cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
THE USE OF PROFIT FUNCTION TO EVALUATE RELATIVE ECONOMIC EFFICIENCY IN AGRICULTURE
Creators: name: Pudasaini, Som P.
name: Pudasaini, Som P.
Publisher: name: Unknown
Year: 1981
Subjects: Agricultural Finance

description: The purpose of this paper is first to examine why a profit function approach is methodologically more flexible and statistically better suited for estimation than a production function model. Then it is to present a brief theoretical overview underlying the profit function approach. Thirdly and most importantly, it is to demonstrate how a profit function model can be empirically estimated to derive input demand and output supply elasticities (functions) and to evaluate economic efficiency of various groups of farmers such as large vs. small or tractorized vs. non-tractorized farms.
Complete Lie algebroid actions and the integrability of Lie algebroids
Creators: name: Álvarez, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We give a new proof of the equivalence between the existence of a complete action of a Lie algebroid on a surjective submersion and its integrability. The main tools in our approach are double Lie groupoids and multiplicative foliations, our proof relies on a simple characterization of those vacant double Lie groupoids which induce a Lie groupoid structure on their orbit spaces.
description: v2: minor corrections, v1:This note is a re-elaboration of Section 4 of arXiv:1910.06164v1
TECHNOLOGY TRANSFER FROM THE UNIVERSITY OF MINNESOTA ESTIMATING THE ECONOMIC IMPACT
Creators: name: Ruttan, Vernon W.
name: Ruttan, Vernon W.
Publisher: name: Unknown
Year: 2001
Subjects: Research and Development/Tech Change/Emerging Technologies

description: There is strong synergy among research, education, technology development and technology transfer. Examples of successful public-private technology transfer linkage institutions are provided. But efforts to document the benefits of research conducted at the University of Minnesota to the state have rarely been conducted with the rigor that would be required to meet the test of professional credibility. A program of research to develop more rigorous evidence on economic benefits to the State is proposed.
Do US Consumers’ Perceive Local and Organic Food Differently? An Analysis Based on Means‐End Chain Analysis and Word Association
Creators: name: Haas, Rainer
name: Sterns, James
name: Meixner, Oliver
name: Nyob, Diane–Isis
name: Traar, Vera
Publisher: name: CentMA
Year: 2014
Subjects: local food; organic food; consumer values and motives; product attributes of local food and organic food

description: The market of local and organic food is still a niche market in the USA, despite its strong growth rates. Both offer consumers an alternative to a globalized anonymous food supply chain. Yet local food and organic food seem to be
overlapping and to some degree competing food concepts. While the organic food market somehow has managed to “mature”, being widely distributed in national supermarket chains, local food in the US still seems to be tied to a
“grassroots food movement”, being mainly distributed over short food supply chains. With several trends indicating sustained growth for local and organic consumption, this paper first addresses different connotations of local food
and compares them to standard definitions of organic food. The main focus is to explore the perception of US consumers towards local and organic food, using results from two different studies. Both studies use laddering techniques and word association tests, which were undertaken at Cornell University in New York State and at the University of Florida in the city of Gainesville. These findings are used to achieve a better understanding of the image of local and organic food, and the motives and values of local and organic food consumers.
description: International Journal on Food System Dynamics, Vol 4, No 3 (2013)
Reconnections of Vortex Loops in the Superfluid Turbulent HeII. Rates of the Breakdown and Fusion processes
Creators: name: Nemirovskii, Sergey K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Kinetics of merging and breaking down vortex loops is the important part of the whole vortex tangle dynamics. Another part is the motion of individual lines, which obeys the Biot-Savart law in presence of friction force and of applied external velocity fields if any. In the present work we evaluate the coefficients of the reconnection rates $A(l_{1},l_{2},l)$ and $B(l,l_{1},l_{2})$. Quantity $A$ is a number (per unit of time and per unit of volume) of events, when two loops with lengths $l_{1}$and $l_{2}$ collide and form the single loop of length $ l=l_{1}+l_{2}$. Quantity $% B(l,l_{1},l_{2}) $ describes the rate of events, when the single loop of the length $l$ breaks down into two the daughter loops of lengths $ l_{1}$ and $l_{2}$. These quantities ave evaluated as the averaged numbers of zeroes of vector $\mathbf{S}%_{s}(ξ_{2},ξ_{1},t)$ connecting two points on the loops of $ξ_{2}$ and $ ξ_{1}$ at moment of time $t$. Statistics of the individual loops is taken from the Gaussian model of vortex tangle. PACS-number 67.40
description: 9 pages, 5 figures, To be submitted to JLTP
The group structure of dynamical transformations between quantum reference frames
Creators: name: Ballesteros, Angel
name: Giacomini, Flaminia
name: Gubitosi, Giulia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Recently, it was shown that when reference frames are associated to quantum systems, the transformation laws between such quantum reference frames need to be modified to take into account the quantum and dynamical features of the reference frames. This led to a relational description of the phase space variables of the quantum system of which the quantum reference frames are part of. While such transformations were shown to be symmetries of the system's Hamiltonian, the question remained unanswered as to whether they enjoy a group structure, similar to that of the Galilei group relating classical reference frames in quantum mechanics. In this work, we identify the canonical transformations on the phase space of the quantum systems comprising the quantum reference frames, and show that these transformations close a group structure defined by a Lie algebra, which is different from the usual Galilei algebra of quantum mechanics. We further find that the elements of this new algebra are in fact the building blocks of the quantum reference frames transformations previously identified, which we recover. Finally, we show how the transformations between classical reference frames described by the standard Galilei group symmetries can be obtained from the group of transformations between quantum reference frames by taking the zero limit of the parameter that governs the additional noncommutativity introduced by the quantum nature of inertial transformations.
description: Version accepted in Quantum. 15 pages main text; 3 pages Appendix; 1 table
TOWARD A GLOBAL AGRICULTURAL SYSTEM
Creators: name: Ruttan, Vernon W.
name: Von Witzke, Harald
name: Ruttan, Vernon W.
name: Von Witzke, Harald
Publisher: name: Unknown
Year: 1988
Subjects: International Relations/Trade

