cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Three-dimensional heat and mass transfer during oriented strandboard hot-pressing
Creators: name: García, Pablo José
Publisher: name: University of British Columbia
Year: 2009

description: This thesis constitutes an empirical and theoretical study of the effects of mat structure on three-dimensional heat and mass transfer during oriented strandboard hot-pressing. The empirical experimentation programme examined the effects of different flake-alignments on lateral and transverse heat and gas flow through the mat. It involved measuring internal mat temperatures and gas pressures in robot formed, single layer, flake mats with varying degrees of flake-alignment. Flake-alignment was seen to impede heat transfer to the core, and to improve lateral gas flow and escape. Increasing the mat density reduced the flake-alignment effects, as did increasing the mat size. Theoretical heat and mass transfer modelling reinforced these experimental conclusions. Modelling observations indicated that the effects on heat and mass transfer of flake-alignment and lateral permeability are analogous, as are the relative effects of increased mat size versus decreased lateral permeability. Based on mass and energy conservation equations, the modelling involved numerically solving a coupled system of partial differential equations for the rates of change of temperature, gas pressure and moisture content. This yielded dynamic predictions of three-dimensional temperature, gas pressure and moisture content distributions. The resulting predictions followed trends and behaviours consistent with hot-pressing heat and mass transfer theory, and the temperatures closely matched the experimental measurements. In this regard, the model could therefore be of significance in preliminary qualitative comparisons and investigations of other flake-mat structures and pressing conditions. In addition, this thesis also includes the formulation of a high-temperature moisture sorption isotherm equation, and the formulation of a regression equation for horizontal temperature and gas pressure distributions. These equations were developed for analysing experimental data and modelling heat and mass transfer. On their own, the two equations constitute significant contributions to hot-pressing research. The sorption isotherm equation could also be of significance to high-temperature drying and other high-temperature wood applications.
Quantization of formal classical dynamical r-matrices: the reductive case
Creators: name: Calaque, Damien
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: In this paper we prove the existence of a formal dynamical twist quantization for any triangular and non-modified formal classical dynamical $r$-matrix in the reductive case. The dynamical twist is constructed as the image of the dynamical $r$-matrix by a $L_\infty$-quasi-isomorphism. This quasi-isomorphism also allows us to classify formal dynamical twist quantizations up to gauge equivalence.
description: 13 pages, 1 section added (classification of dynamical twists), LaTeX, final version, to appear in Adv. Math
Nikephoros Phokas: "Der bleiche Tod der Sarazenen" ...
Creators: name: Engberding, Hieronymus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 46 (1962): Oriens christianus, Band 46
ESTIMATING CORN YIELD RESPONSE MODELS TO PREDICT IMPACTS OF CLIMATE CHANGE
Creators: name: Dixon, Bruce L.
name: Hollinger, Steven E.
name: Garcia, Philip
name: Tirupattur, Viswanath
name: Dixon, Bruce L.
name: Hollinger, Steven E.
name: Garcia, Philip
name: Tirupattur, Viswanath
Publisher: name: Unknown
Year: 1994
Subjects: Crop Production/Industries

