TY - CONF AB - Hydrothermal method enables to synthesize high quality piezoelectric materials. To shorten the reaction time and to get higher quality materials, we propose an ultrasonic irradiation to the solution during the hydrothermal method. We named it ultrasonic assisted hydrothermal method (UAHTM). We have synthesized lead-free piezoelectric material and PZT thin film and the effect of UAHTM have been confirmed. In this study, we tried to improve UAHTM. First, to generate powerful and stable ultrasonic irradiation at high temperature on UAHTM, we developed a new transducer using LiNbO3 single crystal. Second, to prevent contamination to the materials, A Teflon cover on the tip of transducer was attached. AU - Isobe, Gaku AU - Ageba, Ryo AU - Maeda, Takafumi AU - Bornmann, Peter AU - Hemsel, Tobias AU - Morita, Takeshi ED - B. J. Linde, Bogumil ED - Paczkowski, Jacek ED - Ponikwicki, Nikodem ID - 9785 IS - 1 KW - contamination KW - lead compounds KW - piezoelectric materials KW - piezoelectric thin films KW - piezoelectric transducers KW - ultrasonic effects T2 - AIP Conference Proceedings TI - Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method VL - 1433 ER - TY - JOUR AB - Self-optimizing mechatronic systems are a new class of technical systems. On the one hand, new challenges regarding dependability arise from their additional complexity and adaptivity. On the other hand, their abilities enable new concepts and methods to improve the dependability of mechatronic systems. This paper introduces a multi-level dependability concept for selfoptimizing mechatronic systems and shows how probabilistic planning can be used to improve the availability and reliability of systems in the operating phase. The general idea to improve the availability of autonomous systems by applying probabilistic planning methods to avoid energy shortages is exemplified on the example of an innovative railway vehicle. AU - Klöpper, Benjamin AU - Sondermann-Wölke, Christoph AU - Romaus, Christoph ID - 9786 IS - 1 JF - Journal of Robotics and Mechatronics KW - self-optimizing systems KW - dependability KW - probabilistic planning KW - energy management TI - Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle VL - 24 ER - TY - CONF AU - Kohl, Sergej AU - Sextro, Walter AU - Zuber, Armin ID - 9787 T2 - 8. Tag des Fahrwerks, Aachen, 2012 TI - Benteler Vehicle Dynamics -- Fahrdynamikentwicklung basierend auf einer neuen Auslegungstheorie ER - TY - CONF AB - A hydrothermal method utilizes a crystallization process in the solution so that the pure and high-quality powders can be realized. Sintering from the hydrothermal KNbO3 and NaNbO3 powders, a high-dense lead-free piezoelectric (K,Na)NbO3 ceramics could be obtained (density: 98.8\%). Concerning about the g33 constant, high value as large as commercial PZT ceramics was measured. Therefore, the hydrothermal (K,Na)NbO3 ceramics is usable for the sensors and the energy harvesting devices. To demonstrate the (K,Na)NbO3 ceramics, a hydrophone sensor was fabricated and evaluated. AU - Maeda, Takafumi AU - Bornmann, Peter AU - Hemsel, Tobias AU - Morita, Takeshi ID - 9788 KW - crystallisation KW - hydrophones KW - piezoceramics KW - potassium compounds KW - powder technology KW - powders KW - sensors KW - sintering KW - sodium compounds KW - (K0.48Na0.52)NbO3 KW - KNbO3 powder KW - NaNbO3 powder KW - crystallization KW - energy harvesting devices KW - g33 constant KW - hydrophone sensor KW - hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics KW - hydrothermal method KW - piezoelectric applications KW - sintering KW - Materials KW - Transducers SN - 1948-5719 T2 - Ultrasonics Symposium (IUS), 2012 IEEE International TI - Piezoelectric applications of hydrothermal lead-free (K0.48Na0.52)NbO3 ceramics ER - TY - JOUR AB - [$Li_x(Na_0.52K_0.48)_1-x]NbO_3 (0 \leq x \leq 0.091)$ ceramics were synthesized using hydrothermal powders and the lithium doping content was controlled to optimize their piezoelectric properties. The raw KNbO$_3$ and NaNbO$_3$ powders were obtained separately by a hydrothermal method and LiNbO$_3$ powders were prepared by milling a commercial LiNbO$_3$ single crystal. These powders were mixed with ethanol at a molar ratio LiNbO$_3$: ($Na_0.52K_0.48$)NbO$_3 = x : 1-x$. The synthesized powders were sintered at 1060--1120 $\,^{\circ}$C for 2 h. We succeeded in obtaining highly dense [$Li_x(Na_0.52K_0.48)_1-x]NbO_3$ ceramics using hydrothermal powder. The X-ray diffraction patterns revealed that the crystal phase changed from orthorhombic to tetragonal at around x = 0.06. At this morphotropic phase boundary (MPB), the c/a ratio changed from 1.016 to 1.024 and the highest piezoelectric constant was obtained with the chemical component of [$Li_x(Na_0.52K_0.48)_1-x]NbO_3$. The obtained piezoelectric properties were as follows: $k_33 = 0.51, \epsilon 33^T/ \epsilon _0 = 836$ , $c_33^E = 46$ GPa, $d_33 = 203$ pC/N, and $T_c = 482 $\,^{\circ}$C$. AU - Maeda, Takafumi AU - Hemsel, Tobias AU - Morita, Takeshi ID - 9789 JF - Japanese Journal of Applied Physics TI - Piezoelectric Properties of Li-Doped (K0.48Na0.52)NbO3 Ceramics Synthesized Using Hydrothermally-Derived KNbO3 and NaNbO3 Fine Powders VL - 51 ER - TY - CONF AB - The rapid development of communication and information technology opens up fascinating perspectives, which go far beyond the state of the art in mechatronics: mechatronic systems with inherent partial intelligence. These so called self-optimizing systems adapt their objectives and behavior autonomously and flexibly to changing operating conditions. On the one hand, securing the dependability of such systems is challenging due to their complexity and non-deterministic behavior. On the other hand, self-optimization can be used to increase the dependability of the system during its operation. However, it has to be ensured, that the self-optimization works dependable itself. To cope with these challenges, the multi-level dependability concept was developed. It enables predictive condition monitoring, influences the objectives of the system and determines suitable means to improve the system's dependability during its operation. In this contribution we introduce a procedure for the conceptual design of an advanced condition monitoring based on the system's principle solution. The principle solution describes the principal operation mode of the system and its desired behavior. It is modeled using the specification technique for the domain-spanning description of the principle solution of a self-optimizing system and consists of a coherent system of eight partial models (e.g. requirements, active structure, system of objectives, behavior, etc.). The partial models are analyzed separately in order to derive the components of the multi-level dependability concept. In particular, the reliability analysis of the partial model active structure is performed to identify the system elements to be monitored and parameters to be measured. The principle solution is extended accordingly: e.g. with system elements required for the realization of the dependability concept. The advantages of the method are shown on the self-optimizing guidance module of a railroad vehicle. AU - Sondermann-Wölke , Christoph AU - Meyer, Tobias AU - Dorociak, Rafal AU - Gausemeier, Jürgen AU - Sextro, Walter ID - 9791 KW - Mechatronic Systems KW - Principle Solution KW - Condition Monitoring KW - Conceptual Design T2 - Proceedings of the 11th International Probabilistic Safety Assessment and Management Conference (PSAM11) and The Annual European Safety and Reliability Conference (ESREL2012) TI - Conceptual Design of Advanced Condition Monitoring for a Self-Optimizing System based on its Principle Solution ER - TY - JOUR AB - Piezoelectric inertia motors, also known as ``stick-slip-drives'', use the inertia of a body to drive it by means of a friction contact in small steps. While these steps normally involve stiction and sliding, the motors can also operate in ``slip-slip'' mode without any phase of static friction. In this contribution, a one degree of freedom model of an inertia motor driven by an ideal actuator is analysed. Start-up and constant velocity operation of the motor are investigated and appropriate quantities to compare ``stick-slip'' and ``slip-slip'' operation are determined. Different aspects such as velocity, uniformity of motion, load capacity, robustness, efficiency, and wear are considered. The analysis allows both modes to be applied advantageously in different applications and can widen the field of application of piezoelectric inertia motors. Motor designers are enabled to choose the appropriate mode of operation and the best drive parameters for their individual applications. AU - Hunstig, Matthias AU - Hemsel, Tobias AU - Sextro, Walter ID - 9806 JF - ACTUATOR 2012 Conference Proceedings KW - Piezoelectric Inertia Motors KW - Drive Signals KW - Stick-slip KW - Slip-slip TI - Analysis of different operation modes for inertia motors ER - TY - JOUR AB - Aiming to diminish the reflection losses of glass covered light harvesting devices, the optical reflectivity of nanostructured glass surfaces is studied theoretically and experimentally. The work is inspired by the nanoscale roughness of insect eyes, which is tried to be replicated on a technical glass surface. To this end, the reflectivity of glass surfaces with topographies represented by linear, parabolic and Fermishaped glass/air fill factor profiles is calculated for normal incidence. It is shown that using the latter ones, an almost complete suppression of reflections can be achieved. A simple, self-organization technique to create such Fermi-shaped filling factor profiles in glass experimentally is also presented. AU - Achtelik, J. AU - Sievers, W. AU - Lindner, Jörg ID - 4095 IS - 9 JF - Materials Science and Engineering: B SN - 0921-5107 TI - Biomimetic approaches to create anti-reflection glass surfaces for solar cells using self-organizing techniques VL - 178 ER - TY - JOUR AB - We report on the