description: Since World War II barriers to international trade in industrial commodities have been reduced while barriers to agricultural commodity trade have become more severe. During the last several decades the world has experienced cycles of "food pessimism" and "food optimism." Nevertheless, as a result of technical change the terms at which the world's consumers can expect to have access to food appears to be more favorable in the future than in the past. If consumers are to have access to the greater abundance that can be made available, it will be necessary for developed market economies to reduce the distortions resulting from agricultural commodity and trade policies. It is in the interest of both producers and consumers, in developed and developing countries, that the world move toward an international trading regime in which agricultural commodities move across national borders at least as freely as financial resources.
Ion Trap in a Semiconductor Chip
Creators: name: Stick, D.
name: Hensinger, W. K.
name: Olmschenk, S.
name: Madsen, M. J.
name: Schwab, K.
name: Monroe, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The electromagnetic manipulation of isolated atoms has led to many advances in physics, from laser cooling and Bose-Einstein condensation of cold gases to the precise quantum control of individual atomic ion. Work on miniaturizing electromagnetic traps to the micrometer scale promises even higher levels of control and reliability. Compared with 'chip traps' for confining neutral atoms, ion traps with similar dimensions and power dissipation offer much higher confinement forces and allow unparalleled control at the single-atom level. Moreover, ion microtraps are of great interest in the development of miniature mass spectrometer arrays, compact atomic clocks, and most notably, large scale quantum information processors. Here we report the operation of a micrometer-scale ion trap, fabricated on a monolithic chip using semiconductor micro-electromechanical systems (MEMS) technology. We confine, laser cool, and measure heating of a single 111Cd+ ion in an integrated radiofrequency trap etched from a doped gallium arsenide (GaAs) heterostructure.
description: 4 pages, 4 figures
Does social support reduce cardiovascular stress reactivity only if you want support: a test of a match/mismatch hypothesis
Creators: name: Kors, Deborah Joy
Publisher: name: University of British Columbia
Year: 2009

description: Epidemiological studies have suggested that social support may offer a protective role for cardiovascular health. More recently, researchers have begun to examine possible mechanisms by which social support may reduce cardiovascular reactivity to stress. This study was undertaken to determine if the implementation of support (presence or absence) needs to be matched with a person's habitual level of support seeking (high or low) in order to obtain physiological benefits during laboratory stressors. It was hypothesized that high support seekers assigned to a support condition would show decreased reactivity relative to all other matched or mismatched conditions. Following the screening of480 students, 135 high and low support seeking men and women were recruited for the laboratory phase. In this phase, participants performed a math and a speech task, while alone or while receiving support. Participants were randomly assigned to a condition that either matched (e.g., support provision for support seekers) or mismatched their support seeking style. Heart rate (HR), systolic blood pressure (SBP) and diastolic blood pressure (DBP) were monitored continuously. Self-report measures evaluating the participants' reactions to the task and to support were administered pre- and post-task. Although the central (match) hypothesis of this study was not supported, several interesting findings emerged: Low support seeking men exhibited larger SBP responses than did high support seeking men during the tasks. Participants receiving support showed greater SBP responses relative to participants who were alone during the tasks. Additionally, supported men showed increased DBP reactivity relative to men who were assigned to an alone condition. Interestingly, high support seeking men and women showed lower resting blood pressures than did low support seeking participants. The findings from the self-report measures did not help to clarify the cardiovascular findings. The findings suggest that future research is needed to better understand how and when support is effective in reducing cardiovascular reactivity to stress.
THE USE OF GENETICS PRINCIPLES IN RESEARCH EVALUATION: AN EXAMPLE WITH SOYBEANS
Creators: name: Norton, George W.
name: Sundquist, W. Burt
name: Norton, George W.
name: Sundquist, W. Burt
Publisher: name: Unknown
Year: 1981
Subjects: Research and Development/Tech Change/Emerging Technologies

