521 research outputs found
Perceived Equity, Motivation and Final Offer Arbitration in Major League Baseball
Final offer salary arbitration in major league baseball offers a unique institutional arrangement that creates a naturally occurring non-equivalent groups repeated measure research design. The structural arrangements allow for examination of anticipatory expectancy effects and for assessment of behavioral responses consistent with equity theory predictions. Additionally, equity theory can be tested without the methodological problems inherent in defining the referent other. Performance and mobility were examined for major league baseball position players who won and lost their arbitration hearings. Pre-arbitration performance was found to significantly predict arbitration outcome. Despite similar patterns of post-arbitration performance between winners and losers, a significant relationship was noted between losing arbitration and postarbitration performance declines. Analyses also suggested that losers were also significantly more likely to change teams and leave major league baseball. The causality of the relationship between performance and arbitration outcome is discussed along with expectancy and equity effects as they relate to performance and mobility following the arbitration intervention
Zenith angle dependence of the cosmic ray rate as measured with Imaging air-Cherenkov Telescopes
The rate of extensive air-showers observed with imaging air-Cherenkov
telescopes is zenith angle dependent. This effect originates from the
increasing geometrical distance of the observed shower to the telescope with
increasing zenith distance. This paper investigates how this alters the
observed image and how this affects the trigger rate as a function of zenith
angle. The discussed effects include the change of Cherenkov light yield, of
absorption in the atmosphere, of photon density at the aperture and of the
image size at the focal plane of the telescope. Based on a simple model for the
atmosphere and well-known first principles on the development of extensive
air-showers, the zenith angle dependence is expressed analytically. The
assumption that most light is emitted from the shower core and mathematical
approximations allow to derive an analytical expression describing the zenith
angle dependence well with only three free parameters which are directly linked
with the underlying physics. This suggests further investigations about how
these fit parameters are linked to the properties of the atmosphere and the
instrument. Using data published by the First G-APD Cherenkov Telescope, a good
match of the fit functions with the data is obtained. For the trigger rate of
cosmic rays, the obtained parameters are consistent with the naive expectation.Comment: accepte
“But Who, We?”: Derrida on Non-Human Others
In this dissertation I establish the possibility of social and ethical relationships with non-human natural (and in particular inanimate) beings. I do so based on the work of 20th century French philosopher Jacques Derrida. In chapter 1 I discuss the relatively sparse secondary literature that addresses the intersection between Derrida\u27s work and environmental philosophy. I also go over some textual indications that show that Derrida has been concerned with non-human beings throughout his career.
In chapters 2 and 3 I establish the impossibility of conclusively excluding any kind of being from the purview of ethical responsibility. While chapter 2 develops the nature of Derrida\u27s ethics, chapter 3 ties this conception of ethics back to more theoretical considerations that we find in Derrida\u27s texts.
Chapters 4 to 6 serve to illustrate in a more positive fashion how Derrida might help us to understand the possibility of social and ethical relationships with inanimate beings. Chapter 4 focuses on the notion of the trace in order to show that the presence qua absence that characterizes our experience of human persons can be discerned in our relationships to inanimate beings as well. Chapter 5 focuses on Derrida\u27s discussion of a human corpse as neither simply alive nor simply dead. I argue that this experience of life/death is possible with regard to non-human inanimate beings as well. Finally, in chapter 6 I argue for the possibility of sharing a common world with non-human (including inanimate) beings based on Derrida\u27s conception of habitat and of the world as fractured and constructed
M@TE - Monitoring at TeV Energies
Blazars are extremely variable objects emitting radiation across the
electromagnetic spectrum and showing variability on time scales from minutes to
years. For the understanding of the emission mechanisms, simultaneous
multi-wavelength observations are crucial. Various models for flares predict
simultaneous flux increases in the X-ray and gamma-ray band or more complex
variability patterns, depending on the dominant process responsible for the
gamma-ray emission. Monitoring at TeV energies is providing important
information to distinguish between different models. To study duty cycle and
variability time scales of an object, an unbiased data sample is essential, and
good sensitivity and continuous monitoring are needed to resolve smaller time
scales. A dedicated long-term monitoring program at TeV energies has been
started by the FACT project. Its success clearly illustrated that the usage of
silicon based photo sensors (SIPMs) is ideal for long-term monitoring. They
