احترف البحث في جوجل

الكثير يستخدم موقع جوجل

لكن الكثير منا لا يعرف كيف يستخدمه استخداما كاملا باحتراف

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1- العلامة +

الفائدة منها هي البحث عن جميع المواقع التي تحوي جميع الكلمات ...

مثال :

لكي تبحث عن المواقع التي تحوي الكلمتين (المفكرة) و (الدعوية) ضع البحث بهذه الصورة

المفكرة + الدعوية

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2- العلامة -
الفائدة منها هي البحث عن جميع المواقع التي تحوي كلمة و لاتحوي الكلمة أخرى

مثال :

لكي تبحث عن المواقع التي تحوي الكلمة (المفكرة) و لا تحوي الكلمة (الدعوية) ضع البحث بهذه الصورة : -

المفكرة-الدعوية

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3-علامات التنصيص (" " )

الفائدة منها هي البحث عن جميع المواقع التي تحوي ما بداخلها بالكامل و بنفس الترتيب

مثال : -

لكي تبحث عن المواقع التي تحوي الجملة (المفكرة الدعوية) و بالكامل و بنفس الترتيب ضع البحث بهذه الصورة
"المفكرة الدعوية"

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4- الرابط ( OR)

الفائدة منه هي البحث عن جميع المواقع التي تحوي إحدى الكلمات أو جميعها

مثال : -

لكي تبحث عن المواقع التي تحوي الكلمة (الدعوة) أو الكلمة (الدعوية) أو كليهما معاً ضع البحث بهذه الصورة : -

الدعوة OR الدعوية

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5 - (intitle )

الفائدة منه هي البحث عن جميع المواقع التي تحوي كلمة في العنوان المخصص للمواقع على google

مثال : -

لكي تبحث عن المواقع التي تحوي الكلمة (3alamozy) في العنوان الظاهر على google ضع البحث بهذه الصورة : -

intitle:
3alamozy

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6 - ( allintitle )

نفس الفائدة السابقة و لكن الفرق أنه هنا بإمكانك أن تبحث عن أكثر من كلمة

مثال : -

لكي تبحث عن المواقع التي تحوي الكلمات channels و
3alamozy و ذلك في العنوان الظاهر على google ضع البحث بهذه الصورة : -

allintitle:
3alamozy channels

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7 - ( inurl )

الفائدة منه هي البحث عن جميع المواقع التي تحوي كلمة في عنوان الموقع على الانترنت

مثال : -

لكي تبحث عن المواقع التي تحوي الكلمة
3alamozy و ذلك في عنوانها على الانترنت ضع البحث بهذه الصورة : -

inurl:
3alamozy

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8 - ( allinurl )

نفس الفائدة السابقة و لكن الفرق أنه هنا بإمكانك أن تبحث عن أكثر من كلمة

مثال : -

لكي تبحث عن المواقع التي تحوي الكلمات school و teacher و book و ذلك في عنوانها على الانترنت ضع البحث بهذه الصورة : -

allinurl:school teacher book

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9 - ( cache)

الفائدة منه هي الاستفادة من موقع google لسحب الموقع المراد بالكامل مع الإشارة إلى الكلمات المراد البحث عنها

مثال : -

نريد أن نبحث عن كلمة live في الموقع
www.3alamozy.com ضع البحث بهذه الصورة : -

cache:
www.3alamozy.com live

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10 - ( link )

الفائدة منه هي إيجاد المواقع التي تحوي رابطاً للموقع المراد البحث عنه

مثال : -

نريد أن نبحث عن المواقع التي تحوي الرابط 
www.3alamozy.com ضع البحث بهذه الصورة : -

link:
www.3alamozy.com

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11 - ( related )
الفائدة منه هي إيجاد الروابط التي يكون فيها الموقع المذكور الصفحة الرئيسية

مثال : -

نريد أن نبحث عن الروابط الموجودة في الموقع
www.3alamozy.com ضع البحث بهذه الصورة : -

related: 
www.3alamozy.com

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12 - ( info )

يعطيك معلومات عن الموقع الذي تريده

مثال : -

نريد معلومات عن الموقع 
www.3alamozy.com ضع البحث بهذه الصورة : -

info:
www.3alamozy.com

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13 - ( stocks )

يستخدم كثيراً مع الرموز لإعطائك معلومات مفصلة مثلاً عليك وضع رمز شركة لا أن تضع اسمها

مثال : -

لكي تحصل على معلومات عن Intel و Yahoo ضع البحث بهذه الصورة : -

stock: intc yahoo
منتدى المعالي بتصرف

================================

يعد جوجل من أكثر محركات البحث استخداما وشهرة نظرا لمزاياه الجيدة ودعمه للغة العربية ، إلا أن بعض المستخدمين يتذمر من الطريقة التي يظهر فيها جوجل نتائجا لا علاقة لها بالكلمة المدخلة في صندوق البحث ، أو لنكن منصفين ونقول أنه يعرض نتائج ذات صلة بعيدة وغير دقيقة. ولحسم هذه المشكلة التي تواجه الكثير من مستخدمي الإنترنت نقدم طرقا تساعد المستخدم للحصول على نتائج دقيقة عند استخدام محرك البحث، ونورد فيما يلي بعض الأمثلة لتكون عونا للمستخدمين في بحثهم باستخدام جوجل ولتوفر عليهم عناء البحث في الكم الهائل من نتائج البحث والتي يكون أغلبها غير نافع:


- إدخال كلمتين مع وجود فراغ: عند إدخال كلمتين مع وجود فراغ بينهما يظهر غوغل نتائجا متضمنة الكلمتين معا.
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- كتابة كلمة ''أو'' Or بين كلمتين: يظهر جوجل صفحات تضم إما الكلمة الأولى أو الثانية.
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- '' '': إذا كنت تعاني من عرض النتائج ذات الصلة البعيدة فما عليك سوى كتابة الكلمة التي تريد البحث عنها بين علامتي اقتباس لتكون نتائج البحث متوافقة بالضبط مع الكلمة. فعند كتابة كلمة ''Plane'' بين علامتي اقتباس تحدد بشكل دقيق مجال البحث عن هذه الكلمة حصرا.
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- - : لتضييق الخناق على نتائج جوجل في عملية البحث يمكن مثلا كتابة virus-computer لتحدد بذلك نطاق البحث عن كلمة virus وليس عن كلمة .computer
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- الأرقام: قد تساعد الأرقام المستخدم في عملية البحث باستخدام جوجل، فالبحث عن عبارة "Lord of the rings" مثلا يعتبر مضيعة للوقت بعرض محرك البحث نتائج تتجاوز مئات المواقع ولكن يمكن تسهيل المهمة بإضافة الرقم I بالرومانية مثلا .Lord of the rings+I
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- ~ : للبحث عن الكلمة ومرادفاتها يمكن كتابة الكلمة مسبوقة بعلامة ~ والتي يمكن كتباتها بنقر shift+~ الموجودة تحت زر ESC، فكتابة ~auto loan ونقر الأمر بحث سيرجع نتائج تتضمن الكلمة auto ومرادفاتها مثل car وغيرها.
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- efine إذا كنت تبحث عن تعريف كلمة ما فما عليك سوى كتابة define: متبوعا بالكلمة التي تريد الحصول على تعريفها ككتابة defineormalization.
- * : سيرجع كتابة رمز النجمة shift+8 بين كلمتين نتائج تضم الكلمتين مع وجود كلمة واحدة تفصل بينهما.
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: -:site إذا أردت أن تقتصر عملية البحث على موقع واحد فما عليك سوى كتابة كلمة :site متبوعا باسم القسم الذي يريد المستخدم تفحصه. وتلعب هذه العملية دورا مهما عند البحث في مواقع الجامعات والمصارف فمثلا تقود عملية البحث عند كتابة site:
www.3alamozy.com المستخدم إلى قسم admission في جامعة .Stanford

