Seeking a Chinese and English literature about the network virtual laboratory, it is necessary to

Seeking a Chinese and English literature about the online virtual laboratory, to be Chinese and English, thank you
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  1. There may be errors in the papers, but there may not be a lot.

    With the continuous development of computers and network technology, network virtual laboratories have been applied more and more. With the computer, the of network, network virtual to be more and more. A few issues should be paid attention to during the development of the virtual laboratory. Introced the basic of virtual and its , the of virtual four key : Java, ActiveX, VRML, ASP, the last of the process of virtual should pay attention to several problems. 关键词虚拟实验室远程教育现代教育技术迅速崛起的现代Education technology introduces virtual experiments into experimental teaching. KEY WORDS VIRTUAL of Modern Ecrational Distance Ecity the Rapid Rise of the Modern Ecrational Into the Virtual Teaching. The application of virtual experiments has changed the traditional educational model and has revolutionized teaching and learning methods. Of virtual to change the mode of ecation and technology and lead, it is very rich in computer virtual experiments for experimental teaching, coupled condition. At present, for the teaching of computer software, rich virtual , together with the computer and network resources for the creation of virtual to provide the necessary basic . 通过网络虚拟实验室,能够通过计算机在网络中模拟一些实验现象,它不仅It can only improve the effectiveness of experimental teaching. What is more important is that some students who lack experimental conditions can also observe the experimental phenomenon through the network and even cooperate with students in different places to experiment. Through the network of virtual labs, through computer in the network a number of phenomena, it is not only to improve the of teaching, and more , the lack of on some of the students, through the network to feel the same phenomena observed, students In different plants and eve-. 1 of the of virtual network and the network is in the web virtual to create a visual, a of each of thesects on behalf of an object. The user can perform virtual experiments. Throud Mouse Clicks and Drag and Drop Operation, Users Can Conct Virtual. The basis for the realization of network virtual experiments is the combination of multimedia computer technology and network technology. Network Virtual is base on the of multi-media computer and network. Whether it is a student or a teacher, you can enter the virtual laboratory to operate instruments freely at any time for various experiments. WHether Students or Teachers, are free and without to operate at any time to enter the virtual applicationus, to carry out various. Reform and teaching for the procession of distribution and technical support. , But their practice realizes virtual laboratories from different levels. Many at home and abroad to engage in work in practice, the also proposed the concept of such: Digital Lab, MBL (Micro-computer Based Lab), although these terms are not uniform, but they practice at different levels from a virtual Room. 1.1 MBL Chemical Laboratory of Ana State University in India. The laboratory This laboratory uses computers to help do some things for new students to do some things. Experimental guidance materials. 1.1 of the Indiana State chemical of the MBL chemistry to open new classes to help with the computer do something with computer and analysis of data, using computer show that in the relevant online guidance material. 1.2 芝加哥伊利诺伊大学数字化有机化学实验室该实验The room makes full use of network resources to provide a series of experimental teaching guidance online: online experimental teaching materials; experimental teaching schedule; experimental evaluation methods, forms, time; virtual experiments; links of related teaching resources, etc. 1.2 of Illinois at Chicago, the number of the of organic chemistry lab full use of network resources, the Internet has provided a series of teaching guide: online materials; teaching timetable; of methods, forms, time; virtual ; related to teaching Links and Other Resources. They also used computers to conduct academic teaching management. They Also with Computer Teaching Ecational. 1.3 Laap (Learn Anytime Anywhere Physics), a Corolina State University, used Java technology to establish a web exploration virtual physics laboratory, mainly the following modules: virtual experiments based on Java Applet Equipment and experimental facilities; related experimental curriculum modules; evaluation modules of experimental learning results; collaborative learning modules. 1.3 Carolina State LAAP (Learn Anytime Anywhere Physics) using Java to build Web-based virtual physics to explore, mainly in the following moles: Java Applet based virtual equipment and ; related An course mole; study and the results of the mole; learning mole The biggest advantage of virtual laboratory is low cost and high efficiency. Virtual biggest Advantage is low, because "software is an instrument", this can solve the physical experiments that cannot be issued due to insufficient experimental expenses or high -end equipment lacks, and will not cause improper use. Instrument damage and component loss caused by poor management and other factors. Because "software is the ," and this could be the lack of funds resulting from the or high-grade, high-priced equipment can not be opened by the lack of physical , but also will not lead to a result of improper use caused by Super Factors as poor of equipment damage, missing and so on. Virtual experiments can also simulate the devices not in the laboratory, and it can also be easily experimented without time and space restrictions. At the ame time, Virtual Can not simulating the equipment, but also can be exempted from the of time and spher to easy out such. Extension), high interaction, real -time information feedback. In Addition, The Virtual Should Also Have Some Basic Features: The Coherence and Reality (or An Extension of Reality), Highly, Real-Time Feedback. Systems, experimental teaching guidance systems, network experimental simulation, etc. are a powerful online operation system. 