Research Reports of National Institute of Technology (KOSEN), Kumamoto College
Online ISSN : 2189-8553
Print ISSN : 1884-6734
ISSN-L : 1884-6734
Volume 4
Showing 1-15 articles out of 15 articles from the selected issue
  • [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    2012 Volume 4 Pages 1-6
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    A student information system is a software application for education establishments to manage student data. Many company's products can be scaled to different levels of functionality by purchasing add-on modules. However, their modules are very expensive. Besides, there are lots of teachers that want to student information for education. An information system makes it easier for someone to access the information. This paper describes the development of a roll book system (Roll-System) based on a concept of the client-server model and the open source. The Roll-System is written in the PHP programming language and uses the MySQL database system to store information.
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  • [in Japanese]
    2012 Volume 4 Pages 7-12
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    In this study, dimensionless parameters such as Nusselt number and Prandtl number were examined for the heat transfer correlation for supercritical pressure fluid in vertical laminar flow, based on the data obtained by numerical calculation. From the examination, following results were obtained. (1)Nusselt number has a peak when the bulk temperature is slightly below the pseudo-critical temperature. (2)Relation of ratio of Nusselt number and ratio of Prandtl number can be divided into two regions. (3)At the region where bulk temperature is below the temperature of the peak Nuw/4.36, Nusselt number can be described only with the ratio of Prandtl number.
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  • [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    2012 Volume 4 Pages 13-20
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    Image processing technology has been utilized for the inspection of products or the positioning system in the factory. But recently, the tendency to use the technology for general products has become prominent. One example of such a technology is fingerprint authentication or facial recognition. This study attempts to develop the automatic relief manufacturing system using image data. This system outputs a point cloud data generated from brightness value in image, and CAD data of relief is created by this point cloud data using 3D-CAD system. And then, relief is processed by the machine tool using created 3D-CAD data. In this study, we could confirm the basic process of the relief manufacturing and obtain the trial products. But, the reliefs have not reached the necessarily perfection. So, we are going to improve the system including image processing methods.
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  • [in Japanese], [in Japanese], [in Japanese]
    2012 Volume 4 Pages 21-28
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    The purpose of this research is improving in the products by making the desktop die casting machine using a low melting point alloy and observing phenomenon in the transparent mold made of acrylic resin. Desktop die casting machine is minimum structure, which is composed of an injection part, a mold part, an actuator and a chamber for injection molten metal. The molten metal is injected into the mold with the actuator, and its phenomenon in the mold is observed by using a high speed camera. In this study, two causes that decrease the formability are obtained. One is the turbulent flow caused due to high injection speed. The other is the blowout of the metal from the parting and the air ventilation due to excessive injection pressure.
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  • [in Japanese]
    2012 Volume 4 Pages 29-34
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    This paper presents an experimental device for learning of logical circuit design using integrated circuits and breadboards. The experimental device can be made at a low cost and can be used for many subjects such as logical circuits, computer engineering, basic electricity, electrical circuits and electronic circuits. The proposed device is effective to learn the logical circuits than the usual lecture.
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  • [in Japanese], [in Japanese], [in Japanese]
    2012 Volume 4 Pages 35-40
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    The purpose of this study is to establish more effective disaster prevention and disaster reduction systems by the Joint Government-College. Therefore we reported of conventional findings and reexamined in Yatsushiro City Hall and the Sakamoto branch which I investigated in the past. Then, we examined changes in disaster prevention and disaster reduction of current and past systems. As a result, Yatsushiro City has made a number of voluntary disaster prevention organizations than before, had been developing disaster prevention and disaster reduction systems. However, it was a big difference in what each region of the city. In addition, we found that the disaster prevention and disaster reduction systems of Yatsushiro City changed under the influence of the Great East Japan Earthquake of the last year.
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  • [in Japanese], [in Japanese]
    2012 Volume 4 Pages 41-48
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    The global warming proceeds recently, because of increasing greenhouse gases emitted in the atmosphere by human activities. The global warming may change the local climate that is an important factor in our residential environment. With the global warming, the annual average temperatures are rising in almost all Japanese observatories, while the other weather variables have not been changing obviously. In particular the rainfall at any area is not recognized to be changing or to have any tendency in recent year. However, in this study, we investigate the AMeDAS data to consider the characteristics of the rainfall in Japan. One of the results in this investigation is that the annual average rainfall does not have a significant tendency, while there is a decreasing tendency in no rainfall days and an increasing tendency in weak rainfall (0-1mm ) days almost all over Japan after 1980 to 2010.
