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几何尺寸组织定量分析法测量动脉壁静态工作应变

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中国生物医学工程学报 2002年第6期21卷 511-514页

作者：李晓阳曾衍钧 k.hayashi 北京工业大学机电学院北京100022 北京工业大学生物医学工程中心北京100022 Department of Mechanical Engineering

本文利用生物组织固定技术 ,发展了一种直接测量动脉壁内应变分布的方法 :组织定量应变分析法。并用该方法测量了白兔颈动脉壁在 5 0mmHg、10 0mmHg、15 0mmHg、2 0 0mmHg模拟生理载荷状态下的应变分布。将测量结果与应用张开角应变分... 详细信息

本文利用生物组织固定技术 ,发展了一种直接测量动脉壁内应变分布的方法 :组织定量应变分析法。并用该方法测量了白兔颈动脉壁在 5 0mmHg、10 0mmHg、15 0mmHg、2 0 0mmHg模拟生理载荷状态下的应变分布。将测量结果与应用张开角应变分析法得到的理论应变分布进行了比较。结果表明 :用组织定量应变分析法直接测量的环向应变分布与由理论分析得到的环向应变分布较为一致。这表明组织定量应变分析法是一个可行的直接测量动脉壁内应变的方法。同时 ,本文通过白兔颈动脉环向应变测量结果证明了均匀应变状态的存在。

关键词：组织定量应变分析法张开角应变分析法均匀应变假设生物力学几何尺寸组织定量分析法动脉壁静态工作应变

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固定式管板换热器的一个分析方法

化工设备与管道 1980年第4期 42-50页

作者： k.hayashi 榕生

本文所述固定式管板换热器的分析方法是利用一个轴对称壳体分析的计算机规程或有限元分析的计算机规程来进行的,其管束被模拟为一当量的弹性基础。只有仔细地确定了边界条件之后,在本文中所述的方法采用计算机规程才有可能。方法可以扩... 详细信息

本文所述固定式管板换热器的分析方法是利用一个轴对称壳体分析的计算机规程或有限元分析的计算机规程来进行的,其管束被模拟为一当量的弹性基础。只有仔细地确定了边界条件之后,在本文中所述的方法采用计算机规程才有可能。方法可以扩大用于带转角,法兰等的壳体。附有数值例题以帮助设计工程师应用此方法。

关键词：管板换热器热交换器特纳法固定式分析方法

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心室辅助装置研究在日本

国际生物医学工程杂志 1987年第2期 93-97页

作者： k.hayashi 王惠荪

在日本,心室辅助装置于1980年在 Mi—tsui Memorial 医院(东京)首次应用于临床后,引起了医学工作者和生物医学工程师的关注。此后,进行了深入的心室辅助装置的基础研究和应用研究,包括血泵及其材料的设计和评价,控制驱动系统、新的可永... 详细信息

在日本,心室辅助装置于1980年在 Mi—tsui Memorial 医院(东京)首次应用于临床后,引起了医学工作者和生物医学工程师的关注。此后,进行了深入的心室辅助装置的基础研究和应用研究,包括血泵及其材料的设计和评价,控制驱动系统、新的可永久植入驱动器的研制,外科手术和术后护理的改进,以及血液动力学和心脏力学的研究等。在这些研究的基础上,从1980年以来,已有十余例心室辅助装置应用于临床。

关键词：心室辅助血泵人工心装置人工心脏人工器官日本

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在服装工业中应用图论白动排料计划

国外纺织技术 1990年第15期 41-43+11页

作者： M.Nakajima k.hayashi 汤秋萍

1.引言服装工业进行衣片排料的过程是使各种衣片适合布料,减少浪费。这个过程称为“衣片排料”,通常是由经验丰富的排料工人进行的。最近,此工作可用计算机自动完成,以节省劳动量和工作时间。计算机算法辅助排料操作已由日本服装工业研... 详细信息

1.引言服装工业进行衣片排料的过程是使各种衣片适合布料,减少浪费。这个过程称为“衣片排料”,通常是由经验丰富的排料工人进行的。最近,此工作可用计算机自动完成,以节省劳动量和工作时间。计算机算法辅助排料操作已由日本服装工业研制,但过程并不是完全自动化的,仍有待于进一步的改进。Tanaka和Wachi提出衣片排料的计算机算法。Tanaka和Wachi论文的主要贡献是讨论了用数学归纳法解决组合布局的问题。但他们并没有保证衣片布局的最优解答。本文的目的是对Tanaka和Wachi的算法进行改进。用图论技术对输入数据减少浪费,用这个算法进入实际排料,并比较此方法和Tanaka和Wachi算法的浪费量。

关键词：衣片计算机算法布料排料服装

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在服装工业中应用图论白动排料计划

国外纺织技术（针织．服装分册） 1990年第3期 41-43,11页

作者： M.Nakajima k.hayashi 汤秋萍

关键词：服装设计衣片排料图论自动排料

Modeling the Contemporary Stress Field and Deformation Pattern of Eastern Mediterranean

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Journal of Earth Science 2010年第4期21卷 365-381页

作者： S k Dwivedi D hayashi Simulation Tectonics Laboratory Faculty of ScienceUniversity of the Ryukyus