2 Network of Virtual Virtual Should be a Set of Virtual System for Teaching, Teaching Guidance Systems, Network and so on into a powerful operating system online. Between the various parts of each Other, only with related environment. To develop a virtual environment, the realization of experimental simulation should be the core part of the virtual laboratory construction. The of a virtual, the of is a virtual should be the core of the build. FIGURE 1 is a virtual system structure. 3 Constructing key technologies for network virtual laboratories in China. At present, domestic virtual laboratory studies are still in the budding stage. Many universities have conducted this study in foreign countries. 3 Build A Network of Key of Virtual Virtual Current Research IS Still in ITS Infancy, Many Abroad Have Carried Out Studies in this area. The widely used network programming language, it is a new computing concept. Summing up their use of, we can see that the majority can be divled into the followIn: 3.1 java is a widly use java web laanguage, it is a new computing confpt. For the structure of the machine, the transplantable, safety, and the concurrent mechanism, it has high performance. First of all, as a language, it is simple, is not dependent on the structure of the machine with, security, and process a mechanism for, high. ) It can run on the Internet without restrictions on CPU and environment. Secondly, to maximize the use of its network, Java Applets for (Applet) can be run on the network with cpu and the. System, which is also very critical for building an online virtual laboratory system. In addition, Java also provides a rich class library, so that process designers can easily build their own systems, this point for building a virtual system is also very crucial. 3.2 ActiveX控件ActiveX技术允许不同软件开发的组件在网络上可以互相Operate. 3.2 Activex Controls Activex Allows Different Software On the Network Can Operate with Each Other. AC? 鄄 Tivex uses Microsoft's component object technology to make local components communicate with components on the Internet. Code reuse, that is, in the development process of virtual laboratories, a experimental instrument can be reused in multiple experimental environments, which is particularly important for the continuous development process. Ac? Juan tiveX use of Component Object enables local and network can be of the , the of the use of ActiveX Another advantage is that it is code reuse, that is to say in a virtual process, an device which can be the in a number Of re-user, this is important in the process of. This technology allows a large engineering project to be divided into small components, which is equivalent to simply complex projects into one-one-part part and complete each component part After integration, you can get the final project. This enables a large project can be divided into small , it is to the of the project as a simple component, was completed after each component can be into the final project. 可以开发ActiveX组件的环境有很多,其中开发效率最高和最Easy to get started is Visual Ba? 鄄 SIC. Activex can be depended a Lot of in which to develop the most effect and most. 3.3 VRML is vRML Virtual Reality Modeling Language (Virtual Reality Modeling Language) the Short Title. It is described in a virtual of a state, but also the internet to the key of virtual reality. VRML's basic characteristics include distributed, interactive, platform -irrelevant, three -dimensional integration, realistic nature, etc. The second -generation web "has been valued by more and more people. The Basic Feature of VRML, Including, Platform-, Three-, Multi-Media, LIFE-LIKE Nature, WAS A "Second-Web", has ben more and more people, Approve it as an international standard. For in January 1998 APPROVED As Standards. VRML is a modeling language. Its basic goal is to build an interactive three -dimensional multi -media on Internet, that is, it is used to describe three -dimensional objects and its behavior, which can build a virtual realm. VRML is a modeling language, its basic goal is to establish a three- Internet, , in other words, it is used to describe the three- objects and their behavior, you can build a virtual realm. 用VRML实现与Internet虚拟现实交互There are several benefits below: the visual management of media expression, the visual management of collaborative work roles, improved the user interface of the coordinated environment, and enhanced the interaction of the coordinated environment. With the Internet using VRML virtual reality has the following : rich media , the role of the visual work of , to improve the of the user interface, enhanced . 可见,将VRML融合到网上虚拟实验室的开发过程中,既可以增强Expressiveness and user acceptance can also achieve a better synergy work virtualized environment. Can be seen that the VRML into the of online virtual process, can enhance and user , but also work together to achieve a better virtual . 3.4 ASP技术ASP(Active Server Pages,动态服务器端网页),内含在Internet Server 3.0及In its above versions, a server -side script environment is provided to generate and execute dynamic and high -efficiency network server applications. 3.4 ASP ASP (Active Server Pages, Dynamic server-side page), including in the Internet Server 3.0 and above versions, to provide a server-side scripting for the and of dynamic and efficient web server . ASP不只是动态的网页,它It is one of the many web applications today, which is responsible for the control part of the entire web application. ASP PAGES Not only dynamic, it is today a large number of web is one of the ways to make, the which is for the entire web control part. ASP provides five built -in objects for users to call, that is, Re? 