cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The influence of grain rotation on the structure of dust aggregates
Creators: name: Paszun, D.
name: Dominik, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the effect of rotation during the collision between dust aggregates, in order to address a mismatch between previous model calculations of Brownian motion driven aggregation and experiments. We show that rotation during the collision does influence the shape and internal structure of the aggregates formed. The effect is limited in the ballistic regime when aggregates can be considered to move on straight lines during a collision. However, if the stopping length of an aggregate becomes smaller than its physical size, extremely elongated aggregates can be produced. We show that this effect may have played a role in the inner regions of the solar nebula where densities were high.
description: 15 pages, 6 figures, accepted for publication in Icarus, typos corrected
Lightweight broadband antennas for UAV based GPR sensors
Creators: name: Burr, Ralf
name: Schartel, Markus
name: Mayer, Winfried
name: Walter, Thomas
name: Waldschmidt, Christian
Publisher: name: Universität Ulm
Year: 2018
Subjects: subject: DDC 620 / Engineering & allied operations
subject: Ground penetrating radar
subject: Antennas, Dipole
subject: Drohne (Flugkörper)
subject: Elektromagnetische Reflexionsmethode

description: In this contribution two different types of broadband antennas namely a logarithmic-periodic dipole antenna (LPDA) and a transversal electromagnetic (TEM) horn antenna for ground penetrating synthetic aperture radar sensors are presented. These antennas are designed to be mounted on an unmanned aircraft vehicle (UAV). The antennas are evaluated in terms of their matching, radiation pattern pulse response and weight. Finally, an integration example of one of these antennas is shown on an UAV.
Nodal Pricing and Transmission Losses: An Application to a Hydroelectric Power System
Creators: name: Bernard, Jean-Thomas
name: Guertin, Chantal
name: Bernard, Jean-Thomas
name: Guertin, Chantal
Publisher: name: Unknown
Year: 2002
Subjects: subject: Resource /Energy Economics and Policy
subject: electricity
subject: transmission pricing
subject: hydropower

description: Since January 1, 1997, the wholesale electricity market in the United States has been open to competition. To satisfy the reciprocity requirements imposed by the Federal Energy Regulatory Commission, Hydro-Quebec, a Canadian utility, made its transmission grid accessible to third parties. Under the current regulation, transmission losses are taken into account through a single, constant rate; location and time of use play no role. Hydro-Quebec generates most of its electricity from hydro resources. Long high-voltage power lines link production in the North to consumption centers in the South, where there are interconnections with neighboring areas. We develop an optimization model that allows us to calculate nodal prices on the basis of the opportunity costs of exports. Hydro resources and interconnections with neighbors tend to equalize nodal prices between peak and off-peak periods. However, transmission losses give rise to large price differences between the northern and the southern regions. That the price differences are not taken into account under the current regulation has implications for siting new power stations.
Universal properties of the near-horizon geometry
Creators: name: Murk, Sebastian
name: Terno, Daniel R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive universal properties of the near-horizon geometry of spherically symmetric black holes that follow from the observability of a regular apparent horizon. Only two types of solutions are admissible. After reviewing their properties we show that only a special form of the solutions of the second type is consistent. We describe how these results extend to modified theories of gravity, including Einstein--Cartan theories. Then we describe the unique black hole formation scenario that necessarily involves both types of solutions. The generalized surface gravity is infinite at the apparent horizon. This feature and comparison of the required energy and timescales with the known semiclassical results suggest that the observed astrophysical black holes are horizonless ultra-compact objects, and the presence of a horizon is associated with currently unknown physics.
description: 7 pages. Published version. Comments welcome!
CentraleSupélec. Nouveau cursus. Cahier des charges
Creators: name: Cagnol, John
name: Biausser, Hervé
Publisher: name: Zenodo
Year: 2016
Subjects: education
ingenieur
Ecole Centrale Paris
Supélec
compétences

description: Dans un contexte de globalisation de l’enseignement supérieur où la compétition s’intensifie entre les meilleures institutions mondiales, CentraleSupélec s’est donné une grande ambition: devenir une institution de référence à l’échelle mondiale pour ses quatre activités de base: -la formation d’ingénieurs généralistes de haut niveau, -les autres formations professionnalisantes (masters, mastères spécialisés et formation continue), -la formation à et par la recherche, s’appuyant sur son école doctorale, -la recherche en Sciences de l’Ingénierie et des Systèmes. Pour atteindre cette ambition, il est essentiel de proposer un cursus d’ingénieur du meilleur niveau. Le cursus, emblématique par nature, est en effet le fondement d’une grande école d’ingénieurs, dont la mission première est de mettre ses diplômés sur des trajectoires de réussite,au service de la société.
Read This Paper Even Later: Procrastination with Time-Inconsistent Preferences
Creators: name: Fischer, Carolyn
name: Fischer, Carolyn
Publisher: name: Unknown
Year: 1999
Subjects: subject: Institutional and Behavioral Economics
subject: procrastination
subject: natural resource economics
subject: hyperbolic discounting
subject: differential discounting

