Journal of Advanced Engineering and Computation

Issued quarterly (4 issues per year)

JAEC Annual Best Cited Paper Award


Announcement: 2019 JAEC Best Cited Paper Award

Journal of Advanced Engineering and Computation (JAEC) has announced JAEC Annual Best Cited Paper Award for research and review articles of the JAEC. The purpose of this award is to recognize the best-cited paper published in the past three (03) years that attracts the most citations. The quantity and quality of citations of papers are based on data from ISI and/or Scopus and/or Google Scholar that tracks the paper since its first publication.

From 2017 to 2019, JAEC has published 64 research/review papers in 3 volumes and 10 issues. Top five papers with high quantity and quality of citations have been evaluated by the Award Selection Committee.

Now, it is our pleasure to announce that Winner of 2019 Best Cited Paper Award is the paper entitled "Computational cardiovascular flow analysis with the variational multiscale methods" which is published in Volume 3, issue 2, pp. 366-405, 2019 by the authors K Takizawa*, Y Bazilevs, TE Tezduyar, MC Hsu.

Congratulation on the 2019 Award Winner.

The 2020 Award will be announced in early April 2021

Award Certificate

Click here to download JAEC flyer and share to friends More...

AIMS & SCOPE
Journal of Advanced Engineering and Computation (JAEC) is a forum for the presentation of innovative ideas, approaches, developments, and research projects in the area of advanced engineering and computation. It serves to facilitate the exchange of information between researchers and industry professionals. Multi-disciplinary topics that connect the core areas of advanced engineering and computation and its applications are also covered in this journal.

It also aims to promote and coordinate developments in the field of advanced engineering and computation. The international dimension is emphasized in order to foster international collaboration in advanced engineering and computation to meet the needs of broadening the applicability and scope of the current body of knowledge.

READERSHIP
The journal provides a vehicle to help professionals, academics, researchers and policy makers working in fields relevant to advanced engineering and computation to disseminate information and to learn from each other's work.

CONTENTS
JAEC publishes original papers, review papers, technical reports, case studies, conference reports, management reports, book reviews, notes, commentaries and news. 

Call for Papers
Issue December - 2020 (Oct 1, 2020) More...
Research Open Access
Kim-Ngan Nguyen-Thi , Ha Che-Ngoc , Anh-Thy Pham-Chau
Page(s): 162-172 in Vol 4, Iss 3 (2020)
Time cited: 0

Image enhancement is an adjusting process to make an image more appropriate for certain applications. The contrast enhancement is one of the most frequently used image enhancement methods. In this study, we introduce a new image contrast enhancement method using a link between sigmoid function and Differential Evolution (DE) algorithm. DE algorithm is performed to identify the parameters in sigmoid function so that they can maximize the measure of contrast. The experimental results show that the proposed method not only retains the original image features but also enhances the contrast effectively.

Creative Commons License

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

Research Open Access
Ming-Jui Chen , Van Tho Le , Doan Quoc Anh Nguyen , Thinh Cong Tran
Page(s): 173-180 in Vol 4, Iss 3 (2020)
Time cited: 0

To make further improvements in future WLED generation, bettering color uniformity is an important goal manufacturers desire to accomplish. One of the most common and effective methods to enhance the color homogeneity is the one focusing on improving scattering in phosphor layer which can be achieved by adding ZnO into the phosphor layer. Based on theoretical application of Mie-scattering, we compute and analyze the scattering characteristics of the diffusor particles. From the results, the ZnO particles are proven to have positive influences on the development of lighting quality. Additionally, the article analyzed and presented the effects of ZnO concentration which fluctuates from 2% to 22% on the color homogeneity. Thus, the color uniformity is influenced not only by the particle size but also by the concentration of the added ZnO. Hence, managing the color uniformity of WLEDs means controlling the size and concentration of ZnO. With the concentration of 10% ZnO, the lumen output of LEDs reaches the highest values. Meanwhile, when the concentration and size of ZnO are 14% and 500 nm respectively, CCT is reduced to the lowest value. Based on the manufacturers' requirements, the most appropriate ZnO concentration and particle size can be determined. However, if requirements include both lumen and color uniformity, the right choice is 14% concentration with 500 nm particle size of ZnO.

