cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation of the Potential Market and Estimation of WTP for Insurance of Pistachio Tree Trunk (Case Study Rafsanjan-Iran)
Creators: name: Baniasadi, Mostafa
name: Yazdani, Saeed
name: Salami, Habib Allah
name: Baniasadi, Mostafa
name: Yazdani, Saeed
name: Salami, Habib Allah
Publisher: name: Unknown
Year: 2013
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Political Economy
subject: Research Methods/ Statistical Methods
subject: Pistachio tree
subject: Contingent valuation
subject: WTP
subject: Logit model
subject: Rafsanjan

description: Capacity of garden productions in Iran is such that is accounted as a country that produces thirteen garden products in the world but despite excellent condition in Iran for producing garden products, natural disasters damage production of fruits in the country therefore farmers incur a loss. Pistachio tree has been in danger of destruction and dryness. Thus, in order to reduce loss incurred on trees, it is necessary to insure the tree. This study is aimed to investigate factors affecting willingness towards insurance of pistachio tree and to estimate willingness to pay premium for pistachio tree in Rafsanjan located in Kerman province. For this purpose, methods of contingent valuation and double bounded dichotomous have been used. Research data were obtained by field method and interview with 184 pistachio gardeners in 2012. Results suggest that willingness to pay premium of pistachio tree in central part, Anar and Kashkuieh has been estimated by 1953, 3255.8 and 1183.3 IRR per tree respectively. Considering results and high risk destruction of pistachio trees, it is suggested that premium of pistachio tree is offered to reduce risk and loss of pistachio gardeners. In order to determine premium in Rafsanjan, WTP calculated in this study can be used.
On Problems of the Lagrangian Quantization of W3-gravity
Creators: name: Geyer, B.
name: Gitman, D. M.
name: Lavrov, P. M.
name: Moshin, P. Yu.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the two-dimensional model of W3-gravity within Lagrangian quantization methods for general gauge theories. We use the Batalin-Vilkovisky formalism to study the arbitrariness in the realization of the gauge algebra. We obtain a one-parametric non-analytic extension of the gauge algebra, and a corresponding solution of the classical master equation, related via an anticanonical transformation to a solution corresponding to an analytic realization. We investigate the possibility of closed solutions of the classical master equation in the Sp(2)-covariant formalism and show that such solutions do not exist in the approximation up to the third order in ghost and auxiliary fields.
description: 18 pages, no figures
An integrable system on the moduli space of rational functions and its variants
Creators: name: Takasaki, Kanehisa
name: Takebe, Takashi
Publisher: name: arXiv
Year: 2002
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study several integrable Hamiltonian systems on the moduli spaces of meromorphic functions on Riemann surfaces (the Riemann sphere, a cylinder and a torus). The action-angle variables and the separated variables (in Sklyanin's sense) are related via a canonical transformation, the generating function of which is the Abel-Jacobi type integral of the Seiberg-Witten differential over the spectral curve.
description: 25 pages, AMS-LaTeX, no figure; minor changes
The Economic and Welfare Effects of Different irrigation Water Pricing Methods, Case Study of Khomein Plain in Markazi Province of Iran
Creators: name: Zamanian, Gholamreza
name: Jafari, Mehdi
name: Saeedian, Shahram
name: Zamanian, Gholamreza
name: Jafari, Mehdi
name: Saeedian, Shahram
Publisher: name: Unknown
Year: 2013
Subjects: subject: Farm Management
subject: Political Economy
subject: Economic and welfare effects
subject: Water pricing
subject: Mathematical programming
subject: Khomein plain

description: The scarcity of water resources and supply resources limitation, have caused an increasing gap between water supply and demand specially in recent decades in almost all regions of the globe. One of the best known solutions proposed by the economists is using the different water pricing approaches thereby obtaining the optimal allocation and social justice. To this purpose, this paper uses the positive Mathematical Programming (PMP) and Econometric Mathematical Programming (EMP) in a comparative analysis to study the economic and welfare impacts of alternative water pricing approaches in the agricultural sector during agricultural period 2011/2012 in Khomein plain of Markazi province in Iran. Results show that the EMP can be a better alternative approach instead of PMP to better analyze of agricultural policies. According to the final outcomes, it is suggested to apply the block tariff in place of volumetric pricing method to reach the optimal allocation and promoting the water efficiency in the price range of 198 to 853 Rials.
