Chemical simulation teaching system based on virtual reality and gesture interaction

Background Most existing chemical experiment teaching systems lack solid immersive experiences,making it difficult to engage students.To address these challenges,we propose a chemical simulation teaching system based on virtual reality and gesture interaction.Methods The parameters of the models were obtained through actual investigation,whereby Blender and 3DS MAX were used to model and import these parameters into a physics engine.By establishing an interface for the physics engine,gesture interaction hardware,and virtual reality(VR)helmet,a highly realistic chemical experiment environment was created.Using code script logic,particle systems,as well as other systems,chemical phenomena were simulated.Furthermore,we created an online teaching platform using streaming media and databases to address the problems of distance teaching.Results The proposed system was evaluated against two mainstream products in the market.In the experiments,the proposed system outperformed the other products in terms of fidelity and practicality.Conclusions The proposed system which offers realistic simulations and practicability,can help improve the high school chemistry experimental education.

Virtual reality tools for training in gastrointestinal endoscopy:A systematic review

BACKGROUND Virtual reality(VR)has emerged as an innovative technology in endoscopy training,providing a simulated environment that closely resembles real-life scenarios and offering trainees a valuable platform to acquire and enhance their endoscopic skills.This systematic review will critically evaluate the effectiveness and feasibility of VR-based training compared to traditional methods.AIM To evaluate the effectiveness and feasibility of VR-based training compared to traditional methods.By examining the current state of the field,this review seeks to identify gaps,challenges,and opportunities for further research and implementation of VR in endoscopic training.METHODS The study is a systematic review,following the guidelines for reporting systematic reviews set out by the PRISMA statement.A comprehensive search command was designed and implemented and run in September 2023 to identify relevant studies available,from electronic databases such as PubMed,Scopus,Cochrane,and Google Scholar.The results were systematically reviewed.RESULTS Sixteen articles were included in the final analysis.The total number of participants was 523.Five studies focused on both upper endoscopy and colonoscopy training,two on upper endoscopy training only,eight on colonoscopy training only,and one on sigmoidoscopy training only.Gastrointestinal Mentor virtual endoscopy simulator was commonly used.Fifteen reported positive results,indicating that VR-based training was feasible and acceptable for endoscopy learners.VR technology helped the trainees enhance their skills in manipulating the endoscope,reducing the procedure time or increasing the technical accuracy,in VR scenarios and real patients.Some studies show that the patient discomfort level decreased significantly.However,some studies show there were no significant differences in patient discomfort and pain scores between VR group and other groups.CONCLUSION VR training is effective for endoscopy training.There are several well-designed randomized controlled trials with large sample sizes,proving the potential of this innovative tool.Thus,VR should be more widely adopted in endoscopy training.Furthermore,combining VR training with conventional methods could be a promising approach that should be implemented in training.

The Simulation of Grinding Wheels and Ground Surface Roughness Based on Virtual Reality Technology

The paper describes the feasibility and method of the application of virtual reality technology to grinding process, and introduces the modeling method of object entity in the environment of virtual reality. The simulation process of grinding wheels and ground surface roughness is discussed, and the computation program system of numerical simulation is compiled with Visual C++ programming language. At the same time, the three-dimensional simulation models of grinding wheels and ground surface roughness are made with OpenGL tool. The choice of grinding wheels, the forecast of ground surface quality and some simulation results can be realized by interactively inputting grinding parameters. The paper applies virtual reality technology to grinding process,makes the model of virtual grinding wheel and simulates the grinding process. The roughness of ground surface is showed in three-dimensional images, and therefore the grinding technology is studied. Computer simulation can not only be used as a shortcut to analyze and research the grinding process, but also increase the research scope and content. The virtual reality technology used in the paper is an advanced visualized simulation with interaction. The surface roughness Ra on simulated ground workpiece can be calculated by the arithmetic average of contour warp absolute value in sampling length of simulated ground workpiece. The parameters of virtual wheel and simulated grinding process can be changed by interaction input, so the simulated results in the desired grinding condition are gained. The effect of each parameter to ground surface can be analyzed by comparing the grinding results in different condition.

