1,721,460 research outputs found
Samuel Merrill, Orlando C. Howe, J. D. Wells
No full textObituaries for several notable people, including Samuel Merrill, seventh governor of Iowa, Captain Orlando C. Howe, and Reverend J.D. Wells
Samuel Merrill, Orlando C. Howe, J. D. Wells
No full textObituaries for several notable people, including Samuel Merrill, seventh governor of Iowa, Captain Orlando C. Howe, and Reverend J.D. Wells
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
In-situ reduction of hexavalent chromium by electroremediation with ferrous iron
No full textThesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.Includes bibliographical references (p. 59-60).by Orlando C. Taylor.M.S
An equivalent single-layer approach for free vibrations analysis of smart laminated thick composite plates
No full textAn equivalent single-layer model for the free vibration analysis of smart laminated plates is presented.
The electric and magnetic fields are assumed to be quasi-static and third-order in-plane kinematics is employed to adequately take the shear influence into account when the plate thickness increases.
The model governing equations are the plate equations of motion written in terms of mechanical primary variables and effective stiffness coefficients, which take the multifield coupling effects into account.
The model shows that the surfaces magneto-electric boundary conditions enter the definitions of the laminate forces and moments resultants.
Moreover, it reveals that new stiffness terms, which are related to the derivatives of the transverse displacement component and are exclusively associated to the piezoelectric and piezomagnetic couplings, are involved.
Free vibrations solutions for simply-supported plates are presented to validate the model by comparing the present results with benchmark 3-\emph{D} solutions.
Comparison of the results obtained by lower order models, namely zero and first order shear deformation theories, is presented and discussed focusing on the adequateness of the obtained models with respect to the plate thickness.
Some characteristics features of smart laminates behavior have also been addressed
Variable kinematics models for multilòayered smart plates
No full textFamilies of layer-wise and equivalent single layer advanced finite elements for
the geometrically nonlinear analysis of smart multilayered plates are formulated in a unified
framework. The proposed modeling strategy reduces the multifield problems to an effective
mechanical plate by the condensation of the electromechanical state into the plate kinematics,
which is assumed as a variable order expansion along the plate thickness. Numerical results
are presented to validate the proposed modeling approach and finite elements and to investigate
their features
A Two-Node Finite Element for Linear Magneto-Electric Laminated Timoshenko Beams
No full textA new finite element is presented for linear magnetoelectric straight laminated beam
subject to the assumptions of quasi-steady electromagnetic state. The mechanical
model is based upon Timoshenko beam theory to account for shear deformation influences.
The electromagnetic stacking sequence is proved to enter the equivalent
elastic problem by affecting both the stiffness properties of the beam, in terms of axial
and flexural coupling, and by modifying the mechanical boundary conditions as distributed
loads. Shape functions are first written for the generalized beam mean-line
kinematical quantities in such a way the obtained strain field fulfills the homogeneous
governing equations of the equivalent elastic problem. The weak form of the governing
equations are then obtained by integrating over the element length the equation of
motion of the beam opportunely multiplied by the virtual mean-line axial and transverse
displacements and by the virtual cross-sectional rotation. Both the virtual and
actual kinematical quantities are then expressed in terms of virtual and actual nodal
variables by means of the proposed shape functions. By so doing, the definitions of
the element mass and stiffness matrices and of the equivalent force vector are straightforwardly
obtained. Lastly, numerical results are presented to assess the soundness of
the proposed formulation
PROCEDURA SISTEMATICA ED AUTOMATICA DI IDENTIFICAZIONE E RIMOZIONE DELL'ARTEFATTO PRESENTE NEI SEGNALI DI RISPOSTA DEL CERVELLO UMANO OTTENUTI DA STIMOLAZIONE ELETTROFISIOLOGICA PROFONDA
No full textVariations 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
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