bluuebunny/crossref_metadata_2025_split huggingface dataset:
Partial Discharge Characteristics for On-Site Measurement based on Rise Time Waveform
Authors: Abdullah A Z , Isa M , Amlus M H , Azizan N , Bakar M F , Meor A.Z 
Published: June 2021

Abstract
This paper describes partial discharge (PD) characteristics for on-site measurement based on rise time waveform. The implications of this kind of PD characteristics is becoming increasingly important as with rapid development of detection PD signal in medium voltage. The rise times characteristics used in insulation condition monitoring to keep getting earlier information about insulation condition of the high voltage or medium voltage equipment. Currently, there is minimal research working on the characteristic especially rise time and due to this, it need to further develop comprehensive characteristics PD detection at such extreme conditions. An on-site PD measurement using Rogowski coil (RC) and MATLAB analysis focusing on rise times is presented here. Measurement was setup based on IEC60270 standard and the circuit in the standard is followed. Insulation used in this work is XLPE type under 11 kV voltage stress and there were eight location was perform in order to get clear picture of the pattern. Overall result indicates that, the rise times ranges is between 1.5 and 5 ns. The impact of rise time characteristics on the PD signal based on real measurement is huge since maintenance unit can performed measurement in short time compare to previous method. Specifically, the total number of PDs measurement and severity range are shown with cable length. The rise time pattern are always provide different value depend on level severity and frequency. However, when combining result rise time from 8 substation measured, it provide a significant result.
Realization of Strong CMOS Conforming Full Adder Circuit Using Symmetric Function Lattice Structure
Authors: Mustapha Muhazam , Rosdi Bakhtiar Affendi , Mohamad Tengku Norliza Tengku , Mokhtar Anis Shahida Niza 
Published: June 2021

Abstract
Due to the physical limit that the IC industry may face in the future that transistors size may not be able to shrink anymore,a lot of work had been done to minimize the number of transistors used, instead of shrinking them. One of the highly researched standard circuit to reduce transistor count is the full adder as it appears in almost all computing circuits. In this paper, an alternative to CMOS technology using symmetric Boolean function lattice structure is presented to produce full adder. Symmetric functions are the functions that are invariant under input permutation. Theyhaveaspecialwayofrealizationthat offerssomepossibility to reducethe number oftransistors used. Full adder falls into this classof functions. It has been found that the right full adder lattice structure based circuit only requires 22 transistors to produce the correct function for the sum and c out
output. This is a saving of 6 transistors as compared to the standard 28-transistor CMOS full adder. The output delay is around 3.0 ns for the c out
output, and around 4.5 ns for the sum output.
Finger Vein Biometric Identification Using Discretization Method
Authors: Yahaya Y H , Leng W Y , Shamsuddin S M 
Published: June 2021

Abstract
Over the past years, finger vein identification has gaining increasing attention in biometrics. It has many advantages as compared to other biometrics such as living-body identification, difficult to counterfeit because it resides underneath the finger skin and noninvasiveness. Finger vein feature extraction plays an important role in finger vein identification. The performance of finger vein identification is highly depending on the meaningful extracted features from feature extraction process. However, most of the works focus on how to extract the individual features and not presenting the individual characteristic of finger vein patterns with systematic representation. This paper proposed an improved scheme of finger vein feature extraction method by adopting discretization method. The extracted features will be represented systematically way in order to make classification task easier and increase the identification accuracy rate. The experimental result shows that the accuracy rate of identification of the proposed framework using Discretization is above 98.0%.
Design and Performance Analysis of Grid Connected Photovoltaic (GCPV) based DSTATCOM for Power Quality Improvements
Authors: Baharudin N H , Ridzwan M A H , Mansur T M N T , Ali R , Ananda-Rao K , Che Mid E , Suboh S M , Abdullah A M 
Published: June 2021

