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Wie kann der erhöhte Anteil durch Photovoltaik und Windkraft fluktuierend erzeugter Energie im Stromnetz ausgeglichen werden? Biogas- und Biomethananlagen sind interessante technologische Lösungen zur Stabilisierung des Stromnetzes. Die Umsetzung der Biomasse zu Methan erfolgt aber aufgrund von Wasserstoffmangel im Biogasreaktor nicht vollständig. Daher werden derzeit verschiedene Ansätze verfolgt, die verwertbare Gasausbeute zu erhöhen. In der vorliegenden Arbeit wird untersucht, welche Möglichkeiten zur Erhöhung der Methanausbeute von Biogasanlagen bestehen und wie sich diese ökologisch und wirtschaftlich darstellen. Zunächst werden der aktuellen Forschungs- und Entwicklungsstand zur Erhöhung der Methanausbeute in Biogasanlagen dargestellt und die verschiedenen Prozesse der Wasserstoffherstellung und Methanisierung beschrieben. In einem Vergleich werden die vorteilhaftesten Verfahren dargestellt. Diese bilden die Grundlage für die ökologischen und ökonomischen Betrachtungen zu vier ausgewählten Szenarien. Für das wirtschaftlich vorteilhafteste Szenario wird das CO2-Minderungspotential auf den gesamtdeutschen Markt skaliert. Abschließend werden der weitere Forschungs- und Entwicklungsbedarf in dem Themengebiet ermittelt, sowie politische Rahmenbedingungen und deren Auswirkungen auf die Biogastechnologie kritisch beleuchtet.
Business process management and IT supported processes are an actual topic. The procedure of finding a business process system that implements your processes the best way is not easy and takes a lot of time. In this article you will find a recommendation for an open source system. Four selected open source workflow management systems are tested and analyzed. Mean criteria for the evaluation are listed in a criteria catalogue and rated by experts by their importance. Finally, the systems are evaluated by the criteria and the best evaluated system can be recommended.
Wasted paradise – imagining the Maldives without the garbage island of Thilafushi : Version 1.2
(2016)
To address the high level of waste production in the Maldives, the local government decided to transform the coral island of Thilafushi into an immense waste dumb in 1992. Meanwhile, each day, 330 tons of waste is ferried to Thilafushi. The policy had the positive consequence of relieving the garbage burden in Malé, the main island, and surrounding tourist atolls. However, it can also lead to serious environmental and economic damage in the long range. First, the garbage is in visual range of one of the most prominent tourist destinations. Second, if the wind blows a certain way, unfiltered fumes from burning waste travels to tourist atolls. Third, water quality can erode as hazardous waste from batteries and other toxic waste is floating in the ocean. Over time, these effects can accumulate to significantly hamper the number of tourists that travel to the Maldives – one of the state’s main sources of financial income. In our paper, we lay out the situation in more detail and translate it into a simulation model. We test different policies to propose the Maldives government how to better solve the waste problem.
Organisationen sind immer mehr gefragt, auch digitale Arbeitsumgebungen bewusst zu formen. Neue Technologien und digitale Arbeitspraktiken verlagern den Ort, an dem eine gemeinsame Identität gebildet wird, zunehmend in virtuelle Räume. Bislang fokussieren sich Führungskräfte und Change Manager jedoch zu sehr auf Dinge, die sie anfassen und plastisch gestalten können. Die Autoren erörtern daher, wie Unternehmen auch in virtuellen Arbeitswelten die organisationale Identität gestalten und aufrechterhalten können, um auf diese Weise das Change Management zu unterstützen.
Marketing-Events emotionalisieren das Publikum auf besondere Art und Weise. Einstellungsänderungen bzw. Imageverbesserungen stellen deshalb die zentralen Zielsetzungen des Event-Marketing dar. Aufbauend auf den wesentlichen Grundlagen des Event-Marketing fokussiert dieses Kapitel auf das Controlling im Event-Marketing. Eingegangen wird auf die Erfolgskontrolle und die Wirkungsforschung im Event-Marketing. Es werden die Bedingungen für das Zustandekommen eines Imagetransfers von einem Event auf eine Marke bzw. ein Unternehmen erläutert und Verfahren zur Imagemessung vorgestellt.
