cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Predicting time to graduation at a large enrollment American university
Creators: name: Aiken, John M.
name: De Bin, Riccardo
name: Hjorth-Jensen, Morten
name: Caballero, Marcos D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The time it takes a student to graduate with a university degree is mitigated by a variety of factors such as their background, the academic performance at university, and their integration into the social communities of the university they attend. Different universities have different populations, student services, instruction styles, and degree programs, however, they all collect institutional data. This study presents data for 160,933 students attending a large American research university. The data includes performance, enrollment, demographics, and preparation features. Discrete time hazard models for the time-to-graduation are presented in the context of Tinto's Theory of Drop Out. Additionally, a novel machine learning method: gradient boosted trees, is applied and compared to the typical maximum likelihood method. We demonstrate that enrollment factors (such as changing a major) lead to greater increases in model predictive performance of when a student graduates than performance factors (such as grades) or preparation (such as high school GPA).
description: 28 pages, 11 figures
Structural and Magnetic Studies on La2-xDyxCa2xBa2Cu4+2xOz Type Superconducting Oxides
Creators: name: Rayaprol, S.
name: Kundaliya, Darshan C.
name: Thaker, C. M.
name: Kuberkar, D. G.
name: Chakraborty, Keka R.
name: Krishna, P. S. R.
name: Ramanadham, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The La-2125 type La2-xDyxCa2xBa2Cu4+2xOz (0.1 < x < 0.5; LDBO) compounds have been synthesized and studied for their structural and superconducting properties by room temperature neutron diffraction, high field dc magnetization, four-probe resistivity and iodometric double titration. The Rietveld analysis of the neutron diffraction data reveals tetragonal structure for all the samples, which crystallizes into La-123 type tetragonal structure in P4/mmm space group. Iodometric double titrations were performed to determine the oxygen content values and calculate mobile charge carrier (holes) density. The superconducting transition temperatures (Tc) increases from ~ 20 K for x = 0.1 to a maximum of 75 K for x = 0.5. Flux pinning force (Fp) and critical current density (Jc), calculated from the low temperature hysteresis loops, also increases with increasing dopant concentration. The paper presents the studies on structure and superconducting properties of all LDBO compounds in light of the role of calcium in inducing superconductivity in the tetragonal non-superconducting oxide.
description: To appear in J. Phys. Condens. Matter
The Status of the Wave Function in Dynamical Collapse Models
Creators: name: Dowker, Fay
name: Herbauts, Isabelle
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The idea that in dynamical wave function collapse models the wave function is superfluous is investigated. Evidence is presented for the conjecture that, in a model of a field theory on a 1+1 lightcone lattice, knowing the field configuration on the lattice back to some time in the past, allows the wave function or quantum state at the present moment to be calculated, to arbitrary accuracy so long as enough of the past field configuration is known.
description: 35 pages, 11 figures, LaTex, corrected typos, some modifications made. to appear in Found. of Phys. Lett. Vol. 18, Nbr 6, Nov 2005, 499-518
energies-13-00536-v3.pdf
Creators: name: Smith, John
Publisher: name: figshare
Year: 2020
Subjects: subject: 40201 Exploration Geochemistry
subject: FOS: Earth and related environmental sciences
subject: Geology
subject: 40399 Geology not elsewhere classified
subject: 40403 Geophysical Fluid Dynamics
subject: Geophysics

description: MDPI
Have Biotech Seeds Increased Maize Yields?
Creators: name: Xu, Zheng
name: Hennessy, David A.
name: Moschini, GianCarlo
name: Xu, Zheng
name: Hennessy, David A.
name: Moschini, GianCarlo
Publisher: name: Unknown
Year: 2010
Subjects: subject: Crop Production/Industries
subject: Industrial Organization
subject: Research and Development/Tech Change/Emerging Technologies
subject: Biotechnology
subject: Corn Yield
subject: Trend
subject: Regional Effects
subject: Weather
subject: Fertilization.

description: Corn yield is determined by soils, weather, seed used and other technology choices. Global population and per capita income growth trends as well as demand from the energy sector have placed great stress on cropland use. Global cropland acres and/or yield per acre will need to increase. Whether new seed technologies have enhanced corn yield is a controversial issue. We study U.S. county corn yields 1964-2008, controlling for location effects, fertilization technologies and weather. We find evidence that trend yield growth has been fastest in the Central Corn Belt, genetic modification technologies have increased trend yield, and this increase has been largest in the Central Corn Belt.
Morm : a fact-oriented conceptual modeling approach to designing data warehouses and olap applications
Creators: name: Payne, Robert R.
Publisher: name: University of British Columbia
Year: 2009