molecular beam epitaxy growth of cubic GaN on 3C–SiC (001) nanostructures. Transmission electron microscopy (TEM) studies show phase-pure cubic GaN crystals with a low defect density on top of the post shaped 3C–SiC nanostructures and GaN grown on their sidewalls, which is dominated by {111} planar defects. The nanostructures, aligned parallel and perpendicular to the [110] directions of the substrate, are located in anti-phase domains of the 3C–SiC/Si (001) substrate. These anti-phase domains strongly influence the optimum growth of GaN layers in these regions. TEM measurements demonstrate a different stacking fault density in the cubic GaN epilayer in these areas. AU - Kemper, R.M. AU - Hiller, L. AU - Stauden, T. AU - Pezoldt, J. AU - Duschik, K. AU - Niendorf, T. AU - Maier, H.J. AU - Meertens, D. AU - Tillmann, K. AU - As, D.J. AU - Lindner, Jörg ID - 4104 JF - Journal of Crystal Growth SN - 0022-0248 TI - Growth of cubic GaN on 3C–SiC/Si (001) nanostructures VL - 378 ER - TY - JOUR AB - Two methods to create biomimetic anti-reflection nanostructures in ordinary glass microscope object slides are presented. One technique is based on a nanosphere lithography process combined with physical vapour deposition of nickel and reactive ion etching (RIE). The other uses plasma induced dewetting of a smooth nickel surface. The amount of reflected light was measured and a method to simulate the reflectivity from an atomic force microscopy (AFM) topography scan of the glass surface is presented. The reflectivity for visible light at normal incidence was reduced to 20-50 % of the original value with both methods and the simulation gives results in good agreement to the measurement. AU - Achtelik, Jörn AU - Kemper, Ricarda M. AU - Sievers, Werner AU - Lindner, Jörg ID - 4114 JF - MRS Proceedings SN - 1946-4274 TI - Self-Organized Nanostructure Formation for Anti-Reflection Glass Surfaces VL - 1389 ER - TY - CONF AU - Brodehl, Christoph AU - Greulich-Weber, Siegmund AU - Lindner, Jörg ID - 4115 TI - Gyrotropic Metamaterials ER - TY - JOUR AB - We report an anisotropic formation of defects in cubic GaN grown on nano-patterned 3C-SiC/Si (001) by molecular beam epitaxy. Nano-patterning of 3C-SiC/Si (001) is achieved by nanosphere lithography and a reactive ion etching process. Atomic force microscopy and scanning electron microscopy show that the selectivearea- grown cubic GaN nucleates in two structurally different domains, which most probably originate from the substrate. In adjacent domains the formation of defects, especially hexagonal inclusions, is different and leads to two different surface morphologies. The dominant phase within these domains was measured by electron backscatter diffraction. Optical properties were investigated by micro-photoluminescence and cathodoluminescence spectroscopy. AU - Kemper, R. M. AU - Häberlen, M. AU - Schupp, T. AU - Weinl, M. AU - Bürger, M. AU - Ruth, M. AU - Meier, Cedrik AU - Niendorf, T. AU - Maier, H. J. AU - Lischka, K. AU - As, D. J. AU - Lindner, Jörg ID - 4131 IS - 3-4 JF - physica status solidi (c) SN - 1862-6351 TI - Formation of defects in cubic GaN grown on nano-patterned 3C-SiC (001) VL - 9 ER - TY - CONF AU - Kemper, R.M. AU - Hiller, L. AU - Stauden, T. AU - Pezoldt, J. AU - Meertens, D. AU - Luysberg, M. AU - Tillmann, K. AU - Riedl, Thomas AU - As, Donald AU - Lindner, Jörg ID - 4133 TI - TEM investigation of GaN thin films grown on nanostructured 3C-SiC/Si(001) substrates ER - TY - CONF AU - Lindner, Jörg ID - 4134 TI - Nanosphere Lithography: State-of-the-art and Future Directions ER - TY - CONF AU - Pauly, Johannes AU - Lindner, Jörg ID - 4135 TI - TEM Characterization of Nickel Nanodot Arrays on Silicon formed by Nanosphere Lithography ER - TY - CONF AU - Lindner, Jörg ID - 4138 TI - Nanokugellithographie: Grundlagen und Anwendungen ER - TY - CONF AU - Lindner, Jörg ID - 4139 TI - Nanolithographie von Oberflächen für das Wachstum optoelektronischer Strukturen ER - TY - JOUR AU - Chen, Xianzhong AU - Huang, Lingling AU - Mühlenbernd, Holger AU - Li, Guixin AU - Bai, Benfeng AU - Tan, Qiaofeng AU - Jin, Guofan AU - Qiu, Cheng-Wei AU - Zhang, Shuang AU - Zentgraf, Thomas ID - 43 JF - Nature Communications SN - 2041-1723 TI - Dual-polarity plasmonic metalens for visible light VL - 3 ER - TY - JOUR AU - Feneberg, Martin AU - Röppischer, Marcus AU - Cobet, Christoph AU - Esser, Norbert AU - Schörmann, Jörg AU - Schupp, Thorsten AU - As, Donat Josef AU - Hörich, Florian AU - Bläsing, Jürgen AU - Krost, Alois AU - Goldhahn, Rüdiger ID - 4333 IS - 15 JF - Physical Review B SN - 1098-0121 TI - Optical properties of cubic GaN from 1 to 20 eV VL - 85 ER - TY - CONF AB - The structural and vibrational properties of lithium niobate (LN) – lithium tantalate (LT) mixed crystals (LNT, LiNb1-xTaxO3) are investigated over the whole composition range by first-principles simulations. The crystal volume grows roughly linearly from LT to LN, whereby the lattice parameters a and c show minor deviations from the Vegard behavior