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Prediction of the local and total thermal insulations of a bedding system based on the 3D virtual simulation technology

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Building simulation 2023年第8期16卷 1467-1480页

作者： Qing Zheng Hongbo Wang Ying Ke School of Textile Science and Engineering Jiangnan UniversityWuxi 214122China School of Design Jiangnan UniversityWuxi 214122China

The thermal insulation of a bedding system is one of the most critical factors affecting sleeping thermal *** study reported a mathematical model to evaluate both local and total thermal insulations of a bedding *** determine the geometric parameters in the model,the geometric model of the bedding system was developed using a 3D virtual simulation *** reliability was validated by comparing it with the 3D scanning *** predicted local and total thermal insulations of bedding systems were compared with those measured by the thermal manikin obtained in a previous *** bedding systems included six down quilts with different filling weights and involved three body *** results showed that the predicted thermal insulation values agreed well with the experimental *** predicted local and total thermal insulations were with acceptable accuracy,whose errors were within 20%and 10%,***,the research discussed the effects of two main parameters(i.e.,the proportions and partial thermal resistances of heat transfer parts)on bedding thermal insulations and provided practical suggestions for regulating bedding thermal *** study has important implications for evaluating the thermal comfort of the bedding system and contributes to improving the sleeping environment.

关键词： thermal insulation prediction model bedding system heat transfer virtual simulation

Evaluation Model of Design for Operation and Architecture of Hierarchical virtual simulation for Flight Vehicle Design

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Chinese Journal of Aeronautics 2012年第2期25卷 216-226页

作者： LIU Hua TIAN Yongliang ZHANG Chaoying YIN Jiao SUN Yijie School of Aeronautic Science and Engineering Beihang University Beijing 100191 China Institute for Aviation Safety China Academy of Civil Aviation Science and Technology Beijing 100028 China

In order to take requirements for commercial operations or military missions into better consideration in new flight vehicle design, a tri-hierarchical task classification model of ＂design for operation＂ is proposed, which takes basic man-object interaction task, complex collaborative operation and large-scale joint operation into account. The corresponding general architecture of evaluation criteria is also depicted. Then a virtual simulation-based approach to implement the evaluations at three hierarchy levels is mainly analyzed with a detailed example, which validates the feasibility and effectiveness of evaluation architecture. Finally, extending the virtual simulation architecture from design to operation training is discussed.

关键词： flight vehicle design operation virtual simulation training evaluation model

Special Vehicle Target Detection and Tracking Based on virtual simulation Environment and YOLOv5-Block+DeepSort Algorithm

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Computers, Materials & Continua 2024年第11期81卷 3241-3260页

作者： Mingyuan Zhai Hanquan Zhang Le Wang Dong Xiao Zhengmin Gu Zhenni Li College of Information Science and Engineering Northeastern UniversityShenyang110819China Flight Control Department Shenyang Aircraft Design and Research InstituteShenyang110035China Department of Information Center The First Hospital of China Medical UniversityShenyang110001China

In the process of dense vehicles traveling fast,there will be mutual occlusion between vehicles,which will lead to the problem of deterioration of the tracking effect of different vehicles,so this paper proposes a research method of virtual simulation video vehicle target tracking based on you only look once(YOLO)v5s and deep simple online and realtime tracking(DeepSort).Given that the DeepSort algorithm is currently the most effective tracking method,this paper merges the YOLOv5 algorithm with the DeepSort *** it adds the efficient channel attention networks(ECA-Net)focusing mechanism at the back for the cross-stage partial bottleneck with 3 convolutions(C3)modules about the YOLOv5 backbone network and before the up-sampling of the Neck feature *** YOLOv5 algorithm adopts expected intersection over union(EIOU)instead of complete intersection over union(CIOU)as the loss function of the target frame *** improved YOLOv5 algorithm is named *** experimental results show that in the special vehicle target detection(TD)and tracking in the virtual simulation environment,The YOLOv5-Block algorithm has an average accuracy(AP)of 99.5%,which significantly improves the target recognition correctness for typical occlusion cases,and is 1.48 times better than the baseline *** the virtual simulation video sequence test,multiple objects tracking accuracy(MOTA)and various objects tracking precision(MOTP)improved by 10.7 and 1.75 percentage points,respectively,and the number of vehicle target identity document(ID)switches *** with recent mainstream vehicle detection and tracking models,the YOLOv5-Block+Deepsort algorithm can accurately and continuously complete the detection and tracking tasks of special vehicle targets in different scenes.

关键词： YOLOv5 DeepSort virtual simulation attention mechanism

An Analysis and Design of the virtual simulation Software Based on Pattern

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The Journal of China Universities of Posts and Telecommunications 2002年第2期9卷 36-44页

作者： ZHANGYing SUNZhi-xin 等 TheManagementandHumanitiesInstitute BeijingUniversityofPostsandTelecommunicationsBejing100876P.RChina DepartmentofComputerScienceandTechnology NanjingUniversityofPostsandTel

The paper makes a detailed analysis and design of the Vega application software based on Windows NT platform. It includes object oriented software analysis and design, design patterns and Windows kernel mechanism. The paper brings forward a design pattern, a fence pattern, and depends on this pattern. Windows NT memory mapped files adopted, the paper presents a Vega application solution based on the multi process technique. Although the design solution is developing under a real time simulation system, it is established at the clear analysis of the Vega system, therefore, the solution has extensive practicability and many uses.

