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Objectives...... 1 Motivation ...... 2 Relevance ...... 3 Structure of the dissertation ...... 3

Part 2 Chapter 1 / FROM PARTICIPATION TO INTERACTION...... 9 Part 2 Chapter 2 / THE NEW INTERACTIVITIES ...... 15 Part 2 Chapter 2 Subchapter 1 / ASPECTS OF USABILITY & ERGONOMICS ...... 18 Navigation & manipulation schema ...... 20 System and application information ...... 22 User interface presentation ...... 23 Part 2 Chapter 2 Subchapter 2 / ASPECTS OF INTERACTIVITY ...... 26 Information and collaboration ...... 28 Organization ...... 29 Lifestyle ...... 30 Utilities ...... 31 Social Networking ...... 32 Entertainment ...... 33 Part 2 Chapter 2 Subchapter 3 / ASPECTS OF OPERATION ...... 35 The Hardware ...... 36 The operating system ...... 37 The Network Protocols ...... 41 GPS...... 43 The sensors ...... 45 Part 2 Chapter 2 Subchapter 4 / CONTINUOUS SERVICES & CONNECTED DEVICES...... 47 Cloud computing ...... 48 Semantic web ...... 51 Crowdsourcing...... 55 Part 2 Chapter 3 / WHAT THE FUTURE EMBRACES ...... 59 P2P Connectivity ...... 60

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Predictability ...... 60 Mixed reality ...... 61 Crowdsourcing ...... 62 Sensors and other sensorial aptitudes ...... 62 3D ...... 64

Part 3 Chapter 1 / USED METHODS & RESULTS ANALYSIS ...... 67 Procedures and Participants ...... 67 Measures ...... 68 Part 3 Chapter 2 / DISCUSSION ...... 82 Part 3 Chapter 3 / PROJECT DESCRIPTION ...... 84 Part 3 Chapter 4 / OBJECTIVES ...... 86 Location awareness exploitation ...... 86 Targeted location exploitation ...... 86 Global data dissemination ...... 87 Targeted data dissemination ...... 87 Active Collaboration ...... 88 Passive Collaboration ...... 88 Part 3 Chapter 5 / COMPARATIVE MARKET ANALYSIS ...... 89 Categorized information ...... 90 Multi-topic information ...... 91 Geo-awareness & targeted location...... 92 Globalized & targeted information ...... 93 Active & passive real-time collaboration ...... 94 adapted app ...... 95 Geo-location semantic awareness ...... 96 User friendliness & simplicity ...... 97 Part 3 Chapter 6 / DESIGN & IMPLEMENTATION ...... 99 ...... 99 Programming Environment ...... 100 The architecture ...... 101 Part 3 Chapter 7 / FUTURE WORK ...... 104 User interface ...... 104 Multiculturalism ...... 104

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Multidimensional database system ...... 105 Gamification ...... 105 Subsidiary applications ...... 106 Covering other platforms ...... 106

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1 More and more people start their day with a query, via phone, to email account or to Facebook. And do it before they even wash their teeth or take coffee.

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2 Playability heuristics for mobile games Hannu Korhonen, Elina M. I. Koivisto, Nokia Research Center, Tampere, Finland

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3 Usability engineering, Jakob Nielson, published by Morgan Kaufman, San Francisco, 1993

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4 umm.edu/iphone 5 healthmap.org/outbreaksnearme; HealthMap.org

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6 vitotechnology.com/star-walk.html 7 webex.com

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8 squareup.com 9 apple.com/ipod/nike/run.html

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10 www.layar.com

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11 telular.com/telguard/telguard.asp

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12 shazam.com

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13 youtube.com/watch?v=F0-UtNg3ots

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14 citysense.net 15 pathintelligence.com 16 world.waze.com

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Gender Age

25% 14% <25 Female 23% 25-35 Male 63% >35 75%

Level of education completed

1% <= 12th grade 30% 33% Bachelor degree Master degree PhD degree 35%

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What types of information do you typically seek out on your smartphone? Department Stores Entertainment Food & Beverage 3 33 74 General stores 79 Health service 28 Media Services in general 45 44 Sports 25 Transport & lodging 80 28 Other

When looking for information of assorted nature would you rather seek it primarily by theme or by date of insertion?

