cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamic structure factor of the Ising model with purely relaxational dynamics
Creators: name: Calabrese, P.
name: Martin-Mayor, V.
name: Pelissetto, A.
name: Vicari, E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compute the dynamic structure factor for the Ising model with a purely relaxational dynamics (model A). We perform a perturbative calculation in the $ε$ expansion, at two loops in the high-temperature phase and at one loop in the temperature magnetic-field plane, and a Monte Carlo simulation in the high-temperature phase. We find that the dynamic structure factor is very well approximated by its mean-field Gaussian form up to moderately large values of the frequency $ω$ and momentum $k$. In the region we can investigate, $kξ\lesssim 5$, $ωτ\lesssim 10$, where $ξ$ is the correlation length and $τ$ the zero-momentum autocorrelation time, deviations are at most of a few percent.
description: 21 pages, 3 figures
Additional file 4 of Community knowledge, attitudes and practices towards malaria in Ha-Lambani, Limpopo Province, South Africa: a cross-sectional household survey
Creators: name: Munzhedzi, Mukhethwa
name: McQuade, Elizabeth T. Rogawski
name: Guler, Jennifer L.
name: Shifflett, Piper E.
name: Krivacsy, Sara
name: Dillingham, Rebecca
name: Bessong, Pascal O.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 4: Table S4. Details the knowledge of malaria stratified by gender, age, educational level and total household income.
Coherent states for exactly solvable time-dependent oscillators generated by Darboux transformations
Creators: name: Cruz, Sara Cruz y
name: Razo, Ruben
name: Rosas-Ortiz, Oscar
name: Zelaya, Kevin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Darboux method is commonly used in the coordinate variable to produce new exactly solvable (stationary) potentials in quantum mechanics. In this work we follow a variation introduced by Bagrov, Samsonov, and Shekoyan (BSS) to include the time-variable as a parameter of the transformation. The new potentials are nonstationary and define Hamiltonians which are not integrals of motion for the system under study. We take the stationary oscillator of constant frequency to produce nonstationary oscillators, and also provide an invariant that serves to define uniquely the state of the system. In this sense our approach completes the program of the BSS method since the eigenfunctions of the invariant are an orthonormal basis for the space of solutions of the related Schrodinger equation. The orthonormality holds when the involved functions are evaluated at the same time. The dynamical algebra of the nonstationary oscillators is generated by properly chosen ladder operators and coincides with the Heisenberg algebra. We also construct the related coherent states and show that they form an overcomplete set that minimizes the quadratures defined by the ladder operators. These states are not invariant under time-evolution since their time-dependence relies on the basis of states and not on the complex eigenvalue that labels them. Some concrete examples are provided.
description: 25 pages, t figures
Structural and Nanochemical Properties of AlOx Layers in $Al/AlO_x/Al$-Layer Systems for Josephson Junctions
Creators: name: Fritz, S.
name: Radtke, L.
name: Schneider, R.
name: Luysberg, M.
name: Weides, M.
name: Gerthsen, D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The structural and nanochemical properties of thin $AlO_x$ layers are decisive for the performance of advanced electronic devices. For example, they are frequently used as tunnel barriers in Josephson junction-based superconducting devices. However, systematic studies of the influence of oxidation parameters on structural and nanochemical properties are rare up to now, as most studies focus on the electrical properties of $AlO_x$ layers. This study aims to close this gap by applying transmission electron microscopy in combination with electron energy loss spectroscopy to analyze the structural and nanochemical properties of differently fabricated $AlO_x$ layers and correlate them with fabrication parameters. With respect to the application of $AlO_x$ as tunnel barrier in superconducting Josephson junctions, $Al/AlO_x/Al$-layer systems were deposited on Si substrates. We will show that the oxygen content and structure of amorphous $AlO_x$ layers is strongly dependent on the fabrication process and oxidation parameters. Dynamic and static oxidation of Al yields oxygen-deficient amorphous $AlO_x$ layers, where the oxygen content ranges from x = 0.5 to x = 1.3 depending on oxygen pressure and substrate temperature. Thicker layers of stoichiometric crystalline $γ-Al_2O_3$ layers were grown by electron-beam evaporation of $Al_2O_3$ and reactive sputter deposition.
Additional file 3 of Community knowledge, attitudes and practices towards malaria in Ha-Lambani, Limpopo Province, South Africa: a cross-sectional household survey
Creators: name: Munzhedzi, Mukhethwa
name: McQuade, Elizabeth T. Rogawski
name: Guler, Jennifer L.
name: Shifflett, Piper E.
name: Krivacsy, Sara
name: Dillingham, Rebecca
name: Bessong, Pascal O.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3: Table S3. Details reported knowledge on malaria prevention and practices of participants by village .