Predicting knee osteoarthritis severity: comparative modeling based on patient's data and plain X-ray images
Creators: name: Abedin, Jaynal
name: Antony, Joseph
name: McGuinness, Kevin
name: Moran, Kieran
name: O'Connor, Noel E
name: Rebholz-Schuhmann, Dietrich
name: Newell, John
Publisher: name: arXiv
Year: 2019
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Knee osteoarthritis (KOA) is a disease that impairs knee function and causes pain. A radiologist reviews knee X-ray images and grades the severity level of the impairments according to the Kellgren and Lawrence grading scheme; a five-point ordinal scale (0--4). In this study, we used Elastic Net (EN) and Random Forests (RF) to build predictive models using patient assessment data (i.e. signs and symptoms of both knees and medication use) and a convolution neural network (CNN) trained using X-ray images only. Linear mixed effect models (LMM) were used to model the within subject correlation between the two knees. The root mean squared error for the CNN, EN, and RF models was 0.77, 0.97, and 0.94 respectively. The LMM shows similar overall prediction accuracy as the EN regression but correctly accounted for the hierarchical structure of the data resulting in more reliable inference. Useful explanatory variables were identified that could be used for patient monitoring before X-ray imaging. Our analyses suggest that the models trained for predicting the KOA severity levels achieve comparable results when modeling X-ray images and patient data. The subjectivity in the KL grade is still a primary concern.
description: Published in Nature Scientific Reports, 2019
Hilbert's Theorem 90 and algebraic spaces
Creators: name: Schroeer, Stefan
Publisher: name: arXiv
Year: 2001
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A20, 14C22, 14F20

description: In modern form, Hilbert's Theorem 90 tells us that R^1f_*(G_m)=0, where f is the canonical map between the etale site and the Zariski site of a scheme X. I construct examples showing that the corresponding statement for algebraic spaces does not hold. The first example is a nonseparated smooth 1-dimensional bug-eyed cover in Kollar's sense. The second example is a nonnormal proper algebraic space obtained by identifying points on suitable nonprojective smooth proper schemes.
description: 6 pages, to appear in J. Pure Appl. Algebra
Propagation of tau neutrinos and tau leptons through the Earth and their detection in underwater/ice neutrino telescopes
Creators: name: Bugaev, Edgar
name: Montaruli, Teresa
name: Shlepin, Yuri
name: Sokalski, Igor
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If muon neutrinos produced in cosmological sources oscillate, neutrino telescopes can have a chance to detect tau-neutrinos. In contrast to muon neutrinos the Earth is completely transparent for tau neutrinos thanks to the short life time of tau-leptons produced in charged current interactions. Tau-lepton decaysin flight producing another tau neutrino (regeneration chain). Thus, tau neutrinos cross the Earth without being absorbed, though loosing energy both in regeneration processes and in neutral current interactions. Neutrinos of all flavors can be detected in deep underwater/ice detectors by means of Cherenkov light emitted by charged leptons produced in neutrino interactions. Muon and tau-leptons have different energy loss features, which provide opportunities to identify tau-events among the multitude of muons. Some signatures of tau-leptons that can be firmly established and are background free have been proposed in literature, such as 'double bang' events. In this paper we present results of Monte Carlo simulations of tau-neutrino propagation through the Earth accounting for neutrino interactions, tau energy losses and tau decays. Parameterizations for hard part and corrections to the soft part of the photonuclear cross-section (which contributes a major part to tau energy losses) are presented. Different methods of tau-lepton identification in large underwater/ice neutrino telescopes are discussed. Finally, we present a calculation of tau neutrino double bang event rates in cubic km scale detectors.
description: 29 pages, 14 figures, uses elsart.cls, elsart.sty, elsart12.sty, accepted by Astroparticle Physycs on March 20th, 2004
Noncommutative line bundle and Morita equivalence
Creators: name: Jurco, Branislav
name: Schupp, Peter
name: Wess, Julius
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Global properties of abelian noncommutative gauge theories based on $\star$-products which are deformation quantizations of arbitrary Poisson structures are studied. The consistency condition for finite noncommutative gauge transformations and its explicit solution in the abelian case are given. It is shown that the local existence of invertible covariantizing maps (which are closely related to the Seiberg-Witten map) leads naturally to the notion of a noncommutative line bundle with noncommutative transition functions. We introduce the space of sections of such a line bundle and explicitly show that it is a projective module. The local covariantizing maps define a new star product $\star'$ which is shown to be Morita equivalent to $\star$.
description: 17 pages
The Coulomb flux tube revisited
Creators: name: Dawid, Sebastian M.
name: Szczepaniak, Adam P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform $SU(2)$ Yang-Mills lattice simulation of the electric field distribution in the Coulomb gauge for different values of $β$ to further investigate the nature of the Coulomb flux tube.
