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| Registros recuperados: 105 | |
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| Sharma, Manohar P.; Zeller, Manfred. |
| This paper analyzes the repayment rates of credit groups belonging to three group-based credit programs in Bangladesh: the Association for Social Advancement (ASA), the Bangladesh Rural Advancement Committee (BRAC), and the Rangpur Dinajpur Rural Service (RDRS). Hypotheses are drawn from economic theory relating group responsibility, and the resulting monitoring by peers, to a more effective enforcement of contractual obligations as well as to improved ability of the group as a whole to repay loans. Specific tests are performed on the following hypothesized determinants: group size, size of loans, degree of loan rationing, enterprise mix within groups, demographic characteristics, social ties and status, and occurrence of idiosyncratic shocks. Analysis is... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Credit; Research; Methodology; Bangladesh; Financial Economics. |
| Ano: 1996 |
URL: http://purl.umn.edu/97302 |
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| Bakucs, Lajos Zoltan. |
| There is a continuously growing literature on the agricultural transformation in Central and Eastern European countries (see some surveys in Brooks and Nash 2002; Rozelle and Swinnen 2004). The research has focused on various aspects of transition, including land reform, farm restructuring, price and trade liberalisation, but even though Farm Accountancy Data Network (FADN) data are now available for some years, there are only a few studies (e.g. Bakucs et al. 2010, Fogarasi and Latruffe, 2007, Baráth et al., 2009) focusing on Hungarian farm performance. The objective of this paper is to shed light on some methodological issues that are needed to study Hungarian farm performance. Here we consider one aspect of farm performance, namely technical efficiency.... |
| Tipo: Journal Article |
Palavras-chave: Farm technical efficiency; Stochastic Frontier Analysis; Methodology; Productivity Analysis; Research Methods/ Statistical Methods. |
| Ano: 2011 |
URL: http://purl.umn.edu/102404 |
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| Davis, George C.. |
| In the past two decades, the profession has expended valuable resources testing structural change in meat demand with mixed results. Overlooked to date is a fundamental methodological problem that transcends all of the methods of testing for structural change. In this study, a formal logic framework is utilized in which methodological problems associated with any hypothesis test can be analyzed. Within this framework, it is proven that there is no valid test of any single hypothesis, including structural change. Because of this result, additional criteria from the methodology literature are then used to evaluate the literature on structural change in meat demand. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Logic; Meat demand; Methodology; Structural change; Demand and Price Analysis. |
| Ano: 1997 |
URL: http://purl.umn.edu/23975 |
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| Bouis, Howarth E.; Scott, Gregory. |
| Secondary crops are of increasing interest to policymakers and planners in developing countries because of a desire to diversify economic activities and because of their proven potential to raise farm incomes and rural employment. To assess this potential, basic information on the demand characteristics for these crops is required. But, given the large number of possible crops to be studied, policy analysts require an estimation procedure that is less data-intensive and time-intensive than standard econometric estimation procedures. In this paper, a relatively new, low-cost procedure, based on demand for food characteristics, is applied, illustrating its usefulness for analysis of demand for potatoes in Bangladesh and Pakistan. In Asia, the potato should... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Economics; Methodology; Pakistan; Potatoes; Economic aspects; Crop diversification; Price Maintenance; Asia; Bangladesh; Crop Production/Industries. |
| Ano: 1996 |
URL: http://purl.umn.edu/97300 |
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| Jacobs, Peter T.. |
| This article investigates the conceptual and methodological challenges to develop a set of baseline indicators for South African food security targets. A food security target is a well-defined and measurable goal to reduce the numbers of people who lack enough food of the right quality to live healthy lives. To derive baseline indicators for household food security, the following question is asked: what is the average cost of a nutritionally adequate food basket per person? The cost of recommended nutrient intake is based on estimates of dietary energy costs. Reported food expenditure for each household based on 2005/2006 Income and Expenditure Survey data gets compared to two dietary energy cost baskets. The food expenditure shares of the poorest... |
