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201.
Labour commodification,differentiation, and marginalization of the peasantry in Sella Limba (Sierra Leone) from 1950 to the present 下载免费PDF全文
In Sierra Leone, migration to diamond fields and the development of cash crops have contributed to the increasing integration of the peasantry in the national and global economy. Based on the study of a small northern chiefdom, Sella Limba, we describe how the labour commodification have led to the perversion of “traditional” social relations based on anteriority, and to the break‐up of large domestic groups into smaller, more precarious ones. At the same time, manual agriculture has been marginalized by massive cheap rice imports and remained very low in capital intensity. In this context, we show how low labour productivity curtails opportunities for long‐term social and economic differentiation. Farmers combine “modern” and “traditional” social relations, developing hybrid accumulation strategies that are sometimes close to mere survival. 相似文献
202.
A Spatial Econometric Approach to the Economics of Site-Specific Nitrogen Management in Corn Production 总被引:7,自引:1,他引:7
Luc Anselin Rodolfo Bongiovanni Jess Lowenberg-DeBoer 《American journal of agricultural economics》2004,86(3):675-687
The objective of this study is to determine the potential for using spatial econometric analysis of combine yield monitor data to estimate the site-specific crop response functions. The specific case study is for site-specific nitrogen (N) application to corn production in Argentina. Spatial structure of the yield data is modeled with landscape variables, spatially autoregressive error and groupwise heteroskedasticity. Results suggest that N response differs by landscape position, and that site-specific application may be modestly profitable. Profitability depends on the model specification used, with all spatial models consistently indicating profitability, whereas the nonspatial models do not. 相似文献
203.
Luc de Brabandere Author Vitae Alan Iny Author Vitae 《Technological Forecasting and Social Change》2010,77(9):1506-1512
To be creative and make change happen, leaders must do more than simply ‘think outside the box’, as the traditional business manuals suggest, using the popular American expression. After all, the space outside the box is infinitely expansive. Moreover, there can be no guarantee that a solution to the problem will be found. The answer: ‘Think in new boxes.’ This requires developing the right new box; in other words, useful new models, a helpful new approach to a problem. That is the real art of practical creativity. This short article outlines the approach (Thinking in New Boxes) and its application to classic scenario planning with a few examples. The authors also present the ‘Expressway to Scenarios’, an approach that wins in impact and practicality what it loses in deep analysis, by having top executives involved in key steps. 相似文献
204.
Family Transfers Involving Three Generations 总被引:3,自引:0,他引:3
Most models of family transfers consider only two generations and focus on two motives: altruism and exchange. They also assume perfect substitution between inter-vivos downward transfers and bequests. Based on French evidence, we show that parent-to-child transfers belong to three distinct categories (investment in child's education, financial assistance, wealth transmission), and advocate a three -generation framework. Thus, transfer behavior of parents toward their children is strongly influenced by the behavior of their own parents. There is also some evidence of the Cox and Stark demonstration effect: parents help their own parents, expecting to receive comparable support from their children. Such behavior can be regarded as indirect reciprocity : the beneficiary does not give back to the initial giver but to a third person of another generation.
JEL classification : D 10; D 31; D 63; D 64 相似文献
JEL classification : D 10; D 31; D 63; D 64 相似文献
205.
Asset ownership indices are widely used as inexpensive proxies for consumption. We show that these indices can be augmented using dichotomous indicators for consumption, which are equally easy to obtain. Using multiple rounds of Living Standards Measurements Study surveys from Malawi, Uganda, Rwanda, Tanzania, and Ghana, we construct indices using different item subcategories and perform a meta‐analysis comparing the indices to per capita consumption. The results show that the standard asset indices, derived from durable ownership and housing characteristic indicators, perform well in urban settings. Yet, in rural samples and when identifying the extreme poor, household rankings and poverty classification accuracy can be meaningfully improved by adding indicators of food and semi‐durable consumption. We find small improvement from using national weights in urban samples but no improvement from using alternative construction methods. With most of Africa’s poor concentrated in rural areas, these are important insights. 相似文献
206.
