Fully Parallel Circular-Shift Rotation Network for Communication Standards

2020 ◽  
Vol 67 (12) ◽  
pp. 3412-3416
Author(s):  
Hassan Harb ◽  
Cyrille Chavet
Keyword(s):  
Author(s):  
M O Elantcev ◽  
I O Arkhipov ◽  
R M Gafarov

The work deals with a method of eliminating the perspective distortion of an image acquired from an unmanned aerial vehicle (UAV) camera in order to transform it to match the parameters of the satellite image. The normalization is performed in one of the two ways. The first variant consists in the calculation of an image transformation matrix based on the camera position and orientation. The second variant is based on matching the current frame with the previous one. The matching results in the shift, rotation, and scale parameters that are used to obtain an initial set of pairs of corresponding keypoints. From this set four pairs are selected to calculate the perspective transformation matrix. This matrix is in turn used to obtain a new set of pairs of corresponding keypoints. The process is repeated while the number of the pairs in the new set exceeds the number in the current one. The accumulated transformation matrix is then multiplied by the transformation matrix obtained during the normalization of the previous frame. The final part presents the results of the method that show that the proposed method can improve the accuracy of the visual navigation system at low computational costs.


2016 ◽  
Vol 34 (Supplement 1) ◽  
pp. e527
Author(s):  
F.J. Fanny Djuanda ◽  
Niko Sudibjo ◽  
Angela Nariswari ◽  
Gina Anindyajati ◽  
Putu Wijaya ◽  
...  

2018 ◽  
Vol 426 ◽  
pp. 589-597 ◽  
Author(s):  
Jinyu Du ◽  
Zhongming Yang ◽  
Zhaojun Liu ◽  
Guobin Fan

Author(s):  
Maura Minonzio ◽  
Dana Alon Shiffer ◽  
Mattia Bertola ◽  
Franca Dipaola ◽  
Enrico Brunetta ◽  
...  

2013 ◽  
Vol 319 ◽  
pp. 479-484
Author(s):  
Cheng Che Liu ◽  
Ta Chung Wang

Shiftwork disrupts the sleep-wake cycle, leading to sleepiness, fatigue, and performance impairment, with implications for occupational health and safety. Aircraft maintenance crews work a 24-hour shift rotation and sustain flight punctuality rate of job stress.If an error occurs during the aircraft maintenance process, this error may become a potential risk factor for flight safety.This paper focuses on optimal work shift scheduling to reduce the fatigue of aircraft maintenance crews. We model fatigue as a dynamic system, and the objective is to find the optimal shift schedules that minimize the maximum fatigue values. Various constraints such as holidays, company and government regulations are included in our model. This optimization problem is formulated as a mixed-integer program, in which the shift assignments are described by 0-1 variables. We take a sample aircraft maintenance crews schedule to demonstrate the proposed methods.


1988 ◽  
Vol 32 (13) ◽  
pp. 772-774
Author(s):  
Janie O'Connor

Non-traditional working hours are a “way of life” for those people who work a shift rotation. Laborers who work day, afternoon, and night shifts in a three week period often complain of digestive problems, a feeling of disorientation and problems with family and social relationships. Their families reported a lack of effective communication and limited involvement in traditional family celebrations/events. This paper describes the educational program which resulted from the cooperative efforts of the Minnesota Extension Service, industry, and shift workers' families. The program helped to provide some alternatives for families as they attempted to manage this stressful lifestyle.


1972 ◽  
Vol 21 (5) ◽  
pp. 398???404 ◽  
Author(s):  
Sister Lynda Ann Tooraen

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