cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Contracts, Markets, and Prices: Organizing the Production and Use of Agricultural Commodities
Creators: name: MacDonald, James M.
name: Perry, Janet E.
name: Ahearn, Mary Clare
name: Banker, David E.
name: Chambers, William
name: Dimitri, Carolyn
name: Key, Nigel D.
name: Nelson, Kenneth E.
name: Southard, Leland W.
name: MacDonald, James M.
name: Perry, Janet E.
name: Ahearn, Mary Clare
name: Banker, David E.
name: Chambers, William
name: Dimitri, Carolyn
name: Key, Nigel D.
name: Nelson, Kenneth E.
name: Southard, Leland W.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Production Economics

description: Production and marketing contracts govern 36 percent of the value of U.S. agricultural production, up from 12 percent in 1969. Contracts are now the primary method of handling sales of many livestock commodities, including milk, hogs, and broilers, and of major crops such as sugar beets, fruit, and processing tomatoes. Use of contracts is closely related to farm size; farms with $1 million or more in sales have nearly half their production under contract. For producers, contracting can reduce income risks of price and production variability, ensure market access, and provide higher returns for differentiated farm products. For processors and other buyers, vertical coordination through contracting is a way to ensure the flow of products and to obtain differentiated products, ensure traceability for health concerns, and guarantee certain methods of production. The traditional spot market-though it still governs nearly 60 percent of the value of agricultural production- has difficulty providing accurate price signals for products geared to new consumer demands (such as produce raised and certified as organic or identity-preserved crops modified for special attributes). We are likely to see a continuing shift to more explicit forms of vertical coordination, through contracts and processor ownership, as a means to ensure more consistent product quantity and quality.
Experimental study of $ψ(2S)$ decays to $\K^+ K^- π^+ π^- π^0$ final states
Creators: name: Ablikim, M.
name: Collaboration, BES
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: $K^+K^-π^+π^-π^0$ final states are studied using a sample of $14\times10^6$ $ψ(2S)$ decays collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Position Collider. The branching fractions of $ψ(2S)$ decays to $ K^+K^-π^+π^-π^0$, $ωK^+ K^-$, $ωf_0(1710)$, $ K^{\ast}(892)^0 K^- π^+π^0+c.c.$, $K^{\ast}(892)^{+} K^- π^+π^- +c.c.$, $K^{\ast}(892)^{+} K^- ρ^0+c.c.$ and $K^{\ast}(892)^0 K^-ρ^+ + c.c.$ are determined. The first two agree with previous measurements, and the last five are first measurements.
description: 19 pages, 9 figures
Charm Production in $\bar pA$-Collisions at the Charmonium Threshhold
Creators: name: Gerland, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the production of charmonium states in antiproton-nucleus collisions at the $ψ'$ threshold. It is explained that measurements in $\bar p A$ collisions will allow to get new information about the strengths of the inelastic $J/ψN$ and $ψ'N$ interaction, on the production of $Λ_c$ and $\bar{D}$ in charmonium-nucleon interactions and for the first time about the nondiagonal transitions $ψ' N\to J/ψN$. The inelastic $J/ψ$-nucleon cross section is extracted from the comparison of hadron-nucleus collisions with hadron-nucleon collisions. Predictions for the ratio of $J/ψ$ to $ψ'$ yields in antiproton-nucleus scatterings close to the threshold of $ψ'$ production for different nuclear targets are presented.
description: Talk given at International Conference on Low Energy Antiproton Physics (LEAP'05), Bonn, Juelich, Germany, 16-22 May 2005
AGRICULTURAL POLICY REFORM IN THE WTO: THE ROAD AHEAD
Creators: name: Diao, Xinshen
name: Elbehri, Aziz
name: Gehlhar, Mark J.
name: Gibson, Paul R.
name: Leetmaa, Susan E.
name: Mitchell, Lorraine
name: Nelson, Frederick J.
name: Nimon, R. Wesley
name: Normile, Mary Anne
name: Roe, Terry L.
name: Shapouri, Shahla
name: Skully, David W.
name: Smith, Mark
name: Somwaru, Agapi
name: Trueblood, Michael A.
name: Tsigas, Marinos E.
name: Wainio, John
name: Whitley, Daniel B.
name: Young, C. Edwin
name: Diao, Xinshen
name: Elbehri, Aziz
name: Gehlhar, Mark J.
name: Gibson, Paul R.
name: Leetmaa, Susan E.
name: Mitchell, Lorraine
name: Nelson, Frederick J.
name: Nimon, R. Wesley
name: Normile, Mary Anne
name: Roe, Terry L.
name: Shapouri, Shahla
name: Skully, David W.
name: Smith, Mark
name: Somwaru, Agapi
name: Trueblood, Michael A.
name: Tsigas, Marinos E.
name: Wainio, John
name: Whitley, Daniel B.
name: Young, C. Edwin
Publisher: name: Unknown
Year: 2001
Subjects: Agricultural and Food Policy
International Relations/Trade