description: Salience costs, along with imperfect foresight, have been used in previous studies to explain procrastination of a one-time task. A companion to this paper, "Read This Paper Later: Procrastination with Time-Consistent Preferences" analyzes the extent to which procrastination of a divisible task is compatible with rational behavior. While the fully rational model explains key qualitative observations, it requires an extremely high rate of time preference or elasticity of intertemporal substitution to generate serious procrastination and cannot explain undesired procrastination at all. This paper investigates the extent to which dynamically inconsistent preferences can better explain such impatience and address the issue of self-control failures. Two types of discount functions are presented, motivated by previous salience cost explanations. Hyperbolic discounting corresponds to a salient present; short-term discount rates are higher than long-term ones. A new form, differential discounting, arises from salient costs; utility from leisure is discounted at a higher rate than rewards from work. The model of a divisible task with delayed rewards generates clear predictions that can be used to distinguish between types. When workers have rational expectations about future behavior, both regimes induce self-control problems and sharper procrastination than standard exponential discounting. However, they have different implications for policies to induce work, reduce procrastination, and improve welfare.
The Impact of Technology in the Classroom A Study of Teaching Strategies on the Gifted and Talented Learner
Creators: name: Helms, Ashley
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: subject: Education -- Research papers (Graduate)

description: This study was designed to determine whether technology based teaching strategies impacted student achievement for students enrolled in a gifted and talented 7th grade language arts class. Students were randomly divided to one of two groups: treatment or control. The treatment group completed a character analysis assignment using a class wiki website. The control group completed the same assignment without the use of technology. The control group answered their questions on paper. The literature used was a play that was read with both groups together as a class. After each scene of a play was discussed, students were divided according to their group to complete the analysis of the characters. The assessment called for students to write a monologue from the point of view of a character in the play. They were permitted to use the any work completed for the character analysis assignment. The results indicate that there is no significant difference in using technology based instruction for the 7th grade gifted and talented language arts student.
The Brownfield Bargain: Negotiating Site Cleanup Policies in Wisconsin
Creators: name: Hersh, Robert
name: Wernstedt, Kris
name: Hersh, Robert
name: Wernstedt, Kris
Publisher: name: Unknown
Year: 2003
Subjects: subject: Environmental Economics and Policy
subject: brownfields
subject: policy innovation
subject: regulatory history

description: In this paper, the first part of our three-part study on the development of brownfields policy in Wisconsin, we examine the regulatory history of the brownfields policy. We start with the 1978 Hazardous Substance Spill Law, the antecedent to the brownfields regulatory reform of the 1990s, and examine the interaction of policy entrepreneurs in both the public and the private sectors that has led to innovation. We follow this by exploring the response of the Wisconsin Department of Natural Resources to reform efforts, looking at both how it anticipated and led some of the efforts and how it addressed demands placed on it by the state legislature and executive. We then discuss the central role that the state's Brownfields Study Group has played in moving brownfields cleanup and redevelopment objectives into legislation and the field. We base our work on interviews with nearly 70 individuals from public, private for-profit, private nonprofit, and tribal organizations.
A Comparison of the Efficacy of Phonics Instruction With and Without Technology
Creators: name: Sprague, Kathleen Keck
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: subject: Education -- Research papers (Graduate)

