نتایج جستجو برای: non uniformity test

تعداد نتایج: 2036396  

2012
S. Kumar T. K. Garg V. P. Wani

Oxide CMP process is used in wafer fabrication to polish dielectric films. At the advance technology nodes, due to the complexity in the circuit design, CMP requirement has increased tremendously. Pattern density variations inside the die area increase especially in the big die size codes. It creates challenges for within die uniformity. Developing a cost effective process required high polish ...

Journal: :Comput. Geom. 2006
Daniel Richardson Ahmed El-Sonbaty

The Exact Geometric Computing approach requires a zero test for numbers which are built up using standard operations starting with the natural numbers. The uniformity conjecture, part of an attempt to solve this problem, postulates a simple linear relationship between the syntactic length of expressions built up from the natural numbers using field operations, radicals and exponentials and loga...

Journal: :Journal of nuclear medicine technology 2011
Meaghan C Klempa

UNLABELLED Uniformity testing is performed daily to ensure adequate camera performance before clinical use. The aim of this study is to assess the reliability of Beth Israel Deaconess Medical Center's locally built, centralized, Web-based uniformity analysis system by examining the differences between manufacturer and Web-based National Electrical Manufacturers Association integral uniformity c...

Journal: :J. Complexity 2009
Fasheng Sun Min-Qian Liu Wenrui Hao

Factorial designs are arguably the most widely used designs in scientific investigations. Generalized minimum aberration (GMA) and uniformity are two important criteria for evaluating both regular and non-regular designs. The generation of GMA designs is a non-trivial problem due to the sequential optimization nature of the criterion. Based on an analytical expression between the generalized wo...

2008
F. A. Salah

Some scintillation camera manufactures adhere to standard code of performance specification established by National Electric Manufactures Association (NEMA). Items such as differential and integral uniformity, spatial resolution energy resolution, etc. are all calculated with reproducible methodology that allows the user reliable technique for creation of these standards to avoid any lack of cl...

2010
Sheng-Da Jiang Chia-Hao Chiu Hsin-Chieh Wu Po-Shen Lee Yun-Chih Lee

In this paper, the efficiency and uniformity improvement of non-image LED illumination system with collimator, microlens array and condenser are proposed for pico-projector. The LED light is collimated to 18 degree with efficiency 99.36% by collimator. For image uniformity and flux efficiency, the doule-side microlens array and two condensers are adopted to form a homogenizer. With this homogen...

2017
Juan Lin Ximing Wu Xiaohong Chen Yi-Ting Chen Zaichao Du Wilbert Kallenberg

We develop a specification test of predictive densities based on that the generalized residuals of correctly specified predictive density models are i.i.d. uniform. The proposed sequential test examines the hypotheses of serial independence and uniformity in two stages, wherein the first stage test of serial independence is robust to violation of uniformity. The approach of data driven smooth t...

2010
David Mix Barrington Alexis Maciel

The precise result we will prove is that the PARITY language cannot be decided by AC circuits, even if they are allowed to be of size 2 o(1) , even if they are allowed to include gates that test whether the sum of their inputs is non-zero modulo 3, and even if they are allowed to be completely non-uniform. Since the NC parity circuits are very uniform, this is more than enough to separate AC fr...

2017
Javier Gutiérrez García Jesús Rodríguez-López Salvador Romaguera

The original definition of a topological space given by Hausdorff used neighborhood systems. Lattice-valued maps appear in this context when you identify a topology with a monoid in the Kleisli category of the filter monad on SET. H?hle’s notion of a lattice-valued topology [2] uses the same idea and it’s inspired in the classical lattice-valued topologies. Ltopological spaces are motivated by ...

Journal: :journal of paramedical sciences 0
maryam mojiri radiology department, paramedical school, hamadan university of medical science, hamadan karim ghazi khanloo sani radiology department, paramedical school, hamadan university of medical science, hamadan abbas moghimbeigi department of biostatistics and epidemiology, research center for health sciences, hamadan university of medical science, hamadan

accurate interpretation of radiographic images is dependent on viewing conditions. recently the number of radiology departments has been increased so it needs to use a workstation for reporting. the aim of this study was assess monitor performance and the effect of viewing conditions on object detection. this investigation aimed to quantify the effects of changes in box brightness and ambient l...

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