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  • [in Japanese], [in Japanese]
    2012 Volume 4 Pages 49-56
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    Nowadays, it is confirmed that the heat island is formed even in the small city. In this study, we performed simulation for Yatsushiro city that is a middle-scale city in Japan with a population of about 130,000 people. We performed the numerical model simulation that is considered to buildings and land usage. The temperature distribution of urban heat island is affected by winds, its turbulence energies causing from buildings and. land use. One of the features is confirmed that the temperature of central part of city becomes higher than the surround since the hot wind converges the center. However, the water around the site of castle park in the center of a city is effective as the cool spot..
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  • [in Japanese], [in Japanese]
    2012 Volume 4 Pages 57-64
    Published: 2012
    Released: March 05, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    In recent years, we obtained a comfortable environment as our living standards rose. On contrary, the amount of waste heat and the emission of CO2 increased. In urban areas, the average temperature nowadays is rising by the heat island effect. In this study, using a three dimensional atmospheric numerical model, we analyzed the change of wind and temperature fields around the site of Yatsushiro Castle Park located in the central Yatsushiro.The results show that the temperature around the site of Yatsushiro Castle tends to be lower than the adjacent urban areas. We can expect the Yatsushiro Castle Park area to reduce the heat island effect as a cool island or a cool spot.
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  • [in Japanese]
    2012 Volume 4 Pages 65-72
    Published: 2012
    Released: March 06, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    This paper reports the exhaustive survey (2011) of the buildings in Yatsushiro-shi, Kumamoto. The exhaustive survey of the buildings in Yatsushiro-shi is the first time. This paper contents about the process of the investigation, the summary of the study method. In addition, this paper reports Machiaruki Yatsushiro Tatemono Map. It is the guide map which I utilize the findings and made. Furthermore, I analyze the findings and consider nine points of the architectural characters in Yatsushiro-shi. For example, about the regional characteristics such as the main hall of a Buddhist temple of the temple, the main shrine of the Shinto shrine, the front shrine. I am going to use this result for more detailed study to carry out in future.
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  • [in Japanese]
    2012 Volume 4 Pages 73-78
    Published: 2012
    Released: March 06, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • Start up of a Study Group to Carry out the Projects with Marketing Sense
    [in Japanese]
    2012 Volume 4 Pages 79-82
    Published: 2012
    Released: March 06, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    It is said that the present age is the times having difficulty in prediction, so that the importance of active learning is increased. In this report, trials of practice learning for developing a skill of finding and solving problems using extracurricular activities and PBL techniques are introduce; building a web server and web application which is used in a company and starting up of a study group to carry out projects are introduces.
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  • Part 2
    [in Japanese]
    2012 Volume 4 Pages 83-89
    Published: 2012
    Released: March 06, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    From 1633 to 1641, Hosokawa Tadaoki was presented with 296 meals by his son, Hosokawa Tadatoshi or others. I analized Tadaoki’s letters. As a result, I found this; Tadaoki liked fish. He liked salman best, konowata secondary, and ayus, lavers and ear shells thirdly. He was fond of a crane, a wild duck, an orange, a persimmon, a chesnut, a matsutake, a melon, sushi, rice cake, miso and ume, too.
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  • [in Japanese]
    2012 Volume 4 Pages 90-93
    Published: 2012
    Released: March 06, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    Hobby electronics is a good opportunity to learn information, communication and electronics engineering. In this study, the electrical display using 8×8 matrix LED is developed for educational material. Additional board for expansion of the display area is also developed. The display is utilized for the subject of our open campus, public lecture etc.
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  • [in Japanese]
    2012 Volume 4 Pages 94-97
    Published: 2012
    Released: March 06, 2021
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    The Nielsen bridge proposed by O.F.Nielsen(Sweden) in 1922 is formed that use of the cable on tensional hanger, and is constructed after 1967 in Japan. The Nielsen-Lohse bridge has the structure form of a parallel arch rib or a basket handle arch rib, and it shows the fine sight and good strength as a bridge. Many researches about the seismic performance of a steel bridge are made, and the seismic design method is becoming up. It is required to develop the method of raising the ultimate strength and the earthquake-proof performance about existing Nielsen-Lohse bridges. Especially, the basket handle arch type erected in three dimensions must investigate the relationship of between axial force and bending moment of arch rib member, and the influence of hanger as tension member to refine the performance under big earthquake. However, there is little research which investigated the performance on seismic load or ultimate strength behavior of the Nielsen-Lohse bridge. In this report, to decide the parameter for structural analysis, it shows the investigated result about the structure characteristic of the constructed Nielsen-Lohse bridges.
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