15% By theme By date 85%

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In addition to making phone calls, how do you mainly use your smartphone?

Emailing 93 Gaming 40 Getting things done 53 Listening to music or watching videos 53 Photographing 49 Searching for specific geo-… 22 Social networking 51 104 Way finding 23 Web browsing 70 Other 0

Excluding phone calls, do you often use your smartphone while simultaneously doing the following activities?

Exercising 16 In cafés 59 On holiday 70 On the bus, train, metro 104 Shopping 19 Waiting 114 Walking 29 Working 30 Watching TV 25 Other 6

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Do you rather seek out location-based information or targeted information? 6% Location-based 21% Targeted Both 49% 24% None

Do you find important to know in advance what you can expect from a place you visit for the first time? 8% 1% Very important Important 36% Not so important 55% Not at all

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Would you like to be able to post your specific question and expect an answer from a friend or a well-informed stranger?

10% 14% Friend Friend & stranger No, I wouldn´t 76%

Would you like to be able to post a relevant or interesting tip just to your friends or to everyone in general?

10% 20% Only to friends

To everyone in general

No, I wouldn't 70%

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Do you rather seek out information coming from friends or well-informed strangers?

Coming from friends 27% Coming from strangers 8% 63% Both 2% None

Do you usually find the answers to your queries?

58% Yes 2% No 40% Sometimes

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How do you consume information on a smartphone?

Individual sites 99 93 Twitter & Facebook Apps on smartphone 63 SMS/MMS/email Others 28 3

Would you rather access individual information by using your smartphone Web browser or by using an information-specific app?

39% Web browser 37% Specific app 23% No preference

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Do you travel on a regular basis?

27% 27% 26% At work For recreation At work & for recreation On annual vacations 11% 8% Seldom Never 1% 0% Other

When you visit a place for the first time what kind of travel information do you mostly look for?

88 92 Road maps Tourist guides

46 46 Cyber cafés I ask around Smartphone 5 0 Other

Do you find it pertinent to obtain all types of relevant information regarding a location you are at?

58% Yes, a lot 40% Sometimes Not really

2%

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Putting aside the price issue, if you were free to choose a new smartphone today, which one would you choose?

5% 1% 3%

Apple iPhone Google Android phone 48% Rim Blackberry phone 43% Windows phone 7 Other

What are the most important factors that inform your choice? 12 Ability to customize phone

58 57 Friendly & simple user interface Touch screen 46 90 GPS enabled Multitasking 73 49 Number and quality of apps Quality of display 80 63 Size of device 45 Web browsing capabilities Other

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Allen, Paul G. "Steve Ballmer: Cloud Computing." Microsoft News Center. 03 04, 2010. http://www.microsoft.com/presspass/exec/steve/2010/03-04Cloud.mspx (accessed 2011).

Ankolekar, et al. "Integrating Semantic Web Services for Mobile Access." ESWC06. Junho 2006. http://kmi.open.ac.uk/events/eswc06/poster-papers/FP45-Ankolekar.pdf (accessed 2010).

Apple Inc. "IOS Human Interface Guidelines - User Experience." IOS Reference Library. 11 15, 2010. http://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/Mobi leHIG.pdf (accessed 2010).

Bakken, David G. "Is crowdsourcing the future of innovation?" The Customer Knowledge Advantage. 03 03, 2010. http://davidgbakken.wordpress.com/2010/03/03/is-crowdsourcing-the-future-of-innovation/ (accessed 2011).

Ballmer, Steve. "Steve Ballmer: Government Leaders Forum." Microsoft News Center. 11 04, 2010. http://www.microsoft.com/presspass/exec/steve/2010/11-04glf.mspx (accessed 2011).

Becker, Christian. "A Location-Aware Mobile Client for the Semantic Web." beckr. 06 2008. http://beckr.org/wp-content/uploads/Diploma%20Thesis%20Christian%20Becker.pdf (accessed 2011).

