The International Data Centre infrasound processing system, a 25 years travel

2021 ◽  
Vol 150 (4) ◽  
pp. A178-A178
Author(s):  
Pierrick Mialle ◽  
Paulina Bittner ◽  
David Applbaum ◽  
Ronan Le Bras
2013 ◽  
Vol 427-429 ◽  
pp. 1658-1661 ◽  
Author(s):  
Xiao Jing Guo ◽  
Xue You Yang ◽  
Zhi Jing Yu

Depending on image processing system, a major sub-system in foreign object debris (FOD) detecting system on the runway, FOD image will be observed efficiently and rapidly with few economy costs and highly accuracy and reliability so as to ensure the passengers safety. The thesis analyses the characteristics and principles of wavelet transformation and applies the theory in image processing under poor visual background for identifying the FODs shape and mark characteristic point on the runway by programming in MATLAB. Besides that, it brings about profound significance for realizing the real-time detecting on the FOD and testing the feasibility and efficiency.


2017 ◽  
Vol 35 (2) ◽  
pp. 203-219 ◽  
Author(s):  
Namrata Sharma ◽  
Sumeet Gupta

This paper attempts to explore the adoption of changes introduced by an IT-intervention in the context of a social welfare scheme. Using case study methodology, we have studied the changes introduced through the project ‘CORE PDS’ (Centralized Online Real-time Electronic Public Distribution System) in the Chhattisgarh Public Distribution System (PDS). CORE PDS was a far-sighted project aimed to integrate the retailers (Fair Price Shops, FPSs) with IT infrastructure. It simultaneously introduced two changes. One was an automated transaction processing system while another was the provision of portability for the beneficiaries. After 2 years of its implementation it was observed that despite the government’s diligent efforts, only the automated transaction processing system was adopted, while portability was discarded by the FPSs. We use the theoretical lenses of stakeholder theory and agency theory for identifying reasons for this partial failure. Our analysis suggests that information system (as monitoring and reporting mechanism), outcome uncertainty, risk aversion and goal conflict play critical roles in the adoption of changes. Changes with higher monitoring, lower outcome uncertainty and lower goal conflict are easily adopted, and on the other hand, lower monitoring, greater outcome uncertainty and higher goal conflict result in lower possibility of adoption.


2008 ◽  
Vol 381-382 ◽  
pp. 233-236 ◽  
Author(s):  
Fang Jung Shiou ◽  
Y.W. Deng

A fan-shaped laser beam scanning measuring system based on the triangulation principle, was newly developed in this study to measure simultaneously the flatness and the surface roughness of a surface plate with good reflectivity after a suitable calibration. The developed system mainly consists of a micro-focus fan-shaped line laser, an image processing system, a PC-based 3-axis machine, and a PC. The height value of the object can be calculated, based on the offset between the position projected onto the object and the position projected onto the platform, after carrying out the height calibration with gauge blocks. According to the scattering theorem, a correlation between the surface roughness of the test object measured with a precision stylus instrument and the average fringe width projected onto the test object surface, has been constructed.


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