Archive for the ‘Computers & Technology’ Category
Ip Accelerators For Wlan
Accelerator products can help enterprises a lot in addressing the performance requirements of all enterprise applications including voip. First, Accelerators change the economics of wide area networking by squeezing an average of 100% - 400% more bandwidth with peaks of 1000% depending on traffic mix. This frees up link bandwidth to support high quality voip service - and it does it without expensive WAN upgrades.
It is also worthy to note that Accelerators do not actually use lossy compression schemes that might degrade voice quality and they add less than one millisecond of latency. In fact, the Accelerator’s compression actually reduces end-to-end latency by reducing serialization delays on WAN links. For example, it takes 125 ms to serialize a 1,000 byte packet on a 64 kbps link, but if an Accelerator increases the effective bandwidth by 4X to 256 kbps, the serialization delay is reduced by a factor of four to 31 ms. The following formula can be used to calculate the serialization delay for any combination of packet size and link speed:
Packet Size (in bytes) x 8 / Speed (in kbps) = Serialization Delay (in ms)
In addition to freeing up the bandwidth normally consumed by data applications, Accelerators are able to reduce WAN bandwidth requirements for different voip codecs. In fact, tests have shown that Accelerators reduced G.711 bandwidth requirements by 20% and G.729 by 70%. As a result, WAN links can carry more simultaneous voice calls and the performance of other applications may also be improved.
Accelerators solve increased jitter and latency caused by large data packets over slow WAN links by fragmenting large data packets and injecting voip packets at regular intervals. This feature allows voip and data to co-exist even on branch office WAN links. For example, normally, a voice over IP packet “stuck” behind a 1,500 byte packet on a 64kbps lin will be delayed by 188ms.
Using the Accelerator’s packet fragmentation will result in the data packet being reduced in size (accelerated - say from 1500 bytes to 500b bytes) and then fragmented into smaller data packets (say - 2 packets of 250 bytes each). In this case, the latency for the voip packet will go down from 188 ms to 31ms! In addition to increasing WAN capacity for both data and voip while reducing latency and jitter, Accelerators also manage WAN bandwidth to ensure that critical applications like voip get the bandwidth they need.
Accelerators include an Instant QoS feature that prioritizes application access to WAN bandwidth. Without such priorization, the additional effective bandwidth provided by Accelerators could be consumed by aggressive, non-critical applications such as file sharing. Accelerator’s AppView feature provides graphical visibility for all application traffic sharing a link. AppView can be used to monitor WAN utilization and to plan future capacity requirements.
And finally, ip accelerators have a set of data integrity features that are designed to stop the packet loss that can degrade voice quality. A flow control mechanism reduces packet loss caused by link congestion and a packet recovery feature ensures that any lost packets are transparently recovered at the link level before they can cause voice quality problems.
Jim Francisto
What Are Sun Doing With Solaris?
Solaris 10, the current version of Sun’s enterprise UNIX operating system, was released to the public in 2005 for free download and with a long list of new technologies. The latest advances in the computing world are constantly being incorporated in new versions of Solaris 10 distributed every few months. Some of the major features of Solaris include Dynamic Tracing to troubleshoot performance issues, and the very scaleable Zettabyte File System (ZFS).
Sun also set up the OpenSolaris in 2006. During that first year, the OpenSolaris community had expanded to 14,000 members with almost 30 user groups globally, coding on 31 concurrent projects. Although displaying a deep commitment to open-source ideals, it also provides Sun with thousands of coders essentially working for free.
The development of OpenSolaris shows Sun Microsystems’ ability to be on the cutting edge of the technology world without losing touch with the current technology environment. The OpenSolaris project is the ultimate example of these twin strengths — Sun has leveraged the creative energy of coders around the globe and receives instant feedback about what their audience requires.
Broken Pen Drives - Memory Stick Repair Options
Mobile computing isn’t only restricted to laptops these days. Portability of data is increasing and it is becoming every more easier to carry around masses of data on USB memory sticks otherwise known as flash memory sticks or pen drives.