During the first years of their employment, the graduates are a liability to industry. The employer goes an extra mile to bridge the gap between university-exiting and profitable employment of engineering graduates. Unfortunately some cannot take this risk. Given this scenario, this paper presents a learning factory approach as a platform for the application of knowledge so as to develop the required engineering competences in South African engineering graduates before they enter the labour market. It spells out the components of a Stellenbosch University Learning Factory geared towards production of engineering graduates with the required industrial skills. It elaborates on the didactics embedded in the learning factory environment, tailor-made to produce engineers who can productively contribute to the growth of the industry upon exiting the university.
In a recent publication Novy-Marx (2013) finds evidence that the variable gross profitability has a strong statistical influence on the common variation of stock returns. He also points out that there is common variation in stock returns related to firm profitability that is not captured by the three-factor model of Fama and French (1993). Thus, this thesis augments the three-factor model by the factor gross profitability and examines whether a profitability-based four-factor model is able to better explain monthly portfolio excess returns on the German stock market compared to the three-factor model of Fama and French (1993) and the Capital Asset Pricing Model (CAPM). Based on monthly stock returns of the CDAX over the period July 2008 to June 2014 this thesis documents four main findings. First, a significant positive market risk premium and a significant positive value premium can be identified. No evidence is found for a size or a profitability effect. Second, all included factors have a strong significant effect on monthly portfolio excess returns. Third, the four-factor model clearly outperforms both the three-factor model of Fama and French (1993) and the CAPM in capturing the common variation in monthly portfolio excess returns. The CAPM performs worst. Finally, the results indicate that the three-factor model of Fama and French (1993) is somewhat better in explaining the cross-section of portfolio excess returns than the four-factor model. Again, the CAPM performs worst. Nevertheless, the four-factor model is considered to be an improvement over the three-factor model of Fama and French (1993) and the CAPM in determining stock returns on the German stock market.
Systemic Constellation describes an approach that enables practitioners to examine and address typical issues in diversity management from a different, relational perspective. Systemic Constellation utilizes the human ability to recognize the qualities of relationships between two or more people from their spatial alignment to each other (transverbal language) and the capability to illustrate inner pictures by placing humans or objects in a room as representatives (representative perception). Systemic Constellation originated in the field of family therapy and counseling, but through research, guidance work, and teaching activities over the last two decades, it has developed into a generic, structural, constellation logic with multiple methods of application. It has been adapted to a variety of topics and issues, and a number of constellation formats. This article serves as a starting point for the transfer of Systemic Constellation into diversity management. It appears that conventional approaches taught in traditional management classes (such as focusing on tools, setting targets, planning measures, and offering incentives) are of limited use when trying to deal with problematic situations in diversity management. Preliminary trials show that new solutions and insights into deeper underlying dynamics can be gained on personal and institutional levels when applying Systemic Constellation. Participants find the application of the model as very beneficial. Systemic Constellation is grounded in personal experience and particularly in a person’s own experience of the consistency of representative perception. This viewpoint can only be conveyed rudimentarily in a scientific article. Readers should feel encouraged to apply Systemic Constellations themselves and use it in their work, experimentally and professionally. To harness the full potential of Systemic Constellations in diversity management, further research needs to be done.
Sport marketing is the specific application of marketing principles and processes to sports products and services. In 2014 the biggest sports event in the world, the FIFA World Cup, took place in Brazil. Billions of spectators around the world saw Germany win the trophy in Rio de Janeiro for the fourth time in history. Yet unlike in previous World Cups, conversation was not only taking place at the numerous public viewings which were held in open spaces like bars and restaurants. For the entire tournament social media like Facebook or Twitter were playing a dominant role in all aspects. With 672 million tweets on Twitter and three billion conversations on Facebook, this was the most social World Cup as well as the most social mega sports event so far. It did not matter whether it were users, athletes or companies, everyone was trying to catch up on the conversation to be informed or inform others about their opinion or latest news. This paper analyzes the implementation of social media marketing during mega sports events with a focus on Adidas’ and Nike’s social media campaigns in the frame of the FIFA World Cup 2014 in Brazil. The analysis shows that social media marketing in the frame of mega sports events gains importance. Those companies finding topics that affect people personally with a relationship to their products achieve success through social media marketing.