description: This study, a quasi-experimental pretest-posttest design, was conducted by a first grade
classroom teacher to determine if providing opportunities for first grade students to practice
phonics using an iPad and computer games would increase their phonics skills more than using
traditional methods of teaching phonics which did not include technology. Students from three
first grade classes with relatively low DIBELS (Dynamic Indicators of Basic Early Literacy
Skills) scores were randomly assigned to one of three groups. All students received the same
daily phonics instruction as part of their reading curriculum. One group participated in
supplemental phonics practice using the iPad and computer games. Another group received
supplemental phonics practice using paper-and-pencil methods and hands-on techniques such as
manipulating materials and playing word games. A third group did not receive any additional
phonics practice. At the conclusion of the study, all students were tested using a parallel version
of the previously given DIBELS tests and the gain scores of the three groups were compared.
The results of the study demonstrated improvement in test scores for all three groups. There was
not a significant difference in student gain scores for the three groups. Ratings of participants’
attitudes towards their activities suggested that there were positive effects of using technology to
practice phonics skills. The technology group found their activities more enjoyable and helpful
than the traditional group. This finding suggests that students enjoyed practicing phonics on the
iPad and computer more than they did using traditional methods. Further research should be
conducted to explore how specific technologies can be used most effectively to improve the
phonics skills of first grade students.
The SAMI Galaxy Survey: a statistical approach to an optimal classification of stellar kinematics in galaxy surveys
Creators: name: van de Sande, Jesse
name: Vaughan, Sam P.
name: Cortese, Luca
name: Scott, Nicholas
name: Bland-Hawthorn, Joss
name: Croom, Scott M.
name: Lagos, Claudia D. P.
name: Brough, Sarah
name: Bryant, Julia J.
name: Devriendt, Julien
name: Dubois, Yohan
name: D'Eugenio, Francesco
name: Foster, Caroline
name: Fraser-McKelvie, Amelia
name: Harborne, Katherine E.
name: Lawrence, Jon S.
name: Oh, Sree
name: Owers, Matt S.
name: Poci, Adriano
name: Remus, Rhea-Silvia
name: Richards, Samuel N.
name: Schulze, Felix
name: Sweet, Sarah M.
name: Varidel, Mathew R.
name: Welker, Charlotte
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Large galaxy samples from multi-object IFS surveys now allow for a statistical analysis of the z~0 galaxy population using resolved kinematics. However, the improvement in number statistics comes at a cost, with multi-object IFS survey more severely impacted by the effect of seeing and lower S/N. We present an analysis of ~1800 galaxies from the SAMI Galaxy Survey and investigate the spread and overlap in the kinematic distributions of the spin parameter proxy $λ_{Re}$ as a function of stellar mass and ellipticity. For SAMI data, the distributions of galaxies identified as regular and non-regular rotators with \textsc{kinemetry} show considerable overlap in the $λ_{Re}$-$\varepsilon_e$ diagram. In contrast, visually classified galaxies (obvious and non-obvious rotators) are better separated in $λ_{Re}$ space, with less overlap of both distributions. Then, we use a Bayesian mixture model to analyse the observed $λ_{Re}$-$\log(M_*/M_{\odot})$ distribution. Below $\log(M_{\star}/M_{\odot})\sim10.5$, a single beta distribution is sufficient to fit the complete $λ_{Re}$ distribution, whereas a second beta distribution is required above $\log(M_{\star}/M_{\odot})\sim10.5$ to account for a population of low-$λ_{Re}$ galaxies. While the Bayesian mixture model presents the cleanest separation of the two kinematic populations, we find the unique information provided by visual classification of kinematic maps should not be disregarded in future studies. Applied to mock-observations from different cosmological simulations, the mixture model also predicts bimodal $λ_{Re}$ distributions, albeit with different positions of the $λ_{Re}$ peaks. Our analysis validates the conclusions from previous smaller IFS surveys, but also demonstrates the importance of using kinematic selection criteria that are dictated by the quality of the observed or simulated data.
description: 30 pages and 17 figures, accepted for publication in MNRAS. Abstract abridged for Arxiv. The key figures of the paper are: 3, 7, 8, and 11
A broadband UAV-based FMCW GPR and the infuence of vegetation
Creators: name: Burr, Ralf
name: Schartel, Markus
name: Mayer, Winfried
name: Walter, Thomas
name: Waldschmidt, Christian
Publisher: name: Universität Ulm
Year: 2019
Subjects: subject: Moduliertes Dauerstrichradar
subject: DDC 620 / Engineering & allied operations
subject: Ground penetrating radar
subject: Land mines
subject: Elektromagnetische Reflexionsmethode
subject: FMCW-Radar

description: Ground penetrating radar (GPR) is one of the tools supporting mine detection. In this contribution a wide-band frequency-modulated-continuous wave (FMCW) GPR operating in the frequency band from 0.6 GHz to 4.6GHz in a bistatic configuration is presented. The frequency synthesis is realized using a broadband voltage controlled oscillator (VCO) in a higher frequency band and mixed down to the desired frequency band. The radar including antennas is integrated on a unmanned aerial vehicle (UAV). In measurements the effect of vegetation and the frequency dependence is investigated.
[Cocopa vocabularies]
Creators: name: Crawford, James Mack
name: San Diego, Edward
name: San Diego, Johnnie
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: coc
subject: Cocopa language

description: Mimeographed Survey vocabulary sheets. "Short California word list" dated July 30, 1962 (original and one verifax copy). "Alphabetical word list" with note "copied from slips May 1962".
Switching Device-Cognizant Sequential Distribution System Restoration
Creators: name: Arif, Anmar
name: Cui, Bai
name: Wang, Zhaoyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This paper presents an optimization framework for sequential reconfiguration using an assortment of switching devices and repair process in distribution system restoration. Compared to existing studies, this paper considers types, capabilities and operational limits of different switching devices, making it applicable in practice. We develop a novel multi-phase method to find the optimal sequential operation of various switching devices and repair faulted areas. We consider circuit breakers, reclosers, sectionalizers, load breaker switches, and fuses. The switching operation problem is decomposed into two mixed-integer linear programming (MILP) subproblems. The first subproblem determines the optimal network topology and estimates the number of steps to reach that topology, while the second subproblem generates a sequence of switching operations to coordinate the switches. For repairing the faults, we design an MILP model that dispatches repair crews to clear faults and replace melted fuses. After clearing a fault, we update the topology of the network by generating a new sequence of switching operations, and the process continues until all faults are cleared. To improve the computational efficiency, a network reduction algorithm is developed to group line sections, such that only switchable sections are present in the reduced network. The proposed method is validated on the IEEE 123-bus and 8500-bus systems.
description: IEEE Transactions on Power Systems
Cyrtorizoceras Hyatt 1900
Creators: name: Kröger, Björn
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Oncoceratida
Oncoceratidae
Cyrtorizoceras

