全文获取类型
收费全文 | 33篇 |
免费 | 6篇 |
专业分类
财政金融 | 3篇 |
工业经济 | 2篇 |
计划管理 | 3篇 |
经济学 | 10篇 |
运输经济 | 1篇 |
贸易经济 | 6篇 |
农业经济 | 11篇 |
经济概况 | 3篇 |
出版年
2018年 | 1篇 |
2017年 | 3篇 |
2016年 | 3篇 |
2015年 | 2篇 |
2014年 | 3篇 |
2013年 | 4篇 |
2012年 | 2篇 |
2011年 | 2篇 |
2010年 | 2篇 |
2009年 | 1篇 |
2008年 | 1篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1997年 | 1篇 |
1992年 | 1篇 |
1986年 | 2篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1979年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有39条查询结果,搜索用时 15 毫秒
1.
Francis Tsiboe Bruce L. Dixon Lawton L. Nalley Jennie S. Popp Jeff Luckstead 《Agricultural Economics》2016,47(3):329-339
This study measures the economic impact of the first phase of the Cocoa Livelihood Program (CLP‐I), a current World Cocoa Foundation (WCF) project, sponsored by the Bill and Melinda Gates Foundation and aimed at improving the livelihood of over 200,000 small cocoa producers in sub‐Saharan Africa via training, crop diversification, and farmer‐based organizations. Using data collected from 2,048 pre‐ and post‐CLP‐I interviews of cocoa producers in Ghana, Cote d'Ivoire, Nigeria, and Cameroon, the results show that yield enhancements attributable to CLP‐I are 32%, 34%, 50%, and 62% in Ghana, Côte d'Ivoire, Nigeria, and Cameroon, respectively. Using a total program cost of $151–$200 per beneficiary and estimated annual benefits of $109–$322 per beneficiary over 25 years, the benefit‐cost ratios are estimated to range from $18 to $62 for every dollar spent on human capital development. These results suggest the WCF should endeavor to increase the number of farmers who receive all, not some, of the components of the program. This would not only help ensure that each producer obtains as much human capital as possible from each of the training programs but increases the probability of reaching the CLP goal of doubling the income of cocoa‐growing households. 相似文献
2.
In recent years, many rural areas have turned to tourism as a way of reviving their communities. One challenge to such efforts is that community leaders in these areas often have limited experience with tourism and consequently lack the knowledge and resources to best facilitate sustainable tourism initiatives. Moreover, an influx of tourists to an area puts new demands on infrastructure. Information about tourists' itineraries can help communities to address new challenges that result from tourism, however using emerging technologies such as GPS and Internet-based map surveys can be expensive and require expertise many rural tourism planners do not have. Paper-based itinerary mapping methodology can be a cost effective way of providing local officials, tourism planners, and businesses with important information to inform decisions about how to invest limited resources. This study applies paper-based itinerary mapping to an emerging wine tourism area in a rural county in the US state of Michigan. Because it involves tourists travelling from place to place within a region, wine tourism is particularly well-suited for itinerary mapping. Results provide specific recommendations to local officials, tourism planners, and businesses. Moreover, the study offers an example to researchers interested in conducting studies that use paper-based itinerary mapping methodology. 相似文献
3.
Challenges for land system science 总被引:3,自引:0,他引:3
Mark D.A. Rounsevell Bas Pedroli Karl-Heinz Erb Marc Gramberger Anne Gravsholt Busck Helmut Haberl Søren Kristensen Tobias Kuemmerle Sandra Lavorel Marcus Lindner Hermann Lotze-Campen Marc J. Metzger David Murray-Rust Alexander Popp Marta Pérez-Soba Anette Reenberg Angheluta Vadineanu Peter H. Verburg Bernhard Wolfslehner 《Land use policy》2012,29(4):899-910
While considerable progress has been made in understanding land use change, land system science continues to face a number of grand challenges. This paper discusses these challenges with a focus on empirical land system studies, land system modelling and the analysis of future visions of land system change. Contemporary landscapes are contingent outcomes of past and present patterns, processes and decisions. Thus, empirical analysis of past and present land-use change has an important role in providing insights into the socio-economic and ecological processes that shape land use transitions. This is especially important with respect to gradual versus rapid land system dynamics and in understanding changes in land use intensity. Combining the strengths of empirical analysis with multi-scale modelling will lead to new insights into the processes driving land system change. New modelling methods that combine complex systems thinking at a local level with macro-level economic analysis of the land system would reconcile the multi-scale dynamics currently encapsulated in bottom-up and top-down modelling approaches. Developments in land use futures analysis could focus on integrating explorative scenarios that reflect possible outcomes with normative visions that identify desired outcomes. Such an approach would benefit from the broad and in-depth involvement of stakeholders in order to link scientific findings to political and societal decision-making culminating in a set of key choices and consequences. Land system models have an important role in supporting future land use policy, but model outputs require scientific interpretation rather than being presented as predictions. The future of land system science is strongly dependent on the research community's capacity to bring together the elements of research discussed in the paper, via empirical data collection and analysis of observed processes, computer simulation across scale levels and futures analysis of alternative, normative visions through stakeholder engagement. 相似文献
4.