description: Projections of the impacts of climate change on agriculture require flexible and accurate yield response models. Typically, estimated yield response models have used fixed calendar intervals to measure weather variables and omitted observations on solar radiation, an essential determinant of crop yield. A corn yield response model for Illinois crop reporting districts is estimated using field data. Weather variables are time to crop growth stages to allow use of the model if climate change shifts dates of the crop growing season. Solar radiation is included. Results show this model is superior to conventionally specified models in explaining yield variation in Illinois corn.
Electron Transport Through the Two-Dimensional Atomic Lattice
Creators: name: Kwapinski, T.
name: Korczak, Z.
name: Jalochowski, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electrical conductivity changes of the Si(111)-(6x6)Au surface at early stage of Pb deposition was studied experimentally and theoretically as a function of coverage. Pb deposition onto a Si(111)-(6x6)Au surface induce strong change of the conductance even at a low coverage ($<1$ monolayer). The experimental results are analyzed using the theoretical model of two dimensional (2D) square atomic lattice.
description: 8 pages, 4 figures
THE USE OF MEAN-VARIANCE FOR COMMODITY FUTURES AND OPTIONS HEDGING DECISIONS
Creators: name: Garcia, Philip
name: Adam, Brian D.
name: Hauser, Robert J.
name: Garcia, Philip
name: Adam, Brian D.
name: Hauser, Robert J.
Publisher: name: Unknown
Year: 1994
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This study provides additional evidence of the usefulness of mean-variance procedures in the presence of options which can truncate and skew the returns distribution. Using a simulation analysis, price hedging decisions are examined for hog producers when options are available. Mean-variance results are contrasted with optimal decisions based on negative exponential and Cox-Rubinstein utility functions over 56 ending price scenarios and two levels of risk aversion. The findings from our simulation, which considers discrete contracts, basis risk, lognormality in prices, transactions costs, and alternative utility specifications, affirm the usefulness of mean-variance framework.
Additional file 1 of Re-testing reported significant SNPs related to suicide in a historical high -risk isolated population from north east India
Creators: name: Gaurav Gupta
name: Deval, Ravi
name: Anshuman Mishra
name: Shashank Upadhyay
name: Piyoosh Kumar Singh
name: V. R. Rao
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Primer sequences used for genotyping along with melting temperature and amplicon base pairs. Table S2. List of suggestive significant SNPs chosen from a review of 10 year study for re-testing in the present study. Table S3. Distribution of genotypes, allele frequencies and HW test of significance among cases and controls of the 16 selected SNPs in the present study. Table S4. Network pathway percentage contribution of different default parameters of the figure S1. Figure S1. Pathway network analysis of 6 significant genes of the present study along with candidate genes of different known pathways of suicide behaviour. Default settings used for creation of network are as described in Table S4.
CONDITIONAL DEMAND AND ENDOGENEITY? A CASE STUDY OF DEMAND FOR JUICE PRODUCTS
Creators: name: Brown, Mark G.
name: Behr, Robert M.
name: Lee, Jonq-Ying
name: Brown, Mark G.
name: Behr, Robert M.
name: Lee, Jonq-Ying
Publisher: name: Unknown
Year: 1994
Subjects: Demand and Price Analysis

description: The question of endogeneity of conditional expenditures, as well as prices, in conditional demand equations for justices is examined. Both conditional expenditures and prices were found to be uncorrelated with the conditional demand errors, based on Wu-Hausman tests. Conditional demand error variance/covariance estimates and corresponding Slutsky coefficient estimates were approximately proportional, as predicted by the theory of rational random behavior, further supporting independence of conditional expenditures and conditional errors for juice demands.
Estimating Multiple Precision Matrices With Cluster Fusion Regularization
Creators: name: Price, Bradley S.
name: Molstad, Aaron J.
name: Sherwood, Ben
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: We propose a penalized likelihood framework for estimating multiple precision matrices from different classes. Most existing methods either incorporate no information on relationships between the precision matrices or require this information be known a priori. The framework proposed in this article allows for simultaneous estimation of the precision matrices and relationships between the precision matrices. Sparse and nonsparse estimators are proposed, both of which require solving a nonconvex optimization problem. To compute our proposed estimators, we use an iterative algorithm which alternates between a convex optimization problem solved by blockwise coordinate descent and a k-means clustering problem. Blockwise updates for the sparse estimator require computing an elastic net penalized precision matrix estimation problem, which we solve using a proximal gradient descent algorithm. We prove that this subalgorithm has a linear rate of convergence. In simulation studies and two real data applications, we show that our method can outperform competitors that ignore relevant relationships between precision matrices and performs similarly to methods which use prior information often unknown in practice. Supplementary materials for this article are available online.
Additional file 1 of The quality of drinking and domestic water from the surface water sources (lakes, rivers, irrigation canals and ponds) and springs in cholera prone communities of Uganda: an analysis of vital physicochemical parameters
Creators: name: Bwire, Godfrey
name: Sack, David A.
name: Atek Kagirita
name: Obala, Tonny
name: Debes, Amanda K.
name: Ram, Malathi
name: Komakech, Henry
name: George, Christine Marie
name: Orach, Christopher Garimoi
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Additional file 1. The number and the type of water sources in each of the lake basins in cholera prone communities of Uganda that were enrolled in the study, February 2015 – January 2016.
$α$ Decay Half-life Estimation and Uncertainty Analysis
Creators: name: Cai, Boshuai
name: Chen, Guangshang
name: Xu, Jiongyu
name: Yuan, Cenxi
name: Qi, Chong
name: Yao, Yuan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The non-parametric bootstrap method is used to evaluate the uncertainties of two $α$ decay formulas, the universal decay law (UDL) and the new Geiger-Nuttall law (NGNL). Such a method can simultaneously obtain the uncertainty of each parameter, the correlation between each pair of parameters, and the total, statistical, and systematic uncertainties of each formula. Both even-even (ee) nuclei and odd-A (oA) nuclei are used in the analysis. The collected data are separated into three parts: ee nuclei, oA nuclei without spin or parity change (oA\_nc), and oA nuclei with spin and/or parity change (oA\_c). Based on the residues between observed data and corresponding calculations, the statistical and systematic uncertainties are decomposed from the total uncertainty, from which one can clarify the effects from the shell structure, pairing, and angular momentum change on describing $α$ decay half-life. If $N > 126$ and $N \leqslant 126$ nuclei are considered together, the systematic uncertainty of residues between observed and predicted half-lives are larger than if those groups are considered separately. Without shell correction term, a much larger systematic uncertainty is found if parameters obtained for $N \leqslant 126$ nuclei are used to describe the half-lives of $N > 126$ nuclei. A global hindrance on the $α$ decay process is found in oA\_nc (oA\_c) nuclei comparing with ee (oA\_nc) nuclei. If parameters obtained from ee (oA\_nc) nuclei are used, the half-lives of oA\_nc (oA\_c) nuclei are generally underestimated with large systematic uncertainties, which can be related to the contribution of pairing effect and angular momentum. The recently observed superallowed decay from $^{104}$Te to $^{100}$Sn is also discussed based on uncertainty analysis. (Abstract is not fully presented because of length limitation)
description: To be published in Physical Review C
SIMULTANEITY OF TECHNOLOGY ADOPTION AND PRODUCTIVITY
Creators: name: Zepeda, Lydia
name: Zepeda, Lydia
Publisher: name: Unknown
Year: 1994
Subjects: Productivity Analysis

