How To Choose a Mobile Phone

Today's mobile phones are a necessity for anyone and everyone. Unlike those of a decade or so ago - mobile phones were only expensive business accessories. They were bulky and ugly - often hidden inside a bag. Just as the use of mobile phones have increased so has their beauty and their functions. Maybe that is why the sales of mobile phones increased to over one billion during 2006.

Mobile phones (cell phones) are carried by most everyone over the age of six. At the youngest end of the spectrum cell phones such as the Firefly can be programed to only dial mom/dad or 911. As the user matures the mobile phone features expand dramatically.

Fashion dicatates many mobile phone purchases. One mobile phone that fits this category is the Motorola Razr. Red, pink, blue, green and basic black is just a few of the available colors. Fashion does not stop there. Skins (decorative covers) can be snapped onto the outside of a mobile phone to add both protection from scratches and dings and personalized style.

Form is another style feature mobile users crave. Buzz words include flip (clamshell) and slider.

Flip mobile phones typically hinge in the middle. This form protects the screen and keeps random numbers from being dialed accidently. Flip phones are offered by most popular manufactures such as Motorola, Nokia, Samsung, Sony, LG and Sanyo.

Slider mobile phones are a variation of the flip. The keys are covered and the screen is left exposed. This form is often (not always) used for Smartphones and PDA phones with full QWERTY keyboards. One of the first mobile phones of this form was the T-Mobile Sidekick. Slider mobile phones are offered by manufactures such as HTC, Sony, Samsung, Nokia and Kyocera.

The iPhone is one that may change the form of many future mobile phones. No keyboard - only one large touch screen. No need for a stylus - just a finger tip. No need for extra protection - very strong screen resists scratches and breakage.

Features cause the greatest stress level when choosing a mobile phone. No one phone provides all of the available features across the market.

Decide how you will use the mobile phone. Making and recieveing calls are the obvious uses but what else do you enjoy? Bluetooth, music, didital photos, videos, web surfing, email, IM, MMS or exercise. Exercise? Yes, the Nokia 550, the Samsung SPH-S400, and the Sony Ericsson W580 are a few that count your steps.

Function should probably be the most important feature. Why pay for a 5 megapixel digital camera as in the Nokia N95 or the in phone video editing feature of the Samsung G800 when you cannot have a camera phone inside your workplace?

On the other hand if you need expanded communication options the Blackberry mobile phones would be a great choice. For document editing abilities a PDA mobile phones such as a Palm or Pocket PC would be great options.

Cost of mobile phones can place a large dent into a family budget especially when multiple mobile phones are in use. Although most major carriers offer great prices on family plans, each phone may be upcharged per extra activated features.

High usage customers should consider an unlimited data package. Costs are approximately $30 per month (additional to normal charges) per phone

Basics of Web Design

Graphics

1. Think small, like 10-12KB per image. Yes, depending on the source, the number of broadband users is going up. But slow pages are still really annoying, even if you're on a T1. And huge images are a primary cause of slow pages. It's easy to optimize your images.
2. Always use graphics that fit the content. Just because you have an adorable photo of your dog doesn't mean you should have it on your Web site about Web Design (sorry, Shasta...). The main exception I would make to this is for "design" images. These are photos or graphics that help make up the design of the page, and are not intended to illustrate the content.
3. Do not use images that blink or move or change or rotate or flash or do anything on your page. Or use them sparingly. There have been many studies that show that flashing graphics are distracting and annoying to people. In fact, in one focus group I watched the browsers actually physically cover up flashing graphics so that they could read the rest of the page.

   Layout

4. Stick with standard layouts. I've seen some pages that use 6 or 8 frames on one page. Another site used a layout where you had to scroll to the right to read everything on the page (but you never had to scroll down). These layouts are cute, and you might find them fun to build, but they will drive your readers nuts. The reason that the 3-column layout is so popular on Web sites and newspapers is because it works. You might think it's boring, but you'll keep more readers if you stick with something simple that they can understand.
5. Whitespace is more than the CSS property, it is a function of your layout. You should be aware of the whitespace on your pages and how it affects how the content is viewed. Whitespace is just as important in a Web layout as it is in a paper layout.
6. Use your graphics as elements in your layouts. Graphics can be more than just graphics when you use them as actual elements in your layouts. An extreme example is when you wrap text around an image, but any image you have on your site is a layout element and should be treated as such.

