1,720,996 research outputs found
Biomimetic Vortex Propulsion: Toward the New Paradigm of Soft Unmanned Underwater Vehicles
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Regiochemical Control in the Oxidative Coupling of Metal Phenolates: Highly Selective Synthesis of Symmetric, Hydroxylated Biaryls
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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 3D Steady State Model of a Tendon-Driven Continuum Soft Manipulator Inspired by Octopus Arm
No full textControl and modelling of continuum robots are challenging tasks for robotic researchers. Most
works on modelling are limited to piecewise constant curvature. In many cases they neglect to
model the actuators or avoid a continuum approach. In particular, in the latter case this leads to
a complex model hardly implemented. In this work, a geometrically exact steady-state model
of a tendon-driven manipulator inspired by the octopus arm is presented. It takes a continuum
approach, fast enough to be implemented in the control law, and includes a model of the
actuation system. The model was experimentally validated and the results are reported. In
conclusion, the model presented can be used as a tool for mechanical design of continuum
tendon-driven manipulators, for planning control strategies or as internal model in an
embedded system
Reinvestigation of the Pummerer Arylation of Quinones: A Selective Approach to 2,2',5'-Trihydroxybiaryls
No full textpara-terz-Butilazione selettiva del Fenolo con MTBE promossa da Catalizzatori eterogenei
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