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A Brief History of Parallel Programming in Java

  • Posted on October 28, 2016 at 10:54 pm

Concurrent programming was part of the initial Java specification, although most of the 1.x JDKs available at that time only supported concurrency at the JVM level (using so called green threads) without being able to fully benefit from the multi-core hardware. The Java language already contained the basic primitives (Thread class, wait() and notify() function calls, and the ‘synchronized’ keyword) that are still used nowdays to program modern many-core and multi-core hardware architectures.

Then progressively the JVMs evolved in order to improve mapping of to native threads (beter I/Os, faster context switching). .

As part of JSR 166, Java 5 introduced the java.util.concurrent package, which provides concurrency utilities (concurrent collections, atomic variables, locks) to ease development of concurrent programs and increase maintainability. On the performance front, the newly provided execution framework introduce a pool of reusable worker threads in order to reduce the cost of creating new (native) threads.

The next release, Java 6.0 received a small update as part of JSR 166x: mostly bug fixing and polishing, but also a few new APIs like ConcurrentSkipListMap and ConcurrentSkipSetMap.

Java 7.0, scheduled for mid 2011, will bring some new tools for parallel programming (JSR 166y), a fine-grained concurrent computation framework, some new concurrent data-structures and a new concurrent random number generator (ThreadLocalRandom). The new concurrency framework is based on the fork/join metaphor and can be used for algorithms that can be expressed using divide-and-conquer techniques. Then the work-stealing policy implemented in the framework will ensure that all the concurrent tasks are dispatched efficiently to all available threads (and thus to all available processor cores). It is also worth noticing that some other areas of the JVM are also following this trend (see for example the new thread-safe concurrent class loaders).

Some other features previously scheduled for Java 7.0 were postponed to Java 8.0 after the acquisition of Sun by Oracle (this late split is known as ‘Plan B’) and JSR 166z is supposed to cover these new enhancements. One of the main feature would be the introduction of lambda-like expressions (previously known as Project Lambda and described in JSR 335) and their use in combination with the new ParallelArray framework which provides an integration of data parallelism into the Java language.

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MetaTrader VPS Internet hosting Critique

  • Posted on October 28, 2016 at 5:16 pm

Metatrader internet hosting is acquiring quite well-liked presently. There are several traders who are making use of this platform for on the internet foreign exchange trading.

Why don’t we talk about the various factors of metatrader hosting./p>

The 1st and the most crucial aspect is price tag. The are many organizations which supply VPS hosting providers for $50-$70 for each month. This prepare is advantageous in a lot of ways. For a cost of $fifty-70, the trader will get unlimited disc area as nicely as band width.
The metatrader VPS gives a true time access to person accounts. By using person accounts the traders can deal with and trade in actual time. The trader can host his specialist advertisement visor without any concerns.
The servers of the company are the portion of the larger grid. These servers use a number of management programs to make sure that each trader has entry to the World wide web.
The traders can use Linux,MAC and windows base operating techniques on their personalized computer.
The server of the business does not rely on any windows particular engineering. The server of a reputable organization is constantly safeguarded from viruses, malware and adware.
The shopper is free to upload any type of specialist ad visor, scripts and apps.
There are many businesses which let you to change your host or place.

Higher than things must be considered before you choose for a metatrader hosting strategy. There are several firms which are supplying their companies but your occupation is to decide on the best one particular. There are a number of internet sites which review different internet hosting firms. It is a great thought to go by means of these evaluations prior to you purchase a hosting strategy for your trading wants. These testimonials can support you a whole lot in comparing the charges and features provided by a number of organizations. Don`t overlook to strategy your month to month budget. In this way you can discover the best provider inside your price range.
metatrader hosting

Web Designers in Dallas TX Where Designs Come from the World Of Dreams

  • Posted on October 28, 2016 at 1:11 pm

With countless web designers, it is really a daunting task to findthe betteramong the best.Web designeris not someone who sits with a white paper and several other books round him for reference. A good web designer sits with a plain paper and brings designs from the world of dreams. Yes, everybusinessmanand individual looks for uniqueness in web designs. It is not a cakewalk to bring a web design that is different from millions of websites in the world of web. Web designers AustinTXwith impeccable work records and infrangible commitment towards work bring the difference in allweb designs that come out of the creative workshop.

Web design can say a lot about the business when it is designed with professional and personal touch.Websitesarethe gateway to the amazing world of internet. Hence, it is mustto designit with maximum in esthetical and functional features. It is said thata picturecan speak thousands of words. Picturesque web design with professional touch is abestsales representative to work throughout the day for long years without any salary.

