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Unsupervised intrusion detection system for in-vehicle communication networks

Journal of Safety Science and Resilience 2024年第2期5卷 119-129页

作者： Kabilan N vinayakumar Ravi v sowmya Center for Computational Engineering and Networking(CEN) Amrita School of Artificial InteligenceAmrita Vishwa VidyapeethamCoimbatoreIndia Center for Artificial Intlligence Prince Mohammad Bin Fahd UniversityKhobarSaudi Arabia

In-vehicle communication has been optimized day to day to keep updated of the *** area network(CAN)is used as a standard communication method because of its efficient and reliable ***,CAN is prone to several network level attacks because of its lack in security *** methods have been introduced to incorporate this in *** proposed an unsupervised method of intrusion detection for in-vehicle communication networks by combining the optimal feature extracting ability of autoencoders and more precise clustering using fuzzy C-means(FCM).The proposed method is light weight and requires less computation *** performed an extensive experiment and achieved an accuracy of 75.51%with the ML35o in-vehicle intrusion *** experimental result,the proposed method also works better for other intrusion detection problems like wireless intrusion detection datasets such as WNS-DS with accuracy of 84.05%and network intrusion detection datasets such as KDDCup with accuracy 60.63%,UNSW_NB15 with accuracy 73.62%and Information Security Center of Excellence(Iscx)with accuracy 74.83%.Overall,the proposed method outperforms the existing methods and avoids labeled datasets when training an in-vehicle intrusion detection *** results of the experiment of our proposed method performed on various intru-sion detection datasets indicate that the proposed approach is generalized and robust in detecting intrusions and can be effectively deployed in real time to monitor CAN traffic in vehicles and proactively alert during attacks.

关键词： Controlarea network Intrusiondetection Unsupervised learning Autoencoders Fuzzy C-means

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Spectrum Sensing and AM-FM Decomposition through Synchrosqueezing

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Wireless Engineering and Technology 2013年第3期4卷 134-138页

作者： K. vandhana P. v. S. sowmya P. Roshni K. Divya S. Ashwin K. A. Narayanankutty Department of Electronics and Communication Engineering Amrita Vishwa Vidyapeetham Coimbatore India.

In this paper we have accomplished one of the tasks of cognitive radio i.e. dynamic spectrum sensing by using wavelet based Synchrosqueezing transform [1], a novel technique, which was proposed to analyze a signal in time-frequency plane. The distinctive feature of this transform compared to other techniques is that it enables us to decompose amplitude and frequency modulated signals and allows individual reconstruction of these components. The objective is also to separate the occupied band into amplitude modulated and frequency modulated bands.

关键词： Cognitive Radio Synchrosqueezing AM-FM Spectrum Sensing Time-Frequency Reassignment Empirical Mode Decomposition

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The role of deformations and orientations in an alpha ternary fission of Thorium

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Nuclear Science and Techniques 2022年第6期33卷 1-8页

作者： A.v.Mahesh Babu N.sowmya H.C.Manjunatha N.Dhananjaya Department of Physics BMSIT&MAffiliated to VTUBangaloreKarnataka 560064India Department of Physics Government College for WomenKolarKarnataka 563101India

The alpha ternary fission half-lives of thorium isotopes have been studied using the Coulomb and proximity potential *** role of the deformation effects and the angle of orientation were included during the evaluation of the total *** combinations were identified using cold valley plots of the driving *** half-lives and yields were evaluated using the penetration *** dependence of the logarithmic half-lives on different angles of orientation was *** evaluated alpha ternary fission yield was compared with that of the available experiments with and without *** half-lives obtained in the present work were compared with those of the available *** alpha ternary fission fragments were identified in the isotopes of *** alpha ternary fission half-lives were compared to the binary fission *** binary fission half-lives are dominant in the ^(209-225)Th nuclei,and the ternary fission half-lives are dominant in the isotopes of the ^(226-238)Th nuclei.

