Thu Dau Mot University Journal of Science


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42 papers


In recent times, there has been a rapid surge in the advancement of technologies associated with Unmanned Aerial Vehicles (UAVs), particularly in the domains of sensors, networking, and processing. Consequently, substantial investments from both governments and industries have been directed towards the exploration of UAVs, aiming to enhance their performance for secure and dependable deployments. The evolution of design methodologies and the exploration of UAV systems have transitioned from single UAV applications to encompass multi-UAVs and cooperative UAV systems. These systems necessitate a heightened level of coordination and collaboration to execute tasks, demanding innovative networking models, approaches, and mechanisms tailored for highly mobile nodes, encompassing numerous intricate parameters and constraints. The present paper provides comprehensive insights and conducts a meticulous examination of UAV communication protocols, networking systems, architectures, and applications. Furthermore, it delves into UAV solutions while underscoring critical technical challenges and unresolved research issues that warrant further investigation and dedicated research and development endeavors. In this paper, we study some problems and solutions for The Command and Control (C2) aspect of UAV communication systems. We also give some directions for research in near future.
Industrial robots have become one of the effective support tools for human labor. Robots are a solution to replace humans in repetitive tasks and in environments where humans cannot work. Robots have become one of the factors responding to the Industrial Revolution 4.0. Automatic control devices require high-precision control quality. Therefore, in this paper, we focus on researching controlling the position of the actuator accurately based on the PID algorithm. First, we study the forward and inverse kinematics of a three-joint robot. Second, we design the robot model on inventor software and transfer the 3d model in inventor software to Matlab Simmechanics. Third, modeling robot model on Simulink to simulate and evaluate the results achieved
This article's primary goals are to provide design drawings, a description of the structure, an explanation of the working principle, and a kinematics calculation for text stamping machines. This machine has an electric motor, a gear-pinion transmission, a rotating disc-rod-slider mechanism and a hinged four-way mechanism. This is a simple, reasonably priced and useful device for administrative agencies' workstations. An ordinary administrative worker can also operate it. This device is about the same size as a laptop or printer. It operates by clamping the seal, stamping constantly onto A4 pages. The stamping speed can also be changed by varying the shaft speed of the electric motor. It is convenient, but it also has the disadvantage of requiring someone to put the paper in and take it out. The box frame of this machine is made of plastic or wood. Some transmission components are made of steel. When this machine works, the force applied to it and the force caused by it are very small, so in general it is very simple and safe. Keywords: Gear transmission – rack, rotating disc mechanism – connecting rod – slider, four-hinged mechanism, stamping machine.
In this topic, we applied the Fmincon function to the optimum question when choosing the structure of a 7-bar bearing steel bearing, divided into groups of the same size, including group 1 (1, 2 bars), group 2 (3, 4, and 5 bars), and group 3 (6, and 7 bars) with three fixed head points and two bearing points. Using the Matlab software code, we have identified the structures of each group of steel bars corresponding to the radius of 1.564 cm, 3.509 cm, and 4.724 cm, respectively. Through this, we can identify the 1, 2, and 3 bars that are resistant to traction; the 3, 5, 6, and 7 bars that are subject to compression; and the 4 bars alone that are not subject to the action of the force. The results show that using the optimal method, we choose the different sizes, thicknesses, and volumes of the pipe so that it best suits the technical requirements of the paper, to avoid waste of raw materials, affecting the economic cost.
With the development of information technology and smart technology to meet the Industrial Revolution 4.0, and to meet life requirements. Automatic control devices require high-precision control quality. Therefore, in this paper, we focus on researching the Sliding mode controller to improve the control quality compared to the PID controller. First, the sliding mode control is designed using the Lyapunov algorithm. Next, the process of simulating the position signal of a DC motor with a PID controller is compared with a sliding mode control to prove the effectiveness of the proposed controller.
Thu Dau Mot University is one of the main public education institutions in the South-Eastern region of Vietnam. The vision of the university is to adopt innovative teaching methodologies to improve education quality and attract more students. Thu Dau Mot University envisions becoming a smart university as one of its long-term strategies in order to be aligned with the smart city orientation of Binh Duong province. The paper evaluates the potential of buiding Thu Dau Mot university model by SWOT analysis. It’s results will serve as a reference for Thu Dau Mot university’s leaders to identifying where are the strengths, the weakenesses, the opportunities and the threats in their process of smart university development. Finally, the paper has provided recommendations to Thu Dau Mot university for becoming a smart university.
