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Open AccessArticle
7 Pages, 928 KB Download PDF

A Switched-Capacitor Low-Pass Filter with Dynamic Switching Bias OP Amplifiers

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 100–106, 2017; DOI: 10.25046/aj020613
Abstract:

A switched capacitor low-pass filter employing folded-cascode CMOS OP Amps with a dynamic switching bias circuit capable of processing video signals, which enables low power consumption, and operation in wide bandwidths and low power supply voltages, is proposed. In this filter, charge transfer operations through two-phase clock pulses during the on-state period of the OP…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electronic Engineering (EEE))
Open AccessArticle
12 Pages, 1,683 KB Download PDF

Deploying Trusted and Immutable Predictive Models on a Public Blockchain Network

Advances in Science, Technology and Engineering Systems Journal, Volume 9, Issue 3, Page # 72–83, 2024; DOI: 10.25046/aj090307
Abstract:

Machine learning-based predictive models often face challenges, particularly biases and a lack of trust in their predictions when deployed by individual agents. Establishing a robust deployment methodology that supports validating the accuracy and fairness of these models is a critical endeavor. In this paper, we introduce a novel approach to deploying predictive models, such as…

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(This article belongs to the SP16 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2024) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
11 Pages, 1,234 KB Download PDF

EEG Feature Extraction based on Fast Fourier Transform and Wavelet Analysis for Classification of Mental Stress Levels using Machine Learning

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 6, Page # 46–56, 2023; DOI: 10.25046/aj080606
Abstract:

Mental stress assessment remains riddled with biases caused by subjective reports and individual differences across societal backgrounds. To objectively determine the presence or absence of mental stress, there is a need to move away from the traditional subjective methods of self-report questionnaires and interviews. Previously, it has been evidence that EEG Oscillations can discriminate mental…

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(This article belongs to the SP15 (Special Issue on Innovation in Computing, Engineering Science & Technology 2023) & Section Biomedical Engineering (EBI))
Open AccessArticle
7 Pages, 972 KB Download PDF

Tree-Based Ensemble Models, Algorithms and Performance Measures for Classification

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 6, Page # 19–25, 2023; DOI: 10.25046/aj080603
Abstract:

An ensemble method is a Machine Learning (ML) algorithm that aggregates the predictions of multiple estimators or models. The purpose of an ensemble module is to provide better predictive performance than any single contributing model. This can be achieved by producing a predictive model with reduced variance using bagging, and bias using boosting. The Tree-Based…

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(This article belongs to the SP15 (Special Issue on Innovation in Computing, Engineering Science & Technology 2023) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
10 Pages, 2,066 KB Download PDF

Three-phase Continuously Variable Series Reactor – Realistic Modeling and Analysis

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 3, Page # 202–211, 2023; DOI: 10.25046/aj080323
Abstract:

Continuously Variable Series Reactor (CVSR) is a device that can vary the reactance in an ac circuit by controlling the magnetization of a ferromagnetic core, shared by ac and dc windings. The bias dc current can change the equivalent ac reactance(inductance) in order to, for example, control load flow, damp oscillations, or fault current limitation.…

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(This article belongs to the SP14 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2022-23) & Section Electronic Engineering (EEE))
Open AccessArticle
8 Pages, 1,970 KB Download PDF

Tunable Resistorless Phase Shifter Realization with a Single VDGA

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 3, Page # 136–143, 2023; DOI: 10.25046/aj080315
Abstract:

This paper describes the design of a phase shifter with electrically adjustable parameters employing only one voltage differencing gain amplifier (VDGA) and one floating capacitor. This circuit requires no external resistors, resulting in a resistorless design and a low component count. The proposed circuit implements a first-order all-pass filter response with electronic control of its…

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(This article belongs to the SP14 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2022-23) & Section Electronic Engineering (EEE))
Open AccessArticle
8 Pages, 3,158 KB Download PDF

An Improved Model to Analyze the Impact of Cyber-Attacks on Power Systems

Advances in Science, Technology and Engineering Systems Journal, Volume 7, Issue 5, Page # 27–34, 2022; DOI: 10.25046/aj070504
Abstract:

In this paper, an improved model has been proposed for investigating the impact of cyber-attacks on power systems regarding frequency disturbances and voltage disruption while changing the load called ICAPS. The proposed ICAPS model is formulated by five different controllers, such as LFC, AGC, AGC-PID, AVR, and AVR-PID, implemented in two sets of the system…

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(This article belongs to the SP13 (Special Issue on Innovation in Computing, Engineering Science & Technology 2022) & Section Electrical Engineering (ELE))
Open AccessArticle
9 Pages, 1,865 KB Download PDF

Deep Learning Affective Computing to Elicit Sentiment Towards Information Security Policies

Advances in Science, Technology and Engineering Systems Journal, Volume 7, Issue 3, Page # 152–160, 2022; DOI: 10.25046/aj070317
Abstract:

Information security behaviour is an integral part of modern business and has become a central theme in many research studies. One of the essential tools available that can be used to influence information security behaviour is information security policies (ISPs). These types of policies, which is mandatory in most organisations, are formalised rules and regulations…

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(This article belongs to the SP12 (Special Issue on Multidisciplinary Sciences and Engineering 2021-22) & Section Information Systems in Computer Science (CIS))
Open AccessArticle
9 Pages, 1,457 KB Download PDF

