TY - THES AU - Müller, Thomas ID - 25869 TI - Integration von Verlässlichkeitsanalysen und -konzepten innerhalb der Entwicklungsmethodik mechatronischer Systeme VL - 256 ER - TY - THES AU - Mense, Mario ID - 25870 TI - On Fault-Tolerant Data Placement in Storage Networks VL - 260 ER - TY - THES AU - Altemeier, Simon ID - 25871 TI - Kostenoptimale Kapazitätsabstimmung in einer getakteten Variantenfließlinie unter expliziter Berücksichtigung des Unterstützereinsatzes und unterschiedlicher Planungszeiträume VL - 262 ER - TY - THES AU - Mahajan, Kiran ID - 25872 TI - A combined simulation and optimization based method for predictive-reactive scheduling of flexible production systems subject to execution exceptions VL - 263 ER - TY - BOOK AU - Christiansen, Sven-Kelana ID - 25873 TI - Methode zur Klassifikation und Entwicklung reifegradbasierter leistungsbewertungs- und Leistungssteigerungsmodelle VL - 264 ER - TY - BOOK AU - Gausemeier, Jürgen ID - 25874 TI - 5. Symposium für Vorausschau und Technologieplanung VL - 265 ER - TY - BOOK AU - Kaulmann, Tim ID - 25875 TI - Ressourceneffiziente Realisierung Pulscodierter Neuronaler Netze VL - 266 ER - TY - BOOK AU - Wehrmeister, Marco A. ID - 25876 TI - An Aspect-Oriented Model-Driven Engineering Approach for Distributes Embedded Real-Time Systems VL - 267 ER - TY - BOOK AU - Danne, Christoph ID - 25877 TI - Assessing the Cost of Assortment Complexity in Consumer Goods Supply Chains by Reconfiguration of Inventory and Production Planning Parameters in Response to Assortment Changes VL - 268 ER - TY - BOOK AU - Stoll, Karsten ID - 25879 TI - Planung und Konzipierung von Marktleistungen VL - 270 ER - TY - JOUR AU - Betz, Stefan ID - 2604 JF - Der Betriebswirt TI - Standortwahl als Entscheidungsproblem des Logistikcontrollings VL - 50 ER - TY - JOUR AB - In this paper, we consider a model for precipitation experiments based on the population balance equation. The study revealed a high sensitivity of the system with respect to the modeling of intrinsic parameters, motivating a comprehensive validation of the estimates. In the forward simulation the impact of the influencing parameters including surface energy, nucleus size and distribution is investigated. Subsequently we construct a simplified model of the precipitation process in such a way that it is orbitally flat in terms of control theory, which enables the inverse calculation of the parameters. The numerical results of the inverse simulation for the interfacial energy have been compared to a physical model. The possibility of solving the inverse problem provides a promising way of estimating hardly measurable quantities for more complex molecules. AU - Vassilev, Vassil AU - Gröschel, Michael AU - Schmid, Hans-Joachim AU - Peukert, Wolfgang AU - Leugering, Günter ID - 26137 IS - 6 JF - Chemical Engineering Science SN - 0009-2509 TI - Interfacial energy estimation in a precipitation reaction using the flatness based control of the moment trajectories VL - 65 ER - TY - JOUR AB - In this work, a new model for the simulation of nanostructured aggregates by simultaneous coagulation, sintering and surface growth is presented. Coagulation is treated as cluster–cluster agglomeration along the line connecting the center of mass of both agglomerates and is implemented using a Monte Carlo algorithm. Sintering is modeled as successive overlapping of spheres which cause reduction in the surface area based on a rate law for surface reduction. Surface growth is modeled as an increase in primary particle diameter, e.g. as a result of surface reactions. The evolved aggregates are analyzed by calculating their fractal dimension, radius of gyration, mobility diameter and mobility shape factor. It is found that the aggregates structure tends to be more compact when introducing the surface growth in shorter time comparing to the coagulation-sintering step only. Fractal dimension and the mobility shape factor of the resulting aggregates are correlated to an effective dimensionless time that combines the characteristic times of these three fundamental mechanisms. It is shown that the mobility diameter in the free molecular regime is not proportional to the radius of