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2017Volume 51 Pages
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Published: February 24, 2017
Released on J-STAGE: October 31, 2018
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2017Volume 51 Pages
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Published: February 24, 2017
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2017Volume 51 Pages
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Published: February 24, 2017
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Yasuo TATENO
2017Volume 51 Pages
1-6
Published: February 24, 2017
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Midori TODAYAMA
2017Volume 51 Pages
7-14
Published: February 24, 2017
Released on J-STAGE: October 31, 2018
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When students produce a drama, they must communicate each other to share the context. Then, they evaluate what they do themselves. This process can be regarded as learning actively.
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Megumi ABE, Tohru OHTA
2017Volume 51 Pages
15-18
Published: February 24, 2017
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The Japanese tutor system is designed to support international students who have transferred into the third year at National Institute of Technology, Hachinohe College (hereinafter referred to as Hachinohe Kosen). These students have two Japanese tutors in the third and fourth year for two years, in order to receive support in academic setting as well as their college life. The purpose of this study is, from international students' perspectives, to examine international students’ attitudes, experiences, and expectations toward Japanese tutors. A qualitative study was carried out in order to elicit the participants’ perspectives toward their tutors. Open-ended questionnaires were distributed to four international students, who are first year students at Hachinohe Kosen, and they were interviewed. They looked back at the support they had received from Japanese tutors during the first six months of their stay at college, and perceived what influence this support had had.
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Masao MABUCHI
2017Volume 51 Pages
19-26
Published: February 24, 2017
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Mixing cards is a good material for students’ research activity because its mathematical content is rich and experimentation by hands is easy unless the size of the deck is too big. We introduce a mathematical model of mixing cards without using group theory and propose some ideas for students’ research activity.
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Asako SAI
2017Volume 51 Pages
27-33
Published: February 24, 2017
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Akio Kikuchi
2017Volume 51 Pages
35-37
Published: February 24, 2017
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In the academic year of 2014, the attempt to promote the students’ power to guess the meanings of the unknown English words was done by giving the worksheets in the class of National Institute of Technology, Hachinohe College 1st year students. Texts are from extensive reading materials such as Foundation Series and Oxford Reading Trees. Reading the texts, students listed the unknown words on the worksheets with their inferring meanings (without using dictionary). After reading, they checked whether their idea was correct or not. Through this experiment, it was made clear that the students tend to grasp the content of the words by the surrounding information and its form.
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Takahiro NIWA, Yoshimichi NAKAMURA, Yasuo TATENO
2017Volume 51 Pages
39-43
Published: February 24, 2017
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In this paper, we present the results of achievement test in physics in 2015 year and also discuss learning effect of active-learning activities in Hachinohe College.
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Ken SATO, Masayuki SUZUKI
2017Volume 51 Pages
45-48
Published: February 24, 2017
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Shota KOYAHATA, Hisao SUGITA, Hirokazu FUJIWARA
2017Volume 51 Pages
49-54
Published: February 24, 2017
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In recent years, personnel reductions are promoted in educational job site by progress of the declining birthrate. Then, the experienced know-how are lost by the retirement of skilled technical staff who has worked for many years. Therefore, it is necessary to rearrange the educational system for the laboratory experiment with a small number of faculty members while improving the quality of education. As the effort to establish this system, we proposed simplified aggregate moisture adjustment method based on experimental data, and designed mix proportion for Reinforced Concrete and Prestressed Concrete. The aggregate moisture adjustment method was improved to the method based on the measured data from the method estimated by the technical staff with the skills, and then this method made it possible to adjust the moisture with high accuracy and efficiency. In addition, this paper was summarized all the processes about the design mix proportion for Reinforced Concrete and Prestressed Concrete such as the test mixing, estimation of water-cement ratio, and determination of specified mix proportion.
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Jun SATO
2017Volume 51 Pages
55-59
Published: February 24, 2017
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Tadateru KUROSAWA, Syuhei KUBOSAWA, Kazuya KANNARI
2017Volume 51 Pages
61-63
Published: February 24, 2017
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In this paper we review low frequency vibration therapy on healthy parsons. In order to investigate the effects of whole body vibration on the human body, we developed an automatic swing bed under a condition of 1 Hz in frequency, and we present brief summaries of our experimental studies relevant to whole body vibration performed on healthy persons. The most important result was that healthy parsons showed a significant effect in sense of equilibriumof healthy parsons after receiving whole body vibration on the automatic swing bed under a condition of 0.6 and 0.8 Hz in frequency.
