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| 1.
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天田, 重庚 ; 寺内, 泰
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application/pdf<br />Journal Article<br />The cross section of main frame structure is preferable to be a cylinder for plants and animals in order to adapt to their environment. There are some exceptionals. One of those is a hemp
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palm branch. It has an up side-down isosceles triangular shape. Since the hemp palm branch has unusually large leaves and a relatively slender branch stem as compared with other trees, the branches must be subjected a large bending moment. A triangular cross section must be a solution for that problem, which can reduce the induced stress about 30% under a bending stress. Furthermore, the branch is a composite material reinforced by strong fibers. It also constructs a functionally graded structure on fiber distribution. This structure provides a higher strength in the critical loded region than the induced stress there.
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| 2.
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舩津, 賢人 ; 糟谷, 紘一 ; 白井, 紘行
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application/pdf<br />Journal Article<br />We calculated the flow-field and surface response condition of a planetary probe entering the Jupiter atmosphere, Within the region behind a detached shock wave, the blunt nose is heated to high
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temperature. So that, the numerical results were obtained under a viscous-shock-layer analysis. To protect the probe against high temperature condition and to reduce the heat flux, which includes convectional and radiative heat transfer, we used the ablation of C/C composite materials. This simulation included mass injection, radiative transfer, diffusion, and viscous effects. The radiations included were molecular bands, atomic lines, and continuum processes. It was found that carbon ablation materials were effective in reducing the radiative heat flux.
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| 3.
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長屋, 幸助 ; 湯澤, 秀人 ; 村上, 岩範
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application/pdf<br />Journal Article<br />Since a commutator of the DC-motor is divided into a number of segments to have the torque in the circumference direction, the currents in the coils of the rotor vary and have alternative
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waves during the rotor rotation even in a constant input voltage. The currents become sharp waves, so that they have high frequency component. This implies that the rotor shaft and the case of motor are excited electromagnetic forces with high frequency components. Since high frequency noises are loud when they are input to human ears, so that when high frequency vibrations are suppressed, noises become small. From the situation, this paper discusses a method of noise reduction of Dc Motor. In the method, the current waves are controlled to be sinusoidal waves. The method and the control algorithm are given. In order to validate the method, experimental tests are carried out. It is proven that our method is applicable to the motor noise control.
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白井, 紘行 ; 田部井, 勝稲
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application/pdf<br />Journal Article<br />Based upon a collisional and radiative process theory, and synthetic spectra for argon plasmas, the experimental method for spatial properties of Ar plasma jets was presented, and applied to
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diagnostics for micro Ar plasma jets for fine cutting. A plasma torch had a nozzle of 0.7 mm in diameter and a discharge length of 2 to 10 mm, and was operated with an arc current of 10 to 30 A. Data from a CCD image processor and Mach-Zehnder interferometer were dealt with an Abel transformation to obtain true spacial profiles of electron density and temperature, and heavy particle temperature. Electron temperature in the main flow was found to be about 12 000 to 13 500 K, electron density of an order of 10^<16> cm^<-3>, both increasing with an arc current. It was also found that heavy particle temperature was significantly lower than electron temperature in the nozzle exit region and increased to coincide with electron temperature downstream. Experimental relation of electron temperature and density could be approximated well by that calculated from steady-state collisional and radiative processes.
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| 5.
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長谷川, 和之 ; 茂木, 俊夫 ; 天谷, 賢児 ; 新井, 雅隆
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application/pdf<br />Journal Article<br />Behavior of a spray combustion in a hot air was studied experimentally. A kerosene spray was injected from swirl atomizer into a hot air stream. The air temperature was controlled from room
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temperature to 1 100 K which was higher than the self-ignition temperature of a kerosene spray. Flame shape and temperature distribution were measured to characterize the spray combustion appeared in the hot air stream. Flow state around the spray was visualized by a Schlieren method to analyze the behavior of the air entrainment into the flame. Furthermore, Mie scattering from the spray droplets by irradiation of the laser beam was observed to visualize the spray concentration in a flame. As the result, ignition point was shifted to the upstream side with an increase of air temperature. When the air temperature became higher than 800 K, the blue flame appeared at the bottom portion of the flame. Penetration of the spray became shorter with an increase of air temperature. Spatial distribution of the spray which were not vaporized in a flame was strongly affected by the air temperature.
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| 6.
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松原, 雅昭 ; 伊藤, 勲 ; 坂本, 賢治 ; 小棚木, 光明 ; 吉川, 州彦
概要:
application/pdf<br />Journal Article<br />This paper describes strength evaluation of Al_2O_3/SUS 304 joints subjected to interlaminer shear at elevated temperatures. The jig developed enables us to evaluate shear strengths of
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ceramics/metal joints at elevated temperatures. The shear strengths of them decrease with increasing temperature. The crack generally initiates at the upper and lower sides of the interface, a brazing filler. It grows into Al_2O_3 after stable growth and becomes unstable till 873 K (I C type fracture). The crack propagates along the interface till unstable fracture from 1 173 K (II type fracture). The crack behavior shows a mixed mode of I C and II types at 973 K and 1 073 K (IC+II type fracture). Larson Miller Parameter is valid for creep rapture tests under shear loading. The fracture modes are the I C type under the condition of low temperature and short time and the II type under the long-term condition.
