cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Symmetry of the Relativistic Two-Body Bound State
Creators: name: Horwitz, L. P.
name: Arshansky, R. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that in a relativistically covariant formulation of the two-body bound state problem, the bound state spectrum is in agreement, up to relativistic corrections, with the non-relativistic bound state spectrum. The solution is achieved by solving the problem with support of the wave function in an O(2,1) invariant submanifold of the Minkowski spacetime. The O(3,1) invariance of the differential equation requires, however, that the solutions provide a representation of O(3,1). Such solutions are obtained by means of the method of induced representations, providing a basic insight into the subject of the symmetries of relativistic dynamics.
description: 21 pages, no figures. Based on earlier work of refs. 18,19
title: Amendment 6 to the Fishery Management Plan for West Coast Highly Migratory Species Fisheries: Authorization of Deep-set Buoy Gear: Final Environmental Impact Statement
Creators: name: NOAA National Marine Fisheries Service West Coast Region
Publisher: name: NOAA National Marine Fisheries Service West Coast Region
Year: 2023

description: The Proposed Action is to identify deep-set buoy gear (DSBG) as a legal commercial fishing gear under the Fishery Management Plan for West Coast Highly Migratory Species Fisheries and pursuant regulations. This would allow fishermen to obtain federal permits to fish for swordfish using DSBG in Federal waters offshore of California and Oregon. To the extent that DSBG is economically viable, the Proposed Action would assist in supporting a fleet of vessels with West Coast home ports that could increase the availability of locally-caught swordfish in the market. This Proposed Action is intended to support a healthy domestic fishery with economic benefits for fishing communities, processors, restaurants, and consumers. In addition to a no-action alternative, two action alternatives are considered, both of which are expected to have minimal impacts on non-target fish species and protected species in the Proposed Action Area. This Environmental Impact Statement (EIS) is being prepared using the 1978 version of the Council on Environmental Quality (CEQ) regulations implementing the National Environmental Policy Act (NEPA). Although CEQ promulgated new NEPA regulations in 2020, NEPA reviews initiated prior to the effective date of the 2020 regulations may be conducted using the 1978 version of the regulations. The effective date of the 2020 CEQ NEPA regulations was September 14, 2020. This review began on March 4, 2019, and the agency has decided to proceed under the 1978 regulations.
Analysis of stem and progenitor cell responses to variations in bioprocess culture variables
Creators: name: Chaudhry, Muhammad Arshad S.
Publisher: name: University of British Columbia
Year: 2010

description: The realization of many potential cell therapies will depend on the development of culture protocols that consistently expand stem and progenitor cell numbers while retaining their developmental properties. Hematopoietic cell lines were used to develop predictive mathematical models of cytokine-dependent proliferation. First, Hill-type empirical models provided a quantitative understanding of how cytokines (IL-3 and GM-CSF) individually influenced the growth rate. Then a competitive model of cytokine interactions was developed that effectively predicted the growth rates for TF-1 and MO7e cells exposed to combinations of IL-3 and GM-CSF, over wide concentration ranges. Mouse embryonic stem cells (mESC) were used to study the influence of various culture variables on their proliferation and embryoid body (EB) formation potential. The medium pH, osmolality, basal medium composition, as well as serum and serum replacement (SR) concentrations were found to modulate mESC responses. For most of these variables, conventional cultivation methods did not expose the cells to levels that significantly decreased culture output. However, for feeder-containing cultures, the osmolality increased to over 400 mOsm/kg and, when ESC were cultured in such a medium, the EB yield was decreased by more than 50% compared to media at 300 and 335 mOsm/kg. Likewise, pH dose response experiments revealed that, within 48 h, compared to a medium initially at pH 7.3, the EB yield decreased by approximately 50% when R1 cells were cultured at either pH 7.15 or 7.45, with even lower yields at more extreme pH conditions. The mESC responses were also found to be serum concentration-dependent with maximal results at 5% serum in DMEM compared to the commonly used 15%. In DMEM:F12, a reduced dependency on serum was observed. When SR was used, both the proliferation and EB formation potential were maximal with 5% SR in DMEM. In DMEM:F12, 1.7% SR was sufficient to maintain the EB yield of mESC lines with a similar growth rate. Taken together, these results demonstrate that multiple critical culture variables can profoundly influence the responses of mESC and that these variables need to be kept within defined ranges to maintain the mESC in culture without compromising their developmental potential.
Factors influencing the willingness to pay a user fee for a state forest recreation visitor facility
Creators: name: Sambury, Carlton
name: Hutchinson, Sharon
name: Avril, Dean H.
name: Sambury, Carlton
name: Hutchinson, Sharon
name: Avril, Dean H.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Land Economics/Use
subject: Productivity Analysis
subject: User fees
subject: visitor shelters
subject: willingness to pay
subject: Trinidad and Tobago State forests
subject: logistic regression

