1,721,019 research outputs found
Modelling and Identification of a Remotely Operated Vehicle
No full textThe linear models obtained by linearization and discretization of the dynamics of a remotely operated vehicle around the operating points are compared with the linear models
obtained by parametric identication methods based on experimental data collected in
real operative conditions. The results of this analysis produce a signicative estimation
of the parameters variability of the considered class of linear models. In the design of
multiple models controllers this analysis is of main relevance for choosing the number of
linear models and their distribution in the parameters space
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A system for the automatic survey of underwater structures
No full textIn this paper we describe the architecture of an automatic navigation and inspection system for underwater robotic vehicles, employed in the survey of underwater structures like pipelines. Using sensory data and a map of the structure to survey, the system is able to update the information about the status of the pipeline
A navigation and inspection system for underwater survey vehicles
No full textA navigation and inspection system for underwater survey vehicles is presented. The system is composed by two subsystems that, in particular, take care of the navigation task and of the inspection task. In order to act efficiently, the two mentioned subsystems have to interact for ascertaining the location of the vehicle along a pipeline. The scheme of interaction is described and the results of suitable simulations are briefly described and discussed
Interleukin 2 (IL2) production by pheripheral blood mononuclear cells (PBC) treated with H2-receptor antagonists (H2ra)
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Pathogenie des infections genito-urinaires par enterococques: etude "in vitro" et "in vivo" de couples infertiles
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