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Open AccessArticle
10 Pages, 796 KB Download PDF

Analysis of Vulnerabilities, Risks and Threats in the Process of Quota Allocation for the State University of Ecuador

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 673–682, 2020; DOI: 10.25046/aj050283
Abstract:

Different models and standards of information security were analyzed, to adopt a model that mitigates vulnerabilities, risks and threats in the quota allocation process for the State University in Ecuador. The main objective is defining a prototype for the management of processes and information security in this type of organization. It was used the deductive…

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(This article belongs to Section Information Systems in Computer Science (CIS))
Open AccessArticle
7 Pages, 771 KB Download PDF

Determinants of Students’ Actual use of the Learning Management System (LMS): An Empirical Analysis of a Research Model

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 614–620, 2020; DOI: 10.25046/aj050277
Abstract:

This study built and tested a research model to determine the determinants that impact students’ actual use of the learning management system. A survey questionnaire was used to gather data from 148 university students who used LMS in their course of study. The structural equation model was used to analyze quantitative data. The study revealed…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
9 Pages, 3,109 KB Download PDF

A Critical Analysis of Usability and Learning Methods on an Augmented Reality Application for Zoology Education

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 384–392, 2020; DOI: 10.25046/aj050250
Abstract:

In recent years, research has been conducted focused on the use of technologies in the classroom, but one of the main problems is to demonstrate that the use of this technology favors learning compared to traditional methods. One of these technologies is augmented reality that allows seeing virtual objects superimposed in the real world, but…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
8 Pages, 1,114 KB Download PDF

Methodology for Assessing Synchronization Conditions in Telecommunication Devices

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 320–327, 2020; DOI: 10.25046/aj050242
Abstract:

This paper represents analysis of principles providing maximally reliable delay estimation of signal synchronization devices in telecommunication. Clock synchronization schemes on the base of stochastic models, graph-analytic interpretation, analytical functional description and their parameters selection in case of real complex hindrance are analyzed. Dependences between dispersion of maximally reliable estimation of synchronization devices and signal…

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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, 885 KB Download PDF

Satisfaction of Old Graduates of Zootechnical Engineering for Improvement of Educational Quality at the UNCP

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 166–173, 2020; DOI: 10.25046/aj050221
Abstract:

Concept of university higher education quality is linked to the relevance of an educational project that promotes institutional transformation to improve the comprehensive training of new professionals. In this context, the research objective is to determine the graduates satisfaction level, trained with curricula 1979, 1985 and 1995 who have more than 20 years of graduation…

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(This article belongs to Section Multidisciplinary Sciences (MUS))
Open AccessArticle
5 Pages, 673 KB Download PDF

Big Data Analytics Using Deep LSTM Networks: A Case Study for Weather Prediction

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 133–137, 2020; DOI: 10.25046/aj050217
Abstract:

Recurrent Neural Networks has been widely used by researchers in the domain of weather prediction. Weather Prediction is forecasting the atmosphere for the future. In this proposed paper, Deep LSTM networks has been implemented which is the variant of RNNs having additional memory block and gates making them capable of remembering long term dependencies. Fifteen…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
10 Pages, 831 KB Download PDF

Analysis of Cyberattacks in Public Organizations in Latin America

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 116–125, 2020; DOI: 10.25046/aj050215
Abstract:

It was analyzed certain information about cyberattacks in Latin America and methods to counteract the aggressions that affect services, data and infrastructure. The problem is the cyberattack on information networks where there is interdependence between processes, people and devices within public organizations with the negative consequence of denial of services. The objective is to propose…

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(This article belongs to Section Information Systems in Computer Science (CIS))
Open AccessArticle
6 Pages, 1,112 KB Download PDF

In Body Antenna for Monitoring and Controlling Pacemaker

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 74–79, 2020; DOI: 10.25046/aj050209
Abstract:

This paper is an extension of work originally presented in 2019 International Conference on Automation, Computational and Technology Management (ICACTM). A micro-strip patch in-body designed antenna is constructed on pacemaker to monitor and control the pacemaker wirelessly. The antenna is intended for ISM (Industrial, Scientific, and Medical) band (2.4 GHz to 2.48 GHz). A perfect…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Telecommunications (TEL))
Open AccessArticle
9 Pages, 5,430 KB Download PDF