Consideration should be given to the experience and talents of the web designer.Designershould have loads of creativity to turn ideas todesigns. It is all the way they think and executethe snowyand shady ideas that glitter and glow in the mind. With most modern tools and technologies web designing, ideas are developedin to designs that speaks for the business. Web design can act as the best promoter and brand builder for a business. Design should be user interactive and should provide all features in accordance with the needs of website or business.

More and more people are now using mobile phone. It is a trend that businesses should be well aware of. You should give importance to responsive web designs, which work on portable devices too. Such a SEO-friendly web designhelpsin increasing the search engine rankings. It is not a bad idea to make use of website redesigning service to get a new, fresh and professional looking website that works on almost all devices. After all, without strong online presence it is really difficult to satisfy the needs of proactive customers. Many believe that better web design setsstrong foundationfor online presence. Web Designers Dallas TX has good knowledge about the expectations of customers and SEO requirements. This will help you get a website that will fetch results and revenue.

Epidemic SEO having expert web Designers in Texas. We provide unique website design services by . For more details contact us at

Web Site Programming Services Outsourcing To India

  • Posted on October 28, 2016 at 6:26 am

India has become the most favored destination for web site programming outsourcing. Outsourcing to India offers significant advantages such as technological agility, high-quality, skilled workforce, flexibility, cost effectiveness and faster time to market. All kinds of software programming services could be outsourced to India.

Web sites play a dominant role in online business management and is your key to the virtual world. A personal or business web site should be user-friendly and must necessarily have a user-centered design. Splendid images, animations, video, and audio lend attractiveness to websites. Web site programming refers to a series of procedures which involve conceptualization, planning, modeling, and execution of electronic media delivery via Internet in the form of Markup language, which is suitable for interpretation by Web browser and display as Graphical user interface (GUI).

Offshore outsourcing of web site designing services is increasingly becoming popular because of the numerous advantages it offers. Outsourcing website programming services significantly helps in reducing time, effort and money. The modern market has become extremely competitive and product and service life cycle has considerably decreased. This has resulted in up-gradation and maintenance of existing web sites.

Outsourcing programming services provides its customers an extensive range of offshore outsourcing services to cater to your business requirements. Our broad array of Web site programming services include Database driven web-sites, Portal web-sites, E-commerce solutions such as Shopping Cart, Online payments, Web based Applications such as Search engines, Chat, Email, etc., redesigning of an existing website and designing of Static, Dynamic and Flash web-sites for business purposes. Our competitive edge over other outsourcing firms lies in our low-cost effective professional web site maintenance service. At Outsourcing Programming Services, we provide an exclusive range of web site programming and web designing solutions; from professional corporate websites to e-commerce and micro and flash websites.

We have a dedicated team of well-qualified and highly experienced copy writers, visualizers, Graphic Designers, Front-end and Database Programmers who have proven expertise in working with sophisticated, cutting-edge software tools and technologies such as Windows NT and Linux, Photoshop, Corel Draw, Animation S/W, Flash Dreamweaver, Frontpage, Homesite PHP, ASP, Java, Servlets, Applets, EJB, Perl, JavaScript, WAP, MySQL, MSSQL, Oracle and MSAccess. Our advanced technological tools such as multimedia computer systems, scanners, printers, Web promotion techniques and promotion software and 24 hours internet communication help us deliver services promptly as per your specifications.

Outsourcing Programming Services offers its customers an exclusive horde of advantages including 24×7 promotions of your brand and services, effective medium of promotion, highest level of interaction with your company, and a portable, scalable and easily accessible, marketing tool.

Finding A Pci Compliant Hosting Provider

  • Posted on October 28, 2016 at 4:58 am

Do you own a business or e-commerce website that processes credit card transactions on a regular basis? If so, finding a PCI compliant hosting provider is of the utmost importance to protect your business against the ever increasing number of cyber attacks and security breaches that businesses face.

PCI DSS Sets the Security Standards

The Payment Card Industry Data Security Standard (PCI DSS) is a set of required standards that were designed to make sure that all companies that handle any type of credit card information or consumer data maintain a safe, secure environment.

But becoming PCI compliant is more than just following the PCI DSS. It contains a multifaceted set of security standards, which covers everything from configuration and management of your computers and devices to how well your staff is managed and trained.

One of the best ways to protect your business’s reputation and the privacy of your customers information is without a doubt finding a PCI compliant hosting provider that can safely and securely host your business’s website.

What to Look For in a PCI Compliant Hosting Provider

When looking for a compliant hosting provider, you need to make sure that provider has the tools and services necessary that will continually safeguard your business against attacks and keep you up-to-date with PCI DSS.

