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Abstract:Abstract The results of signal strength measurements and ray tracing model calculations of indoor propagation at 900 and 1800 MHz are presented. Corridors are being illuminated by ceiling mounted 2 dB gain omni antennas. The objectives of these experiments are to study behavior of the received signal strength at 900 and 1800 MHz in comparison of cell coverage, signal attenuation and variation through the line of sight (LOS) and non line of sight (NLOS) orientation of halls. It is shown that large fluctuations occur between average signal levels in LOS and NLOS case of propagation. It is also obtained that ray tracing model neglecting diffraction effects work better for LOS then NLOS, and requires detailed database information for better prediction
Abstract A reference value is sought that provides unbiased estimates of the differences between any pair of laboratories. It is found that in general no single-valued reference value exists that yields an unbiased estimate of the difference for all possible pairs of laboratories. In all cases the best estimate of laboratory difference is evaluated strictly in terms of differences in results. It is concluded that the concept of a comparison reference value is both unnecessary and unsuited to the purpose of pair-wise comparisons of laboratories
Abstract The comparison map profile (CMP) method compares two spatially explicit data sets (original images) at each point and through several spatial scales simultaneously. The CMP combines the moving window concept with similarity indices for quantitative or qualitative data to visualize and quantify outputs: changes in mean similarity value and its variability through scales are reported on a profile, similarities between regions are estimated on monoscale maps, and their persistence through scales assessed on a mean multiscale map. The CMP...
Abstract This study deals with the inverse problem in ocean acoustic tomography. Different inversion methods are compared on experimental data recorded for 15 days during the Thetis 2 Campaign. This experiment was carried out in 1994 in the Mediterranean Basin and used broadband signal that were received on a vertical array. The inversion methods use both ray and mode theory to estimate the environmental sound speed profile. This paper describe different inversion methods based on a modal decomposition of the sound speed profile (empirical ort...
Abstract This study deals with the inverse problem in ocean acoustic tomography. Different inversion methods are compared on experimental data recorded for 15 days during the Thetis 2 Campaign. This experiment was carried out in 1994 in the Mediterranean Basin and used broadband signal that were received on a vertical array. The inversion methods use both ray and mode theory to estimate the environmental sound speed profile. This paper describe different inversion methods based on a modal decomposition of the sound speed profile (empirical ort...
Animal Improvement Programs Laboratory, Agricultural Research Service, USDA, Beltsville, MD 20705-2350.
Department of Radiology, University of Iowa College of Medicine, Iowa City.
Imperial Cancer Research Fund, Epidemiology Unit, Radcliffe Infirmary, Oxford, UK.
Imperial Cancer Research Fund, Epidemiology Unit, Radcliffe Infirmary, Oxford, UK.
Genotoxic effectivity--comparison of 36 nitrated furan and arenofuran derivatives on a quantitative scale. Statistical comparison of T7 and other short-term tests. Ront? G, Gr?f P, Buisson JP, Einhorn J, Demerseman P. Institute of Biophysics, Semmelweis Medical University, Budapest, Hungary. Thirty-six nitrated furan and arenofuran derivatives were measured and quantitatively characterized by the T7 inactivation test. A wide range of substances previously studied allowed us to compare the collected quantitative data with those obtained by ot...
A comparison of optimal and suboptimal RNA secondary structures predicted by free energy minimization with structures determined by phylogenetic comparison. Zuker M, Jaeger JA, Turner DH. Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ontario. This article describes the latest version of an RNA folding algorithm that predicts both optimal and suboptimal solutions based on free energy minimization. A number of RNA's with known structures deduced from comparative sequence analysis are folded to test program per...
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as Class B-One, or High-Risk. The researchers work in the field of addiction treatment. And theyve b...
of Drugs Act, as Class B-One, or High-Risk. The researchers work in the field of addiction treatment...
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The two most common assault rifles in the world are the Colt...
The two most common assault rifles in the world are the Colt...
The two most common assault rifles in the world are the Colt...
The two most common assault rifles in the world are the Colt...
The two most common assault rifles in the world are the Colt...
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