Creating Web-based Laboratories - download pdf or read online

By C.C. Ko PhD, Ben M. Chen PhD, Jianping Chen PhD (auth.)

ISBN-10: 1846280885

ISBN-13: 9781846280887

ISBN-10: 1852338377

ISBN-13: 9781852338374

Remote web-based experimentation, allowing scholars and researchers to entry the laboratory each time through the web, is changing into an more and more beautiful technique to supplement or maybe exchange conventional laboratory classes. putting a video digital camera & microphone ahead of the apparatus and gear to catch what's truly occurring within the laboratory permits the photographs and audio information to be streamed to the buyer facet. Researchers in numerous international locations can percentage gear and behavior study cooperatively and remotely. The authors summarise their learn and speak about the improvement of the five web-based laboratories introduced from the nationwide college of Singapore. the foundations, constitution, and applied sciences required for the construction of net distant experimentation platforms are mentioned with specific emphasis at the integration of and software program platforms. additionally highlighted is the layout and improvement of interfaces and parts to be used in common web-based laboratories or comparable web-control applications.

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Instrument panel for the signal generator. 3. 5 Voltmeter The last instrument used in the experiment is a standard remote-controlled voltmeter for measuring the voltage of the VCO on the circuit board. 2 bus. 11. Basically, once the power button is on, the voltage applied to its input will be continuously measured and displayed. 11. Instrument panel for the voltmeter. 1 Java Applet The instrument panels described above are created using Java applets. In general, Java can be used to create either a stand-alone application or an applet [31].

Both static and streaming multimedia supports from any valid URL are provided. JMF players may be controlled by other players to provide synchronous playback of multiple audio and video samples. The choice of ActiveX or JMF depends on the intended application. In the Web-based coupled-tank experiment, Microsoft NetMeeting is employed as the audio/video player and thus ActiveX is chosen as the API. 1. Introduction 19 Web Server The Web server uses LabVIEW to support network communication protocols, such as TCP and UDP, implemented in the form of virtual instruments’ subVIs.

However, before we describe in detail how this can be done for the client GUI in the next two chapters, we will first present here some basic concepts and principles on classes. Under OOP, a class is essentially a template for an object. An example is the common data type integer, or int, which is predefined in Java and practically all other programming languages. When the need arises for a new class to be created, however, the characteristics of the class must be specified. Specifically, a class associated with the display of a button can be defined by using the class keyword along with an appropriate class name, as follows: class imgButton { } Despite having an empty body, these few lines actually create a complete class.

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Creating Web-based Laboratories by C.C. Ko PhD, Ben M. Chen PhD, Jianping Chen PhD (auth.)

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