cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Novel NN interaction and the spectroscopy of light nuclei
Creators: name: Shirokov, A. M.
name: Vary, J. P.
name: Mazur, A. I.
name: Zaytsev, S. A.
name: Weber, T. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nucleon-nucleon (NN) phase shifts and the spectroscopy of $A \le 6$ nuclei are successfully described by an inverse scattering potential that is separable with oscillator form factors.
description: 4 pages, 1 figure, 13 tables
Cavity Control over Heavy-Hole Spin Qubits in Inversion-Symmetric Crystals
Creators: name: Mutter, Philipp M.
name: Burkard, Guido
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The pseudospin of heavy-holes (HHs) confined in a semiconductor quantum dot (QD) represents a promising candidate for a fast and robust qubit. While hole spin manipulation by a classical electric field utilizing the Dresselhaus spin-orbit interaction (SOI) has been demonstrated, our work explores cavity-based qubit manipulation and coupling schemes for inversion-symmetric crystals forming a planar HH QD. Choosing the exemplary material Germanium (Ge), we derive an effective cavity-mediated ground state spin coupling that harnesses the cubic Rashba SOI. In addition, we propose an optimal set of parameters which allows for Rabi frequencies in the MHz range, thus entering the strong coupling regime of cavity quantum electrodynamics.
description: 6 pages, 3 figures
Attitudinal Survey: Dallas Eating Establishments Toward Texas Fed Beef
Creators: name: Branson, Robert E.
name: Carpenter, Zerle
name: Branson, Robert E.
name: Carpenter, Zerle
Publisher: name: Unknown
Year: 1970
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Texas
subject: Beef
subject: Attitude
subject: Eating Establishments
subject: Dallas

description: Report for Texas Cattle Feeders Association
Additional file 3 of Assembly and annotation of an Ashkenazi human reference genome
Creators: name: Shumate, Alaina
name: Zimin, Aleksey V.
name: Sherman, Rachel M.
name: Puiu, Daniela
name: Wagner, Justin M.
name: Olson, Nathan D.
name: Pertea, Mihaela
name: Salit, Marc L.
name: Zook, Justin M.
name: Salzberg, Steven L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3. Review history.
Additional file 8 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 8. Tabulates the results of sub-group analyses on cancer stage I, II and III combined and for cancer stage IV.
Principle of Equivalence at Planck scales, QG in locally inertial frames and the zero-point-length of spacetime
Creators: name: Padmanabhan, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Principle of Equivalence makes effects of classical gravity vanish in local inertial frames. What role does the Principle of Equivalence play as regards quantum gravitational effects in the local inertial frames? I address this question here from a specific perspective. At mesoscopic scales close to, but somewhat larger than, Planck length one could describe quantum spacetime and matter in terms of an effective geometry. The key feature of such an effective quantum geometry is the existence of a zero-point-length. When we proceed from quantum geometry to quantum matter, the zero-point-length will introduce corrections in the propagator for matter fields in a specific manner. On the other hand, one cannot ignore the self-gravity of matter fields at the mesoscopic scales and this will also modify the form of the propagator. Consistency demands that, these two modifications - coming from two different directions - are the same. I show that this non-trivial demand is actually satisfied. Surprisingly, the Principle of Equivalence, operating at sub-Planck scales, ensures this consistency in a subtle manner.
description: 16 pages; no figures
Level spectroscopy of the square-lattice three-state Potts model with a ferromagnetic next-nearest-neighbor coupling
Creators: name: Otsuka, Hiromi
name: Mori, Koutaro
name: Okabe, Yutaka
name: Nomura, Kiyohide
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the square-lattice three-state Potts model with the ferromagnetic next-nearest-neighbor coupling at finite temperature. Using the level-spectroscopy method, we numerically analyze the excitation spectrum of the transfer matrices and precisely determine the global phase diagram. Then we find that, contrary to a previous result based on the finite-size scaling, the massless region continues up to the decoupling point with ${\bf Z}_3\times{\bf Z}_3$ criticality in the antiferromagnetic region. We also check the universal relations among excitation levels to provide the reliability of our result.
description: 4 pages, 2 figures
An Analysis of a Special Cheese Promotion Program: Houston, Texas
Creators: name: Nichols, John P.
name: Stelly, Randall
name: Nichols, John P.
name: Stelly, Randall
Publisher: name: Unknown
Year: 1970
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Cheese
subject: Promotion
subject: Houston
subject: Texas

description: Report for American Dairy Association of AMPI
Additional file 7 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 7. Describes how health behaviour and survival status were assigned to cancer cases so as to produce the target relative risk in the simulated data sets.
