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Discrete-time sliding mode control with power rate exponential reaching law of a pneumatic artificial muscle system

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Control Theory and Technology 2022年第4期20卷 514-524页

作者： Quy-thinh Dao Trung-Kien le Tri van-Anh nguyen Manh-Linh nguyen School of Electrical and Electronic Engineering Hanoi University of Science and TechnologyDai Co VietHanoi 11615Vietnam

this paper develops a discrete-time sliding mode controller with a power rate exponential reaching law approach to enhance the performance of a pneumatic artificial muscle system in both reaching time and chattering *** proposed method dynamically adapts to the variation of the switching function,which is based on an exponential term and a power rate term of the sliding ***,the controlled system can achieve high tracking performance while still obtain chattering-free ***,the effectiveness of the proposed method is validated through multiple experimental tests,focused on a dual pneumatic artificial muscle ***,experimental results show the effectiveness of the proposed approach in this paper.

关键词： Pneumatic artificial muscle Discrete-time sliding mode control Exponential reaching law Chattering

Nutritional status of Vietnamese infants assessed by Fenton growth chart and related factors:A cross-sectional study

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Pediatric Investigation 2023年第4期7卷 254-262页

作者： Lieu Thu thi nguyen Cuong Danh Tran Ha Thu thi nguyen Hai Thanh Phan Linh Thuy nguyen Huong Lan thi nguyen Anh Hoai thi Ta Chau Quynh thi Pho Khanh Nam Do Anh Kim Dang Huong thi le School of Preventive Medicine and Public Health Hanoi Medical UniversityHanoiVietnam Department of Nutrition National Hospital of Obstetrics and GynecologyHanoiVietnam Department of General Obstetrics National Hospital of Obstetrics and GynecologyHanoiVietnam Department of Nutrition and Dietetics Hanoi Medical University HospitalHanoiVietnam Queensland Alliance for Environmental Health Sciences(QAEHS) The University of QueenslandBrisbaneAustralia

Importance:Nutritional status of infants,measured by birth weight and length,is an essential factor in neonatal *** in newborns may lead to a higher risk of mortality,neurological and cognitive impairment,and poor language ***:this study aims to assess the nutritional status of infants and related factors regarding maternal anthropometric characteristics and medical ***:A cross-sectional study was conducted at the National Hospital of Obstetrics and Gynecology,Vietnam from May 2021 to May 2022 on 340 infants and *** birth weight was defined following the Intergrowth-21 *** was evaluated using the Fenton growth chart when the length was below the 10%percentile line of the gestational *** regression models were applied to identify factors associated with the nutritional status of ***:We found that 12.4%and 14.1%of infants in our study fell into stunted and underweight categories,*** of mothers over 35 years old,having a height lower than 150 cm or experiencing anemia during pregnancy were more likely to be stunted or have low birth *** albumin deficiency during pregnancy was strongly associated with the infant being underweight(odds ratio[OR]=2.8,95%confidence interval[95%CI]1.1–7.3).Newborns were more likely to be stunted if their mothers had a history of preterm birth(OR=3.3,95%CI 1.1–10.2).Interpretation:Maternal nutritional status is closely related to infant malnutrition,particularly in preterm *** the understanding of mothers regarding prenatal care,reproductive healthcare,adequate nutritional diet,and multi-micronutrient supplements during pregnancy is therefore important.

关键词： Fenton chart Infant Low birth weight Stunting Underweight

高速铁路重力式路肩挡墙抗倾覆稳定性对路基面动变形影响

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铁道学报 2024年第4期46卷 167-176页

作者：吕鹏举罗强周成冯桂帅阮文德付航西南交通大学土木工程学院四川成都610031 西南交通大学高速铁路线路工程教育部重点实验室四川成都610031 中铁二院工程集团有限责任公司四川成都610031

路肩挡墙支护能力对路基面动变形有重要影响。构建高速铁路无砟轨道-路肩挡墙路基的空间结构有限差分模型,针对以倾覆破坏为主导模式的岩质地基重力式挡墙,基于正交试验方案,分析路堤高度、墙胸坡度、墙背倾斜、墙土摩擦、墙体位置、抗... 详细信息

