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A modified time domain subspace method for nonlinear identification based on nonlinear separation strategy EI SCIE Scopus
期刊论文 | 2018 , 94 (4) , 2491-2509 | Nonlinear Dynamics
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Abstract :

Nonlinear factors existing in engineering structures have drawn considerable attention, and nonlinear identification is a competent technique to understand the dynamic characteristics of nonlinear structures. Therefore, in this paper, a novel nonlinear separation subspace identification (NSSI) algorithm based on subspace algorithm and nonlinear separation strategy is proposed to conduct nonlinear parameter identification of nonlinear structures. For the proposed NSSI algorithm, the low-level excitation test is firstly conducted to obtain the transfer matrix in the linear response formula. Then, the obtained transfer matrix is used in the high-level excitation test to calculate the nonlinear response part by the proposed nonlinear separation strategy, and the subspace algorithm is utilized to identify the nonlinear parameter on the modified state-space model including only the nonlinear part. The proposed NSSI algorithm can reduce the coupling error caused by simultaneously processing both the large number part (corresponding to the linear part) and small number part (corresponding to the nonlinear part) in the traditional nonlinear subspace identification (NSI) algorithm. At last, two numerical experiments are given to validate the effectiveness of the developed novel nonlinear identification method. Furthermore, some influence factors are discussed to show the stability of the identification algorithm, and some comparisons between the proposed NSSI method and traditional NSI method are also conducted to demonstrate the advantages of the novel method. © 2018, Springer Nature B.V.

Keyword :

Dynamic characteristics Engineering structures Identification algorithms Nonlinear identifications Non-linear parameters Nonlinear separation Subspace identification Subspace identification methods

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GB/T 7714 Liu, Jie , Li, Bing , Miao, Huihui et al. A modified time domain subspace method for nonlinear identification based on nonlinear separation strategy [J]. | Nonlinear Dynamics , 2018 , 94 (4) : 2491-2509 .
MLA Liu, Jie et al. "A modified time domain subspace method for nonlinear identification based on nonlinear separation strategy" . | Nonlinear Dynamics 94 . 4 (2018) : 2491-2509 .
APA Liu, Jie , Li, Bing , Miao, Huihui , Zhang, Xiang , Li, Meng . A modified time domain subspace method for nonlinear identification based on nonlinear separation strategy . | Nonlinear Dynamics , 2018 , 94 (4) , 2491-2509 .
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Emotional classification and prediction of body movements based on silhouette EI Scopus CSCD PKU
期刊论文 | 2018 , 52 (1) , 160-165 | Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science)
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Abstract :

The features of the human behaviors were collected by camera and extracted with OpenCV in order to predict the emotions of individuals with the help of PAD scales based on previous studies. Ten subjects were requested to express their emotions through body movements, which were induced by Chinese folk music involving positive, middle and negative emotions. The states of subjects' emotions were evaluated by PAD scales while the behaviors of subjects were collected by camera. The features of individual behaviors were extracted with the characteristic of silhouette, including the relative areas of the individual silhouettes and their rate of change. The emotions of behaviors were classified by support vector machine with the evaluation of emotional scales in order to realize the emotional prediction of the behavioral features. The results realized the emotional classification of behaviors, and the prediction accuracy rate came to 76.92% with the categories of positive and negative emotions. © 2018, Zhejiang University Press. All right reserved.

Keyword :

Affective Computing Aspectual character Behavioral analysis Behavioral features Body silhouette Emotional classification Individual behavior Positive and negative emotions

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GB/T 7714 Yuan, Hong , Wang, Bo , Wang, Li et al. Emotional classification and prediction of body movements based on silhouette [J]. | Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) , 2018 , 52 (1) : 160-165 .
MLA Yuan, Hong et al. "Emotional classification and prediction of body movements based on silhouette" . | Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) 52 . 1 (2018) : 160-165 .
APA Yuan, Hong , Wang, Bo , Wang, Li , Xu, Mu-Xun . Emotional classification and prediction of body movements based on silhouette . | Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) , 2018 , 52 (1) , 160-165 .
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The comparison study of usability test methodology based on eye-tracking technology EI Scopus CPCI-S
会议论文 | 2018 , 456 , 763-772 | 17th International Conference on Man–Machine–Environment System Engineering, MMESE 2017
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Abstract :

Eye-tracking technology, as an objective-recording method of user’s eye movement data, has widely been applied in human–computer interface usability test. The quantitative analysis of eye movement data is good at comparing different UI designs; however, it can hardly probe the influential factors of usability issues from a UCD perspective. This research aimed at improving the validity of usability test, and tried to fill in the gap of merely applying eye movement data in usability test. In this paper, we compared the characteristics and differences of concurrent and retrospective think-aloud on UI usability evaluation, which were combined with eye-tracking system. We found that concurrent think-aloud would interfere users during the tests, thus increased their mental stress and cognitive workload, which suits assessing simple-operation and low-cognitive-workload tasks; the retrospective think-aloud enables user to operate more naturally, thus is proper for more complex task chain testing. Moreover, the retrospective think-aloud is more efficient for analyzing the cognitive factors of usability issues in-depth. © Springer Nature Singapore Pte Ltd. 2018.