| Tipo: Journal Article |
Palavras-chave: Food security; Dietary energy cost; Household expenditure; Methodology; South Africa; Consumer/Household Economics. |
| Ano: 2009 |
URL: http://purl.umn.edu/58214 |
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| Theesfeld, Insa; Schleyer, Christian; Callois, Jean-Marc; Aznar, Olivier. |
| Ex-ante impact assessment of agricultural, environmental, and rural policies has become an integral part of political decision making processes in the EU. While there is a large variety of agrienvironmental modelling tools available to analyse likely social, economic, and environmental impacts of these policies, scientifically well-founded ex-ante policy assessment tools capturing the institutional dimension are still missing. In this paper, we introduce a formalised procedure for modelling – ex-ante – institutional aspects for policy implementation: the ‘Procedure for Institutional Compatibility Assessment’ (PICA). PICA has been designed as an explorative, yet formalised methodology that enables policy makers to identify at an early stage potential... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Methodology; Ex-ante Policy Assessment; Institutional Policy Assessment; Agricultural and Food Policy; Environmental Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/43646 |
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| Davis, George C.. |
| The language of economics is the language of models. Understanding the structure of this language offers many benefits. Unfortunately, the structure is ubiquitous in implementation but absent in documentation. This paper documents the structure of models in the context of the theory reduction and testing process. The structure is used to explain why there are several legitimate ways to deal with nonspherical errors in econometric models and why the recent work on stochastic preferences and technologies is a progressive step forward for the discipline. A production modeling exercise is presented to help illuminate the concepts. |
| Tipo: Journal Article |
Palavras-chave: Methodology; Models; Theory reduction; Theory testing; Venn diagrams; Research Methods/ Statistical Methods. |
| Ano: 2004 |
URL: http://purl.umn.edu/31142 |
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| Széchy,Maria Teresa M. de; Galliez,Maron; Marconi,Márcia I.. |
| The suitability of quantitative variables for phenological studies was evaluated in a population of the brown seaweed Sargassum vulgare from "Praia das Gordas", Angra dos Reis, Ilha Grande Bay, state of Rio de Janeiro. From June 1998 to May 1999, twenty adult individuals were randomly sampled at bimonthly intervals. Fifteen variables related to the vegetative and reproductive development of perennial and non-perennial parts of the individuals were quantified. Variables related to the non-perennial parts were more useful than those related to the perennial parts, because they showed a clear variation over the year. Vegetative development declined from June to October, and increased from October to February, when maximum median values of thallus height,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Methodology; Reproduction; Sargassum; Temporal variation; Vegetative development. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000100004 |
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| Jeromini,Tatiane Sanches; Muniz,Roberta Almeida; Silva,Givanildo Zildo da; Martins,Cibele Chalita. |
| ABSTRACT The Rules for Seed Analysis reports the use of a paper envelope in germination tests, but without any description of the exact method. The objective of this study was to evaluate the viability of the envelope method and the optimal level of substrate wetting when performing germination tests of onion seeds. The study was performed in two stages. In the first stage, a batch of seeds was evaluated using two seeding methods (on paper and in a paper envelope) and five levels of substrate wetting with differing amounts of water: 1.5, 2.0, 2.5, 3.0, and 3.5 times the dry mass of the paper. A completely randomized design was used in a 2×5 factorial scheme. In the second stage of the study, the two seeding methods mentioned in the prior were tested in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa L.; Analysis of seeds; Quality control; Water levels; Methodology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100169 |
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| Paula Júnior,Trazilbo J.; Vieira,Rogério F.; Jesus Junior,Waldir C.; Hau,Bernhard; Teixeira,Hudson. |
