Methods of Calculating the Mean and Variance of Power Sums with Log-normal Components
نویسندگان
چکیده
Different methods of calculation the mean and variance of power sums with log-normal components of the field strength in the planning and compatibility of radio systems analysis were described. Samples of the numerical calculations of the coverage areas for DVB-T Single Frequency Network (SFN) were performed. Practical scope for each method was discussed.
منابع مشابه
Comparing Mean Vectors Via Generalized Inference in Multivariate Log-Normal Distributions
Abstract In this paper, we consider the problem of means in several multivariate log-normal distributions and propose a useful method called as generalized variable method. Simulation studies show that suggested method has a appropriate size and power regardless sample size. To evaluation this method, we compare this method with traditional MANOVA such that the actual sizes of the two methods ...
متن کاملComparing the Effectiveness of the Non- Soft Training Package of Working Memory and Selective Attention With Captain’s Log Cognitive Empowerment Software Package on the Components of the Working Memory in Girls With Temporal Lobe Epilepsy
Background and Objective: The purpose of this study was to compare the effectiveness of the non-computerized training package of working memory (WM) and selective attention with captain’s Log software on the components of WM. Materials and Methods: The present study was conducted in a quasi-experimental design, with non- random targeted sampling, and pre-test, post-test, follow-up, and control...
متن کاملComparison of Executive Functions in Preterm and Normal Children
Introduction: Executive functions refer to the use of cognitive processes to control thoughts and emotions. The purpose of this study was to compare the executive functions in premature and normal children. Methods: The present study is a causal comparative study. The statistical population of this study was Tabriz Premature Children that 30 of these children were selected by using available sa...
متن کاملClosed-form confidence intervals on measures of precision for an interlaboratory study.
Within the pharmaceutical industry it is common practice to transfer analytical methods from one laboratory to other laboratories. An experiment or interlaboratory study is performed to estimate the repeatability, the intermediate precision, and the reproducibility of the analytical method. These measures of precision are quantified by appropriate sums of variance components from an analysis of...
متن کاملChoosing the Best Hierarchical Clustering Technique Based on Principal Components Analysis for Suspended Sediment Load Estimation
1- INTRODUCTION The assessment of watershed sediment load is necessary for controling soil erosion and reducing the potential of sediment production. Different estimates of sediment amounts along with the lack of long-term measurements limits the accessibility to reliable data series of erosion rate and sediment yield. Therefore, the observed data of suspended sediment load could be used to ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008