Pairs of surface wave packets with zero-sum energy in the Hawking radiation analog
Creators: name: Guha, Anirban
name: Heifetz, Eyal
name: Gupta, Akanksha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Here we propose a minimal analog gravity setup and suggest how to select two surface gravity wave packets in order to mimic some key aspects of Hawking radiation from the horizon of non-rotating black holes. Our proposed setup, unlike the scattering problem conventionally studied, constitutes of a constant mean flow over a flat bathymetry, in which the two wave packets possess the same amount of wave action but equal and opposite (sign) amount of energy, thereby mimicking virtual particles created out of near horizon vacuum fluctuations. Attention is given to the physical mechanism relating to the signs of the wave action and energy norm with the wave's intrinsic and total phase speeds. We construct narrow wave packets of equal wave action, the one with positive energy and group speed propagates against the mean flow and escapes from the black hole as Hawking radiation, while the other with negative energy and group speed is drifted by the mean flow and falls into it. Hawking's prediction of low frequency mode amplification is satisfied in our minimal model by construction. We find that the centroid wavenumbers and surface elevation amplitudes of the wave packets are related by simple analytical expressions.
Medium modification of $γ$-jet fragmentation functions in Pb+Pb collisions at LHC
Creators: name: Chen, Wei
name: Cao, Shanshan
name: Luo, Tan
name: Pang, Long-Gang
name: Wang, Xin-Nian
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Coupled linear Boltzmann transport and hydrodynamic (CoLBT-hydro) model has been developed for simultaneous simulations of jet propagation and jet-induced medium excitation in heavy-ion collisions. Within this coupled approach, the final reconstructed jets in heavy-ion collisions include not only hadrons from the hadronization of medium modified jet shower partons from the linear Boltzmann transport (LBT) but also hadrons from the freeze-out of the jet-induced medium excitation in the hydrodynamic evolution of the bulk medium. Using the CoLBT-hydro model, we study medium modification of the fragmentation functions of $γ$-triggered jets in high-energy heavy-ion collisions at the Large Hadron Collider. The CoLBT-hydro model is shown to describe the experimental data not only on the suppression of leading hadrons within the jet cone at large momentum fraction $z_γ=p_T^h/p_T^γ$ relative to the transverse momentum of the trigger photon due to parton energy loss but also the enhancement of soft hadrons at small $z_γ$ and $z_{\rm jet}=p_T^h/p_T^{\rm jet}$ due to jet-induced medium excitation. There is no suppression of the fragmentation function, however, at large momentum fraction $z_{\rm jet}$ relative to the transverse momentum of the reconstructed jet due to trigger bias and medium modification of quark to gluon jet fraction. For jets whose final transverse momenta are comparable to or larger than that of the trigger photon, the trigger bias can lead to enhancement of the jet fragmentation function at large $z_{\rm jet}$.
description: 9 pages in RevTeX with 6 figures
TEMPROB: A Fortran IV Program for Calculating Temperature Probabilities from Extreme Minimum Temperature Data
Creators: name: Sporleder, Thomas L.
name: Sporleder, Thomas L.
Publisher: name: Unknown
Year: 1970
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: TEMPROB
subject: Temperature
subject: Probabilities
subject: Minimum

description: Texas Valley Citrus Committee
Link homology and Frobenius extensions
Creators: name: Khovanov, Mikhail
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Algebra (math.QA)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M27

description: We explain how rank two Frobenius extensions of commutative rings lead to link homology theories and discuss relations between these theories, Bar-Natan theories, equivariant cohomology and the Rasmussen invariant.
description: 13 pages, 2 figures
Solar UV$-$B$/$A radiation is highly effective in inactivating SARS$-$CoV$-$2
Creators: name: Nicastro, F.
name: Sironi, G.
name: Antonello, E.
name: Bianco, A.
name: Biasin, M.
name: Brucato, J. R.
name: Ermolli, I.
name: Pareschi, G.
name: Salvati, M.
