On the Morphological Perception and Virtual Experience of Digital Signage in Spatial Orientation Design

In space-oriented design,the guide logo is often combined with the overall visual style and spatial positioning of the space design through the designer’s whims.With the development of digital technology and the application of artificial intelligence,the practice of designers is reflected in the integration of digital information into media content and physical objects.Digital-oriented identity from touch,voice to eye sensing;static and dynamic conversion of multi-dimensional presentation,real to virtual possibilities are expanded,so that people experiencing in space can produce a variety of morphological perception and virtual immersion experience.

Construction and Practice of First-Class Courses on Virtual Simulation Experimental Teaching of Urban Overpasses

Virtual simulation experiment,as a new way to promote the digital transformation of education,has a broad development prospect and application value.The civil engineering experimental volume and space are huge,it has a long construction period,is highly dangerous,and is difficult to experiment with.In order to solve the contradiction between the traditional theory teaching of civil engineering and the engineering training of students,the construction of virtual simulation experimental teaching courses with a high degree of realism,intuition,and accuracy can be used as a useful supplement and innovation of experimental and practical teaching.This paper takes the virtual simulation experimental teaching course of urban overpasses as an example,introduces the necessity and practicability of the course construction,and describes the experimental principle structure of the course,the simulation scene design,the experimental teaching process,the experimental method,etc.The course has achieved good application results,and it has been recognized as the first-class virtual simulation teaching course of the Chongqing Municipal Government,which provides certain references to the construction of the same type of courses in the civil engineering profession.

Thermal perception method of virtual chemistry experiments

Background With the aim of addressing the difficulty in identifying temperatures in virtual chemistry experiments,we propose a temperature-sensing simulation method of virtual chemistry experiments.Methods We construct a virtual chemistry experiment temperature simulation platform,based on which a wearable temperature generation device is developed.The typical middle school virtual experiments of concentrated sulfuric acid dilution and ammonium nitrate dissolution are conducted to verify the actual effect of the device.Results The platform is capable to indicate near real-world experimental situations.The performance of the device not only meets the temperature sensing characteristics of human skin,but also matches the temperature change of virtual chemistry experiments in real-time.Conclusions It is demonstrated that this temperature-sensing simulation method can represent exothermic or endothermic chemistry experiments,which is beneficial for students to gain understanding of the principles of thermal energy transformation in chemical reactions,thus avoiding the danger that may be posed in the course of traditional teaching of chemistry experiments effectively.Although this method does not have a convenient enough operation for users,the immersion of virtual chemical experiments can be enhanced.

A virtual experiment showing single particle motion on a linearly vibrating screen-deck

A virtual sieving experimental simulation system was built using physical simulation principles.The effects of vibration frequency and amplitude,the inclination angle of the screen-deck and the vibration direction angle of screen on single particle kinematics were predicted.Properties such as the average velocity and the average throw height were studied.The results show that the amplitude and the angle of vibration have a great effect on particle average velocity and average height.The vibration frequency and the screen-deck inclination angle appear to have little influence on these responses.For materials that are difficult to screen the vibration frequency and amplitude,the screen-deck inclination angle and the vibration angle should be set to 14 Hz,6.6 mm,6° and 40°,respectively,to obtain optimal particle kinematics.A screening process can be simulated reliably by means of a virtual experiment and these results provide references for both screening theory research and sieving practice.

Effects of different poses and wind speeds on flow field of dish solar concentrator based on virtual wind tunnel experiment with constant wind

In order to improve structure performance of the dish solar concentrator,a three-dimensional model of dish solar concentrator was established based on the high-precision numerical algorithms.And a virtual wind tunnel experiment with constant wind is adopted to investigate the pressure distribution of the reflective surface,velocity distribution of the fluid domain for the dish solar concentrator in different poses and wind speeds distribution.Some results about wind pressure distribution before and after dish solar concentrator surface and wind load velocity distribution in the entire fluid domain had been obtained.In particular,it is necessary to point out that the stiffness at the center of the dish solar concentrator should be relatively raised.The results can provide a theoretical basis for the improvement of solar concentrator dish structure as well as the failure analysis of dish solar concentrator in engineering practice.