description: A simultaneous equation generalized probit model is estimated to determine factors affecting technology adoption by California dairy farmers. Since productivity and technology choice are jointly determined, a single-equation approach to determine whether productivity affects technology adoption is subject to simultaneity bias. Since the system of equations contains both continuous and discrete endogenous variables, generalized probit is used. The findings indicate that the biased single-equation estimates tend to exaggerate relationships with explanatory variables, and in some cases, lead to different implications. This emphasizes the need to use the consistent and asymptotically more efficient generalized probit results to account for simultaneity.
Collision statistics in a dilute granular gas fluidized by vibrations in low gravity
Creators: name: Falcon, Eric
name: Aumaître, S.
name: Evesque, P.
name: Palencia, F.
name: Lecoutre-Chabot, C.
name: Fauve, S.
name: Beysens, D.
name: Garrabos, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report an experimental study of a dilute "gas" of inelastically colliding particles excited by vibrations in low gravity. We show that recording the collision frequency together with the impulses on a wall of the container gives access to several quantities of interest. We observe that the mean collision frequency does not scale linearly with the number N of particles in the container. This is due to the dissipative nature of the collisions and is also directly related to the non extensive behaviour of the kinetic energy (the granular temperature is not intensive).
description: to be pubished in Europhysics Letters (May/June 2006)
Additional file 2 of The quality of drinking and domestic water from the surface water sources (lakes, rivers, irrigation canals and ponds) and springs in cholera prone communities of Uganda: an analysis of vital physicochemical parameters
Creators: name: Bwire, Godfrey
name: Sack, David A.
name: Atek Kagirita
name: Obala, Tonny
name: Debes, Amanda K.
name: Ram, Malathi
name: Komakech, Henry
name: George, Christine Marie
name: Orach, Christopher Garimoi
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Additional file 2. One Way ANOVA test results for the differences within the study sites overtime (February 2015 – January 2016) and between sites.
INTERREGIONAL EFFECTS OF REDUCED TIMBER HARVESTS: THE IMPACT OF THE NORTHERN SPOTTED OWL LISTING IN RURAL AND URBAN OREGON
Creators: name: Waters, Edward C.
name: Holland, David W.
name: Weber, Bruce A.
name: Waters, Edward C.
name: Holland, David W.
name: Weber, Bruce A.
Publisher: name: Unknown
Year: 1994
Subjects: Resource /Energy Economics and Policy

