Wednesday, October 20, 2010
blog 1
1. what were the circumstances that drove the people during that time to developed technologies towards inter-networks?
.- The main reason that drove people toward the internet work technologies is due to the response on meeting the new development for the globalization. And thru this concept, there must be a need for the realization of discovering materials that would improve and transmit the information in a vivid technique like the use of multimedia and its web link. And thru this discovery, this could serve the problem of the new society towards global understanding. Aside from world wide information, this has extended to every individual to be cognizant enough on the facts some other information useful either for private or business purpose as well as on global information understanding.
2. How did the different technologies contribute to the evolution of the modern Internet?
-As for the relation of other discoveries for the development of internet work, this has actually started after the Second World War when the idea of inter-global business corporation was on their growth. Like the creation of ARPANET in 1960’s as funded by the U.S. Department of Defense Advanced Research Projects Agency (ARPA) funded a research project that created a packet switching network known as the ARPANET. ARPA also funded research projects that produced two satellite networks. In the 1970s ARPA was faced with a dilemma: Each of its networks had advantages for some situations, but each network was incompatible with the others. ARPA focused research on ways that networks could be interconnected, and the Internet was envisioned and created to be an interconnection of networks that use TCP/IP protocols. In the early 1980s a group of academic computer scientists formed the Computer Science NETwork, which used TCP/IP protocols. Other government agencies extended the role of TCP/IP by applying it to their networks.
3. If you could change or improve something in the internet and/or its services, what would it be?
-The things to be changed in the use of the internet must have to understand first those services that have no aid for the internet users. The disadvantages of the internet must have to be counted then. Like for instances the use of electronic games that could not promote the mental growth of the users. Another is the show on the porno sites that could induce any users to do subversive things. The E-books also have potential disadvantages, some of which might be addressed as technology improves. These include the cost of the computer or e-book device, consumer resistance to reading on electronic screens, and uncertainty about the business model. Concerns about pricing, royalties, illegal copying of texts and the lack of a single software standard for publishing e-books has slowed the rollout of e-books by major publishing companies. Cyber Crime is another means of internet hacking, it is recommended then to have full security internet service program so that hacking is totally rejected.
.- The main reason that drove people toward the internet work technologies is due to the response on meeting the new development for the globalization. And thru this concept, there must be a need for the realization of discovering materials that would improve and transmit the information in a vivid technique like the use of multimedia and its web link. And thru this discovery, this could serve the problem of the new society towards global understanding. Aside from world wide information, this has extended to every individual to be cognizant enough on the facts some other information useful either for private or business purpose as well as on global information understanding.
2. How did the different technologies contribute to the evolution of the modern Internet?
-As for the relation of other discoveries for the development of internet work, this has actually started after the Second World War when the idea of inter-global business corporation was on their growth. Like the creation of ARPANET in 1960’s as funded by the U.S. Department of Defense Advanced Research Projects Agency (ARPA) funded a research project that created a packet switching network known as the ARPANET. ARPA also funded research projects that produced two satellite networks. In the 1970s ARPA was faced with a dilemma: Each of its networks had advantages for some situations, but each network was incompatible with the others. ARPA focused research on ways that networks could be interconnected, and the Internet was envisioned and created to be an interconnection of networks that use TCP/IP protocols. In the early 1980s a group of academic computer scientists formed the Computer Science NETwork, which used TCP/IP protocols. Other government agencies extended the role of TCP/IP by applying it to their networks.
3. If you could change or improve something in the internet and/or its services, what would it be?
-The things to be changed in the use of the internet must have to understand first those services that have no aid for the internet users. The disadvantages of the internet must have to be counted then. Like for instances the use of electronic games that could not promote the mental growth of the users. Another is the show on the porno sites that could induce any users to do subversive things. The E-books also have potential disadvantages, some of which might be addressed as technology improves. These include the cost of the computer or e-book device, consumer resistance to reading on electronic screens, and uncertainty about the business model. Concerns about pricing, royalties, illegal copying of texts and the lack of a single software standard for publishing e-books has slowed the rollout of e-books by major publishing companies. Cyber Crime is another means of internet hacking, it is recommended then to have full security internet service program so that hacking is totally rejected.
