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| Registros recuperados: 39 | |
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| Chebbi, Houssem Eddine; Boujelbene, Y.. |
| The aim of this country specific study is to understand long and short-run linkages between economic growth, energy consumption and CO2 emission using Tunisian data over the period 1971-2004. Statistical findings indicate that economic growth, energy consumption and CO2 emission are related in the long-run and provide some evidence of inefficient use of energy in Tunisia, since environmental pressure tends to rise faster than economic growth. In the short run, results support the argument that economic growth exerts a positive “causal” influence on energy consumption growth. In addition, results from impulse response do not confirm the hypothesis that an increase in pollution level induces economic expansion. Although Tunisia has no commitment to reduce... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: CO2 emissions; Energy Consumption; Economic Growth; Tunisia; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/44016 |
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| Chebbi, Houssem Eddine; Lachaal, Lassaad. |
| For the past two decades, Tunisia has been undertaken important structural reforms, which call in most cases for market and trade liberalization (agricultural structural adjustment program, GATT reforms, free trade area with the European Union). The private-led type of growth strategy with less government intervention has culminated these last years into a more rapid economic growth and openness. Within this context, this paper examines the agricultural sector role into the economic growth and its interactions with the other sectors using time-series co-integration techniques. We use annual data from 1961 to 2005 to estimate a VAR model that includes GDP indices of five sectors in Tunisian economy. Empirical results from this study indicate that in the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Co-integration; Economic growth; Agricultural sector; Tunisia; International Development; C22; O13; Q18. |
| Ano: 2007 |
URL: http://purl.umn.edu/9416 |
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| Chemingui, Mohamed Abdelbasset; Thabet, Chokri. |
| The study tries to answer the following questions: Will exposure to world agricultural prices generate more poverty or less? To what extent will households be affected by changes in agricultural trade polices? Do multilateral agricultural liberalization matter more than bilateral changes? Results of simulations using a computable general equilibrium (CGE) model linked to household survey data suggest that trade liberalization has only modest effects on the level of GDP, but it has a substantial effect in reducing poverty. Moreover, the combined effects of global and domestic liberalization are more pro-poor than the effect of domestic liberalization alone. As a net importer of agricultural commodities, Tunisia may be expected to experience terms-oftrade... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Tunisia; Agricultural trade liberalization; Poverty; International Relations/Trade. |
| Ano: 2008 |
URL: http://purl.umn.edu/44466 |
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| Chebil, Ali; Nasr, Hafedh; Zaibet, Lokman. |
| This paper analyzed the factors that affect farmers’ willingness to adopt salt-tolerant forage for livestock, using a Tobit model. The data used for the empirical analysis was obtained from a survey of 97 farmers in southeastern Tunisia. The results of this study show that variables related to age, education level, the salinity level of water and membership in a farmers’ association do not significantly influence the degree to which salt-tolerant forage production is adopted. It did, however, find a positive relationship between off-farm income availability and adoption. In addition, the flock size variable, expressed in Standard Livestock Units, has a significant and positive relationship with adoption. This indicates farmers’ need to cover their forage... |
| Tipo: Journal Article |
Palavras-chave: Farmers’ willingness to adopt; Salt-tolerant forage; Tobit model; Tunisia; Crop Production/Industries. |
| Ano: 2009 |
URL: http://purl.umn.edu/56952 |
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| Dhehibi, Boubaker; Lachaal, Lassaad; Elloumi, Mohamed; Messaoud, Emna B.. |
| This paper proposes an alternative measure of irrigation water efficiency based on the concept of input-specific technical efficiency. It uses a stochastic production frontier approach, based on Battese and Coelli’s (1995) inefficiency effect model, to obtain farm-specific estimates of technical and irrigation water efficiency, and a second-stage regression approach to identify the factors that influence irrigation water efficiency differentials. This methodology was applied to a sample of 144 citrus farms in Nabeul, Tunisia. Technical efficiency varies widely, suggesting that these citrus farmers could increase their production by as much 33% by using inputs more efficiently. Mean irrigation water efficiency is similarly variable, and on average below... |
| Tipo: Journal Article |
Palavras-chave: Water efficiency; Stochastic frontier production function; Citrus farms; Tunisia; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/57013 |
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| Dhehibi, Boubaker; Lachaal, Lassaad; Karray, B.; Chebil, Ali. |
| The aim of this paper is to investigate the relative contribution of technical efficiency, technological change and increased input use to the output growth of the Tunisian olive oil growing farms using a stochastic frontier production function approach applied to panel data for the period 1995- 1997. The proposed methodology is based on the use of a flexible translog functional form. Results indicate that technical efficiency of production in the sample of olive producing farms investigated ranges from a minimum of 24.8% to a maximum of 84.6% with an average technical efficiency estimate of 48.5%. This suggests that olive producers may increase their production by as much as 51.5% through more efficient use of production inputs. Further, the production is... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Olive oil sector; Tunisia; Productivity; Crop Production/Industries; Demand and Price Analysis. |
| Ano: 2006 |
URL: http://purl.umn.edu/10037 |
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| Jouili, Mustapha. |
| In Tunisia, small and medium-sized family farms dominate agriculture. From the early 80s, with the introduction of the Structural Adjustment Program (SAP), the conditions of production and reproduction of small farms have radically changed. In addition to the unfavorable trend of the prices, these farms are increasingly excluded from credit, land and support services. The ultimate consequence is a tendency in real incomes to decline, particularly sharp for small farms in the arid regions of the country. Faced with this degradation, small farms have developed mechanisms of adaptation or regulation allowing them to survive and, even in certain cases, to ensure more than a simple reproduction. But, it seems that the limits of these mechanisms of resistance... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agriculture; Agricultural policy; Small farms; Tunisia; Agricultural and Food Policy; Consumer/Household Economics; Q10; Q12; Q18. |
