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An overview on the use of precautionary approach and tuna management ArchiMer
Fonteneau, Alain; Fromentin, Jean-marc.
This paper develops a critical overview of the various problems and uncertainties faced in tuna stock assessment, management and conservation. This presentation is based on Atlantic tunas, but also on various tuna stocks worldwide. Tuna jisheries management is characterized by major uncertainties in the stock assessment; since these stock assessments are always done only on jishery data which are often biased. Fortunately most tuna stocks are showing a strong resistance to overfishing. These major characteristics of tuna stocks and jisheries, and the bias in the scientific analysis, are presented and discussed. As a result, many of the reference point recommended for the precautionary approach applied to jisheries are often quite inappropriate for tuna...
Tipo: Text Palavras-chave: Tunas; Precautionay approach; Atlantic; Management; Assessment.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00194/30564/28984.pdf
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Sardine series in PELGAS surveys : PELGAS 2000 to 2005 ArchiMer
Masse, Jacques; Duhamel, Erwan; Delaunay, Damien.
Survey data from 2000 to 2004 were used to analyse whether sardine show a preferential distribution in relation to bottom depth and/or latitude. For this analysis, four strata were considered; North or South of latitude 46°N (separating VIIIa and VIIIb) and bottom depths deeper or shallower than 110m. Sardine length distributions are plotted as the proportion of small (< 18.5 cm) or big (larger than 18.5 cm) fish on the samples over the years. This division was chosen to take into account the bimodal structure of sardine length distributions (usually with a "valley" at 18.5 cm fish length). Small fish (mainly 1 year old) are generally found close to the coast and preferentially in the southern part. The year 2003 is different to the others but this year...
Tipo: Text Palavras-chave: Assessment; Sardine; Bay of Biscay; Acoustic; Survey; ICES; PELGAS; Estimation de stock; Sardine; Golfe de Gascogne; Acoustique; Campagne océanographique; CIEM; PELGAS.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-2294.pdf
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Evaluation du stock de coquilles Saint-Jacques de la Baie de Seine et du Proche Extérieur. COMOR 32 (8-23 juillet 2002) ArchiMer
Foucher, Eric.
Scientific scallop surveys called COMOR are carried out in the bay of Seine since 1976. Results are used by fishermen’ associations and by fishing administration to lead management measures. In this report, the scientific results of the survey COMOR 32 realised in July 2002 are described. Abundance and growth indices for scallop, by age and area, are presented. During these surveys, data about most abundant benthic species are also collected since 1998. A first assessment with five years data is made here. A global descriptive analysis is undertaken about all the species present on scallops grounds. A special zoom is applied on both species whitch could be exploited (whelk Buccinum undatum and queen scallop Aequipecten opercularis) and three competitive...
Tipo: Text Palavras-chave: Coquille Saint-Jacques; Pecten maximus; Baie de Seine; Évaluation directe; Stock; Diagnostic; Scallop survey; Pecten maximus; Bay of Seine; Assessment; Stock.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00341/45178/44575.pdf
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Direct assessment of anchovy by the PELGAS05 acoustic survey ArchiMer
Masse, Jacques; Beillois, Pierre; Duhamel, Erwan.
An acoustic survey was carried out in the bay of Biscay from May 3rd to June 1st on board the French research vessel Thalassa. The objective of PELGAS05 survey was to study the abundance and distribution of pelagic fish in the Bay of Biscay. The target species were mainly anchovy and sardine and were considered in a multi-specific context. The results have to be used during ICES working groups in charge of the assessment of sardine, anchovy, mackerel and horse mackerel and in the frame of the Ifremer fisheries ecology program "resources variability".
Tipo: Text Palavras-chave: Assessment; Bay of Biscay; CUFES; Anchovy; Acoustic; Survey; ICES; PELGAS; Estimation de stock; Golfe de Gascogne; CUFES; Anchois; Acoustique; Campagne oceanographique; CIEM; PELGAS.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-2293.pdf
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Inventory and conservation of endangered, endemic and economically important flora of Hamiguitan Range, southern Philippines . Naturalis
Amoroso, V.B.; Obsioma, L.D.; Arlalejo, J.B.; Aspiras, R.A.; Capili, D.P.; Polizon, J.J.A.; E.B. Sumile.
