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Suche nach „[2015]“ hat 276 Publikationen gefunden
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    NachhaltigS: TC Freyung

    Zeitschriftenartikel

    Luis Ramirez Camargo, Roland Zink, Wolfgang Dorner, G. Stoeglehner

    Spatio-temporal modeling of roof-top photovoltaic panels for improved technical potential assessment and electricity peak load offsetting at a municipal scale

    Computers, Environment and Urban Systems, vol. 52, no. July, pp. 58-69

    2015

    DOI: 10.1016/j.compenvurbsys.2015.03.002

    Abstract anzeigen

    Integrated spatial and energy planning has become a major field of interest to meet the current renewable energy share expansion and CO2 emissions reduction targets. Geographic Information Systems (GIS) play a considerable role in supporting decision making in this field. Solar potential maps are a popular strategy to promote renewable energy generation through photovoltaic (PV) panel installations at city and municipal scales. They indicate the areas of roofs that would provide the maximum amount of energy in kW h per year. These are often used to suggest “optimal locations” for PV-panels and/or recommend system sizes to achieve a certain level of yearly autarchy. This approach is acceptable if PVs have only a minor share in the local energy supply system. However, increased PV-penetration can lead to instability of the local grid, create hazards for the security of the supply, and considerably escalate the storage and system back-up requirements. To obtain a proper understanding of the consequences for the local energy balance when selecting or rejecting a certain installation, examining the hourly and intra-hourly time series of the potential energy generation from PVs is necessary. This paper introduces a GIS-based procedure to estimate the potential PV-electricity generation time series for every roof-top section within a study area using open source software. This procedure is complemented by a series of strategies to select suitable PV-installations considering the time series analysis of supply and demand. Furthermore, thirteen technical indicators are considered to evaluate the PV-installation sets selected with every strategy. The capabilities of the procedure are tested using data from a German rural municipality. The proposed procedure constitutes an efficient and accessible way to assess solar potentials at the municipal scale and to design roof-top PV exploitation plans, which are more appropriate to fulfill the local energy requirements.

    NachhaltigS: TC Freyung

    Vortrag

    Kristina Wanieck

    Zukunftstechnologie Bionik - Wie die Natur Vorbild sein kann für Produktentwicklung und Innovation

    Kolloquium der Fakultät Maschinenbau und Mechatronik, Deggendorf

    2015

    NachhaltigS: TC Freyung

    Vortrag

    Kristina Wanieck

    Zukunftstechnologie Bionik - Was wir von den Erfolgsstrategien der Natur lernen können

    Family Office Forum, Wiesbaden

    2015

    NachhaltigS: TC Freyung

    Vortrag

    Kristina Wanieck

    Bionics@work

    ACHEMA 2015 – Weltforum und 31. Internationale Leitmesse der Prozessindustrie, Frankfurt am Main

    2015

    GesundF: Angewandte Gesundheitswissenschaften

    Vortrag

    Horst Kunhardt

    Health IT & Mobile Health in Medical Tourism

    Medical Korea 2015 (The 6th Global Healthcare & Medical Tourism Conference), Seoul, Südkorea

    2015

    NachhaltigF: Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

    Zeitschriftenartikel

    S. Liu, S. Dai, C. Sang, J. Sun, Thomas Stirner, D. Wang

    Molecular dynamics simulation of the formation, growth and bursting of bubbles in tungsten exposed to high fluxes of low energy deuterium

    Journal of Nuclear Materials - PLASMA-SURFACE INTERACTIONS 21 — Proceedings of the 21st International Conference on Plasma-Surface Interactions in Controlled Fusion Devices Kanazawa, Japan, May 26-30, 2014, vol. 463, no. August, pp. 363-366

    2015

    DOI: 10.1016/j.jnucmat.2014.12.060

    Abstract anzeigen

    Molecular dynamics simulations are carried out to investigate the formation, growth and bursting of bubbles in tungsten exposed to the irradiation of an extremely high deuterium flux. It is found that the bubbles form in the region near the location of the implanted ion distribution peaks, and that the effect of the substrate temperature on the bubble formation depth is negligible; it is also found that the percentage of deuterium that is found in D2 molecules increases as the bubble grows, and that the evolution of the bubble’s internal pressure is strongly associated with the properties of its surrounding structure. The simulations display the development of a dome-shaped structure at the tungsten surface during the bubble growth. The merging of two deuterium bubbles is also observed. The present simulations also show that the bubble bursts by generating a partially opened lid, which has already been observed in previous independent experiments.

