المؤلفون: Nam Thang Tran, Minh Duc Tran, Thi Hong Que Hoang, Hoi Nguyen, Thi Yen Van, Thai Hung Le, Dien Dinh, Thanh Pham, Ngoc Hoa Nguyen, Dinh Quynh Phu Nguyen, Thi Huyen Trang Nguyen, Van Quynh Huynh, Quoc Tuan Doan

المصدر: Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, Vol 132, Iss 1C (2023)

مصطلحات موضوعية: Ba kích tím, Morinda officinalis, đặc điểm thực vật, vi phẫu, soi bột, Science, Science (General), Q1-390

الوصف: Ba kích tím (Morinda officinalis How.) là một loài dược liệu quý được nghiên cứu và sử dụng từ rất lâu đời. Các nghiên cứu về Ba kích tím trước đây chủ yếu tập trung vào nguồn giống thu hái tại các tỉnh phía Bắc của Việt Nam. Nghiên cứu này là công trình đầu tiên về đặc điểm thực vật bao gồm hình thái, vi phẫu và soi bột của cây Ba kích tím được thu hái tại môi trường tự nhiên của tỉnh Thừa Thiên Huế. Đặc điểm hình thái và đặc điểm vi học được nghiên cứu bằng phương pháp so sánh hình thái và nhuộm kép và quan sát dưới kính hiển vi qua vật kính 10× và 40×. Kết quả nghiên cứu cho thấy sự tương đồng và khác biệt chính về đặc điểm thực vật của cây Ba kích tím giữa Thừa Thiên Huế và các vùng miền khác ở Việt Nam. Đặc biệt, rễ củ Ba kích tím tại Thừa Thiên Huế có tỷ lệ bộ phận sử dụng nhiều hơn so với các loài Ba kích tím tại khu vực phía Bắc. Kết quả của bài báo góp phần cung cấp dữ liệu khoa học cho học tập và nghiên cứu về đặc điểm hình thái và vi học của loài Ba kích tím ở Thừa Thiên Huế.

وصف الملف: electronic resource

العلاقة: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/7200Test; https://doaj.org/toc/1859-1388Test; https://doaj.org/toc/2615-9678Test

الوصول الحر: https://doaj.org/article/b552689f9df84c89b0bded9d877d9b30Test

المؤلفون: S. N. Bardakov, Minh Duc Tran, S. V. Lapin, A. N. Moshnikova, E. U. Kalinina, E. G. Bogdanova, A. V. Bolekhan, B. L. Gavriluk

المصدر: Journal of Medical Case Reports, Vol 15, Iss 1, Pp 1-9 (2021)

مصطلحات موضوعية: Trophic disorders, Axonal polyneuropathy, Celiac disease, Membrane plasma exchange, Transglutaminase, Medicine

الوصف: Abstract Background Patients with celiac disease present with not only gastrointestinal symptoms but also extraintestinal manifestations such as anemia, osteopathy, dermatitis herpetiformis, and celiac neuropathy. Despite a fairly wide range of celiac neuropathies, we report a case of the acrodystrophic variant of celiac polyneuropathy, which has not been previously described. Case presentation A 41-year-old Ukrainian male suffered from symmetric, sensorimotor axonal polyneuropathy and encephalopathy associated with celiac disease, which is characterized by severe trophic disorders in the lower extremities (trophic ulcers, hyperkeratosis, and anhidrosis). Acrodystrophic changes in the lower extremities were due to both neurogenic and direct immunoinflammatory damaging effects. Clinical–electrophysiological dissociation was also noted, which was represented by a gross axonal lesion with the preservation of muscle strength. The absence of enteropathic manifestations was accompanied by the pronounced histological changes in the duodenal mucosa by IIIb stage of Marsh. A gluten-free diet in combination with membrane plasma exchange and intravenous pulse methylprednisolone was prescribed to reduce the severity of sensory disorders and regression of encephalopathy within 7 months. Conclusion Celiac disease may be a potential cause of neuropathy and encephalopathy in adult patients. Further immunosuppressive treatment protocols for both intestinal and extraintestinal manifestations of celiac disease are required.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1752-1947Test

الوصول الحر: https://doaj.org/article/7f32b93649f64ce5bdfa3ef5b51bf5d9Test

المؤلفون: Minh Duc Tran, Trang Tran, Ngan Nguyen, Ha Chu, Taisuke Nakahama, Nam Nguyen

المصدر: Bangladesh Journal of Pharmacology, Vol 17, Iss 3 (2022)

مصطلحات موضوعية: Aryl hydrocarbon receptor, Eurycoma longifolia, 9-Hydroxycanthin-6-one, Inflammatory cytokines, Therapeutics. Pharmacology, RM1-950

الوصف: No abstract

وصف الملف: electronic resource

العلاقة: https://www.banglajol.info/index.php/BJP/article/view/60373Test; https://doaj.org/toc/1991-0088Test