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- كلمة ... كلمة: يستخدم هذا الخيار عند البحث عن معلومة ضمن نطاقين بكتابة الكلمة المراد البحث عنها وحصر النتائج بوضع ثلاثة نقاط تفصل بين مجالي البحث كالبحث عن مشغلات الأقراص الرقمية التي يتراوح سعرها بين الخمسين والمئة دولار .Dvd player 50$ ...100$
: -:date تستخدم للبحث ضمن فترة زمنية محددة فكتابة Olympics date سيقود المستخدم إلى ارتباطات بكلمة Olympics خلال الأشهر الثلاثة الماضية.
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- :Link: تعرض كتابة كلمة لينك link المستخدم إلى مواقع ذات صلة بالكلمة التي يبحث عنها المستخدم فمثلا عند كتابة link:
www.3alamozy.com سيعرض جوجل العديد من المواقع ذات الصلة بكلمة .Stanford

: -:Info إذا كنت تريد الحصول على معلومات عن موقع ما فما عليك إلا طباعة الأمر info: متبوعا بالموقع ككتابة
 

Too much screen time bad for kids' behavior

New research suggests that kids who spend more than two hours of screen time a day run a higher risk of behavior problems.
(Credit: kellyv/Flickr)
As kids in the '80s, my twin brother and I were allowed to watch about an hour of TV a week, which we typically used up on Saturday morning cartoons and which resulted in near total pop culture illiteracy. The dedicated hour brought on such intense euphoria that one time, when our father fell through the kitchen floor and broke a few ribs (it was an old house), we looked at him, saw he was still alive, and went back to watching Bugs Bunny.
For years this anecdote served as our central argument for more screen time (which soon included our Atari), so long as it was in moderation.
Whilst low levels of screen viewing may not be problematic, we cannot rely on physical activity to compensate for long hours of screen viewing.
--Angie Page, lead author
Well, "moderation" has just been given a number, and it is two hours a day, according to new research out of the University of Bristol's Centre for Exercise, Nutrition and Health Sciences in the UK. Among the 1,000 10- to 11-year-olds studied, more than two hours is related to higher psychological difficulty scores.
The researchers measured psychological well-being via a questionnaire that rated each child's emotional, peer, conduct, and hyperactivity issues. The kids had to respond to statements such as 'I am often unhappy, down-hearted or tearful' or 'I generally play alone or keep to myself' with one of three answers: true, somewhat true, or not true. So the results rely, at least in part, on the kids' abilities to accurately self-report.
Perhaps most surprising is that these numbers were consistent regardless of physical activity levels. Lead author Angie Page says it is time to reconsider the belief that we can balance out screen time with other activities.
"Whilst low levels of screen viewing may not be problematic, we cannot rely on physical activity to compensate for long hours of screen viewing," said Page. "Watching TV or playing computer games for more than two hours a day is related to greater psychological difficulties irrespective of how active children are."
In other words, according to the results of these questionnaires, the kid who spends hours every day playing soccer and constructing tree forts and skipping over sidewalk cracks runs the same risk of behavioral problems as the kid who is couch-bound, so long as they're both dedicating more than two hours a day to watching a screen of some type.
The study, which comes out of the Personal and Environmental Associations with Children's Health (PEACH) project, appears online today in the journal Pediatrics.
Elizabeth Armstrong Moore is a freelance journalist based in Portland, Ore. She has contributed to Wired magazine, The Christian Science Monitor, and public radio. Her semi-obscure hobbies include unicycling, slacklining, hula-hooping, scuba diving, billiards, Sudoku, Magic the Gathering, and classical piano. She is a member of the CNET Blog Network and is not an employee of CNET.

http://www.3alamozy.com

What's inside the first Windows Phone 7 devices?

Qualcomm's Snapdragon silicon made a sweep of all of the Windows Phone 7 smartphones announced today, rendering the hardware from various manufacturers relatively homogeneous inside.
HTC HD7 Windows phone.
HTC HD7 Windows phone
(Credit: Microsoft)
Against a backdrop of phone announcements from companies such as Samsung, HTC, and Dell, Qualcomm CEO Paul Jacobs and Microsoft CEO Steve Ballmer posted a video today discussing the relationship between the two companies.
"Qualcomm and Microsoft have a long history of working together to optimize the mobile operating system for Qualcomm chips and platforms...We're excited to bring a new generation of Windows phones exclusively featuring Snapdragon mobile processors," Ballmer said.
"This really shows...what can happen when people bring together great software and great hardware," said Jacobs in the video.
But this collaboration also brings Windows PC-like hardware uniformity. Just as the PC world has the Windows operating system and Intel processors, this first crop of Windows Phone 7 smartphones feature a Microsoft OS and Qualcomm silicon.
"If all of them feature the same hardware (internal) and same operating system, what happens to the differentiation?" asked Ashok Kumar, managing director and analyst at Rodman & Renshaw. Other smartphone processor suppliers include Texas Instruments, Marvell Technology, and Samsung, who provide chips for Android and BlackBerry phones, among others.
And it remains to be seen if Windows Phone 7 devices can find a place in a very crowded market. "I think one of the biggest questions is what are the prospects of Windows Phone 7," said Kumar. "Most of the resources are targeted toward Apple and Android and then you have RIM and the QNX (operating system). There are many questions here, not least of which is what will the receptivity of the consumer be?" Kumar said.
Windows Phone 7 smartphones include the Dell Venue, HTC 7 Mozart, HTC 7 Trophy, HTC HD7, HTC Surround, HTC 7 Pro, LG Quantum, LG Optimus 7, Samsung Focus, and Samsung Omnia 7. Inside these products is Qualcomm's 1GHz application processor, a 3D graphics function, support for high-megapixel cameras, and the requisite 3G and Wi-Fi connectivity, among other functions..

The Qualcomm chipset supports a 1GHz processor, 3D graphics, 12-megapixel cameras, and wireless and broadband connectivity, among other functions.
The Qualcomm chipset supports a 1GHz processor, 3D graphics, 12-megapixel cameras, and wireless and broadband connectivity among other functions.
(Credit: ARM)
Brooke Crothers has been an editor at large at CNET News, an analyst at IDC Japan, and an editor at The Asian Wall Street Journal Weekly, among other endeavors, including co-manager of an after-school math-and-reading center. He writes for the CNET Blog Network and is not a current employee of CNET. Disclosure.