between the end compounds, LiNbO3 and LiTaO3. Our calculations in the framework of the density functional theory show the TO1, TO2 and TO4-modes to become harder with increasing Nb concentration. TO3 becomes softer with increasing Nb content, instead. The frequency shifts of the zone center A1-TO phonon modes for crystals with different compositions are found to be as large as 30 cm-1. Raman spectroscopy, which is sensitive to the A1 modes, can be therefore employed to determine the crystal composition. AU - Sanna, Simone AU - Riefer, Arthur AU - Neufeld, Sergej AU - Schmidt, Wolf Gero AU - Berth, Gerhard AU - Widhalm, Alex AU - Zrenner, Artur ID - 4380 KW - Ferroelectrics KW - Vibrational properties KW - LiNbO3 KW - LiTaO3 KW - Mixed Crystals T2 - Proceedings of ISAF-ECAPD-PFM 2012 TI - Vibrational fingerprints of LiNbO3-LiTaO3 mixed crystals ER - TY - CHAP AB - Coherent physics and applications of exciton qubits in electric fi eld tunable quantum dot structures are our focus. Excitations with picosecond (ps) laser pulses result in qubit rotations. Using state projection by tunnelling the readout can be performed in quantitative way. As a function of electric fi eld induced detuning Ramsey fringes of a single exciton qubit can be observed and controlled for double pulse excitation. Therefore it is possible to demonstrate voltage controlled qubit manipulations within a wide range of pulse delays. Using fast electric signals, phase-locked to ps-laser pulses, the coherent control of an exciton qubit can be obtained by electric interaction. Such voltage controlled qubit manipulations seem to be essential for new types of optoelectronic quantum gates and novel applications in the fi eld of coherent optoelectronics. AU - Michaelis de Vasconcellos, Steffen AU - Gordon, Simon AU - Mantei, Dirk AU - Leier, Yves Alexander AU - Al-Hmoud, M. AU - Quiring, Wadim AU - Zrenner, Artur ED - Jahnke, Frank ID - 4381 KW - excitons KW - quantum bits KW - coherent manipulation KW - Ramsey interference KW - quantum gate SN - 9780857092328 0857092324 T2 - QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES TI - Coherent optoelectronics with quantum dots ER - TY - CHAP AU - Becker, Jörg AU - Beverungen, Daniel AU - Knackstedt, Ralf ED - Granat Janusz Dolk, Daniel; ID - 5032 T2 - Modeling for Decision Support in Network-Based Services: The Application of Quantitative Modeling to Service Science TI - A Method for Selectively Designing Modeling Languages for Product-Service Systems ER - TY - CHAP AU - Becker, Jörg AU - Knackstedt, Ralf AU - Beverungen, Daniel AU - Dietrich, Hanns-Alexander AU - Breuker, Dominic AU - Peter Rauer, Hans ED - Böhmann, Tilo ED - Knackstedt, Ralf ED - Marco Leimeister, Jan ED - Nüttgens, Markus ED - Thomas, Oliver ID - 5034 SN - 978-3-8482-2109-7 T2 - Service Engineering --- Management TI - Ansätze zur methodischen Unterstützung der Konstruktion von Produktivitätsmodellen für die Data Envelopment Analysis --- Entwicklung eines Softwareprototypen zur Umsetzung und Evaluation ER - TY - CHAP AU - Beverungen, Daniel AU - Matzner, Martin AU - Müller, Oliver AU - Becker, Jörg ED - Barros, Alistair ED - Oberle, Daniel ID - 5035 SN - 978-1-4614-1864-1 T2 - Handbook of Service Description TI - Product-Service System Approaches ER - TY - GEN AU - Hegemann, Annika ID - 5051 TI - Besteuerung von Beteiligungsinvestitionen und Risikoempfindlichkeit – Wie wirkt die Abgeltungssteuer? VL - 140 ER - TY - GEN AU - Mehrmann, Annika AU - Schneider, Georg AU - Sureth-Sloane, Caren ID - 5055 TI - Asymmetric Taxation of Profits and Losses and Its Influence on Investment Timing: Paradoxical Effects of Tax Increases VL - 134 ER - TY - JOUR AU - Sloane, Peter F. E. AU - Sureth-Sloane, Caren ID - 5056 IS - 7-8 JF - Wirtschaft und Beruf TI - Mehr Theorie wagen. Betriebswirtschaftslehre nach Bologna oder Hochschulbildung im Wandel VL - 64 ER - TY - GEN AU - Sureth-Sloane, Caren ID - 5057 IS - 112 T2 - Frankfurter Allgemeine Zeitung TI - Analytisch und strukturiert denken lernen ER - TY - GEN AU - Sureth-Sloane, Caren ID - 5060 T2 - Frankfurter Allgemeine Zeitung TI - Studium nach Bologna: Theorie oder Praxis – ein Scheinwiderspruch? ER - TY - JOUR AU - Sureth-Sloane, Caren ID - 5063 IS - 7-8 JF - Wirtschaft und Beruf TI - Unternehmensführung und interkulturelle Hochschulbildung. Unternehmensführung in Europa - Interkulturelle Fragen VL - 64 ER - TY - CHAP AU - Sureth-Sloane, Caren ED - Burr, Wolfgang ED - Wagenhofer, Alfred ID - 5066 T2 - Der Verband der Hochschullehrer für Betriebswirtschaft, Geschichte des VHB und Geschichten zum VHB TI - Vorwort. Geschichte des VHB und der BWL: Rückblick und Einblicke ER - TY - GEN AU - Sureth-Sloane, Caren AU - zu Knyphausen-Aufseß, Dodo ID - 5069 IS - 276 T2 - Frankfurter Allgemeine Zeitung TI - Welcher BWLer ist ein guter Forscher? ER - TY - JOUR AU - Gilroy, Bernard Michael AU - Kruse, Daniel ID - 5116 IS - 3 JF - WiSt-Wirtschaftswissenschaftliches Studium TI - Die Prinzipal-Agent-Theorie als Erklärungsinstrumentarium von Korruption