In 2000s, three-dimensional shapes of gluon particles in a proton were discovered. It has been demonstrated that asymmetrical gravitational forces exist between these particles. The asymmetric gravitational force between gluon particles in a proton causes that proton to accelerate on its own and this is the basis of the gas mo;ecular motions. In this work, a simplified acceleration model which simulated the asymmetric gravitational force in a proton was proposed. Here we report the comparative study between density distribution of gravitational forces obtained from the proposed model and Max well-Boltzmann velocity distribution that are in good agreement with expressing the behavior of gas molecules respectively.

The objective of this study is to develope the inspection standards and methods of motorcycle based on the Korean Motor Vehicle Safety Standards (KMVSS), the Korean Motor Vehicle Inspection Standards (KMVI), the inspection standards of the International Motor Vehicle Inspection Committee (CITA), United Kingdom, United State of America and Japan. 20 items related with motorcycle safety are suggested to inspect. Brake performance, headlight lamp, and speed are suggested to measure by a mechanical devices while the rest of items to inspect visually. The inspection with the suggested methods for 138 various models of runs are conducted for verifying the adaptability of present inspection standards. 88.4%, 54%, and 100% of runs satisfy the inspection criteria of the brake performance, lamp, and speedometer, respectively. Inspection time is expected to be about 10 to 16 minutes.

The objective of this study is to construct the inspection standards of motorcycle brake system performance. Based on the Korean Motor Vehicle Safety Standards (KMVSS), the Korean Motor Vehicle Inspection Standards (KMVI), the inspection standards of the International Motor Vehicle Inspection Committee (CITA), United Kingdom and Japan, three alternative brake performance criteria were suggested. The brake performance tests for 129 various models of used motorcycles were conducted for verifying the developed test equipment and suggested three alternative criteria. The total brake performance criterion is appropriately suggested to set at 50 %. Considering the KMVI or the CITA, the brake performance criterion of rear axle may suggested to set at 20 % or 25 %, either.