description: Genus Cyrtorizoceras Hyatt, 1900
Type species
Cyrtoceras minneapolis Clarke, 1897, from Minneapolis, Minnesota, USA, Platteville Formation, Black River Group, Sandbian; by original designation.
Diagnosis
Compressed cyrtocones; dorsal and ventral profiles diverging constantly adorally; sides converging slightly over mature body chamber; aperture with deep hyponomic sinus; nearly smooth or ornamented with transverse costae; siphuncle subventral, slender; segments slightly expanded, probably empty. (Adopted from Sweet 1964b.)
description: Published as part of Kröger, Björn, 2025, The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia, pp. 1-169 in European Journal of Taxonomy 978 on page 84, DOI: 10.5852/ejt.2025.978.2801, http://zenodo.org/record/14988376
1997 BUSINESS ANALYSIS SUMMARY FOR DAIRY FARMS
Creators: name: Nott, Sherrill B.
name: Nott, Sherrill B.
Publisher: name: Unknown
Year: 1998
Subjects: Livestock Production/Industries

description: This report is a summary of the financial and production records kept by dairy farmers enrolled in the Telfarm/MicroTel record program through Michigan State University Extension, or were accounting clients of either AgriSolutions or Salisbury Management Services. This report has three purposes: 1)to provide statistical information about the financial results on dairy farms during 1997; 2)to provide production costs for comparative analysis and forward planning; and 3)to provide information on the trends in resource use, income and costs during the last few years.
Experimental study on the detection of avalanche victims using an airborne ground penetrating synthetic aperture radar
Creators: name: Grathwohl, Alexander
name: Hinz, Philipp
name: Burr, Ralf
name: Steiner, Maximilian
name: Waldschmidt, Christian
Publisher: name: Universität Ulm
Year: 2021
Subjects: subject: Moduliertes Dauerstrichradar
subject: Lawinenopfer
subject: DDC 620 / Engineering & allied operations
subject: Continuous wave radar
subject: Avalanches
subject: Synthetic apertures
subject: Elektromagnetische Reflexionsmethode
subject: FMCW-Radar
subject: Lawine
subject: Synthetische Apertur

description: For avalanche victims a short burial time is imperative for a good chance of survival. Although airborne radar systems have been used for a long time in monitoring snow accumulation, their ability to quickly cover large areas of terrain is however not commonly employed in the search for buried victims. The presented method for detection and localization of avalanche victims utilizes a ground penetrating radar mounted on an unmanned aerial system. In order to detect buried victims, the system is operated as a synthetic aperture radar using frequency-modulated continuous-wave modulation. Therefore, it is not dependent on avalanche beacons. This approach is successfully demonstrated in an experimental study, where buried, water-filled mannequin torsos could be detected in fresh as well as compressed mixed snow in a realistic winter environment on 1900 m above mean sea level.
The statistics of diffusive flux
Creators: name: Antonio, Alba Margarita Resendiz
name: Larralde, Hernan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We calculate the explicit probability distribution function for the flux between sites in a simple discrete time diffusive system composed of independent random walkers. We highlight some of the features of the distribution and we discuss its relation to the local instantaneous entropy production in the system. Our results are applicable both to equilibrium and non-equilibrium steady states as well as for certain time dependent situations.
description: 12 pages, 1 figure
EQUINE REFERRING VETERINARIAN SATISFACTION WITH THE VETERINARY TEACHING HOSPITAL, MICHIGAN STATE UNIVERSITY - JULY 1, 1999 THROUGH JUNE 30, 2000
Creators: name: Lloyd, James W.
name: Donovan, Debra
name: Camara, Youssouf
name: Leeper, Delta
name: Gross, Renee
name: Lloyd, James W.
name: Donovan, Debra
name: Camara, Youssouf
name: Leeper, Delta
name: Gross, Renee
Publisher: name: Unknown
Year: 2001
Subjects: Teaching/Communication/Extension/Profession

