A METHOD OF MEASUREMENT PRECISION AND INDEX VALIDITY IMPROVEMENT FOR AN OPTOELECTRONIC CONVERTER OF MICROMETEOROIDS MOTION PARAMETERS

The paper presents a practically implemented version of the placement of posts for the complex of external measurements on the basis of mobile radar centimeter range stations, built on the technology of cascaded active phased waveguide‑slot antenna arrays for recording the parameters of the aircraft measuring point as a typical air moving object. The main technical characteristics of the posts for the complex of external measurements and registration of the parameters of motion parameters of air objects are proposed, the restrictions on the range of measurement and review sectors are determined. The influence of environment on the propagation conditions of radio waves, limiting the choice of the frequency range of radar stations, the results of the calculation of linear attenuation in oxygen, water vapor and the total attenuation for the wave range from 10 to 100 GHz are presented. The theoretical issues of designing radar stations sector review with the use of electronic scanning and rangefinder‑goniometer method of measurement are raised.

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Using the Rating Scale Model to Examine the Psychometric Properties of the Self-Efficacy Scale for Driver Competence

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000063 ◽

2011 ◽

Vol 27 (3) ◽

pp. 164-170 ◽

Cited By ~ 1

Author(s):

Anna Sundström

Keyword(s):

Psychometric Properties ◽

Self Efficacy ◽

Rating Scale ◽

Measurement Precision ◽

The Self ◽

Test Theory ◽

Self Report ◽

Scale Model ◽

Validity And Reliability ◽

Two Samples

This study evaluated the psychometric properties of a self-report scale for assessing perceived driver competence, labeled the Self-Efficacy Scale for Driver Competence (SSDC), using item response theory analyses. Two samples of Swedish driving-license examinees (n = 795; n = 714) completed two versions of the SSDC that were parallel in content. Prior work, using classical test theory analyses, has provided support for the validity and reliability of scores from the SSDC. This study investigated the measurement precision, item hierarchy, and differential functioning for males and females of the items in the SSDC as well as how the rating scale functions. The results confirmed the previous findings; that the SSDC demonstrates sound psychometric properties. In addition, the findings showed that measurement precision could be increased by adding items that tap higher self-efficacy levels. Moreover, the rating scale can be improved by reducing the number of categories or by providing each category with a label.

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