Blog 2
1.The advantages and disadvantages of using search engines
advantages
3.When is it appropriate to use a search engine?
4.When is it appropriate to use a search/subject directory?
5.What is an invisible web or 'Deep Web'?
6.How do you find an invisible web?
The term "invisible web" mainly refers to the vast repository of information that search engines and directories don't have direct access to, like databases.
Simply think "databases" and keep your eyes open. You can find searchable databases containing invisible web pages in the course of routine searching in most general web directories. Of particular value in academic research are:
Use Google and other search engines to locate searchable databases by searching a subject term and the word "database". If the database uses the word database in its own pages, you are likely to find it in Google. The word "database" is also useful in searching a topic in the Google Directory or the Yahoo! directory, because they sometimes use the term to describe searchable databases in their listings.
7.Why are these web pages not available in search engines or object directories?
The data is there only for a short lifetime, and then disappears forever having been received, displayed and discarded just as easily. Only a very minimal amount of specific information is associated with these events, so there is no URL for general access -- meaning the information cannot be captured and searched on the web
advantages
- The indexes of search engines are usually vast, representing significant portions of the Internet, offering a wide variety and quantity of information resources.
- The growing sophistication of search engine software enables us to precisely describe the information that we seek.
- The large number and variety of search engines enriches the Internet, making it at least appear to be organized.
- Regardless of the growing sophistication, many well thought-out search phrases produce list after list of irrelevant web pages. The typical search still requires sifting through dirt to find the gems.
- Using search engines does involve a learning curve. Many beginning Internet users, because of these disadvantages, become discouraged and frustrated.
- A Search Engine has 3 Basic Parts1. Spider (crawler, link finder): a computer program that harvests web links from page to page2. Index: a database that is organized and searchable of the Spider's harvested results3. Search and retrieval mechanism: Software that allows users to search the Index and return results in a predetermined order.But a Search Engine also is commonly used to refer to any software that searches an Index of Words or material types
- A meta-search engine is a search tool that sends user requests to several other search engines and/or databases and aggregates the results into a single list or displays them according to their source. Meta search engines enable users to enter search criteria once and access several search engines simultaneously.
3.When is it appropriate to use a search engine?
- when you are trying to search for the specific words or topic.
4.When is it appropriate to use a search/subject directory?
- when you are trying to search just from general and to specific like searching for concepts or subject categories.
5.What is an invisible web or 'Deep Web'?
- The "invisible web" is what you cannot find using these types of tools.
- The terms invisible web, hidden web, and deep web all refer to the same thing: a massive storehouse of online data that the search engines don't capture. That's because terabytes of information are buried in databases and other research resources. Searchable and accessible online but often ignored by conventional search engines, these resources exist by the thousands. Known in research circles as the invisible, deep, or hidden Web, this buried content is an estimated 500 times larger than the surface Web, which is estimated at over four billion pages. This mass of information represents a potent research resource, no matter what your discipline or interest.
6.How do you find an invisible web?
The term "invisible web" mainly refers to the vast repository of information that search engines and directories don't have direct access to, like databases.
Simply think "databases" and keep your eyes open. You can find searchable databases containing invisible web pages in the course of routine searching in most general web directories. Of particular value in academic research are:
Use Google and other search engines to locate searchable databases by searching a subject term and the word "database". If the database uses the word database in its own pages, you are likely to find it in Google. The word "database" is also useful in searching a topic in the Google Directory or the Yahoo! directory, because they sometimes use the term to describe searchable databases in their listings.
- Examples:
- plane crash database
- languages database
- toxic chemicals database
7.Why are these web pages not available in search engines or object directories?
The data is there only for a short lifetime, and then disappears forever having been received, displayed and discarded just as easily. Only a very minimal amount of specific information is associated with these events, so there is no URL for general access -- meaning the information cannot be captured and searched on the web
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