description: Managers of the Public forest recreation areas face a daunting challenge to provide a high quality recreation experience, while maintaining sustained forest and related resource management, and simultaneously, steadily increasing visitor numbers, with resultant environmental damage. It is the hypothesis of this study, that visitors are willing to pay to use the Quinam forest recreation visitor shelter - a Trinidad and Tobago government forestry facility, equipped with most visitor services (cooking, wash, play areas) and which is currently provided free of charge on approval of the requisite application. A telephone survey was used to collect both quantitative and qualitative data during the period of April 24th – May 6th 2011 and a logistic regression model examined the socioeconomic factors explaining support for fees. This paper – a pre test for a larger MPhil study, assesses factors influencing visitors’ willingness to pay for the reservation of the shelter. Data collected indicated that participants are willing to pay (WTP) a price as high as $200 to use the facility. A total of 76% indicated willingness to pay to use the shelter while 23.9% were not willing to pay. Findings also showed that motivation and gender were key variables. However, many cells with no data and an overall unsatisfactory response for income data suggest the need for closer scrutiny of the questionnaire formulation and survey process. Nevertheless, even with the limitations of the data collected, these results potentially indicate that a fee could be implemented without losing visitors. This study will provide the basis and impetus for more research leading to the introduction of a user fee at this site and others in Trinidad and Tobago.
Supplementary Results for ‘Constraints on tectonic information from the main drainage divide of a mountain belt’
Creators: name: Chuanqi He
name: Ci-Jian Yang
name: Turowski, Jens M.
name: Rao, Gang
name: Duna C. Roda-Boluda
name: Yuan, Xiao-Ping
Publisher: name: figshare
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 40402 Geodynamics
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: 40312 Structural Geology
subject: 40607 Surface Processes
subject: 40313 Tectonics

description: The source data underlying Figs. 1g, 7b, S1, S2, S4, S5, S7, S9, and some topographic data for Southern Taiwan (hillslope length, channel steepness) are provided as a Source Data file. The Source Data file, topographies of all the numerical models at 300 Myr, Supplementary Movie S1, and a Matlab script that can generate a divide location for different geological settings were deposited in figshare. Other relevant data supporting the findings of the study are available in the Supplementary Information, or from the corresponding author upon request.
Электропроводящая магнитная жидкость для электронной промышленности
Creators: name: Шкиндеров, Максим
Publisher: name: ООО Цифра
Year: 2025
Subjects: electrically conductive magnetic fluid
carbonyl iron
hysteresis
structure formation
magnetically sensitive electronic elements
электропроводящая магнитная жидкость
карбонильное железо
гистерезис
структурообразование
магниточувствительные электронные элементы

description: Международный научно-исследовательский журнал, Выпуск 4 (154) 2025
Additional file 4 of Implementation of a strategy to facilitate effective medical follow-up for Australian First Nations children hospitalised with lower respiratory tract infections: study protocol
Creators: name: Schultz, André
name: Chang, Anne B.
name: Gill, Fenella
name: Walker, Roz
name: Barwick, Melanie
name: Munns, Sarah
name: Cooper, Matthew N.
name: Norman, Richard
name: Laird, Pamela
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 4. Semi-structured interview guide for healthcare provider.
Food Safety and Security Program PTC
Creators: name: Schet, Melanie
name: Schet, Melanie
Publisher: name: Unknown
Year: 2011
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: higher education
subject: associate degree
subject: Polytechnics College
subject: Suriname
subject: food security

description: Foundation Polytechnic College Suriname (PTC), which opened its doors in 1997, is a leading institution for higher education in technical studies, offering a range of studies at associate degree to bachelor degree level. The course International Agribusiness is a very important link in the development in food production and education. PTC currently has three pillars, namely: 1. Knowledge Unit Associate Degree – Bachelor’s Degree 2. The Knowledge Center 3. The Knowledge Circle The knowledge consists of the following courses: • Electrical Engineering • Infrastructure • Mechanical Engineering • International Agribusiness • Information and Communication Technology • Higher Lab Education Suriname has a great potential to contribute to food security in the region with the emphasis on food safety. Therefore, PTC wants to make a contribution, so that the country will be able to comply with the rules and requirements relating to food safety in agricultural production. PTC offers higher professional education and so contributes to the Surinamese economy by training people for senior management positions. Our trainings are highly valued by different companies and stakeholders. PTC has the intention to establish a center for food security and safety. The knowledge center will focus on trainings at the vocational level with the possibility that students can go on to the bachelor program. An Associate Degree curriculum in food safety is developed in the following disciplines. • Provide an associate degree program in public and environmental health to inspectors employed by the Ministry of Health. The program is linked to the following areas: • Water quality monitoring • Sanitary handling and disposal of sewage and other liquid waste • Management of solid waste • Food hygiene • Vector control • Port health With the bachelor course ‘Higher Laboratory Education” PTC also wants to make a significant contribution to food safety. To cover food security, PTC offers a bachelor degree course in International Agribusiness. The focus is on horticulture, greenhouse systems and entrepreneurship. In order to attract more students this course has been expanded by a one-year pre-bachelor training course. Besides agricultural related excursions, the program consists of A-level mathematics, chemistry, biology, and physics.
Supplementary Results for ‘Constraining tectonic information from the main drainage divide of a mountain belt’
Creators: name: Chuanqi He
name: Ci-Jian Yang
name: Turowski, Jens M.
name: Rao, Gang
name: Duna C. Roda-Boluda
name: Yuan, Xiao-Ping
Publisher: name: figshare
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 40402 Geodynamics
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: 40312 Structural Geology
subject: 40607 Surface Processes
subject: 40313 Tectonics

