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Institution

Technische Universität Darmstadt

EducationDarmstadt, Germany
About: Technische Universität Darmstadt is a education organization based out in Darmstadt, Germany. It is known for research contribution in the topics: Neutron & Finite element method. The organization has 17316 authors who have published 40619 publications receiving 937916 citations. The organization is also known as: Darmstadt University of Technology & University of Darmstadt.


Papers
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Journal ArticleDOI
TL;DR: In this article, the transmission and reflection of the multilayers were measured, as well as the film thickness and the sheet resistance, and the complex indices of refraction both of ITO and of AgCu were calculated from the measured data.

216 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the deactivation of an industrial catalyst and a supported ruthenium catalyst, and evaluated their deactivation mechanisms, and a scheme of the reaction network was set up.
Abstract: Hydrogenation of aqueous glucose solution was performed in batch and continuous reactors using supported nickel and ruthenium catalysts. Preparation methods were precipitation, impregnation, sol-gel and template syntheses, and SiO2, TiO2, Al2O3 and carbon were used as support materials. A procedure for the one-step synthesis of templated metal on support catalysts was established. The influence of support material and preparation methods was studied and the results were compared with those of an industrial nickel catalyst. In a detailed study taking more than 1100 h time on stream we investigated the deactivation of the industrial catalyst and a supported ruthenium catalyst, and evaluated the deactivation mechanisms. As yet unpublished side products of the glucose hydrogenation were identified and a scheme of the reaction network was set up.

216 citations

01 Jan 2003
TL;DR: Iterated Local Search (ILS) as mentioned in this paper is a general purpose metaheuristic for finding good solutions of combinatorial optimization problems, which is based on building a sequence of (locally optimal) solutions by perturbing the current solution and applying local search to that modified solution.
Abstract: This is a survey of "Iterated Local Search", a general purpose metaheuristic for finding good solutions of combinatorial optimization problems. It is based on building a sequence of (locally optimal) solutions by: (1) perturbing the current solution; (2) applying local search to that modified solution. At a high level, the method is simple, yet it allows for a detailed use of problem-specific properties. After giving a general framework, we cover the uses of Iterated Local Search on a number of well studied problems.

216 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of (K 0.5 Na0.5 NbO3 (KNN) addition on the ferroelectric behavior of lead-free piezoceramics was investigated.
Abstract: The effect of (K0.5Na0.5)NbO3 (KNN) addition on the ferroelectric behavior of (Bi1/2Na1/2)TiO3–(Bi1/2K1/2)TiO3 (BNT–BKT) lead-free piezoceramics was investigated. Polarization and strain hysteresis loops indicate that the ferroelectric order is disrupted significantly with the addition of KNN as a replacement for BNT and the destabilization of the ferroelectric order is accompanied by an enhancement of the unipolar strain, which peaks at a value of ∼0.48% (corresponding to a large signal d33 of ∼600 pm/V) at 1 mol% KNN content. This strain was analyzed as derived from an electrostrictive effect at lower electric fields and a converse piezoelectric effect at higher electric fields. By limiting the electric driving field to exclude the contribution from the converse piezoelectric effect, a temperature-insensitive large-field d33 of ∼250 pm/V up to 200°C was achieved.

216 citations

Journal ArticleDOI
TL;DR: In this paper, a comprehensive review of dynamic simulation, its development and application to various thermal power plants is presented, highlighting current research efforts and future development potential in the field of thermal power generation.

215 citations


Authors

Showing all 17627 results

NameH-indexPapersCitations
Yang Gao1682047146301
Herbert A. Simon157745194597
Stephen Boyd138822151205
Jun Chen136185677368
Harold A. Mooney135450100404
Bernt Schiele13056870032
Sascha Mehlhase12685870601
Yuri S. Kivshar126184579415
Michael Wagner12435154251
Wolf Singer12458072591
Tasawar Hayat116236484041
Edouard Boos11675764488
Martin Knapp106106748518
T. Kuhl10176140812
Peter Braun-Munzinger10052734108
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023135
2022624
20212,462
20202,585
20192,609
20182,493