https://journal.hcmue.edu.vn/index.php/hcmuejos <p><strong>HO CHI MINH CITY UNIVERSITY OF EDUCATION JOURNAL <br /> OF SCIENCE (HCMUE J. SCI.)</strong></p><p><strong> </strong></p><p>v <strong>General Information</strong></p><p><strong>Ho Chi Minh City University of Education Journal of Science<br /> (HCMUE J. Sci.)</strong> is an open access double-blinded, peer-reviewed journal, which is published on a monthly basis. </p><p><strong>HCMUE J. Sci.</strong> aims to contribute to the development and dissemination of multidisciplinary knowledge on Science and Education and other related aspects to increase dialogue among scholars, researchers and practitioners. The journal welcomes manuscripts with significant originality and scientific excellence. All submitted manuscripts must be theoretically and empirically original and have not been published anywhere. Manuscripts submitted to the journal should meet these criteria and will be undergone a rigorous peer-review process.</p><p>v <strong>About Us</strong></p><p>The <strong>HCMUE J. Sci.</strong> is a peer-reviewed multidisciplinary academic journal sponsored by Ho Chi Minh City University of Education. The journal aims to provide researchers, professors, students and readers the most advanced research achievements in a wide range of areas and to facilitate the academic exchange between them. Compliant with open access policies, published materials can be copied and distributed without obtaining permission as long as a correct citation to the original publication is given. The HCMUE J. Sci. publishes original scientific research in one of four languages: Vietnamese, English, French or Chinese.</p><p>v <strong>Publication Ethics Statement</strong></p><strong>HCMUE J. Sci.</strong> is committed to maintaining the highest quality of published papers. All papers accepted for publication will be subjected to a rigorous peer-review. Any papers suspected of plagiarism, falsification and inauthentic authorship will never be published. HO CHI MINH CITY UNIVERSITY OF EDUCATION vi-VN HCMUE Journal of Science 2734-9918 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4505 We consider logistic system Assuming that the nonlinearities and satisfy certain growth conditions. We use the fixed point index theory and monotone minorants techniques to prove the existence of solutions for the system. This extends some known results. Bich Huy Nguyen Thế Quân Bùi Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4266 In this paper, we characterize the compactness of the Calderón-Zygmund commutator of type theta (see Definitions 1.3, 1.4 and 1.5 in Section 1) on generalized Morrey-Lorentz spaces (see Defintion 1.1). More precisely, we prove that if b is a vanishing BMO function, then the commutator [b, T] is a compact operator on generalized Morrey-Lorentz spaces. We also obtain a sufficient condition for a subset in generalized Morrey-Lorentz spaces to be strongly pre-compact. Ngoc Xuan Vy Pham Thanh Phat Phan Minh Thuc Le Kim Thanh Du Trí Dũng Trần Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/3999 The distribution inequality was recently proposed by Tran & Nguyen to investigate gradient estimates for solutions of partial differential equations. Specifically, the authors have proposed several sufficient conditions for two mesurable functions to obtain comparisons with norm between those two functions in general Lebesgue spaces. The results are then applied to some classes of p-Laplace type problems. In this paper, we extend this inequality for applying to many other classes of equations. More precisely, the distribution function inequality we propose can be applied to the p(x)-Laplace equation which is known as the typical version of quasi-linear elliptic equations with variable exponents. Khánh Huy Lê Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4192 Uvaria siamensis has been used as traditional medicine in Asian countries, especially in Southeast Asia such as Laos, Cambodia, Thailand, and Vietnam. This plant is native to Vietnam. This study was done to investigate the phytochemicals of plants of Uvaria siamensis grown in Thailand. Four