| A study was conducted to evaluate the effects on the development of root rot on common bean, cv. 'Dufrix' after treatment with four volumes of water (0, 30%, 60%, and 90%, v/w) added to rice grains previously immersed in water for 24 hours before autoclaving and colonization of grains by Rhizoctoniasolani AG-4. Colonized rice grains and non-infested rice grains were mixed in pots with sterilized soil and sand (2:1), where beans were sown. Based on results of area under plant emergence curve, plant height, plant dry weight, and disease severity, we conclude that inoculum is more effective in causing disease when no water is added to the rice grains before autoclaving. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Phaseolus vulgaris; Soilborne pathogen; Methodology; Root rot. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582007000600008 |
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| Gaspar-Oliveira, Carolina Maria; UNESP; Martins, Cibele Chalita; Faculdade de Ciências Agronômicas / UNESP - Botucatu-SP; Nakagawa, João; Faculdade de Ciências Agronômicas - UNESP Botucatu-SP. |
| O objetivo do trabalho foi padronizar a metodologia de pré-condicionamento das sementes de mamoneira (Ricinus communis L.) para a avaliação do potencial fisiológico pelo teste de tetrazólio. Testaram-se os seguintes métodos de pré-condicionamento: sementes com tegumento entre papel umedecido a 30, 35 e 40°C por 6, 8, 10, 12, 14, 16 e 18h; sementes sem tegumento entre papel umedecido e sementes com tegumento imersas em água a 25, 30, 35 e 40° C por 1, 2, 3, 4, 5 e 6h. Após o pré-condicionamento, removeu-se o tegumento das sementes, que foram cortadas no sentido do comprimento e imersas na solução de tetrazólio a 0,2%, por 120 min., a 35°C. Avaliaram-se a porcentagem de germinação das sementes, o teor de água, antes e após a... |
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Palavras-chave: 5.01.00.00-9; 5.01.03.00-8; 5.01.03.03-2 Viabilidade; Mamona; Metodologia; Potencial fisiológico Agronomia; Fitotecnia; Produção e Beneficiamento de Sementes Viability; Castor bean; Methodology; Physiological potential. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6025 |
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| Pereira-Junior,Pedro P.; Marocolo,Moacir; Rodrigues,Fabricio P.; Medei,Emiliano; Nascimento,José H.M.. |
| Heart rate variability (HRV) analysis consists in a well-established tool for the assessment of cardiac autonomic control, both in humans and in animal models. Conventional methods for HRV analysis in rats rely on conscious state electrocardiogram (ECG) recording based on prior invasive surgical procedures for electrodes/transmitters implants. The aim of the present study was to test a noninvasive and inexpensive method for ECG recording in conscious rats, assessing its feasibility for HRV analysis. A custom-made elastic cotton jacket was developed to fit the rat's mean thoracic circumference, with two pieces of platinum electrodes attached on its inner surface, allowing ECG to be recorded noninvasively in conscious, restrained rats (n=6). Time- and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrocardiography; Heart rate variability; Methodology; Noninvasive; Rat. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200019 |
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| Junior,Daniel Dias Valadão; Biachini,Aloísio; Valadão,Franciele Caroline Assis; Rosa,Rodrigo Pengo. |
| This study aimed to evaluate the effect of penetration rate and the size of the cone base on the resistance to penetration under different soil moistures and soil bulk density. The experimental design was completely randomized in a 4x2x2x2 factorial arrangement, with the factors, soil bulk density of 1.0; 1.2; 1.4 and 1.6 Mg m-3, soil moisture at the evaluation of 0.16 and 0.22 kg kg-1, penetration rates of 0.166 and 30 mm s-1 and areas of the cone base of 10.98 and 129.28 mm² resulting in 32 treatments with 8 replicates. To ensure greater uniformity and similarity to field conditions, samples passed through cycles of wetting and drying. Only the interaction of the four factors was not significant. Resistance values varied with the density of the soil,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil bulk density; Soil moisture; Methodology. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200012 |
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| Wang,Yong; Huang,Wenhua; Peng,Daizhi; Hu,Yuanbin. |
| In this work, several major procedures of the electrophoretic mobility shift assay (EMSA) were modified including swift extraction of the nucleic protein, labeling of the probe and radioautography. The modified assay required shorter time, simplified the nucleic protein extraction, increased the radioactivity of the labeling probe, skipped the tedious process of gel drying, and produced clear images. Its results were comparable, reproducible and stable. It thus has merited for wide application. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nuclear transcription factor; Electrophoretic mobility shift assay; Methodology; Modification. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000400025 |
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| Registros recuperados: 105 | |
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