Creative Commons License

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

Research Open Access
Jahedul Islam , Pandian Vasant , Berihun Mamo Negash , Atulan Gupta , Junzo Watada , Anirban Banik
Page(s): 181-195 in Vol 4, Iss 3 (2020)
Time cited: 0

Optimization of well placement is one of the main difficult factors in the development process in the oil and gas industry. The well placement optimization is high dimensional, multi-modal and discontinuous. In previous research, conventional and non-conventional optimization techniques have been applied to resolve this problem. However, gradient-free optimization techniques such as genetic algorithm and particle swarm optimization which is considered as the most efficient algorithms in this area suffer from local optima. In this article, two new metaheuristic optimization techniques, namely, crow search algorithm and firefly algorithm are applied to the well placement optimization problem and their applications to maximize the net profit value are studied. To study the performance of the firefly and crow search algorithm, Eclipse and MATLAB environment are used. The proposed techniques are compared to popular established methods for optimizing well placement. Results show that the firefly algorithm is proved to be efficient and effective compared to other established techniques. However, the standard crow search algorithm is not suited to this problem.

Creative Commons License

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.


Research Open Access
Dhrubo Haque , Md Isteak Reza
Page(s): 196-206 in Vol 4, Iss 3 (2020)
Time cited: 0

This paper has aimed to investigate the slope stability for various conditions like embankment geometry, water level and soil property. The analysis has been performed by using the XSTABL program for different slope heights, slope angles and flood conditions with a fixed soil cohesion value. Since the rapid drawdown is the worst case for a particular embankment therefore, the analysis has been further performed with different cohesion values. From this investigation it has been noticed that the increase of cohesion of soil can increase the stability to a great extent. All the analysises have been performed for twenty bore logs. It has been found that the underlying soil affects the stability of slope as the failure surface intersects the soil of this region. It has been also observed that the loose, liquefiable sandy soil decreases the stability while the stiff soil with sufficient cohesion value stabilizes the slope of embankment.

 Creative Commons License

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

 

Research Open Access
Michal Bukáček
Page(s): 207-217 in Vol 4, Iss 3 (2020)
Time cited: 0

The most common aim of computer game optimisation is to find the shortest path within a game or to solve a problem of a travelling salesman within a small group of cities. This article deals with the possibilities of comparing the ascertained solutions of a given problem of human intelligence and evolutionary algorithms. Human intelligence is represented by mobile game players programmed for the Android operating system, by their conduct during playing the game, and by the achieved the results. Evolutionary algorithms are represented by differential evolution. The best possible parameter estimation will be sought and compared with the player's results. The goal is to nd parameter estimation of an equal or better quality in comparison with results of human players. Another task is to verify whether this setting is suitable for all mazes and whether people or the differential evolution are better at searching.

Creative Commons License

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

Research Open Access (1535 views since : Sep 30, 2019)
Du Dinh-Cong , Linh Vo-Van , Dung Nguyen-Quoc , Trung Nguyen-Thoi
Page(s): 452-463 in Vol 3, Iss 3 (2019)
Time cited: 0

Modal kinetic energy (MKE) feature has been mostly employed for optimal sensor layout strategies; nevertheless, little attention is paid to use the feature to the field of structural damage detection. The article presents the extensive applicability of MKE change ratio (MKECR), a good damage sensitive parameter, to damage localization and quantification of laminated composite beams. The formulation of the parameter is based on the closed-form of element MKE sensitivity. The performance of the offered damage detection method is numerically verified by a clamped-clamped composite beam and a two-span continuous composite beam with different hypothetical damage scenarios. The influence of incomplete mode shapes, various noise levels as well as damage magnitudes on damage prediction results are also investigated. The obtained results from these numerical examples indicate that the offered method reliably localize the actually damaged elements and approximately estimate their severities, even under incomplete measurements at a high noise level.


Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

 

Research Open Access (1488 views since : Nov 30, 2017)
Thao Nguyen-Trang , Long Vu-Hoang , Trieu Nguyen-Thi , Ha Che-Ngoc
Page(s): 123-133 in Vol 1, Iss 2 (2017)
Time cited: 0

Tax consulting service is one of various professional consulting services and is interested to study by many researchers. Nevertheless, this issue has not been interested to research in Vietnam. This paper performs confirmatory factors analysis (CFA) and structural equation modeling (SEM) to identify the factors influencing the intentions of using tax consulting services of firms in Ho Chi Minh city, Vietnam. Specifically, this paper finds that the intentions depend on the “attitude toward the behavior” and “replacement”. In addition, through Chi-square test, it can be proven that the intentions also depend on type of firms and whether they have ever used tax consulting service or not. Based on the obtained results, the discussion and recommendation are also proposed.


Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Research Open Access (1363 views since : Jun 8, 2017)
Jaroslav Pokorny
Page(s): 04-17 in Vol 1, Iss 1 (2017)
Time cited: 2

Comparing graph databases with traditional,e.g., relational databases, some important database features are often missing there. Particularly, a graph database schema including integrity constraints is mostly not explicitly defined, also a conceptual modelling is not used. It is hard to check a consistency of the graph database, because almost no integrity constraints are defined or only their very simple representatives can be specified. In the paper, we discuss these issues and present current possibilities and challenges in graph database modelling. We focus also on integrity constraints modelling and propose functional dependencies between entity types, which reminds modelling functional dependencies known from relational databases. We show a number of examples of often cited GDBMSs and their approach to database schemas and ICs specification. Also a conceptual level of a graph database design is considered. We propose a sufficient conceptual model based on a binary variant of the ER model and show its relationship to a graph database model, i.e. a mapping conceptual schemas to database schemas. An alternative based on the conceptual functions called attributes is presented.

 

Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Research Open Access (1282 views since : Dec 31, 2019)
Ravi Teja Velpula , Barsha Jain , Ha Quoc Thang Bui , Hieu Pham Trung Nguyen
Page(s): 551-588 in Vol 3, Iss 4 (2019)
Time cited: 0

III-nitride nanowire-based light-emitting diodes (LEDs) have been intensively studied as promising candidates for future lighting technologies. Compared to conventional GaN-based planar LEDs, III-nitride nanowire LEDs exhibit numerous advantages including greatly reduced dislocation densities, polarization fields, and quantum-conned Stark effect due to the effective lateral stress relaxation, promising high-efficiency full-color LEDs. Beside these advantages, however, several issues have been identified as the limiting factors for further enhancing the nanowire LED quantum efficiency and light output power. Some of the most probable causes have been identified as due to the lack of carrier confinement in the active region, non-uniform carrier distribution, electron overflow, and the nonradiative recombination along the nanowire lateral surfaces. Moreover, the presence of large surface states and defects contribute significantly to the carrier loss in nanowire LEDs. Consequently, reported nanowire LEDs show relatively low output power. Recently, III-nitride core-shell nanowire LED structures have been reported as the most efficient nanowire white LEDs with a record-high output power which is more than 500 times stronger than that of nanowire white LEDs without using core-shell structure. In this context, we will review the current status, challenges, and approaches for the high-performance IIInitride nanowire LEDs. More specifically, we will describe the current methods for the fabrication of nanowire structures including top-down and bottom-up approaches, followed by characteristics of III-nitride nanowire LEDs. We will then discuss the carrier dynamics and loss mechanism in nanowire LEDs. The typical designs for the enhanced performance of III-nitride nanowire LEDs will be presented next. The color-tunable nanowire LEDs with emission wavelengths in the visible spectrum and phosphor-free nanowire white LEDs will be finally discussed.


Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

Research Open Access (1211 views since : Dec 31, 2019)
Faiza Zaamoune , Tidjani Menacer , René Lozi , Guanrong Chen
Page(s): 511-522 in Vol 3, Iss 4 (2019)
Time cited: 0

In this paper, hidden bifurcation routes to multiscroll chaotic attractors generated by saturated function series are explored. The method to nd such hidden bifurcation routes (HBR) depending upon two parameters is similar to the method introduced by Menacer, et al. (2016) for Chua multiscroll attractors. These HBR are characterized by the maximal range extension (MARE) of their attractors and coding the appearance order of the scrolls under the control of the two parameters. Moreover, these HDR have interesting symmetries with respect to the two parameters. The novelty that this article introduces, is firstly the paradigm of MARE and the formula giving their approximate value depending upon parameters p and q, which is linked to the size of the scrolls; secondly the coding of the HBR which is dened for the first time including the basic cell; and thirdly unearthing the symmetries of these routes, allowing to obtain their coding without any numerical computation.

Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

Research Open Access (1205 views since : Nov 30, 2017)
Thi Phuong Thao Nguyen , Doan Quoc Anh Nguyen , Miroslav Voznak , Van Tho Le
Page(s): 87-94 in Vol 1, Iss 2 (2017)
Time cited: 3

Enhancement of the color uniformity, the lumen output of the multi-chip white LED lamps (MCW-LEDs) at high color correlated temperature is a big challenge for researchers. However, an innovative LED lamp designed with a phosphor compounding, which combines (La,Ce,Tb) PO4:Ce:Tb (LaTb) green phosphor with YAG: CE yellow phosphor, is proposed as an optimal solution to this requirement. Index, using LaTb green phosphor into MCWLEDs could bring a superior optical performance for MCW-LEDs. It is found that the lumen output of this new MCW-LED at a high color temperature of 8500 K significantly improves up to 1600 lm compared to MCW-LEDs without LaTb phosphor. The simulation results demonstrated that the CCT deviation sharply decreases from 9000 to 1000 at the LaTb concentration range from 0 to 1.8 %, while the Color Rendering Index ability (CRI) and the Color Quality Scale (CQS) slightly decrease. To obtain the highest lumen output and the best color uniformity, the particle size range within 6 - 8 µm should be suggested.

 

Creative Commons License
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.