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Unknown DDoS Attack Detection with Fuzzy C-Means Clustering and Spatial Location Constraint Prototype Loss

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Computers, Materials & Continua 2024年第2期78卷 2181-2205页

作者： Thanh-Lam nguyen HaoKao Thanh-tuan nguyen Mong-Fong Horng Chin-Shiuh Shieh Department of Electronic Engineering National Kaohsiung University of Science and TechnologyKaohsiung807618Taiwan Department of Electronic and Automation Engineering Nha Trang UniversityNha Trang650000Vietnam

Since its inception,the Internet has been rapidly *** the advancement of science and technology and the explosive growth of the population,the demand for the Internet has been on the *** applications in education,healthcare,entertainment,science,and more are being increasingly deployed based on the ***,malicious threats on the internet are on the rise as *** Denial of Service(DDoS)attacks are among the most common and dangerous threats on the internet *** scale and complexity of DDoS attacks are constantly *** Detection Systems(IDS)have been deployed and have demonstrated their effectiveness in defense against those *** addition,the research of Machine Learning(ML)and Deep Learning(DL)in IDS has gained effective results and significant ***,one of the challenges when applying ML and DL techniques in intrusion detection is the identification of unknown *** attacks,which are not encountered during the system’s training,can lead to misclassification with significant *** this research,we focused on addressing the issue of Unknown Attack Detection,combining two methods:Spatial Location Constraint Prototype Loss(SLCPL)and Fuzzy C-Means(FCM).With the proposed method,we achieved promising results compared to traditional *** proposed method demonstrates a very high accuracy of up to 99.8%with a low false positive rate for known attacks on the Intrusion Detection Evaluation Dataset(CICIDS2017)***,the accuracy is also very high,reaching 99.7%,and the precision goes up to 99.9%for unknown DDoS attacks on the DDoS Evaluation Dataset(CICDDoS2019)*** success of the proposed method is due to the combination of SLCPL,an advanced Open-Set Recognition(OSR)technique,and FCM,a traditional yet highly applicable clustering *** has yielded a novel method in the field of unknown attack *** further expands the trend of applying DL and M

关键词： Cybersecurity DDoS unknown attack detection machine learning deep learning incremental learning convolutional neural networks(CNN) open-set recognition(OSR) spatial location constraint prototype loss fuzzy c-means CICIDS2017 CICDDoS2019

EP Aquarii:A New Picture of the Circumstellar Envelope

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Research in Astronomy and Astrophysics 2024年第3期24卷 83-105页

作者： Pham T.Nhung Do T.Hoai Pierre Darriulat Pham tuan-anh Pham N.Diep nguyen B.Ngoc Tran T.Thai Department of Astrophysics Vietnam National Space CenterVietnam Academy of Science and Technology18Hoang Quoc VietNghia DoCau GiayHa Noivietnam

New analyses of earlier ALMA observations of oxygen-rich AGB star EP Aquarii are presented,which complete a previously published analysis and offer a different interpretation of the morpho-kinematics of the circumstellar *** birth of the equatorial density enhancement(EDE)is shown to occur very close to the star where evidence for rotation has been *** to the star and where outflows have been observed:their interaction with the gas of the nascent EDE is seen to play an important role in the development of the wind and the evolution of its radial velocity from 8 to 10 km s^(-1) on the polar symmetry axis to~2 km s^(-1) at the *** implies complex morpho-kinematics:making reliable interpretations with reasonable confidence is *** particular,it questions an earlier interpretation implying the presence of a white dwarf companion orbiting the star at an angular distance of -0″4 from its *** proposes instead an interpretation in terms of a standard mass ejection associated with a shock wave leaving a void of emission in its *** Doppler velocity wings are seen to consist of two components,the upper velocity end of the global wind,reaching above±12 km s^(-1),and an effective line broadening,confined within 200 mas from the center of the star,reaching above±20 km s^(-1) and interpreted as caused by the pattern of shock waves resulting from the interaction between stellar pulsation and convective cell partition.

