前橋工科大学研究紀要
Online ISSN : 2433-5673
Print ISSN : 1343-8867
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選択された号の論文の14件中1~14を表示しています
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  • 20 巻 (2017) p. Cover1-
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
  • 田中 恒夫 , 菅原 思織 , 小林 享
    20 巻 (2017) p. 1-4
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    The stimuli-response of the radiation cross-linked hydroxypropylcellulose (HPC) gel was investigated. Temperature, pH and electric current (electric field) were changed in the experiments. The volume of the HPC gel was decreased as the water temperature rose from 20℃ to 50℃. On the other hand, the gel volume was increased with the decrement of the water temperature. The HPC gel volume grew large slightly at the high pH above 11. The volume phase transition of the HPC gel with the current change was not recognized in this experiment.
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  • 三田村 輝章 , 石川 恒夫 , 柳下 雄介 , 大井 明弘
    20 巻 (2017) p. 9-13
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    The aim of this study is to make clear the environmental performance of the developed wall construction which is installed the insulation material on the exterior side of the mud wall. Filed measurement for hygrothemal environment in the test house was carried out. The test house consists of two rooms i.e. furnished with a mud wall and vinyl wallpaper. This paper describes the measurement result of indoor temperature and humidity for two years. Though the differences for daily mean temperature for two years between the mud wall and vinyl wallpaper was small, the differences for daily mean relative humidity was about 5-10%RH. According to measurement results in summer and winter, a peak and range of fluctuation for temperature and humidity were different in both room. Heat storage and moisture buffering effect of the mud wall with the insulation method were discussed. For future works, this measured data will be used for verification of numerical simulation. An optimization for the design as thickness of the mud wall and insulation etc. will be conducted.
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  • 井田 憲一
    20 巻 (2017) p. 15-18
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    In the actual production site, a plurality of worker who operates the machine exists, depending on the skill level by the workers for each machine, working time is different even if the same work on the same machine. Therefore, it is proposed to account for differences in working time by the worker is Scheduling Problem with Worker Allocation (SPWA). In this paper, in order to approach the more realistic model by dividing into several class workers, to determine the skill level for each machine for each class workers, we propose a new model that introduced the concept of class-type skill, demonstrate the effectiveness the computational result by GA algorithm.
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  • 野村 保友 , 神田 真理子 , 清 文美 , 松尾 篤史
    20 巻 (2017) p. 19-22
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    Plethysmographic signals were detected remotely (0.5 m) under the standard room light by the use of a built-in webcam on note PC. The RGB color movies were recorded at video-rate and the region of interest was set to the forehead of each subject. Changes in the average intensity of G channel appeared to be consistent with pulsation, respiration and the body movement. When the time series data was subjected to Fourier analysis, we found the characteristic peaks corresponding to the frequency of heart rate and respiration in the spectra. As for the B channel, we observed the respiration signal but the very weak signal of pulsation. Neither were almost contained in the R channel. In subjects that kept running for 3 minutes, the exercise increased the frequency of the plethysmographic signal measured remotely, suggesting the sympathetic nerve activation. This was confirmed by the increase in the LF/HF ratio of electrocardiogram and the salivary amylase activity. Furthermore, the exercise increased pulsation as well as respiration measured remotely. The remote vital monitor would be one of the evaluation methods of sympathetic nerve activity and be especially useful for the person who has difficulty wearing the sensor for sympathetic nerve activity.
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  • 松山 香織 , 小田垣 雅人 , 菊地 豊
    20 巻 (2017) p. 23-24
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    Transcranial magnetic stimulation (TMS) is a noninvasive stimulation method for human cortical neuron. It has several clinical uses such as in the assessment of corticospinal excitability and treatment of depression. The operator of a TMS device must allocate the stimulation coil on the target considering its purpose. In this study, we developed the whole-head type visualization system of stimulating cortical area in TMS.
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  • 尾形 智夫 , 齊藤 和仁 , 中村 建介
    20 巻 (2017) p. 25-27
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    Maltose fermentation activator protein, MAL63 homologue, MAL63 (NCYC1006), was cloned from S. cerevisiae NCYC1006. This yeast strain is top-fermenting yeast, and ferments maltose very well. Laboratory yeast S. cerevisiae YNN27 ferments maltose very poorly, however, the transformant with MAL63 (NCYC1006) could ferment maltose very well. Genome sequencing by a next generation sequencer revealed the chromosomal location of MAL63 (NCYC1006). These typical chromosomal structures are conserved among top-fermenting yeast strains and bottom-fermenting yeast strain.
