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Loghman PIRI, Vahidreza GHEZAVATI, Ashkan HAFEZALKOTOB
《工程管理前沿(英文)》 2022年 第9卷 第1期 页码 117-134 doi: 10.1007/s42524-020-0115-3
关键词: project scheduling resource leveling between projects constrained resources game theory Benders decomposition
LIU Hongyi, WANG Fei, WANG Lei
《机械工程前沿(英文)》 2007年 第2卷 第2期 页码 168-174 doi: 10.1007/s11465-007-0028-4
Robust train speed trajectory optimization: A stochastic constrained shortest path approach
Li WANG, Lixing YANG, Ziyou GAO, Yeran HUANG
《工程管理前沿(英文)》 2017年 第4卷 第4期 页码 408-417 doi: 10.15302/J-FEM-2017042
关键词: train speed trajectory optimization railway operation stochastic programming
A constrained neural network model for soil liquefaction assessment with global applicability
Yifan ZHANG, Rui WANG, Jian-Min ZHANG, Jianhong ZHANG
《结构与土木工程前沿(英文)》 2020年 第14卷 第5期 页码 1066-1082 doi: 10.1007/s11709-020-0651-2
关键词: soil liquefaction assessment case history dataset constrained neural network model existing knowledge
Jing LU, Yu XIANG, Qiao NI
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 449-455 doi: 10.1007/s11465-011-0240-0
Considering the direct and converse piezoelectric effect, expressions of piezoelectric membrane internal forces in the piezoelectric constrained layer were given. The control equations of the piezoelectric constrained layer and host plate were obtained in according with the thin plate theory. Based on the layer wised principle, the integrated first order differential equation of an active constrained layer damping (ACLD) plate was derived for the simply supported boundary condition. Then, this method was expanded to the ACLD plate with cantilever boundary condition by virtue of geometric analogy method. Employing the extended homogeneous capacity precision integration approach, a high precision semi-analytical method was proposed to analyze the dynamic characteristics of the ACLD plate with various boundary conditions. The comparison with the literature results has verified the accuracy and effectiveness of the present method.
关键词: active constrained layer damping (ACLD) plate dynamic characteristics semi-analytical method extended homogeneous capacity precision integration approach
Mohit Nahata, Chang Y. Seo, Pradeep Krishnakumar, Johannes Schwank
《化学科学与工程前沿(英文)》 2018年 第12卷 第1期 页码 194-208 doi: 10.1007/s11705-017-1647-x
李旲,曹宏铎,胡云昌,山秀明
《中国工程科学》 2004年 第6卷 第5期 页码 45-48
脉冲暂态混沌神经网络(PTCNN)是对暂态混沌神经网络的改进,呈现丰富的动力学性质,具有很强的跳出局部最小点的功能,在解决无约束非线性规划问题时,可以找到包括全局和局部最小值的尽量全面的最优解。当遇到带约束条件的非线性规划问题时,只有对约束条件进行合理处理,才能更有效地解决约束非线性规划问题。文章使用惩罚函数方法对含有约束条件的非线性规划问题进行处理,将其变成一个不含约束条件的非线性规划问题,进而用PTCNN求解,得到了令人满意的结果。
Hybrid genetic algorithm for bi-objective resource-constrained project scheduling
Fikri KUCUKSAYACIGIL, Gündüz ULUSOY
《工程管理前沿(英文)》 2020年 第7卷 第3期 页码 426-446 doi: 10.1007/s42524-020-0100-x
关键词: backward–forward scheduling hybrid bi-objective genetic algorithm injection procedure maximum cash balance multi-objective multi-project multi-mode resource-constrained project scheduling problem
Ruiming LI,Yan-An YAO
《机械工程前沿(英文)》 2016年 第11卷 第2期 页码 159-169 doi: 10.1007/s11465-016-0398-6
In this study, a novel duoprism mechanism that demonstrates a fascinating eversion motion is developed. The mechanism comprises three scalable platforms and nine retractable limbs and is constructed by inserting prismatic and revolute joints into the edges and vertices of the duoprism, respectively. According to mobility and kinematic analyses, the mechanism has five degrees of freedom. Six inputs, including a redundant one, are required to overcome singularity and achieve an eversion motion. In the eversion motion, three platforms expand/contract synchronously, and the mechanism continuously turns inside out. The detailed gaits of eversion motion along an ellipse and a circle after a cycle are illustrated with two examples. A kinematic simulation is conducted, and a manual prototype is fabricated to verify the feasibility of the eversible duoprism mechanism.
