Light Emitting Diode (LED) applications are increasingly used in various microelectronic devices due to their efficient light generation. The miniaturisation of the LED and its integration into compact within weight limit have resulted excessive heat generation, inefficient management this could lead failure entire system. Passive and/or active sinks for dissipating from system environment improve performance. An ANSYS design modeller transient thermal conditions were utilised study simulate...

In recent years, we have witnessed a paradigm shift in mobile operator deployment from Long Term Evolution Advanced (LTE-A) to fifth generation (5G) networks. With the completion of 3GPP Release 15 standards supporting "Non-Standalone 5G" late 2018, attention has shifted Standalone 5G, whilst operators across globe continue accelerate 5G based on latest specifications. This paper addresses global trends and challenges for early rollout with focus Nigeria market. It also provides solutions...

Abstract Conventionally, diplexers are designed by connecting two filters of different frequencies using a transmission T‐line junction which acts as distribution network serving the individual filters. Here, novel diplexer has been proposed and to utilize directly coupled resonator network. The is square open‐loop resonators same resonant frequency 1.95 GHz. Coupling achieved λ/4 line couple them. This process made pair possess dual‐mode function, resonating at 1.85 2.05 Two bandpass then...

A new approach to the implementation of Fredholm integral method (FIM) was developed evaluate scattering by irregular dielectric particles. In this paper, particles are modeled discretizing their volume with cells according weighted contents. The FIM presented in paper represents a departure from earlier work where numerical integration is no longer based on expansion set polynomials but direct spatial integration. This which still involves contour uses quandrantal combination conditioning...

From the clients' side, future generations of railway passenger services should deliver on-board data rate that exceed customer expectations. infrastructure perspective safety, security, maintenance and crime prevention must be enhanced in line with reduced journey times even on international services. At present, gross information capacity intra-train guided media at 100s Mbit/s is already inadequate ( Kbit/s per user) as roll-out 5G technologies continues apace. This paper presents a new...

The migration of professional audio systems towards Ethernet-based networking allows optimisation software to maximise key performance indicators (KPIs) such as the power required for particular applications.In this study, we focus on minimising peak requirements by use supercapacitors (SCs) demand smoothing with Class D amplification at least 600 W root mean square (rms) output.Depending content, a maximum r.m.s output music programme is shown draw just 60 (10% rms) average.Our studies used...

The next generation of railway customer-oriented services are expected to generate a large volume data ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\approx$</tex-math></inline-formula> 10s TB). As result, passengers' applications, safety, security, and Internet-on-Board (IoB) sensors challenge current Train Communication Networks. With the present Ethernet Backbone (ETB) specification just 100 Mbit/s...

Summary form only given: A volume integral equation known as Fredholm Integral Equation (FIE) approach for solving plane electromagnetic (EM) waves scattering by small dielectric particles is presented. In this paper we adapted FIE method published in previous work (A.R. Holt, N.K. Uzunoglu and B.G. Evans, IEEE Trans., 26, 706-712, 1978) to solve of EM homogeneous ellipsoidal scatterers. contrast work, the basis numerical integration are not represented an expansion a set polynomials...

The challenges involved in the application of fuzzy logic wireless sensors networks often stem from limitation processing and storage capabilities nodes. This anomaly can be overcome by using a centralized data sink, equipped with more which also serve as decider on occurrence or otherwise event interest based selected readings subset deployed It is known that selecting finite universal set intractable especially relatively large size problem space. In this paper, we propose T-norm Fuzzy...

Over the years, effective transmission of radio signals on trains and moving vehicles alike has been difficult owing to non-line-of-sight (NLOS) communications. This work is centered use passive reflectors employing different obstacles improve for study NLOS communications in 60 GHz mmWave indoor scenarios. In this study, we compute gain achieved link using two commercial-off-the-shelf (COTS) antennas by way analytical beam tracing end-to-end transmissions. particular, demonstrated a...

This paper proposed a system to survey candidate popularity for governor of Jakarta in 2017 from Twitter, Facebook, Instagram, YouTube, and Google Trends.While traditional surveys take days or weeks complete, the demonstrated results instantly continuously.This aims measure gubernatorial candidates through volume tweets, number Facebook posts, Instagram hashtags, videos on Trends.There are four who studied popularity, Basuki Tjahaya Purnama, Yusril Iza Mahendra, Sandiaga Uno, Adhyaksa...