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A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot
Kejia LI, Xilun DING, Marco CECCARELL
《机械工程前沿(英文)》 2012年 第7卷 第2期 页码 219-230 doi: 10.1007/s11465-012-0320-9
This article focuses on the dynamic index and performance of a radial symmetric six-legged robot. At first the structure of the robot is described in brief and its inverse kinematics is presented. Then the dynamic model is formulated as based on the Lagrange equations. A novel index of total torque is proposed by considering the posture of the supporting legs. The new index can be used to optimize the leg’s structure and operation for consuming minimum power and avoiding unstable postures of the robot. A characterization of the proposed six-legged robot is obtained by a parametric analysis of robot performance through simulation using the presented dynamic model. Main influences are outlined as well as the usefulness of the proposed performance index.
Liang ZHU, Jingkang WANG
《化学科学与工程前沿(英文)》 2013年 第7卷 第3期 页码 322-328 doi: 10.1007/s11705-013-1348-z
关键词: tobramycin aminoglycoside refractive index detector high-performance liquid chromatography ion-pairing
Micromixing performance of the teethed high shear mixer under semi-batch operation
《化学科学与工程前沿(英文)》 2022年 第16卷 第4期 页码 546-559 doi: 10.1007/s11705-021-2069-3
关键词: high shear mixer semi-batch operation micromixing performance Villermaux/Dushman system segregation index
Pavement sustainability index for highway infrastructures: A case study of Maryland
Stella O. OBAZEE-IGBINEDION, Oludare OWOLABI
《结构与土木工程前沿(英文)》 2018年 第12卷 第2期 页码 192-200 doi: 10.1007/s11709-017-0413-y
关键词: pavement indices sustainability pavement performance flexible pavements
郭峰,刘慧
《中国工程科学》 2011年 第13卷 第8期 页码 97-102
文章将功能系数法与广泛应用于管理评价的逻辑框架法进行综合运用,认为项目及组织的可持续发展是建设项目协调管理的最高境界,从目标协调管理绩效、组织协调管理绩效、利益相关方协调管理绩效及项目和组织可持续发展性4个方面建立了建设项目协调管理绩效评价指标体系,并给出各指标的计算方法,运用功能系数法计算建设项目协调管理绩效综合评价功能系数,从而有效量化了对建设项目协调管理绩效的综合评价。最后,通过算例研究,验证了指标体系构建方法及各指标计算方法的可行性,这个方法可以有效地衡量协调管理的功能。
Forecasting industrial emissions: a monetary approach
Yang DONG, Yi LIU, Jining CHEN, Yebin DONG, Benliang QU
《环境科学与工程前沿(英文)》 2012年 第6卷 第5期 页码 734-742 doi: 10.1007/s11783-012-0451-6
关键词: industrial emissions environmental performance index spatial planning industrial land use
Po-Chih LEE, Jyh-Jone LEE
《机械工程前沿(英文)》 2012年 第7卷 第2期 页码 163-187 doi: 10.1007/s11465-012-0324-5
This paper presents the analysis of three parallel manipulators with Schoenflies-motion. Each parallel manipulator possesses two limbs in structure and the end-effector has three DOFs (degree of freedom) in the translational motion and one DOF in rotational motion about a given direction axis with respect to the world coordinate system. The three isoconstrained parallel manipulators have the structures denoted as CuuUwHw-//-CvvUwHw, CuRuuUhw-//-CvRvvUhwand CuPuUhw-//- CvPvUhw. The kinematic equations are first introduced for each manipulator. Then, Jacobian matrix, singularity, workspace, and performance index for each mechanism are subsequently derived and analysed for the first time. The results can be helpful for the engineers to evaluate such kind of parallel robots for possible application in industry where pick-and-place motion is required.
