1,723,292 research outputs found
Extraction of English Collocations and their Chinese-English Bilingual Examples from Parallel Corpora
No full textAn active disturbance rejection control approach for decentralized tracking in interconnected systems
No full textIn this article, an Active Disturbance Rejection
Control (ADRC) approach is proposed for the robust decentralized
solution of local trajectory tracking control problems
on the part of agents acting on a complex interconnection
of nonlinear subsystems. The key idea is that each agent regards
all the nonlinear uncertainties arising from: 1) unknown
state dependent nonlinearities of his own subsystem, 2) the
environmental exogenous effects and 3) the rest of influences
of the network dynamics, as a lumped, unstructured, timevarying
uncertainty that perturbs the agent’s subsystem local
dynamics. The ADRC approach allows to estimate this complex
local interaction function and proceeds to cancel it from each
individual subsystem dynamics facilitating the accomplishment
of the individual control objectives. Simple but significant
illustrative examples are presented where two interconnected
DC to DC power converters serve a common or individual
uncertain load while trying to independently track a prescribed
output voltage reference trajectory in a decentralized manner
Characterizing the morphology of real street models and modeling its effect on thermal environment
No full textA numerical study on the correlation between sky view factor and summer microclimate of local climate zones
No full text
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
- …