الوصول الحر: https://doaj.org/article/b163664f53b94ebcb89758db885d4d9dTest

المؤلفون: Philippe Robert, Alexandra König, Radia Zeghari, Rachid Guerchouche, Minh Duc Tran, François Bremond, Nicklas Linz, Hali Lindsay, Kai Langel, Inez Ramakers, Pascale Lemoine, Vincent Bultingaire

المصدر: BMJ Open, Vol 11, Iss 9 (2021)

مصطلحات موضوعية: Medicine

وصف الملف: electronic resource

العلاقة: https://bmjopen.bmj.com/content/11/9/e047083.fullTest; https://doaj.org/toc/2044-6055Test

الوصول الحر: https://doaj.org/article/13f878cad9eb4100bfbbd5566152901aTest

المؤلفون: Van, Phi Nguyen, Minh, Duc Tran, Huy, Hieu Pham, Quoc, Long Tran

مصطلحات موضوعية: Electrical Engineering and Systems Science - Image and Video Processing, Computer Science - Computer Vision and Pattern Recognition

الوصف: Denoising Diffusion Probabilistic Models (DDPMs) have demonstrated significant achievements in various image and video generation tasks, including the domain of medical imaging. However, generating echocardiography videos based on semantic anatomical information remains an unexplored area of research. This is mostly due to the constraints imposed by the currently available datasets, which lack sufficient scale and comprehensive frame-wise annotations for every cardiac cycle. This paper aims to tackle the aforementioned challenges by expanding upon existing video diffusion models for the purpose of cardiac video synthesis. More specifically, our focus lies in generating video using semantic maps of the initial frame during the cardiac cycle, commonly referred to as end diastole. To further improve the synthesis process, we integrate spatial adaptive normalization into multiscale feature maps. This enables the inclusion of semantic guidance during synthesis, resulting in enhanced realism and coherence of the resultant video sequences. Experiments are conducted on the CAMUS dataset, which is a highly used dataset in the field of echocardiography. Our model exhibits better performance compared to the standard diffusion technique in terms of multiple metrics, including FID, FVD, and SSMI.

الوصول الحر: http://arxiv.org/abs/2310.07131Test

المؤلفون: Viet, Hoang Nguyen, Viet, Linh Nguyen, Dinh, Tuan Nguyen, Minh, Duc Tran, Quoc, Long Tran

مصطلحات موضوعية: Computer Science - Computer Vision and Pattern Recognition

الوصف: With many practical applications in human life, including manufacturing surveillance cameras, analyzing and processing customer behavior, many researchers are noticing face detection and head pose estimation on digital images. A large number of proposed deep learning models have state-of-the-art accuracy such as YOLO, SSD, MTCNN, solving the problem of face detection or HopeNet, FSA-Net, RankPose model used for head pose estimation problem. According to many state-of-the-art methods, the pipeline of this task consists of two parts, from face detection to head pose estimation. These two steps are completely independent and do not share information. This makes the model clear in setup but does not leverage most of the featured resources extracted in each model. In this paper, we proposed the Multitask-Net model with the motivation to leverage the features extracted from the face detection model, sharing them with the head pose estimation branch to improve accuracy. Also, with the variety of data, the Euler angle domain representing the face is large, our model can predict with results in the 360 Euler angle domain. Applying the multitask learning method, the Multitask-Net model can simultaneously predict the position and direction of the human head. To increase the ability to predict the head direction of the model, we change there presentation of the human face from the Euler angle to vectors of the Rotation matrix.
Comment: Accepted at The 13th International Conference on Knowledge and Systems Engineering (KSE 2021), 7 pages, 2 figures, 3 tables

الوصول الحر: http://arxiv.org/abs/2111.11604Test

المؤلفون: Viet, Linh Nguyen, Dinh, Tuan Nguyen, Viet, Hoang Nguyen, Minh, Duc Tran, Quoc, Long Tran

مصطلحات موضوعية: Computer Science - Computer Vision and Pattern Recognition, Computer Science - Artificial Intelligence, Computer Science - Human-Computer Interaction

الوصف: Head pose estimation is a challenging task that aims to solve problems related to predicting three dimensions vector, that serves for many applications in human-robot interaction or customer behavior. Previous researches have proposed some precise methods for collecting head pose data. But those methods require either expensive devices like depth cameras or complex laboratory environment setup. In this research, we introduce a new approach with efficient cost and easy setup to collecting head pose images, namely UET-Headpose dataset, with top-view head pose data. This method uses an absolute orientation sensor instead of Depth cameras to be set up quickly and small cost but still ensure good results. Through experiments, our dataset has been shown the difference between its distribution and available dataset like CMU Panoptic Dataset \cite{CMU}. Besides using the UET-Headpose dataset and other head pose datasets, we also introduce the full-range model called FSANet-Wide, which significantly outperforms head pose estimation results by the UET-Headpose dataset, especially on top-view images. Also, this model is very lightweight and takes small size images.

