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Article type: Cover
1991 Volume 430 Pages
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Article type: Cover
1991 Volume 430 Pages
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Article type: Appendix
1991 Volume 430 Pages
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Article type: Appendix
1991 Volume 430 Pages
_1_-_4_
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Article type: Appendix
1991 Volume 430 Pages
_5_-_6_
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Article type: Index
1991 Volume 430 Pages
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Article type: Appendix
1991 Volume 430 Pages
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Article type: Appendix
1991 Volume 430 Pages
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Osamu TANAKA, Shin-ichi KUGA
Article type: Article
1991 Volume 430 Pages
1-11
Published: December 30, 1991
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In this report : part-5, method for calculations and experiments to expect structure-borne sound transmission are expanded into the #-shaped structure which have some finite length elements. For experiments, 2-dimensional model made of vinyl-chloride plate elements are used. In analysis, matrix calculation methods are introduced in which every wave transformations at discontinuities and main propagating paths are considered. With considering of amplitude distribution on exciting element, both results of vibration level attenuation from calculation and experiment are coincided. Then, with considering exciting point accelelance to level attenuation, the frequency characteristics of standardized accelelation levels on the end-element are fairly deduced.
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Shuichi MIURA, Toshio OJIMA
Article type: Article
1991 Volume 430 Pages
13-22
Published: December 30, 1991
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Object of this paper is to clarify the characteristic of thermal performance in underground shopping center, and to clarify the environmental influence of the regulation which is established from the point of safety. Survey for the energy consumption of 32 underground shopping centers and environmental measurement of four underground shopping centers were carried out. All of them were consuming a large amount of energy. Underground shopping centers which is built after the regulation have many entrances and out air comes in from them. In summer, it is cooler than outside, but in winter, a large amount of cold air comes in from the entrances.
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Ken-ichi ISHIDA, Mitsuhiro UDAGAWA
Article type: Article
1991 Volume 430 Pages
23-31
Published: December 30, 1991
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This paper describes the validation of the proposed simulation method using the field test data obtained from the two experimental houses for the three months in winter. From the comoarison between the simulated results and the measured data the following were found. The disagreement between the simulated values and the measured values are 10 % for the seasonal heating loads. The room air temperature variation obtained by the simulation and the measurement showed similar orofiles and good agreements. From these results it was concluded that the proposed method can be used for predicting the thermal oerformance of residential buildings.
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Kenji ASANO, Kazuo ITO
Article type: Article
1991 Volume 430 Pages
33-43
Published: December 30, 1991
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^<222>Rn entry characteristics into a basement (room volume : 30.7 m^3, penetration holes : 11 points in the surrounding wall) was investigated. The ^<226>Ra contents of the soil surrounding the house and the concrete were 26.2 and 25.9 Bqkg^<-1> respectively. Main results of the experiment were as follows : 1) A very small pressure difference (0.3 Pa) caused by the chimney effect drove the soil gas, including Rn, into the basement. 2) The Rn emanation power of the concrete increased from about 7 % at 10℃ to about 27 % at 20℃ wall temperature. 3) The maximum Rn entry rate was approximately 150 Bqm^<-3>h^<-1> when one penetration hole was opened and was approximately 300 Bqm^<-3>h^<-1> when four holes were opened in the wall around the basement.
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Akira TAKAKUSAGI
Article type: Article
1991 Volume 430 Pages
45-53
Published: December 30, 1991
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This paper describes the theoretical method of measuring the effect of condition based preventive maintenance on air-conditioning systems' reliability, and optimization of such preventive maintenance policy. A mathematical model is presented to analyze theoretically condition based preventive maintenance through intermittent maintenance inspections by maintenance personnel, or continuous inspections using an automated system, conducted to detect indications of failures to occur. Based on this mathematical model, the effects of condition based preventive maintenance on system reliability are quantitatively measured, and the optimal intervals between inspections are derived.
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Kunio FUNAHASHI
Article type: Article
1991 Volume 430 Pages
55-64
Published: December 30, 1991
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This paper (Part 2) describes some characteristic aspects of spatial cognition with regard to an initial instruction as the environmental information to a subject which is given at the origin(O) of his/her navigation through an area of irregular street network. With regard to the type of initial instruction given at the O, the sketch map which was drawn immediately after the round trip between O-D was analysed from the view point of the spatial cognition about the structure of O-D relationship, lack or filling of streets, and style and procedure of drawing.
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Ki SEO
Article type: Article
1991 Volume 430 Pages
65-76
Published: December 30, 1991
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The object of this study is to obtain the fundamental knowledge on the space of campuses through the analysis and definition of the relative factors of its spatial composition and variations. There were seven types, (street-axis, square-axis, square connection, square dispersion, building connection, street area-non axis, mixture-non axis) were extracted as a result of classification on similarity of spatial composition of 72 universities, 89 campuses in Japan, and on the factors - (axis, grouping, circulation) - that cause to frame the spatial composition. And through the analysis about the relationship between each type an 11 relative factors, and each types and its strength were verified.
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Chejin LIN, Kaichiro KURIHARA
Article type: Article
1991 Volume 430 Pages
77-86
Published: December 30, 1991
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The objective of this research is to determine the differences in the manner of exhibition style of art museums. Art museums may be classified into 4 types as follows : 1) museums with fixed exhibitions having their own collections; 2) museums with rotating exhibitions having their own collections; 3) museums with temporary collections (leased collections); 4) museums that are a combination of 2) and 3) above; Exhibition styles are characterized according to the display style of the art work, supplementary communication system, and furnishing or equipment systems. In this paper, we found out that there are distinctive features in the exhibition styles of the 4 types of museums as mentioned above.
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Akira YAMAMOTO
Article type: Article
1991 Volume 430 Pages
87-94
Published: December 30, 1991
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This research make the average frequency of renovation clear in the district where traditional townscapes are preserved, and identify the factors of restoration, that determine the frequency, in order to maintain a viable environment. Four conclusions are pointed out. 1) Remodeling of interior space are important. 2) Commercial facilities have been renovated more frequently than dwellings. 3) The frequency as a standard in one century are as follows : 1 or 2 times of facade restorations, 2 or 3 times of interior remodeling and once equipment remodeling or structural reinforcement. 4) Building size and site size are positively correlated to the frequency.
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Naomi ANDO, Masahiro CHATANI, Koji YAGI, Ryota SAITO
Article type: Article
1991 Volume 430 Pages
95-105
Published: December 30, 1991
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The objective of this research is to argue about a method to describe form visually as well as numerically, by using personal computer. In section one, the need of such a method is discussed. In section two, the concept of "Voxel Model" is described and compared with the conventional method called "Geometry Model". In section three, "Plane Voxel Model" is proposed to describe architecture form, and two types of program to present "Plane Voxel Model" are discussed. In section four, the "Plane Voxel Model" is applied for the analysis of European Plazas. The numerical analysis of plazas in various aspects were made utilizing the visual description of form in "Plane Voxel Model". Through these discussions and analysis, the advantage of using "Plane Voxel Model" is clarified. And the possibility of further development in describing the external environment is focusedion in section five.
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Article type: Appendix
1991 Volume 430 Pages
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Article type: Cover
1991 Volume 430 Pages
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