description: The source data underlying Figs. 1g, 7b, S1, S2, S4, S5, S7, S9, and some topographic data for Southern Taiwan (hillslope length, channel steepness) are provided as a Source Data file. The Source Data file, topographies of all the numerical models at 300 Myr, Supplementary Movie S1, and a Matlab script that can generate a divide location for different geological settings were deposited in figshare. Other relevant data supporting the findings of the study are available in the Supplementary Information, or from the corresponding author upon request.
Possible strain induced Mott gap collapse in 1T-TaS$_2$
Creators: name: Bu, Kunliang
name: Zhang, Wenhao
name: Fei, Ying
name: Wu, Zongxiu
name: Zheng, Yuan
name: Gao, Jingjing
name: Luo, Xuan
name: Sun, Yu-Ping
name: Yin, Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Tuning the electronic properties of a matter is of fundamental interest in scientific research as well as in applications. Recently, the Mott insulator-metal transition has been reported in a pristine layered transition metal dichalcogenides 1T-TaS$_2$, with the transition triggered by an optical excitation, a gate controlled intercalation, or a voltage pulse. However, the sudden insulator-metal transition hinders an exploration of how the transition evolves. Here, we report the strain as a possible new tuning parameter to induce Mott gap collapse in 1T-TaS$_2$. In a strain-rich area, we find a mosaic state with distinct electronic density of states within different domains. In a corrugated surface, we further observe and analyze a smooth evolution from a Mott gap state to a metallic state. Our results shed new lights on the understanding of the insulator-metal transition and promote a controllable strain engineering on the design of switching devices in the future.
description: 16 pages, 4 figures
title: Glucose transport and inhibition in five human organ barriers
Creators: name: Pajenda, Jasmin
Publisher: name: TU Wien
Year: 2018
Subjects: subject: glucose transporter
subject: cell barrier

description: The current work handles the comparative characterisation of five distinct organ barriers in regard to transport and inhibition of glucose. The organs of the lung, placenta, liver and intestines were represented by cancer cell lines in in-vitro barriers models. As the transport of glucose is controlled by various active and passive glucose transporters, different inhibitors of the passive facilitate glucose transporter (GLUT) family and/or the active sodium-glucose linked transporter (SGLT) family were tested. Prior, the barrier integrity was assessed with the transepithelial/endothelial resistance and sodium fluorescein leakage assays. Cytochalasin B (CB) reduced sugar transport by 52% in the placental BeWo b30 and by 42% in the hepatic Hep G2 barrier due to inhibition of the highly expressed passive transporters GLUT1 and GLUT3. A moderate inhibition of 34% of GLUT1, 3 4 and 12 in the lung A549 barrier with CB was identified. The intestinal barriers Caco-2 and HT-29 showed an overall low inhibition of 19% with CB as GLUT2 and SGLT1 transporters were not inhibited and presumably responsible for the majority of glucose transport apart from GLUT1. In contrast, phloretin (PT) binds to the receptors of GLUT2 and SGLT1 and achieved a reduction of up to 45% in the intestinal cancer barriers. However, due to its lower inhibitory strength in GLUT1 and GLUT4, overall lower inhibition rates of 20% in lung, 38% in placental and 36% in hepatic barriers were accomplished. The results suggest that in placental and hepatic barriers the glucose transfer is mainly contributed to GLUT1 and GLUT3, and the glucose transport in intestinal barriers to GLUT2 and SGLT1.
Pagos agroambientales y productores agrarios: un analisis Delphi de las percepciones y demandas de los ganaderos beneficiarios de los programas de ayudas
Creators: name: Dominquez-Torreiro, Marcos
name: Gomez-Rodriguez, Fatima
name: Dominquez-Torreiro, Marcos
name: Gomez-Rodriguez, Fatima
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Public Economics
subject: Metodo Delphi
subject: contratos agroambientales
subject: valoracion contingente
subject: preferencias de productores
subject: Delphi method
subject: agri-environment schemes
subject: contingent valuation
subject: farmers' preferences

