Proliferation of pervasive devices capturing sensible data streams, e.g. mobility records, raise concerns on individual privacy. Even if the data is aggregated at a central server, location data may identify a particular person. Thus, the transmitted data must be guarded against reidentification and an un-trusted server. This paper overcomes limitations of previous works and provides a privacy ...

This paper studies Data Stream Management Systems that combine real-time data streams with historical data, and hence access incoming streams and archived data simultaneously. A significant problem for these systems is the I/O cost of fetching historical data which inhibits processing of the live data streams. Our solution is to reduce the I/O cost for accessing the archive by retrieving only a...

A novel compressive-sensing based signal multiplexing scheme is proposed in this paper to further improve the multiplexing gain for multiple input multiple output (MIMO) system. At the transmitter side, a Gaussian random measurement matrix in compressive sensing is employed before the traditional spatial multiplexing in order to carry more data streams on the available spatial multiplexing stre...

Kingdon's multiple streams approach has recently been applied to study implementation across sectors or levels of government. Building on these contributions, we suggest that two streams are especially important in shaping implementation: organizational problem constructions, and political pressure from the centre. These variables produce a four-way typology of implementation modes. We test the...

Until now single values of IRR are traditionally used to estimate the time value of cash flows. Since uncertainty exists in estimating cost data, the resulting decision may not be reliable. The most commonly cited drawbacks to using the internal rate of return in evaluatton of deterministic cash flow streams is the possibility of multiple conflicting internal rates of return. In this paper we p...

We present a novel 3D scanning system with the potential for interactive acquisition and visualization of dynamic scenes. Our system uses a spatiotemporally adaptive sampling strategy, and can take advantage of multiple simultaneous scanning devices operating at different resolutions. We also employ a level set framework for reconstructing potentially dynamic scenes from multiple concurrent str...