A Brief History of Parallel Programming in Java

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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Tips for Choosing Fence Post Replacement Expert
There are more people who have engaged in fence post replacement expert selection. This act is not any easy as more people have had a negative outcome. Choosing the fence post replacement expert to undertake certain services might be difficult at some point. You should be able to consider some factors if you need a better outcome. The need for these services might be enhanced by choosing the best personnel. If you have a fence post replacement expert then you will be guaranteed ease in accessing the services required. One should consider the listed features as this will aid a lot in choosing quality personnel.
The core principle guiding factor includes the certification factor. The certification is the only way in which one might be assured of the qualification of the person whom they are choosing. It is important if a person keenly observes this feature if they need healthier results. Not all the personnel has a certification of availing such services and this is the reason why it is essential for any person to consider doing so. For more years, more people have been enjoying better results by keenly considering the certification element. Get to check at such matter and you will be assured of enjoying better results.
Considering the ease is communication should also be another common way which one should keenly check at. Over the past years, communication has become the major field with most challenges. Considering the matters which relate to language barriers, any person should now make sure that they are able to easily communicate with the person they are choosing. This is a core factor and a gadding element that might grant any person with the best results. Not all firms will always provide better fence post replacement experts who are easy to communicate with. This should be the case and if you consider such you might merge with a quality result.
The other guiding factor includes the training feature. There are more personnel’s who have been selected due to the better training feature, the training effect is mandatory in choosing any person. Not all people get to consider this for it has no direct implication. However, it plays a major role and those who need better results should always consider doing so. It is an essential factor and a guideline feature. By checking the best fence post replacement experts based on the training effect, you will be assured of enjoying quality results. This is advantageous and those who keenly check it will be guaranteed of biter outcome.
Get to also consider the service quality if you need the best personnel. There are several ways in which the person has been playing major roles. Through making through observations of the service outcome, any person can be assured of making decisions of whether to or not select such fence post replacement experts. Considering the service quality might be the only way in which one might enjoy the healthier selection. Not all people focus on the quality matter and if you do so, you will be assured of a better outcome. Adopt such measures only if you require healthier selection.

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Vital Things to Put Into Considerations When Choosing a Personal injury lawyer

When you have any personal injury, you should look for ways on which you can get come compensations in the form of medication and many more and this is why you should work with a perianal injury lawyer to take you through the court sessions. For you to get quality services from the personal injury lawyer, you should carry a good search so that you can choose the best one from the many existing.

The first factor which you should consider when choosing a Personal injury lawyer is to look at the level of experience which they have. You should know at the back of your mind that a Personal injury lawyer with a high level of experience will have the skills and knowledge which they will apply for the dental issues you have so that they can give quality Personal injury cases. As you know that not all the Personal injury lawyer you will find in the market will have the high level of experience you need, and so you should consider looking at the number of years they have been on the filed so that you can know if they have gained quality skills, and also they should have some quality dental projects they have done in the past as this will show they have some good dental skills.

If you want to hire an ideal Personal injury lawyer then you should consider looking at their credentials. This means that they should have all that it takes including the license as this will enable you to trust them as they will have the approval of the government to allow them to offer Personal injury cases to other people. If a Personal injury lawyer has all the credentials, then it will show they have the right tools, and also they have undergone training and therefore they can offer high-quality Personal injury cases. But you should be aware of the Personal injury lawyer with a fake credential, and therefore their main aim will be to exploit your cash and not offer you nay quality Personal injury cases.

It is essential that you consider looking at the reputation of the Personal injury lawyer you want to hire. It is good to work with a highly recommended Personal injury lawyer as this will be an indication that they can offer some quality Personal injury cases. You can know if the Personal injury lawyer you want to hire is recommended by looking at what you family members and friends will have to say concerning the services that Personal injury lawyer offers and also you can go to the social media platform of that Personal injury lawyer so that you can look at how the past clients express their views on the services they received from that particular Personal injury lawyer.

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The Advantages If Using All Natural Cleaning Products

The Covid-19 is something that should be taken seriously. You need to understand when you are getting cleaning products and sanitizers you have to choose the one which is ideal for you. There are many products in the market and this can make it difficult for you to choose an ideal product for you to use. If you are not sure, you should think of using all-natural cleaning products.

