Wie kann wissenschaftliche Politikberatung zu besserer Politik beitragen?

Wissenschaftliche Beratung kann der Politik wichtige Hinweise zur effektiven Probleml?sung liefern und zur Legitimation institutioneller Reformen beitragen, die potenziell strittig sind. Welche Formen der Politikberatung gibt es in Deutschland? Inwieweit war die Politikberatung erfolgreich, wo liegen ihre Defizite und wie k?nnte sie effizienter gestaltet werden?     

New marketing channels for food quality products in Norway

Marketing is an important and challenging competitive instrument for small-scale quality food producers. Traditional commercial channels may be unprofitable and small-scale food producers often lack access to a highly concentrated retail sector. In this situation a number of strategic alliances between farmers and between farmers and other public and private actors have emerged. The aim of this paper is to discuss and compare initiatives to develop alternative marketing channels for small-scale specialty food producers. The three examples of emerging channels we investigate are (i) the 'new' farmers markets, (ii) retail initiatives where local producers deliver their produce directly to shops, and (iii) companies founded by large cooperatives to market specialty products. Recent research has justified that such initiatives can be conceptualized as hybrid governance structures, i.e. complex structures that entail properties of both market and hierarchy. We pay particular attention to the problem of quality enforcement in emerging marketing channels.     

玩转口碑营销

一旦消费者决定购买一项产品,他们会首先确定经过产品体验、推荐或打知名度的营销活动而筛选出的一组初选品牌。在消费者收集来自各种渠道的产品信息并决定购买何种产品的过程中,他们会对这些以及其他品牌进行积极评估。然后,他们的售后体验会为他们的下一次购买决策提供依据。尽管在这一过程的各个阶段,     

Does devaluation improve the current account?

This paper incorporates the link between devaluation, foreign interest payments, and the current account into a fairly general macroeconomic model in which exchange rate changes influence aggregate demand through exports, imports, and expenditure as well as aggregate supply via the cost of imported factors of production. On the basis of available statistical estimates of the behavioral and structural parameters of the model, an attempt is made to assess the empirical importance of this link, among others, in a group of highly indebted industrial and developing countries. By and large, the empirical results indicate that high foreign debt and interest payments tend to reduce the short- to medium-run effect of devaluation on national income, especially in the LDCs, but make little difference to its generally positive effect on the current account.     

Decomposing and Testing Long‐term Returns: an Application on Danish IPOs

An improved method for measuring and testing long‐run returns is proposed. The method adjusts for the right‐skewed distribution of long‐run buy‐and‐hold by decomposing average cross‐sectional buy‐and‐hold returns into mean components and volatility components. The method is applied to initial public offerings in Denmark. The mean‐component under performance of initial public offering stocks compared to the market is 30% and significant after 5 years. Compared to matching firms the under performance of IPO stocks is 13% after 5 years but insignificant.     

Identification and Use of Efficient Faces and Facets in DEA

This paper provides an outline of possible uses of complete information on the facial structure of a polyhedral empirical production possibility set obtained by DEA. It is argued that an identification of all facets can be used for a characterization of basic properties of the empirical production frontier. Focus is on the use of this type of information for (i) the specification of constraints on the virtual multipliers in a cone-ratio model, (ii) a characterization of the data generation process for the underlying observed data set, and (iii) the estimation of isoquants and relevant elasticities of substitution reflecting the curvature of the frontier. The relationship between the so-called FDEF approach and the cone-ratio model is explored in some detail. It is demonstrated that a decomposition of the facet generation process followed by the use of one of the available (exponential) convex hull algorithms allows for an explicit identification of the facial structure of the possibility set in fairly large DEA data sets. It is a main point to be made that the difficulties encountered for an identification of all facets in a DEA-possibility set can be circumvented in a number of empirical data sets and that this type of information can be used for a characterization of the structural properties of the frontier.     

Purchasing involvement in technologically uncertain new product development projects: Challenges and implications

This paper explores an emerging field of research within purchasing that concerns the changing role of purchasing when companies embark on technologically uncertain NPD projects. Where existing research has examined the role of purchasing in facilitating early supplier involvement in new product development, little research has been done to date on how purchasing's role might change when facing technologically uncertain NPD that require new capabilities and new technology. Based on an in-depth case study of a technologically uncertain NPD project in the passenger ship rescue equipment industry, the paper sheds light on how supplier involvement in NPD projects with a high degree of technological uncertainty impacts on a company's sourcing strategies and the challenges this poses for purchasing.Based on the case study findings, we propose a) that early purchasing involvement in technologically uncertain NPD projects requires a mature purchasing organization that possesses competences to interact effectively with R&D and b) that involving a new supplier from a different industry in NPD projects characterized by technological uncertainty requires a leap of faith from both innovating firm and supplier. The paper contributes to research in early supplier involvement in new product development, in particular the thin branch within this body of literature that now focuses on early purchasing involvement.     

THE MULTIVARIATE supOU STOCHASTIC VOLATILITY MODEL

Using positive semidefinite supOU (superposition of Ornstein–Uhlenbeck type) processes to describe the volatility, we introduce a multivariate stochastic volatility model for financial data which is capable of modeling long range dependence effects. The finiteness of moments and the second‐order structure of the volatility, the log‐ returns, as well as their “squares” are discussed in detail. Moreover, we give several examples in which long memory effects occur and study how the model as well as the simple Ornstein–Uhlenbeck type stochastic volatility model behave under linear transformations. In particular, the models are shown to be preserved under invertible linear transformations. Finally, we discuss how (sup)OU stochastic volatility models can be combined with a factor modeling approach.     

Flight to Quality in International Markets: Investors’ Demand for Financial Reporting Quality during Political Uncertainty Events

We examine whether international equity mutual fund managers shift their portfolios toward stocks with higher financial reporting quality (FRQ) during periods of high political uncertainty. Our study is motivated by two primary factors. First, prior research shows evidence of fund managers’ “flight to quality” (e.g., to less risky securities) during periods of uncertainty. Second, recent theoretical research concludes that stocks with higher FRQ are assessed as less sensitive to systematic risk (such as political uncertainty). We employ national elections as exogenous increases in systematic risk in the local markets and accordingly use an international sample of mutual funds that focus on local markets. We find that mutual fund managers shift their equity holdings to stocks with higher FRQ during election periods when political uncertainty is higher. Such a flight‐to‐quality effect is less pronounced for elections with larger expected electoral margins in the pre‐election period (i.e., when the incumbent is more likely to win the election) and for countries with higher transactions costs. In contrast, the effect is more pronounced when governments have greater involvement in the local economy. Our inferences are robust to alternative proxies for political uncertainty and FRQ and to numerous other sensitivity analyses.