, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use large-scale exact diagonalization to study the quantum Ising chain in a transverse field with long-range power-law interactions decaying with exponent $α$. We numerically study various probes for quantum chaos and eigenstate thermalization {on} the level of eigenvalues and eigenstates. The level-spacing statistics yields a clear sign towards a Wigner-Dyson distribution and therefore towards quantum chaos across all values of $α>0$. Yet, for $α<1$ we find that the microcanonical entropy is nonconvex. This is due to the fact that the spectrum is organized in energetically separated multiplets for $α<1$. While quantum chaotic behaviour develops within the individual multiplets, many multiplets don't overlap and don't mix with each other, as we analytically and numerically argue. Our findings suggest that a small fraction of the multiplets could persist at low energies for $α\ll 1$ even for large $N$, giving rise to ensemble inequivalence.
description: 17 pages, 15 figures
Random field Ising model and community structure in complex networks
Creators: name: Son, Seung-Woo
name: Jeong, Hawoong
name: Noh, Jae Dong
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We propose a method to find out the community structure of a complex network. In this method the ground state problem of a ferromagnetic random field Ising model is considered on the network with the magnetic field $B_s = +\infty$, $B_{t} = -\infty$, and $B_{i\neq s,t}=0$ for a node pair $s$ and $t$. The ground state problem is equivalent to the so-called maximum flow problem, which can be solved exactly numerically with the help of a combinatorial optimization algorithm. The community structure is then identified from the ground state Ising spin domains for all pairs of $s$ and $t$. Our method provides a criterion for the existence of the community structure, and is applicable to unweighted and weighted networks equally well. We demonstrate the performance of the method by applying it to the Barabási-Albert network, Zachary karate club network, the scientific collaboration network, and the stock price correlation network.
description: 7 pages, 4 figures
Collective excitations in unconventional charge-density wave systems
Creators: name: Greco, A.
name: Zeyher, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The excitation spectrum of the t-J model is studied on a square lattice in the large $N$ limit in a doping range where a $d$-$density$-$wave$ (DDW) forms below a transition temperature $T^\star$. Characteristic features of the DDW ground state are circulating currents which fluctuate above and condense into a staggered flux state below $T^\star$ and density fluctuations where the electron and the hole are localized at different sites. General expressions for the density response are given both above and below $T^\star$ and applied to Raman, X-ray, and neutron scattering. Numerical results show that the density response is mainly collective in nature consisting of broad, dispersive structures which transform into well-defined peaks mainly at small momentum transfers. One way to detect these excitations is by inelastic neutron scattering at small momentum transfers where the cross section (typically a few per cents of that for spin scattering) is substantially enhanced, exhibits a strong dependence on the direction of the transferred momentum and a well-pronounced peak somewhat below twice the DDW gap. Scattering from the DDW-induced Bragg peak is found to be weaker by two orders of magnitude compared with the momentum-integrated inelastic part.
description: 10 pages, 8 figures
Möbius Strip Microlasers: a Testbed for Non-Euclidean Photonics
Creators: name: Song, Yalei
name: Monceaux, Yann
name: Bittner, Stefan
name: Chao, Kimhong
name: de la Cruz, Héctor M. Reynoso
name: Lafargue, Clément
name: Decanini, Dominique
name: Dietz, Barbara
name: Zyss, Joseph
name: Grigis, Alain
name: Checoury, Xavier
name: Lebental, Melanie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on experiments with Möbius strip microlasers which were fabricated with high optical quality by direct laser writing. A Möbius strip, i.e., a band with a half twist, exhibits the fascinating property that it has a single nonorientable surface and a single boundary. We provide evidence that, in contrast to conventional ring or disk resonators, a Möbius strip cavity cannot sustain whispering gallery modes (WGM). Comparison between experiments and 3D finite difference time domain (FDTD) simulations reveals that the resonances are localized on periodic geodesics.