VL - 41 ER - TY - JOUR AU - Bodden, Eric AU - Lam, Patrick AU - Hendren, Laurie ID - 5183 IS - 2 JF - ACM Transactions on Programming Languages and Systems SN - 0164-0925 TI - Partially Evaluating Finite-State Runtime Monitors Ahead of Time VL - 34 ER - TY - JOUR AB - We study the predictive ability of individual analyst target price changes for post-event abnormal stock returns within each recommendation category. Although prior studies generally demonstrate the investment value of target prices, we find that target price changes do not cause abnormal returns within each recommendation level. Instead, contradictory analyst signals (e.g., strong buy reiterations with large target price decreases) neutralize each other, whereas confirmatory signals reinforce each other. Further, our analysis reveals that large target price downgrades can be explained by preceding stock price decreases. However, upgrades are not preceded by stock price increases, thereby demonstrating asymmetric analyst behavior when adjusting target prices to stock prices. Our results suggest that investors should treat recommendations with caution when they are issued with large contradictory target price changes. Thus, instead of blindly following a recommendation, investors might put more weight on the change in the corresponding target price and consider transaction costs. AU - Kanne, Stefan AU - Klobucnik, Jan AU - Kreutzmann, Daniel AU - Sievers, Sönke ID - 5193 IS - 4 JF - Financial Markets and Portfolio Management (VHB-JOURQUAL 3 Ranking C) KW - Analyst recommendation KW - Target price KW - Stock performance KW - Trading strategy TI - To buy or not to buy? The value of contradictory analyst signals VL - 26 ER - TY - JOUR AB - This study shows how venture capital investors can identify potential biases in multi-year management forecasts before an investment decision and derive significantly more accurate failure predictions. By advancing a cross-sectional projection method developed by prior research and using firm-specific information in financial statements and business plans, we derive benchmarks for management revenue forecasts. With these benchmarks, we estimate forecast errors as an a priori measure of biased expectations. Using this measure for our proprietary dataset on venture-backed start-ups in Germany, we find evidence of substantial upward forecast biases. We uncover that firms with large forecast errors fail significantly more often than do less biased entrepreneurs in years following the investment. Overall, our results highlight the implications of excessive optimism and overconfidence in entrepreneurial environments and emphasize the relevance of accounting information and business plans for venture capital investment decisions. AU - Mokwa, Christopher Frederik AU - Sievers, Sönke ID - 5196 JF - SSRN Electronic Journal KW - Management forecast biases KW - cross-sectional projection models KW - venture-backed start-ups KW - failure prediction KW - overoptimism KW - overconfidence TI - The Relevance of Biases in Management Forecasts for Failure Prediction in Venture Capital Investments ER - TY - JOUR AB - This study provides evidence of significant biases in multi-year management forecasts by analyzing a proprietary dataset on venture-backed start-ups in Germany. We find that revenues and expenses are highly overestimated in each of the investigated one- to five-year-ahead planning periods. Furthermore, entrepreneurs underestimate one-year-ahead profit forecasts but clearly overestimate their profit forecasts for all longer-term forecast horizons. Additional analyses reveal that teams with prior management experience issue even more overestimated forecasts and misrepresent their forward-looking information. In contrast, greater asset verifiability and corporate lead investors are associated with lower levels of forecast errors. All key results hold if bias is either measured by traditionally comparing forecasts to ex-post realizations or by using a cross-sectional projection approach based on historical accounting data developed by prior research. AU - Mokwa, Christopher AU - Sievers, Sönke ID - 5198 JF - SSRN Electronic Journal KW - Management forecasts KW - Forecasting biases KW - Venture-backed start-ups KW - Projection methods TI - Biases in Management Forecasts of Venture-Backed Start-Ups: Evidence from Internal Due Diligence Documents of VC Investors ER - TY - CHAP AU - Schmitz, Hendrik AU - Eibich, P. AU - Ziebarth, N.R. ID - 5242 T2 - DIW Economic Bulletin TI - Add-On Premiums Increase Price Transparency: More Policy Holders Switch Health Plans VL - 2 ER - TY - JOUR AU - Schmitz, Hendrik AU - Augurzky, B. AU - Beivers, A. ID - 5243 JF - Krankenhaus-Report 2012 TI - Regionale Unterschiede in der stationären Versorgung: Das ländliche Krankenhaus im Fokus ER - TY - JOUR AU - Baum, M AU - Gsell, L AU - Kabst, Rüdiger ID - 5494 IS - 3 JF - Die Betriebswirtschaft (ZfB). TI - Determinanten des Employer Branding in deutschen Unternehmen: Ein neoinstitutionalistischer