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81.
82.
    
The literature on territorial innovation modes has identified the development of a diverse set of innovation systems at multiple levels of analysis. However, there are certain gaps that do not allow their adaptation to the particularities of certain territories. Despite the multiple concepts related to innovation systems approach, the state of the art does not yet provide a useful analytical approach for a deep and comprehensive characterization of territories with a high sectoral and technological specialization. This paper introduces an analytical framework based on a regional open and sectoral innovation system, which is qualitatively tested in the Durango County (Spain). The aim of this paper is to introduce a subtype of innovation system that meets the requirements and needs of a located micro-territory with a high level of sectoral specialization.  相似文献   
83.
I develop new measures of the value of active mutual fund management using portfolio holdings. These measures simultaneously test for trading and selection skill within stocks, industries, and characteristics. I demonstrate that most of the skill documented in prior studies comes from correctly trading stocks within industries, though funds also have some skill in timing industries. However, prior research focuses on the period 1980‐1994. I also test the hold out sample 1995‐2007. Contrary to prior results, the latter period (and the full sample) demonstrates that mutual funds generate no excess returns from any category of skill.  相似文献   
84.
85.
Chronic food production deficits since the early 1970s have prompted policymakers of Burkina Faso to emphasize technological research with the goal of increasing the production of the most-consumed locally-grown cereals: sorghum, millet and maize. Meanwhile, urban consumers have been developing preferences for rice and wheat, cereals that are primarily imported. This study estimates demand relationships among food items in Ouagadougou, Burkina. The results of the estimation suggest that prices, income, household composition, education, marital status and urbanization were jointly important in explaining household expenditure allocations. Both local and imported cereal consumption responded positively to an income increase. However, incremental income changes would lead to relatively greater consumption of locally produced cereals by low-income households whereas high-income households would consume relatively more wheat and rice. The household model is then used to demonstrate its relevance in addressing food policy issues, by forecasting the levels of urban grain demand under alternative income and demographic scenarios. With increased production due to advances in technology, the urban demand levels do not exhaust the rural surplus of local cereals, but deficits persist in the rice-wheat sector. The results underscore the importance of technological research since Burkina could become self-sufficient in at least the production of sorghum, millet and maize.  相似文献   
86.
Spotting management fads   总被引:4,自引:0,他引:4  
Business fads can change companies, for better or worse. They can introduce useful ideas but often fail to deliver on promises. So how can managers tell a fad from a tool that might endure? For one thing, beware of suspiciously simple techniques. If they seem too easy, they probably are.  相似文献   
87.
    
There has recently been much discussion of the possible use of internationally coordinated indirect taxes, or equivalent charges, on international aviation, whether as a source of finance for development or as part of a response to heightened concerns with climate change. This paper considers the strengths and weaknesses of the leading candidate instruments of this kind. It argues that, on both policy and administration grounds, the case for increasing indirect taxes on international aviation is strong: the indirect tax burden on international aviation is very low, yet aviation contributes significantly to border-crossing environmental damage, is just as proper an object of taxation as any other commodity, and incipient tax competition is likely to result in these taxes being set at inefficiently low levels. But the form(s) in which such taxes are levied matters: a tax on aviation fuel would address the key border-crossing externalities most directly; a tax on final ticket values would have greater revenue potential, and perhaps some distributional advantage; departure/arrival taxes face the least legal obstacles, but are much blunter instruments. Optimal policy, it is shown, typically requires deploying both a fuel tax and a ticket tax, and the paper explores, both in principle and by simulation, the key considerations and trade-offs involved in designing a suitable indirect tax regime for international aviation.  相似文献   
88.
    
We construct new measures of fund style, performance and activity from linear combinations of off‐the‐shelf stock‐market indices. A fund's benchmark portfolio is a linear combination of two or more reference portfolios that in a least‐squares sense most closely approximates the fund's portfolio. The resulting linear combination scalar is itself a measure of fund style and the distance between a fund and its benchmark is a measure of fund activity. Our approach has a number of advantages over existing characteristic‐matching methods. We illustrate our approach using a data set of US institutional funds.  相似文献   
89.
A group of distinguished finance academics and practitioners discuss a number of topical issues in corporate financial management: Is there such a thing as an optimal, or value‐maximizing, capital structure for a given company? What proportion of a firm's current earnings should be distributed to the firm's shareholders? And under what circumstances should such distributions take the form of stock repurchases rather than dividends? The consensus that emerges is that a company's financing and payout policies should be designed to support its business strategy. For growth companies, the emphasis is on preserving financial flexibility to carry out the business plan, which means heavy reliance on equity financing and limited payouts. But for companies in mature industries with few major investment opportunities, more aggressive use of debt and higher payouts can add value both by reducing taxes and controlling the corporate free cash flow problem. In such cases, both leveraged financing and cash distributions through dividends and stock buybacks signal management's commitment to its shareholders that the firm's excess cash will not be wasted on projects that produce low‐return growth that comes at the expense of profitability. As for the choice between dividends and stock repurchases, dividends provide a stronger commitment to pay out excess cash than open market repurchase programs. Stock buybacks, at least of the open market variety, preserve more flexibility for companies that want to be able to capitalize on unpredictable investment opportunities. But, as with the debt‐equity decision, there is an optimal level of financial flexibility: too little can mean lost investment opportunities, but too much can lead to overinvestment.  相似文献   
90.
CDM is an offset mechanism designed to reduce the overall cost of implementing a given global target for greenhouse gas (GHG) emissions in Annex B countries of the Kyoto Protocol. A problem with CDM is that it provides incentives to increase, if possible, the baseline emissions for CDM projects, to optimize the value of CDM credits. Under a “relative baselines” crediting rule, the CDM may also unduly increase energy consumption even during the CDM implementation phase. Less than full offset of emissions is then likely, and the CDM will lead to increased global GHG emissions. We show that this is a potentially serious problem, due to asymmetric information between project hosts and the regulator, the CDM Executive Board, and to the basic rules for crediting CDM quotas. In certain cases, the use of “relative baselines” to credit CDM quotas could fully eliminate any emissions reductions achieved by CDM projects. Remedies to overcome the problems are discussed. They may involve setting the baseline independently of initial energy intensity and final output for the project; or involve information revelation mechanisms that minimize policy losses and net rent capture by project sponsors.  相似文献   
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