1 Image processing based concrete crack classification using Logistic Regression model = Phân loại vết nứt trên cấu kiện bê tông sử dụng kỹ thuật xử lý ảnh và mô hình hồi quy lô-git-tíc / Hoang Nhat Duc // .- 2021 .- Số 02 (45) .- P. 3-6 .- 690

This study develops an alternative model based on image edge detection, projection integral, and logistic regression approaches for recognizing and categorizing cracks on concrete surface. The integrated model has been developed using Visual C#.NET and tested with 200 real-world image samples.

2 Iteratively reweighted multiple linear regression with applications in civil engineering data modeling = Phân tích hồi quy có trọng số với các ứng dụng vào mô phỏng dữ liệu trong ngành xây dựng / Hoang Nhat Duc // .- 2021 .- Số 02(45) .- P. 16-22 .- 624

This study develops a computer program and implements the iteratively reweighted least squares (IRLS) used for fitting multiple linear regression models. The capability of the combined model, IRMLR, is demonstrated using two artificial datasets and two real-world applications. The results indicate that the IRMLR model can be a useful tool to assist civil engineers in the task of data modeling.

3 Gabor filter based image segmentation for detecting damages on surface of reinforce concrete structures = Phát hiện các khuyết tật trên bề mặt kết cấu bê tông cốt thép sử dụng kỹ thuật phân ngưỡng ảnh dựa trên bộ lọc Gabor / Hoang Nhat Duc, Nguyen Quoc Lam, Tran Van Duc // .- 2021 .- Số 02(45) .- P. 10-15 .- 690

This study aims at developing a computer vision tool to segment images capturing surface of reinforced concrete structures. The image processing technique of Gabor filter is used with k-Means clustering algorithm and principal component analysis to automatically segment damages on concrete surface including spall, crack, bughole, and stain.

4 Roles of 26S proteasome in development and stress responses = Vai trò của 26S proteasome trong quá trình phát triển và đáp ứng stress / Nguyen Minh Hung // .- 2021 .- Số 02(45) .- P. 23-28 .- 570

Recent studies showed that altered expression of some transcription factors resulted in abnormal gene expression of subunits of the 26S proteasome.

5 Optical properties of Nitrogen and Sulfur doped Graphene quantum dots = Tính chất quang của các chấm lượng tử Graphene pha tạp Nitơ và Lưu huỳnh / Le Xuan Hung, Trinh Thi Hue, Pham Thu Nga // .- 2021 .- Số 02(45) .- P. 29-34 .- 530

Present new results on the synthesis of nitrogen-doped GQDs (NGQDs) and sulfur-doped GQDs (S-GQDs) and their respective optical properties such as absorption spectra, fluorescence, and Raman spectra. The fluorescent mechanisms of GQDs, N-GQDs, and S-GQDs will also be clarified and explained.

6 Direct observation of a laser-excited circular acoustic wave crossing a solid-liquid interface by photoelasticity imagine technique = Quan sát trực tiếp một sóng âm hình cầu sinh ra bởi tia laser đi qua một bề mặt phân cách rắn-lỏng bằng phương pháp quang / Nguyen Thi Phuong Thao // .- 2021 .- Số 02(45) .- P. 35-38 .- 530

This technique provides a clear, whole field image of the phenomena; and is a promising method to study the acoustic phenomena at the interfaces.

7 Early dynamics of laser-induced cavitation bubble induced in laser ablation of solid in water = Động học sớm của bóng khí sinh ra trong quá trình phá hủy chất rắn trong môi trường nước / Nguyen Thi Phuong Thao // .- 2021 .- Số 02(45) .- P. 39-41 .- 363

In this study, we observed the evolution of a cavitation bubble induced by focusing a nanosecond-pulsed laser on an epoxy-resin surface using a photoelasticity imaging technique. The radius-time curve of the bubble within the first 1000 ns was reported for different pulse energies from 20 to 60 mJ.

8 The future of virtual screening in drug discovery = Tương lai của sàng lọc ảo trong khám phá thuốc chữa bệnh / Pham Thi Ly, Le Quoc Chon // .- 2021 .- Số 02(45) .- P. 42-50 .- 615

Aiming at the same goal as HTS, virtual screening (VS) has been developed to reduce cost and increase efficiency. Recent studies show that VS can deliver numerous quality hits and a few of them even reach clinical trials. This paper uses HTS as a background to discuss the contributions, limitations and research trends in VS field as these two technologies complement each other.

9 Convergence in probability for the estimator of nonparametric regression model based on pairwise independent errors with heavy tails = Hội tụ theo xác suất đối với ước lượng mô hình hồi quy phi tham số với sai số ngẫu nhiên độc lập đôi một và có xác suất / Tran Dong Xuan, Nguyen Tran Quyen, Nguyen Thi Thu An, Le Van Dung // .- 2021 .- Số 02(45) .- P. 51-57 .- 510

Study convergence in probability for the estimator of nonparametric regression model based on pairwise independent errors with heavy tails. Firstly, we investigate laws of large numbers for sequences of pairwise independent random variables with heavy tails. By applying this result, we investigate convergence in probability for the estimator of nonparametric regression model.

10 13C chemical shift predictions for bakuchiol‒a recently discovered agent against organ damage = Tính toán độ dịch chuyển hóa học 13C của bakuchiol‒tác nhân mới điều trị tổn thương các cơ quan / Nguyen Thi Nhu Y, Nguyen Trong Thien // .- 2021 .- Số 02(45) .- P. 58-64 .- 615

Aimed to find suitable methods with high accuracy, this present study evaluated 11 DFT functionals and 11 common basis sets in the calculations of 13C chemical shifts for bakuchiol.