[특집] 일본의 재래식 전력과 동북아 안보정책

Kanji Akagi(Kanji Akagi) 한국전략문제연구소 2002 전략연구 Vol.- No.26

This report will take up the following three subjects. The first is the description of a background and a principle posture concerning National ~fense Program Outline formulated in 1996 as principle policies for the defense of Japan. The second is to analyze the nature of Japans conventional forces indicated in the (Mid-tenn) Defense Build-up Program which has been implemented under the Outline. The last is to explain the content of so-called military Emergency Bills brought up in the Diet, and to consider the implication of it. Certainly, Japan extends its defense from the simple repulse of direct aggression against Japan to the flexible action against various threats occurring in and out of Japan more and more conspicuously after the end of the Cold War as envisaged in National Defense Program Outline in 1996. Moreover, in the latest Mid-tern Defense Build-up Program, the emphasis of defense is being placed on the southern area of Japan including isolated islands. The Outline, however, retains its defense posture of defending Japan and its surrounding areas in principal. The equipment of the Self-Defense Forces is also prepared according to this posture. Japans defense posture today has two basic thoughts. The first one stems from the concept of Basic Defense Force in 1976. It mainly aimed to equip necessary functions over the defense and take balanced postures in its organization and deployment including the logistical support, for the purpose of putting on the sufficient alert in peacetime and repelling limited and small-scale aggression. Under this thought, Japan made an attempt to possess the minimum defense capabilities necessary for an independent county so that it would not turn into a power vacuum and become an unstable factor in Japans neighboring region, instead of building up an adequate capabilities of its own to counter directly a military threat to Japan. Japan has retained this posture, whether explicitly or implicitly, until today. After the Cold War, Japan made a total review of the Defense Program during the mid 19905. It responded to the altered strategic landscape in East Asia. As the result of this review, Japan decided the New National Defense Program Outline in 1996. The concept of Basic Defense Force continues. On the other hand, the new Outline have new roles, dealing with large-scale disasters and other emergencies and contribution to create more stable security environment along with the main mission of the Japans defense. These are, however, limited to MOOTW, the military operations other than war. The features of the defense capabilities under National Defense Program Outline of 1996 are as follows. Generally, Japan aims to enhance its capability in its quality, but tries to reduce it in quantity. The new system of GSDF is started. Some divisions are replaced and new brigades are placed. It is the transition of the military strategy from armored divisions to mobility. And also its strategic posture reoriented toward south, Kyushu and Okinawa. The Maritime Self-Defense Force is transferring its emphasis from anti-submarine warfare to maritime surveillance capability by patrol aircraft. Its shift would contribute to strategic stability in Western Pacific, with the presence of U. S. Navy. In the 1980s, Japan developed a defense capacity to protect the Asia-Pacific sea lanes extending 1,(0) nautical miles outward from Japan. Around the same time, Japan accepted a special mission to develop an incomparable antisubmarine warfare capability. One of the outcomes of these two programs is that Japan has a considerable store of expertise and equipment applicable to surveillance and interdiction of targets in the mid-ocean and coastal areas. By many measures, the MSDF is now the worlds second-most powerful maritime force, counting among its assets an aerial armada of 100 P-3C Orion patrol aircraft.

The Korean War and Japan

( Akagi Kanji ) 서울대학교 규장각한국학연구원 2011 Seoul journal of Korean studies Vol.24 No.1

Mechatronics Education Using Robot Competition in Okayama University of Science

Akagi, Tetsuya,Fujimoto, Shinsaku,Kuno, Hiroaki,Araki, Keisuke,Yamada, Satoshi,Dohta, Shujiro Korean Society for Engineering Education 2010 공학교육연구 Vol.13 No.2

Electronics machines make daily human life more convenient and comfortable and try to ease burdens. When designing and manufacturing such mechatronic systems, the engineers need to have a wide range of knowledge. The purpose of our education is for students to learn to use mechatronic techniques. To realize our goal, we regard "an interest in creation" of our student as an important educational method. In this paper, we propose and try an educational method for mechatronics creation using "their interest". The method is to hold robot competitions between 1st and 3rd year students as a regular curriculum. In order to confirm the progress of our students in our engineering course, in the last year, some students entered the Rescue Robot Contest held in Kobe Japan. As a result, our student team got second place, a great honor considering it was our first attempt. We confirm that the robot competition is a useful method to make students study by themselves.

