Thu Dau Mot University Journal of Science


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92 papers


In the late nineteenth and early twentieth century, the intelligentsia of the colonial countries and ones being threatened by Western colonial dominance in Asia began to re-perceive the problems of sovereignty, nation-state, and re-ask questions like "What is history for?" as well as review what previous historians wrote about their national history. From re-realizing history and rewriting history according to new perspectives, historiography in these countries has shifted from "traditional" to "modern" with taking Western science as the main direction. Vietnamese historiography is also not out of that general change. Examining the product of historical books at the beginning of the twentieth century, Phan Boi Chau is considered as the pioneer historian for that historiographical turn. The article focuses on analyzing the new historical viewpoints of Phan Boi Chau from the global perspective of the flow of thought in Asian countries at that time.
A study on the diversity of Orchids from Southern East Viet Nam was carried out in 2019 and 2020 and identified 173 species, 50 genera, accounting for 1.28% of the total number of orchid species available in Viet Nam (897 species). Among them, all species were used as ornamental plants; 13 species were used for medicinal herbs; and 5 species were listed for conservation in Vietnam Red Data Book, Part II, Plants (2007). The life forms of Orchids were divided into groups including (1) epiphytes with 144 species, (2) terrestrials with 26 species, (3) saprophytes with 1 species, (4) lithophytes with 2 species. There are 60 species were added to the Southern East Viet Nam. Keywords: Diversity of orchidaceae, Southern East Vietnam
As the most significant pollinators of wild plants, bees play an important role in sustaining the natural ecosystems. In this study, we conducted surveys of bee fauna of three different habitat types during dry and rainy seasons of 2020 in Binh Chanh District, Ho Chi Minh City. A total of 169 individuals from 13 bee species belonging to six genera were collected. Of these, eight species are newly recorded from Ho Chi Minh City: Amegilla calceifera, A. himalajensis, A. zonata, Ceratina nigrolateralis, C. smaragdula, Xylocopa aestuan, X. latipes, Tetragonula fuscobalteata. The species composition of bees was more diverse in forest habitat than rural garden and canalbank habitats. The richness and abundance of bees were significantly higher in the dry season than the rainy season. Apis florea was abundant in forest and rural garden habitats while Ceratina smaragdula occurred plentifully in the canalbank habitat. Eight bee species (Apis cerana, A. dorsata, A. florea, Thyreus himalayensis, Xylocopa latipes, X. aestuans, Ceratina smaragdula, and C. nigrolateralis) widely distributed throughout all three habitats. By contrast, four bee species (Amegilla calceifera, A. himalajensis, Apis mellifera, and Tetragonula fuscobalteata) exclusively appeared in the forest habitat.
In the trend of globalization and international integration of our country today, learning foreign languages in general and English in particular are aimed at achieving communication purposes. Therefore, learning the linguistic knowledge including vocabulary is also for the purpose of developing learners' communication skills. The non-majored English training for students at the Foreign Language Center - Thu Dau Mot University is directed to the effectiveness of communication, the most prominent is the method of learning vocabulary through the application of Morphology and Morpheme; At the same time, the method of learning meanings of words in the context and application of newly-learned words in the practice of communication skills will be also focused.
Result of study on the diversity of orchids in Southern East Viet Nam in 2019 and 2020 have identified 173 orchids species belong to 50 diffrent genus, accounting for 14.41% of the total number of orchid species available in Viet Nam (1.200 species). Among them, all species were used as ornamental plants; 13 species were used for medicinal herbs; and 5 species were listed for conservation in Vietnam Red Data Book, Part II, Plants (2007). The life forms of orchids were divided into groups including: (1) epiphytes with 144 species, (2) terrestrials with 26 species, (3) saprophytes with 1 species, (4) lithophytes with 2 species. Added 60 species to forest orchid flora of Southern East Viet Nam.