description: This paper explores the potential use of quantitative genetics principles in evaluating economic returns to plant breeding research. Basic factors affecting genetic progress are described along with possibilities for quantifying them in relation to research expenditures. An example with soybeans illustrates how this information can be incorporated into ex ante research evaluation.
Emergence of a finite-size-scaling function in the supervised learning of the Ising phase transition
Creators: name: Kim, Dongkyu
name: Kim, Dong-Hee
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We investigate the connection between the supervised learning of the binary phase classification in the ferromagnetic Ising model and the standard finite-size-scaling theory of the second-order phase transition. Proposing a minimal one-free-parameter neural network model, we analytically formulate the supervised learning problem for the canonical ensemble being used as a training data set. We show that just one free parameter is capable enough to describe the data-driven emergence of the universal finite-size-scaling function in the network output that is observed in a large neural network, theoretically validating its critical point prediction for unseen test data from different underlying lattices yet in the same universality class of the Ising criticality. We also numerically demonstrate the interpretation with the proposed one-parameter model by providing an example of finding a critical point with the learning of the Landau mean-field free energy being applied to the real data set from the uncorrelated random scale-free graph with a large degree exponent.
Innovation, Sustainability, and Renewable Energy: Food in Italy’s dilemma
Creators: name: Braga, Francesco
Publisher: name: CentMA
Year: 2013
Subjects: Case study; Innovation; Sustainability; Renewable Energy; Food

description: This Case was used at the First Sustainability in Agribusiness Case Competition held by the College of Management and Economics, at the University of Guelph on March 16‐17, 2012. Other than for the 2012 competition the case has remained confidential. Part 1 was used in the eliminatory round; Part 1 and Part 2 were used for the final round of the competition.
description: International Journal on Food System Dynamics, Vol 4, No 3 (2013)
Hubble Space Telescope Observations of Two Faint Dwarf Satellites of Nearby LMC Analogs from MADCASH
Creators: name: Carlin, Jeffrey L.
name: Mutlu-Pakdil, Burcin
name: Crnojevic, Denija
name: Garling, Christopher T.
name: Karunakaran, Ananthan
name: Peter, Annika H. G.
name: Tollerud, Erik
name: Forbes, Duncan A.
name: Hargis, Jonathan R.
name: Lim, Sungsoon
name: Romanowsky, Aaron J.
name: Sand, David J.
name: Spekkens, Kristine
name: Strader, Jay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a deep Hubble Space Telescope (HST) imaging study of two dwarf galaxies in the halos of Local Volume Large Magellanic Cloud (LMC) analogs. These dwarfs were discovered as part of our Subaru+Hyper Suprime-Cam MADCASH survey: MADCASH-1, which is a satellite of NGC 2403 (D~3.2 Mpc), and MADCASH-2, a previously unknown dwarf galaxy near NGC 4214 (D~3.0 Mpc). Our HST data reach >3.5 mag below the tip of the red giant branch (TRGB) of each dwarf, allowing us to derive their structural parameters and assess their stellar populations. We measure TRGB distances ($D=3.41^{+0.24}_{-0.23}$ Mpc for MADCASH-1, and $D=3.00^{+0.13}_{-0.15}$ Mpc for MADCASH-2), and confirm their associations with their host galaxies. MADCASH-1 is a predominantly old, metal-poor stellar system (age ~13.5 Gyr, [M/H] ~ -2.0), similar to many Local Group dwarfs. Modelling of MADCASH-2's CMD suggests that it contains mostly ancient, metal-poor stars (age ~13.5 Gyr, [M/H] ~ -2.0), but that ~10% of its stellar mass was formed 1.1--1.5 Gyr ago, and ~1% was formed 400--500 Myr ago. Given its recent star formation, we search MADCASH-2 for neutral hydrogen using the Green Bank Telescope, but find no emission and estimate an upper limit on the HI mass of $<4.8\times10^4 M_{\odot}$. These are the faintest dwarf satellites known around host galaxies of LMC mass outside the Local Group ($M_{V,\text{MADCASH-1}}=-7.81\pm0.18$, $M_{V,\text{MADCASH-2}}=-9.15\pm0.12$), and one of them shows signs of recent environmental quenching by its host. Once the MADCASH survey for faint dwarf satellites is complete, our census will enable us to test CDM predictions for hierarchical structure formation, and discover the physical mechanisms by which low-mass hosts influence the evolution of their satellites.
description: 20 pages, 9 figures, 4 tables; minor edits to match accepted version published in ApJ
Qualitative Analysis of Forced Response of Blisks With Friction Ring Dampers
Creators: name: Laxalde, Denis
name: Thouverez, Fabrice
name: Sinou, Jean-Jacques
name: Lombard, Jean-Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A damping strategy for blisks (integrally bladed disks) of turbomachinery involving a friction ring is investigated. These rings, located in grooves underside the wheel of the blisks, are held in contact by centrifugal loads and the energy is dissipated when relative motions between the ring and the disk occur. A representative lumped parameter model of the system is introduced and the steady-state nonlinear response is derived using a multi-harmonic balance method combined with an AFT procedure where the friction force is calculated in the time domain. Numerical simulations are presented for several damper characteristics and several excitation configurations. From these results, the performance of this damping strategy is discussed and some design guidelines are given.
Government turnover in parliamentary democracies
Creators: name: Diermeier, Daniel
name: Merlo, Antonio
name: Diermeier, Daniel
name: Merlo, Antonio
Publisher: name: Unknown
Year: 1998
Subjects: subject: Political Economy
subject: government stability
subject: minority coalitions
subject: surplus coalitions.

