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Eye Strain Detection During Online Learning

Intelligent Automation & Soft Computing 2023年第3期35卷 3517-3530页

作者： Le Quang Thao Duong Duc Cuong Vu Manh Hung Le Thanh Vinh doan trong nghia Dinh Ha Hai Nguyen Nhan Nhi Faculty of Physics VNU University of ScienceHanoi100000Vietnam University of Science Vietnam National UniversityHanoi100000Vietnam VNU-HUS High School for Gifted StudentsHanoi100000Vietnam Hanoi-Amsterdam High School for the Gifted Hanoi100000Vietnam

The recent outbreak of the coronavirus disease of 2019(Covid-19)has been causing many disruptions among the education systems worldwide,most of them due to the abrupt transition to online *** sudden upsurge in digital electronic devices usage,namely personal computers,laptops,tablets and smart-phones is unprecedented,which leads to a new wave of both mental and physical health problems among students,for example eye-related *** overexpo-sure to electronic devices,extended screen time usage and lack of outdoor sun-light have put a consequential strain on the student’s ophthalmic health because of their young age and a relative lack of responsibility on their own *** to take appropriate external measures to mitigate the negative effects of this pro-cess could lead to common ophthalmic illnesses such as myopia or more serious *** remedy this situation,we propose a software solution that is able to track and capture images of its users’eyes to detect symptoms of eye illnesses while simultaneously giving them warnings and even offering *** meet the requirements of a small and light model that is operable on low-end devices without information loss,we optimized the original MobileNetV2 model with depth-wise separable convolutions by altering the parameters in the last layers with an aim to minimize the resizing of the input image and obtained a new model which we call *** with applying the knowledge distillation tech-nique and ResNet-18 as a teacher model to train the student model,we have suc-cessfully increased the accuracy of the EyeNet model up to 87.16%and support the development of a model compatible with embedded systems with limited computing power,accessible to all students.

关键词： Digital eye strain Covid-19 online study knowledge distillation eye care EyeNet

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Data-driven approach to solve vertical drain under time-dependent loading

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Frontiers of Structural and Civil Engineering 2021年第3期15卷 696-711页

作者： trong nghia-NGUYEN Mamoru KIKUMOTO Samir KHATIR Salisa CHAIYAPUT HNGUYEN-XUAN Thanh CUONG-LE Department of Civil Engineering Yokohama National UniversityYokohama 240-8501Japan Faculty of Civil Engineering Ho Chi Minh City Open UniversityHo Chi Minh City 70000Vietnam Department of Electrical Energy MetalsMechanical Constructions and SystemsFaculty of Engineering and ArchitectureGhent UniversityGhent 9000Belgium Department of Civil Engineering School of EngineeringKing Mongkut’s Institute of Technology LadkrabangBangkok 10520Thailand CIRTECH Institute Ho Chi Minh City University of Technology(HUTECH)Ho Chi Minh City 708300Vietnam

Currently,the vertical drain consolidation problem is solved by numerous analytical solutions,such as time-dependent solutions and linear or parabolic radial drainage in the smear zone,and no artificial intelligence(AI)approach has been ***,in this study,a new hybrid model based on deep neural networks(DNNs),particle swarm optimization(PSO),and genetic algorithms(GAs)is proposed to solve this *** DNN can effectively simulate any sophisticated equation,and the PSO and GA can optimize the selected DNN and improve the performance of the prediction *** the present study,analytical solutions to vertical drains in the literature are incorporated into the DNN–PSO and DNN–GA prediction models with three different radial drainage patterns in the smear zone under timedependent *** verification performed with analytical solutions and measurements from three full-scale embankment tests revealed promising applications of the proposed approach.

