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Article type: Cover
2005 Volume 38 Pages
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Published: January 31, 2005
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Article type: Index
2005 Volume 38 Pages
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Published: January 31, 2005
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Takaharu KURODA, Tadateru ISHIDE, Isao ODA, Makio SHIMIZU
Article type: Article
2005 Volume 38 Pages
1-10
Published: January 31, 2005
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Recently, the tendency depending on foreign operations has been increasing from the viewpoint of cost control in many industrial fields. In such circumstances, the expectation to creative education is becoming more and more for engineering education in addition to a conventional practical education in college of technology. In this paper, a new electric engineering experiment for the fifth-year students has performed to develop their creative faculties as one of the synthetic experiments. The design and manufacture of an electronic circuit using peripheral interface controller PIC has carried out through a original theme set by students in the field of instrumentation and control in this experiment. This experiment consists of seven parts; (1) fundamental design (2) circuit design (3) manufacture of hardware (4) programming (5) experiments (6) report writing (7) presentation. One manufacturing group consists of four to five students. These parts have progressed in cooperation with other students in the same group related micro computer control(II) which is one of the lectured subjects. As a result of the questionnaire to the students on this experiment, we got some conclusions as follows; 1. Most of students have been satisfied with their products containing an electronic circuit and the PIC one-chip microcomputer. 2. Most students have been interested in the advanced learning of the manufacture of electrical and electronics circuits. 3. Furthermore, the efforts to show creativity in each article were seen.
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Hisao SUZUKI
Article type: Article
2005 Volume 38 Pages
11-16
Published: January 31, 2005
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As a dry bearing with the self-lubricating, usual sintering method graphite quantity Cu-Sn-C(graphite)sintered material opposite material S45C refining material frictional wear characteristics graphite quantity, etc. As the result, the graphite addition is more effective for the frictional wear, and as the graphite dosage is more abounding, effect. The wear resistance was the best than S45C hardening material and S45C as received of opposite material.
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Hiroshi OHSAWA, Hayato TAKITA, Hideo SAOTOME
Article type: Article
2005 Volume 38 Pages
17-20
Published: January 31, 2005
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In the electric circuit simulation the Spice is mainly used, and in the power-electronics circuit simulation it is not exception. In the power-electronics circuit simulation, the details of the nonlinear device models is important. Although, the reactance model which is one of the nonlinear devices is not enough to use with power-electronics circuit simulation. Therefore we proposed a reactance model equation which is based on the differential permeability. In this paper, the model equation of the differential permeability is described with a exponential function, and we confirmed experimentally that it equation approximate to B-H curve of a Mn-Zn ferrite core.
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Kuniharu YOSHII, Hiroshi OHSAWA
Article type: Article
2005 Volume 38 Pages
21-24
Published: January 31, 2005
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Global environment problems attract attention on a world-wide scale today. In it, the source of clean energy (e.g. Solar battery, Wind power generation, and more) is required. In this research, the buck converter linked with ZVS buck-boost converter is proposed. And the part of ZVS buck-boost converter is connected to two power sources (one is a solar battery and the other is wind power generation ) . These two power sources can transmit electric power mutually, from one source to other source. Therefore the transmitting power between two sources is confirmed by computer simulation.
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Yuji AZUMA
Article type: Article
2005 Volume 38 Pages
25-28
Published: January 31, 2005
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The bipolar field change pulses produced by intra-cloud lightning discharge processes have been recorded with our observation of lightning. The wave forms are obviously different from those produced by return strokes in cloud-to-ground lightning. Pulses with a positive initial polarity tend to occur at regular interval. Negative pulses are usually produced intra-cloud lightning discharges at more random interval. In this paper, it is shown characteristics of the time components in bipolar pulses.
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Yasuyuki SAITOU, Shuuhei WADA, Masao MARUYAMA, Hiroyuki WASAKI, Keiich ...
Article type: Article
2005 Volume 38 Pages
29-35
Published: January 31, 2005
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This paper shows the computer system for education at Department of Information and Computer Engineering. This system adopts the Linux OS. Moreover client machines are based on the diskless system. All users can use the same software environment on any machine both in the exercise room on 3rd floor and in the laboratory room on 4th floor at No.3 research building. The server machines are very stable, and serious troubles have not occurred since this system began to work in April 2001.
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Yasuyuki SAITOU
Article type: Article
2005 Volume 38 Pages
37-42
Published: January 31, 2005
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This paper shows the network system in dormitory. The dormitory network system started in 1993 and then it has expanded gradually. The server machine has been working since 2002. It adopts the Linux OS, and it has many function such as NIS, NFS, DHCP and Web server. It is easy to manage and maintain the dormitory network.
