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991.
The ‘high speed’ rotavator is used for shallow tillage to create a fine tilth and incorporate crop residues, often with a single tractor pass. Rotavator tillage has spread quickly in many parts of South Asia, despite short-term experimental trials suggesting deteriorating soil quality and crop yield penalties. Evidence of rotavator impacts on farmer fields across soil gradients and time is largely absent. From a farm household survey conducted among wheat farmers in Nepal, we estimate wheat yield and profitability outcomes for rotavator adopters and non-adopters using propensity score matching. We find that rotavator adoption leads to inferior outcomes, despite significant cost savings for land preparation (US$ 11–15 per hectare). With rotavator adoption, farmers lose about 284–309 kg of wheat grain and about US$ 93–101 of profits on average per hectare per season, and these penalties increase with longer-term use of the technology. Adoption of rotavator appears to be driven by the cost and time savings for land preparation. Against this backdrop, new policy and extension efforts are required that discourage rotavator use and favour more sustainable tillage technologies.  相似文献   
992.
Corporations generally do not have a formal process for evaluating the effectiveness of their treasury departments in managing debt. To the extent that corporate borrowing decisions are predicated on "market timing" rather than matching the interest rate sensitivity of the firm's liabilities to that of its assets, the firm is effectively making bets on interest rates that should be monitored and evaluated.
The author has developed an approach that allows for periodic reporting of treasury's performance to investors and that also provides a framework for treasury to compare and choose among alternatives in the capital markets. The basic idea is to calculate a company's liability return and then establish a benchmark portfolio that allows measurement of relative performance. For a nonfinancial corporation, a useful benchmark can be constructed using the collective debt obligations of the company's industry peers. The assumption underlying this benchmark is that the financing of the industry as a whole is designed to produce an "optimal" asset-liability configuration and net exposure to interest rates.  相似文献   
993.
This paper uses a social cost‐benefit analysis (SCBA) framework to assess whether rail privatisation in Britain has produced savings in operating costs. The paper shows that major efficiencies have been achieved and consumers have benefited through lower prices, whilst the increased government subsidy has been largely recouped through privatisation proceeds. We also find that output quality is no lower (and is probably better) than under the counterfactual scenario of public ownership (pre‐Hatfield). The achievement of further savings is key to delivering improved rail services in the future. This paper finds that a privatised structure, where shareholders demand a return on their investment, has led to significant improvements in operating efficiency. It remains to be seen whether the new regime, with a not‐for‐profit infrastructure owner, will deliver the same efficiency improvements.  相似文献   
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996.
This paper examines the effect of product market uncertainty and government research and development (R&D) subsidies on firm-level R&D investment. Using a sample of German manufacturing firms, we find that product market uncertainty reduces R&D investment and government R&D subsidies increase R&D investment. Moreover, our results indicate that R&D subsidies mitigate the effect of product market uncertainty on R&D investment. These findings suggest that public policies aimed at increasing business R&D investment can achieve this objective by reducing the degree of uncertainty in the product market.   相似文献   
997.
Post-IPO Operating Performance, Venture Capital and the Bubble Years   总被引:1,自引:0,他引:1  
Abstract:  We analyse the post-issue operating performance of 316 venture-backed and 274 non-venture UK IPOs 1985–2003. The finding of a statistically significant five-year, operational decline exhibited over the full sample period is not robust. Rather it is driven by the dramatic underperformance during the 1998–2000 bubble years while IPOs perform normally in the remaining years. Cross-section regression results indicate support for venture capital certification in the non-bubble years but a significantly negative relationship between operating performance and venture capitalist board representation during the bubble years. The bubble year underperformance is explained by market timing and by low quality companies taking advantage of investor sentiment.  相似文献   
998.
Using only the definition of returns, together with a transversality assumption, we demonstrate that given a dividend process, any one of three variables—expected return, return volatility, and the price–dividend ratio—completely determines the other two. By parameterizing only one of these processes, common empirical specifications place strong, and sometimes counter-factual, restrictions on the dynamics of the other variables. Our findings lend insight into the nature of the risk–return relation and the predictability of stock returns.  相似文献   
999.
abstract From a narrative perspective, organizations' identities are discursive (linguistic) constructs constituted by the multiple identity‐relevant narratives that their participants author about them, and which feature, for example, in documents, conversations and electronic media. By defining collective identities as the totality
of such narratives I draw attention to their complex, and often fragmented and heterogeneous nature. My approach contrasts with much of the theorizing in this field which has tended to homogenize collective identities by emphasizing what is common
or shared, failed to capture the interplay between different communities within organizations, and produced bland, undifferentiated empirical research. In particular, the theoretical framework that I outline focuses attention on the importance of reflexivity, voice, plurivocity, temporality, and fictionality to an understanding of collective identities as locales for competing hegemonic claims. In combination, these notions form a unique conceptual model for theorizing and researching collective identities. This said, a narrative approach also has its limitations, and is proposed as an additional, not exclusive, interpretive lens.  相似文献   
1000.
The method used expert opinions (collected through interviews), scenario generation, and a simple econometric model. Some methodological innovations are reported; eg aids to assist experts in thinking ahead, and in how scenarios are generated and aggregated.  相似文献   
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