Against the deficiencies of component-based software(CBS) reliability modeling and analysis,for instance,importing too many assumptions,paying less attention to debugging process without considering imperfect debuggin...Against the deficiencies of component-based software(CBS) reliability modeling and analysis,for instance,importing too many assumptions,paying less attention to debugging process without considering imperfect debugging and change-point(CP) problems adequately,an approach of CBS reliability process analysis is proposed which incorporates the imperfect debugging and CP.First,perfect/imperfect debugging and CP are reviewed.Based on the queuing theory,a multi-queue multichannel and infinite server queuing model(MMISQM) is presented to sketch the integration test process of CBS.Meanwhile,considering the effects of imperfect debugging and CP,expressions for fault detection and correction are derived based on MMISQM.Numerical results demonstrate that the proposed model can sketch the integration test process of CBS with preferable performance which outperforms other models.展开更多
Objective： A questionnaire for the compliance with moxibustion was designed based on the 4-item Morisky scale, and the reliability and validity of the questionnaire was investigated. Methods： A modified Morisky scal...Objective： A questionnaire for the compliance with moxibustion was designed based on the 4-item Morisky scale, and the reliability and validity of the questionnaire was investigated. Methods： A modified Morisky scale was designed based on the 4-item Morisky scale for the compliance with moxibustion, and 146 patients having received moxibustion for over 2 weeks were investigated using this scale to evaluate their compliance with moxibustion; the internal equity and the construct validity of the scale were statistically analyzed. Results： The analysis of reliability showed that in item of internal consistency, the Cronbach＇s α was 0.72 and the split-half coefficient was 0.71, the correlation coefficients between the 4 component scores and the total score ranged 0.67-0.80, and the between-component correlation coefficients ranged 0.24-0.56; the exploratory factor analysis（EFA） totally extracted 1 common factor, and the explicable variation was 55.02%, and the loads of the 4 items were respectively 0.82, 0.81, 0.74 and 0.58. Conclusion： The reliability and validity of the modified Morisky scale for the compliance with moxibustion are acceptable, while several items need further modification and improvement in the expression and content.展开更多
On the theory basic of on-condition maintenance, prior work of confirming on-condition maintenance interval is analyzed, and methods respectively concering usability and costs are provided, before modifying suggestion...On the theory basic of on-condition maintenance, prior work of confirming on-condition maintenance interval is analyzed, and methods respectively concering usability and costs are provided, before modifying suggestions after confirming preliminarily intervals is offered, and application examples are also given.展开更多
基金Supported by the National High Technology Research and Development Program of China(No.2008AA01A201)the National Natural ScienceFoundation of China(No.60503015)+1 种基金the National Key R&D Program of China(No.2013BA17F02)the Shandong Province Science andTechnology Program of China(No.2011GGX10108,2010GGX10104)
文摘Against the deficiencies of component-based software(CBS) reliability modeling and analysis,for instance,importing too many assumptions,paying less attention to debugging process without considering imperfect debugging and change-point(CP) problems adequately,an approach of CBS reliability process analysis is proposed which incorporates the imperfect debugging and CP.First,perfect/imperfect debugging and CP are reviewed.Based on the queuing theory,a multi-queue multichannel and infinite server queuing model(MMISQM) is presented to sketch the integration test process of CBS.Meanwhile,considering the effects of imperfect debugging and CP,expressions for fault detection and correction are derived based on MMISQM.Numerical results demonstrate that the proposed model can sketch the integration test process of CBS with preferable performance which outperforms other models.
基金supported by National Basic Research Program of China,973 Program~~
文摘Objective： A questionnaire for the compliance with moxibustion was designed based on the 4-item Morisky scale, and the reliability and validity of the questionnaire was investigated. Methods： A modified Morisky scale was designed based on the 4-item Morisky scale for the compliance with moxibustion, and 146 patients having received moxibustion for over 2 weeks were investigated using this scale to evaluate their compliance with moxibustion; the internal equity and the construct validity of the scale were statistically analyzed. Results： The analysis of reliability showed that in item of internal consistency, the Cronbach＇s α was 0.72 and the split-half coefficient was 0.71, the correlation coefficients between the 4 component scores and the total score ranged 0.67-0.80, and the between-component correlation coefficients ranged 0.24-0.56; the exploratory factor analysis（EFA） totally extracted 1 common factor, and the explicable variation was 55.02%, and the loads of the 4 items were respectively 0.82, 0.81, 0.74 and 0.58. Conclusion： The reliability and validity of the modified Morisky scale for the compliance with moxibustion are acceptable, while several items need further modification and improvement in the expression and content.
文摘On the theory basic of on-condition maintenance, prior work of confirming on-condition maintenance interval is analyzed, and methods respectively concering usability and costs are provided, before modifying suggestions after confirming preliminarily intervals is offered, and application examples are also given.