   Fonts

7. Serif for headlines and Sans-Serif for text. If you've taken any type of print design, this might be exactly the opposite of what you were taught. But the Web is not print. Sans-serif fonts are much easier to read on computer monitors because the screen resolution is not as high as in print. If you use serif fonts for normal text, the serifs can blur together on the screen making them hard to read. Your printer friendly page should use the opposite fonts (serif for headlines and sans-serif for text).
8. Limit the number of different fonts. One of the best ways to make your Web site look amateurish is to change the font over and over. Sure, it's possible to do, but limiting your page and site to 2 or possibly 3 standard font families is easier to read and looks more professional.
9. Use standard font families. Yes, you can choose to use "Rockwood LT Standard" as your font on your page, but the chances that one of your readers will have that font as well is pretty low. Sticking with fonts like Verdana, Geneva, Arial, and Helvetica may seem boring, but your pages will look better and the designs look correct on more browsers.

   Advertising

10. Don't be greedy. If you have any control over the number of ads on your site, be aware that your readers are not coming to read the ads, they are coming for the content. If the ads overwhelm the page content, many readers won't stick around long enough to read your purple prose. Yes, it's important to make money from your Web site, but if your ads drive people away, you'll ultimately lose money.
11. Treat ads as you would any other image. Keep them small, avoid blinking/flashing, and keep them relevant. Just because you can have an ad on your site, doesn't mean that you should. If the content is relevant to your readers, they're more likely to click on the ad.

    Remember Your Readers

12. Test your pages in multiple browsers. Writing Web pages that work only on the most modern browser is both stupid and annoying. Unless you are writing a Web site for a corporate intranet or a kiosk where the browser version is completely fixed, you'll have problems with people not being able to view your pages.
13. The same is true for operating systems. You can't assume that just because your page works in IE5.0 for Windows it will work in IE5.0 for Macintosh.
14. Write content that they want. Unless you're writing a site purely for yourself (and if you are, why is it posted to the Web?), make sure that your content covers topics that your readers want to read.

Data management and storage

 

Protect Your Most Critical Asset

Whether you want to cut down on unexpected and expensive downtime, meet data retention compliance regulations or achieve recovery point and time objectives, Agilysys will find a high performance Data Management & Storage solution for you. Your unique environment can be better utilized, and our experts can show you how. Our practices will help your organization manage its data and storage efficiently while adapting to growth.

Our Data Management & Storage offerings include:

Business Continuity & Disaster Recovery Planning: Be prepared for the unforeseen with help from Agilysys. Our solutions can help improve resource allocation and overall operational efficiency, maintain high infrastructure availability and protect your valuable data in the event of an emergency.

Backup, Recovery & Archiving:

Our Backup, Recovery & Archiving solutions will enable you to recover files more quickly and efficiently while enhancing security and compliance accountability. We offer one-stop detailed planning and design, implementation activities and knowledge transfer using a proven best practices approach.

Data Center Optimization:

Whether you want to evade overly-complicated upgrades and high IT support costs or avoid distributed complexities and security risks, a more efficient data center can deliver higher levels of service at lower costs.

Business Intelligence/Data Warehousing :

Using the best technologies from industry leading vendors like Sun Microsystems, SAS and Greenplum, our world class services organization shows you how to leverage enterprise data to maximize value, minimize risk and optimize performance. If your company isn't competing on analytics, now is the time to take a look at how doing so can improve enterprise performance and increase your bottom line.