description: 12 pages, 11 figures
Nontrivial RR two-form field strength and SU(3)-structure
Creators: name: Kaste, Peter
name: Minasian, Ruben
name: Petrini, Michela
name: Tomasiello, Alessandro
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss how in the presence of a nontrivial RR two-form field strength and nontrivial dilaton the conditions of preserving supersymmetry on six-dimensional manifolds lead to generalized monopole and Killing spinor equations. We show that the manifold is Kähler in the ten-dimensional string frame if F_0^{(1,1)}=0. We then determine explicitly the intrinsic torsion of the SU(3)-structure on six-manifolds that result via Kaluza-Klein reduction from seven-manifolds with G_2-structure of generic intrinsic torsion. Lastly we give explicitly the intrinsic torsion of the SU(3)-structure for an N=1 supersymmetric background in the presence of nontrivial RR two-form field strength and nontrivial dilaton.
description: LaTeX, 8 pages, talk given at the 35th Symposium Ahrenshoop, enlarged version of the contribution to the proceedings
THE BRITISH COLUMBIA WINE INDUSTRY: CAN IT COMPETE WITH THE BIG GUYS?
Creators: name: Cartier, Lee
name: Cartier, Lee
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: International Development
subject: British Columbia
subject: Wine Industry

description: In 1989, the Canada – United States Free Trade Agreement (FTA) was implemented and dramatically changed the course of the wine industry’s development in British Columbia (BC). The FTA forced the industry to make the transition from being highly protected, and inefficient, to a competitive market contender. Although considered initially to be a victim of the FTA, by 2010, the BC wine industry contributed $295.8 million to the BC economy, or 0.15% of provincial GDP, and provided 5,100 direct and indirect jobs; and is now considered by many to be a remarkable BC success story. This investigation traces the evolution of the industry from 2000 to 2010 by examining the structural changes that occurred in the industry’s value chain during that period. The study employs and industry cluster model to identify the relationships between the firms located in the Okanagan region. Results from the study show the growth in value added from all sectors of the value chain and identify several sources of the industry’s competitive advantage: extensive vertical integration, and a strong relationship to the tourism cluster. Conclusions are provided regarding the future challenges and opportunities facing the industry.
Spiritual values shape taxonomic diversity, vegetation composition, and conservation status in woodlands of the Northern Zagros, Iran
Creators: name: Shakeri, Zahed
name: Mohammadi-Samani, Kyumars
name: Bergmeier, Erwin
name: Plieninger, Tobias
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: endangered species
subject: in situ conservation
subject: religious beliefs
subject: sacred groves
subject: silvopastoral practices
subject: 300
subject: 580
subject: Iran
subject: Bedrohte Pflanzen
subject: Konservierung
subject: Biodiversität
subject: Religion
subject: Baumkult
subject: Wald

description: Gefördert durch den Publikationsfonds der Universität Kassel
BINGE DRINKING, ALCOHOL PRICES, AND ALCOHOL TAXES
Creators: name: Nelson, Jon P.
name: Nelson, Jon P.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Demand and Price Analysis
subject: Health Economics and Policy
subject: Binge Drinking
subject: Alcohol Prices
subject: Alcohol Taxes
subject: Youth
subject: Young Adults

description: Background - Heavy episodic (“binge”) drinking of alcohol has serious public health implications, especially for youth and young adults. However, previous reviews have failed to address in a comprehensive manner the effects of alcohol prices and taxes on binge drinking by gender and age group. Methods: A systematic review is performed for possible effects of alcohol prices and taxes on binge drinking for three age groups. Outcomes examined include binge participation, intensity and frequency. Fifty-six relevant economic studies were recovered, with results distributed equally among three age groups. Also recovered were five natural experiments for tax reductions and six field studies, which increased the country coverage. Criteria for inclusion/exclusion and potential sources of bias are discussed, including adequacy of price and tax data. Price-binge relationships are judged using a 95% confidence interval (p ≤ 0.05) for statistical significance. Results: More than half of economic studies report insignificant results for prices or taxes (30 null of 56 studies), with mixed results in 13 studies and significant results in only 13 studies. Null results are equally distributed across age groups, but some mixed results reflect different outcomes by gender. Prices or taxes are insignificant for 11 of 16 samples for men and 7 of 14 samples for women. Four of five natural experiments report null results for country-level tax cuts. Six field studies examine a variety of pricing methods and drink specials, but results are mixed. Conclusions: A large body of evidence now indicates that binge drinkers are not highly-responsive to increased prices or taxes, and may not respond at all. Nonresponsiveness holds generally for younger and older drinkers and for male and female binge drinkers alike. Increased alcohol prices or taxes are unlikely to be effective as a means to reduce binge drinking, regardless of gender or age group.