Abstract
Solar energy has become the most prominent renewable energy for electrical power generation of the sustainable development agenda. This project focuses on power quality improvement in the low voltage distribution network by using a three-phase three-wire Distributed Static compensator (DSTATCOM) supplied by a single-stage grid-connected solar photovoltaic (GCPV) system. The instantaneous reactive power theory (IRPT) or P-Q theory will be used as the control algorithm of the PV based DSTATCOM to eliminate the harmonic current caused by the non-linear loads in the distribution system. This control method has great impact on the accuracy of the harmonic current and reactive power compensation for harmonic current elimination according to the requirement of THD limit set by IEEE 519-2014. Sizing of the grid-connected solar PV system based DSTATCOM will be presented and capable to deliver the active power demand to the utility grid under variation of solar irradiances. This system is modelled and simulated in the MATLAB/Simulink environment.
Electronic Hydroponics: Insights and the Case Study of Oman
Authors: Aljabri Mazoon , Alobaidi Maryam , El-Saleh Ayman A. 
Published: June 2021

Abstract
The Ministry of Agriculture and Fisheries in Oman is taking care of a major role in the field of agriculture by rationalizing the use of water for irrigation, and it has also adopted new initiatives dedicated to the field of agriculture which will enhance crops productivity. Greenhouse systems are considered to be among the technologies that are currently considered, where the vegetables grown such systems have excellent characteristics, thus enhanced productivity becomes vital. In principle, it is possible to grow plants in any season by controlling the plantation environment. In this paper, the concepts of soilless farming equipped with an electronically assisted platforms are investigated with a specific focus in Oman’s context. The soilless farming is also referred to as water farming or hydroponics. This technique is crucially important to the Sultanate of Oman as it optimizes the consumption of water that might be wasted due to evaporation or leakage into the soil. The water used by the electronic hydroponic systems can be recirculated in a closed-loop scenario. This paper also touches on relevant research directions of advanced technologies on the area of electronic hydroponic systems.
Post COVID-19 implementation of a bidirectional counter with reduced complexity for people counting application
Authors: Rahman A S F , Yaakob S B , Razak A R A , Ramlee R A 
Published: June 2021

Abstract
This paper presents a system for counting people through infrared detection. The system tallies the count and update based on people moving in/out through the supervised area/premise. The counter requires two steps: detection coming in and leaving the area. Obstacle detection from infrared sensor updates the counters and the current value will be displayed in a thin-film-transistor module. With minimal hardware configuration, the developed system is robust and easier to install.
Light Intensity Measurement of Kerr Effect Using Photodiode and High Speed Camera in Propylene Carbonate Under Applied DC Electric Fields
Authors: Zakaria Z N , Lewin P L , Andritsch T 
Published: June 2021

Abstract
Light intensity is a resultant of Kerr effect measurement which later can be translated to electric field as well as charge density distributions in dielectric liquid. The light intensity can be measured either with photodiode or camera but measurement with both detectors has not been done yet. This study focuses on the comparison of light intensity measurement using Kerr effect with simultaneous detectors of photodiode and high speed camera. Hence, a pair of parallel electrodes is used in the experiment under high DC electric field. Propylene carbonate is used as the test liquid with Kerr constant, B of 1.41x10−12 mV−2. From the measurement results obtained, the light intensities from both detectors were compared and showed significant results as compared to the predicted light intensity ratio.
Optimal Design of Solar Photovoltaic Power System with Battery Storage for Sustainable Campus Buildings
Authors: Al-Qahdan A S S , Mansur T M N T , Baharudin N H , Ali R , Abdullah A M 
Published: June 2021

Abstract
The increasing energy demand and the development of renewable energy technology has been the catalyst for utilization of energy from renewable resources. Harvesting solar energy especially through photovoltaic technology is the most attractive and favoured in Malaysia. The aim of this study is to optimally design a solar PV system with battery storage for university building and evaluate the technical performance of the proposed system by using PVsyst simulation. Three buildings from Faculty of Electronic Engineering Technology, University Malaysia Perlis have been chosen as case study. The methodologies include data gathering for load profile and meteorological data such as solar irradiation and temperature, sizing of system’s components and lastly using PVsyst simulation to evaluate technical performance of the proposed system. The result shows the system could produce 168,989 kWh of energy to the load which is technically suitable for the site due to the high specific yield production and the performance ratio in addition to high solar fraction. In addition, the system could save RM 61,801 annually from electricity bill while from sustainability aspect, 117 tons of CO2 could be avoided by using renewable energy annually.
Approximation of Dielectric Properties using Linear Regression Model in Microwave Tomography
Authors: Mohamed L. , Kuwahara Y. 
Published: June 2021

