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Open AccessArticle
6 Pages, 830 KB Download PDF

The First Study on Ionospheric Peak Variability over Equatorial Africa (COSMIC-2)

Advances in Science, Technology and Engineering Systems Journal, Volume 10, Issue 4, Page # 14–19, 2025; DOI: 10.25046/aj100402
Abstract:

In regions like the African equatorial region, where ground-based sensors like ionosondes and incoherent scatter radars are limited, satellite-based radio occultation (RO) observations offer a new alternative for ionospheric data collecting and optimization. Using RO measurements from the mostly newly launched COSMIC-2 (Constellation Observing System for Meteorology, Ionosphere, and Climate-2) mission, hence, the equatorial Africa,…

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(This article belongs to Section Meteorology & Atmospheric Sciences (MAS))
Open AccessArticle
11 Pages, 5,100 KB Download PDF

Analysis of Linear and Non-Linear Short-Term Pulse Rate Variability to Evaluate Emotional Changes during the Trier Social Stress Test

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 3, Page # 69–79, 2023; DOI: 10.25046/aj080309
Abstract:

In conjunction with psychological stress, physiological indicators such as heart rate (HR) and heart rate variability (HRV) are frequently employed. This study uses a substitute for heart rate variability (HRV) known as short-term pulse rate variability (PRV) to evaluate emotional changes. We examined sixteen college students using a low-cost photoplethysmograph and obtained a short-term PRV…

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(This article belongs to the SP14 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2022-23) & Section Psychology (PCL))
Open AccessArticle
10 Pages, 672 KB Download PDF

Intermediation in Technology Transfer Processes in Agro-Industrial Innovation Systems: State of Art

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 6, Page # 66–75, 2021; DOI: 10.25046/aj060610
Abstract:

Considering the importance of addressing innovation issues that impact the development of economic sectors, this document presents the research work aimed at establishing a state of the art related to technology transfer and intermediation issues, which can be adopted in the innovation systems. In this case, the agro-industrial innovation system is taken as a reference…

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(This article belongs to the SP11 (Special Issue on Innovation in Computing, Engineering Science & Technology 2021) & Section Operations Research & Management Science (ORM))
Open AccessArticle
13 Pages, 3,825 KB Download PDF

Kamphaeng Saen Beef Cattle Identification Approach using Muzzle Print Image

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 4, Page # 110–122, 2021; DOI: 10.25046/aj060413
Abstract:

Identification of Kamphaeng Saen beef cattle is important of the registration and traceability purposes. For a traditional identification methods, Hot Branding, Freeze Branding, Paint Branding, and RFID Systems can be replaced by genius human. This paper proposed a Kamphaeng Saen beef cattle identification approach using muzzle print images as an Animal Biometric approach. There are…

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(This article belongs to Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
10 Pages, 1,758 KB Download PDF

Quality Function Deployment: Comprehensive Framework for Patient Satisfaction in Private Hospitals

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 1440–1449, 2021; DOI: 10.25046/aj0601163
Abstract:

This paper addresses the quality of private healthcare services in the western region of the Kingdom of Saudi Arabia (KSA) and provides a comprehensive analysis of the customer requirement to improve the quality of these services. The study begins by reviewing literature on the subject of quality in general and then in terms of the…

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(This article belongs to Section Industrial Engineering (EID))
Open AccessArticle
5 Pages, 914 KB Download PDF

Controlling A Multiphase Induction Motor with Multilevel Converter Paradigm

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 641–645, 2021; DOI: 10.25046/aj060274
Abstract:

Induction motors (IM) are used widely in high energy applications where high torque is required such as ships/ aircrafts manufacturing industry. Those motor drivers are populated in many advantages especially their wide control strategies. However, new technology is invented for enhancing efficiency and smoothing the torque curve by increasing number of phases in the motor…

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(This article belongs to Section Electrical Engineering (ELE))
Open AccessArticle
9 Pages, 973 KB Download PDF

A Framework for the Alignment of ICT with Green IT

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 593–601, 2021; DOI: 10.25046/aj060268
Abstract:

The Public Administration is forced to transform itself by taking advantage of the contribution of ICT to in the process of reducing bureaucracy and increase transparency, promoting the dematerialization of processes, increasing the quality of online services, allowing greater ubiquity of access, reducing response times, in the search for improvement of the quality of life…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
9 Pages, 739 KB Download PDF

SEA: An UML Profile for Software Evolution Analysis in Design Phase

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 1334–1342, 2021; DOI: 10.25046/aj0601153
Abstract:

Software evolution is one of the software process activities that occupies a major percentage of software development cost. Since requirements change continually and new technologies emerge, software should be adapted to satisfy these new changes to continue to survive. Despite software evolution being performed after software validation and deployment, software developers should predict at earlier…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Software Engineering in Computer Science (CSE))
Open AccessArticle
10 Pages, 2,410 KB Download PDF

Prototype of an Augmented Reality Application for Cognitive Improvement in Children with Autism Using the DesingScrum Methodology

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 587–596, 2021; DOI: 10.25046/aj060163
Abstract:

In this COVID-19 pandemic, it has been registered that children with autism are not learning properly with this virtual modality in Peruvian education. The main objective of this research work is to design a mobile application with augmented reality so that autistic children can improve their cognitive development in their virtual and face-to-face classes, the…

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(This article belongs to Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
6 Pages, 840 KB Download PDF

Sensorless Control and Corrected Error Commutation of the Brushless DC Motor

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 224–229, 2021; DOI: 10.25046/aj060125
Abstract:

This paper presents a simple method for correcting the error of commutation windings for sensorless control of a brushless DC motor with a small inductance. Switching error analysis is performed based on the phase currents of the switched-off and switched-on phases. To correct the commutatiuon signals for the inverter, a speed-independent function is used, calculated…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Automation & Control Systems (ACS))
Open AccessArticle
7 Pages, 985 KB Download PDF

Analysis of Physical and Mechanical Properties of Galvanic-Plasma Wear-Resistant Coatings

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 1387–1393, 2020; DOI: 10.25046/aj0506167
Abstract:

This article shows the possibility of creating high wear-resistant and corrosion-resistant coating by plasma electrolytic oxidation (PEO) on the AlSi12Cu aluminum alloy. The combination of influencing parameters during processing allows to influencing of the set of quality indicators of coating, such as the thickness of the coating layer, microhardness, porosity, phase and elemental composition. The…

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(This article belongs to Section Coatings & Films in Materials Science (MCF))
Open AccessArticle
24 Pages, 4,256 KB Download PDF

Automated Extraction of Heavyweight and Lightweight Models of Urban Features from LiDAR Point Clouds by Specialized Web-Software

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 72–95, 2020; DOI: 10.25046/aj050609
Abstract:

3D city modeling may be considered as one of the key applications, that are provided by the Automated Feature Extraction (AFE) techniques from LiDAR data. The authors attempt to prove that with growing availability of LiDAR surveying methods the resulted 3D city models become the most significant modeled features for any urban environment. Our paper…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Environmental Sciences (ENS))
Open AccessArticle
8 Pages, 270 KB Download PDF

Qualitative Properties of a Cell Proliferating Model with Multi-phase Transition and Age Structure

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 01–08, 2020; DOI: 10.25046/aj050601
Abstract:

In this paper we study a cell division cycle modeled by a system of partial differential equations with an age structure. This model translates the many regulatory mechanisms within the cell cycle where it introduces the notion of phases. The individual cell can be either in I phases where the transition between theses phases are…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Biochemistry & Molecular Biology (BMB))
Open AccessArticle
8 Pages, 1,019 KB Download PDF

Essential Features/Issues of a Multi-Phase Switching Synchronous Buck Regulator

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 1056–1063, 2020; DOI: 10.25046/aj0505130
Abstract:

This paper addresses essential features/issues and proposes solutions that would improve the overall performance of a multi-phase buck converter. Low efficiency at light load is addressed with phase shedding, load fast transient and regulated output voltage spiking/dipping is addressed with novel helper technique at the point of load (output node). An Integrated current sensing is…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Electrical Engineering (ELE))
Open AccessArticle
7 Pages, 807 KB Download PDF

The Curriculum Developer Team Assignment Analysis Using Ones Assignment Method

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 840–846, 2020; DOI: 10.25046/aj0505102
Abstract:

This examination plans to investigate the task issue in the educational program designer group utilizing the Ones Assignment Method. The calculation of this technique as follows. At first characterized the task grid, at that point by utilizing determinant portrayal acquired a diminished framework which has in any event one in each line and segments. At…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
6 Pages, 1,153 KB Download PDF

Growth Models and Age Estimation of Rice using Multitemporal Vegetation Index on Landsat 8 Imagery

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 506–511, 2020; DOI: 10.25046/aj050563
Abstract:

Age and growth are two essential rice biophysics parameters used to determine the health parameters and production rate. The spatial data of both parameters can utilize remote sensing technology, which in turn makes use of several vegetation indices to achieve accurate estimation. However, due to the rapid changes in rice plants’ characteristics, it is essential…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Agricultural Engineering (AEN))
Open AccessArticle
14 Pages, 867 KB Download PDF

Commercialization Process of Disruptive Innovations in Corporate Ventures and Spinoff Companies: A Comparison