What you have to note is this is an ideal way you can use to protect yourself from germs. The one thing you have to understand is when you get the ideal product then this is one of the ways you can use to fight germs. What you have to note is when you use the sanitizers, then this will aid you to kill germs. When you deal with sanitizers, you will find that this is something which will aid you to kill up to 99.9% of germs. Thus, this is the reason you should think of using this product.

The reason you should think of using the product is that it is portable. Some of the things you should note is this is a type of commodity you can use in place where soap and water is not available. What you should note is this is a type of product that you can be able to carry around with ease. You have to understand when dealing with this, you will end up enjoying the convenience. The best part is you can be able to use it at any place without being stressed.

The one thing you have to keep in mind is that this is something ideal and that it will end up giving you the best. The one thing you will find is if there is a place where there is high traffic then you will find germs will spread fast. If so, you need to use the product to ensure you fight the germs. What you need to understand is when you do this, you can be assured you will end up taking care of your health.

What you have to understand is when you are investing on the cleaning products you will find there are many options you can use. What you have to understand is if this is the case, you need to get the one which is all natural. If you do this, you will end up using products that do not have a lot of chemicals. What you should note is when dealing with this; you need to use products with a good reputation. Thus, you will end up having clean hands.

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Quickbooks Hosting With Citrix Xenapp6; New Features, Benefits

Many accounting professionals and small business owners are now aware of the benefits of hosting their QuickBooks using Citrix and a third-party hosting company versus exchanging QuickBooks files or self-hosting client data.
These benefits include:

Access from anywhere – All you need is an internet connection
Convenience – No driving to and from your client’s office
Reduced IT Costs – Companies have reduced their IT costs by 30 percent or more
Reliability – Networks and applications are managed by experts
Security – 128-bit encryption and servers stored at SAS 70 Type II data centers
Citrix recently introduced XenApp 6.0, which is the latest on-demand application delivery and virtualization software from Citrix. The benefits of Xenapp 6.0 to quickbooks hosting users include:
Enhanced Citrix receivers for Macs – Seamless access to the server through the new Citrix receiver
Universal Smartphone Support – Access from any smartphone including iPhone, BlackBerry, Windows Mobile, and Android
App-V Integration – Citrix and Microsoft virtual applications can interact and share data seamlessly
Expanded support of devices – USB access supports POS devices, webcams, microphones, scanners, digital cameras, and more
Built for Windows Server 2008 – Improves speed and reliability of QuickBooks applications delivered through Xenapp 6.0.
Self Service – Using Citrix product Dazzle, user can now subscribe to applications from their PC and MAC
Multi-Language Support – Access can be customized to up to 8 different languages
Supports 64 bit computing – Applications run faster with 64 bit computing versus 32 bit computing
In addition to these user enhancements, there are many data center enhancements that improve the reliability, security, and performance of Citrix application hosting.

Amazing Facts On Children And Internet Porn

Pornography on the internet must be on the top of the list for parents concerns for their kids.

I had made some really scary discovery whilst researching on how to address this issue for my home, and here are the shocking results:

Did you know?
The multi-billion-dollar pornography industry is using the Internet to tap into a new market unashamedly, the sanctity of American homes. There are 4.2 million pornographic websites. That equals roughly 12% of all websites in the world.

80% of 15-17 year olds have had multiple hard-core exposures.

90% of 8-16 year olds have viewed porn online (most while doing homework.)

29% of 7-17 year olds would freely give out home address.

14% of 7-17 year olds would freely give out email address. 26 Childrens character names (Including Pokeman and Action Man) are linked to thousands of porn links.

The average age of first Internet exposure to pornography is 11 years old.

One in five children ages 10-17 have received a sexual solicitation over the Internet.

70% of sexual advances over the Internet happened while youngsters were on a home computer.

A survey of 600 households conducted by the National Center for Missing & Exploited Children found that 20% of parents do not know any of their childrens Internet passwords, instant messaging nicknames or email addresses.

Incidents of child sexual exploitation have risen from 4,573 in 1998 to 112,083 in 2004, according to the National Center for Missing & Exploited Children.

96% of kids have gone online; 74% having access at home and 61% use the Internet on a typical day.

Twenty percent of youths received sexual solicitations. Eighty-nine percent of sexual solicitations of youths were made in chat rooms.

The report compiled for the Pew Internet & American Life Project found that nearly nine out of 10 young people, ages 12 through 17, have online access up from about three-quarters of young people in 2000.

Older teen girls who were surveyed, ages 15 to 17, are among the most intense users of the Internet and cell phones, including text messaging.