Distributed Linear Summing in Wireless Sensor Networks with Implemented Stopping Criteria

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 19–27, 2020; DOI: 10.25046/aj050203
Abstract:

Many real-life applications based on the wireless sensor networks are equipped with data aggregation mechanisms for suppressing or even overcoming negative environmental effects and data redundancy. In this paper, we present an extended analysis of the linear average consensus algorithm for distributed summing with bounded execution over wireless sensor networks. We compare a centralized and…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Network Engineering (ENW))
Open AccessArticle
10 Pages, 1,364 KB Download PDF

Effects of Split Ring Resonator (SRR) Metamaterial on the Radiation Pattern and Variation of the Heating Focus Point of the Microstrip Patch Antenna

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 307–316, 2020; DOI: 10.25046/aj050139
Abstract:

Metamaterial antennas are some sort of antennas which utilize metamaterials to improve the efficiency of small (small electrical) antenna systems and also enhance the antenna’s radiation pattern. The unusual properties of metamaterials such as coefficients of permittivity and permeability, as well as the negative refractive index, have led to increase the use of these artificial…

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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, 383 KB Download PDF

A Blockchain-Based Architecture for Smart Healthcare System: A Case Study of Saudi Arabia

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 40–47, 2020; DOI: 10.25046/aj050106
Abstract:

eHealth is the use of Information and Communication Technologies (ICT) to enhance health quality access. Health care innovations are an essential element of Vision 2030 and National Transformation Program (NTP) 2020 operational plan that will lead to an improvement in the quality of health care in Saudi Arabia. The objective of this paper is to…

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(This article belongs to Section Theory & Methods in Computer Science (CTM))
Open AccessArticle
7 Pages, 713 KB Download PDF

Single-leg Standing Ability and Lower Limb Movement Analysis of Collegiate Footballers and Sedentary Students

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 01–07, 2020; DOI: 10.25046/aj050101
Abstract:

Stability or balance is an integral component to perform daily activities without incurring injury or to be dependent on others. Sportsmen tend to have better balance than non-sports people but less is known about the single-leg balance ability. Furthermore, few studies analyzed the dynamic phase of single-leg stance that may contribute to better overall balance.…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Sport Sciences (SPS))
Open AccessArticle
11 Pages, 1,566 KB Download PDF

Experimental Analysis in Alternate Current and Direct Current of the Operating Parameters of a Universal Single-Phase Engine

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 6, Page # 360–370, 2019; DOI: 10.25046/aj040646
Abstract:

This article presents the experimental analysis of a rotary machine, Universal Motor Analysis; analysis that obeys the purpose of obtaining the almost perfect understanding of the electromechanical behavior of said unit of analysis; It should be noted that the variables to be analyzed were: voltage, current, power, torque, rpm, and power factor; specifically said data…

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(This article belongs to Section Electrical Engineering (ELE))
Open AccessArticle
4 Pages, 584 KB Download PDF

Quranic Reciter Recognition: A Machine Learning Approach

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 6, Page # 173–176, 2019; DOI: 10.25046/aj040621
Abstract:

Recitation and listening of the Holy Quran with Tajweed is an essential activity as a Muslim and is a part of the faith. In this article, we use a machine learning approach for the Quran Reciter recognition. We use the database of Twelve Qari who recites the last Ten Surah of Quran. The twelve Qari…

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(This article belongs to Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
9 Pages, 676 KB Download PDF

Q2 YouTube: Quantitative and Qualitative Information Analysis based Influencer-aware YouTube Channel Ranking Scheme

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 6, Page # 01–09, 2019; DOI: 10.25046/aj040601
Abstract:

With the development of big data, artificial intelligence and deep learning, various social information networks are becoming exponentially intelligent. Of all the various social networks, YouTube is so popular that it is called the YouTube era. Not only video viewers, but also actual video producers, influencer youtubers, are increasing, allowing individuals as well as operators…

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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
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, 946 KB Download PDF

Estimating Academic results from Trainees’ Activities in Programming Exercises Using Four Types of Machine Learning

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 321–326, 2019; DOI: 10.25046/aj040541
Abstract:

Predicting trainees’ final academic results in the early stage of programming class is a significant mission in the field of learning analytics. Performing exercises in programming class is hard and it takes a lot of time for trainees. For this reason, careful support with trainees are offered in many classes through classroom assistants (CAs). Even…