Vertical Price Transmission in Serbian Wheat-to-Bread Supply Chain during the Global Commodity Price Peaks 2007/2008 and 2010/2011
Creators: name: Djuric, Ivan
name: Gotz, Linde
name: Glauben, Thomas
name: Djuric, Ivan
name: Gotz, Linde
name: Glauben, Thomas
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agricultural and Food Policy
subject: Research Methods/ Statistical Methods
subject: Markov-Switching Vector Error Correction Model
subject: policy interventions
subject: Serbia
subject: vertical price transmission
subject: wheat-to-bread supply chain

description: We analyze how the governmental market interventions during the commodity price peaks 2007/2008 and 2010/2011 have affected the transmission of price changes along the wheat-to-bread supply chain in Serbia. We aim to investigate if consumers benefitted from the wheat and flour export restrictions or if other members along the supply chain were able to gain advantage. Our analysis of price dynamics between wheat and flour prices within a Markov Switching Vector Error Correction Model suggests that the mills increased their margin and thus profits in the aftermath of the food crisis. The simulation of bread production costs makes evident that bakeries and even more retailers profited substantially from the crisis policy. We find that consumers benefitted from the governmental interventions only to a limited degree and experienced overall welfare losses. Compared with laissez-faire policy, the bread price increase was dampened by the governmental market interventions only at the beginning of the crisis. The additional strong bread price increase in April 2008 indirectly resulted from the governmental wheat purchases from the Serbian market.
Poultry and Egg Statistics, 1960-85
Creators: name: Baker, Allen
name: Armstrong, Eunice
name: Baker, Allen
name: Armstrong, Eunice
Publisher: name: Unknown
Year: 1986
Subjects: subject: Livestock Production/Industries
subject: Research Methods/ Statistical Methods
subject: data
subject: poultry
subject: eggs
subject: broilers
subject: turkey
subject: production
subject: price

description: The statistical bulletin summarizes historical data for the poultry and egg industries. Data for production, prices, foreign trade, and storage of broilers, turkeys, and eggs are reported for the periods 1960-85.
U.S Rice Distribution Patterns, 1984/85
Creators: name: Holder, Shelby H.
name: Holder, Shelby H.
Publisher: name: Unknown
Year: 1986
Subjects: subject: Research Methods/ Statistical Methods
subject: Rice
subject: distribution patterns
subject: domestic rice outlets
subject: market shares
subject: package size
subject: milled rice

description: U.S. rice millers and repackagers distributed 33.7 million hundredweight (cwt) of rice in marketing year 1984/85 for three domestic uses: direct food, processed foods, and beer. This figure represents a 6.5-percent increase over shipments in 1982/83, the previous survey year. About half of U.S. rice production is used domestically; the rest is exported. Rice shipments for use directly in food rose by 2.5 million cwt, shipments for use in processed foods rose by 1.6 million cwt, and although reported rice shipments to the beer industry declined, use remained about the 'Jame. The sharp drop in U.S. rice exports in recent years may contribute to further expansion in the domestic rice market. This report, the sole source of detailed information on U.S. domestic rice distribution patterns for the 1984/85 marketing year, assesses proportional market shares and trends.
Lymaenon longior
Creators: name: Triapitsyn, Serguei V.
name: Koponen, Martti
name: Vikberg, Veli
name: Várkonyi, Gergely
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mymaridae
Lymaenon
Lymaenon longior

description: Lymaenon longior (Soyka, 1946)
  Material examined. N:  Nurmijärvi, M. Koponen: (6704:3381), edge of old forest, 24.vii.1992 (1 ♀, FMNH); Kiljava (6712:3373), dry meadows, 25.vii.1992,M.Koponen (1 ♀, FMNH);Raalantie (6710:3381), 27.vi.1995, gravel pit (1 ♀, FMNH).
 Distribution. Palaearctic Region (Austria, Belgium, Bulgaria, China, Denmark, France, Georgia, Germany, Greece, Hungary, Italy, Kyrgyzstan, Netherlands, Russia, Spain, Switzerland, Turkey, United Kingdom) (T*©ංൺඉංඍඌඒඇ 2013; Aංඌ*üൺඇ et al. 2020). New species record for Finland.
description: Published as part of Triapitsyn, Serguei V., Koponen, Martti, Vikberg, Veli & Várkonyi, Gergely, 2020, Taxonomy, annotated new records and a checklist of Mymaridae (Hymenoptera) of Finland, with description of a new species of Eustochus, pp. 565-589 in Acta Entomologica Musei Nationalis Pragae 60 (2) on page 583, DOI: 10.37520/aemnp.2020.39, http://zenodo.org/record/5177724
Food Consumption, Prices, and Expenditures, 1985
Creators: name: Bunch, Karen L.
name: Bunch, Karen L.
