TY - JOUR AU - Widany, Kai-Uwe AU - Mahnken, Rolf ID - 24708 JF - PAMM SN - 1617-7061 TI - Approximation of the dual problem for error estimation in inelastic problems ER - TY - JOUR AU - Cheng, Chun AU - Mahnken, Rolf AU - Uhlmann, Eckart AU - Ivanov, Ivan Mitkov ID - 24702 JF - PAMM SN - 1617-7061 TI - Macroscopic and mesoscopic modeling based on the concept of generalized stresses for cutting simulation ER - TY - JOUR AU - Dammann, Christian AU - Mahnken, Rolf ID - 24701 JF - PAMM SN - 1617-7061 TI - A macroscopic consitutive model on induced anisotropy for polymers with weighting functions ER - TY - JOUR AB - Abstract The alignment of polymer chains is a well known microstructural evolution effect due to straining of polymers. This has a drastic influence on the macroscopic properties of the initially isotropic material. In this work, cold forming is performed at room temperature on a tensile testing machine. Polycarbonate films are examined in two loading phases. In the first phase, the specimen is loaded to induce anisotropy, and in the second, it is re-loaded, while the material direction is varied. The investigations are supported by an optical measurement system to gain knowledge about the inhomogeneous material behavior in the initial loading phase and about the anisotropic homogeneous behavior during the re-loading phase. Two dimensional strain contours are obtained from the test data. Additionally, we propose a method for approximation of the macroscopic true stress and compare the results with a common approach based on volume consistency. In the future, the test data will set a basis for parameter identification of constitutive equations taking into account a combination of inhomogenous and homogenous material behavior, exhibiting strain induced anisotropy. AU - Dammann, C. AU - Caylak, Ismail AU - Mahnken, Rolf ID - 24707 JF - International Polymer Processing SN - 2195-8602 TI - Experimental Investigation of PC-Films Using Optical Measurements ER - TY - JOUR AB - With self-reinforced thermoplastics, it is possible to produce composite systems that, unlike traditional fiber composite materials, do not contain any foreign fibers for reinforcement. Instead, thermoplastic fibers or tapes, for example made of PP or PE, are used in an identical matrix. This opens up a high potential for lightweight construction and, at the same time, very good recyclability. AU - Heim, Hans-Peter AU - Ries, Angela AU - Sch {\ "o} ppner, Volker AU - Wibbeke,, Andrea AU - Turek, Stefan AU - Damanik, Hogenrich AU - Mahnken, Rolf AU - Dammann, Christian AU - W {\ "u} nsch, Olaf AU - Al-Baldawi, Ammar AU - Rohde, Bj {\" o} rn AU - Br {\ "u} ckner-Foit, Angelika AU - Gausemeier, J {\" u} rgen AU - Gr { \ "a} {\ ss} ler, Iris AU - Petersen, Marcus ID - 28381 JF - Kunststoffe international} TI - Self-Reinforced Thermoplastic Composites - Composite Materials (Part 1) VL - 104 ER - TY - JOUR AU - Mahnken, Rolf AU - Schneidt, A. AU - Antretter, T. AU - Ehlenbröker, U. AU - Wolff, M. ID - 24700 JF - International Journal of Solids and Structures SN - 0020-7683 TI - Multi-scale modeling of bainitic phase transformation in multi-variant polycrystalline low alloy steels ER - TY - CONF AU - Dammann, C. AU - Mahnken, Rolf ID - 24706 TI - On the simulation of strain induced anisotropy for polymers ER - TY - JOUR AB - This study examines the determinants of financial firms' lobbying behaviour in the replacement process of International Financial Reporting Standard 4 (IFRS 4) Insurance Contracts. Based on comment letters in response to International Accounting Standards Board's (IASB) Exposure Draft 2010/8, we investigate firms' lobbying decisions and their long-term lobbying intensity. Using an international sample of publicly listed financial firms, we show that insurance companies and financially constrained IFRS firms are more likely to lobby the IASB. We also examine the long-term lobbying activity in the IFRS 4 replacement process during the years 2007–2010. We find that insurance companies and firms with dispersed ownership lobby more. Our results are stronger for IFRS firms compared to US generally accepted accounting principles users. Overall, we document intense lobbying by financial firms and present results that are largely consistent with economic consequences of anticipated accounting changes being the main driver of firms' lobbying behaviour. These results are in line with prior findings