Precipitation nowcasting is one of the main tasks weather forecasting that aims to predict rainfall events accurately, even in low-rainfall regions. It has been observed few studies have devoted predicting future radar echo images a reasonable time using deep learning approach. In this paper, we propose novel approach, RainPredRNN, which combination UNet segmentation model and PredRNN_v2 for precipitation with images. By leveraging abilities contracting-expansive path model, number...

In recent years, losses and damages from flash floods have been steadily increasing worldwide as well in Vietnam, due to physical factors, human activities, especially under a changing climate. This is hotspot issue which requires immediate response scientists policy-makers monitor mitigate the negative impacts of floods. study presents way reduce through accuracy real-time flood warning systems case developed for Ha Giang province where topography relatively complex with severe observed....

This research presents results for the sediment kinematics in a clear-water scour experiment with circular pier. Various process phases were considered, until depth equalled almost twice pier diameter. The are consistent typical literature descriptions of flow field and findings few previous works where motion at local was investigated. relationship between time-averaged concentration velocity sediments hole found to be space- time-invariant. In addition, link analogous those an earlier work...

Environmental flow assessment is an essential tool in water resource management. This study employs a holistic approach to evaluate the environmental Yen Basin, Thanh Hoa, Vietnam. Based on information gathered from field survey, River system divided into five reaches, and objectives ecological assets are identified each reach. Hydrological hydraulic mathematical models applied simulate regime river, demonstrating their potential assess flow, especially basins with limited data. The detailed...

Nghiên cứu nhằm xác định và đo lường các nhân tố ảnh hưởng đến quyết sử dụng dịch vụ smart banking tại Ngân hàng Thương mại cổ phần Đầu tư Phát triển Việt Nam- Chi nhánh Bắc Sài Gòn (BIDV BSG), bằng việc khảo sát 235 khách cá của nhánh. công cụ SPSS 20 để phân tích độ tin cậy thang qua hệ số Cronbach’s Alpha, khám phá EFA, mô hình hồi quy tuyến tính bội.Kết quả nghiên cho thấy tác động cực, sắp xếp theo mạnh giảm dần, bao gồm: Cảm nhận dễ dụng, sự hữu ích, tưởng tới Smart kháchhàng. Trong...

ABSTRACT In this research, the authors aim to evaluate damage caused by floods in Vinh Phuc Province. The study incorporates construction of hydro-hydraulic models and development functions for main elements at risk. order ensure accuracy calculated results, curves are verified their reasonableness. outcomes give us an overview flood research area. It indicates that potential level is a matter significant concern, with annual estimate approximately 6.9 million USD. also reveals distribution...

Abstract Ca River is one of the largest rivers in Vietnam. The river provides water, electricity, and navigation for millions people living along banks. Besides these great benefits, also poses many potential risks people. In case flooding, this can cause terrible damage, especially dike breach. Therefore, article, by combining a field survey mathematical simulation, has been conducted to present results breach La Giang river, Ha Tinh province, Via survey, locations were specifically...

Abstract Bankfull discharge is an important criterion for flash flood warnings. In this study, the authors propose a new approach to determine bankfull basins in Ha Giang province, Vietnam. The study combines field survey through indicators and develop multivariate regression equation between basin characteristics. results of give simple with 2 independent variables. They are catchment area main river length. show strong relationship R indexes developing validating process equal 95.3% 92.7%,...

The influence of the infrastructure system on flood drainage is increasingly concerned in recent years. It foundation for socio-economic development planning. study was carried out downstream Kone-Ha Thanh river basin. In this study, integrated hydro-hydraulic models are applied to evaluate impacts these objects issue. calibrated and validated be consistent with observed data. By simulating whole system, model shows that roads main hindrance drainage. capacity current culverts cannot adapt...

The calibration of the water level in a hydraulic model experiment is time-consuming task. In this study, authors proposed guide to adjust fixed-bed experiment, by establishing connection between increase (ΔZ) with other factors such as roughness diameter (d), density (s), and flow velocity (v). Based on results 105 experiments different d, s, v, study also suggested process design experiment. were used build for river section passing through Ialy hydropower plant Vietnam. showed that after...

Sensitivity analysis is an effective tool to determine the robustness of assessment by examining extent which results are affected changes in input. In this study, FAST method was applied analyse sensitivity earth dam failure process. Four (04) input variables were selected including breach development time, width, side slope, and initial position. The effects these parameters on two (02) outputs i.e., maximum outflow, rising time assessed. study 08 reservoirs with different capacities....