This research was conducted to inventory and assess the flora of Mt Hamiguitan. Field reconnaissance and transect walk showed four vegetation types, namely: dipterocarp, montane, typical mossy and mossy-pygmy forests. Inventory of plants showed a total of 878 species, 342 genera and 136 families. Of these, 698 were angiosperms, 25 gymnosperms, 41 ferns and 14 fern allies. Assessment of conservation status revealed 163 endemic, 34 threatened, 33 rare and 204 economically important species. Noteworthy findings include 8 species as new record in Mindanao and one species as new record in the Philippines. Density of threatened species is highest in the dipterocarp forest and decreases at higher elevation. Species richness was highest in the montane forest and...
Tipo: Article / Letter to the editor Palavras-chave: Assessment; Diversity; Philippines protected area; Vegetation types.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/525755
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Influence of Course Delivery Method and Proctoring on Performance in Introductory Economics AgEcon
Wachenheim, Cheryl J..
This work was published in the Review of Agricultural Economics. See Wachenheim, C.J. 2009. Final Exam Scores in Introductory Economics Courses: Effect of Course Delivery Method and Proctoring. Review of Agricultural Economics 31(3), pp. 640-652.
Tipo: Conference Paper or Presentation Palavras-chave: Online; Assessment; Education; Economics; Teaching/Communication/Extension/Profession.
Ano: 2011 URL: http://purl.umn.edu/103165
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ONLINE ASSESSMENT: THE VALUE OF A FRIEND'S ASSISTANCE AgEcon
Gustafson, Cole R..
The availability of online computerized assessments is increasing, especially for economics principles courses. A severe limitation of online assessments is the possibility of cheating. Scant information is available on student preferences, behavior, and learning that is accomplished when online assessments are completed either independently or in team settings. This study investigates the performance of students in a macro-economics principles course that recently adopted online assessment with an "open book, open friend" policy. Several strategies were developed that encouraged students to learn the material independently. Data were collected throughout the semester to quantify the number of students who actually did have a friend assist them...
Tipo: Working or Discussion Paper Palavras-chave: Assessment; Plagiarism; Cheating; Online; Teams; Teaching/Communication/Extension/Profession.
Ano: 2002 URL: http://purl.umn.edu/23659
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MICRODIAGNÓSTICO DAS ÁREAS RURAIS DE INTERESSE ECONÔMICO E ASSENTAMENTOS DA BARRAGEM DO CASTANHÃO NO ESTADO DO CEARÁ AgEcon
Campos, Roberio Telmo; Campos, Kilmer Coelho.
Objetiva-se conhecer as facilidades e/ou dificuldades enfrentadas pelos produtores, os entraves à organização social, as dificuldades para praticar atividades irrigadas, as principais razões para a não exploração de mais terras e tendências futuras apontadas pelos produtores situados nos perímetros e assentamentos do entorno da barragem do Açude Castanhão, no vale do Jaguaribe, no Estado do Ceará. Os dados são provenientes de pesquisa direta, coletados por meio de aplicação de questionários. Utilizam-se o método descritivo para análise e discussão dos resultados, após cálculos de freqüências, tabelas e outras informações estatísticas selecionadas. Os principais problemas apontados pelos produtores dos perímetros são a falta de capital de giro, seguido pela...
Tipo: Conference Paper or Presentation Palavras-chave: Diagnóstico; Produção agrícola; Problemas e ameaças; Açude Castanhão; Assessment; Agricultural production; Problems and threat; Castanhão Dam; Community/Rural/Urban Development.
Ano: 2008 URL: http://purl.umn.edu/108095
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Learning from Assessment: Effect of Changes in an Online Course on Students' Perceptions and Performance AgEcon
Wachenheim, Cheryl J..
Student satisfaction with, and performance in, a first-offer online agrisales course was compared with that of students enrolled in a simultaneously-taught classroom course. Online and classroom students were equally satisfied with the course and the instructor using most measures, and student overall performance did not differ. However, online students tended to do better on exams while classroom students demonstrated a greater ability to apply course concepts to a practical setting. Changes were made in the online course to improve student understanding of and ability to apply course concepts. Specifically, online student exams were no longer open-note / open-book and were proctored. On-campus online students also participated in their final sales...
Tipo: Report Palavras-chave: Agricultural sales; Assessment; Distance education; Online; Teaching/Communication/Extension/Profession.
Ano: 2007 URL: http://purl.umn.edu/7640
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HOW AN ONLINE COURSE COMPARES AgEcon
Wachenheim, Cheryl J..
