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| Registros recuperados: 2.489 | |
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| Ng, P.K.L.; Sasekumar, A.. |
| A new species of porcellanid crab, Polyonyx vermicola, belonging to the P. sinensis group is described from Selangor, Peninsular Malaysia. The species is an obligate commensal of tubes of the chaetopterid worm Sasekumaria selangora Rullier, 1976 (Polychaeta). Polyonyx vermicola is differentiated from all congeners by its small size, possessing a more rectangular carapace, proportionately longer carpus on the larger cheliped, strongly gaping cheliped fingers, the tips of which are turned outwards, the outer surface of each cheliped fingers lined with a row of small granules, and having the ventral margin of the third ambulatory propodus armed with strong spinules. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Decapoda; Porcellanidae; Polyonyx vermicola spec. nov.; Chaetopteridae; Polychaeta; Worm commensal; Peninsular Malaysia; 42.74. |
| Ano: 1993 |
URL: http://www.repository.naturalis.nl/record/318927 |
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| SANTOS-SILVA,Edinaldo Nelson dos; ROBERTSON,Barbara. |
| A new species of Calanoid copepod, Rhacodiaptomus besti,is described from material collected in the Igarapé São Pedro, Rio Jamari, State of Rondônia, and Lago Amanã, Rio Japurá, State of Amazonas, in Western Amazonia. A detailed morphological analysis of the species was undertaken in order to provide a basis for future studies on inter and intrageneric relationships. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calanoid copepod; Rhacodiaptomus; Amazon Basin; Brazil. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671993000100095 |
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| Caputo, Michael R.; Lynch, Lori. |
| In the spirit of Leamer's commitment to sensitivity analysis, we employ Farrell's nonparametric efficiency methodology and compare our results with those of Sexton, Wilson, and Wann. Testing the implicit assumption of technical efficiency in the methodology employed by Sexton, Wilson, and Wann, we find that the lack of technical efficiency is the cotton gins' main cause of overall inefficiency. We extend the nonparametric methodology by subjecting the shadow prices of technical efficiency to nonparametric statistical tests to draw stronger conclusions. In addition, the nonparametric methodology permits us to make gin-specific recommendations to improve the performance of the gins. |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 1993 |
URL: http://purl.umn.edu/30966 |
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| Batterham, Robert L.; Drynan, Ross G.; Oarke, D.K.; Carter, P.H.. |
| Single-index models from portfolio theory have previously been adapted for risk efficient farm planning in North America. The potential for using single-index models in farm planning is considered in this paper both theoretically and in the light of two illustrative Australian case studies. It is concluded that single-index models have no significant computational or other advantages over full quadratic programming portfolio selection models for farm planning and may produce relatively poor plans and poor assessments of the risks associated with those plans. |
| Tipo: Journal Article |
Palavras-chave: Farm Management; Risk and Uncertainty. |
| Ano: 1993 |
URL: http://purl.umn.edu/9627 |
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| Ahmadi-Esfahani, Fredoun Z.; Jensen, Paul H.. |
| As a signatory of the General Agreement on Tariffs and Trade (GATT), Australia is permitted to impose duties on goods that have been imported below 'normal value' and have caused or threatened to cause 'material injury' to the domestic industry producing 'like goods'. There has been a recent push from various industries to increase protection for producers who have been injured by such practices. The Government is concerned, however, that harsher anti-dumping regulations will damage its position in the Uruguay Round of the GATT negotiations. As a result, a Senate Inquiry was established in 1990 to review Australia's anti-dumping legislation. The objective of this paper is to examine the effectiveness of the public policy process in addressing this issue.... |
| Tipo: Journal Article |
Palavras-chave: International Relations/Trade. |
| Ano: 1993 |
URL: http://purl.umn.edu/9628 |
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| Catanzano, Joseph; Cunningham, S. |
| Over the relatively recent past, bioeconomic modelling has advanced by integrating major theoretical and analytical progress made in both economic and biological modelling. The movements from static towards dynamic models and from global towards analytical models were the first steps in this advance. More recently, research has turned towards veritable optimisation models incorporating risk, asymmetrical information, and chaotic and multiple equilibria. Attempts to validate such models have been based on case studies of more and more homogenous fisheries (jesmall numbers of stocks and exploitation systems) so that the objective function is quite explicit and limited. This change of emphasis has occurred however without a re-consideration of the aim of the... |
| Tipo: Text |
Palavras-chave: SEM. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/1993/acte-4217.pdf |
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| Ly, Ln; Kantha, Lh. |
| A three-dimensional, primitive equation, ocean general circulation model is used to study the response of the Gulf of Mexico to Hurricane Camille (1969). The free-surface dynamics and the mixed-layer features are included in the model. The numerical model incorporates the realistic coastline and bottom topography. The sigma coordinate model has eighteen levels in the vertical and 0.2-degrees x 0.2-degrees horizontal resolution for the entire gulf. The study focuses on nonlinear interaction between hurricane induced currents and the Loop Current. The numerical simulations show that there is a strong nonlinear interaction between the hurricane and the Loop Current in the southern and central parts of the eastern gulf. The surface currents due to nonlinear... |
| Tipo: Text |
Palavras-chave: COASTAL CIRCULATION; OCEAN MODELING; RESPONSE TO A HURRICANE; HURRICANE CURRENTS; COASTAL SIMULATION. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00099/21060/18686.pdf |
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| Registros recuperados: 2.489 | |
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