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A DECISION SUPPORT AID FOR BEEF CATTLE INVESTMENT USING EXPERT SYSTEMS AgEcon
Falconer, Lawrence L.; Long, Charles R.; McGrann, James M..
The beef cattle investment decision provides an excellent opportunity to increase the economic efficiency of beef cattle production. The investment questions that face beef cattle producers are of interest to beef cattle producers, educators, and financial institutions involved in lending to beef cattle producing firms. This study develops a decision support aid utilizing expert system technology to assist beef cattle producers in making well-founded investment decisions with respect to the firm's beef cattle herd.
Tipo: Journal Article Palavras-chave: Beef cattle investment; Decision support; Export systems; Livestock Production/Industries.
Ano: 1996 URL: http://purl.umn.edu/15228
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A Multi-Criteria Decision Framework for Animal Welfare Policy AgEcon
Hellstrom, J.; Bicknell, Kathryn.
Policy decisions aimed at improving farm animal welfare involve balancing several competing objectives. Not only do such decisions involve tradeoffs between social, ethical, economic and welfare considerations, animal welfare itself is a multi-dimensional concept and some husbandry practices may satisfy some welfare needs but fail to satisfy others. Multi-criteria decision analysis is a decision theoretic tool that has been used to inform decision making in fields such as environmental policy, urban and regional planning, and biosecurity – all of which are characterised by competing goals and multiple stake-holders. This paper presents a preliminary multi-criteria framework for the analysis of animal welfare policies at the national level using indoor...
Tipo: Conference Paper or Presentation Palavras-chave: Animal welfare; Multi-criteria decision analysis; Decision analysis; Decision support; Agribusiness; Farm Management; Livestock Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/115719
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A preliminary evaluation of the European Non-native Species in Aquaculture Risk Assessment Scheme applied to species listed on Annex IV of the EU Alien Species Regulation ArchiMer
Copp, G. H.; Godard, M. J.; Russell, I. C.; Peeler, E. J.; Gherardi, F.; Tricarico, E.; Miossec, Laurence; Goulletquer, Philippe; Almeida, D.; Britton, J. R.; Vilizzi, L.; Mumford, J.; Williams, C.; Reading, A.; Rees, E. M. A.; Merino-aguirre, R..
Developed for carrying out risk assessments under the European Commission (EC) Council Regulation No 708/2007 concerning the use of alien and locally absent species in aquaculture (ASR), the European Non-native Species in Aquaculture Risk Assessment Scheme (ENSARS) is briefly summarised, and the ‘Organism’ module is applied to the 24 species listed in ASR's Annex IV. Four other ENSARS modules (Infectious Agent, Facility, Pathway, and Socio-economic) were used to assess two case study species (European catfish Silurus glanis L. and red swamp crayfish Procambarus clarkii Girard). No Annex IV species was categorised as low risk, 10 as moderately low risk, 12 as medium risk, two as moderately high risk and none as high risk. The results are discussed and...
Tipo: Text Palavras-chave: Aquaculture; Biological invasions; Decision support; ENSARS; EU legislation; Risk analysis.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00189/30032/29433.pdf
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A Real Options Approach to Forest-Management Decision Making to Protect Caribou under the Threat of Extinction Ecology and Society
Morgan, Don G.; British Columbia Ministry of Forests and Range; Don.Morgan@gov.bc.ca.
Uncertainty is a dominant feature of decision making in forestry and wildlife management. Aggravating this challenge is the irreversibility of some decisions, resulting in the loss of economic opportunities or the extirpation of wildlife populations. We adapted the real options approach from economic theory to develop a methodology to evaluate a resource management decision to stop timber harvesting when a woodland caribou (Rangifer tarandus caribou) population becomes threatened with extinction. In our study area of central Labrador, Canada, both caribou and timber harvesting are valued ecosystem services. By using a decision rule, which incorporates future developments, the real options approach provides a technique to incorporate ecological and social...
Tipo: Peer-Reviewed Reports Palavras-chave: Decision support; Real options; Forest planning; Wildlife management; Caribou; Labrador.
Ano: 2008
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A Toolkit Modeling Approach for Sustainable Forest Management Planning: Achieving Balance between Science and Local Needs Ecology and Society
Sturtevant, Brian R.; Northern Research Station, U.S. Forest Service; bsturtevant@fs.fed.us; Fall, Andrew; Gowlland Technologies Ltd; fall@cs.sfu.ca; Simon, Neal P. P.; Newfoundland and Labrador Department of Natural Resources; nealsimon@gov.nl.ca; Morgan, Don G.; British Columbia Ministry of Forests; Don.Morgan@gems7.gov.bc.ca.
