TY  - CHAP
A1  - Abele, Daniel
A1  - Kleefeld, Andreas
ED  - Constanda, Christian
T1  - New Numerical Results for the Optimization of Neumann Eigenvalues
T2  - Computational and Analytic Methods in Science and Engineering
N2  - We present new numerical results for shape optimization problems of interior Neumann eigenvalues. This field is not well understood from a theoretical standpoint. The existence of shape maximizers is not proven beyond the first two eigenvalues, so we study the problem numerically. We describe a method to compute the eigenvalues for a given shape that combines the boundary element method with an algorithm for nonlinear eigenvalues. As numerical optimization requires many such evaluations, we put a focus on the efficiency of the method and the implemented routine. The method is well suited for parallelization. Using the resulting fast routines and a specialized parametrization of the shapes, we found improved maxima for several eigenvalues.
Y1  - 2020
SN  - 978-3-030-48185-8 (Print)
SN  - 978-3-030-48186-5 (Online)
U6  - https://doi.org/10.1007/978-3-030-48186-5_1
SP  - 1
EP  - 20
PB  - Birkhäuser
CY  - Cham
ER  - 
TY  - CHAP
A1  - Kleefeld, Andreas
ED  - Constanda, Christian
T1  - Numerical calculation of interior transmission eigenvalues with mixed boundary conditions
T2  - Computational and Analytic Methods in Science and Engineering
N2  - Interior transmission eigenvalue problems for the Helmholtz equation play an important role in inverse wave scattering. Some distribution properties of those eigenvalues in the complex plane are reviewed. Further, a new scattering model for the interior transmission eigenvalue problem with mixed boundary conditions is described and an efficient algorithm for computing the interior transmission eigenvalues is proposed. Finally, extensive numerical results for a variety of two-dimensional scatterers are presented to show the validity of the proposed scheme.
Y1  - 2020
SN  - 978-3-030-48185-8 (Hardcover)
U6  - https://doi.org/10.1007/978-3-030-48186-5_9
SP  - 173
EP  - 195
PB  - Birkhäuser
CY  - Cham
ER  - 
TY  - CHAP
A1  - Meskouris, Konstantin
A1  - Butenweg, Christoph
A1  - Kalker, Ines
A1  - Mistler, Michael
T1  - Numerical simulation of historic masonry buildings
T2  - Antike Erdbeben im alpinen und zirkumalpinen Raum : Befunde und Probleme in archäologischer, historischer und seismologischer Sicht ; Beiträge des Interdisziplinären Workshops Schloss Hohenkammer, 14./15. Mai 2004 = Earthquakes in antiquity in the alpine and circum-alpine region / Gerhard H. Waldherr ; Anselm Smolka (Hrsg.) (Geographica Historica ; 24)
Y1  - 2007
SN  - 978-3-515-09030-8 ; 3-515-09030-4
SP  - 171
EP  - 189
PB  - Franz Steiner Verlag
CY  - Stuttgart
ER  - 
TY  - CHAP
A1  - Mertens, Josef
A1  - Becker, K.
ED  - Ballmann, Josef
T1  - Numerical solution of flow equations : an aircraft designer's view
T2  - Nonlinear hyperbolic equations - theory, computation methods, and applications : proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen, FRG, March 14 to 18, 1988. - (Notes on Numerical Fluid Mechanics ; 24)
N2  - Today the most accurate and cost effective industrial codes used in aircraft design are based on the full potential equation coupled with boundary layer equations. However, these are not capable to solve complicated three-dimensional problems of vortical flows and shocks. On the other hand Euler and Navier-Stokes codes are too expensive and not accurate enough for design purposes, especially in regard of drag and interference prediction. The reasons for these deficiencies are investigated and a way to overcome them by future developments is demonstrated.
Y1  - 1989
SN  - 3-528-08098-1
U6  - https://doi.org/10.1007/978-3-322-87869-4_41
N1  - International Conference on Nonlinear Hyperbolic Problems <3, 1988, Aachen>
SP  - 403
EP  - 412
PB  - Vieweg
CY  - Braunschweig
ER  - 
TY  - CHAP
A1  - Braun, Carsten
A1  - Boucke, Alexander
A1  - Ballmann, Josef
T1  - Numerical study of the influence of dynamic pressure and deflected ailerons on the deformation of a high speed wing model
T2  - High performance computing in science and engineering '04. Transactions of the High Performance Computing Center Stuttgart (HLRS) 2004 /  Eds.: Egon Krause ...
