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Open AccessArticle
16 Pages, 1,131 KB Download PDF

A Novel Representative k-NN Sampling-based Clustering Approach for an Effective Dimensionality Reduction-based Visualization of Dynamic Data

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 4, Page # 08–23, 2020; DOI: 10.25046/aj050402
Abstract:

Visualization plays a crucial role in the exploratory analysis of Big Data. The direct visualization of Big Data is a challenging task and difficult to analyze. Dimensionality Reduction techniques extract the features in the context of visualization. Due to the unsupervised and non-parametric nature, most of the dimensionality reduction techniques are not evaluated quantitatively and…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Information Systems in Computer Science (CIS))
Open AccessArticle
10 Pages, 967 KB Download PDF

System-Level Test Case Design for Field Reliability Alignment in Complex Products

Advances in Science, Technology and Engineering Systems Journal, Volume 10, Issue 6, Page # 55–64, 2025; DOI: 10.25046/aj100605
Abstract:

Achieving targeted reliability for complex products in real-world field environments remains a persistent challenge, even when laboratory validation suggests high performance. A significant reliability gap often emerges during the initial deployment phase, typically within the first one to five years where field failure rates can be up to twice those predicted in controlled settings. Compounding…

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(This article belongs to the SP19 (Special Issue on Innovation in Computing, Engineering Science & Technology 2025-26) & Section Industrial Engineering (EID))
Open AccessArticle
7 Pages, 7,186 KB Download PDF

Estimating a Minimum Embedding Dimension by False Nearest Neighbors Method without an Arbitrary Threshold

Advances in Science, Technology and Engineering Systems Journal, Volume 7, Issue 4, Page # 114–120, 2022; DOI: 10.25046/aj070415
Abstract:

The false nearest neighbors (FNN) method estimates the variables of a system by sequentially embedding a time series into a higher-dimensional delay coordinate system and finding an embedding dimension in which the neighborhood of the delay coordinate vector in the lower dimension does not extend into the higher, that is, a dimension in which no…

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(This article belongs to the SP13 (Special Issue on Innovation in Computing, Engineering Science & Technology 2022) & Section Mathematics (MAT))
Open AccessArticle
21 Pages, 1,007 KB Download PDF

On the Construction of Symmetries and Retaining Lifted Representations in Dynamic Probabilistic Relational Models

Advances in Science, Technology and Engineering Systems Journal, Volume 7, Issue 2, Page # 73–93, 2022; DOI: 10.25046/aj070207
Abstract:

Our world is characterised by uncertainty and complex, relational structures that carry temporal information, yielding large dynamic probabilistic relational models at the centre of many applications. We consider an example from logistics in which the transportation of cargoes using vessels (objects) driven by the amount of supply and the potential to generate revenue (relational) changes…

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(This article belongs to the SP12 (Special Issue on Multidisciplinary Sciences and Engineering 2021-22) & Section Applied Mathematics (MAP))
Open AccessArticle
17 Pages, 465 KB Download PDF

Data Stream Summary in Big Data Context: Challenges and Opportunities

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 4, Page # 414–430, 2021; DOI: 10.25046/aj060447
Abstract:

With the advent of Big Data, we are witnessing a rapid and varied production of huge amounts of sequential data that can have multiple dimensions, we speak of data streams. The characteristics of these data streams make their processing and storage very difficult and at the same time reduce the possibilities of querying them a…

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(This article belongs to Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
5 Pages, 796 KB Download PDF

Recycling and Reuse of Wastewater Generated in Car-Washing Facilities

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 521–525, 2021; DOI: 10.25046/aj060259
Abstract:

Fresh water is already scarce in the world, especially in the Middle East (ME). Desalination industry is the main supplier of the potable water to the municipalities in the ME region. It is well known the high cost of a liter of water produced by the desalination process. Unfortunately, car-washing service consumes substantial amount of…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Green & Sustainable Science & Technology (GSS))
Open AccessArticle
19 Pages, 3,727 KB Download PDF

The Designing of Institute’s Educational Mascots for Brand Identity

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 1759–1777, 2020; DOI: 10.25046/aj0506210
Abstract:

The purpose of this study is to show how to design the character used as the symbol or Mascot of the educational institution and how to apply the design results into advertising and Brand identity design such as printing art, poster, digital media, toy, and souvenir. In this study, the ideas of mascot design have…

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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
11 Pages, 1,037 KB Download PDF

Accelerating Decision-Making in Transport Emergency with Artificial Intelligence

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 520–530, 2020; DOI: 10.25046/aj050662
Abstract:

The paper addresses speeding up meetings in a networked environment during rescue works in a transport emergency. Several groups of representatives of various services and observers participate in those meetings. The number of wrong decisions tends to increase because remote participants cannot understand each other quickly. First, the meetings must be efficiently held to avoid…

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(This article belongs to Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
7 Pages, 673 KB Download PDF

Vietnamese Text Classification with TextRank and Jaccard Similarity Coefficient

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 363–369, 2020; DOI: 10.25046/aj050644
Abstract:

Text classification is considered one of the most fundamental and essential problems that deal with automatically classifying textual resources into pre-defined categories. Numerous algorithms, datasets, and evaluation measurements have been proposed to address the task. Within the era of information redundancy, it is challenging and time-consuming to engineering a sizable amount of data in multi-languages…

