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Rendering refractive caustics from transparent objects on opaque objects is computationally intensive. This paper presents a fast rendering technique for transparent objects and refractive caustics due to transparent objects on the opaque object. To calculate the intensities of caustics, we set virtual planes around the opaque object and store the intensities of caustics on the virtual planes a...

Beneficial use of common information spaces in organizational environments requires consideration of the heterogeneous set of contexts, of which these systems are part. A more thorough understanding of the meshing of contexts and of interaction through more or less opaque systems with active artefacts is likely to result in more useful systems. This essay relates my perspective on common inform...

The ability of cetaceans to explore and interpret their world via echolocation has received considerable attention during recent years, and the resulting body of work has revealed a sophisticated cetacean echolocation system. In addition, a number of recent studies suggest that dolphins can relate information that they receive from vision with information that they obtain from echolocation when...

The repair of a fractured porcelain surface with a resin composite was investigated. The effects of applying an opaque resin to porcelain surfaces, which were silanated by a ceramic primer from a repair kit or by an experimental silane coupling agent, were studied. The porcelain surfaces were silanated for 10 sec and 60 min. Three types of adherents were evaluated: opaque resin with light irrad...

Many systems run rich analytics on sensitive data in the cloud, but are prone to data breaches. Hardware enclaves promise data confidentiality and secure execution of arbitrary computation, yet still suffer from access pattern leakage. We propose Opaque, a distributed data analytics platform supporting a wide range of queries while providing strong security guarantees. Opaque introduces new dis...

The World Wide Web lacks support for explaining information provenance. When web applications return results, many users do not know what information sources were used, when they were updated, how reliable the source was, what information was looked up versus derived, and if something was derived, how it was derived. In this paper we introduce the Inference Web (IW) that addresses the problems ...

Non-genetic phenotypic variations play a critical role in the adaption to environmental changes in microbial organisms. Candida albicans, a major human fungal pathogen, can switch between several morphological phenotypes. This ability is critical for its commensal lifestyle and for its ability to cause infections. Here, we report the discovery of a novel morphological form in C. albicans, refer...

Candida albicans WO-1 switches reversibly and at high frequency between a white and an opaque colony-forming phenotype that includes dramatic changes in cell morphology and physiology. A misexpression strategy has been used to investigate the role of the opaque-phase-specific gene PEP1 (SAP1), which encodes a secreted aspartyl proteinase, in the expression of the unique opaque-phase phenotype a...