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191.
D. P. Kennedy 《Mathematical Finance》1997,7(2):107-118
Models of the term structure of interest rates are considered for which, under the martingale measure, instantaneous forward rates are Gaussian. The possible forms of the covariance structure are characterized under appropriate formulations of the Markov property. It is demonstrated that imposing Markovian assumptions limits severely the covariances that may be obtained and that the strongest such formulation together with stationarity implies that the whole forward rate surface is necessarily a Gaussian random field described by just three parameters. 相似文献
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Given a goal of farm price stabilization, the likely effect of a deficiency payment scheme on U.S. hog prices and production is examined for the period 1957 through 1971. A graphic model of supply and demand adjustment is first presented, and empirical results arc then reported. The model output refers to average price to packer and farmer, price variance, changes in farm income, and income variance. The analysis suggests that a deficiency payment scheme would have been modestly successful in achieving likely policy goals. Ay ant pour but la stabilisation des prix agricales, eel article étudie, pour la période de 1957 a 1971, ? effet probable ? un système de versements ? appoint sar le prix et la production des pores attx Etats-Unis. On y présente un graphique sur ? ajustement de ? offre et de la demande suive ? 'un rapport des résultats empiriques. Le graphique indique le prix moyen x ? abatteur et à? agricultettr, la variationdes prix, les changements dans les revenus agricoles et la variation des revenus. ? analyse indique qu'uti système de versements ? appoint aurait oblenu un certain succès en atteignant les bins proposés. 相似文献
194.
Hare ML Orians CE Kennedy MG Goodman KJ Wijesinha S Seals BF 《Social marketing quarterly》2000,6(1):54-65
This summary report presents the lessons learned during the two-part qualitative case study on the efficacy of the Prevention Marketing Initiative (PMI) in its implementation of an HIV prevention program. About 179 community participants were included in the PMI program, which discussed topics ranging from organizing initial planning committees to financially sustaining federal demonstration programs. One of the successes observed was the development of rapport with schools and churches; however, during the course of its implementation, the program realized the necessity of 1) approaching the program as an ongoing process; 2) going beyond studying the target population through formative research; 3) changing the role of a community coalition as the project matures; 4) reexamining the composition of coalition in the light of the target audience; 5) advocating the project as a community resource that promotes collaboration; 6) attending the needs of coalition members; and 7) using the media in the campaign. Likewise, several lessons were also learned in the areas of youth involvement, intervention development, program implementation, and maintenance of PMI activities. 相似文献
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This paper explores the relationship between interstate air pollution and the division of power between federal and state agencies in setting and enforcing standards. In the context of the US Clean Air Act we argue that the EPA is able to monitor the adoption of technology-based standards more closely than it can monitor state-level enforcement, and that this causes an effective division of control between federal and state agencies. Our analysis offers three main insights into the interstate pollution problem in this setting. First, states have an incentive to enforce standards less stringently on firms located close to downwind borders, and this leads to excessive interstate pollution in equilibrium. Second, there can arise an inherent substitutability in the regulatory problem between strict standards and compliance effort, and this creates a strategic linkage between the federal policy on standards and state policies on enforcement. In particular, a tighter federal standard can induce less selective enforcement but can also lead to less enforcement overall. Third, states will attempt to neutralize the impact of location-based federal standards (that specifically target interstate pollution) in a way that actually exacerbates the underlying enforcement problem. 相似文献
198.
This study tests and extends the discovery that competing brand user profiles are broadly similar, specifically investigating the consistency of this pattern over time. Examining 700 brands in more than 60 consumer packaged goods categories, for more than 160 variables, the authors document not only that brand user profiles seldom differ but also that they seldom change much over 3 to 6 years. These findings have important implications for marketing theory and practice. For example, marketers need to focus mostly on who buys the category and what features they demand as opposed to thinking their brand buyers are very different to those of competitive brands. This paper extends the empirical results of prior brand profile findings, demonstrating their robustness and durability. 相似文献
199.
This study introduces film personas (e.g., Hermione Granger, Jack Sparrow, Bridget Jones) as effective brand endorsers. A three study, mixed‐method approach is used. Results show that a film persona (e.g., Legolas, from Lord of The Rings, vs. celebrity, Orlando Bloom) is a more (less) effective endorser (i.e., resulting in more positive attitudinal and behavioral judgments). Exploratory findings indicate that this may be due to film personas possessing a tight (vast) association set, which is more (less) easily transferred onto the endorsed brand. Results of this study also illustrate that endorsed brands are shielded from the negative effects of celebrity transgressions when they are featured as their film persona in an endorsement. This study has important implications for advertisers in the choice and execution of their advertisements featuring celebrities. 相似文献
200.
The battle to extend the Bush-era tax cuts was politically divisive, and the process agonizingly prolonged. Yet the decision to continue the cuts—and throw in a few others—is already producing 相似文献