Security services include security scans, which scan your business’s complete payment-processing infrastructure for security vulnerabilities. These scans need to take place at least once every 90 days, but the more scans done, the better.

If you utilize a dedicated PCI compliant hosting provider, you can rest easy knowing that your website, credit card payment processing data and consumer data is 100 percent secure. This is because your site will have its own dedicated server and administrators who work with your hosting provider will be able to give you the time and service you require to make sure your business runs smoothly.

Look for a hosting provider that will give you the option of having your site hosted on a dedicated PCI compliant server. While shared servers may simply “get the job done,” you don’t just want to do the bare minimum. PCI is about helping your business protect your customers, so the bare minimum just won’t cut it. You need to focus on customer safety for less chance of danger and better business practices.

The Principle Of Retinal And Iris Scanning Technology

  • Posted on October 27, 2016 at 11:02 pm

Fingerprint method can be misapplied. This reality is proven scientifically correct. For that reason, people then try to find the more reliable biometric systems.

The retina is part of the eyes that is responsible for the ability to see. The pattern of blood vessels that forms the retina is as unique as fingerprint. The principle of retinal scanning technology is scanning the pattern of capillary blood vessels on the retina with low-intensity light sources.

In 1987, the first retinal scanner was made by Leonard Flom and Aram Safir and has been patented. However, by the year 1994, John Daugman developed the technology of iris scanning as a competitor for retinal scanner.

Retinal scanning principle

Retinal scanning is based on the fine capillary network that meets the needs of oxygen and nutrients to the retina. These blood vessels absorb light and can easily be visualized with appropriate lighting. To that end, the close distance between the eyes and a scanner is needed. The appropriate position of eyes toward the scanner is also necessary. Also, there must be no eye movement, such as blink or glance.

Retinal scanning can not be 100 percent accurate. It is also less suitable as a security tool because even though the pattern of capillary blood vessels of human beings’ retinas cannot change generally, but diabetes, glaucoma, and cataracts can change it.

Iris scanning

In its development, retinal scanning is considered to be too disruptive in the case of security detection devices. In the use of retinal scanning, the eyes should be as close as possible with the scanner. For long-term, the light of scanner that is too close to the eye can give negative effects.

Because of the weakness, iris scanning technology emerges as strong competitor. Iris, a network that gives color to the eyes is also unique in which the chance for two identical slices is 1:1,078. Even, the left iris and right iris of someone are different.

SQL Server Online Tests – Make Strong SQL Programming Skills

  • Posted on October 27, 2016 at 12:44 pm

SQL Server is a Relational Database Management System (RDBMS) which is produced by Microsoft. MS SQL Server is designed to run on platforms ranging from laptops to large multiprocessor servers. To know about its history, we at Get Gyan provide the various through this facility one can know about the history, functioning and commands of the SQL Server. Our association is one of the largest education portfolios which provide online tests on the various categories in which SQL Server Tests are one of them. To improve the programming skills here you will find the various SQL Server Test Questions. As here is no registration charges all candidates can take this facility of Free SQL Server Tests. s.

For registration at , you just need to fill a few queries like name, email and password and after that you easily can find or take Free SQL Server Online Tests. The online mode is the best mode where you can get the SQL Server Test at any time and from anywhere. Here is also a grading system which helps to judge yourself as in what level you stand for. You can also give the comment in the comment box regarding the Free SQL Server Test. So here you can use the Free SQL Server Online Test with hassle free manner. These SQL Server Online Tests help you to make strong in SQL programming skills. You also can take the help of your colleague and tutor to understand any query.

With the help of these SQL Server Online Tests, you can face any interview which is related with SQL Query. You also can take the help of find Free SQL Server Test to make project on this programming language or create a database server in your project as you are in 12th, B. Tech., or in a company. So with our help, you can easily improve your skills. By making test on the SQL Server Test Question for Free, you can easily execute your commands with providing their various functions.

With the help of SQL Server Online Tests, you can know about their various tools which help with your database administration and programming tasks. SQL server can support thousands of concurrent users and which is commonly used as the backend system for websites and corporate CRMs. Dont confuse with SQL server and MS SQL server as these are same. So, to be familiar with SQL server, register here now.

Sql Server Database Corruption If You Run A Query With Parallel Execution Plan

  • Posted on October 26, 2016 at 11:48 pm

You may come across Access Violation if you run an SQL query, which uses parallel execution plan in Microsoft SQL Server 2008. Access violation is an error condition, which may occur while performing general operations on the SQL database. It may occur due to application malfunction, software bug, or database corruption. It renders your database inaccessible and may cause data loss, if you don’t have a complete backup to restore data from. To overcome such issues, is required.

