This paper presents the performance evaluations of the multicarrier modulation systems such as the Filter Bank Multicarrier (FBMC), the Filtered Orthogonal Frequency Division Modulation (F-OFDM) and the Universal Filtered Multicarrier (UFMC). The performance evaluation of these new waveform candidates for 5G mobile communications has been performed based on Power Spectral Density (PSD) and Peak to Average Power Ratio (PAPR) using MATLAB Version 2019. Simulation results show that, compared to the Frequency Division Modulation (OFDM), FBMC could be a more effective solution.

Keywords - 5G, FBMC, Multicarrier, F-OFDM, OFDM, UFMC

The Transportable Radio Frequency Monitoring System (RFMS) is a radio frequency or surveillance system installed at 64 well-known SMFR stations in the territory of Indonesia, which have pioneering airports and are controlled by 24 Technical Implementing Units (UPT) of the Ministry of Communication and Informatics. In this implementation, research was carried out to create a real time monitoring system for currents, voltages and power through a remote monitoring system. Therefore, the efforts made for this problem designed a monitoring system that can be accessed from the battery used to see the current, voltage and power parameters measured on the system with the sensor installed and transmit the data using internet communication media and the Blynk application as a display information so that battery.......

Keywords - Internet Of Things (IoT), Monitoring, Transportable

Numerical solutions to various types of plate structures are indispensible in engineering since it provides approximate solutions to mathematically expressed equation governing a plate. On the other hand, analytical solution provides exact solution to plate bending problems but has restrictions in areas of practical interest. In this study, an improved finite difference method (IFDM) which is a numerical method was used to transform the governing differential equation of a rectangular stiff plate on elastic foundation into improved finite difference coefficients using the central difference method on the discretized plate on elastic foundation. The coefficients obtained from the numerical method were applied into the governing differential equation of the rectangular stiff plate on elastic foundation to obtain the mathematical model for deflection of the plate. Thereafter, 25 interior nodal points of the plate were considered.......

Keywords - Numerical Solution; Rectangular Stiff Plate; Elastic Foundation; Subgrade Reaction; Central Deflection; Improved finite difference method; mathematical model; boundary condition.

The article analyzes the branding theory and the university brand advertising interactive media. Based on theory and application of methods of analysis, survey, synthesis, the article assesses the current situation of applying interactive media to promote the brand name of Ha Tinh University in the past time, from then on solutions to apply interactive media to promote the brand name of Ha Tinh University in the coming time.

Keywords - Brands, interactive media, Ha Tinh University, solutions.

With the spread of Covid 19 related information, so many conspiracy theories have resulted where most of these are widely circulated on social media. WhatsApp Messenger is one of the social networking sites where people depend on for information as this medium of communication is easy to acquire, to operate and that the internet bundles required to use the platform are quite affordable to many. It has been noticed that WhatsApp as an alternative channel that is interactive, inclusive and in multimedia form poses a threat to the right of citizens to be informed truthfully and accurately about the Covid 19 deadly pandemic. The WhatsApp platform has been heavily cited as a source of half-truths or totally misleading details about the cure and prevention of Covid 19. It is against this backdrop that this study sought to assess how the WhatsApp.......

Keywords - Covid 19, Social Media, WhatsApp Messenger, Uses and Abuses.

Gas lift is considered the most important artificial method in the oil and gas industry. Although, there are several components in the Gas Lift Valve (GLV), the ball and the seats are the only two adjustable components. The objective of this study is to maximize the gas flow rate (throughput) using different seat designs, seat sizes, and ball sizes to increase oil production. Blowdown test has been conducted using actual valve and nitrogen gas at 600 psi injection pressure. In total, five main seat designs were experimentally tested to investigate the highest gas throughput. The first three seat designs (sharp edge, modified design, and optimized design) have previously been evaluated using low gas injection pressure. Developing on this study, these seat-deigns have now been tested using 600 psi injection pressure. Additionally, two new seat designs were invented in this research including partially curved design (PCD) and wholly curved design (WCD). To optimize the gas throughput, thirty-four seat sizes and five ball sizes were used........

Keywords - Artificial Gas Lift, Gas Lift Valve, Ball Configuration, Seat Size, Gas Throughput.

This quantitative study was carried out to estimate the oil initial in place (OIIP) of the Safsaf D oil reservoir using both volumetric methods and a material balance equation. The study also assessed the oil reserves of this field using production Decline Curve Analysis (DCA) method. Oil initial in place was first estimated using three volumetric methods (Iso-pach method, Pore-volume method and Hydrocarbon pore volume method); furthermore, as these methods rely on mapping, Surfer software was implemented in this study to generate maps. Also, the modified material balance equation of the Havelena and Odeh model was used to estimate the oil initial in place. Field production history, reservoir pressure data, and PVT data were collected for material balance calculations. Finally, field reserves and remaining production life were estimated using exponential decline curve analysis method........