Culture plays an important role in shaping the perceptions, beliefs, and experiences of refugees as they navigate decisions and actions in a new society. Based on an analysis of 88 oral history interviews conducted by the Vietnamese American Heritage Foundation (VAHF) with Vietnamese refugees in the US after the war, this paper examines the relationship between culture and social integration, particularly the cultural values that Vietnamese refugees have chosen and promoted to help them adapt quickly and successfully in the new society. Using a thematic analysis method, cultural values such as self-effort, a studious tradition, sacrifice, and intergenerational responsibility help Vietnamese refugees improve their socio-economic status after a period of settlement in the U.S. The stories specifically illustrate how Vietnamese people have applied cultural values to social integration strategies, establishing connections between culture and economic opportunities within the socio-economic conditions of the United States.
ABSTRACT This paper analyzes the security performance of underlay cognitive energy-harvesting relay radio networks (UCEHRRN) through the Monter-Carlo simulation results. The results clarify the influence of critical operating parameters on the security performance of the system. Furthermore, the security capabilities of UCEHRRN have been compared with those of the live transmission system. Moreover, many results show that the security performance of the system is significantly improved. Analysis of the results also shows that UCEHRRN is especially effective when the direct transmission system cannot achieve security due to objective reasons such as path loss, severe fading, and shadowing.
This paper aims to apply FMEA (Failure Mode and Effect Analysis) tool in the wood production process of Minh Duong Wood Company. In this study, the process evaluation indicators according to FMEA were analyzed such as failure severity - S (Severity value), failure frequency - O (Occurrence number), error detection ability. failure - D (Detection number), risk priority factor - RPN (Risk Priority Number). The research results show that the failure modes of the process have been systematically and comprehensively identified. Fault types are ranked as priority for improvement and corresponding solutions have been proposed.
This paper aims to identify the English-learning motivation of Thu Dau Mot University’s students. Based on the questionnaire, the data for analysis were collected from more than 100 students of different majors studying non-majored English at Thu Dau Mot University’s Foreign Language Center. The findings show that students have relatively positive learning motivation. In the relationship between learning achievement and motivation, the motive that comes from the students’ desire to get a better job occupies 58.4% of all the students surveyed because they believe it is essential and decisive to ensure their future income (applying for a job to earn money), and motivation to integrate into modern world life (because English is a global language: 40.4%) are the factors affecting students’ achievement.
Binh Duong is a province in the Southeast region. It has a long history of growth and numerous noteworthy historical and cultural values. This paper provides a summary of the cultural and historical significance of Binh Duong Province during the prehistoric, land exploration, and settlement phases. It discusses population, administrative structure, social structure, economic traits (agriculture, handicrafts, commerce), and social culture throughout the various eras (prehistory, settlement phase, Nguyen dynasty). The findings demonstrate that Binh Duong not only has a rich history with numerous economic and cultural assets, but also point to possible research avenues for safeguarding and advancing moral principles in the construction and development of Binh Duong province today and in the future.
Almajiri are students’ in an ancient Islamic system of teaching. This paper assesses food security, personal hygiene, living condition, and violence in Almajiri. Survey using questionnaire and analysed descriptive statistics, and x2 at p < 0.05 were used. Most schools were donated (66.7%), and minority (33.3%) were self-owned. Schools were built by zinc (33.3%), mud (33.3%), and modern (33.3%). There are urinals in all the schools (100.0%), overcrowding (100.0%), 66.7% have windows and doors, (33.3%) have no windows and doors. 66.% of the schools have mats for sitting, 33.3% have chairs. Risks found are: open defecation (33.3%), and nearby water (66.7%). Majority of students stay for 4 months before returning home (66.7%), and significant portion of them return after graduation (33.3%). Pertaining personal hygiene 66.7% of the students’ wear shoes, 33.3% didn’t wear; 66.7% have cleaned clothes, 33.3% dirty clothes, there was no water at (66.7%) of the schools, 33.3% have water. 66.7% wash hands after toilet, none wash hands before eating. On food security for Almajiri, 66.7% eat once, 33.3% eat twice. They eat Tuwo (33.3%) Gari, Tuwo (33.3%), and unspecified food (33.3%); source of food includes begging (33.3%), external labor (33.3%), and home (33.3%). Types of violence encountered are: weapon use (33.3%), fight (33.3%), and flogging (33.3%). Majority (66.7%) like western education, and (33.3%) replied no. All students are feeling their condition psychologically; some are at SS1 (33.3%), JSSI (33.3%), and (33.3%) never attend western school. Poor health determinants exist in Almajiri students in Sokoto.
