Bøger af Raquib Ahmed

This book focuses on the transformation of Bangladesh in respect to its people, geography, economy and environment. The authors discuss current problems such as vulnerability caused by environmental degradation in Bangladesh but also opportunities of this rapidly changing country. The book explains how the country is rapidly transforming from a rural subsistence agrarian based economic system to a new economic partner contributing to global processes. Bangladesh is presented as an example for the changes in the Global South, where a mismatch is often observed in linking resources and activities with environmental sustainability, possibly due to insufficient base-line knowledge. As faster growth is marginalizing resources to increase the GDP, the sustainability of resource exploitation is being questioned. The authors describe the vulnerable situation caused by possible sea-level rise, soil degradation, biodiversity loss, climate extremities, urbanization, and population displacement. This volume offers comprehensive knowledge about the geography and environment of Bangladesh and aims to help readers further investigate the issues and work on solutions. The book appeals to academics, professionals and students at all levels interested in Bangladesh as well as environmental problems and geographical issues in a rapidly transforming country.

Every day, we are using up our limited natural resources to meet the daily demands of our expanding world of technology. Starting from running cars to cooking foods, everything is depleting our reserve of natural energy sources and the days are not far ahead when they will no longer be available in abundance. This has forced all the nations to look for alternate source of energy and one of the solutions is to harvest the massive amount of unlimited energy from the sun. Despite all the researches, a major problem still remains and that is the inefficiency of the solar panels which even worsens by the concept of keeping them fixed. To overcome the problem, we developed a prototype of a two axes sun tracking mechanism that will track the movement of the sun as it moves from east to west. This will allow the solar panel to accumulate more energy from the sun. Bangladesh, being a tropical country, receives sunlight mostly throughout the year making it an ideal spot for harvesting solar energy. The prototype developed was successful in it purpose and experimentally, it was proven that the two axes tracking system is more efficient compared to the fixed system.