Integration erneuerbarer Energien in die deutsche Stromversorgung im Zeitraum 2015�C2020 mit Ausblick auf 2025

The dena grid study II examines the integration of renewable energies into Germany??s electricity supply up to the year 2020 and gives a qualified outlook up to 2025. The study develops geographically differentiated scenarios for installed wind power capacity, on the basis of which time series of the wind power feed-in into high and extra high voltage nodes and offshore wind farms are generated. Future requirements for the transmission grid and grid extension options are analysed. Opportunities to introduce more flexibility in the power system in terms of supply and demand are examined. The study gives a conceptual perspective of the need for grid extension in inner Germany in order to fully integrate renewable energies, whilst operating power stations at optimum cost and exchanging electricity with other countries in response to market demands within the scope of the specified transmission capacities.     

Medientransformationen und Entwicklungsprozesse in Mittel- und Osteuropa

15 years after the beginning of the epochal changes in Central and Eastern Europe, it seems increasingly disputable to speak about »Eastern European media« and to regard them as a whole. In analogy to the general transformation, every country has its own typical transformation path, also with respect to the media, creating a broad variety of such paths in the region. Therefore, analyses of the media in this region not only require to assume a differentiated perspective, but it appears also to be important to identify relevant factors that flank and shape the general transformation, and to complement the media analyses by these external parameters. This approach led to the development of a multi-dimensional methodological instrument for media analyses in post-communist countries. It is suitable for mapping three dimensions of media transformation: first, the different transformational stages that document transformational progress; second, the specific historical and cultural as well as political and socio-economical conditions; and third, the diverse levels of the transformational process and the development in the media.     

The existence and persistence of the pay-per-use bias in car sharing services

A key benefit of using car sharing services (relative to car ownership) is that they are more cost effective. Car sharing firms offer a menu of pricing plans to make this happen. The two most common plans are flat-rate and pay-per-use pricing. However, little is known about how consumers choose among these pricing plans. In this study, we analyze consumers' choices between pay-per-use and flat-rate pricing using data from a car sharing provider in a large European city. In contrast to previous research, we find a prevalent and time-persistent pay-per-use bias. Specifically, depending on the definition of the bias, 21% to 32% of customers exhibit this bias. This bias also persists over time within customer. We propose three potential explanations for the existence and persistence of this bias. First, we suggest that customers underestimate their usage. Second, we propose that customers have a preference for flexibility, leading them to pay more. Finally, we show that the physical context, such as weather, increases the likelihood of a pay-per-use bias. Our findings suggest that more research into consumer response to pricing in the Sharing Economy is needed.     

What drives competitive webrooming? The roles of channel and retailer aspects

ABSTRACT

Competitive webrooming, the phenomenon in which consumers gather product information online but ultimately purchase the product in an offline store of a competing retailer, has gained traction and become a major threat for retailers. To gain a deeper understanding of its drivers, we surveyed 1081 retail customers about their most recent consumer electronic product purchase to examine the impact of channel-related aspects as well as retailer-related aspects – a dual approach that has not been applied previously. A channel’s anticipated after-sales service and price level are the strongest predictors for webrooming. Moreover, retailer aspects determine whether customers simultaneously switch retailer when webrooming. A retailer’s assurance of delivery, including payment modalities, return policies, and product obtainment, as well as competitive product prices motivate consumers to switch retailer when webrooming. These results suggest that customers have a fundamental need for certainty within and after the buying process, which can be satisfied by both channel and retailer. Additionally, this is the first study to empirically test for interactions between channel and retailer aspects, as they are likely to occur in real shopping situations. We identified two interactions: First, a retailer’s assurance of delivery can compensate for an anticipated lack of a channel’s after-sales service, dampening the impact of the latter on competitive webrooming. Second, retailer’s price attractiveness acts in a similar vein. Hence, to steer customers into channels and/or keep them with the company, retailers should emphasize their price attractiveness as well as assurance of delivery.     