Urban model for cybersecurity ed: San Diego

8diggsdigg

Darin Andersen, chief operating officer at Eset.
Darin Andersen, chief operating officer at Eset
(Credit: Eset)
A Slovakian antivirus company with its American headquarters in San Diego is trying to make good cybersecurity just as much a part of the local fabric as good beaches and Chargers football.
Eset launched the Securing Our eCity program with the San Diego Chamber of Commerce two years ago to offer free workshops to consumers and small businesses on how to stay safe online. Today it has become a model for similar initiatives being launched in Malaysia, Buenos Aires, and London. And it helped with the creation of the Stop Think Connect campaign launched last week as part of National Cyber Security Awareness month.
"San Diego is the first community to implement the messaging in a complete awareness campaign," with billboards, public service announcements, and radio and print ads, Darin Andersen, chief operating officer at Eset, told CNET in an interview this week.
The Securing Our eCity program isn't just for consumers and businesses plagued by spam, phishing attacks, and identity fraud scams. It's also helping police, city officials, educators, and critical infrastructure operators keep basic services up and running.
In July, the head of a utility company in the San Diego area that was hit by the Stuxnet worm, which specifically targets critical infrastructure, confided in Andersen at a symposium held by the Securing Our eCity program. The utility needed help doing forensics to determine how bad the infection was and to figure out how to mitigate the impact. Using his Securing Our eCity connections, Andersen connected the utility with experts in the area and the rest is history, as they say.
"They were pleased that they had a resource in the community that could help them with that," Andersen said, declining to identify the utility involved. "This represents the power of people working at a local level to solve problems that have a big impact on many people."
Eset came up with the idea for the Securing Our eCity program when researchers there realized that even the best security software and hardware can't totally protect computer users from the growing number of social-engineering attacks that are designed to trick people into putting themselves at risk. These include the phishing e-mails that look like they come from a bank, as well as the Facebook money requests from accounts of friends who say they are stranded in a strange land, and the Twitter posts with links that lead to malware instead of videos of cheerleaders.
The program started out providing free workshops to consumers and small businesses on how to recognize and avoid the threats online. About 2,400 people have gone through 150 different training sessions, and many others have done online sessions, according to Andersen.
The program also helps cities and organizations get federal grants to be used for education and strengthening cybersecurity. For instance, the Department of Homeland Security recently awarded the City of San Diego $325,000 to be used on education and protecting the water and power plants, and other cyber infrastructure in the city, he said.
The Securing Our eCity program also holds workshops at electronics retailer Micro Center's stores around the country, as well as offers training to the San Diego Mayor's office and school district and the U.S. Navy, which has historically had a major presence in the area.
Anyone can benefit from the training, he said, recounting anecdotes of some of the individuals the program has helped. For instance, there was the grandmother of a high-level Microsoft employee who got a phone call from someone claiming to be a relative in need of money on a trip. She sent the money but won't be making that mistake again, thanks to the program and some help from some people at the Microsoft security team.
Then there were the two lawyers who were separately contacted via e-mail by someone outside the U.S. who claimed to want legal representation to prosecute a case in this country and said they needed help completing a foreign financial transaction. The lawyers agreed to accept money into their bank accounts and transfer it on, but then realized they had been scammed when the original transfer was reversed and they found themselves out thousands of dollars. "They didn't know the laws around foreign transfers," Andersen said.
These scams that prey on people's trust can't be prevented with software, a point Eset has made to Apple. Last year, an Eset survey found that proportionally more Mac users feel safe online than PC users. Regardless of how secure the operating system really is, that elevated sense of security puts Mac users at more risk than PC users, said Andersen. "Most bad guys target technical attacks against PCs, but behavioral attacks target both platforms," he said.
Because the concept of antivirus protection "doesn't resonate" with Mac users who don't think they need it, Apple talked to Eset about providing Securing Our eCity education programs in the Mac stores, Andersen said. "Somewhere along the way it was suggested putting links to cybersecurity training directly in the Eset Cybersecurity for Mac antivirus product," he said.
The software, which will be available for download and sold in Mac stores in about a month, will offer a way for users to do virtual workshops on how to stay safe online, according to Andersen.
"This is the first Mac antivirus product that includes education directly in the product," he said.
Elinor Mills covers Internet security and privacy. She joined CNET News in 2005 after working as a foreign correspondent for Reuters in Portugal and writing for The Industry Standard, the IDG News Service, and the Associated Press. E-mail Elinor.

http://www.3alamozy.com

Sony LCDs build in Google TV, cost $599 and up


Sony NSX-GT1 series of TVs is the first to incorporate Google TV.
(Credit: Sony Electronics)
Today Sony announced full details on its NSX-GT1 line of LCD TVs and its NSZ-GT1 Blu-ray player, the first products of their kind equipped with the Google TV service.
The TVs range in size from 24-46 inches, in estimated selling price from $599 to $1,399, and will ship starting October 16 (preorders available now at Sonystyle.com and Best Buy.com). The Blu-ray player is available at the same time for $399.

Sony's NSZ-GT1 Google TV-equipped Blu-ray player.
(Credit: Sony)
The promise of Google TVs is to integrate all available video content--regardless of whether it comes from cable, satellite, antenna, or the Internet (like Netflix or YouTube)--onto one screen that you can search as easily as Google.com searches the Web. The Sony TVs and Blu-ray player come with a special remote control with a keyboard, can control other devices in your AV system, and even enable you to surf the entire Web with a built-in Chrome browser. Aside from actually hooking a PC to your TV, it's the closest you likely come to converging the two devices.
Google TV's software offering was first introduced on the $300 Logitech Revue set-top box, which still provides the least expensive way to add the service to an existing system. Sony integrates Google's service into the LCD TVs, so no additional box is required--although most people will hook the Sony devices to a cable or satellite box at least. One major difference between Sony and Logitech, however, is that Sony's TVs and Blu-ray player will not allow streaming of music or video files from in-home PCs or other networked devices at launch, although Sony says this feature is in the works.

http://www.3alamozy.com  

Pirates of the Caribbean 4 'to be made in 3D'

Johnny Depp in Pirates of the Caribbean: Dead Man's Chest
The fourth Pirates of the Caribbean film is to be made in 3D, according to reports from the US.
Disney are planning to shoot the movie in the format rather than converting it at a later stage, Variety says.
The film, subtitled On Stranger Tides, will see Johnny Depp reprise his role as Captain Jack Sparrow and is due for release in May 2011.
Disney recently scored a box office success with Alice in Wonderland, which was available in 3D.
The availability of the format helped to boost the film's cinema takings.
Prince of Persia: The Sands of Time, another Disney film which is due for UK release on Friday, has remained in the conventional format.
It was filmed in 2008 and did not undergo a post-production conversion into 3D.


http://www.3alamozy.com  

Pirate Johnny Depp makes surprise school visit

Hollywood star Johnny Depp has made an unannounced visit to a London primary school after receiving a letter from one of its pupils.
The actor turned up at the school in Greenwich, south-east London, dressed as his Pirates of the Caribbean alter-ego Captain Jack Sparrow.

He said nine-year-old Beatrice had written to Captain Jack, asking him to lead a mutiny against her teachers.
Depp, 47, has been filming the latest instalment of the franchise in London.
After his arrival, a special school assembly was called and the film star - along with other members of the cast dressed in full costume - walked in.
Depp produced Beatrice's letter and performed for the children for 15 minutes.
But he told the schoolgirl that a mutiny might get them into trouble.
Footage of the surprise appearance was sent to CBBC's Newsround programme.

http://www.3alamozy.com  

First human embryonic stem cell trial

Let me give you two scenarios. First the wildly optimistic: that thirty years from now we will look back on today as one of the most significant in the history of modern medicine; the day everything began to change. The second is pessimistic: that in the near future we will see that embryonic stem cells did not live up to the hype, dashing the hopes of patients.
The truth is no-one can be sure which of the above will come true, or something more prosaic but still useful in terms of tackling disease.
So much has been written about embryonic stem cells that it seems hard to fathom that the first officially approved human trial is only now underway. To supporters they represent the best hope for repairing organs and curing disease.
The dream is that - many years from now - you will be able to use stem cells to repair a damaged heart, cure diabetes and restore function to patients with spinal cord injury.
We know that adult stem cells work, for example bone marrow transplantation. There have been other transplant techniques using adult stem cells.
But until now, human embryonic stem cells had never been injected into a patient - at least not in a licensed trial.
Now, Geron, a biotech firm in California has announced that it has begun a safety trial where embryonic stem cells will be injected into half a dozed patients who recently suffered spinal cord injuries. The first patient, whose details have not been released, has already had the treatment. The amount of cells injected will have been tiny because this "first in man" trial is simply there to test safety. Only if no harm is done will increasingly bigger doses be given, and only then will scientists know whether it can help restore some function.
In animal trials, paralysed rats did regain movement. But, as many trials have shown in the past, that does not assure success in humans.
Not even the most enthusiastic supporters of this research are suggesting that paralysed patients will be walking again as a result of this study. But even a minor improvement in function would be of huge benefit.
Professor Chris Mason from University College London said this is an exciting moment: "It's important because these are embryonic stem cells - the most potent we have available for therapy. They can make all the 200 cell types in the body and they can make them in quantity. If this therapy is successful, and that might take five to ten years, then we will be able to manufacture it in the scale we need."
The trial will spark controversy in the United States. Critics argue that it is wrong to use cells derived from human embryos because they would have been destroyed in the process, when they are still smaller than a pinhead. In one of his first actions as President, Barack Obama lifted many restrictions on federal funding of embryonic stem cell research when he came to office last year. There is currently a legal dispute over federal funding which is going through the US Court of Appeal.


http://www.3alamozy.com 

Surgeons creating new ears for girl from Trinidad


Surgeons work on Kade Romain The team of surgeons will construct both ears for 15-year-old Kade
A team of medics in Scotland is creating new ears for a 15-year-old girl from Trinidad.
Kade Romain was born without ears and missing part of her ear canal, leaving her partially deaf and facing a future begging for a living.
The medical team from the Spire Murrayfield hospital in Edinburgh has given its time for free to construct new ears so that she faces a brighter future.
Kade came to Scotland after meeting Robina Addison, a Scottish dance teacher, who was visiting the orphanage Kade was living in.