Y1  - 2005
SN  - 3-540-22943-4
SP  - 225
EP  - 236
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Kotliar, Konstantin
ED  - Pallikaris, I.
ED  - Tsilimbaris, M. K.
ED  - Dastiridou, A. I.
T1  - Ocular rigidity: clinical approach
T2  - Ocular Rigidity, Biomechanics and Hydrodynamics of the Eye
N2  - The term ocular rigidity is widely used in clinical ophthalmology. Generally it is assumed as a resistance of the whole eyeball to mechanical deformation and relates to biomechanical properties of the eye and its tissues. Basic principles and formulas for clinical tonometry, tonography and pulsatile ocular blood flow measurements are based on the concept of ocular rigidity. There is evidence for altered ocular rigidity in aging, in several eye diseases and after eye surgery. Unfortunately, there is no consensual view on ocular rigidity: it used to make a quite different sense for different people but still the same name. Foremost there is no clear consent between biomechanical engineers and ophthalmologists on the concept. Moreover ocular rigidity is occasionally characterized using various parameters with their different physical dimensions. In contrast to engineering approach, clinical approach to ocular rigidity claims to characterize the total mechanical response of the eyeball to its deformation without any detailed considerations on eye morphology or material properties of its tissues. Further to the previous chapter this section aims to describe clinical approach to ocular rigidity from the perspective of an engineer in an attempt to straighten out this concept, to show its advantages, disadvantages and various applications.
KW  - Coefficient of ocular rigidity
KW  - Eyeball
KW  - Corneo-scleral shell
KW  - Pressure-volume relationship
KW  - Differential tonometry
Y1  - 2021
SN  - 978-3-030-64422-2
U6  - https://doi.org/10.1007/978-3-030-64422-2_2
SP  - 15
EP  - 43
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Bozakov, Zdravko
A1  - Sander, Volker
T1  - OpenFlow: A Perspective for Building Versatile Networks
T2  - Network-Embedded Management and Applications
Y1  - 2013
SN  - 978-1-4419-6769-5
U6  - https://doi.org/10.1007/978-1-4419-6769-5_11
SP  - 217
EP  - 245
PB  - Springer
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Altherr, Lena
A1  - Leise, Philipp
A1  - Pfetsch, Marc E.
A1  - Schmitt, Andreas
T1  - Optimal design of resilient technical systems on the example of water supply systems
T2  - Mastering Uncertainty in Mechanical Engineering
Y1  - 2021
SN  - 978-3-030-78356-3
N1  - Unterkapitel des Kapitels "Strategies for Mastering Uncertainty"
SP  - 429
EP  - 433
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Müller, Tim M.
A1  - Altherr, Lena
A1  - Ahola, Marja
A1  - Schabel, Samuel
A1  - Pelz, Peter F.
T1  - Optimizing pressure screen systems in paper recycling: optimal system layout, component selection and operation
N2  - Around 60% of the paper worldwide is made from recovered paper. Especially adhesive contaminants, so called stickies, reduce paper quality. To remove stickies but at the same time keep as many valuable fibers as possible, multi-stage screening systems with several interconnected pressure screens are used. When planning such systems, suitable screens have to be selected and their interconnection as well as operational parameters have to be defined considering multiple conflicting objectives. In this contribution, we present a Mixed-Integer Nonlinear Program to optimize system layout, component selection and operation to find a suitable trade-off between output quality and yield.
KW  - Mixed-integer nonlinear problem
KW  - MINLP
KW  - Process engineering
KW  - Paper recycling
KW  - Multi-criteria optimization
Y1  - 2018
SN  - 978-3-030-18499-5
U6  - https://doi.org/10.1007/978-3-030-18500-8_44
SP  - 355
EP  - 361
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Brauner, Philipp
A1  - Vervier, Luisa
A1  - Brillowski, Florian
A1  - Dammers, Hannah
A1  - Steuer-Dankert, Linda
A1  - Schneider, Sebastian
A1  - Baier, Ralph
A1  - Ziefle, Martina
A1  - Gries, Thomas
A1  - Leicht-Scholten, Carmen
A1  - Mertens, Alexander
A1  - Nagel, Saskia K.
