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201.
Johannes Vitalis Siven Jeffrey Todd Lins Anna Szymkowiak-Have 《Finance Research Letters》2009,6(2):95-105
The Value-at-Risk of a delta–gamma approximated derivatives portfolio can be computed by numerical integration of the characteristic function. However, while the choice of parameters in any numerical integration scheme is paramount, in practice it often relies on ad hoc procedures of trial and error. For normal and multivariate t-distributed risk factors, we show how to calculate the necessary parameters for one particular integration scheme as a function of the data (the distribution of risk factors, and delta and gamma) in order to satisfy a given error tolerance. This allows for implementation in a fully automated risk management system. We also demonstrate in simulations that the method is significantly faster than the Monte Carlo method, for a given error tolerance. 相似文献
202.
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204.
How should firms react to customer complaints after an unsatisfactory purchase? In a field experiment, we test the effect of different reactions and find that a cheap-talk apology yields significantly better outcomes for the firm than offering a monetary compensation. 相似文献
205.
Johannes Hattula 《Marketing Review St. Gallen》2010,27(4):4-7
Spitzenleistungen im Marketing gelingen dann am besten, wenn Unternehmen nicht nur strategisch gut aufgestellt sind, sondern
auch taktisch agieren und schnell auf Ideen reagieren k?nnen. Entscheidend ist auch die konsequente Ausrichtung an den Kundenbedürfnissen. Dem Technologieführer für H?rger?te Phonak ist
es gelungen, seine Leadership in einen klaren und wahrnehmbaren Kundennutzen zu verwandeln. Alexander Zschokke, Vice President
Marketing in der Sonova Gruppe, beschreibt, was Phonak im Marketing besser macht als andere. 相似文献
206.
Johannes Leitner 《Quantitative Finance》2013,13(1):93-102
We propose a new valuation principle for possibly non-traded assets based on an implicit definition of a benchmark. The valuation principle allows taking (default and shortfall) risk constraints explicitly into account. The resulting risk-adjusted value functional is monotonic, positively homogeneous, partially concave and allows for an additive allocation of risk-adjusted values of non-traded assets in a portfolio. The valuation principle is applied to the problem of hedging and pricing in incomplete markets. Furthermore, accounting for non-traded assets is considered and we derive a risk-adjusted balance sheet for non-deterministic cash streams. 相似文献
207.
Johannes M. H. Dick Katrin Hussinger Boris Blumberg John Hagedoorn 《Small Business Economics》2013,40(4):911-931
A common phenomenon in entrepreneurship is that employees turn away from employment to found their own businesses. Prior literature discusses the former employers’ characteristics that influence the creation of entrepreneurial ventures. An investigation of whether these characteristics also affect the success of the spawned ventures is missing so far. This paper contributes to the literature by showing that entrepreneurial ventures spawned by well performing firms are financially more successful than ventures stemming from poorly performing firms. This suggests that spawned entrepreneurs are able to exploit valuable knowledge from their previous employers which impacts their ventures’ performance positively. The analysis is based on a linked employee–employer data set for the Netherlands for the period 1999–2004. 相似文献
208.
Johannes Wiik Branko Kopjar Marija Bulajic-Kopjar 《International journal of injury control and safety promotion》2013,20(2):67-77
Abstract PROBLEM Numerous activities to promote bicycle safety have been implemented in Norway. The overall effect of these activities has not been evaluated. method Information about cases of bicycle-related injuries occurring in 1990-1993 was obtained from prospective registration of all injuries treated by hospitals and emergency clinics in four urban centers in NORWAY. Incidence was calculated per number of cyclists, based on data obtained from the 1992 National Bicycle Survey. Temporal changes in injury severity and in age-specific incidence (per bicycle riders) of all injuries, upper-head injuries, other injuries, injuries due to bicycle-motor vehicle collision, and injuries leading to inpatient treatment were analyzed by logistic regression analysis. RESULTS 3,893 injuries occurred in the study population in 1990-1993. The average annual incidence was 33.1 per 10,000 population aged 4 years and higher, or 47.9 per 10,000 bicyclists. No significant secular trends were found for any of the analyzed parameters. CONCLUSIONS Bicycle safety promotion measures implemented during 1990-1993 did not significantly reduce the risk of bicycle-related injury in Norway. Effective bicycle safety programs should be implemented, based on the positive experiences from other countries. Injury surveillance systems appear to be a useful tool for evaluating injury prevention programs. 相似文献
209.
May-May Meijer Frank G.A. de Bakker Johannes H. Smit Theo Schuyt 《International Journal of Nonprofit & Voluntary Sector Marketing》2006,11(1):13-28
- Corporate giving as an expression of corporate social responsibility (CSR) has been researched less than the more general theme of CSR. In addition, much of the research in this area focuses on countries with an Anglo cultural tradition.
- The study outlined in this paper offers a comprehensive longitudinal study of corporate giving in the Netherlands. An overview is provided of corporate giving in the Netherlands in the period from 1995 till 2003.
- The data are gathered by means of a biennial survey of Dutch companies as part of the ‘Giving in the Netherlands’ project. Based on these findings, recent developments in corporate giving can be sketched out.
- Moreover, literature on motives for corporate giving behavior is focused upon and applied in exploring Dutch managers' motivations for offering donations. Nonprofit organizations could use this knowledge to increase the efficiency of their fund raising.
210.
Using random effects and mixed effects probit regression techniques, this empirical study investigates factors for technology adoption at the firm level. We account for problems of sequential technology implementation and behavior identification. Results underscore the importance of risks faced by the agents, the effects of network externalities and peer‐group learning, and the positive influence of previous firm‐specific innovation experiences. 相似文献