A transmitter without channel state information (CSI) wishes to send a delay-limited Gaussian source over a slowly fading channel. The source is coded in superimposed layers, with each layer successively refining the description in the previous one. The receiver decodes the layers that are supported by the channel realization and reconstructs the source up to a distortion. The expected distorti...

The Set Partitioning in Hierarchical Trees (SPIHT) approach for still image compression proposed by Said and Pearlman [8], is one of the most efficient embedded gray image compression schemes till date. The algorithm relies on a very efficient scanning cum bit-allocation scheme for quantizing the coefficients obtained by a wavelet decomposition of an image. In this paper, we adopt this scheme t...

Coordinate descent is one of the most popular approaches for solving Lasso and its extensions due to its simplicity and efficiency. When applying coordinate descent to solving Lasso, we update one coordinate at a time while fixing the remaining coordinates. Such an update, which is usually easy to compute, greedily decreases the objective function value. In this paper, we aim to improve its com...

The paper provides an overview of the fundamental issues confronting scalable video compression, together with some of the most promising general approaches to addressing these issues. For motivation, the paper sketches a compelling application in remote browsing of video, whose realization is not possible without efficient highly scalable video compression technology. The paper outlines some o...

One of the keys for an optimal Eurasian perch aquaculture broodstock management is being able to determine sex individuals. For perch, compared with other methods identification fish and according 3R principle (replacement, reduction refinement), ultrasonography a rapid, non-lethal, non-invasive accurate method. During two successive experiments, we used ultrasound identify gender immature broo...

We provide a complete characterization of the rate-distortion region for the multistage successive refinement of the Wyner-Ziv source coding problem with degraded side informations at the decoder. Necessary and sufficient conditions for a source to be successively refinable along a distortion vector are subsequently derived. A source-channel separation theorem is provided when the descriptions ...

To enhance models for refinery processes it seems inevitable to increase the level of compositional detail to a much higher level than today. In previous work, we have developed a simulation technique for steady-state simulation, which pays respect to the particularities of this type of detailed composition models. With this new technique, it seems to be possible to significantly lower the comp...

This thesis looks at efficient information processing for two network applications: content delivery with caching and collecting summary statistics in wireless sensor networks. Both applications are studied under the same paradigm: function computation over networks, where distributed source nodes cooperatively communicate some functions of individual observations to one or multiple destination...

modern vehicle bodies make intensive use of high strength steel grades to meet the contradicting demand of lighter weight and simultaneously better mechanical performance. for many steel grades microalloying by niobium is the key to achieve their characteristic property profile. in hsla steels niobium enhances the strength primarily by grain refinement. in interstitial free high strength steels...

Schema evolutivity is a major objective in database design. Generalization hierarchies allow the definition of new concepts by successive refinement of existing ones. This paper deals with the insertion of a new concept (object, entity, relationship ...) in a generalization hierarchy. This insertion is achieved using the inclusion semantic relations between object structures through a similarit...