Publisher: name: Unknown
Year: 1987
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Research Methods/ Statistical Methods
subject: food consumption
subject: nutrients
subject: retail food prices
subject: wholesale food prices
subject: expenditures

description: Per capita food consumption rose 2.2 percent in 1985 to a record high. Crop product consumption was up 3.4 percent, while animal food increased 1.4 percent. This bulletin presents 1965-85 data on per capita food consumption, prices, nutrient availability, food expenditures, and U.S. income and population. Food consumption data are based on estimates of production and marketing of food products and are not direct estimates of consumption. Per capita red meat consumption increased 0.7 pound, per person increased slightly. Fresh fruit consumption rose 0.7 pound per person, while fresh vegetable consumption increased 0.7 pound. Total sweetener consumption rose slightly.
Modelling transverse dunes
Creators: name: Schwämmle, Veit
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Transverse dunes appear in regions of mainly unidirectional wind and high sand availability. A dune model is extended to two dimensional calculation of the shear stress. It is applied to simulate dynamics and morphology of transverse dunes which seem to reach translational invariance and do not stop growing. Hence, simulations of two dimensional dune fields have been performed. Characteristic laws were found for the time evolution of transverse dunes. Bagnold's law of the dune velocity is modified and reproduced. The interaction between transverse dunes led to interesting results which conclude that small dunes can pass through bigger ones.
description: Submitted to Earth Surface Processes and Landforms
A Simulation Algorithm for Brownian Dynamics on Complex Curved Surfaces
Creators: name: Yang, Yuguang
name: Li, Bo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Brownian dynamics of colloidal particles on complex surfaces has found important applications in diverse physical, chemical and biological processes. However, current Brownian dynamics simulation algorithms mostly work for relatively simple surfaces that can be analytically parameterized. In this work, we develop an algorithm to enable Brownian dynamics simulation on extremely complex surfaces. We approximate complex surfaces with triangle mesh surfaces and employ a novel scheme to perform particle simulation on these triangle mesh surfaces. Our algorithm computes forces and velocities of particles in global coordinates but updates their positions in local coordinates, which benefits from the advantages of simulation schemes in both global and local coordinate alone. We benchmark the proposed algorithm with theory and then simulate Brownian dynamics of both single and multiple particles on torus and knot surfaces. The results show that our method captures well diffusion, transport, and crystallization of colloidal particles on complex surfaces with non-trivial topology. This study offers an efficient strategy for elucidating the impact of curvature, geometry, and topology on particle dynamics and microstructure formation in complex environments.
Fertilizer Use and Price Statistics, 1960-85
Creators: name: Vroomen, Harry
name: Vroomen, Harry
Publisher: name: Unknown
Year: 1987
Subjects: subject: Research Methods/ Statistical Methods
subject: Fertilizer consumption
subject: primary giant nutrients
subject: nitrogen
subject: phosphate
subject: potash
subject: application rates
subject: percentage of acreage fertilized
subject: farm prices paid
subject: producer price index
subject: direct application materials
subject: mixed fertilizer
subject: secondary nutrients
subject: and micronutrients.

description: The rapid growth in fertilizer consumption throughout the sixties and seventies peaked at 23.7 million nutrient tons in 19R1. U.S. plant nutrient use has since dropped by varying amounts because of fewer crop acres and stabilizing application rates. By 19R,), plant nutrient use totaled 21.7 million tons. Farm fertilizer prices, while stable or declining during the sixties, have shown greater variability since 1974. Statistics in this bulletin include quarterly (or semiannual) time series for farm fertilizer prices, annual farm and wholesale fertilizer price indexes, fertilizer consumption by plant nutrient and major product, and consumption of mixed fertilizers, secondary nutrients, and micronutrients. Also included are annual statistics on fertilizer use per acre by nutrient in the major producing States for corn, cotton, soybeans, and wheat (1964-85).
Positive and Negative Externalities in Agricultural Production: The Case of Adena Springs Ranch
Creators: name: Moss, Charles B.
name: Schmitz, Andrew
name: Moss, Charles B.
name: Schmitz, Andrew
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Production Economics
subject: grass-fat
subject: hormone-free
subject: water allocation
subject: welfare analysis

description: Policy analysis is complicated by the myriad of benefits and costs generated by the use of natural resources. This study develops three benefits that must be considered in the granting of a consumptive use permit for water filed by Adena Springs Ranch, east of Ocala, Florida. This ranch is hoping to expand into grass-fat beef; but to do so, it needs additional water for irrigation. Specifically, our analysis considers the potential gain from the ranch, the potential negative effect on existing permit holders and environmental uses of water, and the possible positive value generated by the increased surface flow for other recreational users in eastern Marion County.