Low T/|W| dynamical instability in differentially rotating stars: Diagnosis with canonical angular momentum
Creators: name: Saijo, Motoyuki
name: Yoshida, Shin'ichirou
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the nature of non-axisymmetric dynamical instabilities in differentially rotating stars with both linear eigenmode analysis and hydrodynamic simulations in Newtonian gravity. We especially investigate the following three types of instability; the one-armed spiral instability, the low T/|W| bar instability, and the high T/|W| bar instability, where T is the rotational kinetic energy and W is the gravitational potential energy. The nature of the dynamical instabilities is clarified by using a canonical angular momentum as a diagnostic. We find that the one-armed spiral and the low T/|W| bar instabilities occur around the corotation radius, and they grow through the inflow of canonical angular momentum around the corotation radius. The result is a clear contrast to that of a classical dynamical bar instability in high T/|W|. We also discuss the feature of gravitational waves generated from these three types of instability.
description: v1: 15 pages with 13 figures, mn2e.cls. Submitted to the Monthly Notices of the Royal Astronomical Society; v2: 16 pages with 17 figures, mn2e.cls. Monthly Notices of the Royal Astronomical Society (2006) in press
On the existence of three-dimensional hydrostatic and magnetostatic equilibria of self-gravitating fluid bodies
Creators: name: Galli, Daniele
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We develop an analytical spectral method to solve the equations of equilibrium for a self-gravitating, magnetized fluid body, under the only hypotheses that (a) the equation of state is isothermal, (b) the configuration is scale-free, and (c) the body is electrically neutral. All physical variables are represented as series of scalar and vector spherical harmonics of degree l and order m, and the equilibrium equations are reduced to a set of coupled quadratic algebraic equations for the expansion coefficients of the density and the magnetic vector potential. The method is general, and allows to recover previously known hydrostatic and magnetostatic solutions possessing axial symmetry. A linear perturbation analysis of the equations in spectral form show that these basic axisymmetric states, considered as a continuos sequence with the relative amount of magnetic support as control parameter, have in general no neighboring nonaxisymmetric equilibria. This result lends credence to a conjecture originally made by H. Grad and extends early results obtained by E. Parker to the case of self-gravitating magnetized bodies. The only allowed bifurcations of this sequence of axisymmetric equilibria are represented by distortions with dipole-like angular dependence (l=1) that can be continued into the nonlinear regime. These new configurations are either (i) azimuthally asymmetric (m=+-1) or (ii) azimuthally symmetric but without reflection symmetry with respect to the equatorial plane (m=0). To the extent that interstellar clouds can be represented as isolated magnetostatic equilibria, the results of this study suggest that the observed triaxial shapes of molecular cloud cores can be interpreted in terms of weakly damped Alfven oscillations about an equilibrium state.
description: 32 pages, 5 figures, MNRAS in press
Learning about knowledge: A complex network approach
Creators: name: Costa, Luciano da Fontoura
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This article describes an approach to modeling knowledge acquisition in terms of walks along complex networks. Each subset of knowledge is represented as a node, and relations between such knowledge are expressed as edges. Two types of edges are considered, corresponding to free and conditional transitions. The latter case implies that a node can only be reached after visiting previously a set of nodes (the required conditions). The process of knowledge acquisition can then be simulated by considering the number of nodes visited as a single agent moves along the network, starting from its lowest layer. It is shown that hierarchical networks, i.e. networks composed of successive interconnected layers, arise naturally as a consequence of compositions of the prerequisite relationships between the nodes. In order to avoid deadlocks, i.e. unreachable nodes, the subnetwork in each layer is assumed to be a connected component. Several configurations of such hierarchical knowledge networks are simulated and the performance of the moving agent quantified in terms of the percentage of visited nodes after each movement. The Barabási-Albert and random models are considered for the layer and interconnecting subnetworks. Although all subnetworks in each realization have the same number of nodes, several interconnectivities, defined by the average node degree of the interconnection networks, have been considered. Two visiting strategies are investigated: random choice among the existing edges and preferential choice to so far untracked edges. A series of interesting results are obtained, including the identification of a series of plateaux of knowledge stagnation in the case of the preferential movements strategy in presence of conditional edges.