关键词： design pattern virtual simulation objected oriented file mapping object

Innovation Practices of virtual simulation Teaching Method in Landscape Architecture Majors

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Journal of Landscape Research 2014年第4期6卷 44-46页

作者： CAI Luxiang Ningbo Dahongying University

Based on foreign and domestic literature about teaching theories and simulation application,advantages and disadvantages of simulation teaching and other teaching methods were compared,organization forms and efficiency of simulation teaching in network environment discussed,students' learning patterns and styles summarized,and the theoretical research foundation for the simulation teaching and students' learning system in network environment *** problems of simulation teaching and corresponding students' learning styles were discussed,application and supervision system of simulation teaching established,students' learning styles *** and innovations of virtual simulation teaching in simulation teaching of landscape architecture were given,and the research framework sorted out as reference.

关键词： virtual simulation Teaching method Innovation practice

Research on the Dual-Creation Talent Training Model of New Energy Automobile Based on virtual simulation

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Journal of Contemporary Educational Research 2024年第4期8卷 236-240页

作者： Yanrui Qu Syaza Hazwani Zaini Faculty of Education Universiti Pendidikan Sultan Idris35900 Tanjong MalimPerakMalaysia Changchun Technical University of Automobile Changchun 130013Jilin ProvinceChina

At present,as China vigorously develops new energy automobiles,the social demand for related talents has increased significantly,so the relevant institutions need to optimize and adjust the talent training mode to help the development of new energy *** paper summarizes the existing problems of China’s new energy automobile talent training mode,and analyzes the significance of the virtual simulation-based dual-creation talent training mode of new energy automobile and its specific implementation strategies,in order to provide references for the relevant personnel.

关键词： virtual simulation New energy automobile Dual-creation Talent training

Application Research of Medical Imaging Practical Teaching Based on virtual simulation Teaching Platform

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Journal of Contemporary Educational Research 2023年第5期7卷 33-38页

作者： Yong Zhou Wenbo Jing Cheng Zhou Yingying Yu Xiaojing Gan Xiaoyan Xu The 3rd Affiliated Teaching Hospital of Xinjiang Medical University(Affiliated Cancer Hospital) Urumchi 830011Xinjiang Uygur Autonomous RegionChina

Objective:To explore the application effect of virtual simulation teaching platform in the practical teaching of medical ***:A total of 97 students majoring in medical imaging technology of class 2022 were selected and divided into two groups according to the random number method:control group(n=48)and observation group(n=49).The observation group was under the practical teaching mode based on the virtual simulation teaching platform,while the control group was under the traditional multimedia teaching *** survey and teaching assessment were carried out after the teaching period,and the application effects of the two teaching modes were ***:The reading and theoretical scores of the students in the observation group were significantly higher than those of the students in the control group(Pvirtual simulation platform not only helps improve students’theoretical understanding and practical ability in medical imaging technology,but also improves students’learning interest,language expression ability,ability to comprehensively analyze problems,communication skills,teamwork awareness,and satisfaction with the teaching content,teaching methods,and teaching ***,it has wide application value in medical specialty education.

关键词： Medical imaging virtual simulation Practical teaching Problem-oriented

Model test vs virtual simulation of a VLCC FPSO hookup

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Journal of Marine Science and Application 2009年第2期8卷 137-143页

作者：郝军孙玉柱吴子全 Alan WANG 海洋石油工程股份有限公司天津300452

This paper describes the model test and the virtual simulation respectively for the VLCC class FPSO hookup, as well as addresses their different applications to the mating operation between the FPSO and the soft yoke mooring system （SYMS） in extremely shallow water. The scope of the model test and the virtual simulation covers various installation stages including a series of positioning trials, positioning keeping and temporary mooring to the pre-installed SYMS mooring tower, pendulum mating, and yoke ballasting to storm-safe. The model test is to accurately verify bollard pull capacity to keep the FPSO in position and assess motion responses and mooring loads for the FPSO and installation vessels during various installation stages. The virtual simulation is to provide a virtual-reality environment, thus realistically replicating the hookup operation at the simulation Test Center （STC） facility and identifying any deficiencies in key installation personnel, execution plan, or operation procedures. The methodologies of the model test and the virtual simulation addressed here can be easily extended to the deepwater applications such as positioning and installation operations of various floating systems.

关键词： FPSO SYMS model test virtual simulation

Results of the virtual simulation teaching method on autonomous learning competencies of undergraduate nursing students

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Nursing Communications 2024年第1期8卷 1-7页

作者： Yinji Jin Meiying Li Xue Wang Xin Jin School of Nursing Yanbian UniversityYanji 133002China Department of Ultrasound Yanbian University HospitalYanji 133099China

Background:With the continuous development of information technology,most universities use mobile teaching platforms for classroom *** the help of the national virtual simulation experimental teaching project sharing platform,students can enhance self-directed learning through the virtual simulation operations of the ***:To explore the application of virtual simulation experiment in teaching the fundamentals of nursing practice based on the Platform of the National virtual simulation Experiment Teaching Project during the COVID-19 pandemic analyze the impact of this teaching method on the autonomous learning ability of undergraduate nursing ***:Convenience sampling was used to select 121 nursing undergraduates from Y University’s School of Nursing;the online teaching of fundamentals of nursing practice was conducted to the *** taking the course,questionnaires were distributed to the undergraduate nursing students to collect their perceptions regarding the use of the virtual simulation experiment platform and autonomous learning ***:Most students expressed their preference for the virtual simulation teaching platform,and their satisfaction with the project evaluation was high 83.05%.They hoped to promote the application in future experimental *** nursing students believed that the virtual simulation teaching platform was conducive to cultivating clinical thinking ability,could stimulate learning interest,enhanced autonomous learning ***:During the pandemic,the virtual simulation teaching platform for a lecture on in nursing education has achieved good results in both the aspects of teaching and student *** efficiently used their training time and reduced their teaching ***,the laboratory cost was also *** undergraduate nursing students,the system was conducive to cultivating clinical thinking ability,stimulating their interest in lea

关键词： COVID-19 autonomous learning nursing education virtual simulation nursing students