description: Understanding clients' wants and needs is vital to the sustained success of any service business, and veterinary medicine offers no exception. The Veterinary Teaching Hospital (VTH) at the Michigan State University College of Veterinary Medicine (MSU-CVM) has successfully maintained a position at the forefront of the veterinary profession throughout most of its history. The staff has consistently been composed of clinicians who have been chosen because of their excellence and expertise. However, the assumption that emphasis on clinical excellence will, by itself, provide the foundation for sustained success in the client flow and business at the hospital has been unchallenged to date. Additionally, there are many areas in veterinary medicine that are becoming increasingly popular (e.g. oncology). Addition of, or attention to, these services is crucial in retaining our leadership role within the veterinary community. The results of a previous study indicated that 75.4% of equine clients chose MSU-VTH because they were referred by their primary veterinarian. One of the objectives of this study was to determine which factors influenced referring veterinarians in determining whether they refer their patients to MSU-VTH. Additionally, this study was designed to identify areas for possible expansion/contraction of our current service offerings in order to better serve the needs of our clients and referring veterinarians. The results of this study can be used as an outline for the development of a plan to maintain and improve referring veterinarian satisfaction and, ultimately, to sustain the teaching caseload and business of the hospital. In addition, this endeavor will serve to set a good example for our students by modeling the best management practices and establishing a critical blend of quality medicine/surgery and customer service.
Supersymmetric Canonical Commutation Relations
Creators: name: Constantinescu, Florin
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present unitarily represented supersymmetric canonical commutation relations which are subsequently used to canonically quantize massive and massless chiral,antichiral and vector fields. The massless fields, especially the vector one, show new facets which do not appear in the non superymmetric case. Our tool is the supersymmetric positivity induced by the Hilbert-Krein structure of the superspace.
description: 14 pages
On the X-ray Properties of OH Megamaser Sources: Chandra Snapshot Observations
Creators: name: Vignali, C.
name: Brandt, W. N.
name: Comastri, A.
name: Darling, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Chandra snapshot observations for a sample of 7 sources selected from the Arecibo OH megamaser (OHM) survey at z~0.13-0.22 and with far-infrared luminosities in excess of 10^{11} L_sun. In contrast with the known H2O megamasers, which are mostly associated with powerful Active Galactic Nuclei (AGN), the situation is far less clear for OHMs, which have been poorly studied in the X-ray band thus far. All of the observed sources are X-ray weak, with only one OHM, IRAS FSC 03521+0028 (z=0.15), being detected by Chandra (with 5 counts). The results from this pilot program indicate that the X-ray emission, with luminosities of less than ~10^{42} erg/s, is consistent with that from star formation (as also suggested in some cases by the optical spectra) and low-luminosity AGN emission. If an AGN is present, its contribution to the broad-band emission of OHM galaxies is likely modest. Under reasonable assumptions about the intrinsic X-ray spectral shape, the observed count distribution from stacking analysis suggests absorption of ~10^{22} cm^{-2}.
description: 8 pages, 3 figures, accepted for publication in MNRAS
Quantum Hall valley splitters and tunable Mach-Zehnder interferometer in graphene
Creators: name: Jo, M.
name: Brasseur, P.
name: Assouline, A.
name: Fleury, G.
name: Sim, H. -S.
name: Watanabe, K.
name: Taniguchi, T.
name: Dumnernpanich, W.
name: Roche, P.
name: Glattli, D. C.
name: Kumada, N.
name: Parmentier, F. D.
name: Roulleau, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene is a very promising test-bed for the field of electron quantum optics. However, a fully tunable and coherent electronic beam splitter is still missing. We report the demonstration of electronic beam splitters in graphene that couple quantum Hall edge channels having opposite valley polarizations. The electronic transmission of our beam splitters can be tuned from zero to near unity. By independently setting the beam splitters at the two corners of a graphene PN junction to intermediate transmissions, we realize a fully tunable electronic Mach-Zehnder interferometer. This tunability allows us to unambiguously identify the quantum interferences due to the Mach-Zehnder interferometer, and to study their dependence with the beam-splitter transmission and the interferometer bias voltage. The comparison with conventional semiconductor interferometers points towards universal processes driving the quantum decoherence in those two different 2D systems, with graphene being much more robust to their effect.
THE EPISTEMOLOGY OF AGRIBUSINESS METHODS OF AGRIBUSINESS SCHOLARSHIP
Creators: name: Peterson, H. Christopher
name: Peterson, H. Christopher
Publisher: name: Unknown
Year: 1997
Subjects: Agribusiness

description: The prevailing agricultural economics epistemology of positivistic knowledge is argued to be inappropriate for the study of agribusiness. In contrast to the traditional arenas of agricultural economics study, agribusiness research should be designed to be (1) theory-building, rather than theory disconfirming, (2) capable of examining phenomena that are not readily quantifiable nor separable from context, and (3) capable of examining phenomena for which the underlying cause-and-effect structure is unstable or not given to general theory. Methods of phenomenological knowledge are much more appropriate to agribusiness research, and these methods should be adopted by agribusiness scholars and recognized for promotion and tenure purposes.
CentraleSupélec. New curriculum. Statement of objectives.
Creators: name: Cagnol, John
name: Biausser, Hervé
Publisher: name: Zenodo
Year: 2016
Subjects: education
engineering
skills

