Getting knowledge over the Internet

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Internet is currently only a learning tool, but at the current pace of development, it will soon become a learner indispensable tools. In fact, not only for learning, for most people, the status of the Internet will be more than today's newspapers, television, become the most important media.

I often encourage some friends, students on the Internet to see, and repeatedly said to them: "The World online is wonderful, go online, to ensure you will not regret!" "Can later I found that I was wrong, some friends on the Internet to play a few days later told me:" This internet is not what you say so wonderful! Spending so much money on the internet is better than buying some books and buying some magazines. "I don't think he has learned how to get knowledge through the Internet, and if you don't have some basic skills, it's easy to lose track of the vast internet ocean," he said. The Internet has this feature, the more you understand it, the more you will find it unfathomable. Let me first talk about how to look up information from the Internet.

(a) How to find information on the Internet

First, the most basic search steps

determine your search concept or intent. Select the keywords and other forms that describe these concepts (synonyms, synonyms, etc.). Decide which search function to use and select the search engine.

is
a simple search or an advanced search? Do you want to use a Boolean operation or a fixed phrase (phrase)? Look at the instructions on the selected search engine home page, often in Help, advanced Search, FAQ (frequently member questions), search tips. This is particularly important. I've asked a lot of people, "have you looked at the instructions of the major search engines?" "More than 80 of the respondents were negative. In fact, it takes about 20 minutes to study these instructions, which can greatly improve your search efficiency, so the time saved is incalculable. Create a search expression and start the search using the correct expression that matches the syntax of the search engine. For example: Books & programming, Novels and Jin Yong, this is the most commonly used form. View search results.


See how many search results are returned? Does it match your expectations? Look at the page or site profile, if necessary, to see how far from your goal? If necessary, revise the search concept, revise the search requirements, and find a more appropriate keyword. Sometimes, although the search results are not ideal, you will find some more appropriate keywords in these pages. Try the same search in other search engines. This step can also be done by a multiple search engine (described below).

Ii. Search Techniques

Although the knowledge of the Internet is all-encompassing, vast, but if you need to look for a very specialized, specific things, often look through the various search engines, or can not find suitable or submerged in a large number of redundant pages. It's a good idea to analyze your search results carefully to make a better search scenario.

If you return very few results, even "no matches were found", "return 0 pages." So：

Check to see if you have typos or grammatical errors in your keywords, or if your search expression is set to a narrower range, for example, some people connect a whole bunch of words with "and" or "+", and the result is rarely. Then you need to remove some of these join symbols. Think of any other words you can use? You can add some synonyms and connect with "or".

If you return a lot of results, thousands, and many of the results have nothing to do with the topic you need, you need to:

Limit your search to specific areas as much as possible. For example: In Yahoo Chinese, you are looking for computer-related knowledge, then you do not need to let search engines in leisure and sports, health and medicine, art and humanities and other categories to find. You can enter the "Computer and Internet" category, select "Retrieve the site under this directory." And then start the search. Use more specific words, such as "costume" instead of "dress", and "Rose" without "flower". Add restrictive words with and or not. For example: (game and computer) not terris. Use a fixed phrase (phrase), which is a word with a fixed collocation. In general, just add the double quotes in English before and after the phrase. such as "Tomb Raider" or "Michael Jackson", so that the search engine will only find the phrase with this fixed collocation. But note that if you search for "electronic music", then the general search engine will ignore "electronic jazz music." Delete as many synonyms or synonyms as possible.

* Evaluate online information

There are many more information on the Internet, but not all of the information has value. Because any person, any unit may publish the information on the Internet, so, this kind of information is a considerable part of the so-called "spam." So, when we get information over the Internet, we have to identify what information is useful, trustworthy, what information should be critically accepted and what information should be discarded completely.

Below is a brief description of the basic techniques for evaluating online information:

1. Find the author's name, organization name or company name from the top or bottom of the page

If it is a personal page, then whether there is an author's profile, to see his education level, position, affiliation, etc. if it is an organization or company, whether there is a detailed introduction page, its history? What is the purpose of publishing this information? Have you ever heard of these individuals or units? Are you familiar with it? Credibility is bad good? This will help you to interpret the trustworthiness of the content of the page.

