Guidance Motion
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Numerical Study of the Circumferential Fuses Used in Steel Repairable Buildings with Seesaw Motion
Abstract Structural fuses and rocking system are used in order to reduce the building response to earthquakes and damage guidance. In the proposed seesaw motion system, which is similar to the rocking system, the building columns, in top of the foundation, have been removed and a central support and structural fuses are used around the building instead of th
Lat. Am. j. solids struct.. Publicado em: 21/03/2019
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2. Relative Motion Guidance, Navigation and Control for Autonomous Orbital Rendezvous
ABSTRACT: In this paper, the dynamics of the relative motion problem in a perturbed orbital environment are exploited based on Gauss' variational equations. The relative coordinate frame (Hill frame) is studied to describe the relative motion. A linear high fidelity model is developed to describe the relative motion. This model takes into account primary gra
J. Aerosp. Technol. Manag.. Publicado em: 2014-09
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3. Nonlocal continuum mechanics formulation for axial, flexural, shear and contraction coupled wave propagation in single walled carbon nanotubes
This paper presents the effect of nonlocal scaling parameter on the coupled i.e., axial, flexural, shear and contraction, wave propagation in single-walled carbon nanotubes (SWCNTs). The axial and transverse motion of SWCNT is modeled based on first order shear deformation theory (FSDT) and thickness contraction. The governing equations are derived based on
Lat. Am. j. solids struct.. Publicado em: 2012-08
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4. O conceito de violência de professoras do ensino fundamental.
The main objective of this study is to describe the concept of violence of a social group made up of fundamental school teachers belonging to public and private schools. In order to address different description levels, the following categories were established: class, modality and form of violence. In order to contextualize the conceptualized violence, its
Publicado em: 2007
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5. Modelagem e simulação de um girômetro sintonizado dinamicamente em um CAD eletrônico / Modeling and simulation of dynamically tuned girometer using an eletronics CAD.
The motivation of this work is the simulation of the Dry Tuned Gyroscope in the environment of an Electronics CAD. The emphasis is on the development of the loop electronics with the greatest fidelity as possible. Initially a study of the equations of motion of the sensor is made. The torquer and the pick-offs arealso modeled. The result is a transfer functi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200210
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6. Estudo de um sistema de controle ativo de precessão para foguetes de sondagem / A study of an active precession control system (SCAP) for sounding rockets.
During the flight of a spacecraft there will be various sources of perturbations, where the most expressive are jet misalignment, dynamic unbalance, stages separation, that induce a precession motion, in spite of the spin stabilization. This motion, whose amplitude is proportional to the magnitude of the perturbation, can become catastrophic, ultimately lead
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2001
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7. Estudo de um sistema de controle ativo de precessão para foguetes de sondagem / A study of an active precession control system (SCAP) for sounding rockets.
Durante o vôo de um foguete de sondagem surgem várias perturbações, sendo as mais expressivas advindas de desvio de jato, desbalanceamento dinâmico e separação de estágios, que induzem movimento de precessão sobre o veículo, apesar da estabilização por rotação. Dependendo da sua amplitude, este movimento pode ser prejudicial para uma missão es
Publicado em: 2001
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8. Identification and Genetic Analysis of Wunen, a Gene Guiding Drosophila Melanogaster Germ Cell Migration
We describe a novel genetic locus, wunen (wun), required for guidance of germ cell migration in early Drosophila development. Loss of wun function does not abolish movement but disrupts the orientation of the motion causing the germ cells to disperse even though their normal target, the somatic gonad, is well formed. We demonstrate that the product of this g
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9. In Vivo Observations of Myosin II Dynamics Support a Role in Rear RetractionV⃞
To investigate myosin II function in cell movement within a cell mass, we imaged green fluorescent protein-myosin heavy chain (GFP-MHC) cells moving within the tight mound of Dictyostelium discoideum. In the posterior cortex of cells undergoing rotational motion around the center of the mound, GFP-MHC cyclically formed a “C,” which converted to a spot as
The American Society for Cell Biology.