@misc{Mueller, author = {M{\"u}ller, David}, title = {Fair allocation of cost reductions for a scale-based product family in a hierarchically structured firm}, series = {International Journal of Product Development}, volume = {22}, journal = {International Journal of Product Development}, number = {1}, issn = {1741-8178}, doi = {10.1504/IJPD.2017.10006084}, pages = {1 -- 20}, language = {en} } @incollection{Mueller, author = {M{\"u}ller, David}, title = {Faire Kostenaufteilung von Kooperationen in der Forst- und Landwirtschaft}, series = {Controlling f{\"u}r kleine und mittlere Unternehmen}, booktitle = {Controlling f{\"u}r kleine und mittlere Unternehmen}, editor = {M{\"u}ller, David}, edition = {2. Auflage}, publisher = {De Gruyter-Oldenbourg}, address = {M{\"u}nchen}, isbn = {978-3-11-051487-2}, pages = {260 -- 285}, language = {de} } @incollection{Mueller, author = {M{\"u}ller, David}, title = {Analyse der Improvisation als Probleml{\"o}sungsalternative in KMU}, series = {Controlling f{\"u}r kleine und mittlere Unternehmen}, booktitle = {Controlling f{\"u}r kleine und mittlere Unternehmen}, editor = {M{\"u}ller, David}, edition = {2. Auflage}, publisher = {De Gruyter-Oldenbourg}, address = {M{\"u}nchen}, isbn = {978-3-11-051487-2}, doi = {10.1515/9783110517163-016}, pages = {393 -- 427}, language = {de} } @incollection{Mueller, author = {M{\"u}ller, David}, title = {The Usability and Suitability of Allocation Schemes for Corporate Cost Accounting}, series = {Game Theory in Management Accounting}, booktitle = {Game Theory in Management Accounting}, editor = {M{\"u}ller, David and Trost, Ralf}, publisher = {Springer}, address = {Cham [u.a.]}, isbn = {978-3-319-61602-5}, doi = {10.1007/978-3-319-61603-2_19}, pages = {401 -- 427}, language = {en} } @book{Mueller, author = {M{\"u}ller, David}, title = {Investitionsrechnung und Investitionscontrolling}, edition = {2. Auflage}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {978-3-662-57608-3}, doi = {10.1007/978-3-662-57609-0}, pages = {695}, abstract = {Investitionen als eine wesentliche Grundlage unternehmerischer T{\"a}tigkeit sind durch komplexe Entscheidungsprozesse gekennzeichnet. Zentrale Aufgabe des Investitionscontrollings ist deshalb die Unterst{\"u}tzung der Planung, Realisierung und Umsetzung dieser Entscheidungen. Damit diese Aufgabe bestm{\"o}glich erf{\"u}llt werden kann, wurde die vorliegende Auflage neu strukturiert. Die Eigenschaften des Investitionsprozesses und des Investitionscontrollings werden in den ersten beiden Kapiteln vorgestellt. Im Anschluss daran werden die Grundlagen der Entscheidungstheorie dargelegt. Diese werden {\"u}blicherweise als Einzelentscheidungen betrachtet, jedoch sind Investitionsentscheidungen in den seltensten F{\"a}llen Individualentscheidungen. In der Regel sind mehrere Mitarbeiter und Abteilungen in die Entscheidungsprozesse eingebunden. Es liegt nahe, neben den Individualentscheidungen auch kollektive Entscheidungen zu ber{\"u}cksichtigen. Aus diesem Grund werden Theorie und Praxis kollektiver Entscheidungen in einem eigenst{\"a}ndigen Kapitel beleuchtet. Neben der Entscheidungstheorie bildet die Investitionstheorie das klassische Fundament zur Unterst{\"u}tzung von Investitionsentscheidungen. Die grundlegenden Verfahren f{\"u}r Situationen unter Sicherheit werden ebenso vorgestellt wie die Verfahren f{\"u}r Entscheidungen unter Unsicherheit. Eine ganze Reihe von Investitionen wird nicht durch einen einzelnen Akteur (z.B. Unternehmen, Kostenstelle, Gemeinde) sondern als Gemeinschaftsinvestitionen durch mehrere Akteure realisiert. Die kooperative Spieltheorie ist in der Lage, f{\"u}r eine gerechte Nutzenaufteilung zu sorgen. Deshalb ist diesem Bereich ein umfangreiches Kapitel mit vielen Anwendungsbeispielen gewidmet.