We present a method of measuring the refractive index of dry gases absolutely at 632.8 nm wavelength using a Fabry-Perot cavity with an expanded uncertainty of <3×10⁻⁹ (coverage factor k=2). The main contribution to this uncertainty is how well vacuum-to-atmosphere compression effects (physical length variation) in the cavities can be corrected. This paper describes the technique and reports re...

15.1 NUMBER AND SIZE OF ANTENNA ELEMENTS ............................................................2 15.2 LIMITING CONFIGURATIONS, NUMBER OF CONFIGURATIONS, AND RESOLUTION SCALE FACTOR ......................................................................................................................2 15.2.1 Size of the Most Compact Array........................................................

this study examines educational inequalities between boys and girls in secondary schools by using context, space, human resources, education coverage, education process, outputs and outcomes as comparative indicators. the research study is a descriptive - analytical survey. the required data have been collected through both using documents and questionnaires. using stratified random sampling, t...

abstract the objective of the present study is to assess the performance of 18 irrigation districts from ten countries in the world using the benchmarking method and data mining analysis (cluster analysis). irrigation networks of dez, sefidrood, tajan and voshmgir from iran have been compared with 14 irrigation districts from nine other countries. the k- means algorithm was used to analyze the ...

introduction: neglecting to define important criteria in developing a basic health insurance package and to notice their real roles will result in defining a package which is politically unacceptable, non-economical, technically inefficient or mixed of them. therefore development of basic health insurance package should be according to appropriate composition of influential criteria. this study...

The main idea of this paper is to solve coverage problem in distributed wireless sensor network (WSN) by increasing sensor nodes coverage. This paper proposes a modified discrete binary particle swarm optimization algorithm for Wireless Sensor Network (WSN) nodes placement so that the maximum coverage is obtained.PSO is a real value algorithm, and the discrete PSO is proposed to be adapted to d...

The purpose of this study is to examine the relative importance of media coverage and physician advice on the decision of women 40 years and older to obtain a mammogram. Five theoretical models, by which media coverage and physician advice may interact to affect individual health behavior, are presented. These models are tested with time-series regression analysis based on national-level data o...

This report describes surveillance systems used for assessing influenza vaccination coverage among pregnant women in the United States. Coverage estimates and factors associated with maternal vaccination are reviewed for internet panel surveys of pregnant women and the Pregnancy Risk Assessment Monitoring System (PRAMS); new estimates are reported from the Behavioral Risk Factor Surveillance Sy...

We present COVERAGE – a novel database containing copymove forged images and their originals with similar but genuine objects. COVERAGE is designed to highlight and address tamper detection ambiguity of popular methods, caused by self-similarity within natural images. In COVERAGE, forged–original pairs are annotated with (i) the duplicated and forged region masks, and (ii) the tampering factor/...

Coverage rate, a critical variable for gridded forest area, has been neglected by previous studies in estimating the annual gross primary production (GPP) of global forest ecosystems. In this study, we investigated to what extent the coverage rate could impact forest GPP estimates from 1982 to 2011. Here we show that the traditional calculation without considering the coverage rate globally ove...