description: The interest in data warehouses and OLAP applications in recent years is largely due to the promise of improved decision-making made possible by integrating data from numerous different sources. The underlying data structures required to support the analytical requirements of these systems clearly justifies the need for a distinct data modeling approach, particularly at the conceptual level. As a direct response to the inability of conventional data modeling methods to represent multidimensional semantics, multidimensional modeling has emerged and brought with it a variety of new multidimensional concepts. Several models have been proposed to represent these concepts, but a complete and natural approach does not exist that adequately conceptualizes and communicates multidimensional designs to business and technical users alike. To address the fundamental deficiencies and shortcomings of existing models, we propose a fact-oriented approach to conceptual multidimensional modeling. Our approach is a specialization of Object Role Modeling in which we define additional constructs and guidelines to consider multidimensional properties at the conceptual level. We believe our utilization of the fact-oriented paradigm provides us with a conceptual multidimensional model that is more natural and simpler than existing models. To demonstrate its practicality, we apply our approach to a case study and demonstrate how our model can be implemented using existing technologies.
Investigating dark energy experiments with principal components
Creators: name: Crittenden, Robert G.
name: Pogosian, Levon
name: Zhao, Gong-Bo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use a principal component approach to contrast different kinds of probes of dark energy, and to emphasize how an array of probes can work together to constrain an arbitrary equation of state history w(z). We pay particular attention to the role of the priors in assessing the information content of experiments and propose using an explicit prior on the degree of smoothness of w(z) that is independent of the binning scheme. We also show how a figure of merit based on the mean squared error probes the number of new modes constrained by a data set, and use it to examine how informative various experiments will be in constraining the evolution of dark energy.
description: A significantly expanded version with an added PCA for weak lensing, a new detailed discussion of the correlation prior proposed in this work, and a new discussion outlining the differences between the Bayesian and the frequentist approaches to reconstructing w(z). Matches the version accepted to JCAP. 8 pages, 2 figures
Auction Experiments and Simulations of Milk Quota Exchanges
Creators: name: Brümmer, Bernhard
name: Loy, Jens-Peter
name: Requate, Till
name: Brümmer, Bernhard
name: Loy, Jens-Peter
name: Requate, Till
Publisher: name: Unknown
Year: 2010
Subjects: subject: Institutional and Behavioral Economics
subject: Research Methods/ Statistical Methods
subject: Double Auction
subject: Experiment
subject: Milk Quota
subject: Germany

description: Since 2000 Germany has a fairly unique market mechanism to trade milk quotas between dairy farms. The two major features are: (1) a quasi auctioning system that produces excess demands which are covered by state reserves free of charge and (2) a price band is used to exclude high price bids. For both features an experimental design is developed to study their impact in comparison to a regular seller’s sealed bid double auction. Results show that both treatments lead to significant misallocations. These are due the direct impact of regulations and due to an imperfect adjustment of bidding functions towards them. The major goal of the market design to reduce quota prices is reached, however, at significant trade losses.
Four-frequency solution in a magnetohydrodynamic Couette flow as a consequence of azimuthal symmetry breaking
Creators: name: Garcia, Ferran
name: Seilmayer, Martin
name: Giesecke, André
name: Stefani, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 37L20, 76E25

description: The occurrence of magnetohydrodynamic (MHD) quasiperiodic flows with four fundamental frequencies in differentially rotating spherical geometry is understood in terms of a sequence of bifurcations breaking the azimuthal symmetry of the flow as the applied magnetic field strength is varied. These flows originate from unstable periodic and quasiperiodic states with broken equatorial symmetry but having four-fold azimuthal symmetry. A posterior bifurcation gives rise to two-fold symmetric quasiperiodic states, with three fundamental frequencies, and a further bifurcation to a four-frequency quasiperiodic state which has lost all the spatial symmetries. This bifurcation scenario may be favoured when differential rotation is increased and periodic flows with $m$-fold azimuthal symmetry, $m$ being product of several prime numbers, emerge at sufficiently large magnetic field.
description: 8 pages, 7 figures, published in Phys. Rev. Let
The structures of a class of $Z$-local rings
Creators: name: Wu, Tongsuo
name: Lu, Dancheng
Publisher: name: arXiv
Year: 2005
Subjects: subject: Rings and Algebras (math.RA)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 16