description: Agricultural trade barriers and producer subsidies inflict real costs, both on the countries that use these policies and on their trade partners. Trade barriers lower demand for trade partners' products, domestic subsidies can induce an oversupply of agricultural products which depresses world prices, and export subsidies create increased competition for producers in other countries. Eliminating global agricultural policy distortions would result in an annual world welfare gain of $56 billion. High protection for agricultural commodities in the form of tariffs continues to be the major factor restricting world trade. In 2000, World Trade Organization (WTO) members continued global negotiations on agricultural policy reform. To help policymakers and others realize what is at stake in the global agricultural negotiations, this report quantifies the costs of global agricultural distortions and the potential benefits of their full elimination. It also analyzes the effects on U.S. and world agriculture if only partial reform is achieved in liberalizing tariffs, tariff-rate quotas (limits on imported goods), domestic support, and export subsidies.
U.S. Foreign Direct Investment in the Western Hemisphere Processed Food Industry
Creators: name: Bolling, H. Christine
name: Neff, Steven
name: Handy, Charles R.
name: Bolling, H. Christine
name: Neff, Steven
name: Handy, Charles R.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Agribusiness
subject: International Relations/Trade
subject: U.S. food processing industry
subject: Western Hemisphere
subject: foreign trade
subject: foreign direct investment

description: Foreign direct investment (FDI) has become the leading means for U.S. processed food companies to participate in international markets. Affiliates of U.S.-owned food processing companies had $30 billion in sales throughout the Western Hemisphere in 1995, nearly 4 times the level of processed food exports. This report puts U.S. foreign direct investment and trade in processed foods to the region into global perspective, and finds evidence that, in the aggregate for the 1990's, trade and FDI are complementary--not competitive--means of accessing international food markets. Incomes have grown sufficiently in most countries to support growth in affiliate sales and U.S. exports, indicating a strong demand for a wide variety of processed foods.
Profile of Hired Farmworkers, 1996 Annual Averages
Creators: name: Runyan, Jack L.
name: Runyan, Jack L.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Labor and Human Capital
subject: hired farmworkers
subject: annual averages
subject: demographic characteristics
subject: hourse worked
subject: median weekly hours

description: Examines demographic and employment characteristics of the 906,000 persons 15 years of age and older who did hired farmwork in 1996. Approximately 906,000 persons 15 years of age and older were employed as hired farmworkers each week in 1996. An additional 72,000 persons were hired as farmworkers each week as a secondary job. Hired farmworkers were more likely than all U.S. wage and salary workers to be male, Hispanic, younger, less educated, never married, and non-U.S. citizens.
CONSOLIDATION IN U.S. MEATPACKING
Creators: name: MacDonald, James M.
name: Ollinger, Michael
name: Nelson, Kenneth E.
name: Handy, Charles R.
name: MacDonald, James M.
name: Ollinger, Michael
name: Nelson, Kenneth E.
name: Handy, Charles R.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Industrial Organization
subject: Livestock Production/Industries
subject: Concentration
subject: consolidation
subject: meatpacking
subject: scale economies
subject: structural change

description: Meatpacking consolidated rapidly in the last two decades: slaughter plants became much larger, and concentration increased as smaller firms left the industry. We use establishment-based data from the U.S. Census Bureau to describe consolidation and to identify the roles of scale economies and technological change in driving consolidation. Through the 1970's, larger plants paid higher wages, generating a pecuniary scale diseconomy that largely offset the cost advantages that technological scale economies offered large plants. The larger plants' wage premium disappeared in the 1980's, and technological change created larger and more extensive technological scale economies. As a result, large plants realized growing cost advantages over smaller plants, and production shifted to larger plants.
GRID PRICING VERSUS AVERAGE PRICING FOR SLAUGHTER CATTLE: AN EMPIRICAL ANALYSIS
Creators: name: Fausti, Scott W.
name: Qasmi, Bashir A.
name: Fausti, Scott W.
name: Qasmi, Bashir A.
Publisher: name: Unknown
Year: 1999
Subjects: Livestock Production/Industries