Start Quote

At a conversational distance it wouldn't be obvious that it's a reconstructed ear”
End Quote Ken Stewart Surgeon
"I fell in love with her the first time I saw her because she was such a character," Ms Addison said.
Because she was born without ears, Kade couldn't go to mainstream school and was attending a day care unit for children who are mentally handicapped.
"I would liken it to a sanatorium here 40 or 50 years ago," Ms Addison added.
Inspired to act, she organised a temporary visa for Kade to come to Scotland for a very unusual operation.
Ken Stewart, one of the UK' s top experts in ear reconstruction, said: "We're hoping to produce an ear which is a very reasonable image of a natural human ear.
"At a conversational distance it wouldn't be obvious that it's a reconstructed ear."
<div class="warning"> <img class="holding" src="http://news.bbcimg.co.uk/media/images/49461000/jpg/_49461389_jex_834222_de23-1.jpg" alt="kade Romaine with doctor and nurse" /> <p><strong>Please turn on JavaScript.</strong> Media requires JavaScript to play.</p> </div>
Each ear will be operated on separately
Rib cartilage
Mr Stewart will construct two new ears for Kade, and she'll be fitted with a hearing aid to restore her hearing.
"One in 6,000 children are born with at least one missing ear," he said. "We also do it regularly for people who lose their ears through trauma or through skin cancer."
The surgery is normally carried out on the NHS but as Kade is a foreign national she doesn't qualify for free healthcare.

Start Quote

She's the one who made the decision and this time next year she'll be a new person”
End Quote Robina Addison
Instead the Spire Murrayfield hospital offered its facilities and the surgical team worked for free.
In a seven-hour operation, Mr Stewart constructed the first ear, with cartilage taken from Kade's rib-cage.
He trimmed this into the shape of an ear to insert under a flap of skin where her ear should be.
Unused cartilage was chopped up and inserted back into the cavity in Kade's ribcage, where it will re-form into its original shape.
In a few months the other ear will be constructed. A week after the first procedure Kade was already having the stitches taken out.
"She took it all in her stride," said Robina. "It has gone through my mind, am I doing the right thing, but Kade so desperately wanted ears.
"She's the one who made the decision and this time next year she'll be a new person."
In between her visits to hospital Kade is going to school and learning to read and write.
When she returns to Trinidad she hopes to become a hairdresser or work in a bank. She's already bought her first pair of earrings.


http://www.3alamozy.com 

'Cutting NHS targets could save epilepsy lives'


Brain waves. Pic:Sovereign, Ism SPL New hopes for a 'Cinderella' service
For years NHS care has been driven by the need to meet an array of targets.
But in this week's Scrubbing Up Jane Hanna, director of the charity Epilepsy Bereaved, argues that removing such strictures could create a more level playing field for the rationing of health resources and save lives.
Like everyone working in the health services today I am well aware of the pressures on services and the ever-present fear of cuts.
For years there have been targets, targets and more targets - and that has meant some areas being neglected.
Patient safety first But could there be a change in the wind? There could be new hope, and perhaps an opportunity for some of the more neglected conditions in healthcare.

Start Quote

Those with epilepsy are being denied the help they need”
End Quote Jane Hanna
Health secretary Andrew Lansley has acknowledged that national targets ignored some conditions. Now he promises a relaxation in the use of targets and that patient safety will be at the heart of the NHS.
A policy shift away from number-crunching to a focus on patient safety must surely be positive news for people with a life-threatening condition.
Take epilepsy. Epilepsy patients do not benefit from specific national targets because "only" half a million people have epilepsy and "only" 1,200 people die from epilepsy each year.
It is "only" the fifth leading cause of avoidable years of life lost in males and "only" the eighth in females.
Epilepsy-related deaths in the UK have remained static since 1993 reflecting a lack of focus by policy makers.
During the same period the total number of deaths from all preventable causes has been falling reflecting successful public health initiatives and research spending aimed at the top 10 causes of preventable death.
Numbers game A NICE (National Institute for health and Clinical Excellence) audit of deaths in 2002 found that 40% of epilepsy-related deaths were potentially avoidable through better medical care and treatment - but in the numbers game we and other "smaller death" totals lose out.
Those with epilepsy are being denied the help they need.
About 69,000 people are estimated to be living with unnecessary seizures not only exposing them to risk, but limiting employment and every day opportunities.
Aiming to achieve seizure-freedom is not rocket-science. Drugs for epilepsy are relatively cheap and can offer seizure-control for 70% of patients.
The crux of the matter is being seen promptly by an epilepsy specialist who can diagnose and recommend the right medication.
Specialist nurses and specialist GPs can be a cost-effective part of the clinical team, especially where there are not enough consultants with expertise in epilepsy.
People with epilepsy want information and sign-posting to the voluntary sector. People who continue to have seizures need prompt re-referral for review of diagnosis and treatment options.
But dealing with epilepsy in the community has not benefited from risk management techniques used in other conditions such as asthma.
More cash to fund research to develop case management for people with epilepsy at risk of emergency care or premature death would be likely to reduce these risks and cut the costs of emergency admissions.
Since 2000 there has been progress, but mainly in the creation of patient expectations and clinical guidelines on the epilepsy.
The government produced an action plan on epilepsy. On the ground, however, access to resources was not dependent on legitimate patient expectation, but whether there were national targets enforced from the centre. People with epilepsy lost out.
This is not to say that there has been no improvement for people with epilepsy. There are pockets in the country where mainly due to the efforts of epilepsy champions and support from the voluntary sector services have moved forward.
If primary care practitioners are to be responsible for commissioning epilepsy services in the future they need to be well informed of the issues.
They need to move beyond the tick-box exercise for epilepsy in the GP contract and look seriously at the potential for achieving more positive outcomes for patients and a more cost-effective health service. People with epilepsy and those close to them must play a part in this process.


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First trial of embryonic stem cells in humans


stem cell There are hopes that stem cell therapy can be used to tackle many diseases
US doctors have begun the first official trial of using human embryonic stem cells in patients after getting the green light from regulators.
The Food and Drug Administration has given a license to Geron to use the controversial cells to treat people with spinal injuries.
The cells have the potential to become many of the different cell types found in the body, including nerve cells.
The trials at a hospital in Atlanta will check if the treatment is safe.

Related stories

Pivotal research
Geron, a biotech company based in "silicon valley" south of San Francisco, has spent $170m on developing a stem cell treatment for spinal cord injury.
The research will use cells coaxed to become nerve cells which are injected into the spinal cord.
In animal trials of the treatment, paralysed rats regained some movement.
But it is not yet known if it will offer any benefit to people with spinal cord injuries.

