Conceptual Information Systems unfold the conceptual structure of data stored in relational databases. In the design phase of the system, conceptual hierarchies have to be created which describe diier-ent aspects of the data. In this paper, we describe two principal ways of designing such conceptual hierarchies, data driven design and theory driven design, and discuss advantages and drawbacks. ...

A seismic method (e.g., surfaceor body-wave method) has been often used in pavement engineering to evaluate such critical constructional parameters as the E-modulus and Poisson’s ratio. Conventional method usually uses one or two-channel recording device (e.g., dynamic signal analyzer) for data acquisition whose cost is by no means trivial. In addition, recent applications with the multichannel...

The cost of building a digitizing system for image-based rendering can be prohibitive. Furthermore, the physical size, weight, and complexity of these systems has, in effect, limited their use to small objects and indoor scenes. The primary motivations for this project is to reduce the acquisition cost of light-field capture devices and create a portable system suitable for acquiring outdoor sc...

The cost of building a digitizing system for image-based rendering can be prohibitive. Furthermore, the physical size, weight, and complexity of these systems has, in effect, limited their use to small objects and indoor scenes. The primary motivations for this project is to reduce the acquisition cost of light-field capture devices and create a portable system suitable for acquiring outdoor sc...

The triple to double coincidence ratio (TDCR) liquid scintillation measurement technique is commonly used in national metrology institutes (NMIs) perform standardization of pure beta emitters. LNE-LNHB historical device, RCTD1, a quite large which has been developed and over the past 30 years with its associated electronics for measurements various radionuclides. During last 4 two new portable ...

The Portable Extensible Toolkit for Scientific computation (PETSc) library delivers scalable solvers nonlinear time-dependent differential and algebraic equations numerical optimization. PETSc design performance portability addresses fundamental GPU accelerator challenges stresses flexibility extensibility by separating the programming model used application from that library, it enables develo...