Sony patented the term “memory stick” when they came out with a new storage device for their digital cameras and digital files. Original drives were quite small but it was still cutting edge technology, but look where we are today?
Memory sticks allow Pc users to quickly and easily transfer data from one computer to another or to carry their data with them which is all well and good but one of the issues this raises is the sheer amount of data they can hold.
It is nothing to have 2,3 or even 4gb of data just sat on the memory stick dangling on the your key ring, This is more than the average hard drive was capable of holding even only 8 years ago, but every technology has a down side. Due to there portability even though they are quite robust it is quite common to damage a memory stick even to the point of losing all your data which for many is an absolute disaster.
Fortunately for the unlucky ones (which are more than you would guess) memory stick repair is a viable option so if the worse does happen it shouldn’t be the end of the world, even if your memory stick does contain all your data.
In the worse case scenario a good data recovery company can even retrieve data from a microwaved drive or even one that has be submersed,and in some cases even run over, which is a good thing when you consider the amount of data they can hold. There are of course no guarantees that USB memory stick recovery will work but the odds are good so don’t panic if you break your pen drive or memory stick as the situation may not be as bad as it first seems.
5 Reasons Why Blogging Is The New Internet Marketing Tool
5 Reasons Why Blogging is the New Internet Marketing Tool
Blogging is a concept that started in late 90s. It used to be a way to comment an existing webpage, an opportunity for visitors and readers to react or voice out one’s opinion on the said page. What started as a single-sentence commentary has evolved into pages of personal take on just about anything and everything under the sun. As it continues to move forward, online advertising has tapped into the blog’s potential. Here are 5 reasons why you should use blogging as an Internet marketing tool.
1.Blogging is simple. The simplest way to get your piece on the net is through blogging. No skills are necessary… an average adult can read and type, or at least click a mouse. It’s like having a virtual piece of paper and you just write your ideas, experiences, new products, and hope that the truth behind your articles comes out and entice your reader to also try your product. If you have a PC and an Internet connection (who doesn’t?) then you can blog and advertise.
2. Blogging is authentic. In this day and age where advertising saturate our lives, we question the credibility of promoters’ claims. However, in blogs, real people share their real-life experiences, unscathed by paid advertising. Reading blogs about first-hand product use is like talking to people about their first-hand experience. You definitely want to buy a tried and tested product.
3. Blogging is free. Because blogging is yet to be proven as a mainstream online advertising media, most sites see it as something to augment current marketing tools and thus offer it for free. Any opportunity for free webtime is definitely a bonus especially to businesses that are starting up. Needless to say, paid blog pages can generate more income for your seriously growing business.
4. Blogging builds credibility. As you get more and more into writing your experiences on a particular product or industry, your readers come to realize that they can depend on your posts for their own information needs. As such, you become an expert on it; as a consequence, more readers visit your site and more bloggers to your blogs. As companies and professional organizations notice the growth of your readership base, they may soon get in touch with you for advertising on your blog page, or make you an affiliate, which pays for every referral generated from your blog site.
5. Blogging builds your market. Unless you are a Hollywood star, chances are, only your Mom reads your posts. Mom has a lot of friends, so she lets her friends know how interesting your blog site is. But you need not depend on Mom to increase your readership base. Look into the following ways to build your market through blogging:
-By using your e-mail. Today, blogging is overcoming the e-mail’s popularity in quickly and effectively reaching and expanding a market. In this age of speed and quick access, logging in and downloading e-mail is simply taking longer than clicking into a blog site. Let them explore your site by using a short e-mail message as teaser to your blog site. If your e-mail is on an entirely different subject, use your e-mail signature to give to the site.
-By using subscription. An easy way to get your readers e-mail is to give them an opportunity to subscribe to your blogsite. Keep some exclusive information for your subscribers to entice readers to subscribe and give their e-mail address. Just be responsible in using their e-mail address, as the last thing you want is a comment on your blog that you are a spammer.
