Operating Strategies for Battery Storage Systems in Low-Voltage Grids to Limit the Feed-In Power of Solar Power Systems Using Fuzzy Control

Germany’s energy turnaround is leading to an increasing integration of photovoltaics (PVs) throughout its distribution grid. To ensure safe grid operation in times of high solar radiation, PV plants must either be throttled back to comply with the feed-in limitation or store a portion of their excess electricity in batteries. This paper presents a grid-optimized operating strategy for PV storage systems based on a Fuzzy Logic Controller that reduces peak feed-in and thus also PV curtailment losses. The Fuzzy Logic Controller uses data on PV power surplus and battery charge level as input variables. To obtain good results, the set of numerical parameters of the membership functions is enhanced by evolutionary programming.The energetic assessment shows that even small electrical storage capacities (<<5?kWh) reduce curtailment losses considerably when using the grid-optimized operating strategy. The economic assessment shows that, in 2016, investments in PV storage systems with large PV plants and small batteries have small (positive) Internal Rates of Return. The system efficiency of the battery storage has a small impact on the profitability of PV storage systems, whereas the cycle stability and the electricity purchase price have a large impact. Moreover, there is an economic benefit for plant operators to switch from the simple to the grid-optimized operating strategy. Solar forecast inaccuracies and variations in load and generation profiles have a negligible impact on the performance of the control algorithm.     

Energiewende: Alles eine Frage der Partizipation? Governance-Herausforderungen zwischen Zentralität und Dezentralität

The interaction of centralised and decentralised elements is not only a challenge for the technical und functional implementation of the energy transition, but also for the political and social assignment of developing adequate governance strategies for future energy systems. While “participation” is of capital importance for all governance approaches mediating centralising and decentralising trends, it is far from clear, how participation is to be realized in order to promote energy transition and avoiding pitfalls and flaws of participative decision making processes. Against the backdrop of a multi-dimensional understanding of “participation” comprising procedural, factual, legitimatory and meta-reflective functions, the paper considers the tense relations of participation and efficiency, legitimacy and professionalized expertise, thereby identifying structural challenges for participation in democratic societies. Finally, some suggestions are made, how the governance of the energy transition can be shaped in the future.     

Evaluation of subsidiary marketing performance: combining process and outcome performance metrics

Issues in evaluating marketing performance and devising appropriate metrics for measurement have taken center stage in marketing thought and practice in recent years. We propose an empirical model that enables a multinational enterprise (MNE) to assess the marketing performance of its subsidiaries, taking into explicit consideration the fact that tactical actions by subsidiaries contribute to the creation of assets that can be harnessed for marketing outcomes. Thus, our model captures the asset creation abilities of marketing expenditures and also takes in to account the environmental differences of the context in which each MNE subsidiary operates. We evaluate comparative, overall, and process-level (creation of market assets and market yield) marketing performance in the context of multi-country operations. This simultaneous examination of marketing process and marketing outcome performance enables a global corporation to gain strategic, operational, and diagnostic insights into the performance of its subsidiaries. Our approach is empirically illustrated with an evaluation of the marketing performance of subsidiaries of a large global corporation.     

Peter Drucker on marketing: an exploration of five tenets

The authors review Peter Drucker’s contributions to marketing theory and practice. A bibliometric analysis of Drucker’s academic influence in marketing is presented. The five main tenets that are derived from the bibliometric study are expanded upon as follows: (1) The Marketing Concept: Creating Value for Customers; (2) Broadened Role of Marketing in Society: Corporate Social Responsibility, Consumerism, Social Marketing, and Lessons from Non-Profit Organizations; (3) Contributions to Marketing Strategy: The Obvious and Not So Obvious; (4) Marketing-Innovation Interface: New Product Development; (5) Future of Globalization: Rise of Non-National Enterprises.

The evolving brand logic: a service-dominant logic perspective

The meanings of brand and branding have been evolving over the past several decades. This evolution is converging on a new conceptual logic, which views brand in terms of collaborative, value co-creation activities of firms and all of their stakeholders and brand value in terms of the stakeholders’ collectively perceived value-in-use. The authors argue that this new logic parallels and reflects the related, evolving service-dominant (S-D) logic in marketing. They provide an historical account of the branding literature, organize it into eras, and connect it to the evolution in marketing as captured by S-D logic. The analysis provides further support for the S-D logic of marketing and suggests a related research agenda for furthering the understanding of brand and branding. It also suggests that marketing managers might benefit from investing resources in building strong brand relationships with all of their stakeholders and a service-dominant firm philosophy built around brand value co-creation.     

Antecedents and consequences of environmental stewardship in boundary-spanning B2B teams

The authors examine antecedents and consequences of environmental stewardship in frontline business-to-business teams. On the basis of data from members of 34 teams organized into regional networks, they demonstrate the differential impact of team environmental stewardship on customer satisfaction ratings and sales. Furthermore, the results reveal lagged individual-level effects of autonomy and supervisory support on environmental stewardship, as well as lagged group-level effects of past performance. Finally, dispersion models of team stewardship differentially moderate antecedent–stewardship relationships. Whereas within-team consensus strengthens the impact of past satisfaction ratings on subsequent stewardship, between-team consensus weakens the negative impact of past sales.     

Gratitude works: its impact and the mediating role of affective commitment in driving positive outcomes

After studying the effects of Louisiana’s post-hurricane “thank you” campaigns, the researchers find expressions of gratitude significantly improve perceptions of Louisiana in the midst of its recovery. Through a national survey conducted November 2006, they find that those who saw or heard a thank you advertisement have more positive attitudes toward the state and its people, a greater willingness to pay a premium for its products, services and travel to the state, and spread positive word-of-mouth, thus justifying the use of public funds to support the campaign. The authors investigate the role of participation on the effectiveness of expressions of gratitude and identify the mediating role of affective commitment in driving the positive results attributed to expressions of gratitude.     

An examination of Peter Drucker's work from an institutional perspective: How institutional innovation creates value leadership

This paper uses an institutional perspective to analyze Peter Drucker's contributions to management, marketing and marketing strategy. Drucker recognizes the importance of institutions in society. Further, his work reflects a variety of institutional views from sociology, economics and marketing. Drucker uses a form of comparative institutional analysis for evaluating both management and strategy issues. At the heart of each institutional comparison is the customer and the value created for the customer by the organization. Institutional comparisons help managers understand how the organization can create customers by adjusting its customer value proposition. Drucker influences marketers by focusing on how the organization's values are used to develop the organization's customer value proposition. Further, it is shown that the organization's values and its customer value propositions are manifested in its transaction rules, termed marketing institutions. Based on Drucker's work, a framework for comparing marketing institutions is introduced: the value leadership framework.