Vi er ikke alene! eBags og kontekst

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Vi er ikke alene! eBags og kontekst

• - 16-02-2004 -
• Allan Hansen (fah_at_daimi.au.dk)

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Digital Grafiti

• KajSæt dine digitale tags med mobilen!
• Digital graffiti augmenting the environment
  without spoiling it
• Long et.al (1996), CyBARguide
• ...the user can add personalized information
  including personal impressions that may be useful
  for future reference, a type of virtual
  grafitti.
• TagandScan (http//www.tagandscan.com/)
• ...et engelsk firma har opfundet den virtuelle
  graffiti. Ved hjælp af mobiltelefonen kan man
  sætte elektroniske "tags" de steder man har lyst
  til det. Man kan sætte billeder eller blot skrive
  en tekst. De steder man kan sætte sine tags
  svarer til steder i den virkelige verden, blot i
  en elektronisk kopi tilgængelig via nettet.

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Områder

• eBags
• Lokations baserede systemer (LBS)
• Kontext baserede systemer (CBS)

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eBag
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Den Digitale Skole
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Skoleportal Århus
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Ad Hoc Classroom and eSchoolbag Systems

• Chang and Sheu (2002)
• Design and Implementation of Ad Hoc Classroom
  and eSchoolbag Systems for Ubiquitous Learning

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Ad Hoc Classroom

• In the Ad Hoc classroom system, teacher and
  students are able to create an Ad Hoc classroom
  in outdoor and take lesson anytime. The learning
  activities are thus can be executed anywhere.
• Components
• E-Blackboard subsystem
• Voice and ImageTransmission subsystem
• Powerpoint Broadcasting subsystem
• Text Communication subsystem

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eSchoolbag

• The eShoolbag system provides students with
  function of access of the electronic book,
  knowledge, and teaching material. Through the use
  of eShoolbag system, students can also download
  or upload their homework, teachers notice
  announcement, or do exercise anytime and
  anywhere.
• Components
• Electronic Book
• Electronic Notebook
• Electronic Contact Book
• Electronic Tool Box
• Electronic Scheduler
• Electronic Weekly Report
• Electronic AddressBook

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Lokations baserede systemer
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Ikke en ny ting!

• 1992 Active Badges
• GUID
• Broadcast over IR
• IR sensorer
• Zone baseret
• 1992 The PARCTAB
• PDA baseret
• IR sensorer
• Zone baseret
• 1997 The Bat Ultrasonic Location System
• Ultralyds impulser
• Triangulering

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BluePosition BLIS4

• Bluetooth Location Information System
• Zone baseret
• Triangulering gt5m
• Applikationer
• BLIS4WS-Lock
• BLIS4Phone
• Hardware
• BlipNodeClass 1 radio that gives Bluetooth
  coverage up to 100 meter. The Bluetooth coverage
  can be adjusted/limited to a smaller area.

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BlueFOAF discover nearby friends with Bluetooth
Edd Dumbill It's a nice toy and might have
some useful applications. Figure out when your
boss is in the office. Find friends at a
conference or in a bar.
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BlueFOAF The semantic Web

• Friend-of-a-Friend (FOAF)
• RDF
• ltrdfRDF
• xmlnsrdf"http//www.w3.org/1999/02/22-rdf-synta
  x-ns" xmlnsfoaf"http//xmlns.com/foaf/0.1/"gt
• ltfoafPersongt
• ltfoafnamegtEdd Dumbilllt/foafnamegt
• ltfoafmbox rdfresource"mailtoedd_at_xml.com"/gt
• ...
• ltfoafdepiction rdfresource"http//heddley.com/
  edd/images/edd-shoulders.jpg" /gt
• ltfoafknowsgt
• ltfoafPersongt
• ltfoafmbox rdfresource"mailtosimon_at_xmlhack.c
  om" /gt ltfoafnamegtSimon St.Laurentlt/foafnamegt
• ltrdfsseeAlso rdfresource"http//simonstl.com
  /foaf.rdf" /gt
• lt/foafPersongt
• lt/foafknowsgt
• lt/foafPersongt
• lt/rdfRDFgt

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Kontekst baserede systemer
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DashBoard

• The goal of the dashboard is to automatically
  show a user useful files and other objects as he
  goes about his day. While you read email, browse
  the web, write a document, or talk to your
  friends on IM, the dashboard does its best to
  proactively find objects that are relevant to
  your current activity, and to display them in a
  friendly way, saving you from digging around
  through your stuff like a disorganized filing
  clerk.

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DashBoard BlueFOAF
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WWMX

• Microsoft Research (2002)
• The World Wide Media eXchange (WWMX) database
  indexes large collections of image media by
  several pieces of metadata including timestamp,
  owner, and critically, location stamp.
• Imagine a publicly accessible, centralizedindex
  of all of the photos on the Internet.

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WWMX