Storage & Storage Area Network (SAN) Services:

Supporting everything from SAN Design & Implementation activities through documentation and knowledge transfer, Agilysys serves as a single source resource and can meet all your storage needs, ensuring successful and scalable operations support now and in the future

Tiered storage

.Tiered storage is a data storage environment consisting of two or more kinds of storage delineated by differences in at least one of these four attributes: price, performance, capacity and function.

Any significant difference in one or more of the four defining attributes can be sufficient to justify a separate storage tier.

Examples:

Disk and tape: two separate storage tiers identified by differences in all four defining attributes.

Old technology disk and new technology disk: two separate storage tiers identified by differences in one or more of the attributes.

High performing disk storage and less expensive, slower disk of the same capacity and function: two separate tiers.

Identical enterprise class disk configured to utilize different functions such as RAID level or replication: a separate storage tier for each set of unique functions.

Note: Storage Tiers are not delineated by differences in vendor, architecture, or geometry except where those differences result in clear changes to price, performance, capacity and function

 

 

 

Hierarchical storage management (HSM)

.Hierarchical storage management (HSM) is a data storage technique which automatically moves data between high-cost and low-cost storage media. HSM systems exist because high-speed storage devices, such as hard disk drive arrays, are more expensive (per byte stored) than slower devices, such as optical discs and magnetic tape drives. While it would be ideal to have all data available on high-speed devices all the time, this is prohibitively expensive for many organizations. Instead, HSM systems store the bulk of the enterprise's data on slower devices, and then copy data to faster disk drives when needed. In effect, HSM turns the fast disk drives into caches for the slower mass storage devices. The HSM system monitors the way data is used and makes best guesses as to which data can safely be moved to slower devices and which data should stay on the fast devices.

In a typical HSM scenario, data files which are frequently used are stored on disk drives, but are eventually migrated to tape if they are not used for a certain period of time, typically a few months. If a user does reuse a file which is on tape, it is automatically moved back to disk storage. The advantage is that the total amount of stored data can be much larger than the capacity of the disk storage available, but since only rarely-used files are on tape, most users will usually not notice any slowdown.

HSM is sometimes referred to as tiered storage.

HSM (originally DFHSM, now DFSMShsm) was first[citation needed] implemented by IBM on their mainframe computers to reduce the cost of data storage, and to simplify the retrieval of data from slower media. The user would not need to know where the data was stored and how to get it back; the computer would retrieve the data automatically. The only difference to the user was the speed at which data was returned.

Later, IBM ported HSM to its AIX operating system, and then to other Unix-like operating systems such as Solaris, HP-UX and Linux.

HSM was also implemented on the DEC VAX/VMS systems and the Alpha/VMS systems. The first implementation date should be readily determined from the VMS System Implementation Manuals or the VMS Product Description Brochures.

Recently, the development of Serial ATA (SATA) disks has created a significant market for three-stage HSM: files are migrated from high-performance Fibre Channel Storage Area Network devices to somewhat slower but much cheaper SATA disks arrays totalling several terabytes or more, and then eventually from the SATA disks to tape.

The newest development in HSM is with hard disk drives and flash memory, with flash memory being over 30 times faster than disks, but disks being considerably cheaper.

Conceptually, HSM is analogous to the cache found in most computer CPUs, where small amounts of expensive SRAM memory running at very high speeds is used to store frequently used data, but the least recently used data is evicted to the slower but much larger main DRAM memory when new data has to be loaded.

In practice, HSM is typically performed by dedicated software, such as IBM Tivoli Storage Manager, Oracle's SAM-QFS, Quantum, SGI Data Migration Facility (DMF), StorNext, or EMC Legato OTG DiskXtender.

Refrence ::

http://www.agilysys.com/home/Partners/Sun/Data+Management+and+Storage.htm

http://www.qstar.com/products/qstar-software-products/network-migrator/

http://hep.ac.uk/papers/storage_and_dm.pdf

   In The Name Of Allah

My name is Asmaa Mohammed, 

I study Computer Information Systems, the level of the fifth .

 
 I Enjoy studying information technology programs, and I hope that completed this course the outcome of wonderful information beneficial to me and serve my community

syllabus

I read and agree to the syllabus