关键词： Alpha ternary fission Yield Half-lives Driving potential

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Investigation of Ti6Al4v and AA7075 alloy embedded nanofluid flow over longitudinal porous fin in the presence of internal heat generation and convective condition

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Communications in Theoretical Physics 2020年第2期72卷 23-29页

作者： G sowmya B J Gireesha S Sindhu B C Prasannakumara Department of PG Studies and Research in Mathematics Kuvempu UniversityShankaraghatta-577451KarnatakaIndia Department of Mathematics Davangere UniversityDavangere-577002KarnatakaIndia

The thermal attributes of porous fin due to radiation and natural convection have been carried out in the presence of nanofluid *** geometry of the fin taken for the analysis is rectangular profiled longitudinal *** temperature-dependent internal heat generation condition is also considered along with Darcy’s *** two types of nanofluid containing titanium alloy(Ti6Al4v)and aluminium alloy(AA7075)immersed in water is considered for the *** modelled nonlinear ordinary differential equation is numerically solved by the Runge–Kutta–Fehlberg *** impact of geometric parameter on the heat transfer analysis of the fin due to the flow of both nanofluids is plotted and consequences are physically *** is observed that the presence of the water-based titanium alloy better enhances the fin heat transfer rate.

关键词： alloys nanofluid porous fin heat transfer analysis convective condition internal heat generation

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Pathophysiology and Prevention of Paracentesis-induced Circulatory Dysfunction:A Concise Review

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Journal of Clinical and Translational Hepatology 2020年第1期8卷 42-48页

作者： Anand v Kulkarni Pramod Kumar Mithun Sharma T R sowmya Rupjyoti Talukdar Padaki Nagaraj Rao D Nageshwar Reddy Department of Hepatology Asian Institute of GastroenterologyHyderabadIndia Department of Gastroenterology Asian Institute of GastroenterologyHyderabadIndia

Annually,10%of cirrhotic patients with ascites develop refractory ascites for which large-volume paracentesis(LvP)is a frequently used therapeutic ***,although a safe method,is associated with circulatory dysfunction in a significant percentage of patients,which is termed para-centesis-induced circulatory dysfunction(PICD).PICD results in faster reaccumulation of ascites,hyponatremia,renal impairment,and shorter *** is diagnosed through laboratory results,with increases of>50%of baseline plasma renin activity to a value≥4 ng/mL/h on the fifth to sixth day after *** this review,we discuss the pathophysi-ology and prevention of PICD.

关键词： Refractory ascites Plasma renin activity Large-volume paracentesis Cirrhosis Portal hypertension

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Ophthalmic profile and systemic features of pediatric facial nerve palsy

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Eye Science 2015年第4期30卷 147-150页

作者： Preeti Patil-Chhablani sowmya Murthy Meenakshi Swaminathan Jasti v Ramanamma Children's Eye Care Centre L V Prasad Eye Institute Department of Pediatric Ophthalmology Sankara Eye Hospital Department of Pediatric Ophthalmology and Strabismus Medical Research Foundation

Background: Facial nerve palsy(FNP) occurs less frequently in children as compared to adults but most cases are secondary to an identii able cause. These children may have a variety of ocular and systemic features associated with the palsy and need detailed ophthalmic and systemic ***: This was a retrospective chart review of all the cases of FNP below the age of 16 years, presenting to a tertiary ophthalmic hospital over the period of 9 years, from January 2000 to December ***: A total of 22 patients were included in the study. The average age at presentation was 6.08 years(range, 4 months to 16 years). Only one patient(4.54%) had bilateral FNP and 21 cases(95.45%) had unilateral FNP. Seventeen patients(77.27%) had congenital palsy and of these, five patients had a syndromic association, three had birth trauma and nine patients had idiopathic palsy. Five patients(22.72%) had an acquired palsy, of these, two had a traumatic cause and one patient each had neoplastic origin of the palsy, iatrogenic palsy after surgery for hemangioma and idiopathic palsy. Three patients had ipsilateral sixth nerve palsy, two children were diagnosed to have Moebius syndrome, one child had an ipsilateral Duane's syndrome with ipsilateral hearing loss. Corneal involvement was seen in eight patients(36.36%). Amblyopia was seen in ten patients(45.45%). Neuroimaging studies showed evidence of trauma, posterior fossa cysts, pontine gliosis and neoplasms such as a chloroma. Systemic associations included hemifacial macrosomia, oculovertebral malformations, Dandy Walker syndrome, Moebius syndrome and cerebral ***: FNP in children can have a number of underlying causes, some of which may be life threatening. It can also result in serious ocular complications including corneal perforation and severe amblyopia. These children require a multifaceted approach to their care.

