Thu Dau Mot University Journal of Science


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27 papers


This study deals with the stiffness design of geometrically nonlinear structures using topology optimization. Bi-directional Evolutionary Structures Optimization (BESO) is employed to implement the design process. The geometrically nonlinear behavior of the structures are modeled using a total Lagrangian finite element formulation and the equilibrium is found using a Newton-Raphson iterative scheme. The topology optimization of linear and nonlinear modeling are implemented. The sensitivity of the objective function is found with the adjoint method and the optimization problem is solved using BESO’s update method. Objective function of complementary work is evaluated. A special technique called the continuation method is applied to solve the instability of nonlinear structure optimization. ANSYS APDL is also used to do FEA of optimal topology to verify the effectiveness of geometrically nonlinear modelling. The results show that differences in stiffness of structures optimized using linear and nonlinear modelling is generally small but it can be large in some cases, especially structure highly involving buckling behaviour.
For more than a hundred years, the people of Kien Giang have maintained the celebration of Nguyen Trung Truc’s death anniversary in order to pay tribute to this “Born as a general, die as a god”. According to the movement and development of history, the death anniversary of Nguyen Trung Truc must also have certain changes, to match the content anh nature of the historical – cultural time. This is an important issue, helping to better identify the regular adaptations and changes of national cultural values. However, to date this issue has not been studied. The purpose of the article is to analyze and clarify the process of organizing the death anniversary celebration and its changes, contributing to explaining the adaptation and regular change of cultural values.
The Southeast region, in prehistory and protohistory, established the space of Dong Nai archeological culture. Since the 16th to 17th centuries, the Southeast had been discovered by the Vietnamese people, in which they established sovereignty and administrative structure. Over three centuries of formation and development, the Southeast region has created many changes in geographic names and administrative structures as required by the historical context of each period. This article presents the overview of the administrative restructuring process in the Southeast region in some important historical milestones during the development process hereof. With the presentation of administrative structures in the Southeast region, the article contributes to systemizing the historical periods of formation and development of the region. It also opens further dialogues for the study of historical and cultural characteristics of the Southeast region.
In the context of economic integration along with the development of industrial parks, enterprises are always innovating modern and advanced technology, improve the quality of products of enterprises to increase competitiveness in international economic integration. This study assesses the progress of completion, the inadequacies after applying the drawing management process in iso room age Vietnam and the management storage regulations of the enterprise, thereby making flawed comments and propose solutions in the management process after being put into practice at the company. Use interdisciplinary research methods of archiving, drawing records, survey results and speaks to the importance of managing and storing drawings in the mechanical engineering industry.showing the level of completion and outstanding shortcomings of the process. The survey results provide the basis for the shortcomings, which need to be improved in the process and thorough remedies to improve the quality of technical drawing management process
High power losses are a great concern in operating electric distribution system. Reconfiguration is one of the most economic approaches for reducing power losses of the system. This study suggests a technique for dealing with the distribution system reconfiguration problem based on a water cycle algorithm for minimizing active power loss. The water cycle algorithm is a recently developed metaheuristic algorithm that inspired the process of water circulation for solving optimization problems. The effectiveness and performance of the water cycle algorithm were tested on the 33-node and 69-node systems. The water cycle algorithm was applied to determine the best configuration of the distribution system for active power loss minimization. The results yielded by the water cycle algorithm were compared with other optimization algorithms in the literature and the comparisons showed that the water cycle algorithm obtained good quality of solution for the problem. Therefore, the water cycle algorithm is the potential method for the distribution system reconfiguration problem.