T1  - Organization Routines in Next Generation Manufacturing
T2  - Forecasting Next Generation Manufacturing
N2  - Next Generation Manufacturing promises significant improvements in performance, productivity, and value creation. In addition to the desired and projected improvements regarding the planning, production, and usage cycles of products, this digital transformation will have a huge impact on work, workers, and workplace design. Given the high uncertainty in the likelihood of occurrence and the technical, economic, and societal impacts of these changes, we conducted a technology foresight study, in the form of a real-time Delphi analysis, to derive reliable future scenarios featuring the next generation of manufacturing systems. This chapter presents the organization dimension and describes each projection in detail, offering current case study examples and discussing related research, as well as implications for policy makers and firms. Specifically, we highlight seven areas in which the digital transformation of production will change how we work, how we organize the work within a company, how we evaluate these changes, and how employment and labor rights will be affected across company boundaries. The experts are unsure whether the use of collaborative robots in factories will replace traditional robots by 2030. They believe that the use of hybrid intelligence will supplement human decision-making processes in production environments. Furthermore, they predict that artificial intelligence will lead to changes in management processes, leadership, and the elimination of hierarchies. However, to ensure that social and normative aspects are incorporated into the AI algorithms, restricting measurement of individual performance will be necessary. Additionally, AI-based decision support can significantly contribute toward new, socially accepted modes of leadership. Finally, the experts believe that there will be a reduction in the workforce by the year 2030.
Y1  - 2022
SN  - 978-3-031-07734-0
U6  - https://doi.org/10.1007/978-3-031-07734-0_5
SP  - 75
EP  - 94
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Helsper, Christoph
A1  - Fissan, H. J.
A1  - Franzen, H.
ED  - Benarie, Michel M.
T1  - Particle Size Distributions of Combustion Aerosols
T2  - Atmospheric Pollution 1978 : Proceedings of the 13th International Colloquium; 25-28 April 1978; Paris, France; Edited by Michel M. Benarie
N2  - It has been observed that carcinogenic polycyclic aromatic hydrocarbons (PAH) are present in the atmosphere. Combustion processes are considered the most important sources for PAH. Among these, the burning of coal produces the highest emission, but in cities with high traffic density and low meteorological exchange activities, vehicle emissions determine the immission situation, especially in narrow streets. For estimating the potential health effects caused by PAH, it is sufficient to characterize the emission of PAH with respect to their physical state, concentrations, and, as far as the particulate phase is concerned, size distribution. The size distribution is important for transport phenomena, inhalation, and deposition in the respiratory tract. These parameters mainly depend on the combustion system, on system operating conditions, on the exhaust system, and on exhaust cooling conditions. At exhaust-gas temperatures in the range of ambient air temperatures, almost the whole emission of PAH is made up of particulate matter.
Y1  - 1978
SN  - 0-444-41691-9
U6  - https://doi.org/10.1016/S0166-1116(08)71583-8
SP  - 263
EP  - 266
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Steuer-Dankert, Linda
A1  - Leicht-Scholten, Carmen
T1  - Perceiving diversity : an explorative approach in a complex research organization.
T2  - Diversity and discrimination in research organizations
N2  - Diversity management is seen as a decisive factor for ensuring the development of socially responsible innovations (Beacham and Shambaugh, 2011; Sonntag, 2014; López, 2015; Uebernickel et al., 2015). However, many diversity management approaches fail due to a one-sided consideration of diversity (Thomas and Ely, 2019) and a lacking linkage between the prevailing organizational culture and the perception of diversity in the respective organization. Reflecting the importance of diverse perspectives, research institutions have a special responsibility to actively deal with diversity, as they are publicly funded institutions that drive socially relevant development and educate future generations of developers, leaders and decision-makers. Nevertheless, only a few studies have so far dealt with the influence of the special framework conditions of the science system on diversity management. Focusing on the interdependency of the organizational culture and diversity management especially in a university research environment, this chapter aims in a first step to provide a theoretical perspective on the framework conditions of a complex research organization in Germany in order to understand the system-specific factors influencing diversity management. In a second step, an exploratory cluster analysis is presented, investigating the perception of diversity and possible influencing factors moderating this perception in a scientific organization. Combining both steps, the results show specific mechanisms and structures of the university research environment that have an impact on diversity management and rigidify structural barriers preventing an increase of diversity. The quantitative study also points out that the management level takes on a special role model function in the scientific system and thus has an influence on the perception of diversity. Consequently, when developing diversity management approaches in research organizations, it is necessary to consider the top-down direction of action, the special nature of organizational structures in the university research environment as well as the special role of the professorial level as role model for the scientific staff.