Three-dimensional visualization and virtual reality simulation role in hepatic surgery:Further research warranted

Artificial intelligence(AI)is the study of algorithms that enable machines to analyze and execute cognitive activities including problem solving,object and word recognition,reduce the inevitable errors to improve the diagnostic accuracy,and decision-making.Hepatobiliary procedures are technically complex and the use of AI in perioperative management can improve patient outcomes as discussed below.Three-dimensional(3D)reconstruction of images obtained via ultrasound,computed tomography scan or magnetic resonance imaging,can help surgeons better visualize the surgical sites with added depth perception.Preoperative 3D planning is associated with lesser operative time and intraoperative complications.Also,a more accurate assessment is noted,which leads to fewer operative complications.Images can be converted into physical models with 3D printing technology,which can be of educational value to students and trainees.3D images can be combined to provide 3D visualization,which is used for preoperative navigation,allowing for more precise localization of tumors and vessels.Nevertheless,AI enables surgeons to provide better,personalized care for each patient.

Digital earth, Virtual Reality and urban seismic disaster simulation

US Vice President Al Gore's vision of Digital Earth applies us with prospects for brand-new ways of solving problems the earth is facing such as seismic disaster. ms paper first briefly introduces the concept of Digital Earth. Then in the context of Digital Earth. the Origin, concept and application of Virtual Reality technology are reviewed. After that we present in detail our preliminary case study--CVR-USD (Computer Virtual Reality for Urban Seismic Disaster Simulation) System which aims to simulate and manage seismic disaster through integrating RS, GIS and VR technologies. For this system, we've built USD subsystem, developed SMVR software to implement CVR. and also developed a Spatial Dare Analysis Package to handle spatial data related to earthquake disaster.

Virtual reality simulation in training endoscopic skills: A systematic review

Objective:Training young physicians in gastrointestinal endoscopy through virtual reality(VR)simulators has become popular.It is important to evaluate the benefits and usefulness of this technology for teaching endoscopic skills.The objective of this literature review is to understand the benefits of VR technology through quantitative and qualitative examination of learning outcomes.Methods:A literature search of 7 databases was conducted.Studies which compared the effects of learning through VR simulation and another method of learning were included.In addition,studies were included if they evaluated learning outcomes on clinical patients.Participants could be medical residents,fellows,physicians,or nurses.Common outcomes measured across studies included subjective overall performance scores,total procedure times,rate of successful procedure completion,error rates,patient pain or discomfort,and measures of independence.Results:A total of 22 studies were included.Overall,VR simulation training was seen to be comparable or significantly better than clinical training,no training,other types of simulation,and another form of VR training.Many authors reported increasing patient safety,reducing stress and time constraints,and shortening the learning curve as advantages of VR simulation training.However,this form of training is also expensive and may result in the learning of bad habits.Conclusion:VR simulation technology can be a valuable form of educating endoscopy novices if properly supervised during training,and if there is also integration of clinical training.

Virtual Reality Driving Simulation for Measuring Driver Behavior and Characteristics

This article provides new insights regarding driver behavior, techniques and adaptability. This study has been done because: 1) driving a vehicle is critical and one of the most common daily tasks;2) simulators are used for the purpose of training and researching driver behavior and characteristics;3) the article addresses driver experience by involving new virtual reality technologies. A simulator has been used to assist novice drivers to learn how to drive in a very safe environment, and researching and collecting data for researchers has become easier due to this secure and user-friendly environment. The theoretical framework of this driving simulation has been designed by using the Unity3D game engine (5.4.f3 version) and was programmed with the C# programming language. To make the driving environment more realistic we, in addition, utilized the HTC Vive Virtual reality headset which is powered by Steamvr. We used Unity Game Engine to design our scenarios and maps because by doing this we are able to be more flexible with designing. In this study, we asked 10 people ranging from ages 19 - 37 to participate in this experiment. Four Japanese divers and six non-Japanese drivers engaged in this study, some of which do not have a driver’s license in Japan. A few Japanese drivers have a license and car, while others have a license but no car. In order to analyze the results of this experiment we are used MatlabR2016b to analyze the gathered data. The result of this research indicates that individual’s behavior and characteristics such as controlling the speed, remaining calm and relaxed when driving, driving at appropriate speeds depending on changes in road structures and etc. can affect their driving performance.

Virtual Reality and Visual Simulation Technology in Platform Construction with Four Bucket Foundations Based on Secondary Development of Vega

The platform with bucket foundations can penetrate and migrate by underpressure/positive pressure technique caused by pumping water out/in the bucket. However, the construction process of bucket foundations cannot be clearly observed and effectively controlled due to the special nature of sea environment. By using an advanced simulation development tool of Multigen Creator, the visual construction simulation program for the platform with bucket foundations was developed to set up the virtual reality system with interaction control and observation in every view angle based on the secondary development technology of Vega platform. The application results show that the method is feasible and effective by simulating the whole construction process for the platform with four bucket foundations.