Premarital sex is one of the issues that female migrant workers currently face. This increases the risk of sexual and reproductive health issues among this vulnerable group. The article's goal is to comprehend and explain the attitude of female migrant workers regarding premarital sex while also analyzing the factors that influence their attitudes toward this issue. The theories of social control and migration are the foundation for this objective. The combined approach used in this paper collects quantitative data from 420 female migrant workers and qualitative data from seven female migrant workers who participated in in-depth interviews. According to research findings, female migrant workers are considerably more agreeable to premarital sex if both are voluntary, but they do not feel ready to discuss premarital sex with those around them. The level of education and length of residence are factors that affect how female migrant workers feel about the premarital sex concern. In order to enhance their autonomy and reduce risky sexual behaviors, we can thus propose that female migrant workers, especially those with a residence length of more than five years, should have greater reproductive health capacity, including reproductive health knowledge and skills.
The present paper was to discuss how the use of the progressive forms with stative verbs has changed in present-day English and discuss what the teachers should do to deal with this issue in English grammar teaching. The discussion of the paper was based on theoretical framework of progressive aspect and stative verbs. Data collected from three corpus-informed grammar textbooks show that there has been being a change in grammatical usage, specifically in the use of the progressive form with stative verbs. In particular, traditional views support the limitation of the use of the progressive form with stative verbs, while present-day English ones prove that many stative verbs can be used in progressive form. Through the discussion, the writer of the present paper finally suggested two pedagogical implications for teaching English progressive aspect.
In this article, the primary purpose is to design and implement a remote light control example that makes use of the Arduino IDE platform for programming, the MQTT protocol, and an ESP32 microcontroller, which has a dual-core CPU as well as Wi-Fi and Bluetooth capabilities. This aspect is related to the Internet of Things (IoT), which allows any fundamental device to be linked and become a smart device via the application of the Internet. As a result, these devices can be operated from a significantly long-distance, eliminating the need to physically interact with the switches to turn them on or off. The first part of the paper is a discussion of the fundamental theory that is provided to examine the potential of remote control methods, followed by a short overview of the Arduino integrated development environment (IDE), MQTT communication protocol, and PWM technique to regulate the brightness of lights. The second section is devoted to hands-on work, such as setting up an environment connection over the Internet, compiling and designing a printed circuit board (PCB).
This article is the results of the project "Assessment of health and safety risks for wood industry workers researched at Lap Giai company, Ben Cat district, Binh Duong province". Theory of change (ToC) is an intervention strategy to reduce worker health risk and safety that was initially established by the research team before being deployed at Lap Giai Company. Preparation ToC helps promote and cooperate in the co-production of knowledge between the academic and management group. The paper is a summary of 10 steps of the ToC method, in which, planning, analyzing change needs, projecting impacts, mapping intermediate results, determining project outputs, identifying assumptions, creating diagrams and explaining the ToC are important steps. The experiences drawn from the theory of change in transdisciplinary study are (1) Can be applied to digital transformation research and environmental management research in enterprises. (2) Role leadership is decisive in developing transdisciplinary topics in enterprises. (3) Both internal and external environments must be considered to design the most beneficial change interventions.

Research on bagasse recycle total paper application in life

Nguyễn Thị Xuân Hạnh, Nguyễn Thị Bích Ngọc, Võ Thị Hải Yến
In the new era, paper is still the main source of raw materials for daily life and production activities. Therefore, the research team explored recycling paper from bagasse to reduce waste and limit the depletion of available resources. The main material is bagasse with binders of aloe vera, corn starch, and CaCO3 in certain proportions to create paper products. From the methods of data collection, experiment, quality control, and meta-analysis to make paper from sugarcane applied to daily life. The disintegration test showed about three hours of paper dissolving in water. The product is tearable and has good adhesion. The product is handmade, so the thickness can be adjusted depending on the purpose of use. The product has a certain curvature and high strength. In addition, it is possible to create from this recycled paper into products that are applied in life such as decorative cards, bags, etc.
