TY - CHAP A1 - Pietsch, Wolfram T1 - A framework for strategic positioning of IT-products T2 - Software business : from physical products to software services and solutions : 4th International Conference on Software Business, ICSOB 2013; Potsdam; Germany; 11 June 2013 through 14 June 2013. (Lecture notes in business information processing ; 150) N2 - IT Products are viewed and managed differently depending on the perspectives and the stage within the life cycle. A model is presented that integrates different perspectives and stages serving as an aid for the analysis of business models and focused positioning of IT-products. Four generic business models are analysed with regard to the product management function in general and the positioning field for IT-products specifically: off-the-shelf (license), license plus service, project, and system service (incl. cloud computing). KW - Strategic Business Planning KW - IT Products KW - Business Models KW - Product Management Y1 - 2013 U6 - https://doi.org/10.1007/978-3-642-39336-5_11 SP - 102 EP - 116 PB - Springer CY - Berlin ER - TY - CHAP A1 - Pietsch, Wolfram T1 - A framework of quality function deployment T2 - Quality management / eds.: M. Ross ... (Software quality management ; 3,1) Y1 - 1995 SN - 1-85312-309-9 SP - 419 EP - 428 PB - Computational Mechanics Publ. CY - Southhampton ER - TY - JOUR A1 - Pietsch, Wolfram T1 - Augmenting voice of the customer analysis by analysis of belief JF - QFD-Forum Y1 - 2015 SN - 1431-6951 IS - 30 SP - 1 EP - 5 ER - TY - JOUR A1 - Palmer, J. W. A1 - Lindemann, Markus T1 - Business models and market mechanisms : evaluating efficiency in consumer electronic markets JF - Data base and advanced information systems. Bd. 34 (2003), H. 2 Y1 - 2003 SN - 0105-9912 SP - 23 EP - 38 ER - TY - JOUR A1 - Möhren, Felix A1 - Bergmann, Ole A1 - Janser, Frank A1 - Braun, Carsten T1 - Assessment of structural mechanical effects related to torsional deformations of propellers JF - CEAS Aeronautical Journal N2 - Lifting propellers are of increasing interest for Advanced Air Mobility. All propellers and rotors are initially twisted beams, showing significant extension–twist coupling and centrifugal twisting. Torsional deformations severely impact aerodynamic performance. This paper presents a novel approach to assess different reasons for torsional deformations. A reduced-order model runs large parameter sweeps with algebraic formulations and numerical solution procedures. Generic beams represent three different propeller types for General Aviation, Commercial Aviation, and Advanced Air Mobility. Simulations include solid and hollow cross-sections made of aluminum, steel, and carbon fiber-reinforced polymer. The investigation shows that centrifugal twisting moments depend on both the elastic and initial twist. The determination of the centrifugal twisting moment solely based on the initial twist suffers from errors exceeding 5% in some cases. The nonlinear parts of the torsional rigidity do not significantly impact the overall torsional rigidity for the investigated propeller types. The extension–twist coupling related to the initial and elastic twist in combination with tension forces significantly impacts the net cross-sectional torsional loads. While the increase in torsional stiffness due to initial twist contributes to the overall stiffness for General and Commercial Aviation propellers, its contribution to the lift propeller’s stiffness is limited. The paper closes with the presentation of approximations for each effect identified as significant. Numerical evaluations are necessary to determine each effect for inhomogeneous cross-sections made of anisotropic material. KW - Lifting propeller KW - Extension–twist coupling KW - Trapeze effect KW - Centrifugal twisting moment Y1 - 2024 U6 - https://doi.org/10.1007/s13272-024-00737-7 SN - 1869-5590 (eISSN) SN - 1869-5582 N1 - Corresponding author: Felix Möhren PB - Springer CY - Wien ER - TY - JOUR A1 - Mueller, Tobias A1 - Segin, Alexander A1 - Weigand, Christoph A1 - Schmitt, Robert H. T1 - Feature selection for measurement models JF - International journal of quality & reliability management N2 - Purpose In the determination of the measurement uncertainty, the GUM procedure requires the building of a measurement model that establishes a functional relationship between the measurand and all influencing quantities. Since the effort of modelling as well as quantifying the measurement uncertainties depend on the number of influencing quantities considered, the aim of this study is to determine relevant influencing quantities and to remove