An oviervew about the process of novel theory in Vietnam

By Nguyen Thi Kim Tien, Nguyen Thi Hai Hang
Published online 15/12/2021
DOI: 10.37550/tdmu.EJS/2021.04.255
The novel is a constantly changing and evolving genre when it shows the width and depth in the reflection of reality, opening up endless dialogues about the value of human existence in its flexible structural framework. The article exploits, points out and evaluates theoretical achievements of the twentieth century novel. From this evaluation, the text identify the theoretical development trend of this genre in the twenty-first century, placed in the movement correlation, movement of contemporary Vietnamese literature seen from creative writing and receptive innovation.
In Vietnam, deviant behaviour in adolescents is increasingly popular and gradually becomes a major concern of the whole society. The purpose of this study is to identify Factors affecting deviant behavior of Vietnamese adolescents, including: Nature of adolescence (Biology, Intelligence and Cognitive functions) and Nurture (Family atmosphere, Education environment, Media and technology, Peer Pressure, and Religion and Politics). 426 survey samples were collected to serve the data analysis process as well as all hypotheses were examined by using STATISTIC 10 ver., LISREL 8.8 with Covariance Matrix, and LISREL model. This research showed that Nature of adolescence, Family atmosphere, Education environment, Social media and technology, Peer pressure have significant influence on deviant behavior of adolescents in Vietnam. The research also indicated that deviant behavior of Vietnamese adolescents is not affected by Religion and politics. The study also makes suggestions to improve morality and foster personality for adolescents in Vietnam, makes a small contribution to the country's further development.
The process of industrialization, modernization and the rapid development of industrial revolution 4.0 are creating new development opportunities for the Southeast in general and Binh Duong in particular, but also setting many challenges. In order to take advantage of opportunities and overcome challenges, the role of the contingent of intellectuals in Binh Duong province is huge. Through the assessment of the current status of the development of the intellectual contingent of Binh Duong province, the article proposes basic views and major solutions to continue developing this team in the future to meet the requirements of industrialization and modernization of the country.
Research and assessment of sludge management in Thu Dau Mot wastewater treatment enterprise. The composition of the sludge depends on the composition of the wastewater, the wastewater treatment process and the sludge treatment process. The most common non-toxic organic compounds include materials of plant and animal origin such as proteins, amino acids, sugars, fats ... compounds containing N, P... Toxic organic compounds include compounds of PHA (Poly-nuclear aromatic hydrocarbons), alkyl phenols, polychlorinated biphenyls (PSBs) organochlorine pesticides, phenols, chloro-benzenes ... Heavy metals such as: Zn, Pb, Cu, Cd, Ni, Cr, Hg, As… (in the range from 1ppm to 100ppm). Some of these compounds can be toxic to humans and animals. Therefore, it is necessary to control the concentration of heavy metals in the sludge before disposal or reuse. Harmful microorganisms such as pathogenic bacteria, viruses and protozoa together with parasitic helminths can increase the potential harm to human, animal and plant health. Inorganic compounds such as silicates, aluminates, calcium and magnesium compounds.
In the last days of 2019, when the whole world was waiting for the moment to enter a new decade, a strange kind of unexplained pneumonia appeared in Wuhan city, China. From the little information as well as attention initially, this epidemic has turned into a pandemic worldwide. The quick-fire coronavirus spread and the response of different countries to it highlight immediate concerns about public health and have a significant impact on the evolving world order and the values that underpin it. This pandemic is unprecedented in its capacity to take advantage of modern globalization, allowing for massive disease spread at a surprising speed. It can say that COVID-19 is an additional blow to the vision and practices of the globalization process that is already under strain. Using the qualitative methods research and conceptual approach, the article, on the one hand, tried to analyze the challenges that globalization is facing because of COVID-19. On the other hand, we want to affirm that globalization will still be an irreplaceable trend in the future.
To explain transnational marriage between Vietnamese brides and Taiwanese, Korean grooms. The author will figure out and discuss some issues related to this type of marriage such as divorce and one of concerning issues that Vietnamese-Taiwanese and Korean-Vietnamese children have been existing in Vietnam as ‘being abandoned’ phenomenon of transitional migration in the context of globalization. This research aims to gain an insight into accessibility to education services amongst Taiwanese-Vietnamese and Korean-Vietnamese children living with their mother and maternal family/relatives in Hau Giang by applying sociological approaches, thus to explain a modern social phenomenon emerging in the process of development and integration of Vietnam. Research subject: Accessibility to s amongst Vietnamese-Taiwanese and Vietnamese-Korean children in Hau Giang. Research objects: Mixed race children nursed/ care taken by their mother or maternal parents/relatives.
