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A Novel Estimating Method for Steering Efficiency of the Driver with Electromyography Signals

Chinese Journal of Mechanical Engineering 2014年第3期27卷 460-467页

作者： LIU Yahui JI Xuewu hayama ryouhei MIZUNO Takahiro State Key Laboratory of Automotive Safety and Energy Tsinghua University Research and Development Center jtekt co.ltd.

The existing research of steering efficiency mainly focuses on the mechanism efficiency of steering system, aiming at designing and optimizing the mechanism of steering system. In the development of assist steering system especially the evaluation of its comfort, the steering efficiency of driver physiological output usually are not considered, because this physiological output is difficult to measure or to estimate, and the objective evaluation of steering comfort therefore cannot be conducted with movement efficiency perspective. In order to take a further step to the objective evaluation of steering comfort, an estimating method for the steering efficiency of the driver was developed based on the research of the relationship between the steering force and muscle activity. First, the steering forces in the steering wheel plane and the electromyography （EMG） signals of the primary muscles were measured. These primary muscles are the muscles in shoulder and upper ann which mainly produced the steering torque, and their functions in steering maneuver were identified previously. Next, based on the multiple regressions of the steering force and EMG signals, both the effective steering force and the total force capacity of driver in steering maneuver were calculated. Finally, the steering efficiency of driver was estimated by means of the estimated effective force and the total force capacity, which represented the information of driver physiological output of the primary muscles. This research develops a novel estimating method for driver steering efficiency of driver physiological output, including the estimation of both steering force and the force capacity of primary muscles with EMG signals, and will benefit to evaluate the steering comfort with an objective perspective.

关键词： electromyography muscle activity steering efficiency estimating

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Function of shoulder muscles of driver in vehicle steering maneuver

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Science China(Technological Sciences) 2012年第12期55卷 3445-3454页

作者： LIU YaHui JI XueWu ryouhei hayama TAKAHIRO Mizuno LOU LiMing State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Research and Development Center JTEKT Co.Ltd.Nara 634-8555Japan

In order to study the function of muscles of driver shoulder during vehicle steering, identification of relations between electromyograph (EMG) activity of 10 shoulder muscles and steering force was performed. The procedure was to perform controlled steering maneuver by right hand in a driving simulator, and based on analyzing the EMG data with steering force in the steering wheel plane, the function was identified. It was found that muscle function depends strongly on both steering rotation and steering torque directions. In clockwise steering, the long head of triceps brachii was the prime mover and an important contributor to clockwise moment, while the sternocostal portion of the pectoralis major, the lateral head of triceps brachii, biceps brachii and teres major were the important stabilizers or fixators. In contrast, in counterclockwise steering, the anterior, middle and posterior deltoid, the clavicular portion of the pectoralis major and infraspinatus were the prime movers and also the important contributors to counterclockwise moment, while the sternocostal portion of the pectoralis major, the lateral head of triceps brachii, biceps brachii and teres major were the important stabilizers or fixators. We conclude that the prime movers are primarily a consequence of steering direction, while the stabilizers or fixators are primarily constant. These results can be used to improve the neuromuscular model and estimate the steering comfort of driver.

关键词： electromyograph muscle function steering maneuver

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Preliminary Research on Muscle Activity in Driver’s Steering Maneuver for Driver’s Assistance System Evaluation

Preliminary Research on Muscle Activity in Driver’s Steerin...