name: Tozzi, P.
name: Trabattoni, D.
name: Clerici, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Solar UV$-$C photons do not reach Earth's surface, but are known to be endowed with germicidal properties that are also effective on viruses. The effect of softer UV$-$B and UV$-$A photons, which copiously reach the Earth's surface, on viruses are instead little studied, particularly on single$-$stranded RNA viruses. Here we combine our measurements of the action spectrum of Covid$-$19 in response to UV light, Solar irradiation measurements on Earth during the SARS$-$CoV$-$2 pandemics, worldwide recorded Covid$-$19 mortality data and our 'Solar$-$Pump' diffusive model of epidemics to show that (a) UV$-$B$/$A photons have a powerful virucidal effect on the single$-$stranded RNA virus Covid$-$19 and that (b) the Solar radiation that reaches temperate regions of the Earth at noon during summers, is sufficient to inactivate 63\perc of virions in open$-$space concentrations (1.5 x 103 TCID50$/$mL, higher than typical aerosol) in less than 2 min. We conclude that the characteristic seasonality imprint displayed world$-$wide by the SARS$-$Cov$-$2 mortality time$-$series throughout the diffusion of the outbreak (with temperate regions showing clear seasonal trends and equatorial regions suffering, on average, a systematically lower mortality), might have been efficiently set by the different intensity of UV$-$B$/$A Solar radiation hitting different Earth's locations at different times of the year. Our results suggest that Solar UV$-$B$/$A play an important role in planning strategies of confinement of the epidemics, which should be worked out and set up during spring$/$summer months and fully implemented during low$-$solar$-$irradiation periods.
description: 11 pages + 3 pages supplementary information
Additional file 2 of Assembly and annotation of an Ashkenazi human reference genome
Creators: name: Shumate, Alaina
name: Zimin, Aleksey V.
name: Sherman, Rachel M.
name: Puiu, Daniela
name: Wagner, Justin M.
name: Olson, Nathan D.
name: Pertea, Mihaela
name: Salit, Marc L.
name: Zook, Justin M.
name: Salzberg, Steven L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2:Figure S1, S2, and S3.
Boussinesq-Peregrine water wave models and their numerical approximation
Creators: name: Katsaounis, Theodoros
name: Mitsotakis, Dimitrios
name: Sadaka, George
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper we consider the numerical solution of Boussinesq-Peregrine type systems by the application of the Galerkin finite element method. The structure of the Boussinesq systems is explained and certain alternative nonlinear and dispersive terms are compared. A detailed study of the convergence properties of the standard Galerkin method, using various finite element spaces on unstructured triangular grids, is presented. Along with the study of the Peregrine system, a new Boussinesq system of BBM-BBM type is derived. The new system has the same structure in its momentum equation but differs slightly in the mass conservation equation compared to the Peregrine system. Further, the finite element method applied to the new system has better convergence properties, when used for its numerical approximation. Due to the lack of analytical formulas for solitary wave solutions for the systems under consideration, a Galerkin finite element method combined with the Petviashvili iteration is proposed for the numerical generation of accurate approximations of line solitary waves. Various numerical experiments related to the propagation of solitary and periodic waves over variable bottom topography and their interaction with the boundaries of the domains are presented. We conclude that both systems have similar accuracy when approximate long waves of small amplitude while the Galerkin finite element method is more effective when applied to BBM-BBM type systems.
Thermal Effects in Photoemission and Electron-Phonon Couplings of Fullerene
Creators: name: Bordoni, Andrea
name: Manini, Nicola
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We show that thermal effects play a relevant role in the determination of the electron-phonon couplings based on the intensity of the phonon-shakeup peaks in photoemission spectra. In particular, we re-consider the determination of the electron-phonon couplings of fullerene based on a fit of the photoemission spectrum of C60- in gas phase [Gunnarsson PRB 1995]. We show that taking thermal effects into account reduces the obtained couplings by approximately 10%.
description: Proceedings of the fullerene symposia of the 205rd Meeting of The Electrochemical Society San Antonio, TX, USA, May 9 - 13, 2004
Feasibility of a Central Onion Sales Organization for South Texas
Creators: name: Connolly, Chan C.
name: Connolly, Chan C.