description: Within the context of globalization and the competitive environment among the best institutions in the world, CentraleSupélec's ambition is to become a world-class institution of reference on a global scale for its four core activities: - training of top-level generalist engineers, -specific professional courses (Masters, Advanced Masters and continuing education), -training to and via research, supported by its Doctoral School, - research in Engineering and Systems Sciences. To achieve this goal, it is essential to offer a state-of-the-art engineering curriculum of the highest level. It is the flagship and foundation of the Engineering school, whose first mission is to open successful career paths for its graduates who are at the service of society.
Old Globular Clusters Masquerading as Young in NGC 4365?
Creators: name: Brodie, Jean P.
name: Strader, Jay
name: Denicolo, Glenda
name: Beasley, Michael A.
name: Cenarro, A. J.
name: Larsen, Soeren S.
name: Kuntschner, Harald
name: Forbes, Duncan A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High signal-to-noise, low-resolution spectra have been obtained for 22 globular clusters (GCs) in NGC 4365. Some of these were selected as probable representatives of an intermediate-age (2-5 Gyr), extremely metal-rich GC subpopulation. The presence of such a subpopulation had been inferred from the unusual optical and near-IR color distributions of GCs in this otherwise typical Virgo elliptical galaxy. However, ages derived from Lick indices are consistent with uniformly old mean ages for all GCs in our sample. The metallicities of the clusters show some evidence for a trimodal distribution. The most metal-poor and metal-rich peaks are consistent with the values expected for an elliptical galaxy of this luminosity, but there appears to be an additional, intermediate-metallicity peak lying between them. New Hubble Space Telescope photometry is consistent with this result. A plausible scenario is that in earlier data these three peaks merged into a single broad distribution. Our results suggest that it is difficult to identify intermediate-age GC subpopulations solely with photometry, even when both optical and near-infrared colors are used.
description: 30 pages, including 11 figures. AJ in press
An Evaluation of The Proton Structure Functions $F_{2}$ and $F_{L}$ at Small $x$
Creators: name: Boroun, G. R.
name: Rezaei, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe the determination of the DIS structure functions $F_{2}$ and $F_{L}$ by using the singlet Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) and Altarelli-Martinelli equations at small values of $x$. The determination of the longitudinal structure function is presented as a parameterization of $F_{2}(x,Q^{2})$ and its derivative. Analytical expressions for $σ_{r}(x,Q^{2})$ in terms of the effective parameters of the parameterization of $F_{2}(x,Q^{2})$ and $F_{L}(x,Q^{2})$ are presented. This analysis is enriched by including the higher-twist effects in calculation of the reduced cross sections which is important at low-$x$ and low-$Q^{2}$ regions. Numerical calculations and comparison with H1 data demonstrate that the suggested method provides reliable $F_{L}(x,Q^{2})$ and $σ_{r}(x,Q^{2})$ at low $x$ in a wide range of the low absolute four-momentum transfers squared ($1.5~\mathrm{GeV}^{2}
description: will be appear in Phys.Lett.B
THE USE OF MODERN EDUCATIONAL PLATFORMS IN THE LEARNING PROCESS.
Creators: name: Turdalieva, N.A.
name: Eshnazarova, M.Y.
Publisher: name: Zenodo
Year: 2024

description: The modern education system is undergoing significant transformations driven by digital technologies and platforms. The introduction of digital platforms has not only changed how lessons are organized but also significantly impacted the relationships between teachers and students. During the pandemic, the necessity for remote learning surged, further highlighting the critical role of modern educational platforms. Today, platforms like Moodle, Google Classroom, and Edmodo provide teachers and students with a wide range of tools, offering advantages over traditional education methods.
Lensing Reconstruction using redshifted 21cm Fluctuations
Creators: name: Zahn, Oliver
name: Zaldarriaga, Matias
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the potential of second generation measurements of redshifted 21 cm radiation from before and during the epoch of reionization (EOR) to reconstruct the matter density fluctuations along the line of sight. To do so we generalize the quadratic methods developed for the Cosmic Microwave Background (CMB) to 21 cm fluctuations. We show that the three dimensional signal can be decomposed into a finite number of line of sight Fourier modes that contribute to the lensing reconstruction. Our formalism properly takes account of correlations along the line of sight and uses all the information contained in quadratic combinations of the signal. In comparison with the CMB, 21 cm fluctuations have the disadvantage of a relatively scale invariant unlensed power spectrum which suppresses the lensing effect. The smallness of the lensing effect is compensated by using information from a range of observed redshifts. We estimate the size of experiments that are needed to measure this effect. With a square kilometer of collecting area and a maximal baseline of 3 km one can achieve lensing reconstruction noise levels an order of magnitude below CMB quadratic estimator constraints at L=1000, and map the deflection field out to less then a tenth of a degree (L> 2000) within a season of observations on one field. Statistical lensing power spectrum detections will be possible to sub-arcminute scales, even with the limited sky coverage that currently conceived experiments have. One should be able to improve constraints on cosmological parameters by using this method. With larger collecting areas or longer observing times, one could probe arcminute scales of the lensing potential and thus individual clusters. We address the effect that foregrounds might have on lensing reconstruction with 21 cm fluctuations.
description: 14 pages, 8 Figures, replaced to match version to appear in ApJ
Blaser, Klauspeter, Wenn Gott schwarz wäre ...Das Problem des Rassismus in Theologie und christlicher Praxis
Creators: name: Groth, Siegfried
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 23 Nr. 1 (1974): Ökumenische Rundschau, Band 23, Heft 1
DAIRY FARM BUSINESS ANALYSIS WORKBOOK
Creators: name: Betz, Roger
name: Staton, Mike
name: Knuth, Janice
name: Schwab, Gerald
name: Nott, Sherrill B.
name: Betz, Roger
name: Staton, Mike
name: Knuth, Janice
name: Schwab, Gerald
name: Nott, Sherrill B.
Publisher: name: Unknown
Year: 2001
Subjects: Livestock Production/Industries