关键词: parallel manipulator schoenflies motion kinematics singularity workspace performance index
赵杰华,康厚荣
《中国工程科学》 2008年 第10卷 第12期 页码 73-78
在明确交通科技项目实施流程的基础上,站在后评价视角分析项目的社会经济效益,制订出一套相对完善的项目评价标准,同时应用Microsoft Visual Basic 6.0和Access 2003搭建系统框架,充分实现交通科技项目评价的科学性、有效性、合理性,促进决策过程的程序化、科学化。
Lodging resistance and yield potential of winter wheat: effect of planting density and genotype
Yonggui XIAO,Jianjun LIU,Haosheng LI,Xinyou CAO,Xianchun XIA,Zhonghu HE
《农业科学与工程前沿(英文)》 2015年 第2卷 第2期 页码 168-178 doi: 10.15302/J-FASE-2015061
关键词: common wheat yield potential lodging performance pushing resistance leaf area index
Research on port ecological suitability evaluation index system and evaluation model
Yaofeng XIE,Xia LV,Ru LIU,Liuyan MAO,Xiaoxi LIU
《结构与土木工程前沿(英文)》 2015年 第9卷 第1期 页码 65-70 doi: 10.1007/s11709-014-0258-6
关键词: port ecological suitability press-state-response (PSR) model evaluation index system
陶钧,孔德萍
《中国工程科学》 2008年 第10卷 第1期 页码 91-96
核电厂二回路系统的水质控制与关键重要设备蒸汽发生器的运行寿命有着密切的关系,秦山核电厂运行16年来,随着秦山核电厂二回路系统水化学管理的不断改进,二回路系统的水质不断改善。这些管理改进主要体现在管理理念的改变,二回路系统高AVT(全会法处理方式)处理、对凝结水精处理装置的优化运行以及大修及启动过程的严格控制等。通过这些改进措施的实施,电厂的WANO(世界核营运者协会)化学性能指标从1997年的1.66下降到2006年的1.00,达到了世界先进水平。二回路水化学的改善确保了蒸汽发生器传热管的结构完整性。
关键词: 二回路 水化学 WANO化学性能指标
《农业科学与工程前沿(英文)》 doi: 10.15302/J-FASE-2023521
● Score index methods readily discriminate genotypes adapted to a target environment.
关键词: Aerobic rice breeding selection drought resilience production capacity index resilience capacity index stress score index upland
Parham SHOAEI, Houtan Tahmasebi OROMI
《结构与土木工程前沿(英文)》 2019年 第13卷 第4期 页码 890-903 doi: 10.1007/s11709-019-0524-8
关键词: tuned liquid damper lead-rubber bearing system probabilistic framework steel shear building relative performance index Monte-Carlo sampling
SUSTAINABLE NITROGEN MANAGEMENT INDEX: DEFINITION, GLOBAL ASSESSMENT AND POTENTIAL IMPROVEMENTS
《农业科学与工程前沿(英文)》 2022年 第9卷 第3期 页码 356-365 doi: 10.15302/J-FASE-2022458
● A composite N management index is proposed to measure agriculture sustainability.
关键词: global assessment indicator nitrogen management sustainable agriculture sustainable development goals
标题 作者 时间 类型 操作
A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot
Kejia LI, Xilun DING, Marco CECCARELL
期刊论文
Fast determination of tobramycin by reversed-phase ion-pair high performance liquid chromatography witha refractive index detector
Liang ZHU, Jingkang WANG
期刊论文
Pavement sustainability index for highway infrastructures: A case study of Maryland
Stella O. OBAZEE-IGBINEDION, Oludare OWOLABI
期刊论文
Forecasting industrial emissions: a monetary approach
Yang DONG, Yi LIU, Jining CHEN, Yebin DONG, Benliang QU
期刊论文
Singularity and workspace analysis of three isoconstrained parallel manipulators with schoenflies motion
Po-Chih LEE, Jyh-Jone LEE
期刊论文
Lodging resistance and yield potential of winter wheat: effect of planting density and genotype
Yonggui XIAO,Jianjun LIU,Haosheng LI,Xinyou CAO,Xianchun XIA,Zhonghu HE
期刊论文
Research on port ecological suitability evaluation index system and evaluation model
Yaofeng XIE,Xia LV,Ru LIU,Liuyan MAO,Xiaoxi LIU
期刊论文
Isolating higher yielding and more stable rice genotypes in stress environments: fine-tuning a selection method using production and resilience score indices
期刊论文
A combined control strategy using tuned liquid dampers to reduce displacement demands of base-isolated structures: a probabilistic approach
Parham SHOAEI, Houtan Tahmasebi OROMI
期刊论文