نتایج جستجو برای: flat panel imagers

تعداد نتایج: 142414  

2015
Alexander Popov

Using a unique survey database of 8265 firms from 25 transition economies, I find that lack of access to finance in general, and to bank credit in particular, is associated with significantly lower investment in on-the-job training. This effect is stronger in education-intensive industries and in industries facing good global growth opportunities. To address endogeneity issues, I use the struct...

2003
JENNIFER W. SPENCER J. W. Spencer

This paper explores the relationship between firms’ strategies to share knowledge with their innovation system and innovative performance. The empirical analysis showed that many firms designed strategies to share technological knowledge with competitors, and those firms that shared knowledge with their innovation system earned higher innovative performance than firms that did not share knowled...

2007
M. B. GERRARD T. J. SUMNER

The effect of introducing a fifth large-scale space-time dimension to the equations of orbital dynamics was analysed in an earlier paper by the authors. The results showed good agreement with the observed flat rotation curves of galaxies. This analysis did not require the modification of Newtonian dynamics, but rather only their restatement in a five dimensional framework. The same analysis der...

Journal: :Journal of the Japan Society for Aeronautical and Space Sciences 1988

2004
John L. Davy

The radiation efficiency of an infinite flat panel which is radiating an infinite plane wave into an infinite half space can be shown to be equal to the inverse of the cosine of the angle between the direction of propagation of the plane wave and the normal to the panel. The fact that this radiation efficiency tends to infinity as the angle tends to 90° causes problems with simple theories of s...

2005
Gregory P. Crawford

The manufacturing of flat panel displays is a dynamic and continuously evolving industry. Improvements of flat panel displays are made rapidly as technology improves and new discoveries are made by display scientists and engineers. The cathode ray tube and active matrix liquid crystal display (LCD) recently celebrated their 100th and 25th anniversary, respectively. The arrival of portable elect...

Journal: :Medical physics 2000
D A Jaffray J H Siewerdsen

The development and performance of a system for x-ray cone-beam computed tomography (CBCT) using an indirect-detection flat-panel imager (FPI) is presented. Developed as a bench-top prototype for initial investigation of FPI-based CBCT for bone and soft-tissue localization in radiotherapy, the system provides fully three-dimensional volumetric image data from projections acquired during a singl...

2016
Li Jiang Zhihui Li

China’s urbanization has resulted in significant changes in agricultural land use. However, understanding of the linkages between urbanization and fertilizer use intensity is limited. Using county-level panel data for Henan Province, 1995–2008 and panel econometric models, we investigate the impact of urbanization and other socioeconomic factors on fertilizer use intensity, with a focus on the ...

Journal: :AJR. American journal of roentgenology 2006
Klaus Bacher Peter Smeets Ludo Vereecken An De Hauwere Philippe Duyck Robert De Man Koenraad Verstraete Hubert Thierens

OBJECTIVE The aim of this study was to compare the image quality and radiation dose in chest imaging using an amorphous silicon flat-panel detector system and an amorphous selenium flat-panel detector system. In addition, the low-contrast performance of both systems with standard and low radiation doses was compared. MATERIALS AND METHODS In two groups of 100 patients each, digital chest radi...

2003
George Mavrotas

The paper uses different measures of financial sector development for a dynamic heterogeneous panel of 17 African countries to examine the impact of financial sector development on private savings. An innovative econometric methodology is also employed related to a series of cointegration tests within a panel. This is an important contribution since traditional panel data analysis adopted in pr...

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