description: The paper compares weekly producer revenue under grid pricing and average dressed weight pricing methods for 2560 cattle over a period of 102 weeks. Regression analysis is applied to identify factors affecting the revenue differential.
Traffic Optimization for TCP-based Massive Multiplayer Online Games
Creators: name: Saldana, Jose
name: Sequeira, Luis
name: Fernandez-Navajas, Julian
name: Ruiz-Mas, Jose
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Multimedia (cs.MM)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: This paper studies the use of a traffic optimization technique named TCM (Tunneling, Compressing and Multiplexing) to reduce the bandwidth of MMORPGs (Massively Multiplayer Online Role-Playing Games), which employ TCP to provide a soft real-time service. In order to optimize the traffic and to improve bandwidth efficiency, TCM can be applied when the packets of a number of players share the same link, which occurs in some scenarios, as e.g. the traffic between proxies and servers of game-supporting infrastructures. First, TCP/IP headers are compressed using standard algorithms that avoid sending repeated fields; next, a number of packets are blended into a bigger one and finally, they are sent using a tunnel. The expected compressed header size has been obtained using traffic traces of a real game. Next, simulations using a traffic model of a popular MMORPG have been performed in order to estimate the expected bandwidth savings and the reduction in packets per second. The obtained bandwidth saving is about 60 percent. Packets per second are also significantly reduced. In addition, the added delays are shown to be small enough so as not to impair layers' experienced quality.
Gh. Coquin, Les édifices chrétiens du Vieux-Caire, vol. I
Creators: name: Wessel, Klaus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 62 (1978): Oriens christianus, Band 62
Kinetics of a superconductor excited with a femtosecond optical pulse
Creators: name: Kabanov, V. V.
name: Demsar, J.
name: Mihailovic, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Superconducting state dynamics following excitation of a superconductor with a femtosecond optical pulse is studied in terms of a phenomenological Rothwarf and Taylor model. Analytical solutions for various limiting cases are obtained. The model is found to account for the intensity and temperature dependence of both photoinduced quasiparticle density, as well as pair-breaking and superconducting state recovery dynamics in conventional as well as cuprate superconductors.
description: revised version - accepted for publication in Phys. Rev. Lett
PANEL STRATIFICATION IN META-ANALYSIS OF ENVIRONMENTAL AND NATURAL RESOURCE ECONOMIC STUDIES
Creators: name: Rosenberger, Randall S.
name: Loomis, John B.
name: Shrestha, Ram K.
name: Rosenberger, Randall S.
name: Loomis, John B.
name: Shrestha, Ram K.
Publisher: name: Unknown
Year: 1999
Subjects: Environmental Economics and Policy
Resource /Energy Economics and Policy

description: Meta-analyses of past research outcomes are becoming more popular, however, the issue of the panel nature of data has not been empirically investigated. We test various forms of data stratifications into panels for outdoor recreation economic studies but do not find any significant effects, possibly because of inherent data complexity.
The Galex Ultraviolet Variability (GUVV) Catalog
Creators: name: Welsh, Barry Y.
name: Wheatley, Jonathan M.
name: Heafield, Kenneth
name: Seibert, Mark
name: Browne, Stanley E.
name: Salim, Samir
name: Rich, R. Michael
name: Barlow, Tom A.
name: Bianchi, Luciana
name: Byun, Yong-Ik
name: Donas, Jose
name: Forster, Karl
name: Friedman, Peter G.
name: Heckman, Timothy M.
name: Jelinsky, Patrick N.
name: Lee, Young-Wook
name: Madore, Barry F.
name: Malina, Roger F.
name: Martin, D. Christopher
name: Milliard, Bruno
name: Morrissey, Patrick
name: Neff, Susan G.
name: Schiminovich, David
name: Siegmund, Oswald H. W.
name: Small, Todd
name: Szalay, Alex S.
name: Wyder, Ted K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Version 1.0 of the NASA Galaxy Evolution Explorer (GALEX) ultraviolet variability catalog (GUVV) that contains information on 84 time-variable and transient sources gained with simultaneous near and far ultraviolet photometric observations. These time-variable sources were serendipitously revealed in the various 1.2 degree star fields currently being surveyed by the GALEX satellite in two ultraviolet bands (NUV 1750-2750A, FUV 1350-1750A) with limiting AB magnitudes of 23-25. The largest-amplitude variable objects presently detected by GALEX are M-dwarf flare stars, which can brighten by 5-10 mag in both the NUV and FUV bands during short duration (< 500s) outbursts. Other types of large-amplitude ultraviolet variable objects include ab-type RR Lyrae stars, which can vary periodically by 2-5mag in the GALEX FUV band. This first GUVV catalog lists galactic positions and possible source identifications in order to provide the astronomical community with a list of time-variable objects that can now be repeatedly observed at other wavelengths. We expect the total number of time-variable source detections to increase as the GALEX mission progresses, such that later version numbers of the GUVV catalog will contain substantially more variable sources.
Supplementary Information from Deep learning improves taphonomic resolution: high accuracy in differentiating tooth marks made by lions and jaguars
Creators: name: Jiménez-García, Blanca
name: Aznarte, José
name: Abellán, Natalia
name: Baquedano, Enrique
name: Domínguez-Rodrigo, Manuel
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Taphonomists have long struggled with identifying carnivore agency in bone accumulation and modification. Now that several taphonomic techniques allow identifying carnivore modification of bones, a next step involves determining carnivore type. This is of utmost importance to determine which carnivores were preying on and competing with hominins and what types of interaction existed among them during prehistory. Computer vision techniques using deep architectures of convolutional neural networks (CNN) have enabled significantly higher resolution in the identification of bone surface modifications (BSM) than previous methods. Here, we apply these techniques to test the hypothesis that different carnivores create specific BSM that can enable their identification. To make differentiation more challenging, we selected two types of carnivores (lions and jaguars) that belong to the same mammal family and have similar dental morphology. We hypothesize that if two similar carnivores can be identified by the BSM they imprint on bones, then two more distinctive carnivores (e.g. hyenids and felids) should be more easily distinguished. The CNN method used here shows that tooth scores from both types of felids can be successfully classified with an accuracy greater than 82%. The first hypothesis was successfully tested. The next step will be to differentiate diverse carnivore types involving a wider range of carnivore-made BSM. The present study demonstrates that resolution increases when combining two different disciplines (taphonomy and artificial intelligence computing) in order to test new hypotheses that could not be addressed with traditional taphonomic methods.
title: The Climate Crisis is Here, but Is the U.S. Government Ready? Lessons from LA and Florida
Creators: name: Lin, Yenting
Publisher: name: George Mason University
Year: 2025
Subjects: subject: Emergency Management
subject: Climate change
subject: Climate Policy

