Integrated sensor and media modeling environment has been developed to simulate subsurface sensing systems and environmental parameters relevant to the subsurface sensing modalities. The modeling environment is design...
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Integrated sensor and media modeling environment has been developed to simulate subsurface sensing systems and environmental parameters relevant to the subsurface sensing modalities. The modeling environment is designed to represent complexity in subsurface features, sensor models, and the integration of the sensors with the subsurface environment. The ability to model complex subsurface environments and any potential random distribution of subsurface properties allows for realistic modeling of heterogeneous subsurface environments such as bridged deck/pavement systems. Many applications can benefit from the modeling, simulation, and interpretation capabilities in the new modeling environment that supports improved understanding of system behavior through simulations to evaluate the ability of a particular modality to detect defects. While numerous modeling packages exist to simulate different wave-based modalities, the integrated sensor and media modeling environment is developed to, in a straightforward manner, physically represent the complex subsurface civil infrastructure environment. Physical modeling capabilities enable the object-orientedprogramming environment facility portability to other application domains as a generic volume serves as the boundaries for internal elements modeled to represent realistic changes in material properties and buried objects. Model development is demonstrated on a realistic bridge deck example.
This article approaches scientific software architecture from three analytical paths. Each path examines discrete time advancement of multiphysics phenomena governed by coupled differential equations. The new object-o...
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This article approaches scientific software architecture from three analytical paths. Each path examines discrete time advancement of multiphysics phenomena governed by coupled differential equations. The new object-oriented Fortran 2003 constructs provide a formal syntax for an abstract data type (ADT) calculus. The first analysis uses traditional object-oriented software design metrics to demonstrate the high cohesion and low coupling associated with the calculus. A second analysis from the viewpoint of computational complexity theory demonstrates that a more representative bug search strategy than that considered by Rouson et al. (ACM Trans. Math. Soft. 34(1) (2008)) reduces the number of lines searched in a code with lambda total lines from O(lambda(2)) to O(lambda log(2) lambda), which in turn becomes nearly independent of the overall code size in the context of ADT calculus. The third analysis derives from information theory an argument that ADT calculus simplifies developer communications in part by minimizing the growth in interface information content as developers add new physics to a multiphysics package.
This paper presents a computer aided system that aims to improve the quality of data for hydroelectric plants. This system consists of two modules. The first is a relational database that organizes, standardizes and m...
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ISBN:
(纸本)9781424438105
This paper presents a computer aided system that aims to improve the quality of data for hydroelectric plants. This system consists of two modules. The first is a relational database that organizes, standardizes and manages data from hydroelectric plants. The second module allows a user to build, store and manage advanced queries on this or certain other databases. The data manager and the queries builder were tested with data from Brazilian hydroelectric plants and the results show the potential for a significant improvement in terms of efficiency for the operation planning of electrical power systems. Planning has strong dependence on the quality of the data used in mathematical models and other built-in computational tools. The software project and the computational implementation of these modules use the Object-oriented Paradigm, the C++ programming Language and the Structured Query Language (SQL). This assures a modern and efficient structure for the system.
The traditional way of high voltage (HV) measuring has some intrinsic shortcomings. With the recent improvement in digital measuring techniques and computer, it turns to be replaced by the digital automated measuring....
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ISBN:
(纸本)0780375254
The traditional way of high voltage (HV) measuring has some intrinsic shortcomings. With the recent improvement in digital measuring techniques and computer, it turns to be replaced by the digital automated measuring. The Virtual Instrument (VI), which is a new technology in signal detecting, analyzing and processing, has been our main focus. This paper introduces the concept and characters of VI, its three main types and presents a PC-based VI to measure 8/20 mu s impulse current. The VI is implemented in the two ways: the popular objected-oriented programming language-Visual C++, and the famous graphical programming environment-LabVIEW. Signals are processed with the digital filter, smoothing window and Fast Fourier Transformation (FFT). Wave parameters can be calculated quickly and shown in the soft front panel. It can also be used to measure other high voltage waves after changed a little.
GeoSheet (version 1.0) is an interactive visualization tool for visualizing geometric algorithms in distributed environments. It provides features such as interactive visualization of program states for debugging, hig...
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GeoSheet (version 1.0) is an interactive visualization tool for visualizing geometric algorithms in distributed environments. It provides features such as interactive visualization of program states for debugging, high-level graphical input/output manipulation facilities for geometric objects, reuse of existing data structures and algorithms implementation, and more importantly distributed executions on heterogeneous machines at different sites. To minimize development effort of the tool we make use of existing software packages available in public domain. Specifically we extend Xfig with a message-driven interface and a socket-based interprocess communication (IPC) mechanism. This extended -Xfig is the backbone of this version of the tool. Object-orientedprogramming methodology is used to construct the visualization interface. By deriving from traditional data type and algorithm libraries, our abstract GeoObject representation super-classes are easy to use, easy to construct, and highly portable. Although GeoSheet is not restricted to a particular application domain or any programming language, this release only contains geometric algorithm implementations in C++ and LEDA. We hope that the geometric algorithm designers will find it useful when they develop their algorithms.
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