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| Registros recuperados: 28 | |
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| Laxminarayan, Ramanan. |
| In the past, malaria control efforts in sub-Saharan Africa have relied on a combination of vector control and effective treatment using chloroquine. With increasing resistance to chloroquine, attention has now turned to alternative treatment strategies to replace this failing drug. Although there are strong theoretical arguments in favor of switching to more expensive artemisinin-based combination treatments (ACTs), the validity of these arguments in the face of financial constraints has not been previously analyzed. In this paper, we use a Bioeconomic model of malaria transmission and evolution of drug resistance to examine questions of optimal treatment strategy and coverage when drug resistance places an additional constraint on choices available to the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Malaria; Mathematical models; Drug resistance; Bioeconomics; Health Economics and Policy; I10; I19; C61. |
| Ano: 2003 |
URL: http://purl.umn.edu/10699 |
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| Burnett, Kimberly M.; Kaiser, Brooks A.; Pitafi, Basharat A.K.; Roumasset, James A.. |
| Invasive species change ecosystems and the economic services such ecosystems provide. Optimal policy will minimize the expected damages and costs of prevention and control. We seek to explain policy outcomes as a function of biological and economic factors, using the case of Hawaii to illustrate. First, we consider an existing invader, Miconia calvescens, a plant with the potential to reduce biodiversity, soil cover, and water availability. We then examine an imminent threat, the potential arrival of the Brown treesnake (Boiga irregularis). The arrival of the snake in Guam has led to native bird extirpations, power outages, and health costs. |
| Tipo: Journal Article |
Palavras-chave: Invasive species; Bioeconomics; Optimal control; Miconia calvescens; Boiga; Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/10178 |
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| Hean, Robyn L.; Cacho, Oscar J.; Signor, Anthony; Mullen, John D.. |
| The focus of this paper is the role of farm forestry in farming systems in the NSW wheatsheep zone. The wheat-sheep zone suffers from significant land degradation problems, and the environmental and economical sustainability of many farming systems is in question. Farm forestry provides the opportunity to diversify farmer incomes, increase agricultural productivity and provide environmental solutions. It is therefore proposed that the potential role of farm forestry in the wheat-sheep zone is to provide an environmentally and economically sustainable future for farming systems, through tree planting for multiple benefits. A general model is developed for the purpose of economic analysis of agroforestry systems in the wheat-sheep zone using a bioeconomic... |
| Tipo: Presentation |
Palavras-chave: Farm forestry; Farming systems; Bioeconomics; Resource /Energy Economics and Policy. |
| Ano: 2000 |
URL: http://purl.umn.edu/123659 |
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| Buhle, Eric; Margolis, Michael; Ruesink, Jennifer L.. |
| Strategies for controlling invasive species can be aimed at any or all of the stages in the life cycle. In this paper we show how to combine biological data on population dynamics with simple economic data on control cost options to determine the least costly set of strategies that will halt an invasion. We then apply our methods to oyster drills (Ocinebrellus inornatus), an economically important aquaculture pest that has been accidentally introduced worldwide. If the costs of intervention were the same across life stages, extermination of adults would be an inefficient way to control species with the population dynamics characteristics of invaders. In the oyster drill case, however, efficient control targets adults because they are much easier to find. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Invasive species; Bioeconomics; Control strategies; Environmental Economics and Policy; Q10; Q2; Q22. |
| Ano: 2004 |
URL: http://purl.umn.edu/10793 |
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| Hean, Robyn L.; Cacho, Oscar J.. |
| Giant-clam farming is undertaken by coastal villagers in Solomon Islands as part of a research and development project of the International Center for Living Aquatic Resources Management (ICLARM). The production technology is simple and does not require a large capital investment. The main inputs are clam seed, labour and time. Labour is used for activities such as seeding, cleaning, thinning and harvesting. In this paper, a bioeconomic model is used to explore optimal farm management. The theoretical basis for this analysis is found in the economic theory of optimal forestry exploitation. The management variables considered are husbandry applied to cleaning and the frequency with which thinning is undertaken. The optimal cycle-length is determined... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Bioeconomics; Giant clams; Subsistence mariculture; Farm Management. |
| Ano: 1999 |
URL: http://purl.umn.edu/12935 |
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| Greenville, Jared W.; MacAulay, T. Gordon. |
| The use of marine protected areas as a fishery management tool has been suggested as a hedge against management failures and variation in harvests. A stochastic bioeconomic model of a hypothetical predator–prey fishery is used to test the performance of protected areas in a fishery with heterogenous environments. Protected areas are analysed under density-dependent and sink-source dispersal relationships between the subpopulations that occur within the fishery. Differing management structures governing resource extraction are analysed. The focus of the study is placed on the biological and management characteristics that yield benefits to both fishers and society. It is shown that the establishment of a protected area improves fishery rent and lowers... |
| Tipo: Journal Article |
Palavras-chave: Bioeconomics; Fisheries management; Marine protected areas; Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/116924 |
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| Greenville, Jared W.; MacAulay, T. Gordon. |
| Protected areas in fishery management have been suggested to hedge management failures and variation in harvests. In this paper, a stochastic bioeconomic model of a two-species fishery in the Manning Bioregion is used to test the performance of protected areas as a management tool in a fishery. The establishment of a protected area is analysed under the assumption of heterogenous environments that are linked via density-dependent or sink-source stock dispersal relationships. The sensitivity of the results to different degrees of management is also explored. The model is applied to the Ocean Prawn Trawl, and Ocean Trap and Line fisheries within Manning Bioregion in New South Wales, Australia. The focus of the study is placed on the biological and... |
| Tipo: Article |
Palavras-chave: Bioeconomics; Fisheries management; Marine protected areas; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/118521 |
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| Registros recuperados: 28 | |
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