For example: Chinabyte, from its homepage is very easy to find "about this site" This button, which has a history of Chinabyte, under the channel, related editing and contact methods. If you have any questions about which channel you have, you can send an email or phone to your editor. The regularity of chinabyte operation is reflected in every small aspect. Such a formal website, the content of its credibility will certainly be relatively large.

2. From the URL can get some clues to the site. For example: all with "~" symbol is mostly personal homepage. From the suffix of the domain name can also get some clues:

Edu is an educational web site that may be a serious academic study or a student-made homepage
. gov or. Gov.cn is a government website, generally more authoritative and reliable, and will not publish inaccurate information at random.
. com or. com.cn is the most common commercial website. When you introduce your product, you tend to exaggerate it, so be aware of the critical acceptance
. NET Network services company, providing services for business or individual users
ORG is generally a non-profit organization whose views may be biased.

3. Click on the homepage of the site to see the relevant information of the Organization. If the page does not go to the homepage of the link, you can directly access the domain name front of the address, which is often the homepage of the site. such as: http://www.chinabyte.com/staticpages/builder/builder_schedule/asp.html This large list of URLs, you only need to address the "/staticpages" After all the letters are deleted, leaving only http://www.chinabyte.com, and then hit enter, often can see the home page of the site.

4. Use the search engine to check out other information about the organization or individual

5. Use Deja News or other tools to find out whether the organization or individual has published other articles or other people's evaluation of them.

6. View the last updated date of the page from the top or bottom of the page. If you can't find it, in Netscape, you can press the right mouse button, click "View Info" or select "View" ==> "Page info" in the top menu, press the right mouse button in IE, click "Properties" or select "File" in the top menu. => "Properties" to see the date the page was last updated.

Content on the Internet is very easy to expire, for example, you want to know the statistics of Chinese Internet users, the results of a search to find a statistical data, very happy, finally found, and then a look at the date, the original is three or four years ago. If you cite such data, it's easy to make jokes. For example, you want to buy a camera, want to find out what models of products available to choose from, some of the products introduced by the site is already discontinued products, you want to buy can not buy, you say such information there is no practical value to speak?

I think from the above you can basically determine the credibility of some information on the Internet. This ability to judge and evaluate can only be gradually cultivated in the process of practice, a variety of pages, a variety of web sites to see more, natural ability to distinguish the stronger, practice makes perfect.

　

(ii) Online Learning Essentials Site

Online dictionaries and dictionaries

1. Single dictionary: This kind of dictionary is different from the traditional paper as the carrier dictionary, the new vocabulary of the online dictionary is more, the new vocabulary increases faster, often can find some quite new vocabulary. For example, many new words on the Internet can be found in such dictionaries. This is the traditional dictionary can not match, because the general dictionary to the revision must at least wait for a yinianbanzai. The vocabulary of online dictionaries is added at any time. But this kind of dictionary also has a disadvantage, is the pronunciation of the word is often not too easy to express, for example, Webster online dictionary is using a set of special characters to express the pronunciation of words, it seems inconvenient, but I believe that with the development of technology, this problem can be solved.

merriam-webster online:http://www.m-w.com chinabyte Technical Dictionary: http://dictionary.chinabyte.com techencyclopedia:http ://www.techweb.com/encyclopedia/webopedia:http://www.pcwebopaedia.com/

2. Compound, multi-in-one dictionary: the most typical is "Onelook". The dictionaries themselves do not explain the vocabulary, but instead focus on the various lexical explanations, which link the words you are looking for to the corresponding dictionary site. I believe it is enough for the average person to have this kind of English dictionary. It has a very wide coverage, including computers, technology, medicine, art ... And many other fields. When you look up a word, for example, it lists all the links in the dictionary that explain the word, so you can see the explanation directly with the mouse. You will often find that the same word has different meanings in various fields.

Second, search engine

1. Single Search engine

Foreign：

yahoo:http://www.yahoo.com altavista:http://www.altavista.com excite:http://www.excite.com

Domestic：

Yahoo Chinese: http://www.yahoo.com.cn Search: http://www.cseek.com Sohu: http://www.sohu.com.cn yeah:http://www.yeah.net sina:http://search.sina.com.cn

2. Multi-Search engine

Multi-search technology is in the development stage, although there are many multiple search engines, but very complete but

Not much. Profusion is a very good one in multiple search engines. Profusion: (http://www.profusion.com) is an intelligent search solution, practical hints for queries and personalized search services. Profusion has a range of options and custom conditions that users can find even if they have very vague information. It allows users to select more than one of the best outlets and a number of fastest response points to establish a query that meets their own conditions. And after free registration, profusion will maintain a personal page for users, according to the user's request to select the appropriate search engine.