description: The escalating climate disasters in the United States, including the 2025 Los Angeles wildfires and the 2024 Florida hurricanes, have revealed significant deficiencies in the nation's ability to prepare for, respond to, and recover from environmental catastrophes. This study investigates whether U.S. climate policies adequately safeguard vulnerable communities or if political inaction, misinformation, and partisanship have left the country exposed to climate threats. This study employs a multi-method approach, including policy analysis, case studies, and international comparisons. It examines federal and state disaster response strategies, evaluates legislative efforts such as the Inflation Reduction Act, and assesses the climate policies of recent presidential administrations, including Obama, Trump, and Biden. Additionally, the research incorporates global climate adaptation strategies, drawing lessons from the Netherlands’ flood resilience system and the United Nations’ Sustainable Development Goals (SDGs). Findings indicate systemic delays in response, inadequate resource distribution, and insufficient investment in proactive climate adaptation. Federal initiatives like FEMA disaster relief and the Inflation Reduction Act provide short-term assistance but lack long-term cohesion. Comparative analysis highlights that while other nations invest heavily in climate-resilient infrastructure, the U.S. remains fragmented in its approach. This article argues that the U.S. remains reactive rather than proactive in addressing climate change-induced crises. Without urgent and systemic reforms, the U.S. will continue to face escalating economic, environmental, and human costs from climate disasters, leaving millions unprotected and exacerbating socio-economic inequalities.
The targum (1953:Apr. 10 - 1953:Apr. 24)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1953

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Testing Brans-Dicke Gravity with Screening by Scalar Gravitational Wave Memory
Creators: name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Brans-Dicke theory of gravity is one of the oldest ideas to extend general relativity by introducing a non-minimal coupling between the scalar field and gravity. The Solar System tests put tight constraints on the theory. In order to evade these constraints, various screening mechanisms have been proposed. These screening mechanisms allow the scalar field to couple to matter as strongly as gravity in low density environments while suppressing it in the Solar System. The Vainshtein mechanism, which is found in various modified gravity models such as massive gravity, braneworld models and scalar tensor theories, suppresses the scalar field efficiently in the vicinity of a massive object. This makes it difficult to test these theories from gravitational wave observations. We point out that the recently found scalar gravitational wave memory effect, which is caused by a permanent change in spacetime geometry due to the collapse of a star to a back hole can be significantly enhanced in the Brans-Dicke theory of gravity with the Vainshtein mechanism. This provides a possibility to detect scalar gravitational waves by a network of three or more gravitational wave detectors.
description: 6 pages, 5 figures, accepted for publication in PRD
Supplementary data: Intratracheal Budesonide/Surfactant attenuates the development of BPD in preterm rabbits
Creators: name: Gie, Andre
name: Regin, Yannick
name: Salaets, Thomas
name: Toelen, Jaan
name: Deprest, Jan
name: Casiraghi, Costanza
name: Salomone, Fabrizio
Publisher: name: figshare
Year: 2020
Subjects: subject: 200323 Translation and Interpretation Studies
subject: FOS: Languages and literature

description: Supplementary table 2: Intratracheal Budesonide/Surfactant attenuates the development of BPD in preterm rabbits; Data are presented as mean ± SD , statistical analysis one-way ANOVA with correction for multiple comparison (Dunnett) n.s=non-significant
Ochterus polhemusi Gapud 1981
Creators: name: Kment, Petr
name: Carapezza, Attilio
name: Jindra, Zdeněk
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Ochteridae
Ochterus
Ochterus polhemusi