Start Quote

This is very exciting news, however, it is very important to appreciate that the objective of trials at this stage is to confirm first of all that no harm is done to patients, rather than to look for benefits”
End Quote Professor Sir Ian Wilmut MRC Centre for Regenerative Medicine
Every year around 12,000 people in the US sustain spinal cord injuries. The most common causes are automobile accidents, falls, gunshot wounds and sports injuries.
In the trial, patients who have sustained such an injury within the last 14 days will be given the experimental stem cell treatment.
Geron president Dr Thomas Okarma said: "When we started working with human embryonic stem cells in 1999, many predicted that it would be a number of decades before a cell therapy would be approved for human clinical trials.
"This accomplishment results from extensive research and development and a succession of inventive steps."
But it will take some time to get the results.
And there are many years of rigorous testing ahead before it can be known if the therapy is safe and effective.
Professor Sir Ian Wilmut, director of the Medical Research Council Centre for Regenerative Medicine at the University of Edinburgh, said: "This is very exciting news, however, it is very important to appreciate that the objective of trials at this stage is to confirm first of all that no harm is done to patients, rather than to look for benefits.
"Once that has been confirmed then the focus moves on to development and assessment of the new treatment."
Ben Sykes, executive director of the UK National Stem Cell Network, said: "This is indeed a significant milestone in our journey towards the promise of stem cell-based medicines.
"The global stem cell and regenerative medicine community will be awaiting the results of this safety trial with much anticipation."
Professor Chris Mason, an expert in regenerative medicine at University College London, said UK researchers hope to follow suit and begin trials next year with a stem cell treatment for age-related macular degeneration - a leading cause of blindness.


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Saving the planet one gadget at a time



AlertMe iPhone app
New iPhone apps connect with smart meters to tell you your energy use
Saving energy in a home full of gadgets can seem impossible but the latest home energy technology can help you save the planet - and money.
Gadgets such as smart meters are part of the government's plan to cut carbon emissions. Due in your home sometime after 2013, they show you exactly what electricity you are using, and how much it is costing.
They will also communicate with your supplier, automatically taking readings and making switching suppliers much simpler.
But you do not have to wait until the end of the decade to start cutting your consumption.
The Wattson is a simplified smart meter. A sensor clipped onto your fusebox monitors the electromagnetic field in the wires coming from it, and the accompanying transmitter sends the information, wirelessly, to the shiny Wattson box.
It shows how much power you are using right now, and how much that would cost if - rather unrealistically - you continued to keep everything on all day, every day of the year.
It really does show how switching on the kettle, the oven and any other home appliance sends your wattage sky high.
Smart meters are not magic - they are a tool and you have got to use them intelligently
Dr Sarah Darby
Research Fellow, Oxford University
The accompanying software, Holmes, is more useful. It can show usage over time, and settings can be tweaked for a particular energy tariff.
A similar system is the AlertMe Energy Home Hub, which also uses a plug and transmitter.
It connects to the internet using your router, and gives you access to your home's energy statistics via an online dashboard, a handheld controller or iPhone app.
You can get a summary on your iGoogle page by way of the Powermeter widget and the hub also talks to smart plugs, which can be switched on or off remotely.
Magic meter
Smart meters might keep you informed but actually saving the energy - and money - is still down to you.
"Smart meters are not magic. They are a tool and they are like every other tool - you have got to use it and use it intelligently," said Sarah Darby, from the Environmental Change Institute at Oxford University.
"You can take a smart meter round the house, switching stuff on and off, to see what difference it makes to how much [energy] you are using.
"That way, you can see which [devices] are your big users and which are your small users and before you go to bed at night, you can see what is still switched on."
But if smart metering seems like too much effort, one option might be the PassivEnergy management system, which aims to cut your bills with hardly any human intervention.
The system takes over your central heating and hot water controls, using in-room thermometers, a wireless hub, and a new central heating controller to manage your energy use more efficiently.
PassivEnergy controller
PassivEnergy takes control of your central heating and hot water system
Initially, you use the handheld controller to tell the system about your normal routine - how warm you like it, when you are usually in and out, when you go to bed and when you are planning to go on holiday.
Then it starts to watch what you do and learn your habits.
Director of market intelligence for PassivSystems, Wayne Muncaster, says this is the clever part of the system.
"You can tell it when you are in, when you are out, and the hot water you believe you need.
"But what the system will learn over time is what your habits are and what you actually do - how many showers you take in the morning, whether you have a bath in the middle of the day. The system will begin to understand your lifestyle habits.
"That means the system will only fire, and actually burn energy when you actually need it, not when you tell it you need it or when you think you may need it, but when you actually begin to use the system."
If you come home unusually early, you can override your settings by pressing the "occupancy" buttons to flip the system from "out" to "in".
And if you decide not to come home at all, you can remotely control the system using an iPhone app.
It is not cheap - the complete kit costs nearly £600, with an annual fee of £20 or £30, although the company says customers can expect to save that amount on their bills in two or three years.
Smart fridge
Using technology to save energy in your own home can save you money today, but it could also change the way we power the country tomorrow.
Currently, the national electricity suppliers need to know at any one time how much electricity the country needs, and exactly match it. If they generate too much or too little electricity, the grid will fail.
Electrocity pylons
Smart fridges adapt their electricity use to fluctuations in the national grid
The current solution is to keep several coal-fired power stations running at 50% capacity, so they can be throttled up or down at a moments notice.
It is a very inefficient, wasteful thing to do, but it is the only way to be ready for unexpected surges or lulls in demand.
Now though, clean technology company RLtec thinks it has a solution - the smart fridge.
As commercial manager Joe Warren explained, the smart fridge monitors its internal temperature as well as the status of the national grid - and then compensates accordingly to balance the grid.
"If the grid needs some assistance - if there is too much or too little electricity in the grid - and if the food is at the right temperature, the fridge can turn its motor off or on earlier than it otherwise would have done."
So far the smart fridge is just part of a trial roll-out by energy supplier nPower - balancing the national grid will of course require many, many more people to buy them.
The world may slowly be getting its head around smarter energy and governments are getting on board.
But for at least the next few years - until the devices become mandatory and affordable to all - smarter energy consumption will remain an option only to those who are willing, and able to pay for it.

http://www.3alamozy.com

Cambridge engineers make old phones into smart phones

A range of old mobile phones These old handsets can be made into touchscreen devices with the special acoustic software
Are you ashamed of your primitive, non-touchscreen phone?
Does your lack of flashy technology expose you to mockery at the hands of your co-workers?
Engineers in Cambridge may just have the answer to your woes - and you do not even need to splash out on a new mobile.
Acoustic processing specialists Input Dynamics has developed software which can tell exactly where you tap on a screen simply by listening to the sound it makes.
"We're trying to replace touchscreen capability on a mobile phone with something that's a much cheaper option," says Simon Godshill, technology head for Input Dynamics and a signal processing expert in the engineering department at Cambridge University.

Start Quote

It should be just like using a touchscreen, and some users may not even be aware they're using our alternative technology”
End Quote Simon Godshill technology boss, Input Dynamics
"A purely software option that just measures the sound signals through the normal microphone of the telephone, and characterises where you might have been tapping on the screen to replicate the performance of a normal touchscreen phone."
The developers hope that the software will mean touchscreen devices become a lot cheaper to produce, as well as helping people will less sophisticated handsets can get the full benefit of programs and websites optimised for touchscreens.
Giovanni Bisutti, Input Dynamics boss, says the iPhone proved a desire for more intuitive user interfaces - and that should not be limited to people who are able to afford more expensive handsets.
"Superior navigation ability and efficient interaction with multimedia applications need not be limited to the high end of the market.
"Many people are restricted in their use of internet and apps because they don't have touchscreen phones, but our technology can make touchscreen functionality available to all feature phones.
"We are also very excited about the opportunity to make whole handsets touch sensitive."
The company hopes to encourage mobile manufacturers to include the software in their entry level phones - budget models which would previously been considered too cheap to make as a touchscreen device.
As well as this, Mr Godshill says there are many existing budget mobiles which can have the software installed quickly and cheaply.