Abstract
The Finite Difference Time Domain (FDTD) is the most commonly used method of numerical simulation to model the electromagnetic waves propagation in biological tissue. An MRI-derived FDTD breast model has been developed and characterized to its corresponding dielectric properties. The relative permittivity and conductivity are correlated using least-square fitting criteria to obtain a linear regression model, which provides the approximation of dielectric properties. This technique reduces the number of unknowns to be reconstructed to one parameter in the analysis region, hence decrease the complexity and computational cost of the microwave imaging problem, without sacrificing the imaging resolution.
Review of Partial Discharge Signal Processing and Monitoring System using Virtual Instrument Software
Authors: Nazifah Abdullah A. , Isa M. , Ismail B. , Abdullah A. Z. , Rohani M. N. K. H. 
Published: June 2021

Abstract
Most of Partial Discharge (PD) processing systems have been developed using virtual instrument to analyse raw measured PD signal. However, some of researchers had neglected the denoising or recognition technique and only focussed on PD location estimation and vice versa This paper reviews an overview of denoising recognition techniques, denoising analysis, PD sensors, location methods and type of virtual instruments in published PD signal processing signal system. A perfect PD analysis system is more beneficial if both PD denoising and locating are applied in the system. Based on this review, the new design of PD signal processing system based on DWT denoising technique and RC sensor using LabVIEW Software for underground power cable using SCTM as PD location algorithm is proposed.
Compact Koch Fractal Dipole RFID Antenna
Authors: Hussin Eryana , Kee Joel , Sahar Norsuzlin Mohd 
Published: June 2021

Abstract
In this paper, the design of Koch Fractal dipole antenna for first, second and third iteration have been presented. The third iteration of Koch Fractal Dipole Antenna shows a total size reduction of 21.25% compared to the basic dipole antenna optimized at the same frequency of 0.92 GHz. The new antenna is proposed based on the structure of the third iterated Koch fractal is designed using Rogers RO3010 substrate with thickness on 1.27 mm. The proposed antenna shows improvement of return loss to -34.57 dB, gain of 1.92 dB, 99% efficiency. The proposed antenna had reduced 17% of length compared to the basic dipole antenna.
Ensemble Learner for Covid-19 from Lung X-Ray Images
Authors: Yacob Yasmin binti Mohd , Raof Rafikha Aliana A , Kan Phak Len Eh , Ahmad Norsuhaida , Ismail Sabarina 
Published: June 2021

AbstractDespite Reverse Transcription-Polymerase Chain Reaction (RT-PCR) is the gold standard of Covid-19 detection, some underdeveloped countries are lacking financially and suffer underdeveloped health system to perform fast Covid-19 detection. Both RT-PCR and Computed Tomography (CT) scan are costly diagnosis tool, thus computed diagnostic chest x-ray (CXR) is seen as fast and affordable option to perform Covid-19 diagnosis for underdeveloped countries. Despite of other works suggest to perform Local binary Pattern (LBP) and recent feature extraction methods such as Local Phase Quantization (LPQ), this works employed Gray-Level Co-Occurrence Matrix (GLCM) because it is a powerful method to extract textured features from gray-level images of chest x-ray. The learner to classify Covid-19 detection is tested via non tree-based learner such as k-Nearest Neighbour (kNN). This work also compared the performance especially in the tree-based and voting approach classifier. The experimentation shows that tree-based which uses voting and ensemble approach to detect Covid-19 from CXR images is a possible candidate learner to be improved for the underdeveloped countries.
Method to Improve the Roll-Off and Stopband Response in Low Pass Filter Using Patch Resonators for Modern Wireless Communication
Authors: Hashim Nur Baya Mohd , Razalli Mohammad Shahrazel , Firuz Wan Nur Suryani , Zakaria Hasneezaliza , Zain Aini Syuhada Md 
Published: June 2021