关键词： stars AGB and post-AGB-(stars) circumstellar matter-radio lines stars

维普期刊数据库

安庆-贵池矿集区宝树尖铜多金属矿床成因:来自岩石地球化学及年代学的约束

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岩石学报 2020年第1期36卷 184-204页

作者：汪海赵壮杨晓勇古黄玲郑荥 nguyen tuan anh 中国科学技术大学地球和空间科学学院湖南工业大学安徽省地勘局324地质队

宝树尖铜多金属矿床位于长江中下游成矿带安庆-贵池矿集区,是一个新发现的矽卡岩型矿床。本文主要通过岩石地球化学和年代学方法来解释矿床的成因。锆石U-Pb年代学研究表明,宝树尖岩体形成于148.6±3.2Ma,是长江中下游燕山晚期的产物,... 详细信息

宝树尖铜多金属矿床位于长江中下游成矿带安庆-贵池矿集区,是一个新发现的矽卡岩型矿床。本文主要通过岩石地球化学和年代学方法来解释矿床的成因。锆石U-Pb年代学研究表明,宝树尖岩体形成于148.6±3.2Ma,是长江中下游燕山晚期的产物,为长江中下游成矿带内发现的一个较早的中酸性含矿侵入体。对于该成矿岩体及矿床的深入研究,将为区内燕山期岩浆活动及成矿提供一个不可多得的范例。岩石属于高钾钙碱性、钙碱性系列,地球化学特征显示为埃达克质岩;矿区矿石金属硫化物以方铅矿、闪锌矿、黄铜矿和黄铁矿为主,非金属矿物有透辉石、石榴石、透闪石、石英、钠长石、方解石、绿泥石和绿帘石等。矿区侵入岩主要由闪长岩和闪长玢岩组成,总体上具有高的全碱含量,低的Al2O3、TiO 2、Fe2O3^T和P2O5含量,富集大离子亲石元素(U、Rb、Sr)和高场强元素(Nb、Ta、Ti),轻稀土富集、重稀土亏损。岩石具有高的La/Yb、Sr/Y比值,低的Yb、Y含量,属于埃达克质岩。锆石稀土元素配分图显示典型的轻稀土亏损、重稀土富集。锆石Ti温度计表明岩石形成的平均温度为674.3℃。全岩Sr-Nd-Pb同位素特征表明岩石起源于俯冲洋壳的部分熔融。矿石黄铁矿δ34 S变化范围为7.6‰~9.6‰,表明成矿物质来源于岩浆热液和地层。锆石Eu异常特征和Ce^4+/Ce^3+比值表明形成岩石的岩浆具有高氧逸度,这有利于Cu、Au、Zn等成矿物质的迁移。结合区域地质背景,我们认为宝树尖矽卡岩型矿床的形成过程是:燕山期太平洋板块向中国东部俯冲,导致板片部分熔融产生埃达克质岩浆,最后经埃达克质岩浆分异形成的含矿气水热液在地壳浅部与上覆寒武系灰岩发生接触交代作用。

关键词：宝树尖多金属矿床安庆贵池矿集区埃达克岩锆石U-Pb定年 Sr-Nd-Pb同位素俯冲洋壳长江中下游

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Reviewing Stability Criteria for Positive Homogeneous Systems and Adding One for Discrete-Time Cases with Degree Less Than One

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Circuits and Systems 2024年第1期15卷 1-11页

作者： nguyen Quang tuan Faculty of Information Technology Nha Trang University Khanh Hoa Vietnam

The article synthesizes and presents the results regarding the stability of positive homogeneous systems that have been researched and published in recent years. Next, we provide a sufficient condition for global exponential stability in the case of discrete-time positive homogeneous systems with an order less than one with time-varying delays.

关键词： Exponential Stability Homogeneous Systems Positive Systems Positive Homogeneous Systems

Wedelolactone from Eclipta prostrata(L)*** inflammation and improves insulin resistance

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Asian Pacific Journal of Tropical Biomedicine 2024年第6期14卷 253-258页

作者： Trinh Tat Cuong Duong Duc Thien Hoang Hai Yen nguyen anh Duc Trinh Quang Nam Do Viet Khanh Key Laboratory for Enzyme and Protein Technology Vietnam National University University of ScienceHanoiVietnam Faculty of Biology Vietnam National University University of ScienceHanoiVietnam Hanoi University of Pharmacy HanoiVietnam Vinschool HanoiVietnam