Tipo: Peer-Reviewed Reports Palavras-chave: Decision support; Ecosystem management; Forest sustainability; Interdisciplinary modeling; Land planning; Participatory modeling; Scaling.
Ano: 2007
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Agentenbasierte Modellierung von Landnutzungsdynamiken und Politikoptionen AgEcon
Berger, Thomas.
Agent-based modeling offers the technical opportunity to spatially integrate biophysical and socio-economic model components, thereby capturing the interactions between agricultural and environmental policy measures, land use decisions and ecological processes. Development paths in the use of resources can be calculated with the help of computer stimulations which determine the range of possible farm adjustments and policy interventions. Through coupling with global modeling systems, scenario analyses can be run to investigate the impacts of global change on land and water resources at regional and local level. This article gives an overview of agent-based modeling applied to the study of land use dynamics and policy options. It outlines an agricultural...
Tipo: Journal Article Palavras-chave: Multi-agent systems; Integrated modeling; Land and water resources; Decision support; Agricultural and environmental policy; Land Economics/Use; Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/97430
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Áreas para conservação no bioma caatinga por meio da análise de fatores biofísicos e antrópicos com a diversidade florística. Repositório Alice
COSTA, T. C. E. C. da; ACCIOLY, L. J. D. O.; OLIVEIRA, M. A. J. de; OLIVEIRA, L. M. T. de; GUIMARAES, D. P..
The flora diversity of caatinga biome was related to biophysical and human factors as an indication of conservation areas. Multicriteria analysis was used to indicate regions with favorable conditions for greater diversity, through biophysical factors, and regions with less human pressure, based on socio-economic variables extracted from agricultural census. The results were compared with inventories of flora, phyto-sociology and biomass. Some biophysical factors showed significant relationships with the diversity of flora in the caatinga. The areas indicated by these factors were analyzed in conjunction with anthropic factors, thus allowing for the identification of potential areas for conservation in the Caatinga biome.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Decision support; Biodiversity; Conservation unit; Suporte a decisão; Biodiversidade; Unidade de conservação.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/491024
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Assessing ecosystem services for informing land-use decisions: a problem-oriented approach Ecology and Society
Fricke, Roman; Faculty of Biology, Department of Animal Ecology, Philipps University of Marburg, Marburg, Germany; fricker@staff.uni-marburg.de; Kleyer, Michael; Landscape Ecology Group, Institute of Biology and Environmental Sciences, University of Oldenburg, Oldenburg, Germany; michael.kleyer@uni-oldenburg.de; Kobbe, Susanne; Department of Animal Ecology and Conservation, University of Hamburg, Biocentre Grindel, Hamburg, Germany; Susanne.Kobbe@uni-hamburg.de; Seppelt, Ralf; UFZ - Helmholtz Centre for Environmental Research, Department Computational Landscape Ecology, Leipzig, Germany; Institute of Geoscience & Geography, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany; ralf.seppelt@ufz.de; Settele, Josef; UFZ - Helmholtz Centre for Environmental Research, Department of Community Ecology, Animal Ecology and Social-Ecological Research, Halle, Germany; iDiv - German Centre for Integrative Biodiversity Research, 04103 Leipzig, Germany; josef.settele@ufz.de; Spangenberg, Joachim H.; UFZ - Helmholtz Centre for Environmental Research, Department of Community Ecology, Animal Ecology and Social-Ecological Research, Halle, Germany; Sustainable Europe Research Institute SERI Germany, Cologne, Germany; Joachim.Spangenberg@ufz.de; Tekken, Vera; Institute for Geography and Geology, Department of Sustainability Science and Applied Geography, Ernst Moritz Arndt University of Greifswald, Greifswald, Germany; vera.tekken@posteo.de; Wittmer, Heidi; UFZ - Helmholtz Centre for Environmental Research, Department Environmental Politics, Leipzig, Germany; heidi.wittmer@ufz.de.