Keywords - Safsaf D reservoir; volumetric method; material balance equation; decline curve analysis; oil initial in place; reserves.

In object detection, the most difficult interference is similar interference. The interference is relatively similar to the characteristics of the target object. When the interference feature extraction is less difficult than the target object, the use of the interference feature can better identify the target object. Therefore, a twin strategy, which uses interference with low detection difficulty, is proposed to provide the target object a non-single detection scale. Therefore, the interference and target objects are labeled at the same time, and the single classification problem is transformed into the multiclassification problem of detecting interference and target objects. Thus, interference is detected initially and does not interfere with the target object detection. Then, the EfficientDet model structure based on the twin strategy is proposed to study the object detection algorithm under similar interference. Finally, an experimental study is carried out. Experimental results show that the detection accuracy of the target object can be improved by more than 4%.

Keywords - Object detection, EfficientDet, Similar interference

Separation of lactic acid (LA) from fermented beetroot biomass was done as an effort to get permeate used as natural oxidation prevention and retentate. Separating was done by 0.15 μm microfiltration (MF) membrane equipped in plate-and-frame type cross-flow microfiltration (CFMF) membrane module and operated at room temperature, cross flow rate ~7.5 L/min and transmembrane pressure (TMP) 2 and 6 bar for 0, 5, 15, 25 and 35 minutes. The result of work showed that CFMF was able to separate the wanted component. Based on lactic acid recovery and process efficiency, optimization of process was obtained at room temperature, cross flow rate ~7.5 L/min and TMP 2 bar for 35 minutes and gave permeate flux of 8.05 L/m2.h. with lactic acid 1.10%, total solids 3.41%, pH 3.12, and antioxidant activity 47.62%, meanwhile retentate.......

Keywords - cross-flow microfiltration, beetroot (Beta vulgaris L.), flux, lactic acid, inhibition.

The world-wide demand for solar electric power or photovoltaic solar energy has grown steadily over the last two decades. Therefore, the need for a reliable and low cost electric power is the primary force driving the worldwide photovoltaic (PV) industry today. Recently, Libyan energy mix consists of local resources, such as natural gas at 38%, heavy fuel oil at 20% and light fuel oil at 42% but there is no contribution from renewable energy sources in the national energy. In this work, an experimental investigation on the possibility of using solar energy as an alternative source for the traditional source of electricity for lighting columns in Benghazi city through solar panels will be introduced. The study has objectives........

Keywords - Energy, Photovoltaic, and Solar lighting.

Shelter is man's basic need after food and clothing. However, due to economic challenges and high cost of building materials such as cement, it became difficult for people to acquire affordable shelter in Nigeria. This led to research into finding ways of utilizing waste to serve as alternative to earth blocks stabilized with cement for low cost housing. Thus, this research study examined the performance evaluation of Compressed Earth Blocks (CEB) stabilized with rice husk ash (RHA) and mining tailing waste (MTW). In order to achieve this objective, geotechnical properties and compaction characteristic tests of lateritic soil used in the production of the blocks were determined. The blocks were produced with RHA and MTW as stabilizers at 0%, 2%, 6%, 8% and 10% by weight of laterite and cured for 14, 21 and 28 days respectively. The compressive strength, density and water absorption tests of the blocks were conducted after each curing regime........

Keywords - CSEB, rice husk ash, mining tailing waste, compressive strength.

Designing energy harvesting system that are pollution free has become a significant goal within the research community. One of the numerous systems that have been proposed is the VWEHS system that produces electrical power by utilizing the movements of commuting vehicles through tunnels, boulevards, and streets. When vehicles pass over a VWEHS system, the system translates vertically. Consequently, a kinetic energy is produced and transferred into electrical power. In this paper, a prototype version of a Vehicle wheel Energy harvesting system, which aims to harvest energy from moving vehicles by using their kinetic energy, is designed, constructed, and tested. A computer software, Matlab was used to design the system device circuit. An experimental analysis is performed on the rack-and-pinion system. Results have shown that electrical power up to about 55 W generated when a mass of 80 kg is applied to the VWEHS system considered. Extrapolation of results confirms around 0.56 kW powers can be produced when various vehicles with different masses pass through the ramps.

Keywords - Speed ramps, energy harvesting system, electricity, kinetic energy, voltage, current, power.

The exact solution of three nonlinear partial differential equations viz: Burgers-Fisher, Burgers-Huxley and modified Korteweg-de Vries equations are investigated theoretically using the first integral method. The equations were first converted to ordinary differential equation using the FIM routine and the resulting ODE was further transformed into a system of equations using new independent variable. With the aid of the Hilbert-Nullstellensatz theorem, the resulting system is solved for first integral solution to the ordinary differential equation.