description: In this paper we consider a dynamic model of government formation and termination in parliamentary democracies. Our analysis accounts for the following observed phenomena: (1) Cabinet reshuffles; (2) Cabinet replacements; (3) Early elections; (4) surplus governments; (5) Minority governments; (6) The relative instability of minority governments.
Future Internet for Safe and Healthy Food from Farm to Fork
Creators: name: Wolfert, Sjaak
Publisher: name: CentMA
Year: 2014
Subjects: Future Internet; Food

description: At the present time, we are facing an emerging problem which will become even more urgent and critical in the coming decades: the Food and Agricultural Organization of the United Nations (FAO) estimates an increase of the world population from the current 6 billion people to 9-11 billion people by 2050 leading to a doubling of world-wide food demand. It is generally believed that that smart, data-rich ICT-services and applications, in combination with advanced hardware, can provide the much needed breakthroughs to producing enough good quality food in a safe and environmental-sound way. Therefore, the EU’s Future Internet Public-Private Partnership (FI-PPP) program (www.fi-ppp.eu) aims to make service infrastructures and business processes more intelligent, more efficient and more sustainable through tighter integration with Future Internet (FI) technologies.
description: International Journal on Food System Dynamics, Vol 4, No 4 (2013): Special issue: Transparency and the Future Internet
Benefits through Utilising EPC Network Components in Service‐Oriented Environments – an Analysis Using the Example of the Food Industry
Creators: name: Tröger, Ralph
name: Reiche, Robert
name: Schiefer, Gerhard
Publisher: name: CentMA
Year: 2014
Subjects: Electronic Product Code; EPC Network; EPCIS; Food Industry; SOA; Object Name Service; Discovery Services

description: Improvements in the food sector imply enhancements of delivering food which is safe, affordable, readily available, and of the quality and diversity consumers expect. However, prevalent information systems (IS) of companies in the food industry are not ready to support further significant improvements. They especially lack the capability to exchange relevant information in an efficient manner.

Since recently, two major developments can be observed from IS perspective: the spreading of service-oriented architectures (SOA) as well as an increase in mass serialization (due to public and private traceability requirements, e.g.). So far, though most important due to food safety, a growing need to become more efficient as well as an increasing information demand of consumers, the food sector has attracted little attention in literature concerning an analysis about the potential of both service-orientation and the Electronic Product Code (EPC) Network. This is why this paper will investigate to which extent these two developments can contribute to facilitate food companies’ IS helping them to maintain their competiveness.

 As a starting point, the research paper will depict the state of the art including SOA and the EPC Network. After describing the research approach, it will proceed with a characterisation of the food sector including an examination why there is need for action. Based on current research findings as well as experience gathered in recent projects, the paper will investigate the application of the EPC Network with its three major components, i. e. EPCIS (EPC Information Services), ONS (Object Name Service) and the EPC Discovery Services, as part of future IS architectures in this sector. The paper will close with a discussion whether the envisioned IS architecture is appropriate to accomplish the previously identified challenges and requirements in the food sector in a more agile, efficient and effective way. What is more, it will highlight the most pressing challenges and provide an outlook as to the following steps of the research.
description: International Journal on Food System Dynamics, Vol 4, No 4 (2013): Special issue: Transparency and the Future Internet
Klassenklima aus Sicht von Schülerinnen und Schülern mit Migrationshintergrund
Creators: name: Przibilla, Bodo
name: Linderkamp, Friedrich
Publisher: name: figshare
Year: 2020
Subjects: subject: 130312 Special Education and Disability
subject: FOS: Educational sciences
subject: 160303 Migration
subject: FOS: Sociology
subject: 170103 Educational Psychology
subject: FOS: Psychology

