Spiral antennas are commonly used in communication systems due to their compact size, wide bandwidth and circularly-polarized radiation. This paper shows the design, simulation and analysis of two different types of spiral antenna; the Archimedean and Equiangular spiral. The spirals were designed to be working in the frequency range of 1–4 GHz us

Quadrotors have been applied to collect information for traffic, weather monitoring, surveillance and aerial photography. In order to accomplish their mission, quadrotors have to follow specific trajectories. This paper presents proportional–integral–derivative (PID) cascade control of a quadrotor for path tracking problem when velocity and acc

PERKEMBANGAN teknologi terlalu pantas. Teknologi berubah dan mencabar kebanyakan status quo. Tempoh kepantasan perubahannya juga semakin pendek. Sejarah revolusi industri abad ke-17, 18 dan 19 mengambil lebih 100 tahun. Teknologi transistor mengambil puluhan tahun, namun Internet telah mengubah pelbagai aspek kehidupan dalam masa kurang 10 tahun!.

The performance of parabolic trough solar collector (PTSC) has been evaluated using different heat transfer working fluids; namely water and SAE20 W50 engine oil. New and slightly improved PTSC was developed to run the experimental study. Under the meteorological conditions of Malaysia, authors found that PTSC can operate at a higher temperature th

Highlights: To enhance language learning, research has shown that language instruction with computer technology was more effective than instruction without it (Grgurovic, Chapelle & Shelly, 2011). Grgurovic et al. further elaborated that Computer-aided Language Learning (CALL) specialists “aim to create ideal language learning conditions thro

The data storage capacity is directly proportional to the number of bits on board of the tag. The main challenge in UWB tag development is to maintain higher number of bits while keeping the tag within the standard size. Higher number of bits also ensures more security and anti-tempering protection of the tagging. In addition, reducing the dimensio

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The study seeks to examine the level of job satisfaction among academic staff of Bauchi State University Gadau (BASUG), Nigeria. This Study uses motivator and hygiene factors as independent variables, whereas job satisfaction/motivation as a dependent variable is based on the theoretical framework of ‘two factor theory’ of Fredrick Herzberg (19

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Dental bio-aerosols are defined as airborne particles of liquid that contain living microorganisms or have been released from living organisms, which are generated during many dental procedures. Dental bio-aerosol has the potential for the airborne spread of disease since air contained within the office is breathed by dental health care workers. Ae