作者： Si-Da Zhou;Yuan-Chen Ma;Li Liu;Jie Kang;Zhi-Sai Ma;Lei Yu （a School of Aerospace Engineering, Beijing Institute of Technology, Zhongguancun South Street 5, 100081 Beijing, China b Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, 100081 Beijing, China c Key Laboratory of Autonomous Navigation and Control for Deep Space Exploration, Ministry of Industry and Information Technology, 100081 Beijing, China）

出处： Mechanical Systems and Signal Processing 2018 Vol.98 P722-755

关键词： Modal parameter estimation;Time-varying structures;Least squares support vector machine;Vector time-dependent autoregressive model;Output-only;Compactly supported radial basis function

摘要： Identification of time-varying modal parameters contributes to the structural health monitoring, fault detection, vibration control, etc. of the opera ...

作者： Xiao Zhen;You Yong;Xu Chun Guang;Xiao Ding Guo;Liu Fang Fang;Li Xin Liang （a School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China b Zhuhai Campus, Beijing Institute of Technology, Zhuhai, 519000, China）

出处： Robotics and Computer-Integrated Manufacturing 2018 Vol.49 P134-142

关键词： Quaternion;Matrix transform;Coordinate conversion;Ultrasonic alignment;Robotic scanning trajectory

摘要： Micro-defects located on complex geometrical structures are difficult to inspect using traditional non-destructive testing (NDT) equipment, especially ...

作者： Chuan Zhang;Liehuang Zhu;Chang Xu;Rongxing Lu （a School of Computer Science & Technology, Beijing Institute of Technology, Beijing, China b Faculty of Computer Science, University of New Brunswick, Fredericton, Canada）

出处： Future Generation Computer Systems 2018 Vol.79 Part 1 P16-25

关键词： Disease prediction;Privacy-preserving;Single-Layer Perceptron;Cloud computing

摘要： Disease prediction systems have played an important role in people’s life, since predicting the risk of diseases is essential for people to lead a hea ...

作者： Hui Liu;Weida Wang;Changle Xiang;Lijin Han;Haizhao Nie （School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China）

出处： Mechanical Systems and Signal Processing 2018 Vol.99 P30-46

关键词： Wavelet transform;Gaussian mixture model;Noise variance;Electro-mechanical transmission

摘要： The precise and efficient noise variance estimation is very important for the processing of all kinds of signals while using the wavelet transform to ...

作者： Zhi-Sai Ma;Li Liu;Si-Da Zhou;Lei Yu;Frank Naets;Ward Heylen;Wim Desmet （a School of Aerospace Engineering, Beijing Institute of Technology, Zhongguancun South Street 5, 100081 Beijing, China b Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300B, 3001 Leuven, Belgium）

出处： Mechanical Systems and Signal Processing 2018 Vol.98 P684-701

关键词： Time-varying structures;Time-dependent autoregressive moving average;Kernel recursive extended least squares;Output-only identification;Modal parameter estimation

摘要： The problem of parametric output-only identification of time-varying structures in a recursive manner is considered. A kernelized time-dependent autor ...

作者： 唐佳林，郑杰锋，李熙莹，苏秉华 （北京理工大学珠海学院 信息学院；中山大学 工学院 智能交通研究中心；广东省智能交通系统重点实验室）

出处： 计算机应用研究 2018 第2期

关键词： 视频稳像 特征匹配 近似最邻近搜索算法 仿射变换 运动补偿

摘要： 针对在复杂背景下航拍视频的抖动情况，为了实时输出稳定的视频，提出了一种改进的特征匹配算法和全局运动补偿相结合的视频稳像算法。首先，利用尺度不变的SURF算法提取特征点并计算描述符，再结合快速近似最邻近匹配算法得到匹配点对，再通过双向匹配以及K近邻算法筛选优秀匹配点，从而提高匹配正确率。其次，提出了一 ...

作者： Shuliang Wang;Yiping Zhao;Yue Shu;Hanning Yuan;Jing Geng;Shaopeng Wang

出处： Journal of Computational and Applied Mathematics 2018 Vol.327 P372-387

关键词： Local extremum;Fast search;Gradient descent;Intelligent maximal information coefficient (iMIC);Big data

摘要： Maximal information coefficient (MIC) is an indicator to explore the correlation between pairwise variables in large data sets, and the accuracy of MI ...

作者： Xiaojian Ma;Tianyu Xing;Biao Huang;Qiuhe Li;Yifei Yang

出处： Ultrasonics Sonochemistry 2018 Vol.40 Part A P480-487

关键词： Gas bubble behaviors;Acoustic fields;Bjerknes force;Buoyancy force

摘要： The objective of this paper is to apply the combined experimental and theoretical method to investigate the various behaviors of gas bubbles in an aco ...

作者： Zhichao Dong;Haobo Cheng （a Laboratory of Space astronomy and technology, National Astronomical Observatories of the Chinese Academy of Sciences, Beijing 100012, China b School of Optoelectronics, Joint Research Center for Optomechatronics Design and Engineering, Beijing Institute of Technology, Beijing 100081, China c Shenzhen Research Institute, Beijing Institute of Technology, Shenzhen 518057, China）

出处： Optics and Lasers in Engineering 2018 Vol.100 P176-185

关键词： Phase retrieval;Single-shot fringe pattern;Hybrid algorithm;Wavelet transform

摘要： A highly noise-tolerant hybrid algorithm (NTHA) is proposed in this study for phase retrieval from a single-shot spatial carrier fringe pattern (SCFP) ...

作者： Yu Ren;Zhiyong Xue;Xiaodong Yu;Chengwen Tan;Fuchi Wang;Hongnian Cai （a School of energy, power and mechanical engineering, North China Electric Power University, Beijing 102206, PR China b School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China c National Key Laboratory of Science and Technology on Materials Under Shock and Impact, Beijing Institute of Technology, Beijing 100081, PR China）

出处： International Journal of Impact Engineering 2018 Vol.111 P77-84

关键词： Metastable β-titanium alloy;Shock-induced martensite phase transformation;Spall fracture;Spall strength;Nucleation and propagation of micro-damage

摘要： The spall fracture behavior of a typical metastable β titanium alloy, Ti–10V–2Fe–3Al, is systemically investigated during one-dimensional shock loadin ...