In urban development, urbanization is an important and decisive process of transformation. In the current globalization period, the urbanization of cities around the world is strongly influenced by the foreign direct investment (FDI). It is considered an important catalyst for economic growth. This paper aims to analyze the effect of FDI on sustainable urbanization in Binh Duong province by utilizing the time series data throughout 2000 - 2018, expressed through statistical and analytical methods. The research results show that FDI contributes to promoting economic, social and urban development in Binh Duong province, but it still has some limitations. The research results are also the basis for researchers and policy makers to develop orientations to attract, use and manage FDI, proposing solutions to improve the efficiency of it to urbanization in a sustainable way in Binh Duong province in the future.
An effective teacher plays a crucial role in the process of learning English as a foreign language (EFL) when students’ opportunities to English exposure outside the classroom are limited. The aim of this study was to examine professional characteristics that an effective EFL teacher should have as perceived by Taiwanese university students. A four-section questionnaire was used as a data collection instrument, and the study sample included responses from 68 senior students majoring in EFL. The results show that the three most significant characteristics of an effective teacher of English in the eyes of Taiwanese university students are not related specifically to the teacher’s knowledge of the subject or English proficiency level. Those characteristics can be attributed to any teacher, and they include providing clear grading guidelines, giving clear explanations, and preparing each lesson well. The findings may contribute valid information on college students’ expectations of EFL teachers in the Asian educational context and help make the language learning process more effective.
The paper demonstrates the role of globalization and localization in the process of Vietnam’s interaction and integration with other cultures, causing changes in Vietnamese language. Globalization is defined as the free movement of goods, services and people of the worldwide scope across the borders of countries, resulted from the opening up of the global economy and advances of technologies. The increasing interconnectedness and integration of the economies of the world furnish more influx of information among countries which do not have anything in common and Internet and social media well contribute to such spread. Not only the pros but the cons of globalization are used to explain the part of localization as the entire process of adapting a product or content to a specific location or market. The paper indicates localization as the Vietnamese people’s endeavor to adapt Vietnamese language to the world while protecting and enhancing the national characters. The differences between localization and globalization are analyzed to demonstrate the value and requirements of localization in the present time. The influences of Sino-Vietnamese and French language are also found out as evidences of the phenomena. The changes of Vietnamese language from globalization and localization are illustrated with devices, ideas and images referring to the objects, actions or ideas.
The study reflects generally the process of industrialization and modernization in the Southeast provinces and cities of Vietnam (2010 - 2020) and the results achieved in that process. From that practice, the article has summarized some experiences on industrialization and modernization in the Southeast region, contributing to bringing Vietnam to complete the goal of industrialization and modernization, basically become a modernity-oriented industrial nation.
The wastewater treatment plant is an extremely important infrastructure to ensure the quality of life, water use of human life, and other ways to ensure water quality for the natural environment. In the operation of it, there are always potential hazards affecting the health of the workers working in the factory. The study was performed using the Semi-quantitative risk assessment method to calculate the values of operational risks in the water treatment plant (WWP). The results of the study obtained 18 high potential hazards that may lead to the present in the water treatment process. The hazards were the leakage of deodorizing towers and the generation of toxic emissions of dead microorganisms that have the highest value with a risk scale of 20 points- frequent impacts on employees. The study has also identified the dangers present in WWP and this will be the premise for mitigating solutions for problems occurring at its.