Publisher: name: Unknown
Year: 1971
Subjects: subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Feasibility
subject: Onion Sales Organization
subject: Onion
subject: South Texas

description: Report for South Texas Onion Committee
Additional file 5 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 5. Shows the strength of associations between candidate confounding variables and one-year survival. Shows why age group is an important potential confounder as both the proportion surviving and proportion with the health behaviour present decrease in older age groups.
Neutrino quantum states and spin light in matter
Creators: name: Studenikin, Alexander
name: Ternov, Alexei
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: On the basis of the exact solutions of the modified Dirac equation for a massive neutrino moving in matter we develop the quantum theory of the spin light of neutrino ($SLν$). The expression for the emitted photon energy is derived as a function of the density of matter for different matter compositions. The dependence of the photon energy on the helicities of the initial and final neutrino states is shown explicitly. The rate and radiation power of the $SLν$ in matter are obtained with the emitted photon linear and circular polarizations being accounted for. The developed quantum approach to the $SLν$ in matter (which is similar to the Furry representation of electrodynamics) can be used in the studies of other processes with neutrinos in the presence of matter
description: 14 pages in LaTex, a modified version of hep-ph/0410297 (significant part of the review matherial has been removed, the photon polarization has been accounted for and discussion on the effect of different matter compositions has been added), to be published in Phys.Lett.B
Quenched invariance principle for simple random walk on percolation clusters
Creators: name: Berger, Noam
name: Biskup, Marek
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K37; 60F17; 82C41

description: We consider the simple random walk on the (unique) infinite cluster of super-critical bond percolation in $\Z^d$ with $d\ge2$. We prove that, for almost every percolation configuration, the path distribution of the walk converges weakly to that of non-degenerate, isotropic Brownian motion. Our analysis is based on the consideration of a harmonic deformation of the infinite cluster on which the random walk becomes a square-integrable martingale. The size of the deformation, expressed by the so called corrector, is estimated by means of ergodicity arguments.
description: 38 pages (PTRF format) 4 figures. Version to appear in PTRF
Dark matter distribution function from non-extensive statistical mechanics
Creators: name: Hansen, Steen H.
name: Egli, Daniel
name: Hollenstein, Lukas
name: Salzmann, Christoph
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present an analytical and numerical study of the velocity distribution function of self gravitating collisionless particles, which include dark matter and star clusters. We show that the velocity distribution derived through the Eddington's formula is identical to the analytical one derived directly from the generalized entropy of non-extensive statistical mechanics. This implies that self gravitating collisionless structures are to be described by non-extensive thermo-statistics. We identify a connection between the density slope of dark matter structures, γ, from ρ~ r^{-γ}, and the entropic index, q, from the generalized entropy, S_q. Our numerical result confirms the analytical findings of earlier studies and clarifies which is the correct connection between the density slope and the entropic index. We use this result to conclude that from a fundamental statistical mechanics point of view the central density slope of self gravitating collisionless dark matter structures is not constrained, and even cored dark matter structures are allowed with γ= 0. We find that the outer density slope is bounded by γ= 10/3.
description: 9 pages, 2 figures; extended discussion, added slope-q relation, added refs
A Game Theoretic Framework for Cooperative Benefits in South Africa’s Land Redistribution Process: A Case of Northern Kwa-Zulu Natal Sugarcane Farmland Transfers
Creators: name: Mbatha, C. Nhlanhla
name: Antrobus, G.G.
name: Mbatha, C. Nhlanhla
name: Antrobus, G.G.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Sugarcane
subject: farms
subject: redistribution
subject: productivity
subject: cooperation
subject: games

description: A good indicator of successful farm redistribution cases has to be the continuation of viable productivity rates in their post transfer periods. Continued productivity benefits all the stakeholders that are involved in the process. Unfortunately negative productivity levels have been reported in numerous South African land redistribution transfers in recent years. A game theoretic perspective is adopted to argue that cooperation among key stakeholders, which could be enforced through long term contracts between a land buyer, sellers and new owners, would lead to higher productivity levels and other benefits. Additional benefits would, for example, include market related prices paid by a buyer. Sugarcane farm transfer cases from two municipality districts in KwaZulu Natal province are used to show that the productivity rates in post transfer periods of cooperative land sales were more than 10% higher than the rates observed before such transfers. At the opposite end of the scale, the productivity rates in noncooperative land sales dropped by 16% after land takeovers. Furthermore, the prices paid for farms that became less productive after transfers were higher by more than 40% compared to those paid for productive farms. The cases illustrate the values of cooperative strategies in economic transactions.