| Ano: 2009 |
URL: http://purl.umn.edu/52816 |
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| Dhehibi, Boubaker. |
| The objective of this paper is to measure productive efficiency of irrigation water efficiency based on the concept of technical efficiency and compared among different sizes farms in Tunisia. The proposed methodology is applied to a randomly selected sample of 144 citrus growing farms and differentiated by size (small, medium and large farms). A stochastic production frontier approach, based on Battese and Coelli’s (1995) inefficiency effect model, is used to obtain farm-specific estimates of technical and irrigation water efficiency. The last step of the analysis consists on the identification of the factors influencing irrigation water efficiency differentials across citrus growing farms. Empirical results show that estimated mean technical efficiency... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Water Efficiency; Stochastic frontier production function; Small; Medium and large citrus farms; Tunisia; Crop Production/Industries. |
| Ano: 2011 |
URL: http://purl.umn.edu/114441 |
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| Dhehibi, Boubaker; Lachaal, Lassaad. |
| This paper analyse the patterns of productivity and economic growth in the Tunisian agriculture during the 19612000. Results indicated that agriculture output growth where high in both the 19611970 and the 19711980 periods but decreased during the 19912000 period. Average output growth exceeded 6% during the 19811990 period, the average output growth during 19912000 had fallen to 4%. Over the whole period, capital was the most important contributor to output growth and labour is considered as the least significant contributor to economic growth. Total factor productivity contribution to output growth decreased from 4.64% in 19611970 to 2.86% in 19711980. In contrast, this contribution increased in 1981-1990 to close the 4.38%. In the last period,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Production function; Translog; Agriculture; TFP; Tunisia; International Development; Productivity Analysis; C8; O13; O14. |
| Ano: 2006 |
URL: http://purl.umn.edu/25707 |
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| Dhehibi, Boubaker; Laajimi, Abderraouf. |
| Number of Tunisian food demand studies have measured the influence of traditional variables, such as income and prices, and in some cases some socio-demographic variables. However, given increasing concerns about health, other important factors, such as the nutritious quality and the nutrient content of food, have also been shown to determine consumer choices. This paper analyses the effect of these factors on the demand for dairy products. The nutritious quality of dairy products is measured by an index that relates nutrient content of each product with the standards suggested by the National Academy of Science. A demand system is estimated and nutrient demand elasticities with respect to prices and expenditure are obtained. Results differ from... |
| Tipo: Journal Article |
Palavras-chave: Dairy products demand; Health awareness; Nutrients; Price/quality index; Tunisia; Agricultural and Food Policy; D12; I12. |
| Ano: 2009 |
URL: http://purl.umn.edu/57279 |
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| Dhehibi, Boubaker. |
| The objective of this paper is to measure productive efficiency of irrigation water efficiency based on the concept of technical efficiency and compared among different sizes farms. The proposed methodology is applied to a randomly selected sample of 144 citrus growing farms located in Nabeul (Tunisia) and differentiated by size (small, medium and large farms). A stochastic production frontier approach, based on Battese and Coelli’s (1995) inefficiency effect model, is used to obtain farm-specific estimates of technical and irrigation water efficiency. The last step of the analysis consists on the identification of the factors influencing irrigation water efficiency differentials across citrus growing farms on the basis on a second-stage regression... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Water Efficiency; Stochastic frontier production function; Small; Medium and large citrus farms; Tunisia; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/97328 |
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| Laajimi, Abderraouf; Ben Nasr, J.; Guesmi, Anis. |
| This research has been carried out to study the sustainability of the Tunisian olive-growing farms and to compare the sustainability level of organic with conventional farms. A survey was conducted with 62 olive growers in the region of Sfax in Tunisia. First, a diagnosis of the situation of the farms was undertaken comparing between organic and conventional farms. Second, an empirical analysis was achieved to asses the sustainability of organic farms versus conventional farms following the French “IDEA” method developed by Vilain [1] 1. The “IDEA” indicators showed a greater ranking for the organic farms. The analysis indicated the sustainability of organic farming on the three scales adopted; ecological scale, through the soil fertility and reduction of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Sustainability; Organic farming; Tunisia; Environmental Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/44463 |
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| Ben Kaabia, Monia; Gil, Jose Maria; Chebbi, Houssem Eddine. |
| This paper aims to analyse the impact of changes in the monetary policy and the exchange rate on agricultural supply, prices and exports. The methodology used is based on the multivariate cointegration approach. Ten variables are considered: interest and exchange rates, money supply, inflation, agricultural output and input prices, agricultural supply and exports, income and the rate of commercial openness. Sample period covers annual data from 1967 to 2002. Due to the short-sample period, two subsystems are considered. First, long-run relationships are identified in each subsystem. Second, both subsystems are merged in order to calculate the short-run dynamics. Results indicate that changes in macroeconomic variables have an effect on the agricultural... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Macroeconomic policy; Agro-food sector; Tunisia; Impulse-response functions; Political Economy; C32; N57; O31. |
| Ano: 2005 |
URL: http://purl.umn.edu/24597 |
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| Registros recuperados: 39 | |
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