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Malicious Traffic Detection in IoT and local Networks Using Stacked Ensemble Classifier

Computers, Materials & Continua 2022年第4期71卷 489-515页

作者： R.D.Pubudu l.Indrasiri Ernesto lee Vaibhav Rupapara Furqan Rustam Imran Ashraf School of Computing and Mathematics Charles Sturt UniversityAustralia Department of Computer Science Broward CollegeBroward CountyFloridaUSA School of Computing and Information Sciences Florida International UniversityUSA Department of Computer Science Khwaja Fareed University of Engineering and Information TechnologyRahim Yar KhanPakistan Department of Information and Communication Engineering Yeungnam UniversityGyeongsan-si38541Korea

Malicious traffic detection over the internet is one of the challenging areas for researchers to protect network infrastructures from any malicious *** shortcomings of a network system can be leveraged by an attacker to get unauthorized access through malicious *** from such attacks requires an efficient automatic system that can detect malicious traffic timely and avoid system ***,many automated systems can detect malicious activity,however,the efficacy and accuracy need further improvement to detect malicious traffic from multi-domain *** present study focuses on the detection of malicious traffic with high accuracy using machine learning *** proposed approach used two datasets UNSW-NB15 and IoTID20 which contain the data for IoT-based traffic and local network traffic,*** datasets were combined to increase the capability of the proposed approach in detecting malicious traffic from local and IoT networks,with high *** merging both datasets requires an equal number of features which was achieved by reducing feature count to 30 for each dataset by leveraging principal component analysis(PCA).The proposed model incorporates stacked ensemble model extra boosting forest(EBF)which is a combination of tree-based models such as extra tree classifier,gradient boosting classifier,and random forest using a stacked ensemble *** results show that EBF performed significantly better and achieved the highest accuracy score of 0.985 and 0.984 on the multi-domain dataset for two and four classes,respectively.

关键词： Stacked ensemble PCA malicious traffic detection classification machine learning

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A Comprehensive Pipeline for Complex Text-to-Image Synthesis

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Journal of Computer Science & Technology 2020年第3期35卷 522-537页

作者： Fei Fang Fei luo Hong-Pan Zhang Hua-Jian Zhou Alix l.H.Chow Chun-Xia Xiao School of Computer Science Wuhan UniversityWuhan 430072China Xiaomi Technology Co.lTD Beijing 100085China

Synthesizing a complex scene image with multiple objects and background according to text description is a challenging *** needs to solve several difficult tasks across the fields of natural language processing and computer *** model it as a combination of semantic entity recognition,object retrieval and recombination,and objects’status *** reach a satisfactory result,we propose a comprehensive pipeline to convert the input text to its visual *** pipeline includes text processing,foreground objects and background scene retrieval,image synthesis using constrained MCMC,and ***,we roughly divide the objects parsed from the input text into foreground objects and background ***,we retrieve the required foreground objects from the foreground object dataset segmented from Microsoft COCO dataset,and retrieve an appropriate background scene image from the background image dataset extracted from the ***,in order to ensure the rationality of foreground objects’positions and sizes in the image synthesis step,we design a cost function and use the Markov Chain Monte Carlo(MCMC)method as the optimizer to solve this constrained layout ***,to make the image look natural and harmonious,we further use Poisson-based and relighting-based methods to blend foreground objects and background scene image in the post-processing *** synthesized results and comparison results based on Microsoft COCO dataset prove that our method outperforms some of the state-of-the-art methods based on generative adversarial networks(GANs)in visual quality of generated scene images.