Das Bild der Public Relations in der Qualit?tspresse

In their survey study about the image of PR in Germany, Bentele and Seidenglanz (Das Image der Image-Macher. Eine repr?sentative Studie zum Image der PR-Branche und eine Journalistenbefragung. Leipzig: Universit?t Leipzig, 2004) presume an interrelation between media coverage on PR and the general public??s conception of PR. Their results show firstly: The higher the respondents?? media consumption the more negative was their perception of PR. And secondly: The journalists among their respondents had a much more negative image of PR than the general public. Thus, our study investigates the question of how German media cover PR. We conducted a longitudinal content analysis (1993?C2006) of quality newspapers??the first study of this kind in Germany. We compared our findings from the content analysis with what we call a ??contrasting foil,?? which represents a re-construction of the ??reality?? of PR consisting of empirical data and facts about PR and the profession??s official self-image as well as of science-based theoretical reflections of PR. This ??contrasting foil?? served as a reference to clarify the journalistic positions on PR found in media coverage and to outline differences between the media??s picture of PR and the reality of PR beyond the media. Our results show that the scandalisation of PR plays an important role in the media coverage on PR.     

Sustainability Labels: Are Price Premia Relevant in Online Food Retailing?

Consumers are willing to pay a higher price for products certified as sustainable. By implication, such certification is in the interest of producers, too. A general claim that sustainability characteristics automatically imply a price margin may not, however, be justified. Rather, several price premia might be necessary. This analysis based on 882 product prices of the German online retail, is concerned with the price premia attached to various labels and products. It estimates individual price premia for products, like coffee, tea, sweets, spices, etc., showing that sustainable food labeling is not always an indicator for a price markup. In fact, for some products (e.g. spices, chocolate) and labels (e.g. UTZ) a negative price effect is even estimated. Such markdowns may be due to a differing emphasis on sustainability issues along the supply chain for some products or the label’s certification policies.     

Optimal Taxation: The Design of Child‐Related Cash and In‐Kind Benefits

Abstract. In this paper, we empirically derive the welfare function that guarantees that the current German tax and transfer system for single women is optimal. In particular, we compare the welfare function conditional on the presence and age of children and assess how recent reforms of in‐kind childcare transfers affect the welfare function. Our analysis is based on a discrete model of optimal taxation. We apply this framework using microsimulation and microeconometric techniques. In general, we find that marginal welfare weights are relatively high for non‐working single women. Further, we show that the reform of in‐kind childcare transfers is only optimal if society increases the marginal welfare weights for the working single women.     

TTIP – Probleme und Chancen

The Transatlantic Trade and Investment Partnership is the most important trade policy decision that European leaders have faced in many years. The new generation of free trade agreements, including TTIP, aim at deep economic integration. Thus, they are essentially focused upon the removal or alignment of standards, regulations and administrative procedures that impede international trade and investment. Therefore, TTIP goes beyond the dimensions of traditional preferential trade agreements in the sense that it not only concerns tariffs and non tariff barriers to trade in goods, but it also concerns trade in services and the foreign investment environment. Regulatory cooperation under TTIP might thus well extend into core domains of public policy, including health and food safety or environmental regulation. Regulation, however, confers both benefits and costs to society. A proper assessment of TTIP must therefore also consider the benefits of regulation to society and must embed regulatory cooperation between the EU and US into a firm democratic framework. The potential of such an agreement is substantial, due to improved market access, regulatory cooperation and greater global reach, while the downside risk is limited. While some of the arguments critical of TTIP are justified, others seem rather excessive and seem intent on stirring up unnecessary anxiety among the population. An objective and constructive discussion is crucial to ensure that the needs of the population are heard during the negotiation process and that an agreement capable of achieving majority support can be concluded. The debate over TTIP has to consider not only the economic effects of increased trade but also the legal and political dimensions of the trade agreement.     

Carrotmob as a New Form of Ethical Consumption. The Nature of the Concept and Avenues for Future Research

A new form of ethical consumption has recently evolved: The carrotmob. As in a flashmob, consumers collectively swarm a specific store and purchase its goods in order to reward corporate socially responsible behaviour. The present paper introduces a conceptionalization of carrotmobs that takes into account the perspective of the three relevant parties: activists, companies, and consumers. First, the paper considers activists?? objectives in initiating such a social movement. It describes how they use guerrilla tactics to foster the participation of companies and consumers. Second, the paper considers the perspective of the target company, stressing the role of corporate social responsibility and describing how companies compete in an auction to become the carrotmob target. Third, the paper highlights the consumer perspective, discussing different views on consumer power and the motivation to participate in a carrotmob. The paper also points out directions for further empirical research for each of these three perspectives.