Diffraction by ruled gratings with variable spacing: fundamental method of intensity calculation

2019 ◽  
Vol 58 (31) ◽  
pp. 8638
Author(s):  
S. Chatterjee ◽  
V. C. Vani ◽  
Rezvan R. Haghighi ◽  
Ravinder K. Banyal
Keyword(s):  
Intensity Calculation

scholarly journals Optimized Parallelization for Nonlocal Means Based Low Dose CT Image Processing

2015 ◽  
Vol 2015 ◽  
pp. 1-11
Author(s):  
Libo Zhang ◽  
Benqiang Yang ◽  
Zhikun Zhuang ◽  
Yining Hu ◽  
Yang Chen ◽  
...  
Keyword(s):  
Large Scale ◽  
Low Dose ◽  
Nonlocal Means ◽  
Low Dose Ct ◽  
Significant Acceleration ◽  
Weight Calculation ◽  
Artifact Suppression ◽  
Structure Similarity ◽  
Intensity Calculation ◽  
Similarity Information

Low dose CT (LDCT) images are often significantly degraded by severely increased mottled noise/artifacts, which can lead to lowered diagnostic accuracy in clinic. The nonlocal means (NLM) filtering can effectively remove mottled noise/artifacts by utilizing large-scale patch similarity information in LDCT images. But the NLM filtering application in LDCT imaging also requires high computation cost because intensive patch similarity calculation within a large searching window is often required to be used to include enough structure-similarity information for noise/artifact suppression. To improve its clinical feasibility, in this study we further optimize the parallelization of NLM filtering by avoiding the repeated computation with the row-wise intensity calculation and the symmetry weight calculation. The shared memory with fastI/Ospeed is also used in row-wise intensity calculation for the proposed method. Quantitative experiment demonstrates that significant acceleration can be achieved with respect to the traditional straight pixel-wise parallelization.

Nanomechanical Testing for Fracture of Oxide Films

2005 ◽  
Vol 20 (6) ◽  
pp. 1490-1497 ◽  
Author(s):  
K.R. Morasch ◽  
D.F. Bahr
Keyword(s):  
Stress Intensity ◽  
Oxide Films ◽  
Bending Moment ◽  
Oxide Thickness ◽  
Crack Size ◽  
Thermally Grown Oxide ◽  
Membrane Stress ◽  
Intensity Calculation ◽  
Aluminum Substrates ◽  
Depth Curve

The mechanical properties of thermally grown oxide films on various aluminum substrates were tested using nanoindentation. A sudden discontinuity, indicative of film fracture, was observed upon loading portion of the load–depth curve. The 63-nm-thick films were determined to have ultimate strengths between 4.8 and 8.9 GPa. The ultimate stress is a superposition of the bending and membrane stress. The stress intensity at fracture for each of the films was developed by approximating the resulting bending moment and various cracks sizes. At a constant ratio of crack size to oxide thickness of 0.3, the applied stress intensity at fracture of these aluminum oxide films were between 0.46 and 1.20 MPa m1/2. The residual stress in the film was assumed to be negligible in the stress intensity calculation.

Design of Large Consumer Electric Quantity Settlement System

2013 ◽  
Vol 380-384 ◽  
pp. 3103-3106
Author(s):  
Fan Jin Zeng ◽  
Li Ding ◽  
Kai He You
Keyword(s):  
Structural Design ◽  
Logical Structure ◽  
Settlement System ◽  
Labour Intensity ◽  
Basic Work ◽  
Mathematical Formulas ◽  
Intensity Calculation ◽  
Electric Enterprises ◽  
Electric Quantity ◽  
To Receive

Having a good electric quantity settlement of large consumer is the basic work of electric power enterprises to receive fee in time and ensure the electricity supply. For the conditions that great labour intensity, calculation inaccurate, not timely settlement of traditional manual electric quantity settlement, this paper designs automatic electric settlement system. First, design database and logical structure based on the concept structural design with E-R diagram. Then, research the twelve mathematical formulas used by large consumer electric quantity settlement. Finally, describe the process of electric quantity settlement in natural language. The content of this study, aims to play the superiority of computer system, improve the informationize level of electric enterprises. And provide a practical technology and guidelines for the majority of electric enterprises and developers to develop large consumer settlement system.

scholarly journals Peak Ground Acceleration and Earthquake Intensity Microzonation in Watukumpul, Pemalang Regency

2019 ◽  
Vol 3 (2) ◽  
pp. 60
Author(s):  
Urip Nurwijayanto Prabowo ◽  
Ayu Fitri Amalia ◽  
Widodo Budhi
Keyword(s):  
Peak Ground Acceleration ◽  
Spectral Ratio ◽  
Ratio Method ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Predominant Period ◽  
The North ◽  
Central Java ◽  
Intensity Calculation ◽  
Microtremor Measurements

Watukumpul is located in Pemalang District, Central Java, which is adjacent to the fault seismotectonic line of Baribis fault in the north and subduction area of the Eurasian and Indies-Australian plates in the south. It makes Watukumpul often experiences an earthquake. This study aimed to map the peak ground acceleration calculated using the Kanai equation and earthquake intensity calculated using Wald equations in Watukumpul. This study used historical earthquake data occurred in 1988-April 2018 from the International Seismological Center and microtremor measurements of 33 points. Microtremor data were processed using the Horizontal to Vertical Spectral Ratio method and resulted the predominant period of study area ranged from 0.13 to 0.74 s. The results showed that the study area had a PGA value of 26.93 - 63.25 gal. The intensity calculation showed that the study area has the potential for earthquake damage with an III-IV MMI scale. Keywords: Kanai, Watukumpul, Intensity, Earthquake

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