In order to prepare high-quality activated carbons (ACs), coal tar pitch (CTP), and mixtures of CTP and petroleum pitch (PP) were activated with KOH. The ACs prepared by activation of CTP in the range of 700~1000℃ for 1~5 h had very porous textures with large specific surface areas of 2470~3081 m2/g. The optimal activation conditions of CTP were determined as CTP/KOH ratio of 1:4, activation temperature of 900℃, and activation time of 3 h. The obtained AC showed the highest micro-pore volume, and pretty high specific surface area and meso-pore volume. The micro-pore volumes and specific areas of activated mixtures of CTP and PP were similar to each other but the meso-pore volume could be increased. In order to change the degree of crystallinity of precursors before KOH activation process, the CTPs were carbonized in the range of 500~900℃. As the carbonization temperature increased, the specific surface area and pore volume of the activated ACs with the same activation conditions for CTP decreased dramatically. It was demonstrated that the increased pore size distribution of AC electrodes in the range of 1 to 2 nm plays an important role in the performance of electric double-layer capacitor.

The purpose of this study is to suggest specific ways of designing educational programs for school violence prevention by applying a serious online game in Korea. To do this, first, the authors analyzed literature, programs and cases related to school violence. Second, we derived design principles for serious games from the analysis of current game contents. Finally, we wrote a design process to develop the game. A serious game for school violence prevention was specifically designed based on these design principles and processes. It was applied by registering school violence cases, processing the cases, drawing solution plans, and finishing the game. The game is intended for a game user to be self-taught and self-cured by participating in the solution process of school violence cases.