compounds tamgermanetin (1), trans-N-caffeoyltyramine (2), 6β-hydroxystigmast-4-en-3-one (3), and cerevesterol (4) were isolated from the ethyl acetate extract of Uvaria siamensis. Their chemical structures were elucidated by comparing their spectroscopic data with reported data in the literature. Ngoc Anh Doan Thi Phuong Thao Le Hong Ngoc Nguyen Thi Ngoc Duyen Nguyen Boi Phong Vuong Thúc Huy Dương Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4493 The microalgae Scenedesmus belongs to the Chlorophyta phylum and is a widely distributed freshwater algae species. Many species of microalgae from the genus Scenedesmus are found in the Can Gio mangrove biosphere reserve and play a significant role in the water environment. In this study, two microalgae strains, Scenedesmus CG01 and CG03, were newly isolated from two different sampling locations in the Can Gio mangrove biosphere reserve. These two strains have similar morphological characteristics and share typical features of the genus Scenedesmus. Through PCR, sequencing, and identification based on the 18S DNA sequence, it was confirmed that these two strains, CG01 and CG03, are Scenedesmus sp. The 18S DNA sequences of these two strains have some differences compared to the sequences of Scenedesmus sp. CCAP 217/7 and CCAP217/8 in GenBank. Based on the 18S sequences, the phylogenetic tree also shows that CG01 and CG03 strains are in a group, separate from the remaining samples. This research on the isolation and accurate identification of species provides an important foundation for future studies on the application of microalgae. Thành Trí Đỗ Thi Diem Phuc Lai Van Toan Em Quach Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4616 The black cherry tomato (Solanum lycopersicum L. var. cerasiforme) is an important crop, yet it is highly vulnerable to abiotic stresses, particularly salinity, which severely impairs seed germination and seedling growth. Mitigating the effects of salt stress is therefore critical for ensuring stable tomato production. This study examined the potential of spent tea leaf (STL) extract as a seed priming agent to alleviate the detrimental effects of salinity on seed germination and seedling development. Seeds of black cherry tomato were germinated in a growth medium containing NaCl at concentrations of 0, 2.5, 5.0, and 7.0 g/L. At 7 g/L NaCl, significant reductions were observed in germination rate, root length, shoot length, and the seed vigor index. To counteract these effects, seeds were treated with STL extracts derived from black, green, and oolong teas at concentrations of 1%, 2%, and 4%. Among these treatments, seeds primed with 1% oolong STL extract exhibited the most notable improvements across all measured parameters. The oolong STL treatment at 1% resulted in the highest final germination percentage, average daily germination rate, and Timson index under 7 g/L NaCl conditions. Additionally, significant enhancements in shoot length, root length, and fresh biomass were observed in seeds treated with oolong STL compared to those subjected to saline conditions without priming. Thị Thu Ngân Lương Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4277 Describing the nuclear radiative strength function (RSF) at energies below the neutron separation energy (Bn) is crucial for providing reliable input in nuclear reaction and nuclear astrophysics calculations. In this study, we evaluate eight RSF models, encompassing both phenomenological and microscopic approaches, by employing them as input to calculate the neutron-capture cross-section of the 55Mn(n,γ)56Mn reaction. The obtained result is then compared with the experimental one. Our results indicate that microscopic RSF models built on the Hartree-Fock mean field theory offer good descriptions of the cross-section, with notable performance observed in the temperature-dependent Hartree-Fock-Bogoliubov (T-dependent HFB) model. Selecting such appropriate RSF models ensures reliable input for calculations related to nuclear reactions and astrophysics. Ngọc Anh Nguyễn Tấn Phúc Lê Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/3967 This