|
|
|
| Registros recuperados: 3.035 | |
|
|
| Souter, Ray A.; Bowker, James Michael. |
| It is a generally known statistical fact that the mean of a nonlinear function of a set of random variables is not equivalent to the function evaluated at the means of the variables. However, in dichotomous choice contingent valuation studies a common practice is to calculate an overall mean (or median) by integrating over offer space (numerically or analytically) an estimated logit or probit function in which sample mean values for the concomitant variables are used. We demonstrate this procedure to be incorrect and we statically test the procedure against the correct method for nonlinear models. Using data resulting in a well-behaved logit model, we reject the hypothesis of congruence between the two means. Such a finding should be considered in... |
| Tipo: Journal Article |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 1996 |
URL: http://purl.umn.edu/31649 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Fleury, Pierre-gildas; Mingant, Christian; Castillo, A. |
| In order to have a better understanding of recessing in great scallop, Pecten maximus and consequently the causes of mortality at reseeding, this study has monitored, at different seasons, the dispersion and recessing of different sizes of juveniles (about 15, 30 and 45 mm, called small, medium and large) after seeding. Moreover, the aim was to see when small spat (15 mm) could be seeded, and thus reduce the costs of intermediate culture. Three monitoring approaches were used together: (1) continual observations by remote video camera, of a defined area (less than 1 m2) containing 10 scallops from each size group; (2) daily monitoring of behaviour with divers along three bottom lines, with 20 × 1 m2 plots each and nine marked scallops per plot; and (3) the... |
| Tipo: Text |
Palavras-chave: Behaviour; Great scallop (Pecten maximus); Season; Seeding; Size; Vitality of spat. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00326/43752/43284.pdf |
| |
|
|
| Langeloh,Augusto. |
| Este artigo revisa a questão da prescrição dos medicamentos, no exercício da clínica veterinária, ressaltando as dificuldades e/ou problemas que podem resultar da existência de diversos nomes atribuídos a um mesmo fármaco. Os fármacos tem várias denominações: o nome químico, os nomes genéricos e o nome comercial. Cada fármaco pode estar presente em mais de uma especialidade farmacêutica produzida pelas diversas indústrias farmacêuticas e recebe uma denominação comercial distinta. Uma portaria ministerial aprovou as Denominações Comuns Brasileiras baseadas na terminologia recomendada pela Organização Mundial da Saúde para o nome genérico dos fármacos. mas parte da indústria farmacêutica de medicamentos de uso médico veterinário ainda não emprega a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nome genérico; Nome químico; Nome comercial; Nomes de fármacos; Prescrição; Receita. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781996000200026 |
| |
|
|
| Schweikhardt, David B.; Batie, Sandra S.; Doering, Otto C., III; Jones, Bob F.. |
| The U.S. House of Representatives and Senate have written farm bills that contain major revisions in farm commodity programs. Differences in these bills, House bill HR 2854 and Senate bill S 1541, must now be resolved by a Conference Committee, approved by a final vote of both houses of Congress, and signed by the President. Though differences in the bills do exist, the bills contain many similar provisions that appear likely to be included in the final version of the bill. This paper summarizes the major provisions of these bills and identifies areas where differences must be resolved by the Conference Committee. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 1996 |
URL: http://purl.umn.edu/11609 |
| |
|
| |
|
| |
|
|
| Litvaitis, M.K.; Curini-Galletti, M.C.; Martens, P.M.; Kocher, T.D.. |
| The current classification system for the Monocelididae which is based on the character "presence or absence of an accessory prostatoid organ" divides the family into two subfamilies, namely the Minoninae and the Monocelididinae. However, other characters relating to the structure of the male copulatory bulb and to karyotypes do not support this division. Monocelidid male copulatory bulbs can be either of the simplex or the duplex-type, and if this character is mapped onto the current classification, then both subfamilies contain species with either type of copulatory bulb. We therefore decided to construct an independent phylogeny for the Monocelididae using nucleotide-sequence data of the gene coding for the 26/28S rDNA. Distance and parsimony-based... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; Monocelididae. |
| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3015 |
| |
|
|
| Hove, Harry A. ten; Nishi, Eijiroh. |
| Spirobranchus corrugatus, a little known species, is redescribed based on ample material from Australia, Indonesia, Japan and the Seychelles. The species is characterized by a seemingly porous tube, sunk into the substrate. Characteristically, the opercular plate shows a number of radial ridges on its distal surface, resembling Middle Miocene microfossils from Poland. The ventral rim of the opercular bulb of Sp. corrugatus bears numerous ocelli, with single lenses. A comparison with similar species is given. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Polychaeta; Serpulidae; Indo-Pacific; Miocene; Poland. |
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/505214 |
| |
|
|
| Mohanty, Samarendu; Meyers, William H.; Smith, Darnell B.. |
