Refine
Year of publication
- 2003 (29) (remove)
Document Type
- Report (29) (remove)
Has Fulltext
- yes (29)
Keywords
- Lineare Algebra (4)
- Mathematikunterricht (4)
- Modellierung (4)
- linear algebra (4)
- modelling (4)
- praxisorientiert (4)
- mathematical education (3)
- Ambient Intelligence (2)
- Elektrotechnik (2)
- Lineare Optimierung (2)
- Regelung (2)
- Simplex (2)
- Stücklisten (2)
- Szenario (2)
- linear optimization (2)
- praxis orientated (2)
- simplex (2)
- : Navier-Stokes equations (1)
- : multiple criteria optimization (1)
- : multiple objective programming (1)
- AG-RESY (1)
- AKLEON (1)
- Blocked Neural Networks (1)
- Brinkman (1)
- CAD (1)
- Code Inspection (1)
- Discrete linear systems (1)
- Folgar-Tucker equation (1)
- Fräsen (1)
- Hals-Nasen-Ohren-Chirurgie (1)
- Hals-Nasen-Ohren-Heilkunde (1)
- Hankel matrix (1)
- Heston model (1)
- Hörgerät (1)
- Implantation (1)
- Informatik (1)
- Integer programming (1)
- Knowledge Extraction (1)
- META-AKAD (1)
- Mastoid (1)
- Mastoidektomie (1)
- Multicriteria decision making (1)
- Navier-Stokes (1)
- Networked Control Systems (1)
- Netzwerk (1)
- Nonlinear Regression (1)
- Nonlinear multigrid (1)
- Ohrenchirurgie (1)
- Option pricing (1)
- Produktion (1)
- RONAF (1)
- Roboter (1)
- SIMPLE (1)
- Schädelchirurgie (1)
- Stein equation (1)
- adaptive local refinement (1)
- adaptive refinement (1)
- adaptive triangulation (1)
- asymptotic homogenization (1)
- automated analog circuit design (1)
- batch presorting problem (1)
- behavioral modeling (1)
- bills of material (1)
- bills of materials (1)
- circuit sizing (1)
- cliquet options (1)
- clustering and disaggregation techniques (1)
- competetive analysis (1)
- computer algebra (1)
- coupled flow in plain and porous media (1)
- decision support systems (1)
- dif (1)
- discrete facility location (1)
- discrete location (1)
- efficient set (1)
- evolutionary algorithms (1)
- expert system (1)
- fatigue (1)
- fiber orientation (1)
- forward starting options (1)
- fuzzy logic (1)
- genetic algorithms (1)
- incompressible flow (1)
- injection molding (1)
- interactive navigation (1)
- knowledge management (1)
- knowledge representation (1)
- lid-driven flow in a (1)
- logistics (1)
- macro modeling (1)
- mastoid (1)
- mastoidectomy (1)
- mathematica education (1)
- model reduction (1)
- multigrid methods (1)
- multiscale structures (1)
- non-Newtonian flow in porous media (1)
- non-local conditions (1)
- numerical simulation (1)
- oil filters (1)
- online optimization (1)
- otorhinolaryngological surgery (1)
- polynomial algorithms (1)
- project management and scheduling (1)
- projection-type splitting (1)
- real-life applications. (1)
- representative systems of Pareto solutions (1)
- singularity (1)
- software development (1)
- stability (1)
- stochastic volatility (1)
- strategic (1)
- strength (1)
- supply chain management (1)
- symbolic analysis (1)
- system simulation (1)
- variable neighborhood search (1)
- visual (1)
- visual interfaces (1)
Faculty / Organisational entity
UML and SDL are languages for the development of software systems that have different origins, and have evolved separately for many years. Recently, it can be observed that OMG and ITU, the standardisation bodies responsible for UML and SDL, respectively, are making efforts to harmonise these languages. So far, harmonisation takes place mainly on a conceptual level, by extending and aligning the set of language concepts. In this paper, we argue that harmonisation of languages can be approached both from a syntactic and semantic perspective. We show how a common syntactical basis can be derived from the analysis of the UML meta-model
and the SDL abstract grammar. For this purpose, conceptually sound and well-founded mappings from meta-models to abstract grammars and vice versa are defined and applied. On the semantic level, a comparison between corresponding language constructs is performed.