study presents the simulation results of the X-ray spectra of the general diagnostic radiography unit by using five computer codes. The general diagnostic machine was assessed by quality assurance testing. The half-value layer (HVL), mean energy (Emean), and Air kerma per mAs (Kair/mAs) have been measured and compared with those obtained from five computer codes. The heel effect and target material composition were investigated. The IPEM report No.78 was used as a reference to compare with other computer codes. The HVL, Emean, Kair/mAs, and spectra were caused by five computer codes and the measurements showed that all have good agreement with the IPEM report No.78 and IEC 60601-1-3. The percentage differences (Diff, %) for HVL comparison vary between 1,16 to 3,71% for 70kVp, 0,64 to 3,61% for 80kVp, 0,11 to 3,13% for 90kVp. The Diff, % in Emean comparison vary between 0,24 to 8,95% for 70kVp, 0,07 to 6,29% for 80kVp, 0,08 to 7,0% for 90kVp. The Diff, % in Kair/mAs comparison vary between 2,60 to 8,12% for 70kVp, 1,70 to 7,90% for 80kVp, 2,40 to 7,84% for 90kVp. For the anode heel effect, Kair/mAs is higher towards the cathode side and lower towards the anode side, and the difference is lower when aluminium filters are added. The X-ray spectrum obtained by SpekPy is in the best agreement with IPEM report No.78 while Xpecgen, Spektr 3.0, EGSnrc MC show a significantly lower K-peaks intensity for 80 and 90kVp. The comparative assessment showed that the HVL, Emean and Kair/mAs were well-matched between the five codes and physical measurements. Ngọc Huy Bùi Văn Dũng Phạm Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4604 ABSTRACT Improving competitiveness is a long-term development strategy for tourist destinations, and assessing factors affecting tourism competitiveness is significantly relevant. This study evaluates the factors influencing the competitiveness of tourist destinations in Hoi An City, Quang Nam Province, which is known for its rich and attractive tourism resources. The study employs the Exploratory Factor Analysis (EFA) model, analyzing seven groups of factors and 64 associated criteria: (1) Core resources and attractions, (2) Tourism services, (3) Tourism infrastructure, (4) Supporting and conditioning factors, (5) Policies, planning, and tourism development, (6) Destination management, and (7) Demand factors. Through surveys and interviews with 320 visitors to Hoi An, the findings highlight varying impacts among the groups, with the highest Factor Loading at 0.788. The study offers policy recommendations for authorities, managers, and communities to enhance tourism competitiveness. . Keywords: EFA, destination competitiveness, Hoi An City, Quang Nam Province . ỨNG DỤNG MÔ HÌNH PHÂN TÍCH NHÂN TỐ KHÁM PHÁ TRONG ĐÁNH GIÁ NHÂN TỐ ẢNH HƯỞNG ĐẾN NĂNG LỰC CẠNH TRANH ĐIỂM ĐẾN DU LỊCH TẠI THÀNH PHỐ HỘI AN, TỈNH QUẢNG NAM TÓM TẮT Nâng cao năng lực cạnh tranh là chiến lược phát triển lâu dài tại điểm đến du lịch, và việc đánh giá các yếu tố tác động đến năng lực cạnh tranh du lịch vì thế có ý nghĩa thực tiễn quan trọng. Dựa trên điều này, nghiên cứu được thực hiện nhằm mục đích đánh giá các nhân tố ảnh hưởng đến năng lực cạnh tranh điểm đến du lịch tại thành phố Hội An, tỉnh Quảng Nam – nơi có nhiều giá trị tài nguyên hấp dẫn du khách trong và ngoài nước. Trong nghiên cứu này, mô hình phân tích nhân tố khám phá (EFA) được vận dụng với 7 nhóm nhân tố và 64 tiêu chí thành phần bao gồm (1) Nguồn lực cốt lõi và điểm hấp dẫn chính, (2) Dịch vụ du lịch, (3) Hạ tầng du lịch, (4) Các yếu tố hỗ trợ và điều kiện, (5) Chính sách, quy hoạch và phát triển du lịch, (6) Quản lí điểm đến, và (7) Các nhân tố cầu. Thông qua việc khảo sát và phỏng vấn đối với 320 du khách tham quan Hội An, kết quả nghiên cứu cho thấy, có sự tác động khác biệt trong các nhóm nhân tố, trong đó, nhân tố có chỉ số Factor Loading lớn nhất là 0.788. Các kết quả này đặt ra những gợi ý chính sách cho các chính quyền, nhà quản lí và cộng đồng trong việc quan tâm đến nâng cao năng lực cạnh tranh điểm đến. . Từ khóa: EFA, điểm đến, năng lực cạnh tranh, thành phố Hội An, tỉnh Quảng Nam.. Phú Thắng