Computer Program for Calculation on Multi-diffraction Field Intensity in Mountainous Region

A computer program for calculation of sample size.

Sample size must be determined while planning a study to ensure that valid conclusions can be drawn when the study is over. different formulae for calculating the required size of the sample are used for different study designs and situations. A computer program is described here to ease the complexity of calculation of sample size for studies designed to use students 't' test.

MATLAB-based program for optimization of quantum cascade laser active region parameters and calculation of output characteristics in magnetic field

Characterizing and Assessing the Agricultural Land Use Intensity of the Beijing Mountainous Region

Recently, land use and land cover change have received increased attention, and an approach is required that can assess agricultural land use intensity on a general basis. This study demonstrated the usefulness of a tool for characterizing and assessing agricultural land use intensity in Beijing mountainous region. An emergy analysis and principal component analysis (PCA) were adopted to obtain...

Calculation of diffraction effects on the average phase of an optical field.

We report on algorithms for the computation of the average phase of a beam over a detector in the near field. The basic idea is to reconstruct the optical field numerically and then use a quadrature algorithm to evaluate the quantity of interest. The various algorithms that employ discrete Fourier transform techniques for the computation of the field are described, and numerical tests that asse...

THE INTENSITY FORECASTING EXPERIMENT A NOAA Multiyear Field Program for Improving Tropical Cyclone Intensity Forecasts

M OTIVATION FOR IFEX. One of the key activities in the National Oceanic and Atmospheric Administration’s (NOAA’s) strategic plan is to improve the understanding and prediction of tropical cyclones (TCs). The NOAA National Hurricane Center (NHC), a part of the National Centers for Environmental Prediction (NCEP), is responsible for forecasting TCs in the Atlantic and east Pacific basins, while N...