irrelevant ones from the dataset. Design/methodology/approach In this work, it was investigated whether the effort of modelling for the determination of measurement uncertainty can be reduced by the use of feature selection (FS) methods. For this purpose, 9 different FS methods were tested on 16 artificial test datasets, whose properties (number of data points, number of features, complexity, features with low influence and redundant features) were varied via a design of experiments. Findings Based on a success metric, the stability, universality and complexity of the method, two FS methods could be identified that reliably identify relevant and irrelevant influencing quantities for a measurement model. Originality/value For the first time, FS methods were applied to datasets with properties of classical measurement processes. The simulation-based results serve as a basis for further research in the field of FS for measurement models. The identified algorithms will be applied to real measurement processes in the future. KW - Feature selection KW - Modelling KW - Measurement models KW - Measurement uncertainty Y1 - 2022 U6 - https://doi.org/10.1108/IJQRM-07-2021-0245 SN - 0265-671X IS - Vol. ahead-of-print, No. ahead-of-print. PB - Emerald Group Publishing Limited CY - Bingley ER - TY - JOUR A1 - Moosdorf, Andreas T1 - It’s not just the Talent, it’s the Knowledge Transfer Method JF - GC Ticker Y1 - 2009 IS - 1 SP - 16 EP - 16 ER - TY - BOOK A1 - Moosdorf, Andreas T1 - The determinants of international knowledge transfer effectiveness - conceptual advances and empirical verification Y1 - 2008 N1 - The University of Leeds > Leeds University Business School. Thesis (PhD) ER - TY - JOUR A1 - Mischke, Winfried T1 - Kurzkommentierung der §§ 433, 436, 446 - 453, 474 - 479 BGB JF - LexisNexis : Elektronische Ressource / Recht (2009) Y1 - 2009 ER - TY - JOUR A1 - Mischke, Winfried T1 - Die Garantie im Kaufrecht JF - Betriebs-Berater. 50 (1995), H. 22 Y1 - 1995 SN - 0340-7918 SP - 1093 EP - 1096 ER - TY - BOOK A1 - Maercker, Gisela T1 - Efficient estimation in AR models with ARCH errors Y1 - 1995 N1 - Bericht // Institute für Mathematik, Technische Universität Braunschweig ; 95,10 PB - Institute für Mathematik, Techn. Univ. CY - Braunschweig ER - TY - BOOK A1 - Maercker, Gisela T1 - Statistical inference in conditional heteroskedastic autoregressive models Y1 - 1997 SN - 3-8265-2486-1 N1 - Berichte aus der Mathematik ; Zugl.: Braunschweig, Techn. Univ., Diss., 1996 PB - Shaker CY - Aachen ER - TY - BOOK A1 - Mackenstein, Hans A1 - Marsch, Steve T1 - The international relations of the European Union / by Steve Marsh and Hans Mackenstein Y1 - 2005 SN - 0-582-47293-8 PB - Pearson Education CY - Harlow [u.a.] ER - TY - JOUR A1 - Mackenstein, Hans A1 - Jeffery, Charlie T1 - Financial equalization in the 1990s : on the road back to Karlsruhe / Hans Mackenstein and Charlie Jeffery JF - Recasting German federalism : the legacies of unification Y1 - 1999 SN - 1-85567-579-x SP - 155 EP - 176 PB - Pinter CY - London ER - TY - JOUR A1 - Mackenstein, Hans T1 - Book Reviews - Samardzic, Slobodan and Thomas Fleiner, Federalismus und Minderheitenproblem in Multiethnischen Gemeinschaften JF - Regional and federal studies. 8 (1998), H. 3 Y1 - 1998 SN - 1359-7566 SP - 138 EP - 138 ER - TY - JOUR A1 - Mackenstein, Hans T1 - Book Reviews - Morass, Michael; Regionale Interessen auf dem Weg in die Europäische Union: Strukturelle Entwicklung und Perspektiven der Interessenvermittlung Österreichischer und deutscher Ländesakteure im Rahmen der Europäischen Integration JF - Regional and federal studies. 8 (1998), H. 1 Y1 - 1998 SN - 1359-7566 SP - 227 EP - 227 ER - TY - BOOK A1 - Mackenstein, Hans T1 - The European system of central banks in relation to the Deutsche Bundesbank : a comparative study of the two institutions and their political and social environment / by Hans Wilhelm Mackenstein Y1 - 1992 N1 - Birmingham, Univ., Diss., 1992 CY - Birmingham ER - TY - JOUR A1 - Mackenstein, Hans T1 - The role of Germany, Japan and the United States on the ECU-bond markets / Hans Wilhelm Mackenstein JF - De pecunia. 3 (1991), H. 1 Y1 - 1991 SN - 1015-6283 SP - 113 EP - 150 ER - TY - JOUR A1 - Mackenstein, Hans T1 - Books Reviewed - European Democratization since 1800 edited by J. Garrard, V. Tolz and R. White JF - Democratization. 7 (2000), H. 4 Y1 - 2000 SN - 1351-0347 SP - 219 EP - 219 ER - TY - JOUR A1 - Mackenstein, Hans T1 - Book Reviews - Cowie, Harry, Private Partnership and Public Networks in Europe JF - Regional and federal studies. 9 (1999), H. 2 Y1 - 1999 SN - 1359-7566 SP - 111 EP - 111 ER -