Along with changes in Economy, Tourism and the influence of foreign waves, the market of Food Service in Vietnam has also changed to meet the needs of customers. At many restaurants in Vietnam, customer satisfaction can greatly affect restaurant revenue. Therefore, it is essential to determine which perceived quality factors affect customer satisfaction. The survey was conducted through questionnaires collected from 329 respondents, who experienced in restaurant services in Vietnam. In this paper, four factors are found that have influence on customer satisfaction in restaurants: Service quality, Product quality, Environment and Price. In addition, the research also gives some contributions based on the research results, helping businesses understand customers and meet customer satisfaction requirements in the restaurant.
Youth in a nation is the most viable and potential human resource in both demographic and social structure. Without the youth's adequate and integrated bio-social development a nation cannot attain its anticipated human goals. Based on government initiative a2i, the empowerment of youth towards sustainable development in Bangladesh is described in this paper. Although the Bangladesh Government has formulated and implemented policies, plans and programs for youth welfare are still through GOs and NGOs. Related literature indicates that, regardless of all age and regions, young people in this country face several socio-cultural problems where they cannot grow and empower themselves adequately. As a result, they cannot play their important roles in sustainable development and changes within the country. To resolve the problems of the youth in relation to their development and empowerment, the Government of Bangladesh is developing and implementing some solutions. The case study focuses on the role of a2i for development of youth in the successful design of public development and sustainable development programs.
Most of the indoor accidents are related with fall down. Many medical studies are point out that key factor for keeping patient’s life is fast response of monitoring system. In modern life, peoples are isolated with neighbor, especially in living quarters. Therefore many solutions are developed for falling down monitoring that base on wearable sensors. These methods require of an expensive sensors system with electric power supplier and telecommunication devices. In context of patients with disease and weak status, patients are trend to remove sensor system. This issue requires to find out another approach so that sensors system will not be needed. We study the fall detection by monitoring camera. For increase the accuracy, we proposed a simple and effective method to extract features of abnormal activities. By tracking the magnitude of entropy and its distribution, our fall detection model has a capability of differentiating falls from other activities
Activity recognition is one of the preliminary steps in designing and implementing assistive services in smart homes. Such services help identify abnormality or automate events generated while occupants do as well as intend to do their desired Activities of Daily Living (ADLs) inside a smart home environment. However, most existing systems are applied for single-resident homes. Multiple people living together create additional complexity in modeling numbers of overlapping and concurrent activities. In this paper, we introduce a hybrid mechanism between ontology-based and unsupervised machine learning strategies in creating activity models used for activity recognition in the context of multi-resident homes. Comparing to related data-driven approaches, the proposed technique is technically and practically scalable to real-world scenarios due to fast training time and easy implementation. An average activity recognition rate of 95.83% on CASAS Spring dataset was achieved and the average recognition run time per operation was measured as 12.86 mili-seconds.
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.
The paper presents general theory about making small models for studying large machines. Here, the author refers to the design of pile driving and pressing machines. To express ideas, the author presents design drawings presented in three-dimensional perspective. Currently, pile drivers and pile presses are two separate machines, in which their base machine is the same, their working parts are slightly different. The author takes advantage of the slight differences to combine them into one machine, so as to ensure that this machine is able to pile or pile. In addition, the structure of pile making and pressing machines is created by the author, which is somewhat simpler than the current construction and driving machine. This successful study will form the basis for manufacturing a pile driving machine and pile machine into a single machine, greatly reducing the costs of procurement and construction machine use.