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田部井, 勝稲 ; 白井, 紘行 ; 高草木, 文雄
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application/pdf<br />Journal Article<br />Light emission properties of xenon-water cavitation in circular orifice flows
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were investigated experimentally and theoretically. The emission was enhanced by dissolving a small amount of Xe gas into water, and its spacial pattern was taken by a chilled CCD camera and an image intensifier. A spectrum of cavitation emission was measured by a spectrometer with a photon counter. Based upon the collisional and radiative theory for plasmas and a two-temperature model, synthetic spectra were calculated for emission of a collapsing xenon bubble at the minimum radius. It was found that the light emission pulsated and was intense around the flow axis a little downstream of the orifice, and the experimental spectrum was predominated by continuum and its intensity distribution was very similar to the theoretical ones with electron temperature of about 12000 K to 14000 K. Mean emission energy per unit pulse was estimated experimentally to be smaller than 5×10^<-9> μJ/nm・sr at the wavelength of 450 nm, which is consistent with the plasma conditions from the emission spectrum.
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| 8.
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熊谷, 哲 ; 佐藤, 春樹 ; 吉田, 英生 ; 竹村, 正紀 ; 青木, 和夫 ; 高田, 保之 ; 中川, 勝文 ; 工藤, 一彦 ; 岸浪, 紘機 ; 井上, 剛良 ; 多田, 幸生 ; 香月, 正司
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| 9.
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小島, 宏行
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application/pdf<br />Journal Article<br />In this report, first, the nonlinear equations of motion of a horizontal one-link flexible robot arm are obtained by use of the mode functions of a cantilever beam with a mass. Then, the algorithm
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of the desired signal planning of the joint angle for the purpose of the reduction control of residual vibrations of the flexible robot arm is derived by use of the initial and final conditions of the flexural displacement of the flexible link and the constraint conditions of the desired signal of the joint angle during the acceleration and deceleration terms as well as the linearized equation of motion of the flexible robot arm. The rotation control system of the flexible robot arm is constructed with the desired signal planning for the joint angle and the PD controller. Furthermore, the numerical simulations of the rotation control of the flexible robot arm have been carried out, and it is confirmed that the residual vibrations of the flexible robot arm can be effectively reduced by the present desired signal planning for the joint angle.
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| 10.
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長屋, 幸助 ; 小林, 譲二 ; 今井, 勝仁
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application/pdf<br />Journal Article<br />This paper presents a method of micro-vibration control of milling machine heads by use of vibration absorber. The principle used in the paper is different from usual absorbers. In the
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present absorber, an auto-tuning vibration absorber is presented in which the absorber create anti-resonance state. When the anti-resonance is used, the damping has to be significantly small, so it is difficult to suppress higher modes. To suppress higher modes, the present article uses autotuning magnetic damper. It damps higher modes, but it also increase first modal vibration. Then a method of optimal auto tuning control is presented in which both principal and higher modal vibrations are suppressed. Experimental tests are carried out for a real milling machine, and cutting tests are also performed.
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| 11.
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及川, 康 ; 片田, 敏孝
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application/pdf<br />Journal Article<br />Evacuation activity in early stage of the flood disaster is a matter of importance from the viewpoint of the mitigation of injury. The timing for the decision making in which the inhabitant
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starts the evacuation activity is based on the disaster consciousness of the inhabitant, and the disaster consciousness is formed by flood experience of the inhabitant himself, legend on the flood damage in the past and social education, etc.. In this study, we take notice of the decision making in the evacuation activity of the inhabitant, and analyse the effect of flood experience of the inhabitant on the disaster consciousness and the decision making process of the evacuation activity. Main conclusions are as follows. First, the atrophy of disaster consciousness delay the evacuation activity. The second, though the damage experience in the flood disaster enhances the disaster consciousness, the damage experience of the intermediate level delays the decision making and start timing of the evacuation activity.
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| 12.
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田部井, 勝稲 ; 白井, 紘行 ; 本島, 淳一
概要:
application/pdf<br />Journal Article<br />The behavior of a single xenon bubble in an adiabatic compression process was
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investigated theoretically. Rayleigh's equation for the bubble dynamics was coupled with the detailed collisional and radiative processes for xenon plasma to obtain plasma conditions in a bubble. A two-temperature model for electrons and heavy particles was adopted to estimate the luminescence property from a spherical bubble. For the conditions of initial bubble radius of 10 to 150 μm and pressure change of 200 to 800 kPa, the maximum electron temperature ranged from 5000 to 15000 K and electron number densities about 10^<17> to 10^<20> cm^<-3> at the minimum bubble radius. The plasma in a bubble was in thermally nonequilibrium state during the compression process, and generally the maximum electron temperature was significantly lower than the heavy particle one. The emission intensity from cavitation bubbles was sensitive to the change rate of pressure and the bubble radius.