KW  - Diversity management
KW  - Organizational culture
KW  - Change management
KW  - Psychological concepts
KW  - Perception
Y1  - 2022
SN  - 978-1-80117-959-1 (Print)
SN  - 978-1-80117-956-0 (Online)
U6  - https://doi.org/10.1108/978-1-80117-956-020221010
SP  - 365
EP  - 392
PB  - Emerald Publishing Limited
CY  - Bingley
ER  - 
TY  - CHAP
A1  - Duong, Minh Tuan
A1  - Nguyen, Nhu Huynh
A1  - Staat, Manfred
T1  - Physical response of hyperelastic models for composite materials and soft tissues
T2  - Advances in Composite Material
Y1  - 2017
SN  - 978-1-61896-300-0 (Hardcover), 978-1-61896-299-7 (Paperback)
N1  - Chapter 5
PB  - Scientific Research Publishing
CY  - Wuhan
ER  - 
TY  - CHAP
A1  - Wilke, Thomas
ED  - Merlotti, Andrea
T1  - Planning Process of the Di Castellamonte’s Chapel of the Holy Shroud
T2  - Carlo e Amedeo di Castellamonte : 1571-1683, ingegneri e architetti per i duchi di Savoia
Y1  - 2016
SN  - 978-88-98229-57-4
N1  - Architettura e potere ; 4
SP  - 141
EP  - 152
PB  - Campisano editore
CY  - Rom
ER  - 
TY  - CHAP
A1  - Gkatzogias, Konstantinos
A1  - Veljkoviv, Ana
A1  - Pohoryles, Daniel A.
A1  - Tsionis, Georgios
A1  - Bournas, Dionysios A.
A1  - Crowley, Helen
A1  - Norlén, Hedvig
A1  - Butenweg, Christoph
A1  - Gervasio, Helena
A1  - Manfredi, Vincenzo
A1  - Masi, Angelo
A1  - Zaharieva, Roumiana
ED  - Gkatzogias, Konstantinos
ED  - Tsionis, Georgios
T1  - Policy practice and regional impact assessment for building renovation
T2  - REEBUILD Integrated Techniques for the Seismic Strengthening & Energy Efficiency of Existing Buildings
N2  - The work presented in this report provides scientific support to building renovation policies in the EU by promoting a holistic point of view on the topic. Integrated renovation can be seen as a nexus between European policies on disaster resilience, energy efficiency and circularity in the building sector. An overview of policy measures for the seismic and energy upgrading of buildings across EU Member States identified only a few available measures for combined upgrading. Regulatory framework, financial instruments and digital tools similar to those for energy renovation, together with awareness and training may promote integrated renovation. A framework for regional prioritisation of building renovation was put forward, considering seismic risk, energy efficiency, and socioeconomic vulnerability independently and in an integrated way. Results indicate that prioritisation of building renovation is a multidimensional problem. Depending on priorities, different integrated indicators should be used to inform policies and accomplish the highest relative or most spread impact across different sectors. The framework was further extended to assess the impact of renovation scenarios across the EU with a focus on priority regions. Integrated renovation can provide a risk-proofed, sustainable, and inclusive built environment, presenting an economic benefit in the order of magnitude of the highest benefit among the separate interventions. Furthermore, it presents the unique capability of reducing fatalities and energy consumption at the same time and, depending on the scenario, to a greater extent.