ABSTRACT With the ever-increasing development of technology, online teaching is more readily accepted as a viable component in teaching and learning, and blended learning, the combining of online and face-to-face learning, is becoming commonplace in many higher education institutions. Definitely, challenges cannot be denied; however, it has been suggested and deployed globally including Vietnam. To some extent, both teachers and students present their positive points of view on this learning approach. However, there are a huge number of students expressing their lack of understanding the blended learning, which negatively affects their attitudes towards deployment of this learning approach as well as particular reference to motivation and interest. This paper is to assess the English majors’ perceptions on blended learning environment at tertiary level, which especially affects their learning the writing skills. Results of the study are absolutely helpful for the author to understand the students’ perceptions of the effects on the blended learning; then, she can give some suggestions to enhance the learning of writing skills in the light of blended learning. Key word: Blended learning, academic writing, perception
Performance-related pay (PRP) is an integral part of Reward Management (RM) and is considered to have beneficial effects on organisational performance and employee motivation. Drawing on 14 case studies, this paper examines the Reward Management practices of local and multinational companies in Australia with specific consideration to PRP within the debate over the applicability of the transfer of the Human Resource Management (HRM) practices between nations through subsidiary-parent company relationships. After reviewing the relevant literature(s), the study concentrates on finding whether multinational corporations (MNC) in Australia pursue similar or different RM practices compared to their domestically owned Australian counterparts with special reference to PRP. It also investigates whether there are national variations between multinational companies in terms of the nature and character of their practices. The findings reveal country of origin differences in the way PRP practices are applied in subsidiaries of foreign-owned companies in Australia and local Australian firms. The case studies are used to examine and explain the practices.
The electricity obtained from the photovoltaic (PV) system highly depends on various factors such as geographical location, solar radiation, weather conditions and orientation of solar panels. The electricity produced by the solar PV system can be assessed by using simulations. This paper presents a technical feasibility assessment of a 10 kWp rooftop solar PV system for a household in Thu Dau Mot City, Vietnam. The study presents the amount of electricity produced, the performance of the PV system and the system potential to reduce CO2 emissions into the environment. The designing and evaluating of the system performance is done by PV*SOL, PVsyst and PVGIS software. The project provides useful information for the pre-feasibility assessment phase of a residential solar PV project in Vietnam.
It is very common to stabilize the preset value (Wanted value) of analog signals such as temperature, pressure, weight, flow, speed in automatic control. However, these control objects often have some problems such as overshooting, taking a long time to bring the system to a steady value, and large errors. One of the most used systems to overcome these problems is the PID, which is a preset stabilizing system with a quick function that returns the system to the set value in a short time without overshooting. error is close to zero. However, determining the scale parameters Ki, integral Kp, and differential Kd for the system to work optimally is a problem that needs to be studied. This paper presents how to accurately determine differential, integral, and scale coefficients according to 3D virtual reality model. Used a lot in simulation modeling for training and practical applications.
International scientific publication is one of the activities that help improve the quality of scientific research and develop the brand name of the university. This paper presents some key features of Thu Dau Mot university’s international scientific publications through statistics from 2015 to 202 which based on criteria: the number of publications in international journals (included ISI, Scopus and non-ISI, Scopus), field of science, gender and research collaboration. In addition, this paper will discuss some initial identifications: (1) the number of international scientific publications has grown rapidly and steadily over the years; (2) the number of international scientific publications is concentrated in the natural science, engineering and technology; (3) social science and education’s contribution in international scientific publications has limited;(4) there is a significant difference in the number of international scientific publications between male and female; (5) Research collaboration has an important role in the international scientific publications of Thu Dau Mot university.
This paper analyzes the interpersonal metafunction in text messages of teachers of English at Viet Anh School. The paper uses Systemic Functional Grammar as the theoretical framework which aims to investigate into a language from a qualitative approach. The aim of this paper is to discover how interpersonal metafunction is being served in text messages of teachers of English in terms of mood, speech function, modality and personal pronouns. The analysis indicates that the English teachers often use text messages for providing more information and demanding services by the dominant use of declaratives clauses in their interaction. These English teachers also perform their plans or desires about their future intention through the frequent use of modality such as ‘will’, ‘can’ or ‘could’. Through the analysis of personal pronouns, it can be clear that the English teachers tend to interact with each other by sharing their points of view rather than mentioning about other things or persons. Their social relation is shorten through the popular use of pronouns ‘I’, ‘we’ and ‘you’. Thus, it can be concluded that the social relationship among the English teachers is established and maintained through the use of interpersonal metafunction.

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.

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