Additional file 6 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 6. Shows the derivation of the mathematical relationship between the imputed relative risk and the true relative risk and thus introduces the formula used to correct for misclassification errors within the imputed health behaviours.
Configuration Lie groupoids and orbifold braid groups
Creators: name: Roushon, S K
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: Group Theory (math.GR)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: Primary: 14N20, 22A22, 20F36 Secondary: 55R80, 57R18

description: We propose two definitions of configuration Lie groupoids and in both the cases we prove a Fadell-Neuwirth type fibration theorem for a class of Lie groupoids. We show that this is the best possible extension, in the sense that, for the class of Lie groupoids corresponding to global quotient orbifolds with nonempty singular set, the fibration theorems do not hold. Secondly, we prove a short exact sequence of fundamental groups (called {\it pure orbifold braid groups}) of one of the configuration Lie groupoids of the Lie groupoid corresponding to the punctured complex plane with cone points. This shows the possibility of a quasifibration type Fadell-Neuwirth theorem for Lie groupoids. As consequences, first we see that the pure orbifold braid groups have poly-virtually free structure, which generalizes the classical braid group case. We also provide an explicit set of generators of the pure orbifold braid groups. Secondly, we prove that a class of affine and finite complex Artin groups are virtually poly-free, which partially answers the question if all Artin groups are virtually poly-free ([[4], Question 2]). Finally, combining this poly-virtually free structure and a recent result ([5]), we deduce the Farrell-Jones isomorphism conjecture for the above class of orbifold braid groups. This also implies the conjecture for the case of the affine Artin group of type $\tilde D_n$, which was left open in [[24], Problem].
description: Appeared in the Bulletin des Sciences Mathematiques
Irrigation water use efficiency in collective irrigated schemes of Tunisia: determinants and potential irrigation cost reduction
Creators: name: Chebil, Ali
name: Frija, Aymen
name: Abdelkafi, Belhassen
name: Chebil, Ali
name: Frija, Aymen
name: Abdelkafi, Belhassen
Publisher: name: Unknown
Year: 2010
Subjects: Resource /Energy Economics and Policy

description: This study aims first to measure the farm specific irrigation water use efficiency (IWUE), through non parametric DEA model; and second to evaluate the potential irrigation cost reductions and identify the main factors causing variations in IWUE among the sample farms. Cross sectional data collected from a sample of 75 farms participating in the WaDImena project in Nadhour region (northern Tunisia) was used for this aim. The results showed that the average level of IWUE across the farm sample was around 61.2% under variable returns to scale (VRS) assumption. However, the estimated mean irrigation water technical cost efficiency (ITCE) is much higher than IWUE. Farmers would be able to reduce their actual cost by 5% under VRS by adjusting irrigation water to its efficient level. This low level of cost reductions is consistent with the existing literature about IWUE in Tunisia. Moreover, education level of farmers, access to credit and agricultural extension service showed a positive relationship with the IWUE in our case study.
Additional file 2 of Is frequency of potato and white rice consumption associated with cardiometabolic risk factors in children and adolescents: the CASPIAN-V study
Creators: name: Baygi, Fereshteh
name: Qorbani, Mostafa
name: Motlagh, Mohammad Esmaeil
name: Shafiee, Gita
name: Nouri, Kourosh
name: Ahadi, Zeinab
name: Armita Mahdavi-Gorab
name: Heshmat, Ramin
name: Kelishadi, Roya
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 2.
Commercialization of Smallholders: Is Market Participation Enough?
Creators: name: Gebremedhin, Berhanu
name: Jaleta, Moti
name: Gebremedhin, Berhanu
name: Jaleta, Moti
Publisher: name: Unknown
Year: 2010
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: commercialization
subject: smallholders
subject: market orientation
subject: market participation

description: The literature on commercial transformation of smallholders makes little distinction between market orientation (production decision based on market signals) and market participation (sale of output). However, policy implications to enhance commercial transformation of subsistence agriculture drawn from the analysis of the determinants of household market participation alone could be inadequate, if in fact, the determinants of market orientation and market participation are not the same or not consistent with each other. This paper analyzes the determinants of market orientation and market participation in Ethiopia separately and examines if market orientation translates into market participation. Empirical results show that the determinants of market orientation and market participation in crop output markets are not the same, but market orientation translates strongly into market participation. Results imply that while interventions to enhance market orientation could also help in promoting market participation, interventions to promote market participation may not be adequate to promote market orientation.