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Yuya ISEKI
2017Volume 51 Pages
65-70
Published: February 24, 2017
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This paper described about heating properties of RF (Radio Frequency) heating applicator for hyperthermia treatments. Hyperthermia is based on clinical fact that malignant tissue is weaker than normal tissue under the temperature range of 42 to 43 oC. In the clinic, needle applicator is used to heat deep seated tumor. The advantages of this heating system is local and direct heating is possible. On the other hand, it has some disadvantage, namely, invasive heating method and small heated area. Another major heating device is RF capacitive-type heating applicator. This applicator is consisted from two discoid electrodes. Patient body is sandwiched between these electrodes and is heated by RF electric energy. The advantage of this heating device is non-invasive method and controllable of the hotspot location inside patient body by changing diameter of electrode. However it is not easy to heat deep region of patient body without undesirable hotspot around fat layer. In this paper, first we described about basic heating properties of needle-electrode applicator by using Finite Element Method (FEM). Second, we described about heating properties of RF capacitive-type heating applicator by changing size of two electrodes.
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Norimasa KUDOH, Satoru ISHIBASHI, Hiroyuki KAMAYA, Yoshiaki TADOKORO
2017Volume 51 Pages
71-73
Published: February 24, 2017
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Musical transcription requires much burden even for specialists in the musical field, therefore, many trials of automatic transcription have been being done actively. As musical signals are substantially time varying, we have investigated an LMS-based Fourier Analyzer to accommodate time varying characteristics. In this article, the above adaptive algorithm is briefly reviewed. And then, the analyzing system of Kagura musical signals, which convert analyzed results to the MIDI format, is described. Results in MIDI format are converted to musical scores by using commercially available software in order to verify validity of the system. Finally, necessities of GUI (Graphical User Interface) to support Kagura play and its outline are described.
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Nobuaki MATSUHASHI, Kiriu Sato, Masato Yamahata, Minami Nishikawa, Yut ...
2017Volume 51 Pages
75-81
Published: February 24, 2017
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Hayato NAKANO
2017Volume 51 Pages
83-89
Published: February 24, 2017
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When one cannot neglect errors or fluctuations in a system, whether the system has discrete or continuous degrees of freedom becomes ambiguous. This apparently trivial fact contains much more serious conceptual problems related to informational dissipation and our finite ability of information acquisition.
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Yoshitaka NAKAMURA, Kento NAKAMURA, Seiji TANAKA, Shouhei NANASAKI
2017Volume 51 Pages
91-93
Published: February 24, 2017
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We prepared graphene on Ni foils poly crystal substrate and MgO single crystal substrates with Pt buffer layer by using CVD method. Pt buffer layer were deposited by using RF magnetron sputtering method. We obtained single layer graphene without defects when it was grown on Ni foils substrate.
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Takashi NONAKA
2017Volume 51 Pages
95-98
Published: February 24, 2017
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Mobile devices have the demand for charging their battery. Therefore, improving the convenience of charging is required. Wireless Power Transmission Technology (WPT) can meet this requirement. By using WPT, it is possible to achieve a common charger for various devices. This paper proposes the optimal shape of coils to reduce de viation of c haracteristics by position of the coil using theoretical calculation. It was verified that distributed coil could reduce variation of coupling f actor by measuring the characteristics of the coils. And logarithmic spiral coil was used to calculate circumference characteristics of distributed coil.
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Yasushi HOSOKAWA, Shinji KAWAMURA
2017Volume 51 Pages
99-106
Published: 2017
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Shuhei SASAKI
2017Volume 51 Pages
107-109
Published: 2017
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Currently, renewable energy has been attracting attention as a commitment to environmental and energy issues. However, renewable energy can’t provide a stable power supply due to the influence of the climate. Therefore, we are aiming to development a “Power Charge and Discharge Device” to compensate for the fluctuation power using the magnetic levitation technology of superconductors. In this paper, the principles and characteristics of the proposed power charge and discharge device are described.
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Tetsuo HONMA, Tomoya SHIMAMORI, Akira HASEGAWA
2017Volume 51 Pages
111-115
Published: 2017
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Titania aerogels as a photocatalyst have been prepared by supercritical carbon dioxide drying followed by the sol-gel synthesis using titanium tetraisopropoxide as Ti source. The compositions of titanium tetraisopropoxide (TTIP), isopropanol (IPA), water, and hydrochloric acid as catalyst were optimized to find the best composition for the synthesis of crack-free alcogel by sol-gel synthesis. Supercritical carbon dioxide drying was performed at 40°C, 10MPa and 1 L/min of CO2 flow rate. Constructed supercritical drying process has been improved drying efficiency, and it conserves carbon dioxide for drying. The exponential decrease of the alcogel weight during drying process permits us to decide that the minimum CO2 weight is 70 times higher than the initial weight of the alcogel. Adjusting water content on the aerogel provide a crack-free aerogel when water content is greater than 3.6 as mole ratio. The mole fraction of water dominates the degree of polymerization of aerogel. Therefore, well-structured alcogel prepared by optimum water concentration. Titania aerogel was shown high-specific surface area but, photocatalytic activity needs to be improved.