Digital Planet

  • Digital Planet is the weekly technology programme broadcast from the BBC World Service
  • It is broadcast on Tuesday at 1232GMT and repeated at 1632GMT, 2032GMT and on Wednesday at 0032GMT
"Touchscreens are still relatively expensive to put onto phones and there are huge numbers of legacy phones out there that do not have touchscreen capability," he explained.
"Because our invention doesn't involve any hardware upgrade to the phone, it would simply be a matter of finding the relevant application on the internet, paying for it and downloading it onto your phone."
He says the technology is so effective at monitoring sounds that it can pin point the "tap" to within one square centimetre, and that it is responsive enough that most users will not even realise the difference between this approach and a conventional touchscreen handset.
"Our screen resolution is not as good as you will get on an iPhone, but you'll certainly be able to navigate complex menu structures on the phone in a similar way to an iPhone.
"The operation to the user should be totally transparent. It should be just like using a touchscreen, and some users may not even be aware they're using our alternative technology."




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Wiki


http://www.3alamozy.com





This article is about the type of website. For other uses, see Wiki (disambiguation) .

"Edit summary" redirects here. For edit summaries as used in Wikipedia, see Help:Edit summary.
"WikiNode" redirects here. For the WikiNode of Wikipedia, see Wikipedia:WikiNode.
A wiki ( /ˈwɪki/ WIK-ee) is a website that allows the easy creation and editing of any number of interlinked web pages via a web browser using a simplified markup language or a WYSIWYG text editor.[1][2][3] Wikis are typically powered by wiki software and are often used to create collaborative wiki websites, to power community websites, for personal note taking, in corporate intranets, and in knowledge management systems.
Wikis may exist to serve a specific purpose, and in such cases, users use their editorial rights to remove material that is considered "off topic." Such is the case of the collaborative encyclopedia Wikipedia.[2] In contrast, open purpose wikis accept content without firm rules as to how the content should be organized.
Ward Cunningham, the developer of the first wiki software, WikiWikiWeb, originally described it as "the simplest online database that could p
History
Main article: History of wikis


Wiki Wiki Shuttle at Honolulu International Airport
WikiWikiWeb was the first wiki.[6] Ward Cunningham started developing WikiWikiWeb in Portland, Oregon in 1994, and installed it on the Internet domain c2.com on March 25, 1995. It was named by Cunningham, who remembered a Honolulu International Airport counter employee telling him to take the "Wiki" shuttle bus that runs between the airport's terminals. According to Cunningham, "I chose wiki-wiki as an alliterative substitute for 'quick' and thereby avoided naming this stuff quick-web."[7][8]
Cunningham was in part inspired by Apple's HyperCard. Apple had designed a system allowing users to create virtual "card stacks" supporting links among the various cards. Cunningham developed Vannevar Bush's ideas by allowing users to "comment on and change one another's text."[2][9]
In the early 2000s, wikis were increasingly adopted in enterprise as collaborative software. Common uses included project communication, intranets, and documentation, initially for technical users. Today some companies use wikis as their only collaborative software and as a replacement for static intranets, and some schools and universities use wikis to enhance group learning. There may be greater use of wikis behind firewalls than on the public Internet.
On March 15, 2007, wiki entered the online Oxford English Dictionary.[10] Some people claim "Wiki" also stands for "What I Know Is"[11] but this is a false backronym.[7]
Characteristics    This section needs additional citations for verification.
Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (December 2009)

Ward Cunningham and co-author Bo Leuf, in their book The Wiki Way: Quick Collaboration on the Web, described the essence of the Wiki concept as follows:
A wiki invites all users to edit any page or to create new pages within the wiki Web site, using only a plain-vanilla Web browser without any extra add-ons.
Wiki promotes meaningful topic associations between different pages by making page link creation almost intuitively easy and showing whether an intended target page exists or not.
A wiki is not a carefully crafted site for casual visitors. Instead, it seeks to involve the visitor in an ongoing process of creation and collaboration that constantly changes the Web site landscape.
A wiki enables communities to write documents collaboratively, using a simple markup language and a web browser. A single page in a wiki website is referred to as a "wiki page", while the entire collection of pages, which are usually well interconnected by hyperlinks, is "the wiki". A wiki is essentially a database for creating, browsing, and searching through information. A wiki allows for non-linear, evolving, complex and networked text, argument and interaction.[12]
A defining characteristic of wiki technology is the ease with which pages can be created and updated. Generally, there is no review before modifications are accepted. Many wikis are open to alteration by the general public without requiring them to register user accounts. Sometimes logging in for a session is recommended, to create a "wiki-signature" cookie for signing edits automatically.[citation needed] Many edits, however, can be made in real-time and appear almost instantly online. This can facilitate abuse of the system. Private wiki servers require user authentication to edit pages, and sometimes even to read them.
Boulous et al. write that it is the "openness of wikis that gives rise to the concept of 'Darwikinism', which is a concept that describes the 'socially Darwinian process' that wiki pages are subject to. Basically, because of the openness and rapidity that wiki pages can be edited, the pages undergo an evolutionary selection process not unlike that which nature subjects to living organisms. 'Unfit' sentences and sections are ruthlessly culled, edited and replaced if they are not considered 'fit', which hopefully results in the evolution of a higher quality and more relevant page. Whilst such openness may invite 'vandalism' and the posting of untrue information, this same openness also makes it possible to rapidly correct or restore a 'quality' wiki page."[13]
Editing wiki pages
There are many different ways in which wikis have users edit the content. Ordinarily, the structure and formatting of wiki pages are specified with a simplified markup language, sometimes known as "wikitext". For example, starting a line of text with an asterisk ("*") often sets up a bulleted list. The style and syntax of wikitexts can vary greatly among wiki implementations, some of which also allow HTML tags. Designers of wikis often take this approach because HTML, with its many cryptic tags, is not very legible, making it hard to edit. Wikis therefore favour plain-text editing, with fewer and simpler conventions than HTML, for indicating style and structure. Although limiting access to HTML and to the cascading style sheets (CSS) of wikis limits user ability to alter the structure and formatting of wiki content, there are some benefits. Limited access to CSS promotes consistency in the look and feel, and having JavaScript disabled prevents a user from implementing code, which may limit access for other users.MediaWiki syntax    Equivalent HTML    Rendered output
"Take some more [[tea]]," the March Hare said to Alice, very earnestly.

"I've had nothing yet," Alice replied in an offended tone: "so I can't take more."

"You mean you can't take ''less''," said the Hatter: "it's very easy to take ''more'' than nothing."    <p>"Take some more <a href="/wiki/Tea" title="Tea">tea</a>," the March Hare said to Alice, very earnestly.</p>
<p>"I've had nothing yet," Alice replied in an offended tone: "so I can't take more."</p>

<p>"You mean you can't take <i>less</i>," said the Hatter: "it's very easy to take <i>more</i> than nothing."</p>    "Take some more tea," the March Hare said to Alice, very earnestly. "I've had nothing yet," Alice replied in an offended tone: "so I can't take more."
"You mean you can't take less," said the Hatter: "it's very easy to take more than nothing."