Nguyễn Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4457 The rapid advancement of mobile technology over the past two decades has significantly impacted education. Along with this progress, a new form of learning known as mobile learning (m-learning) has emerged. Over the years, many studies on m-learning in mathematics education have increased significantly. This research is a systematic review of 43 international articles and five studies from Vietnam related to mobile learning in mathematics education from 2008 to 2024. The study aims to answer questions regarding the purposes, methods, results, applications, websites, mathematical concepts, learning environments, and mobile devices used in m-learning studies in mathematics education. The research presents findings based on these questions, particularly highlighting gaps in the existing studies on this topic both internationally and in Vietnam. This review provides valuable insights for educators and researchers interested in integrating mobile learning into mathematics education and identifies key areas for future research. Phúc Nhĩ Khang Đỗ Minh Dũng Tăng Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4726 The application of AI, particularly ChatGPT, is being extensively researched to support personalized learning and enhance interaction in education. Current trends focus on using AI for content creation, query assistance, and fostering creative learning. Our study aims to encourage teachers to use ChatGPT in generating real-world problems. Focusing on the 10th-grade algebra curriculum, we guided teachers through a process of training ChatGPT using prompts and real-world problems from a 10th-grade algebra textbook. Teachers then used these prompts to create and improve real-world problems with solutions tailored to specific topics within the curriculum. Discussions on ChatGPT's effectiveness in each topic aimed to help teachers optimize its use for creating real-world problems. Results from 33 math teachers over five weeks showed statistically significant increases in factors influencing technology acceptance and ChatGPT adoption according to the Technology Acceptance Model. Despite sample limitations, teachers generally expressed high agreement with ChatGPT-generated problems and initial proficiency in training the chatbot for educational purposes. They also showed intentions to use ChatGPT in the future. Thái Bảo Thiên Trung Lê Minh Dat Nguyen Minh Dung Tang Van Thanh Trinh Minh Nhut Nguyen Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4629 This systematic review investigates the nature and ways of teacher educators' professional learning and development. By analyzing 26 research articles, we identified three primary contents of learning: knowledge base, pedagogy of teacher education, and research. Additionally, we found that teacher educators engage in a diverse range of learning activities, including action research, collaboration with colleagues; community of practice; courses and workshops; and mentoring and coaching. This study contributes to a deeper understanding of teacher educators' professional learning and can inform strategies to support their ongoing development. Thi Thu Lieu Le Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4562 Giáo dục đại học đang phải đối mặt với thách thức trong việc đáp ứng nhu cầu học tập đa dạng của sinh viên. Cá nhân hóa học tập (Personalized Learning), là việc điều chỉnh nội dung, tiến độ và phương pháp dạy học theo nhu cầu của mỗi sinh viên, nổi lên như một giải pháp đầy hứa hẹn. Sự phát triển của trí tuệ nhân tạo (AI) đã mở ra những cơ hội to lớn cho việc cá nhân hóa học tập ở quy mô lớn và hiệu quả. Bài báo này phân tích vai trò của AI trong việc cá nhân hóa học tập của sinh viên, từ khái niệm đến các ứng dụng cụ thể. Nghiên cứu cho thấy AI có thể hỗ trợ cải thiện kết quả học tập, thúc đẩy động lực và tăng cường sự tham gia của sinh viên. Tuy nhiên, hiệu quả của AI phụ thuộc vào nhiều yếu tố như chất lượng dữ liệu, thiết kế hệ thống AI, năng lực của giảng viên và sự tham gia tích cực của sinh viên. Bài báo cũng phân tích các thách thức và rào cản trong việc ứng dụng AI, đồng