The U.S. Tobacco Buyout: A Partial and General Equilibrium Analysis
Creators: name: Schmitz, Andrew
name: Haynes, D.J.
name: Schmitz, Troy G.
name: Schmitz, Evan D.
name: Schmitz, Andrew
name: Haynes, D.J.
name: Schmitz, Troy G.
name: Schmitz, Evan D.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Environmental Economics and Policy
subject: Health Economics and Policy
subject: Labor and Human Capital
subject: addiction
subject: general equilibrium
subject: healthcare costs
subject: production quotas
subject: tobacco
subject: welfare economics

description: This article analyzes the impact of removing the U.S. tobacco program in both a partial and general welfare economics framework. In a partial-equilibrium framework, a consumer taxfunded quota buyout can result in producer gains, consumer losses, net losses resulting from higher prices, and deadweight losses. In a general-equilibrium framework, society can gain from the buyout resulting from considerable potential savings from reduced healthcare costs attributable to a reduction in smoking. Additionally, we present a model that addresses the addictive qualities of tobacco while considering the effects of the quota buyout. We also conclude that another possible effect of the buyout is an increase in worker productivity because employees who are able to quit smoking reduce the amount of smoking-related sick days taken.
Accounting for Externalities in Benefit–Cost Measures: An Analysis of a Land Buyout and Associated Projects to Save the Everglades
Creators: name: Schmitz, Andrew
name: Kennedy, P. Lynn
name: Hill-Gabriel, Julie
name: Schmitz, Andrew
name: Kennedy, P. Lynn
name: Hill-Gabriel, Julie
Publisher: name: Unknown
Year: 2013
Subjects: subject: Environmental Economics and Policy
subject: benefits
subject: buyouts
subject: costs
subject: Everglades
subject: U.S. Sugar Corporation

description: As part of efforts to restore the Everglades, in 2008, Governor Crist of Florida proposed the acquisition of 187,000 acres of land from the U.S. Sugar Corporation (U.S. Sugar) for this purpose, but the final purchase in August 2010 totaled only 26,800 acres. This article presents the history behind the alternatives, including the buyout of U.S. Sugar land, to improve Florida’s water quality and the health of the Everglades. To determine the benefits and costs of several of the U.S. Sugar land buyout proposals, a spatial price equilibrium model of the U.S. sugar market is developed. Within this framework, all the benefit–cost ratios calculated show that the benefits are less than the costs. Our analysis uses the concept of an Environmental Equivalent, which is the dollar amount of environmental benefits needed from the Everglades restoration or water quality projects to generate benefits that are as great as or greater than its costs. Also, we consider, within the context of ex ante vs. ex post benefit–cost analysis, the developments to clean up the Everglades since the U.S. Sugar land purchase.
Nonextensive statistical mechanics: Some links with astronomical phenomena
Creators: name: Tsallis, Constantino
name: Prato, Domingo
name: Plastino, Angel R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A variety of astronomical phenomena appear to not satisfy the ergodic hypothesis in the relevant stationary state, if any. As such, there is no reason for expecting the applicability of Boltzmann-Gibbs (BG) statistical mechanics. Some of these phenomena appear to follow, instead, nonextensive statistical mechanics. In the same manner that the BG formalism is based on the entropy $S_{BG}=-k \sum_i p_i \ln p_i$, the nonextensive one is based on the form $S_q=k(1-\sum_ip_i^q)/(q-1)$ (with $S_1=S_{BG}$). The stationary states of the former are characterized by an {\it exponential} dependence on the energy, whereas those of the latter are characterized by an (asymptotic) {\it power-law}. A brief review of this theory is given here, as well as of some of its applications, such as the solar neutrino problem, polytropic self-gravitating systems, galactic peculiar velocities, cosmic rays and some cosmological aspects. In addition to these, an analogy with the Keplerian elliptic orbits {\it versus} the Ptolemaic epicycles is developed, where we show that optimizing $S_q$ with a few constraints is equivalent to optimizing $S_{BG}$ with an infinite number of constraints.
description: 23 pages including one EPS figure. To appear in the Proceedings of the XIth United Nations / European Space Agency Workshop on Basic Space Sciences, Office for Outer Space Affairs / United Nations (Cordoba, 9-13 September 2002), ed. H. Haubold, special issue of Astrophysics and Space Science (Kluwer Academic Publishers, Dordrecht, 2003). It includes a reply to the criticism by M. Nauenberg, cond-mat/0210561 [version 2]
Polynema (Polynema) valkenburgense Soyka 1931
Creators: name: Triapitsyn, Serguei V.
name: Koponen, Martti
name: Vikberg, Veli
name: Várkonyi, Gergely
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Hypocreales
Clavicipitaceae
Polynema
Polynema valkenburgense

description: Polynema (Polynema) valkenburgense Soyka, 1931
  Material examined. N:  Nurmijärvi, M. Koponen: Kiljava (6712:3373), dry meadows, 20.v.1993 (8 ♀♀, FMNH); Raalantie, Ahola (6710:3381), gravel pits, 23.vi.1996 (1 ♀, FMNH).