Student satisfaction with and performance in an online agrisales course is compared with that of students enrolled in a simultaneously-taught classroom course. Assessment tools are developed for both sections. Online and classroom students were equally satisfied with the course and the instructor using most measures, but had different motives for course enrollment. Overall student performance did not differ. However, online students tended to do better on exams and homework assignments while classroom students demonstrated a greater ability to apply course concepts to a practical setting. Results suggest instructors be well-prepared to handle unique learner situations prior to marketing an online course and work to ensure students are motivated to...
Tipo: Working or Discussion Paper Palavras-chave: Agricultural sales; Assessment; Curriculum; Online; Teaching; Teaching/Communication/Extension/Profession.
Ano: 2003 URL: http://purl.umn.edu/23650
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The use of operations research as a tool for monitoring and managing food-assisted maternal/child health nutrition (MCHN) programs: An example from Haiti AgEcon
Loechl, Cornelia U.; Ruel, Marie T.; Pelto, Gretel H.; Menon, Purnima.
This report describes the methods and results of an operations research undertaken to assess the effectiveness of World Vision (WV)’s food assisted maternal and child health and nutrition (MCHN) program in the Central Plateau region of Haiti. The research had three main objectives: (1) to assess the effectiveness of implementation and operations of the program relative to plans; (2) to assess the quality of delivery of the various services; and (3) to explore the perceptions of different stakeholders (i.e., beneficiaries and field implementers) regarding program operations and service delivery and the motivational factors that may affect staff’s performance and job satisfaction. The overall goal was to identify constraints to effective operations; it was...
Tipo: Working or Discussion Paper Palavras-chave: Caribbean; Latin America and the Caribbean; Operations research; Nutrition programs; Food aid; Children; Maternal and infant welfare; Assessment; Health and hygiene; Haiti; Developing Countries; Food Security and Poverty.
Ano: 2005 URL: http://purl.umn.edu/59691
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ACIAR’s 25 year investment in fruit-fly research AgEcon
Lindner, Robert K.; McLeod, Paul.
Fruit flies are recognised as one of the major pests of fruit and vegetable crops worldwide. Potential benefits from fruit fly research include biosecurity benefits from better quarantine surveillance that reduces the costs of an incursion by a damaging exotic pest fruit fly; market access benefits by enabling new fruit exports; and field control benefits from better crop management. The Australian Centre for International Agricultural Research (ACIAR)’s investment in fruitfly research goes back some 25 years to an initial project in Malaysia. Since that time, ACIAR’s continued investment has funded a total of 18 projects ranging across several areas of fruit-fly research, and covering Malaysia, Thailand, Philippines, Fiji Islands, Samoa, Tonga, Cook...
Tipo: Conference Paper or Presentation Palavras-chave: ACIAR; Fruit-fly; Research; Impact; Assessment; Crop Production/Industries.
Ano: 2009 URL: http://purl.umn.edu/47617
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DO COLLEGE STUDENTS LEARN BY CORRECTING MISSED EXAM QUESTIONS? AgEcon
Schroeter, Christiane; Green, V. Steven; Bess, Erin.
This study determines the learning benefit of correcting missed exam questions. The results show that in addition to exams being an assessment tool, they can also be used as a tool for student learning. The availability of this information will provide help considering design, development, and improvement of traditional assessment methods for student learning.
Tipo: Conference Paper or Presentation Palavras-chave: Student learning; Assessment; Exam; Teaching/Communication/Extension/Profession.
Ano: 2008 URL: http://purl.umn.edu/6471
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Implementation of subontology of Planning and control for business analysis domain AgEcon
Atanasova, Irena.
Ontologies are at the heart of the semantic web. They define the concepts and relationships that make global interoperability possible. However, as these ontologies grow in size they become more and more difficult to create, use, understand, maintain, transform and classify. As ontologies become common in more applications and as those applications become larger and longer-lived, it is becoming increasingly common for ontologies to be developed in different area of public sector of economics. Ontologies present special challenges to the problem of conceptual modeling. This paper describes the process of the implementation of a subontology of forecasting and evaluations for business analysis domain in order to develop an easy and correct way to find the...
Tipo: Journal Article Palavras-chave: Ontology; Forecasting; Assessment; Protege; Implementation; Research and Development/Tech Change/Emerging Technologies; GA; IN.