Generalized parton distributions for dynamical equation models
Creators: name: Kvinikhidze, A. N.
name: Blankleider, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show how generalized parton distributions (GPDs) can be determined in the case where hadrons are described in terms of their partonic degrees of freedom through solutions of dynamical equations. We demonstrate our approach on the example of two-quark bound states described by the Bethe-Salpeter equation, and three-quark bound states described by three- and four-dimensional Faddeev-like equations. Within the model of strong interactions defined by the dynamical equations, all possible mechanisms contributing to the GPDs are taken into account, and all GPD sum rules are satisfied automatically. The formulation is general and can be applied to determine generalized quark distributions, generalized gluon distributions, transition GPDs, nucleon distributions in nuclei, etc. Our approach is based on the gauging of equations method.
description: 23 pages, 9 figures, revtex4, feynmf
Rational method for analysis and design of steel plate walls
Creators: name: Kharrazi, Mehdi Hadj Karim
Publisher: name: University of British Columbia
Year: 2009

description: A simple rational method is developed in this study to simulate the shear and bending behaviours of Steel Plate Wall (SPW) systems, and is referred to as the Modified Plate-Frame-Interaction (M-PFI) model. The model can determine force and displacement values that corresponded to pre- and post-critical buckling state, post-yield state and ultimate capacity of individual panels. Using the M-PFI model, design requirements of the beams and columns were determined. A new mathematical formulation was presented to determine the angle of inclination of the tension field. The M-PFI concept was applied to a proposed hysteresis model, to better predict the behaviour of the SPW under cyclic loading conditions. Two Ductile Steel Plate Walls (DSPWs) and a Steel Frame (SF) were tested under cyclic loading. Also shake table tests were conducted on DSPW and SF specimens. Based on experimental outcomes, the SPW system was found to be an excellent lateral load resisting system. Using Finite Element (FE) model, the response of the specimens was simulated. From comparing numerical outcomes with test results, it was concluded that FE method is an appropriate technique to model the response of an SPW. To evaluate the effectiveness of the method, outcomes using the M-PFI method were compared to experimental results from a number of SPWs tested at different universities and research institutes. A parametric study was also performed using the M-PFI method, where outcomes of this study were compared to outcomes obtained previously by other researchers using the FE method. The M-PFI model was found to have the ability to predict the initial stiffness, post- yield stiffness and yield point of the infill plate, as well as predict the failure mode of the system, including any deficiency which might cause failure. To demonstrate implementation of the M-PFI method in the design of an SPW system, three SPWs of different heights were designed. A step-by-step SPW design procedure was presented and discussed. Evaluation of the M-PFI design methodology was performed using the FE method and, as a result, the M-PFI method was found to be an effective method in the design of SPW systems.
Essays on the Economics of Environmental Management and Green Reputation
Creators: name: Komarek, Timothy M.
name: Komarek, Timothy M.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: 'Green' reputation
subject: pro-environmental behavior
subject: conjoint analysis
subject: climate change policy
subject: choice experiment
subject: institution

description: Many governments, firms, institutions and individuals have become increasingly cognizant of their impact on the environment, most notably with respect to global climate change. This coupled with a threat of future regulation and a desire for a ‘green’ image, among other reasons, has led firms and institutions to begin critically evaluating and managing their own “carbon footprint”. Effective programs to manage greenhouse gas emissions (GHG) benefit from understanding the preferences of the constituents the program intends to serve. This study uses a survey at Michigan State University to examine the preferences of constituents (students, faculty and staff) for attributes of alternative greenhouse gas (GHG) reduction strategies. The first essay examines how much respondents were willing to pay for GHG reduction program attributes and the welfare implications of several alternative policies. The second essay examines how the attributes of alternative GHG management plans influence the university’s ‘green’ reputation.