description: A local ring $R$ is called $Z$-local if $J(R) = Z(R)$ and $J(R)^2 = 0$. In this paper the structures of a class of $Z$-local rings are determined.
description: 7 pages
NDE 4.0: Digital Twin, Semantics, Interfaces, Networking, Feedback, New Markets and Integration into the Industrial Internet of Things
Creators: name: Vrana, Johannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: The industrial revolution is divided into three phases by historians: The invention of the steam engine (mechanization), electricity (mass production) and the microelectric revolution (automation). There was a similar development in non-destructive evaluation: tools such as lenses or stethoscopes allowed the human senses to be sharpened, the conversion of waves makes the invisible visible and thus offers a "look" into the components and finally automation, digitization and reconstruction. During the entire industrial development NDE was decisively responsible for the quality and thus for the success of the manufactured goods. Industry is now talking about a fourth revolution: The informatization, digitization and networking of industrial production. As always, NDE will be critical to the success of this fourth revolution by providing the database needed for feedback in a networked production environment. For NDE, this will lead to change. The test results must be made available to a networked production environment in such a way that they can be evaluated for feedback loops, the testability must be considered in the design and the reliability of the test statements will become increasingly important. This publication presents first an orientation to NDE 4.0, including the development of Industry and NDE, a definition of its revolutions, a collection of several current-day challenges of NDE, and a discussion whether and how those can be solved with NDE 4.0. Second this publication presents concepts on how NDE can be integrated into Industry 4.0 landscapes: The Reference Architecture Model Industry 4.0 (RAMI 4.0) shows the complete Industry 4.0 space and allows every Industry 4.0 standard and interface to be located. The Industry 4.0 Asset Administration Shell (AAS) implements the digital twin and is the interface between Industry 4.0 communication and the physical device. The ...
description: 24 pages, 12 figures
energies-12-00197.pdf
Creators: name: Smith, John
Publisher: name: figshare
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geophysics
subject: 50305 Soil Physics
subject: FOS: Agriculture, forestry and fisheries
subject: 40407 Seismology and Seismic Exploration

description: MDPI
AGROINDUSTRIALIZATION THROUGH INSTITUTIONAL INNOVATION: TRANSACTIONS COSTS, COOPERATIVES AND MILK-MARKET DEVELOPMENT IN THE ETHIOPIAN HIGHLANDS
Creators: name: Holloway, Garth J.
name: Nicholson, Charles F.
name: Delgado, Christopher L.
name: Holloway, Garth J.
name: Nicholson, Charles F.
name: Delgado, Christopher L.
Publisher: name: Unknown
Year: 1999
Subjects: Agribusiness

description: Some small-holders are able to generate reliable and substantial income flows through small-scale dairy production for the local market; for others, a set of unique transactions costs hinders participation. Cooperative selling institutions are potential catalysts for mitigating these costs, stimulating entry into the market, and precipitating growth in rural communities. Trends in cooperative organization in East-African dairy are evaluated. Empirical work focuses on alternative techniques for effecting participation among a representative sample of periurban milk producers in the Ethiopian highlands. The techniques considered are a modern production practice (cross-bred cow use), a traditional production practice (indigenous-cow use), three intellectual-capital-forming variables (experience, education, extension), and the provision of infrastructure (as measured by time to transport milk to market). A Tobit analysis of marketable surplus generates precise estimates of non-participants’ ‘distances’ to market and their reservation levels of the covariates—measures of the inputs necessary to sustain and enhance the market. Policy implications focus on the availability of cross-bred stock and the level of market infrastructure, both of which have marked effects on participation, the velocity of transactions in the local community and, inevitably, the social returns to agroindustrialization.
Does Nitrogen, Phosphorus, and/or Silica Limit Phytoplankton Growth and Community Composition in the lower Columbia River?
Creators: name: Wong Rodriguez, Bianca  B.
Publisher: name: Washington State University
Year: 2024
Subjects: Phytoplankton
nitrate
phosphate
silicate
growth
community
lower Columbia River
Stephanodiscus

description: Phytoplankton communities play an essential role in aquatic ecosystems, contributing to primary production and influencing food webs. The goal of this research was to investigate whether major nutrients (nitrate, phosphate, and silicate) limit phytoplankton community and growth in the lower Columbia River (CR). From May – September 2021, we conducted a series of 5-day incubation experiments using surface water samples collected from the Washougal dock in Washougal, WA, USA, with nitrate, phosphate, and silicate added in separate treatments. Our results showed consistent seasonal variations in ambient surface temperature, nutrient concentrations, and chlorophyll a levels in the lower CR. In our incubation experiments, we found significant increases in chlorophyll a concentrations with the addition of silicate during June and July, with a significant effect on the diatom assemblage on Day 5 in June, suggesting silicate limitation of diatoms during late spring in the lower CR. We observed a significant shift in the relative biomass proportion of diatom genera during June in response to the addition of silicate. Specifically, the diatom community transitioned from a mixed assemblage dominated by
description: Stephanodiscus. This increase in Stephanodiscus biomass could have broader implications for the diatom community in the lower Columbia River. When silicate is not limiting, the dominance of Stephanodiscus may result in a more nutritious phytoplankton community for higher trophic levels, as this genus is particularly carbon-rich. Our study contributes to the expanding understanding of how nitrate, phosphate, and silicate influences phytoplankton growth and community composition in the Columbia River, with important implications for food web dynamics.
title: Der „deviante“ Körper: die Verhandlung des weiblichen Körpers in alltäglichen Kleidungspraktiken medialer Selbstinszenierung
Creators: name: Hahmann, Julia
Publisher: name: Humboldt-Universität zu Berlin
Year: 2018
Subjects: subject: Deviante Körper
subject: Fashion-Blogs
subject: Identität
subject: Kleidung
subject: Nähen
subject: Praktiken des Kleidens
subject: ddc:502