An Analysis of Wine Consumption Trends and Food-Related Expenditures in Japan
Creators: name: Omura, Makiko
name: Sakurai, Yuka
name: Ebihara, Kensuke
name: Omura, Makiko
name: Sakurai, Yuka
name: Ebihara, Kensuke
Publisher: name: Unknown
Year: 2013
Subjects: subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: wine
subject: food expenditure
subject: westernisation
subject: food service industry
subject: time-series/panel analysis
subject: Japan

description: This paper attempts to understand the mechanism of an upward trend in wine consumption in Japan by analysing its trend and possible correlations with food-related consumptions. Through the panel and time-series analyses of wine consumption and food-item expenditures, and of wine consumption and food-service industry sales, we investigate whether wine consumption is correlated with food westernization in Japan and whether wine is gaining its steady place in daily life of Japanese. Although not robust, we find supportive evidences for both, particularly for the second one. While on-premise consumption, in particular at reasonably priced diners, is estimated to be an important factor for growing wine consumption in Japan, there are possible evidences that home consumption of wine is increasing. It is also suggested that reasonably price wine, especially that of imported wine, are likely to be the key for future wine consumption in Japan.
Structured Illumination Microscopy using Digital Micro-mirror Device and Coherent Light Source
Creators: name: Li, Meiqi
name: Li, Yaning
name: Liu, Wenhui
name: Zhanghao, Karl
name: Xi, Peng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Image and Video Processing (eess.IV)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Structured illumination microscopy (SIM) achieves doubled spatial resolution by exciting the specimen with a high-contrast, high-frequency sinusoidal pattern. Such an excitation pattern can be generated by interference between multiple laser beams, which are diffracted from a grating. In SIM, 2D imaging requires 9 patterns and 3D imaging requires 15 patterns. Compared to mechanical movement of gratings, opti-electro devices provide rapid switch of the excitation patterns, in which Digital Micro-mirror Device (DMD) is most common in industry. Here we model DMD as the blazed grating and report a fast and cost-efficient SIM. Our home-built DMD-based laser interference structured illumination microscopy (DMD-ISIM) system reveals the nuclear pore complex and microtubule in mammalian cells with doubled spatial resolution. We further proposed multi-color DMD-ISIM system with simulation, which could potentially exploit the full power of DMD-ISIM.
Exactly solvable models for 2D correlated fermions
Creators: name: Langmann, Edwin
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: I discuss many-body models for interacting fermions in two space dimensions which can be solved exactly using group theory. The simplest example is a model of a quantum Hall system: 2D fermions in a constant magnetic field and a particular non-local 4-point interaction. It is exactly solvable due to a dynamical symmetry corresponding to the Lie algebra $\gl_\infty\oplus \gl_\infty$. There is an algorithm to construct all energy eigenvalues and eigenfunctions of this model. The latter are, in general, many-body states with spatial correlations. The model also has a non-trivial zero temperature phase diagram. I point out that this QH model can be obtained from a more realistic one using a truncation procedure generalizing a similar one leading to mean field theory. Applying this truncation procedure to other 2D fermion models I obtain various simplified models of increasing complexity which generalize mean field theory by taking into account non-trivial correlations but nevertheless are treatable by exact methods.
description: 19 pages; v2 substantially revised; further results added; v1 can be read as summary
Impact of stacking faults and domain boundaries on the electronic transport in cubic silicon carbide probed by conductive atomic force microscopy
Creators: name: Giannazzo, F.
name: Greco, G.
name: Di Franco, S.
name: Fiorenza, P.
name: Deretzis, I.
name: La Magna, A.
name: Bongiorno, C.
name: Zimbone, M.
name: La Via, F.
name: Zielinski, M.
name: Roccaforte, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In spite of its great promises for energy efficient power conversion, the electronic quality of cubic silicon carbide (3C-SiC) on silicon is currently limited by the presence of a variety of extended defects in the heteroepitaxial material. However, the specific role of the different defects on the electronic transport is still under debate. In this work, a macro- and nano-scale characterization of Schottky contacts on 3C-SiC/Si was carried out, to elucidate the impact of the anti-phase-boundaries (APBs) and stacking-faults (SFs) on the forward and reverse current-voltage characteristics of these devices. Current mapping of 3C-SiC by conductive atomic force microscopy (CAFM) directly showed the role of APBs as the main defects responsible of the reverse bias leakage, while both APBs and SFs were shown to work as preferential current paths under forward polarization. Distinct differences between these two kinds of defects were also confirmed by electronic transport simulations of a front-to-back contacted SF and APB. These experimental and simulation results provide a picture of the role played by different types of extended defects on the electrical transport in vertical or quasi-vertical devices based on 3C-SiC/Si, and can serve as a guide for improving material quality by defects engineering.
