Aerodynamic characteristics which are important to design aircraft are closely related with the flow around a body. In studying this flow, recently the analysis of fluid model considering the properties of three dimensions is done briskly. But the flow around three dimensional body is different from the case of two dimension, and is not clearly defined in the existing circumstances, because there are various separation patterns for the magnitude of attack angle, and these patterns are complicately combined with the others. In this study, it is the purpose to make clear experimentally the separation of boundary layer around three dimensional body having an angle of incidence, the patterns of back flow domain, and the structure of vortex. For this purpose, in water tank experiment, a revolving projectile is set to various angle of incidence, limiting stream line and vortex on it are visualized. And in this study some conclusions were got. At firstly, limiting stream line around a revolving projectile could be visualized using phenolphthalein method. Secondly, the flow around a revolving projectile were classified into the domain A of boundary layer flow in which there were fore flows in the bus and circumferential directions, and the domain B in which there were back flows in the bus and circumferential directions, and the domain C in which there were fore flow in the bus direction and back flow in circumferential direction, and the domain D in which there were back flow in the bus direction and fore flow in circumferential direction. And it was elucidated that the extent of separation domain from B to D had magnified as the angle of incidence had increased. Moreover, it was found out that the vortex pattern existed behind the revolving projectile at attack angle 50°. Finally it was found that the primary separation line could be changed a closed separation line at attack angle 65°.

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In this paper we describe construction of an expert system for selecting the turning conditions, by getting the data from workshop. The way of obtaining the optimum cutting conditions is a similar method of thinking of expert engineer in actual machine-shop. In oder to update its own knowledge, it's the system with learning function by a group of neual networks. By the system unskilled workers (beginners) will be able to select optimum conditions such as feed rate of cut and cutting velocity considering surface roughness and efficiency (cutting time).

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This paper deals with the control of hand transfer trajectory using fuzzy reasoning. The motion, when an object to transferred from one point to another in the two-dimensional plane, is classified into five modes. These trajectories of five modes are shown by fourth linear differential equations which are derived through the optimal control theory. Firstly, fuzzy control rules selecting the position in pre-condition and the velocity in conclusion are proposed based on those trajectories. It is shown that the trajectories in all five modes are well reproduced by the proposed rules. Secondly, by taking the differential of acceleration around the start point into consideration, it is shown that smooth trajectories like a human motion are simulated.

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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Construction of spinning Julia-Zee dyon solution in the SO (3) Yang-Mills-Higgs system is attempted by employing the exact Kerr-Newman dyon solution in the curved space-time as a boundary condition at the infinity. To obtain nonzero spin S both the electric and magnetic fields are needed and the system becomes a dyon. The exact Kerr-Newman dyon solution in the limit G → 0 (G : the gravitational constant) has singularities at a ring of radius a = S/M (M : mass of the dyon) on the equatorial plane, and regularization of this solution is discussed by the introduction of appropriate form factors. A system of partial differential equations for these form factors is derived and the spherical Bogomolny-Prasad-Sommerfield solution is obtained in the limit a → 0 and the Prasad-Sommerfield limit.

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A microscope-CCD camera-system consisted of an optical microscope, a CCD camera with an image intensifier and a micro-computer was devised to examine in what manner light penetrates and induces fluorescence associated with photosynthesis in an intact leaf in relation to its morphology. A laser light (Ar, 477 & 488nm) was projected vertically on the leaf and distribution of laser-induced-fluorescence (LIF) in the leaf was examined. Projected light rapidly declined with distance from the surface of the leaf, and distribution patterns of fluorescence strongly depended on the leaf structures and wavelengths of detection. The apparatus devised is considered to be a useful tool to obtain information on damages of leaf functions as well as structures, such as by air pollution at microscopic level.

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A horseshoe mapping has been numerically observed in the planar-circular restricted three-body problem. This numerical result has several implications. First, we can conjecture that there is a sequence of bands of collision orbits asymptotic to the stable manifolds of periodic orbits. Second, the invariant set for the mapping is fractal and its Hausdorff dimension is obtained. Third, the occurrence of chaotic scattering is assured.

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Laser-induced-fluorescence (LIF) is a useful technique to examine structures and conditions of photosystems, and reactions of them to intrinsic and extrinsic environments of leaves. In this investigation, fluorescence spectra were measured using intact leaves of rice plants applied various amounts of nutrients and containing various concentrations of chlorophylls. The spectra were resolved into Gaussian components of fluorescence emitters by curve-fitting method, and the effects of nutrient deficiency on structures of photosystems and self-absorption of fluorescence within leaves were discussed.

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A nonlinear Schrodinger equation for the electromagnetic wave is investigated. Our wave propagates with arbitary angle for a magnetic field. In this paper we used a reductive perturbation method.

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There are not so many researches for Teaching Listening as a foreign language from the point of effective Listening, while many are for other three abilities promotion like Speaking, Reading and Writing. This study starts clearing the reasons why Listening is difficult to teach among the four skills. The writer of this thesis analyses the students' errors from the phonemes and words level. At the final stage the author tries to get the relation between what we call "top down" and "bottom top" ability in Listening. Two hypotheses concerning finding errors in Listening can be proved in this thesis.

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