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| 13.
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佐藤, 博之 ; 天谷, 賢児 ; 新井, 雅隆
概要:
application/pdf<br />Journal Article<br />Flame lengths of gas jet diffusion flames were measured under various gravity
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evels. A spin tester was used to obtain a high gravity field which level was changed from normal gravity (G=1) to G-20. In order to investigate the fuel density effect on flame structure at high gravity level, two kinds of fuels (methane and propanw) and further methane-propane mixture fuel whose density was equivalent to the surrounding air were used. As the results, flame length decreased with an increase of gravity level regardless of the positive and negative buoyancy effect between the fuel and surroundings. To investigate the gravity effect on flame structure, length of blue flame which appeared at anchor portion of the flame was measured under various gravity levels. It was confirmed that the blue flame was expanded with an increase of the gravity level. This result was explained by the enhancement of the air entrainment at the anchor portion of the flame. Evaluation of flame length which was obtained by Altenkirch considering the relationship of fuel and required oxygen were used to evaluate the experimental data of flame length under the various gravity level. From this method the following empirical correlation was proposed : L_f/γ_o=1.72Re^<0.667>Fγ^<0.0846>, where L_f is a flame length, γ_o is a nozzle radius, Re is the Reynolds number based on nozzle radius and Fγ is the Froude number.
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| 14.
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林田, 和宏 ; 天谷, 賢児 ; 新井, 雅隆
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application/pdf<br />Journal Article<br />Laser induced fluorescence was applied for the measurement of OH concentration
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in the propane diffusion flames. A tunable, narrow band KrF excimer laser was used to excite the A(ν'=3)←X(ν""=0) band of OH radical. An emission spectrum of the induced light from the flames was measured by a spectroscope. An OH fluorescence component was picked up from the emission spectrum in order to obtain the accurate distribution of OH fluorescence in the flames. We call this method for spectrum-LIF (S-LIF). The spectrum of the induced light from the diffusion flames was compared with that of the premixed flames. Although the spectrum had only OH fluorescence components in the case of premixed flames, high intensity emission from the yellow flame appeared on the LlF image in the case of diffusion flames. To remove the high intensity emission from the LIF image, off resonance image was deducted from the OH resonance image as the background image. Using this deduction method, a planer laser induced fluorescence (P-LIF) was tried to measure the distribution of OH fluorescence. OH fluorescence distribution measured by P-LIF was compared with that of S-LIF. As the result, the P-LIF image qualitatively agreed with the data of S-LIF.
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| 15.
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大橋, 隆弘 ; 佐伯, 嘉信 ; 本村, 貢 ; 沖, 善成
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application/pdf<br />Journal Article<br />Not quite a few extruded aluminum alloys are used for parts of building materials today. We develop an expert system for blanking process planning for such three dimensional materials by
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feature elimination. We think that blanking is the procedure adding' features to a raw material and process planning is the procedure eliminating features from a product. We attempt to implement this feature eliminating procedure on computers. A shape model of a product consists of two parts; a basic-extruded-material and features. A basic extruded material model represents shape of a raw material. It is a plain surface model by polygonal faces. Feature models are surface models, too. But, they describe negative volume representing blanked parts of the product. The expert system attempts to eliminate features by eliminating faces of features on each face of basic material model. At first, the system chooses one face of basic material model, and collects features' faces on it. Then, it searches database, we call 'feature eliminating case base,' at each feature, and finds the blanking procedure which can eliminate, or make it. Repeating the above from the product to its raw material, the system gets process plans of blanking for the product.
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秦, 誠一 ; 山田, 典弘 ; 早乙女, 康典 ; 井上, 明久 ; 下河辺, 明
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application/pdf<br />Journal Article<br />Amorphous alloys with the wide supercooled liquid region are called metallic g
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lasseS. In the supercooled liquid state, the metallic glasses exhibit superplasticity, which suggests the possibilities of forming the metallic glasses into various intricate shapes. In this paper, formability of two types of Zr based metallic glass; Zr_<75>Cu_<19>Al_6 and Zr_<55>Cu_<30>Al_<10>Ni_5 (atomic%) are examined in the supercooled liquid state. The example metallic glasses showed superplasticity under compressire stress and high thermal stability in the supercooled liquid state. Furthermore, forming accuracy of the example metallic glasses was better than one micrometer. As the application of such precise forming, a concave mirror with a l0 mm diameter was formed. The profile error of the mirror was 0.5 μm and the surface roughness (Rmax), 90 nm. This superplastic forming of the Zr based metallic glasses is expected to be used for the production of various components of high precision and intricate shape.