description: Resumen : En este trabajo se ha analizado la situacion actual y las persepctivas futuras de diferentes lineas de ayudas agroambientales incluidas dentro dentro del "segundo pilar" de la Politica Agraria Comun. Por medio de las ayudas agroambientales se persingue influir de manera significativa sobre la conservacion del patrimonio natural y paisajistico de las zonas rurales de la Union Europea. La conservacion de dichos habitats y paisajes precisa de la presencia y actividad humana en las zonas rurales, y muy especialmente de la continuidad de una actividad ganadera extensiva que aproveche los recursos forrajeros (praderas de propiedad privada y pastos comunales) disponibles. para la elaboracion de este estudio se han utilizado datos procedentes de encuestas personales realizadas a ganaderos beneficiarios de las lineas de ayudas agroambientales mas relevantes para Catabria durantes el periodo 2007-2013. En la fase de diseno de los cuestionarios y en la de analisis de los resultados obtenidos se ha combinado el metodo Delphi con la Valoracion Contingente. En base a los resultados obtenidos, podemos afirmar que existe margen todavia para plantear modicaciones en los requisitos, cuantias y formas de implementacion de las ayudas acutales que contribuyan a incrementar su eficiencia potenciales. In this paper we analyse the current situation and the future perspectives of alternative agrienvironmental schemes included in the "second pillar" of the Common Agricultural Policy. Agri-environmental schemes aim at fostering the preservation of natural heritage and traditional landscapes in the rural areas of the European Union. Conservation of such habitats and landscapes is directly dependent on the presence of human activity in the rural areas and, more precisely, on the continuity of extensive farming practices on grasslands and the common-pool grazing spots in the rural territory. In this study, in-person interviews with cattle breeders who benefit from the two main agri-environmental schemes from the period 2008-2013 in Cantabria were undertaken. Throughout the design and implementation stages of the study, Delphi and Contingent Valuation methods have been combined. According to the results, there is still margin to undertake modifications on the requisites, payments and design of the current schemes so as to improve their potential efficacy and efficiency.
Additional file 5 of Implementation of a strategy to facilitate effective medical follow-up for Australian First Nations children hospitalised with lower respiratory tract infections: study protocol
Creators: name: Schultz, André
name: Chang, Anne B.
name: Gill, Fenella
name: Walker, Roz
name: Barwick, Melanie
name: Munns, Sarah
name: Cooper, Matthew N.
name: Norman, Richard
name: Laird, Pamela
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 5. Semi-structured interview guide for healthcare providers.
Farey Recursive Functions
Creators: name: Chesebro, Eric
name: Emlen, Cory
name: Ke, Kenton
name: LaFontaine, Denise
name: McKinnie, Kelly
name: Rigby, Catherine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 57M50 (Primary), 05A10 (secondary)

description: This paper introduces Farey Recursive Functions and investigates their basic properties. Farey Recursive Functions are a special type of recursive function from the rationals to a commutative ring. The recursion of these functions is organized by the Farey graph. They arise naturally in the study of 2-bridge knots and links.
Supplementary Results for ‘Constraining tectonic information from the main drainage divide of a mountain belt’
Creators: name: Chuanqi He
name: Ci-Jian Yang
name: Turowski, Jens M.
name: Rao, Gang
name: Duna C. Roda-Boluda
name: Yuan, Xiao-Ping
Publisher: name: figshare
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 40402 Geodynamics
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: 40312 Structural Geology
subject: 40607 Surface Processes
subject: 40313 Tectonics

description: The source data underlying Figs. 1g, 7b, S1, S2, S4, S5, S7, S10, and some topographic data for Southern Taiwan (hillslope length, channel steepness) are provided as a Source Data file. The Source Data file, topographies of all the numerical models at 300 Myr, Supplementary Movie S1, and a Matlab script that can generate a divide location for different geological settings were deposited in figshare. Other relevant data supporting the findings of the study are available in the Supplementary Information, or from the corresponding author upon request.
Paste extrusion of polytetrafluoroethylene (PTFE) fine powder resin : the effects of processing aid physical properties
Creators: name: Ochoa, Isaias
Publisher: name: University of British Columbia
Year: 2010