description: Kleidung kann als Material zur Identitätskonstruktion verstanden werden, das anhand der Kenntnis impliziter wie expliziter Regeln situationsadäquat zur Inszenierung des erfolgreichen Subjekts eingesetzt wird. Dem devianten Körper wird der Zugang zu trendbewusster Kleidung limitiert und somit auch die Identitätskonstruktion als „fashionable persona“ erschwert. Anhand einer inhaltsanalytischen Untersuchung von Blog-Postings des Curvy Sewing Collective (CSC) und Selbstpräsentationen der sich als kurvig oder fett bezeichnenden Autorinnen können die Auseinandersetzung mit Kleidung als Material und der Praxis des Ankleidens als an einer sozialen Umwelt ausgerichteten Form der Optimierung des eigenen Körpers nachgezeichnet werden. Im Zusammenhang mit der Gemeinschaft des CSC entwickeln die untersuchten Subjekte Technologien des Selbst, die es erlauben, sich trotz wahrgenommener Devianz sozial akzeptabel zu kleiden und eine erfolgreiche Identitätskonstruktion als attraktive, modebewusste Frau zu unterstützen. Obgleich die dargestellten Attraktivitätsnormen Vorstellungen von normativer Weiblichkeit reproduzieren, ermöglicht das Kollektiv so individuelles Empowerment für die Teilnehmerinnen.
Phase transition of AdS black holes in 4D EGB gravity coupled to nonlinear electrodynamics
Creators: name: Ghosh, Sushant G.
name: Singh, Dharm Veer
name: Kumar, Rahul
name: Maharaj, Sunil D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Einstein-Gauss-Bonnet (EGB) gravity is an outcome of quadratic curvature corrections to the Einstein-Hilbert gravity action in the form of a Gauss-Bonnet (GB) term in $ D > 4$ dimensions and EGB gravity is topologically invariant in $4D$. Recently several ways have been proposed for regularizing, a $ D \to 4 $ limit of EGB, for nontrivial gravitational dynamics in $ 4D $. Motivated by the importance of anti-de Sitter gravity/conformal field theory correspondence (AdS/CFT), we analyze black holes with AdS asymptotic to regularized $4D$ EGB gravity coupled to the nonlinear electrodynamics (NED) field. For a static spherically symmetric \textit{ansatz} the field equations are solved exactly, using two different approaches, for a NED Lagrangian to obtain an identical solution$-$namely NED charged AdS black holes in $4D$ EGB gravity which retains several known solutions. Owing to the NED charge corrected EGB black holes, the thermodynamic quantities are also modified, and the entropy does not obey the usual area law. We calculate the heat capacity and Helmholtz free energy, in terms of horizon radii, to investigate both local and global thermodynamic stability of black holes. We observe a secondary Hawking-Page transition between the smaller thermally favoured black hole and thermal AdS space. Our results show that the behaviour of Hawking's evaporation abruptly halts at shorter radii regime such that the black holes do have a thermodynamically stable remnant with vanishing temperature.
description: 16 pages, 9 figures and 1 table. Accepted in the Annals of Physics
Non-equilibrium attractor in high-temperature QCD plasmas
Creators: name: Almaalol, Dekrayat
name: Kurkela, Aleksi
name: Strickland, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We establish the existence of a far-from-equilibrium attractor in weakly-coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the energy-momentum tensor to the detailed form of the one-particle distribution function. Based on our results, we assess different procedures for reconstructing the full one-particle distribution function from the energy-momentum tensor along the attractor and discuss implications for the freeze-out procedure used in the phenomenological analysis of ultra-relativistic nuclear collisions.
description: 10 pages 5 figures
title: Die Kleidung von Künstlerinnen und ihre Bedeutung für die Mode
Creators: name: Leutner, Petra
Publisher: name: Humboldt-Universität zu Berlin
Year: 2018
Subjects: subject: Habitus
subject: Kleidung
subject: Künstlerinnen
subject: Mode
subject: Patriarchale Muster
subject: Selbstinszenierung
subject: ddc:502

