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| Registros recuperados: 10.260 | |
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| Laws, J.A.; Williams, Robert J.; Pain, B.F.. |
| The financial implications of manipulating nitrogen (N) inputs and management strategies for beef production systems were assessed. One-hectare grassland farmlets were grazed to a target sward height by beef steers; herbage surplus to grazing requirements was cut for silage. Three systems were compared: ‘CN’, conventional mineral N application to a grass monoculture and broadcast slurry; ‘TN’, tactical mineral N application at fortnightly intervals to a grass monoculture with slurry injection and the early housing of cattle; ‘GC’, a mixed grass/white clover sward with no mineral N addition and slurry injection. Comparisons were made on two contrasting soil types: a freely-draining sandy loam (site 1) and a poorly drained clay (site 2). Financial budgets... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farmlets; Systems; Beef cattle; Nitrogen; Slurry; Animal production; Economics; UK; Farm Management. |
| Ano: 2002 |
URL: http://purl.umn.edu/6962 |
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| Moreau, Jacques; Lek, Sovan; Leelaprata, Wattana; Sricharoendham, Boonsong; Villanueva, Ching-maria. |
| Actual catch (commercial catch and local consumption) have been made available by the Royal Thai Department of Fisheries for the Ubolratana reservoir, North East Thailand, since the impoundment of the lake in 1965. The data have been used to assess the possible relationship between the actual catch and morphometric parameters of the lake (maximum area, depth, shore line, difference between maximum and minimum area) and actual catch the year before. A comparison of the predictive power is carried out between multiple linear regression analysis, a generalised additive model, a regression tree analysis, an autoregression analysis and an artificial neural network. Results show the poorly predictive power in linear system (around 40% of explained variances),... |
| Tipo: Text |
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| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00177/28875/27360.pdf |
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| Martinez, Stephen W.. |
| Changes in vertical coordination in the U.S. broiler, turkey, and egg industries decades ago may provide useful insight into more recent developments in the U.S. pork industry. The need to protect relationship- specific investments created incentives for contracts and vertical integration. In the presence of relationship-specific investments, market uncertainty from a number of sources helped determine the type of contract/vertical coordination alternative selected. |
| Tipo: Report |
Palavras-chave: Industrial Organization; Livestock Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/33773 |
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| von Haefen, Roger H.. |
| This study extends LaFrance's (1985, 1986, 1990) previous research by deriving the necessary parameter restrictions for two additional classes of incomplete demand system models to be integrable. In contrast to LaFrance's earlier work, this analysis considers models that treat expenditures and expenditure shares as the dependent variables in the specified incomplete demand systems. With environmental economists increasingly turning to demand system approaches to value changes in environmental quality, these new results significantly expand the menu of empirical specifications which can be used to fit a given data set. Moreover, the alternative specifications considered in this study, in combination with LaFrance's original work, represent a complete... |
| Tipo: Journal Article |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2002 |
URL: http://purl.umn.edu/31118 |
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| Culau,Paulete de Oliveira Vargas; López,Jorge; Rubensam,Jane Maria; Lopes,Rui Fernando Félix; Nicolaiewsky,Sérgio. |
| O objetivo deste trabalho foi o de avaliar o efeito do gene halotano sobre as características de qualidade da carne suína. Foram utilizadas 151 carcaças de suínos híbridos comerciais, sendo 93 carcaças com genótipo halotano normal (HalNN), 51 heterozigotos (HalNn) e 7 recessivas (Hal nn). As medidas efetuadas foram: espessura de toucinho e de músculo, percentagem de carne, peso da carcaça, pH aos 45 minutos e 24 horas após o abate, no músculo Longissimus dorsi, cor, perda de líquido por gotejamento e identificação do genótipo halotano em amostras de gordura através de PCR-RFLP. Suínos HalNn apresentaram maior espessura de músculo e percentagem de carne do que os suínos HalNN. Houve diferença significativa entre suínos HalNn e HalNN quanto ao pH inicial e à... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gene halotano; PSE; Qualidade da carne suína. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782002000100020 |
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| Coady, David P.; Parker, Susan W.. |
