Minimum Time Problem for n×n Co-operative Hyperbolic Lag Systems
Hussein El-Saify,
Mohammed Shehata
Issue:
Volume 3, Issue 1, February 2017
Pages:
1-11
Received:
17 December 2016
Accepted:
30 December 2016
Published:
30 March 2017
Abstract: In this paper, a minimum time problem for n×n co-operative hyperbolic systems involving Laplace operator and with time-delay is considered. First, the existence of a unique solution of such hyperbolic system with time-delay is proved. Then necessary conditions of a minimum time control are derived in the form of maximum principle. Finally the bang-bang principle and the approximate controllability conditions are investigated.
Abstract: In this paper, a minimum time problem for n×n co-operative hyperbolic systems involving Laplace operator and with time-delay is considered. First, the existence of a unique solution of such hyperbolic system with time-delay is proved. Then necessary conditions of a minimum time control are derived in the form of maximum principle. Finally the bang-...
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Social, Biology and Economic Life of Children Links on Street-Begging in Bangladesh: A Cross-Cultural Multivariate Analysis
Md Kamruzzaman,
Md Abdul Hakim
Issue:
Volume 3, Issue 1, February 2017
Pages:
12-19
Received:
21 February 2017
Accepted:
18 March 2017
Published:
14 April 2017
Abstract: The study was conducted at four upazilas in Dhaka city of Bangladesh taking 70.73% boys and 29.29% girls using convenience sampling method. About 41.46% respondents were 2501-3000 BDT, 9.75% were 1001-1500 BDT and 3001-3500 BDT earners having 82.92% respondents no link with other occupations. Some 53.66% fathers of the respondents were rickshaw pullers, 17.07% farmers and beggars as well as 46.34% mothers of respondents were housewives, 26.83% beggars and day labors in occupation. About 60.97% respondents came in begging from the slums and 63.41% respondents adopt begging due to their poverty and 34.15% were forced beggars.
Abstract: The study was conducted at four upazilas in Dhaka city of Bangladesh taking 70.73% boys and 29.29% girls using convenience sampling method. About 41.46% respondents were 2501-3000 BDT, 9.75% were 1001-1500 BDT and 3001-3500 BDT earners having 82.92% respondents no link with other occupations. Some 53.66% fathers of the respondents were rickshaw pul...
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