description: Der Beitrag zeigt, dass der Habitus von KünstlerInnen impliziert, Individualität als künstlerische Selbstbekräftigung zu inszenieren, wobei Kleidung eine wichtige Rolle spielt. Eine These lautet, dass sich dies bei Künstlerinnen zunächst anders ausnimmt als bei Künstlern, weil die Tradition schöpferischer Hervorbringung männlich dominiert ist. An Beispielen wird verdeutlicht, dass von Künstlerinnenkleidern wichtige Impulse für die Mode ausgehen können. Gegenstand der Recherche und Analyse sind Selbstzeugnisse und Werke von Künstlerinnen, Fotografien, Modekollektionen und Sekundärliteratur. Aussagekräftige Einzelfälle werden beleuchtet, wobei der systematische Aspekt gegenüber dem historischen im Vordergrund steht. Es stellt sich heraus, dass die vestimentären Inszenierungen von KünstlerInnen der professionellen Selbstermächtigung dienen. Da diese Selbstermächtigung den Künstlerinnen lange Zeit verwehrt war, wurden spezielle Formen der Appropriation entwickelt. In der Gegenwart lassen sich allerdings vielfältige Nachwirkungen von KünstlerInnenkleidern auf die Mode erkennen.
Prospects of mass measurements for neutral MSSM Higgs bosons in the intense-coupling regime at a Linear Collider
Creators: name: Boos, E.
name: Bunichev, V.
name: Djouadi, A.
name: Schreiber, H. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the prospects for detecting the three neutral Higgs bosons of the Minimal Supersymmetric extension of the Standard Model in the intense-coupling regime at e+e- colliders. Due to the small mass differences between the Higgs states in this regime and their relative large total decay widths, the discrimination between the particles is challenging at the LHC and in some cases even impossible. We propose to use the missing mass technique in the Higgs-strahlung process in e+e- collisions to distinguish between the two CP-even Higgs eigenstates h and H, relying on their b b-bar decay in the b,b-bar,l+,l- event sample. Ah and AH associated production is then studied in the 4b-jet event sample to probe the CP-odd A boson. At collider energies sqrt(s) = 300 GeV and an integrated luminosity of 500 fb-1, accuracies in the mass measurement of the CP-even Higgs bosons are expected to range from 100 to 300 MeV, while for the CP-odd A boson, accuracies of less than 500 MeV can be obtained.
description: 12 pages, 15 Postscript figures
Proposal for a territorial assessment of the effects of agricultural policies with a georeferred mathematical programming model: a case study
Creators: name: Scozzafava, Gabriele
name: Casini, Leonardo
name: Scozzafava, Gabriele
name: Casini, Leonardo
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Positive mathematical programming (PMP)
subject: Geographic information system (GIS)
subject: Territorial approach
subject: Common agricultural policy (CAP).

description: Over the past fifteen years, the common agricultural policy (CAP) is profoundly changed under the pressure of European society and economic trends. The reforms of 2003-2004 marked a new phase in this path. This process continued with the reforms of the sugar (2006) and fruit and vegetables(2007) and is still ongoing with the recent proposals to reform the wine sector. The dynamics of consolidation, evaluation and redirection of the legislative measures adopted are very important and topical in view of the definition of the common agricultural policy. These issues on the political side emphasize the need for policy makers to have evaluative instruments witch can analyze both the effects on farmers behaviour and the effects generated in the territory. Using instrument that measures and localises the likely effects of agricultural policies, as a matter of fact, allows a correct and comprehensive analysis of actions taken, with the aim of bringing any corrections and adjustments to particular situation. The present work aims to implement and to test in a case study an evaluation instrument based on the integration of two different methodologies: the mathematical programming and the geographic information system. With this research we want to propose a possible method to study at the same time the behaviour of farmers and the localization of their choices under different political conditions. Farmers behaviour has been studied through the implementation of a positive mathematical programming (PMP) model. The construction of a georeferred database made possible to consider the spatial characteristics as variables directly involved in the process of mathematics optimization. Therefore, the geographic information system was used not only to locate the effects of policies, but also to constrain the mathematical model. The proposed model was applied in a rural area in the province of Florence, the Mugello. Through the comparison of different policy scenarios were identified and located the main effects induced by the mid term reform on soil, on livestock and on farms economic performance. Results obtained show how Cap reform induced a reallocation of farms resources and that it did not lead to the feared abandonment of primary activity. In addition, the elaboration of results provide important informations to decision public in order to develop monitoring actions in those areas which show potential problems. This model, for its flexibility and ductility, may constitute the basis for simulate and analyze the potential effects induced by the proposals, for example, in the health check of the CAP.
Task-oriented Motion Mapping on Robots of Various Configuration using Body Role Division
Creators: name: Sasabuchi, Kazuhiro
name: Wake, Naoki
name: Ikeuchi, Katsushi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Many works in robot teaching either focus only on teaching task knowledge, such as geometric constraints, or motion knowledge, such as the motion for accomplishing a task. However, to effectively teach a complex task sequence to a robot, it is important to take advantage of both task and motion knowledge. The task knowledge provides the goals of each individual task within the sequence and reduces the number of required human demonstrations, whereas the motion knowledge contain the task-to-task constraints that would otherwise require expert knowledge to model the problem. In this paper, we propose a body role division approach that combines both types of knowledge using a single human demonstration. The method is inspired by facts on human body motion and uses a body structural analogy to decompose a robot's body configuration into different roles: body parts that are dominant for imitating the human motion and body parts that are substitutional for adjusting the imitation with respect to the task knowledge. Our results show that our method scales to robots of different number of arm links, guides a robot's configuration to one that achieves an upcoming task, and is potentially beneficial for teaching a range of task sequences.
description: 8 pages, 10 figures
Employment impacts of the Common Agricultural Policy in Eastern Germany – A regional panel data approach
Creators: name: Petrick, Martin
name: Zier, Patrick
name: Petrick, Martin
name: Zier, Patrick
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Labor and Human Capital
subject: Impact analysis
subject: Agricultural employment
subject: Common Agricultural Policy