Economic Situation and Development Perspectives of Farms in Poland - An Analysis Based on Survey Data from Selected Polish Voivodships and a Comparison with German Farms
Creators: name: Petrick, Martin
name: Spychalski, Grzegorz
name: Switlyk, Michal
name: Tyran, Ewa
name: Petrick, Martin
name: Spychalski, Grzegorz
name: Switlyk, Michal
name: Tyran, Ewa
Publisher: name: Unknown
Year: 2002
Subjects: subject: International Development
subject: agriculture
subject: farm performance
subject: survey data
subject: Poland
subject: Germany

description: The aim of this paper is to present an analysis of farm-level data collected in a survey of 464 Polish farms in 2000. Performance indicators of farms in three Polish voivodships are compared with farm accountancy data from two German Länder. The results show that Polish farms are much less profitable than their German counterparts. The gap in income levels is much higher between persons employed in the agricultural sector than between average working persons in the two countries. Living standards of the Polish farm population in the north-west exceed those in the south-east of the country. The analysis suggests that the lower profitability of farms has two major reasons. First, farms in the German regions receive much higher levels of subsidies. Second, there are pronounced structural deficiencies due to a quite unfavourable workforce-land ratio on Polish farms. These farms are less productive and less specialized than the German farms analysed. There is a generally conservative attitude among Polish farmers that prefers the continuation of farming over leaving the sector. Nevertheless, income from agriculture is to a substantial extent complemented by off-farm employment in the southern regions. Our overall conclusion is that Polish farms currently are in the midst of a regional, economic, and social differentiation process fuelled by severe imbalances in terms of income levels between rural and urban population groups. This process is however seriously slowed down or even halted by a number of effective institutional barriers, particularly with regard to rural labour markets. These barriers should be properly addressed by a formulation of future policies in order to avoid further social frictions in the course of the Polish EU accession.
Suppression of Dyakonov-Perel Spin Relaxation in high mobility n-GaAs
Creators: name: Dzhioev, R. I.
name: Kavokin, K. V.
name: Korenev, V. L.
name: Lazarev, M. V.
name: Poletaev, N. K.
name: Zakharchenya, B. P.
name: Stinaff, E. A.
name: Gammon, D.
name: Bracker, A. S.
name: Ware, M. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report a large and unexpected suppression of the free electron spin relaxation in lightly-doped n-GaAs bulk crystals. The spin relaxation rate shows weak mobility dependence and saturates at a level 30 times less then that predicted by the Dyakonov-Perel theory. The dynamics of the spin-orbit field differs substantially from the usual scheme: although all the experimental data can be self-consistently interpreted as a precessional spin relaxation induced by a random spin-orbit field, the correlation time of this random field, surprisingly, is much shorter than, and is independent of, the momentum relaxation time determined from transport measurements. Understanding of this phenomenon could lead to high temperature engineering of the electron spin memory.
Modeling and mitigating human annotation errors to design efficient stream processing systems with human-in-the-loop machine learning
Creators: name: Pandey, Rahul
name: Purohit, Hemant
name: Castillo, Carlos
name: Shalin, Valerie L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: High-quality human annotations are necessary for creating effective machine learning-driven stream processing systems. We study hybrid stream processing systems based on a Human-In-The-Loop Machine Learning (HITL-ML) paradigm, in which one or many human annotators and an automatic classifier (trained at least partially by the human annotators) label an incoming stream of instances. This is typical of many near-real-time social media analytics and web applications, including annotating social media posts during emergencies by digital volunteer groups. From a practical perspective, low-quality human annotations result in wrong labels for retraining automated classifiers and indirectly contribute to the creation of inaccurate classifiers. Considering human annotation as a psychological process allows us to address these limitations. We show that human annotation quality is dependent on the ordering of instances shown to annotators and can be improved by local changes in the instance sequence/order provided to the annotators, yielding a more accurate annotation of the stream. We adapt a theoretically-motivated human error framework of mistakes and slips for the human annotation task to study the effect of ordering instances (i.e., an "annotation schedule"). Further, we propose an error-avoidance approach to the active learning paradigm for stream processing applications robust to these likely human errors (in the form of slips) when deciding a human annotation schedule. We support the human error framework using crowdsourcing experiments and evaluate the proposed algorithm against standard baselines for active learning via extensive experimentation on classification tasks of filtering relevant social media posts during natural disasters.
