نتایج جستجو برای: levelling data are 46cm without any applying correction surface however

تعداد نتایج: 7521878  

2017
Hong Ren Wei Lin Xianjun Ding

OBJECTIVE To evaluate the clinical application of phased-array surface coil intensity correction in magnetic resonance imaging (MRI) in spinal metastases. METHODS 3 phantoms and 50 patients with a corresponding total number of 80 spinal metastases were included in this study. Fast spin echo T1- and T2- weighted MRI with and without surface coil intensity correction was routinely performed for...

2003
Jiangping Liu Jianghai Xia Chao Chen

The application of the seismic reflection method is often limited in complex terrain areas. The problem is the incorrect correction of time-shifts caused by topography. To apply normal moveout (NMO) correction to reflection data correctly, static corrections are necessary to be applied in advance for the compensation of the time distortions of topography and the time-delays from near-surface we...

2012
M. S. FILMER C. HIRT W. E. FEATHERSTONE

Gravity-based heights require gravity values at levelled benchmarks (BMs), which sometimes have to be predicted from surrounding observations. We use EGM2008 and the Australian National Gravity Database (ANGD) as examples of model and terrestrial observed data respectively to predict gravity at Australian national levelling network (ANLN) BMs. The aim is to quantify errors that may propagate in...

2007
Graham D. Finlayson

The colors a camera sees depends on the color of the viewing illuminant and, unless corrected, this leads to poor color reproduction. There are two strategies to color correction: constrained and unconstrained. The constrained methods rely on simplifying assumptions about the world (e.g. there is a white reeectance is in every scene). If the assumptions hold then good correction is possible but...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده حقوق 1389

if the precise implementation of the principle of proportion and:balance between the violation and the penalty as well as the other dimensions could be considered as a stick yard for the imptementation of justice any lack of preciseness in carrying out such principle would not indeed be much too far from injustice . naturally ,if it would be imagined that the objective of balance between...

Abdorreza Safari Yahyallah Tavakkoli

The problem of downward continuation of the gravity field from the Earth’s surface to the reference ellipsoid arises from the fact that the solution to the boundary value problem for geoid determination without applying Stokes formula is sought in terms of the disturbing potential on the ellipsoid but the gravity observations are only available on the Earth’s surface. Downward continuation is a...

Bus systems are unstable without considering any control. Thus, we are able to consider some control strategies to alleviate this problem. A holding control strategy is one commonly used real-time control strategy that can improve service quality. This paper develops a mathematical model for a holding control strategy. The objective of this model is to minimize the total cost related to passeng...

بابک صابری شهر بابکی, , حمید بهتاش, , دکتر بهروز اکبرنیا, , سید محمد فرشته نژاد, , محمد صالح گنجویان, ,

Background: The currently accepted treatment of scoliosis are bracing and surgery. Two-stage anterior and posterior spinal fusion is used to correct scoliosis. It seems that the application of a longitudinal force to the axis of the spinal column as a means of stabilizing by halo traction, may increase the correction of the curve. The aim of this study was to evaluate the effect of halo tractio...

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