关键词： vertical drain artificial neural network time-dependent loading deep learning network genetic algorithm particle swarm optimization

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Cable-Stay Bridges——Investigation of Cable Rupture

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Journal of Traffic and Transportation Engineering 2016年第5期4卷 270-279页

作者： Nguyen trong nghia Vanja Samec Faculty of Civil Engineering University of Transport and Communication Hanoi 10000 Vietnam Global Director RM Bridge Bentley Systems Austria GmbH Graz 8010 Austria

As the bridge engineering community sets sails to use longer and longer spans, more and more sophisticated analysis models have to be used in the design process. One of the significant problems represents cable rupture of cable stays. The problem is also addressed in guidelines for cable-stayed bridge design such as PTI （Post-tensioning Institute） Recommendations and EC3 by quasi-static analyses using DAF （dynamic amplification factors） to account dynamic effects, which can be conducted instead ofnsing dynamic analysis. The results show that the value DAF depends on the cable rupture location and on the type and location of the examined state. Dynamic time history analysis is recommended. Some projects examples are highlighted in the paper, where the importance of above mentioned topic has been investigated, following different regulations and approaches. Professional bridge analysis and design sottware solution RM Bridge has been used for all investigations. The application can fulfill all requirements and deliver expected and accurate results. In addition, RM Bridge Sottware also helps engineers as a tool to optimize structure design and increase resistance capacity for each element to ensure the structural safety in service stage.

关键词： Cable-stayed bridge dynamic non-linear analysis cable rupture.

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Development of Multiphoton Ionization Technique for Detection of Polycyclic Aromatic Hydrocarbon (PAH) in Solution

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Open Journal of Applied Sciences 2015年第10期5卷 595-599页

作者： Hoa Do Quang Duong Vu nghia Nguyen trong Totaro Imasaka Center for Quantum Electronics Institute of Physics Vietnam Academy of Science and Technology (VAST) Hanoi City Vietnam Department of Applied Chemistry Kyushu University Fukuoka Japan

A simple low-cost system for detection of polycyclic aromatic hydrocarbon (PAH) in solution based on multiphoton ionization configuration is designed using a circulating ionization cell of 0.1 × 2 × 5 mm dimension with quartz optical window. Fourth harmonic emission of Nd:YAG laser (266 nm, 6 ns, 10 Hz, and 2 mJ) and second harmonic generation of distributed feedback dye laser (278 - 286 nm, 20 ps, 10 Hz, and 300 μJ) were used as the ionization source. A high voltage of 800 V was applied to separate the ions after ionization. The photocurrent includes a sharp peak and a broad tail indexed to electron and ion currents, respectively. The lowest concentration of anthraxcene (C14H10) in order of few nano-grams per milliliter was detected by this multiphoton ionization configuration.

关键词： UV Laser Multiphoton Ionization Polycyclic Aromatic Hydrocarbon

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Preparation and Characterization of Silver Doped ZnO Nanostructures

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Open Journal of Synthesis Theory and Applications 2012年第2期1卷 18-22页

作者： Nguyen Van nghia Tran Nam Trung Nguyen Ngoc Khoa Truong doan Minh Thuy Department of Physics Quy Nhon University Quy Nhon Vietnam

ZnO was prepared by hydrothermal method. The result of scanning electron microscopy showed that the materials had nano rod structures. Ag-doped ZnO was prepared by UV-photoreduction. Crystalline phases and optical absorption of the prepared Ag-doped ZnO samples were determined by X-ray diffraction, Raman spectrum, UV-visible, and UV- photoreduction spectrophotometer. X-ray analyses revealed that Ag was doped ZnO crystallizes in hexagonal wurtzite structure. The incorporation of Ag+ in the site of Zn2+ provoked an increase in the size of nanocrystals as compared to pure ZnO. The photocatalytic and photoluminescence properties of materials were considered.