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長屋, 幸助 ; 小杉, 泰裕 ; 鈴木, 孝明 ; 村上, 岩範
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application/pdf<br />Journal Article<br />A simple but stable non-contact high Tc superconducting levitation system with a vertical shaft has been presented. The system consists of a superconductor and permanent magnets. In the system,
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only a lower end of the shaft is supported by a high Tc superconductor, and the other end is supported by two ordinary permanent magnets. Since the restoring force is small with respect to the radial direction the system becomes unstable when the force act in the radial direction, so it is difficult to drive the shaft by electromagnetic forces in using such as motors. Then, a driving system using electromagnets has been presented, in which the balanced forces act on two opposite sides of the disc type rotor in the axial direction. Since the system has no unbalance force from an analytical point of view, the rotor will be able to rotate without control. In the system, however, since there is the eccentricity between the center of rotation and magnetic center, so vibrations are generated. This study also presents an optimal control method of the vibrations. To validates the proposed system, and the control method, experimental tests have been carried out.
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| 18.
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斉藤, 正浩 ; 荻原, 五郎 ; 天谷, 賢児 ; 新井, 雅隆
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application/pdf<br />Journal Article<br />Behavior of spray-to spray impingement, where two spray jets were formed EFI (Electronic Fuel Injection) nozzles and impinged each other, was studied experimentally. This system was
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named MISS EFI. Spray penetration and the Sauter mean diameter of the spray were measured to investigate the effect of spray-to-spray impingement. When the impingement location was set at the vicinity of the nozzles, impingement phenomena became to be jet to jet impingement of the liquid column. In this condition, the penetration became shorter than that of the individual penetration. However, the penetration did not changed after spray-to-spray impingement. From the photographs of jet-to-jet impingement, it was confirmed that the liquid film was formed by the impingement, and then this liquid film disintegrated to small droplets. In the spray-to-spray impingement, on the other hand, the relatively large droplets still existed in the impinged spray, because the two sprays crossed each other without disintegration of the droplets. The photograph of the spray-to-spray impingement showed that the droplet-to-droplet impingement in the spray was rarely observed. Further, the chance of coagulation of the droplets was less observed than the disintegration of the dropled. These behavior of the spray-to-spray impingement agreed with the reduction of the Sauter mean diameter of the impinged spray.
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南谷, 覺正
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application/pdf<br />Departmental Bulletin Paper<br />This essay is an attempt to analyze and explicate The Old Man and the Sea by Ernest Hemingway from the viewpoint that the text represents the author's insight into man, particularly
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man when he is fighting. It discusses the ingenuity of the novelette's structure, the correspondences between the old man and the fish, the shifts in the old man's psychology, and nature's revenge against man's trespasses.
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田村, 泰彦
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application/pdf<br />Departmental Bulletin Paper<br />Recently, the number of companies which have introduced "group ware" have increased. "Group ware" refers to software programs that have been created to support groups dealing with
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specific jobs. Other than Email, group ware would normally include electronic notice boards and schedule management, document management and other functions. Lotus Notes and Microsoft Exchange could be considered to be typical "group ware" programs. Japanese computer makers are now lining up their own original software programs, and word has it that some of these are already being shipped out to users. However, according to a survey of users which appeared in the February, 1997 edition of "Nikkei Computer" with regard to the uses of those companies which intend to introduce "group ware" programs, the following data was obtained. (1) Email, over 40% (2) electronic notice boards and information collaboration t rough a data base, 30% (3) work flow management and other business system cons ruction, less than 10% In this manner, while many companies have already introduced "group ware" into their operations, the only basic functions which are actually being utilized to any extent are the "Email" and "electronic notice board" functions. Only a very small percentage of those companies have yet to take advantage of the "document management" function, which was the main strength of the essential design of the programs and, likewise, only a few of these companies have been able to accomplish any results by using the "information collaboration" function. Therefore, it is my intention to focus upon this "information collaboration" function within this report by dealing specifically with the following three issues : (1) the situation in certain advanced companies which have already been utilizing the "information collaboration" function on a trial basis, I (2) Issues regarding the introduction of a "information collaboration system" in the future, (3) furthermore a survey of the "intelligent properties management" function which is the ultimate objective of an "information collaboration system"
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荒木, 詳二
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application/pdf<br />Departmental Bulletin Paper
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山内, 春光
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application/pdf<br />Departmental Bulletin Paper<br />First, this article explains how ethics can deal with social and information studies which is under construction. Then, it answers the question why three persons, who are Nogi, K,
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and Sensei, commit suicide in Soseki Natsume's Kokoro from the point of view of the relationship between Japanese ethics and social and information studies.
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| 23.