description: Die Qualität von Schule und Unterricht zeigt sich u.a. darin, wie der Reproduktion sozialer Ungleichheit im Bildungswesen bspw. durch systematische und institutionelle Benachteiligung von Schülerinnen und Schüler (SuS) mit Migrationshintergrund entgegengewirkt werden kann. Im Rahmen aktueller Modelle zur Beschreibung von (inklusiver) Schul- und Unterrichtsqualität, wird das Klassenklima, beschrieben als subjektive Einschätzung der bestehenden Lernumgebungen durch die beteiligten Interakteure, zunehmend hervorgehoben, es fehlt jedoch an differenzierten Befunde zur Beurteilung des Klassenklimas aus Sicht von SuS mit Migrationshintergrund. In der vorliegenden Studie beurteilten 1292 SuS aus 49 Schulklassen der Jahrgangsstufen vier bis acht das Klima auf Schul-, Klassen- und Individualebene. Mehrebenenanalysen zeigen, dass SuS mit Migrationshintergrund die Schule insgesamt strenger und restriktiver wahrnehmen und den bestehenden sozialen und leistungsbezogenen Druck auf Klassenebene höher bewerten. Demgegenüber werden positive Aspekte des Klassenklimas wie die Lerngemeinschaft und Schülerzentriertheit von SuS mit Migrationshintergrund tendenziell positiver wahrgenommen. Die Befunde geben einen differenzierten Überblick über unterschiedliche Wahrnehmungen einzelner Dimensionen des Klassenklimas und legen nahe, migrationsbedingte Unterschiede in der Bewertung und Verbesserung von Lernumgebungen im Schulkontext sensibler zu berücksichtigen.
Method of determining cosmological parameter ranges with samples of candles with an intrinsic distribution
Creators: name: Qin, Yi-Ping
name: Zhang, Bin-Bin
name: Dong, Yun-Ming
name: Zhang, Fu-Wen
name: Li, Huai-Zhen
name: Jia, Lan-Wei
name: Mao, Li-Sheng
name: Lu, Rui-Jing
name: Yi, Ting-Feng
name: Cui, Xiao-Hong
name: Zhang, Zhi-Bin
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, the effect of the intrinsic distribution of cosmological candles is investigated. We find that, in the case of a narrow distribution, the deviation of the observed modulus of sources from the expected central value could be estimated within a ceratin range. We thus introduce a lower and upper limits of $χ^{2}$, $χ_{\min}^{2}$ and $ χ_{\max}^{2}$, to estimate cosmological parameters by applying the conventional minimizing $χ^{2}$ method. We apply this method to a gamma-ray burst (GRB) sample as well as to a combined sample including this GRB sample and an SN Ia sample. Our analysis shows that: a) in the case of assuming an intrinsic distribution of candles of the GRB sample, the effect of the distribution is obvious and should not be neglected; b) taking into account this effect would lead to a poorer constraint of the cosmological parameter ranges. The analysis suggests that in the attempt of constraining the cosmological model with current GRB samples, the results tend to be worse than what previously thought if the mentioned intrinsic distribution does exist.
description: 6 pages,4 figures,1 tables.Data updated. Main conclusion unchanged
Sources of Sectoral Growth in an Economy Wide Context: The Case of U.S. Agriculture
Creators: name: Munisamy, Gopinath
name: Roe, Terry L.
name: Munisamy, Gopinath
name: Roe, Terry L.
Publisher: name: Unknown
Year: 1995
Subjects: International Development

description: Growth in US agriculture is linked to the non-farm economy through domestic terms of trade and factor market adjustments. With almost stable input growth, the relatively large contributions from growth in Total Factor Productivity (TFP) are off-set by declining real prices of primary farm products. The resulting net growth in value of farm output, at 0.25 % per annum, implies that the gains in TFP are shared by intermediate and final consumers of farm products. The decomposition of TFP suggests that public agricultural stock of knowledge and infrastructure are 'robustly' associated with TFP growth, while spill-overs from private agricultural and economy wide Research and Development (R&D) are positive but, relatively small.
A relativistic study of Bessel beams
Creators: name: Hacyan, S.
name: Jauregui, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a fully relativistic analysis of Bessel beams revealing some noteworthy features that are not explicit in the standard description. It is shown that there is a reference frame in which the field takes a particularly simple form, the wave appearing to rotate in circles. The concepts of polarization and angular momentum for Bessel beams is also reanalyzed.
description: 11 pages, 2 figs
Energy loss of heavy quarkonia in hot QCD plasmas
Creators: name: Hong, Juhee
name: Lee, Su Houng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the energy loss of heavy quarkonia in high temperature QCD plasmas and investigate the energy loss effects on quarkonium suppression. Based on the effective vertex derived from the Bethe-Salpeter amplitude for quarkonium, the collisional and radiative energy loss are determined by quarkonium-gluon elastic scattering and the associated gluon-bremsstrahlung, respectively. In the energy regime $E
description: 12 pages, 5 figures
Elternbelastung im Kontext der Corona-Krise – Erste Ergebnisse eines Projekts zur langzeitlichen Analyse des Belastungserlebens von Eltern
Creators: name: Przibilla, Bodo
name: Thelen, Paula
name: Linderkamp, Friedrich
Publisher: name: figshare
Year: 2020
Subjects: subject: 130312 Special Education and Disability
subject: FOS: Educational sciences
subject: Developmental and Educational Psychology