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Masaki OHKI, Jyunji SHIRAI
Article type: Article
2005 Volume 38 Pages
43-46
Published: January 31, 2005
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In recent years, river has been built in consideration of environment or the scenery. This research inserts deflector in a curved river, and changes the direction of the streamline through a curve and thereby, the influence of the flow by curve is eased. When inserting deflector in a curved river, length is 40% of river width, and if an insertion position is insertion in 63% at the back of a curve, it is effective in direction change of a streamline. Moreover, if deflector is inserted by plurality rather than the singular, a direction change of a streamline will be obtained a big effect. However, it becomes the cause that makes the streamline of a down-stream produce disorder, and has left some problems. This research experiments by changing the curvature of a curve, and reports the result examined about the validity of the deflector by change of curvature.
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Nobuhiro ONIZUKA, Taichi KANAI
Article type: Article
2005 Volume 38 Pages
47-55
Published: January 31, 2005
Released on J-STAGE: May 02, 2023
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This paper describes a problem of a suitable index of walking road surface. This main purpose of this paper is to examine the problem from a synthetic viewpoint with sports science, sports medical, civil engineering and mechanical engineering. Questionnaires of walking, strength examinations of road surface and biomechanical examinations are being made for this purpose. It is shown that we must establish a suitable index of walking road surface for walkers.
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Toshiaki NAKAMURA
Article type: Article
2005 Volume 38 Pages
57-62
Published: January 31, 2005
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Most of the college students will have chance to work on the world stage in the future. They have to adjust themselves to live in the circumstance where they are surrounded by the people who have different senses in daily affairs from their owns. In daily lessons for English learning they are trained to acquire the international senses or global points of views. In order to make them have the global senses the instructors have to know how the students have had such senses so far. In this study the writer has given the students some kinds of checking tests for several times and collect the data upon which they are examined to be judged for the basement of international senses. Mainly there are two points about the research. One of them is concerning to the countries in the world with the relation of the United Nations. The other is related to their native affairs. The informants are all Japanese. They are checked how they have knowledge about the Japanese culture.
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Tetsuya SEINO, Hiromitsu SAKATA, Ikuo ISHIYAMA
Article type: Article
2005 Volume 38 Pages
63-68
Published: January 31, 2005
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The purpose of this study was to measure a variability in blood pressure caused by the handgrip exercise which was divided into 6 stages according to the incremental intensities, and was to draw up an outline of the specific exercise test with isometric handgrip (IHG) to estimate a possibility of hypertension in future. For this study, 10 healthy men aged 23-62 years old performed the IHG as voluntary subjects. The exercise test was consisted of six degrees of intensity which were 8.3%, 16.7%, 25%, 33.3%, 42.7% and 50% of maximum voluntary contraction (MVC) with IHG, and performed in a sitting position. Each intensity of IHG was kept for 10 seconds, totally subjects carried out the exercise for exact 60 seconds. Systolic and diastolic blood pressure (SBP, DBP) in all subjects were increased dramatically at the intensity of 25% MVC and more. These results indicate that typical change of blood pressure would be caused for the sake of vasoconstriction induced by strenuous IHG. Especially, excessive increase of blood pressure was observed at the intensities from 25% to 50% MVC, therefore the exercise test with IHG performing over 25%MVC might be able to estimate a possibility of hypertension in future.
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Ikuko SHIBATA
Article type: Article
2005 Volume 38 Pages
69-80
Published: January 31, 2005
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In diesem Aufsatz analysiert man das Kapitel N ,,Erkenutnistheoretisches, Theorie des Fortschritts" von Walter Benjamins Das Possagen-Werk. Jeder Artikel und jeder Paragraph des Kapitel N wird nach Themen und Personeunamen klassifiziert und systematisiert. Das Kapitel N von Das Passagen- Werk ist wichtig, um die Methode von W. Benjamin zu verstehen. Daher ist dieser Aufsatze eine Untersuchung der Methode von W. Benjamin.
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Hiromitsu SAKATA, Tetsuya SEINO
Article type: Article
2005 Volume 38 Pages
81-86
Published: January 31, 2005
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In this research, the author compared the subjective pace distribution by using 800m running on grand (SPR) with the passive pace distribution by using treadmill running (PPR) by using the intermittent speed increasing method change of the lactic acid concentration in blood at the time. And the purpose was to consider the possible calculation method of LT-2 also in the contestant of an admission level. Consequently, the speed of LT-2 in SPR was lower than PPR, and the lactic acid concentration in blood was high at that time. In order to obtain an index effective in training, when LT-2 of the contestant of an admission level were computed, it was made clear that the numerical value near a race pace with the more nearly actual PPR is acquired.