Keyword :

Cognitive workloads Eye tracing Eye tracking systems Eye tracking technologies Interface usability Think aloud Usability evaluation Usability tests

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GB/T 7714 Yang, Zengyao , Zhang, Yu , Li, Meng et al. The comparison study of usability test methodology based on eye-tracking technology [C] . 2018 : 763-772 .
MLA Yang, Zengyao et al. "The comparison study of usability test methodology based on eye-tracking technology" . (2018) : 763-772 .
APA Yang, Zengyao , Zhang, Yu , Li, Meng , Chen, Tianning . The comparison study of usability test methodology based on eye-tracking technology . (2018) : 763-772 .
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Formalization modeling of maintenance based on agent EI Scopus
会议论文 | 2017 , 713 , 575-582 | 19th International Conference on Human-Computer Interaction, HCI International 2017
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Abstract :

Petri network is a conventional method of maintenance modeling. However it cannot characterize the hierarchical structure and time sequence characteristics of maintenance activities, and it is more difficult to model maintenance therblig, which is the atomic unit in maintenance activities. Based on the extension theory and Agent, the formalization representation of the therblig is defined in this paper, and the definition of maintenance activity is transformed into a description of multiple variables. The validity of the method is verified by examples. © Springer International Publishing AG 2017.

Keyword :

Action representations Conventional methods Extension theory Formalization model Hierarchical structures Human machine interaction Maintenance activity Maintenance models

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GB/T 7714 Tian, Shu-Jie , Wang, Bo , Wang, Li et al. Formalization modeling of maintenance based on agent [C] . 2017 : 575-582 .
MLA Tian, Shu-Jie et al. "Formalization modeling of maintenance based on agent" . (2017) : 575-582 .
APA Tian, Shu-Jie , Wang, Bo , Wang, Li , Xu, Dan . Formalization modeling of maintenance based on agent . (2017) : 575-582 .
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Workload evaluation model based on occupation of time and multi-resource EI Scopus CSCD PKU
期刊论文 | 2017 , 43 (12) , 2497-2504 | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
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Abstract :

To measure and evaluate the astronauts' workload of on-orbit maintenance, based on timeline analysis and multi-resource theory, the subjective and objective comprehensive evaluation of the workload was carried out by using two dimensions of “indirect acquisition value of the resource demand occupancy rate” and “direct measurement value of the occupied time”. A workload evaluation model based on dynamic time scene and time resource occupancy was put forward. In order to verify the effectiveness of the proposed model, the maintenance experiment of the liquid circuit subsystem, as a typical on-orbit maintenance task, was established. Testees were recruited to obtain the subjective workload questionnaires, maintenance videos were acquired, and the occupation time of therbligs was measured. The results reveal that the workload values of the proposed model have good agreement and significant correlation with subjective workload evaluation values. Hence the effectiveness of the workload evaluation model is validated. © 2017, Editorial Board of JBUAA. All right reserved.

Keyword :

Evaluation modeling Multi-resource On orbit Timeline analysis Workload

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GB/T 7714 Tian, Shujie , Wang, Bo , Wang, Li et al. Workload evaluation model based on occupation of time and multi-resource [J]. | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics , 2017 , 43 (12) : 2497-2504 .
MLA Tian, Shujie et al. "Workload evaluation model based on occupation of time and multi-resource" . | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics 43 . 12 (2017) : 2497-2504 .
APA Tian, Shujie , Wang, Bo , Wang, Li , Xu, Dan . Workload evaluation model based on occupation of time and multi-resource . | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics , 2017 , 43 (12) , 2497-2504 .
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Emotion evaluation through body movements based on silhouette extraction EI Scopus
会议论文 | 2017 , 10271 LNCS , 721-729 | 19th International Conference on Human–Computer Interaction, HCI International 2017
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Abstract :