description: The rheological properties of a number of polytetrafluoroethylene (PTFE) pastes were studied relevant to paste extrusion process. The effects of the physical properties of lubricants and the geometrical characteristics of the extrusion die on the preforming, extrusion pressure and mechanical properties of the final extrudates were studied. A number of lubricants were identified as suitable for the paste extrusion of polytetrafluoroethylene (PTFE). They were characterized in terms of both flow and surface properties. It was found that it is possible to alter the flow and surface properties of these lubricants independently and thus it became possible to study their relative effects on preforming and extrusion of PTFE paste. Based on this study, it was concluded that preforming quality increases with increase of lubricant viscosity and with improvement in the wetting characteristics of the lubricant with PTFE. The effects of the lubricant physical properties on the processing of polytetrafluoroethylene (PTFE) fine powder resins were also studied by using dies of various geometrical characteristics and resins having a variety of molecular architecture. It was found that the wettability (surface tension) of the lubricant strongly affects the pressure needed to extrude the PTFE pastes. The viscosity of the lubricant was also found to play a significant role in the process since a lubricant with a low viscosity causes the paste to be extruded at a lower pressure. These effects significantly influence the mechanical properties of the final extrudates. The latter are functions of the degree of fibrillation which is significantly influenced by the wettability and viscosity of lubricants. The effects of die geometry on extrusion pressure and mechanical properties of extrudates were assessed in order to determine the geometrical characteristics and operation conditions for the optimization of the process. A rheological equation was developed and proposed for flow simulations of the paste extrusion of PTFE pastes, aiming at optimizing this process. Finally, various additives were tested in order to determine possible processing aids for the paste extrusion of PTFE. It was found that moderate amount of boron nitride and organically modified clays can have beneficial effects on mechanical properties of the final extrudates.
Cauchy's work on integral geometry, centers of curvature, and other applications of infinitesimals
Creators: name: Bair, Jacques
name: Blaszczyk, Piotr
name: Heinig, Peter
name: Kanovei, Vladimir
name: Katz, Mikhail G.
name: McGaffey, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Overview (math.HO)
subject: Differential Geometry (math.DG)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 01A55, 26E35, 01A85, 03A05, 53C65 01A55, 26E35, 01A85, 03A05, 53C65 01A55, 26E35, 01A85, 03A05, 53C65 01A55, 26E35, 01A85, 03A05, 53C65

description: Like his colleagues de Prony, Petit, and Poisson at the Ecole Polytechnique, Cauchy used infinitesimals in the Leibniz-Euler tradition both in his research and teaching. Cauchy applied infinitesimals in an 1826 work in differential geometry where infinitesimals are used neither as variable quantities nor as sequences but rather as numbers. He also applied infinitesimals in an 1832 article on integral geometry, similarly as numbers. We explore these and other applications of Cauchy's infinitesimals as used in his textbooks and research articles. An attentive reading of Cauchy's work challenges received views on Cauchy's role in the history of analysis and geometry. We demonstrate the viability of Cauchy's infinitesimal techniques in fields as diverse as geometric probability, differential geometry, elasticity, Dirac delta functions, continuity and convergence. Keywords: Cauchy--Crofton formula; center of curvature; continuity; infinitesimals; integral geometry; limite; standard part; de Prony; Poisson
description: 21 pages, Real Analysis Exchange
Additional file 6 of Implementation of a strategy to facilitate effective medical follow-up for Australian First Nations children hospitalised with lower respiratory tract infections: study protocol
Creators: name: Schultz, André
name: Chang, Anne B.
name: Gill, Fenella
name: Walker, Roz
name: Barwick, Melanie
name: Munns, Sarah
name: Cooper, Matthew N.
name: Norman, Richard
name: Laird, Pamela
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 6. Medical record audit checklist form.
Colombia at its crossroads
Creators: name: Sánchez, Fabio
name: Niño, César
Publisher: name: figshare
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science

description: A pesar del acuerdo de paz firmado por el gobierno colombiano y las Fuerzas Armadas Revolucionarias de Colombia (FARC) en 2016, el país continúa con las dificultades propias de un posconflicto en el que diversos actores pugnan por hacer valer sus intereses.
Comparaison des indicateurs d’efficacité et des indicateurs économiques des navires de pêche dans le cas d’une multi-production
Creators: name: Le Floc’H, Pascal
name: Mardle, Simon
name: Le Floc’H, Pascal
name: Mardle, Simon
Publisher: name: Unknown
Year: 2006
Subjects: subject: Livestock Production/Industries
subject: optimisation techniques
subject: capacity
subject: fishery

description: Les situations de surcapacité sont récurrentes dans l’activité d’exploitation des ressources marines vivantes. Les mesures de capacité d’utilisation et d’efficacité des navires de pêche deviennent dès lors nécessaires. Dans cet article, la méthode DEA (Data Envelopment Analysis) est utilisée dans le cas d’une multi-production. Les données de production et d’utilisation des inputs des navires de pêche sont disponibles sur une base mensuelle pour la période 1994-2003. Les indicateurs d’efficacité des navires sont ensuite comparés à des indicateurs de performance économique issus d’une base de données comptables. Il ressort de l’analyse que les navires les plus performants en terme d’efficacité n’obtiennent pas nécessairement les meilleurs résultats économiques. Ceci est surtout vérifié pour les plus petites unités dont le comportement est plus hétérogène que les navires de plus grande capacité potentielle de production.
Confiance, justification et controverse sur les OGM en Europe
Creators: name: Chaklatti, Samira
name: Rousselière, Damien
name: Chaklatti, Samira
name: Rousselière, Damien
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agricultural and Food Policy
subject: genetically-modified-organisms
subject: controversy
subject: economies of worth
subject: public debate and discussion
subject: Eurobarometer
subject: cross European study