}, language = {de} } @misc{DornischSchradeXuetal., author = {Dornisch, Wolfgang and Schrade, David and Xu, Bai-Xiang and Keip, Marc-Andr{\´e} and M{\"u}ller, Ralf}, title = {Coupled phase field simulations of ferroelectric and ferromagnetic layers in multiferroic heterostructures}, series = {Archive of Applied Mechanics}, volume = {89}, journal = {Archive of Applied Mechanics}, number = {6}, issn = {0939-1533}, doi = {10.1007/s00419-018-1480-9}, pages = {1031 -- 1056}, abstract = {The combination of materials with either pronounced ferroelectric or ferromagnetic effect characterizes multiferroic heterostructures, whereby the different materials can be arranged in layers, columns or inclusions. The magnetization can be controlled by the application of electrical fields through a purely mechanical coupling at the interfaces between the different materials. Thus, a magneto-electric coupling effect is obtained. Within a continuum mechanics formulation, a phase field is used to describe the polarization and the magnetization in the ferroelectric and ferromagnetic layers, respectively. The coupling between polarization/magnetization and strains within the layers, in combination with the mechanical coupling at the sharp layer interfaces, yields the magneto-electric coupling within the heterostructure. The continuum formulations for both layers are discretized in order to make the differential equations amenable to a numerical solution with the finite element method. A state-of-the-art approach is used for the ferroelectric layer. The material behavior of the ferromagnetic layer is described by a continuum formulation from the literature, which is discretized using a newly proposed approach for the consistent interpolation of the magnetization vector. Four numerical examples are presented which show the applicability of the newly proposed approach for the ferromagnetic layer as well as the possibility to simulate magneto-electric coupling in multiferroic heterostructures.}, language = {en} } @misc{DornischSchradeXuetal., author = {Dornisch, Wolfgang and Schrade, David and Xu, Bai-Xiang and M{\"u}ller, Ralf}, title = {Coupling of phase field models for ferroelectric and ferromagnetic layers in multiferroic heterostructures}, series = {VII International Conference on Coupled Problems in Science and Engineering (Coupled Problems 2017)}, journal = {VII International Conference on Coupled Problems in Science and Engineering (Coupled Problems 2017)}, publisher = {CIMNE}, address = {Barcelona}, pages = {1}, abstract = {Heterostructures of ferroelectric and ferromagnetic layers are commonly used to obtain electromagnetic effects. The elastic coupling between the layers is widely acknowledged as the main mechanism responsible for the electro-magneto interaction. Within this contribution we study the coupling of ferroelectric and ferromagnetic layers with well-defined interfaces. The intention is to simulate the switching of the magnetization with the help of electric fields, which has been studied experimentally in [1]. Each layer is simulated by using mechanically coupled phase field modeling, whereby the approaches presented in [2] and [3] will be used. The strains in each layer depend on the direction of the polarization/magnetization. A mismatch of these strains will be compensated by local deformations at the interface as the coupling results from the coherent deformation at the interface. This leads to the possibility to alter the magnetization direction by changing the electric polarization and vice verse. Numerical simulations will illustrate the evolution of the ferroic microstructures with a focus on the strain coupling and the resulting interactions between layers.}, language = {en} } @misc{DornischSchradeWolfetal., author = {Dornisch, Wolfgang and Schrade, David and Wolf, Jana and M{\"u}ller, Ralf}, title = {Numerical methods for the modeling of the magnetization vector in multiferroic heterostructures}, series = {Proceedings in Applied Mathematics and Mechanics, Special Issue: 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Weimar 2017)}, volume = {17}, journal = {Proceedings in Applied Mathematics and Mechanics, Special Issue: 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Weimar 2017)}, number = {1}, publisher = {WILEY-VCH Verlag GmbH \& Co. KGaA}, address = {Weinheim}, issn = {1617-7061}, doi = {10.1002/pamm.201710221}, pages = {503 -- 504}, abstract = {Multiferroic heterostructures are commonly used to obtain electro-magnetic coupling effects. Thereby, the ferroelectric layer is used to control the magnetization in the ferromagnetic layer. The coupling between the layers is obtained by the mechanical coupling between the layers, which have well-defined interfaces. Within this contribution we use phase field models to define the polarization and magnetization in the ferroelectric and ferromagnetic layers, respectively. A coupling between polarization/magnetization and strains in each layer in combination with coherent deformations at the interface yields an electromagnetic coupling within the entire heterostructure. Numerical formulations for the interpolation of the polarization vector are well-defined in the literature. However, the establishment of a consistent numerical formulation for the ferromagnetic layer, where the length of the magnetization vector has to be constant, remains a difficult task. We propose a new numerical approach for the consistent treatment of the ferromagnetic layer and provide numerical simulations which illustrate the electromagnetic coupling effect.