description: Die Corona-Krise geht mit weitreichenden Änderungen der gesellschaftlichen Rahmenbedingungen u.a. in den Bereichen Arbeit, Einkommen, (Kinder-)Betreuung, Freizeit und Schulbildung einher, die insbesondere Eltern und Familien vor besondere Herausforderungen stellen und in erhöhtem individuellen Belastungserleben resultieren können. Psychologische Belastung von Eltern wird in transaktionalen, bio-psycho-sozialen Entwicklungsmodellen als Risikofaktor zur Entstehung psychischer Krankheiten sowie als Risikofaktor für Kindesvernachlässigung und Kindesmisshandlung angenommen. Resilienz von Eltern und Familien ergibt sich nach sozial-ökologischem Entwicklungsverständnis aus einem komplexen und prozessualen Zusammenspiel individueller Faktoren und sozio-ökologischer Rahmenbedingungen. Die vorliegende Studie präsentiert erste Befunde eines laufenden Projektes, welches im Kontext der aktuellen Corona-bedingten Ausnahmesituation das Ziel verfolgt, den mehrheitlich auf korrelativen Studiendesigns basierenden Forschungsstand zum Zusammenhang individueller und sozialer Rahmenbedingungen und Elternbelastung durch eine Längsschnitt-Perspektive zu erweitern.
Η έννοια της ευσπλαχνίας στον ηθικό προβληματισμό για την ευθανασία. Θεώρηση Χριστιανικής Ηθικής
Creators: name: Τσιόκανη, Δάφνη Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Ευθανασία
Φιλανθρωπία
Ηθικός προβληματισμός
Euthanasia
Charity
Moral- ethic concern

description: Στην παρούσα εργασία θα εξετάσουμε την έννοια της ευσπλαχνίας σε σχέση με τον ηθικό προβληματισμό για την ευθανασία κατά την θεώρηση της χριστιανικής ηθικής. Συγκεκριμένα θα προσεγγίσουμε την έννοια της ευσπλαχνίας στην γενική της μορφή καθώς και με βάση την χριστιανική ηθική. Θα αναφερθούμε στις μορφές ευσπλαχνίας και πώς αυτή βιώνεται ως πράξη από την αρχαιότητα έως και τις ημέρες μας. Στην συνέχεια πραγματευόμαστε την έννοια στην συνάφεια του ηθικού προβληματισμού, εφόσον ο όρος ευσπλαχνία τονίζεται και προβάλλεται ακόμη και από αυτούς που δεν υποστηρίζουν την ευθανασία, κάτι που συνεπώς αποτελεί μέρος του ηθικού προβληματισμού. Τέλος θα παραθέσουμε τον αντίλογο ως προς την έννοια της ευσπλαχνίας σε σχέση με την ευθανασία και πως αυτή κατανοείται από την χριστιανική ηθική.
description: In this paper we will examine the concept of mercy in relation to the moral reflection on euthanasia in the view of Christian ethics. Specifically, we will approach the concept of mercy in its general form as well as based on Christian ethics. We will refer to the forms of mercy and how it is experienced as an act since ancient times to our days. Then we will deal with the concept in relation to moral reflection, since the term mercy is emphasized and promoted even by those who do not support euthanasia, which is therefore part of moral reflection. Finally, we will quote the counterargument regarding the concept of mercy in relation to euthanasia and how it is understood by Christian ethics.
Collapse of the Josephson emission in a carbon nanotube junction in the Kondo regime
Creators: name: Watfa, D.
name: Delagrange, R.
name: Kadlecová, A.
name: Ferrier, M.
name: Kasumov, A.
name: Bouchiat, H.
name: Deblock, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We probe the high frequency emission of a carbon nanotube based Josephson junction and compare it to its DC Josephson current. The AC emission is probed by coupling the carbon nanotube to an on-chip detector (a Superconductor-Insulator-Superconductor junction), via a coplanar waveguide resonator. The measurement of the photo-assisted current of the detector gives direct access to the signal emitted by the carbon nanotube. We focus on the gate regions that exhibit Kondo features in the normal state and demonstrate that when the DC supercurrent is enhanced by the Kondo effect, the AC Josephson effect is strongly reduced. This result is compared to NRG theory and is attributed to a transition between the singlet ground state and the doublet excited state which is enabled only when the junction is driven out-of-equilibrium by a voltage bias.
description: 5 pages, 4 figures, supplemental material
Longitudinally Polarized Photoproduction of Inclusive Hadrons at Fixed-Target Experiments
Creators: name: Jager, B.
name: Stratmann, M.
name: Vogelsang, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a detailed phenomenological study of spin-dependent single-inclusive high-p_T hadron photoproduction with particular emphasis on the kinematics relevant for the Compass and Hermes fixed-target experiments. We carefully examine the theoretical uncertainties associated with the only moderate transverse momenta accessible in such measurements and analyze the sensitivity of the relevant spin asymmetries to the gluon polarization in the nucleon as well as to the completely unknown parton content of circularly polarized photons.
description: 12 pages, 14 figures; final version to appear in EPJC; comparison to E155 data and references added
Economics of Food and Safety: Risk, Information, and the Demand and Supply of Health
Creators: name: Falconi, Cesar
name: Roe, Terry L.
name: Falconi, Cesar
name: Roe, Terry L.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: health
subject: expected utility
subject: government intervention.