description: A core-periphery, multiregional, input-output model of western Oregon is used to estimate impacts of periphery timber harvest reductions resulting from listing of an endangered species. Under the most probable scenario, 31,620 total jobs would be lost in the two regions. Fourteen percent of this impact is absorbed in the core (Metro) region. Forty percent of periphery and 80% of Metro jobs lost are from service sectors, a result of important core-periphery trade in central place services. Explicit inclusion of unemployment benefits for displaced workers reduces employment loss estimates by 12% to 14%.
Estimating Multiple Precision Matrices with Cluster Fusion Regularization
Creators: name: Price, Bradley S.
name: Molstad, Aaron J.
name: Sherwood, Ben
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: We propose a penalized likelihood framework for estimating multiple precision matrices from different classes. Most existing methods either incorporate no information on relationships between the precision matrices, or require this information be known a priori. The framework proposed in this article allows for simultaneous estimation of the precision matrices and relationships between the precision matrices. Sparse and non-sparse estimators are proposed, both of which require solving a non-convex optimization problem. To compute our proposed estimators, we use an iterative algorithm which alternates between a convex optimization problem solved by blockwise coordinate descent and a k-means clustering problem. Blockwise updates for the sparse estimator require computing an elastic net penalized precision matrix estimation problem, which we solve using a proximal gradient descent algorithm. We prove that this subalgorithm has a linear rate of convergence. In simulation studies and two real data applications, we show that our method can outperform competitors that ignore relevant relationships between precision matrices and performs similarly to methods which use prior information often unknown in practice.
Exact results for $Z_m^{\rm OS}$ and $Z_2^{\rm OS}$ with two mass scales and up to three loops
Creators: name: Fael, Matteo
name: Schönwald, Kay
name: Steinhauser, Matthias
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the on-shell mass and wave function renormalization constants $Z_m^{\rm OS}$ and $Z_2^{\rm OS}$ up to three-loop order allowing for a second non-zero quark mass. We obtain analytic results in terms of harmonic polylogarithms and iterated integrals with the additional letters $\sqrt{1-τ^2}$ and $\sqrt{1-τ^2}/τ$ which extends the findings from Ref. [1] where only numerical expressions are presented. Furthermore, we provide terms of order ${\cal O}(ε^2)$ and ${\cal O}(ε)$ at two- and three-loop order which are crucial ingrediants for a future four-loop calculation. Compact results for the expansions around the zero-mass, equal-mass and large-mass cases allow for a fast high-precision numerical evaluation.
description: 14 pages, 3 figures
DEMAND FOR WHEAT CLASSES BY PACIFIC RIM COUNTRIES
Creators: name: Wilson, William W.
name: Wilson, William W.
Publisher: name: Unknown
Year: 1994
Subjects: Demand and Price Analysis

description: The transcendental logarithmic function is used to derive demand functions which are estimated for wheat classes imported by Pacific Rim countries. Results indicate substantial differences exist in underlying demand parameters for wheat of different classes as well as across countries. In addition, the expenditure level has important impacts on the distribution of imported wheat classes, and preferences have shifted significantly through time, generally toward higher protein wheats.
Anisotropic interactions of a single spin and dark-spin spectroscopy in diamond
Creators: name: Epstein, R. J.
name: Mendoza, F. M.
name: Kato, Y. K.
name: Awschalom, D. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The nitrogen-vacancy (N-V) center in diamond is a promising atomic-scale system for solid-state quantum information processing. Its spin-dependent photoluminescence has enabled sensitive measurements on single N-V centers, such as: electron spin resonance, Rabi oscillations, single-shot spin readout and two-qubit operations with a nearby 13C nuclear spin. Furthermore, room temperature spin coherence times as long as 58 microseconds have been reported for N-V center ensembles. Here, we have developed an angle-resolved magneto-photoluminescence microscopy apparatus to investigate the anisotropic electron spin interactions of single N-V centers at room temperature. We observe negative peaks in the photoluminescence as a function of both magnetic field magnitude and angle that are explained by coherent spin precession and anisotropic relaxation at spin level anti-crossings. In addition, precise field alignment unmasks the resonant coupling to neighboring dark nitrogen spins that are not otherwise detected by photoluminescence. The latter results demonstrate a means of investigating small numbers of dark spins via a single bright spin under ambient conditions.
description: 13 pages, 4 figures
Grabler, Franz: Die Krone der Komnenen
Creators: name: Engberding, Hieronymus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 46 (1962): Oriens christianus, Band 46
BMX Interferometer: Calibration Studies for a 21cm Intensity Mapping Experiment
Creators: name: O'Connor, Paul
Publisher: name: Zenodo
Year: 2021
Subjects: 21cm intensity mapping
interferometry