description: L’apparition des plantes génétiquement modifiées, en Europe, a donné lieu à des débats importants. Cette controverse concernant les OGM apparaît comme le résultat de la confrontation entre les intérêts des différents acteurs (mouvement associatif, lobby industriel, expert et scientifique, représentant politique) organisés en groupes de pression, s’appuyant chacun sur leur propre registre de justification des bienfaits ou des inconvénients supposés des biotechnologies agricoles. Les données d’une enquête européenne menée sur les sentiments des Européens vis-à-vis de la science (Eurobaromètre 58.0 de 2002) permettent de préciser l’importance de la confiance dans les différentes parties prenantes et l’intérêt des différents registres de justification pour le positionnement dans le débat public de la part des « citoyens ordinaires ». En conclusion sont discutés les principaux faits stylisés ainsi caractérisés.
The asymptotic conformal invariance in Chern-Simons theory with matter in curved space-time
Creators: name: Timoshkin, Alexandr V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the asymptoic behaviour of the Chern - Simons (CS) theory with matter in curved space - time. The asymptotics of effective couplings are discussed.
Kinetic approach to the cluster liquid-gas transition
Creators: name: Calvo, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The liquid-gas transition in free atomic clusters is investigated theoretically based on simple unimolecular rate theories and assuming sequential evaporations. A kinetic Monte Carlo scheme is used to compute the time-dependent properties of clusters undergoing multiple dissociations, and two possible definitions of the boiling point are proposed, relying on the cluster or gas temperature. This numerical approach is supported by molecular dynamics simulations of clusters made of sodium atoms or C60 molecules, as well as simplified rate equation.
Additional file 7 of Implementation of a strategy to facilitate effective medical follow-up for Australian First Nations children hospitalised with lower respiratory tract infections: study protocol
Creators: name: Schultz, André
name: Chang, Anne B.
name: Gill, Fenella
name: Walker, Roz
name: Barwick, Melanie
name: Munns, Sarah
name: Cooper, Matthew N.
name: Norman, Richard
name: Laird, Pamela
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 7. Telephone follow-up at 6-12 weeks post discharge.
Staircase-like transfer characteristics in multilayer MoS2 field-effect transistors
Creators: name: Ohoka, Takuya
name: Nouchi, Ryo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Layered semiconductors, such as MoS2, have attracted interest as channel materials for post-silicon and beyond-CMOS electronics. Much attention has been devoted to the monolayer limit, but the monolayer channel is not necessarily advantageous in terms of the performance of field-effect transistors (FETs). Therefore, it is important to investigate the characteristics of FETs that have multilayer channels. Here, we report the staircase-like transfer characteristics of FETs with exfoliated multilayer MoS2 flakes. Atomic force microscope characterizations reveal that the presence of thinner terraces at the edges of the flakes accompanies the staircase-like characteristics. The anomalous staircase-like characteristics are ascribable to a difference in threshold-voltage shift by charge transfer from surface adsorbates between the channel center and the thinner terrace at the edge. This study reveals the importance of the uniformity of channel thickness.
Relationship-aware Multivariate Sampling Strategy for Scientific Simulation Data
Creators: name: Hazarika, Subhashis
name: Biswas, Ayan
name: Wolfram, Phillip J.
name: Lawrence, Earl
name: Urban, Nathan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Graphics (cs.GR)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: With the increasing computational power of current supercomputers, the size of data produced by scientific simulations is rapidly growing. To reduce the storage footprint and facilitate scalable post-hoc analyses of such scientific data sets, various data reduction/summarization methods have been proposed over the years. Different flavors of sampling algorithms exist to sample the high-resolution scientific data, while preserving important data properties required for subsequent analyses. However, most of these sampling algorithms are designed for univariate data and cater to post-hoc analyses of single variables. In this work, we propose a multivariate sampling strategy which preserves the original variable relationships and enables different multivariate analyses directly on the sampled data. Our proposed strategy utilizes principal component analysis to capture the variance of multivariate data and can be built on top of any existing state-of-the-art sampling algorithms for single variables. In addition, we also propose variants of different data partitioning schemes (regular and irregular) to efficiently model the local multivariate relationships. Using two real-world multivariate data sets, we demonstrate the efficacy of our proposed multivariate sampling strategy with respect to its data reduction capabilities as well as the ease of performing efficient post-hoc multivariate analyses.
description: To appear as IEEE Vis 2020 Shortpaper
AutoSweep: Recovering 3D Editable Objectsfrom a Single Photograph
Creators: name: Chen, Xin
name: Li, Yuwei
name: Luo, Xi
name: Shao, Tianjia
name: Yu, Jingyi
name: Zhou, Kun
name: Zheng, Youyi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper presents a fully automatic framework for extracting editable 3D objects directly from a single photograph. Unlike previous methods which recover either depth maps, point clouds, or mesh surfaces, we aim to recover 3D objects with semantic parts and can be directly edited. We base our work on the assumption that most human-made objects are constituted by parts and these parts can be well represented by generalized primitives. Our work makes an attempt towards recovering two types of primitive-shaped objects, namely, generalized cuboids and generalized cylinders. To this end, we build a novel instance-aware segmentation network for accurate part separation. Our GeoNet outputs a set of smooth part-level masks labeled as profiles and bodies. Then in a key stage, we simultaneously identify profile-body relations and recover 3D parts by sweeping the recognized profile along their body contour and jointly optimize the geometry to align with the recovered masks. Qualitative and quantitative experiments show that our algorithm can recover high quality 3D models and outperforms existing methods in both instance segmentation and 3D reconstruction. The dataset and code of AutoSweep are available at https://chenxin.tech/AutoSweep.html.
description: 10 pages, 12 figures
Fully implicit and accurate treatment of jump conditions for two-phase incompressible Navier-Stokes equation
Creators: name: Cho, Hyuntae
name: Kang, Myungjooo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present a numerical method for two-phase incompressible Navier-Stokes equation with jump discontinuity in the normal component of the stress tensor and in the material properties. Although the proposed method is only first-order accurate, it does capture discontinuity sharply, not neglecting nor omitting any component of the jump condition. Discontinuities in velocity gradient and pressure are expressed using a linear combination of singular force and tangential derivatives of velocities to handle jump conditions in a fully implicit manner. The linear system for the divergence of the stress tensor is constructed in the framework of the ghost fluid method, and the resulting saddle-point system is solved via an iterative procedure. Numerical results support the inference that the proposed method converges in $L^\infty$ norms even when velocities and pressures are not smooth across the interface and can handle a large density ratio that is likely to appear in a real-world simulation.
Du concept à la fiabilité de la méthode du transfert en économie de l’environnement : un état de l’art
Creators: name: Genty, Aurélien
name: Genty, Aurélien
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: transfer
subject: meta-model
subject: reliability
subject: validity