-By understanding your readers. Conduct a simple survey for your readers to understand their profile and advertising preferences. Ask consumers to give you feedback on a post, an ad or a trial that you shared. In this way, it is like interviewing your readers without the commitment and intrusion of a face-to-face interview.
-By joining a blog network –A network of blogs maybe a collection of blog sites that share the same industry, interest, readership base, payment mode, etc. Consumers find credibility and convenience in clicking one to several real bloggers about a single subject. Clearly, more bloggers are better than one.
-By using RSS. RSS is the fastest growing technology on the Internet today. As such, having RSS feeds to your blog is definitely another means of generating awareness for your readership base. Having a variety of feeds can add interest to your blog site.
Give your business a boost by effectively using blogging as an Internet marketing tool.
Buyers Guide For Screen Cover
Nowadays, our life is incomplete without electronic devices like iPod or cell phones or computers etc. Cell phones and computers have become a part and parcel of our life and to protect our electronic devices is our first and foremost duty. Suppose, you bought a new cell phone and you want it to be as it is for a longer period of time then you have to protect it from scratches. And for their Screen protection your basic requirement is a screen protector. Screen protectors are adequate but are never long lasting and you need to replace it frequently.
Why you should buy screen protector?
Screen protectors are required because it protects your devices against scratching. The materials used for making screen protector are clear and ultra thin plastic which adheres to the devices through static cling and doesn’t leave any residue when removed. Hard coated Polyester prevents scratches and extends life of the devices. Antiglare properties of this material improve visibility. New screen protectors like invisible SHIELD are made from urethane film and are more durable than the other screen protectors.
What you should look in screen protectors?
Check the followings benefits in the screen protectors before go for purchasing one:
1. A screen protector must be abrasion and chemical resistant.
2. It must guard your LCD screen against scratches, dents, dings and more and act as a LCD screen protector.
3. During daily use or shipping or travel screen protectors protects the laptop screens.
4. Screen protectors do not require any special cleaning process and you can use common household things to clean them which normally ruin laptop or desktop screens.
5. Screen protectors can be disinfected easily by using germicidal sprays and wipes.
6. Screen protectors should have an easy application and no bubbles.
7. It stays in its place on notebook computer and laptop even when they are closed.
8. Some screen protector covers the body of the devices entirely and acts as a protector cover just like the cases.
Most Screen protectors are as cheap as $10 and over $20 for covering full body. The higher price is counterbalanced by more protection and longevity. Measurements of the screen protectors are done diagonally. So, if you need a screen protector then measure accurately the size of your screen and give your device longer durability.
Screen Protection Is A Must For Every Computer
If you have a LCD Monitor, handheld computer, Laptop computer, notebook PC, or any other device with an electronic LCD display, by now you must have understood what is the importance of the touch screen or the display is. It becomes almost impossible, without the Touch screen or the LCD, to use them.
However, the touch screen or the display is very delicate and at the same time is very much susceptible to dirt, scratches, dust, gouges, wear and tear, oil and grease. All these things make the display inoperable and also affect its longevity and, durability in the long run. Hence, it becomes very much important that you act accordingly and buy a screen protector.
Your home computer, whether it is a Laptop or just a desktop, is also vulnerable to all those threats. So, screen protectors are also for your home computers as well. Since you probably use your home computer very often it would be advisable to make sure you address this situation quickly. Apart from the above said benefits there are also some other benefits of computer screen protector or a laptop screen protector.
? A screen cover shows a good resistance to abrasion and chemical affects.
? Screen cases guards your computer screen against dents, dings, scratches and more.
? A laptop screen protector protects the screen of your laptop during travel, shipping and during daily usage.
? Screen protectors defends your valuable displays at a cost much minimal than the cost of the screen replacement. Hence, economically also it is great.
? Cleaning process becomes much easier.
