Electronic Journal Technical Acoustics ISSN 1819-2408

Yoshifumi Fujita, Mitsuo Ohta

A trial on correlative effect of higher order between utility and risk based on acoustic and magnetic fields around VDT

language: English

received 03.01.2007, published 12.03.2007

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ABSTRACT

In this paper, first, a methodological principle trial for the quantitative evaluation of the correlative and/or cumulative effect on indoor high-technology pollution has been proposed under an absolutely inseparable relationship between utility and risk at the same time and in the same ring. Then, the effectiveness of the proposed method is partly confirmed through some principle experiment between sound (served for utility) and leaked magnetic field (served for risk) especially before and after attachment of a magnetic oscillator called Tecno AO (CE mark, ISO sanction).

10 pages, 7 figures

Сitation: Yoshifumi Fujita, Mitsuo Ohta. A trial on correlative effect of higher order between utility and risk based on acoustic and magnetic fields around VDT. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2007, 8.

REFERENCES

1. B. Russel. A History of Western Philosophy. Simon and Shuster, New York, 1945.
2. M. Ohta and E. Uchino. The Course of Science and Technology, and Acoustics: Past, Present and Future-Turning to Information Acoustics. Chinese Journal of Acoustics, vol. 11, N 3, 213–223, 1992.
3. M. Ohta and Y. Fujita. Inter-subjective relationship of higher-order among spatial-temporal wavy environmental factors – a methodological trial based on a standpoint of “Relationism-First”. Technical Acoustics, http://www.ejta.org, 2006, 6.
4. M. Ohta and T. Koizumi. General statistical treatment of the response of a non-linear rectifying device to a stationary random input. IEEE Trans. IT, IT-14, 595–598, 1968.
5. Y. Fujita, M. Ohta and H. Ogawa. A methodological quantitative trial based on hierarchical mutual intermediation between different fields – A trial to some synthetic evaluation for high-technology pollution (II). Technical Report of IEICE, vol. 104, N 223, 33–38.
6. M. Ohta. Several dynamical state estimation methods for environmental system of acoustic noise and vibration type. I. Methodological style and establishment of a general theory (in Japanese). Japanese society of automatic control: System and control (explanation), vol. 23, N 10, 27–33, 1979. II. State estimation theory of energy system and its application of living environment (in Japanese). Japan Association of Automatic Control Engineers: Systems and Control (explanation), vol. 23, N 12, 26–33, 1979.
7. M. Ohta and K. Hatakeyama. Stochastic system theory of acoustic environment and its digital signal processing. Japan Association of Automatic Control Engineers: Systems and Control (explanation, special issue), vol. 31, N 11, 823–831, 1987 (in Japanese).
8. M. Ohta and A. Ikuta. Stochastic signal information processing – Bayes' type digital filter using higher order mutual correlation and its application to state estimation. Journal of Acoustic Society of Japan (specific explanation), vol. 50, N 2, 140–148, 1994 (in Japanese).
9. IEEE standard. Safety levels with respect to human exposure to radio frequency electromagnetic fields, 3 kHz to 300 GHz. IEEE C. 95.1, 1991.
10. USSR Ministry of Health Protection. Temporary health standards and regulations on protection of the general population from the effects of electromagnetic fields generated by radio-transmitting equipment (summary: Russian → Japanese translation). N 2963–84, 1984.
11. T. S. Tenforde and W. T. Kaune. Interaction of extremely low frequency electric and magnetic fields with humans. Health Physics, vol. 53, 585–606, 1987.
12. Measurement Technique Research Committee on Biological Effect of High Frequency Electromagnetic Field, The Institute of Electrical Engineers of Japan Ed. Biological Effects of Electromagnetic Fields and Measurement. Corona Publishing Co. Ltd., Tokyo, 1995 (in Japanese).
13. Henri Pieron. LA SENSATION. Original Copyright by Press Universitaires de France (Japanese translation), Hakusuisha, Tokyo, 1987.

		Yoshifumi Fujita received his B. E. degree in 1974 from Kyoto Institute of Technology and his M. S. degree in 1976 from Kyoto University, and his Dr. degree of Eng. in 2004 from Okayama University of Science. He was a Research Associate in 1976, Lecturer in 1982, and Associate Professor in 1987 in the Department of Mech. Eng., Kure Techinical College, Associate Professor in 1993, and Professor in 1995 in the Department of Management and Information Science, Onomichi Junior College, and Professor in 2001 in the Faculty of Economics, Management and Information Science. He is engaged in research on random signal processing and evaluation for EM and sound waves in environment. He is a member of the Acoust. Soc. Jap., IIAV, Inst. Syst. Contr. Inf. Eng. and IEICE. e-mail: fujita(at)onomichi-u.ac.jp
		Mitsuo Ohta was born in 1928. He received his B.Sc. degree in physics in 1952 and his D.Sc. degree from Kyoto Univ. in 1961. After working as an associate professor at Kobe Univ. and serving as a professor at Fukui Univ. and Hiroshima Univ., he retired from Hiroshima Univ. (as an emeritus professor) and then Kinki Univ. He was named as a fellow of the International Institute of Acoustics and Vibration (IIAV) in 1999 and as a fellow of the Society of Instrument and Control Engineers of Japan in 1996. He has also received the title on Advising Engineer authorized by the Japanese Society of Noise Control Engineering. His research fields of study include microwave, dielectric, ultrasound and electromagnetic wave propagation and control engineering. In recent years he has conducted research in sound and vibration, stochastic systems engineering, signal information processing and EMC. He got two prizes in praise of his paper and his merit from the Acoustical Society of Japan and a prize of environmental protection from Japanese government and also Marquis Who’s Who in Science & Engineering 2005-2006. e-mail: ryxyj592(at)ybb.ne.jp