Searching  Web search engines get their information by web crawling from site to site. The "spider" checks for the standard filename robots. Due to infinite websites, spider traps, spam, and other exigencies of the real web, crawlers instead apply a crawl policy to determine when the crawling of a site should be deemed sufficient. Some sites are crawled exhaustively, while others are crawled only partially".
Introduction A Web application is any application that uses a Web browser as a client. The application can be as simple as a message board or a guest sign-in book on a website or as complex as a word processor or a spreadsheet.
A Web application relieves the developer of the responsibility of building a client for a specific type of computer or a specific operating system.
They can even be using Internet Explorer or Firefox, though some applications require a specific browser. The client-side script deals with the presentation of the information while the server-side script deals with all the hard stuff like storing and retrieving the information.
Internet mail is an example of this, with companies like Yahoo and MSN offering Web-based email clients. The new push for Web applications is crossing the line into those applications that do not normally need a server to store the information.
Web applications can provide the same functionality and gain the benefit of working across multiple platforms. If you have seen the new Gmail or Yahoo mail clients, you have seen how sophisticated Web applications have become in the past few years.
Much of that sophistication is because of AJAX, which is a programming model for creating more responsive Web applications. Today, it is a key platform for news and entertainment, e-commerce, research, communication and collaboration USC The importance of the usability of the related user interfaces can hardly be overestimated.
And yet, an important factor is omitted when content, structure and experience are designed and evaluated on the Web:An analysis of the history of technology shows that technological change is exponential, contrary to the common-sense intuitive linear view.
So we won't experience years of progress in the 21st century -- it will be more like 20, years of progress (at today's rate). The returns, such as chip speed and cost-effectiveness, also increase exponentially.
Sep 27, · A RESEARCH PROJECT MATERIAL ON COMPUTER SCIENCE EDUCATIONA Web application is any application the user could be using an IBM-compatible or a Mac. They can be running Windows XP or Windows Vista. They can even be using Internet Web applications commonly use a combination of server-side script (ASP, PHP, etc) and client-side .
The Talks of DEF CON Speaker Index. 0 0xb A Nathan Adams Agent X Alex Thiago Alves Nils Amiet Ruo Ando. October In the Q & A period after a recent talk, someone asked what made startups fail. After standing there gaping for a few seconds I realized this was kind of a trick question. This paper provides quantitative data that, in many cases, open source software / free software is equal to or superior to their proprietary competition.
The paper examines market share, reliability, performance, scalability, scaleability, security, and total cost of ownership; it also comments on non-quantitative issues and unnecessary fears.
The Psychology of Security. I just posted a long essay (pdf available here) on my website, exploring how psychology can help explain the difference between the feeling of security and the reality of security..
We make security trade-offs, large and small, every day. We make them when we decide to lock our doors in the morning, when we choose our driving route, and when we decide whether we're.