 Distribution. Palaearctic Region (Belgium, Bulgaria, Netherlands, Romania, Sweden, Switzerland, Turkey, United Kingdom) (Nඈඒൾඌ 2019). New species record for Finland.
description: Published as part of Triapitsyn, Serguei V., Koponen, Martti, Vikberg, Veli & Várkonyi, Gergely, 2020, Taxonomy, annotated new records and a checklist of Mymaridae (Hymenoptera) of Finland, with description of a new species of Eustochus, pp. 565-589 in Acta Entomologica Musei Nationalis Pragae 60 (2) on page 584, DOI: 10.37520/aemnp.2020.39, http://zenodo.org/record/5177724
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000 F. 178 Voghera, Servizio Geologico d'Italia - ISPRA
Creators: name: Vercesi, P.L.
name: Falletti, P.
name: Pasquini, C.
name: Papani, L.
name: Perotti, C.
name: Tucci, G.
Publisher: name: INFN Open Access Repository
Year: 2014
Subjects: carta geologica, Voghera, Piemonte, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n. 178 Voghera della Carta Geologica d'Italia alla scala 1:50.000. 168 pp.
U.S. Import Demand and Supply Response for Fresh Tomatoes, Cantaloupes, Onions, Oranges, and Spinach
Creators: name: Seale, James L.
name: Zhang, Lisha
name: Traboulsi, Mohamad R.
name: Seale, James L.
name: Zhang, Lisha
name: Traboulsi, Mohamad R.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Environmental Economics and Policy
subject: International Development
subject: acreage response
subject: cointegration
subject: error–correction model
subject: fruits
subject: import demand
subject: Rotterdam model
subject: supply response
subject: vegetables

description: Elasticities of import demand and supply often drive economic models, but few empirical estimates of these elasticities exist for vegetables and fruits. For those that do exist, most are outdated. Because elasticities change over time as income, prices, and market conditions change, outdated elasticity estimates may not be representative of changes in import quantities demanded or in acreages, yield, and quantities supplied. Moreover, import demand elasticities by country of origin for most vegetables and fruits are nonexistent. This article presents research that updates elasticity estimates for each of the selected product categories and includes production and trade implications.
On the nature of the low-temperature phase in discontinuous mean-field spin glasses
Creators: name: Montanari, Andrea
name: Ricci-Tersenghi, Federico
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The low-temperature phase of discontinuous mean-field spin glasses is generally described by a one-step replica symmetry breaking (1RSB) Ansatz. The Gardner transition, i.e. a very-low-temperature phase transition to a full replica symmetry breaking (FRSB) phase, is often regarded as an inessential, and somehow exotic phenomenon. In this paper we show that the metastable states which are relevant for the out-of-equilibrium dynamics of such systems are always in a FRSB phase. The only exceptions are (to the best of our knowledge) the p-spin spherical model and the random energy model (REM). We also discuss the consequences of our results for aging dynamics and for local search algorithms in hard combinatorial problems.
description: 14 pages, 7 figures
Domestic and Trade Implications of Leafy Green Marketing Agreement Type Policies and the Food Safety Modernization Act for the Southern Produce Industry
Creators: name: Paggi, Mechel S.
name: Yamazaki, Fumiko
name: Ribera, Luis
name: Palma, Marco
name: Knutson, Ronald D.
name: Paggi, Mechel S.
name: Yamazaki, Fumiko
name: Ribera, Luis
name: Palma, Marco
name: Knutson, Ronald D.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Environmental Economics and Policy
subject: economic impact
subject: food policy
subject: food safety
subject: fresh produce

description: Protecting the safety of the U.S. food supply is a shared responsibility. Accomplishing that task requires the efforts of multiple government agencies combined with private sector participation. Despite the best efforts of the public–private partnership, the presence of microbial contamination incidents continues to raise questions regarding the safety of the U.S. food supply. As a result, there have been increased efforts to take measures to enhance food safety by the government and industry groups. The passage of the Food Safety Modernization Act establishes an increasing role for government in establishing and enforcing food safety standards. This new initiative is designed to address food from domestic and foreign origins. These U.S. government initiatives combined with the labyrinth of food safety standards promoted by international organizations, foreign governments, private-sector retail food sales, food processors, and producers have a common foundation. All of these standards generally apply to four basic biohazards areas: soil, water, animals, and people. However, they all have an effect on the costs that producers and other members of the industry face as they attempt to implement and/or document the multitude of activities required for compliance. This article provides an overview of the evolution of food safety standards related to the fresh produce industry. An example of their potential consequences on the profitability of southern region vegetable producers is provided and the potential impact on import suppliers is discussed.