description: 18 pages, 19 figures
title: Rezension zu: Volk, Theresia (2019): Spielen, um zu gewinnen. Macht und Wirksamkeit in Organisationen.
title: Göttingen: Vandenhoeck & Ruprecht. 104 Seiten, 15,00 €
Creators: name: Winand, Martin
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: 150
subject: 650
subject: Volk, Theresia
subject: Beruf
subject: Macht
subject: Rezension

description: Gefördert im Rahmen des Projekts DEAL
Size and Growth of the Nutritionally Improved Foods Market
Creators: name: Frazão, Elizabeth
name: Allshouse, Jane E.
name: Frazão, Elizabeth
name: Allshouse, Jane E.
Publisher: name: Unknown
Year: 1996
Subjects: subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Research Methods/ Statistical Methods
subject: Food
subject: food costs
subject: food sales
subject: nutritionally improved foods

description: Sales of "nutritionally improved" food items grew at a faster pace than sales of "regular versions" in U.S. supermarkets between 1989 and 1993 even though nutritionally improved foods generally cost more. This study covered 37 food categories (such as cookies, hot dogs, and ice cream) and divided each category into two groups: "nutritionally improved versions" and "regular versions." The study used supermarket scanner data for the period. Volume share of nutritionally improved versions of the foods expanded from 36 percent in 1989 to 39 percent in 1993, and the dollar share of the nutritionally improved versions increased from 26 percent in 1989 to 30 percent in 1993. Volume sales for the 37 food categories increased a total of 10.9 billion units from 1989 to 1993, with nutritionally improved versions accounting for 78 percent of that increase. Dollar sales for the 37 food groups overall increased $11.3 billion in the same time period, with nutritionally improved versions accounting for 55 percent of that increase.
Electrical Detection of Spin Excitations
Creators: name: Salahuddin, Sayeef
name: Datta, Supriyo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The objective of this paper is to draw attention to a possible new approach for measuring the spin excitation spectrum of a spin array by placing it in intimate contact with the channel of a spin-valve device in an anti-parallel (AP) configuration. We show, using realistic device parameters, that the second derivative of the current $\partial^2I/\partial V^2$ should exhibit peaks whose location corresponds to the energy of excitation and whose height is its strength. The effect is maximum for ideal half metallic contacts in AP configuration but we show that even with contacts that are less than ideal, the spin signals can be extracted using a de-embedding scheme. Compared to existing techniques our proposal has three attractive features: (a) high sensitivity down to single spins, (b) high spatial resolution limited only by the wavefunctions of the individual spins and (c) a relatively common device structure to which a lot of current research is devoted
The Formation of Fossil Galaxy Groups in the hierarchical Universe
Creators: name: D'Onghia, E.
name: Sommer-Larsen, J.
name: Romeo, A. D.
name: Burkert, A.
name: Pedersen, K.
name: Portinari, L.
name: Rasmussen, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use a set of twelve high-resolution N-body/hydrodynamical simulations in the $Λ$CDM cosmology to investigate the origin and formation rate of fossil groups (FGs), which are X-ray bright galaxy groups dominated by a large elliptical galaxy, with the second brightest galaxy being at least two magnitudes fainter. The simulations invoke star formation, chemical evolution with non-instantaneous recycling, metal dependent radiative cooling, strong star burst driven galactic super winds, effects of a meta-galactic UV field and full stellar population synthesis. We find an interesting correlation between the magnitude gap between the first and second brightest galaxy and the formation time of the group. It is found that FGs have assembled half of their final dark matter mass already at $z\ga1$, and subsequently typically grow by minor merging only, wheras non-FGs on average form later. The early assembly of FGs leaves sufficient time for galaxies of $L \sim L_*$ to merge into the central one by dynamical friction, resulting in the large magnitude gap at $z=0$. A fraction of 33$\pm$16% of the groups simulated are found to be fossil, whereas the observational estimate is $\sim$10-20%. The FGs are found to be X-ray over-luminous relative to non-FGs of the same optical luminosity, in qualitative agreement with observations. Finally, from a dynamical friction analysis is found that only because infall of $L \sim L_*$ galaxies happens along filaments with small impact parameters do FGs exist at all.