关键词： image synthesis scene generation text-to-image conversion Markov Chain Monte Carlo(MCMC)

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EXPERIMENTAl RESEARCH AND NUMERICAl SIMUlATION OF lASER SHOCK FORMING OF TA2 TITANIUM SHEET

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Acta Metallurgica Sinica(English letters) 2006年第5期19卷 347-354页

作者： F. Wang Z. Q. Yao J. Hu Q.l. Deng School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200030 China

laser shock forming （ISF） was a new technique realized by applying an impulsive pressure generated by laser-induced shock wave on the surface of metal sheet. lSF of metal sheet was investigated with experiments and numerical simulation. The basic theories were introduced; the surface quality and deformation of the processed titanium sample （TA2） were examined; ABAQUS was used to simulate ISF and the central displacement of the shocked region was measured and compared with the simulation. Overlapped ISF treatment was experimentally carried out to produce groove and simulation. The results showed that the surface quality and the microstructure with single laser pulse had no remarkable change, and ablation was observed on the surface of the sample with overlapped pulses. The deformation observed in the numerical simulation agreeed with that observed in the experimental measurement quite well.

关键词： laser shock forming numerical simulation surface quality deformation

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Herb-drug enzyme-mediated interactions and the associated experimental methods： a review

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Journal of Traditional Chinese Medicine 2016年第3期36卷 392-408页

作者： li Bo Zhao Baosheng liu Yang Tang Mingmin lǚe Beiran luo Zhiqiang Zhai Huaqiang School of Chinese Materia Medica Beijing University of Chinese Medicine Beijing 100102 China Center of Scientific and Experiment Beijing niversity of Chinese Medicine Beijing 100029 China Beijing Key laboratory of Protection and Utilization of Chinese Medicine Beijing Normal UniversityBeijing 100875 China

OBJECTIVE: To review the interactions between herbs and widely used drugs and summarize the associated experimental ***: Definite herb-drug interactions were obtained by searching Pub Med, other large overseas databases and summarizing new researches from China. We summarize some methods to assess the interaction between herbs and drugs involving microsomal, cell culture and animal experiments, and clinical trials, classifying this method as single ingredient herbs, crude herb extracts, andherbal ***: Many herbs interact with drugs through a complex cytochrome P450 and/or P-glycoprotein mechanism. Herb-induced enzyme inhibition and/or induction may result in enhanced and / or decreased plasma, tissue, urine and bile drug concentrations, leading to a change in a drug's pharmacokinetic parameters and resulting in the improper treatment of patients and potentially severe side effects. Use of an appropriate method for comprehensively assessing herb-drug interactions can minimize clinical risks. Different methods were used by researchers to assess the pharmacological changes of drugs in vivo and in vitro and the mechanisms of the interactions from microsomal, cell culture and animal experiments, and clinical trials are discussed in this ***: Co-medication with herbs can result in changes in pharmacological effects of many drugs. This review describes the assessment of single-ingredient herbs, crude herb extracts, and herbal formulae. When choosing a research method to investigate herb-drug interactions, the properties of the drugs and herbs should be considered.

关键词： Herb-drug interaction Metabolism Cytochrome P-450 enzyme system P-glycoprotein Review

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Monitoring changes in the Menik Farm IDP camps in Sri lanka using multi-temporal very high-resolution satellite data

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International Journal of Digital Earth 2011年第S1期4卷 91-106页

作者： T.Kemper M.Jenerowicz l.Gueguen D.Poli P.Soillea Joint Research Centre Institute for the Protection and Security of the Citizen(IPSC)European CommissionVia E.Fermi 2749I-21027IspraItaly Space Research Centre Polish Academy of SciencesBartycka 18A00-716WarsawPoland

This paper presents the results of the application of mathematical morphology for the automatic quantification of the number of tents and the detection of changes in the Menik Farm IDP camp in Sri *** tents were retrieved using an area-constraint top-hat opening applied to WorldView-1 *** counting of tents was based on the centroids of the automatically detected structures indicating an overall number of 25,150 tents on the 26 June *** comparison with a visual interpretation produced an R2 of 0.97 with an error of 1.25%.In addition,an automated detection of changes inside a camp area was *** comparison of the satellite image of 26 June 2009(WorldView-1)and an image of 28 February 2010(GeoEye-1)is based on mutual(mixed)information metric,after using morphological image processing techniques and previously specified *** are observed on a terrain of around 15.2%of the total camp area and 3813 of previously detected structures disappeared in a period of 8 months.

