Quasi-static analysis of an optically illuminated directional coupler

1997 ◽  
Vol 45 (8) ◽  
pp. 1351-1357 ◽  
Author(s):  
A.M.E. Safwat ◽  
D.A.M. Khalil ◽  
H. Elhennawy ◽  
H.F. Ragaie
Keyword(s):  
Static Analysis ◽  
Directional Coupler

Structured methods for improving flow measurement accuracy in pipelines

2020 ◽  
pp. 30-35
Author(s):  
Gurami N. Akhobadze
Keyword(s):  
Flow Measurement ◽  
Measurement Accuracy ◽  
Directional Coupler ◽  
Signal To Noise Ratio ◽  
Scattered Wave ◽  
Orthogonal Polarization ◽  
Flow Sensors ◽  
Information Signal ◽  
Mass Flows ◽  
Processing Device

In the age of digital transformation of production processes in industry and science the development and design of intelligent flow sensors for granular and liquid substances transferring through pipelines becomes more important. With this in view new approaches for improving the accuracy of microwave flowmeters are proposed. Taking into account the characteristics ofelectromagnetic waves propagating through a pipeline, a wave scattered by inhomogeneities of the controlled medium is analyzed. Features of the transformation of the polarized scattered wave limiting the geometric dimensions of the pipeline and optimizing the values of the useful scattered signal are revealed. Expediency of collection of the information signal with orthogonal polarization of the scattered wave and through a directional coupler is substantiated. The method of estimating the measurement accuracy with reference to the signal-to-noise ratio at the input of the processing device is given. The research results can be used in cryogenic machine engineering to measure volume and mass flows of liquid cryogenic products.

Effects of openings on the seismic behavior and performance level of concrete shear walls

2019 ◽  
Author(s):  
Hossein Alimohammadi ◽  
Mostafa Dalvi Esfahani ◽  
Mohammadali Lotfollahi Yaghin
Keyword(s):  
Static Analysis ◽  
Cross Section ◽  
Seismic Behavior ◽  
Shear Walls ◽  
Shear Wall ◽  
Constant Cross Section ◽  
Added Resistance ◽  
Different Shapes ◽  
And Performance ◽  
Abaqus Software

In this study, the seismic behavior of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover). These case studies modeled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

Design and measurement of broadband loop mirror with curved directional coupler based on Si waveguides

2020 ◽  
Vol 59 (11) ◽  
pp. 112002
Author(s):  
Takuya Mitarai ◽  
Eissa Moataz ◽  
Takayuki Miyazaki ◽  
Tomohiro Amemiya ◽  
Nobuhiko Nishiyama
Keyword(s):  
Directional Coupler ◽  
Loop Mirror

Static Analysis Based Correctness Verification for Mandatory Access Control Framework

2009 ◽  
Vol 32 (4) ◽  
pp. 730-739 ◽  
Author(s):  
Xin-Song WU ◽  
Zhou-Yi ZHOU ◽  
Ye-Ping HE ◽  
Hong-Liang LIANG ◽  
Chun-Yang YUAN
Keyword(s):  
Access Control ◽  
Static Analysis ◽  
Mandatory Access Control ◽  
Control Framework

Regional and industry characteristics of trade and economic cooperation of the EEU countries

2018 ◽  
Vol 35 (3) ◽  
pp. 140-148
Author(s):  
P. M. Taranov ◽  
A. N. Gerasimov
Keyword(s):  
International Trade ◽  
Static Analysis ◽  
Economic Cooperation ◽  
Regional Structure ◽  
Trade Study ◽  
Structure Of Trade

In the paper, trends and patterns of development of trade and economic cooperation of the EEU countries are analyzed. The authors, based on the economic-static analysis of international trade, study the features of the transformation of the commodity and regional structure of trade. Conclusions are drawn about the reasons for the existing features and trends in the development of intraregional economic cooperation.

Simplified Analysis and Applications of Single Mode Active Directional Coupler with Parallel Electrodes

2009 ◽  
Vol 19 (1) ◽  
pp. 47-62
Author(s):  
Adel l Zaghlou ◽  
Rasheed El-Awady ◽  
Sayed Kamel ◽  
Sohair Mahfouz
Keyword(s):  
Directional Coupler ◽  
Single Mode ◽  
Simplified Analysis
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