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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
5 Pages, 948 KB Download PDF

Android Application to Detect Cat Disease Using an Expert System

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 158–162, 2019; DOI: 10.25046/aj040521
Abstract:

The purpose of this research is to develop an android application named “TANYA MEOW” which can be used by cat owners to detect the diseases that their cats suffer based on visible symptoms. The cat owners need to answer questionnaire to detect what disease is suffering by their cat. The result of the disease is…

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(This article belongs to Section Software Engineering in Computer Science (CSE))
Open AccessArticle
10 Pages, 1,060 KB Download PDF

Preparation of Lead, Lead Alloy(S) And Other Salts from Exhausted Rechargeable Lead Batteries

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 529–538, 2019; DOI: 10.25046/aj040464
Abstract:

Metals of lead and some lead alloys, lead oxide, nickel and cobalt were recovered from exhausted battery by combined hydrometallurgy and pyro metallurgical method. The spent batteries were dismantled and leached in hot 2M and 5M nitric acid. The unleached fraction was heated with sodium carbonate to produce lead oxide. Salts in the leached solution…

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(This article belongs to Section Applied Chemistry (CAP))
Open AccessArticle
18 Pages, 1,256 KB Download PDF

Material, Structural Optimization and Analysis of Visible-Range Back-Illuminated OPFET photodetector

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 485–502, 2019; DOI: 10.25046/aj040459
Abstract:

High gain-bandwidth product and visible/UV contrast photodetectors are vital in Visible Light Communication (VLC) and Ultraviolet (UV) reflectance imaging applications respectively. We adopt material and structural optimization to perceive such photodetectors with back-illuminated Optical Field Effect Transistor (OPFET) wherein any potential difference in absorption coefficient of the semiconductor material between the visible and the UV…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Multidisciplinary Materials Science (MMU))
Open AccessArticle
9 Pages, 866 KB Download PDF

A Fuzzy-Based Approach and Adaptive Genetic Algorithm in Multi-Criteria Recommender Systems

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 449–457, 2019; DOI: 10.25046/aj040454
Abstract:

Recommender Systems (RSs) are termed as web-based applications that make use of filtering methods and several machine learning algorithms to suggest relevant user objects. It can be said that some techniques are usually adopted or trained to develop these systems that generate lists of suitable recommendations. Conventionally, RS uses a single rating approach to preference…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
6 Pages, 951 KB Download PDF

Enhancing Bodily Movements of the Visually Impaired Children by Airflow

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 308–313, 2019; DOI: 10.25046/aj040439
Abstract:

This study involved three departments of teachers and students. The concept of the flow-motivated exercise implemented with a set of flow nozzles. A computer-controlled airflow with specific music introduced, and the motion responses from the participants were analyzed during the initial test and field study. During the initial examination, we adjusted the magnitude and distance…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
9 Pages, 1,450 KB Download PDF

Localization of Emerging Leakages in Water Distribution Systems: A Complex Networks Approach

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 276–284, 2019; DOI: 10.25046/aj040435
Abstract:

Water distribution networks are infrastructural systems designed for providing potable water to consumers. In these last decades, the importance of assessing and identifying emerging leakages has become a primary issue, because of the high level of water loss characterizing such systems worldwide. In this paper, a new approach aimed at the prompt localization of leakages…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Water Resources (WRS))
Open AccessArticle
7 Pages, 883 KB Download PDF

Automatic Service Orchestration for e-Health Application

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 244–250, 2019; DOI: 10.25046/aj040430
Abstract:

This paper describes an architectural approach to the development of dynamic service-oriented systems for e-Health using the service orchestration mechanism and semantic technologies. The main idea is the dynamic synthesis of the complex functionality required by user or by software agent. This idea should help to build and easily extend the applied loose-coupled systems without…

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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
6 Pages, 430 KB Download PDF

Predictive Modelling of Student Dropout Using Ensemble Classifier Method in Higher Education

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 206–211, 2019; DOI: 10.25046/aj040425
Abstract:

Currently, one of the challenges of educational institutions is drop-out student issues. Several factors have been found and determined potentially capable to stimulate dropouts. Many researchers have been applied data mining methods to analyze, predict dropout students and also optimize finding dropout variables in advance. The main objective of this study is to find the…

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(This article belongs to Section Software Engineering in Computer Science (CSE))

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