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1.
Investment in soil conservation in northern Ethiopia: the role of land tenure security and public programs 总被引:5,自引:0,他引:5
A double hurdle statistical analysis of 250 farms in the Tigray region of Ethiopia reveals different causal factors for soil conservation adoption versus intensity of use. Farmers' reasons for adopting soil conservation measures vary sharply between stone terraces and soil bunds. Long‐term investments in stone terraces were associated with secure land tenure, labour availability, proximity to the farmstead and learning opportunities via the existence of local food‐for‐work (FFW) projects. By contrast, short‐term investments in soil bunds were strongly linked to insecure land tenure and the absence of local food‐for‐work projects. Public conservation campaigns on private plots reduced adoption of both stone terraces and soil bunds. Whereas capacity factors largely influenced the adoption decision, expected returns carried more influence for the intensity of stone terrace adoption (measured as metres of terrace per hectare). More stone terracing was built where fertile but erodible silty soils in higher rainfall areas offered valuable yield benefits. Intensity of terracing was also greater in remote villages where limited off‐farm employment opportunities reduced construction costs. These results highlight the importance of the right kind of public interventions. Direct public involvement in constructing soil conservation structures on private lands appears to undermine incentives for private conservation investments. When done on public lands, however, public conservation activities may encourage private soil conservation by example. Secure land tenure rights clearly reinforce private incentives to make long‐term investments in soil conservation. 相似文献
2.
This article investigates the long-term pricing relationship among crude oil, unleaded gasoline, and heating oil futures prices, and finds that these commodities futures prices are cointegrated. The study finds that the spreads between crude oil and its end products are stationary. Furthermore, this article investigates the risk arbitrage opportunities in three types of popularly traded petroleum futures spreads and finds that historically profitable risk arbitrage opportunities existed and were statistically significant. However, one cannot be certain that these opportunities still exist. The research also finds that moving averages are valid test variables for measuring spreads. Statistical and tabular constructions are used to illustrate findings. © 1999 John Wiley & Sons, Inc., Jrl Fut Mark 19: 931–955, 1999 相似文献
3.
This study investigates the relation between petroleum futures spread variability, trading volume, and open interest in an attempt to uncover the source(s) of variability in futures spreads. The study finds that contemporaneous (lagged) volume and open interest provide significant explanation for futures spreads volatility when entered separately. The study also shows that lagged volume and lagged open interest, when entered in the conditional variance equation simultaneously, have greater effect on volatility and substantially reduce the persistence of volatility. This finding seems to support the sequential information arrival hypothesis of Copeland (1976). Finally, the findings of this study also suggest a degree of market inefficiency in petroleum futures spreads. © 2002 Wiley Periodicals, Inc. Jrl Fut Mark 22:1083–1102, 2002 相似文献
4.
Berhanu Nega 《Forum for Social Economics》2016,45(4):283-308
Research on development has moved away from short-term performance to long-term determinants of success. This paper identifies historical factors that shaped the development of key institutions, the degree to which these institutions affected past economic outcomes and, more importantly, which ones are influencing contemporary performance. We first look at the trend in long-term economic performance for the continent compared with other regions of the world. The paper then evaluates the various explanations provided by the standard development model to explain this performance for Africa. The paper shows that the most important long-term determinant of economic and social performance in the continent has been the nature of the distribution of power, which shaped the distribution of economic resources. Furthermore, the paper argues that the distribution of power and the institutions that ensure this distribution were shaped by a number of historical events whose impact still endures. 相似文献
5.
This paper discusses the impact of the rise of non-governmental organizations (NGOs) and social entrepreneurs on economic development, with a special focus on how they have been used in Africa. The paper describes the decline of the state and the rise of NGOs as a force in economic development under neoliberalism. We then turn to two of the major problems with the roll-back of the state in Africa: the inherent weaknesses of nonstate actors in the development process, and the significant cost that is incurred by undermining the role of state. The paper concludes by suggesting the necessity of reinserting the state as the major vehicle for economic development, albeit in productive partnership with NGOs and social entrepreneurs. 相似文献
6.