Bernal, Joey. Web 2.0 and Social Networking for the Enterprise. United States of America: IBM PRESS, 2010.

Bernett, Claudia. "fastcodesign." Method: 10 Mobile Interfaces That Rewire Daily Life. 10 01, 2010. http://www.fastcodesign.com/1662404/creating-meaningful-mobile-experiences-that-connect-with- consumers (accessed 2011).

Bomber, Kristi. "Work/Life Balance and : Can a Smartphone make a difference?" Linnaeus University. 2010. http://lnu.diva-portal.org/smash/record.jsf?pid=diva2:330748&rvn=1 (accessed 2011).

BrightSightGroup. "Jeff Howe - Crowdsourcing." YouTube. 07 28, 2008. http://www.youtube.com/watch?v=F0- UtNg3ots (accessed 2010).

Butler, Margaret. "Android: Changing the Mobile Landscape." IEEEXplore. 2011. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5676144&tag=1 (accessed 2011).

Casteleyn, et al. Engineering Web Applications. Dordrecht Heidelberg London New York: Springer, 2009.

Chavan, G.. "Design and analysis of a mobile file sharing system for opportunistic networks". M.S. diss., The University of Texas at Arlington ,2009. In Dissertations & Theses: Full Text [database on-line]; available from http://www.proquest.com (publication number AAT 1467857; accessed 2011).

Chivers, Trimble Morag. "Differential GPS Explained." esri. 2009. http://www.esri.com/news/arcuser/0103/differential1of2.html (accessed 2011).

109

Constantinou, Andreas, Lewis Matt, and ARCchart Ltd. "Mobile Operating Systems: The New Generation." ARCCHART. 08 2006. http://www.arcchart.com/reports/mos.asp.

Crumlish, Christian, and Erin Malone. Designing Social Interfaces. Sebastopol: O’Reilly Media, Inc.,, 2009.

Cybis, Walter, Adriana Holtz Betiol, and Richard Faust. "Ergonomia e Usabilidade - Conhecimentos, Métodos e Aplicações." livraria cultura. n.d. http://www.livrariacultura.com.br/imagem/capitulo/2211048.pdf (accessed 2011).

Dillon, Tharam, Chen Wu, and Elizabeth Chang. "Cloud Computing: Issues and Challenges." IEEEXplore digital Library. 2010. http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fstamp%2Fsta mp.jsp%3Farnumber%3D5474674&authDecision=-203 (accessed 2010).

Dowell, Andrew. "The Rise of Apps, iPad and Android." THE WALL STREET JOURNAL. 12 27, 2010. http://online.wsj.com/article/SB10001424052748704774604576035611315663944.html (accessed 2011).

Dybwad, Barb. "TED: Future of Mobile With Henry Tirri, Head of Nokia Research [INTERVIEW]." Mashable. 02 12, 2010. http://mashable.com/2010/02/12/future-mobile-henry-tirri-interview/ (accessed 2011).

Eagle, Nathan. "txteagle: Mobile Crowdsourcing." Reality Mining. 2009. http://reality.media.mit.edu/pdfs/hcii_txteagle.pdf.

Eggebrecht, Michael. "Smartphone Evolution: From Simon to Pre in 12 Steps." CioZone - Network for IT Leadership. 07 17, 2009. http://www.ciozone.com/index.php/Mobile-and-Wireless/Smartphone- Evolution-From-Simon-to-Pre-in-12-Steps.html.

Emilsson, André. "Indoor Navigation Using an iPhone." Linköping University. 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57890.

Garcia Kunzel, A.. "An Android approach to the web services resource framework". M.Sc. diss., Florida Atlantic University ,2010. In Dissertations & Theses: Full Text [database on-line]; available from http://www.proquest.com (publication number AAT 1485682; accessed 2011).

Gartner. "Gartner Newsroom." Gartner Says Worldwide Mobile Device Sales Grew 13.8 Percent in Second Quarter of 2010, But Competition Drove Prices Down. 08 12, 2010. http://www.gartner.com/it/page.jsp?id=1421013 (accessed 2011).