关键词： refugee/IDP monitoring mathematical morphology change detection GeoEye-1 WorldView-1 image processing

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IMPROVING THE SURFACE PROPERTY OF TC4 AllOY BY lASER NITRIDING AND ITS MECHANISM

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Acta Metallurgica Sinica(English letters) 2006年第2期19卷 151-156页

作者： Y.l. Yang G.J. Zhao D. Zhang C.S. liu Gollege of Sdence Northeastern University Shenyang 110004 Ghina College of Material and Metallurgy Northeastern University Shenya g 110004 China

The mixing technology of laser and heated nitrogen was applied to improve the surface hardness of titanium alloy （ TC4 ）. The samples were nitrided with laser power density of 6.S × 10^6SW. cm^-2, the scanning speed varioas from 100 to 500mm ·min^-1. The nitrogen gas was pre-heated to 300℃ to accelerate the nitriding process. Some interested samples were tested with XRD method （X-ray diffraction） to analyze the composition of nitrides, and the surface hardness of HV was measured. The results show that TiN and Ti2N were formed on the surface of Ti alloy with proper nitriding parameters, but TiN is the main composition. The surface hardness increased by three times, which is from the original value of 269to 794kg·mm^-2. The mechanism of the mixing technology is considered mainly of the activation of nitrogen by laser power and the pre-heated process which accelerated the nitriding process. The nitridation process can be considered as six steps given in detail. The result by analyzing the mechanism of improving the surface property of TiAl alloy shows the improvement of surface property due to two factors： the first reason is the result of laser annealing, and the second one is the formation of TiN.

关键词： laser nitridation surface property Ti alloy

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legalon-SIl downregulates HCV core and NS5A in human hepatocytes expressing full-length HCV

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World Journal of Gastroenterology 2011年第13期17卷 1694-1700页

作者： Marjan Mehrab-Mohseni Hossein Sendi Nury Steuerwald Sriparna Ghosh laura W Schrum Herbert l Bonkovsky The liver-Biliary-Pancreatic Center Cannon Research Center Carolinas Medical Center Charlotte NC 28203 United States Department of Biology University of North Carolina at Charlotte Charlotte NC 28223 United States Department of Medicine University of North Carolina at Chapel Hill Chapel Hill NC United States

AIM: To determine the effect of legalon-SIl (lS) on hepatitis C virus (HCV) core and NS5A expression and on heme oxygenase-1 (HMOX-1) and its transcriptional regulators in human hepatoma cells expressing full length HCV genotype 1b. METHODS: CON1 cells were treated with 50 μmol/l or 200 μmol/l lS. Cells were harvested after 2, 6 and 24 h. HCV RNA and protein levels were determined by quantitative real-time polymerase chain reaction and Western blotting, respectively. RESUlTS: HCV RNA (core and NS5A regions) wasdecreased after 6 h with lS 200 μmol/l (P l/l lS decreased HCV RNA levels [core region (by 55% and 88%, respectively) and NS5A region (by 62% and 87%, respectively) after 24 h compared with vehicle (dimethyl sulphoxide) control (P larly HCV core and NS5A protein were decreased (by 85%, P ly) by lS 200 μmol/l. Bach1 and HMOX-1 RNA were also downregulated by lS treatment (P le Nrf2 protein was increased (P lUSION: Our results demonstrate that treatment with lS downregulates HCV core and NS5A expression in CON1 cells which express full length HCV genotype 1b, and suggests that lS may prove to be a valuable alternative or adjunctive therapy for the treatment of HCV infection.

