نتایج جستجو برای: by geometrical positioning

تعداد نتایج: 7077804  

2014
Sergio A. Rincon Payal Bhatia Claudia Bicho Mercè Guzman-Vendrell Vincent Fraisier Weronika E. Borek Flavia de Lima Alves Florent Dingli Damarys Loew Juri Rappsilber Kenneth E. Sawin Sophie G. Martin Anne Paoletti

Proper division plane positioning is essential to achieve faithful DNA segregation and to control daughter cell size, positioning, or fate within tissues. In Schizosaccharomyces pombe, division plane positioning is controlled positively by export of the division plane positioning factor Mid1/anillin from the nucleus and negatively by the Pom1/DYRK (dual-specificity tyrosine-regulated kinase) gr...

2010
Chih-Yu Wen Fu-Kai Chan

Location-awareness is crucial and becoming increasingly important to many applications in wireless sensor networks. This paper presents a network-based positioning system and outlines recent work in which we have developed an efficient principled approach to localize a mobile sensor using time of arrival (TOA) and angle of arrival (AOA) information employing multiple seeds in the line-of-sight ...

Journal: :journal of tethys 0

today, saving and storing water are among the most critical and important issues which have attracted the world's attention. history of storing water in the form of ghanat and water reservoir by iranians goes back to ancient times. studies on this field show that benefiting from underground dams was one of the methods employed for exploiting water in past times. in countries like iran, due...

Journal: :International Journal of Biomedical Imaging 2007
Ruben Posada Christian Daul Didier Wolf Pierre Aletti

Conformal radiotherapy (CRT) results in high-precision tumor volume irradiation. In fractioned radiotherapy (FRT), lesions are irradiated in several sessions so that healthy neighbouring tissues are better preserved than when treatment is carried out in one fraction. In the case of intracranial tumors, classical methods of patient positioning in the irradiation machine coordinate system are inv...

1995
Gilles Burel Franck Bernard Wim J. Venema

| The paper describes an approach to include vision control and neural networks in the assembly process of Surface Mounted Devices (SMD). The need of vision feedback is due to the decreasing size of SMD. The proposed approach includes image processing, estimation of positioning error by a neural network, and geometrical computations. The hardware implementation to achieve real time constraints ...

Journal: :Cell 2011
David Odde

Cells of all shapes and sizes are able to calculate the location of their middles in order to divide into two during mitosis. Minc et al. (2011) and Gibson et al. (2011) now show that simple mechanical models accurately predict cleavage-plane positioning, and that geometrical interactions between neighboring cells are sufficient to generate ordered patterns of mitosis in growing epithelia.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1391

abstract: one of the most visited & important spaces in different countries by tourist are urban areas. the old tehran which major part is located in district 12 is historical showcase of the capital, but, its hiidden cultural attraction is not used as it should be. this thesis occasionally engage in studying the efficacy of correct installation of travel guide boards in welfare & easily acc...

2006
M. Ritter B. Lich

Precise sample stage positioning plays an important role for various FIB (Focused Ion Beam) and SEM (scanning electron microscope) applications in microand nanotechnology. During the last few years, FIB instruments have become an indispensable tool for sample preparation, prototyping and micro-machining. Modern FIB devices are equipped with an additional electron column. Such combined SEM/FIB d...

2011
Nima Alam Asghar Tabatabaei Balaei Andrew G Dempster

Vehicular Cooperative Positioning (CP) is a recently emerged concept to estimate or improve position information of vehicles in Vehicular Ad-Hoc Networks (VANETs). Using CP, positioning accuracy and availability is improved in the areas without (or with poor) availability of the Global Navigation Satellite System (GNSS) signals. CP is based on vehicular communication for which Dedicated Short R...

2012
DAPENG LIU

Belief propagation is a powerful procedure to perform inference, and exhibits near-optimal performance in iterative decoding/demapping. However, a complete analysis of the iterative process is still lacking, and convergence of the procedure has not proved in general cases. Information geometry offers a new view from differential geometry to understand this problem. In this thesis, we try to und...

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