Thu Dau Mot University Journal of Science


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61 papers


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.
Applying first-principles calculations, the investigation of the geometrical and electronic properties of Pr adsorption armchair silicene nanoribbons structure has been established. The results show that the bandgap doped Pr has been changed, which is the case for chemical adsorption on the surface of ASiNRs; this material became metallic with the peak of valance band contact fermi level. Moreover, the survey to find the optimal height 1.82 Å of Pr and 2.24 Å bond length Si-Si, and Si-Si-Si bond angle 108005’, energy adsorption is -7.65 eV, buckling is 0.43 Å with structure stability close to the pristine case, has brought good results for actively creating newly applied materials for the spintronic and optoelectronics field in the future.

Analysis of the effects of nutrition and sports on height and weight

Nguyễn Thị Kim Ngân, Huỳnh Thị Hồng Nhung, Lê Thị Thùy Trang, Nguyễn Thị Xuân
This study was conducted on a group of male and female students of age range of 6-11 years at an elementary school. In this paper it is tried to analyze the effects of nutrition and sports on height and weight of male and female students. The result showed that these factors have an impact on students’ height and weight, and there were the difference between groups doing sports regularly and rarely, also among groups of different nutrition.
Traditional fossil energy sources are increasingly exhausted, leading to the need for mankind to exploit alternative energy sources; and solar energy can be viewed as infinite. Solar photovoltaic and its applications are increasingly widely studied. However, due to its nonlinearity and unstable nature, high technology is required to achieve good conversion efficiency. One of the techniques to optimize solar cell efficiency is to use the Maximum Power Point Tracking algorithm (MPPT) and P&O is a relatively easy algorithm to implement. This article will present some problems about photovoltaic cells, power converters in solar power systems and using PSIM software to simulate an independent solar system with several harvesting solutions for solar power and compare the efficiency of them.
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.
In order to have an overview of the current quality of youth labor and its readiness for the emergence of the fourth industrial revolution (or Industry 4.0), measuring the understanding of students about the Industry 4.0 in the context of Vietnam's digital economy is essential. As the young's perception in the present-day context can be seen as a crucial manifestation to evaluate their awareness levels on how this revolution impacts their joining the labor market. In addition, the young’s awareness is an important information source in orienting their own behavior accordingly, which is also an indication of the level of their willingness to adapt to the digital age. As the result of previous qualitative and quantitative surveys, this article addresses the awareness characteristics of young people, thereby exploring their capacity for self-assessment about risks or career opportunities in the context of Industry 4.0.
With the development of information technology, many applications of robots are increasingly being applied to support research, learning, and teaching. This paper mainly investigates the modeling and simulation of a robotic arm with 3 degrees of freedom (dofs) for different applications. First, Kinematics and dynamics model of the robot based on the standard Denavit Hartenberg (D-H) modeling method, where the forward kinematics of robot is analyzed and computed to obtain by using the inverse kinematics, and then the solution of the robot dynamics is derived. Second, a CAD model of the robot is designed on CATIA software to convert to MapleSim software to simulation and control. Final, numerical simulation is presented to display results. This work provides a potential basis for the realization of the robotic arm in the industrial, education, and research field, which is of great significance for improving manufacturing efficiency and support teaching and research in the robot field.
Corrosion of the bottom of the petroleum tank may lead to a product leak that could cause a fire or explosion resulting in damage to people and the environment, therefore the test of tank bottom corrosion is necessary to be conducted periodically to prevent the occurrence of the above problems. In non-destructive inspection, the Magnetic Flux Leakage (MFL) method relies on the variation of fluxes caused by defects on the surface of materials to detect corrosion, pitting, or imperfections, which is proved quite effectively with low cost. The project was implemented to develop a prototype of the MFL bottom detection device based on the research results in the world to improve corrosion survey capacity in industrial equipment, as well as to improve the expertise in the Research Team of electronics and automation in the fields of magnetic fields and sensors. As a result, an MFL model using permanent magnets and Hall sensors were fabricated. Survey experiments showed that the machine could detect corrosion defects up to 20% of steel wall thickness in the scanning speed range from 500 mm/s to 1130 mm/s. However, to meet the actual survey needs, the team must continue to improve the device in terms of sensitivity, scanning speed, the ability to operate automatically or semi-automatically, and register for a fire safety inspection.
