Institution
Instituto Superior Técnico
Education•
About: Instituto Superior Técnico is a based out in . It is known for research contribution in the topics: Catalysis & Finite element method. The organization has 10085 authors who have published 30226 publications receiving 667524 citations. The organization is also known as: IST & Instituto Superior Tecnico.
Topics: Catalysis, Finite element method, Population, Black hole, Ionic liquid
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09 Dec 2003
TL;DR: In this paper, a nonlinear adaptive control law is proposed to steer a wheeled robot of unicycle type along a desired spatial path by controlling explicitly the rate of progression of a "virtual target" to be tracked along the path.
Abstract: This paper derives a new type of control law to steer the dynamic model of a wheeled robot of unicycle type along a desired spatial path. The methodology adopted for path following control deals explicitly with vehicle dynamics and plant parameter uncertainty. Furthermore, it overcomes stringent initial condition constraints that are present in a number of path following control strategies described in the literature. This is done by controlling explicitly the rate of progression of a "virtual target" to be tracked along the path, thus bypassing the problems that arise when the position of the virtual target is simply defined by the projection of the actual vehicle on that path. The nonlinear adaptive control law proposed yields convergence of the (closed loop system) path following error trajectories to zero. Controller design relies on Lyapunov theory and backstepping techniques. Simulation results illustrate the performance of the control system proposed.
260 citations
TL;DR: This emerging and multidisciplinary approach offers new opportunities for the design and control of stem cells in tissue engineering and cellular therapies and promises to expedite drug discovery in the biotechnology and pharmaceutical industries.
260 citations
TL;DR: In this article, the effect of incorporating recycled aggregates, sourced from processed construction and demolition waste, on the modulus of elasticity of concrete is identified, based on the identification, appraisal, selection and synthesis of the evidence of 121 publications published over a period of 43 years from 1973 to 2015.
260 citations
TL;DR: It was verified that sustainability has been mainly tackled by assessing economic and environmental aspects, leaving behind the social aspects, and it was found that optimization models applied to strategic level decisions are the most preponderant studies.
258 citations
Technische Universität München1, University of Hamburg2, Ohio State University3, Russian Academy of Sciences4, Karlsruhe Institute of Technology5, Harish-Chandra Research Institute6, Petersburg Nuclear Physics Institute7, Tata Institute of Fundamental Research8, Hawaii Pacific University9, University of Oulu10, University of Tübingen11, Max Planck Society12, Institut de Physique du Globe de Paris13, University of Jyväskylä14, University of Bucharest15, University of Hawaii16, University of Paris17, Drexel University18, University of Zurich19, University of Maryland, College Park20, Spanish National Research Council21, Instituto Superior Técnico22, Durham University23, George Mason University24, University of Helsinki25, RWTH Aachen University26, University of Ioannina27
TL;DR: In this paper, the authors proposed the liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) as a multipurpose neutrino observatory.
258 citations
Authors
Showing all 10288 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Joao Seixas | 153 | 1538 | 115070 |
| A. Gomes | 150 | 1862 | 113951 |
| Amartya Sen | 149 | 689 | 141907 |
| António Amorim | 136 | 1477 | 96519 |
| Joao Varela | 133 | 1411 | 92438 |
| Pietro Faccioli | 132 | 1378 | 89795 |
| João Carvalho | 126 | 1278 | 77017 |
| Pedro Jorge | 124 | 776 | 68658 |
| Pedro Silva | 124 | 961 | 74015 |
| A. De Angelis | 118 | 534 | 54469 |
| Hermine Katharina Wöhri | 116 | 629 | 55540 |
| Helena Santos | 114 | 1058 | 54286 |
| P. Conde Muiño | 109 | 558 | 56133 |
| Joao Saraiva | 107 | 519 | 53340 |
| J. N. Reddy | 106 | 926 | 66940 |