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An efficient botnet detection approach based on feature learning and classification

Journal of Control and Decision 2023年第1期10卷 40-53页

作者： b.padmavathi b.Muthukumar Department of Computer Science and Engineering Sathyabama Institute of Science and TechnologyChennaiIndia Computer Science and Engineering Easwari Engineering CollegeChennaiIndia DMI College of Engineering ChennaiIndia

bot detection is considered a crucial security issue that is extensively analysed in various existingapproaches. Machine Learning is an efficient way of botnet attack detection. bot detectionis the major issue faced by the existing system. This research concentrates on adopting a graphbasedfeature learning process to reduce feature dimensionality. The incoming samples arecorrectly classified and optimised using an Adaboost classifier with an improved grey wolfoptimiser (g-AGWO). The proposed IGWO optimisation approach is adopted to fulfil the multiconstraintissues related to bot detection and provide better local and global solutions (to satisfyexploration and exploitation). The extensive results show that the proposed g-AGWO model outperformsexisting approaches to reduce feature dimensionality, under-fitting/over-fitting andexecution time. The error rate prediction shows the feasibility of the given model to work over thechallenging environment. This model also works efficiently towards the unseen data to achievebetter generalization.

关键词： botnet machine learning Adaboost grey wolf optimisation exploration exploitation

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Polarized Ketene Dithioacetals-Versatile Synthons for Different Heterocycles

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Chinese Journal of Chemistry 2012年第8期30卷 1886-1892页

作者： Venkatesh b.C. Premakumari C. Padmaja A. padmavathi V. Department of Chemistry Sri Venkateswara UniversityTirupati-517502Andhra PradeshIndia

The reactivity of polarized ketene dithioacetals to develop a variety of heterocycles under different conditions was studied.

关键词： polarized ketene dithioacetals thienothiophenes bis-benzoxazolyl/benzothiazolyl/benzimidazolyl-pyrazolidine diones/isoxazolidinediones/pyrimidinetriones/thioxopyrimidinediones cyclocondensation

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Haplotyping of Rice Genotypes Using Simple Sequence Repeat Markers Associated with Salt Tolerance

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Rice science 2016年第6期23卷 317-325页

作者： A.D.CHOWDHURY G.HARITHA T.SUNITHA S.L.KRISHNAMURTHY b.DIVYA G.padmavathi T.RAM N.SARLA ICAR-Indian Institute of Rice Research Division of Crop Improvement Central Soil Salinity Research Institute

Salt stress is a major problem in most of the rice growing areas in the world. A major QTLSaltol associated with salt tolerance at the seedling stage has been mapped on chromosome 1 in *** study aimed to characterize the haplotype diversity at Saltol and additional QTLs associated withsalt tolerance. Salt tolerance at the seedling stage was assessed in 54 rice genotypes in the scale of 1to 9 score at EC = 10 dSm^-1 under controlled environmental conditions. Seven new breeding linesincluding three KMR3/O. rufipogon introgression lines showed similar salt tolerant ability as FL478 andcan be good sources of new genes/alleles for salt tolerance. Simple sequence repeat （SSR） markerRM289 showed only two alleles and RM8094 showed seven alleles. Polymorphic information contentvalue varied from 0.55 for RM289 to 0.99 for RM8094 and RM493. based on 14 SSR markers, the 54lines were clearly separated into two major clusters. Fourteen haplotypes were identified based onSaltol linked markers with FL478 as the reference. Alleles of RM8094 and RM3412 can discriminatebetween the salt tolerant and susceptible genotypes clearly and hence can be useful in marker-assistedselection at the seedling stage. Other markers RM10720 on chromosome 1 and RM149 and RM264 onchromosome 8 can also distinguish tolerant and susceptible lines but with lesser stringency.

关键词： haplotype rice salt tolerance Saltol simple sequence repeat marker

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Anti-ulcer activity of Ficus religiosa leaf ethanolic extract

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Asian Pacific Journal of Tropical biomedicine 2013年第7期3卷 554-556页

作者： Marslin Gregory b. Divya Revina Ann Mary M. M. Hipolith Viji V. K. Kalaichelvan V. Palanivel Department of pharmacology Annamalai UniversityChidambaram India Centre for the Research and Technology of Agro-Environment and biological Sciences (CITAb) Department of Biology University of MinhoPortugal padmavathi College of Pharmacy and Research Institute Periyanahalli DharmapuriTamilnadu India Department of Nursing Science A.J College of Nursing ChennaiTamilnadu India Department of Phytochemistry Natural Remedies Research lab BangaloreKarnataka India

Objective:To evaluate the anti-ulcer activity and acute toxicity ofFicus religiosa(F. religiosa)leaf ethanolic extract in animal ***:Anti-ulcer activity ofF. religiosaethanolicextract(250 and 500 mg/kg body weight) was studied on stress induced ulcer animal *** was used as standard. The anti-ulcer activity ofF. religiosawas evaluated with thehelp of ulcer area and histopatholgical examination. Preliminary phyto-chemical screeningand acute toxicity studies ofF. religiosaalso carried ***:Results showed that theextract treatments prevented ulcer area and gastric secretion in a dose-dependent *** of 2000 mg/kg extract did not show any acute toxicity in albino mice. Preliminaryphytochemical analysis identified the presence of flavonoids in the ethanolic extract ofF. ***:The extract is non-toxic even at relatively high concentrations. The anti-ulceractivity is probably due to the presence of flavanoids.

关键词： Ficus religiosa Flavonoids Ethanolic extract Ulcer area Ranitidne

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