Monitoring supplied domestic water quality at Thu Dau Mot water supply enterprise

By Nguyễn Thanh Quang, Nguyễn Đặng Ngọc Giàu
Published online 14/03/2021
DOI: 10.37550/tdmu.EJS/2021.01.148
The current status assessment research of water use and quality of supplied domestic water in Thu Dau Mot city, Binh Duong province, as well as the clean water use situation of the local people. Sampling and assessment of the quality of supplied water at Thu Dau Mot Water supply enterprise. The water treatment process here is strictly conducted to ensure stability, constant pressure, inlet and outlet water flow. The analysis results of physical and chemical parameters of water quality at Thu Dau Mot Water supply enterprise show parameters within the allowable limits of water standards for domestic use QCVN 02: 2009/BYT and domestic water QCVN 01: 2009/BYT. However, during the water treatment process in the rainy season, it is time consuming and costly for the use of many chemicals in the treatment process, as high turbidity and high color temperature, low TDS, low pH, low chloride, high SS, Fe and Mn content changes in the wet season higher than in the dry season. After sampling for analysis and treatment, the output water meets the clean water standard to meet the needs of the people in Thu Dau Mot City and surrounding areas. Keywords: water quality, physical and chemical parameters, water standards, clean water.
Industrial Revolution 4.0 has become an indispensable trend in the development process of Vietnam and is increasingly applied in university education. The essence of the Industrial Revolution 4.0 is the application of technology, data science and the use of artificial intelligence for production and human life. In this impact, modern education, especially higher education, is the field most affected. Online teaching, with tools to support the teaching of the digital age, has been changing dramatically in the teaching and learning situation in universities, helping to modernize education and integrate with the world, but there are many issues that teachers and managers must consider to change teaching methods and training strategies, in order to deliver the best results. Starting from the actual situation, we propose specific and comprehensive measures to improve the teaching efficiency of Thu Dau Mot University and, to meet the needs of Vietnamese society and the development of Industrial Revolution 4.0.
This paper examines the main challenges of the processes of space and social policy change present to current urbanization trends of Taiwan. The chapter argues that one of the main challenges is economic growth, increasing integration into the global economy and making Taiwan competitive in the global economy. This process leads to the growth of large urban regions that present many challenges to the urban development in the future. In particular, the paper focuses on the most fragile areas of the extended urban spaces are the rural and urban margins, where urban activities are expanding into densely populated agricultural regions. It is argued that in these areas, local policies should be developed that adapt to local ecosystems. The paper presents lessons of interventions in this field for Ho Chi Minh, Dong Nai and Binh Duong Region for urban expansion.
Caodaism was established in the South in 1926. It has been considered as one of indigenous religions in Vietnam in the first half of 20th century. In the first days, trend of Caodaism was to develop in foreign countries through missionary campaigns. Cao Dai’s dignitaries carried out missionary task in Cambodia, France, German, China… That was why followers of Cao Dai (Cao Dai followers) lived in these countries in the early 1930s. After 1975 many people in the South emigrated to America, Australia. Many of them were Cao Dai followers. After their lives have been stabilized, they have gathered to build temples so Caodaism in foreign countries has developed strongly. The number of believers in foreign countries is about 50,000 believers. They have created connection with Cao Dai sects through many forms. In this article we mention three main contents: 1) Cao Dai followers in foreign countries: the process of establishment and development after 1975; 2) The administrative relation between Cao Dai followers in foreign countries and Cao Dai church in Vietnam; 3) Some remarks on the administrative relation. The information in this article has been completed with two research methods: in-depth interview and participate observation.

Building the environmental performance index for industrial parks

By Phong Tran, Thuy Nguyen Thi Thanh, Pham Quoc Khanh, Than Nguyen Hien
Published online 15/09/2020
DOI: 10.37550/tdmu.EJS/2020.03.067
Measuring environmental protection activities is a matter of great concern over the years. In this study, the indicators for evaluating environmental protection activities in industrial parks was built according to the PDSIR model and based on Vietnam's legal framework, including 18 main subjects and 35 indicators. The environmental performance index of industrial park (EPIIP) was established based on the multi-criteria evaluation method and the analytic hierarchy process method. The results of the study indicated that the VSIP I industrial park reached 68.95 points (relatively good level). Moreover, the results also showed that VSIP I was one of the industrial parks practicing good performance to protect environmental problems.
The study aims to investigate the possibility of processing copper metal (Cu2+) with activated carbon prepared from macadamia shell. Activated carbon is prepared from Macadamia shell by chemical agent H3PO4 with coke ratio: H3PO4 = 1:1, optimal temperature condition is 5000C and burning time is 60 minutes. Using the assumed Cu2+ metal treats materials in the laboratory with a concentration of 30ppm. The research to result ability material adsorbed Cu2+ metal achieve good performance 95.92% handle, corresponding to the concentration of Cu2+ reduced from 30 mg/l to 1.2mg/l in optimal conditions is pH = 4.5 , dosage 1.8g/l, time 30 minutes. The results showed that activated carbon prepared from macadamia husk with chemical agent H3PO4 was capable of treating copper metal in wastewater.