关键词： Hepatitis Hepatitis C virus Silymarin Silybin Genotype Huh7.5 CON1

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The ρ-variation of the Hermitian Riesz Transform

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Acta Mathematica Sinica,English Series 2010年第10期26卷 1827-1838页

作者： Raquel CRESCIMBENI Francisco Javier MARTíN-REYES Alberto DE lA TORRE José l.TORREA Departamento de Matemática Universidad Nacional del Comahue Facultad de Economía y Administración Departamento de Análisis Matemático Facultad de Ciencias Universidad de Málaga Facultad de Ciencias Universidad Autónoma de Madrid ICMAT-CSIC-UAM-UCM-UC3M

In this paper we prove the behaviour in weighted lp spaces of the oscillation and variation of the Hilbert transform and the Riesz transform associated with the Hermite operator of dimension 1. We prove that this operator maps lP（R, w（x）dx） into itself when w is a weight in the Ap class for 1 〈 p 〈 ∞. For p = 1 we get weak type for the A1 class. Weighted estimated are also obtained in the extreme case p = ∞.

关键词： Oscillation-p-variation-singular integral-Hermite operator

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QUANTITATIVE STUDY ON GAlVANIC EFFECTS DURING CAVITATION DAMAGE OF 1Cr13 STAINlESS STEEl

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Acta Metallurgica Sinica(English letters) 2003年第1期16卷 15-21页

作者： X.Bai D.B.Sun H.Y.Yu X.l.Zhang Corrosion and Protection Cent. Univ. of Sci. and Technol. Beijing Beijing 100083 China

The influence of the surface galvanic effects of 1Cr13 SS during cavitation damage has been investigated in NaCl solutions. The results show that the solution concentration and area ratio of bubble unacted surface to the bubble-acted surface greatly influence the cavitation damage of the alloy. The surface galvanic effects can speed up the dissolution rate of the alloy, and the mass loss per area of the alloy increases linearly with the area ratio of bubble unacted surface to the bubble acted surface of the alloy.

关键词： galvanic effect cavitation damage area ratio mass loss

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How good is endoscopic ultrasound for TNM staging of gastric cancers? A meta-analysis and systematic review

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World Journal of Gastroenterology 2008年第25期14卷 4011-4019页

作者： Srinivas Reddy Puli Jyotsna Batapati Krishna Reddy Matthew l Bechtold Mainor R Antillon Jamal A Ibdah Division of Gastroenterology and Hepatology University of Missouri-Columbia

AIM: To evaluate the accuracy of endoscopic ultrasound (EUS) for staging of gastric cancers. METHODS: Only EUS studies confirmed by surgery were selected. Only studies from which a 2 × 2 table could be constructed for true positive, false negative, false positive and true negative values were included. Articles were searched in Medline, Pubmed, Ovid journals, Cumulative index for nursing & allied health literature, International pharmaceutical abstracts, old Medline, Medline nonindexed citations, and Cochrane control trial registry. Two reviewers independently searched and extracted data. The differences were resolved by mutual agreement. 2 × 2 tables were constructed with the data extracted from each study. Meta-analysis for the accuracy of EUS was analyzed by calculating pooled estimates of sensitivity, specifi city, likelihood ratios, and diagnostic odds ratio. Pooling was conducted by both the Mantel-Haenszel method (fi xed effects model) and DerSimonian laird method (random effects model). The heterogeneity of studies was tested using Cochran's Q test based upon inverse variance weights. RESUlTS: Initial search identified 1620 reference articles and of these, 376 relevant articles were selected and reviewed. Twenty-two studies (n = 1896) which met the inclusion criteria were included in this analysis. Pooled sensitivity of T1 was 88.1% (95% CI: 84.5-91.1) and T2 was 82.3% (95% CI: 78.2-86.0). For T3, pooled sensitivity was 89.7% (95% CI: 87.1-92.0). T4 hada pooled sensitivity of 99.2% (95% CI: 97.1-99.9). For nodal staging, the pooled sensitivity for N1 was 58.2% (95% CI: 53.5-62.8) and N2 was 64.9% (95% CI: 60.8-68.8). Pooled sensitivity to diagnose distant metastasis was 73.2% (95% CI: 63.2-81.7). The P for chi-squared heterogeneity for all the pooled accuracy estimates was > 0.10. CONClUSION: EUS results are more accurate with advanced disease than early disease. If EUS diagnoses advanced disease, such as T4 disease, the patient is 500 times more likely to h

关键词： Gastric cancer Staging Meta-analysis Endoscopic ultrasound

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