湾岸およびインド洋地域の安全保障と日本

In this paper, first we look back at the activities of the JMSDF in the Indian Ocean and the Gulf for the past 10-20 years from the view-point of contributions to security in the regions, and Japan\u27s defence and diplomatic policies. In addition we would like to consider the situation that Japan has currently been placed in, or the primary factors of the change of power balance caused by China\u27s foreign expansion and US gradual troop reductions, and economic conditions and energy supply problems after the earthquake disaster, as well as the returning of the LDP Administration. Each of these affects Japan\u27s defence and diplomatic policies, and Japanese approach to Gulf countries is to be precisely understood in this context. For Japan, the importance of relationships with Gulf countries will surely increase in the foreseeable future. However the immediate addition of the JMSDF\u27s force in the Indian Ocean and the Gulf Region is difficult. So Japan\u27s role in regional security will probably be depending on the licensing of technology to India and Gulf countries, plus the construction of collaborative systems devoted to the training and support of highly proficient personnel. China will have a competitive relationship with Japan over access to the energy supply sources and the markets in Gulf countries, and it will be necessary to employ such systems for the purpose of international trust building and preventing of any free-ride

<Original Paper>Characteristics of Prototype Rotating Viscometer with Direct Measurement of Torque

A prototype outer cylinder rotating viscometer with a direct measurement of torque exerting on the inner cylinder, was built and tested at room as well as at high temperatures. The following results are obtained : (1) Absolute value of torque exerted by viscous flow can be measured by means of a load cell or an electronic balance. (2) Measurement mechnism is quite simple and more stable than the other rotating viscometer for high temperature application. (3) There is a possibility of measuring the absolute value if the exact evaluation of torque including the end effect can be derived. (4) The viscometer is suitable for the measurement of the viscosity range from 10^0 to 10^3 dPas and at a temperature up to 1500℃

楕円曲線のねじれ部分群を計算するアルゴリズムについて

首都大学東