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排序方式: 共有482条查询结果,搜索用时 15 毫秒
1.
Caroline White Leslie Bank Sean Jones Monga Mehlwana 《Development Southern Africa》1997,14(3):413-423
For a variety of reasons, this article argues, electricity must be seen by policy‐makers in South Africa not as the sole provider of all future household energy needs, but rather as one component of an energy mix which includes such ‘transitional’ fuels as coal, gas and paraffin. The reasons for this are that electricity is expensive for poor households; it is subject to power failures and disconnections for non‐payment; the poor find it difficult to monitor and to control their consumption; appliances are expensive and several are required to make best use of electricity; people prefer other fuels because they are familiar and have strong personal and cultural associations, and because Eskom is not trusted owing to its past ties to illegitimate local authorities and misunderstanding of electricity and how its use is monitored and charged for. Further, it is mistaken to equate ‘development’ with total electrification: most developed countries have fuel mixes which include gas and coal, particularly for cooking and heating. Accepting an affordable fuel mix for the poor in particular would focus attention on the problems currently associated with paraffin, gas and coal, namely fires, poisoning and air pollution. 相似文献
2.
This paper demonstrates howadditional rents are generated in a fisherycharacterized by intraseasonal variation infish characteristics, including size,condition, and composition. Based on anexpanded conceptual model of the optimalharvest rule, fish characteristics affect preand post harvest production yields and outputprices. A dynamic empirical model, which uses asystem of quality characteristics and anhedonic equation, illustrates the complexrelationships and management choices associatedwith internalizing seafood qualitycharacteristics in a hake fishery. The modelretains the regulated open access managementsystem, but controls intertemporal andintersectoral quotas, production portfolios,and total allowable catch. Results demonstratethat including revenue-side effects frominternalizing fish quality can generatesignificantly greater rents and reduce therelative benefits of increased productionyields. If excluded, bioeconomic models canunderestimate the level of regulatory rentdissipation and overemphasize managementobjectives such as full utilization, whichcould misdirect processing decisions and resultin a suboptimal resource management plan.Implications for data collection,multidisciplinary analysis, and improvements inmarine resource management are discussed. 相似文献
3.
This paper uses an asymmetric multivariate model to investigate asymmetries in employment and pricing behaviour by firms. This generalises the approach of Granger and Lee (1989) and also exploits the cross equation restrictions on the equations for prices and employment implied by a restricted cost function—the dual to a Cobb‐Douglas production function. Our results suggest that both prices and employment respond asymmetrically to shocks to costs and demand. 相似文献
4.
More ethics research needs to explore the global differences in ethical evaluations. This study explored the relationships among nationality, teleological evaluations, ethical judgments, and ethical intentions using a sample of 222 American and Spanish business professionals. The path analysis indicated that teleological evaluations were related to ethical judgments and that both ethical judgments and teleological evaluations were related to ethical intentions. Executive nationality was related to teleological evaluations and ethical intentions with American individuals having higher teleological assessments and intentions to act ethically than the Spanish individuals. These findings have implications for global companies, which are presented along with the study's limitations and future research suggestions. 相似文献
5.
The first objective of this article is to clarify which model best captures the structure and trend of the influence of social origin on children's education. The second objective is to analyse how general conclusions on historical trends in educational reproduction change if we add mother's status background to the model. Six contrasting hypotheses are derived fromthe body of literature dealing with models on families' socioeconomic status. All hypotheses are translated into empirical models and their explained variance is compared. A pooled data set is used that contains data from the Netherlands, West Germany, and the USA. The Modified Dominance Model, that distinguishes the influence of the highest from thelowest status parent, has the best model fit. Regarding the second objective we see that adding the mother's influence to that of the father's does not change general conclusions on trends in educational reproduction. Over time the influence of both parents decreases continuously. However, the influence of the mother's education and occupational status on children's educational attainment is substantive. 相似文献
6.
Ralph Hamann Daisy Kambalame Sean De Cleene Nkosithabile Ndlovu 《Development Southern Africa》2008,25(1):99-118
Responsible competitiveness clusters are cross-sector collaboration initiatives focused on identifying and acting upon synergies between sustainable development and economic competitiveness objectives. By means of three case studies in southern Africa this paper investigates the incentives, opportunities and challenges encountered in the emergence of such clusters. The first case study focuses on a regional response to the development challenges encountered in a South African mining area, the second describes efforts to make the Malawian agriculture sector more inclusive and competitive and the third discusses options for enhancing the competitiveness of the Lesotho textile sector. The paper concludes with a discussion of the role of international trade networks, the institutional framework, public sector support and internal governance processes as key factors influencing the initial level of success of these initiatives. 相似文献
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The evidence presented in the paper rejects the twin deficit hypothesis for the Austrian current account balance during the
last two decades. The results are based on an estimate of a vector error correction model including quarterly data for the
current account balance and potentially relevant variables driving its dynamics. We compute the variance decomposition of
the current account's forecast error and its generalized impulse responses to shocks in the innovations of the system. The
results in favor of intertemporal expenditure reallocation cannot be reproduced within a second analysis including the current
account and a measure of net output, however. The estimated implicit current account balance, interpreted as the discounted
expected change in future net output, does not follow the actual behaviour of the current account.
First version received: June 1999/Final version received: March 2001 相似文献
10.
Expertise, Subversion, and Bureaucratic Discretion 总被引:2,自引:0,他引:2
This article examines a legislature's delegation of policy-makingauthority to an imperfectly controlled, expert bureaucrat. Thelegislature can reduce the bureaucrat's expertise advantagethrough costly investigations of its own before delegating.Further, the bureaucrat is granted discretionary bounds by thelegislature, but can subvert legislative dictates by steppingbeyond them at some cost. I analyze the interaction of preferencedivergence, investigation cost to the legislature, and subversioncost to the bureaucrat on the decision to delegate. The modelshows that, because of the equilibrium effect of subversionon discretion, bureaucrats will want subversion of legislativedictates to be difficult, while legislators want it to be relativelyeasy. It also highlights an indirect effect between preferencedivergence and discretion: preference divergence leads the legislatureto become more expert on policy matters, which leads it to delegateless. 相似文献