Erklärungsansatz. VL - 72 ER - TY - JOUR AU - Baum, M AU - Kabst, Rüdiger ID - 5496 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Die Wirkung von informellen und internetbasierten Rekrutierungskanälen auf den Rekrutierungserfolg: Eine empirische Analyse in kleinen und mittleren Unternehmen. VL - 3 ER - TY - JOUR AU - Maekelburger, B AU - Schwens, C AU - Kabst, Rüdiger ID - 5497 IS - 5 JF - Journal of International Business Studies (JIBS). TI - Asset Specificity and Foreign Market Entry Mode Choice of Small and Medium-Sized Enterprises: The Moderating Influence of Knowledge Safeguards and Institutional Safeguards. VL - 42 ER - TY - JOUR AU - Eberz, L M AU - Baum, M AU - Kabst, Rüdiger ID - 5498 IS - 1 JF - Zeitschrift für Personalforschung (ZfP). TI - Der Einfluss von Rekrutiererverhaltensweisen auf den Bewerber: Ein mediierter Prozess. VL - 26 ER - TY - JOUR AU - Wehner, M C AU - Kabst, Rüdiger AU - Meifert, M AU - Cunz, L M ID - 5508 IS - 9 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Der Personalverantwortliche als strategischer Partner: Persönliche Einstellung oder subjektive Norm? VL - 82 ER - TY - JOUR AU - Strohmeier, S AU - Kabst, Rüdiger ID - 5510 IS - 3 JF - International Journal of Business Information Systems (IJBIS). TI - Evaluating Major Human Resource Information Systems Design Characteristics: An Empirical Analysis. VL - 9 ER - TY - JOUR AU - Frese, M AU - Bausch, A AU - Schmidt, P AU - Rauch, A AU - Kabst, Rüdiger ID - 5512 IS - 1 JF - Foundations and Trends in Entrepreneurship. TI - Evidence-based entrepreneurship (EBE): Cumulative science, action principles, and bridging the gap between science and practice. VL - 8 ER - TY - JOUR AU - Wehner, M C AU - Giardini, A AU - Kabst, Rüdiger ID - 5515 IS - 4 JF - Human Resource Management. TI - Graduates’ Reactions to Recruitment Process Outsourcing: A Scenario-Based Study. VL - 51 ER - TY - JOUR AU - Eiche, J AU - Schwens, C AU - Kabst, Rüdiger ID - 5516 IS - 3 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Greenfield Investment versus Akquisition: Der moderierende Einfluss wahrgenommener institutioneller Unsicherheit bei der Internationalisierung von KMU. VL - 82 ER - TY - JOUR AU - Isidor, R AU - Schwens, C AU - Kabst, Rüdiger AU - Hornung, F ID - 5518 IS - 5 JF - Zeitschrift für Betriebswirtschaft (ZfB). TI - Internationaler Joint Venture Erfolg: Eine Meta-Analyse. VL - 82 ER - TY - JOUR AU - Steinmetz, Holger AU - Isidor, R AU - Bäuerle, N ID - 5519 IS - 1 JF - Survey Research Methods TI - Testing the Circular Structure of Human Values: A Meta-Analytical Structural Equation Modelling Approach. VL - 6 ER - TY - JOUR AU - Wex, Felix AU - Schryen, Guido AU - Neumann, Dirk ID - 5578 IS - 3 JF - International Journal of Information Systems for Crisis Response and Management TI - A Fuzzy Decision Support Model for Natural Disaster Response under Informational Uncertainty VL - 4 ER - TY - CONF AU - Wex, Felix AU - Schryen, Guido AU - Neumann, Dirk ID - 5579 T2 - International Conference on Information Systems for Crisis Response and Management (ISCRAM) 2012 TI - Operational Emergency Response under Informational Uncertainty: A Fuzzy Optimization Model for Scheduling and Allocating Rescue Units ER - TY - CONF AU - Schryen, Guido AU - Wex, Felix ID - 5615 T2 - 45th Hawaii International Conference on System Sciences TI - IS Design Thinking in Disaster Management Research ER - TY - JOUR AU - Schryen, Guido ID - 5638 JF - Die Zeit TI - Profis im Netz: Soziale Netzwerke könnten in Unternehmen viel mehr Nutzen stiften - woran hakt es?, in: Die Zeit (12.04.2012) ER - TY - JOUR AU - Schryen, Guido ID - 5639 JF - IM Information Management & Consulting TI - Soziale Netzwerke in Unternehmenskontexten - Potentiale und Anforderungen, in: Information Management & Consulting, to appear ER - TY - CONF AB - In model-driven development of multi-layer systems (e.g. application, platform and infrastructure), each layer is usually described by separate models. When generating analysis models or code, these separate models rst of all need to be linked. Hence, existing model transformations for single layers cannot be simply re-used. In this paper, we present a modular approach to the transformation of multi-layer systems. It employs model weaving to dene the interconnections between models of dierent layers. The weaving models themselves are subject to model transformations: The result of transforming a weaving model constitutes a conguration for the models obtained by transforming single layers, thereby allowing for a re-use of existing model transformations. We exemplify our approach by the generation of analysis models for component-based software. AU - Besova, Galina AU - Walther, Sven AU - Wehrheim, Heike AU - Becker, Steffen ID - 565 T2 - Proceedings of the 15th International Conference on Model Driven Engineering Languages & Systems (MoDELS) TI - Weaving-based configuration and modular transformation of multi-layer systems ER - TY - GEN AU - Hilger, Ina ID - 566 TI - Untersuchung von Modellen zur operativen Planung in Trinkwasserversorgungsnetzwerken ER - TY - CHAP AU - Kremer, H.