J. Bielak¹, O. Ghattas², E.-J. Kim³

CMES-Computer Modeling in Engineering & Sciences, Vol.10, No.2, pp. 99-112, 2005, DOI:10.3970/cmes.2005.010.099

Abstract We present a parallel octree-based finite element method for large-scale earthquake ground motion simulation in realistic basins. The octree representation combines the low memory per node and good cache performance of finite difference methods with the spatial adaptivity to local seismic wavelengths characteristic of unstructured finite element methods. Several tests are provided to verify the numerical performance of the method against Green's function solutions for homogeneous and piecewise homogeneous media, both with and without anelastic attenuation. A comparison is also provided against a finite difference code and an unstructured tetrahedral finite element code for a More >

R. Asplund

Canadian Journal of Urology, Vol.11, No.4, pp. 2322-2326, 2004

Abstract Objective: To assess the relationship between nocturia, thirst and the perception of dryness in the eyes and mouth in a group of elderly men and women.
Materials and methods: The study comprised 6103 elderly men and women recruited by a questionnaire from a group of pensioners (n=10216; response rate 61.3%). The age of the men and the women was 73.0 (6.0) and 72.6 (6.7) years, respectively. The questionnaire included questions on their health, diseases and symptoms, drugs, sleep habits and the number of nocturnal voiding episodes.
Results: Dryness of the eyes increased from 6.5% in men without nocturnal… More >

Ragnar Asplund^1,2

Canadian Journal of Urology, Vol.9, No.4, pp. 1588-1591, 2002

Abstract Objective: To assess the temporal trend in surgical treatment of benign hypertrophy of the prostate in Sweden, particularly the possible influence of nocturia on the probability to be treated by a transurethral resection operation of the prostate (TURP).
Materials and methods: There were 2501 elderly men recruited by a questionnaire from a group of pensioners (n=4035; response rate 62%). Their age was 73.3 (6.4) years. The questionnaire included questions on their health and diseases, drugs, sleep habits and the number of nocturnal voiding episodes. Data on deaths from July 1, 1992 to December 31, 1997 were obtained.
Results:… More >