Unter Ambient Intelligence (AmI) wird die Integration verschiedener Technologien zu einer den Menschen umgebenden, (nahezu) unsichtbaren Gesamtheit verstanden. Diese Intelligente Umgebung wird möglich durch die Miniaturisierung hochintegrierter Bauteile (Sensoren, Aktuatoren und Rechnern), deren zunehmende Intelligenz und vor allem deren lokale und globale zunehmend drahtlose Vernetzung. Unter dem Titel Man-u-Faktur 2012 (man and factoring in 2012) wurde an der Technischen Universität Kaiserslautern im Rahmen des Forschungsschwerpunkts Ambient Intelligence ein Szenario entwickelt, das ein beeindruckendes Gesamtbild einer Technik, die den Menschen in den Mittelpunkt rückt, beschreibt. Man-u-Faktur 2012 steht dabei für ein Weiterdrehen des Rads der Industrialisierung von der heute üblichen variantenreichen, technologiezentrierten Massenfertigung hin zu einer kundenindividuellen, mitarbeiterzentrierten Maßfertigung. Im Speziellen wird hierunter der Aufbau massiv verteiler kunden- aber auch mitarbeiterfreundlicher Produktionsanlagen verstanden, die sich im hochdynamischen Umfeld entsprechend der jeweiligen Gegebenheiten anzupassen wissen. Der Mensch ist überall dort präsent, wo flexibles Arbeiten oder flexible Entscheidungen im Vordergrund stehen. In diesem Bericht wird der Einfluss von Ambient Intelligence beispielhaft auf die Vision einer Fahrradproduktion in der Man-u-Faktur 2012 angewandt. Aus diesem Szenario werden anschließend sowohl die zu entwickelnden Schlüsseltechnologien als auch die Einflüsse auf Wirtschaft und Gesellschaft abgeleitet.
Dieses Szenario ist eine Erweiterung eines Teilszenarios von Human Centered Manufacturing. Dabei geht es um die Montage der Energieelektrik für industrielle Anlagen. Im Jahr 2015 enthält die Ausrüstung eines Elektromonteurs bei der Verdrahtung von Schaltschränken u.a. einen Schutzhelm mit integrierter Farbkamera, integriertem Mikrofon und einem Lautsprecher im Ohrbereich sowie einen automatisch gesteuerten Laserpointer. Auf der Baustelle sind keine Pläne mehr erforderlich. Der Monteur benötigt keinen Plan während der Montage.
A new stability preserving model reduction algorithm for discrete linear SISO-systems based on their impulse response is proposed. Similar to the Padé approximation, an equation system for the Markov parameters involving the Hankel matrix is considered, that here however is chosen to be of very high dimension. Although this equation system therefore in general cannot be solved exactly, it is proved that the approximate solution, computed via the Moore-Penrose inverse, gives rise to a stability preserving reduction scheme, a property that cannot be guaranteed for the Padé approach. Furthermore, the proposed algorithm is compared to another stability preserving reduction approach, namely the balanced truncation method, showing comparable performance of the reduced systems. The balanced truncation method however starts from a state space description of the systems and in general is expected to be more computational demanding.
Industrial analog circuits are usually designed using numerical simulation tools. To obtain a deeper circuit understanding, symbolic analysis techniques can additionally be applied. Approximation methods which reduce the complexity of symbolic expressions are needed in order to handle industrial-sized problems. This paper will give an overview to the field of symbolic analog circuit analysis. Starting with a motivation, the state-of-the-art simplification algorithms for linear as well as for nonlinear circuits are presented. The basic ideas behind the different techniques are described, whereas the technical details can be found in the cited references. Finally, the application of linear and nonlinear symbolic analysis will be shown on two example circuits.
Las matemáticas son atribuidas en general a algo no claro y sólo para matemáticos. La imagen de las matemáticas para los escolares, es la de una ciencia, la cual se sirve sólo de si misma. Es importante hacer frente al prejuicio de que las matemáticas distan lejos de toda utilidad práctica. La matemática es una ciencia al servicio de todas las dem´as ciencias, de cuya ayuda se necesita en casi todos los campos de la vida. La matemática de la escuela debería despertar en cualquier ámbito de la vida de los escolares el interés sobre ...
We consider the problem of pricing European forward starting options in the presence of stochastic volatility. By performing a change of measure using the asset price at the time of strike determination as a numeraire, we derive a closed-form solution based on Heston’s model of stochastic volatility.
This paper concerns numerical simulation of flow through oil filters. Oil filters consist of filter housing (filter box), and a porous filtering medium, which completely separates the inlet from the outlet. We discuss mathematical models, describing coupled flows in the pure liquid subregions and in the porous filter media, as well as interface conditions between them. Further, we reformulate the problem in fictitious regions method manner, and discuss peculiarities of the numerical algorithm in solving the coupled system. Next, we show numerical results, validating the model and the algorithm. Finally, we present results from simulation of 3-D oil flow through a real car filter.
On a Multigrid Adaptive Refinement Solver for Saturated Non-Newtonian Flow in Porous Media A multigrid adaptive refinement algorithm for non-Newtonian flow in porous media is presented. The saturated flow of a non-Newtonian fluid is described by the continuity equation and the generalized Darcy law. The resulting second order nonlinear elliptic equation is discretized by a finite volume method on a cell-centered grid. A nonlinear full-multigrid, full-approximation-storage algorithm is implemented. As a smoother, a single grid solver based on Picard linearization and Gauss-Seidel relaxation is used. Further, a local refinement multigrid algorithm on a composite grid is developed. A residual based error indicator is used in the adaptive refinement criterion. A special implementation approach is used, which allows us to perform unstructured local refinement in conjunction with the finite volume discretization. Several results from numerical experiments are presented in order to examine the performance of the solver.