Georg Wittenburg, M. Sc. "Collaborative Data Processing on Mobile Handsets." 06 29, 2010. http://cst.mi.fu- berlin.de/papers/kettner10collaborative.pdf (accessed 2011).

Govil, Jivesh, and Jivika Govil. "4G Mobile Communication Systems: Turns, Trends and Transition." IEEEXplore. 2007. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4420230&tag=1 (accessed 2011).

Greenfield, Adam. "Everyware: the dawning age of ubiquitous computing." Googlelivros. n.d. http://books.google.pt/books?id=noMNgMcZvL0C&pg=PA57&lpg=PA57&dq=adam+greenfields+every ware+download&source=bl&ots=shNLc2va2g&sig=wJVI650t9wJs7zfW7lHQTlUOHSA&hl=pt- PT&ei=r4EvTbL1EcSBOtiQwcQH&sa=X&oi=book_result&ct=result&resnum=9&sqi=2&ved=0CGsQ6AE wCA#v=o (accessed 2011).

110 guardian.co.uk. "A brave new world: the future of smartphone apps." guardian.co.uk. 08 28, 2010. http://www.guardian.co.uk/lg-talking-technology/the-future-of-apps (accessed 2011).

Hagel III, John, and John Seely Brow. "The Power of the Social Cloud." Get Teamcenter. 10 15, 2010. http://blogs.hbr.org/bigshift/2010/10/the-power-of-the-social-cloud.html (accessed 2011).

Hagel III, John, and John Seely Brown. "Cloud Computing's Stormy Future." Get Teamcenter. 09 14, 2010. http://blogs.hbr.org/bigshift/2010/09/cloud-computings-stormy-future.html (accessed 2011).

Hagel, et al. "Cloud computing Storms on The Horizon." Deloitte. 2010. http://www.deloitte.com/assets/Dcom- UnitedStates/Local%20Assets/Documents/TMT_us_tmt/us_tmt_ce_CloudsStormsonHorizon_042010. pdf (accessed 2011).

Hamblen, Matt. "Symbian, Android will be top smartphone OSes in '12, Gartner reiterates." COMPUTERWORLD. 10 13, 2009. http://www.computerworld.com/s/article/9139301/Symbian_Android_will_be_top_smartphone_OSe s_in_12_Gartner_reiterates (accessed 2010).

INTERNET, MOBILE. "Mobile Internet – Wireless Communications On The Move." MOBILE INTERNET. n.d. http://www.mobilenetx.com/ (accessed 2011).

Jenson, Scott. "THE COMING ZOMBIE APOCALYPSE: SMALL, CHEAP DEVICES WILL DISRUPT OUR OLD-SCHOOL UX ASSUMPTIONS." UX MAGAZINE. 12 08, 2010. http://uxmag.com/technology/the-coming-zombie- apocalypse (accessed 2011).

Jeon, Joo-Seong, and Gi-Jeong Lee. "Development of a Semantic Web Based Mobile Local Search System." BANFF 2007. 05 2007. http://www2007.org/posters/poster959.pdf.

Karlson, A.. "Interface and interaction design for one-handed mobile computing". Ph.D. diss., University of Maryland, College Park ,2007. In Dissertations & Theses: Full Text [database on-line]; available from http://www.proquest.com (publication number AAT 3297319; accessed 2011).

Kleemann, Thomas, and Alex Sinner. "User Profiles and Matchmaking on Mobile Phones." MetaPress. 2006. http://www.metapress.com/content/e3g2w6g105lp6507/fulltext.pdf (accessed 2010).

Klein, Andreas, Christian Mannweiler, and Joerg Schneid. "Access Schemes for Mobile Cloud Computing." IEEEXplore - Digital Library. 2010. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5489732 (accessed 2011).

Kleusberg, Alfred, and Richar B. Langley. "THE LIMITATIONS OF GPS." GPS WORLD. 1990. http://gauss.gge.unb.ca/gpsworld/EarlyInnovationColumns/Innov.1990.03-04.pdf.