description: 20 pages, 7 figures
Validity of Rate Equations for Zeeman Coherences for Analysis of Nonlinear Interaction of Atoms with Laser Radiation
Creators: name: Blushs, Kaspars
name: Auzinsh, Marcis
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In this paper we, to our knowledge, for the first time obtain the rate equations for Zeeman coherences in the broad line approximation and steady-state balance equations directly from optical Bloch equations without the use of the perturbation theory. The broad line approximation allows us to use the adiabatic elimination procedure in order to eliminate the optical coherences from the optical Bloch equations, but the steady-state condition allows us to derive the balance equations straightforward. We compare our approach with the perturbation theory approach as given previously and show that our approach is more flexible in analyzing various experiments. Meanwhile we also show the validity and limitations of the application of the rate equations in experiments with coherent atomic excitation, when either broad line approximation or steady-state conditions hold. Thus we have shown the basis for modeling the coherent atomic excitation experiments by using the relatively simple rate equations, provided that certain experimental conditions hold.
Towards an ab initio theory for the temperature dependence of electric-field gradient in solids: application to hexagonal lattices of Zn and Cd
Creators: name: Nikolaev, A. V.
name: Chtchelkatchev, N. M.
name: Salamatin, D. A.
name: Tsvyashchenko, A. V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Based on ab initio band structure calculations we formulate a general theoretical method for description of the temperature dependence of electric field gradient in solids. The method employs a procedure of averaging multipole electron density component (l \neq 0) inside a sphere vibrating with the nucleus at its center. As a result of averaging each Fourier component (K \neq 0) on the sphere is effectively reduced by the square root of the Debye-Waller factor [exp(-W)]. The electric field gradient related to a sum of K-components most frequently decreases with temperature (T), but under certain conditions because of the interplay between terms of opposite signs it can also increase with T. The method is applied to calculations of the temperature evolution of the electric field gradients of pristine zinc and cadmium crystallized in the hexagonal lattice. For calculations within our model of crucial importance is the temperature dependence of mean-square displacements which can be taken from experiment or obtained from the phonon modes in the harmonic approximation. For the case of Zn we have used data obtained from single crystal x-ray diffraction. In addition, for Zn and Cd we have calculated mean-square displacements with the density functional perturbation treatment of the Quantum Espresso package. With the experimental data for displacements in Zn our calculations reproduce the temperature dependence of the electric field gradient very accurately. Within the harmonic approximation of the Quantum Espresso package the decrease of electric field gradients in Zn and Cd with temperature is overestimated. Our calculations indicate that the anharmonic effects are of considerable importance in the temperature dependence of electric field gradients.
description: 13 pages, 11 figures
MOESM2 of Cryptic intermediate snail host of the liver fluke Fasciola hepatica in Africa
Creators: name: Mahulu, Anna
name: Clewing, Catharina
name: BjÃ¶Rn Stelbrink
name: Chibwana, Fred
name: Immaculate Tumwebaze
name: J. Russell Stothard
name: Albrecht, Christian
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
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: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 2: Figure S2. BEAST molecular clock tree based on an HKY model and a substitution rate of 1%.
Supersymmetric and Kappa-invariant Coincident D0-Branes
Creators: name: Panda, Sudhakar
name: Sorokin, Dmitri
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a generic supersymmetric and kappa-invariant action for describing coincident D0-branes with non-abelian matter fields on their worldline. The action is shown to be in agreement with the Matrix Theory limit of the ND0-brane effective action.
description: JHEP style, 1+8 pages
Afforestation Adoption by Eastern U.S. Cattle Producers
Creators: name: Jensen, Kimberly L.
name: Zhang, Jun
name: Lambert, Dayton M.
name: Clark, Christopher D.
name: English, Burton C.
name: Larson, James A.
name: Yu, T. Edward
name: Hellwinckel, Chad
name: Claytor, Hannah
name: Jensen, Kimberly L.
name: Zhang, Jun
name: Lambert, Dayton M.
name: Clark, Christopher D.
name: English, Burton C.
name: Larson, James A.
name: Yu, T. Edward
name: Hellwinckel, Chad
name: Claytor, Hannah
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Production Economics
subject: Afforestation
subject: Cattle Producers
subject: Incentives
subject: Willingness to Adopt

description: Beef cattle production is responsible for approximately 2.2% of total US GHG production. In some agroecosystems, afforestation has the potential to sequester more carbon than other pasture and rangeland management practices. This research examines the factors, including an incentive, influencing afforestation on beef cattle farms east of the 100th meridian.