description: The Baryon Mapping Experiment (BMX) at Brookhaven Laboratory is a 4-dish radio interferometer operating in the frequency band from 1100 to 1650MHz. It is designed as a technical pathfinder for a future cosmic survey using the intensity mapping technique to measure large-scale 3D cosmic structure traced by the redshifted emission of neutral hydrogen (rest frame wavelength 21cm). The array consists of four, 4-m diameter off-axis parabolic dishes and low-noise dual-polarization receivers. The digital back-end electronics includes digitization and real-time frequency channelization and correlation using fast GPU processors. In continuous operation, the telescope generates 28GB/day of time-ordered visibility data, resulting in a ~10TB dataset over ~380 days of observation.
 A major objective of BMX is to investigate calibration techniques, which will be critical for a large future program. To date, we have used observations of astrophysical (Cyg A active galaxy) and artificial (UAV and GNSS satellite) sources as calibrators and have preliminary results for beam parameters as functions of frequency and polarization. We have also mapped the spatial and fine-scale frequency structure of the region of the Milky Way galaxy within the BMX footprint and found good agreement with the all-sky survey made with the Effelsberg 100m radio telescope (HI4PI collaboration, arXiv:1610.06175).
 An upgrade of the digital back end electronics is underway which will replace the PCI digitizer cards and portions of the correlator F- and X-engines with recently-introduced RF System-on-Chip (RFSoC) hardware, capable of digitizing all 8 channels at 4-6 Gsamples/sec and streaming data out at 50GB/s.
Quantum information processing in diamond
Creators: name: Jelezko, F.
name: Wrachtrup, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computing is an attractive and multidisciplinary field, which became a focus for experimental and theoretical research during last decade. Among other systems, like ions in traps or superconducting circuits, solid-states based qubits are considered to be promising candidates for first experimental tests of quantum hardware. Here we report recent progress in quantum information processing with point defect in diamond. Qubits are defined as single spin states (electron or nuclear). This allows exploring long coherence time (up to seconds for nuclear spins at cryogenic temperatures). In addition, the optical transition between ground and excited electronic states allows coupling of spin degrees of freedom to the state of the electromagnetic field. Such coupling gives access to the spin state readout via spin-selective scattering of photon. This also allows using of spin state as robust memory for flying qubits (photons).
description: 38 pages, 14 figures
Re-examining rates of lithium-ion battery technology improvement and cost decline
Creators: name: Ziegler, Micah S.
name: Trancik, Jessika E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Lithium-ion technologies are increasingly employed to electrify transportation and provide stationary energy storage for electrical grids, and as such their development has garnered much attention. However, their deployment is still relatively limited, and their broader adoption will depend on their potential for cost reduction and performance improvement. Understanding this potential can inform critical climate change mitigation strategies, including public policies and technology development efforts. However, many existing models of past cost decline, which often serve as starting points for forecasting models, rely on limited data series and measures of technological progress. Here we systematically collect, harmonize, and combine various data series of price, market size, research and development, and performance of lithium-ion technologies. We then develop representative series for these measures and employ performance curve models to estimate improvement rates. We also develop a method to incorporate additional performance characteristics into these models, including energy density and specific energy performance metrics. When energy density is incorporated into the definition of service provided by a lithium-ion cell, estimated technological improvement rates increase considerably, suggesting that previously reported improvement rates might underestimate the rate of lithium-ion technologies' change. Moreover, our estimates suggest the degree to which lithium-ion technologies' price decline might have been limited by performance requirements other than cost per energy capacity. These rates also suggest that battery technologies developed for stationary applications, where restrictions on volume and mass are relaxed, might achieve faster cost declines, though engineering-based mechanistic cost modeling is required to further characterize this potential.
description: 37 pages, 11 figures
Comparison of discharge lamp and laser pumped cesium magnetometers
Creators: name: Groeger, S.
name: Pazgalev, A. S.
name: Weis, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have performed a comparison of laser (LsOPM) and lamp (LpOPM) pumped cesium vapor magnetometers. Although the LsOPM operated 50% above its shot-noise limit we found an intrinsic sensitivity of 15 fT/\sqrt{Hz} and 25 fT/\sqrt{Hz} for the LsOPM and LpOPM respectively. Two modes of operation, viz.,the phase-stabilized and the self-oscillating mode were investigated and found to yield a similar performance. We have compared the performance of the LsOPM and the LpOPM directly by simultaneous measurements of field fluctuations of a 2 microtesla magnetic field inside a multilayer magnetic shield and have used one of the magnetometers for an active field stabilization. In the stabilized mode we found a gradient instability of 25 fT within an integration time of 100 s, which represents an upper limit of the long-term stability of the magnetometers.
description: 11 pages, 13 figures, 1 table
EXOGENIZING AGRICULTURE IN AN INPUT-OUTPUT MODEL TO ESTIMATE RELATIVE IMPACTS OF DIFFERENT FARM TYPES
Creators: name: Johnson, Thomas G.
name: Kulshreshtha, Surendra N.
name: Johnson, Thomas G.
name: Kulshreshtha, Surendra N.
Publisher: name: Unknown
Year: 1982
Subjects: Community/Rural/Urban Development