The Effectiveness of Virtual Reality-Based Simulation in Health Professions Education Relating to Mental Illness: A Literature Review

The proliferation of Virtual Reality-based tools has led to its increased usage in the field of education over the last decades owing to its increasingly realistic simulation and greater control over the 3D simulated environment. The unique features of Virtual Reality (VR) simulation can provide learners with a hazard-free simulated environment allowing limitless failure attempts. Yet, good quality research to verify the effectiveness of VR simulation in training students of the health profession is still lacking. This literature review focuses on the effectiveness of virtual reality-based simulation in enhancing health profession students’ empathetic attitude relating to mental illness. Four databases were searched from January 1, 2007 to December 31, 2018. Of 1034 articles identified eligible in the databases, a total of 6 articles have met the criteria for inclusion in this review. Findings suggested that there is a clear relationship between VR simulation and an improvement on users’ empathy, attitudes, and knowledge relating to mental Illness. With the unique characteristic of experiential learning of VR simulation, there is a potential development of the VR simulation on empathy and attitude in healthcare education. Also, VR stimulation is found having a larger impact on the users’ empathy of users with a healthcare background compared to those without. Future studies should include more in-depth examination on the effect on the specificity of empathy and attitude of people with healthcare background, and in teaching a wider range of mental illnesses such as depression and general anxiety disorder.

VR技术在船舶分段装配实训教学中的应用

VR技术与传统教学的融合是现阶段教育教学的一个发展趋势。基于当前VR技术在实训教学中的现状,探讨VR技术在船舶分段装配仿真实训教学中的作用和意义,并具体分析了VR技术在船舶分段装配实训教学中的应用。通过调查分析证明了VR技术在船舶分段装配仿真实训教学中的应用效果,最后提出推进VR技术在船舶分段装配仿真实训教学中的具体操作建议。

基于VR技术的危化品物流虚拟仿真实验体系设计与实践研究——以N学院为例

危化品物流对安全措施有着高等级的要求,其一线场地和设施无法面向师生开放。应用型高校将虚拟现实技术应用于危化品物流实践教学中,可解决安全壁垒问题、提高实验设施的投资效益、激发学生的学习兴趣、鼓励学生参与创新实践并拓宽社会培训路径。文章立足于宁波舟山港和石化园区对危化品物流的现实需求,系统地分析了应用型高校建设危化品物流虚拟仿真实验教学体系的设计思路与实践内容,在功能上满足了专业实验、创新研究、学科竞赛、社会培训等多元化需求,既满足了高素质应用型人才的培养要求,也为类似高校实验体系的构建提供了参考。

VR技术在计算机虚拟仿真系统设计中的应用

计算机虚拟仿真系统是当代多个专业教育教学工作中的重点,若能将VR技术应用其中,则可构建起更加真实的虚拟仿真实验环境,以提升教学效果,发挥VR技术的应用价值。文中分析了VR技术在计算机虚拟仿真系统设计中的应用,旨在优化计算机虚拟仿真系统的设计工作,提升相关专业的教学效果,以供参考。

Exploring the use of virtual reality in surgical education

Virtual reality(VR)technologies have rapidly developed in the past few years.The most common application of the technology,apart from gaming,is for educational purposes.In the field of healthcare,VR technologies have been applied in several areas.Among them is surgical education.With the use of VR,surgical pathways along with the training of surgical skills can be explored safely,in a cost-effective manner.The aim of this mini-review was to explore the use of VR in surgical education and in the 3D reconstruction of internal organs and viable surgical pathways.Finally,based on the outcomes of the included studies,an ecosystem for the implementation of surgical training was proposed.

基于Plant Simulation的航空用柔性制造系统仿真优化

针对航空发动机柔性制造单元,利用Plant Simulation仿真软件建立了制造单元设备模型,使用实际数据设置参数,分析制造单元布局、产量、设备利用率和缓存库位等生产信息。实际仿真结果表明,单元布局得到了合理优化,产量可达到优化前的2倍,模型能够准确分析出各制造单元是否存在瓶颈工序,同时分析缓存库位,给出库位需求。此外,运用D-H法建立机器人运动模型,对制造单元内机器人的几何运动开展路径优化和干涉分析等虚拟运动仿真,并建立人体模型及动作设置,开展了人机工程分析。上述仿真优化实际应用到航空用环形件柔性制造系统关键环节的设计中,缩短了航空柔性制造系统工程设计研发周期、降低成本、减小建设及生产安全风险。