Perpendicular Ion Heating by Cyclotron Resonant Dissipation of Turbulently Generated Kinetic Alfvén Waves in the Solar Wind
Creators: name: Isenberg, Philip A.
name: Vasquez, Bernard J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Solar wind ions are observed to be heated in the directions perpendicular to the large-scale magnetic field, with preferential heating given to heavy ions. In the solar corona, this heating may be responsible for the generation of the wind itself. It is likely that this heating results from the dissipation of plasma turbulence, but the specific kinetic mechanism that produces these preferential effects is not known. Solar wind turbulence at proton scales is often characterized in terms of highly oblique kinetic Alfvén waves (KAWs), which have been thought to dissipate through the Landau resonance and yield parallel heating. We show that the quasilinear resonant cyclotron interaction between KAWs and solar wind ions can actually produce perpendicular ion heating. We present an illustrative calculation of a steady, critically balanced spectrum of KAWs acting on homogeneous ion distributions with a plasma \b{eta} = 0.1, representative of turbulent conditions in the fast solar wind near 20 Rs. The KAWs are described here by a two-fluid dispersion relation. We find that thermal protons are strongly heated in the perpendicular direction within a typical quasilinear time of several thousand gyroperiods, which corresponds to only a few minutes at 20 Rs. Alpha particles in the same fluctuation field are heated to similar perpendicular thermal speeds, equivalent to the greater than mass proportional perpendicular temperatures that are commonly observed. We discuss improvements to this simple model that may determine whether this mechanism can be responsible for the observed coronal and solar wind ion heating.
description: Astrophysical Journal, in press
Evolution of Blended Learning and its Prospects in Management Education
Creators: name: Serafim-Silva, Sheila
name: Spers, Renata Giovinazzo
name: Vázquez-Suárez, Luiz
name: Ramírez, Camilo Peña
Publisher: name: figshare
Year: 2022
Subjects: subject: 150302 Business Information Systems
subject: FOS: Economics and business
subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: 150308 International Business
subject: 80708 Records and Information Management (excl. Business Records and Information Management)
subject: FOS: Media and communications
subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: 150399 Business and Management not elsewhere classified
subject: 220102 Business Ethics
subject: 150314 Small Business Management
subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: 130309 Learning Sciences
subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: Purpose: The objective of this study was to identify the profile of academic research on blended learning in the world and propose a research agenda for the topic.  Theoretical framework: Recent literature has reported good results in both student performance and satisfaction in blended learning (Dziuban et al., 2004). However, there is still much to investigate and learn about BL because it is a recent development.  Design/methodology/approach: We analysed the profile of international publications on blended learning in management and business from 2001 to 2021. We identified when, who, where and what was published on the subject, singling out the authors and journals with the greatest impact based on the h-index and CiteScore (Scopus), as well as exploring the cooperation between countries. Findings: The volume of research has been increasing over the past twenty years, although there are only a few authors, institutions and reference journals contributing to the topic’s consolidation and the countries conducting the most joint research in co-authoring networks account for the largest volume of publications, authors and impact journals. Research, Practical & Social implications: We suggest a future research agenda and highlight the contributions made to executive and management education. Originality/value: The results indicate that the number of publications is growing, and the management and business area is the one that contributes the most, with the countries that produce in co-authorship also providing the most publications.
Dusty clumps in circumbinary discs
Creators: name: Poblete, Pedro P.
name: Cuello, Nicolás
name: Cuadra, Jorge
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observations have revealed that protoplanetary discs often exhibit cavities and azimuthal asymmetries such as dust traps and clumps. The presence of a stellar binary system in the inner disc regions has been proposed to explain the formation of these structures. Here, we study the dust and gas dynamics in circumbinary discs around eccentric and inclined binaries. This is done through two-fluid simulations of circumbinary discs, considering different values of the binary eccentricity and inclination. We find that two kinds of dust structures can form in the disc: a single horseshoe-shaped clump, on top of a similar gaseous over-density; or numerous clumps, distributed along the inner disc rim. The latter features form through the complex interplay between the dust particles and the gaseous spirals caused by the binary. All these clumps survive between one and several tens of orbital periods at the feature location. We show that their evolution strongly depends on the gas-dust coupling and the binary parameters. Interestingly, these asymmetric features could in principle be used to infer or constrain the orbital parameters of a stellar companion - potentially unseen - inside the inner disc cavity. Finally, we apply our findings to the disc around AB Aurigae.
description: 12 pages, 13 figures, accepted for publication in MNRAS
A spin-polarised first principles study of short dangling bond wires on Si(001)
Creators: name: Bird, C. F.
name: Bowler, D. R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Short dangling bond wires (DB wires), fabricated on H-terminated Si(001) surfaces, show patterns of displacement that depend on their length. We have performed density function calculations, with and without spin-polarisation, designed to investigate the atomic and electronic structure of these wires. As expected, we find that even length wires are accurately modelled by non-spin polarised calculations, whilst odd length wires must be modelled using spin-polarised calculations. In particular, the use of spin-polarisation provides quantative agreement with STM observations, rather than the qualitative agreement reported elsewhere.
description: 7 pages, 2 figures, 3 tables, submitted to Surf. Sci. Lett Changed in response to referee's comments
VCIOM-SPUTNIK Poll: February 2021
Creators: name: VCIOM (Russian Public Opinion Research Center)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: President of Russia approval (1); Prime Minister approval (1); State Duma of Russia (2); political party preference (2); mass protests (2); Internet usage (1); watch TV (1); trade unions (1); judicial system (1); Russian Orthodox church (1); personal financial situation (2); employment (2); sources of income (1); most important problems (5); rise in prices, inflation (2); Russian ruble and US dollar exchange rate fluctuations (3); unemployment (2); take out loans (2); spend or save money (1); savings (1); economic policy (1); social policy (1); foreign policy (1); direction of country (1); life satisfaction (2).