MOESM1 of Cryptic intermediate snail host of the liver fluke Fasciola hepatica in Africa
Creators: name: Mahulu, Anna
name: Clewing, Catharina
name: BjÃ¶Rn Stelbrink
name: Chibwana, Fred
name: Immaculate Tumwebaze
name: J. Russell Stothard
name: Albrecht, Christian
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1: Figure S1. Bayesian inference phylogram based on cox1. The two outgroups have been removed a posteriori. Bayesian posterior probabilities are provided next to each node (top: MrBayes, bottom: RAxML). Sequences obtained from GenBank are labelled plain whereas new sequences from this study are bold. Nodes 1 and 2 indicate the nodes for which divergence time estimates are discussed.
The renormalization group and fractional Brownian motion
Creators: name: Hochberg, David
name: Pérez-Mercader, Juan
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We find that in generic field theories the combined effect of fluctuations and interactions leads to a probability distribution function which describes fractional Brownian Motion (fBM) and ``complex behavior''. To show this we use the Renormalization Group as a tool to improve perturbative calculations, and check that beyond the classical regime of the field theory (i. e., when no fluctuations are present) the non--linearities drive the probability distribution function of the system away from classical Brownian Motion and into a regime which to the lowest order is that of fBM. Our results can be applied to systems away from equilibrium and to dynamical critical phenomena. We illustrate our results with two selected examples: a particle in a heat bath, and the KPZ equation.
description: 14 pages (REVTeX4), no figures
Local and global force balance for diffusiophoretic transport
Creators: name: Marbach, Sophie
name: Yoshida, Hiroaki
name: Bocquet, Lydéric
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Electro- and diffusio- phoresis of particles correspond respectively to the transport of particles under electric field and solute concentration gradients. Such interfacial transport phenomena take their origin in a diffuse layer close to the particle surface, and the motion of the particle is force-free. In the case of electrophoresis, it is further expected that the stress acting on the moving particle vanishes locally as a consequence of local electroneutrality. But the argument does not apply to diffusiophoresis, which takes its origin in solute concentration gradients. In this paper we investigate further the local and global force balance on a particle undergoing diffusiophoresis. We calculate the local tension applied on the particle surface and show that, counter-intuitively, the local force on the particle does not vanish for diffusiophoresis, in spite of the global force being zero as expected. Incidentally, our description allows to clarify the osmotic balance in diffusiophoresis, which has been a source of debates in the recent years. We explore various cases, including hard and soft interactions, as well as porous particles, and provide analytic predictions for the local force balance in these various systems. The existence of local stresses may induce deformation of soft particles undergoing diffusiophoresis, hence suggesting applications in terms of particle separation based on capillary diffusiophoresis.
Direct and Indirect Effects of Cash Transfers on Entrepreneurship
Creators: name: Ribas, Rafael P.
name: Ribas, Rafael P.
Publisher: name: Unknown
Year: 2014
Subjects: subject: Consumer/Household Economics
subject: Financial Economics
subject: Labor and Human Capital
subject: Public Economics
subject: Research Methods/ Statistical Methods
subject: Entrepreneurship
subject: Financial Constraints
subject: Informal Financing
subject: Risk-Sharing
subject: Cash Transfer
subject: Indirect Effect

description: This paper exploits a liquidity shock from a large-scale welfare program in Brazil to investigate the importance of credit constraints and informal financial assistance in explaining entrepreneurship. Previous research focuses exclusively on how liquidity shocks change recipients’ behavior through direct effects on reducing financial constraints. However, the shock may also produce spillovers from recipients to others through private transfers and thereby indirectly affect decisions to be an entrepreneur. This paper presents a method for decomposing the liquidity shock into direct effects associated with relieving financial constraints, and indirect effects associated with spillovers to other individuals. Results suggest that the program, which assists 20 percent of Brazilian households, has increased the number of small entrepreneurs by 10 percent. However, this increase is almost entirely driven by the indirect effect, which is related to an increase in private transfers among poor households. Thus the creation of small businesses seems to be more responsive to the opportunity cost of mutual assistance between households than to financial constraints.
