Engineering Concepts Tutorials

Engineering Concepts Tutorials for UML, Operations Research, Numerical Methods and many more.
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Instead of defining what is design pattern lets define what we mean by design and what we mean by pattern. According to me design is blue print or sketch of something so it can be defined as creation of something in mind. Moving to pattern, we can define it as guideline, or something that repeats....
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A Server is a computer or device on a network that manages network resources. For example, a file server is a computer and storage device dedicated to storing files Any user on the network can store files on the server. A print server is a computer that manages one or more printers and a network...
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Are You Invisible Online? It's true that your IP address is no secret. It's a basic part of internet communication protocols to send your IP address whenever you connect to another site, request a web page, chat, play an online game, etc. Without your IP address, the computer on the other...
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What is MD5 or MD5sum? Its a formula - a way to take a message of an arbitrary length, and create a 128-bit "fingerprint" or "message digest" of the message. MD5 is a way to verify data integrity. On these forums, it comes up fairly often in discussions about storing user passwords and other...
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Hi All ! we all use browsers, different kinds of browsers, to surf the internet. But do we know what makes a browser work ? How do a browser come to know that when to show which color or when to show which kind of style of text ? We can say we give instructions by using HTML or DHTML or...
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Introduction and background Computer viruses tend to grab our attention. On the one hand, viruses show us how vulnerable we are. A properly engineered virus can have an amazing effect on the worldwide Internet. On the other hand, they show how sophisticated and interconnected human beings have...
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Introduction The way we make phone calls is changing. In fact in many circumstances things have already changed. Take long distance calls for instance, many service providers are already using a technology called Voice Over IP or VOIP for short. If you have never heard of VOIP before, then the...
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We found it necessary to devote a chapter to Trojans. Trojan's are probably the most compromising of all types of attacks. Trojans are being released by the hundreds every week, each more cleverly designed that the other. We all know the story of the Trojan horse probably the greatest strategic...
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Although they are not directly executable as programs, the many DLL files present in Windows contain libraries of functions that are used throughout the operating system and in application software. Generally, these functions are used internally by programs and are not directly visible to the...
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Introduction Now-a-days mobiles are the signal of our presence! If we switched off our cell phone then we will be de-touched from the world! Now if such a important thing is affected by a virus or stopped working then? My purpose of writing this article is to let you know about some back...
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Introduction Just imagine, At the end of a busy day, you are sitting on the sofa and you need a hot cup of tea… You just thought for a cup of tea, and it step to you! Don’t think me a mad or I’m not joking! This impossible thing can be possible by the help of BMI or Brain Machine Interfacing...
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The Web has become the most significant technology of the 21st century. The nature and structure of the Web, as well as the way we use it, have been continuously changing. The Web evolution is huge that we have started to place the evolution—past, current, and anticipated—into different stages as...
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In the early days of computers, memories were small & expensive. In those days the programmer spent a lot of time trying to squeeze programs into the tiny memory. Often it was necessary to use an algorithm that ran a great deal slower than another, better algorithm simply because the better...
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Introduction Fuzzy systems is an alternative to traditional notions of set membership and logic that has its origins in ancient Greek philosophy, and applications at the leading edge of Artificial Intelligence. Yet, despite its long-standing origins, it is a relatively new field, and as such...
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Introduction Artificial Intelligence (AI) is a broad field, and means different things to different people. It is concerned with getting computers to do tasks that require human intelligence. However, having said that, there are many tasks which we might reasonably think require intelligence -...
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DoS Attack DoS stand for denial-of-service attack, a type of attack on a network that is designed to bring the network to its knees by flooding it with useless traffic. DDoS Attack DDoS stands for Distributed Denial of Service. It is an attack where multiple...
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What is Blu-ray? Blu-ray, also known as Blu-ray Disc (BD) is the name of a next-generation optical disc format. The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data. The format offers more than five times...
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Digital certificates are files which are used to prove the authenticity of the user or computer to whom it is issued. It is very similar to an identification proof like passport, driving license or PAN, which gives assurance to the other party that the transaction of information from the...
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Introduction A VLAN is a grouping of computers that is logically segmented by functions, project teams, or applications without regard to the physical location of users. For example, several end stations might be grouped as a department, such as Engineering or Accounting, having the same...
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Define the Multicore Computing As software developers we have enjoyed a long trend of consistent performance improvement from processor technology. In fact, for the last 20 years processor performance has consistently doubled about every two years or so. But, day by day the truth is realizing...
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