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小林, 徹
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application/pdf<br />Departmental Bulletin Paper<br />William Wordsworth wrote A Guide Through the District of the Lakes under the influence of a cultural movement which had stemmed from he picturesque aesthetics initiated by William
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Gilpin and others. It is evident that this work is in the tradition of a guidebook because the author is loyal to its conventions which Gilpin and Thomas West, another picturesque advocate and famous guidebook writer, formulated. But Guide is unique In a certain deviation from the tradition, and that is where the author goes beyond the picturesque aesthetics and thus Wordsworth, the poet and present-day wrier, emerges. In the historical description of the landscape of the Lake District, the author blamed late settlers for inadequate management of the area which led to deterioration of the landscape, and articulated the social shift to the machine-based production system which too had begotten its decline. Then he made some modification proposals as well as the plan for fashioning this region into national property, so Guide is also the book of accusation and improvement. The pivotal question is what enabled him to state these things. Wordsworth did not perceive landscape as the picturesque school had done and recommended. They view nature as a picture, which allows people to see selectively, while he views it as it is, including the changing aspects of the landscape even if they are unappealing. And by applying this visual mode in the work itself, Wordsworth tried to convert the taste or the value system of his contemporaries from aesthetical to environmental, and this intent is substantially the same as the one expressed in Lyrical Ballads, where the poet aimed to displace the readers' traditional ideas of poetry and poetics. Lastly, Guide could be regarded as the call to protect the environment, which is unquestionably of paramount concern to us today.
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| 24.
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沖田, 健吉
概要:
application/pdf<br />Departmental Bulletin Paper<br />One of Keynes's, contribution to economic analysis was to lay emphasis on uncertainty, as not be managed by the frequency theory of probability. He pointed out that every
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economic agent are forced to make decision in the shortage of the relevant information. Especially, they are unable to forecast correctly the future events by reason of extremely incomplete information. However, if there were no daily and special decision-making in the midst of darkness concerning future time, our industrial soceity could not develop. In my opinion, Keynes analyzed decision-making under uncertainty throughout his whole life as economist. His analytical tools probability, weight of argument, uncertainty, confidence, convention appear mainly in Treaties on Probability. The General Theory, and 1937 Quarterly Journal of Economics article. In this paper, I will study inner structure and mutual relation of these tools as follows : (1) Induction and Probability (2) Uncertainty and Economic World (3) Weight of Argument (4) From Uncertainty to Convention (5) Social Philosophy of Convention Supplement : Uncertainty and Progress of Information Technology
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| 25.
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中島, 照雄
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application/pdf<br />Departmental Bulletin Paper<br />When we foresee the aged society and internationalized economy, the fundamental tax rerorm must be implemented. In order to secure the long-life and welfare society, playing due
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attention to the vitalization of the economy, we have to form the loan immediately to construct the new tax system which strikes the plan immediately to construct the new tax system which strikes the good balance among income, consumption, property etc. And, this report, which gives a study of Basic Concepts of Necessity of Tax Reform and Reduction of Individual Income Tax Burden and Corporate Income Tax Burden, and so on, is presented as follows : 1. Introduction. 2. Public Finance in Japan : An Overview. 3. Functions of Public Finance and Principles of Taxation. 4. Lesson from Reagan Tax Reduction. 5. Political Economy and Reform of Corporate Income Tax Burden. 6. Conclusion. In the above chapters, I have investigated various issues regarding Tax Reform.
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| 26.
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堀, 正 ; 野村, みどり
概要:
application/pdf<br />Departmental Bulletin Paper<br />The authors develop in this article a discussion on the present situation of measures for students with disabilities and measures against sexual harassment in national, public and
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private uilversities of Japan. The discussion proceeds on the basis of the data from a questionnaire addressed to the presidents of universities. All of 214 universities (45 national, 30 public, and 139 private) answered the questionnaire. About 60% of the universities admit disabled students in all of their faculties. The total number of the students with disabilities is 1044,91% are enrolled in private universities. Of these, students with physical disabilities are 70%. Most of the presidents show the necessity of both a public support system for students with disabilities and some measures against sexual harassment. Only six of the universities provide some measures against sexual harassment in all of their faculties, and three provide them on the faculty basis as well. Twentyseven universities, however, show their preparation. The increasing necessity for some measures against sexual harassment seems to be recognized from the fact that 55% of the universities consider "Much necessary" or "Comparatively necessary" as their response to the questionnaire. Some free opinions of the presidents support the necessity of measures against sexual harassment, but others find no necessity partly because any problem of this kind had never occurred in their universities. It seems that, university administrations assign a low order of priority to the issue of measures for students with disabilities and measures against sexual harassment.
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| 27.
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石川, 真一 ; 三上, 紘一
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application/pdf<br />Departmental Bulletin Paper<br />The 3.5 billion years' history of life shows that the most important key factor for human survival is to manage the environmental problems such as decomposing and re-use of many
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kinds of man-made wastes. Many industrial actions has been taken and they are called as environmental business. They will form a huge market of about 24000 billions yens in Japan within 10 years, and will compensate the shrinking market of mass-production. There are also many non-governmental organizations (NGO) activities for improving global environment, showing that the break-through is coming by breaking down the many kinds of existing borders. It is a very good news that the ISO 1400 series, which are the international standards for industrial activities to improve the global environment, are well accepted in Japan. Over 1000 organizations in Japan have already got the ISO 14001 certification, Ieadin the rest of the world. A new paradigm is that the improvement of global environment will lead to the better future for human beings. For this paradigm, decomposers should manage all kinds of wastes to re-use, the cyclic relationships of producers-consumers-decomposers should be made, and innovations should be done for cleaning up the environmental pollutants and reproducing the non-recyclable resources such as oil.
