Hu Wang

Beijing Institute of Technology

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Enying Li

Central South University

Guangyao Li

Harbin Institute of Technology

Zhenxing Cheng

Hunan University

Xinchao Jiang

Hunan University

Guangyao Li

Beijing University of Technology

Jichao Yin

Hunan University

Guangyao Li

Qilu University of Technology

Ziming Wen

Beijing Institute of Technology

Xuntao Wang

Xi'an Shiyou University

Yang Zeng

China Railway Corporation

Cooperative Institutions

European Organization for Nuclear Research

327

Centro Brasileiro de Pesquisas Físicas

315

University of Chinese Academy of Sciences

196

Peking University

162

Tsinghua University

157

Centre National de la Recherche Scientifique

152

École Polytechnique Fédérale de Lausanne

145

State Key Laboratory of Nuclear Physics and Technology

112

Universitat de Barcelona

107

University of Zurich

107

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Analysis on the causes of cracks on asphalt concrete pavement

Shanxi Architecture (2008)

Hu Wang

Based upon analysis of distribution rang and types of cracks on asphalt concrete pavement reasons caused the transverse crack,longitudinal crack and alligator cracks on asphalt concrete pavement are discussed,which is significant to prevent this kind of defect of asphalt concrete pavement.

Asphalt concrete

Asphalt pavement

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CPOT: A suitable tool for crack propagation path optimization based on image recognition

Engineering Fracture Mechanics (2019)

Kerong Jiang Hu Wang Lielang Zhu Cong Cheng

10.1016/j.engfracmech.2019.106765

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Citations (5)

泸州区块深层页岩裂缝脉体发育特征及成脉流体活动

Earth Science-Journal of China University of Geosciences (2022)

Chengpeng Yao Haijiao Fu Yingzhe Ma Detian Yan Hu Wang

摘要: 裂缝脉体中蕴藏着天然裂缝演化与古流体充注活动等重要信息，对于深层页岩气保存条件也有指示意义.针对泸州区块龙马溪组深层页岩裂缝脉体，综合运用光学薄片、阴极发光、流体包裹体及微区原位等分析手段，分析了裂缝脉体的发育特征，研究了成脉流体活动及其成岩环境演化，探讨了页岩气保存条件.研究发现，深层页岩裂缝脉体主要为石英与白云石或方解石组成的复合脉体，不同矿物之间表现出较复杂的切割关系，盐水包裹体与高密度甲烷包裹体大量发育，且裂缝脉体主要形成于还原性环境.整体看来，构造抬升背景下，深层页岩裂缝开始形成且处于不断开启或闭合过程，3期不同性质的古流体多次充注胶结，较封闭的成岩体系对深层页岩气的保存有利. 关键词: 泸州区块 / 龙马溪组 / 深层页岩 / 裂缝脉体 / 页岩气 / 保存条件 / 油气地质

10.3799/dqkx.2022.021

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Citations (2)

Constructing crafts control of rubber bitumen

Shanxi Architecture (2007)

Hu Wang

Combined with the road surface repairing project of Ning-Gao expressway,it emphasizes on researching the producing crafts of rubber bitumen and constructing crafts of rubber bitumen thin layer.It also brings forward the controlling points during expressway surface constructing process of rubber bitumen stress absorbing layer and sliding layer.

Road surface

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Optimal Operation of Pumped Hydro Energy Storage in Power System With Large Integration of Photovoltaic Generation

Power System Technology (2014)

Hu Wang

With the rapid development of photovoltaic(PV) generation the randomness and intermittence of PV generation evidently affect the secure and stable operation of power grid. A power supply reliability evaluation model is established to assess the impacts on grid-connected PV generation on power grid operation. It is proposed to improve power system reliability by pumped storage power station coordinated with grid-connected PV generation. Taking the minimized cost as the object, an optimal dispatching model of pumped storage power station is built, and the uncertainty of load demand, the uncertainty of PV generation output and the faults of traditional generating units are simulated by Monte Carlo simulation. The proposed dispatching model is solved by genetic algorithm combined with Tabu search. The feasibility of the proposed model and algorithm is validated by IEEE 24-bus system, and simulation results show that using the proposed method the reliability of power grid can be improved and the electric power surplus can be effectively coped with.