description: Accepted at International Journal of Human-Computer Studies on January 4th, 2022
Die neue Rolle von Sozialer Sicherung für ländliche Entwicklung in Entwicklungsländern
Creators: name: Jutting, Johannes Paul
name: Jutting, Johannes Paul
Publisher: name: Unknown
Year: 2002
Subjects: subject: Community/Rural/Urban Development
subject: Health Economics and Policy
subject: International Development
subject: social security
subject: micro insurance schemes
subject: developing countries

description: In the 1990ies the ultimate target of social security has been widened: Social security aims at protecting people against life risks and helping them to take advantage of social and economic opportunities. Existing social security systems in rural areas of developing countries are often “second best solutions” and need reforms. Institutional innovations such as micro insurance schemes are a promising way of improving the risk management of rural households. The example of community based health insurance schemes in Senegal shows, that rural households can be successfully integrated into insurance schemes. This allows a better access to health care and is an essential prerequisite for increasing labour productivity. Moreover, it offers in the mid to long term the chance to shift to more risky but also more profitable production systems. The discussion of the appropriate design of social security in rural areas of developing countries has yet started. Many questions are still open as e.g. the willingness of rural households to pay for insurance products, the optimal design of micro insurance schemes and the measurement of the effects of social security on productivity. Agricultural economics research can make substantial contributions in answering these questions.
Additional file 3 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 3. Shows the proportions of eligible SEER cancer cases that were unable to be matched with two donor records with non-missing smoking status.
Spin wave analysis of Heisenberg magnets in restricted geometries
Creators: name: Ivanov, N. B.
name: Sen, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the last decade it has been proven that the standard spin wave theory was able to provide accurate zero-temperature results for a number of low-dimensional Heisenberg spin systems. In this chapter we introduce the main ingredients of the spin-wave technique using as a working model the two-leg mixed-spin ferrimagnetic ladder and the Dyson--Maleev boson formalism up to second order in the spin-wave interaction. In the remainder, we survey typical applications in low-space dimensionality as well as some recent modifications of the theory admitting a quantitative analysis in magnetically disordered phases. The presented spin-wave results are compared with available numerical estimates.
description: A review article, Chapter 4 in: "Quantum Magnetism", edited by U. Schollwoeck et al. (Springer-Verlag, Berlin Heidelberg, 2004)
Additional file 4 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 4. Details the mathematical model used to quantify the agreement between the pairs or imputed values assigned to each cancer case.
Self-assembled line network in BiFeO3 thin films
Creators: name: Colson, B.
name: Fuentes, V.
name: Konstantinovic, Z.
name: Colson, D.
name: Forget, A.
name: Lazarevic, N.
name: Scepanovic, M.
name: Popovic, Z. V.
name: Frontera, C.
name: Balcells, Ll.
name: Martinez, B.
name: Pomar, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this work we report on the controlled fabrication of a self-assembled line network in highly epitaxial BiFeO3 thin films on top of LaAlO3 in the kinetically limited grown region by RF sputtering. As previously shown in the case of manganite thin films, the remarkable degree of ordering is achieved using vicinal substrates with well-defined step-terrace morphology. Nanostructured BiFeO3 thin films show mixed-phase morphology. Besides typical formation following (100) and (010) axes, some mixed phase nanodomains are detected also in-between the regular line network. These particular microstructures open a playground for future applications in multiferroic nanomaterials.
All Split Helicity Tree-Level Gluon Amplitudes
Creators: name: Britto, Ruth
name: Feng, Bo
name: Roiban, Radu
name: Spradlin, Marcus
name: Volovich, Anastasia
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently a new recursion relation for tree-level gluon amplitudes in gauge theory has been discovered. We solve this recursion to obtain explicit formulas for the closed set of amplitudes with arbitrarily many positive and negative helicity gluons in a split helicity configuration. The solution admits a simple diagrammatic expansion in terms of zigzag diagrams. We comment on generalizations of this result.
description: 15 pages, harvmac, v2: typos corrected
Additional file 2 of Augmenting cancer registry data with health survey data with no cases in common: the relationship between pre-diagnosis health behaviour and post-diagnosis survival in oesophageal cancer
Creators: name: Fahey, Paul P.
name: Page, Andrew
name: Stone, Glenn
name: Astell-Burt, Thomas
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 2. Charts the inclusion and exclusion of data records from both data sources.