description: Ochterus polhemusi Gapud, 1981
 Ochterus brunneus Gapud & San Valentin, 1977: 272, 276 –278, 281, 285–286, 288, 296–298 (key to species, description, illustrations). HOLOTYPE:, Philippines: Luzon: ʻMolawin Creek, Mt. Makiling, Laguna’ (UPLB). Junior homonym of Ochterus brunneus Hungerford, 1927.
 Ochterus brunneus: GAPUD (1986): 32, 34–36 (key to species, redescription, illustration).
 Ochterus polhemusi Gapud, 1981: 300 –301 (nomenclature). New substitute name for Ochterus brunneus Gapud & San Valentin, 1977.
 Ochterus polhemusi: GAPUD (2003): 107 (checklist); CHEN et al. (2005): 413 (checklist).
  Distribution. Oriental Region:  Philippines: Cebu (GAPUD 2003), Laguna (GAPUD & SAN VALENTIN 1977, GAPUD 1981), Leyte (GAPUD 1981), Mindanao (GAPUD 1981), Mindoro (GAPUD & SAN VALENTIN 1977), Negros (GAPUD 2003).
description: Published as part of Kment, Petr, Carapezza, Attilio & Jindra, Zdeněk, 2020, Taxonomic catalogue of the family Ochteridae with description of Ochterus papaceki sp. nov. from Socotra Island and Tanzania (Hemiptera: Heteroptera), pp. 23-64 in Acta Entomologica Musei Nationalis Pragae 60 (1) on page 46, DOI: 10.37520/aemnp.2020.003, http://zenodo.org/record/3879659
Low Energy Antiproton Experiments -- A Review
Creators: name: Jungmann, Klaus P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Low energy antiprotons offer excellent opportunities to study properties of fundamental forces and symmetries in nature. Experiments with them can contribute substantially to deepen our fundamental knowledge in atomic, nuclear and particle physics. Searches for new interactions can be carried out by studying discrete symmetries. Known interactions can be tested precisely and fundamental constants can be extracted from accurate measurements on free antiprotons ($\bar{p}$'s) and bound two- and three-body systems such as antihydrogen ($\bar{\rm H}=\bar{p}e^-$), the antprotonic helium ion (He$^{++} \bar{p}$)$^+$ and the antiprotonic atomcule (He$^{++} \bar{p}e^-$) . The trapping of a single $\bar{p}$ in a Penning trap, the formation and precise studies of antiprotonic helium ions and atoms and recently the production of $\bar{\rm H}$ have been among the pioneering experiments. They have led already to precise values for $\bar{p}$ parameters, accurate tests of bound two- and three-body Quantum Electrodynamics (QED), tests of the CPT theorem and a better understanding of atom formation from their constituents. Future experiments promise more precise tests of the standard theory and have a robust potential to discover new physics.
description: invited talk, Workshop on Physics with Ultraslow Antiproton Beams, Riken Wako, Japan, 14-16 March 2005
The Burgers equations and the Born rule
Creators: name: Prodanov, Dimiter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Q40, 35Q41

description: The present work demonstrates the connections between the Burgers, diffusion, and Schroedinger's equations. The starting point is a formulation of the stochastic mechanics, which is modeled along the lines of the scale relativity theory. The resulting statistical description obeys the Fokker-Planck equation. This paper further demonstrates the connection between the two approaches, embodied by the study of the Burgers equation, which from this perspective appears as a stochastic geodesic equation. The main result of the article is the transparent derivation of the Born rule from the starting point of a complex stochastic process, based on a complex Fokker-Planck formalism.
description: 21 pages
PT-supersymmetric partner of a short-range square well
Creators: name: Quesne, C.
name: Bagchi, B.
name: Mallik, S.
name: Bila, H.
name: Jakubsky, V.
name: Znojil, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In a box of size $L$, a spatially antisymmetric square-well potential of a purely imaginary strength ${\rm i}g$ and size $l < L$ is interpreted as an initial element of the SUSY hierarchy of solvable Hamiltonians, the energies of which are all real for $g < g_c(l)$. The first partner potential is constructed in closed form and discussed.
description: 8 pages, no figure, presented at PHHQP3, Istanbul, June 20-22, 2005, to be published in Czech. J. Phys
THE CONTRIBUTION OF ENVIRONMENTAL AMENITIES TO AGRICULTURAL LAND VALUES: HEDONIC MODELLING USING GEOGRAPHIC INFORMATION SYSTEMS DATA
Creators: name: McLeod, Donald M.
name: Bastian, Christopher T.
name: Germino, Matthew J.
name: Reiners, William A.
name: Blasko, Benedict J.
name: McLeod, Donald M.
name: Bastian, Christopher T.
name: Germino, Matthew J.
name: Reiners, William A.
name: Blasko, Benedict J.
Publisher: name: Unknown
Year: 1999
Subjects: Environmental Economics and Policy
Land Economics/Use

description: Geographic Information Systems (GIS) data are used in a hedonic model to measure the impact of recreational and scenic amenities on agricultural land values. Results indicate agricultural land values are determined by environmental amenities as well as production attributes. Significant amenity variables included scenic view, elk habitat and fishery productivity.
Supplementary table 1: Intratracheal Budesonide/Surfactant attenuates the development of BPD in preterm rabbits; Primers used for quantitative PCR.
Creators: name: Gie, Andre
name: Regin, Yannick
name: Toelen, Jaan
name: Deprest, Jan
name: Salaets, Thomas
name: Casiraghi, Costanza
name: Salomone, Fabrizio
Publisher: name: figshare
Year: 2020
Subjects: subject: 200323 Translation and Interpretation Studies
subject: FOS: Languages and literature