Building the environmental performance index for industrial parks

Phong Tran, Thuy Nguyen Thi Thanh, Pham Quoc Khanh, Than Nguyen Hien
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.
Men's grooming products are very diverse and plentiful in the world today. In recent years, Vietnamese men have approached beauty trend, the old conception of beauty is also gradually changing. The demand for male beauty in Vietnam in recent years indicates that men's awareness of beauty products. The potential for grooming products for men in Vietnam is huge, but in-depth studies on this topic are limited. It is important to have specific studies analyzing the consumption of grooming products for men in Vietnam, contributing to promoting the potential of these products for business benefits. The study collected data from 458 respondents are male, analyzed the factors affecting consumer attitudes, thereby opening a specific view on men's grooming consumption in Vietnam.
Dipterocarpus dyeri is a typical plant of tropical evergreen moist forest at Southeast Vietnam. These plants have been planted popularly at parks and urban streets for the shade and it has been commonly materials for timber industry. Multiplication of Dipterocarpus dyeri at nurseries could face to some diseases, such as the withered disease cause serial death. Our study isolated three disease fungi strains from the root areas of the diseased Dipterocarpus dyeri planted Ma Da nursery, Dong Nai province. Result of 28s rDNA sequencing showed these fungi belong to Ophiostoma eucalypticagena, Aspergillus nidulans and Collectotrichum gloeosporioides. This result is base for conducting the following studies to control the withered disease on Dipterocarpus dyeri at the nursery.
In this paper, we study a class of parametric vector mixed quasivariational inequality problem of the Minty type (in short, (MQVIP)). Afterward, we establish some sufficient conditions for the stability properties such as the inner-openness, lower semicontinuity and Hausdorff lower semicontinuity of the solution mapping for this problem. The results presented in this paper is new and wide to the corresponding results in the literature
The study was conducted at Fuji Seal Vietnam Co., Ltd. to examine the exposure and health risks of workers working in the printing and ink phase area when exposed to solvent vapor through the respiratory apparatus Toluene, Methyl Ethyl Ketone, Ethyl Acetate, Isopropyl Acohol. The results show that: During the monitoring period from July to November 2016, the amount of solvent vapor in the printing area and ink phase is quite high, at the highest Toluene printing area, it was 2.63 times higher than the standard equal to the health risk HQ male is 2.61 and HQ female is 3.37; Ethyl Acetate exceeded the highest of 4.34 times equal to the male HQ risk ratio of 4.29 and female HQ equal to 5.53; MEK exceeds 8.43 times equal to the health risk HQ male is 8.36 and HQ female is 10.79; Isopropyl Acohol exceeds 8.4 times equal to the health risk HQ male is 8.33 and HQ female is 10.75; At the inking area, MEK exceeds 8.43 times equal to the health risk HQ male is 8.36 and HQ female is 10.79. From the calculated data - analysis, found that the health of workers working in the printing and inking areas had high risks, the ability of workers suffering from diseases such as he dache, dizziness, skin damage,... and especially respiratory failure.
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.
Binh Duong has rapidly transformed during the period 1999-2009, from a agricultural province to industrial one. The paper explores the shift of occupation-based social structure of Binh Duong during that period. Using the data sets of Census 1999 and 2009, the paper analyses the evolution of the occupational figure in Binh Duong by ten occupational categories and four occupational strata, and the differences in this figure by residence, gender, ethnic, and religious variables. Findings show that the occupational structure of Binh Duong is more developed than the one of the Southern Key Economic Zone. Its change in rural areas is more significant than in urban areas. There are not considerable differences by gender, ethnicity, and religiousness. The findings are suggestive for a further analysis using the data set of Census 2019 on the evolution of occupational figures in Binh Duong during the previous twenty years (1999-2019).
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.

Interpretations about Hoa Anh state

Nguyễn Văn Giác
DOI:
On the basis of coordinating the sources of history materials from Vietnam and China, together with the latest archaeological achievements of Ho citadel, the article has delineated territory, confirmed the chronology frame with the Kings of this kingdom in relation to post-Champa Empire. It is from the aftermath of Vijaya, the two parts of Aryaru (Phu Yen) and Kauthara (Khanh Hoa) belong to Hoa Anh Kingdom, in which, Le Thanh Tong is crowned as Ban La Tra Duyet; the rebellion of this King is the cause for the second conquest, formally taking Ling Chan/ Da Bia as the landmark; Trai A Ma Phat Am is designated as Hoa Anh’s King on the remaining land of Kauthara, but immediately incorporated into Panduranga, forming the state of post-Champa.

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