(Quotation above from Alice's Adventures in Wonderland by Lewis Carroll)
Increasingly, wikis are making "WYSIWYG" ("What You See Is What You Get") editing available to users, usually by means of JavaScript or an ActiveX control that translates graphically entered formatting instructions, such as "bold" and "italics", into the corresponding HTML tags or wikitext. In those implementations, the markup of a newly edited, marked-up version of the page is generated and submitted to the server transparently, shielding the user from this technical detail. However, WYSIWYG controls do not always provide all of the features available in wikitext, and some users prefer not to use a WYSIWYG editor, and as a result many of these sites offer some means to edit the wikitext directly.
Most wikis keep a record of changes made to wiki pages; often every version of the page is stored. This means that authors can revert to an older version of the page, should it be necessary because a mistake has been made or the page has been vandalized. Many implementations (for example MediaWiki) allow users to supply an "edit summary" when they edit a page. This is a short piece of text (usually one line) summarizing the changes. It is not inserted into the article, but is stored along with that revision of the page, allowing users to explain what has been done and why; this is similar to a log message when committing changes to a revision-control system.
Navigation
Within the text of most pages there are usually a large number of hypertext links to other pages. This form of non-linear navigation is more "native" to wiki than structured/formalized navigation schemes. That said, users can also create any number of index or table-of-contents pages, with hierarchical categorization or whatever form of organization they like. These may be challenging to maintain by hand, as multiple authors create and delete pages in an ad hoc manner. Wikis generally provide one or more ways to categorize or tag pages to support the maintenance of such index pages.
Most wikis have a backlink feature, which displays all pages that link to a given page.
It is typical in a wiki to create links to pages that do not yet exist, as a way to invite others to share what they know about a subject new to the wiki.
Linking and creating pages
Links are created using a specific syntax, the so-called "link pattern" (also see CURIE). Originally, most wikis used CamelCase to name pages and create links. These are produced by capitalizing words in a phrase and removing the spaces between them (the word "CamelCase" is itself an example). While CamelCase makes linking very easy, it also leads to links which are written in a form that deviates from the standard spelling. CamelCase-based wikis are instantly recognizable because they have many links with names such as "TableOfContents" and "BeginnerQuestions." It is possible for a wiki to render the visible anchor for such links "pretty" by reinserting spaces, and possibly also reverting to lower case. However, this reprocessing of the link to improve the readability of the anchor is limited by the loss of capitalization information caused by CamelCase reversal. For example, "RichardWagner" should be rendered as "Richard Wagner," whereas "PopularMusic" should be rendered as "popular music". There is no easy way to determine which capital letters should remain capitalized. As a result, many wikis now have "free linking" using brackets, and some disable CamelCase by default.
Trust and security
Controlling changes


History comparison reports highlight the changes between two revisions of a page.
Wikis are generally designed with the philosophy of making it easy to correct mistakes, rather than making it difficult to make them. Thus, while wikis are very open, they provide a means to verify the validity of recent additions to the body of pages. The most prominent, on almost every wiki, is the "Recent Changes" page—a specific list numbering recent edits, or a list of edits made within a given time frame.[14] Some wikis can filter the list to remove minor edits and edits made by automatic importing scripts ("bots").[15]
From the change log, other functions are accessible in most wikis: the revision history shows previous page versions and the diff feature highlights the changes between two revisions. Using the revision history, an editor can view and restore a previous version of the article. The diff feature can be used to decide whether or not this is necessary. A regular wiki user can view the diff of an edit listed on the "Recent Changes" page and, if it is an unacceptable edit, consult the history, restoring a previous revision; this process is more or less streamlined, depending on the wiki software used.[16]
In case unacceptable edits are missed on the "recent changes" page, some wiki engines provide additional content control. It can be monitored to ensure that a page, or a set of pages, keeps its quality. A person willing to maintain pages will be warned of modifications to the pages, allowing him or her to verify the validity of new editions quickly.[17] A watchlist is a common implementation of this.
Some wikis also implement "patrolled revisions," in which editors with the requisite credentials can mark some edits as not vandalism. A "flagged revisions" system can prevent edits from going live until they have been reviewed.[18]
Searching
Most wikis offer at least a title search, and sometimes a full-text search. The scalability of the search depends on whether the wiki engine uses a database. Some wikis, such as PMWiki, use flat files.[19] MediaWiki's first versions used flat files, but it was rewritten by Lee Daniel Crocker in the early 2000s to be a database application. Indexed database access is necessary for high speed searches on large wikis. Alternatively, external search engines such as Google can sometimes be used on wikis with limited searching functions in order to obtain more precise results. However, a search engine's indexes can be very out of date (days, weeks or months) for many websites.
Software architecture
Wiki software is a type of collaborative software that runs a wiki system, allowing web pages to be created and edited using a common web browser. It is usually implemented as an application server that runs on one or more web servers. The content is stored in a file system, and changes to the content are stored in a relational database management system. Alternatively, personal wikis run as a standalone application on a single computer. For example: WikidPad.
Trustworthiness
Critics of publicly editable wiki systems argue that these systems could be easily tampered with, while proponents argue that the community of users can catch malicious content and correct it.[2] Lars Aronsson, a data systems specialist, summarizes the controversy as follows:“    Most people, when they first learn about the wiki concept, assume that a Web site that can be edited by anybody would soon be rendered useless by destructive input. It sounds like offering free spray cans next to a grey concrete wall. The only likely outcome would be ugly graffiti and simple tagging, and many artistic efforts would not be long lived. Still, it seems to work very well.[6]    ”