Soliton effects in dangling-bond wires on Si(001)
Creators: name: Bird, C. F.
name: Fisher, A. J.
name: Bowler, D. R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dangling bond wires on Si(001) are prototypical one dimensional wires, which are expected to show polaronic and solitonic effects. We present electronic structure calculations, using the tight binding model, of solitons in dangling-bond wires, and demonstrate that these defects are stable in even-length wires, although approximately 0.1 eV higher in energy than a perfect wire. We also note that in contrast to conjugated polymer systems, there are two types of soliton and that the type of soliton has strong effects on the energetics of the bandgap edges, with formation of intra-gap states between 0.1 eV and 0.2 eV from the band edges. These intra-gap states are localised on the atoms comprising the soliton.
description: 6 pages, 3 figures, 3 tables, submitted to Phys. Rev. B
Multicomponent compact Abelian-Higgs lattice models
Creators: name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the phase diagram and critical behavior of three-dimensional multicomponent Abelian-Higgs models, in which an N-component complex field z_x^a of unit length and charge is coupled to compact quantum electrodynamics in the usual Wilson lattice formulation. We determine the phase diagram and study the nature of the transition line for N=2 and N=4. Two phases are identified, specified by the behavior of the gauge-invariant local composite operator Q_x^{ab} = \bar{z}_x^a z_x^b - δ^{ab}/N, which plays the role of order parameter. In one phase, we have \langle Q_x^{ab}\rangle =0, while in the other Q_x^{ab} condenses. Gauge correlations are never critical: gauge excitations are massive for any finite coupling. The two phases are separated by a transition line. Our numerical data are consistent with the simple scenario in which the nature of the transition is independent of the gauge coupling. Therefore, for any finite positive value of the gauge coupling, we predict a continuous transition in the Heisenberg universality class for N=2 and a first-order transition for N=4. However, notable crossover phenomena emerge for large gauge couplings, when gauge fluctuations are suppressed. Such crossover phenomena are related to the unstable O(2N) fixed point, describing the behavior of the model in the infinite gauge-coupling limit.
description: 21 pages
Acraea petraea Boisduval 1847
Creators: name: Liseki, Steven D.
name: Vane-Wright, Richard I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Acraea
Acraea petraea

description: [Acraea petraea Boisduval, 1847]
 Larsen 1996: pl. 54, fig. 676i. d ’ Abrera 1997: 179 (3 figs). Bernaud and Murphy 2014: 153 (8 figs, Malawi). SI: Figure 3e – h.
 Forewing length: both sexes ca 23 – 30 mm.
description: Published as part of Liseki, Steven D. & Vane-Wright, Richard I., 2018, Butterflies (Lepidoptera: Papilionoidea) of Mount Kilimanjaro: Nymphalidae subfamily Helconiinae, pp. 2511-2552 in Journal of Natural History 52 (39 - 40) on page 2517, DOI: 10.1080/00222933.2018.1539780, http://zenodo.org/record/5177759
Divergent nematic susceptibility near the pseudogap critical point in a cuprate superconductor
Creators: name: Ishida, K.
name: Hosoi, S.
name: Teramoto, Y.
name: Usui, T.
name: Mizukami, Y.
name: Itaka, K.
name: Matsuda, Y.
name: Watanabe, T.
name: Shibauchi, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Superconductivity is a quantum phenomenon caused by bound pairs of electrons. In diverse families of strongly correlated electron systems, the electron pairs are not bound together by phonon exchange but instead by some other kind of bosonic fluctuations. In these systems, superconductivity is often found near a magnetic quantum critical point (QCP) where a magnetic phase vanishes in the zero-temperature limit. Moreover, the maximum of superconducting transition temperature Tc frequently locates near the magnetic QCP, suggesting that the proliferation of critical spin fluctuations emanating from the QCP plays an important role in Cooper pairing. In cuprate superconductors, however, the superconducting dome is usually separated from the antiferromagnetic phase and Tc attains its maximum value near the verge of enigmatic pseudogap state that appears below doping-dependent temperature T*. Thus a clue to the pairing mechanism resides in the pseudogap and associated anomalous transport properties. Recent experiments suggested a phase transition at T*, yet, most importantly, relevant fluctuations associated with the pseudogap have not been identified. Here we report on direct observations of enhanced nematic fluctuations in (Bi,Pb)2Sr2CaCu2O8+d by elastoresistance measurements, which couple to twofold in-plane electronic anisotropy, i.e. electronic nematicity. The nematic susceptibility shows Curie-Weiss-like temperature dependence above T*, and an anomaly at T* evidences a second-order transition with broken rotational symmetry. Near the pseudogap end point, where Tc is not far from its peak in the superconducting dome, nematic susceptibility becomes singular and divergent, indicating the presence of a nematic QCP. This signifies quantum critical fluctuations of a nematic order, which has emerging links to the high-Tc superconductivity and strange metallic behaviours in cuprates.