gyration. A power law relation that correlates the aggregates projected area and the equivalent number of primary particles is found to be in a very good agreement with estimates published in literature. AU - Al Zaitone, Belal AU - Schmid, Hans-Joachim AU - Peukert, Wolfgang ID - 26138 IS - 11 JF - Journal of Aerosol Science SN - 0021-8502 TI - Simulation of structure and mobility of aggregates formed by simultaneous coagulation, sintering and surface growth VL - 40 ER - TY - JOUR AB - The study presents first experimental results of the transfer of magnetite nanoparticles from an aqueous to a second non-miscible non-aqueous liquid phase. The transfer is based on the adsorption of macromolecular surfactants onto the particle surface at the liquid–liquid interface. For a successful direct phase transfer, it is essential to have cations, like ammonium ions, present in the aqueous phase as well as a threshold concentration of surfactant in the organic liquid phase. While penetrating the liquid–liquid interface, the particles are covered with the surfactant and therefore a partial de-agglomeration is initiated. Based on literature and experimental data a mechanism of surfactant adsorption is proposed. The competing adsorption of the surfactant molecules at the liquid–liquid interface leads to the formation of emulsions and therefore to a hindrance for particles passing the interface. Nevertheless a high efficiency of 100% yield can be reached using optimized process parameters for the phase transfer process. AU - Machunsky, Stefanie AU - Grimm, Philipp AU - Schmid, Hans-Joachim AU - Peuker, Urs A. ID - 26139 IS - 1-3 JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects SN - 0927-7757 TI - Liquid–liquid phase transfer of magnetite nanoparticles VL - 348 ER - TY - JOUR AB - The viscous-flow sintering of different agglomerate particle morphologies is studied by three-dimensional computer simulations based on the concept of fractional volume of fluid. For a fundamental understanding of particle sintering characteristics, the neck growth kinetics in agglomerate chains and in doublets consisting of differently sized primary particles is investigated. Results show that different sintering contacts in agglomerates even during the first stages are not completely independent from each other, even though differences are small. The neck growth kinetics of differently sized primary particles is determined by the smaller one up to a size difference by a factor of approximately 2, whereas for larger size differences, the kinetics becomes faster. In particular, the agglomerate sintering kinetics is investigated for particle chains of different lengths and for different particle morphologies each having ten primary particles and nine initial sintering contacts. For agglomerate chains, the kinetics approximately can be normalized by using the radius of the fully coalesced sphere. In general, different agglomerate morphologies show equal kinetics during the first sintering stages, whereas during advanced stages, compact morphologies show significantly faster sintering progress than more open morphologies. Hence, the overall kinetics cannot be described by simply using constant morphology correction factors such as fractal dimension or mean coordination number which are used in common sintering models. However, for the first stages of viscous-flow agglomerate sintering, which are the most important for many particle processes, a sintering equation is presented. Although we use agglomerates consisting of spherical primary particles, our methodology can be applied to other aggregate geometries as well. AU - Kirchhof, M. J. AU - Schmid, Hans-Joachim AU - Peukert, W. ID - 26140 IS - 2 JF - Physical Review E SN - 1539-3755 TI - Three-dimensional simulation of viscous-flow agglomerate sintering VL - 80 ER - TY - THES AU - Huber, Daniel ID - 26183 TI - Geregelte Vereinfachung hierarchischer Partitionen von Modellen in der Materialflusssimulation VL - 277 ER - TY - JOUR AU - Sperling, Jan AU - Vogel, W. ID - 26360 JF - Physical Review A SN - 1050-2947 TI - Verifying continuous-variable entanglement in finite spaces ER - TY - JOUR AU - Sperling, Jan AU - Vogel, W. ID - 