Development in Africa has been stalled for decades in a vicious cycle of poverty, underdevelopment, corruption, and conflict. In this paper, we argue that donors should focus on democracy and accountability as a first priority in development aid. We use the theory of comparative institutional advantage to identify the key institutions that are most likely to facilitate economic development in communities in the modern world. These institutions include an efficient non-corrupt government sector. Subsequently, we discuss how a lack of democracy and accountability inevitably undermines development efforts and investment, referring especially to the Ethiopian experience but also considering the experiences of other African dictatorships. Finally, we discuss how donors, by emphasizing democracy and accountability along with other policies that support democratic institutions, have a greater chance of effectively contributing to African economic development. 相似文献
7.
Berhanu Abegaz 《Journal of Agrarian Change》2005,5(3):299-333
The paradox of Ethiopia's agrarian economy is that, despite underwriting a world civilization, the transition to an industrial economy has eluded it. Using a model of Afro-Asiatic tributarism, we attribute this outcome to endemic extractive contests between a predominantly landed peasantry and a titled, prebendary overlord class. The latter's strategy of political accumulation inevitably engendered immiserization of overlord and peasant alike by privileging diversion over production. The surplus was then dissipated on unproductive consumption, national defence and internecine strife. Lacking a strong state to mitigate predation and political instability, the Ethiopian peasant rationally 'chose' to be efficiently, albeit self-sufficiently, poor. 相似文献
8.
Official donor policy towards Africa seems to be informed by the twin requirements of alleviating poverty on the one hand
and ensuring respect for human rights and democratization on the other. In practice, when these interests conflict, as they
usually do in Africa, donors tend to choose to continue supporting dictatorships, arguing that economic development will eventually
lead to democratization. This paper argues that this faulty reasoning is a product of modernization theory that has had undue
influence in western policy circles. Based on a broad survey of the literature, the paper shows that there is no theoretical
or empirical basis for the claim that authoritarian regimes would provide better economic performance than democracies in
general and particularly in Africa. Furthermore, available evidence suggests that the lack of democratization (defined broadly
to include the substance of democracy such as government accountability and basic freedoms in addition to meaningful democratic
elections) is a key constraint on economic and social development in Africa. Finally, the paper argues that even when the
empirical case to establish a definite causal relationship between democratization and development cannot be ascertained,
a very strong case can be made for prioritizing democratization for the long term societal transformation of the continent. 相似文献
9.
Inequities and inefficiencies in development aid arise from donor–recipient motivational conflicts, agency problems, and institutional deficiencies. Recent thinking on reforming official aid recommends technocratic solutions including recipient ownership, selectivity, budgetary grants, and multilateralization of aid management. Locating persistent policy failure in Africa primarily in its political institutions, this paper explores three alternative models of multilateral aid for reconciling need and effectiveness. They are the European Union's (EU's) model of regional aid, the International Development Association's (IDA's) model of concessional loans, and a synthesis model (S-model). Implications are drawn for redesigning aid to Africa that would adequately account for the peculiarities of the world's most prominent development challenge. 相似文献
10.
This article examines the role of institutional services of credit, input supply, and extension in the overall commercial transformation process of smallholder agriculture in Ethiopia. Survey data collected in 2006 from 309 sample households in three districts of Ethiopia are used for the analyses. Tobit regression models are used to measure the effect of access to services on the intensity of inputs use for fertilizer and agrochemicals. A probit model is used to measure these effects on the adoption of improved seeds. Intensity of use of seeds is analyzed using an ordinary least squares model. Logarithmic Cobb–Douglass functions are estimated to analyze the effect of access to services on crop productivity. Heckman's two‐stage estimation is used to examine determinants of household market participation and the extents of participation. Results show that access to institutional support services plays a significant role in enhancing smallholder productivity and market orientation. Our results imply that expanding and strengthening the institutional services is critical for the intensification and market orientation of smallholder agriculture in Ethiopia. In particular, appropriate incentives and regulatory systems are urgently needed to encourage the involvement of the private sector in the provision of agricultural services. 相似文献