description: La méthode du transfert est une méthode de valorisation de biens environnementaux rapide et peu coûteuse, dont le principe est de réutiliser des résultats établis antérieurement pour des biens similaires. Cet article s’attache tout d’abord à formaliser et comparer les différentes techniques de transfert existantes. Il expose ensuite la méthodologie permettant d’évaluer leur fiabilité. Enfin, il analyse les résultats empiriques relatifs à la validité du transfert, seule composante de la fiabilité pour l’instant étudiée. Il ressort de cette étude que ni la validité du transfert (absence de biais), ni la supériorité théorique du transfert de modèle par rapport au transfert de valeur n’ont été à ce jour démontrées. Cependant, il convient de noter que les procédures de test généralement utilisées ne sont pas adaptées pour mettre en évidence la présence ou non d’un biais de transfert. Par ailleurs, les transferts de modèle n’ont pas été optimaux dans l’ensemble.
Le droit d’épandage a-t-il un prix ? Mesure sur le marché foncier
Creators: name: Le Goffe, Philippe
name: Salanié, Julien
name: Le Goffe, Philippe
name: Salanié, Julien
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: land
subject: hedonic pricing
subject: transferable permits
subject: manure spreading
subject: manure surplus
subject: nitrogen

description: Ce travail porte sur les marchés de l’épandage dont le fonctionnement est proche de celui des marchés de droits à polluer. Comme il est difficile d’observer directement les transactions sur les services d’épandage, on s’est intéressé à la capitalisation de la rente d’épandage sur le marché foncier. L’article commence par un résumé de la littérature sur le prix des terres. Un modèle micro-économique basé sur la maximisation du profit d'un éleveur et d'un cultivateur conduit à (i) l'offre et la demande de droits d’épandage et à (ii) l'intégration de la rente d'épandage dans le prix de la terre. Une application hédoniste porte sur un fichier de 7 000 mutations individuelles issues du marché foncier breton. Le prix de la terre dépend de la qualité des terres et de leur orientation productive, ainsi que des rendements céréaliers et des quotas laitiers. Il augmente lorsque la densité animale s’accroît. La densité de porcs permet la meilleure prédiction, parce qu’elle est probablement un bon indicateur de la demande de terres d’épandage. En conclusion, le marché breton est comparé à celui des Pays-Bas et les recherches futures sont évoquées.
Colombia en su encrucijada
Creators: name: Sánchez, Fabio
name: Niño, César
Publisher: name: figshare
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science