鄄 Quest objective object (Obtain user information), Response objects (transmit information to users), Server objects (providing methods, attributes to access servers), objects (for multiple users to share information between multiple web pages) and session objects (for a single single for a single single) Users share information between multiple webs). ASP provides a total of five built-in objects for users to call, that is, Re? Juan quest object (to obtain user ), Response object (to send to the user), Server object (the server to provide access methods, ) Object (with in a variety of uters to share between multiple page) and the session object (for indicting use to share between Multiple Pages). It provides great convenience for the development of virtual laboratories. 4 Virtual Network Process Should Pay Attention to Several issues of the of computer software to Today, for the of virtual provides. At present, the necessary system software or tools to support object-Oriented. They all have event-driven support, programming method design methods and multimedia operation technology. They have the support of event-driven news cycle of and skills. Pay attention to the following issues during the development process: the choice of the timing of the event. In the actual operation, it is not immediately reflected. The delayed response needs to be responded. The input signal or other information of the external interface is often a regular trigger or random trigger event. If it is randomly triggered, a random number within a certain time limit can be used to replace the fixed time. In the process should pay attention to the following questions: Event trigger timing, the actual operation of them after a button press does not reflect the need to delay response to the external interface of the input signal or other from time to time is often triggered or Random trigger events, if the random trigger events are available for a ceerain period of time the random number to reply the fixed time. Event lock relationship or dynamic sequential relationship can be stored in a database table to modify it conveniently. Between Events or Dynamic Order Can Be Stored in a DataBase Table is Described, Modify. Given the corresponding conditions and control range to automatically form data tables to independent data and programs. Given the, Control, Data Tables, so that an data and proprams. Simulation sound, to make the experiments realize, in addition to simulating the physical scene of the console, the sound of various sounds in their experimental environment, such as the sound of the whistle, the buttons press the movement Sound, internal mechanical action sound, etc. Analog voice, to achieve the realistic , in addition to the physical of the console scene, but also of their sounds in the , such as the whistle sound, the sound button pressed, the internal action, such as sound. 这样,才能使学生In the laboratory, I have a sense of immersive and devoted themselves to learning. In this way can help studers in the arearsive feling, to fully in the state. The results of various actions on the table, the movements of each control on the countertop will trigger certain events. Results of the table a variety of movements, Control the Movements of Each Table Will Trigger a Certain Event. In the physical device, it is completed by mechanical and electronic circuits. Essence Thedese events in the physical devices by, circuits, such as to complete, and now to the between and logic using computer software. Some equipment faults. Fault Generator, in Practance Work in Addition to Equipment Operation Under Normal, there are a variety of, such as the government of some equipment. The situation, etc., add some difficulties to the experiment and strengthen the actual operation ability of students. At this point, the request in a virtual system can also handle failures, signals and do not show the case of natural disasters and so on, that is, to increase the of the , the actual operation to the capacity of students. 5 结束语虚拟Experimental technology has broad applications and development prospects in experimental teaching. With the popularization of virtual experiments, its superiority will be recognized by more and more people. 5 Virtual in Teaching Have Broad, Prospects, with the of virtual, and its will be more and more people are aware of. In addition to having an innovative spirit and ability, there should also be a scientific investment concept. In laboratory construction and development, fully consider investment efficiency and build a modern laboratory. But for the virtual really promote the use of , the key is to change the concept, first of all, the concept of change in teachers, in addition to the spirit of and capacity, there should be a concept of , and in the , the FULL CONSIDER the RETURNS and Building a Modern. Secondly, it is necessary to train a high -quality experimental team, constantly update knowledge, strengthen learning, pay attention to the collection, processing, and application of information, understand the latest technologies, and promote the development of experimental teaching. Second, we must cultatory a high-Quality Team, update their knowledge to enhance lead, of,,, the latest, and promote the of teaching. Change of educational concepts. Of the virtual and, to the and teaching reform, the promotion of ecation to change attitudes. Is to travel jobs of the new tools. Virtual experiments will have an important position in the 21st century experiment teaching, which will undoubtedly play a great role. Virtual Teaching in the 21st Century Will Certainly Occupy An Important Position, Will Play a Role.