Virtual&augmented reality for biological microscope in experiment education

Background Mixed-reality technologies,including virtual reality(VR)and augmented reality(AR),are considered to be promising potential tools for science teaching and learning processes that could foster positive emotions,motivate autonomous learning,and improve learning outcomes.Methods In this study,a technology-aided biological microscope learning system based on VR/AR is presented.The structure of the microscope is described in a detailed three-dimensional(3D)model,each component being represented with their topological interrelationships and associations among them being established.The interactive behavior of the model was specified,and a standard operating guide was compiled.The motion control of components was simulated based on collision detection.Combined with immersive VR equipment and AR technology,we developed a virtual microscope subsystem and a mobile virtual microscope guidance system.Results The system consisted of a VR subsystem and an AR subsystem.The focus of the VR subsystem was to simulate operating the microscope and associated interactive behaviors that allowed users to observe and operate the components of the 3D microscope model by means of natural interactions in an immersive scenario.The AR subsystem allowed participants to use a mobile terminal that took a picture of a microscope from a textbook and then displayed the structure and functions of the instrument,as well as the relevant operating guidance.This flexibly allowed students to use the system before or after class without time and space constraints.The system allowed users to switch between the VR and AR subsystems.Conclusions The system is useful for helping learners(especially K-12 students)to recognize a microscope's structure and grasp the required operational skills by simulating operations using an interactive process.In the future,such technology-assisted education would be a successful learning platform in an open learning space.

Virtual simulation experiment of the design and manufacture of a beer bottle-defect detection system

Background Machine learning-based beer bottle-defect detection is a complex technology that runs automatically;however,it consumes considerable memory,is expensive,and poses a certain danger when training novice operators.Moreover,some topics are difficult to learn from experimental lectures,such as digital image processing and computer vision.However,virtual simulation experiments have been widely used to good effect within education.A virtual simulation of the design and manufacture of a beer bottle-defect detection system will not only help the students to increase their image-processing knowledge,but also improve their ability to solve complex engineering problems and design complex systems.Methods The hardware models for the experiment(camera,light source,conveyor belt,power supply,manipulator,and computer)were built using the 3DS MAX modeling and animation software.The Unreal Engine 4(UE4)game engine was utilized to build a virtual design room,design the interactive operations,and simulate the system operation.Results The results showed that the virtual-simulation system received much better experimental feedback,which facilitated the design and manufacture of a beer bottle-defect detection system.The specialized functions of the functional modules in the detection system,including a basic experimental operation menu,power switch,image shooting,image processing,and manipulator grasping,allowed students(or virtual designers)to easily build a detection system by retrieving basic models from the model library,and creating the beer-bottle transportation,image shooting,image processing,defect detection,and defective-product removal.The virtual simulation experiment was completed with image processing as the main body.Conclusions By mainly focusing on bottle mouth defect detection,the detection system dedicates more attention to the user and the task.With more detailed tasks available,the virtual system will eventually yield much better results as a training tool for image processing education.In addition,a novel visual perception-thinking pedagogical framework enables better comprehension than the traditional lecture-tutorial style.

Virtual Simulation Experiment Design under the Guidance of Emotional Design Theory

In recent years, virtual simulation experiments have been widely used in education. However, at present, academic research on virtual simulation experiments mostly focuses on key technologies, and there are few emotional studies on virtual experiments. Based on the three-layer model of emotional design theory, this paper puts forward the method strategy of emotional simulation design in virtual simulation experiment, in order to provide some reference value for the design of virtual simulation experiment.

Reflections on the Experience of Network Virtual Space FromPhenomenology of Technics

People create network virtual space that is completely different from the real space through network information technologies.The characteristics of network virtual space are that the subject can obtain a similar real space experience.From the perspective of phenomenology of technics,in order to analyze the virtual space of the network,it is necessary to clear the phenomenological concepts,such as space,space experience,and virtual space experience,so as to know the type of network virtual space experience,explore the essential characteristics,and find solutions to the ethical conflicts in the virtual space experience of the network.

Research on the Teaching Model of Experimental Virtualization in Digital Logic and Digital System Design Course

By stating the problems faced by the experiment of digital logic design course in traditional laboratory, the necessity of hardware experiment virtualization is analyzed, and then two virtual experiment methods are introduced. The pilot implementation of remote virtual experimental platform and virtual component library shows that the virtualization of hardware experiment can effectively break the time and space limitation of traditional hardware experiment, and improves the learning enthusiasm and autonomy of students, which is worth further promoted.

