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Registros recuperados: 8
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AN APPLIATION OF THE STOCHASTIC LATENT VARIABLE APPROACH TO THE CORRECTION OF SECTOR LEVEL TFP CALCULATIONS IN THE FACE OF BIASED TECHNOLOGICAL CHANGE AgEcon
Bailey, Alastair; Irz, Xavier T.; Balcombe, Kelvin George.
The measurement of the impact of technical change has received significant attention within the economics literature. One popular method of quantifying this impact of technical change is the use of growth accounting index numbers. However, in a recent article Nelson and Pack (1999) criticise the use of such index numbers in situations where technical change is likely to be biased in favour of one or other inputs. In particular they criticise the common approach of applying observed factor shares as proxies for partial output elasticities to weight the change in quantities which they claim are only valid under Hicks neutrality. Recent advances in the measurement of product and factor biases of technical change developed by Balcombe et al (2000) provide a...
Tipo: Conference Paper or Presentation Palavras-chave: Biased Technological Change; Latent Variables; TFP.; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003 URL: http://purl.umn.edu/25842
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An Assessment of the Potential Consumption Impacts of WHO Dietary Norms in OECD Countries AgEcon
Srinivasan, Chittur S.; Shankar, Bhavani; Irz, Xavier T..
The member countries of the World Health Organization (WHO) have recently endorsed its Global Strategy on Diet, Physical Activity and Health. The strategy emphasizes the need to limit the consumption of saturated fats and trans fatty acids, salt and sugars, and to increase consumption of fruits and vegetables in order to combat the growing burden of non communicable diseases. Adherence to the norms recommended by the WHO would call for major changes in the consumption, production and trade of several key food products and several sectors of the food industry have expectedly raised serious concerns about the potential impact of these norms on their future growth prospects. This paper attempts a broad quantitative assessment of the consumption impacts of...
Tipo: Conference Paper or Presentation Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2005 URL: http://purl.umn.edu/24564
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Can the world feed itself? Some insights from growth theory AgEcon
Irz, Xavier T.; Roe, Terry L..
This paper develops a two-sector growth model incorporating the essential distinguishing features of agriculture, including the reliance of production on a natural resource base as well as on industrially produced inputs, the low income elasticity of demand for food and the life-sustaining function of food consumption. In this framework, the ability of an economy to supply an adequate supply of food to a growing population can be related to the existence of a steady state. This property is used to define a simple analytical criterion upon which to assess the long-term food situation of a closed economy. This sustainability condition relates all the dynamic parameters of the economy: rates of technological change in the two sectors, rate of population...
Tipo: Journal Article Palavras-chave: Food Security and Poverty.
Ano: 2000 URL: http://purl.umn.edu/54213
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Dual Technological Development in Botswana Agriculture - A Stochastic Input Distance Approach AgEcon
Irz, Xavier T.; Hadley, David.
To improve the welfare of the rural poor and keep them in the countryside, the government has been spending 40% of the value of agricultural GDP on agricultural support services. But can investment make smallholder agriculture prosperous in such adverse conditions? This paper derives an answer by applying a two-output six-input stochastic translog distance function, with inefficiency effects and biased technical change to panel data for the 18 districts and the commercial sector, from 1979 to 1996. This model demonstrates that herds are the most important input, followed by draft power, land and seeds. Multilateral indices for technical change, technical efficiency and total factor productivity (TFP) show that the technology level of the commercial sector...
Tipo: Conference Paper or Presentation Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2003 URL: http://purl.umn.edu/25899
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GROWTH PATTERN, SUSTAINABILITY AND TRADE IN A LAND CONSTRAINED ECONOMY AgEcon
Irz, Xavier T.; Roe, Terry L..
This paper develops a two-sector model of growth where agriculture is considered explicitly. Key features of the model include: the reliance of agricultural production on a fixed but degrading resource base, the use by the farm sector of industrially produced inputs and differing rates of technological progress in the two sectors. On the demand side, the low income elasticity for food as well as the life-sustaining function of food consumption are recognized. In this simplified framework, the sustainability of growth can be related to the existence of a steady state reflecting the ability of the economy to feed its population. This property is used to identify the characteristics within and outside of agriculture conducive to the sustainability of a...
Tipo: Conference Paper or Presentation Palavras-chave: Sustainability; Agriculture and growth; Dynamic general equilibrium model; International Development; O41; O13; F11.
Ano: 2000 URL: http://purl.umn.edu/21762
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Modelling physical quantities of food and nutrients consumed from aggregate data – with an application to Finland AgEcon
Irz, Xavier T..
Anticipating the impact of changes in economic incentives on dietary quality and nutritional health requires knowledge of how physical quantities of food consumed respond to price and income variations. A problem arises, however, because physical quantities are: 1- not consistent aggregates in demand models; and 2- not measured at final/retail level in national statistics. The paper develops a solution by establishing explicitly the theoretical link between composite demand and physical quantities, from which a novel empirical approach to the estimation of nutrient elasticities is derived. It is applied to Finnish aggregate data from the National Accounts and Food Balance Sheets over the 1975-2006 period, and the results are used to assess the potential...
Tipo: Conference Paper or Presentation Palavras-chave: Demand analysis; Aggregation theory; Physical consumption; Nutrition; Nutrient elasticity; Finland; Fat tax; Nutritional policy.; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; I10; Q18; Q11.
Ano: 2009 URL: http://purl.umn.edu/50324
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Sustainability as Comprise: An Analysis of the Farm-Level Trade-Offs Between Development Objectives in Philippine Aquaculture AgEcon
Stevenson, James R.; Irz, Xavier T..
Farm-level trade-offs between development objectives are analysed using a three-stage methodological design. Firstly, a typology of arming systems is devised, using data from a farm-level survey and the methods of principal components analysis and cluster analysis. Five farm types are described that characterize current production practices in two regions in the Philippines. Secondly, a set of sustainability indicators are measured for each of the five farm types. Finally, the sustainability indicator results are analysed in a participatory multi-criteria decision-making model using weights established during a series of focus groups with stakeholders in the study regions. Very large farms perform particularly badly in these analyses, and the optimal...
Tipo: Conference Paper or Presentation Palavras-chave: International Development; Livestock Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/56007
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DETERMINANTS OF FOOD PRICE INFLATION IN FINLAND AgEcon
Irz, Xavier T.; Niemi, Jyrki S.; Xing, Liu.
The agricultural commodity crisis of 2006-8 and the recent evolution of commodity markets have reignited anxieties in Finland over fast-rising food prices and food security. Although the impact of farm commodity price shocks on the final consumer is mitigated by a large degree of processing as well as the complex structure of the food chain, little is known about the strength of the linkages between food markets and input markets. Using monthly series of price indices from 1995 to 2010, we estimate a vector error-correction (VEC) model in a co-integration framework in order to investigate the short-term and long-term dynamics of food price formation. The results indicate that a statistically significant long-run equilibrium relationship exists between the...
Tipo: Conference Paper or Presentation Palavras-chave: Demand and Price Analysis.
Ano: 2011 URL: http://purl.umn.edu/114460
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