Engineering Concepts Tutorials

Engineering Concepts Tutorials for UML, Operations Research, Numerical Methods and many more.
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It might happen that your hard disk died on you, or the DVD backup you had does not read correctly. Generally, CD & DVD media retain data correctly for a few years (or more, depending on the quality of the media), after which data loss starts slowly with read errors increasing from the outer tracks...
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The term Web services describe a standardized way of integrating Web-based applications. Web services technology represents an important way for businesses to communicate with each other and with clients as well. It is a truly distributed computing model in which applications talk to one another....
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Introduction Pocket Pc is a handheld sized computer.It runs on Microsoft windows mobile operating systems.It may have capability to run on alternative operating system like NetBSD,Linux,Android (or) others.It has many of the capability of modern desktop PC Pocket PC is an evolution from...
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GCM or Google Cloud Messaging is a service for developers to send notifications from remote servers to their Android apps or Chrome extensions, the notification may be sent anytime irrespective of the Android device being online or not, the notification will be delivered when the device comes...
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ADSL (Asymmetrical Digital Subscriber Line) - A means of delivering high communication speeds over existing copper phone lines. Analog - The technology used by the original mobile phones. Like traditional radio broadcasts, phone conversations and information are transmitted in the form of a...
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Public Key Infrastructure Public key infrastructure is an architecture which supports mechanisms like integrity and confidentiality. It is heavily used in e-commerce, where business transactions are frequent and should be much secured. In fact business transaction starts only after the two...
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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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HAProxy stands for High Availability Proxy, is an open-source TCP/HTTP load balancer. In case you are new to the idea of a load balancer, the work of a load balancer is to distribute incoming requests to an array of upstream servers so as no single upstream server is overworked/overloaded by...
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A set of processes is deadlocked if each process in the set is waiting for an event that can be caused by another process in the set. The events that we are mainly concerned with are resource acquisition and release. The resources may be physical resources (CPU, I/O devices, memory) or logical...
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In this article we will explore the two main choices of graphic format that can be used on the Web to represent simple graphics, schemas or logos: · GIF (stands for Graphics Interchange Format) was developed in the late 1980's and it is still widely used. · PNG (Portable Network Graphics) was...
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The article continues the discussion on Algorithms available in Symmetric Key cryptography. It explains the whereabouts of DES algorithm. Due to the limitations of DES on security context, we shall include Triple DES in the scope. Triple DES is a stronger form of DES algorithm. Understanding...
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This is known to all that AMD is the only one competitor of Intel’s market. In this “Dual-Core” era of CPU’s AMD is going to launch their APU or Accelerated Processing Unit in this year. Not only AMD Intel is also working with this architecture and hopefully they will also release their new...
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Advanced Encryption Standard is a block cipher symmetric encryption algorithm. It is preferred to protect network communications, personal data etc using AES over DES. It encrypts or decrypts the data through several rounds. Categorization It is categorized under three types of key sizes –...
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Direct Attached Storage (DAS) Today, greater than 95% of all computer storage devices such as disk drives, disk arrays and RAID systems are directly attached to a client computer through various adapters with standardized software protocols such as SCSI, Fibre Channel and others. This type of...
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Have you ever wondered why e-mail attachments are encoded? Well read ahead tro find the answer to this. Internet e-mail and Usenet news posts were designed for plain text messages. As such, many systems expect the messages to only contain printable characters from the 7-bit (first bit of the...
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Q: What are the seven layers of the OSI model? A: The layers are physical, data link, network, transport, session, presentation, and application layers. Q: In the TCP client-servel model, how does the three-way handshake work in opening connection? A: The client first sends a...
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APNS or Apple Push Notification Service, is service for Apple devices like iPhone, iPad & iPod to send 3rd party notifications to devices. It was launched with iOS version 3.0, it's very helpful for the app developers as they do not have to frequently poll for updates, instead they can submit the...
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All software developers must have used some VCS (Version Control System) at a point of their career, most would say SVN, which is currently the widely used VCS in the software industry. Enter Git, created by Linus Torvalds in response to missing features & performance issues in the other VCSs,...
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Lossless Encoding is a method of encoding that allows no loss of data while converting to and from encoded data to normal data. Lossless Audio Encoding Q: Why special encoding methods for audio? A : Lossless encoding is not only done in audio, video etc. We actually have a ton of genric...
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Analytics and its tools have been very well received by bigger corporations in the recent past. This technical term has gained a lot of importance in the technology world. Corporations such as Google, Facebook are investing heavily to create a unique platform to do big data analysis. This analysis...
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