搜索结果: 1-15 共查到“Stewart”相关记录43条 . 查询时间(0.063 秒)
2018年6月21日至7月5日，受北京航空航天大学机械工程及自动化学院邀请，在我校聘请短期外国专家项目资助下，英国克兰菲尔德大学焊接工程与激光加工中心主任Stewart Williams教授及Jialuo Ding研究员一行访问机械学院，与我校焊接与电弧增材研究团队围绕“大尺寸高性能航空金属构件增减材制造关键技术”进行了广泛而深入的技术交流，重点针对电弧熔丝增材制造过程中电弧热源精确调控、熔丝增材...
为了满足工业机器人用6维力传感器高精度、高刚度、大承载的性能要求，提出了一种局部去耦的设计方法，对重载Stewart 6维力传感器进行兼顾精度与刚度的综合优化.首先，通过结构参数优化，获取最优参数；其次，结合球铰去耦样机和无去耦措施样机的实验数据，分析得出耦合因素对传感器各支路输出特性的影响；再次，对传感器进行局部去耦设计，并通过有限元仿真加以验证.最后，样机实验结果显示相较于传统结构Stewar...
2017年7月17日，受国家外专局资助，应中国科学院西北高原生物研究所藏药新药研发学科组、中国科学院藏药研究重点实验室研究员陶燕铎、副研究员于瑞涛邀请，英国圣安德鲁斯大学（University of St Andrews）医学院Alan J. Stewart博士前来西北高原所执行国家外专局外国专家重点项目“青藏高原生物适应与进化及资源利用研究”，并作了题为"Circulatory zinc ‘sp...
关于Györy-Sárközy-Stewart猜想
最大素因子 Gyö ry-Sá rkö zy-Stewart猜想
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2018/2/6
本文在一定条件下证明了, 当$a,~b,~c$ 均为正整数, 并且$a\geq b>c$ 时, 乘积$(ab+1)(ac+1)(bc+1)$ 的最大素因子大于$k\log\log a$,其中$k$ 为一个正常数. 特别地, 当$carepsilon}$ 时, 上述结论成立, 其中$\varepsilon$ 为任意小正数.
Discussion of ‘Maximum likelihood estimation of a multi-dimensional log-concave density’ by M. Cule, R. Samworth and M. Stewart
likelihood estimation multi-dimensional log-concave density
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2015/8/20
I started looking at log-concave distributions when I was searching for an appropriate model
for subpopulations of multivariate flow cytometry data about ten years ago. The use of log-concave
...
Professor Helen Bronte-Stewart,Department of Neurology&Neurological Sciences at Stanford University（图）
Department of Neurology&Neurological Sciences at Stanford University Professor Neurology
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2015/8/20
Helen Bronte-Stewart,Professor,Department of Neurology&Neurological Sciences at Stanford University.She is Main research:Neurology&Neurological Sciences,Clinical Focus,Neurology,movement disorders.
Communicating Climate Change Impacts with Stakeholders on the Coast of Connecticut-Stewart B. McKinney National Wildlife Refuge
Stakeholders Connecticut-Stewart B. McKinney National Wildlife Refuge
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2014/12/8
This research project consists of two parts, a scientific analysis of potential impacts of climate change on a coastal wildlife refuge, Stewart B. McKinney National Wildlife Refuge, and its surroundin...
Professor Paul Stewart，Department of Human Resource Management at University of Strathclyde
Professor Paul Stewart，Department of Human Resource Management at University of Strathclyde
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2014/11/17
Professor Paul Stewart，Department of Human Resource Management at University of Strathclyde,Research Interests:Sociology of work and employment. Research in the field of labour processes and labour r...
It's 'a good thing': The Commodification of Femininity, Affluence, and Whiteness in the Martha Stewart Phenomenon
Cultural studies Gender Stewart Martha Media Taste Whiteness Commodification Femininity Affluence
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2014/10/29
This study examines the ideologies of gender, race, and class present in Martha Stewart's unprecedented popularity, beginning with the publication of Stewart's first magazine in 1990 and ending in Sep...
Professor Charles Stewart III，The Department of Chemistry at Massachusetts Institute of Technology（图）
Professor Charles Stewart III The Department of Chemistry at Massachusetts Institute of Technology
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2014/8/21
Charles Stewart III is the Kenan Sahin Distinguished Professor of Political Science at MIT, where he has taught since 1985. His research and teaching areas include congressional politics, elections, a...
Professor Iain W. Stewart,The Massachusetts Institute of Technology Department of Physics（图）
Professor Iain W. Stewart The Massachusetts Institute of Technology Department of Physics Theoretical Nuclear Particle Physics
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2014/8/19
Iain W. Stewart,Title(s): Professor of Physics,Email: iains@mit.edu,Phone: (617) 253-4848,Assistant: Joyce Berggren (617) 253-4827,Address:Massachusetts Institute of Technology,77 Massachusetts Avenue...
从误差传递的角度研究了30 m望远镜（TMT）三镜大型Stewart平台的转动精度。首先，利用奇异值分析Stewart平台速度雅克比矩阵，得出机构条件数与支腿伸长量的关系。利用条件数与系统误差传递系数的关系推导出TMT三镜特殊运动形式下支腿伸长量误差与平台姿态误差的关系，并使用MATLAB优化平台结构参数得出一组优化解。然后，利用ADAMS对之前的理论推导进行仿真验证。最后，利用已知误差传递模型结...
Associate Professor Randall O Stewart，Department of Languages and Literature at the University of Utah
Associate Professor Randall O Stewart Department of Languages and Literature at the University of Utah
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2014/3/6
Associate Professor Randall O Stewart，Department of Languages and Literature at the University of Utah, I am currently working on a comprehensive study of the Greek fortune telling book known as the ...
六维力传感器力敏元件的结构设计是实现低耦合、高精度性能的关键，标准Gough-Stewart结构六维力传感器力各向同性度的最佳值为0.707，其力各向同性的本质不可达特性直接影响测量精度。为此采用广义Gough-Stewart结构设计六维力传感器，通过具有最小结构参数描述集的复合单叶双曲面描述定义、分析力各向同性问题，推导了封闭、解析的数学描述，证明了其力各向同性的可达性，提出了满足力测量中心位置...
基于单叶双曲面的标准Stewart并联结构六维力传感器各向同性优化设计
Stewart并联结构 各向同性 传感器 优化设计 单叶双曲面
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2012/2/13
基于Stewart并联结构六维力/力矩传感器在空间六维力的准确检测上具有广泛前景,设计低耦合、高精度、易于标定和使用的六维力/力矩传感器是其结构设计的关键问题。传统Stewart并联结构几何参数描述为6个相互耦合的变量,不利于实现设计参数与设计指标的解耦,而且非正交条件下的各向同性使得六维力/力矩传感器仍存在耦合,为此提出基于单叶双曲面定义并构造Stewart并联结构,将最小结构参数描述集元素数量...