}, language = {en} } @misc{SchmidtAmmarDornischetal., author = {Schmidt, Simon David and Ammar, Kais and Dornisch, Wolfgang and Forest, Samuel and M{\"u}ller, Ralf}, title = {Phase field model for the martensitic transformation: comparison of the Voigt/Taylor and Khachaturyan approach}, series = {Continuum Mechanics and Thermodynamics}, volume = {33}, journal = {Continuum Mechanics and Thermodynamics}, number = {5}, issn = {0935-1175}, doi = {10.1007/s00161-021-01007-1}, pages = {2075 -- 2094}, language = {en} } @incollection{SagradovMueller, author = {Sagradov, Olga and M{\"u}ller, David}, title = {Verbesserung der Prognosequalit{\"a}t im Personalcontrolling}, series = {Controlling \& Innovation 2022, Gesundheitswesen}, booktitle = {Controlling \& Innovation 2022, Gesundheitswesen}, editor = {K{\"u}mpel, Thomas and Schlenkrich, Kay and Heupel, Thomas}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-36483-0}, issn = {2625-7114}, doi = {10.1007/978-3-658-36484-7}, pages = {95}, abstract = {F{\"u}r das langfristige Bestehen eines Unternehmens ist es notwendig, schnell und gezielt auf st{\"a}ndige Umweltver{\"a}nderungen zu reagieren. Die Reaktionsgeschwindigkeit auf zuk{\"u}nftige Ver{\"a}nderungen h{\"a}ngt von der F{\"a}higkeit des Unternehmens ab, m{\"o}gliche Szenarien f{\"u}r die Entwicklung der internen sowie externen Umgebung vorherzusagen. Die Controlling-Abteilungen, welche regul{\"a}r kurz-, mittel- und langfristige Prognosen vorbereiten m{\"u}ssen, erhalten heutzutage neue M{\"o}glichkeiten in der Auswahl der Forecast-Instrumentarien. Die Regressionsmodelle sowie Predictive Analytics und vor allem Machine Learning stellen keine neuen Analysemethoden dar, jedoch finden sie eher selten Anwendung in Controlling und Planung der Unternehmen. Einer der m{\"o}glichen Anwendungsbereiche der fortgeschrittenen Analytics im Unternehmenscontrolling stellt die Krankheitsanalyse bzw. -vorhersage dar. Mit dem Ausfall der Arbeitskr{\"a}fte sind abh{\"a}ngig von der Unternehmenst{\"a}tigkeit hohe Kosten verbunden. Steigende Aufmerksamkeit zum Thema Gesundheitsmanagement in Unternehmen fordert ebenso die Erstellung aussagekr{\"a}ftiger Analytics, um die entsprechenden Maßnahmen strategisch zu planen. Anhand von Daten eines ostdeutschen Großunternehmens beantworten die Autoren die Frage, wie sich die Prognosequalit{\"a}t des Krankheitsstandes mittels Regressionsmodellen und Predictive Analytics verbessern l{\"a}sst. Abschließend sind aus dem Beitrag der Nutzen und die Herausforderungen der Anwendung von fortgeschrittenen Prognosemethoden im Personalcontrolling zu entnehmen.}, language = {de} } @misc{Mueller, author = {M{\"u}ller, David}, title = {A reply to Ponte et al. (2016) supply chain collaboration: some comments on the Nucleolus of the beer game}, series = {Journal of Industrial Engineering and Management}, volume = {11}, journal = {Journal of Industrial Engineering and Management}, number = {3}, issn = {2013-8423}, doi = {10.3926/jiem.2430}, pages = {528 -- 534}, language = {en} } @book{Mueller, author = {M{\"u}ller, David}, title = {Investitionscontrolling: Entscheidungsfindung bei Investitionen II: Entscheidungstheorie}, edition = {3. Auflage}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-658-36596-7}, doi = {10.1007/978-3-658-36597-4}, pages = {649}, language = {de} } @incollection{Mueller, author = {M{\"u}ller, David}, title = {Pr{\"a}skriptive Theorie individueller Entscheidungen}, series = {Investitionscontrolling: Entscheidungsfindung bei Investitionen II: Entscheidungstheorie}, booktitle = {Investitionscontrolling: Entscheidungsfindung bei Investitionen II: Entscheidungstheorie}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-658-36596-7}, doi = {10.1007/978-3-658-36597-4_1}, pages = {3 -- 97}, language = {de} }