description: In this study, aggregate, provincial level impact for various farm types are estimated for Saskatchewan based on an input-output table constructed for the province. The input-output table is rectangular with the agriculture sector including 12 farm subsectors, treated exogenously. Results indicate that in 1978 agriculture contributed 13.8 percent of the provincial gross domestic product directly, and another 18.2 percent indirectly. Among the farm types, the grain farms generated the highest output multipliers while cow-calf, dairy and irrigation generated the lowest. The income and value added pseudo-multipliers were almost a complete reversal of the output multipliers. Although irrigation generated low pseudo-multipliers, the dairy and cow calf sectors generated higher pseudo-multipliers.
Effects of density-dependent scenarios of in-medium nucleon-nucleon interactions in heavy-ion collisions
Creators: name: Wei, Gao-Feng
name: Xu, Chang
name: Xie, Wei
name: Zhi, Qi-Jun
name: Chen, Shi-Guo
name: Long, Zheng-Wen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using a more reasonable separate density-dependent scenario instead of the total density-dependent scenario for in-medium $nn$, $pp$ and $np$ interactions, we examine effects of differences of in-medium nucleon-nucleon interactions in two density-dependent scenarios on isospin-sensitive observables in central $^{197}$Au+$^{197}$Au collisions at 400 MeV/nucleon. Moreover, to more physically detect the differences between the nucleon-nucleon interactions in two density-dependent scenarios, we also map the nucleon-nucleon interaction in the separate density-dependent scenario into that in the total density-dependent scenario through fitting the identical constraints for symmetric nuclear matter as well as the identical slope parameter of nuclear symmetry energy at the saturation density. It is shown that two density-dependent scenarios also lead to essentially different symmetry potentials especially at high densities although they can lead to the identical equation of state for the symmetry nuclear matter as well as the identical symmetry energy for the isospin asymmetric nuclear matter. Consequently, these isospin-sensitive observables are also appreciably affected by the different density-dependent scenarios of in-medium nucleon-nucleon interactions. Therefore, according to these findings, it is suggested that effects of the separate density-dependent scenario of in-medium nucleon-nucleon interactions should be taken into account when probing the high-density symmetry energy using these isospin-sensitive observables in heavy-ion collisions.
description: 8 pages, 6 figures. Abbreviated abstract to meet the criterion of arXiv platform. Accepted for publication in Physical Review C
Gap detection thresholds in old and young adults for speech and nonspeech stimuli differing in spectral properties
Creators: name: Storzer, Edward
Publisher: name: University of British Columbia
Year: 2009

description: Older adults have more difficulty than younger adults understanding spoken language, especially in the presence of background noise and when the speech signal is degraded (e.g., CHABA, 1988). Such deficits exist even for older adults with audiometric hearing thresholds in the normal range (e.g., Pichora-Fuller, 1997). Temporal processing has been implicated as an important aspect of speech processing that is susceptible to age-related changes. Gap detection tasks measure one aspect of temporal processing by determining the smallest gap between two stimulus markers that can be detected by a listener. Characteristics of gap detection stimuli, including marker duration and spectral symmetry of markers, influence the degree to which a gap detection task approximates processing of phonetically important temporal speech cues. Manipulation of these features has been shown to affect listener performance (e.g., Phillips, Taylor, Hall, Carr, & Mosop, 1997). This thesis examines the influence of such stimulus characteristics on age-related effects in gap detection performance, and considers the implications of such interactions. Gap detection thresholds were measured for eight younger and eight older normal-hearing adult listeners. The stimuli were varied across three dimensions, which included (1) speech versus non-speech, (2) long duration markers versus short duration markers, and (3) symmetrical versus asymmetrical markers. Gap detection performance was measured for each participant in eight stimulus conditions, which included all possible combinations of the three varied stimulus characteristics. Results replicated past findings which indicate poorer gap detection performance in older adults compared to younger adults, independent of audiometric hearing loss (e.g., Schneider, Pichora-Fuller, Kowalchuk, & Lamb, 1994; Snell, 1997). This age difference was shown to be significantly greater when markers were asymmetrical, which is consistent with the view that older adults have particular difficulty in processing temporal cues which closely approximate those found in consonant-vowel combinations in real speech. In asymmetrical conditions, participants of all ages were shown to perform better in speech conditions, indicating the presence of processing cues intrinsic to real speech signals that are independent of the temporal and spectral characteristics matched between the speech and non-speech stimuli used in this study.
Levi umbilical surfaces in complex space
Creators: name: Monti, R.
name: Morbidelli, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32V40