In the modern age of technology development, the ability of computer to recognize and express emotions are expected in Human-Computer Interaction. This paper proposed a method to evaluate human emotions by extracting human explicit behaviors during interaction, which prevented interference from outside. To achieve the aim, OpenCV was used to extract silhouette features of physical behaviors and PAD scale was used to evaluate the emotions on time. And then, Emotion-Behavior Library was established based on both silhouette features and the results of PAD scale. In order to obtain positive, negative and negative emotions, Chinese folk music were used as emotional material in the experiment. Subjects were asked to express their emotions by body movements. The results verified the hypothesis: (1) behavioral features can effectively represent emotions; (2) the method for extracting the behavioral characteristics in this study is effective. Besides, we found that the front camera has a higher accuracy, for example accuracy of positive and negative was 72.5%, while the data of right camera hasn’t been classified effectively. © Springer International Publishing AG 2017.

Keyword :

Affective Computing Emotion evaluation Emotional classification PAD scale Physical behaviors

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GB/T 7714 Yuan, Hong , Wang, Bo , Wang, Li et al. Emotion evaluation through body movements based on silhouette extraction [C] . 2017 : 721-729 .
MLA Yuan, Hong et al. "Emotion evaluation through body movements based on silhouette extraction" . (2017) : 721-729 .
APA Yuan, Hong , Wang, Bo , Wang, Li , Xu, Muxun . Emotion evaluation through body movements based on silhouette extraction . (2017) : 721-729 .
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生化分析仪人机界面可用性因素结构模型研究
期刊论文 | 2017 , (6) , 144-147 | 中国医疗设备
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Abstract :

本文在分析可用性定义及Jacob Nielsen、ISO9241-11、Shackle、SUMI等建立的可用性因素结构模型的基础上,结合生化分析仪的应用环境、专业性及问卷调查提取的可用性一级、二级因素,建立了适合生化分析仪人机界面的可用性因素结构模型,并对模型中的可用性因素进行了权重考量.最后,以校企合作医疗项目的人机界面设计应用为例,来验证上述模型.该模型不但有助减轻医疗设备研发人员及医护操作人员的脑力负荷,还提高了其工作效率和工作质量.

Keyword :

人机界面 可用性因素结构模型 生化分析仪 用户模型

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GB/T 7714 王芳兰 , 许睦旬 , 陶涛 . 生化分析仪人机界面可用性因素结构模型研究 [J]. | 中国医疗设备 , 2017 , (6) : 144-147 .
MLA 王芳兰 et al. "生化分析仪人机界面可用性因素结构模型研究" . | 中国医疗设备 6 (2017) : 144-147 .
APA 王芳兰 , 许睦旬 , 陶涛 . 生化分析仪人机界面可用性因素结构模型研究 . | 中国医疗设备 , 2017 , (6) , 144-147 .
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生化分析仪人机界面可用性因素结构模型研究
期刊论文 | 2017 , (6) , 144-147 | 中国医疗设备
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Keyword :

人机界面 可用性因素结构模型 生化分析仪 用户模型

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GB/T 7714 王芳兰 , 许睦旬 , 陶涛 . 生化分析仪人机界面可用性因素结构模型研究 [J]. | 中国医疗设备 , 2017 , (6) : 144-147 .
MLA 王芳兰 et al. "生化分析仪人机界面可用性因素结构模型研究" . | 中国医疗设备 6 (2017) : 144-147 .
APA 王芳兰 , 许睦旬 , 陶涛 . 生化分析仪人机界面可用性因素结构模型研究 . | 中国医疗设备 , 2017 , (6) , 144-147 .
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颜色调查
期刊论文 | 2014 , (8) , 127-137 | 设计
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Abstract :

本文依据16年的调查经验和数据,分析了如何进行颜色调查,<em>大学</em>生喜好的颜色分布及主要颜色对他们的心理感受,还比较了一般<em>大学</em>生与艺术类学生喜好颜色的差异,最后专题分析了为什么服装和空调款式变化很快,满意度和舒适度概念使用存在问题.

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GB/T 7714 . 颜色调查 [J]. | 设计 , 2014 , (8) : 127-137 .
MLA "颜色调查" . | 设计 8 (2014) : 127-137 .
APA . 颜色调查 . | 设计 , 2014 , (8) , 127-137 .
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王靓作品
期刊论文 | 2008 , (2) , 12 | 当代艺术
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GB/T 7714 . 王靓作品 [J]. | 当代艺术 , 2008 , (2) : 12 .
MLA "王靓作品" . | 当代艺术 2 (2008) : 12 .
APA . 王靓作品 . | 当代艺术 , 2008 , (2) , 12 .
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