The Takasaki Radiation Chemistry Research Estabishment of Japan Atomic Energy Research Institute started the construction of the ion beam irradiation facilities to promote a new project "Advanced Radiation Technology Study using Ion Beams (ART project)". The ART project is intended to push forwarded with R&D on materials for space and nuclear fusion reactors, biotechnology and new functional materials using ion beams. Two ion accelerators (AVF cyclotron and Tandem type accelerator) are now under construction to be operational before the end of 1991, and other two accelerators (van de Graaff accelerator and ion beam implanter) are further scheduled to be installed in 1993. Some noticeable results were obtained in the preliminary studies so far. SiC which expected as semiconductor materials for space use was found to be more radiation resistant than Si. A new radiation resisant fiber reinforced plastics was developed. It retains good mechanical properties at low temperature even after the irradiation of electrons up to a dose of 100 MGy. Studies were also conducted to see the effects of ion beam irradiation on bacteria and organic thin films.
The polymerization of diyne acids by heavy ion beams was found to take place along with the improvement of molecular orientation in the film.

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In this study, we measure the body movement of a car driver by using three-axis acceleration sensors for detecting an aimless driving state. The data of driver's body motion in a driving simulator is collected from 10 subjects. These results suggest that the aimless state can be detected from the variance data of the acceleration on the right wrist.

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Recently cars that have functions of autonomous cruising and parking have become popular. However, even if with those functions, drivers have to operate manually at difficult parking places that require human decisions. In this research, we developed and evaluated a display system embedded on a steering wheel that assists drivers ’poor steering action at parking. This paper describes that as a result, we obtained evaluation results that the trial display are able to assist drivers ’poor parking skills.

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土壌汚染やダイオキシン類汚染の修復（調査・対策）にあたっては，作業者の安全確保，周辺環境のリスク低減を図ることは実際の修復作業の計画・実施する上でも重要な要素の一っである．また，特にダイオキシン類汚染においては，単に周辺環境のリスクを低減するのではなく，周辺住民とのコンセンサスをいかにとっていくかが事業を進めていく上で重要である．ここではその事例として，和歌山県橋本市で行っている工事の内容を紹介する．

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Hydraulically driven construction robots are expected to play important roles in various situations, such as disaster response by teleoperation, taking advantage of their high power-to-weight ratio and robustness against harsh environments. It is well known that operability and task efficiency in teleoperation can be improved by force feedback. In this paper, we investigate if the fidelity of teleoperation of hydraulically driven construction robots can be improved by force feedback, especially impact force feedback, based on the estimated external load from cylinder pressures and link accelerations. For this purpose, we propose a force scaling method to give the operator the information on external loads properly. The results of subject experiments indicate that the operators can discriminate the hardness of the material easily by the impact force feedback.

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Aging rate of Japan society, especially in remote islands area, has been increasing. In those remote islands area, it is important to keep public transportation system and the system should be more accessible for elderly people. Then we .have been developing the new small-craft transportation system that passengers don't have to change vehicles/vessels between land and sea. We report that the concept and the outline of the field experiment of the new transportation system.

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㈱BWR運転訓練センターはBWR型原子力発電所運転員の教育訓練を目的として設立され，昭和49年から訓練を行なっている．訓練生は主としてBWR型原子力発電所を運転または建設している電力会社から派遣され，訓練修了者数は1000入に達している．訓練設備として発電所の中央制御窒を模擬した訓練用シミュレーターを設置しており，ごれによる訓練の成巣は高い評価を得ている，最近の進歩した制御技術を用いた新型制御盤が実際の発電所に採用される情勢に対応し，当セソターでは新型シミュレーターを建設した。これはカラーCRTを大幅に採用し集中監視操作によって運転性の向上をはかるもので ある．石油に代る代替エネルギーとして原子力発電の比率はさらに大きくなるが，その安全かつ信頼性の高い運転を達成するため，運転訓練セソターの使命はさらに大ぎくなろう.

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This paper presents a primitive study on applying the ultrasonic wave for the driving assistant systems from a human-machine interface point of view. The lap time of playing computer game machine as the performance index of operation with / without ultrasonic sound was measured for five subjects. Results show us the operational characteristics of subjects are changed by ultrasonic presentation. Some subjects tend to concentrate to play game under ultrasonic environments, compared with normal circumstances.

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Aging rate of Japan society, especially in remote islands area, has been increasing. In those remote islands area, it is important to keep public transportation system and the system should be more accessible for elderly people. Then we have been developing the new small-craft transportation system that passengers don't have to change vehicles/vessels between land and sea. Based on the field experiment, it was verified that the receptivity of the concept of the new transportation system is high for the residents in the remote islands area.

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静電圧を利用した重イオン加速器であるタンデム加速器は,原子核研究,原子分子研究,固体材料照射損傷の研究などに広く利用されている。この加速器はビームエネルギーを容易に変えられることや,ビームサイズが小さいこと,さらにビーム種が豊富であることなど他の加速器に比べ優れた特徴を有している。この特性を損なうことなくさらにビームエネルギーを増強するため,原研では1988年から後段超電導ブースター加速器の建設を開始し,94年7月に計画の加速器性能を達成した。この原研タンデム加速器ブースターを利用する実験計画も95年4月からの利用開始に向けて進んでいる。本稿では,原研タンデム加速器ブースターの構成とその特徴を述べ,原子核研究を中心として,現在建設中の実験装置とその研究内容を紹介する。

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For accurate robotic deburring of an article of cast metal, the analysis and the synthesis of the methodology are discussed. Firstly conventional methods for finishing the cast surface are comprehensively surveyed to point out the essential problems. Based on these analysis, two-mode deburring approach (coarse/fine) are proposed. In the fine mode, based on a linear cutting process model, possibility of the complete finishing by iterative look-and-cut feedback are confirmed and feed rates planning strategy to minimize the deburring time are proposed. The validity of the proposed method has been experimentally confirmed.

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