The contemporary stress field in the earth＇s crust is important and provides insights into mechanisms that drive plate motions. In this study, elastic plane stress finite element modeling incorporating realistic rock parameters was used to calculate the stress field, displacement field, and defor- mation of the plate interactions in the eastern Mediterranean. Modeled stress data for the African- Arabian-Anatolian plate interactions with fixed European platform correlate well with observed contemporary stress indicator from the world stress map （WSM） and focal mechanism of earthquakes; while displacement field agrees qualitatively well with GPS vectors and sense of motion indicated by focal mechanisms for large crustal earthquakes （Ms〉6） and plate motion models. Modeling result shows the direction of maximum horizontal compressive stress （σHmax） toward the direction of absolute motion of these plates. Large perturbations in σHmax orientations are shown to occur in and around tectonic boundaries between those plates. It is observed that, although the African plate acts mostly as indenter, which transmits the collisional motion from the Arabian plate to the Anatolian plate, in the current situation, the far-field stress, probably from the subduction in Aegean Arc, is needed to satisfy the contemporary stress field in Anatolia.

关键词： finite element model maximum horizontal stress seismieity crustal deformation Anatolia eastern Mediterranean.

Coupled simulation of BES-CFD and performance assessment of energy recovery ventilation system for office model

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Journal of Central South University 2012年第3期19卷 633-638页

作者： Yunqing FAN T.hayashi k.Ito Interdisciplinary Graduate School of Engineering Science(IGSES) Kyushu University

Thermal comfort and indoor air quality as well as the energy efficiency have been recognized as essential parts of sustainable building assessment. This work aims to analyze the energy conservation of the heat recovery ventilator and to investigate the effect of the air supply arrangement. Three types of mixing ventilation are chosen for the analysis of coupling ANSYS/FLUENT （a computational fluid dynamics （CFD） program） with TRNSYS （a building energy simulation （BES） software）. The adoption of mutual complementary boundary conditions for CFD and BES provides more accurate and complete information of indoor air distribution and thermal performance in buildings. A typical office-space situated in a middle storey is chosen for the analysis. The office-space is equipped with air-conditioners on the ceiling. A heat recovery ventilation system directly supplies flesh air to the office space. Its thermal performance and indoor air distribution predicted by the coupled method are compared under three types of ventilation system. When the supply and return openings for ventilation are arranged on the ceiling, there is no critical difference between the predictions of the coupled method and BES on the energy consumption of HVAC because PID control is adopted for the supply air temperature of the occupied zone. On the other hand, approximately 21% discrepancy for the heat recovery estimation in the maximum between the simulated results of coupled method and BES-only can be obviously found in the floor air supply ventilation case. The discrepancy emphasizes the necessity of coupling CFD with BES when vertical air temperature gradient exists. Our future target is to estimate the optimum design of heat recovery ventilation system to control CO2 concentration by adjusting flow rate of flesh air.

关键词： building energy simulation computational fluid dynamics (CFD) FLUENT TRNSYS energy saving

Psychological potential field and human eye fixation on binary line-drawing images: A comparative experimental study

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Computational Visual Media 2020年第2期6卷 205-214页

作者： Naoyuki Awano Yuki hayashi Osaka University of Economics OsakaOsaka533-8533Japan Osaka Prefecture University SakaiOsaka599-8531Japan

Quantitatively evaluating the psychological and perceptual effects of objects is an important issue,but is difficult. In cognitive studies, the psychological potential field(PPF), which represents psychological intensities in vision and can be calculated by applying computational algorithms to digital images, may help with this issue. Although studies have reported using the PPF to evaluate psychological effects, such as impressions, detailed investigations on how the PPF represents psychological perception and its limitations have not yet been performed. Another relevant tool is the fixation map, which visualizes human eye fixations;this map is generated from actual measurements acquired by eye-tracking and does not represent psychological effects directly. Although the PPF and the fixation map are based on visual imaging, they have never been compared. In this paper, we do so for the first time, using psychological and perceptual properties of line-drawing images. The results demonstrate the difference between these methods, including their representation of different properties with respect to visual perception. Moreover, the similarity between the two methods highlights the possibility of assessing perceptual phenomena such as categorization and cognition of objects based on human vision.

关键词： psychological potential field(PPF) eye fixation eye-tracking visual perception line drawing

Finite Abelian Groups of k3 Surfaces with Smooth Quotient

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Chinese Annals of Mathematics,Series B 2023年第1期44卷 99-162页

作者： Taro hayashi Faculty of Agriculture Kindai UniversityNakamaticho 3327-204NaraNara 631-8505Japan

The quotient space of a k3 surface by a finite group is an Enriques surface or a rational surface if it is *** groups where the quotient space are Enriques surfaces are *** this paper,by analyzing effective divisors on smooth rational surfaces,the author will study finite groups which act faithfully on k3 surfaces such that the quotient space are *** particular,he will completely determine effective divisors on Hirzebruch surfaces such that there is a finite Abelian cover from a k3 surface to a Hirzebrunch surface such that the branch divisor is that effective ***,he will decide the Galois group and give the way to construct that Abelian cover from an effective divisor on a Hirzebruch ***,he studies the same theme for Enriques surfaces.

关键词： k3 surface Finite Abelian group Abelian cover of a smooth rational surface