Abstract
In this paper, several types of patch resonators design procedure are proposed and analysed to improve the roll-off and stopband response in low pass filter. The proposed patch resonators consist of T-shaped patch resonator (TS-PR) that provides instant sharp roll-off and also dual folded T-shaped resonator (DFTS-PR) that improves the roll-off of the previous TS-PR. The transmission zeros of the resonators can be adjusted by varying length and width of high and low impedance microstrip lines. It has been shown that the final design of the patch resonators provides sharp roll-off and acceptable stopband bandwidth by adopting both TS-PR and DFTS-PR. The proposed low pass filter with 3-dB cut-off frequency (fc
) of 5.26 GHz exhibits excellent roll-off rate of 82.2 dB/GHz from 5.5 GHz to 11.7 GHz. Moreover, the transition of the proposed filter is 0.45 GHz which contributes to a sharper transition band from passband to stopband.
Monitoring System for Physical Water Quality Parameters and Automatic Control for Chlorine Dosing in a Aerator Treatment Plant
Authors: Balarezo Juan Carlos , Buele Jorge , Naranjo-Ávalos Hernán , Castillo Franklin , Vargas William G. , Salazar Franklin W. 
Published: June 2021

Abstract
This work proposes the development and creation of an automatic monitoring and control system for the dosage of chlorine in the water treatment plant, purifying the vital liquid and avoiding the distribution and consumption of water contaminated by microorganisms. This is achieved by monitoring the physical parameters through the data sent by wireless sensors, acquiring them in a database, sending the data in real time to a web server, where they can be visible to the public, and generating automatic control in Based on the data obtained, this occurs in a water treatment pools. For this, a Raspberry Pi board is used, it acts as a data store, two Arduino Mega, acting as control nodes, a LAN server, and a PID control for the automatic control of chlorine dosage, thus achieving precautionary that the water is disinfected from any microorganism present.
Smart Gateless System using RFID Technology in Universiti Malaysia Perlis
Authors: Fazilah A F M , Jusoh M , Zakaria A , Sabapathy T , Ibrahim M F , Rahim H A , Azizan M M , Zakaria M Z , Nasir N F M , Albreem M A M , Ahmad R B 
Published: June 2021

Abstract
This paper describes a smart monitoring gate-less system by using RFID technologies that had been implemented in Universiti Malaysia Perlis. The objective of this system is to ease the security to monitoring the cars-in and cars-out from the main gate manually. The security can check and manage the staff by system management in PC. This smart monitoring gate-less system consists of RFID tag antenna that be attached at sticker’s staff, RFID reader and software management application. For the software management application, this project used LabView as a simulation tool for the data acquisition. The data which contains of name, staff number, number plate, car model and color will be stored in cloud-based storage. All the information data can be accessed from any location because the security management can access it through mobile. This project will present how efficient the vehicle control application on campus which enable the security guard to check a car sticker either legal or illegal in a shortest way.
Identification of phosphate solubilizing fungi under Scaphium macropadum stands in Gunung Leuser National Park, North Sumatra
Authors: Elfiati D , Susilowati A , Hasibuan S R S 
Published: June 2021

Abstract

Scaphium macropadum is a wild tree species producing important timber and medicinal fruits. As a result of overexploitation, this species has decreased its population in the wild although categorized as least concern based on the IUCN red list of threatened species. Phosphate solubilizing fungi (PSF) are a group of soil microorganisms that can increase the availability and uptake of phosphorus (P) by plants. This study aims to isolate the phosphate solubilizing fungi from the soil under Scaphium macropadum stands following its morphological identification of species. Soil sampling was carried out randomly, with a depth of 0–20 cm under 12 stands of Scaphium macropadum in Gunung Leuser National Park, North Sumatra. Isolation of PSF was carried out using Pikovskaya medium with tricalcium phosphate (Ca3(PO4)2) as a source of inorganic P then the solubilization activity was expressed in the solubilization index (SI). The isolates obtained were identified morphologically to the genus level. The results obtained 15 isolates of PSF with SI ranging from 0.96 to 1.16. Based on the morphological identification, all isolates were identified as members of Aspergillus.
Growth and yield characteristics of soybean on the usage of several varieties and fertilizers N, P, K in tidal lowland
Authors: Zulkifli T B H , Hasanah Y 
Published: June 2021