High editorial standards in medicine have led to the idea of expert-moderated wikis.[20] Some wikis allow one to link to specific versions of articles, which has been useful to the scientific community, in that expert peer reviewers could analyse articles, improve them and provide links to the trusted version of that article.[21]
Noveck points out that "participants are accredited by members of the wiki community, who have a vested interest in preserving the quality of the work product, on the basis of their ongoing participation." On controversial topics that have been subject to disruptive editing, a wiki may restrict editing to registered users.[22]
Security
The open philosophy of most wikis, allowing anyone to edit content, does not ensure that every editor is well-meaning. Vandalism can be a major problem. In larger wiki sites, such as those run by the Wikimedia Foundation, vandalism can go unnoticed for a period of time. Wikis by their very nature are susceptible to intentional disruption, known as "trolling". Wikis tend to take a soft security[23] approach to the problem of vandalism; making damage easy to undo rather than attempting to prevent damage. Larger wikis often employ sophisticated methods, such as bots that automatically identify and revert vandalism and JavaScript enhancements that show characters that have been added in each edit. In this way vandalism can be limited to just "minor vandalism" or "sneaky vandalism", where the characters added/eliminated are so few that bots do not identify them and users do not pay much attention to them.
The amount of vandalism a wiki receives depends on how open the wiki is. For instance, some wikis allow unregistered users, identified by their IP addresses, to edit content, whilst others limit this function to just registered users. Most wikis allow anonymous editing without an account,[24] but give registered users additional editing functions; on most wikis, becoming a registered user is a short and simple process. Some wikis require an additional waiting period before gaining access to certain tools. For example, on the English Wikipedia, registered users can only rename pages if their account is at least four days old. Other wikis such as the Portuguese Wikipedia use an editing requirement instead of a time requirement, granting extra tools after the user has made a certain number of edits to prove their trustworthiness and usefulness as an editor. Basically, "closed up" wikis are more secure and reliable but grow slowly, whilst more open wikis grow at a steady rate but result in being an easy target for vandalism. A clear example of this would be that of Wikipedia and Citizendium. The first is extremely open, allowing anyone with a computer and internet access to edit it, making it grow rapidly, whilst the latter requires the users' real name and a biography of themselves, affecting the growth of the wiki but creating an almost "vandalism-free" ambiance.
Malware can also be problem, as users can add links to sites hosting malicious code. For example, a German Wikipedia article about the Blaster Worm was edited to include a hyperlink to a website that would infect the user's computer.[12] A countermeasure is the use of software that prevents users from saving an edit that contains a link to a site listed on a blacklist of malware sites.[25]
Wiki software must also block JavaScript or other kinds of scripting that the attacker may attempt to insert directly into the page during editing sessions.
Edit wars can also occur as users repetitively revert a page to the version they favor. Some wiki software allows an administrator to stop such edit wars by locking a page from further editing until a decision has been made on what version of the page would be most appropriate.[12]
Some wikis are in a better position than others to control behavior due to governance structures existing outside the wiki. For instance, a college teacher can create incentives for students to behave themselves on a class wiki he administers, by limiting editing to logged-in users and pointing out that all contributions can be traced back to the contributors. Bad behavior can then be dealt with in accordance with university policies.[19]
Communities
User communities
Many wiki communities are private, particularly within enterprises. They are often used as internal documentation for in-house systems and applications. Some companies use wikis to allow customers to help produce software documentation.[26] A study of corporate wiki users found that they could be divided into "synthesizers" and "adders" of content. Synthesizers' frequency of contribution was affected more by their impact on other wiki users, while adders' contribution frequency was affected more by being able to accomplish their immediate work.[27] In 2005, the Gartner Group, noting the increasing popularity of wikis, estimated that they would become mainstream collaboration tools in at least 50% of companies by 2009.[28]
Wikis have also been used in the academic community for sharing and dissemination of information across institutional and international boundaries.[29] In those settings, they have been found useful for collaboration on grant writing, strategic planning, departmental documentation, and committee work.[30] In the mid-2000s, the increasing trend amongst industries toward collaboration was placing a heavier impetus upon educators to make students proficient in collaborative work, inspiring even greater interest in wikis being used in the classroom.[12]
Wikis have found some use within the legal profession, and within government. Examples include the Central Intelligence Agency's Intellipedia, designed to share and collect intelligence, dKospedia, which was used by the American Civil Liberties Union to assist with review of documents pertaining to internment of detainees in Guantanamo Bay; and the wiki of the U.S. Court of Appeals for the Seventh Circuit, used to post court rules and allow practitioners to comment and ask questions. The United States Patent Office uses a wiki to allow the public to collaborate on finding prior art relevant to examination of pending patent applications. Queens, New York has used a wiki to allow citizens to collaborate on the design and planning of a local park. Cornell Law School founded a wiki-based legal dictionary called Wex, whose growth has been hampered by restrictions on who can edit.[22]
There also exist WikiNodes which are pages on wikis that describe related wikis. They are usually organized as neighbors and delegates. A neighbor wiki is simply a wiki that may discuss similar content or may otherwise be of interest. A delegate wiki is a wiki that agrees to have certain content delegated to that wiki.
One way of finding a wiki on a specific subject is to follow the wiki-node network from wiki to wiki; another is to take a Wiki "bus tour", for example: Wikipedia's Tour Bus Stop. Domain names containing "wiki" are growing in popularity to support specific niches.
For those interested in creating their own wiki, there are publicly available "wiki farms", some of which can also make private, password-protected wikis. PBwiki, Socialtext, Wetpaint, and Wikia are popular examples of such services. For more information, see List of wiki farms. Note that free wiki farms generally contain advertising on every page.
The four basic types of users who participate in wikis are reader, author, wiki administrator and web administrator. The web administrator is responsible for installation and maintenance of the wiki engine and the container web server. The wiki administrator maintains wiki content and is provided additional functions pertaining to pages (e.g. page protection and deletion), and can adjust users' access rights by, for instance, blocking them from editing.[31]
The English-language Wikipedia has the largest user base among wikis on the World Wide Web[32] and ranks in the top 10 among all Web sites in terms of traffic.[33] Other large wikis include the WikiWikiWeb, Memory Alpha, Wikitravel, World66 and Susning.nu, a Swedish-language knowledge base.
Medical and health-related wiki examples include the Flu Wiki, which is intended to help local public health communities prepare for, and perhaps cope, with a possible avian influenza pandemic, and Ganfyd, an online collaborative medical reference that is edited by medical professionals and invited non-medical experts.[13]
A study of several hundred wikis showed that a relatively high number of administrators for a given content size is likely to reduce growth; that access controls restricting editing to registered users tends to reduce growth; that a lack of such access controls tends to fuel new user registration; and that higher administration ratios (i.e. admins/user) have no significant effect on content or population growth.[34]
Research communities
Wikis are an active topic of research. Two well-known wiki conferences are
The International Symposium on Wikis (WikiSym), a conference dedicated to wiki research and practice in general.
Wikimania, a conference dedicated to research and practice of Wikimedia Foundation projects like Wikipedia.
Rules
Wikis typically have a set of rules governing user behavior. Wikipedia, for instance, has an intricate set of policies and guidelines summed up in its five pillars: Wikipedia is an encyclopedia; Wikipedia has a neutral point of view; Wikipedia is free content; Wikipedians should interact in a respectful and civil manner; and Wikipedia does not have firm rules. Many wikis have adopted a set of commandments. For instance, Conservapedia commands, among other things, that its editors use "B.C." rather than "B.C.E." when referring to years prior to the common era and refrain from "unproductive activity."[35] One teacher instituted a commandment for the class wiki, "Wiki unto others as you would have them wiki unto you."[19]
Legal environment
Joint authorship of articles, in which different users participate in correcting, editing, and compiling the finished product, can also cause editors to become tenants in common of the copyright, making it impossible to republish without the permission of all co-owners, some of whose identities may be unknown due to pseudonymous or anonymous editing.[12] However, where persons contribute to a collective work such as an encyclopedia, there is no joint ownership if the contributions are separate and distinguishable.[36] Despite most wikis' tracking of individual contributions, the action of contributing to a wiki page is still arguably one of jointly correcting, editing, or compiling which would give rise to joint ownership.
Some copyright issues can be alleviated through the use of an open content license. Version 2 of the GNU Free Documentation License includes a specific provision for wiki relicensing; Creative Commons licenses are also popular. When no license is specified, an implied license to read and add content to a wiki may be deemed to exist on the grounds of business necessity and the inherent nature of a wiki, although the legal basis for such an implied license may not exist in all circumstances.
Wikis and their users can be held liable for certain activities that occur on the wiki. If a wiki owner displays indifference and forgoes controls (such as banning copyright infringers) that he could have exercised to stop copyright infringement, he may be deemed to have authorized infringement, especially if the wiki is primarily used to infringe copyrights or obtains direct financial benefit, such as advertising revenue, from infringing activities.[12] In the United States, wikis may benefit from Section 230 of the Communications Decency Act, which protects sites that engage in "Good Samaritan" policing of harmful material, with no requirement on the quality or quantity of such self-policing.[37] However, it has also been argued that a wiki's enforcement of certain rules, such as anti-bias, verifiability, reliable sourcing, and no-original-research policies, could pose legal risks.[38] When defamation occurs on a wiki, theoretically all users of the wiki can be held liable, because any of them had the ability to remove or amend the defamatory material from the "publication." It remains to be seen whether wikis will be regarded as more akin to an internet service provider, which is generally not held liable due to its lack of control over publications' contents, than a publisher.[12]
It has been recommended that trademark owners monitor what information is presented about their trademarks on wikis, since courts may use such content as evidence pertaining to public perceptions. Jarvis notes, "Once misinformation is identified, the trade mark owner can simply edit the entry."[39]
See also    Wikiversity has learning materials about Wiki

Comparison of wiki software
Content management system
List of wikis
Mass collaboration
Universal Edit Button
Wikipedia#Learning resources – courses, instruction videos, slides, text books, quizzes, etc., related to Wikipedia and other Wikis.
Wikis and education
References
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^ (Ebersbach 2008, p. 54)
^ (Ebersbach 2008, p. 178)
^ (Ebersbach 2008, p. 109)
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^ Redwood Music Ltd v. B Feldman & Co Ltd, RPC 385 .
^ Kathleen M. Walsh & Sarah Oh (23 February 2010), Self-Regulation: How Wikipedia Leverages User-Generated Quality Control Under Section 230, http://works.bepress.com/cgi/viewcontent.cgi?article=1000&context=sarah_oh
^ Myers, Ken (2008), Wikimmunity: Fitting the Communications Decency Act to Wikipedia, The Berkman Center for Internet and Society
^ Jarvis, Joshua (May 2008), Police your marks in a wiki world, Managing Intellectual Property
Ebersbach, Anja (2008), Wiki: Web Collaboration, Springer Science+Business Media, ISBN 3540351507



ossibly work."[4] "Wiki" (pronounced [ˈwiti] or [ˈviti]) is a Hawaiian word for "fast".[5]


http://www.3alamozy.com