As an example of Access Violation in Microsoft SQL Server 2008, consider the below scenario:

In MS SQL Server 2008, you’re running a query that includes all the below mentioned clauses:
Inner join
Union all
Group by
The database query is using parallel execution plan.
You execute the query.

In the above scenario, you may face access violation. And, you receive the following error message:

Location: xbmp.cpp:2038
Expression: 0 != pxteBitmap
Msg 3624, Level 20, State 1, Line 2
A system assertion check has failed. Check the SQL Server error log for details. Typically, an assertion failure is caused by a software bug or data corruption. To check for database corruption, consider running DBCC CHECKDB. If you agreed to send dumps to Microsoft during setup, a mini dump will be sent to Microsoft. An update might be available from Microsoft in the latest Service Pack or in a QFE from Technical Support.
Msg 0, Level 20, State 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.

Furthermore, the mini-dump file is returned under the log folder of MS SQL Server 2008.


As sated in the above error message, this problem may have occurred due to either database corruption or a software bug. After corruption, SQL Server can not read the database and this behavior occurs.


Run DBCC CHECKDB utility to try fixing database corruption. If the database is severely corrupted, it may not work. In such cases, third-party applications are worth using.

The MS SQL Recovery applications are particularly designed to thoroughly scan whole SQL Server database and extract all damaged and inaccessible objects from it. They allow you to perform SQL Recovery on your own as they have simple and rich graphical user interface.

SQL Recovery software safely and successfully repairs damaged SQL Server database in all cases of corruption. It works well with Microsoft SQL Server 2008, 2005, and 2000. The software restores all database objects such as tables, reports, forms, macros, and more.

Science Fair Projects On How Do Video Games Affect Blood Pressure

  • Posted on October 26, 2016 at 7:25 pm

Every year students are given the opportunity to enter a project in their school science fair. Those projects that excell at the school level are sent to the city or state science fairs. Finally, those that do well at these regional science fairs move on to the national science fair where large scholarships and grants await the winner.

If you are interested in participating in a science fair this year the consider examining how video games impact your blood pressure. For this project you will first need to examine what research has already been done of the topic. This will give you the basis for making a prediction. This prediction will be your hypothesis.

However, you don’t have to agree with the outcomes that previous researchers have come to. It is very common for different reserachers to arrive at different conclusions based on their unique experiences with and understanding of the test subject. For example, while evidence may indicate that video games increase blood pressure, you may “know” that certain games can have calming effects on the body.

Your unique insight into video games and gaming will be very valuable when you are putting together your video game science fair project. You can use your past experiences to help you select a video game or video games to experiment with and you can also use your understanding of gaming environments to create different testing stimuli.

The key to creating a winning science fair project based on video games is to show the judges something that they may never have seen before. This can be new insights on how to use video games to relax or to make adjustments to biodata. It can also be new data that contradicts previous findings.

How To Find The Best E-commerce Web Hosting Service Provider

  • Posted on October 26, 2016 at 6:11 am

Finding an e-commerce and a web hosting company may sound simple, but it is certainly a difficult task. It is a crucial decision and in case, it goes wrong it will surely have an adverse effect on the business. While choosing an e-commerce company, the business needs to consider certain points before finalizing on one.
The first on your list should be the kind of web hosting service that the company provides. Consider choosing the company that provides shared, virtual and dedicated web hosting service. They should be able to provide these services depending on the clients requirements.

Apart from this be very sure of the quality of customer service, they provide. Web hosting companies should render their services 24/7 via telephone, email, and live chat. This is because many companies in the beginning make many promises, but hardly render any dependable customer service. The fact is that every designing company provides the same products. However, consider the one, which renders excellent customer service along with state-of-art facilities as per your requirement.

The main aim of hiring a web designing company is to have great performing sites; hence, the eCommerce web hosting company should provide customers with sites that are user-friendly and attractive. Complicated sites do not attract user attention and the company may loose on prospective buyers. Therefore a simple and a user-friendly site which is well drafted can help the company to prosper.

Most, vital of all, many renowned web hosting companies promise to offer “unlimited” disk space and bandwidth. However not many firms have any issues with disk space/bandwidth, this is because everybody knows someone somehow will surpass the disk space and bandwidth, even though it was promised to be unlimited. To conclude, it is wise to read the agreement thoroughly and check with the company for clarifications before entering into a contract.

Online are listed many web hosting companies which promise all these services at reasonable rates. Its wise to check and confirm the services rendered by each so that the company does not face problems in the future. A good web hosting company can play a major role in the success chart of the company. With their help, aid and assistance, companies can reach great heights. Log in to find the company that helps the company with the best possible services.