路肩挡墙支护能力对路基面动变形有重要影响。构建高速铁路无砟轨道-路肩挡墙路基的空间结构有限差分模型,针对以倾覆破坏为主导模式的岩质地基重力式挡墙,基于正交试验方案,分析路堤高度、墙胸坡度、墙背倾斜、墙土摩擦、墙体位置、抗倾覆稳定系数共6个因素对路基承受列车荷载的动变形影响效应。通过引入反映路肩挡土墙约束路基能力的动变形指数R_ω,建立路基面动变形与显著影响因素之间的关系式。研究表明:列车荷载下路基面动变形以压缩变形为主,跟随变形与墙顶水平动位移近似呈线性正相关;挡墙抗倾覆稳定系数K_0和墙背倾斜tanα是影响路基面动变形的2个显著因素,R_ω与K_0和tanα之间服从二元三次曲面关系;以路肩挡墙路基面动变形ω不大于标准断面路堤相应值δ,即R_ω=δ/ω≥1.0为控制条件,墙背由俯斜渐变为仰斜,路肩挡墙抗倾覆稳定系数限值[K_0]非线性增大。研究成果对优化高速铁路路肩挡墙设计具有参考价值。

关键词：路肩挡墙抗倾覆稳定性路基面动变形有限差分法正交试验

Combining SnO_(2-x)and g-C_(3)N_(4)nanosheets toward S-scheme heterojunction for high selectivity into green products of NO degradation reaction under visible light

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Journal of Materiomics 2022年第1期8卷 1-8页

作者： Pham van Viet Thanh-Dat nguyen Dai-Phat Bui Cao Minh thi Faculty of Materials Science and Technology University of ScienceVNU-HCM227 Nguyen Van Cu StreetDistrict 5Ho Chi Minh City700000Viet Nam Vietnam National University-Ho Chi Minh City Thu Duc DistrictHo Chi Minh City700000Viet Nam Ho Chi Minh City University of Technology(HUTECH) 475A Dien Bien Phu StreetBinh Thanh DistrictHo Chi Minh City700000Viet Nam

NOx emissions cause many negative impacts on the living *** photocatalysis of semiconductors is superior for nitric oxide(NO)degradation due to their low redox *** this report,we combine SnO_(2-x)/g-C_(3)N_(4)heterojunction photocatalyst toward the high selectivity into green products under visible light *** show that SnO_(2-x)/g-C_(3)N_(4)heterojunction degraded 40.8%of NO,which is 1.6 times higher than that of g-C_(3)N_(4).In addition,the selectivity coefficient of SnO_(2-x)/g-C_(3)N_(4)is higher 3 times than both pure SnO_(2-x)and g-C_(3)N_(4).Furthermore,SnO_(2-x)/g-C_(3)N_(4)expresses a superior stability for NO photocatalytic-degradation after five *** scavenger trapping test results,and electron spin resonance(ESR)analysis also provide more understanding of the charge transfer mechanism of ***_(2-x)/g-C_(3)N_(4)heterojunction shows a high removal efficiency of NO gas,making it an up-and-coming environmental treatment candidate.

关键词： G-C_(3)N_(4) NO removal Oxygen vacancies Photocatalysis S-scheme

软木塞基碳量子点的水热合成及其生物相融荧光成像应用

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新型炭材料 2022年第3期37卷 595-602页

作者： Quang Ngo Khoa Hieu nguyen Ngoc Bao Vo van Quoc Phuoc Vo thi Ngoc le Xuan Diem Doc Luong Quang Tri nguyen Minh Son le Vu Truong Son le van Thanh Ha Che thi Cam University of Sciences Hue University77 Nguyen HueHueVietnam Faculty of Environmental and Natural Sciences Duy Tan UniversityDa Nang550000Vietnam Institute for Research and Training in Medicine Biology and PharmacyDuy Tan UniversityDa Nang550000Vietnam University of Agriculture and Forestry Hue University102 Phung HungHueVietnam University of Science and Education The University of Da Nang459 Ton Duc ThangLien ChieuDa NangVietnam

以废弃酒瓶软木塞为原料,采用低成本、简单的水热方法合成碳量子点。通过TEM、FTIR、Raman、UV-Vis、PL光谱对碳量子点的结构和光学性能进行分析表征。结果表明,碳量子点的平均直径为6.2±2.7 nm,PL激发谱和碳量子点表面的官能团有关。... 详细信息

