Consumer electronics and embedded devices often allow the installation of applications and firmware upgrades from user-provided mass-storage devices. To protect the integrity of these devices and the associated electronic markets, the software packages are protected by cryptographic signatures. The software installation code assumes that files on attached mass-storage devices cannot change whil...

We describe a highly scalable algorithm for secure system evolution in an infrastructure for widely distributed Byzantine fault-tolerant applications. To maintain high availability, the system and its applications evolve on-line, providing uninterrupted service during installation of upgrades. Installations are made to appear atomic with respect to other installations and application execution ...

OBJECTIVE  To estimate the effect of playing Pokémon GO on the number of steps taken daily up to six weeks after installation of the game. DESIGN  Cohort study using online survey data. PARTICIPANTS  Survey participants of Amazon Mechanical Turk (n=1182) residing in the United States, aged 18 to 35 years and using iPhone 6 series smartphones. MAIN OUTCOME MEASURES  Number of daily steps t...

For a fast return of investment, network providers have to offer new services for the upcoming 3G mobile communication systems. Unfortunately 3G systems suffer by high installation costs and low quality of services in terms of high delays and low bandwidth. These drawbacks exclude many promising services such as real–time video conferences and multi– player gaming. Furthermore, high network ins...

This article describes an interactive video installation that was developed to inform and engage people about one of the most upsetting geopolitical issues of our time: The Israeli-Palestinian conflict. Several layers of maps information have been employed into a computer application, which was programmed with the open source tool Processing. The video installation was chosen as a medium, to ac...

We present a public-display-and-mobile-based digital art installation named WishBoard that translates the essence of a chalk-and-wall based art installation called ‘Before I Die’ into a technological communal expression. Our studies show that public sharing of personal wishes leverage the connection inside a community, creating a feeling of neutral ground for gathering, giving a sense of third ...

Ceramic floor tile systems can provide a durable finish; however, if internal stresses are allowed to accumulate in the tile system, fractured, buckled, and/or hollow-sounding tiles may develop. Using case studies of residential structures, this paper will discuss common perils that cause damage to ceramic floor tile systems and how these perils can be avoided through proper installation and ma...