description: 4 pages, 3 figures, one figure removed. Accepted for publication in ApJ Letter
The bohmion method in nonadiabatic quantum hydrodynamics
Creators: name: Holm, Darryl D.
name: Rawlinson, Jonathan I.
name: Tronci, Cesare
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Starting with the exact factorization of the molecular wavefunction, this paper presents the results from the numerical implementation in nonadiabatic molecular dynamics of the recently proposed bohmion method. Within the context of quantum hydrodynamics, we introduce a regularized nuclear Bohm potential admitting solutions comprising a train of $δ$-functions which provide a finite-dimensional sampling of the hydrodynamic flow paths. The bohmion method inherits all the basic conservation laws from its underlying variational structure and captures electronic decoherence. After reviewing the general theory, the method is applied to the well-known Tully models, which are used here as benchmark problems. In the present case of study, we show that the new method accurately reproduces both electronic decoherence and nuclear population dynamics.
title: Journal of Educational Thought / Revue de la Pensée Educative, Vol. 53 No. 3 (2020): Journal of Educational Thought
title: Journal of Educational Thought
titleType: AlternativeTitle
Creators: name: Journal Of Educational Thought / Revue De La Pensée Educative
Publisher: name: Journal of Educational Thought / Revue de la Pensée Educative
Year: 2021

description: Philosophy in University Disciplines and Philosophy for Children...247-252 Empowering Migrant Women Through Poetry...253-256 The Path of Spirituality: Reflections from a Montessorian and a Physicist...257-268 Hiring Practices and its Connection to the Conceptualization of ‘a Good Teacher’ in Diverse Classrooms...269-290 Dear Claude: An Ongoing Duoethnography of Identity and Displacement...291-304 Experiencing Grace and Graceful Moments: In-Between Spaces in Teaching and Learning...305-323
Hoan Ngoc Activity in Streptozotocin- induced Diabetic Mice
Creators: name: Pawana Panomke
Publisher: name: Faculty of Pharmaceutical Sciences KKU MSU UBU
Year: 2011
Subjects: Hoan Ngoc, diabetic, hypoglycemic activity

description: Isan Journal ofPharmaceutical Sciences, 7, 2, 22-28
Sound modes broadening for Fibonacci one dimensional quasicrystals
Creators: name: Kats, E. I.
name: Muratov, A. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate vibrational excitation broadening in one dimensional Fibonacci model of quasicrystals (QCs). The chain is constructed from particles with two masses following the Fibonacci inflation rule. The eigenmode spectrum depends crucially on the mass ratio. We calculate the eigenstates and eigenfunctions. All calculations performed self-consistently within the regular expansion over the three wave coupling constant. The approach can be extended to three dimensional systems. We find that in the intermediate range of mode coupling constants, three-wave broadening for the both types of systems (1D Fibonacci and 3D QCs) depends universally on frequency. Our general qualitative conclusion is that for a system with a non-simple elementary cell phonon spectrum broadening is always larger than for a system with a primitive cell (provided all other characteristics are the same).
description: 2o pages, 15 figures
EXPIRING MINNESOTA CRP CONTRACTS: 1996-98; STATE AND COUNTY SUMMARIES
Creators: name: Taff, Steven J.
name: Taff, Steven J.
Publisher: name: Unknown
Year: 1993
Subjects: Land Economics/Use

description: Nearly two million acres of Minnesota farmland have been idled under federal Conservation Reserve Program (CRP) contracts. Starting in 1996, these 27,000 contracts will begin to expire. The contracts summarized in this report, those which expire between 1996 and 1998, account for nearly four-fifths of the total state enrollment (Tables 1 and 2, Map 1). This report is largely descriptive: analysis and interpretation of the data presented here are pretty much left to the reader. The first portion of the report provides state-wide CRP summaries. The same information at the county level is presented in Tables 9-15.