description: Supplementary table 1: Intratracheal Budesonide/Surfactant attenuates the development of BPD in preterm rabbits; Primers used for quantitative PCR.
Plasmon channels in the electronic relaxation of diamond under high-order harmonics femtosecond irradiation
Creators: name: Belsky, Andrei
name: Esnouf, Stéphane
name: Garnov, Serguei V.
name: Gaudin, Jérôme
name: Geoffroy, Ghita
name: Guizard, Stéphane
name: Klimentov, Serguei M.
name: Martin, Patrick
name: Olevano, Valerio
name: Petite, Guillaume
name: Pivovarov, Pavel A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We used high order harmonics of a femtosecond titanium-doped sapphire system (pulse duration 25 fs) to realise Ultraviolet Photoelectron Spectroscopy (UPS) measurements on diamond. The UPS spectra were measured for harmonics in the range 13 to 27. We also made ab initio calculations of the electronic lifetime of conduction electrons in the energy range produced in the UPS experiment. Such calculations show that the lifetime suddenly diminishes when the conduction electron energy reaches the plasmon energy, whereas the UPS spectra show evidence in this range of a strong relaxation mechanism with an increased production of low energy secondary electrons. We propose that in this case the electronic relaxation proceeds in two steps : excitation of a plasmon by the high energy electron, the latter decaying into individual electron-hole pairs, as in the case of metals. This process is observed for the first time in an insulator and, on account of its high efficiency, should be introduced in the models of laser breakdown under high intensity.
Exploring ESL immigrant students' perceptions of their academic and social integration success
Creators: name: Chen, Louis S. C.
Publisher: name: University of British Columbia
Year: 2009

description: This study introduces a different kind of collaborative research whereby two researchers co-design and co-conduct the research and draw their own conclusions from the shared data. The data, gathered using qualitative tools such as surveys, questionnaires, and interviews, was further enriched as a result of having two individuals from different backgrounds interpreting the data. The data collected from 14 university students who were once identified as ESL students in British Columbia, Canada, were transcribed then analyzed using NUD*IST qualitative computer software. The focus was on their perceptions of ESL programs, immigration process, and socio-cultural factors that contributed to their academic and social integration success. Participants' own words centered mostly on their relationships with families, friends, and ESL teachers as major factors contributing to their success. ESL programs served as their safety nets as the majority suggested that their journey into social and academic mainstreams had undesirable effects on their experiences. Three major factors were identified as having both helped and hindered their adaptation and integration into Canadian school and society: family influence, bicultural identities, and segregation. Results from this study suggest a number of theoretical and practical implications. First, this study need to be replicated in different contexts using a longitudinal approach to document how immigrant ESL students construct their experiences within and outside of school overtime. Secondly, research need to aim at understanding the tension between students' home and school cultures and encourage involvement and collaboration between ESL students, parents, and teachers. In addition, examining how ESL students interact with their mainstream counterparts may provide helpful guidelines for schools to foster an environment whereby unity and support exist between the two groups. This study concludes with both researchers' reflection on each other's thesis. This step led to a critical reexamination of their interpretation. Differences and similarities emerged from this process. The similarities both researchers shared provided a greater degree of validity and reliability to this project. On the other hand, the differences that emerged served to enrich the data by providing two perspectives to the same problem.
Catalogo de praticas Tinkercad e Interação com Desenhos em Plano 2D: Paineis eletronicos interativos
Creators: name: Cavalcante, Marisa
name: Molisani, Elio
name: Freitas, João
name: Sacay, Marcia
Publisher: name: Zenodo
Year: 2021
Subjects: Computação Física
Aulas remotas
obras hídridas
Ensino e aprendizagem de eletrônica
Eletronica criativa

description: Trata-se de um catalogo de praticas e projetos desenvolvidos pelos professores participantes em duas turmas em curso de extensão na modalidade remota, COMPUTAÇÃO FÍSICA PARA O DESENVOLVIMENTO DE PROJETOS INTERDISCIPLINARES NO LED, realizado na Secretaria Municipal de Educação de São Paulo no ano de 2020. Trata-se da criação de narrativas utilizando paineis eletronicos digitais que propiam interações do observador com o simulador tinkercad na configuraçao de um prototipo de um produto que pode ser desenvolvido fisicamente em espaços de criatividade, como os laboratórios LED da secretaria de educação municipal de São Paulo.
A molecular phylogeny of the long-horned bees in the genus Melissodes Latreille (Hymenoptera: Apidae: Eucerinae)
Creators: name: Wright, Karen W.
name: Miller, Kelly B.
name: Hojun Song
Publisher: name: Brill Online
Year: 2020
Subjects: subject: 60399 Evolutionary Biology not elsewhere classified
subject: FOS: Biological sciences

