نتایج جستجو برای: ژیروسکوپ کنترلممان cmg

تعداد نتایج: 610  

2015
Roxana E Georgescu Grant D Schauer Nina Y Yao Lance D Langston Olga Yurieva Dan Zhang Jeff Finkelstein Mike E O'Donnell

We have reconstituted a eukaryotic leading/lagging strand replisome comprising 31 distinct polypeptides. This study identifies a process unprecedented in bacterial replisomes. While bacteria and phage simply recruit polymerases to the fork, we find that suppression mechanisms are used to position the distinct eukaryotic polymerases on their respective strands. Hence, Pol ε is active with CMG on...

2012
Amit Sanyal Sasi Prabhakaran Frederick Leve

The attitude dynamics of a spacecraft with a variable speed control moment gyroscope (CMG), in the presence of conservative external inputs, are derived using variational principles. A complete dynamics model, that relaxes some of the assumptions made in prior literature on control moment gyroscopes, is obtained. These dynamics equations show the complex nonlinear coupling between the internal ...

2011
T. Miura J. P. Turner

In this study, we used a set of hyperspectral Hyperion scenes and assessed the effects of differing spectral and spatial resolutions on MODIS-AVHRR vegetation index (VI) continuity. Hyperion scenes were processed to simulate atmospherically-corrected normalized difference vegetation index (NDVI) and 2-band enhanced vegetation index (EVI2) values at MODIS Climate Modeling Grid (CMG) and AVHRR Gl...

2004
V. J. Lappas WH Steyn C. I. Underwood

In this paper a new practical Attitude Control System is proposed, based on Control Moment Gyroscopes (CMG). These actuators can provide unique torque, angular momentum and slew rate capabilities to small satellites without any increase in power, mass or volume. This will help small satellites become more agile and maneuverable. Agility considerably increases the operational envelope and effici...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده مهندسی مکانیک 1392

در این پایاننامه به بررسی اصول علمی ، طراحی و بهینه سازی مهندسی ژیروسکوپ های ارتعاشی میکروالکترومکانیکی memsپرداخته می شود. این پایان نامه پس از مروری مختصر بر فناوریmemsبه بررسی پارامتر های مهم در ساختار این نوع از وسایل می پردازد ودر ادامه ژیروسکوپ های ارتعاشی معرفی شده و به اصول طراحی کلی و عمومی مکانیکی و الکتریکی ژیروسکوپ های ارتعاشیmemsپرداخته می شود. مسئله انطباق مد های تحریک و تشخیص، عو...

2017
Sung Dae Kim Kang Jun Cho Joon Chul Kim

BACKGROUND This study investigated changes in the expression of cannabinoid (CB) receptors and the effects of CB1 and CB2 agonists on detrusor overactivity (DO) associated with bladder outlet obstruction (BOO) in rats. METHODS Male Sprague Dawley rats were randomly assigned to four groups (n = 10) in each group. The control group comprised sham-operated rats. A animals in the BOO, CB1 agonist...

Journal: :International Journal of Robust and Nonlinear Control 2021

In this article, we present a virtual control contraction metric (VCCM) based nonlinear parameter-varying approach to design state-feedback controller for moment gyroscope (CMG) track user-defined trajectory set. This VCCM (NL) stabilization and performance synthesis approach, which is similar linear (LPV) approaches, allows achieve exact guarantees of exponential stability -gain on NL systems ...

Journal: :EMBO reports 2014
Armelle Lengronne Philippe Pasero

The initiation of eukaryotic DNA replication is a highly regulated process conserved from yeast to human. The past decade has seen significant advances in understanding how the CMG (Cdc45‐MCM‐GINS) replicative helicase is loaded onto DNA. However, very little was known on how this complex is removed from chromatin at the end of S phase. Two papers in a recent issue of Science [1], [2] show that...

2011
Y. S. Chauhan D. D. Lu

FinFET and UTBSOI (or ETSOI) FET are the two promising multi-gate FET candidates for sub-22nm CMOS technology. The BSIM-CMG and BSIM-IMG are the surface potential based physical compact models for multi-gate MOSFETs. The BSIM-CMG model has been developed to model common symmetric double, triple, quadruple and surround gate MOSFET. The BSIM-IMG model has been developed to model independent doubl...

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