Teacher Professional Development in the Context of Education Reform in Vietnam: Policy and Practice

Teacher Professional Development (TPD) plays an important role in the Fundamental and Comprehensive Education Reform in Vietnam. The goal of this study is to describe the situation of TPD in the context of education reform in Vietnam: Describe both the reform policies and practice in school. This study emphasized that Vietnam has actively implemented education policies relating to TPD. Three-dimensional evaluation of TPD included: (i) Teaching plans and materials; (ii) Organization of learning activities; and (iii) Students’ activities. The research results showed a positive moderate to the high correlation between teaching plans and materials and organization of learning activities and Students’ activities. The research results showed an inverse correlation between the average teacher age and the Organization of learning activities. The older teachers tended to underestimate the extent of implementation of Organization of learning activities. This finding led to recommendations to provide older teacher groups with professional development activities

Startup Learning Community Approach: Case Study in Vietnam

Group B: Quality of Education and Educational Polic

Post-mortem Reproduction from a Vietnamese Perspective—an Analysis and Commentary

Post-mortem reproduction is a complex and contested matter attracting attention from a diverse group of scholars and resulting in various responses from a range of countries. Vietnam has been reluctant to deal directly with this matter and has, accordingly, permitted post-mortem reproduction implicitly. First, by analysing Vietnam’s post-mortem reproduction cases, this paper reflects on the manner in which Vietnamese authorities have handled each case in the context of the contemporary legal framework, and it reveals the moral questions arising therefrom. The article then offers an account of Vietnamese social norms as an explanation for the tendency to conduct post-mortem reproduction. In arguing that a deeper and more thorough examination of the moral and ethical reasoning is required, the paper advocates in favour of supportive post-mortem reproduction regulation. In doing so, the paper seeks to reconcile the Vietnamese legal framework and post-mortem reproduction experiences of other countries. The article concludes that Vietnam and countries sharing the similar cultural traits should permit post-mortem reproduction explicitly. This would require full engagement with the ethical and legal issues arising, and careful promulgation of regulations and guidelines based on comparative experiences of a range of countries in handling this matter

LBMT team at VLSP2022-Abmusu: Hybrid method with text correlation and generative models for Vietnamese multi-document summarization

Multi-document summarization is challenging because the summaries should not only describe the most important information from all documents but also provide a coherent interpretation of the documents. This paper proposes a method for multi-document summarization based on cluster similarity. In the extractive method we use hybrid model based on a modified version of the PageRank algorithm and a text correlation considerations mechanism. After generating summaries by selecting the most important sentences from each cluster, we apply BARTpho and ViT5 to construct the abstractive models. Both extractive and abstractive approaches were considered in this study. The proposed method achieves competitive results in VLSP 2022 competition.Comment: In Proceedings of the 9th International Workshop on Vietnamese Language and Speech Processing (VLSP 2022

LG-Hand: Advancing 3D Hand Pose Estimation with Locally and Globally Kinematic Knowledge

3D hand pose estimation from RGB images suffers from the difficulty of obtaining the depth information. Therefore, a great deal of attention has been spent on estimating 3D hand pose from 2D hand joints. In this paper, we leverage the advantage of spatial-temporal Graph Convolutional Neural Networks and propose LG-Hand, a powerful method for 3D hand pose estimation. Our method incorporates both spatial and temporal dependencies into a single process. We argue that kinematic information plays an important role, contributing to the performance of 3D hand pose estimation. We thereby introduce two new objective functions, Angle and Direction loss, to take the hand structure into account. While Angle loss covers locally kinematic information, Direction loss handles globally kinematic one. Our LG-Hand achieves promising results on the First-Person Hand Action Benchmark (FPHAB) dataset. We also perform an ablation study to show the efficacy of the two proposed objective functions

Two decades of studies on learning management system in higher education: A bibliometric analysis with Scopus database 2000-2020

Over the past twenty years, using learning management systems in higher education has attracted increasing interest from researchers around the globe. In this context, the current study aimed to explore the volume, growth trajectory, and geographic distribution of learning management systems in higher education literature, along with identifying impactful authors, sources, and publications, and highlight emerging research issues. The authors conducted bibliometric analysis on 1334 documents, related to the use of learning management systems in the context of higher education, extracted from Scopus database. The findings show a rapidly growing knowledge base on learning management systems in higher education, especially intensely in the years 2015-2020 and primarily from research in developed societies. This flourishing is consistent with the development trend of international education and the strong development of technology. In addition, the core literature was identified based on the volume of publications and citations. The results also reveal the emerging intellectual structure of the field and provide points of reference for scholars studying the discipline. This paper offers a knowledge map for future research assessments of learning management systems in higher education