description: We define a complex connection on a real hypersurface of $\C^{n+1}$ which is naturally inherited from the ambient space. Using a system of Codazzi-type equations, we classify connected real hypersurfaces in $\C^{n+1}$, $n\ge 2$, which are Levi umbilical and have non zero constant Levi curvature. It turns out that such surfaces are contained either in a sphere or in the boundary of a complex tube domain with spherical section.
description: 18 pages
Mass Gaps and Braneworlds -- In Memory of Peter Freund
Creators: name: Stelle, K. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Remembering the foundational contributions of Peter Freund to supergravity, and especially to the problems of dimensional compactification, reduction is considered with a non-compact space transverse to the lower dimensional theory. The known problem of a continuum of Kaluza-Klein states is avoided here by the occurrence of a mass gap between a single normalizable zero-eigenvalue transverse wavefunction and the edge of the transverse state continuum. This style of reduction does not yield a formally consistent truncation to the lower dimensional theory, so developing the lower-dimensional effective theory requires integrating out the Kaluza-Klein states lying above the mass gap.
description: 23 pages, latex; submitted to the Peter Freund Memorial Volume to be published in J. Phys. A: Math. Theor
Generalizing the generalized Chaplygin gas
Creators: name: Sen, A. A.
name: Scherrer, Robert J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The generalized Chaplygin gas is characterized by the equation of state p = - A/rho^alpha, with alpha > -1 and w > -1. We generalize this model to allow for the cases where alpha < -1 or w < -1. This generalization leads to three new versions of the generalized Chaplygin gas: an early phantom model in which w << -1 at early times and asymptotically approaches w = -1 at late times, a late phantom model with w \approx -1 at early times and w -> - \infty at late times, and a transient model with w \approx -1 at early times and w -> 0 at late times. We consider these three cases as models for dark energy alone and examine constraints from type Ia supernovae and from the subhorizon growth of density perturbations. The transient Chaplygin gas model provides a possible mechanism to allow for a currently accelerating universe without a future horizon, while some of the early phantom models produce w < -1 without either past or future singularities.
description: 8 pages, 9 figures, references added, to appear in Phys. Rev. D
Additional file 1 of Measuring the resilience of health systems in low- and middle-income countries: a focus on community resilience
Creators: name: Sudip Bhandari
name: Alonge, Olakunle
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy

description: Additional file 1: Supplementary Table 1. List of articles retained for abstraction against the selection criteria. Supplementary table to support the conclusions of this article.
Fusion of visible and infrared images via complex function
Creators: name: Khaustov, Ya. Ye.
name: Ye, D.
name: Ryzhov, Ye.
name: Lychkovskyy, E.
name: Nastishin, Yu. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: I.4.5; I.4.8; C.7; J.7

description: We propose an algorithm for the fusion of partial images collected from the visual and infrared cameras such that the visual and infrared images are the real and imaginary parts of a complex function. The proposed image fusion algorithm of the complex function is a generalization for the algorithm of conventional image addition in the same way as the addition of complex numbers is the generalization for the addition of real numbers. The proposed algorithm of the complex function is simple in use and non-demanding in computer power. The complex form of the fused image opens a possibility to form the fused image either as the amplitude image or as a phase image, which in turn can be in several forms. We show theoretically that the local contrast of the fused phase images is higher than those of the partial images as well as in comparison with the images obtained by the algorithm of the simple or weighted addition. Experimental image quality assessment of the fused phase images performed using the histograms, entropy shows the higher quality of the phase images in comparison with those of the input partial images as well as those obtained with different fusion methods reported in the literature. Keywords: digital image processing, image fusion, infrared imaging, image quality assessment
description: 12 pages with 7 figures, submitted to Military Technical Collection 22 (2020) see http://vtz.asv.gov.ua
FEDERAL CROP INSURANCE VS. ASCS DISASTER ASSISTANCE FOR TEXAS HIGH PLAINS COTTON PRODUCERS: AN APPLICATION OF WHOLE-FARM SIMULATION
Creators: name: Lemieux, Catharine M.
name: Richardson, James W.
name: Nixon, Clair J.
name: Lemieux, Catharine M.
name: Richardson, James W.
name: Nixon, Clair J.
Publisher: name: Unknown
Year: 1982
Subjects: Crop Production/Industries
Risk and Uncertainty