Kovachev, et al. "Mobile Community Cloud Computing: Emerges and Evolves." IEEEXplore - Digital Library. 2010. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5489731 (accessed 2010).

Kumar, Karthik, and Yung-Hsiang Lu. "Cloud Computing for Mobile Users: Can Offloading Computation Save Energy?" IEEEXplore - Digital Library. 2010. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5432121&tag=1.

Laugesen, John, and Yufei Yuan. "What factors contributed to the success of Apple’s iPhone?" IEEEXplore. 2010. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5494782.

111

Mangs, J.. "Enabling access for mobile devices to the Web services resource framework". M.S. diss., Florida Atlantic University ,2008. In Dissertations & Theses: Full Text [database on-line]; available from http://www.proquest.com (publication number AAT 1460597; accessed 2011).

Maniatis, Andreas S. "The Case for Mobile OLAP." School of Computer and Electrical Engineering. 2004. http://www.dbnet.ece.ntua.gr/pubs/uploads/TR-2004-11.pdf (accessed 2011).

Melanson, Donald. "UN: worldwide internet users hit two billion, cellphone subscriptions top five billion." engadget. 01 28, 2011. http://www.engadget.com/2011/01/28/un-worldwide-internet-users-hit-two- billion-cellphone-subscript/ (accessed 2011).

Morimoto, Carlos E. "Entendendo a arquitetura de hardware dos smartphones." Hardware.com.br. 12 02, 2010. http://www.hardware.com.br/dicas/arquitetura-hardware-smartphones.html (accessed 2011). nielsenwire. "In U.S., SMS Text Messaging Tops Calling." nielsenwire. 09 22, 2008. http://blog.nielsen.com/nielsenwire/online_mobile/in-us-text-messaging-tops-mobile-phone-calling/ (accessed 2010).

Nudelman, Greg. "Design Patterns for Mobile Faceted Search: Part I." UXmatters. 04 05, 2010. http://www.uxmatters.com/mt/archives/2010/04/design-patterns-for-mobile-faceted-search-part- i.php (accessed 2011).

—. "Design Patterns for Mobile Faceted Search: Part II." UXmatters. 05 03, 2010. http://www.uxmatters.com/mt/archives/2010/05/design-patterns-for-mobile-faceted-search-part- ii.php.

—. "Designing Mobile Search: Turning Limitations into Opportunities." UXmatters. 03 08, 2010. http://www.uxmatters.com/mt/archives/2010/03/designing-mobile-search-turning-limitations-into- opportunities.php (accessed 2011).

Oppenheim, Richard. "A WEB BY ANY OTHER NAME: WHY WE NEED TO KNOW ABOUT THE SEMANTIC WEB." DCLnews Blog. 07 29, 2010. http://www.dclab.com/blog/2010/07/a-web-by-any-other-name-why-we- need-to-know-about-the-semantic-web/ (accessed 2010). optimus. "E, de repente, os telemóveis ficaram inteligentes." optimus negócios, 10 2010: 8.

Ozzie, Ray. "Dawn of a New Day." Ray Ozzie ray ozzie's blog. 10 28, 2010. http://ozzie.net/docs/dawn-of-a- new-day/ (accessed 2010).

Perez, Sarah. "Why Cloud Computing is the Future of Mobile." ReadWriteWeb. 08 04, 2009. http://www.readwriteweb.com/archives/why_cloud_computing_is_the_future_of_mobile.php (accessed 2010).

Pollock, Jeffrey T. Semantic Web For Dummies. Indianapolis, Indiana: Wiley Publishing, Inc., 2009.

Puertas, C.. "The effects of mobile technology on work-life outcomes". Ph.D. diss., The Claremont Graduate University ,2009. In Dissertations & Theses: Full Text [database on-line]; available from http://www.proquest.com (publication number AAT 3383638; accessed 2011).

112

Richter, Matt. The Flowering of the Mobile Phone. 12 30, 2010. http://gadgetwise.blogs.nytimes.com/2010/12/30/the-flowering-of-the-mobile-phone/ (accessed 01 2011).