? More so, you would be able to disinfect the same with germicidal sprays and wipes. No other hard core methods are required for disinfecting procedure.
? You do not have to spend much on expensive cleaning products as common house-hold products would serve the purpose, which normally would ruin your computer screen.
? Application is very easy.
? No bubbles and would stay in place even when the notebook computer is closed.
When buying your screen cover do remember some points in mind. First and foremost, shop for your screen protector as you did while buying your electronic device. Buy one which totally defines your requirements and from some one who you feel is authentic and reliable as well. No doubt, placing a screen protector is a very small investment but worth for the longevity of your computer screen
Enterprise Unix - Some Background On Solaris
Back in 1987, AT&T and Sun said that they were collaborating to release a new version of UNIX, merging the two most commonly used releases at the time - BSD and System V. This new UNIX version would be called UNIX System V Release 4 - SVR4.
In 1991, Sun said that they were replacing their existing UNIX OS, SunOS, with a new version based on SVR4. SunOS was based on BSD and Sun were starting to encounter issues with that codebase, and so with an eye to the future Sun announced Solaris 2.
SunOS was then renamed Solaris 1, and each Solaris release was made up of the operating environment (Solaris 2.6, Solaris 7, Solaris 10) and it’s related kernel (SunOS 5.6, SunOS 5.7, SunOS 10). The reason for this odd branding was that Solaris would refer to the entire operating environment, which included the window manager and other software.
Solaris now uses a shared codebase for both SPARC and x86 products. Previous products had officially been ported by Sun to the PowerPC and Itanium platforms. Solaris is now one of the most popular UNIX releases, thanks to it’s power, scalability, and many new technologies Sun include with each release.
With the announcement of OpenSolaris, Sun have completed the task of open sourcing a powerful enterprise UNIX, allowing even the smallest UNIX consultancy to build a powerful UNIX infrastructure.
The Best Information On Woodworking Cnc And Tips For Cnc Woodworking Projects
A CNC WoodWorking is something that every shop needs to work on a variety of wood products. The point of this router is that it uses a computer numeric control to cut the wood. This means that all you have to do is set it up and let it do the job. Usually these projects are easy to do if you understand the software.
Most CNC wood routers use a CAM program so that you can use it with different grains of woods and you can use many different types of woods. If you decide to buy one you will see that many manufacturers carry them and they have many different designs.
Generally, these types of machines can be used to do small or large projects depending on the size of the machine. The CNC wood router can use many different angles to operate together to cut whatever it is you want to cut.
Some of the uses that people have used a Woodworking CNC for include making furniture with intricate patterns and designs, curve and smooth corners on wood, make different designs in wood, or for cutting dados. The tool is very versatile and flexible.
It is easy to think of a CNC Wood Router as a tool that is only used for cutting and shaping but you can do so many things with it. In fact, you are only limited by your imagination as to what it does. When you gain skill at using the tool, you will find that it does many things and it saves you time and money.
There are a variety of projects that you can do with the CNC wood router. Here are a few ideas:
Making furniture — many people decide to use a CNC Wood Routing to make a variety of furniture from tables to benches and chairs. They like to do elaborate patterns and designs into the wood and the router helps them do this easily. Many enjoy working with oak or wood for their materials.
Doll furniture - yes some children still play with doll houses and sometimes routers can be used to make doll houses depending on the bits that you use. This is an easy way to do something for your children and use your wood router too.
Toys — there are a variety of toy projects you can do with a CNC Wood router. You can make checkers and checker boards, elaborate chess sets, game pieces for all types of games. These projects are only limited by your imagination.
Radiator Covers — some people specialize in intricately cut wood pieces. Some people do a variety of radiator covers for homes that still have radiators. They do them in old fashioned designs like Old English, Vienna and others.
Wine Racks — if you are someone who has a wine cellar or just has a few bottles you want to sit somewhere try your hand at a wine rack. These are somewhat simple to create and your CNC Router can help you get it done quickly.