Stand-alone power system

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Theory and Methods about Shooting Precision Test on Few Samples

Journal of Armored Force Engineering Institute (2004)

Hu Wang

This paper gives the probability nature of multivariate normal distribution and distribution. Also discussed is how to test variance of 2-dimensional normal distribution. The parameters of the probability of rejecting true and accepting false are given. The OC curves are established. The conclusion is of great value for weapon equipment in hypothetical test with few samples.

Value (mathematics)

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The optimization model of activity drivers and its improvement

Journal of Southeast University (2008)

Hu Wang

The theory of activity cost drivers optimization proposed by Babad,Balachandran and Carsten is based on the accurate measurement of activity cost and follows the rule of cost—value and optimizing activity cost drivers by building a mathematical model.The hypothesis under it is that considering the accuracy of activity cost measurement,the activity cost of the enterprises who put it in practice,has the interchangeable specialty.In some degree,the model is more concerned with the method of cost drivers' optimization,but ignores that this optimization also needs the value analysis of value—cost to establish a standard to judge the value increment trait of activities.An effective model of activity cost drivers optimization should consider both the standard and the method of optimization.The paper tries to improve the model by establishing the standard of two dimensional activities and giving each activity a strategical proportion.

Value (mathematics)

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The comparison of A* algorithm and steepest descent method for path planning

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2017)

Hao Zhang Hu Wang Yuan Jian Yu Hu Wen-Juan Ren

This study mainly introduces the advanced A* algorithm and steepest descent method for path planning based on grid form. A* algorithm is a node-searching strategy, namely uses the heuristic function to estimate the cost of the path from the start to the goal in the grid maps. The branching factor of A* algorithm describes the moving directions, which will be selected according to the path length in different grid maps. The steepest descent method adopts a heuristic-based gradient method with grid maps to search the shortest path. In this paper the appropriate path planning method will be selected by comparing the run time and the creation of complex maps of the two methods.

Grid method multiplication

Any-angle path planning

10.1117/12.2281907

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Citations (1)

Time-based reflow soldering optimization by using adaptive Kriging-HDMR method

Soldering and Surface Mount Technology (2016)

Liming Chen Enying Li Hu Wang

Purpose Reflow soldering process is an important step of the surface mount technology. The purpose of this paper is to minimize the maximum warpage of shielding frame by controlling reflow soldering control parameters. Design/methodology/approach Compared with other reflow-related design methods, both time and temperate of each extracted time region are considered. Therefore, the number of design variable is increased. To solve the high-dimensional problem, a surrogate-assisted optimization (SAO) called adaptive Kriging high-dimensional representation model (HDMR) is used. Findings Therefore, the number of design variable is increased. To solve the high-dimensional problem, a surrogate-assisted optimization (SAO) called HDMR is used. The warpage of shield frame is significantly reduced. Moreover, the correlations of design variables are also disclosed. Originality/value Compared with the original Kriging HDMR, the expected improvement (EI) criterion is used and a new projection strategy is suggested to improve the efficiency of optimization method. The application suggests that the adaptive Kriging HDMR has potential capability to solve such complicated engineering problems.

Surrogate model

Reflow soldering

10.1108/ssmt-07-2015-0021

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Citations (21)

Optimization of a composite pyramidal lattice structure for the auxiliary converter cabinet

Engineering Optimization (2021)

Zhiyuan Qi Hu Wang Guanqiang He Biyu Li Guangyao Li

The auxiliary converter cabinet (ACC) of electric multiple unit vehicles guarantees the regular operation of electrical equipment. This article develops and optimizes a parametric model of the ACC based on lightweight composite pyramidal lattice materials to improve its performance. To make the sequential optimization procedure automatically closed-loop, an ACC model with parameter interfaces is built. A representative volume element model is adopted to obtain the physical properties of the pyramidal lattice structure. After global sensitivity analysis, three popular multi-objective optimization algorithms- multiobjective particle swarm optimization (MOPSO), non-dominated sorting genetic algorithm-III (NSGA-III) and multi-objective evolutionary algorithm based on decomposition (MOEAD)—are used to optimize the lattice ACC. MOPSO obtained the best results, and the lattice structure greatly improved the performance of the ACC in terms of random vibration and shock conditions.

Lattice (music)

10.1080/0305215x.2021.1949006

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Citations (2)