Estimation of the Population Mean for Incomplete Data by using Information of Simple Linear Relationship Model in Data Set

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 4, Page # 161–169, 2021; DOI: 10.25046/aj060419
Abstract:

The objective of this research is to propose the estimator of the population mean for incomplete data by using information of simple linear relationship model in the data set. In addition, the factorization of the likelihood function is created to derive the maximum likelihood estimator for the population mean. The simulation study was conducted for…

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(This article belongs to Section Statistics & Probability (STP))
Open AccessArticle
9 Pages, 983 KB Download PDF

Practical Simulation of Grounded/Floating Lossy Inductors Based on Commercially Available Integrated Circuit LT1228

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 512–520, 2021; DOI: 10.25046/aj060258
Abstract:

The article suggests four circuit topologies for the practical simulation of grounded and floating lossy inductors. All the suggested circuits use commercially available integrated circuit LT1228 chips as active elements, and only two passive elements, namely one resistor and one capacitor. The first two of the proposed circuits employ only a single LT1228 active element…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Electronic Engineering (EEE))
Open AccessArticle
8 Pages, 998 KB Download PDF

Electronically Tunable Triple-Input Single-Output Voltage-Mode Biquadratic Filter Implemented with Single Integrated Circuit Package

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 1120–1127, 2021; DOI: 10.25046/aj0601125
Abstract:

This article proposes a compact and simple design of electronically adjustable voltage-mode biquadratic filter using fundamental active cell implemented on a single integrated circuit (IC) package as LT1228. The proposed circuit having triple inputs and single output (TISO) employs namely one resistor and two capacitors as the passive components. All the five possible biquadratic filtering…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Electronic Engineering (EEE))
Open AccessArticle
9 Pages, 644 KB Download PDF

Current Views on Issues and Technology Development in Forensic Accounting Education of Indonesia

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 78–86, 2021; DOI: 10.25046/aj060109
Abstract:

The objective of this study is to examine the current views of academics on issues and technology development in forensic accounting education. By applying the explanatory sequential mixed method, this study tries to acquire a better understanding of current perception regarding forensic accounting education. This study indicates that demand for forensic accounting services is expected…

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(This article belongs to Section Agriculture, Multidisciplinary (AMU))
Open AccessArticle
6 Pages, 648 KB Download PDF

Low Power Fast Settling Switched Capacitor PTAT Current Reference Circuit for Low Frequency Applications

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 865–870, 2020; DOI: 10.25046/aj0506103
Abstract:

This paper presents a low voltage, low power, fast settling switched capacitor based Proportional to Absolute Temperature (PTAT) current reference circuit. Unlike in a conventional resistor based PTAT current source, the proposed circuit saves a significant amount of silicon area on chip and hence the circuit becomes less susceptible to process variations. It creates a…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Electronic Engineering (EEE))
Open AccessArticle
6 Pages, 1,188 KB Download PDF

High-Temperature Optical Characterization of Wide Band Gap Light Emitting Diodes and Photodiodes for Future Power Module Application

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 2, Page # 17–22, 2019; DOI: 10.25046/aj040203
Abstract:

A systematic study of wide bandgap (WBG) based light emitting diodes (LEDs) and photodiodes (PDs) were conducted for the assessment of modular integration of optoelectronic devices into power modules. The temperature dependence of the photoluminescence (PL) efficiency of Indium gallium nitride/Gallium nitride (InGaN/GaN) multiple quantum wells (MQWs) material was studied from 10 to 800 K.…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Optics (OPT))
Open AccessArticle
4 Pages, 1,336 KB Download PDF

Difference in Speech Analysis Results by Coding

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 488–491, 2018; DOI: 10.25046/aj030555
Abstract:

Mental health disorder is becoming a social problem, and there is a need for technology that can easily check for states of stress and depression as a countermeasure. Conventional methods of diagnostic support and screening include self-administered psychological tests and use of biomarkers. However, there are problems such as burden on subjects, examination costs, dedicated…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Acoustics (ACO))
Open AccessArticle
8 Pages, 729 KB Download PDF

Using Nullors to Modify Linear Model Parameters of Transistors in an Analog Circuit

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 439–446, 2018; DOI: 10.25046/aj030550
Abstract:

Usually, after properly biasing an analog circuit we need to linearize its transistors in order to linearize the entire circuit for performance analysis and design. This linearization is done through modeling of devices, which is becoming more and more complicated as the electronic technology advances. This is not of course a major issue for circuit…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Electronic Engineering (EEE))
Open AccessArticle
7 Pages, 591 KB Download PDF

Face Recognition and Tracking in Videos

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 3, Page # 1238–1244, 2017; DOI: 10.25046/aj0203156
Abstract:

Advancement in computer vision technology and availability of video capturing devices such as surveillance cameras has evoked new video processing applications. The research in video face recognition is mostly biased towards law enforcement applications. Applications involves human recognition based on face and iris, human computer interaction, behavior analysis, video surveillance etc. This paper presents face…

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(This article belongs to the SP3 (Special issue on Recent Advances in Engineering Systems 2017) & Section Interdisciplinary Applications of Computer Science (CSI))

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