description: Politicians and farm lobbyists frequently use the argument that agricultural policy is necessary to safeguard jobs in agriculture. We explore whether this is true by conducting an econometric ex-post evaluation of the European Union’s Common Agricultural Policy in the three East German States Brandenburg, Saxony, and Saxony-Anhalt. Whereas previous studies have employed descriptive statistics or qualitative methods and have looked at single policy instruments in isolation, we apply a difference-in-difference estimator to analyse the employment effects of the entire portfolio of CAP measures simultaneously. Based on panel data at the county level, we find that direct payments for livestock, investment aid and transfers to less favoured areas had a zero marginal employment effect. Increases in direct area payments on average led to labour shedding, as simultaneous decoupling made transfer payments independent of factor allocation. Spending on modern technologies in processing and marketing also led to job losses in agriculture. Agro-environmental measures, on the other hand, kept labour intensive technologies in production or induced them. In light of the recent “health check” agreements on additional modulation, this analysis calls into question whether an expansion of existing second pillar measures is a reasonable way to use the modulated funds.
Running threads : a critical discourse analysis of B.C.’s sexuality education curricula
Creators: name: Shearer, Andrea Lynn
Publisher: name: University of British Columbia
Year: 2009

description: Sexuality education is a contested arena in which multiple sexual discourses compete for dominance. These discourses have the potential to empower or marginalize students (and teachers) based on constructed social identity categories. The purpose of this study was twofold: to determine which sexual discourses are reflected in British Columbia's secondary-level instructional resource packages (IRPs) that address sexuality issues, and a selection of their recommended learning resources; and to explore how the sexual discourses inherent in these documents construct or perpetuate social inequalities through the positioning of sexual subjects according to gender, sexual orientation, age, race, class and physical (dis)ability. The selected IRPs were Career and Personal Planning, 8-12; Science 8- 10; Biology, 11-12; Home Economics, 8-10; and Home Economics 11-12. The selected recommended learning resources were AIDS: Allie's Story (video); Biology: The Unity and Diversity of Life, Eighth Edition (textbook); and The Living Family: A Canadian Perspective (textbook). The relevant curricula were subjected to a critical discourse analysis informed by both critical feminism and a pragmatic, Foucauldian theory of discourse. This analysis was carried out using sexual discourse categories developed by Alexander McKay (1998) and a set of open-ended questions derived from several sources. The results of the analysis suggest that the selected curricula and recommended learning resources adhere for the most part to Romanticist and/or Progressive sexual discourses, employing sub-discourses of danger, control and individual responsibility. Related to these discourses is the texts' marginalization of the reader or viewer, primarily on the basis of sexual orientation and gender, but also significantly on the basis of age, race, class and physical disability. It is argued that the documents examined have the potential for perpetuating stereotypical identity constructions and social inequalities through the lens of sexuality. Recommendations for future curriculum development are included.
Effect of Plasticizer Percentage on Thermal Properties of Plasticised PVC
Creators: name: I.Al-Mosawi, Ali
name: Marossy, Kálmán
name: Kónya, Csaba
Publisher: name: figshare
Year: 2020
Subjects: Additive Manufacturing