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Youichi IWASAKI
Article type: Article
2005 Volume 38 Pages
87-96
Published: January 31, 2005
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The purpose of this study was to lay the foundation for considering the differences between the vocabulary used in junior high and high school English textbooks used in Japan. We therefore set out to create four different word lists using spread sheet software and a text editor. The first word list, which was named JH_WL, consists of those words which are used in the Japanese junior high school textbooks of English. The second one, named Hi_WL, is the list of those words which appear in the Japanese high school textbook of English. In this list, the frequency of occurrence of each word was counted. And the third word list, named Target_WL, is composed of those words included in Hi_WL but not in JH_WL, that is to say the difference set between Hi_WL and JH_WL. The fourth one, which was named Int_WL, is the set intersection of Hi_WL and Target_WL. As a result of the analysis, the following results were obtained: JH_WL has 2,593 types; Hi_WL has 14,801 tokens, 1,677 types and the TTR (Type/Token Ratio) is 0.11; Target_WL has 1,740 tokens, 664 types and the TTR is 0.38; Int_WL has 13,061 tokens, 1,031 types and the TTR is 0.07.
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Masaru KAMATA, Atsushi NAKAMULA
Article type: Article
2005 Volume 38 Pages
97-106
Published: January 31, 2005
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An attempt to formulate the extensions of the KP hierarchy by introducing fractional-order pseudo-differential operators is given. In the case of the extension with the half-order pseudo-differential operators, a system analogous to the supersymmetric extensions of the KP hierarchy is obtained. Unlike the supersymmetric extensions, no Grassmannian variable appears in the hierarchy considered here. More general hierarchies constructed by the 1/Nth-order pseudo-differential operators, their integrability and the reduction procedure are also investigated. In addition to finding the new extensions of the KP hierarchy, a brief introduction to the Riemann-Liouville integral is provided to yield a candidate for the fractional-order pseudo-differential operators.
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Satoshi YAMASHITA
Article type: Article
2005 Volume 38 Pages
107-110
Published: January 31, 2005
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Graphs are the figures which have some points (called vertices) and some curves (called edges) with two vertices as endpoints. Planar graphs are graphs which are able to be drawn on the plane without selfcrossings. The graphs drawn in this way are called plane graphs. The plane graphs whose edges are all straight line segments are said straight line plane graphs. Two plane graphs are ambient isotopic if one can be transformed into the other in the plane without selfcrossings. In 1948 I.Fary proved that every plane graph is ambient isotopic to a straight line plane graph. This theorem is called Fary's theorem. We consider the problem that if some edge-disjoint paths of a plane graph are given, then how conditions are satisfied that the plane graph is ambient isotopic to a straight line plane graph such that these paths are straight line segments. In this paper, we give the necessary conditions that the plane graph is ambient isotopic to a straight line plane graph like this.
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Masayoshi SEKIGUCHI
Article type: Article
2005 Volume 38 Pages
111-114
Published: January 31, 2005
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Linear subproblem is a subclass of the Newtonian N-body problem where configuration space is a linear subset of R^<vN> (v = 2 for planar problern, v = 3 for spatial problem). If its degree of freedom (i.e., dimension of configuration space) is f(< vN), then it is called a linear f-subproblem. In this paper, we show a theorem on linear subproblems, i.e., the general planar three-body problem cannot be a linear 3-subproblem.
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Masatoshi TOKITA, Mikiko NAKANE, Kazuhiro ASOH, Maki HOSHINO
Article type: Article
2005 Volume 38 Pages
215-218
Published: January 31, 2005
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This paper presents a design of the training materials for micro computer Control. This training system is composed of mobile robot, infrared remote controller and personal computer. Using this system, student can learn electronic fundamentals, digital hardware, assemblers and high level languages for microcomputers, computer peripherals and interfacing, and digital data transmission.
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Masayoshi SEKIGUCHI
Article type: Article
2005 Volume 38 Pages
225-226
Published: January 31, 2005
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I obtain the asymptotic expansion of a function which appears in t,he potential function of the self-gravity system in rosette configuration.
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Article type: Bibliography
2005 Volume 38 Pages
227-231
Published: January 31, 2005
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Article type: Appendix
2005 Volume 38 Pages
App1-
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Article type: Cover
2005 Volume 38 Pages
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