description: Dairy Farm Analysis Workbook is divided into sections of the dairy farm that can be analyzed including financial, labor, crops and the dairy herd.
SOME REASONS WHY RURAL WORKERS DO NOT FIND WORK IN TIGHT LABOR MARKETS: RESULTS FROM FOCUS GROUPS MEETING IN RURAL MICHIGAN
Creators: name: Moser, Colletta H.
name: Begashaw, Getachew W.
name: Moser, Colletta H.
name: Begashaw, Getachew W.
Publisher: name: Unknown
Year: 2000
Subjects: Labor and Human Capital

description: This paper is a part of a series of reports of the activities conducted under a grant from the Fund for Rural America, U.S. Department of Agriculture. Funds for the three year grant entitled "Enhancing Rural Economies Through Comprehensive Extension, Research & Partnering Approaches Using Multi-County Clusters in Michigan With Application to National Rural Settings" were received by Michigan State University's Department of Agricultural Economics in March, 1998. The major goal of the grant is to increase economic development activity in four clusters of rural counties in Michigan through the utilization of the resources of the Michigan State University Extension Service, Michigan Agricultural Experiment Station, and other resources of Michigan State University. Various local, state, and federal public partners as well as the private sector are to co-sponsor projects. This paper represents the first stages of a continuing project to explore the utilization of labor supply analysis in rural Michigan and to develop Extension programs to meet their needs. Future activities include focus groups, a conference, and perhaps a rural academy to be developed by Michigan State University and its partners.
The shape of higher-dimensional state space: Bloch-ball analog for a qutrit
Creators: name: Eltschka, Christopher
name: Huber, Marcus
name: Morelli, Simon
name: Siewert, Jens
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Geometric intuition is a crucial tool to obtain deeper insight into many concepts of physics. A paradigmatic example of its power is the Bloch ball, the geometrical representation for the state space of the simplest possible quantum system, a two-level system (or qubit). However, already for a three-level system (qutrit) the state space has eight dimensions, so that its complexity exceeds the grasp of our three-dimensional space of experience. This is unfortunate, given that the geometric object describing the state space of a qutrit has a much richer structure and is in many ways more representative for a general quantum system than a qubit. In this work we demonstrate that, based on the Bloch representation of quantum states, it is possible to construct a three dimensional model for the qutrit state space that captures most of the essential geometric features of the latter. Besides being of indisputable theoretical value, this opens the door to a new type of representation, thus extending our geometric intuition beyond the simplest quantum systems.
description: 10 pages, 5 figures; discussion of results improved, one new figure
Merging strangeon stars II: the ejecta and light curves
Creators: name: Lai, X. Y.
name: Xia, C. J.
name: Yu, Y. W.
name: Xu, R. X.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The state of supranuclear matter in compact stars remains puzzling, and it is argued that pulsars could be strangeon stars. The consequences of merging double strangeon stars are worth exploring, especially in the new era of multi-messenger astronomy. To develop the "strangeon kilonova" scenario proposed in Paper I, we make a qualitative description about the evolution of ejecta and light curves for merging double strangeon stars. In the hot environment of the merger, the strangeon nuggets ejected by tidal disruption and hydrodynamical squeezing would suffer from evaporation, in which process particles, such as strangeons, neutrons and protons, are emitted. Taking into account both the evaporation of strangeon nuggets and the decay of strangeons, most of the strangeon nuggets would turn into neutrons and protons, within dozens of milliseconds after being ejected. The evaporation rates of different particles depend on temperature, and we find that the ejecta could end up with two components, with high and low opacity respectively. The high opacity component would be in the directions around the equatorial plane, and the low opacity component would be in a broad range of angular directions. The bolometric light curves show that even if the total ejected mass would be as low as $\sim 10^{-4} M_\odot$, the spin-down power of the long-lived remnant would account for the whole emission of kilonova AT2017gfo associated with GW 170817. The detailed picture of merging double strangeon stars is expected to be tested by future numerical simulations.
ANALYSIS OF SOCIOECONOMIC DATA FOR THE VALUE ADDED AGRICULTURE CLUSTER OF MICHIGAN COUNTIES
Creators: name: Phillips, Jon C.
name: Phillips, Jon C.
Publisher: name: Unknown
Year: 1998
Subjects: Community/Rural/Urban Development