Deconstructing Wheat Price Spikes: A Model of Supply and Demand, Financial Speculation, and Commodity Price Comovement
Creators: name: Adjemian, Michael K.
name: Janzen, Joseph
name: Carter, Colin A.
name: Smith, Aaron
name: Adjemian, Michael K.
name: Janzen, Joseph
name: Carter, Colin A.
name: Smith, Aaron
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: Financial Economics
subject: Research Methods/ Statistical Methods
subject: Commodity prices
subject: comovement
subject: futures
subject: index funds
subject: speculation
subject: wheat

description: In 2008, wheat futures prices spiked and then crashed along with prices for other agricultural and nonagricultural commodities. Market observers offered several theories to explain this common movement, or comovement, in prices, and have proposed policies to address the perceived problem of excessive price volatility. The design of an appropriate policy response would benefit from a better understanding of the cause of the observed price movements. This study uses an econometric model to decompose observed wheat prices into a set of economic factors and measure the relative contribution of each factor to observed price changes. Findings show that market-specific shocks related to supply and demand for wheat were the dominant cause of price spikes in the three U.S. wheat futures markets. Fluctuations in the global macroeconomy associated with broadbased demand shocks were relatively less significant for wheat than for other commodities like crude oil and corn. Finally, little evidence suggests commodity index trading contributed to recent price spikes.
Harmonic oscillator on noncommutative spaces
Creators: name: Dadic, I.
name: Jonke, L.
name: Meljanac, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A generalized harmonic oscillator on noncommutative spaces is considered. Dynamical symmetries and physical equivalence of noncommutative systems with the same energy spectrum are investigated and discussed. General solutions of three-dimensional noncommutative harmonic oscillator are found and classified according to dynamical symmetries. We have found conditions under which three-dimensional noncommutative harmonic oscillator can be represented by ordinary, isotropic harmonic oscillator in effective magnetic field.
description: 12 pages, Eq.(12)and the corresponding comment corrected, typos fixed
GMRT observations of a first sample of Extremely Inverted Spectrum Extragalactic Radio Sources (EISERS) candidates in the Northern sky
Creators: name: Mhaskey, Mukul
name: Gopal-Krishna
name: Paul, Surajit
name: Dabhade, Pratik
name: Salunkhe, Sameer
name: Bhagat, Shubham
name: Bendre, Abhijit
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present an extension of our search for Extremely Inverted Spectrum Extragalactic Radio Sources (EISERS) to the northern celestial hemisphere. With an inverted radio spectrum of slope $α$ > +2.5, these rare sources would either require a non-standard particle acceleration mechanism (in the framework of synchrotron self-absorption hypothesis), or a severe free-free absorption which attenuates practically all of their synchrotron radiation at metre wavelengths. By applying a sequence of selection filters, a list of 15 EISERS candidates is extracted out by comparing two large-sky radio surveys, WENSS (325 MHz) and TGSS-ADR1 (150 MHz), which overlap across 1.03$π$ steradian of the sky. Here we report quasi-simultaneous GMRT observations of these 15 EISERS candidates at 150 MHz and 325 MHz, in an attempt to accurately define their spectra below the turnover frequency. Out of the 15 candidates observed, two are confirmed as EISERS, since the slope of the inverted spectrum between these two frequencies is found to be significantly larger than the critical value $α_c$ = +2.5: the theoretical limit for the standard case of synchrotron self-absorption (SSA). For another 3 sources, the spectral slope is close to, or just above the critical value $α_c$. Nine of the sources have GPS type radio spectra. The parsec-scale radio structural information available for the sample is also summarised.
description: Accepted for publication in MNRAS. Comments are welcome
Some functorial properties of Schatten classes
Creators: name: Singh, Lav Kumar
name: Verma, Arvind Kumar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Functional Analysis (math.FA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 47B10

description: In this paper, we begin with the study of elements in $C^*$-algebras which are mapped to Schatten class ideals through faithful left regular representation. We further give some functorial properties of Schatten classes on the category of representations of a $C^*$-algebra and category of unitary representations of a group.