description: A model of expected utility maximization and a stochastic health production function are used to show how consumer's beliefs, the certainty of beliefs, and the presence of information affects demand for goods as they are driven by the demand for health. Then, it is shown that competitive markets fail to account for the health implications of substances in the production of a commodity that affects health, nor are incentives provided to inform consumers of substance concentrations and its implications to health. This result is shown to not necessarily follow in concentrated industries. Finally, conditions are derived whereby a benevolent government, in the absence of rent seeking, chooses optimal levels of information and taxes to attain Pareto optimal outcomes.
Currents of created pairs in strong electric fields
Creators: name: Akhmedov, E. T.
name: Anokhin, A. V.
name: Sadekov, D. I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate tree--level currents of created particles in strong background electric fields in 4D QED for various initial states. Namely, we do that in pulse background for initial vacuum and thermal states at past infinity. In both cases we find that the current grows linearly with the length of the pulse with coefficients of proportionality containing the characteristic Schwinger's factor. For the constant electric field background we calculate the current for several different initial states. We observe that in such a case the current is either zero or linearly divergent. We explain the reason for such a behaviour and compare the situation in ordinary and scalar QED. Finally, we calculate the current in two--dimensional situation in the presence of such settings when the so called Klein paradox can be observed.
description: 19 pages, minor changes, clarifying comments are added, misprints corrected
Global convergence of Negative Correlation Extreme Learning Machine
Creators: name: Perales-González, Carlos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Ensemble approaches introduced in the Extreme Learning Machine (ELM) literature mainly come from methods that relies on data sampling procedures, under the assumption that the training data are heterogeneously enough to set up diverse base learners. To overcome this assumption, it was proposed an ELM ensemble method based on the Negative Correlation Learning (NCL) framework, called Negative Correlation Extreme Learning Machine (NCELM). This model works in two stages: i) different ELMs are generated as base learners with random weights in the hidden layer, and ii) a NCL penalty term with the information of the ensemble prediction is introduced in each ELM minimization problem, updating the base learners, iii) second step is iterated until the ensemble converges. Although this NCL ensemble method was validated by an experimental study with multiple benchmark datasets, no information was given on the conditions about this convergence. This paper mathematically presents the sufficient conditions to guarantee the global convergence of NCELM. The update of the ensemble in each iteration is defined as a contraction mapping function, and through Banach theorem, global convergence of the ensemble is proved.
description: Jupyter Notebook associated in https://github.com/cperales/pyridge/blob/ncelm/NCELM_convergence.ipynb
Bilateral Harmonization of EC and U.S. Agricultural Policies
Creators: name: Mahe, Louis Adrien Pascal
name: Tavera, Christophe
name: Mahe, Louis Adrien Pascal
name: Tavera, Christophe
Publisher: name: Unknown
Year: 1988
Subjects: Agricultural and Food Policy
International Relations/Trade

description: Agricultural policies in both Europe and the United States provide commodities with an excessively high and distorted pattern of support. The economic interdependencies of the policies give rise to adverse fiscal and economic costs, which are viewed as disharmonies in the existing policy measures both within and between the two regions. Unilateral and simultaneous EC and U.S. policy changes are simulated with an international trade model. They are carried in three steps: (1) grains and feeds, (2) beef and dairy, and (3) sugar. Both cross effects and own effects are examined on typical policy targets. Results suggest that while world prices are sometimes drastically altered, the magnitude of cross effects is small and sometimes ambiguous compared to own effects. Feed livestock linkages are dominant factors in the economic rationale behind the interactions between countries. The case for cooperation in this trade game is, however, supported by the evidence from at least a budget point of view.
Efficient choice among domestic and trade policies in the Grossman-Helpman Interest-Group Model
Creators: name: Schleich, Joachim
name: Orden, David
name: Schleich, Joachim
name: Orden, David
Publisher: name: Unknown
Year: 1996
Subjects: subject: International Relations/Trade
subject: Political economy
subject: trade policies
subject: domestic subsidies and taxes
subject: efficient policies
subject: common agency

