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| Registros recuperados: 1.065 | |
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| Elobeid, Amani E.; Tokgoz, Simla; Yu, Tun-Hsiang (Edward). |
| The emerging biofuel sector has drawn great interest as an alternative source of fuel for transportation. The expansion of biofuels greatly impacts world agricultural markets, since currently, the primary feedstocks for ethanol and biodiesel production are field crops and their derived products. There is great interest in the potential of countries to expand their biofuel sectors through increased production of feedstocks. The long-term potential for developing first-generation biofuels in many countries depends on a large and constant supply of feedstocks. This may be achieved in two ways: land extensification and/or land intensification. However, expansion of land area comes with a number of environmental challenges highlighted by the recent debate on... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Biofuels; Yield growth; APEC; Land Economics/Use; Productivity Analysis. |
| Ano: 2009 |
URL: http://purl.umn.edu/61178 |
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| Pitchford, R.. |
| This paper distinguishes between the hypothesis that the Victorian government developed a reputation for easy renewal of timber rights, so that the lack of clearly defined site sizes and the short-term nature of these rights did not matter, and the hypothesis that tenure and site size as written in law was the major determinant. A model of a firm's investment choice when there is uncertain tenure is developed to examine the effect of changes in the tenure prospect on capital intensity. The predictions of this model are then used to assess the competing hypotheses with reference to data on capital labour ratios and legislation regarding tenure and site size laws in Victoria and Tasmania from 1890 to 1927. |
| Tipo: Journal Article |
Palavras-chave: Productivity Analysis; Risk and Uncertainty. |
| Ano: 1994 |
URL: http://purl.umn.edu/22733 |
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| Fan, Shenggen. |
| Output in Chinese agriculture has grown rapidly for the last several decades, as reported by the Statistical System in China. However, reported total output is aggregated using constant prices, which has been proven to be inappropriate by many economists. As a result, growth rates of output reported by the government may be biased. This bias can be large, particularly at a time when relative prices of agricultural products were changed substantially as part of the policy reforms during the 1980s and 1990s. A similar problem exists in the aggregation of total input. Consequently, estimates of total factor productivity, an index of output minus input, can also be biased. This study uses a more appropriate approach to measure growth in output, input and total... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Productivity Analysis. |
| Ano: 1997 |
URL: http://purl.umn.edu/16118 |
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| Ferjani, Ali. |
| This paper focuses on the evolution of productivity in the agricultural sector of 21 developped countries over the period of 1990-2002. It uses Data Envelopment Analysis, a non-parametric approach that allows decompositions of changes in productivity into variations in efficiency and technical change. The results show that productivity improvements (0,6 % per year) were principally due to technological progress (0,4 % per years). However, this performance was not uniform in all the countries. |
| Tipo: Journal Article |
Palavras-chave: Productivity Analysis. |
| Ano: 2005 |
URL: http://purl.umn.edu/32009 |
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| Koffi-Tessio, Egnonto M.. |
| In Sub-Saharan Africa, the bulk of agricultural output is produced by small holder farmers who continue to depend on rainfall. As such, agricultural economists often use average rainfall as a summative environmental indicator in estimating agricultural production function. This methodology is flawed. A close scrutiny of agricultural practices /agronomic sciences reveals that agricultural output is more determined by rainfall distribution than average rainfall. This relationship is explored in the Togolese context. The conclusion reached is that, between 1965 and 1992, intra-annual rainfall distribution measured by its standard of deviation has not been relevant in explaining the variation of food production in Togo due to the continuous degradation of the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy; Productivity Analysis. |
| Ano: 2004 |
URL: http://purl.umn.edu/9534 |
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| Key, Nigel D.; McBride, William D.. |
| Estimating how the use of production contracts affects farm productivity is difficult when unobservable factors are correlated with both the decision to contract and productivity. To account for potential selection bias, this study uses the local availability of production contracts as an instrument for whether a farm uses a contract in order to estimate the impact of contract use on total factor productivity. Results indicate that use of a production contract is associated with a large increase in productivity for feeder-to-finish hog farms in the United States. The instrumental variable method makes it credible to assert that the observed association is a causal relationship rather than simply a correlation. |
| Tipo: Journal Article |
Palavras-chave: Productivity; Production contracts; Instrumental variables; Sample selection; Productivity Analysis. |
| Ano: 2008 |
URL: http://purl.umn.edu/45659 |
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| Balcombe, Kelvin George; Davidova, Sophia; Latruffe, Laure. |
| The paper assesses the extent to which sampling variation affects findings about Malmquist productivity change derived using Data Envelopment Analysis (DEA), in the first stage calculating productivity indices and in the second stage investigating the farm-specific change in productivity. Confidence intervals for Malmquist indices are constructed using Simar and Wilson's (1999) bootstrapping procedure. The main contribution of the paper is to account in the second stage for the information provided by the bootstrap in the first stage. The DEA standard errors of the Malmquist indices given by bootstrapping are employed in an innovative heteroscedastic panel regression, using a maximum likelihood procedure. The application is to a sample of 250 Polish farms... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Productivity; Malmquist; Bootstrapping; Second-stage regression; Poland; Productivity Analysis. |
| Ano: 2006 |
URL: http://purl.umn.edu/25793 |
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| Registros recuperados: 1.065 | |
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