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| Registros recuperados: 12.472 | |
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| Leite,Rosseval Galdino. |
| Estudou-se a dieta de 44 exemplares de juvenis de Brycon amazonicum (de 15 a 50mm de C.P), em áreas inundadas da Ilha de Marchantaria, no rio Solimões. Os peixes foram capturados com rede-de-mão com 30cm de diâmetro e cabo de 2 metros de comprimento. As análises foram baseadas em Freqüência de Ocorrência (%) e no número de presas. A dieta foi analisada pelo tamanho (C.P. (mm)) e por data de captura usando uma ANOVA com dois fatores. A data de captura explicou a oscilação no número de presas ingeridas pelos juvenis. A análise qualitativa mostrou poucas mudanças na dieta nesta fase de desenvolvimento. Verificou-se que B. amazonicum apresenta amplo espectro alimentar e que regula o número de presas na dieta de acordo com a disponibilidade dessas presas no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazônia; Peixes; Brycon amazonicum; Alimentação; Áreas inundadas. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000400018 |
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| Barros, Francisco Savio de Oliveira; Forte, Sergio Henrique Arruda Cavalcante. |
| The managerial strategy thematic has been the object of a growing concern and studies in the academic literature, however few studies have been observed about the enterprising strategies. Thus, the main objective of this study is to identify the main characteristics of the process of strategy formation in companies of the enterprising context, relating them with the conceptual premises of the Enterprising Strategy School, as presented by Mintzberg et al (2000), using a field verification in small load companies in the food sector, with head offices in the city of Fortaleza. For this exploratory-descriptive study, accomplished during 2003, the primary data were collected through semistructured interviews with entrepreneurs and managers of the companies and... |
| Tipo: Journal Article |
Palavras-chave: Enterprising strategy; Managerial strategy; Enterprising context. |
| Ano: 2004 |
URL: http://purl.umn.edu/43680 |
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| Luz,José Roberto Pujol. |
| The acrocerids (small headed-flies) form a small group of flies, which are difficult to find and observe. They are rare in collections. Their larvae are heteromorphic parasitoids of many families of spiders and their imagoes show a great deal of morphological variation. Little is known about the biology and systematics of this group in the Neotropical region, especially the Philopotinae. Most studies are based on species from Europe and North America. The Philopotinae occurs througout the world, and are characterized by the strongly developed postpronota, which form a shield dorsally in front of the scutum. Fifty specimens of Philopota sp. were collected from branches of Stachytarphetta cayenensis (Verbenaceae) in the Ilha da Marambaia (23º 04' S - 43º 53'... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Philopotinae; Verbenaceae; Atlantic Rain Forest; Hill-topping; Brazil. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0328-03812004000400010 |
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| Rahman, Shaikh Mahfuzur; Dorfman, Jeffrey H.; Turner, Steven C.. |
| Cottonseed crushers face substantial risk in terms of input and output price variability and they are limited in their planning by the lack of a viable futures contract for cottonseed or cottonseed products. This study examines the feasibility of cross-hedging cottonseed products using the soybean complex futures. Different cross-hedging strategies are evaluated for eight time horizons relative to the expected profit and utility of the crusher. A Bayesian approach is employed to estimate both model parameters and optimal hedge ratios, allowing consistency with expected utility maximization in the presence of estimation risk. The results reveal that both whole cottonseed and cottonseed products can be successfully cross-hedged using soybean complex futures.... |
| Tipo: Journal Article |
Palavras-chave: Bayesian decision science; Cottonseed; Cross-hedging; Risk management; Crop Production/Industries. |
| Ano: 2004 |
URL: http://purl.umn.edu/31114 |
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| Ghose, Ananda; Hawkins, Chris. |
| American foulbrood (AFB) is considered the most significant brood disease of bees in Western Australia. The Department of Agriculture of Western Australia (DAWA) provides assistance to apiarists by way of quarantine and surveillance measures under the AFB control program. A bio-economic evaluation was considered necessary by the department for setting future policy direction. As a way forward, a number of risk analysis scenarios were simulated to estimate the future prevalence rate of AFB in the absence of the present program. This epidemiological investigation was complemented by an economic evaluation which identifies the extent of benefit that flows through to direct beneficiaries. The paper provides a comprehensive bio-economic analysis and suggests... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/58449 |
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| Whitten, Stuart M.; Bennett, Jeffrey W.. |
| Wetland ecosystems on privately owned farms such as those on the Murrumbidgee River Floodplain in the state of New South Wales, Australia provide a mix of potentially valuable outputs to their owners and the wider community. The mix of values generated is dependent on the biophysical status of the wetlands, which in-turn, is dependent on the land management in and around these multiple-output ecosystems. Despite the range of private and public values generated, management decisions are based primarily on the private values that landowners receive. These private land management decisions also affect social values. Hence, there is potentially a demand for public policy to influence decisions based on the social values wetlands generate. This paper... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use. |
| Ano: 2004 |
URL: http://purl.umn.edu/20122 |
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| Registros recuperados: 12.472 | |
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