for non-financial firms. AU - Kosi, Urska AU - Reither, Antonia ID - 4037 IS - 1 JF - Accounting in Europe KW - standard setting KW - IASB KW - corporate lobbying KW - financial firms KW - IFRS 4 TI - Determinants of corporate participation in the IFRS 4 (insurance contracts) replacement process VL - 11 ER - TY - JOUR AU - Nordendorf, G. AU - Hoischen, A. AU - Schmidtke, J. AU - Wilkes, D. AU - Kitzerow, Heinz-Siegfried ID - 39696 IS - 11 JF - Polymers for Advanced Technologies KW - Polymers and Plastics SN - 1042-7147 TI - Polymer-stabilized blue phases: promising mesophases for a new generation of liquid crystal displays VL - 25 ER - TY - JOUR AU - Agra-Kooijman, Dena M. AU - Singh, Gautam AU - Lorenz, Alexander AU - Collings, Peter J. AU - Kitzerow, Heinz-Siegfried AU - Kumar, Satyendra ID - 39697 IS - 6 JF - Physical Review E KW - Industrial and Manufacturing Engineering KW - Metals and Alloys KW - Strategy and Management KW - Mechanical Engineering SN - 1539-3755 TI - Columnar molecular aggregation in the aqueous solutions of disodium cromoglycate VL - 89 ER - TY - JOUR AU - Mirzaei, Javad AU - Urbanski, Martin AU - Kitzerow, Heinz-Siegfried AU - Hegmann, Torsten ID - 39700 IS - 7 JF - ChemPhysChem KW - Physical and Theoretical Chemistry KW - Atomic and Molecular Physics KW - and Optics SN - 1439-4235 TI - Synthesis of Liquid Crystal Silane-Functionalized Gold Nanoparticles and Their Effects on the Optical and Electro-Optic Properties of a Structurally Related Nematic Liquid Crystal VL - 15 ER - TY - JOUR AU - Urbanski, Martin AU - Mirzaei, Javad AU - Hegmann, Torsten AU - Kitzerow, Heinz-Siegfried ID - 39699 IS - 7 JF - ChemPhysChem KW - Physical and Theoretical Chemistry KW - Atomic and Molecular Physics KW - and Optics SN - 1439-4235 TI - Nanoparticle Doping in Nematic Liquid Crystals: Distinction between Surface and Bulk Effects by Numerical Simulations VL - 15 ER - TY - JOUR AU - McGinn, Christine K. AU - Laderman, Laura I. AU - Zimmermann, Natalie AU - Kitzerow, Heinz-Siegfried AU - Collings, Peter J. ID - 39713 IS - 6 JF - Physical Review E KW - Industrial and Manufacturing Engineering KW - Metals and Alloys KW - Strategy and Management KW - Mechanical Engineering SN - 1539-3755 TI - Planar anchoring strength and pitch measurements in achiral and chiral chromonic liquid crystals using 90-degree twist cells VL - 88 ER - TY - JOUR AU - Kitzerow, Heinz-Siegfried ID - 39970 IS - 1 JF - Liquid Crystals Today KW - Materials Chemistry KW - Inorganic Chemistry KW - Condensed Matter Physics SN - 1358-314X TI - Alfred Saupe Prize 2013 Laudatio for Prof. Dr Gerd Heppke* VL - 23 ER - TY - CONF AU - Panhwar, M. F. AU - Sandel, D. AU - Woerdehoff, C. AU - Puntsri, K. AU - Hussin, S. AU - Noé, Reinhold ID - 38470 SN - 978-1-922107-21-3 T2 - 2014 OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE AND AUSTRALIAN CONFERENCE ON OPTICAL FIBRE TECHNOLOGY (OECC/ACOFT 2014) TI - PU-CMA-QAM BASED MIMO EQUALIZATION IN DSP-ENABLED PDM-16-QAM RECEIVERS ER - TY - CONF AU - Hussin, S. AU - Noé, Reinhold ID - 38474 SN - 2374-0140 T2 - 2014 IEEE PHOTONICS CONFERENCE (IPC) TI - Fiber nonlinearity Mitigation in CO-OFDM Systems using Dual Compensators ER - TY - CONF AU - Noé, Reinhold AU - Panhwar, M. F. AU - Woerdehoff, C. AU - Sandel, D. ID - 38465 SN - 2076-1465 T2 - 2014 PROCEEDINGS OF THE 22ND EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO) TI - REALTIME DIGITAL SIGNAL PROCESSING IN COHERENT OPTICAL PDM-QPSK AND PDM-16-QAM TRANSMISSION ER - TY - CONF AU - Koch, B. AU - Noé, Reinhold AU - Mirvoda, V. AU - Sandel, D. AU - Panhwar, M. F. ID - 38405 SN - 978-1-922107-21-3 T2 - 2014 OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE AND AUSTRALIAN CONFERENCE ON OPTICAL FIBRE TECHNOLOGY (OECC/ACOFT 2014) TI - SIMPLE POLARIZATION-DEPENDENT LOSS MEASUREMENT BASED ON POLARIZATION SCRAMBLING ER - TY - JOUR AU - Koch, Benjamin AU - Noé, Reinhold AU - Sandel, David AU - Mirvoda, Vitali ID - 38401 IS - 7 JF - OPTICS EXPRESS SN - 1094-4087 TI - Versatile endless optical polarization controller/tracker/demultiplexer VL - 22 ER - TY - CONF AU - Hussin, S. AU - Noé, Reinhold AU - Panhwar, M. F. ID - 38392 SN - 978-1-922107-21-3 T2 - 2014 OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE AND AUSTRALIAN CONFERENCE ON OPTICAL FIBRE TECHNOLOGY (OECC/ACOFT 2014) TI - IMPROVEMENT OF RF-PILOT PHASE NOISE COMPENSATION FOR CO-OFDM TRANSMISSION SYSTEMS VIA COMMON PHASE ERROR EQUALIZER ER -