Abstra~. Three parallel algorithms for computing the QR-factorization of a matrix are presented. The discussion is primarily concerned with implementation of these algorithms on a computer that supports tightly coupled parallel processes sharing a large common memory. The three algorithms are a Householder method based upon high-level modules, a Windowed Householder method that avoids fork-join...

The diagnosis of multiple faults is significantly more difficult than singular fault diagnosis. However, in realistic industrial systems the possibility of simultaneous occurrence of multiple faults must be taken into account. This paper investigates some of the limitations of the diagnostic model based on the simple binary diagnostic matrix in the case of multiple faults. Several possible inte...

The luminescence spectra of europium (3 + ) doped rare earth oxyhydroxides, REOOH :Eu 3 + (RE = Y and Lu), were studied and analyzed at 77 and 300 K under UV and dye laser excitation. The observed 7 F 0 _ 4 level schemes were simulated with the aid of the phenomenological crystal field theory. The descending symmetry method from C2 v to Cs symmetry was used in the simulation. Good results were ...

A comprehensive study of multiresolution decompositions of planar domains into triangles is given. A model introduced that is more general than other multiresolution models proposed in the literature. The model is based on a collection of fragments of plane triangulations arranged into a partially ordered set. Diierent decompositions of a domain can be obtained by combining diierent fragments f...

This paper presents an O(n2 log n) algorithm for computing the symmetric singular value decomposition of square Hankel matrices of order n, in contrast with existing O(n3) SVD algorithms. The algorithm consists of two stages: first, a complex square Hankel matrix is reduced to a complex symmetric tridiagonal matrix using the block Lanczos method in O(n2 log n) flops; second, the singular values...

This work proposes an efficient methodology to synthesize timed circuits from high level specification languages. In particular, this paper presents a systematic procedure for translating channel-level models to time Petri net descriptions. Care is taken in this translation to guarantee that there are no state coding violations in the resulting nets greatly simplifying the synthesis process. Th...

.H\ZRUGV: computational workflow, programmable integrator, semantic mediation $EVWUDFW As great amount of data are being produced and accumulated in Life Sciences, information access and consequent integration in analytical and computational methods become critical issues in order to conduct research. In this work we describe how the synergic combination of a high-level programmable planner eng...

Accurate groundwater level modeling and forecasting contribute to civil projects, land use, citys planning and water resources management. Combined Wavelet-Artificial Neural Network (WANN) model has been widely used in recent years to forecast hydrological and hydrogeological phenomena. This study investigates the sensitivity of the pre-processing to the wavelet type and decomposition level in ...

abstract in this paper,using a structural decomposition analysis (sda) and the latest available input-output tables we investigate the sources of labor productivity growth in norway, south korea and iran. then, the contribution of each source in the growth of labor productivity is discussed. the results show that among six factors, value added coefficient is the most influencing factoracross al...