The literature identifies two common approaches for estimating technical efficiency. One approach is based on non-parametric, non-stochastic, linear programming. This suffers from the criticism that it does not take into account the possible influence of measurement error and other noise in the data (Coelli, 1995). The second approach uses econometrics to estimate a stochastic frontier function, and to estimate the inefficiency component of the error term. The disadvantage of this approach is that it imposes an explicit and possibly restrictive functional form on the technology.
Résultats de la rechercheShowing items 1 through 9 of 9.
Library ResourceArticles et Livresjanvier, 2011Soudan, Afrique septentrionale
Library ResourceRapports et recherchesjuin, 2003Arménie, Azerbaïdjan, Érythrée, Éthiopie, Géorgie, Kazakhstan, Kirghizistan, Pakistan, Soudan, Tadjikistan, Turkménistan, Ouzbékistan, Afrique orientale, Afrique septentrionale, Asie méridionale, Asie central, Asie occidentale
The year 2002 marked ICARDA's 25th anniversary, and coincided with several honors and awards for the center's excellence in research. Research on developing high-yielding kabuli chickpea varieties that thrive in cool, wet winter conditions earned the 2002 King Baudouin Award of the Consultative Group on International Agricultural Research (CGIAR), jointly with the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), which focuses on desi chickpea.
Library ResourceDocuments et rapports de conférenceoctobre, 2017Afghanistan, Émirats arabes unis, Égypte, Éthiopie, Inde, Iran, Iraq, Jordanie, Liban, Maroc, Oman, Pakistan, Soudan, République arabe syrienne, Tunisie, Turquie, Ouzbékistan, Yémen, Afrique orientale, Afrique septentrionale, Asie méridionale, Asie central, Asie occidentale
To help break the cycle of poverty, improve food and nutritional security, halt or reverse the alarming process of resource degradation in the dry areas, and help communities adapt to the impacts of climate variability and change, ICARDA’s Strategic Plan 2017-2026 outlines our research and organizational approach for action to achieve our vision of thriving and resilient communities in the dry areas of the developing world.
Library ResourceDocuments et rapports de conférencedécembre, 2015Afrique septentrionale, Égypte, Maroc, Soudan, Tunisie, Afrique orientale, Burundi, Djibouti, Érythrée, Éthiopie, Kenya, Madagascar, Malawi, Mozambique, Rwanda, Soudan du Sud, République-Unie de Tanzanie, Zambie, Zimbabwe, Afrique centrale, Angola, Cameroun, République centrafricaine, Tchad, Congo, République démocratique du Congo, Gabon, Afrique australe, Botswana, Lesotho, Namibie, Afrique du Sud, Eswatini, Afrique occidentale, Bénin, Burkina Faso, Ghana, Guinée, Côte d'Ivoire, Libéria, Mali, Mauritanie, Niger, Nigéria, Sénégal, Sierra Leone, Togo
Land degradation and desertification are among the biggest environmental challenges of our time. In the last 40 years, we lost nearly a third of the world’s arable farmland due to erosion, just as the number of people to be fed from it almost doubled. That’s why the UN General Assembly declared 2015 as the International Year of Soils. And the good news is that this new report shows that while Africa remains the most severely a«ected region, the benefit of taking action across the continent outweighs the cost of implementing it: not just by a little, but by a factor of seven.
Library ResourceDocuments de politique et mémoiresmars, 2012Algérie, Égypte, Érythrée, Éthiopie, Kenya, Libye, Maroc, Mauritanie, Soudan, Soudan du Sud, Tunisie, Afrique occidentale, Afrique orientale, Afrique septentrionale
Few regions present bigger development challenges than the African drylands – home to nearly 300 million people, and the vast majority of Africa’s poor. Food security and rural welfare in these areas are limited by a range of factors, biophysical, socio-economic and policy-related. And many of the biggest challenges – poverty, drought, land degradation, food insecurity – will be exacerbated by climate change.
Library ResourceRapports et recherchesoctobre, 2017Afghanistan, Chine, Algérie, Égypte, Éthiopie, Inde, Iran, Iraq, Jordanie, Kazakhstan, Kirghizistan, Liban, Libye, Maroc, Pakistan, Palestine, Soudan, République arabe syrienne, Tadjikistan, Turkménistan, Tunisie, Turquie, Ouzbékistan, Afrique orientale, Afrique septentrionale, Asie orientale, Asie méridionale, Asie central, Asie occidentale
This document presents the Strategic Plan of the International Center for Agricultural Research in the Dry Areas for the period from 2017 to 2026. ICARDA’s mission is to enhance food, water, and nutritional security and environmental health in the face of global challenges, including climate change. Through preparedness for change and productivity gains in the rural economy, ICARDA will contribute to poverty reduction and social stability as our overarching goal. Innovative science, partnerships for impact, capacity development, and a fit-for-purpose organization are our tools.
Library ResourceMatériels institutionnels et promotionnelsoctobre, 2017Afghanistan, Émirats arabes unis, Égypte, Éthiopie, Inde, Iran, Iraq, Jordanie, Liban, Maroc, Oman, Pakistan, Soudan, République arabe syrienne, Tunisie, Turquie, Ouzbékistan, Yémen, Afrique orientale, Afrique septentrionale, Asie méridionale, Asie central, Asie occidentale
Non-tropical dry areas cover over 40% of the world’s land surface with a growing population of more than 2.5 billion people. These people grow 44% of the world’s food and keep half of the world’s livestock, yet one in six live in chronic poverty. Dry areas also face major challenges, including insufficient rainfall, climate variability and change, land degradation, desertification, recurring droughts, temperature extremes, high population growth, widespread poverty, and unemployment.
Library ResourceRapports et recherchesjuillet, 2018Afrique septentrionale, Égypte, Maroc, Soudan, Tunisie, Afrique orientale, Éthiopie, Asie méridionale, Afghanistan, Inde, Iran, Asie occidentale, Iraq, Jordanie, Liban, Palestine, République arabe syrienne
Widespread heat waves, floods, and droughts last year were a strong reminder of the threats posed by climate change. In the non-tropical dry areas where ICARDA works we are becoming accustomed to record high temperatures and increasing water scarcity year on year. Resilience and climate change adaptation are at the heart of ICARDA’s new Strategic Plan 2017-2026 – a bold and ambitious effort to harness cutting-edge science and deliver the tools and technologies that smallholder farmers need to maintain agricultural production and protect their livelihoods.
Library ResourceArticles et Livresdécembre, 2011Algérie, Égypte, Iraq, Jordanie, Maroc, Soudan, République arabe syrienne, Tunisie, Afrique septentrionale, Asie occidentale
In this study, an economic evaluation of water-use efficiency technologies proposed and tested by the agronomic team in the Tadla Irrigated Perimeter was carried out. To capture climatic variability, the analysis was conducted during two contrasting years (dry and wet). Total annual rainfall was 357 mm in 2005/06 (wet year) and 296 mm in 2006/07 (dry year). During the first year, precipitation was well distributed throughout the season. However, the second year was wet at the beginning, dry in the middle and very wet at the end of the season.
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