  2. Abstract With the continuous development of computers and network technology, more and more applications of network virtual laboratories have been applied. Introduce the basic characteristics of the virtual laboratory and its architecture, and realize the four key technologies of the virtual laboratory: Java, ActiveX, VRML, ASP, and finally discussed several issues that should be paid attention to during the development of the virtual laboratory.
    The keyword virtual laboratory remote education modern education technology

    The rapidly rising modern education technology introduced virtual experiments into experimental teaching. The application of virtual experiments has changed the traditional educational model and has made revolutionary changes in teaching and learning. At present, computer virtual experiments for experimental teaching are very rich, and college computers and network resources have provided necessary basic conditions for the opening of virtual experiments. Through the network virtual laboratory, it can simulate some experimental phenomena in the network through a computer. It can not only improve the experimental teaching effect, but also for some students who lack experimental conditions. Even cooperating with students in different places to experiment.
    1 The development of the network virtual laboratory and its characteristics
    The network virtual experiment is to create a visual environment in the web, each of which a visual object represents an experimental object. Through the click and drag operation of the mouse, users can perform virtual experiments. The basis of network virtual experiments is the combination of multimedia computer technology and network technology. Whether it is a student or a teacher, you can enter the virtual laboratory to operate the instruments freely and in unwillingly to conduct various experiments. Provide conditions and technical support for the teaching reform and remote education of the experimental courses. Many researchers engaged in laboratory work at home and abroad have also put forward such concepts in practice: Digital Lab, MBL (Micro-Computer Based Lab). Although these terms are not uniform, their practice has achieved virtual experiments from different levels. room.
    1.1 MBL Chemical Laboratory of Ana State University in India
    Themine uses computers to help do some things during the opening of chemistry experiments for freshmen. Display experiments and release related experimental guidance materials online. rn1.2 芝加哥伊利诺伊大学数字化有机化学实验室rn 该实验室充分利用网络资源,在网上提供了一系列的实验教学指导:在线实验教材;实验教学时间表;实验测评方法、 Forms, time; virtual experiments; links of related teaching resources, etc. They also use computers to conduct tutorial management of experimental teaching.
    1.3 LAAP (Learn Anytime Anywhere Physics)
    . They used Java technology to establish Web -based exploration virtual physical laboratories, mainly in the following modules: Java Applet -based based on Java Applett Virtual experimental equipment and experimental facilities; related experimental curriculum modules; experimental learning results evaluation module; collaborative learning module.
    The biggest advantage of the virtual laboratory is low cost and high efficiency. Because "the software is an instrument", this can solve the physical experiments that cannot be opened due to insufficient experimental funding or high -end, high -price equipment lack of equipment, and will not cause damage to instruments caused by improper use and poor management and other factors. Component loss and other phenomena. At the same time, virtual experiments can also simulate the equipment in the laboratory, and it can also be performed without time and space restrictions. In addition, the virtual laboratory should also have some basic characteristics: consistency (or reality), highly interactive, and real -time information feedback.
    2 Network virtual laboratory architecture
    The network virtual laboratory should be a powerful online operation system that integrates virtual experimental teaching management system, experimental teaching guidance system, and network experimental simulation. The interrelationships between each part are supplemented with each other, and they are only relatively independent. The development of a virtual environment and the realization of experimental simulation should be the core part of the virtual laboratory construction. Figure 1 is a structural diagram of the virtual laboratory.
    3 Construction of key technologies of the network virtual laboratory
    The research on domestic virtual laboratory is still in the budding stage. Many universities have conducted this study in foreign countries. To sum up the technology they use, we can see that most of them can be divided into the following categories:
    3.1 Java technology
    Java is a widely used network programming language. It is a new computing concept. First of all, as a programming language, it is simple, does not depend on the structure of the machine, has transplantable, safe, and provides a concurrent mechanism and high performance. Secondly, it uses the network to the maximum. Java's small application (Applet) can run on the network without being limited by the CPU and the environment. In addition, Java also provides a wealth of libraries that allow program designers to easily build their own system, which is also very critical for building an online virtual laboratory system.
