This paper proposes a mechanism for expressing and enforcing security policies for shared data. Security policies are expressed as stateful meta-code operations; meta-code can express a broad class of policies, including access-based policies, use-based policies, obligations, and sticky policies with declassification. The meta-code is interposed in the filesystem access path to ensure policy ...

An attacker who controls a computer in an overlay network can effectively control the entire overlay network if the mechanism managing membership information can successfully be targeted. This article describes Fireflies, an overlay network protocol that fights such attacks by organizing members in a verifiable pseudorandom structure so that an intruder cannot incorrectly modify the membership views ...

Temaet for dette studiet var motivasjon i samfunnsfag gjennom bruken av ulike dramametoder. Hensikten med studiet var å få innsikt i, og se hvordan lærere kan ta i bruk drama som læringsform for å motivere elevene for læring. En tok utgangspunkt i følgende problemstilling: Hvordan kan ulike dramametoder brukes i samfunnsfag for å motivere elevene til læring? En benyttet seg av kvalitativ ...

Lifelogging is becoming widely deployed outside the scope of solipsistic self quantification. In elite sport, the ability to utilize these digital footprints of athletes for sport analytic has already become a game changer. This raises privacy concerns regarding both the individual lifelogger and the bystanders inadvertently captured by increasingly ubiquitous sensing devices. This paper describes ...