26361 JF - Physical Review A SN - 1050-2947 TI - Representation of entanglement by negative quasiprobabilities ER - TY - JOUR AU - Sperling, Jan AU - Vogel, W. ID - 26362 JF - Physical Review A SN - 1050-2947 TI - Necessary and sufficient conditions for bipartite entanglement ER - TY - JOUR AU - Dzienziol, J. AU - Kundisch, Dennis ID - 2649 IS - 4 JF - Kredit und Kapital TI - Optimale Darlehensbündel in der privaten Immobilienfinanzierung VL - 42 ER - TY - JOUR AU - Kundisch, Dennis AU - Klein, C. ID - 2650 IS - 3 JF - Zeitschrift für Bankrecht und Bankwirtschaft TI - Zur Preissetzung verschiedener Emittenten bei Indexzertifikaten auf den DAX VL - 21 ER - TY - JOUR AU - Kundisch, Dennis AU - Klein, C. ID - 2651 IS - 22 JF - Der Betrieb TI - Der Tracking Error von indexnachbildenden Instrumenten auf den DAX - eine empirische Analyse des ETFs DAX EX sowie zehn Indexzertifikaten VL - 62 ER - TY - BOOK ED - Hellmich, Frank ED - Wernke, Stephan ID - 26728 TI - Lernstrategien im Grundschulalter. Konzepte, Befunde und praktische Implikationen ER - TY - CHAP AU - Höntges, Jens AU - Günther, Frederike AU - Hellmich, Frank ED - Neubrand , Michael ID - 26760 T2 - Beiträge zum Mathematikunterricht 2009 TI - Diagnose mathematischer Basiskompetenzen im Kindergarten ER - TY - CHAP AU - Hellmich, Frank AU - Läsche, Johannes ED - Röhner, Charlotte ED - Henrichwark, Claudia ED - Hopf, Michaela ID - 26761 T2 - Europäisierung der Bildung. Konsequenzen und Herausforderungen für die Grundschulpädagogik TI - Lesestrategien und Lesekompetenzen bei Kindern am Ende der Grundschulzeit ER - TY - JOUR AU - Hellmich, Frank ID - 26762 JF - MNU-PRIMAr TI - Mathematische Basiskompetenzen im Vorschulalter erkennen und deuten VL - 1 ER - TY - CHAP AU - Wernke, Stephan AU - Hellmich, Frank ED - Wernke, Stephan ED - Hellmich, Frank ID - 26763 T2 - Lernstrategien im Grundschulalter. Konzepte, Befunde und praktische Implikationen TI - Was sind Lernstrategien ... und warum sind sie wichtig? ER - TY - CHAP AU - Hellmich, Frank AU - Höntges, Jens ED - Hellmich, Frank ED - Wernke, Stephan ID - 26764 T2 - Lernstrategien im Grundschulalter. Konzepte, Befunde und praktische Implikationen TI - Möglichkeiten der Erfassung von Lesestrategien im Leseunterricht der Grundschule ER - TY - JOUR AU - Shi, Lijie AU - Wudy, Stefan A AU - Buyken, Anette AU - Hartmann, Michaela F AU - Remer, Thomas ID - 26893 JF - The American Journal of Clinical Nutrition SN - 0002-9165 TI - Body fat and animal protein intakes are associated with adrenal androgen secretion in children ER - TY - JOUR AU - Karaolis-Danckert, Nadina AU - Buyken, Anette AU - Sonntag, Antje AU - Kroke, Anja ID - 26894 JF - The American Journal of Clinical Nutrition SN - 0002-9165 TI - Birth and early life influences on the timing of puberty onset: results from the DONALD (DOrtmund Nutritional and Anthropometric Longitudinally Designed) Study ER - TY - JOUR AU - Cheng, Guo AU - Gerlach, Steffi AU - Libuda, Lars AU - Kranz, Sibylle AU - Günther, Anke L. B. AU - Karaolis-Danckert, Nadina AU - Kroke, Anja AU - Buyken, Anette ID - 26895 JF - The Journal of Nutrition SN - 1541-6100 TI - Diet Quality in Childhood Is Prospectively Associated with the Timing of Puberty but Not with Body Composition at Puberty Onset ER - TY - JOUR AU - Günther, Anke L. B. AU - Karaolis-Danckert, Nadina AU - Kroke, Anja AU - Remer, Thomas AU - Buyken, Anette ID - 26896 JF - The Journal of Nutrition SN - 1541-6100 TI - Dietary Protein Intake throughout Childhood Is Associated with the Timing of Puberty ER - TY - JOUR AU - Wehrheim, Heike AU - Wonisch, Daniel ID - 3199 IS - 2 JF - Electr. Notes Theor. Comput. Sci. TI - Compositional {CSP} Traces Refinement Checking ER - TY - JOUR AU - Ruhroth, Thomas AU - Wehrheim, Heike ID - 3200 JF - Electr. Notes Theor. Comput. Sci. TI - Static Class Elements for Object-Z ER - TY - CONF AU - Ruhroth, Thomas AU - Voigt, Hendrik AU - Wehrheim, Heike ID - 3201 T2 - 35th Euromicro Conference on Software Engineering and Advanced Applications, {SEAA} 2009, Patras, Greece, August 27-29, 2009, Proceedings TI - Measure, Diagnose, Refactor: {A} Formal Quality Cycle for Software Models ER - TY - GEN ED - Leuschel, Michael ED - Wehrheim, Heike