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Design of Photovoltaic Microinverter for Off-Grid and Grid-Parallel Applications
(VDE Verlag, 2014)
The design and construction of a 500VA microinverter for photovoltaic applications is presented. The developed microinverter is capable of operating as a standalone AC voltage source for small loads or, alternatively, as a grid-parallel system. Possible applications are therefore small off-grid installations as well as installations where space constraints do not allow enough modules to be combined to use string inverters. The design of the microinverter is based on a two stage concept. Two alternative topologies for ...
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Weight reduction of DC/DC converters using controllable inductors
(VDE Verlag, 2019-07)
Controllable inductors can be realized by introducing auxiliary windings into the device that partially saturate the core and allow variation of the inductance value. This can be used to achieve zero-voltage switching in a DC/DC converter over a wide load range while at the same time the weight of the inductor is reduced. In this paper the possible size and weight reduction and the influence on the efficiency is calculated and compared to other solutions. The results are verified in a prototype.
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Linking entrepreneurial orientation to firm performance in a post-socialist market context: the case of Hungary
(National University of Political Studies and Public Administration (SNSPA), Faculty of ManagementTritonic, 2016)
Entrepreneurial orientation provoked the interest of numerous scholars as well as political and administrative decision-makers. Both start-ups and already established corporate entities are increasingly persecuting new opportunities, products, and business models in order to establish superiority above their competitive environment. The tendencies evince an optimist impact of entrepreneurial orientation on business performance, namely on financial performance. Beyond the aforementioned relationship, there are impulses ...
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Concept for selecting and integrating traceability systems in the continuous improvement process of SMEs
(2019)
Industry 4.0 is characterized by digitization, globalized markets and a growing demand for individualized products. Therefore, the success of manufacturing companies heavily relies on innovative and customer driven products. However, the industrializing phase of such products is often characterized by the occurring of errors originating in a lack of experience. If errors are not detected prior to delivery, costs will increase considerably (e.g. expensive product recalls). Traceability systems can clearly identify the ...
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The lexicalization of complex constructions: an analysis of adjective-noun combinations
(Pasithee : Open Access Electronic Publications; Library & Information Center - University of Patras, 2016)
The current paper discusses the lexicalization of complex constructions composed of an adjective and a noun. It is argued that compounds/compound-like constructions are more prone to become lexicalized than phrases/phrase-like constructions. The relationship between lexicalization and the cognitive process of memorization represents a key point of our analysis. We report evidence from psycholinguistic studies contrasting compounds/compound-like constructions to phrases/phrase-like constructions either within a single ...
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Post-crises response strategies: a combined model to manage brand crises
(National University of Political Studies and Public Administration (SNSPA), Faculty of ManagementTritonic, 2017)
Brand crises negatively affect customers’ perception of the brand’s ability to deliver expected functional or symbolic benefits. Post-crisis response strategies should be implemented to restore brand trust and diminish the effect of reputational threat, since these strategies act as critical determinants of the actual impact of the crisis on consumers’ evaluations and consequently on repurchase intentions. A categorization of the nature of the crisis, distinguishing between ‘performance-related’ and ‘values-related’ ...
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A Conversational Agent to Improve Response Quality in Course Evaluations
(Association for Computing Machinery, 2020)
Recent advances in Natural Language Processing (NLP) bear the opportunity to design new forms of human-computer interaction with conversational interfaces. We hypothesize that these interfaces can interactively engage students to increase response quality of course evaluations in education compared to the common standard of web surveys. Past research indicates that web surveys come with disadvantages, such as poor response quality caused by inattention, survey fatigue or satisficing behavior. To test if conversational ...
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How digitalization changes the internationalization of entrepreneurial firms: theoretical considerations and empirical evidence
(National University of Political Studies and Public Administration (SNSPA), Faculty of ManagementTritonic, 2017)
The internationalization of firms is predominantly analyzed and explained considering observations from a pre-digital business environment. Thus, the applicability to digital ways of doing business needs to be challenged. Recent literature on the internationalization of digital firms attempts to adapt existing international business literature to the digital market. However, these studies consider internet-based companies predominantly as a homogeneous group. It is a popular opinion, that digital internationalization ...
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Verbesserung der Produktqualität durch eine frühe Anforderungsvalidierung mithilfe der virtuellen Realität
(Otto-von-Guericke-Universität, Fakultät für Maschinenbau, 2015)
If features meet customer requirements to 100%, one speaks about quality. In the context of the requirement identification various methods are used to generate the conscious customer requirements. Hidden (unconscious) customer requirements are not taken into account. From collected customer requirements, however, the later features can be derived. Therefore, in the developed product it often comes to a deviation from the characteristics required by the customer. Any deviation results in a lower product quality. The ...