| This paper is concerned with the issue of the most cost-effective way of improving access to education for poor households in developing countries. We consider two alternatives: (1) extensive expansion of the school system (i.e., bringing education to the poor) and (2) subsidizing investment in education by the poor (i.e., bringing the poor to the education system). To this end, we evaluate the Programa Nacional de Educación, Salud y Alimentación (PROGRESA), a large poverty alleviation program recently introduced in Mexico that subsidizes education. Using double-difference regression estimators on data collected before and after the program for randomly selected control and treatment households, we estimate the relative impacts of the demand- and... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Labor and Human Capital. |
| Ano: 2002 |
URL: http://purl.umn.edu/16406 |
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| Siqueira, Euler David de. |
| In advanced capitalist societies, classified by Claus Offe as tardy-capitalists, one verifies a structural contradiction among the logics concerning valorization of capital and the processes of the publicadministration system. The continuous increase of work taxes in services, use values-producing work, or concrete work, usually classified as improductive work of higher value in advanced capitalist societies, according to Claus Offe, increasingly becomes a structural condition so that part of the work force may be converted into production of abstract trade/work values or into the merchandise social form. According to the Offean analysis on the growth of political-administrative systems in societies of tardy-capitalism, when organizing a portion of the... |
| Tipo: Journal Article |
Palavras-chave: Work in a job; Crises of capitalist state; Non-governability; Public Economics. |
| Ano: 2002 |
URL: http://purl.umn.edu/45266 |
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| COELHO,EUGÊNIO FERREIRA; OLIVEIRA,FRANCISCO DAS CHAGAS; NASCIMENTO,CARLOS JOSÉ ARAÚJO DO; VASCONCELOS,LÚCIO FLAVO LOPES; ARAÚJO,EUGÊNIO CELSO EMÉRITO. |
| O conhecimento dos critérios agronômicos de drenagem para a cultura da manga é fundamental na elaboração de sistemas de drenagem para áreas com essa cultura e permite antecipar o seu comportamento sob diferentes níveis de drenagem do solo . O trabalho teve por objetivo avaliar as condições de aeração e umidade do perfil de um solo arenoso (areia franca) sob diferentes regimes de profundidades do lençol freático, para determinação de critérios de drenagem para a cultura da manga, cultivar Keitt. O experimento seguiu um delineamento inteiramente casualizado, com quatro tratamentos (regimes de profundidades do lençol freático às distâncias do dreno de 3,5 m; 10,5 m; 17,5 m e sem presença de lençol freático) e cinco repetições. As profundidades do lençol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drenagem; Planejamento. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452002000100021 |
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| Carrieri, Alexandre de Padua. |
| This present work seeks reflection on the research works about culture in organizations. As time goes by, it can be observed that in Organizational Studies, as well as in the Organizational Theory, lies a great mosaic of research works on culture, which can be verified by the amount of authors who write about the subiect. It is on this symbolic pollution and proliferation of organizational studies on culture, that several authors lay their criticism. In Brazil, works and pieces of research on culture had gained notoriety in the late 80’s and early 90’s. Fischer & Mac-Allister (2001) report that, from the studies carried out on culture in the organizations, few actually tried to take over the challenge of associating Brazilian culture to Brazilian... |
| Tipo: Journal Article |
Palavras-chave: Culture in the Organizations; Organizational Theory (OT); Organizational Studies (OS). |
| Ano: 2002 |
URL: http://purl.umn.edu/43529 |
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| May, Gary J.; Lawrence, John D.. |
| Traditional break-even/fed cattle price projections do not provide adequate risk information to feeders, investors, lenders, and other stakeholders interested in cattle feeding decisions. The objectives of this study were two-fold: 1) develop a spreadsheet model that could estimate the net income distribution surrounding a cattle placement decision based on historical errors of futures based price forecasts, and 2) determine whether information generated from the model can be used to improve placement and marketing decisions. To accomplish objective 1, model was developed that could estimate the income distribution around a pen of cattle under a cash speculating and short hedge pricing strategy. Distribution estimates were based on 7 alternative forecast... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Livestock Production/Industries; Marketing. |
| Ano: 2002 |
URL: http://purl.umn.edu/19067 |
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| Registros recuperados: 10.260 | |
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