Objective:To evaluate the effects of wedelolactone,a major flavonoid from Vietnamese Eclipta prostrata(L)L.,on inflammation and insulin ***:Wedelolactone was extracted from the leaves of Vietnamese Eclipta prostrata(L.)*** methanol by *** effects of wedelolactone on lipopolysaccharide(LPS)-induced cytokine production,reactive oxygen species(ROS)generation,and nicotinamide adenine dinucleotide phosphate(NADPH)oxidase activities in Raw 264.7 cells were measured by enzyme-linked immunosorbent assay(ELISA),specific immunofluorescent dyes and luminometric analysis,*** addition,its effects on glucose uptake and the protein expression of insulin receptor substrate 1(IRS1)and glucose transporter 4(GLUT4)were examined in 3T3-L1 cells by immunofluorescent dyes and Western ***:Wedelolactone at 30μg/mL significantly inhibited LPS-induced production of tumor necrosis factor-α,interleukin(IL)-6,and IL-8(P<0.01)with no noticeable effects on IL-10 *** also reduced ROS generation and NADPH oxidase activities in LPS-stimulated Raw 264.7 cells(P<0.01).Furthermore,wedelolactone showed anti-insulin resistance activity,as evidenced by improved glucose uptake and the upregulated expression of IRS1 and GLUT4 in 3T3-L1 cells(P<0.01).Conclusions:Wedelolactone exhibits anti-inflammation and anti-insulin resistance effects,which may be used for the treatment of diabetes and inflammation-associated diseases.

关键词： Wedelolactone Eclipta prostrata Inflammatory responses Anti-insulin resistance Diabetes IRS1 GLUT4

Characteristics of the gene encoding pyrroline-5-carboxylate synthase(P5CS) in Vietnamese soybean cultivars(Glycine max ***)

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Characteristics of the gene encoding pyrroline-5-carboxylate...

Optimal Scheduling of Multiple Rail Cranes in Rail Stations with Interference Crane Areas

International Conference on Biology, Environment and Chemistry（ICBEC 2010）

作者： Chu Hoang Mau nguyen Thi Thuy Huong Chu Hoang Lan nguyen tuan anh Le Van Son Chu Hoang Ha Dept.of Genetics Faculty of Biology Thainguyen University Dept.of Genetics Faculty of Biology Vietnam National University of Science Dept.of Environment Faculty of Agricultural Environment Thainguyen University Lab.of Plant Cell Biotechnology Institute of Biotechnology

ISBN: (纸本)9789810886424

This research evaluates the ability of six soybean local cultivars and a control cultivar(DT84) to tolerate severe *** this research,SL5 and SL6 have the most stress tolerance while DT84 and SL1 have the least stress *** have isolated P5CS gene as it relates to stress tolerance by using PCR with *** results show that the size of the P5CS gene of the studied cultivars is 2,148 bp,which encodes for 715 amino *** these proteins are compared with the P5CS proteins of the other species,the result shows that the isolated P5CS proteins have a higher identity than other bean *** are located on the same branch of the phylogenetic ***(Pro) is one of the most accumulated osmolytes in salinity and water deficit conditions in plants.P5CS is a key regulatory enzyme involved in prolin biosynthesis in plants and is subject to feedback inhibition by *** conserved aspartate residue at 126 and the phenylalanine at 129 are involved in the feedback inhibition by Pro binding.A gene encoding a feedback insensitive P5CS enzyme was obtained by mutating the P5CS *** mutation was due to a change of an aspartate at position 125 to alanine in the *** mutated gene was cloned in pBT vector and *** gene will be transfered to plants to increase the level of proline overproduction and to enhance the drought tolerance ability.

关键词： drought,Glycine max,point mutation,P5CS,proline.

来源： cnki会议评论

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Intelligent Automation & Soft Computing 2024年第1期39卷 15-31页

作者： nguyen Vu anh Duy nguyen Le Thai nguyen Huu Tho Faculty of Engineering and Technology Nguyen Tat Thanh UniversityHo Chi Minh City700000Vietnam

In this paper,we consider a multi-crane scheduling problem in rail stations because their operations directly influence the throughput of the rail *** particular,the job is not only assigned to cranes but also the job sequencing is implemented for each crane to minimize the makespan of cranes.A dual cycle of cranes is used to minimize the number of working cycles of *** rail crane scheduling problems in this study are based on the movement of *** consider not only the gantry moves,but also the trolley moves as well as the rehandle cases are also included.A mathematical model of multi-crane scheduling is *** traditional and parallel simulated annealing(SA)are adapted to determine the optimal scheduling *** examples are conducted to evaluate the applicability of the proposed *** of the proposed parallel SA is done by comparing it to existing previous *** of numerical computation highlighted that the parallel SA algorithm outperformed the SA and gave better solutions than other considered algorithms.