One in four children who use the Internet are exposed to unwanted sexual material.

21% of teens say they have looked at something on the Internet that they wouldnt want their parents to know.

Yikes! What on earth is happening? Pokemon character names used as links to porn sites?

Ways to Avoid Teen Pregnancies with Symbian Monitoring Software

Adolescence brings hormonal changes. Teenagers start interacting, flirting, and dating others in their age bracket. With the glamorous depiction of sex from movies, magazines, and their circle of friends, teenagers quickly try to move towards a more physical relationship. This results in unwanted teenage pregnancies. Teenagers are hardly able to cope with problems of their age, let alone a problem as delicate as handling pregnancy. Parents, teachers, health professionals, and teenagers themselves have to shoulder this responsibility.

Teenage pregnancy can be avoided by abstinence or contraception. Parents should try to delay sexual activism in teenagers until a mature age. If their teenager is sexually active, they should at least talk to them about the use of contraceptives.

The following and many other techniques are used along with Symbian monitoring software to avoid teen pregnancies.

First of all, you must monitor your teenagers with Symbian monitoring software. You should always know who they are with, where they are going, and what are they planning. The software program allows you to monitor your child’s physical location, calls, address book, photos, and messages. You should know their friends and anyone they’re dating well enough.

You should also be aware of extent of media exposure towards your teenager. Media in this context includes magazines, TV, internet, and movies. Try to control his/her media exposure to constructive and educational purposes. The program lets you know if your child is looking at sexual material on the phone.

Discourage early dating. Maturity comes with age. If you allow teenagers to date at the onset of adolescence, they can’t imagine the consequences it can have. The program lets you know if your child is breaking the dating rules you set.

Teach them how to say -No’. It is important for your teenager to enter into any relationship willfully. Generally boys may urge teenage girls to have sexual relationships with them. If the girl is strong enough and confident, she will say no to early or unprotected sex. By checking your child’s calls, you’ll know if the boyfriend is being too insistent for your taste.

Teach them how to resist peer pressure. When adolescent boys and girls start dating, an elimination process in the form of peer pressure starts. The ones who are able to find a date, join the elite of popular members. Those left out without dates are under strong pressure to get laid as early as possible. Because this pressure often comes in the form of calls or text messages, you’ll know about it immediately.

This type of cell phone monitoring software is a great helper that tells you the risks and situations that your child is going through. Using it is easy and definitively better than the alternative.

Author Bio: Click Here to to know more about SpyBubble Symbian Spy Software.

Do You Know How to Select the hardware

The hardware fittings is mainly included copper, aluminium alloy, stainless steel and irons these four types of material, and there is also a great difference between the prices. At present, the most used in the family fitment is stainless steel hardware, but the stainless steel has some shortcomings such as material impurity and easy to print out the waterlogging, and now many families start to use the aluminium alloy accessories. As we know, in fact the aluminum material some merchant asserted that is just the alloy material which contains some aluminum, also blend with some silicon, magnesium, the surface film thickness and surface treatment also will affect the price and the quality of the material. Oxidation, dull polish, electroplate, wood grain , baking varnish are the main surface treatments, and their prices are also differs greatly.

Some citizens reflect that they found some -stainless steel accessories- are made by stainless iron that is blend some iron into the stainless iron, the prices varies nearly two times. Take the towel rack for instance, the price of stainless steel one is 200 yuan while the stainless iron one is just 70 yuan, they are basicly same, but the stainless steel is brighter and the stainless iron will easily become darkened or rusted when use for a long peroid.

Besides, there are also some counterfeits that use theinferior aluminium alloy as the raw material, and the surface is plated with a metal light in order to pretend toobe the top grade stainless steel. When you tell these two materials you can beat the surface, if made a clear sound then it is mostly stainless steel, if made a tedious sound then it is likely to be the aluminium alloy.

The present home decoration are generally divided into general mirror and silver mirror, their prices are differ about 30%, the market price of silver mirror is about 80-90 per square metre while the general mirror is about 50 yuan, and their qualities are also differ greatly.

The main factor that leads to different prices is using different materials, the silver mirror colored with a bed of mercury then to mopping, and the general mirror is plated with a bed of aluminium then to mopping, the waterproof and fog efficacy decline a lot. Moreover, baking finish, stamp, tempering are also affect the mirror’s price. Get more information about the hardware here.