Royal Holloway - University of London. " revolutionise scientific research." Royal Holloway - University of London. 2011. http://www.rhul.ac.uk/aboutus/newsandevents/news/newsarticles/iphonesrevolutionisescientificres earch.aspx (accessed 2011).

Rubin, Andy. "The future of mobile." The Official Google Blog. 09 19, 2008. http://googleblog.blogspot.com/2008/09/future-of-mobile.html (accessed 2011).

Sheth, Amit, and Miltiadis Lytras. Semantic Web-Based Information Systems: State-of-the-Art Applications. United States of America and United Kingdom: CyberTech Publishing, 2007.

Stanley, Morgan. "Internet Trends 2010 by Morgan Stanley Research." Slideshare. 08 2010. http://www.slideshare.net/CMSummit/ms-internet-trends060710final (accessed 2011).

—. "Mobile Internet Vs Desktop Internet." Online Marketing Trends. 01 27, 2011. http://www.onlinemarketing- trends.com/2011/01/mobile-internet-vs-desktop-internet.html (accessed 2011). talis. "Sir Tim Berners-Lee Talks with Talis about the Semantic Web." talis. 02 07, 2008. http://talis- podcasts.s3.amazonaws.com/twt20080207_TimBL.html (accessed 2010).

Tapscott, Don, and Anthony D. Williams. WIKINOMICS. U.S.A: Portfolio, 2010.

Tauberer, Joshua. "What Is RDF." O'REILLY xml.com. 07 27, 2006. http://www.xml.com/pub/a/2001/01/24/rdf.html (accessed 2011).

Telecommunication, Technology & Media. "Best Practices in Mobile Crowdsourcing." Global Intelligence Alliance. 01 14, 2010. http://www.globalintelligence.com/insights-analysis/bulletins/best-practices-in- mobile-crowdsourcing/. telegraph.co.uk. "The future of mobiles: powered by a heartbeat." The Telegraph. 07 22, 2007. http://www.telegraph.co.uk/science/science-news/3301148/The-future-of-mobiles-powered-by-a- heartbeat.html (accessed 2011).

Thompson, Clive. "Clive Thompson on the Death of the Phone Call." WIRED. Julho 28, 2010. http://www.wired.com/magazine/2010/07/st_thompson_deadphone/ (accessed 2010). vine. "What Mobile Cloud Computing means for Mobile Application Development." Smart Developments. 05 01, 2010. http://www.smartdevelopments.org/?p=84 (accessed 2010).

Wagner, Matthias, and Massimo Paolucci. "Enabling Personal Mobile Applications through Semantic Web Services." W3C. n.d. http://www.w3.org/2005/04/FSWS/Submissions/53/DoCoMo-Pos-Paper.pdf (accessed 2011).

Webb, William. "The future of mobile phones: A remote control for you life." THE INDEPENDENT MAGAZINES. 05 14, 2007. http://www.independent.co.uk/student/magazines/the-future-of-mobile-phones-a- remote-control-for-you-life-448816.html (accessed 2011).

113

Wilson, et al. "mSpace Mobile: A Mobile Application." University of Southampton - School of Electronics and Computer Science. 2005. http://eprints.ecs.soton.ac.uk/11101/1/iswc%2Dfinal.pdf.

Yan, et al. "Demo Abstract: mCrowd - A Platform for Mobile Crowdsourcing." LASS - Laboratory for Advanced System . 11 2009. http://lass.cs.umass.edu/~yan/pubs/mCrowd_Demo_SenSys09.pdf (accessed 2010).

Zandbergen, Paul A. "Accuracy of iPhone Locations: A Comparison of Assisted GPS, WiFi and Cellular Positioning." Dr. Paul Zandbergen. 2009. http://www.paulzandbergen.com/PUBLICATIONS_files/Zandbergen_TGIS_2009.pdf (accessed 2011).

Zeman, Eric. "Smartphone 2010: What Your Future Phone Will Be Packing." InformationWeek. 02 23, 2008. http://www.informationweek.com/news/mobility/showArticle.jhtml?articleID=206800816 (accessed 2011).

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