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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
5 Pages, 816 KB Download PDF

Inferring Topics within Social Networking Big Data, Towards an Alternative for Socio-Political Measurement

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 155–159, 2020; DOI: 10.25046/aj050618
Abstract:

This research sought to measure some socio-political indicators using millions of opinionated messages from social network sourced big data. Thus, and using an enhanced mixed method for sentiment analysis and a fusion model algorithm to infer topics from short text, this study attempted to demonstrate the value of computational approaches in measuring some phenomena in…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Information Systems in Computer Science (CIS))
Open AccessArticle
7 Pages, 952 KB Download PDF

Knowledge Mapping of Virtual Academic Communities: A Bibliometric Study Using Visual Analysis

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 493–499, 2020; DOI: 10.25046/aj050561
Abstract:

This study aims to provide a systematic and complete knowledge map for researchers in the field of virtual academic communities (VACs) and to help them quickly understand the key knowledge, evolution trends and research frontiers. This paper adopts the bibliometric method, with the help of bibliometric analysis software Citespace and VOSviewer quantitative analyze the retrieved…

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(This article belongs to Section Information Systems in Computer Science (CIS))
Open AccessArticle
6 Pages, 828 KB Download PDF

Simulated Annealing for Traveling Salesman Problem with Hotel Selection for a Distribution Company Based in Mexico

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 500–505, 2020; DOI: 10.25046/aj050562
Abstract:

A distribution company in Mexico covers the travel expenses for 21 sales representatives. Currently, the routes they follow are not established clearly, which can lead to high costs in this subject. A reduction of such cost is sought after, by optimizing the routes for each one of them. The following research finds an improvement on…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Engineering Management (EMM))
Open AccessArticle
5 Pages, 892 KB Download PDF

An Enhanced Fuzzy Clustering with Cluster Density Immunity

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 239–243, 2019; DOI: 10.25046/aj040429
Abstract:

Clustering is one of the well-known unsupervised learning methods that groups data into homogeneous clusters, and has been successfully used in various applications. Fuzzy C-Means(FCM) is one of the representative methods in fuzzy clustering. In FCM, however, cluster centers tend leaning to high density area because the sum of Euclidean distances in FCM forces high…

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(This article belongs to Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
6 Pages, 608 KB Download PDF

Photodecoloration of Methyl Orange Solution Assisted by ZrS3 Powders

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 1, Page # 165–170, 2019; DOI: 10.25046/aj040116
Abstract:

Zirconium trisulfide ZrS3 is a representative of transition metal polysulfides containing sulfur as S–1 in polysulfide, usually disulfide S22– groups. Semiconductive zirconium trisulfide which absorbs visible light near UV edge was considered as a possible photocatalyst. We experimentally studied photodecoloration of methyl orange in presence of ZrS3. It was shown for the first time that…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Chemical Engineering (ENC))
Open AccessArticle
11 Pages, 332 KB Download PDF

Structure-Preserving Modeling of Safety-Critical Combinational Circuits

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 1, Page # 472–482, 2018; DOI: 10.25046/aj030158
Abstract:

In this work, a representative combinational circuit is visualized in various ways. It is abstracted (concretized) from transistor level to gate level and a structure-preserving transition is carried out into a signal flow graph. For creating a signal flow plan it is necessary to swap the nodes and the edges in the signal flow graph.…

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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
6 Pages, 2,704 KB Download PDF

Signal-Based Metamodels for Predictive Reliability Analysis and Virtual Testing

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 1, Page # 342–347, 2018; DOI: 10.25046/aj030141
Abstract:

In the current industrial development, an increasing number of sensors is applied for monitoring of any kind of appliances and machines. A predictive mathematical model allows for realistic assessment of the health state of the appliance, indication of service requirements, as well as control of the appliance, serving as so-called digital twin on a control…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Aerospace Engineering (EAR))
Open AccessArticle
14 Pages, 2,481 KB Download PDF

Novel Analysis of Synchronous and Induction Generators in Parallel Operation Mode in an Isolated Electric System

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 203–216, 2017; DOI: 10.25046/aj020625
Abstract:

This paper presents an analysis of a parallel connection of one synchronous generator and one self-excited induction generator that feeds a resistive load and an Induction Motor. The system voltage and frequency are controlled by a voltage control loop and a speed control loop connected to synchronous generator. The induction generator speed is controlled by…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electrical Engineering (ELE))
Open AccessArticle
19 Pages, 1,833 KB Download PDF

Operational Efficiencies and Simulated Performance of Big Data Analytics Platform over Billions of Patient Records of a Hospital System

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 1, Page # 23–41, 2017; DOI: 10.25046/aj020104
Abstract:

Big Data Analytics (BDA) is important to utilize data from hospital systems to reduce healthcare costs. BDA enable queries of large volumes of patient data in an interactively dynamic way for healthcare. The study objective was high performance establishment of interactive BDA platform of hospital system. A Hadoop/MapReduce framework was established at University of Victoria…

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(This article belongs to the SP2 (Special Issue on Computer Systems, Information Technology, Electrical and Electronics Engineering 2017) & Section Applied Mathematics (MAP))

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