以废弃酒瓶软木塞为原料,采用低成本、简单的水热方法合成碳量子点。通过TEM、FTIR、Raman、UV-Vis、PL光谱对碳量子点的结构和光学性能进行分析表征。结果表明,碳量子点的平均直径为6.2±2.7 nm,PL激发谱和碳量子点表面的官能团有关。用硫酸奎宁作为参考,碳量子点的量子效率为1.54%。将获得的碳量子点应用在骨髓间充质干细胞的细胞生物成像上,发现用碳量子点处理后,骨髓间充质干细胞分别在320~380 nm、450~490 nm和450~490 nm范围显示绿色、黄色和红色荧光,表明了碳量子点在荧光成像领域具有潜在的应用价值。

关键词：碳点水热合成荧光荧光图像废酒瓶塞

Sulphur vacancy defects engineered metal sulfides for amended photo(electro)catalytic water splitting: A review

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Journal of Materials Science & Technology 2023年第21期152卷 50-64页

作者： Kusum Sharma Abhinandan Kumar Tansir Ahamad Quyet van le Pankaj Raizada Archana Singh Lan Huong nguyen Sourbh Thakur van-Huy nguyen Pardeep Singh School of Advanced Chemical Sciences Shoolini UniversitySolanHimachal Pradesh 173212India Department of Chemistry College of ScienceKing Saud UniversitySaudi Arabia Department of Materials Science and Engineering Korea University145AnamroSeongbuk-guSeoul 02841Republic of Korea Advanced Materials and Processes Research Institute Hoshangabad RoadBhopalMP 462026India Faculty of Biology and Environment Ho Chi Minh City University of Food Industry(HUFI)140 Le Trong Tan StreetTay Thanh WardTan Phu DistrictHo Chi Minh CityVietnam Department of Organic Chemistry Bioorganic Chemistry and BiotechnologySilesian University of TechnologyB.Krzywoustego 444-100 GliwicePoland Faculty of Allied Health Sciences Chettinad Hospital and Research InstituteChettinad Academy of Research and EducationKelambakkam-603103Tamil NaduIndia

Vacancy engineering in metal sulfides has garnered enormous attention from researchers because of their outstanding ability to modulate the optical and physiochemical properties of ***,in the case of sulfides,the catalytic activity is drastically hindered by the quick reassembly of excitons and the photocorrosion *** designing and generating S-vacancies in metal sulfides has emerged as a potential strategy for attaining adequate water splitting to generate H_(2) and O_(2) because of the simulta-neous improvement in the optoelectronic ***,developing efficient catalysts that manifest optimal photo(electro)catalytic performance for large-scale applicability remains ***,it is of utmost interest to explore the insightful features of creating S-vacancy and study their impact on catalytic *** review article aims to comprehensively highlight the roles of S-vacancy in sulfides for amended overall water-splitting *** photocatalytic features of S-vacancies modulated metal sulfides are deliberated,followed by various advanced synthetic and characterization techniques for effectual generation and identification of vacancy *** specific aspects of S-vacancies in refin-ing the optical absorption range charge carrier dynamics,and photoinduced surface chemical reactions are critically examined for overall water splitting ***,the vouchsafing outlooks and op-portunities confronting the defect-engineered(S-vacancy)metal sulfides-based photocatalysts have been summarized.

关键词： S-vacancy Photo(electro)catalysis Metal sulfides Water splitting Engineering Identification of S-vacancies

Integrating Machine learning and Evidential Reasoning for User Profiling and Recommendation

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Journal of Systems Science and Systems Engineering 2023年第4期32卷 393-412页

作者： Toan nguyen Mau Quang-Hung le Duc-Vinh Vo Duy Doan van-Nam Huynh University of Information Technology Ho Chi Minh CityVietnam Vietnam National University Ho Chi Minh CityVietnam Department of Information Technology Quy Nhon UniversityQuy NhonVietnam Ho Chi Minh City University of Banking Ho Chi Minh CityVietnam School of Knowledge Science Japan Advanced Institute of Science and TechnologyIshikawaJapan

User profiles representing users’preferences and interests play an important role in many applications of personalized *** the rapid growth of social platforms,there is a critical need for efficient solutions to learn user profiles from the information they shared on social platforms so as to improve the quality of recommendation *** problem of user profile learning is significantly challenging due to difficulty in handling data from multiple sources,in different formats and often associated with *** this paper,we introduce an integrated approach that combines advanced Machine learning techniques with evidential reasoning based on Dempster-Shafer theory of evidence for user profiling and *** developed methods for user profile learning and multi-criteria collaborative filtering are demonstrated with experimental results and analysis that show the effectiveness and practicality of the integrated approach.A proposal for extending multi-criteria recommendation systems by incorporating user profiles learned from different sources of data into the recommendation process so as to provide better recommendation capabilities is also highlighted.