EVALUATION OF QUANTATATIVE RENAL FUNCTION BY 123I-OIH IN COMPARISON WITH PAH CLEARENCE

Akagi, Hiroaki,Sueyoshi, Kozo,Shin, Akinori,Kimura, Tadashi,Ishimaru, Tetsuro,Ishida, Hirohumi,Sekimoto, Makoto 대한핵의학회 1984 핵의학 분자영상 Vol.18 No.1

Present State and Future Trends of Active Power Filters in Japan

Hirofumi Akagi,Noriyuki Watanabe 전력전자학회 1992 ICPE(ISPE)논문집 Vol.1992 No.4

With remarkable development and advance in PWM inverter technology on the basis of fast switching devices in the 1980s, active power filters which are classified into shunt and series active filters have been studied with the focus on their practical installation in industrial power systems. In 1982, a shunt active filter of rating 800kVA was put into practical use for the first time in the world. The main circuit consisted of a current source PWM inverter using GTO thyristors. In 1986, a combined system of a shunt active filter of rating 900kVA and a shunt passive fil­ter of rating 6600kVA was practically installed to suppress the harmonics produced by a large capacity cycloconverter for steel mill drives.<br/> More than one hundred shunt active filters have been operating properly in Japan. The largest one of the shunt active filters is 20MVA, which was developed in 1990 for reactive power and harmonic compensation for an arc fur­nace with the help of a shunt passive filter of 20MVA.<br/> This paper presents a survey of shunt and series active filters using PWM inverters, paying attention to research and practical applications in Japan.<br/>

Self evaluation for gait based on optical flow calculation

Ryo Akagi,Teruo Yamaguchi 제어로봇시스템학회 2021 제어로봇시스템학회 국제학술대회 논문집 Vol.2021 No.10

Walking is an activity that can be practiced by almost all people, and it has the effect of preventing diseases and unhealthy conditions that are increasing in many people. If we can walk efficiently, it is expect to reduce the burden on the body and improve our motor skills. At present, it is common for experienced and knowledgeable instructors to evaluate gait in walking, but it is not certain that the evaluation is always objective, and it is time-consuming and costly. Therefore, we expected that if we can analyze the ideal gait and compare our own gait with the ideal gait. we would be able to evaluate how our own gait is close to the ideal gait in a simple way. In this study, to analyze the ideal gait, we measure the head velocity and acceleration of the ideal gait captured by a high-speed camera and compared it with the non-ideal gait using optical flow measurement.

Substrate-mediated Gene Delivery for Gene-Eluting Vascular Stents

Daisuke Akagi,Makoto Oba,Hiroyuki Koyama,Nobuhiro Nishiyama,Tetsuro Miyata,Hirokazu Nagawa,Kazunori Kataoka 한국고분자학회 2006 한국고분자학회 학술대회 연구논문 초록집 Vol.2006 No.10

Mechatronics Education Using Robot Competition in Okayama University of Science

T. Akagi,S. Fujimoto,H. Kuno,K. Araki,S. Yamada,S. Dohta 한국공학교육학회 2010 공학교육연구 Vol.13 No.2

Electronics machines make daily human life more convenient and comfortable and try to ease burdens. When designing and manufacturing such mechatronic systems, the engineers need to have a wide range of knowledge. The purpose of our education is for students to learn to use mechatronic techniques. To realize our goal, we regard “an interest in creation” of our student as an important educational method. In this paper, we propose and try an educational method for mechatronics creation using “their interest”. The method is to hold robot competitions between 1st and 3rd year students as a regular curriculum. In order to confirm the progress of our students in our engineering course, in the last year, some students entered the Rescue Robot Contest held in Kobe Japan. As a result, our student team got second place, a great honor considering it was our first attempt. We confirm that the robot competition is a useful method to make students study by themselves.

Ground-state Phase Diagram of the Kondo Lattice Model on Triangular-to-kagome Lattices

Yutaka Akagi,Yukitoshi Motome 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3

We investigate the ground-state phase diagram of the Kondo lattice model with classical localizedspins on triangular-to-kagome lattices by using a variational calculation. We identify the parameterregions where a four-sublattice noncoplanar order is stable with a finite spin scalar chirality whilechanging the lattice structure from triangular to kagome continuously. Although the noncoplanarspin states appear over a wide range of parameters, the spin configurations on the kagome networkbecome coplanar as approaching the kagome lattice; eventually, the scalar chirality vanishes for thekagome lattice model.

Catheter Interventions for Kawasaki Disease: Current Concepts and Future Directions

Teiji Akagi 대한심장학회 2011 Korean Circulation Journal Vol.41 No.2

During the past 15 years, clinical experience with catheter interventional treatment in patients with Kawasaki disease, including balloon angioplasty, stent implantation, rotational ablation, and transluminal coronary revascularization, has been gradually increasing. Because the coronary artery lesions in Kawasaki disease involve severe calcifications, the indications or catheter intervention techniques have not been established for adult patients with Kawasaki disease. Satisfactory acute results for coronary balloon angioplasty have been obtained in patients with a relatively short interval from the onset of disease, especially within 6 years; however, the incidence of restenosis after angioplasty is still high. Rotational ablation may be the most appropriate catheter intervention technique for patients with Kawasaki disease. The advantage of rotational ablation is the high success rate,even in patients with calcified coronary artery stenosis. Stent implantation requires larger arterial access and is not possible in younger children. Care should be paid to the detection of newly-formed aneurysms, as the formation of new aneurysms is associated with the use of additional balloon angioplasty using high pressure balloon inflation. Anticoagulation or anti-platelet regimens are essential for long-term management. Coronary intervention in Kawasaki disease requires special techniques and knowledge of cardiovascular involvement. The procedure should be managed under the close collaboration between pediatric cardiologists and coronary interventional cardiologists.