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A rudimentary problem in wireless sensor networks is localization – the determination of the geographical locations of sensors. Most existing localization algorithms were de signed to work well either in networks of static sensors or networks in which all sensors are mobile. We think over the problem of estimating the geographic locations of nodes in a(More)
OBJECTIVE To find out the current coverage of antiretroviral therapy (ART) among HIV positive subjects and to identify the major influential factors associated with the participation in ART among them. METHODS 291 HIV positive subjects from 6 methadone maintenance treatment (MMT) clinics in Guangxi and Yunnan province were surveyed by questionnaires. (More)
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