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| 28.
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上林, 邦充
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application/pdf<br />Departmental Bulletin Paper<br />The "constitutionality" of the wire-tapping as the meas re of the criminal investigation is affirmed almost unanimously. But, the commonly accepted theory regards it "unlawful" because of
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lack of express provisions in the exisiting Criminal Procudure Act. The latest judiciary precedent that allowed the wire-tapping through a inspection warrant is extremely problematical.
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今村, 元義
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application/pdf<br />Departmental Bulletin Paper<br />This paper tries to analize the tertiary industry from the point of view of Marxian Economy, by examining the theory of professor Haruo Kaneko, regarded as the popular view of
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it. The economic significance of the material production, both the primary industry and the secondary industry, is very clear. But, the tertiary industry includes many kinds of labor which don't form the tangible use-value. We call it the service industry in a broad sense. Professor Kaneko gives the definition of service labor from consumer's standpoint, and concludes that contemporary capitalistic economies are not the post-industrial society, but have entered the new stage of what is called the industrial soceity.
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| 30.
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中村, 喜美郎
概要:
application/pdf<br />Departmental Bulletin Paper<br />These notes present a documentary record of the research done for creating a Model Ordinance on the Protection of Personal Data in public and private section on the municipal level
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in Japan, carried out as a seminar topic in Legislative Informatics.
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| 31.
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黒須, 俊夫
概要:
application/pdf<br />Departmental Bulletin Paper
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| 32.
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概要:
application/pdf<br />Departmental Bulletin Paper
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| 33.
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舘野, 正樹
概要:
application/pdf<br />Departmental Bulletin Paper
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| 34.
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八木, 尚志
概要:
application/pdf<br />Departmental Bulletin Paper
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| 35.
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青木, 繁伸
概要:
application/pdf<br />Departmental Bulletin Paper
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| 36.
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中村, 喜美郎
概要:
application/pdf<br />Departmental Bulletin Paper
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| 37.
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概要:
application/pdf<br />Departmental Bulletin Paper
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| 38.
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Yumin, SHANO ; NEZU, Kikuo
概要:
application/pdf<br />Journal Article<br />An effective method for improving the signal-to-noise ratio from measurements of bearing housing vibration is presented.The method is based on the conventional adaptive noise cancelling
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(ANC) technique principle;it varies the main signal input and reference signal input.Since the main and reference inputs signals are collected at different times, this method is called asynchronous adaptive noise cancelling (AANC).It can improve the signal-to-noise ratio, as in the case of the detecting bearing faults when vibration signals of machinery are collected under low-frequency noise condition.In combination with AANC, statistical analysis, enveloping spectrum analysis techniques are used for detection of bearing fault and diagnosis.Experimental result has shown that these techniques can be made more effective only after AANC has reduced the background noise from the diagnostic signals.A new approach is proposed to the traditional fault detecting for self-aligning roller bearings when the shaft speed is low (250rpm) or high (1000rpm) condition.
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| 39.
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伊東, 明俊 ; 天谷, 賢児 ; 新井, 雅隆 ; 三舩, 博史
概要:
application/pdf<br />Journal Article<br />This paper experimentally investigates a behavior of a bioconvective pattern under super gravitational fields. Experimental materials are the high density culture media of Tetrahymena. A
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centrifugal force was used to synthesize various super gravity conditions by using a spin tester that can generate 1-12[G]. To realize the decreasing effect of bioconvection pattern size by the increase of synthesized gravity, different lengths of a rotative beam are used to change the rate of Corioli's force and synthesized gravity. The main results are as follows: (1) The size of the convection pattern is reduced by an increase of the synthesized gravity. (2) Under synthesized gravitational field, the stream mode of bioconvection is changed by the Corioli's force. (3) The maximum transition velocity (upward, downward) of Tetrahymana is obtaind with the 2-4[G] condition. (4) The decrease in the size of convection pattern is due to the composite gravity.
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| 40.
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ISMAILOV, Murad ; DURST, Franz ; OBOKATA, Tomio
概要:
application/pdf<br />Journal Article<br />In the present study an LDA-based technique was applied to analyze details of
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a transient pipe-flow induced upstream by a fuel ingector. Due to highly accurate measurements of the instantaneous time series of velocity, fuel flow rate and pressure gradient were achieved. The pipe flow has been driven under an injection pressure of 0.6MPa at high injection frequencies of 25 and 50 Hz. The influence of the outflow orifice diameter, varid in range from 100 to 500 μm, on the transient pipe flow dynamics has also been described. The results show that transient behavior of rapid oscillating pipe flow is remarkably and systematically dependent on injection frequency and duration as well as on the orifice diameter.
