Friday, January 20, 2012


WEB HOSTiNG service is a type of Internet hosting service that allows individuals and organizations to make their own website accessible via the World Wide Web. Web hosts are companies that provide space on a server they own or lease for use by their clients as well as providing Internet connectivity, typically in a data center. Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center, called colocation or Housing as it is commonly called in Latin America or France.

The scope of web hosting services varies greatly. The most basic is web page and small-scale file hosting, where files can be uploaded via File Transfer Protocol (FTP) or a Web interface. The files are usually delivered to the Web "as is" or with little processing.[1] Many Internet service providers (ISPs) offer this service free to their subscribers. People can also obtain Web page hosting from other, alternative service providers. Personal web site hosting is typically free, advertisement-sponsored, or inexpensive. Business web site hosting often has a higher expense.
Single page hosting is generally sufficient only for personal web pages. A complex site calls for a more comprehensive package that provides databasesupport and application development platforms (e.g. PHPJavaRuby on RailsColdFusion, and ASP.NET). These facilities allow the customers to write or install scripts for applications like forums and content management. For e-commerceSSL is also highly recommended.
The host may also provide an interface or control panel for managing the Web server and installing scripts as well as other modules and service applications like e-mail. Some hosts specialize in certain software or services (e.g. e-commerce). They are commonly used by larger companies to outsource network infrastructure to a hosting company.

Types of hosting

Internet hosting services can run Web servers.
Many large companies who are not internet service providers also need a computer permanently connected to the web so they can send email, files, etc. to other sites. They may also use the computer as a website host so they can provide details of their goods and services to anyone interested. 
  • Shared web host service: one's website is placed on the same server as many other sites, ranging from a few to hundreds or thousands. Typically, all domains may share a common pool of server resources, such as RAM and the CPU. The features available with this type of service can be quite extensive. A shared website may be hosted with a reseller.
  • Reseller web hosting: allows clients to become web hosts themselves. Resellers could function, for individual domains, under any combination of these listed types of hosting, depending on who they are affiliated with as a reseller. Resellers' accounts may vary tremendously in size: they may have their own virtual dedicated server to a colocated server. Many resellers provide a nearly identical service to their provider's shared hosting plan and provide the technical support themselves.
  • Virtual Dedicated Server: also known as a Virtual Private Server (VPS), divides server resources into virtual servers, where resources can be allocated in a way that does not directly reflect the underlying hardware. VPS will often be allocated resources based on a one server to many VPSs relationship, however virtualisation may be done for a number of reasons, including the ability to move a VPS container between servers. The users may have root access to their own virtual space. Customers are sometimes responsible for patching and maintaining the server.
  • Free web host service: offered by different companies with limited services, sometimes supported by advertisements, and often limited when compared to paid hosting.
  • Clustered hosting: having multiple servers hosting the same content for better resource utilization. Clustered Servers are a perfect solution for high-availability dedicated hosting, or creating a scalable web hosting solution. A cluster may separate web serving from database hosting capability. (Usually Web hosts use Clustered Hosting for their Shared hosting plans, as there are multiple benefits to the mass managing of clients)
  • Grid hosting: this form of distributed hosting is when a server cluster acts like a grid and is composed of multiple nodes.
  • Home server: usually a single machine placed in a private residence can be used to host one or more web sites from a usually consumer-grade broadband connection. These can be purpose-built machines or more commonly old PCs. Some ISPs actively attempt to block home servers by disallowing incoming requests to TCP port 80 of the user's connection and by refusing to provide static IP addresses. A common way to attain a reliable DNS hostname is by creating an account with a dynamic DNS service. A dynamic DNS service will automatically change the IP address that a URLpoints to when the IP address changes.
  • Dedicated hosting service: the user gets his or her own Web server and gains full control over it (user has root access for Linux/administrator access for Windows); however, the user typically does not own the server. Another type of Dedicated hosting is Self-Managed or Unmanaged. This is usually the least expensive for Dedicated plans. The user has full administrative access to the server, which means the client is responsible for the security and maintenance of his own dedicated server.
  • Managed hosting service: the user gets his or her own Web server but is not allowed full control over it (user is denied root access for Linux/administrator access for Windows); however, they are allowed to manage their data via FTP or other remote management tools. The user is disallowed full control so that the provider can guarantee quality of service by not allowing the user to modify the server or potentially create configuration problems. The user typically does not own the server. The server is leased to the client.
  • Colocation web hosting service: similar to the dedicated web hosting service, but the user owns the colo server; the hosting company provides physical space that the server takes up and takes care of the server. This is the most powerful and expensive type of web hosting service. In most cases, the colocation provider may provide little to no support directly for their client's machine, providing only the electrical, Internet access, and storage facilities for the server. In most cases for colo, the client would have his own administrator visit the data center on site to do any hardware upgrades or changes.
  • Cloud Hosting: is a new type of hosting platform that allows customers powerful, scalable and reliable hosting based on clustered load-balanced servers and utility billing. A cloud hosted website may be more reliable than alternatives since other computers in the cloud can compensate when a single piece of hardware goes down. Also, local power disruptions or even natural disasters are less problematic for cloud hosted sites, as cloud hosting is decentralized. Cloud hosting also allows providers to charge users only for resources consumed by the user, rather than a flat fee for the amount the user expects they will use, or a fixed cost upfront hardware investment. Alternatively, the lack of centralization may give users less control on where their data is located which could be a problem for users with data security or privacy concerns.
Some specific types of hosting provided by web host service providers:

host - hosting - server - web host - host - host - hosting - server - web host - host -host - hosting 

Thursday, January 19, 2012



The LimeSurvey is an open source tool, a leader in building online surveys, which is developed in language PHP.
The platform enables the development of surveys, publication and subsequent data collection. Includes a wide range of question types, allows several flexible options and provides an immediate and short statistical analysis of the results drawn from the surveys.
The LimeSurvey also allows the creation of conditional paths (dynamic surveys), export the results tables for various applications such as Microsoft Excel, Word and SPSS and also allows the export structures of the surveys to. CSV and. XML.
Inquiries may be, or not, anonymous and are translated into several languages.

With a choice of room types and templates, you can request a simple questionnaire to compose your own taste. The questionnaire must be public or by invitation only to be filled? The respondent fills in, or do you want data entry by research assistants to do? You make the choices!

course it is impossible to mention all the possibilities without becoming bogged down in an endless list that nobody reads. If you're wondering something is possible or not, you can use the online documentation page, or else contact us via the support section of this site.
Very often it is possible to LimeSurvey and manual administration of the questionnaires sent to your respondents to arrange. If it is not possible for an entire cohort at one time to send a questionnaire is often no longer feasible to send manually. A special monitoring system can help arrange this well. gems Tracker is a kind of tracking system, designed to work with questionnaire systems in particular LimeSurvey. More information about G emsTracker on the special page.
Open source
The department has been making MGZ years to the satisfaction of the program using LimeSurvey. The program is open source, meaning that the source code, and changes that you yourself can do. Because we as a developer on the project are connected, we as programmers contribute our bit to continually improve the program by our adjustments to give back to the community.
If you just want to try how LimeSurvey works, you can use the demo installation .

LimeSurvey basically contains everything you need for doing nearly every survey with grace.

LimeSurvey currently offers:

  • Unlimited number of surveys at the same time
  • Unlimited number of questions in a survey (only limited by your database)
  • Unlimited number of participants to a survey
  • Multi-lingual surveys
  • User-management
  • 28 different question types with more to come
  • WYSIWYG HTML editor
  • Quotas management
  • Integration of pictures and movies into a survey
  • Creation of a printable survey version
  • Conditions for questions depending on earlier answers (Skip Logic / Branching)
  • Re-usable editable answer sets
  • Ready-made importable questions
  • Assessment surveys
  • Anonymous and Not-Anonymous survey
  • Open and closed group of participant surveys
  • Optional public registration for surveys
  • Sending of invitations, reminders and tokens by email
  • Option for participants to buffer answers to continue survey at a later time
  • Cookie or session based surveys
  • Template editor for creating your own page layout
  • Extended and user-friendly administration interface
  • Back-office data entry possibility
  • Survey expiry dates for automation
  • Enhanced import and export functions to text, CSV, PDF, SPSS, R, queXML and MS Excel format
  • Basic statistical and graphical analysis with export facility
  • Screen Reader Accessiblity
  • W3C compliance
  • Supporting more than 50 different languages in frontend and backend
    • A detailed manual is available in several languages in our Online Manual
    ....and many more small features we have left out so be sure to visit our online demo.


    Using Google Docs to make a survey

    google-docs-survey-exampleDid you know you can make a free, and rich survey or poll using Google Docs? It’s simple to set up, and as a bonus it drops all your results into a spreadsheet where you can slice/dice/analyze/chart/graph or whatever.
    To create a survey, inside Google Docs go to New then click on Form as shown at right.
    Go through and create your questions, set the response type (multiple choice, checkbox, text, drop down, etc.) where you’ll enter in the possible answers and if the question is required or not.
    When you’re done, select a theme (the look of your survey) and save it and a link to your survey will appear at the bottom of your screen. You can then copy/paste that link into your website, Twitter or whatever to publicize your survey. You can also embed the survey right on your site if you wish.
    The results are then fed into a spreadsheet that you’ll find in your Google Docs document area.