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 621–634, 2020; DOI: 10.25046/aj050278
Abstract:

One of the most critical challenges that large companies, small enterprises and research institutes face, when commercializing their innovations, is the transfer process at the moment of scaling up. These organizations often transfer their innovation to either existing business units or create a new business entirely. The process of transferring innovations to an existing unit…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Engineering Management (EMM))
Open AccessArticle
7 Pages, 1,496 KB Download PDF

New Color Image Encryption for Medical Images Based on Three Dimensional Generalized Chaotic Cat Map and Combined Cellular Automata

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 104–110, 2020; DOI: 10.25046/aj050213
Abstract:

Medical images are transmitted via the Internet or the hospital intranet which include many important information about the patient’s personal information. Medical image encryption is a technology that can effectively protect the information contained in these medical images. In this paper, we give a secure and trusty Combined Cellular Automata (CoCA) based medical image encryption…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Telecommunications (TEL))
Open AccessArticle
8 Pages, 671 KB Download PDF

Analysis of Information Security for a Voting Process for Sectional Governments in Ecuador

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 352–359, 2019; DOI: 10.25046/aj040546
Abstract:

Knowing about different events in several Latin American countries, as well as in Ecuador, in relation to data alteration, in the different sectional voting processes, it has been necessary to carry out a security analysis provided by the systems of choice in the different sectional governments of the country. The objective of this study is…

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(This article belongs to Section Information Systems in Computer Science (CIS))
Open AccessArticle
6 Pages, 1,157 KB Download PDF

Integrating Diacritics Restoration and Question Classification into Vietnamese Question Answering System

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 207–212, 2019; DOI: 10.25046/aj040526
Abstract:

This paper presents a solution for question answering system for Vietnamese language by integrating diacritics restoration and question classification via deep learning approach. It could be said that this will be the first research integrating two phases into Vietnamese question answering system. Question classification has a critical role in the question answering system. However if…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
12 Pages, 819 KB Download PDF

DFIG Defects Diagnosis Method for Wind Energy Conversion Chain

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 174–185, 2019; DOI: 10.25046/aj040523
Abstract:

This paper is an extension of research work originally presented in 2018 IEEE fifth International Congress on Information Science and Technology (CiSt). The research consists on developing method to diagnose electrical defects affecting wind turbine doubly-fed induction generator DFIG which constitutes a crucial part of wind energy conversion chain. First off all, we create a…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Electrical Engineering (ELE))
Open AccessArticle
12 Pages, 549 KB Download PDF

Improved DTC Control Strategy of B12 Inverter Fed BLDC Motor Drives Considering Commutation Torque Dips

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 427–438, 2018; DOI: 10.25046/aj030549
Abstract:

In most industrial high-power applications, the brushless DC (BLDC) motor is connected to multi-level inverters specially the three-level NPC inverters (B12). Torque ripple is a critical issue in BLDC motor drives. Accordingly, minimizing the ripple produced in the torque is necessary to enhance the BLDC motor drive performances. This paper aims to develop two direct…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Electrical Engineering (ELE))
Open AccessArticle
9 Pages, 714 KB Download PDF

The Model Development of an Effective Triggering System of Production Kanban Size towards Just-In-Time (JIT) Production

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 298–306, 2018; DOI: 10.25046/aj030535
Abstract:

The contents of this article consist of an extension original work presented at the 4th International Conference on Control, Automation and Robotics (ICCAR 2018) and aims to develop the systematic model of an effective triggering system of production Kanban size towards Just-In-Time (JIT) production system. The developed model was introduced based on the philosophy of…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Industrial Engineering (EID))
Open AccessArticle
13 Pages, 1,997 KB Download PDF

Towards an Efficient Federated Cloud Service Selection to Support Workflow Big Data Requirements

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 235–247, 2018; DOI: 10.25046/aj030529
Abstract:

Cloud Computing is considered nowadays an attractive solution to serve the Big Data storage, processing, and analytics needs. Given the high complexity of Big Data workflows and their contingent requirements, a single cloud provider might not be able alone to satisfy these needs. A multitude of cloud providers that offer myriad of cloud services and…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Software Engineering in Computer Science (CSE))
Open AccessArticle
12 Pages, 1,665 KB Download PDF

Towards Process Standardization for Requirements Analysis of Agent-Based Systems

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 3, Page # 80–91, 2018; DOI: 10.25046/aj030311
Abstract:

The development of agent-based systems is negatively impacted by the lack of process standardization across the major development phases, such as the requirements analysis phase. This issue creates a key barrier for agent technology stockholders regarding comprehending and analyzing complexity associated with these systems specifications. Instead, such fundamental low-level infrastructure is loosely attended to in…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Software Engineering in Computer Science (CSE))

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