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  • 大石 絢菜 , 髙𣘺 計史 , 本間 知夫
    20 巻 (2017) p. 29-32
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    In order to develop a new utilization method of mulberry leaf powder (MLP), this study tried to combine MLP with cocoa drink and measured antioxidant activity (AA) of combined sample solution expecting a synergistic effect. Contrary to expectation, AA of combined solutions was decreased with increasing in combined quantities of MLP by comparing with AA of each sample solution of MLP and cocoa drink. Reason of this result and effects of combination of MLP with cocoa drink on other functionalities are not yet known, so we cannot yet conclude whether this combination was not good.
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  • Mikio Iguchi
    20 巻 (2017) p. 33-40
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    第二言語習得における学習動機(L2 motivation)の理論的フレームワークを支えている社会心理学の研究方法を考察した。第二言語習得における学習動機の研究は1960年代からGardner等によって提唱されている統合的動機(integrative motivation)と道具的動機(instrumental motivation)の研究が中心である。この研究方法は社会心理学に裏打ちされており、後続の研究に至るまで脈々と受け継がれている。社会心理学は実証主義のパラダイムに根ざしており、研究成果は量的データで発表されている。一方、構成主義のパラダイムに立脚し、質的データで第二言語習得における学習動機を研究する流れも形成されてきている。本研究は質的研究による第二言語習得における学習動機を研究することの重要性と可能性を提唱した。
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  • Mikio Iguchi
    20 巻 (2017) p. 41-52
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    第二言語習得における学習動機(L2 motivation)は主として調査票を用いた量的研究により発展してきた。一方でインタビューを用いた質的研究も第二言語習得における学習動機を研究する上で徐々に用いられるようになってきた。調査票は量的研究方法論に基づいている。一方で、インタビューも質的研究方法論に基づいており、計画・実施・分析にあたっては研究方法論に即した厳密性が求められる。本稿では実際に実施したパイロット・インタビューとそのデータの分析をもとにインタビューの特徴を省察的に考察・網羅し、今後の第二言語習得における学習動機を研究する上でインタビューが果たし得る役割について論じた。
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  • 菅原 一晴
    20 巻 (2017) p. 53-57
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    We proposed experiments using vial containers to observe a solid - liquid reaction and an oxidation-reduction reaction. Because the vial container of various volumes was commercially available, these experiments were performed in the container of 20 ml. The first content was that change of color of methylene blue was observed in lemon tea and vegetable juice. When the sample and methylene blue were mixed in an alkali solution, the color of the solution with the tea was changed from orange to blackish brown. The change of the color in the solution was repeated 10 times in 10 s at least. Next, the experiment that sodium acetate trihydrate was supersaturated was carried out in vial container. Since the vial container with cap was convenient to the operation of heating-cooling, the repetitive task was rapidly achieved. Therefore, this system was suitable for observation of the solution crystallization. The merits of the containers were a low cost and easily handled. Consequently, the vial containers could be applied for the chemical experiments.
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  • 吉岡 将孝
    20 巻 (2017) p. 61-62
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
    Brain-machine interfaces (BMIs) are technologies that allow humans to interact with artificial devices. To support daily life by BMIs, it is necessary to reconstruct the motion information by measured EEGs signals. Our purpose is to estimate the force/torque information from the brain activity to help and support the human's daily life. In this study, we analyze the electroencephalogram(EEG) signals in movement to extract the relationship between EEG and muscle activity signals, and further estimate the joint torque from the EEG. In order to extract the relationship between EEGs and elbow joint torque when a subject controls the robot arm, the features of the EEGs related to motion are extracted by twice short-time Fourier transform. As the result of the analysis, periodicity of alpha and beta wave variation at each measurement point has a strong association with subject's movement. Based on this, we model the relationship between EEG and muscle activity by principal component analysis, and the results show that it is possible to estimate muscle activity from EEG.
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  • 20 巻 (2017) p. App1-
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
  • 20 巻 (2017) p. Cover2-
    公開日: 2018/03/14
    研究報告書・技術報告書 オープンアクセス
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