description: The genus Melissodes Latreille in the subfamily Eucerinae (Hymenoptera: Apidae) is a widespread and common group of bees. There are 129 described Melissodes species that range throughout the western hemisphere with the center of diversity in the warm deserts of southwestern North America. Despite its widespread nature and importance in agriculture, the evolutionary relationships among the species have never been investigated. Here, we present a molecular phylogeny using five loci for 89 species of Melissodes with representatives from all subgenera. We confirm all of the subgeneric delineations constructed by LaBerge, except for a paraphyletic M. (Tachymelissodes) and the placement of M. (Heliomelissodes), which renders M. (Eumelissodes) paraphyletic. We also discuss the unexpected placement of M. tristis Cockerell, M. paucipuncta LaBerge, M. dagosus Cockerell, and M. pexa LaBerge. Finally, we combine this analysis with previous data to support the placement of Melissodes within the subfamily Eucerinae.
Simulating isothermal aging of snow
Creators: name: Vetter, Roman
name: Sigg, Stephan
name: Singer, Herman M.
name: Kadau, Dirk
name: Herrmann, Hans J.
name: Schneebeli, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A Monte Carlo algorithm to simulate the isothermal recrystallization process of snow is presented. The snow metamorphism is approximated by two mass redistribution processes, surface diffusion and sublimation-deposition. The algorithm is justified and its parametrization is determined. The simulation results are compared to experimental data, in particular, the temporal evolution of the specific surface area and the ice thickness. We find that the two effects of surface diffusion and sublimation-deposition can accurately model many aspects of the isothermal metamorphism of snow. Furthermore, it is shown that sublimation-deposition is the dominant contribution for temperatures close to the melting point, whereas surface diffusion dominates at temperatures far below the melting point. A simple approximation of gravitational compaction is implemented to simulate density change.
description: 6 pages, 5 figures, 2 tables
Preparation of Long-Lived, Non-Autoionizing Circular Rydberg States of Strontium
Creators: name: Teixeira, R. C.
name: Larrouy, A.
name: Muni, A.
name: Lachaud, L.
name: Raimond, J. -M.
name: Gleyzes, S.
name: 1
name: Brune, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Alkaline earth Rydberg atoms are very promising tools for quantum technologies. Their highly excited outer electron provides them with the remarkable properties of Rydberg atoms and, notably, with a huge coupling to external fields or to other Rydberg atoms while the ionic core retains an optically active electron. However, low angular-momentum Rydberg states suffer almost immediate autoionization when the core is excited. Here, we demonstrate that strontium circular Rydberg atoms with a core excited in a $4D$ metastable level are impervious to autoionization over more than a few millisecond time scale. This makes it possible to trap and laser-cool Rydberg atoms. Moreover, we observe singlet to triplet transitions due to the core optical manipulations, opening the way to a quantum microwave to optical interface.
Confirming new white dwarf-ultracool dwarf binary candidates
Creators: name: Hogg, Miriam
name: Casewell, Sarah
name: Wynn, Graham
name: Longstaff, Emma
name: Braker, Ian
name: Burleigh, Matthew
name: Tilbrook, Rosanna
name: Geier, Stephan
name: Koester, Detlev
name: Debes, John
name: Lodieu, Nicolas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of a study to discover prospective new white dwarf-L dwarf binaries as identified by their near-infrared excesses in the UKIDSS catalogue. We obtained optical spectra to validate the white dwarf nature for 22 of the candidate primary stars, confirming ten as white dwarfs and determining their effective temperatures and gravities. For all ten white dwarfs we determined that the near-infrared excess was indeed indicative of a cool companion. Six of these are suggestive of late M dwarf companions, and three are candidate L dwarf companions, with one straddling the M$-$L boundary. We also present near-infrared spectra of eight additional candidate white dwarf-ultracool dwarf binaries where the white dwarf primary had been previously confirmed. These spectra indicate one candidate at the M$-$L boundary, three potential L dwarf companions, and one suspected M dwarf, which showed photometric variability on a $\sim$6 hour period, suggesting the system may be close. Radial velocity follow up is required to confirm whether these systems are close, or widely separated.
description: Accepted to MNRAS
Conifold dynamics and axion monodromies
Creators: name: Scalisi, Marco
name: Soler, Pablo
name: Van Hemelryck, Vincent
name: Van Riet, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has recently been appreciated that the conifold modulus plays an important role in string-phenomenological set-ups involving warped throats, both by imposing constraints on model building and for obtaining a 10-dimensional picture of SUSY-breaking. In this note, we point out that the stability of the conifold modulus furthermore prevents large super- Planckian axion monodromy field ranges caused by brane-flux decay processes down warped throats. Our findings imply a significant challenge for concrete string theory embeddings of the inflationary flux-unwinding scenario.
description: 24 pages, 5 figures
Silicon quantum dot devices with a self-aligned second gate layer
Creators: name: Geyer, Simon
name: Camenzind, Leon C.
name: Czornomaz, Lukas
name: Deshpande, Veeresh
name: Fuhrer, Andreas
name: Warburton, Richard J.
name: Zumbühl, Dominik M.
name: Kuhlmann, Andreas V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We implement silicon quantum dot devices with two layers of gate electrodes using a self-alignment technique, which allows for ultra-small gate lengths and intrinsically perfect layer-to-layer alignment. In a double quantum dot system, we investigate hole transport and observe current rectification due to Pauli spin blockade. Magnetic field measurements indicate that hole spin relaxation is dominated by spin-orbit interaction, and enable us to determine the effective hole $g$-factor $\simeq1.6$. From an avoided singlet-triplet crossing, occurring at high magnetic field, the spin-orbit coupling strength $\simeq0.27$meV is obtained, promising fast and all-electrical spin control.
Deep learning-based methods in the era of rough volatility
Creators: name: Žurič, Žan
Publisher: name: Imperial College London
Year: 2023

