1,721,038 research outputs found
Linear and nonlinear aeroelastic analysis of fighter-type wing with control surface
No full textLinear and nonlinear aeroelastic analyses of a fighter-type Wing with a control surface have been performed by using frequency-domain and time-domain analyses. Modes from free vibration analysis and a doublet-hybrid method are used for the computation of subsonic unsteady aerodynamic forces. The fictitious mass modal approach is used to reduce the problem size and the computation time in the linear and nonlinear flutter analyses. For the nonlinear flutter analysis, the control surface hinge is, represented by a free-play spring and is linearized by using the describing function method. The linear and nonlinear flutter analysers indicate that the flapping mode of the control surface and the hinge stiffness have significant effects on the flutter characteristics. From the nonlinear flutter analysis, limit-cycle oscillation and chaotic motion are observed in a wide range of air speed below the linear flutter boundary, and a jump of limit-cycle oscillation amplitude is observed.This research was supported by the Agency for Defense Development
and the Ministry of Science and Technology (National
Research Laboratory Program) in the Republic of Korea. This support
is gratefully acknowledged
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
Detection of DNA immobilization and hybridization on the gold/silver nanopattern using localized surface plasmon resonance
No full textShape and vibration control of smart composite structures
No full textThis research was partially supported by the Smart UAV Development program, one
of the 21st Century Frontier R&D Programs funded by the Ministry of Science and
Technology of Korea. The authors also acknowledge the support from the National
Research Laboratory (NRL) Program
Performance of Polishing Slurries containing Silica Particles grown by Sol-Gel Method
Full text linkKOSEF and Brain Korea 21 Project
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Magnetization Reversal of Co/Pd Multilayer Nanodot Arrays Made By Self-Aseembled Colloidal Lithography
No full textAbsorption of Carbon Dioxide into Aqueous Mixtures of 2-Amino-2-Methyl-1-Propanol with Monoethanolamine
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