description: 6 pages, 5 figures
Quantum critical point in CuGeO3 doped with magnetic impurities
Creators: name: Demishev, S. V.
name: Inagaki, Y.
name: Markina, M. M.
name: Ohta, H.
name: Okubo, S.
name: Oshima, Y.
name: Pronin, A. A.
name: Sluchanko, N. E.
name: Samarin, N. A.
name: Glushkov, V. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using high frequency (up to 450 GHz) ESR and low temperature specific heat measurements we find that insertion of 1% Fe and 2% Co damps spin-Peierls and Neel transitions and for T<30K gives rise to onset of a quantum critical behaviour characteristic for a random dimer Griffiths phase.
description: 5 pages, 2 figures, to be published in Physica B
Acraea pudorina Staudinger 1885
Creators: name: Liseki, Steven D.
name: Vane-Wright, Richard I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nymphalidae
Acraea
Acraea pudorina

description: Acraea pudorina Staudinger, 1885
 Larsen 1996: pl. 54, fig. 678i. d ’ Abrera 1997: 167 (2 figs). SI: Figure 4a – h.
 Forewing length: male 27.5 – 30.5 mm [mean (n = 9) 28.83 mm, SD = 0.391]; female 24.0 – 31.0 mm [mean (n = 9) 27.94 mm, SD = 2.126].
 Note: the type locality of this species was given as Zanzibar but, as Kielland (1990, p. 162) suggests, this was almost certainly an error. Often considered to be a Kenyan endemic, despite its listing as such by Ackery et al. (1995, p. 244) and the uncertainty expressed by Larsen (1996, p. 373), this species does also occur in north-eastern Tanzania. Van Someren (1939, p.139, as A. acrita pudorina) notes two forms of male from the Chyulu Hills, southern Kenya: ‘ a dry form in which the marginal loops are obscure and the other in which these are clear and well defined. Six of the females are of the very dark blackish type ’. Females are somewhat olivaceous compared to the bright orange males. See note below concerning dry-season forms of A. utengulensis.
description: Published as part of Liseki, Steven D. & Vane-Wright, Richard I., 2018, Butterflies (Lepidoptera: Papilionoidea) of Mount Kilimanjaro: Nymphalidae subfamily Helconiinae, pp. 2511-2552 in Journal of Natural History 52 (39 - 40) on page 2518, DOI: 10.1080/00222933.2018.1539780, http://zenodo.org/record/5177759
Collinear Factorization in Wide-Angle Hadron Pair Production in $e^+e^-$ Annihilation
Creators: name: Moffat, E.
name: Rogers, T. C.
name: Sato, N.
name: Signori, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the inclusive unpolarized dihadron production cross section in the far from back-to-back region of $e^+ e^-$ annihilation in leading order pQCD using existing fragmentation function fits and standard collinear factorization, focusing on the large transverse momentum region where transverse momentum is comparable to the hard scale (the center-of-mass energy). We compare with standard transverse-momentum-dependent (TMD) fragmentation function-based predictions intended for the small transverse momentum region with the aim of testing the expectation that the two types of calculation roughly coincide at intermediate transverse momentum. We find significant tension, within the intermediate transverse momentum region, between calculations done with existing non-perturbative TMD fragmentation functions and collinear factorization calculations if the center-of-mass energy is not extremely large. We argue that $e^+ e^-$ measurements are ideal for resolving this tension and exploring the large-to-small transverse momentum transition, given the typically larger hard scales ($\gtrsim 10$ GeV) of the process as compared with similar scenarios that arise in semi-inclusive deep inelastic scattering and fixed-target Drell-Yan measurements.
description: 16 pages, 5 figures
Respective influences of pair breaking and phase fluctuations in disordered high Tc superconductors
Creators: name: Rullier-Albenque, F.
name: Alloul, H.
name: Tourbot, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Electron irradiation has been used to introduce point defects in a controlled way in the CuO2 planes of underdoped and optimally doped YBCO. This technique allows us to perform very accurate measurements of Tc and of the residual resistivity in a wide range of defect contents xd down to Tc=0. The Tc decrease does not follow the variation expected from pair breaking theories. The evolutions of Tc and of the transition width with xd emphasize the importance of phase fluctuations, at least for the highly damaged regime. These results open new questions about the evolution of the defect induced Tc depression over the phase diagram of the cuprates
description: 5 pages, 4 figures