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| 41.
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ISMAILOV, Murad ; ISHIMA, Tsuneaki ; OBOKATA, Tomio ; TSUKAGOSHI, Masayoshi ; KOBAYASHI, Kazumitsu
概要:
application/pdf<br />Journal Article<br />Time-dependent centerline velocity is measured using LDA-flow meter. Swirl inj
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ector at frequencies of 22 and 46 Hz generates oscillated flow under high-pressure from 4 up to 7 MPa. The encoded time-series of velocity is used to reconstruct the time-variable series of instantaneous flow rate and pressure gradient. Transient injection dynamics are analyzed to obtain basec characteristics of an injection system that will be able to be used for real time monitoring or active controlling of high-pressure gasoline injectors. The results obtained through analyzing the integrated mass rates within a cycle, indicate that a certain injection system is characterized by the flow rate constant γ which independent on injection duration and can be obtained from only accurate measurement of centerline velocity in the fuel transport pipeline. The present technique allows us to simplify the injection model and can be effectively adopted for practical employment on active and passive control with respect to gasoline direct injection engines.
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| 42.
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ISMAILOV, Murad ; ISHIMA, Tsuneaki ; OBOKATA, Tomio ; TSUKAGOSHI, Masayoshi ; KOBAYASHI, Kazumitsu
概要:
application/pdf<br />Journal Article<br />A high-pressure swirl type spray has been experimentally analyzed by using a phase Doppler anemometer(PDA). The experiment was performed with an injection pressure of 5 MPa and an injection
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frequency of about 46 Hz. The PDA data was obtained in a two-dimensional plane and arranged with the injection phase angle. The arranged data of mean velocity, Sauter mean diameter, and droplet number density were visualized by using commercial software. In this paper, the data were compared with the results of visualization. It is indicated by the experiment that the large velocity and large size droplets initiated from the injector with small spray angle at the beginning of the valve opening duration. This stage was called core jet. In the next stage called quasi umbrella spray, the spray developed with large spray angle. After closing the valve, the spray remains increasing its velocity and diameter. This was caused by the "post injection". Using PDA, the detailed feature of the spray can be discussed with high temporal resolution.
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| 43.
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藤沢, 延行 ; 井上, 智 ; 横田, 正二 ; 田名網, 弘 ; 渡部, 功 ; 高野, 祐二
概要:
application/pdf<br />Journal Article<br />Air flows in a heater unit for automobiles are studied by flow visualization w
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ith tracer injection technique and the visualized images are analyzed by cross correlation method to obtain the velocity distributions in the unit at various mixdoor angles. The results indicate the variations of flow pattern in the heater unit with the mixdoor angles and the appearance of strong interaction between separated main flow and circulating heater flow at relatively large mixdoor angles, which promotes the flow mixing and simultaneously increases the pressure loss inside the unit. The flow fields in the heater unit are calculated numerically based on three dimensional momentum equations combined with κ-ε model of turbulence and with an experimental flow model of heater core. The numerical results reproduce well the experimental flow patterns in the heater unit, but there exits some deviations in the mean velocity and surface pressure distributions at large mixdoor angles.
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| 44.
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HAMANA, Koei ; HAMANA, Hiroshi ; ITOH, Takashi
概要:
application/pdf<br />Departmental Bulletin Paper<br />The polyamine patterns of 21 strains of extremely halophilic archaebacteria, including three newly described genera, were examined. Agmatine as the major polyamine was found in
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all strains, while putrescine was found in many, but not all strains. These polyamine profiles are consistent with those of 47 strains of the extremely halophilic archaebacteria published previously, but are different from any other groups of archaebacteria. Thus, the polyamine profile of the halophilic archaebacteria serve as a useful chemotaxonomic marker within the archaebacteria.
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| 45.
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松房, 利憲 ; 小林, 夏子 ; 徳江, 与志子 ; 山勝, 裕久 ; 中村, かおり
概要:
application/pdf<br />Departmental Bulletin Paper<br />群馬県作業療法士会では1996年度から1.地域委託事業などの窓口,2.地域活動情報と機会の提供,3.人材登録リストの管理・活用を活動
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方針として地域リハビリテーション部を設置した。この事業計画が会員の意向と整合性を持ち支持されるかの把握を目的に,会員107名(1996.3月現在)に対し,地域活動とそれに対する参加意向の質問紙調査をした。結果は県内の地域リハビリテーション活動並びに作業療法士が行っている地域活動が不十分と考えられており,多くの会員が参加意向を示したことから,地域リハビリテーション部を中心に活動方針に乗っ取って充実を図る必要性が認められた。また行政の方針とも相まって組織的活動に取り組み,徐々に行政を中心に地域活動の拡大が得られている。地域リハ活動の充実に向けて課題は多いが,地域リハ部を中心にさらなる活動が望まれる。
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| 46.