3. Dedicated Search engine

The most commonly used is FTP or software search engine, such as: Http://www.tucows.com, http://ftpsearch.lycos.com, http://software.chinabyte.com.

There are many other, such as: MP3 search, multimedia search, humor jokes search, children's special search, medical search, music data search, book Search, Product search ...

4. Natural Language Search

The most typical is ask Jeeves (http://www.ask.com). In addition, some other search engines are also beginning to support natural language search, such as AltaVista, Northernlight (http://www.northernlight.com) and so on. This kind of search engine has not been seen in China. You can submit your questions directly to such search engines, such as where can I find 3D software? How do I make pizza? Who's Hillary Clinton? What is the meaning of ...? It lists the questions closest to your problem, then lets you choose, so that the search is more time-saving and straightforward.

The modern life rhythm is more and more fast, the more and more needs the fast-food service, the interface is more friendly, the use more convenient service will be more popular. Natural language search conforms to this trend, it accords with the basic way that people acquire knowledge, so it has strong vitality. With the development of the domestic Internet industry, I believe that similar search engines will soon be found in our country.

Iii. portal Site

Generally speaking, a portal site is often a site that a person often accesses during a certain period of time. People tend to use it as the starting page for browsers.

Yahoo, Excite, MSN, Netscape, search, Sina, NetEase, China Network can be counted as the portal site. Its characteristics are more comprehensive content, often including all kinds of news, search engines, free e-mail, entertainment, sports, shopping, stock quotes and so on, the portal often want to provide people with almost all the commonly used service content.

For the average person, pick a more suitable portal as your browser's starting page. Many portals now offer personalized services tailored to people's needs, for example, let you choose whether to include stock news, sports news, educational news or it news in your starting page, choose which cities to put in weather forecasts, which categories of sites to place, and so on. This makes it easy for everyone to browse the content they are interested in every time they surf the internet.

Four, on-line Exchange class site

This kind of site includes forum, news discussion group, BBS, mail discussion group (mailing List) and so on. Although the technical means is not quite the same, but the actual role of the search is not much, are for users to communicate with each other. There are a lot of such sites, and each has a focus, if you are interested in a certain type of topic, you must be very keen to find some people with common interests with you to communicate, by finding the category you are interested in, it is easy to find such a number of people. However, it's not easy to find the information you really need in a newsgroup. Sites such as Deja News (http://www.dejanews.com), Reference (http://www.reference.com) can play a role in the search for newsgroups. You can find the information you need by typing the keyword. However, these information is very random, a mixed bag, although some of the information is very enlightening, will let you see some very special argument, but sometimes also encounter a lot of one-sided, advertising information, even misleading information. Therefore, you need to use a certain ability to identify.

Some search engines also provide searches for newsgroup information. For example: AltaVista, Excite, HotBot, Infoseek, etc. Liszt (http://www.liszt.com) can help you find an interesting email discussion group. You can even create your own email discussion group, for example, how many of you want to collaborate to develop a software or write a book, then you guys can build a mailing List, and if you have problems with development or want to post a message, you just send an e-mail and everyone else in the group gets it, This is helpful for team members to work together to get the job done. There is an English site called Egroups that specializes in providing this service: http://www.egroups.com/.

Domestic mail magazines are more famous for chinabyte free Mail (http://newsletter.chinabyte.com) and easy Electronic publications (http://www.soim.com/).

V. Educational SITES

This kind of site can be divided into many kinds. For example, universities, libraries, educational testing institutions, online education sites and so on. Each person may according to oneself study the specialty unifies own actual situation to choose the suitable site. Tofel exam: http://www.tofel.com GRE: http://www.gre.org China National Library: http://www.nlc.gov.cn/New Oriental School: http:// www.neworiental.org Chinabyte Network College: http://builder.chinabyte.com University website

In addition, the foreign online education has been quite popular, many universities are offering online education courses, you only need to pay a certain amount of tuition, choose interested majors, through the Internet can complete the course of study. Online education in China is still in its infancy.