-Hugo ED - Kremer, H.-H. ED - Beutner, M. ED - Zoyke, A. ID - 6463 T2 - Individuelle Förderung und berufliche Orientierung im berufsschulischen Übergangssystem - Ergebnisse aus dem Forschungs- und Entwicklungsprojekt InLab TI - Berufsorientierung im Übergang - Überlegungen zur curricularen Gestaltung der Bildungsarbeit im Übergangssystem ER - TY - JOUR AU - Tramm, T. AU - Seeber, S. AU - Kremer, H.-Hugo ID - 6519 IS - 22 JF - bwp@ Berufs- und Wirtschaftspädagogik - online TI - Funktionen und Erträge pädagogischer Diagnostik im wirtschafts- und berufspädagogischen Bereich (Editorial) ER - TY - JOUR AU - Büchter, K. AU - Frommberger, D. AU - Kremer, H.-Hugo ID - 6521 IS - 22 JF - bwp@ Berufs- und Wirtschaftspädagogik - online TI - Akademisierung der Berufsbildung - Editorial ER - TY - CONF AU - Böttcher, Stefan AU - Hartel, Rita AU - Heindorf, Stefan ID - 6720 T2 - ADC TI - Optimized XPath evaluation for Schema-compressed XML data VL - 124 ER - TY - JOUR AU - Chernilovskaya, A. AU - Gehrke, M. AU - van Rooijen, Lorijn ID - 6733 IS - 6 JF - Logic Journal of IGPL SN - 1367-0751 TI - Generalized Kripke semantics for the Lambek-Grishin calculus VL - 20 ER - TY - CONF AU - Böttcher, Stefan AU - Bokermann, Dennis AU - Hartel, Rita ID - 6742 SN - 9781467351522 T2 - 8th International Conference on Signal Image Technology and Internet Based Systems (SITIS'12) TI - Generalizing and Improving SQL/XML Query Evaluation ER - TY - BOOK ED - Tönnies, Merle ED - Buschmann, Heike ID - 6753 TI - Spatial Representations of British Identities ER - TY - JOUR AU - Tönnies, Merle ID - 6784 JF - Facteurs d'Identité / Faktoren der Identität TI - A Bricolage of Identities in Crisis. Colour Photography Documenting Northern England under Thatcher ER - TY - CONF AU - Leers, Mathias AU - Preiss, Alexander AU - Ferretti, Nicoletta AU - Krauter, Stefan ID - 6855 SN - 9781424499656 T2 - 2011 37th IEEE Photovoltaic Specialists Conference TI - Measurement of spectral-spatial distribution of global irradiance ER - TY - CONF AU - Krauter, Stefan AU - Lang, o. ID - 6892 T2 - 7th International Renewable Energy Storage Conference (IRES 2012), Berlin (Germany), 12.-14. November 2012 TI - Suitable test procedure for electrical energy storage in PV operation mode – implementation and implication ER - TY - CONF AU - Krauter, Stefan ID - 6893 T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt a. M. (Germany), 24.-28. September 2012, pp. 4520-4522 TI - PV 3.0 ER - TY - CONF AU - Krauter, Stefan AU - Chen, S. ID - 6895 T2 - Proceedings of 6th International Photovoltaic Power Generation Conference SNEC 2012, Shanghai (China), 16.-18. June 2012 TI - Technical Assurance for High Reliable PV Modules via PI Testing ER - TY - JOUR AU - Krauter, Stefan ID - 6897 IS - April JF - PV Magazine April 2012 TI - Solar PV in Latin America. ER - TY - CONF AU - Koch, S. AU - Berghold, J. AU - Okoroafor, O. AU - Krauter, Stefan AU - Grunow, Paul ID - 6898 T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt a. M. (Germany), 24.-28. September 2012, pp. 1991-1995 TI - Encapsulation influence on the potentialinduced degradation of crystalline silicon cells with selective emitter structures. ER - TY - CONF AU - Koch, S. AU - Nieschalk, D. AU - Berghold, J. AU - Wendlandt, S. AU - Krauter, Stefan AU - Grunow, Paul ID - 6899 T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference and Exhibition, Frankfurt a. M. (Germany), 24.-28. September 2012, pp. 1985-1990 TI - Potential induced degradation effects on crystalline silicon cells with various antireflection coatings ER - TY - CONF AU - Bouyraaman, Yassin AU - Bendfeld, Jörg AU - Krauter, Stefan ID - 6901 T2 - Proceedings of the IRES 2012 (7th International Renewable Energy Storage Conference and Exhibition), Berlin, Germany, 12.-14. November 2012 TI - Storage System Strategies to optimize the Offshore-Wind Farm feed-in Fluctuations ER - TY - CONF AU - Bouyraaman, Yassin AU - Bendfeld, Jörg AU - Navratil, Karl AU - Tigges, Martin ID - 6902 T2 - Proceedings of the DEWEK 2012 TI - Reduction of of Offshore-Wind power feed-in Fluctuations via Power to Gas Storage Systems ER - TY - CONF AU - Bouyraaman, Yassin AU - Thiele, C. AU - Krauter, Stefan ID - 6903 T2 - Zukunftsperspektiven für den Regelenergiemarkt Strom 2012 – IQPC, Berlin, Germany, August 2012 TI - Lösungsaspekte zur Weiterentwicklung des deutschen Regelenergiemarktes hinsichtlich der Integration erneuerbarer Energien. ER - TY - CONF AU - Bouyraaman, Yassin AU - Bendfeld, Jörg AU - Krauter, Stefan ID - 6904 T2 - Proceedings of the WWEC 2012 (11th World Wind Energy Conference 2012), Bonn, Germany, Juli 2012 TI - Increased Availability of Offshore Wind Power by Storage System ER - TY - CONF AU - Bendfeld, Jörg AU - Balluff, Stefan AU - Bouyraaman, Yassin ID - 6905 T2 - Proceedings of the DEWEK 2012 TI - Analysis of Selected Offshore Fog Occurrences. ER - TY - CONF AU - Bendfeld, Jörg AU - Balluff, Stefan AU - Liebing, B. ID - 6906 T2 - Wissenschaftliche Verhandlungen 2012 der Deutschen Physikalischen Gesellschaft, Berlin, März 2012 TI - Analyse ausgewählter Nebelereignisse für Offshore-Standorte ER - TY - CONF AU - Bendfeld, Jörg ID - 6907 T2 - Wissenschaftliche Verhandlungen 2012 der Deutschen Physikalischen Gesellschaft, Berlin, März 2012 TI - Vergleich der Sichtweitenmesstechnik für den Offshore-Einsatz. ER - TY - CONF AU - Bendfeld, Jörg AU - Tigges, Martin ID - 6908 T2 - World Renewable Energy Forum 2012, Denver, USA, Mai 2012 TI - Minimising Feed-in Fluctuaions of Offshore Wind Farms with Biogas fired Turbines ER - TY - CONF AU - Bendfeld, Jörg AU - Navratil, Karl ID - 6909 T2 - World Renewable Energy Forum 2012, Denver, USA, Mai 2012 TI - Empowering Offshore Windfarms by Reliable Measurements ER - TY - CONF AU - Bendfeld, Jörg ID - 6910 T2 - World Renewable Energy Forum 2012, Denver, USA, Mai 2012 TI - Cost effective Wave measurements for Ocean Energy. ER - TY - CONF AU - Bendfeld, Jörg AU - Balluff, Stefan ID - 6911 T2 - Proceedings of the DEWEK 2012 TI - Analysis of selected Offshore Fog Occurrences ER - TY - CONF AU - Bendfeld, Jörg ID - 6912 T2 - Proceedings of the DEWEK 2012 TI - Determination of the meteorological optical range in Offshore conditions. ER - TY - BOOK ED - Schmeisser, Wilhelm ED - Krimphove, Dieter ED - Zündorf, Horst ED - Toebe, Marc ED - Hannemann, Gerfried ID - 1643 TI - Finanzierung und Investition ER - TY - CHAP AU - Kempkes, Barbara AU - Meyer auf der Heide, Friedhelm ID - 16445 SN - 0302-9743 T2 - Experimental Algorithms TI - Continuous Local Strategies for Robotic Formation Problems ER - TY - CONF AU - Kempkes, Barbara AU - Kling, Peter AU - Meyer auf der Heide, Friedhelm ID - 16446 SN - 9781450312134 T2 - Proceedinbgs of the 24th ACM symposium on Parallelism in algorithms and architectures - SPAA '12 TI - Optimal and competitive runtime bounds for continuous, local gathering of mobile robots ER - TY - CHAP AU - Kempkes, Barbara AU - Meyer auf der Heide, Friedhelm ID - 16448 SN - 0302-9743 T2 - Algorithms for Sensor Systems TI - Local, Self-organizing Strategies for Robotic Formation Problems ER - TY - CHAP AU - Baier, Robert AU - Molo, Mirko Hessel-von ID - 16516 SN - 0302-9743 T2 - Large-Scale Scientific Computing TI - Newton’s Method and Secant Method for Set-Valued Mappings ER - TY - CHAP AU - Dellnitz, Michael AU - Dignath, Florian AU - Flaßkamp, Kathrin AU - Molo, Mirko Hessel-von AU - Krüger, Martin AU - Timmermann, Robert AU - Zheng, Qinghua ID - 16576 SN - 1612-3956 T2 - Mathematics in Industry TI - Modelling and Analysis of the Nonlinear Dynamics of the Transrapid and Its Guideway ER - TY - CONF AU - Flaskamp, K. AU - Ober-Blobaum, S. ID - 16589 SN - 9781457710964 T2 - 2012 American Control Conference (ACC) TI - Energy efficient control for mechanical systems based on inherent dynamical structures ER - TY - CONF AU - Flasskamp, Kathrin AU - Murphey, Todd AU - Ober-Blobaum, Sina ID - 16591 SN - 9781467320665 T2 - 2012 IEEE 51st IEEE Conference on Decision and Control (CDC) TI - Switching time optimization in discretized hybrid dynamical systems ER - TY - JOUR AU - Flaßkamp, Kathrin AU - Ober-Blöbaum, Sina AU - Kobilarov, Marin ID - 16592 JF - Journal of Nonlinear Science SN - 0938-8974 TI - Solving Optimal Control Problems by Exploiting Inherent Dynamical Systems Structures ER - TY - JOUR AU - Flaßkamp, Kathrin AU - Timmermann, Julia AU - Ober-Blöbaum, Sina AU - Dellnitz, Michael AU - Trächtler, Ansgar ID - 16593 JF - PAMM SN - 1617-7061 TI - Optimal Control on Stable Manifolds for a Double Pendulum ER - TY - JOUR AU - Froyland, Gary AU - Horenkamp, Christian AU - Rossi, Vincent AU - Santitissadeekorn, Naratip AU - Gupta, Alex Sen ID - 16603 JF - Ocean Modelling SN - 1463-5003 TI - Three-dimensional characterization and tracking of an Agulhas Ring ER - TY - JOUR AU - Meyer, A. ID - 16635 JF - IFAC Proceedings Volumes SN - 1474-6670 TI - Discontinuity Induced Bifurcations in Timed Continuous Petri Nets ER - TY - JOUR AU - Meyer, A. AU - Silva, M. ID - 16638 JF - IFAC Proceedings Volumes SN - 1474-6670 TI - Symmetry Reductions in Timed Continuous Petri Nets Under Infinite Server Semantics ER - TY - JOUR AU - Ringkamp, Maik AU - Ober-Blöbaum, Sina AU - Dellnitz, Michael AU - Schütze, Oliver ID - 16659 JF - Engineering Optimization SN - 0305-215X TI - Handling high-dimensional problems with multi-objective continuation methods via successive approximation of the tangent space ER - TY - CHAP AU - Dellnitz, Michael AU - Schütze, Oliver ID - 16681 SN - 9781461431275 T2 - Global Analysis of Nonlinear Dynamics TI - Multilevel Subdivision Techniques for Scalar Optimization Problems ER - TY - JOUR AU - Zanzottera, A. AU - Mingotti, G. AU - Castelli, R. AU - Dellnitz, M. ID - 16696 JF - Communications in Nonlinear Science and Numerical Simulation SN - 1007-5704 TI - Intersecting invariant manifolds in spatial restricted three-body problems: Design and optimization of Earth-to-halo transfers in the Sun–Earth–Moon scenario ER -