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小林, 夏子 ; 山勝, 裕久 ; 松房, 利憲 ; 徳江, 与志子
概要:
application/pdf<br />Departmental Bulletin Paper<br />Rozierらの質問項目を用いて,群馬大学'94年度(3年制)および'97年度(4年制)OT学生:各20人を村象に質問紙調査を行い,
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加えて米国OT学生(4年制)との職業選択志向性について検討した。結果:1.調査票の回収率は95%である。2.'94・'97年度生は共通して「将来性,多様性がある仕事」を支持するが,「教育や管理面の仕事」の支持は低い。3.'97年度生は「自然科学や身体知識」の知識因子を,'94年度生は「高額給料や社会的評価」の外的因子を支持する特徴がある。4.'94・'97年度生と米国OT学生とは共通して,「他者への援助志向」および「将来性,多様性のある仕事」を支持するが,「教育や管理面の仕事」の支持が低い。5.職業選択理由の平均支持率は,米国OT学生の方が高く多様な志向性を示す。今後これらの把握を基にOT教育のさらなる充実が望まれる。
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| 47.
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小林, 夏子 ; 松房, 利憲 ; 山勝, 裕久 ; 徳江, 与志子 ; 岩崎, 清隆 ; 内田, 篤 ; 中村, かおり
概要:
application/pdf<br />Departmental Bulletin Paper<br />臨床教育に対する現状と問題把握を意図して,54施設の指導者92名を村象に郵送質問紙調査を実施した。結果,1.調査票の回収率は82%,
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2.指導者は実習の現状に一応の満足を表明した。とくに満足が高かったのは教師による訪問:「実習訪問」と「症例報告集」,不満足だったのは学生の「知識,技術」であった。3.指導者の属性では,男性,精神障害分野,2・3年担当,臨床経験11年以上がもっとも満足が高かった。4.今後の課題として,「知識と技術,評価関係,実習態度,考察力」等が不足していると指摘された。また実習の拡大については,指導者の過半数が不可能と判断した。これらの具体的な改善に加えて,指導者一教師間の共通認識に基づく協業の必要性が示唆された。
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| 48.
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山勝, 裕久 ; 本間, 美智子
概要:
application/pdf<br />Departmental Bulletin Paper<br />群馬大学医学部附属病院リハビリテーション部において過去1年間に月1回の頻度で計11回のパーキンソン教室を開催した。のべ対象者は12名
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(男性6名,女性6名),全体の平均年齢は63.0才で重症度はYahrのステージIVの者が比較的多かった。毎回の平均参加人数は6.4人で3回以下の低頻度参加群7名と8回以上の高頻度参加群5名に大きく分かれた。プログラム内容では当初パーキンソン体操,粗大運動を含むレクリエーションを中心に行っていたのが,最近ではこれに言語訓練が加わり定着してきた。最近では参加者が特定の対象者(高頻度参加群)に限られてきており,これを打開するために年間計画の作成,プログラム内容の充実などの必要性が感じられた。
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| 49.
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笠原, 恵 ; 高橋, 美帆 ; 徳江, 与志子 ; 山勝, 裕久
概要:
application/pdf<br />Departmental Bulletin Paper<br />脳血管障害患者15名にCOPMを施行し,患者個々の挙げた問題点5項目に対する遂行,満足について患者とセラピストの評価結果を比較した。
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遂行即ち能力に関してはほとんど差がなく,満足に関してはセラピストの方がやや高めに採点する傾向が見られた。本来COPMにはない患者とセラピストの挙げた問題点の比較では,全体の一致率は65.3%であった。分野別に見ると患者は身辺動作に強い関心(患者61.3%,セラピスト49.3%)を持っており,セラピストは余暇活動に高い関心(セラピスト25.3%,患者14.7%)を持っていた。COPMでは面接という過程を通し,対象者を取り巻くすべての領域から問題を抽出するように工夫されている。また,身辺動作という機能面にとらわれがちな対象者に広い視点を持つことを援助するとともに,セラピストが患者の認識を知る点でも有効と思われる。
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| 50.
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高倉, 真佐美 ; 小林, 夏子 ; 岩井, 恵子 ; 布施, 裕美 ; 徳江, 与志子
概要:
application/pdf<br />Departmental Bulletin Paper<br />2年前から高校生を対象に,人材確保と作業療法PRを目的とする「作業療法1日体験」事業を実施して,高校生と作業療法士への質問紙調査を行
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ってきた。従来,高校生には好評で実施の意義が認められた。他方,受け入れ担当の作業療法士からは自己の役割遂行と対象に対する満足・不満足が表明されてきた。今回本事業を充実させようと,資料や方法の改善から受け入れ負担の軽減を試みたところ,作業療法士の不満が減少した。しかし受け入れを作業療法士希望者だけに限りたいとの声も出された。今後の発展に向けて,実施方法の継続的な改善および進路を模索する対象に対する幅広い受け入れの是非について,事業の意義にそって組織的に再検討する必要があると思われる。
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