| This paper examines price relationships in the international wheat market using a cointegration and error correction approach. Price series are found to be first difference stationary and cointegrated. Our results provide evidence that the United States, Australia, the European Union, and Argentina react to Canada's pricing decisions whereas Canada does not respond to any other price changes except Australia's. Similarly, the United States also plays a strong role in the pricing of other exporters (except Canada) and its U.S. pricing decision is affected by changes in Canadian and Australian prices. The remaining exporters such as the European Union and Argentina respond to the U.S. and Canadian price changes but do not have any influence on other prices.... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Demand and Price Analysis; International Relations/Trade. |
| Ano: 1996 |
URL: http://purl.umn.edu/18354 |
| |
|
|
| Ridsdale, C.E.. |
| The present paper reviews the genus Aidia s.l. (including Anomanthodia and Gynopachis) in Southeast Asia and Malesia. Relationships to Pelagodendron are discussed. The taxonomic variation of characters within the genus is reviewed. In this review 16 new species and 2 new varieties are described, and 14 new species combinations are made in Aidia. Aidiopsis orophila and Fagerlindia canthoides are new combinations in the respective genera. A complete index of names is given. |
| Tipo: Article / Letter to the editor |
|
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/524512 |
| |
|
|
| Burton, Diana M.; Love, H. Alan. |
| Price expectations play a critical role in commodity markets where producers must make input decisions well before output is realized. This paper brings together alternative expectations regimes, their estimation, and hypothesis tests for use in structural commodity models to determine their use by commodity producers. Extrapolative mechanisms and rational expectations are considered under risk neutrality and risk aversion. The assumptions implicit in the use of aggregate data in these models are made explicit. Structural models using individual survey data are discussed. While Muth's rational expectations hypothesis has found widespread acceptance in the macroeconomic literature, empirical results from industry studies indicate that commodity... |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1996 |
URL: http://purl.umn.edu/31417 |
| |
|
|
| Hearne, Robert R.. |
| Environmental economics has an extensive literature on procedures for placing economic values on the environment. Most of these methodologies have been developed and refined in the context of developed countries, where high levels of disposable income allow for a high demand for environmental amenities and a willingness to pay for non-use values. This paper argues that the applicability of these methodologies may be limited in developing countries. A microeconomic model, designed to highlight the different roles of environmental goods and services in developed and developing counties, is presented. In developing countries the value of environmental amenities is relatively less important than the value of environmental resources in the production process.... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental Economics and Policy; International Development. |
| Ano: 1996 |
URL: http://purl.umn.edu/24144 |
| |
|
|
| Hersh, Robert. |
| This report describes the reasons why integrated pollution control (IPC) became accepted as a necessary part of the environmental regulatory systems of the Netherlands, the United Kingdom, and Sweden and examines the experience these countries have had with unified environmental statutes, alternative compliance approaches, cross-media permitting, and other aspects of IPC that are under consideration in this country. The report is organized into five sections. In the first section we provide a brief overview of the intellectual pedigree of integrated pollution control, and discuss arguments that have been put forward by advocates of IPC as well as the counter-arguments of those who have taken a more skeptical view of the technical and political feasibility... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Integrated pollution control; European environmental policy; Environmental compliance and enforcement; Environmental Economics and Policy. |
| Ano: 1996 |
URL: http://purl.umn.edu/10792 |
| |
|
|
| Pearce, J.. |
| This paper presents a review of the tuna fishery within the 200-mile Fisheries Conservation and Management Zone (FCMZ) of the British Indian Ocean Territory (BIOT) (Chagos Archipelago), over the period 1991 to 1995. Particular emphasis is placed on the most recent fishing seasons 1993-1994 and 1994-1995. Fishing inside the BIOT FCMZ has been dominated by distant-water fishing nations. Longliners from Japan, Korea and Taiwan have fished in the area around the Chagos Archipelago for many years. Purseseine vessels have operated in the area since the early 1980s. Some records of driftnetting also exist prior to the ban on driftnetting in 1992. The tuna fishery inside the zone is highly seasonal and highly variable. Longline vessels typically operate during two... |
| Tipo: Preprint |
Palavras-chave: Tuna fisheries; Purse seines. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/497 |
| |
|
|
| Ajao, E.A.; Oyewo, E.O.; Unyimadu, J.P.. |
| The coastal waters in Nigeria are described in relation to the general morphology, vegetation and beach Type along the 850km coastal. The environmental sensitivity of the fragile Niger delta ecosystem is expressed by the numerous estuaries, rivers, creeks, lacustrine and inshore waters which support freshwater and brackish water mangrove swamps. Ocean resources exploited from the Niger delta and adjacent Continental platform include oil, gas and fishes. The general hydrograph and superfial circulation are described against the background of human activities in coastal settlements and developmental pressures for resource utilisation giving rise to water pollution. Micropollutants identified and measured so far include organic waste, trace heavy metals... |
| Tipo: Report |
Palavras-chave: Marine pollution. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/2214 |
| |
| Registros recuperados: 3.035 | |
|
|
|