关键词： Machine learning Dempster-Shafer theory of evidence user profiles personalized recommendation preferences

Synchronous rectal adenocarcinoma and intestinal mantle cell lymphoma:A case report

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世界临床病例杂志 2023年第24期11卷 5772-5779页

作者： Kim-van Vu nguyen-van Trong nguyen-thi Khuyen Do Huyen Nga Hoang Anh nguyen Tien Trung PhamTrung Thong nguyen Minh Duc Department of General Surgery Vietnam National Cancer HospitalHa Noi 100000Viet Nam Department of Practical Surgery Hanoi Medical UniversityHa Noi 100000Viet Nam Department of Oncology Hanoi Medical UniversityHa Noi 100000Viet Nam Pathology and Molecular Biology Center Vietnam National Cancer HospitalHa Noi 100000Viet Nam Department of Hematologic Oncology Vietnam National Cancer HospitalHa Noi 100000Viet Nam Department of Radiology Pham Ngoc Thach University of MedicineHo Chi Minh City 700000Viet Nam

BACKGROUND Mantle cell lymphoma(MCL)of the gastrointestinal tract is a rare malignancy,accounting for about 0.2%of malignant colorectal *** synchronous with rectal adenocarcinoma is extremely *** know of only a few cases reported in the *** describe the case of a patient with synchronous rectal adenocarcinoma and intestinal *** SUMMARY A 63-year-old man was admitted to our hospital due to abdominal pain and hematochezia over the past *** patient was diagnosed with middle rectal cancer cT2N0M0 and underwent ***,we found a large tumor in the small intestine during *** patient underwent total mesorectal excision for rectal cancer and resectioning of the ileal segment containing the large *** and immunohistochemistry revealed the presence of both rectal adenocarcinoma and pathognomonic MCL stage IIE presenting as multiple lymphomatous *** patient subsequently underwent RDHAP/RCHOP chemotherapy and was maintained with rituximab.A Positron Emission Tomography and Computed Tomography(PET/CT)scan showed that the disease responded well to treatment without tumor-increased metabolism in the gastrointestinal *** Synchronous rectal adenocarcinoma and intestinal MCL presenting as multiple lymphomatous polyposis are extremely *** is often discovered fortuitously when rectal cancer is *** coexistence of these tumors poses treatment challenges.

关键词： Mantle cell lymphoma Multiple lymphomatous polyposis Rectal adenocarcinoma Synchronous Gastrointestinal tract Case report

Applying Wide & Deep learning Model for Android Malware Classification

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Computer Systems Science & Engineering 2023年第6期45卷 2741-2759页

作者： le Duc Thuan Pham van Huong Hoang van Hiep nguyen Kim Khanh Ha Noi University of Science and Technology Ha Noi100000Viet Nam Academy of Cryptography Techniques Ha Noi100000Viet Nam

Android malware has exploded in popularity in recent years,due to the platform’s dominance of the mobile *** the advancement of deep learning technology,numerous deep learning-based works have been proposed for the classification of Android *** learning technology is designed to handle a large amount of raw and continuous data,such as image content ***,it is incompatible with discrete features,i.e.,features gathered from multiple ***,if the feature set is already well-extracted and sparsely distributed,this technology is less effective than traditional machine *** the other hand,a wide learning model can expand the feature set to enhance the classification *** maximize the benefits of both methods,this study proposes combining the components of deep learning based on multi-branch CNNs(Convolutional Network Neural)with wide learning *** feature set is evaluated and dynamically partitioned according to its meaning and generalizability to subsets when used as input to the model’s wide or deep *** proposed model,partition,and feature set quality are all evaluated using the K-fold cross validation method on a composite dataset with three types of features:API,permission,and raw *** accuracy with Wide and Deep CNN(WDCNN)model is 98.64%,improved by 1.38%compared to RNN(Recurrent Neural Network)model.

关键词： Wide and deep(W&D)learning convolutional neural network image feature raw features generalized features