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Depending on some assumptions, a survey study on the concept of law state was conducted, and the results of which were evaluated using an analytical method. Before the empricial analysis was undertaken, the historicial process of how law state concept developed was explained. When preparing the survey, the concept of law state was categorized based on theory, then questions regarding these categories were generated. The results of the survey were presented in 17 tables, then within and across table results were discussed. [ABSTRACT FROM AUTHOR]

Global climate change is now accepted to be the most serious environmental threat facing human race. One of the solution of the problem is improving renewable energy sources. Many countries see the development of renewable energy as a way of mitigation climate change. At this stage , to understand renewable energy development potential haz become very important. Thus, This paper argues the contribution of renewable energy sources with mitigation global warming. Each source is examined independently the others from perspective of progress in short and long term. [ABSTRACT FROM AUTHOR]