关键词： Nanostructures Photocatalysis Hydrothermal ZnO Silver Doping

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越南wNw酒吧

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现代装饰 2013年第8期 46-51页

作者： Vo trong nghia Hiroyuki Oki Vo trong nghia Architects 谢作标 Vo trong nghia Architects

wNw酒吧是一座纯竹子结构建筑，坐落于越南平阳省境内的一座人工湖上。它与wNw餐厅相邻而建，是本案设计公司的首个纯竹子结构建筑。当你来到酒吧入口处，数块矩形垫脚石阶会引领你穿过大幅抬高的人工湖面，从而进入酒吧内部。这里一般... 详细信息

wNw酒吧是一座纯竹子结构建筑，坐落于越南平阳省境内的一座人工湖上。它与wNw餐厅相邻而建，是本案设计公司的首个纯竹子结构建筑。当你来到酒吧入口处，数块矩形垫脚石阶会引领你穿过大幅抬高的人工湖面，从而进入酒吧内部。这里一般用于举办如音乐会、演出等各类文化活动和当地居民议事等社会活动。

关键词：越南社会活动文化活动子结构人工湖酒吧入口处音乐会

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竹制展示厅

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设计 2012年第7期25卷 62-63页

作者： Jacob Vo trong nghia

这个作品是展出在越南2012年建筑展览会上的作品之一，是由500支竹竿搭建而成的，由Vo trong nghia设计制造。这个展示棚只使用了“竹”这一种建材，就连钉子等连接物也是用竹子制成的，属于极简抽象派风格。整个棚子的屋顶也属于突拱... 详细信息

这个作品是展出在越南2012年建筑展览会上的作品之一，是由500支竹竿搭建而成的，由Vo trong nghia设计制造。这个展示棚只使用了“竹”这一种建材，就连钉子等连接物也是用竹子制成的，属于极简抽象派风格。整个棚子的屋顶也属于突拱式的砌体结构，设计者先用竹制框架作为支撑，在两端的墙壁上垒砌短竹筒，再用长竹包裹墙壁，山墙结构上能看到裸露的竹子一端，

关键词：展示厅砌体结构设计者展览会连接物墙结构作品竹子

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农场幼儿园

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景观设计 2015年第2期 32-39页

作者： Vo trong nghia Architects 杨柳

该项目紧邻一家大型制鞋厂，是专为该制鞋厂低收入工人的子女而建的，园内现有500名学前儿童。该项目是热带可持续教育空间的典范。

关键词：幼儿园农场可持续教育学前儿童制鞋厂空间

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Dailai会议中心

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景观设计 2014年第3期 34-39页

作者： Vo trong nghia Architects 汪章雯

Flamingo Dailai度假村的规划和建设是为了使繁忙城市中的居民能够在周末享受被自然包围的感觉。度假村位于距离河内市约50干米远的一片茂密的森林中，被Dailai湖和群山包围。在度假村，游客们沉浸在由各种景观小品、植物等组成的美丽... 详细信息

Flamingo Dailai度假村的规划和建设是为了使繁忙城市中的居民能够在周末享受被自然包围的感觉。度假村位于距离河内市约50干米远的一片茂密的森林中，被Dailai湖和群山包围。在度假村，游客们沉浸在由各种景观小品、植物等组成的美丽景观中，远离城市喧嚣。

关键词：景观小品度假村城市居民

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对话自然越南Son La餐厅

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室内设计与装修 2015年第6期 36-39页

作者： Vo trong nghia Architects 刘琰金陵科技学院

山罗省位于越南的北部，受热带季风气候影响，天气炎热潮湿，此处拥有丰富的原始森林资源和多样的民族文化。为了发展当地旅游业，SonLa餐厅的业主特意请到Vo trong nghia Architects（简称VTN）团队，在那里完成了一个能容纳750人的餐... 详细信息

山罗省位于越南的北部，受热带季风气候影响，天气炎热潮湿，此处拥有丰富的原始森林资源和多样的民族文化。为了发展当地旅游业，SonLa餐厅的业主特意请到Vo trong nghia Architects（简称VTN）团队，在那里完成了一个能容纳750人的餐厅项目。VTN的主持建筑师武重义也是越南当下最具国际影响力的建筑师之一，他擅长将竹子、藤蔓和石头等天然材质运用到设计之中，并结合当地景观，创造出一个个独具个性的“自然”建筑。

关键词：餐厅越南自然对话国际影响力建筑师气候影响热带季风

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