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Taira KUDO, Yoshika SEKI, Koivisto Teemu, Moeko KASHIWAZAKI, Riho OKUB ...
2017Volume 51 Pages
117-121
Published: 2017
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Yeast strains are used in various types of fermented food. In recent years, the isolation of natural yeast strains that are suitable for making fermented food has been performed for the development of new products throughout Japan. Recently, we isolated several kinds of natural yeast from cherry blossom, camellia blossom and other plant materials. In this study, we attempted to isolate natural yeast strains, that are useful for making fermented food including alcoholic drinks and bread, from the northernmost natural habitat of camellia in Japan, TSUBAKIYAMA. TSUBAKIYAMA is designed as a special natural treasure in Japan. We collected camellia blossom, leaf, bark and soil, and demonstrated the isolation of natural yeast using Koji-medium.
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Momoko EKARI, Yoshihiro KADOMA, Tetsuo HONMA, Akira HASEGAWA
2017Volume 51 Pages
123-128
Published: 2017
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TiO2 anchored silica fibers(TAS) were prepared by chemical vapor deposition using titanium tetraisopropoxide and 1,3-butanediol. Titanium alkoxy-diolate was generated on silica fibers by the reaction of gaseous titanium tetraisopropoxide with silica surface-modified with 1.3-butandiol, which was deposited on silica filter prior to the exposure of titanium tetraisopropoxide. When the photo-decomposition of gaseous acetaldehyde was carried out under UV light illumination, the acetaldehyde photo-decomposition rate of TiO2 in TAS showed 1.4 times as high as the same amounts of P-25 and JRC-TIO-4. It is considered that the cause of high photocatalytic activity of TAS is thinning the titanium oxide and migration of Si from silica fiber.
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Takahiro FUKUMATSU, Azuma HIRAI, Kengo NONAKA, Miya FUJIMOTO, Takayuki ...
2017Volume 51 Pages
129-132
Published: 2017
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Optical property of polymer alloys comprising regioregular-poly(3-hexylthiophene-2,5-diyil) (rr-P3HT) and an insulating matrix of poly(butyl methacrylate) (PBMA), polyvinyl acetate (PVAc), or polyvinylpyrrolidone (PVP) was evaluated. In PBMA + rr-P3HT mixed films, crystallization of rr-P3HT was decreased with increase of PBMA ratio, which showed that PBMA acted as ‘good solvent’ for rr-P3HT in polymer alloy. Moreover, rr-P3HT + polystyrene (PS) mixed films were stretched at 140℃ and optical property of stretched films was evaluated. By stretching these films, rr-P3HT in polymer alloy was sufficiently aligned along stretched direction.
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Hisao SUGITA, Yoshie TAZAWA, Mei MIURA, Shunichi KATAOKA
2017Volume 51 Pages
133-138
Published: 2017
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Japan has had a long history of earthquakes and seismic activities. It is an area of high seismicity because of its location near three major tectonic plate boundaries, and is situated on the Pacific Ring of Fire. 20% of the most dangerous earthquakes of the World occurred there. The 11 March 2011 at 5:46 pm a big earthquake occurred with an 8.9 magnitude. It was the biggest earthquake recorded since 1923. In April 2016, a big Earthquake occurred also. My project is to study all the point of impact of the earthquake and its aftershocks. Earthquake of magnitude 6.2 occurred on April 14.Furthermore earthquake of magnitude 7.0 occurred in the two days after. It was a very rare case that the main shock occurs after the foreshock. In this study, We have studied about the direction of earthquake motions.
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Yukoh KIYOHARA, Tomomi SAKAMOTO
2017Volume 51 Pages
139-144
Published: 2017
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Soil-water coupled finite element analysis code 'CAMBIOT3D' was used to predict consolidation behavior around residential land. Analytical one-dimensional consolidation behavior was agreed well with theoretical one. Deformation and pore water pressure around cut land, filled land and cut and filled land could be calculated respectively well. Differential settlement had occurred more seriously on the boundary of cut and filled area than cut-only or filled-only one.
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Megumi ABE, Tohru OHTA
2017Volume 51 Pages
145-148
Published: 2017
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National Institute of Technology, Hachinohe College (hereinafter referred to as Hachinohe Kosen) has been selected as a “Global Kosen” from among nine Kosen in Tohoku (except Fukushima) and Hokkaido District. The purpose of the Global Kosen is to explore global engineering development programs and to improve the cross cultural understanding as well as the English communication proficiency of students. In addition, faculty as well as staff members are required to understand competencies for global engineers and have skills to train and educate global engineers. In this article, the aims and approaches of Hachinohe Kosen’s Global Project are described.
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Akio Kikuchi
2017Volume 51 Pages
149-150
Published: 2017
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Takashi SUGAWARA
2017Volume 51 Pages
151-154
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2017Volume 51 Pages
155-
Published: 2017
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