description: This paper generalizes the recent political economy model of Helpman and Grossman in which contributions by producer lobbies and government decisions about trade policies are modeled as a common agency game. We allow the government to choose among domestic as well as trade interventions. When production and trade policies are available, the equilibrium production policies serve the lobbies while the trade policies reflect the country's international market power. When consumption and trade policies are available, tariffs and export subsidies are applied in a small-country model to serve the special interests, and the domestic policies are selected to restore consumer prices to world levels. In a large-country model, the optimal consumption and trade policies reflect terms-of trade as well as special-interest considerations. The political equilibrium policies of Grossman and Helpman are special cases where the government has only trade instruments at hand.
How Fiscal (Mis)-Management May Impede Trade Reform: Lessons From an Intertemporal, Multi-Sector General Equilibrium Model for Turkey
Creators: name: Diao, Xinshen
name: Roe, Terry L.
name: Yeldan, A. Erinc
name: Diao, Xinshen
name: Roe, Terry L.
name: Yeldan, A. Erinc
Publisher: name: Unknown
Year: 1998
Subjects: International Relations/Trade

description: We utilize a multi-sector general equilibrium model based on intertemporally optimizing agents to study issues of trade liberalization and fiscal adjustments in the context of the Turkish economy. A key feature of the model is its explicit recognition of the distortionary consequences of excessive borrowing requirements of the public sector through increased domestic interest costs. The model results suggest that the postponement of adjustment to growing public debt and fiscal imbalances could be detrimental; and that in the absence of coordinated fiscal reforms, the welfare gains expected from trade liberalization may significantly be negated.
Evidence of disc reflection in the X-ray spectrum of the neutron star low mass X-ray binary 4U 1636-536
Creators: name: Mondal, Aditya S.
name: Raychaudhuri, B.
name: Dewangan, G. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a broadband spectral analysis of the atoll source 4U~1636-536 observed for $\sim92$ ks with \nustar{}. The source was found to be in a low-luminosity state during this observation with $3-79 \kev{}$ X-ray luminosity of $L_{3-79 keV}=(1.03\pm0.01)\times 10^{37}$ ergs/s, assuming a distance of 6 kpc. We have identified and removed twelve type-I X-ray bursts during this observation to study the persistent emission. The continuum is well described by a thermal Comptonization model {\tt nthcomp} with $Γ\sim1.9$, $kT_{e}\sim28 \kev{}$, and $kT_{s}\sim0.9\kev{}$. The \nustar{} data reveal a clear signature of disc reflection, a significantly broad Fe-K emission line (around $5-8\kev{}$), and the corresponding reflection hump (around $15-30\kev{}$). We have modeled the data with two relativistically blurred reflection models. Both families of reflection models prefer truncated inner disc radii prior to the ISCO. We find that the inner disc is truncated with an inner radius of $R_{in}=(3.2-4.7)\;R_{ISCO}$ ($\simeq16-24\,R_{g}\: \text{or}\: 36-54$ km). This inner disc radius suggests that the neutron star magnetic field strength is $B\leq2.0\times10^{9}$ G.
description: 11 pages, 11 figures, 2 Tables, Accepted for publication in MNRAS
Political Economy Perspectives on the 1994 Turkish Economic Crisis: A CGE Modeling Analysis
Creators: name: Yeldan, A. Erinc
name: Yeldan, A. Erinc
Publisher: name: Unknown
Year: 1995
Subjects: Political Economy

description: This paper investigates the role of the deterioration of the Turkish public sector balances in the latter half of the 1980's and the evolution of the economic crisis with the aid of a computable general equilibrium model. The theoretical basis of the model utilized in the paper rests upon the Walrasian and the Structuralist/Keynesian macro foundations. The model recognizes 15 production sectors, 3 socio-economic income groups and a central government; and simulates the production, income distribution, consumption, capital accumulation and foreign trade processes of the national economy within a simultaneous system of algebraic equations. The distinguishing feature of the model is that, it accommodates monopolistic mark-up pricing rules in the industrial sectors, and endogenously solves for capacity utilization and unemployment level through Keynesian mechanisms of effective final demand. The model investigates the evolution of the crisis under three main headings: (i) the role of the financial crisis and the unprecedented deficit in the public sector balances; (ii) the roles of the foreign borrowing strategy of the state and the short term foreign capital inflows on balance of payments and the foreign exchange rate; and (iii) the role of the political-economic relations of income distribution and inflationary processes emanating from real wage increases and non-competitive pricing behavior in the industrial sectors. The general equilibrium results of the model underscore the importance of intra-class relations of income distribution and conflict in the evolution of price movements in the Turkish economy; and suggest that the sources of the crisis lie in the historical role of the administrative interventions of the state towards protection of the capitalist and rural incomes, which would otherwise be squeezed out in favor of wage-labor in the late-1980's.
Stäckel Equivalence of Non-Degenerate Superintegrable Systems, and Invariant Quadrics
Creators: name: Vollmer, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 14H70, 70H06, 30F45

description: A non-degenerate second-order maximally conformally superintegrable system in dimension 2 naturally gives rise to a quadric with position dependent coefficients. It is shown how the system's Stäckel class can be obtained from this associated quadric.The Stäckel class of a second-order maximally conformally superintegrable system is its equivalence class under Stäckel transformations, i.e., under coupling-constant metamorphosis.