三峡库区(重庆段)森林水土保持服务功能价值研究

以三峡库区重庆段为研究对象,采用机会成本法、影子工程法、替代工程费用法等研究方法,核算了三峡库区重庆段的森林水土保持服务功能价值。森林生态系统服务功能中的水土保持服务功能研究结果表明:三峡库区重庆段森林水土保持服务功能总价值为14.802亿元/a,其中减少土地损失的价值为203万元/a、减轻泥沙淤积的价值为1196万元/a、土壤肥力保持价值为14.662亿元/a。为正确的核算三峡库区绿色GDP提供一定的借鉴意义。     

对企业并购估价中威斯通模型的进一步研究

威斯通模型是企业并购估值贴现现金流模型中具有代表性的研究。首先对超常增长而后无增长的威斯通模型作了一点修正;接着建立了企业在超常增长期采取不同投资策略时的估价模型;最后分析了新建模型与原模型的差异,并通过数例对两模型进行了敏感性分析。     

On the determinants of yield spreads between mortgage pass-through and Treasury securities

Yield spreads between mortgage pass-through and U.S. Treasury securities may reflect differences in taxation, phenomena affecting relative supply and demand, and compensation for default, call, and marketability risks on mortgage instruments. Our research empirically models differences in yields between pass-throughs and comparable-maturity Treasuries. We find that interest-rate volatility and the term structure of rates, factors often cited in the mortgage pricing literature as affecting the mortgage call premium, are the primary determinants of movements in these spreads. Moreover, these effects have grown in importance in recent years as exercise of the prepayment option has increased. We also find evidence that liquidity and credit concerns affect the pricing of pass-through securities.     

The Gilt-Equity Yield Ratio and the Predictability of UK and US Equity Returns

A number of financial variables have been shown to be effective in explaining the time-series of aggregate equity returns in both the UK and the US. These include, inter alia , the equity dividend yield, the spread between the yields on long and short government bonds, and the lagged equity return. Recently, however, the ratio between the long government bond yield and the equity dividend yield – the gilt-equity yield ratio – has emerged as a variable that has considerable explanatory power for UK equity returns. This paper compares the predictive ability of the gilt-equity yield ratio with these other variables for UK and US equity returns, providing evidence on both in-sample and out-of-sample performance. For UK monthly returns, it is shown that while the dividend yield has substantial in-sample explanatory power, this is not matched by out-of sample forecast accuracy. The gilt-equity yield ratio, in contrast, performs well both in-sample and out-of-sample. Although the predictability of US monthly equity returns is much lower than for the UK, a similar result emerges, with the gilt-equity yield ratio dominating the other variables in terms of both in-sample explanatory power and out-of-sample forecast performance. The gilt-equity yield ratio is also shown to have substantial predictive ability for long horizon returns.     

企业并购估值中的威斯通模型扩展研究

威斯通模型是企业并购估值贴现现金流模型中具有代表性的研究。在威斯通固定增长模型的基础上,建立了考虑未来经营失败概率的估值模型;对威斯通超常增长而后无增长模型进行了修正,探讨了企业在超常增长期采取不同投资策略对其价值的影响,建立了一个更为简明的估值模型,并给出隐含超常增长期限的一种计算方法。     

Stock Market Valuation, Profitability and R&D Spending of the Firm: The Effect of Technology Mergers and Acquisitions

Abstract:  In this paper, we investigate whether a firm can enhance the effect of its R&D spending on its current market value and future profitability through technology-oriented M&As. On the basis of an analysis of 1,879 M&As, we find that when a technology firm acquires another technology firm, the magnitude of the stock price response to the R&D spending of an acquirer increases by 107% in the year of the M&A. In contrast, we find no such increase in the stock price response to the R&D spending of a non-technology acquirer. We also find that technology acquirers are more successful in converting their R&D spending into positive future profitability than non-technology acquirers. Our results are robust for different alternative specifications of our model and when various firm differences are controlled for.     

‘Adopt a Hypothetical Pup’: A Count Data Approach to the Valuation of Wildlife

The willingness to pay (WTP) for a coyote conservation program is estimated using a novel payment-vehicle, based on how many ‚problem’ coyotes respondents would be willing to sponsor for a year. This hypothetical scenario mimics an increasingly popular type of actual market. Data from a phone survey conducted in Prince Edward Island are analyzed using count data models that consider different processes explaining zero responses and the level of positive responses. This is particularly important in the case of coyotes, often regarded as an economic bad. Estimates of WTP per coyote per year around $18–$22 and annual WTP per contributor of about $46–$57 are obtained.      

品牌强度的影响因素分析及评估方法研究

本文通过分析世界著名品牌价值评估方法，并结合我国品牌管理及评估行业的现状和特点，对品牌价值评估中所涉及到的品牌强度进行了研究，分析了品牌强度的影响因素，并在此基础上应用主成分分析法对品牌强度进行了度量，旨在为实践领域提供可操作性的评估方法。     

VALUING NON-MARKET GOODS USING CONTINGENT VALUATION

Abstract. Contingent valuation is a technique being developed by economists for the valuation of environmental commodities not traded in markets. This paper discusses the major problem areas associated with this method of value estimation. These comprise bias (strategic, hypothetical and design biases); the discrepancy between willingness-to-pay and compensation demanded; the aggregation procedure; the choice of question format; and non-use values. Some evidence from comparative studies is reported, and comments made on the accuracy of contingent valuation answers, Finally, the conditions under which contingent valuation seems to operate best are set out.     

Ambiguity of measured WTP for quality improvements when quantity is unconstrained: a note

This paper addresses the issue of how to estimate by contingentvaluation methods the maximum price consumers are willing topay when a new quality is available for a market good for whichquantity adjustments are possible. We argue that current practice,which typically does not specify a quantity when asking consumersthe price they are willing to pay for a new quality product,fails to identify prospective consumers' behaviour when theyare free to adjust the quantity purchased. Theoretical modelsare discussed for assessing the maximum price consumers arewilling to pay in these cases, and econometric approaches toaddress these situations are discussed.