Keywords - Burgers-Fisher, Burgers-Huxley, Modified Korteweg-de Vries, Division theorem, Hilbert-Nullstellensatz

A novel pulsed power generator based on IGBT stacks is proposed for wide pulsed power applications because it can generate high voltage pulsed output without any step-up transformer or pulse forming network, it has advantages of fast rising time, easiness of pulse width variation, high repetition rate and rectangular pulse shapes. Proposed scheme consists of multiple power stages which were charged parallel from series resonant power inverter. Relying on the number of power stages it can boost maximum voltage up to 60 kV or higher with no limits of power stages. To minimize component for gate power supply, a simple and robust gate drive circuit which delivers gate power and gate signal simultaneously by way of one high voltage cable is proposed. For gating signal and power a full bridge inverter and pulse transformer generates on-off signals of IGBT gating with gate power simultaneously and it has very good characteristics of protection of IGBT switches over arcing condition. It can be used for various kinds of pulse power application such as plasma source ion implantation, sterilization, water and gas treatment which needs few kHz pulse repetition rate with few to ten of microseconds pulse width.

Keywords - Power System Protection, Drive Circuit, Pulse Techniques, Time Current Characteristics and Pulse Power Supply.

High efficiency video coding (HEVC) is a very popular coding standard since it can support up to 4k or 8k high resolution video. Face location is one of the most important tasks for intelligent video surveillance (IVS) system based on HEVC. It is a fact that an accurate face location facilitates subsequent face recognition and security system. Recently, the YOLO (you only look ones) is a very effective object location method, but it works with low resolution images. Since the modified version of YOLO (YOLOv2) location system limits the resolution of input image up to square ratio of 608×608 pixels, the input image needs to be resized to a fixed size. This will lead to a large reduction in the accuracy of face location for HEVC........

Keywords - Face location, HEVC, YOLO, convolutional neural network.

This paper proposed a method for operational planning of Mesh/ radial distribution network considering security-constraints and multi-DG configuration with integration of demand response. The proposed method simultaneously minimises operational cost and energy losses in the network. The impact of multi-configuration of renewable DGs and demand response in a meshed network were also investigated. The ε-constraint method was used for the solution of multi-objective function. In this work, the distribution network is converted from radial to mesh to allow for alternative route for flow of electric power when N-1 distribution line contingency occurs in any of the branches...........

Keywords - Distribution network, Multi-objective, Demand response, Power flow, multi-DG, SCOPF

Modern smartphones are equipped with many useful sensors. These sensors range from gyroscopes to global position systems (GPS) and sensors like magnetometers and three-dimensional accelerometers in-between. These sensors being used by applications installed in the phones can be used to measure the level of serviceability of a road by measuring the international roughness index (IRI). Early researchers have established that the World Bank standard of IRI was the method used in assessing road conditions. It serves as a means of evaluating the conditions and level of serviceability of a road network. This paper evaluates the roughness, surveyed length and vehicle speed measurement using RoadLab Pro (open sourced) and Roadroid (commercial) applications along selected routes. The selected route was carried on four major road networking the Federal Capital Territory (FCT) to neigbouring state capitals........

Keywords - Smartphones, International Roughness Index, road asset management system, RoadLab Pro, Roadroid.

A Power distribution as well as any bulk energy consuming companies have a strong demand for reliable power so far as revenue generation and production are concerned. Research will proof that transformers are great assets to companies and therefore maintenance as well as replacement of the transformer is found to be a luxurious exercise for every company. Keeping this factor in mind, IoT based distribution transformer health condition monitoring system is developed in this work to monitor the health conditions of distribution transformers remotely and at regular intervals. Health index is determined on the basis of change in current values on phases, oil level moisture content as well as load ability, which are measured using sensors. Arduino has been selected as the processor for transmitting the sensed data while Blynk App has been selected as the IoT platform for displaying the received data. This low-cost system can be installed in transformer at any location to get monitored remotely, which not only determines health condition but also to assist in predicting the life span as well.

Keywords - transformer, monitoring, IoT, microcontroller, sensors, transmission, data

The airborne magnetic data of Chad Basin areas have been interpreted qualitatively and quantitatively using source parameter imaging techniques. Six aeromagnetic data sheets covering an area bounded by latitudes 12 00' to 13 00' North and longitudes 12 30' to 14 00' East were used as basic data for determining the nature of the magnetic anomalies over the area. Regional anomaly was removed from the total magnetic intensity field to obtain the residual anomaly field using polynomial fitting method. The total magnetic intensity and residual intensity fields show range of magnetic anomalies which strongly revealed that the study area is magnetically heterogeneous. The horizontal derivatives maps show the occurrence of subsurface linear structures which suggests a significant presence of faults in the study area. Source Parameter Imaging (SPI) technique was employed in quantitative interpretation with the aim of determining depth/thickness of the sedimentary basin. The results from SPI estimated depth ranges from 345.0 m (shallow magnetic bodies) to 6880.6 m (deep lying magnetic bodies). The sedimentary thickness obtained in this work indicates the possibility of hydrocarbon accumulation in the study area...

Keywords - Source parameter imaging, aeromagnetic data, Chad basin, Derivatives, Magnetic anomaly, Basement.