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The FISITA 2012 World Automotive Congress--Volume 7:Vehicle Design and Testing(Ⅰ)

作者： ryouhei hayama Yahui Liu Xuewu Ji Takahiro Mizuno Tomoyasu Kada Liming Lou R&D Departmant R&D CenterJTEKT CorporationAichiJapan State Key Laboratory of Automotive Safety and Energy Tsinghua University R&D Departmant R&D Center.JTEKT CorporationAichiJapan

The quantification of the driver’s workload to complement the subjective evaluation is required in order to evaluate the driver assistant *** investigation results of muscle behavior during steering maneuver have been *** role and the feature of muscle activities in simulated steering conditions have been *** tends to maneuver with "push steering" in both clockwise direction and counter-clockwise *** alternation and co-contraction between the two muscles corresponding to the opposite one could be seen at the change of the torque *** to the result,the driver’s steering workload might be estimated by evaluating the simultaneous activities of pectoralis clavicular and anterior deltoid of the both *** result of this research can be considered to be useful for the evolution of driver assistant ***,it would contribute to spread the system and improve its *** might contribute to reduce traffic accidents as well.

关键词： Steering Maneuver Muscle activity EMG Driver assistance

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Titanium Culture Vessel Presenting Temperature Gradation for the Thermotolerance Estimation of Cells

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Cyborg and Bionic Systems 2023年第1期4卷 166-177页

作者： Chikahiro Imashiro Yangyan Jin Motoaki hayama Takahiro GYamada Akira Funahashi Katsuhisa Sakaguchi Shinjiro Umezu Jun Komotori Graduate School of Engineering The University of TokyoTokyo 113-0033Japan Department of Mechanical Engineering Keio UniversityYokohamaKanagawa 223-0061Japan School of Integrated Design Engineering Graduate School of Science and TechnologyKeio UniversityYokohamaKanagawa 223-0061Japan Department of Biosciences and Informatics Keio UniversityYokohamaKanagawa 223-0061Japan Department of Integrative Bioscience and Biomedical Engineering Graduate School of Advanced Science and EngineeringWaseda UniversityTWInsTokyo 162-8480Japan Department of Modern Mechanical Engineering Waseda UniversityTokyo 169-8555Japan

Hyperthermia can be induced to exploit the thermal intolerance of cancer cells,which is worse than that of normal cells,as a potential noninvasive cancer *** develop an effective hyperthermia treatment,thermal cytotoxicity of cells should be comprehensively ***,to conduct such investigations,the culture temperature must be accurately *** previously reported a culture system in which the culture temperature could be accurately regulated by employing metallic culture ***,appropriate temperature conditions for hyperthermia depend on the cell ***,several experiments need to be conducted,which is a bottleneck of inducing ***,we developed a cell culture system with temperature gradation on a metallic culture *** Cancer Foundation-7 cells and normal human dermal fibroblasts were used as cancer and normal cell models,*** cells showed stronger thermal tolerance;this was because the novel system immediately exhibited a temperature ***,the developed culture system can be used to investigate the optimum thermal conditions for effective hyperthermia ***,as the reactions of cultured cells can be effectively assessed with the present results,further research involving the thermal stimulation of cells is possible.

关键词： stimulation culture Titanium

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日本现行初级汉语教材练习题型统计分析与研究

日本现行初级汉语教材练习题型统计分析与研究

引用

作者： hayama Kikue 浙江科技学院

学位级别：硕士

在日本有相当多的汉语学习者,汉语教材种类与数量也不少,但对日本汉语教材的研究依然匮乏,特别是对日本汉语教材练习的研究,数量与内容两方面都有较大的空白。因此,本文对日本现行的初级汉语教材练习进行统计与分析,并借鉴以往研究成果... 详细信息