Virtual Simulation Experiment Teaching Platform Based on 3R-4A Computer System

Virtual simulation experiment teaching gradually becomes the trend of the computer-related education practice.Through analyzing the problems existed in current computer experiment teaching,this paper proposes the idea of building virtual simulation experiment platform based on 3R-4A computer system and clarifies the design technology,including frame,characteristic and innovation,resource sharing and management,condition protection and so on.

Virtual Experimental Project Design in the Digital Signal Processing Course

This paper proposes the design and development of virtual experimental projects in the Digital Signal Processing course,using MATLAB,Proteus,and CCS platforms to develop a library of typical experimental cases for biomedical engineering majors and discusses the design process.Based on these typical cases,this paper explores the secondary design for innovative engineering practice case teaching,which can promote students’understanding and mastery of digital signal processing theories,algorithms,and technologies in an intuitive,flexible,and efficient way;quickly build new innovative engineering case models and further cultivate students’engineering application ability as well as innovative thinking.

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.

从Immersion到Flow experience:“沉浸式传播”的再认识

虚拟现实技术的进步使沉浸式传播成为新的研究焦点,“沉浸”对应着Immersion和Flow experience两个英文术语,术语混用体现着两种研究取向,也意味着一种新的研究趋势。图景构建带来的感官沉浸是沉浸传播的初级阶段,而基于各种媒介手段实现的意识沉浸则是沉浸传播的发展方向,对沉浸问题的研究最终会在用户认知研究形成新的跨学科研究交点。媒介世界与真实世界之间的边界问题是沉浸式传播需要解决的关键问题,虚拟现实技术和注意力强化是消除边界的两大方式。艺术手法、拟像技术、综合互动、意义内爆是沉浸传播形成的前提,构建泛在网络、运用交互叙事手法、积极探索受众差异、合理地使用虚拟现实技术进行传播,是实现沉浸式传播的重要方法。

Virtualbox在软路由实验中的应用

介绍了通过构建Virtualbox虚拟机实验平台进行路由实验的方法,使得原本要在复杂网络环境下才能做的软路由实验可在单机环境下实现。

光学实验的VirtualLab设计仿真研究

仿真模拟软件的使用在光学研究中具有非常重要的意义.本文介绍了最新的光学建模与分析软件Virtual Lab,通过其在光学理论和实验中的应用举例,模拟了单缝衍射现象,迈克耳逊干涉仪实验装置和双折射晶体产生的偏振现象,并探讨了该软件在设计型实验中的应用.

基于VirtualBox的RAID虚拟化实验平台

根据高校实验室的需求,提出了一种基于VirtualBox的windows2003软件RAID虚拟化实验平台。为解决了频繁读写对物理磁盘可能造成损耗的问题,引进了将虚拟磁盘文件设置到Ramdisk所创建的内存盘中的方法。本文还对RAID1和RAID5和IO速率和容错性进行对比和验证。通过该实验平台,RAID实验能够在普通的PC计算机中进行,大大降低实验成本,对理解RAID技术的概念和进行相关实验具有很好的示范作用。

使用VirtualBox和Hadoop搭建云计算虚拟实验平台

本文从节约实验成本的角度出发,探讨了在设备不足的情况下搭建云计算实验平台的问题.介绍了一种在单机环境下使用VirtualBox和Hadoop搭建云计算虚拟实验平台的方法,并给出了详细的实现步骤.对搭建好的虚拟实验平台进行了测试,测试结果表明该实验平台在充分利用现有资源的前提下,能满足云计算相关课程实验教学的基本要求.

用Virtual PC组建虚拟实验环境

提出了使用虚拟机的原因,介绍其优点、安装VirtualPC系统的需求和方法及用Ghost工具组建虚拟网络的过程。

基于VirtualBox的DHCP服务器仿真实验平台的设计与实现

在Linux课程教学过程中,往往由于现有实验条件限制,导致许多实验无法进行。以DHCP服务器实验为例,利用Virtual Box虚拟软件创建两台虚拟机,一台DHCP服务器,一台Client机。DHCP服务器为Client机分配动态IP,实际测试运行无误。利用Virtual Box虚拟软件搭建仿真实验平台,较好地解决了实验场地或者实验设备不足导致的实验实训教学无法正常开展的问题。