Manufacturing cost constrained topology optimization for additive manufacturing
Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO
《机械工程前沿(英文)》 2019年 第14卷 第2期 页码 213-221 doi: 10.1007/s11465-019-0536-z
关键词: topology optimization manufacturing cost additive manufacturing powder bed
Yingjun WANG,David J. BENSON
《机械工程前沿(英文)》 2016年 第11卷 第4期 页码 328-343 doi: 10.1007/s11465-016-0403-0
In this paper, an approach based on the fast point-in-polygon (PIP) algorithm and trimmed elements is proposed for isogeometric topology optimization (TO) with arbitrary geometric constraints. The isogeometric parameterized level-set-based TO method, which directly uses the non-uniform rational basis splines (NURBS) for both level set function (LSF) parameterization and objective function calculation, provides higher accuracy and efficiency than previous methods. The integration of trimmed elements is completed by the efficient quadrature rule that can design the quadrature points and weights for arbitrary geometric shape. Numerical examples demonstrate the efficiency and flexibility of the method.
关键词: isogeometric analysis topology optimization level set method arbitrary geometric constraint trimmed element
约束优化下的霍曼转移 None
Li XIE, Yi-qun ZHANG, Jun-yan XU
《信息与电子工程前沿(英文)》 2018年 第19卷 第11期 页码 1444-1458 doi: 10.1631/FITEE.1800295
关键词: 霍曼转移;非线性规划;约束优化;变分法
Energy storage resources management: Planning, operation, and business model
《工程管理前沿(英文)》 页码 373-391 doi: 10.1007/s42524-022-0194-4
关键词: energy storage system energy storage resources management planning configuration operational management business model
Forest resources in China ---- Figures and Graphics
《农业科学与工程前沿(英文)》 2017年 第4卷 第4期 页码 504-508 doi: 10.15302/J-FASE-2017191
标题 作者 时间 类型 操作
Developing a new model for simultaneous scheduling of two grand projects based on game theory and solving the model with Benders decomposition
Loghman PIRI, Vahidreza GHEZAVATI, Ashkan HAFEZALKOTOB
期刊论文
Fuzzy force control of constrained robot manipulators based on impedance model in an unknown environment
LIU Hongyi, WANG Fei, WANG Lei
期刊论文
Robust train speed trajectory optimization: A stochastic constrained shortest path approach
Li WANG, Lixing YANG, Ziyou GAO, Yeran HUANG
期刊论文
A constrained neural network model for soil liquefaction assessment with global applicability
Yifan ZHANG, Rui WANG, Jian-Min ZHANG, Jianhong ZHANG
期刊论文
Dynamic characteristics analysis of active constrained layer damping plate with various boundary conditions
Jing LU, Yu XIANG, Qiao NI
期刊论文
New approaches to water purification for resource-constrained settings: Production of activated biochar
Mohit Nahata, Chang Y. Seo, Pradeep Krishnakumar, Johannes Schwank
期刊论文
Hybrid genetic algorithm for bi-objective resource-constrained project scheduling
Fikri KUCUKSAYACIGIL, Gündüz ULUSOY
期刊论文
Manufacturing cost constrained topology optimization for additive manufacturing
Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO
期刊论文
Geometrically constrained isogeometric parameterized level-set based topology optimization via trimmed
Yingjun WANG,David J. BENSON
期刊论文