Abstract
The increasing soybean production by expanding areas to marginal land, such as tidal lowland, has became the target of Indonesian government. The objective of the research was to select several varieties of soybeans and the appropriate dosage of N, P, K fertilizers to increase the soybean growth and yields characteristics. This research was conducted at tidal lowland in Sei Ular Village, Secanggang sub-District, Langkat District from July to December 2019, use a factorial randomized block design with two factors and three replications. The first factor is soybean varieties (Anjosmoro; Deja-1; Dena-1 and Dering-1). The second factor is application of N, P and K fertilizers at dosage namely un-fertilizer; 50kgha−1 N, 40kgha−1 P2O5, 50kgha−1 K2O; 100kgha−1 N, 80kgha−1 P2O5, 100kgha−1 K2O and 150kgha−1 N, 120kgha−1 P2O5, 150kgha−1 K2O. The result of the research showed that the soybean varieties significantly differ affected on the plant height of soybeans at 30 DAP, volume and length of root in tidal lowland. The dosage of N, P, K fertilizers were significantly different on the plant height and root length, and their interactions significantly different on the shoot root ratio.
Agronomic traits performance of some promising lines of local upland rice (Oryza sativa L.) from SE Sulawesi grown under shading conditions
Authors: Sadimantara G R , Adawiah R , Leomo S , Febrianti E , Muhidin  
Published: June 2021

AbstractRice is primarily eaten by countries like Indonesia in Asia. The demanding rice rise every year and the Indonesian government is trying to satisfy the need for rice. The development rice tolerant to shade is one of the promising choices. The aim is to characterize the performance of upland a new rice cultivar. The study was conducted at the Experiment Farm, Department of Agronomy, University of Halu Oleo. Arrange in a split-plot design and repeated four times. The different shade levels as main plot and rice lines different as subplot. The shade level consists of four levels (N0=0%, N1=25-50%, N2=50-75% and N3> 75%). The upland rice lines were G1=GS11-1, G2=GS11-2, G3=GS12-1, G4=GS12-2 and G5=Lipigo as a control variety. The results indicated that shade significantly increased the plant height, leaf area and unfilled grains number. However, the shade level affected productive tiller and grain weight to decrease.
Germ cells of the mammalian female: A limited or renewable resource?
Authors: Hainaut Mathilde , Clarke Hugh J 
Published: June 2021

Abstract
In many non-mammalian organisms, a population of germ-line stem cells supports continuing production of gametes during post-natal life, and germ-line stem cells are also present and functional in male mammals. Traditionally, however, they have been thought not to exist in female mammals, who instead generate all their germ cells during fetal life. Over the last several years, this dogma has been challenged by several reports, while being supported by others. We describe and compare these conflicting studies with the aim of understanding how they came to opposing conclusions. We first consider studies that, by examining marker-gene expression, the fate of genetically marked cells, and consequences of depleting the oocyte population, addressed whether ovaries of post-natal females contain oogonial stem cells that give rise to new oocytes. We next discuss whether ovaries contain cells that, even if inactive under physiological conditions, nonetheless possess oogonial stem cell properties that can be revealed through cell culture. We then examine studies of whether cells harvested after long-term culture of cells obtained from ovaries can, following transplantation into ovaries of recipient females, give rise to oocytes and offspring. Finally, we note studies where somatic cells have been re-programmed to acquire a female germ-cell fate. We conclude that the weight of evidence strongly supports the traditional interpretation that germ-line stem cells do not exist post-natally in female mammals. However, the ability to generate germ cells from somatic cells in vitro establishes a method to generate new gametes from cells of post-natal mammalian females.