    F: Angewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Marcus Dittrich, S. Städter

    Moral hazard and bargaining over incentive contracts

    Research in Economics, vol. 69, no. 1, pp. 75-85

    2015

    DOI: 10.1016/j.rie.2014.10.002

    Abstract anzeigen

    This paper analyses bargaining over an incentive compatible contract in a moral hazard framework. We introduce the Kalai–Smorodinsky bargaining solution and compare the outcome with the commonly applied Nash solution. Whether worker׳s effort is higher in the Nash or the Kalai–Smorodinsky solution depends on the agents׳ bargaining power. The social planner can mitigate inefficiencies arising in both bargaining solutions from the moral hazard problem and even achieve the first-best outcome by allocating the agents׳ bargaining power. If raising the worker׳s bargaining power is necessary to achieve the first-best solution, this increase must be higher in the Nash solution than in the Kalai–Smorodinsky solution.

    F: Angewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Marcus Dittrich, B. Mey

    Gender differences in volunteer activities: Evidence from German survey data

    Economics Bulletin, vol. 35, no. 1, pp. 349-360

    2015

    Abstract anzeigen

    In this study, we examine the gender differences in formal and informal volunteering using data from a Time Use Survey in Germany. Our study finds strong evidence that women are more likely to volunteer formally if they also volunteer informally, suggesting that the decisions are complementary. However, for men the decisions to volunteer formally and informally are not significantly related. Moreover, we find that gender differences in labour force participation cannot explain our results.

    F: Angewandte Wirtschaftswissenschaften

    Zeitschriftenartikel

    Marcus Dittrich

    Gender differences in trust and reciprocity: Evidence from a large-scale experiment with heterogenous subjects

    Applied Economics, vol. 47, no. 36, pp. 3825-3838

    2015

    DOI: 10.1080/00036846.2015.1019036

    Abstract anzeigen

    This article examines gender differences in an experimental trust game. Recent studies have shown that men trust more and that women are more reciprocal in laboratory experiments. Participants in these studies, however, are typically university students who may not be representative of the entire population. In this study, we use data from a large-scale experiment with heterogeneous subjects who are representative of the German population. We find that men exhibit not only more trusting behaviour, but also more reciprocating behaviour than women. Moreover, our results are indicative of age-dependent gender differences. For men, we find an inverse U-shaped relationship between age, on the one hand, and both trust and reciprocity, on the other; however, we do not find age effects for women.

    NachhaltigF: Elektrotechnik und MedientechnikI: IQMA

    Zeitschriftenartikel

    Manuel Bogner, Alexander Hofer, Günther Benstetter, H. Gruber, R.Y.Q. Fu

    Differential 3ω method for measuring thermal conductivity of AIN and SI3N4 thin films

    Thin Solid Films, vol. 591 Part B, pp. 267-270

    2015

    DOI: 10.1016/j.tsf.2015.03.031

    Abstract anzeigen

    The thermal conductivity λ of plasma enhanced chemical vapor deposited Si3N4 and sputtered AlN thin films deposited on silicon substrates were obtained utilizing the differential 3ω method. A thin electrically conductive strip was deposited onto the investigated thin film of interest, and used as both a heater and a temperature sensor. To study the thickness dependent thermal conductivity of AlN and Si3N4 films their thickness was varied from 300 to 1000 nm. Measurements were performed at room temperature at a chamber pressure of 3.1 Pa. The measured thermal conductivity values of AlN and Si3N4 thin films were between 5.4 and 17.6 Wm− 1 K− 1 and 0.8 up to 1.7 Wm− 1 K− 1, respectively. The data were significantly smaller than that of the bulk materials found in literature (i.e., λAlN = 250–285 Wm− 1 K− 1, λSi3N4 = 30 Wm− 1 K− 1), due to the scaling effects, and also strongly dependent on film thickness, but were comparable with literature for the corresponding thin films.