One of the most problematic areas for foreign language learning is collocation. It is often seen as a seemingly insurmountable obstacle to the attainment of native like fluency. The following study takes an approach as a linguistic one by analyzing semantic features of the English collocations with „make‟, which is widely used in the international criminal documents. The thesis analyzing their semantic features according to the categorization of the English collocations with „make‟ used in the international criminal documents in order to find out the difficulties for learners and translators in dealing with these collocations as well as to impose the suggestions for these difficulties.
This article introduces the general issues and benefits of simulation in teaching and scientific research. Thereby, the author illustrates by making 3D drawings, assemblies, videos simulating machine structures for teaching Theoretical mechanics, Construction machine subjects and the author's studies in the mechanical field. The application of simulation in teaching is to create videos by using Solidworks software, simulating the operating principle of machine structures. After that, show the videos to the students, excite them and make the lesson lively. And the simulation application in scientific research is mentioned as the way to use 3D drawings and simulation videos to preview the research results, promptly fix the wrong places. Since then, the research is quick, cost reduction is not worth it. The results of this paper are to point out the unique benefits that contribute positively to simulation in teaching and in scientific research.
Kiểm tra đánh giá kết quả học tập của người học là một khâu quan trọng trong quá trình dạy học, nhằm xác định mức độ học tập của người học có đạt được theo mục tiêu của chuẩn đầu ra môn học hay không. Nếu việc kiểm tra đánh giá được thực hiện chính xác và minh bạch, thì đó sẽ là những căn cứ để điều chỉnh phương pháp dạy học và có tác dụng khuyến khích người học tích cực học tập. Theo xu hướng hiện nay, người dạy cần phải phổ biến các tiêu chí đánh giá của môn học cho người học biết để người học có thể chủ động trong quá trình học tập, lựa chọn cách tiếp cận môn học phù hợp với các tiêu chí đánh giá, từ đó có thể đánh giá mức độ hiểu rõ môn học của chính người học.
The Southeast plays a very important role in Vietnam’s economic development. Despite a high concentration of social scientists in the Southeast region, there remains a paradox that the Southeast culture has not been sufficiently researched into. Applying the method of cultural zoning based on the changes of the three dimensions Subject – Space - Time developed by the author, the article concludes that the Southeast is a separate cultural zone besides the Southwest and lists some typical characteristics of the Southeast in terms of cultural elements (focusing on the organizational culture) and the system of cultural personality characteristics of Vietnamese people in the Southeast. An analysis of the Human Development Index (HDI) of the Southeast shows that this development is unbalanced and unsustainable. To achieve balance and sustainability, more investment must be made on the culture and the people; community-village type behaviors should be replaced by community-society type behaviors; and the urban way of living, the urban culture and good urban citizen character should be promoed while limiting the rural/agricultural lifestyle and characteristics.
In 2014, Binh Duong has 2.885 the Khmer people, being the second largest ethnic minority compared to the Hoa people. They have contributed to the multi-ethnic culture of Binh Duong. Hundreds of works on the Khmer in the Mekong Delta considered their culture as a typical of Theravada Buddhist culture in Vietnam but this proposition is not suitable for the Khmer community in An Binh, Phu giao district who is this object of this study. By qualitative data sources from in-depth interviews, participant observations and approach to the historical particularism, this study documented the cultural characteristics of the Khmer in An Binh and analyzed the factors that make culture of the Khmer in An Binh different from the culture of the Khmer in the Mekong Delta. Natural conditions and socio-historical context make the cultural practices of the Khmer in An Binh more similar to the culture of the ethnic groups in the Central Highlands than the Khmer culture in the Mekong delta, especially, customs and folk beliefs.

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