Browsing Engineering by Issue Date
Now showing items 21-40 of 335
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Deterministic modeling of 5g millimeter-wave communication in an underground mine tunnel Open Access
(IEEE., 2019)This paper presents broadband simulations and measurements of Millimeter-Waves (mm-wave) propagation in a rugged underground mine environment. Mathematical formulation was carried out in the framework of Uniform Theory of ... -
On the path loss model for 5-GHz microwave-based pinless subsea connectors
(Electromagnetics Academy, 2019)In this work, a simple propagation channel model for microwave-based pinless subsea connectors in the 5 GHz band is presented. Both high electromagnetic attenuation in seawater due to absorption and the near-field working ... -
Multi-band printed antenna for portable wireless communication applications
(Electromagnetics Academy, 2019)A compact, triple-band (WiMAX, WLAN and X-Band uplink satellite communication) monopole antenna is reported in this paper. The geometry of the proposed antenna consists of a pentagon-shaped patch along with symmetrical ... -
Electromagnetic bandgap backed millimeter-wave MIMO antenna for wearable applications
(IEEE., 2019)A millimeter-wave (mm-Wave) multiple input multiple output (MIMO) antenna operating at 24 GHz (ISM band), suitable for wearable applications, is proposed in this paper. The proposed MIMO antenna consists of two elements, ... -
Slot-DRA-based independent dual-band hybrid antenna for wearable biomedical devices
(IEEE., 2019)A hybrid dual-band antenna, consisting of an L-shaped radiating slot and a cylindrical dielectric resonator antenna (CDRA) is proposed, simulated and experimentally validated in this paper. The microstrip transmission line ... -
An intelligent maximum power point solar tracking system
(Institut za Istrazivanja, 2019)This paper accentuates the enhancement of electric energy produced from Photo Voltaic (PV) solar modules as a result of sun tracking. The development of the tracking system is based on finding the orientation of a solar ... -
A compact UWB antenna with independently controllable notch bands
(MDPI AG., 2019)A minimally-sized, triple-notched band ultra-wideband (UWB) antenna, useful for many applications, is designed, analyzed, and experimentally validated in this paper. A modified maple leaf-shaped main radiating element with ... -
Cylindrical dielectric resonator antenna-based sensors for liquid chemical detection
(MDPI AG., 2019)A compact, cylindrical dielectric resonator antenna (CDRA), using radio frequency signals to identify different liquids is proposed in this paper. The proposed CDRA sensor is excited by a rectangular slot through a 3-mm-wide ... -
Low-profile frequency reconfigurable antenna for heterogeneous wireless systems
(MDPI AG., 2019)A low-profile (0.21λg× 0.35λg× 0.02λg ) and a simply-structured frequency-switchable antenna with eight frequency choices is presented in this paper. The radiating structure (monopole) is printed on a 1.6-mm thicker, ... -
Frequency and pattern reconfigurable antenna for emerging wireless communication systems
(MDPI AG., 2019)A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a ... -
Study of bio-materials for removal of the oil spill
(Springer Science and Business Media Deutschland GmbH, 2020)The major battle that the human civilization is facing in the present era is regarding pollution; one of a serious threat among these pollutions is the contamination of water bodies due to oil spills. Oil spills from ships, ... -
Radiative mixed convection flow of Maxwell nanofluid over a stretching cylinder with joule heating and heat source/sink effects
(Nature Research, 2020)This work analyses thermal effect for a mixed convection flow of Maxwell nanofluid spinning motion produced by rotating and bidirectional stretching cylinder. Impacts of Joule heating and internal heat source/sink are also ... -
Numerical investigation for rotating flow of MHD hybrid nanofluid with thermal radiation over a stretching sheet
(Nature Research, 2020)This research investigates the heat and mass transfer in 3-D MHD radiative flow of water based hybrid nanofluid over an extending sheet by employing the strength of numerical computing based Lobatto IIIA method. Nanoparticles ... -
Exergy analysis of day light using fuzzy logic controllers of Jordanian commercial buildings
(Institute of Advanced Engineering and Science, 2020)Saving energy and greenhouse gas emissions in commercial buildings become a very serious request of buildings’ designers and engineering crew. The goal behind the current research is to high light and demonstrate the outcome ... -
Existence theory and semi-analytical study of non-linear Volterra fractional integro-differential equations
(Elsevier B.V., 2020)In this article, we investigate the semi-analytic solutions of non-linear Volterra fractional integro-differential equations by using Laplace Adomian decomposition method. We discuss the method in general and provide ... -
Existence of fractional order semi analytical results for enzyme kinetics model
(Springer, 2020)This research work investigates the existence of semianalytical solutions of a chemical kinematics model. We develop the conditions for the existence of the solutions for a proposed enzyme kinetics model, via tools of the ... -
Qualitative analysis of nonlinear coupled pantograph differential equations of fractional order with integral boundary conditions
(Springer, 2020)In this research article, we develop a qualitative analysis to a class of nonlinear coupled system of fractional delay differential equations (FDDEs). Under the integral boundary conditions, existence and uniqueness for ... -
Predicting the contribution of recycled aggregate concrete to the shear capacity of beams without transverse reinforcement using artificial neural networks
(Elsevier Ltd, 2020)Although many researchers have studied the shear and flexural behavior of recycled aggregate concrete (RAC) beams, code provisions have not been modified yet to take RAC into account. Therefore, the slow development of ... -
Hybrid CFRP-steel for enhancing the flexural behavior of reinforced concrete beams
(King Saud University, 2020)Hybrid use of Carbon fiber reinforced polymer (CFRP) composites with conventional construction materials offers an ample opportunity to develop economical and high-performance structures. However, anchoring and debonding ... -
Innovative model for accurate prediction of the transfer length of prestressing strands based on artificial neural networks: Case study
(Elsevier Ltd., 2020)This study provides a case study showing the effectiveness of utilizing Artificial Neural Networks (ANNs) in prestressed concrete. The effectiveness of prestressing is crucially linked to the transfer length (TL) of the ...