An operation optimization method of a fully mechanized coal mining face based on semi-physical virtual simulation

A mathematical hydraulic support self-tracking model for three-machine cooperative mining is proposed to address low efficiency and difficulties in strategy evaluation of a fully mechanized coal face.The proposed model uses the coordinates and traction speed of the shearer to calculate the frequency of the circular hydraulic support and realize the coordinated operation of the three-machine mining technology.A unity3d hardware-in-the-loop simulation experimental hearer and hydraulic support platform was used to validate the model of autonomous follow-up.The results indicate that collaborative control of coal mining allowed for an efficiency 3.76%higher than under automatic operation mode and 46.03%higher than under manual control;thus,The mathematical model provided an improved production efficiency of the fully mechanized mining face.The mathematical model also provides a more intelligent and reliable security support,and improves the intelligent level of hydraulic support follow-up control.

Five Degree of Freedom Manipulator Motion Simulation Based on Virtual Environment

In order to achieve the five degree of freedom manipulator motion simulation based on virtual reality environments, the calculation of the manipulator motion path of the joint node, established the mathematical models and three dimensional models, completed five degree of freedom manipulator real-time interactive simulation study based on the EON Studio platform, finished the experimental simulation of mechanical arm motion path. Provide some theoretical basis for the multiple degrees of freedom, multi-channel input and multiple perception mechanical movement of virtual interactive simulation-based research in the EON environment.

5G与VR技术融合的机舱火灾应变平台开发

为开展船舶大型CO_(2)灭火系统、机舱灭火操作的训练,以集美大学教学实习船“育德”轮(载重吨6.4万t)为仿真对象,采用B/S架构,融合5G与虚拟现实(VR)技术优势,运用3DMax建模软件仿真“育德”轮大型CO_(2)灭火系统及机舱火灾场景,开发了船舶机舱火灾应急应变虚拟仿真平台。经2年多的教学实践情况,证实了该平台的适用性和成效性。

基于VR技术的工业机器人操作技能训练虚拟仿真教学系统设计

利用虚拟现实技术可以提高技术工人的工业机器人系统操作的职业技能培训效率,利用虚拟现实技术能够对机器人操作的运动轨迹进行模拟。对基于VR技术的工业机器人操作系统虚拟仿真训练系统设计进行了探讨,首先利用3D软件进行建模、并在Unity 3D软件中进行技能训练虚拟场景的搭建,模拟真实的机器人配置。充分利用VR技术特点,为学习者提供多感官沉浸式体验的训练系统,可以提升技能训练的学习效率,显著地降低现有培训的时间和经济成本。

基于VR和AR技术的核应急医学救援仿真平台设计与实现

目的:针对现实中核事故情景难模拟、现场医学救治训练逼真度不高、训练组织难等问题,设计一种核应急医学救援仿真平台。方法:该平台基于虚拟现实(virtual reality,VR)、增强现实(augmented reality,AR)、空间定位、全身动作捕捉、手势模拟和三维建模等技术构建,通过Unity3D平台、3D Studio Max软件开发,采用Visual Studio编程,主要由硬件系统和软件系统组成。硬件系统主要包括AR训练设备和VR训练设备,其中,AR训练设备包括表面污染检测仪模拟器、单兵洗消器模拟器、AR眼镜等,VR训练设备包括VR眼镜、大空间定位设备、背负式计算机、数据手套、全身动作捕捉设备等。软件系统主要包括理论知识教学、理论知识考核、VR/AR实践教学训练、VR/AR考核评估等模块。结果:采用该系统可实现核事故医学应急仿真协同训练,并可以有效开展考核和评估。结论:该平台解决了核应急医学救援教学及训练组织和实施困难的现实问题,有效提高了教学及训练质量。

A Study of Virtual Museum Simulation Platform Based on 2.5D Architectural Modeling Technology

With the application of virtual reality technology to realize interactive display of virtual museum as content of study,we analyze the problems in the current virtual museum system.Taking Daqing Museum for example,we develop a 2.5D(between 2D and 3D) architectural modeling technology,and combine it with virtual reality technology,to create the virtual museum simulation platform.By establishing the virtual simulation platform of Daqing Museum,we verify the feasibility of using 2.5D architectural modeling technology to build the virtual museum system,create a virtual simulation platform with practical value,and show the bright future of virtual museum based on 2.5D virtual reality technology.