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Open AccessArticle
9 Pages, 8,945 KB Download PDF

Infrastructure-as-a-Service Ontology for Consumer-Centric Assessment

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 6, Page # 37–45, 2023; DOI: 10.25046/aj080605
Abstract:

In the context of adopting cloud Infrastructure-as-a-Service (IaaS), prospective consumers need to consider a wide array of both business and technical factors associated with the service. The development of an intelligent tool to aid in the assessment of IaaS offerings is highly desirable. However, the creation of such a tool requires a robust foundation of…

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(This article belongs to the SP15 (Special Issue on Innovation in Computing, Engineering Science & Technology 2023) & Section Information Systems in Computer Science (CIS))
Open AccessArticle
7 Pages, 9,194 KB Download PDF

Photoluminescence Properties of Eu(III) Complexes with Two Different Phosphine Oxide Structures and Their Potential uses in Micro-LEDs, Security, and Sensing Devices: A Review

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 3, Page # 154–160, 2023; DOI: 10.25046/aj080317
Abstract:

In the field of micro-LED displays, there is strong demand for red phosphors with high photoluminescence intensity, high color purity, and small particle size. Here, we focus on Eu(III) complexes because they produce sharp photoluminescence spectra with high color purity and can be dissolved in polymer, enabling a reduction in particle size to the molecular…

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(This article belongs to the SP14 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2022-23) & Section Multidisciplinary Materials Science (MMU))
Open AccessArticle
9 Pages, 6,068 KB Download PDF

Achieving a High Isolation for the Triple-band MIMO Antenna in 5G/ Wi-Fi 6 Applications using Symmetric Parasitic Structure

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 2, Page # 139–147, 2023; DOI: 10.25046/aj080216
Abstract:

Recently, the Multiple-input multiple-output (MIMO) antennas have been used a lot and attracted many researchers in advanced high-speed wireless communication systems. MIMO antennas are an essential part not only in access points but also in end-user devices. This technology allows a significant increase in channel capacity, but also lead to a challenge of minimize mutual…

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(This article belongs to Section Electronic Engineering (EEE))
Open AccessArticle
10 Pages, 1,075 KB Download PDF

Dependence of the Knowledge Structure of the Company Employees on a Set of the Competencies

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 699–708, 2021; DOI: 10.25046/aj060281
Abstract:

The article substantiates the relevance of conducting research on the structural characteristics of a company’s employee knowledge, which is the result of his mental activity and his practical experience. The conditions under which information becomes a source of employee knowledge are determined. An abstract analysis of the process of transforming knowledge into an intellectual product…

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(This article belongs to Section Engineering Management (EMM))
Open AccessArticle
13 Pages, 8,383 KB Download PDF

Novel Infrastructure Platform for a Flexible and Convertible Manufacturing

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 356–368, 2021; DOI: 10.25046/aj060141
Abstract:

Sales behavior and the technical development of products influence their fabrication. As market influences become increasingly volatile and unpredictable, factories will have to adapt their manufacturing to market trends even more in the future. Adaptation is referred to as convertibility and can be achieved, among other things, by mobile and intercompatible machines. Enabling machines to…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Manufacturing Engineering (EMF))
Open AccessArticle
8 Pages, 641 KB Download PDF

Investigating the Optical Behavior of Single/Multi-Dimensional Photonic Crystal Structures for Photovoltaic Applications

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 951–958, 2020; DOI: 10.25046/aj0506113
Abstract:

The results investigated in this work are toward the optimization of the photonic crystal structures in 1D and 2D scale. One-dimensional distributed Bragg reflectors (DBRs) have demonstrated substantial potential in various optoelectronic applications, due to the observed tunable optical band-gap. Herein, the use of DBRs in light trapping solar cells was simulated and validated, representing…

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(This article belongs to Section -)
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, 1,109 KB Download PDF

A Cavity Structure based Flexible Piezoelectric for Low-Frequency Vibration Energy Harvesting

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 1042–1049, 2020; DOI: 10.25046/aj0505128
Abstract:

Piezoelectric energy harvesters (PEH) can be used in many areas of application, including human walking, railways, pavements and bridges. Piezoelectric energy harvesters are currently based on two types of external forces, namely pressure load and mechanical oscillation or vibration. A vibration energy harvesting (VEH) is a mechanical oscillation in a piezoelectric energy harvester that harvested…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Instruments & Instrumentation (IIN))
Open AccessArticle
13 Pages, 4,219 KB Download PDF

Four-Dimensional Sparse Data Structures for Representing Text Data

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 154–166, 2020; DOI: 10.25046/aj050521
Abstract:

This paper focuses on a string encoding algorithm, which produces sparse distributed representations of text data. A characteristic feature of the algorithm described here, is that it works without tokenizing the text and can avoid other data preparation steps, such as stemming and lemmatization. The text can be of arbitrary size, whether it is a…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
8 Pages, 279 KB Download PDF

Learning the Influence between Partially Observable Processes using Scorebased Structure Learning

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 16–23, 2020; DOI: 10.25046/aj050503
Abstract:

The difficulty of learning the underlying structure between processes is a common task found throughout the sciences, however not much work is dedicated towards this problem. In this paper, we attempt to use the language of structure learning to address learning the dynamic influence network between partially observable processes represented as dynamic Bayesian networks. The…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
10 Pages, 1,095 KB Download PDF

Mitigating Congestion in Restructured Power System using FACTS Allocation by Sensitivity Factors and Parameter Optimized by GWO

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 01–10, 2020; DOI: 10.25046/aj050501
Abstract:

In modern deregulated power industry, private sector has invested a lot to supply for extended power demand using the preexisting power system framework. This resulted into increased loading of transmission lines which has to work now to hit their thermal limits. The overloading of transmission line resulted in congestion and hence increase in loss of…

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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
9 Pages, 327 KB Download PDF

Interpolatory Projection Techniques for H2 Optimal Structure-Preserving Model Order Reduction of Second-Order Systems

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 4, Page # 715–723, 2020; DOI: 10.25046/aj050485
Abstract:

This paper focuses on exploring efficient ways to find H2 optimal Structure-Preserving Model Order Reduction (SPMOR) of the second-order systems via interpolatory projection-based method Iterative Rational Krylov Algorithm (IRKA). To get the reduced models of the second- order systems, the classical IRKA deals with the equivalent first-order converted forms and estimates the first-order reduced models.…

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(This article belongs to Section Automation & Control Systems (ACS))
Open AccessArticle
10 Pages, 2,808 KB Download PDF

Seismic Response Modification Factor for Special Concrete Structures Based on Pushover & Non-linear Time History Analyses

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 436–445, 2020; DOI: 10.25046/aj050156
Abstract:

Reinforced concrete (RC) structures are able to dissipate a large amount of energy during earthquake (EQ). RC structures designed to resist EQs must have enough strength and stiffness to prevent any possible collapse as well as to control deflection. Seismic codes include the response reduction/modification factor(R) in calculation of equivalent lateral forces used for EQ…

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(This article belongs to Section Civil Engineering (ECV))
Open AccessArticle
7 Pages, 2,062 KB Download PDF

Enabling 3D Heterogeneous Structures Towards Smart Chips: A Review

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 267–273, 2020; DOI: 10.25046/aj050134
Abstract:

This review paper discusses recent research outcomes of fabricating three-dimensional (3D) heterogeneous structures in complementary metal-oxide-semiconductor (CMOS) integrated circuit (IC) technologies to enable smart future chips. The CMOS-based 3D heterogeneous structures demonstrated are vertical magnetic-cored inductors for radio-frequency (RF) ICs, through-back-end-of-line (BEOL) metal wall structures for global flying noise isolation, above-IC nano crossbar array electrostatic…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Electronic Engineering (EEE))
Open AccessArticle
4 Pages, 392 KB Download PDF

Design and Optimization of ZnO Nanostructured SAW-Based Ethylene Gas Sensor with Modified Electrode Orientation

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 263–266, 2020; DOI: 10.25046/aj050133
Abstract:

Here the work approaches the detection of fruit maturity level. In addition, a gas sensor is proposed to obtain better sensitivity to know the level of ethylene gas released from matured fruit. Better sensitivity can be achieved by obtaining an enhanced active area, changing the intermediate layer thickness and the pitch value of the electrode.…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Instruments & Instrumentation (IIN))
Open AccessArticle
7 Pages, 2,542 KB Download PDF

Transmission Line Restoration Using ERS Structure

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 394–400, 2019; DOI: 10.25046/aj040551
Abstract:

In the past decades, various ideas have proposed for reconductoring of overhead lines to enhance power transmission capacity considering growing energy demand. Conventional method of reconductoring is use to take couple of weeks but availability of shutdown for a prolong period is a major constraint in line uprating. Emergency restoration structure (ERS) is effective to…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Electrical Engineering (ELE))
Open AccessArticle
15 Pages, 714 KB Download PDF

Logic Error Detection System based on Structure Pattern and Error Degree

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 01–15, 2019; DOI: 10.25046/aj040501
Abstract:

The importance of programming skills has increased with advances in information and communication technology (ICT). However, the difficulty of learning programming is a major problem for novices. Therefore, we propose a logic error detection algorithm based on structure patterns, which are an index of similarity based on abstract syntax trees, and error degree, which is…

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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
14 Pages, 1,962 KB Download PDF

Model-Driven Engineering Infrastructure and Tool Support for Petrochemical Industry Automation

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 174–187, 2019; DOI: 10.25046/aj040422
Abstract:

The definition of equipment and components of physical plants is a necessary step towards the development of simulation, control, and supervisory applications for the petrochemical industry. Often it happens that the same plant/equipment is (re)modeled on each application, causing a waste-oftime on repetitive (re)design, besides introducing potential inconsistencies between the models. Moreover, even though each…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Software Engineering in Computer Science (CSE))
Open AccessArticle
8 Pages, 1,116 KB Download PDF

A Spectrum Sharing based Metering Infrastructure for Smart Grid Utilizing LTE and WiFi

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 2, Page # 70–77, 2019; DOI: 10.25046/aj040209
Abstract:

In advanced metering infrastructure (AMI) of smart grid, WiFi is an appropriate choice for its bidirectional communication requirement to transmit data to the billing center. But, WiFi functions in the free spectrum bands and LTE also requires to use the same free bands for its network expansion being licensed spectrum is limited and expansive. LTE…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Telecommunications (TEL))
Open AccessArticle
5 Pages, 1,017 KB Download PDF

Morphological and Optoelectrical Characterization of Silicon Nanostructures for Photovoltaic Applications

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 1, Page # 45–49, 2019; DOI: 10.25046/aj040106
Abstract:

Metal (silver)-Assisted Chemical Etching (MACE) method is used to fabricate silicon nanostructures like silicon nanowires (SiNWs) and silicon nanocones (SiNCs). The morphological characterization of fabricated SiNWs has shown that 5 minutes is the optimal time of silver deposition on silicon substrate. Silicon nanocones (SiNCs) were also fabricated by etching vertical SiNWs with a AgNO3=HF=H2O2 solution.…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Multidisciplinary Materials Science (MMU))
Open AccessArticle
7 Pages, 3,216 KB Download PDF

Linear Evaluation on Weak Story Medium Rise Structures Placed in High Seismic Areas

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 173–179, 2018; DOI: 10.25046/aj030622
Abstract:

The paper shows the influence of nonbearing masonry walls for medium rise framed buildings placed at higher stories but not at the ground floor. The building studied here is a hotel that will be built in Bucharest, Romania. This is a high seismic area according to the seismic codes in force. The structure is composed…

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(This article belongs to Section Civil Engineering (ECV))
Open AccessArticle
7 Pages, 3,296 KB Download PDF

Masonry Walls Behavior in Predominant Frames Structures

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 124–130, 2018; DOI: 10.25046/aj030614
Abstract:

This was a study on the behavior of a confined masonry bearing wall in a medium height dual building. This wall had to be placed at one corner of the building. It had to be a masonry wall, not to be too stiff and drag the rigidity center too far from the building’s center. The…

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(This article belongs to Section Civil Engineering (ECV))
Open AccessArticle
10 Pages, 992 KB Download PDF

Holistic Access Control and Privacy Infrastructure in Distributed Environment

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 46–55, 2018; DOI: 10.25046/aj030604
Abstract:

This article discusses IoT security in situations whereby devices do not share the same security domains, which raises security, privacy and safety concerns. It then presents an Access Control and Privacy infrastructure for addressing these concerns in the context of distributed environments. IoT deployments allow billions of connected physical devices to collect, process and share…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
10 Pages, 2,535 KB Download PDF

Low-Dimensional Spaces for Relating Sensor Signals with Internal Data Structure in a Propulsion System

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 23–32, 2018; DOI: 10.25046/aj030602
Abstract:

Advances in technology have enabled the installation of an increasing number of sensors in various mechanical systems allowing for more detailed equipment health monitoring capabilities. It is hoped the sensor data will enable development of predictive tools to prevent system failures. This work describes continued analysis of sensor data surrounding a seizure of a turbocharger…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
10 Pages, 1,441 KB Download PDF

Numerical Simulation of One Pavement Structure of Polyethylene Terephthalate Submitted to Static Point Loads

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 478–487, 2018; DOI: 10.25046/aj030554
Abstract:

Plastic is highly polluting nowadays and is found in many disposable elements used for people. Plastic materials are disposed inadequately and large quantities of them become pollution in the ground, water, and air, affecting plants and animals. Most of the plastic is Polyethylene Terephthalate (PET) which is used in many activities. Resistance, support capacity, and…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Polymer Science (PLS))
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