الوصول الحر: http://arxiv.org/abs/2111.07039Test

المؤلفون: Van-Dat Nguyen, Quang-Dong Dang, Minh-Tai Vo, Minh-Duc Tran, Anh-Khoa Vo, Thanh-Binh Nguyen, Phuoc-Tung Tran, Huu-Sang Le

المصدر: Robotica & Management, Vol 28, Iss 1, Pp 43-52 (2023)

مصطلحات موضوعية: optimal control, simatic s7-1200, pendubot, plc, underactuated system, Technology (General), T1-995, Industrial engineering. Management engineering, T55.4-60.8, Management information systems, T58.6-58.62

الوصف: In optimal control, a common problem is developing a control law that can drive a dynamical system from one state to another as quickly as possible. The objective of paper is to design optimal control approach based SIMATIC S7-1200 for under-actuated Pendubot system. The main contribution of this paper is to introduce and validate control method for laboratory model of Pendubot system by using industrial device, namely, Programmable logic controller (PLC). Besides, Lyapunov Analysis is used to analyze the stability of optimal control. The simulation is performed in MATLAB/Simulink environment and experiment is carried out in TIA PORTAL environment. The simulation results and experimental results illustrate that the proposed control method is effective and robust by using PLC.

العلاقة: https://doaj.org/toc/1453-2069Test; https://doaj.org/toc/2359-9855Test; https://doi.org/10.24193/rm.2023.1.6Test; https://doaj.org/article/7ee5982a685f45a18757375dd3f0635eTest

الإتاحة: https://doi.org/10.24193/rm.2023.1.6Test
https://doaj.org/article/7ee5982a685f45a18757375dd3f0635eTest

المؤلفون: Minh-Duc Tran, Le-Tuan-Hung Pham, Nguyen-Quang-Dong Dang, Doan-Tuan-Minh Tran, Minh-Khoi Nguyen, Le-Anh Bui, Quoc-Khanh Nguyen, Minh-Tai Vo

المصدر: Robotica & Management, Vol 28, Iss 1, Pp 53-58 (2023)

مصطلحات موضوعية: pendubot, linear quadratic regulator, input-output linearization, fuzzy logic control, comparison, Technology (General), T1-995, Industrial engineering. Management engineering, T55.4-60.8, Management information systems, T58.6-58.62

الوصف: This paper presents a comparison of the three distinctive well-known control techniques, including Linear Quadratic Regulator (for short, LQR), Sliding Mode Control (for short, SMC), and Fuzzy Logic Control (for short, FLC). Each controller is in a different control category; LQR is an optimal controller employed in both linear and nonlinear systems, SMC is a nonlinear controller commonly applied in a nonlinear system, and the Fuzzy controller is the intelligent controller which can be archived by user’s experiment or other learning techniques. Beside the three main controllers for stabilizing at the equilibrium point, the swing-up controller is designed based on energy-based method to bring the system at the initial position close to the equilibrium points. Finally, the performance and the validity of the three methods are verified through both simulation and experimental results.

العلاقة: https://doaj.org/toc/1453-2069Test; https://doaj.org/toc/2359-9855Test; https://doi.org/10.24193/rm.2023.1.7Test; https://doaj.org/article/1d644ce43c79477ca64b60667a21f913Test

الإتاحة: https://doi.org/10.24193/rm.2023.1.7Test
https://doaj.org/article/1d644ce43c79477ca64b60667a21f913Test

المؤلفون: Minh-Duy Vo, Van-Dat Nguyen, Dac-Hoa Huynh, Trung-Hieu-Duy Phan, Tuan-Nam Nguyen, Nguyen-Anh-Khoa Dinh, Minh-Duc Tran, Minh-Tai Vo

المصدر: Robotica & Management, Vol 28, Iss 1, Pp 59-67 (2023)

مصطلحات موضوعية: rotary double parallel inverted pendulum, rdpip, pid-lqr, cascade, lqr, Technology (General), T1-995, Industrial engineering. Management engineering, T55.4-60.8, Management information systems, T58.6-58.62

الوصف: In this article, the rotary double parallel inverted pendulum (RDPIP) is researched and presented. Additionally, some linear controllers, such as PID, PID, PID-LQR cascade, are proposed, developed to control RDPIP, and the impact of those controllers on the rotary double inverted pendulum was examined. The research and simulation results are implemented in the Matlab/Simulink toolbox to prove the ability of these types of controller in balancing this model.

العلاقة: https://doaj.org/toc/1453-2069Test; https://doaj.org/toc/2359-9855Test; https://doi.org/10.24193/rm.2023.1.8Test; https://doaj.org/article/d104c8b7b60940ed9e14114116360233Test

الإتاحة: https://doi.org/10.24193/rm.2023.1.8Test
https://doaj.org/article/d104c8b7b60940ed9e14114116360233Test