thời đề xuất các giải pháp để ứng dụng AI cá nhân hóa học tập hiệu quả. Võ Anh Nguyễn Chí Hải Nguyễn Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4180 Môi trường thân thiện được xem là một trong những yếu tố tác động đến mức độ gắn kết của học sinh. Bài báo trình bày các tác động của môi trường giáo dục thân thiện đến mức độ gắn kết của học sinh tại các trường trung học cơ sở trên địa bàn Thành phố Hồ Chí Minh. Để tìm hiểu tác động, nghiên cứu đã áp dụng phương pháp nghiên cứu định lượng tương quan, kiểm định các thang đo môi trường thân thiện, mức độ gắn kết và tương quan cũng như mô hình hồi quy tuyến tính. Có 599 học sinh và 142 giáo viên tại bảy trường trung học cơ sở trên địa bàn Thành phố Hồ Chí Minh đã tham gia trả lời phiếu hỏi. Kết quả nghiên cứu chỉ ra mức độ gắn kết của học sinh chịu tác động bởi các yếu tố: (1) sự hòa đồng của học sinh; (2) sự hỗ trợ của giáo viên; (3) sự chú trọng học tập và công bằng của nhà trường. Từ cơ sở kết quả khảo sát, Ban giám hiệu các trường trung học cơ sở cần đẩy mạnh tổ chức các hoạt động nâng cao chất lượng mối quan hệ bạn bè của học sinh, tăng cường các biện pháp giáo dục tư tưởng cho giáo viên trong việc hỗ trợ học sinh và luôn thể hiện thái độ cư xử bình đẳng trong nhà trường. Thị Vân Anh Nguyễn Ngọc Thiên Kim Võ Hà Anh Lân Nguyễn Thị Hương Phạm Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4689 Bài viết này nhằm mục đích hệ thống hóa và xác định lý luận về rèn luyện kỹ năng chăm sóc đáp ứng với trẻ của sinh viên đại học ngành giáo dục mầm non để từ đó làm cơ sở khoa học xác định các chỉ báo xây dựng bộ công cụ đánh giá thực trạng kỹ năng này cho sinh viên cũng như đề xuất quy trình nâng cao hiệu quả, chất lượng nhiệm vụ rèn luyện này cho sinh viên ngành giáo dục mầm non. Thị Xuân Lụa Bùi Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4773 Early childhood major students will be preschool teachers in the future, and the success of new methods such as STEAM depends mainly on their access, acceptance, and application of these methods in their professional practice. Applying STEAM to preschool education requires preschool teachers to implement the preschool education program directly to gain knowledge, skills, and confidence in approaching STEAM education. These factors not only depend on the efforts of teachers, on the training process, and on fostering STEAM education capacity for preschool teachers but also require preschool teacher training institutions to pay more attention to preparing students with knowledge and skills related to STEAM education while studying in the classroom. The article analyzes the current status of preschool education students' access to STEAM education and proposes measures to improve access to STEAM education. Đắc Thanh Nguyễn Copyright (c) 2025 HCMUE Journal of Science 22 3 https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4813 Foreign language education for children is increasingly prioritized in Vietnam. Recent efforts to implement communicative teaching approaches signal a positive shift toward improving language education quality. However, Communicative Language Teaching (CLT) often emphasizes productive language use, particularly speaking, which can be challenging for young learners with limited English proficiency and exposure. As a result, students may struggle to participate in communicative activities, leading to frustration and disengagement. To address the limitations of CLT, Task-Based Language Teaching (TBLT) has emerged as a significant advancement in communicative pedagogy. It offers a more scaffolded approach that supports language acquisition through structured, meaningful tasks. This study explores the potential of TBLT for young learners in Vietnam, considering theoretical foundations and pedagogical strategies. Special attention is given to input-based tasks and task repetition as essential strategies for optimizing TBLT at the primary level. By bridging theory and practice, this research contributes to the ongoing efforts to improve foreign language education for young learners in Vietnam. Trần Bảo Ngọc Bùi Copyright (c) 2025 HCMUE Journal of Science 22 3