Using modified macadamia carbon by H2O2 as adsorbent to remove zinc (Zn2+) in wastewater

By Đao Minh Trung, Nguyen Kim Nga, Le Thi Dao, Trinh Diep Phuong Danh
Published online 15/06/2020
DOI: 10.37550/tdmu.EJS/2020.02.047
Using modified macadamia carbon by H2O2 as adsorbent to remove Zn2+ with H2O2 25% in 48 hours. The Parameters, such as pH, dosage and adsorption time affect the processing ability of modified macadamia carbon H2O2. The maximum removal efficiency of 64.52% was obtained at a pH of 4.5, the processing time is 80 minutes, dosage 1.8 g/L and an initial heavy metal concentration of 25ppm.

Assessing the competitive advantages of tourism potentials in Tuy Hoa city, Phu Yen province

By Nguyen Hien Than, Nguyen Huynh Anh Tuyet, Che Dinh Ly
Published online 15/06/2020
DOI: 10.37550/tdmu.EJS/2020.02.048
This paper presents a Quantified SWOT (Strengths, Weaknesses, Opportunities and Threats) analytical method and an analytical hierarchy process method which provides more detailed and quantified information on tourism potential in Tuy Hoa city. Quantified SWOT analysis was used to assess the competing strength of Tuy Hoa’s tourism potential with other places. The results of the study presented that Tuy Hoa city has many advantages of beautiful natural landscapes, nature, rivers and mountains. The results of the comparing value of internal and external factors of Tuy Hoa’s tourism potential indicated it under high competitive pressure from neighbor destinations such as Phan Thiet, Hue, Nha Trang and Da Nang. Tuy Hoa’s tourism potential was lower than that of neighbor cities but it has more attractive tourism features.

Publication Information

Publisher

Thu Dau Mot University, Viet Nam

Honorary Editor-in-Chief and Chairman of the Editorial Board

Assoc. Prof. Nguyen Van Hiep

Deputy Editor-in-Chief

PhD. Trần Hạnh Minh Phương
Thu Dau Mot University

Editorial Board

Prof. Tran Van Doan
Fujen University, Taiwan
Prof. Zafar Uddin Ahmed
Vietnam National University Ho Chi Minh City

Prof.Dr. Phillip G.Cerny
The University of Manchester, United Kingdom
Prof. Ngo Van Le
University of Social Sciences and Humanities (VNU-HCM)

Prof. Bui The Cuong
Southern Institute of Social Sciences​​​​​​​
Prof. Le Quang Tri
Can Tho University

Assoc. Prof. Nguyen Van Duc
Animal Husbandry Association of Vietnam
Assoc. Prof. Ted Yuchung Liu
National Pingtung University, Taiwan

PhD. Anita Doraisami
Economics Monash University, Australia
Prof. Dr. Andrew Seddon
Asia Pacific University of Technology & innovation (APU)

Assoc. Prof. Le Tuan Anh
Thu Dau Mot University
Prof. Abtar Darshan Singh
Asia Pacific University, Malaysia

Prof.Dr. Ron W.Edwards
The University of Melbourne, Australia
Assoc. Prof. Hoang Xuan Nien
Thu Dau Mot University

PhD. Nguyen Duc Nghia
Vietnam National University Ho Chi Minh City
PhD. Bao Dat
Monash University (Australia)

PhD. Raqib Chowdhury
Monash University (Australia)
PhD. Nguyen Hoang Tuan
Thu Dau Mot University

PhD. Nguyen Thi Lien Thuong
Thu Dau Mot University

Assistant

Nguyen Thi Man
Thu Dau Mot University