Da-Hai Zhao

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BACKGROUND National Breast and Cervical Cancer Early Detection Program (NBCCEDP) has provided free or low-cost mammograms to low-income or no health insurance women in all of the states of the United States (US) since 1997. The objective of this study was to understand whether health insurance and annual household income impacted the mammography utilization(More)
BACKGROUND According to the regulations of the Chinese and Shanghai governments, migrant workers employed in Shanghai should all be entitled to Shanghai Migrant Worker Hospitalization Insurance (SMWHI) without premium and the vast majority should also have the New Rural Cooperative Medical System (NRCMS). This study aimed to examine the status of the(More)
OBJECTIVE To study tuberculosis related knowledge among the floating population who work in service enterprises in Changning District, Shanghai. METHODS A self-completed questionnaire interview was conducted in Nov. 2003 among 274 floating persons who were recruited through cluster sampling in Changning District (male 113, female 161). RESULTS It was(More)
BACKGROUND Patient trust in physicians, which can be considered a collective good, is necessary for an effective health care system. However, there is a widespread concern that patient trust in physicians is declining under various threats to the physician-patient relationship worldwide. This article aimed to assess patient trust in physicians through a(More)
Based on the fuzzy logic of the Takagi-Sugeno (T-S) model and the bang-bang control law, a fuzzy sub-optimal bang-bang control method is presented in this paper. Genetic algorithm is used to determine the optimal control force in the T-S model. The relative performance index is utilized as the objective function. A building structure with a semi-active(More)
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