description: This paper presents an analysis of socioeconomic data for a cluster of three counties in central Michigan. These adjacent counties (Gratiot, Mecosta, and Montcalm) are part of a three-year rural development project. Data for individual counties as well as averages for the cluster are given. Topics covered include population growth, age of residents, educational attainment, unemployment, employment/jobs, sources of personal income, household income, poverty rates, and household composition. An executive summary is also provided.
Quantum Macrostates, Equivalence of Ensembles and an H-Theorem
Creators: name: De Roeck, W.
name: Maes, C.
name: Netocny, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Before the thermodynamic limit, macroscopic averages need not commute for a quantum system. As a consequence, aspects of macroscopic fluctuations or of constrained equilibrium require a careful analysis, when dealing with several observables. We propose an implementation of ideas that go back to John von Neumann's writing about the macroscopic measurement. We apply our scheme to the relation between macroscopic autonomy and an H-theorem, and to the problem of equivalence of ensembles. In particular, we show how the latter is related to the asymptotic equipartition theorem. The main point of departure is an expression of a law of large numbers for a sequence of states that start to concentrate, as the size of the system gets larger, on the macroscopic values for the different macroscopic observables. Deviations from that law are governed by the entropy.
description: 16 pages; v1 -> v2: Sec. 3 slightly rewritten, 2 references added
THE REFORM OF RICE MILLING AND MARKETING IN THE OFFICE DU NIGER: CATALYST FOR AN AGRICULTURAL SUCCESS STORY IN MALI
Creators: name: Diarra, Salifou Bakary
name: Staatz, John M.
name: Bingen, R. James
name: Dembele, Niama Nango
name: Diarra, Salifou Bakary
name: Staatz, John M.
name: Bingen, R. James
name: Dembele, Niama Nango
Publisher: name: Unknown
Year: 1999
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: This chapter focuses on how changes in the rules regarding who could compete in rice milling in the ON combined with technological change in rice production and new macro-economic policies (particularly the CFA franc devaluation) to lead to a transformation of rice production and marketing in the ON. The chapter also pays particular attention to the synergies between technological changes in rice production, the introduction of new marketing and macroeconomic policies, and the evolution of institutions governing rice production in the ON on the transformation of agriculture in this region of Mali.
RISK RATIONING AND ACTIVITY CHOICE IN MORAL HAZARD CONSTRAINED CREDIT MARKETS
Creators: name: Boucher, Stephen R.
name: Carter, Michael R.
name: Boucher, Stephen R.
name: Carter, Michael R.
Publisher: name: Unknown
Year: 2001
Subjects: Risk and Uncertainty

description: This paper explores the productivity and income distribution effects of asymmetric information and risk preferences on the credit market. A model of contract design in the presence of moral hazard is developed in which competitive, risk neutral lenders offer contracts to risk averse agents who hold the option to invest capital and labor time in an entrepreneurial activity. The model gives rise to the potential for quantity rationing and an additional form of non-price rationing called risk rationing. Both quantity and risk rationed agents would seek credit and carry out the entrepreneurial activity in a first best, or symmetric information world. When information is asymmetric, the menu of available loan contracts shrinks. In equilibrium, neither type of agent ends up with a loan contract, and both undertake a safe, but low return wage labor activity. Quantity rationed agents are involuntarily excluded from the entrepreneurial activity because they are denied any loan contract. Risk rationed agents voluntarily retreat from the credit market and the entrepreneurial activity rather than choose among the limited set of high risk contracts available to them in the presence of asymmetric information. Analysis shows that both quantity and risk rationing are likely to be wealth-biased, inhibiting the activity choice and the income earning potential of low wealth agents, and reproducing initial inequality.
Kritik liberaler Freiheit. Eine freiheitstheoretische Konzeption sozialer Gerechtigkeit. Statement beim Symposion „Beherzte Freiheit“ mit Paul Kirchhof am 11. November 2022 in Regensburg
Creators: name: Laux, Bernhard
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: Freiheit; Liberalismus; soziale Gerechtigkeit; Kirchhof; Sen; Kritik;
subject: 230 Theologie, Christentum

description: Was ich vorhabe, lässt sich in zwei Thesen zusammenfassen:
1. Liberale Freiheitskonzeption geht vom individuellen Freiheitsrecht und Freiheitsraum aus, blendet aber die sozialen Voraussetzungen der Freiheitsfähigkeit und des Freiheitsgebrauchs weitgehend aus. Vor allem aber lassen sich diese Voraussetzungen im Rahmen des liberalen Gesellschafts- und Staatsverständnisses gerade nicht schaffen. Das ist die im Titel formulierte „Kritik liberaler Freiheit“.
2. Soziale Gerechtigkeit lässt sich als Freiheitskonzeption verstehen, also als eine Konzeption, die den Freiheitsgebrauch ermöglichen und erweitern will, indem sie den Blick auf die erforderlichen sozialen, gesellschaftlichen Bedingungen richtet. Theorie sozialer Gerechtigkeit ist Freiheitstheorie.
PRICE DYNAMICS IN A VERTICAL SECTOR: THE CASE OF BUTTER
Creators: name: Chavas, Jean-Paul
name: Mehta, Aashish
name: Chavas, Jean-Paul
name: Mehta, Aashish
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis

description: We develop a reduced-form model of price transmission in a vertical sector, allowing for refined asymetric, contemporaneous and lagged, own and cross price effects. The model is used to analyze wholesale-retail price dynamics in the US butter market. The analysis provides strong evidence of asymmetric price transmissions. It documents the complex nature of nonlinear price dynamics in a vertical sector and its implications for the distribution of future prices. It finds evidence that the asymmetric response to shocks is stronger in the sort run for retail prices, and in the longer run for wholesale prices.