Assessments of ecosystem services (ES), that aim at informing decisions on land management, are increasing in number around the globe. Despite selected success stories, evidence for ES information being used in decision making is weak, partly because ES assessments are found to fall short in targeting information needs by decision makers. To improve their applicability in practice, we compared existing concepts of ES assessments with focus on informing land use decisions and identified opportunities for enhancing the relevance of ES assessments for decision making. In a process of codesign, building on experience of four projects in Brazil, China, Madagascar, and Vietnam, we developed a step-wise approach for better targeting ES assessments toward...
Tipo: Peer-Reviewed article Palavras-chave: Decision support; Ecosystem services assessment; Land use; Problem-oriented.
Ano: 2015
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Assessing the Performance of Natural Resource Systems Ecology and Society
Campbell, Bruce; Center for International Forestry Research (CIFOR); b.campbell@cgiar.org; Sayer, Jeffrey A; WWF (World Wildlife Fund); jsayer@wwfint.org; Frost, Peter; Institute of Environmental Studies; pfrost@compcentre.uz.ac.zw; Vermeulen, Sonja; International Institute for Environment and Development; sonja.vermeulen@iied.org; Cunningham, Tony; World Wildlife Fund/UNESCO/Kew People and Plants Initiative; peopleplants@bigpond.com; Prabhu, Ravi; CIFOR Regional Office; r.prabhu@cgiar.org.
Assessing the performance of management is central to natural resource management, in terms of improving the efficiency of interventions in an adaptive-learning cycle. This is not simple, given that such systems generally have multiple scales of interaction and response; high frequency of nonlinearity, uncertainty, and time lags; multiple stakeholders with contrasting objectives; and a high degree of context specificity. The importance of bounding the problem and preparing a conceptual model of the system is highlighted. We suggest that the capital assets approach to livelihoods may be an appropriate organizing principle for the selection of indicators of system performance. In this approach, five capital assets are recognized: physical, financial, social,...
Tipo: Peer-Reviewed Reports Palavras-chave: Capital assets; Conceptual models; Decision support; Livelihoods; Modeling; Multivariate statistics; Natural resource systems; Performance; Zimbabwe.
Ano: 2001
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BeefSpecs a tool for the future: On-farm drafting and optimising feedlot profitability AgEcon
Walmsley, Brad; Oddy, V. Hutton; McPhee, Malcolm J.; Mayer, David G.; McKiernan, William A..
Special Edition Sheep and Cattle Production in New South Wales
Tipo: Article Palavras-chave: Beef cattle; Decision support; Body composition; Market specifications; Farm Management.
Ano: 2011 URL: http://purl.umn.edu/121460
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Coupling Biophysical and Socioeconomic Models for Coral Reef Systems in Quintana Roo, Mexican Caribbean Ecology and Society
Melbourne-Thomas, Jessica; University of Tasmania; Jessica.MelbourneThomas@utas.edu.au; Johnson, Craig R; University of Tasmania; craig.johnson@utas.edu.au; Perez, Pascal; University of Wollongong; pascal.perez@csiro.au; Eustache, Jeremy; Australian National University; jeremy.eustache@voila.fr; Fulton, Elizabeth A; CSIRO Wealth from Oceans Flagship; Beth.Fulton@csiro.au; Cleland, Deborah; Australian National University; deborah.cleland@anu.edu.au.
Transdisciplinary approaches that consider both socioeconomic and biophysical processes are central to understanding and managing rapid change in coral reef systems worldwide. To date, there have been limited attempts to couple the two sets of processes in dynamic models for coral reefs, and these attempts are confined to reef systems in developed countries. We present an approach to coupling existing biophysical and socioeconomic models for coral reef systems in the Mexican state of Quintana Roo. The biophysical model is multiscale, using dynamic equations to capture local-scale ecological processes on individual reefs, with reefs connected at regional scales by the ocean transport of larval propagules. The agent-based socioeconomic model simulates...
Tipo: Peer-Reviewed Insight Palavras-chave: Biophysical; Coral reefs; Coupled models; Decision support; Socioeconomic; Social– Ecological systems.
Ano: 2011
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Crossing Scales and Disciplines to Achieve Forest Sustainability Ecology and Society
Sturtevant, Brian; Institute for Applied Ecosystems Studies, Northern Research Station, US Forest Service; bsturtevant@fs.fed.us.
Tipo: Peer-Reviewed Synthesis Palavras-chave: Decision support; Ecosystem management; Forest sustainability; Interdisciplinary modeling; Land planning; Participatory modeling; Scaling; Sustainable forest management..
