BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:(Research) Influences of wind on radiowave propagation in foliated
  fixed wireless system / (Research) Information flow control for static en
 forcement of user-defined privacy policies - Sören Preibusch and Tien Han
  Chua
DTSTART:20110509T130000Z
DTEND:20110509T140000Z
UID:TALK30431@talks.cam.ac.uk
CONTACT:Andrew Rice
DESCRIPTION:Influences of wind on radiowave propagation in foliated fixed 
 wireless system\, Tien Han Chua\n\nFrom field measurement data collected o
 ver a two-year period\, the influences of wind speed and wind direction on
  temporal fading in foliated fixed wireless links will be presented. The p
 hysical wind-foliage interactions and radiowave propagation mechanisms whi
 ch could contribute to such fading events will be discussed. Finally\, the
  possibilities to model the temporal fading through ray tracing based on g
 eometrical optics and uniform theory of diffraction will be investigated.\
 n\nInformation flow control for static enforcement of user-defined privacy
  policies\, Sören Preibusch \n\nWeb sites for retailing or social network
 ing could turn privacy into a competitive advantage as they implement supe
 rior data protection practices compared to alternative service providers. 
 One important pre-requisite is the enforceability of privacy guarantees. I
 n the past\, information leaks at companies who promote themselves as priv
 acy-friendly demonstrates that current certification practices seem insuff
 icient.\n\nInformation flow control (IFC) allows software programmers and 
 auditors to detect and prevent the sharing of information between differen
 t parts of a program which\, as a matter of policy\, should be kept logica
 lly separate. However\, the lack of widespread use of IFC suggests technol
 ogy and usability barriers to adoption.\n\nI will review pragmatic issues 
 and systematic limitations of using JIF\, a programming language that prov
 ides IFC on top of Java. The emphasis will be on personal experiences and 
 lessons learnt in implementing the first Web-based IFC case-study with cus
 tomer-negotiated restrictions on data recipients and usage. As an outlook\
 , I'll consider how combining server-side information flow control with cl
 ient-side scripting could implement the sticky privacy policy paradigm.
LOCATION:SS03\, William Gates Building
END:VEVENT
END:VCALENDAR