ID - 3202 SN - 978-3-642-00254-0 TI - Integrated Formal Methods, 7th International Conference, {IFM} 2009, D{\"{u}}sseldorf, Germany, February 16-19, 2009. Proceedings ER - TY - CONF AU - Becker, Jörg AU - Beverungen, Daniel AU - Blinn, Nadine AU - Knackstedt, Ralf AU - Nüttgens, Markus AU - Thomas, Oliver AU - Fellmann, Michael ID - 3473 T2 - 29th International RESER Conference TI - Productivity management for customer solutions --- Towards a performance management system for efficient service value networks ER - TY - CONF AU - Becker, Jörg AU - Beverungen, Daniel AU - Knackstedt, Ralf AU - Matzner, Martin ID - 3474 SN - 1530-1605 T2 - Proceedings of the 42th Hawaii International Conference on System Sciences TI - Configurative Service Engineering --- A Rule-Based Configuration Approach for Versatile Service Processes in Corrective Maintenance ER - TY - CONF AU - Becker, Jörg AU - Beverungen, Daniel AU - Knackstedt, Ralf AU - Matzner, Martin AU - Müller, Oliver AU - Pöppelbuß, Jens ID - 3475 T2 - Americas Conference on Information Systems TI - A Framework for Design Research in the Service Science Discipline ER - TY - CONF AU - Becker, Jörg AU - Beverungen, Daniel AU - Matzner, Martin AU - Müller, Oliver ED - Alt, Rainer ED - Fähnrich, Klaus-Peter ED - Franczyk, Bogdan ID - 3476 SN - 978-3-8325-2169-1 T2 - Proceedings of the First International Symposium on Services Science (ISSS'09) TI - Design Requirements to Support Information Flows for Providing Customer Solutions: A Case Study in the Mechanical Engineering Sector ER - TY - JOUR AU - Becker, Jörg AU - Beverungen, Daniel AU - Knackstedt, Ralf AU - Müller, Oliver ID - 3506 IS - 1 JF - Enterprise Modelling and Information Systems Architectures TI - Model-Based Decision Support for the Customer-Specific Configuration of Value Bundles ER - TY - CHAP AU - Harteis, Christian ED - McLean, Rupert ED - Wilson, David ID - 3617 T2 - International handbook of education for the changing World of Work TI - Professional learning and TVET: challenges and perspectives for teachers and instructors ER - TY - CHAP AU - Mulder, Regina H AU - Harteis, Christian AU - Gruber, Hans ED - Zlatkin-Troitschanskaja, Olga ED - Beck, Klaus ED - Sembill, Detlef ED - Nickolaus, Reinhard ED - Mulder, Regina ID - 3650 T2 - Lehrprofessionalität - Bedingungen, Genese, Wirkungen und Messung TI - Lernen von Lehrenden im Arbeitsprozess ER - TY - JOUR AB - Erbschaftsteuer | Inheritance tax | Steuerreform | Tax reform | Steuerwirkung | Tax effects | Steuereinnahmen | Tax revenue | Mikrodaten | Microdata | Simulation | Deutschland | Germany AU - Maiterth, Ralf AU - Houben, Henriette AU - Broekelschen, Wiebke AU - Müller, Jens AU - Sureth-Sloane, Caren ID - 3693 JF - Statistik und Wissenschaft KW - Erbschaftsteuer | Inheritance tax | Steuerreform | Tax reform | Steuerwirkung | Tax effects | Steuereinnahmen | Tax revenue | Mikrodaten | Microdata | Simulation TI - Mikroanalytische Begleitung der Steuerpolitik am Beispiel der Erbschaftsteuerreform ER - TY - CHAP AU - Heid, Helmut AU - Harteis, Christian ED - Tippelt, Rudolf ED - Schmidt, Bernd ID - 3713 T2 - Handbuch Bildungsforschung TI - Wirtschaft und Betrieb ER - TY - GEN AU - Schröer, Carsten ID - 2880 TI - Hierarchisches Clustering mit minimalen Cluster-Durchmessern ER - TY - CONF AU - Schulz-Zander, Renate AU - Eickelmann, Birgit ED - Santos, Elder R. ED - Miletto, Evandro M. ED - Turcsanyi-Szabo, Marta ID - 28922 T2 - Proceedings – 9th WCCE. IFIP World Conference on Computers in Education TI - Teacher Collaboration Concerning ICT-Use and its Essential Conditions ER - TY - GEN AU - Schulz-Zander, Renate AU - Eickelmann, Birgit ID - 28926 TI - E-teaching plus. Die webbasierte Lernumgebung für situiertes Lernen mit Unterrichtsvideos ER - TY - CHAP AU - Schulz-Zander, Renate AU - Eickelmann, Birgit ED - Plomp, Tjeerd ED - Anderson, Ronald E. ED - Law, Nancy ED - Quale, Andreas ID - 28927 T2 - Cross-national Information and Communication Technology. Policies and Practices in Education TI - National Policies and Practices on ICT in Education: Germany ER - TY - GEN AU - Liske, Gennadij ID - 2896 TI - Analyse und Evaluation eines identitätsbasierten Signcryption-Verfahrens ER -