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Institution

Air Force Technical College, Bangalore

About: Air Force Technical College, Bangalore is a based out in . It is known for research contribution in the topics: Dipole antenna & Corner reflector. The organization has 3 authors who have published 3 publications receiving 11 citations.

Papers
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15 Mar 2013
TL;DR: In this paper, the authors compared high and low achievers in science and mathematics in terms of their spatial ability and Working Memory Capacity (WMC), and to compare male and female learners' performance in both these two cognitive abilities and their science and Mathematics achievements.
Abstract: The purpose of the current study is to compare high and low achievers in science and mathematics in terms of their spatial ability and Working Memory Capacity (WMC), and to compare male and female learners’ performance in both these two cognitive abilities and their science and mathematics achievements. The sample consisted of 102 ninth graders in Oman. To estimate participants’ spatial ability and their WMC, the Water Level Task (WLT) and the Digit Span Backwards Test (DSBT) were used. The results indicated that both science and mathematics high achievers significantly outperformed low achievers in terms of spatial ability and WMC. In addition, females out-performed males in WMC, while males outperformed females in spatial ability. There were no significant differences between the two genders in terms of their achievement in science and mathematics.

7 citations

Journal ArticleDOI
TL;DR: In this article, the propagation of ultrasonic Lamb wave and its interaction with the front edge of a delamination in a cross-ply and unidirectional composite laminates are presented.
Abstract: Numerical and experimental studies carried out on the propagation of ultrasonic Lamb wave and its interaction with the front edge of a delamination in a cross-ply and unidirectional composite laminates are presented in this paper. When the fundamental antisymmetric Lamb mode (Ao) is incident at the leading (front) edge of a delamination, it undergoes reflection and transmission into the sub-laminates. Numerical simulations carried out on the interaction of the Ao mode with the edge of a semi-infinite delamination revealed that during this interaction, So mode is generated and propagate as AoSo (propagation of the So mode due to the incident Ao mode) mode in the top and bottom sub-laminates along with the incident Ao mode, which propagates as AoAo (propagation of the Ao mode due to the incident Ao mode) mode. Transmission factors and power transmission coefficients of AoAo and AoSo modes on an assortment of excitation frequencies — 150 kHz, 175 kHz, 200 kHz and 225 kHz, and thickness ratios were computed. Experimental validation of results arrived through numerical simulations, was also carried out employing air-coupled ultrasonic transducers.

5 citations

DOI
01 Feb 1982
TL;DR: In this article, a 3D corner reflector antenna of arbitrary apex angle was analyzed and the radiation resistance and the directive gain of the antenna were calculated. But the antenna was not considered in this paper.
Abstract: A method of analysing a 3-dimensional corner reflector antenna of arbitrary apex angle is given. Expressions have been obtained for the far field of the 3-dimensional corner reflector fed by a dipole. The radiation resistance and the directive gain of the antenna have been calculated. The method described is applicable even when the feed dipole is arbitrarily oriented. It is found that the radiation along a prescribed direction can be circularly polarised (right or left) by suitably orienting the feed dipole.

Authors

Showing all 3 results

NameH-indexPapersCitations
Ismail A Al-BATTASHI117
Rakesh Kumar Singh114
S.V.K. Shastry010
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20141
20131
19821