Olivia Tong is the freelance writer for e-commerce website. weiku.com offers the buyers around the world to find quality supplier of electrical components globally. We try our best to aggregate leads in the business world, and let these leads benefit the entire businessperson.

Iron Balance Microsoft Exchange Server 2010

Since Exchange 2010 includes the following server roles:

Server mailboxes on this server hosts the mailboxes and public folders. Client Access server in the server hosted client protocol, such as POP3, IMAP4, HTTPS, mobile Outlook, service availability and service auto-discovery. Server Unified Messaging This server connects the internal PBX and Exchange 2010. Hub Transport server is routing mail routes the internally Exchange. Edge Transport server is routing mail, which is usually placed at the boundary of the topology and routes the incoming and outgoing mail in your organization Exchange.

Standard design requires a Client Access server farm with load balancing for high availability and performance solutions. For Exchange 2010, you can use softovoy Balancing Windows Network Load Balancing (WNLB) but with the following restrictions: WNLB can not be used in conjunction with database availability groups (DAGs) – functionality allows you to sync mailboxes across multiple sites. Due to performance issues do not recommend running more than 8 Client Access servers balancing WNLB. WNLB can not detect a denial of service on servers and only works at the level of L3, ie, determines the availability of servers based on IP. That is, if the server responds to IP, but server applications do not work, you want to remove the failed server client access from the pool balance manually. WNLB configuration errors can lead to degradation of network bandwidth. As WNLB balancing exercises only at the client, with a limited pool of client addresses, for example when using NAT, load balancing between servers, Client Access does not work effectively.

All these problems are eliminates by the use of hardware balancers Brocade ServerIron ADX, which balances the load on the levels of L4-L7, with a maximum capacity per chassis up to 70Gbps, allow you to choose from a variety of mechanisms to balance and carry out constant monitoring of servers from the IP-availability and load SNMP and ending with an extended Health check up to check the response given on the application.
The joint solution of Brocade and Microsoft have passed laboratory testing in the Microsoft Enterprise Engineering Center (EEC) in the Microsoft headquarters in Redmond.

In this scheme, ServerIron ADX provides:

* Save sessions. Client to connect to one of the servers continues to work with him only within the session.
* Rules of switching content (Content Switching Rules). Through support for switching at the level of L7, ADX can make decisions on balancing traffic based on data about the URL, cookes, or ID SSL-session
* SSL-proxy – the maintenance of a secure tunnel between client and server with the possibility of balancing at the application level
Monitoring the north to control their availability and willingness to process requests.

Nokia N93 A SmartPhone for Multimedia Use!

The is a smart phone by Nokia designed especially for multimedia use. It was introduced in April 2006 and released in July 2006.The Nokia N93 mobile phones started shipping on July 24th, 2006.It is the most advanced camera phone from Nokia at the time of its release.

Nokia N93 comes in 2 colours, pearl black and silver, however, there will also be a Nokia N93 Golf Edition which is preloaded with Pro Session Golf software to help improve golf skills.

The N93 has improved camera capabilities compared with the earlier N90. The phone has DVD-like video capture at 30 frames per second, a 3.2 megapixel camera, direct TV out connectivity, digital image stabilization, visual radio, close up mode, UPnP support, symbian application support, infrared, Bluetooth, fully HW accelerated Power 3D graphics from Imagination Technologies, Carl Zeiss optics and 3x optical zoom, comes standard with a full web browser as well as a 30 fps VGA-resolution video recording capability.

This handset is a movie making machine as well as being a smartphone, so in place of portability you get video recording par excellence, complete with the ability to show said videos at friends and family via a wired connection to your TV. The bundled Adobe Premiere Elements 2.0 software will further assist in burning your high-quality home videos onto DVDs. This is virtually a camcorder with a phone attached. Videos can be captured in MPEG4 format at 30 fps. An awesome phone which is worth buying!

Nokia presents an awesome mobile phone to undeniably replace the monopolist gadgets like digital cameras, music players and PDA’S, the Nokia N93; an asset to be proud upon! Packed with all the latest features, the comes in remarkable designs and enviable functionalities. The Nokia N93 is an ideal gadget that lets you use varied fields of entertainment and business applications. The Nokia N93 offers the best mobile video and photography experience along with rich Internet communication functionalities.

The bears the responsibility of being Nokia’s flagship ‘multimedia computer’ extremely well; at least until the N95 comes along in the first quarter of 2007!