description: A typical Texas High Plains cotton farm was simulated over a 10-year planning horizon using the FLIPSIM IV model to compare the effects of (a) participation in the Federal Crop Insurance (FCI) program, (b) participation in the ASCS low yield disaster program with either high or low target prices, or (c) nonparticipation. It was found that the highest level of crop insurance provided similar benefits as the disaster program.
On the transformation of torques between the laboratory and center of mass reference frames
Creators: name: Diaz, Rodolfo A.
name: Herrera, William J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics Education (physics.ed-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: It is commonly stated in Newtonian Mechanics that the torque with respect to the laboratory frame is equal to the torque with respect to the center of mass frame plus a (R X F) factor, with "R" being the position of the center of mass and "F" denoting the total external force. Although this assertion is true, there is a subtlety in the demonstration that is overlooked in the textbooks. In addition, it is necessary to clarify that if the reference frame attached to the center of mass rotates with respect to certain inertial frame, the assertion is not true any more.
description: 5 pages, 3 figures, LaTeX2e. A discussion about rotating reference frames added. Examples and new figures included. Version to appear in Revista Mexicana de Fisica
Additional file 1 of A continuous-time state-space model for rapid quality control of argos locations from animal-borne tags
Creators: name: Jonsen, Ian D.
name: Patterson, Toby A.
name: Costa, Daniel P.
name: Doherty, Philip D.
name: Godley, Brendan J.
name: W. James Grecian
name: Guinet, Christophe
name: Hoenner, Xavier
name: Kienle, Sarah S.
name: Robinson, Patrick W.
name: Votier, Stephen C.
name: Whiting, Scott
name: Witt, Matthew J.
name: Hindell, Mark A.
name: Harcourt, Robert G.
name: McMahon, Clive R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Neuroscience
subject: Ecology
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1 Supplementary figures.
Spin-wave dispersion in orbitally ordered La(0.5)Sr(1.5)MnO(4)
Creators: name: Senff, D.
name: Krueger, F.
name: Scheidl, S.
name: Benomar, M.
name: Sidis, Y.
name: Demmel, F.
name: Braden, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnon dispersion in the charge, orbital and spin ordered phase in La(0.5)Sr(1.5)MnO(4) has been studied by means of inelastic neutron scattering. We find an excellent agreement with a magnetic interaction model basing on the CE-type superstructure. The magnetic excitations are dominated by ferromagnetic exchange parameters revealing a nearly-one dimensional character at high energies. The nearest neighbor ferromagnetic interaction in La(0.5)Sr(1.5)MnO(4) is significantly larger than the one in the metallic ferromagnetically ordered manganites. The large ferromagnetic interaction in the charge/orbital ordered phase appears to be essential for the capability of manganites to switch between metallic and insulating phases.
description: 4 pages, 3 figures
Generalized Cauchy identities, trees and multidimensional Brownian motions. Part I: bijective proof of generalized Cauchy identities
Creators: name: Sniady, Piotr
Publisher: name: arXiv
Year: 2004
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J65; 05A19

description: In this series of articles we study connections between combinatorics of multidimensional generalizations of Cauchy identity and continuous objects such as multidimensional Brownian motions and Brownian bridges. In Part I of the series we present a bijective proof of multidimensional generalizations of the Cauchy identity. Our bijection uses oriented planar trees equipped with some linear orders.
description: Version 2: numerous misprints were corrected. Version 3: bijections described in an algorithmic way
A 40 W, 780 nm laser system with compensated dual beam splitters for atom interferometry
Creators: name: Kim, Minjeong
name: Notermans, Remy
name: Overstreet, Chris
name: Curti, Joseph
name: Asenbaum, Peter
name: Kasevich, Mark A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a narrow-linewidth 780 nm laser system with up to 40 W power and a frequency modulation bandwidth of 230 MHz. Efficient overlap on nonlinear optical elements combines two pairs of phase-locked frequency components into a single beam. Serrodyne modulation with a high-quality sawtooth waveform is used to perform frequency shifts with > 96.5 % efficiency over tens of MHz. This system enables next-generation atom interferometry by delivering simultaneous, Stark-shift-compensated dual beam splitters while minimizing spontaneous emission.
description: 4 pages, 3 figures
IMPACT OF FEDERAL ACREAGE LIMITATION POLICY ON WESTERN IRRIGATED AGRICULTURE
Creators: name: Moore, Charles V.
name: Moore, Charles V.
Publisher: name: Unknown
Year: 1982
Subjects: Land Economics/Use

description: Long-Run Average Cost Curves were developed for 18 Federal irrigation districts indicating in general constant cost industry. Conclusions were that Interior's acreage limitation policy would cause no appreciable loss in economic efficiency nor an increase in food costs. Implementation of full-cost water pricing to recapture Federal subsidies would greatly reduce the amount of water demanded and significantly impact production of forages and other high water using crops.
Dynamics and thermodynamics of rotators interacting with both long and short range couplings
Creators: name: Campa, Alessandro
name: Giansanti, Andrea
name: Mukamel, David
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The effect of nearest-neighbor coupling on the thermodynamic and dynamical properties of the ferromagnetic Hamiltonian Mean Field model (HMF) is studied. For a range of antiferromagnetic nearest-neighbor coupling, a canonical first order transition is observed, and the canonical and microcanonical ensembles are non-equivalent. In studying the relaxation time of non-equilibrium states it is found that as in the HMF model, a class of non-magnetic states is quasi-stationary, with an algebraic divergence of their lifetime with the number of degrees of freedom $N$. The lifetime of metastable states is found to increase exponentially with $N$ as expected.
description: 12 pages, 6 figures