Under International Financial Reporting Standards, managers can use two approaches to increase the estimated fair value of goodwill in order to justify not recognizing impairment: (1) make overly optimistic valuation assumptions, and (2) increase future cash flow forecasts by inflating current cash flows. Because enforcement constrains the use of optimistic valuation assumptions, we hypothesize that enforcement influences the relative use of these two choices. We test this hypothesis by comparing a sample of 1,958 firms from 36 countries that are likely to delay recognizing goodwill impairment (suspect firms) to a sample of control firms. First, we find that firms in high‐enforcement countries use a higher discount rate to test goodwill for impairment than firms in low‐enforcement countries. We also find a more positive association between discount rate and upward cash flow management for suspect firms than for control firms. This result is consistent with suspect firms substituting optimistic valuation assumptions with inflated current cash flows. Second, we find that, relative to control firms, suspect firms exhibit higher upward cash flow management in high‐enforcement countries than in low‐enforcement countries. Third, we show that suspect firms in high‐enforcement countries are more likely to eventually impair goodwill. 相似文献
207.
Stakeholders’ engagement with corporate messages is crucial for companies that want to increase their social media coverage. However, our understanding of the content-related factors that drive stakeholders’ engagement is still poor. Drawing from the literature on news selection and distribution, this paper explores whether the relevant news values that are already found in corporate messages could also explain greater engagement in social media. In particular, six news factors were examined in a sample of 2331 tweets that were posted by the Euro Stoxx 50 companies. The results show that four news factors (in particular, Prominence, Entertainment, Immediacy, and to a lesser extent Human interest) play a role in the drive of content sharing through retweets and favorites. Additionally, the inclusion of hashtags and media content helps increase retweets and favorites. Finally, we observe differences among industries. In particular, firms operating in business-to-business industries obtain less reach through sharing. The implications of these results are relevant for social media strategists as they suggest avenues to increase followers’ engagement with company-produced content. 相似文献
208.
Many goods are characterized by the fact that their utility increases with the number of consumers who buy them. It is the case for computers or communication networks, for example. Such goods are said to be subject to network externalities. We study those externalities in the context of a product differentiation model where product characteristics (or the image of the firm) are taken into account.We consider a market where two firms sell differentiated products and we study an equilibrium where the firms are competing in quantities (Cournot model) as well as in quality (two-stage game). We show how the degree of differentiation between the firms (or their products) and the compatibility decision are affected by the externality effect. 相似文献
209.
We study the effect of mandatory adoption of International Financial Reporting Standards (IFRS) in Europe in 2005 on conditional conservatism. We capture conditional conservatism with a modified version of the Khan and Watts measure (C_Score) that also controls for potential shifts in unconditional conservatism and cost of capital. From a sample of 13,711 firm‐year observations drawn from 16 European countries spanning the 2000–2010 period, we document an overall decline in the degree of conditional conservatism after the adoption of IFRS. We show that the decline in conditional conservatism is less pronounced for countries with high quality audit environments and strong enforcement of compliance with accounting standards using the Brown et al. audit and enforcement index. As asset impairment tests are a key mechanism ensuring conditional conservatism in the IFRS framework, we further examine these. We show that firms booking an asset impairment present a smaller decline in the degree of conditional conservatism relative to firms that do not. We also demonstrate that firms that do not book an asset impairment when evidence suggests the probable need to do so experience a more pronounced reduction in conditional conservatism. We argue that IFRS are conceptually conditionally conservative but that inappropriate application of conditional conservatism principles is likely to prevent financial reporting from reaching the level of conservatism targeted by the International Accounting Standards Board (IASB). 相似文献
210.
Lucía Díez Xavier Cussó Roc Padró Inés Marco Claudio Cattaneo José Ramón Olarieta 《国际农业可持续发展杂志》2018,16(4-5):399-417
The analysis of energy efficiency of agroecosystems from a sociometabolic perspective is a useful way to assess the sustainability of farm systems. In this paper we examine the transition of a Mediterranean agroecosystem from an organic farm system in the mid nineteenth century to an industrialized one at the end of the twentieth century by means of the technologies and ideology of the Green Revolution. Given that many of the world’s agricultural systems have experienced, or are currently experiencing this transformation, our results are relevant for building more sustainable agricultural systems in future. Our results highlight the relevance of livestock density, and the flows of biomass reused and unharvested biomass as key elements affecting the sustainability of the agroecosystem not only from a socioeconomic perspective, but also from an agroecological point of view. Additionally, from a biocultural perspective our investigation sustains the relevance of the study of traditional farm systems for the development of a sustainable agriculture. 相似文献