description: This thesis explores the confluence of financial mathematical models and advanced machine-learning techniques, specifically focusing on pricing, hedging and volatility modelling. By transcending the limitations of traditional models, it leverages cutting-edge advancements in deep learning to handle complex financial calculations, providing valuable insights in these areas. One significant contribution is the development of neural stochastic differential equations, a novel approach that enhances pricing and hedging by capturing realistic market behaviour while providing reliable bounds. Notably, the approach offers flexible calibration under risk-neutral and real-world measures, enabling more accurate simulations of diverse market scenarios. Next, to tackle the challenges posed by path-dependent partial differential equations arising from rough volatility models, this thesis introduces a numerical algorithm utilizing reservoir-type neural networks. The algorithm merges theoretical convergence properties with practical regression-based solutions, effectively overcoming some of the limitations of traditional numerical methods. Furthermore, this study delves into variance reduction in stochastic volatility models, with a particular focus on the Heston model. It presents a comprehensive analysis of importance sampling, based on large and moderate deviation principles. The variance reduction of the resulting Monte Carlo estimators is demonstrated through theoretical guarantees and empirical studies. Lastly, the thesis aims to address a significant gap in a rough volatility model used in equity markets, namely the Rough Bergomi model. It proposes a generalized model that departs from the log-normality constraint, incorporating self-similarity and stationary increments. Through this refinement, it seeks to provide a more accurate reflection of VIX market data. In summary, we hope this research casts a new light on the symbiosis between financial mathematics and modern data science techniques. Its goal is to propel a paradigm shift in our understanding of modelling financial markets, magnifying the transformative potential of deep learning techniques on traditional mathematical models currently used in the financial industry.
G. T. Dennis, The Letters of Manuel II Palaeologus
Creators: name: Tinnefeld, Franz Hermann
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 62 (1978): Oriens christianus, Band 62
Exponential corrections to black hole entropy
Creators: name: Chatterjee, Ayan
name: Ghosh, Amit
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using the quasilocal properties alone we show that the area spectrum of a black hole horizon must be discrete, independent of any specific quantum theory of gravity. The area spectrum is found to be half-integer spaced with values $8πγ\ell_{p}^{2}j$ where $j\in \mathbb{N}/2$. We argue that if microstate counting is carried out for quantum states residing on the horizon only, correction of $\exp(-\mathcal{A}/4\ell_{p}^{2})$ over the Bekenstein-Hawking area law must arise in black hole entropy.
description: 6 pages, published in Phys. Rev. Lett
Chinese parents and ESL teachers : understanding and negotiating their differences
Creators: name: Guo, Yan
Publisher: name: University of British Columbia
Year: 2009

description: Research indicates that the limited communication between English as a Second Language (ESL) teachers and parents is a serious problem confronting educators. However, no serious study has been done to date on ESL parent-teacher communication that adequately recognizes the problematic nature of such communication and that approaches the discourse data from a functional linguistic perspective. This study investigates the communication processes between ESL teachers and Chinese immigrant parents (chiefly from Taiwan, Hong Kong, and Mainland China) through a focal communication event, ESL Parents' Night, when they discuss their views of an ESL program in particular and the education of immigrant adolescent students in general. The study falls within the theoretical perspectives of learning organization, negotiation of intercultural conflict in a multilingual situation, language socialization, and sociocultural views of activity. Data were collected by multiple methods: 1) observations of twelve ESL department planning meetings and three annual Parents' Nights, 2) individual interviews of teachers and bilingual assistants who acted as intermediaries between teachers and parents, and 3) a focus group discussion. Specifically, the methodology combines qualitative research approaches and discourse analysis. Results indicate that teachers viewed the ESL program positively whereas many parents perceived it negatively. Teachers and parents were deeply divided both by what and how they were discussing at Parents' Night. This 'double difference' creates a major difficulty for intercultural negotiation of conflict, and preconditions aiding dialogue and negotiation become vitally important. Noting variation in interaction in different parts of Parents' Night, the study discusses various conditions that may have promoted or hindered the intercultural negotiation of these conflicts. The researcher's analysis of the difficulties of communication between Chinese parents and Canadian teachers at Parents' Night demonstrates less a solution to intercultural conflict than a need for continuous negotiation between the two cultural groups. Implications of this research include the need to expand the boundaries of language socialization theory to give a greater role to reflective processes, and learning organization theory to include multilingual and multicultural issues. It also provides practical suggestions for improving intercultural communication between parents and teachers in the interest of adolescent ESL learners frequently caught between conflicting sets of attitudes and expectations.