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Water retention areas are major natural elements of an urban area. These areas have different functions of the physical environment. In Dhaka, these retention areas are encroached by different land development activities. In the recent years, water logging, drainage congestion and different types of problems have been generated by unplanned urban development. This study was conducted to estimate the change in the retention area the in eastern part of Dhaka over a period of last 15 years based on satellite images. Three different satellites images (Landsat TM, Landsat ETM Plus and IKONOS) have...

Vulnerable groups (commercial sex workers, truck drivers, truck helpers, daily laborers, rickshaw pullers and drug users) were studied on HIV/AIDS information at Dhaka city and surrounding areas. Mass media was correlated in this research with knowledge on HIV/AIDS transmission and prevention (r = 0.22, p<0.05). Majority of respondents had radio (74%) and television (63.3%). 72.5% respondent never read newspaper and 55% never watch billboard but 31.7% watch television everyday. 95% respondents heard about the name of HIV/AIDS but none of them knew the full meaning of HIV or AIDS, and 87%...