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221.
Eduardo V.L. Nunes Alessandro J. Peixoto Tiago Roux Oliveira Liu Hsu 《Journal of The Franklin Institute》2014
This paper presents a solution to the problem of global exact output tracking for uncertain MIMO (multiple-input–multiple-output) linear plants with non-uniform arbitrary relative degree using output feedback sliding mode control. The key idea to overcome the relative degree obstacle is to generalize our previous hybrid estimation scheme to a multivariable version by combining, through switching, a standard linear lead filter with a non-linear one based on robust exact differentiators, achieving uniform global exponential practical stability and exact tracking. 相似文献
222.
Our paper deals with an effective application of the pseudospectral method to solution of Hamiltonian boundary value problems in optimal control theory. The developed numerical methodology is based on the celebrated Gauss pseudospectral approach. The last one makes it possible to reduce the conventional Hamiltonian boundary value problem to an auxiliary algebraic system. The implementable algorithm we propose is computationally consistent and moreover, involves numerically tractable results for a relative small discretization grids. However, the solution of the obtained algebraic equations system may has a low convergence radius. We next use the differential continuation approach in order to weaken the necessity of the well-defined initial conditions for the above algebraic system. The presented solution procedure can be extremely useful when the generic shooting-type methods fail because of sensitivity or stiffness. We discuss some numerical results and establish the efficiency of the proposed methodology. 相似文献
223.
Costa Ricardo V Fernández-Jardon Fernández Carlos Figueroa Dorrego Pedro 《知识管理研究与实践》2014,12(3):322-338
Knowledge Management Research & Practice - The general purpose of this research is to study interaction effects between intangible assets and product innovation. More specifically, the authors... 相似文献
224.
Emiliya S. Egorova Alyona V. Borisova Leysan J. Mustafina Alina A. Arkhipova Rashid T. Gabbasov Anastasiya M. Druzhevskaya 《Journal of sports sciences》2014,32(13):1286-1293
AbstractResearch concerned with predictors of talent in football has highlighted a number of potentially important and partially inherited measures such as body size, anaerobic power, aerobic capacity, agility, psychological profile, game intelligence and susceptibility to injuries. Genotyping for performance-associated DNA polymorphisms at an early age could be useful in predicting later success in football. The aim of the study was to investigate individually and in combination the association of common gene polymorphisms with football player’s status. A total of 246 Russian football players and 872 controls were genotyped for 8 gene polymorphisms, which were previously reported to be associated with athlete status. Four alleles (ACE D, ACTN3 Arg577, PPARA rs4253778 C and UCP2 55Val) were first identified, showing discrete associations with football player’s status. Next, we determined the total genotype score (TGS, from the accumulated combination of the 4 polymorphisms, with a maximum value of 100 for the theoretically optimal polygenic score) in athletes and controls. The mean TGS was significantly higher in football players (52.0 (17.6) vs. 41.3 (15.5); P < 0.0001) than in controls. These data suggest that the likelihood of becoming a football player depends on the carriage of a high number of “favourable” gene variants. 相似文献
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V. M. Moscovkin 《Scientific and Technical Information Processing》2010,37(1):49-54
This paper gives the webometric estimate of the functioning of the universities included in the Near-Frontier Belarusan-Russian-Ukrainian
University Consortium (in the context of the adoption of the Belgorod Declaration on open access to scientific knowledge and
our cultural heritage) during 2008–2009 on the basis of the Spanish webometric university ranking and the potential of the
Google Scholar search engine. The classification of the universities of the Near-Frontier Belarusan-Russian-Ukrainian University
Consortium has been built according to the degree of publication activities. The influence of the Belgorod Declaration on
university publication activities was shown. 相似文献
228.
This is a list of books that should be available in either the hospital emergency room or the medical library. The forty-nine books listed are divided into the following categories: General, Surgery and Trauma, Burns, Cardiology, Dentistry, Disaster Medicine, First Aid, Geriatrics, Obstetrics, Pediatrics, Psychiatry, Toxicology, and Transportation. An asterisk has been placed before twelve books that are particularly recommended for the hospital emergency room as well as the medical library. The latest edition is given for each book, and, unless otherwise noted, each has been annotated by one of the authors. 相似文献
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