Ano: 2008
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Development of emergency response tools for accidental radiological contamination of French coastal areas ArchiMer
Duffa, Celine; Du Bois, Pascal Bailly; Caillaud, Matthieu; Charmasson, Sabine; Couvez, Celine; Didier, Damien; Dumas, Franck; Fievet, Bruno; Morillon, Mehdi; Renaud, Philippe; Thebault, Herve.
The Fukushima nuclear accident resulted in the largest ever accidental release of artificial radionuclides in coastal waters. This accident has shown the importance of marine assessment capabilities for emergency response and the need to develop tools for adequately predicting the evolution and potential impact of radioactive releases to the marine environment. The French Institute for Radiological Protection and Nuclear Safety (IRSN) equips its emergency response centre with operational tools to assist experts and decision makers in the event of accidental atmospheric releases and contamination of the terrestrial environment. The on-going project aims to develop tools for the management of marine contamination events in French coastal areas. This should...
Tipo: Text Palavras-chave: Decision support; Marine; Modelling; Radioecology; Nuclear accident.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00270/38118/36480.pdf
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Emprego de modelos matemáticos para pesquisa e gerenciamento de sistemas integrados de lavoura e pecuária. Infoteca-e
VELOSO, R. F.; BARIONI, L. G.; MARTHA JUNIOR, G. B..
ABSTRACT: Annual crops have been frequently used for the establishment and renewing of pastures in the Brazilian Cerrado. However it was only recently that cropping and cattle production have been treated as integrated systems' components. In this context, the publication shows how system concepts and its implementation through mathematical modeling can be used in the management of integrated crop-livestock production systems. Further, it is concluded that the increasing access to computers is creating great opportunities to store and spread out information to better support decision-making. It is concluded, however, that the development of computer models for integrated systems is still incipient and that closer collaboration among researchers of...
Tipo: Documentos (INFOTECA-E) Palavras-chave: Modelagem matemática; Lavoura; Pecuária; Bovino; Pastagem; Cultura anual; Sistema de suporte; Mathematical models; Plant production; Animal husbandry; Cattle; Pastures; Annual crops; Decision support.
Ano: 2003 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/569198
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Factors Influencing Farmer Adoption of Portable Computers for Site-Specific Management: A Case Study for Cotton Production AgEcon
Walton, Jonathan C.; Larson, James A.; Roberts, Roland K.; Lambert, Dayton M.; English, Burton C.; Larkin, Sherry L.; Marra, Michele C.; Martin, Steven W.; Paxton, Kenneth W.; Reeves, Jeanne M..
Personal digital assistants (PDA) and handheld global positioning systems (GPS) have become increasingly important in cotton production but little is known about their use. This research analyzed the adoption of PDA/handheld GPS devices in cotton production. A younger farmer who used a computer in farm management and had a positive perception of Extension had a greater likelihood of adopting the devices. In addition, farmers who used complementary remote sensing, plant mapping, and grid soil sampling information were more likely to use PDA/handheld GPS devices. Finally, the COTMAN in-field decision support program from Extension also positively impacted adoption.
Tipo: Journal Article Palavras-chave: Decision support; Information technology; Precision farming technology; Variable rate technology; Agribusiness; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; Teaching/Communication/Extension/Profession; D21; Q12; Q16.
Ano: 2010 URL: http://purl.umn.edu/90671
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FSDA - Free Software for Decision Analysis (SLAD - Software Livre de Apoio a Decisão): A Software Package for Data Envelopment Analysis Models. Repositório Alice
MEZA, L. A.; BIONDI NETO, L.; MELLO, J. C. C. B. S. DE; GOMES, E. G.; COELHO, P. H. G..
Data Envelopment Analysis models are based on linear programming problems (LPP) to determine the efficiency of Decision-Making Units (DMUs). This process can be computationally intense, as a LPP has to be run for each unit. Besides, a typical DEA LPP has a large number of redundant constraints concerning the inefficient DMUs. That results in degenerate LPPs and in some cases multiple efficient solutions. The developed work intends to fill out a gap in current DEA software packages, i.e., the lack of a software capable of producing full results in classic DEA models, as well as the capability of using more advanced DEA models. Basic and advanced DEA models are allowed in the package. The developed software was named as ISYDS ? Integrated System for Decision...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Software; Data envelopment analysis; Decision support.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/31372
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How Useful Are Species Distribution Models for Managing Biodiversity under Future Climates? Ecology and Society
Sinclair, Steve J; Arthur Rylah Institute, Department of Sustainability and Environment; steve.sinclair@dse.vic.gov.au; White, Matthew D; Arthur Rylah Institute, Department of Sustainability and Environment; Matt.White@dse.vic.gov.au; Newell, Graeme R; Arthur Rylah Institute, Department of Sustainability and Environment; Graeme.Newell@dse.vic.gov.au.