关键词： Multi-crane scheduling logistics containers makespan rail stations

Optical Sum Frequency Generation Image of Rice Grains

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Journal of Biomaterials and Nanobiotechnology 2012年第2期3卷 286-291页

作者： Hongyan Li Yoshihiro Miyauchi nguyen anh tuan Goro Mizutani Mikio Koyano Japan Advanced Institute of Science and Technology 1-1 Asahidai Nomi Ishikawa 923-1292 Japan

We observed optical sum frequency generation (SFG) images of cross-sections of glutinous rice grains, in order to test a possibility of the SFG microscopy as a tool for monitoring polysaccharide species in rice grains. The SFG response in the CH vibration range was the most intense in the crush cell layer at the edge of the endosperm adjacent to the embryo probably due to optical reflection and scattering effectby the rugged dielectric structure of the crush cell layer. The SFG spectra as a function of the infrared wavelength depended on the measurement position in the endosperm. The SFG results were compared with those by Raman and infrared spectroscopies for the same samples.

关键词： Optical Sum Frequency Generation Microscopy Oryzaglutinosa (Rice) Amylopectin Starch Crush Cell Layer Endosperm

Is convenience really king? Comparative evaluation of catastrophic costs due to tuberculosis in the public and private healthcare sectors of Viet Nam: a longitudinal patient cost study

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贫困所致传染病(英文) 2024年第2期13卷 1-12页

作者： nguyen Hoa Binh Quang Vo Luan nguyen Forse Rachel Jeanette Wiemers Anja Maria Christine Huynh Huy Ba Dong Thuy Thi Thu Phan Yen Thi Hoang Creswell Jacob Dang Thi Minh Ha nguyen Lan Huu Shedrawy Jad L?nnroth Knut nguyen tuan Dinh Van Dinh Luong Annerstedt Kristi Sidney Codlin Andrew James National Lung Hospital Ha Noi Viet Nam Friends for International TB Relief Ha Noi Viet Nam Department of Global Public Health WHO Collaboration Centre On Tuberculosis and Social Medicine Karolinska Institute Stockholm Sweden Stop TB Partnership Geneva Switzerland Pham Ngoc Thach Hospital Ho Chi Minh City Viet Nam

Background In Viet Nam, tuberculosis (TB) represents a devastating life-event with an exorbitant price tag, partly due to lost income from daily directly observed therapy in public sector care. Thus, persons with TB may seek care in the private sector for its flexibility, convenience, and privacy. Our study aimed to measure income changes, costs and catastrophic cost incurrence among TB-affected households in the public and private *** Between October 2020 and March 2022, we conducted 110 longitudinal patient cost interviews, among 50 patients privately treated for TB and 60 TB patients treated by the National TB Program (NTP) in Ha Noi, Hai Phong and Ho Chi Minh City, Viet Nam. Using a local adaptation of the WHO TB patient cost survey tool, participants were interviewed during the intensive phase, continuation phase and post-treatment. We compared income levels, direct and indirect treatment costs, catastrophic costs using Wilcoxon rank-sum and chi-squared tests and associated risk factors between the two cohorts using multivariate *** The pre-treatment median monthly household income was significantly higher in the private sector versus NTP cohort (USD 868 vs USD 578;P=0.010). However, private sector treatment was also significantly costlier (USD 2075 vs USD 1313;P=0.005), driven by direct medical costs which were 4.6 times higher than costs reported by NTP participants (USD 754 vs USD 164;P<0.001). This resulted in no significant difference in catastrophic costs between the two cohorts (Private: 55% vs NTP: 52%;P=0.675). Factors associated with catastrophic cost included being a single-person household [adjusted odds ratio [(aOR=13.71; 95% confidence interval (CI): 1.36–138.14;P=0.026], unemployment during treatment (aOR=10.86; 95%CI: 2.64–44.60;P<0.001) and experiencing TB-related stigma (aOR=37.90; 95%CI: 1.72–831.73;P=0.021).Conclusions Persons with TB in Viet Nam face similarly high risk of catastrophic costs whether treated in the

关键词： Tuberculosis Patient cost Catastrophic cost Private sector Comparative analysis Viet Nam