نتایج جستجو برای: resolution method

تعداد نتایج: 1858867  

پایان نامه :0 1370

all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...

Hasanlou, Mahdi, Seydi, Seyed Teimoor ,

  The earth is continually being influenced by some actions such as flood, tornado and human artificial activities. This process causes the changes in land cover type. Thus, for optimal management of the use of resources, it is necessary to be aware of these changes. Today’s remote sensing plays key role in geology and environmental monitoring by its high resolution, wide covering and low cost...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ادبیات و زبانهای خارجی 1393

for several years, researchers in familiarity of efl teachers with post-method and its role in second and foreign language learners’ productions have pointed out that the opportunity to plan for a task generally develops language learners’ development (ellis, 2005). it is important to mention that the critical varies in language teaching was shown is the disappearances of the concept of method ...

Journal: :journal of computer and robotics 0
sara salkhordeh department of electrical, biomedical and mechatronic engineering, qazvin branch, islamic azad university, qazvin, iran hamidreza rashidy kanan department of electrical, biomedical and mechatronic engineering, qazvin branch, islamic azad university, qazvin, iran

the goal of multi-frame super resolution (sr) is to fuse multiple low resolution (lr) images to produce one high resolution (hr) image. the major challenge of classic sr approaches is accurate motion estimation between the frames. to handle this challenge, fuzzy motion estimation method has been proposed that replaces value of each pixel using the weighted averaging all its neighboring pixels i...

Journal: :iranian journal of radiation research 0
a. jomehzadeh medical physics department, isfahan university of medical sciences, isfahan, iran p. shokrani medical physics department, isfahan university of medical sciences, isfahan, iran m. mohammadi medical physics department, hamadan university of medical sciences, hamadan, iran a. amouheidari radiation oncology department, isfahan milad hospital, isfahan, iran

background: electronic portal imaging devices (epids) play an important role in radiation therapy portal imaging, geometric and dosimetric verifications. a successful utilization of epids for imaging and dosimetric purposes requires a reliable quality control process routine to be carried out regularly. in this study, two in-house phantoms were developed and analyzed for implementation in a qua...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان 1392

in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...

Journal: :نشریه پرستاری ایران 0
سلوا نیکپور nikpoor, s

most of the patients imagine that chest pain is not sign of heart attack. but, may be pain is not sign of heart attack. pain source may be from pulmonary, stomach, intestinal, psychologic or musculoskeletal problems. from these factors, when two or more factors combine to each other, similar signs are happen. all of these factors harden diagnosis of chest pain reason. only with separation of pe...

Journal: :فیزیک زمین و فضا 0
یوسف محمدی دانش آموخته کارشناسی ارشد ژئوفیزیک، دانشگاه تحصیلات تکمیلی صنعتی کرمان، ایران حمیدرضا سیاه کوهی استاد، گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران

spectral decomposition or time-frequency representation (tfr) is a powerful tool for analyzing time varying nature of seismic data. mapping of a one dimensional seismic time trace to a two dimensional function of time and frequency reveals some characteristics of seismic signals that are not available in only time or frequency representations. this approach has been widely used in seismic explo...

Mokhtarzade, Mehdi , Sahebi, Mahmod Reza , Valadan Zoej, Mohammad Javad , Yavari , Somayeh ,

  Along with commercial accessibility of high resolution satellite images in recent decades, the issue of extracting accurate 3D spatial information in many fields became the centre of attention and applications related to photogrammetry and remote sensing has increased. To extract such information, the images should be geo-referenced. The procedure of georeferencing is done in four main steps...

The mathematical modeling of the large deflections for the cantilever beams leads to a nonlinear differential equation with the mixed boundary conditions. Different numerical methods have been implemented by various authors for such problems. In this paper, two novel numerical techniques are investigated for the numerical simulation of the problem. The first is based on a spectral method utiliz...

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