provide not only an excellent and stable detector performance, but also allow
for observations during bright ambient light minimizing observational gaps and
increasing the instrument's duty cycle. The observation time in a single
longitude is limited to 6 hours. To study typical variability time scales of
few hours to one day, the ultimate goal is 24/7 monitoring with a network of
small telescopes around the globe (DWARF project). The installation of an
Imaging Air Cherenkov Telescope is planned in San Pedro Martir, Mexico. For the
M@TE (Monitoring at TeV energies) telescope, a mount from a previous experiment
is being refurbished to be equipped with a camera using the new generation of
SiPMs. In the presentation, the status of the M@TE project will be reported
outlining the scientific potential, including the possibility to extend
monitoring campaigns to 12 hours by coordinated observations together with
FACT.Comment: 5 pages, 1 figure. Contribution to the 6th International Symposium on
High Energy Gamma-Ray Astronomy (Gamma2016), Heidelberg, Germany. To be
published in the AIP Conference Proceeding
Efectos de la fecha de siembra sobre el rendimiento y calidad comercial del maíz dulce (Zea Mays L., var. saccharata körn)
El efecto de la fecha de siembra sobre la producción y calidad del cultivo de maíz dulce en el norte de la provincia de Buenos Aires no ha sido estudiado y su conocimiento resulta de suma importancia para la planificación y obtención de resultados óptimos y viabilidad comercial para los productores de dicha zona. En base a esta problemática se estudió el efecto de tres fechas de siembra: 28 de octubre, 9 de noviembre y 5 de diciembre 2009 (fecha 1, 2 y 3, respectivamente) sobre el rendimiento y calidad comercial de Maíz Dulce (Zea Mays L., var. saccharata körn). La hipótesis principal que guió este trabajo fue que el atraso de la fecha de siembra reduciría el tamaño y peso de la espiga de maíz dulce afectando sus parámetros comerciales. Para poner a prueba esta hipótesis, se realizó un ensayo a campo en la localidad de Capilla del Señor, provincia de Buenos Aires. En las tres fechas mencionadas se sembró el híbrido Cahill (P) de un ciclo en fecha de siembra óptima de 75 días. El manejo de los cultivos respondió a un manejo convencional de la zona. Durante el ciclo del cultivo se llevaron a cabo determinaciones densidad y área foliar por planta. El momento de la cosecha se determinó por el método de apreciación visual del grano lechoso. Se tomaron muestras de espigas para la determinación de rendimiento y calidad comercial. El área foliar por planta no presentó diferencias significativas entre la fecha 2 y3, sin embargo hubo una tendencia hacia una mayor área foliar en la fecha 2 (2826 cm2 ± 256) que en la fecha 3 (2596 cm2 ± 256). Además, fue la fecha en la que la radiación acumulada incidente fue mayor (1605 mj/m2) en el ciclo de cultivo, ya que ésta fue en aumento desde principios de octubre hasta fines de enero; a partir de ese momento la radiación cayó marcadamente, coincidiendo con el ciclo del cultivo de la fecha 3 (1555 mj/m2). La mayor radiación incidente y la mayor capacidad de captura de la misma (Área Foliar) se tradujo en un mayor peso de la espiga (270 ± 58 gr) para los cultivos sembrados en la fecha 2 respecto de los de la fecha 3 (204 ± 58) y la fecha 1 (190 ± 58). Por otro lado, los cultivos en la fecha 2 presentaron mejor relación grano/marlo (2,57 ± 0,29) y mayor cantidad de granos comerciales (446 ± 45 granos/espiga) diferenciándose significativamente de los cultivos sembrados en la fecha 3 (1,97 ± 0,29) y la fecha 1 (0,92 ± 0,29) para la relación grano/marlo y también para los granos comerciales, 384 ± 45 y 394 ± 45 en los cultivos de la fecha 3 y 1, respectivamente. En vista de los resultados obtenidos se recomienda la fecha de principios de noviembre como fecha óptima de siembra ya que fue en la que se obtuvo el mayor rendimiento y mejor calidad de producto
Economic Analysis of a Water Truck for Feedyard Dust Suppression
Dust created in feedyards can adversely affect cattle performance. Dust suppression can be accomplished by moistening pen surfaces with traveling gun(s) sprinklers, solid-set sprinklers, and water trucks. This study specifically addresses the fixed and operational costs associated with a water truck for various sized feedyards.water truck, dust suppression, fixed costs, operational costs, Farm Management, Livestock Production/Industries,
Economic Analysis of Manure Harvesting Equipment in Feedyards for Dust Control
This study concentrated on one method of dust control which is harvesting manure with equipment. An economic analysis including hourly fixed and operational costs were performed on the following: tractor-pulled box scraper, front-end loader, dump truck, spreader truck, elevating scraper and tractor-pulled end dump. The purpose of this study was to generate cost data for feedyard owners/operators to reference when making manure management and equipment purchasing decisions.manure harvesting equipment, tractor-pulled box scraper, front-end loader, dump truck, spreader truck, tractor-pulled end dump, Agribusiness, Environmental Economics and Policy,
Experimental oak wilt control in Missouri
A joint report by the Central States Forest Experiment Station, Forest Service, U.S. Department of Agriculture and the Missouri Agricultural Experiment Station.Digitized 2007 AES.Includes bibliographical references (page [12])
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