description: 8 pages
title: DJEBEL FKIRINE
title: DJEBEL FKIRINE
title: Atlas archéologique de la Tunisie
Creators: name: Babelon, Ernest Charles François
name: Babelon, Ernest Charles François > Auteur
name: Cagnat, René Louis Victor > Auteur
name: Reinach, Salomon > Auteur
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: Archéologie
subject: Antiquité
subject: Recherche archéologique
subject: Savoirs (Les)
subject: Cartographie
subject: Atlas
subject: Atlas archéologique

description: [Atlas archéologique de la Tunisie ; Edition spéciale des cartes topographiques publiées par la ministère de la Guerre, accompagnée d’un texte explicatif rédigé par E. Babelon, R. Cagnat et S. Reinach, membres de la Commission de l’Afrique du Nord (1ère série, 60 feuilles au 1/50 000 et notices)]
description: Atlas
description: Atlas-Archeo-Tunisie_042
description: 1/50 000
description: La Méditerranée à la carte
description: Paris
description: Source: Institut de recherche sur le Maghreb contemporain (IRMC); Cité numérique de la Méditerranée (MMSH)
description: Source: La Méditerranée à la carte
description: Source: La Méditerranée à la carte > Atlas archéologique de la Tunisie
description: Relation: https://cinumed.mmsh.univ-aix.fr/idurl/1/96220
description: Coverage: Djebel Fkirine
description: Coverage: Tunisie
description: Coverage: Antiquité
description: Temporal: Antiquité
description: Provenance: Institut de recherche sur le Maghreb contemporain (IRMC); Cité numérique de la Méditerranée (MMSH)
MOESM2 of Protocol for a phase III wait-listed cluster randomised controlled trial of an intervention for mental well-being through enhancing mental health literacy and improving work friendliness in Hong Kong
Creators: name: Lam, Lawrence
name: Wong, Prudence
name: Lam, Mary
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 2. Participant Information and Consent Form.
Constant mean curvature foliations of flat space--times
Creators: name: Andersson, Lars
Publisher: name: arXiv
Year: 2001
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let $V$ be a maximal globally hyperbolic flat $n+1$--dimensional space--time with compact Cauchy surface of hyperbolic type. We prove that $V$ is globally foliated by constant mean curvature hypersurfaces $M_τ$, with mean curvature $τ$ taking all values in $(-\infty, 0)$. For $n \geq 3$, define the rescaled volume of $M_τ$ by $\Ham = |τ|^n \Vol(M,g)$, where $g$ is the induced metric. Then $\Ham \geq n^n \Vol(M,g_0)$ where $g_0$ is the hyperbolic metric on $M$ with sectional curvature -1. Equality holds if and only if $(M,g)$ is isometric to $(M,g_0)$.
description: 20 pages
Employment Transitions among the self-employed during the Great Recession
Creators: name: Beckhusen, Julia
name: Beckhusen, Julia
Publisher: name: Unknown
Year: 2014
Subjects: subject: Labor and Human Capital
subject: Public Economics
subject: Self-employment
subject: unemployment
subject: longitudinal data

description: Entrepreneurs base their decision to start a business on a range of factors, from age, education and assets to macroeconomic conditions. While the majority of these factors have a well-understood impact on entering and exiting self-employment, the effect of macroeconomic conditions is less clear. During periods of recession, self-employment may increase due to its attractiveness as an alternative to unemployment. However, the difficulty of maintaining a business through the downturn can lead to a decrease in the self-employed. Understanding the transitions in and out of self-employment would help us better appreciate how entrepreneurs experience recessions. We use a robust set of longitudinal data from the Survey of Income and Program Participation (SIPP) to analyze the movements between self-employment, unemployment and wage-work during the Great Recession. The results suggest that the probability of entering self-employment depends on characteristics of the individual while movements out of self-employment are contingent on characteristics of the business. Furthermore, transitions from unemployment to self-employment increased during the recession months and transitions from self-employment to wage-work increased in the post recession months.
VSH Queens: Factors Influencing their Adoption
Creators: name: Leiby, Julie
name: Westra, John
name: Leiby, Julie
name: Westra, John
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Farm Management
subject: Production Economics
subject: Risk and Uncertainty
subject: honey bees
subject: Varroa mites
subject: Varroa Sensitive Hygiene (VSH)
subject: queen bees
subject: probit
subject: technology adoption

description: There are many threats that contribute to the decline in honey bee colonies around the United States; among them is the Varroa mite, Varroa destructor. The Varroa mite is a significant threat to honey bees and, by extension, beekeepers across the United States. It is suspected to be one of the main contributors to the increase in colony collapse and the decline in bee numbers and the beekeeping industry (Danka, 2013). In 2006, the Varroa Sensitive Hygiene (VSH) genetic line of bees was developed in response to the destruction associated with the Varroa mite. The hygienic behavior of this line of bees helps reduce susceptibility of colonies to Varroa mites and results in stronger colonies with increasing bee populations (Rinderer, 2010). Relatively little information exists on the adoption level of VSH technology in the beekeeping community and beekeeper’s perceptions of VSH technology. The objective of this study is to identify and discuss factors that significantly influence the decision of adopting VSH technology. Using data collected from a sample of 228 queen breeders across the United States that previously adopted other Varroa sensitive technologies, a probit model is used to analyze the factors involved in influencing the adoption of VSH queens by queen breeders. Results indicate that education level, being risk averse and income all had a significant influence on the adoption decision.