Ano: 2011 URL: http://purl.umn.edu/102493
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Just a Paycheck? Assessing Student Benefits of Work on Faculty Research Projects AgEcon
Mathews, Leah Greden.
The benefits that students gain from designing and implementing their own independent undergraduate research projects is often presented as a valuable step in their academic career, and a stepping stone to graduate school success. However, it is not clear what benefits students receive when working as undergraduate research assistants on faculty research projects where they, the students, have little or no input into the project or its design. This paper reports on a survey of undergraduate students who participated as wage laborers on two separate faculty-directed research projects. The results of the study suggest that students gain valuable knowledge and skills that serve as constructive preparation for work, personal lives and graduate school careers;...
Tipo: Conference Paper or Presentation Palavras-chave: Student learning; Assessment; Undergraduate research; Teaching/Communication/Extension/Profession.
Ano: 2009 URL: http://purl.umn.edu/49446
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RESULTS OF THE NORTH DAKOTA LAND VALUATION MODEL FOR THE 2001 AGRICULTURAL REAL ESTATE ASSESSMENT AgEcon
Aakre, Dwight G.; Vreugdenhil, Harvey G..
This report summarizes the results of the North Dakota Land Valuation Model. This model is used annually to estimate average land values by county, based on the value of production produced on that land. The county land values developed from this procedure form the basis for the 2001 valuation of agricultural land for assessment of real estate taxes. The average all land value from this analysis is multiplied by the total acres of agricultural land on the county abstract to determine each county's total agricultural land value. The State Board of Equalization compares this value with the total value assessed to agricultural property in each county. Each county is required by state statute to assess a total value of agricultural property within 5 percent of...
Tipo: Working or Discussion Paper Palavras-chave: Assessment; Capitalization rate; Land; Taxes; Valuation; Land Economics/Use.
Ano: 2001 URL: http://purl.umn.edu/23675
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Applying Sustainable Value Methodology for Hungarian Agriculture AgEcon
Molnar, Andras.
The Sustainable Value method is a promising approach for accessing sustainability performance of a given activity using the concept of opportunity cost and the performance of a given benchmark. In this study the performance of the Hungarian agriculture is studied. Using FADN data for the period of 2002-2006, the possible effect of the EU accession on agricultural production is examined. Structural, economic and human factors are considered in order to gain better understanding of the differences.
Tipo: Conference Paper or Presentation Palavras-chave: Sustainability; EU accession; Assessment; Environmental Economics and Policy; Farm Management.
Ano: 2008 URL: http://purl.umn.edu/44139
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Enriching Impact Assessment at CIMMYT AgEcon
La Rovere, Roberto; Dixon, John; Hellin, Jonathan.
The International Center for Maize and Wheat Improvement (CIMMYT) is a CGIAR centre with a long tradition of impact assessment (IA). Until recently, such work had focused on the rates of adoption of improved germplasm and returns on investment. Limited attention was directed at measuring impacts in terms of livelihood security or poverty reduction. In 2005, therefore, CIMMYT's Impacts Targeting and Assessment Unit (ITAU) began to develop and promote more wide-ranging types of IA. In order to enhance its IA culture and institutionalize IA within the Center, ITAU organized a series of workshops that brought together different players amongst CIMMYT's staff and partners. Coupled with follow-up activities, these have made it possible for social and biophysical...
Tipo: Report Palavras-chave: Impact; Assessment; CIMMYT; ILAC; CGIAR; Agricultural and Food Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/52528
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Adaptive, participatory and integrated assessment (APIA) of the impacts of irrigation on fisheries: Evaluation of the approach in Sri Lanka. AgEcon
Nguyen-Khoa, Sophie; Smith, Laurence; Lorenzen, Kai.
Tipo: Working or Discussion Paper Palavras-chave: Fisheries; Irrigation effects; Assessment; Decision making; Case studies; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/92016
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Impacts of irrigation on inland fisheries: Appraisals in Laos and Sri Lanka AgEcon
Nguyen-Khoa, Sophie; Smith, Laurence; Lorenzen, Kai.
Tipo: Report Palavras-chave: Fisheries; Irrigation effects; Assessment; Social aspects; Villages; Irrigation programs; Lagoons; Drainage; Households; Rice; Case studies; Community/Rural/Urban Development; Crop Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/92824
Registros recuperados: 52
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