description: A pesar del acuerdo de paz firmado por el gobierno colombiano y las Fuerzas Armadas Revolucionarias de Colombia (FARC) en 2016, el país continúa con las dificultades propias de un posconflicto en el que diversos actores pugnan por hacer valer sus intereses.
Moderating effect of traceability on value chain governance of credence goods: a perspective of the New Institutional Economics framework
Creators: name: Gachukia, Martin Kang’ethe
name: Gachukia, Martin Kang’ethe
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: Financial Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Institutional and Behavioral Economics
subject: International Relations/Trade
subject: Land Economics/Use
subject: Marketing
subject: FOS: Economics and business
subject: Political Economy
subject: Production Economics
subject: agriculture
subject: transaction costs
subject: information asymmetry
subject: bounded rationality
subject: behavioural uncertainty

description: This paper reviews the application of New Institutional Economics (NIE) theoretical assumptions and the way they relate to value chain governance and are moderated by traceability and information technology. Through literature review, NIE assumptions are examined by comparing how they are partially mitigated by traceability. The effect of these mitigations is realised in the readjustment of value chain governance typologies to suit lean and more competitive and visible value chains. The findings are based on the fact that information asymmetry, bounded rationality and behavioural uncertainty have given rise to incomplete contracts, especially in the agricultural sectors of most developing economies. Supply chain actors in this sector have the constant burden of assurance in ascertaining that credence goods remain authentically safe. The moderating effect of traceability is therefore proposed to reduce these uncertainties and is as such a form of assurance to promote both a holistic approach in compliance with standards and a seamless mechanism for product and process integration. However, this moderating effect, despite being novel in the value chain governance discourse, needs to be empirically ascertained. The novelty of this paper is based on the agricultural development agenda of developing economies in the light of the discourse on market-oriented reforms, following multilateral trade liberalisation and especially structural adjustment programmes in developing countries. The consequent increase in world market integration has led to the promotion of value chain strategies and reconsideration of how food is governed in these markets.
description: http://dx.doi.org/10.7896/j.1513
Letter to the Editor: Note on published research on the effects of COVID-19 on the environment without sufficient depth of science
Creators: name: Mustafa, Ahmed
name: McPhearson, Timon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Dear Editor-in-Chief: We have given two articles published recently in Science of the Total Environment by Mandal and Pal (2020) and Zambrano-Monserrate et al. (2020) a thorough reading. Both articles present a significant association between the novel Coronavirus (COVID-19) social distancing policies and improvement in environmental quality such as air pollution, land surface temperature, and noise. Both articles present good research, complemented by detailed explanations and displays, yet we have a few concerns that affect the interpretation and meaning of the results.
description: This is a preprint submitted to Science of the Total Environment as Letter to the Editor
Methane decomposition and partial oxidation in a cyclic mode over supported Co and Ni catalysts
Creators: name: Li, Jerry Kai Hsu
Publisher: name: University of British Columbia
Year: 2010

description: CH₄ decomposition to produce C and H₂, followed by partial oxidation of the C has been investigated in a cyclic process over supported Co and Ni catalysts. The catalysts are characterized by TPR, BET surface area, XRD and TEM. A tapered element oscillating microbalance (TEOM), used in the present study to monitor the reactions, operates as fixed bed micro-reactor that can measure the real time mass change of the catalyst during reaction. Product gases from the TEOM reactor were analyzed continuously by a quadrupole mass spectrometer. Ni catalysts showed a better activity and stability compared to Co catalysts. At 773 K, the initial CH₄ decomposition rate at 773 K of Ni catalysts (1.23 x 10⁻⁵ mol/(g·s)) was faster than Co catalysts (9.44 x10⁻⁶ mol/(g·s)). Steady H₂ production and initial CH₄ decomposition rate were achieved for 6 cycles over Ni catalysts, but complete deactivation was observed after the 2nd cycle over Co catalysts. A time delay of up to 2500 seconds occurred between the introduction of CH₄ and the production of H₂ on Co catalysts but no such induction period occurred for Ni catalysts. Catalysts can also be regenerated by carbon removal using CO₂. The CO to H₂ ratio during CH₄ decomposition decreased compared to carbon removal with O₂ since formation of NiO was reduced. However, the rate of carbon removal by CO₂ was too slow for any practical application of the cyclic reaction. The H₂ production profile obtained during the first cycle of CH₄decomposition on a freshly loaded Ni catalyst was in qualitative agreement with that predicted by the deactivation model proposed by Zhang and Smith (2005). The H₂ production rate reached a maximum initially, decreased rapidly and then increased slowly before decreasing again. The statistical analysis of a fractional factorial design of experiments for the CH₄ decomposition, partial oxidation cyclic reaction indicated that higher H₂ production rate can be obtained by conducting the CH₄ decomposition at a higher temperature with a shorter duration. No significant effects were identified for selectivity to CO during oxidation and the overall quantity of CO produced during CH₄ decomposition.