description: The effect of DOP plasticizer percentage on limiting oxygen index and thermal stability of plasticised PVC was investigated in this paper. DOP was added PVC with various quantities (20, 30, and 50) pphr. LOI and thermal stability instruments used for estimating LOI and thermal stability of plasticised PVC as a function to DOP percentage. The results showed that the thermal stability of plasticised PVC was improved by increasing DOP percentage, but in the same time has a reverse behavior where the LOI decreases as the DOP percentage increases.
Spectroscopic monitoring of the transition phase in nova V4745 Sgr
Creators: name: Csak, B.
name: Kiss, L. L.
name: Retter, A.
name: Jacob, A.
name: Kaspi, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a spectroscopic monitoring of the transient nova V4745 Sagittarii (Nova Sgr 2003 #1) covering ten months after the discovery. During this period the light curve showed well expressed transient phase in the form of six rebrightenings, and the presented dataset is one of the best spectroscopic coverages of a classical nova during the transition phase. Low- and medium-resolution spectra revealed that the majority of spectral lines switched back to strong P-Cyg profiles during the mini-outbursts, similar to the spectra just after the major eruption. We interpret the observed phenomena as evidence for ``echo-outbursts'' resulting in episodes of secondary mass-ejections and propose that the transition phase in classical novae is driven by repetitive instabilities of the hydrogen shell burning on the surface of the white dwarf. From the available light curve data we estimate the absolute magnitude of the system of about -8.3 +/- 0.5 mag. All spectrophotometric pieces of evidence point toward a very low (E(B-V) < 0.1) interstellar reddening, leading to a rough distance estimate of V4745 Sgr (9 kpc < d < 19 kpc).
description: 8 pages, 10 figures, A&A accepted
Numerical analysis of wave propagation across Solid-Fluid interface with Fluid-Structure interaction in circular tube
Creators: name: Kojima, Tomohisa
name: Inaba, Kazuaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Fluid-structure interaction (FSI) and wave propagation in engineering structures can cause severe damage to piping systems or fluid machines, inducing serious accidents. In these phenomena, the mechanism of structural damage depends on the wave propagation across the fluid-solid interface. Previous studies reported that disagreements between the induced pressure value on the solid-fluid movable interface and the value predicted by the classical one-dimensional theory arose from the effects of two-dimensional wave propagation. To address this problem, in this study, a two-dimensional axisymmetric simulation of wave propagation across the solid-fluid interface with FSI was conducted. The simulation was performed using ANSYS Autodyn with a Lagrangian solver for solids and Eulerian solver for water. The results showed that radial wave propagation caused by the dynamic effect of the tube and water's inertia affected the peak pressure on the solid-fluid interface. The peak pressure was attenuated near the tube wall because of the inertial effect of the tube and fluid expansion. By calculating the mean pressure and axial stress to compare the simulated peak pressure with that from one-dimensional acoustic theory, it was indicated that the transition region for transmitted pressure was located immediately after the solid-fluid interface. In this region, the transmitted peak pressure may exceed the value predicted by one-dimensional acoustic theory. The transition region was oriented in the axial direction from the interface. In addition, prediction of the transmitted peak pressure with one-dimensional acoustic theory was suggested via normal wave speed in the unconfined fluid from a safety engineering perspective, although the circumferential stress generated in the tube enclosing fluid can be sufficiently accurately predicted using the same theory with the Korteweg speed.
Determination of Optimal Environmental Flow Acquisition in Kor Basin, Doroudzan Dam
Creators: name: Asad Falsafi Zadeh, Neda
name: Sabouhi Sabouni, Mahmood
name: Asad Falsafi Zadeh, Neda
name: Sabouhi Sabouni, Mahmood
Publisher: name: Unknown
Year: 2009
Subjects: subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: Production Economics
subject: Risk and Uncertainty
subject: Expected Net Income
subject: Hydrology
subject: Non-Linear Programming Model
subject: Deficit Irrigation

description: In current study, an irrigation examination and acquisition of environmental water in Kor River fields, that is dominated from Doroudzan dam to Bakhtegan Lake, was done by an integrated economy-environmental model. The model was considered by economic, hydrologic and agronomic components. In the economic component, an optimal harvesting of water was done using non-linear programming in two scenarios; with and without environmental water constraint. Solutions from simulation of environmental data in the hydrologic component, was used as initial data in the economic component. In the agronomic component, actual crop yield in wet, normal and dry years was determined using the relationship between crop yield and irrigation water amount. Results showed that, the current allocation pattern of surface water in wet, normal and dry years in Kor River basin is different from the optimal pattern. Water pricing without considering demand and supply and the absence of water markets in the region can be the causes of this difference. Additionally, optimal cropping pattern of the region was determined by the model that can be taken into account for preservation of surface water resources.
An Examination of the Market Structure of the U.S. Produce Industry
Creators: name: Epperson, James E.
name: Epperson, James E.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Marketing
subject: FOS: Economics and business