在日本有相当多的汉语学习者,汉语教材种类与数量也不少,但对日本汉语教材的研究依然匮乏,特别是对日本汉语教材练习的研究,数量与内容两方面都有较大的空白。因此,本文对日本现行的初级汉语教材练习进行统计与分析,并借鉴以往研究成果从学习者、教师和有效性三个角度进行考察。首先,论文通过统计、分析与考察整理出如下日本初级汉语教材练习的特征。(1)统计数据显示以下特征:认读、日汉翻译题与词汇排序成句三种题型是日本初级汉语教材中最常见的练习形式;在模仿记忆型练习/理解运用型练习/交际型练习的三种中前两种练习占绝大部分,日本初级汉语教材练习在输入到输出的环节中更重视前者;使用最多的技能是“写”,学习策略是认知策略,但不同教材之间存在具体比例的不同。(2)日本初级汉语教材练习符合一部分日本学习者的特征,即日本初级汉语教材的练习符合日本学习者认知方式特征,但不符合日本学习者学习策略与学习动机上的特征。(3)日本初级汉语教材练习给教师带来帮助与困难。(4)练习效果有限,日本初级汉语教材的练习在内容与形式上有一些效果,但其程度很有限并且不同教材的有效程度有所不同。数量的有效性从日本大学的汉语作为第二外语的课堂使用来看不是很理想。上述结论有助于教材使用者更好地了解日本初级汉语教材及其练习题型,也提供使用上的帮助。其次,基于对日本初级汉语教材练习题型的统计、分析与考察,本文提出如下建议。第一,为了能更好地兼顾本土化教材与对外汉语教材的要求,日本初级汉语教材编写者需关注练习的开发与创新。第二,教材的说明及使用建议应更具体、清晰,以便于使用者理解和使用。第三,为了取得更好的教学成果,教师应该更加注意教材练习的目的。第四,教师应该了解日本汉语教材的特征和中国出版的对外汉语教材的特征,同时也要关注教材使用者的使用情况和他们的建议。作者希望以上建议有助于提高日本初级汉语教材练习的质量,为提高日本汉语教学水平做出应有的贡献。

关键词：日本初级汉语教材练习题型日本汉语教学日本学习者日本汉语教师练习有效性

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Outcomes of the study of intracytoplasmic sperm injection(ICSI)and sperm motility with microdissection testicular sperm extraction

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Asian Journal of Andrology 2022年第2期24卷 221-222页

作者： Yuuka Arai Hiroe Ueno Mizuki Yamamoto Haruna Izumi Kazumi Takeshima Tomonari hayama Hideya Sakakibara Yasushi Yumura Etsuko Miyagi Mariko Murase Reproductive Medical Center Yokohama City University Medical CenterYokohama-shi 232-0024Japan Department of Gynecology Yokohama City University Medical CenterYokohama-shi 232-0024Japan Department of Obstetrics and Gynecology Yokohama City University School of MedicineYokohama-shi 236-0004Japan

Dear Editor,Microdissection testicular sperm extraction(micro-TESE)is an optimal sperm extraction method for men with nonobstructive azoospermia(NOA).1 According to a recent systematic review by Corona et al.,2 the sperm retrieval rate by micro-TESE and live birth rate per intracytoplasmic sperm injection(ICSI)cycle among NOA patients were 46%and 24%,*** cases where sperm can be collected from NOA patients,the live birth rate remains *** the potential outcomes of ICSI can be predicted by sperm motility assessment,such as pregnancy not anticipated because of immotile sperm,unnecessary ovarian stimulation or oocyte retrieval from female partners could be avoided.

关键词： motility injection stimulation

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普旋过程中旋轮道次的制定对产品的影响

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锻压技术 1989年第5期14卷 45-51页

作者： Masu jiro hayama 王强横滨国立大学

本文讨论了为获得最小产品高度而对轨迹形状及其它工作条件对数学参数进行选择的方法,提出了获得一定产品高度的合理方程,并指出了选择最优的旋轮进给速度和道次间距的方法。根据文中描述的规律,可容易地获得所希望的筒形零件高度,本文... 详细信息

本文讨论了为获得最小产品高度而对轨迹形状及其它工作条件对数学参数进行选择的方法,提出了获得一定产品高度的合理方程,并指出了选择最优的旋轮进给速度和道次间距的方法。根据文中描述的规律,可容易地获得所希望的筒形零件高度,本文中的计算机模拟程序可望应用于复杂形状的零件。