Visit CNCInformation today to get your free ebook on CNC Basics. CNC Information is a new community website that gives you all of the information you need for CNCers. Visit today for a free introductory offer of a free ebook on CNC.
Learn About Cnc Foam Diy Tips And Cnc Foam Cutter Basic Information
A CNC Foam Cutter is a machine that cuts blocks of foam into a variety of different shapes and sizes through the use of a computer that fully automates the process. This sometimes is referred to as a hot wire foam cutter because a hot wire is used to make the cut in a block of foam.
Usually the wire is made from stainless steel, nichrome and the wire can be very thick. The wire is heated using a process called electrical resistance which means it gets hot enough (around 200 degrees centigrade) to vaporize the foam before the wire makes contact with it. This process creates a smoother cut and produces a variety of shapes and sizes.
Depending on the length of the wire, the process will cut a shallow or deep cut. The wires have to be held in the machine under a very tight tension to keep the wire from sagging when making the cut. On many CNC foam cutting machines this wire is held vertically so that it doesn’t create the problem with sagging.
These shapes are cut by the cutting wire that is attached to the machine. They will cut either polystyrene or polyurethane blocks. The types of foam that a CNC foam cutter can cut include anything that is thermofusible and expanded. What this basically means is that the foam has to be able to melt at one of the lower temperatures. Some of them include:
§ Polystyrene — these are blocks of balls that are expanded.
§ Polystyrene — this is extruded foam and comes in a variety of colors that include green, pink, purple or gray and these are usually plates that are smooth.
§ Polymethacrylimide — a very expensive material and it is rigid foam with a low density.
§ Polypropylene — which is flexible and expanded and can be a solution to protection from shock.
§ Polyethylene — these are foams that are tear resistant and flexible.
With the CNC Foam Cutter you can form a more prism like or tapered shape in the block of foam. A hot-wire that is under a high tension to cut the foam. There are stepper motors that provide the precision and accuracy for the work and there are components called races that control the stiffness of tension of the wire.
Some CNC Foam Cutter also offer different attachments like a lathe and this allows the machine to use either preformed or stretched wire. Also the machine is able to cut a variety of shapes including spirals or blocks of ornamental structure like balusters for stairways or planters.
There are a variety of uses for foam cutters that include making signage, model airplanes, protyping, lost foam cutting and more. The CNC Foam cutter is a flexible machine and is only limited by the imagination.
Although many people prefer to purchase a CNC foam cutter there are also plans on the Internet that show how to make them inexpensively for hobbyists and others who are interested in working with foam.
Visit CNCInformation today to get your free ebook on CNC Basics. CNC Information is a new community website that gives you all of the information you need for CNCers. Visit today for a free introductory offer of a free ebook on CNC.
Still Innovating - Silicon Graphics Unveils Vue
Silicon Graphics is best known as a hardware company, with a long and glorious history of technological innovation, crazy designs, and powerful graphics. Less well known is the vast amount of software produced by Silicon Graphics. Along with normal products like compilers and graphics tools, Silicon Graphics also contribute a lot to Open Source projects.
The companies’ latest software offering, on the other hand, represents a major departure for SGI. The VUE suite is a collection of tools that, at it’s core, allows remote visualisation. Using VUE users are able to manipulate complex graphics on devices as simple as PDAs and laptops.
VUE stands for Visual User Experience, and is made up of five separate software components.
FusionVUE combines multiple sources of information, producing an easy to use graphical display. SoftVUE converts any standard platform into part of a visualisation and computing platform. PowerVUE provides powerful realtime visualisation. RemoteVUE allows the remote display of complex graphics. Finally, EventVUE provides a realtime graphical overview of complex situations or events.
It’s clear that the VUE suite has the power to replace many large workstations on users’ desktops, relying instead on the abilities of a large compute system in a data centre. Playing to many of Silicon Graphics recent products, the VUE suite promises a return to Silicon Graphics groundbreaking lead in computer graphics.