Climate change presents unprecedented challenges for biological conservation. Agencies are increasingly looking to modeled projections of species’ distributions under future climates to inform management strategies. As government scientists with a responsibility to communicate the best available science to our policy colleagues, we question whether current modeling approaches and outputs are practically useful. Here, we synthesize conceptual problems with species distribution models (SDMs) associated with interspecific interactions, dispersal, ecological equilibria and time lags, evolution, and the sampling of niche space. Although projected SDMs have undoubtedly been critical in alerting us to the magnitude of climate change impacts, we conclude...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Climate policy; Climatic envelope; Decision support; Distribution modeling; Niche; Spatial modeling; Species interaction..
Ano: 2010
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Modelagem difusa para suporte à decisão na descoberta de SNPs em sequências de cDNA. Repositório Alice
ARBEX, W.; CARVALHO, L. A. V. de; SILVA, M. V. B. da; YAMAGISHI, M. E. B..
Diferenças pontuais entre pares de bases de diferentes sequências alinhadas são o tipo mais comum de variabilidade genética. Tais diferenças, conhecidas como polimorfismos de base única (single nucleotide polymorphisms ? SNPs), são importantes no estudo davariabilidade das espécies, pois podem provocar alterações funcionais ou fenotípicas, as quais podem implicar em consequências evolutivas ou bioquímicas nos indivíduos das espécies. A descoberta de SNPs por algoritmos computacionais é uma prática bastante difundida e o presente texto apresenta um modelo que se baseia em lógica difusa (fuzzy logic) para, a partir de resultados prévios, auxiliar na tomada de decisão, nos casos em que as informações preliminares sejam divergentes, assim como, na confirmação...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Modelagem difusa; Inferência difusa; Descoberta de conhecimento; Polimorfismo de base única; Variabilidade genética; Lógica fuzzy; Sequências de cDNA; Descoberta de conhecimento em bases de dados; Suporte à decisão; Single nucleotide polymorphisms; FuzzyMorphic.pl.; Knowledge discovery in database; Decision support.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/513035
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Modelling the CAP Reform at the Regional Level with ProLand AgEcon
Weinmann, Bernd; Sheridan, Patrick; Schroers, Jan Ole; Kuhlmann, Friedrich.
The reform of the European Common Agricultural Policy (CAP) will fundamentally affect the decision behaviour of land users. So far transfer payments were coupled to specific forms of land use. The reform encourages land users to make decisions concerning production based solely on market aspects. The effects of the CAP reform on the Lahn Dill region in Germany are simulated with the spatially explicit land use model ProLand. The results show that land use decisions will be based stronger on site specific natural conditions than was the case in the Agenda 2000 scenario. The transfer payment volume directed into the region increases considerably.
Tipo: Conference Paper or Presentation Palavras-chave: Modelling; Decision support; Land use; Spatially explicit; Agricultural and Food Policy; Q01.
Ano: 2005 URL: http://purl.umn.edu/24508
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Reconciling complex system models and fisheries advice: Practical examples and leads ArchiMer
Lehuta, Sigrid; Girardin, Raphael; Mahevas, Stephanie; Travers-trolet, Morgane; Vermard, Youen.
The move toward an ecosystem-based fisheries management (EBFM) requires new operational tools in order to support management decisions. Among them, ecosystem- and fisheries-based models are critical to quantitatively predict the consequences of future scenarios by integrating available knowledge about the ecosystem across different scales. Despite increasing development of these complex system models in the last decades, their operational use is still currently limited in Europe. Many guidelines are already available to help the development of complex system models for advice yet they are often ignored. We identified three main impediments to the use of complex system models for decision support: (1) their very complexity which is a source of uncertainty;...
Tipo: Text Palavras-chave: Ecosystem-based fisheries management; Complex models; Decision support; Methodological solutions; Participatory modeling; Model sensitivity analysis; Examples.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00358/46945/46851.pdf
Registros recuperados: 25
Primeira ... 12 ... Última
 

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