Public realm planning and design : creating more livable communities
Creators: name: Gregory, Karen A.
Publisher: name: University of British Columbia
Year: 2009

description: The public realm is defined as space that is shared communally by the public. It is intimately linked to the ideas of universal access, the common ground, and shared amenities. Examples of public space include parks, plazas, pedestrian pathways, and streets. Traditionally the public realm has served a social function - acting as a medium of communication, tool for social awareness and learning, etc. However, it is acknowledged that these social functions are idealistic, and not necessarily reflective of the current norm. The actual and virtual decentralization of place has negatively impacted how the public realm posits itself in terms of its function, and the value that is attributed to it. This has been further compounded by transitions in the public realm, and rapid urban growth and change. The thesis seeks to address this problem by exploring public realm planning and design to provide a comprehensive understanding of public spaces and their role in contributing to more livable communities. The primary research objective of the thesis is to determine how social design approaches to public realm planning and design can maintain the value of place amidst growth and change in the contemporary city. In support of this objective, the research also seeks to determine the role of the public realm in urban North America, and how social design and place-based planning and design approaches contribute to the public realm. Four primary research methodologies were used to provide information in support of the aforementioned purpose and objective: literature review, informal interviews, survey work, and participant observation. To provide contextual meaning and further insight, the latter two of these methods were applied during case study research to determine how people living and working in Yaletown access, use, and perceive the public realm. Through the application of social design principles and approaches, the case study was successful in illustrating that user participation in public realm studies can be effective in gaining a better understanding of human-environment relationships. The research findings demonstrated patterns of behaviour and local perceptions in and of the Yaletown public realm which provided the basis for conclusions and recommendations about design elements (transportation, signage, vegetation, street furniture, weather protection, public art) and planning and design approaches (incremental and evaluative, interdisciplinary, inclusive and holistic). The thesis demonstrates that planning and design rooted in the ideology of social design - placemaking with people - provides the means to meet the individual and collective needs, values, and expectations of local users, while further perpetuating the value of place in the public realm. In essence, this provides framework for "creating more livable communities".
Gastrointestinal stromal tumors regulate macrophage M2 polarization through the MIF/CXCR4 axis to immune escape
Creators: name: 肖硕萌
Publisher: name: CNGB
Year: 2024
Subjects: Raw sequence reads
Synthetic
Medical

description: The infiltration of immune cells and their roles of the infiltrating-immune cells in gastrointestinal stromal tumor (GIST) is still unclear. We aimed to discover the infiltration cell types and the relationship between the infiltrating-immune cells and the progression of GIST.
Experiencing Grace and Graceful Moments: In-Between Spaces in Teaching and Learning
Creators: name: Chadwick, Sheelagh
name: Skuce, Tim
Publisher: name: Journal of Educational Thought / Revue de la Pensée Educative
Year: 2021

description: Abstract: Teacher education’s dominant narrative is often one that accentuates sure-fire methods in the attainment of curriculum goals and objectives. We offer grace as an orientation that could serve to accentuate the profoundly relational generative space of teaching and learning, and to afford opportunities for taking time and making space in the classroom for inquiry into the living disciplines as a means to further understandings of self, other and curriculum matter. In this paper we explore and interpret Richard Wagamese’s essay “On the wings of eagles” as a portrayal of moments of grace and put it into conversation with our own experiences in teacher education and curriculum theory. Although it is not in the nature of this project to conclude or profess definitive results or methods, our aim is to keep open questions of what it means to be graceful, and to act gracefully in relation to our students and to subject matters. We believe that grace is a way to be in the world that could be transformational for current pedagogical practices.
description: Journal of Educational Thought / Revue de la Pensée Educative, Vol. 53 No. 3 (2020): Journal of Educational Thought