Современные информационные технологии/ 3. Программное обеспечение

Melnik M., Ponomarenko Y., Lifenko V.

Kazakhstan, Asia

Effectiveness of programming language Java at registration of virtual laboratory

Abstract: This article gives some useful recommendations how to design an educational virtual laboratory using effective tools of computer technology -Java and HTML.

Keywords: virtual laboratory, computer technology, programme.

Introduction: Virtual Laboratory activates the learning process and is becoming more widespread in the education process.

The effective tool for the development of interactive media of educational information is the programming language Java [1,2], in the form of Java- applets for standard HTML- pages. All Java- objects are inserted into the HTML-code with the help of tag <Applet>. Scripting language JavaScript is used to make up control and test questions.

Functional features of programme: Each applet is a small programme that is dynamically loaded from the network as a picture, a sound or animation element. The main feature of applets is that they are the programmes and not ordinary format files for keeping data.

Recommendations: It is very important to follow some rules to design a virtual laboratory.

1. Composition of pages. The development of the programme structure on paper allows us to analyze the development process: what size pictures should be, their location, the amount of text, colours, tables and lists.

 2. HTML- editor selection. HTML- document is the text with special commands - tags. Therefore, it is possible to create a document by text editor, but the extension must be *. html or *. htm. There are many special HTML- editors to build an HTML- code, which can be divided into two groups. The first group editors allow to create an HTML - code with varying degrees of service, and in order to recognize your page you need to load it in your browser. They are HotDog Pro, CoffeeCup, but the most convenient and easiest to use is FrontPage 2003.

 3. Window size of Web- page. Screen size is 1280 * 1024, 1024 * 768, 800 * 600 pixels.

 4. The background. For the background it is possible to use standard colours and background pictures. Often ill- use of background colours and patterns makes the page unreadable. Background color and text color should contrast.

 5. Graphics files in the HTML-code. If you specify the size of the image file, it will speed up the output of the page. The technician tries to plan the position of the text, graphics and tables on the page and does not display images until it determines its size.

6. Total amount of Web- page. You need to add HTML- code sizes and the sizes of each image. The total size should not exceed 150 Kb, but it's better if it is in the range of 50-70 Kb. Loading of a page should not exceed 1 minute.

7. Font selection. <font face="arial"> text </font> The browser will determine the specified font, determine whether it is installed on a user's computer or not. If not it will reproduce the text, using the standard font. You can specify a list of fonts, the browser will look for the order of these fonts. Font type should match the design of the page.

8. Graphics used on Web- page.

9. Good style and design of Web- page means:

- - to withstand the style: header format, footers, backgrounds;

- the material must be meaningful;

- all links should be working;

- page should be updated, supplemented.

Conclusion: If you follow the recommendations it will help ensure the development of quality software, effectively used in the educational process.

References

1. Нотон П. JAVA: Справ.руководство(Club Computer):Пер.с англ./Под ред. А.Тихонова.-:БИНОМ: Восточ. Кн. Компания,1996:Восточ.Кн. Компания.-447с.

2. Патрик Нотон, Герберт Шилдт. Полный справочник по Java.-McGraw-Hill,1997, Издательство "Диалектика",1997