    3.2 ActiveX control
    Activex technology allows different software development components to operate on the network. AC? I TIVEX uses Microsoft's component object technology to enable local components to communicate with components on the network. Another advantage of using ActiveX development is its code reuse, that is, in the development process of the virtual laboratory A experimental instrument can be reused in multiple experimental environments, which is particularly important for the continuous development process. This technology enables a large engineering project to be divided into small pieces of components, which is equivalent to simply complex projects into components. After each component is completed, the final item can be obtained. There are many environments that can develop ActiveX components. Among them, Visual Ba? 鄄 SIC is the highest efficiency and the easiest to get started.
    3.3 VRML technology
    VRML is the abbreviation of virtual reality description model language. It is a standard describing the scene in the virtual environment, and it is also a key technology that realizes virtual reality on the Internet. The basic characteristics of VRML include distributed, interactive, platform -independent, three -dimensional, multimedia integration, realistic nature, etc., have become "second -generation web", and have been valued by more and more people. The International Standardization Organization formally approved it as an international standard in January 1998. VRML is a modeling language. Its basic goal is to establish an interactive three -dimensional multi -dimensional media on the Internet, that is, it is used to describe three -dimensional objects and its behavior, which can build a virtual realm. The use of VRML to realize the following benefits to interact with the Internet virtual reality: enrich the visual management of media expression, the visual management of collaborative work roles, improve the user interface of the coordinated environment, and enhance the interaction of the coordinated environment. It can be seen that in the development of VRML into the online virtual laboratory, it can not only enhance expressiveness and user acceptance, but also achieve a better synergy work virtualized environment.
    3.4 ASP technology
    ASP (Active Server Pages, dynamic server -side webpage), contains in the Internet Server 3.0 and above versions, provides a server -side script environment for generating and executing dynamics, dynamics, dynamics, dynamics, dynamics, dynamics, and dynamics, High -efficiency network server application. ASP is not just a dynamic webpage, it is one of the many web applications today. It is responsible for the control part of the entire web application. ASP provides five built -in objects for users to call, namely Re? 鄄 Quest object (obtained user information), Response object (transmit information to users), server objects (provided methods, attributes to access servers), objects (for it for access to the server), objects (for it for access to the server) Multiple users share information between multiple web pages) and session objects (for a single user to share information between multiple web pages).
    4 During the development of the network virtual laboratory development process
    C computer software technology has developed to this day, providing great convenience for the development of virtual laboratories. At present, the system software or tools required for development support object -oriented programming. They all have event -driven support, programming method design methods and multimedia operation technology. In the development process, pay attention to the following problems:
    The choice of time to trigger the timing. In the actual operation, one button is not immediately reflected. You need to respond. Event that is triggered or randomly triggered, if it is a random trigger event, it can be replaced by a random number within a certain time limit to replace the fixed time.
    The event locking relationship or dynamic sequential relationship can be stored in a database table described, which is convenient to modify. Given the corresponding conditions and control range, and automatically form data tables to make data and program independent.
    It simulation sounds to make the experiments realize. In addition to simulating the physical scenes of the console, they also need to simulate various sounds in their experimental environment, such as the sound of the whistle, the buttons, the sound of the internal mechanical action. In this way, students can make their feelings in the laboratory and devote themselves to learning.
    The results of various actions on the table, the movements of each control on the table will trigger certain events. These events are completed by mechanical and electronic circuits in physical equipment, and now these mechanical and electronic logic relationships are implemented using computer software.
    The fault generator, in addition to the operation of the device in actual work, there are various accidents, such as the fault of certain equipment. At this time, it is required to simulate the failure of the handle in the virtual system, the instrument signal does not display, and the occurrence of natural disasters, etc., to add some difficulty to the experiment and strengthen the actual operation ability of students.
    5 End language
    5 virtual experiment technology has broad application and development prospects in experimental teaching. With the popularity of virtual experiments, its superiority will be recognized by more and more people. However, in order to make the virtual experimental technology truly promoted and applied, the key is the change of concept. First of all, the change of the concept of the teacher. In addition to the innovative spirit and ability, there should also be a scientific investment concept. Consider investment benefits and build a modern laboratory. Secondly, it is necessary to cultivate a high -quality experimental team, constantly update knowledge, strengthen learning, attach importance to the collection, processing, and application of information, understand the latest technologies, and promote the development of experimental teaching. The application and development of virtual experiments has accelerated the development of laboratory and the reform of the experimental teaching, and promoted the change of educational concepts. It is a new experimental method to cultivate innovative talents.
    It virtual experiments will have an important position in the 21st century experiment teaching, and will undoubtedly play a great role.

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