Y1  - 2022
SN  - 978-92-76-60454-9
U6  - https://doi.org/10.2760/883122
SN  - 1831-9424
SP  - 1
EP  - 68
PB  - Publications Office of the European Union
CY  - Luxembourg
ER  - 
TY  - CHAP
A1  - Fabo, Sabine
ED  - Kacunko, Slavko
T1  - Portrait of the artist as a spoilsport : Marcel Odenbach's concept of detachment
T2  - Take it or leave it : Marcel Odenbach - anthology of texts and videos. - (eva - edition video art ; 2)
Y1  - 2013
SN  - 978-3-8325-3386-1
SP  - 11
EP  - 29
PB  - Logos
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Knott, Thomas C.
A1  - Sofronia, Raluca E.
A1  - Gerressen, Marcus
A1  - Law, Yuen
A1  - Davidescu, Arjana
A1  - Savii, George G.
A1  - Gatzweiler, Karl-Heinz
A1  - Staat, Manfred
A1  - Kuhlen, Torsten W.
T1  - Preliminary bone sawing model for a virtual reality-based training simulator of bilateral sagittal split osteotomy
T2  - Biomedical simulation : 6th International Symposium, ISBMS 2014, Strasbourg, France, October 16-17, 2014 : proceedings (Lecture notes in computer science : vol. 8789)
N2  - Successful bone sawing requires a high level of skill and experience, which could be gained by the use of Virtual Reality-based simulators. A key aspect of these medical simulators is realistic force feedback. The aim of this paper is to model the bone sawing process in order to develop a valid training simulator for the bilateral sagittal split osteotomy, the most often applied corrective surgery in case of a malposition of the mandible. Bone samples from a human cadaveric mandible were tested using a designed experimental system. Image processing and statistical analysis were used for the selection of four models for the bone sawing process. The results revealed a polynomial dependency between the material removal rate and the applied force. Differences between the three segments of the osteotomy line and between the cortical and cancellous bone were highlighted.
KW  - Bone sawing
KW  - virtual reality
KW  - training simulator
Y1  - 2014
SN  - 978-3-319-12057-7 (Online)
SN  - 978-3-319-12056-0 (Print)
U6  - https://doi.org/10.1007/978-3-319-12057-7_1
SP  - 1
EP  - 10
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Schwarte, Rudolf
A1  - Heinol, Horst-Guenther
A1  - Buxbaum, Bernd
A1  - Ringbeck, Thorsten
A1  - Xu, Z.
A1  - Hartmann, K.
ED  - Jähne, Bernd
T1  - Principles of three-dimensional imaging techniques
T2  - Sensors and imaging. - (Handbook of computer vision and applications ; Vol. 1)
Y1  - 1999
SN  - 0-12-379771-3 (Einzelbd.)
SN  - 0-12-379770-5 (Gesamtwerk)
SP  - 463
EP  - 485
PB  - Academic Press
CY  - San Diego
ER  - 
TY  - CHAP
A1  - Staat, Manfred
A1  - Heitzer, Michael
ED  - Staat, Manfred
ED  - Heitzer, Michael
T1  - Probabilistic limit and shakedown problems
T2  - Numerical methods for limit and shakedown analysis. Deterministic and probabilistic problems
Y1  - 2003
SN  - 3-00-010001-6
N1  - NIC Series
VL  - 15
SP  - 217
EP  - 268
PB  - John von Neumann Institute for Computing (NIC)
CY  - Jülich
ER  - 
TY  - CHAP
A1  - Stenger, David
A1  - Altherr, Lena
A1  - Müller, Tankred
A1  - Pelz, Peter F.
T1  - Product family design optimization using model-based engineering techniques
T2  - Operations Research Proceedings 2017
N2  - Highly competitive markets paired with tremendous production volumes demand particularly cost efficient products. The usage of common parts and modules across product families can potentially reduce production costs. Yet, increasing commonality typically results in overdesign of individual products. Multi domain virtual prototyping enables designers to evaluate costs and technical feasibility of different single product designs at reasonable computational effort in early design phases. However, savings by platform commonality are hard to quantify and require detailed knowledge of e.g. the production process and the supply chain. Therefore, we present and evaluate a multi-objective metamodel-based optimization algorithm which enables designers to explore the trade-off between high commonality and cost optimal design of single products.
Y1  - 2018
SN  - 978-3-319-89919-0
U6  - https://doi.org/10.1007/978-3-319-89920-6_66
SP  - 495
EP  - 502
PB  - Springer
CY  - Cham
ER  -