TỶ LỆ CHẾT CỦA VI KHUẨN DO PHÂN GIẢI CỦA VIRUS TRONG VỊNH NHA TRANG, NAM TRUNG BỘ, VIỆT NAM

Bacteria play an important role in microbial loop in marine waters and are strongly regulated by top-down controls by two groups, virus and microprotozoa. Bacterial mortality rates, because of viral lysis and microprotozoan grazing, were estimated using dilution method in Nha Trang bay in December 2014. The bacterial mortality rates were marked different among sampling sites and reflected by different in environmental conditions and layers in water column. In Nha Trang bay, the viral lysis on bacteria was, in similar trend with previous studies, high where their main hosts abundance, such as at surface and in the estruarine front area. Bacterial growth rate was low in Cai estuary and higher in mid of Nha Trang Bay and Hon Tam stations. The bacterial mortality rates in Nha Trang Bay were mainly because of the viral lysis (1.59-2.05 day-1) rather than of microprotozoan grazing (0.00-0.36 day-1). The microprotozoan grazing on bacteria in Cai estuary was significantly higher than in others sites (0.36 day-1 versus 0.00-0.05 day-1).Vi khuẩn có vai trò quan trọng trong vi lưới thức ăn ở biển và chịu sự chi phối top-down bởi hai nhóm chính virus và động vật nguyên sinh. Tỉ lệ chết của vi khuẩn (TLCVK) do phân giải của virus và bị ăn bởi động vật nguyên sinh trong vịnh Nha Trang, Khánh Hòa, được đánh giá sử dụng các thí nghiệm nuôi pha loãng. TLCVK có biến động khác nhau theo đặc trưng môi trường của vị trí thu mẫu và theo độ sâu trong cột nước. TLCVK do phân giải của virus cao ở tầng mặt, ở khu vực front cửa sông, và ở khu vực có độ phong phú cao của vi khuẩn thể hiện mối quan hệ giữa virus với các yếu tố môi trường và với độ phong phú của vật chủ. Tốc độ sinh trưởng của vi khuẩn thấp ở vùng cửa sông Cái và cao hơn ở vùng front cửa sông cũng như trạm Hòn Tầm. Lượng vi khuẩn trong vùng nghiên cứu mất đi chủ yếu bởi sự phân giải của virus (TLCVK biến thiên 1,59-2,05 /ngày) hơn là bị ăn bởi động vật nguyên sinh (TLCVK biến thiên 0,00-0,36 /ngày). Ở trạm cửa sông Cái, TLCVK do bị động vật nguyên sinh ăn cao hơn đáng kể so với các trạm khảo sát còn lại (0,36 /ngày so với 0,00-0,05 /ngày)

An Improved MobileNet for Disease Detection on Tomato Leaves

Tomatoes are widely grown vegetables, and farmers face challenges in caring for them, particularly regarding plant diseases. The MobileNet architecture is renowned for its simplicity and compatibility with mobile devices. This study introduces MobileNet as a deep learning model to enhance disease detection efficiency in tomato plants. The model is evaluated on a dataset of 2,064 tomato leaf images, encompassing early blight, leaf spot, yellow curl, and healthy leaves. Results demonstrate promising accuracy, exceeding 0.980 for disease classification and 0.975 for distinguishing between diseases and healthy cases. Moreover, the proposed model outperforms existing approaches in terms of accuracy and training time for plant leaf disease detection

ĐÁNH GIÁ MỨC ĐỘ ẢNH HƯỞNG CỦA CÁC NGUỒN NƯỚC CHẢY VÀO HỒ ĐAN KIA VÀ ÁP DỤNG MÔ HÌNH AQUATOX QUẢN LÝ CHẤT LƯỢNG

The parameters used for measuring water quality of Dan Kia reservoir were temperature, pH, conductivity, secchi disk depth, dissolved oxygen (DO), chlorophyll a,  nutrients: nitrogen (ammonia, nitrate) and phosphate. There are five influents for the reservoir, therefore the water quality of Dan Kia reservoir depends on activities around these channels. S1 stream has the highest flow into the reservoir (8.2×106m3/year) but most of the nutrients were discharged from S4 and S5 stream. Concentration of ammonia, nitrate and phosphate from these channels is accounting for 89.82, 58.15 and  57.16% into the lake, respectively. The study constructed three scenarios and run them using AQUATOX model. The first scenario, all existing inflows are discharging into the lake, present situation. The second scenario, none is discharging. The third scenario, all are discharging except S4 stream and S5 stream. The result from the first scenario showed that the concentrations from the model consistent with measurements in the reservoir. In case the second and third scenarios happened the concentrations considerably decreased.Các thông số chất lượng nước hồ Đan Kia được khảo sát hàng tháng trong năm 2014 gồm có nhiệt độ, pH, độ dẫn diện, độ sâu secchi, oxy hòa tan, các hợp chất chứa nitơ (amoni, nitrat),  phốt pho (PO43-) và chlorophyll-a. Có 5 nhánh suối dẫn nước vào hồ vì vậy chất lượng nước hồ phụ thuộc vào các hoạt động trên lưu vực hồ và 5 nhánh suối này. Trong đó, nhánh suối S1 có lưu lượng nước chảy vào hồ cao nhất (8.2×106m3/năm) nhưng phần lớn chất dinh dưỡng được đưa vào hồ từ nhánh suối S4 và S5. Nồng độ amoni, nitrat và phốt phát từ hai nhánh suối này lần lượt chiếm đến 89.82, 58.15 và 57.16% tổng tải lượng dinh dưỡng vào hồ. Nghiên cứu đã xây dựng ba kịch bản và mô phỏng ba kịch bản này bằng mô hình AQUATOX. Kịch bản thứ nhất, tất cả các con suối vẫn được dẫn nước vào hồ như hiện tại. Kịch bản thứ hai, không cho bất kỳ con suối nào đổ nước vào hồ. Kịch bản thứ ba, tất cả các nguồn trên vẫn được đưa vào hồ trừ suối S4 và S5. Kết quả từ mô hình AQUATOX cho thấy với kịch bản đầu tiên, nồng độ các chất dinh dưỡng từ mô hình phù hợp với nồng độ đo đạc và đều vượt ngưỡng cho phép. Ở kịch bản thứ 2 và 3, nồng độ các chất dinh dưỡng giảm đáng kể, hầu hết các giá trị đều nằm dưới tiêu chuẩn cho phép đới với nước mặt. Từ kết quả này, nghiên cứu đề nghị các cơ quan chức năng cần tập trung quản lý tình trạng canh tác nông nghiệp trên lưu vực hồ Đan Kia, đặc biệt là khu vực phía Đông Nam hồ. Nghiên cứu cũng đã mô phỏng xu hướng phát triển và thành phần động thực vật phù trong hồ Đan Kia