Drupal is one of the most popular web content management systems and content management frameworks, used to make building web sites more efficient than coding them from scratch. Drupal in particular offers a high degree of flexibility, allowing the web developer or webmaster to build almost any kind of web site, with any kind of functionality or design imaginable. Installing Drupal is not hard, but you do need to have the following ready to start: A web hosting service including a database (typically MySQL), web server (typically Apache), and PHP. Read More

Access Policies Overview Protocol rules and site and content rules determine access policy in ISA Server: Protocol rules define which protocols clients can use to access the Internet. Site and content rules define which sites and content can be accessed. Because no protocol rules are defined and applied when you install ISA Server, traffic will not be able to pass through. Packet filters are used to manage the flow of IP packets to ISA Server and from ISA Server. Packet filtering inspects the header of each packet for protocol, port, Read More

Configuring Linux Mail Server Linux Mail Server The main purpose of the mail server is concerned with to receive and send emails. S Software applications are used to manage incoming of emails from any other server and to forward it to the destination. There are many web hosting services which provide mailing facilities along with web space and the most popular mail server is Linux. The Linux mail server could be used for implementation for real time and there are many optional features, which are offered by the Linux mail Read More

An LNB (Low Noise Block aka LNC- Low Noise Converter) is used for communications (broadcast) satellite reception. The LNB is usually affixed either in or on the satellite dish. The LNB’s purpose is to utilize the super heterodyne effect and amplify and convert a wide block (band) of frequencies. This helps compensate the signal loss associated with typical coaxial cable at relatively high frequencies. The term ‘low noise’ relates to the quality of the 1st stage input amplifier transistor, measured in either called Noise Temperature units, Noise Figure units, or Read More

This tutorial will help you create a three dimensional can in Photoshop. On a new layer draw a shape like this and fill with a gradient: Then on a new layer draw a eliptical shape and give it gausian until you get something like this, then place that below the layer having the main shape: Next, draw a eliptical shape for the top: After that, place an image which will be used as an cover for our can: Then go to Distort –> Spherize and use these settings: Now change Read More

Sempron is a name for AMD's line of lower-cost CPUs. The Sempron line is designed to complete against the Intel Celeron lower-cost CPUs. Sempron CPUs feature a L1 cache with 64KB of memory for data and another 64KB of memory for instructions. The L2 cache on Sempron CPUs operates at the full speed of the CPU and ranges from 128KB to 512KB in size. Sempron CPUs support MMX, 3DNow!, and SSE. Some models of Sempron CPUs also support SSE2. Sempron CPUs are designed to fit Socket-A or Socket-754 CPU sockets.

A metamaterial is artificially designed and its properties are not found in nature. It generally gains its properties through construction rather than its composition. In fact, metamaterials are usually made from extremely interconnected bonds at the  nano level. This allows them to be used in applications that involve manipulating light, sound, vibrations, microwave radiation, or other forms of electromagnetic radiation. Metamaterials also allow an object to be lighter, more durable/flexible, or be more electrically conductive. How Metamaterials Work A metamaterial is generally fabricated at the nano level in a laboratory Read More

TV-GPS is a technology from Rosum Corporation of California. Basically, it is a GPS tracking technology that makes use of television broadcasting signals to intensify or strengthen GPS signals. It is slated for use in urban areas where most people own a television (so the TV broadcasting signals are extremely strong) and where the regular GPS monitoring or tracking is rendered ineffectual because of great interference from electromagnetic noise and obstruction from concrete skyscrapers. Components of a TV-GPS System A TV-GPS system needs a device with a Rosum TV Measurement Read More

In the Windows NT domain model, domains had to be bound together through trust relationships simply because the SAM databases used in those domains could not be joined. What this meant was that where a domain trusted another Windows NT domain, the members of the domain could access network resources located in the other domain. Defining trust relationships between domains eliminates the need for an Administrator to configure user accounts in multiple domains. In a trust relationship, the two domains are referred to as the trusting domain and the trusted Read More

Documenting your Exchange Server 2003 Environment To successfully restore or recover any aspect of your Exchange Server 2003 environment, it is important that you document the following: The Exchange Server 2003 environment. The backup process. The recovery process. A well documented or complete Exchange Server 2003 environment document should include the following information: The Exchange server name. The Windows version and service pack running on your servers. The Exchange version and service pack running on your servers. The Exchange organization name. Site names. Database names and sizes. Database locations. Storage Read More