Desire to be ethical or ability to self‐control: Which is more crucial for ethical behavior? 下载免费PDF全文
Promoting ethical decisions and behaviors is challenging for any organization. Yet managers are still required to make ethical decisions under conditions which deplete their self‐control resources, such as high stress and long hours. This study examines the relationships among symbolic and internal moral identity, self‐control, and ethical behavior, and investigates whether self‐control acts as the mechanism through which moral identity leads to ethical behavior. Findings indicate that internal moral identity overrides symbolic moral identity in the relationship with self‐control and that self‐control fully mediates the relationship between internal moral identity and ethical behavior. The implications for organizations is that while rules, procedures, and ethics training are useful, managers with a strong moral compass will be more likely to practice self‐control leading to more ethical behaviors. 相似文献
5.
6.
In this paper we test for asymmetric behaviour of business cycles for the G7 countries, using the entropy-based test for asymmetry suggested by Racine and Maasoumi [Racine, J.S., & Maasoumi, E. (in press-a). A versatile and robust metric entropy test of time-reversibility, and other hypotheses, Journal of Econometrics; Racine, J.S., & Maasoumi, E. (in press-b). A robust entropy based test for asymmetry. Econometric Reviews.]. We find overwhelming evidence of symmetry. In only 14% of the cases, we find some evidence of asymmetric behaviour of GDP and per capita GDP. More importantly, the period marked by the flexible exchange rate regime, over which much of the empirical work for the G7 countries has been conducted, evidence suggests that the two GDP series are symmetric. 相似文献
7.
8.
Data Aggregation Issues for Crop Yield Risk Analysis 总被引:1,自引:0,他引:1
Margot Rudstrom Michael Popp Patrick Manning Edward Gbur 《Revue canadienne d'agroeconomie》2002,50(2):185-200
With increased emphasis on risk management in agriculture and a lack of disaggregated or farm‐level yield time series, decision makers are often faced with having to make adjustments to temporal yield risk measures obtained from readily available but aggregated yield data. This paper provides some empirical evidence on what type of aggregation bias to expect when measuring temporal yield risk using yield observations averaged across a region relative to yield risk estimated from quarter‐section yield time series in wheat. This study highlights some of the challenges faced when estimating aggregation distortions in measuring yield risk defined by temporal variance, especially given the nature of the empirical data set used. Cluster analysis, visual examination of relative frequency distributions and mapping of yield risk clusters suggest that using a readily available, aggregate temporal yield risk measure has the tendency to underestimate yield risk observed at the quarter‐section level and that clear, geographic yield risk boundaries do not exist in municipalities or across larger areas in this study. Further research on crops more risky than wheat appears promising. Avec un plus grand intéret sur la gestion du risk dans l'agriculture et un manque de données détaillees ou bien de collections de séries temporelles sur les rendements, les décideurs sont souvent tenus d'apporter des correctifs aux measures du risk obtenues a partir des données de rendements qui sont disponibles. Cet artcle apporte une preuve empirique du type de biais lie a l'agrégation qui peut être présent dans le calcul du risk de rendement temporel obtenu a partir de rendements moyens de blé observés au niveau régional en comparaison du risk de rendement qui est estimé a partir de données basées sur des quart‐de‐sections. Cette étude met en exergue quelques uns des obstacles qui se présentent dans l'estimation de distosions liées a l'aggrégation dans le calcul du risk de rendement défini par la variance temporelle, speciallement étant donne la charactère empirique des données utilisées. L'analyse de groupe, l'examen visual de la distribution des fréquences relatives, et la cartographie de classes de risk de rendement suggèrent que l'utilisation de la measure du risk de rendement basée sur des données disponibles de risk aggrège temporel a tendence a sousestimer le risk de rendement observe au niveau des quart‐de‐sections et qu'il n'y a pas de frontières de risk de rendement certaines, géographiques qui existent entre les municipalités ou bien a travers les zones plus larges examinées dans cette etude. 相似文献
9.
10.
Perhaps the greatest strategist of all time was not a business executive but a general. Helmuth von Moltke, chief of the Prussian and German general staffs from 1858 to 1888, issued "directives" to his officers rather than specific commands. These guidelines for autonomous decision making encouraged Moltke's subordinates to show individual initiative. In this article, Hans Hinterhuber and Wolfgang Popp translate Moltke's example into business terms. According to Moltke, strategy is applied common sense and cannot be taught. The authors suggest that good entrepreneurs and managers--along with generals--are born with the qualities that make them successful. But even if managers have the potential to be good strategists, they must develop and hone their natural talents. And CEOs and top management can help by identifying and promoting such talents in their employees. Hinterhuber and Popp have created a questionnaire that helps measure strategic management competence. Managers and entrepreneurs take this test themselves, answering ten questions such as, "Do I have an entrepreneurial vision?", "Do I have a corporate philosophy?", and "Do I have competitive advantages?" Using the questionnaire, company management can evaluate managers being considered for a promotion. At the same time, those who take the test can use it to determine their own performance as strategists. Strategic managers provide subordinates with general guidelines, just as Helmuth von Moltke issued directives to his officers. And outstanding entrepreneurs create a corporate culture in which their vision, philosophy, and business strategies are implemented by employees who think independently. 相似文献