    NachhaltigF: Elektrotechnik und MedientechnikI: IQMA

    Zeitschriftenartikel

    L. Hamann, Günther Benstetter, Alexander Hofer, M. Mattheis, M. Haas, R. Zapf-Gottwick

    Use of Coated-Metal Particles in Rear Busbar Pastes to Reduce Silver Consumption

    IEEE Journal of Photovoltaics, vol. 5, no. 2, pp. 534-537

    2015

    DOI: 10.1109/JPHOTOV.2014.2388080

    Abstract anzeigen

    Reducing the amount of silver is one of the most important ways to reduce the cost of photovoltaic cells. The common way to reduce silver consumption on a cell is the reduction of the metal content in the paste. We present a new paste with silver-coated nickel particles, reducing the silver amount and still keeping the properties of silver related to oxidation and sintering. This paper shows the limits in conductivity due to porosity and oxidation of coated-metal particle pastes in comparison with silver pastes. Simulations and cell tests show that coated-metal particle pastes reduce silver consumption without decreasing the cell efficiency replacing busbar pastes. Coated-metal particle pastes are able to decrease silver consumption for rear-side busbars to c Ag <; 1.4 mg/cm 2 , leading to a conductivity σ BB = 1.110 5 S/cm, without decreasing cell or module efficiency. The conductivity of coated-metal particle pastes is too low using pastes with coated-metal particles as a replacement for the metallization paste for grid fingers but good enough to replace the silver paste for busbars with a cheap alternative.

    F: Maschinenbau und Mechatronik

    Patent

    Stefan Scherbarth

    Verfahren zum Fräsen von Kugelbahnen und Scheibenfräser für Kugelbahnen

    2015

    NachhaltigF: Elektrotechnik und MedientechnikI: IQMA

    Zeitschriftenartikel

    Tobias Berthold, Günther Benstetter, Werner Frammelsberger, R. Rodríguez, M. Nafría

    Nanoscale characterization of copper oxide films by Kelvin Probe Force Microscopy

    Thin Solid Films, vol. 584, no. June 2015, pp. 310-315

    2015

    DOI: 10.1016/j.tsf.2015.01.071

    Abstract anzeigen

    In this work Peakforce Kelvin Probe Force Microscopy (PF-KPFM) at ambient environment is used to characterize both oxidation states of copper (Cu) surfaces, cupric oxide CuO and cuprous oxide Cu2O, with high lateral resolution. Characteristic values of the contact potential difference were obtained for the copper oxide states. By this means, PF-KPFM measurements enabled to distinguish between the different types of Cu oxide with nanometer resolution and to correlate the oxidation states to local topography features. It was even possible to identify single oxide grains on top of the Cu surface. As a result, PF-KPFM is able to address the needs for nanoscale characterization methods in semiconductor manufacturing or other related technologies where the local oxidation behavior of copper is a critical issue.

    DigitalMobilF: Elektrotechnik und Medientechnik

    Zeitschriftenartikel

    Terézia Tóth

    Compliance-Verifikations-Prozess für Automotive-Ethernet-Steuergeräte: Maximale Standardisierung

    Elektronik automotive - Sonderheft ethernet, no. 3

    2015

    F: Elektrotechnik und Medientechnik

    Vortrag

    Terézia Tóth

    Compliance Verification Process for Ethernet ECUs

    Automotive Ethernet Congress 2015, München

    2015

    I: Hochschulleitung und -einrichtungen

    Zeitschriftenartikel

    Robert Rossberger, D. Krause

    Participative and Team-Oriented Leadership Styles, Countries’ Education Level, and National Innovation

    The Mediating Role of Economic Factors and National Cultural Practices

    Cross Cultural Research, vol. 49, no. 1, pp. 20-56

    2015

    Abstract anzeigen

    The present study aims to provide insights into the leadership–innovation relationship on the national level by considering national-level contingency factors. We argue that the impact of a prevailing leadership style on innovation is mediated by economic and political factors and innovation-related cultural practices. Moreover, it is argued that the educational level of a country is related to the prevailing leadership style and economic factors. We propose a model and test its explanatory power with a sample of 55 countries using variance-based structural equation modeling. The results show that the prevailing leadership style has no direct relationship with national innovation but is mediated by the abovementioned factors. The results also show that the level of education within a country is positively related to participative leadership and negatively to team-oriented leadership. Furthermore, the level of education is directly related to economic and political factors and indirectly to national innovation.