关键词：普旋旋轮道次旋压件制定

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Analysis of Cooling Characteristics in Datacenter Using Outdoor Air Cooling

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Journal of Energy and Power Engineering 2015年第1期9卷 16-24页

作者： Yoshiyuki Inoue Hirofumi hayama Taro Mori Koki Kikuta Noriyuki Toyohara Graduate School of Engineering Hokkaido University Sapporo 060-8628 Japan Faculty of Engineering Hokkaido University Sapporo 060-8628 Japan Department of Facilities Design Taisei Corporation Tokyo 163-0606 Japan

Advancement of the information society has proceeded with the development of information and communication technology, and a demand on a data center has increased. In such a situation, the number of servers is increasing in a data center. Thus, the heat density in a data center is much higher than that of usual offices. And typically, almost 40% of the total power consumption is used for cooling servers in a data center. Thus, cooling effectiveness is one of the most important factors in evaluating the value of the data center. The data center taken up in this paper is located in Ishikari, where is a cold district in Japan. Using the cool outdoor air for cooling servers helps us to cut the power consumption for cooling. This paper first assesses the efficiency of Ishikari data center measuring the temperature of seven parts in a building where the cooling air flowing. Second, this paper describes the most efficient method for the operation and estimates 1.11 of PUE （power usage effectiveness）.

关键词： Data center cooling characteristics outdoor air cooling PUE.

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摆辗工艺变形机理的分析研究

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锻压技术 1989年第5期14卷 24-29页

作者： Hongxing Su Kenichi Kawai Masujiro hayama 张士宏

本文对圆柱件和圆盘件的摆辗变形机理进行了实验研究和理论分析。通过压力传感销对接触压力的三维分布进行了测定。上摆头与工件间的接触面形状也用压力传感销进行了测定。本文还提出了摆辗三维变形的分析步骤。弄清了摆辗工艺中的金属... 详细信息

本文对圆柱件和圆盘件的摆辗变形机理进行了实验研究和理论分析。通过压力传感销对接触压力的三维分布进行了测定。上摆头与工件间的接触面形状也用压力传感销进行了测定。本文还提出了摆辗三维变形的分析步骤。弄清了摆辗工艺中的金属流动。在实验观察的基础上还提出了估算摆辗工艺中接触面形状的经验公式。

关键词：摆辗变形机理锻造轴对称零件

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Ganglioneuroblastoma arising within a retroperitoneal mature cystic teratoma

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World Journal of Clinical Oncology 2012年第12期3卷 155-158页

作者： Satoshi hayama Makoto Ohmi Atsuya Yonemori Takumi Yamabuki Hitoshi Inomata Kazuyoshi Nihei Satoshi Hirano Department of Surgery Kushiro Red Cross Hospital Department of Surgical Oncology Hokkaido University Graduate School of Medicine

We discuss an extremely rare case of ganglioneuroblastoma arising within a retroperitoneal mature cystic teratoma. Radiological examinations showed a cystic tumor sandwiched between the pancreas and left kidney. Surgery was scheduled because the tumor seemed to have originated from the pancreas. En-block resection of the tumor with distal pancreatectomy, splenectomy, and left adrenalectomy was performed. In terms of macroscopic appearance, the tumor mainly consisted of a unilocular cystic mass, but the presence of a smaller, solid mass was also noted within the tumor. Histopathologic examination confirmed that the cystic mass was consistent with a mature cystic teratoma of the retroperitoneum, and in addition, a ganglioneuroblastoma was evident in the solid component. Histopathologically, the ganglioneuroblastomatous area was intimately associated with dermoid tissue of the mature cystic teratoma, thus this case was diagnosedto be a mature cystic teratoma with malignant transformation. To best of our knowledge, this is the first reported case of ganglioneuroblastoma arising in a mature cystic teratoma.

关键词： Ganglioneuroblastoma Malignant transformation Mature cystic teratoma Retroperitoneum Surgical treatment

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