description: Recent literature, largely from the U.S. Department of Agriculture, Economic Research Service, indicates that substantial changes have occurred in the produce industry in recent years. With the rise of retail mass merchandisers and increased concentration in the retail food industry, the procurement power of these large firms reportedly has also increased. With direct buying and contracting, market intermediaries such as brokers and wholesalers allegedly are being bypassed. As a result, these market intermediaries ostensibly are also consolidating becoming fewer and larger with increased emphasis on servicing the food service industry. However, the findings of this study indicate that there is no convincing evidence that the market structure of the U.S. produce industry has markedly changed since the early 1980s. While supermarket concentration has increased noticeably, the same cannot be said for produce market intermediaries such as brokers and wholesalers.
Directional self-locomotion of active droplets enabled by nematic environment
Creators: name: Rajabi, Mojtaba
name: Baza, Hend
name: Turiv, Taras
name: Lavrentovich, Oleg D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Active matter comprised of self-propelled interacting units holds a major promise for extraction of useful work from its seemingly chaotic out-of-equilibrium dynamics. Streamlining active matter to produce work is especially important at microscale, where the viscous forces prevail over inertia and the useful modes of transport require very specific non-reciprocal type of motion. Here we report that microscopic active droplets representing aqueous dispersions of swimming bacteria Bacillus subtilis show unidirectional propulsion when placed in an inactive nematic medium. Random motion of bacteria inside the droplet is rectified into a directional self-locomotion of the droplet by the polar director structure that the droplet itself creates in the surrounding nematic through anisotropic molecular interactions at its surface. Droplets without swimming bacteria show no net displacement. The trajectory of the active droplet can be predesigned as rectilinear or curvilinear by patterning the molecular orientation of the nematic medium. The effect demonstrates that swimming at microscale can be achieved at the expense of broken spatial symmetry of the medium; it can be used in development of micromachines.
description: Mojtaba Rajabi and Hend Baza contributed equally to this work
Reconstruction of condensed magnetoexciton droplet in a trap in strong magnetic fields
Creators: name: Yang, S. -R. Eric
name: Yeo, J.
name: Han, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate theoretically the Bose-Einstein condensation of trapped magnetoexcitons in a two-layered system with one layer containing electrons and the other layer containing holes. We have studied the spatial variations of the condensate density in the droplet of electrons and holes. We find that the shape of the electron and hole densities may change due to the competition between repulsive electron-electron/hole-hole interaction and confinement potential of the trap. Our mean field calculations show that when the confinement strength is strong enough the condensate density is peaked at the edge of the droplet, and as the confinement strength weakens the condensate density displays one inner peak and another peak at the edge. For much weaker confinement potential the condensate density may display one broad peak.
description: 8 pages, 9 figures, accepted for publication in PRB
Financial Sector Reforms and Currency Crisis: The Indonesian Experience
Creators: name: Shakur, Shamim
name: Obben, James
name: Nugroho, Agus Eko
name: Shakur, Shamim
name: Obben, James
name: Nugroho, Agus Eko
Publisher: name: Unknown
Year: 2005
Subjects: subject: Financial Economics
subject: Currency Crisis
subject: Indonesia
subject: Exchange Rate

description: The theory of exchange rate determination clearly links a depreciating currency to a deteriorating trade balance, interest differential and related economic fundamentals. Empirical testing carried out routinely confirms these relationships in “normal” times as currencies constantly align themselves to find their places in the global marketplace. When depreciation reaches crisis proportions, they are not always caused by a proportional deterioration in economic fundamentals. Random activities like speculative attacks are prompted by perceived problems in the banking sector as well as the contagion effect, leading to a currency crisis. Using pre crisis data and focusing on the Indonesian rupiah, this view is confirmed in the research.
Nonadiabatic Modal Dynamics Around a Third-order Exceptional Point in a planar waveguide
Creators: name: Dey, Sibnath
name: Laha, Arnab
name: Ghosh, Somnath
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Dynamical parametric encirclement around an Exceptional Point (EP) and corresponding asymmetric state transfer phenomenon have attracted considerable attention recently. In this context, beyond the reported time-asymmetric state dynamics around a second-order EP (EP2) in a two-level system, the investigation of similar state dynamics around a third-order EP (EP3) in a multi-state system, having comparably complex topology with rich physics, is lacking. Here, we report a fabrication-feasible few-mode planar optical waveguide with a customized gain-loss profile and investigate the effect of dynamical parametric encirclement around an EP3 in the presence of multiple EP2s. The cube-root branch point behavior is established in terms of successive switching between the propagation constants of the coupled modes following an adiabatic encirclement process. Now, while considering the dynamical encirclement process, the breakdown in system adiabaticity around an EP3 leads to a unique light dynamics, where we have shown the breakdown of chirality of the device.
description: 11 pages, 5 figures
Choice of Observing Schedules for Astrometric Planet Searches
Creators: name: Ford, Eric B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Space Interferometry Mission (SIM) will make precise astrometric measurements that can be used to detect planets around nearby stars. Since observational time will be extremely valuable, it is important to consider how the choice of the observing schedule influences the efficiency of SIM planet searches. We have conducted Monte Carlo simulations of astrometric observations to understand the effects of different scheduling algorithms. We find that the efficiency of planet searches is relatively insensitive to the observing schedule for most reasonable observing schedules.
description: 29 pages, 9 figures, 2 tables, to be published in PASP
title: 2014 Faculty Conference: emerging national concerns for higher education
Creators: name: Parker, Terence E.
Publisher: name: Mountain Scholar
Year: 2007
Subjects: enrollment trends
tuition increase
capital infastructure
provost
faculty conference
performance based funding
debt
business practices
compliance

description: This presentation gives an overview of the current challenges to higher education, including the decline of state funding and the nationwide rise in tuition; shaping forces of the future such as accountability, enrollment competition, changing business practices, and compliance concerns; and the ways in which CSM is poised to respond to these challenges and forces as part of the ongoing effort to execute the long-term strategic plan.