نتایج جستجو برای: orbital frame

تعداد نتایج: 140863  

2006
Patrick D. Higgins Bruce J. Gerbi Mark Macedon Kathryn E. Dusenbery

In this report we discuss the application of a modified Gill-Thomas-Cosman (GTC) relocatable head frame to enable fractionated stereotactic radiotherapy (SRT) of infants under anesthesia. This system has been used to treat two infants, ages 12 and 18 months for bilateral retinoblastoma on a Varian 6/100 linear accelerator. The GTC head frame was used to reproduceably position and treat the orbi...

Extending and improving the concepts: woven frame and fusion frames, we introduce the notion of woven fusion frames in Hilbert spaces. We clarify our extension and generalization by some examples of woven frames and woven fusion frames. Also, we present some properties of woven fusion frames, especially we show that for given two woven frames of sequences, one can build woven fusion frames and ...

Journal: :Chinese Physics C 2022

Abstract We investigate quantum kinetic theory for a massive fermion system under rotational field. From the Dirac equation in rotating frame we derive complete set of equations spin components 8- and 7-dimensional Wigner functions. While particles are no longer on mass shell general case due to rotation–spin coupling, there always only two independent components, which can be taken as number d...

2017
Saikat Sengupta David S. Smith Alex K. Smith E. Brian Welch Seth A. Smith

Purpose The eye and its accessory structures, the optic nerve and the extraocular muscles, form a complex dynamic system. In vivo magnetic resonance imaging (MRI) of this system in motion can have substantial benefits in understanding oculomotor functioning in health and disease, but has been restricted to date to imaging of static gazes only. The purpose of this work was to develop a technique...

2015
M. GIARDA A. TAVOLACCINI F. ARCURI M. BRUCOLI A. BENECH

Isolated bilateral orbital floor fractures are uncommon and are rarely described in the scientific literature. They are usually seen in association with naso-ethmoidal fractures, zygomatic fractures, or fractures of the middle third. We report our experience in the management of a patient presenting bilateral isolated orbital floor fracture. The difficulties in management of these fractures are...

Journal: :Physical review letters 2016
Ming-Ming Liu Min Li Chengyin Wu Qihuang Gong André Staudte Yunquan Liu

We study the phase structure of the tunneling wave packets from strong-field ionization of molecules and present a molecular quantum-trajectory Monte Carlo model to describe the laser-driven dynamics of photoelectron momentum distributions of molecules. Using our model, we reproduce and explain the alignment-dependent molecular frame photoelectron spectra of strong-field tunneling ionization of...

1996
Slava G. Turyshev John D. Anderson Ronald W. Hellings

Due to its relatively large eccentricity and proximity to the Sun, Mercury’s orbital motion provides one of the best solar-system tests of relativistic gravity. We emphasize the number of feasible relativistic gravity tests that can be performed within the context of the parameterized weak field and slow motion approximation a useful framework for testing modern gravitational theories in the so...

2007
M. Britsch C. J. Clarke

We investigate the orbital evolution of planetesimals in a self-gravitating circumstellar disc in the size regime (∼ 1 − 5000 km) where the planetesimals behave approximately as test particles in the disc’s non-axisymmetric potential. We find that the particles respond to the stochastic, regenerative spiral features in the disc by executing large random excursions (up to a factor of two in radi...

Journal: :نشریه دانشکده فنی 0
دکتر ناصر رضایی مجید صدری

every digital transmission system requires frame alignment. it is necessary to identify the varius signal componets and to bring receiver into phase with respect to the transmission format so that the digits can be properly assembled for demultiplexing. fast and reliable frame alignmant is important, and therefore has been a subject for study. this paper a comprehensive analysis of frame alignm...

2013
Yumei Li Gerald Lip Vincent Chong Jianhua Yuan Zhongxiang Ding

BACKGROUND The aim of this retrospective study was to document the clinical findings and radiological features of idiopathic orbital inflammation syndrome with retro-orbital involvement. METHODS We searched for ophthalmological patients who received orbital imaging at Zhejiang Provincial People's Hospital between October 2003 and April 2010. Seventy-three patients were diagnosed with idiopath...

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