关键词：神经麻痹眼科系统小儿综合征平均年龄听力损失细胞增生

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Cr-induced fusion reactions to synthesize superheavy elements

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Nuclear Science and Techniques 2024年第5期35卷 122-130页

作者： S.Madhu H.C.Manjunatha N.sowmya B.M.Rajesh L.Seenappa R.S.Susheela Department of Physics R V College of EngineeringBangalore 560074India visvesvaraya Technological University BelagaviKarnataka 590018India Department of Physics Government First Grade CollegeSrinivasapurKarnataka 563135India Department of Physics Government First Grade CollegeDevanahallyKarnataka 562110India Department of Physics Government First Grade CollegeMulbagalKarnataka 563131India Department of Physics Government First Grade collegeNanjangudOoty RoadMysore 571301India

We investigated ^(50,52-54)Cr-induced fusion reactions for the synthesis of the superheavy element in the 104≤Z≤122 *** cross sections produced in this investigation using ^(54)Cr projectiles were compared with those obtained in prior *** estimated cross sections from this analysis are consistent with the findings of prior *** the current study,the predicted cross section was found to be 42fb at 236 Mev for ^(53)Cr+^(243)Am,23.2 fb at 236 Mev for ^(54)Cr+^(247)Cm,95.6 fb at 240 Mev for ^(53)Cr+248Bk,and 1.33 fb at 242 Mev for ^(53)Cr+***,these projected cross sections with excitation energy and beam energy will be useful in future Cr-induced fusion reaction investigations.

关键词： Fusion cross sections Compound nucleus formation probability Survival probability Evaporation residue cross sections

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A novel diurnal and seasonal variation analysis of BTEX in Bengaluru urban area

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Research in Cold and Arid Regions 2024年第1期16卷 14-19页

作者： H.N.sowmya M.Dinamani G.P.Shivashankara H.K.Ramaraju B.S.Surendra vijaya v.Shanbhag R.Prajwal Department of Civil Engineering Dayananda Sagar College of EngineeringBangalore 560078India Department of Chemistry Dayananda Sagar College of EngineeringBangalore 560078India Department of Physics GFGCVijayanagarBengaluru 560040India

In the urban atmosphere of Bengaluru, various volatile organic compounds(vOCs), particularly Benzene,Toluene, Ethylbenzene, and Xylene(BTEX), have shown an increasing trend in concentration. The present research was conducted during summer and monsoon seasons, focusing on Kadubeesanahalli, a high-traffic area within the Bengaluru Metropolitan City. Hourly sample data was collected using a BTEX analyzer(Model GC955-600) and subsequently transformed into daily, monthly, and seasonal values. The study revealed distinct patterns in benzene concentrations. Benzene levels were lowest during the early morning hours, specifically from 1:00 *** 7:00 a.m.. Concentrations then increased from 7:00 a.m. to 9:00 a.m. and again from 4:00 p.m. to 11:00 p.m.,corresponding to the morning and evening peak traffic hours. However, between 10:00 a.m. and 4:00 p.m., the concentration decreased due to reduced traffic levels. These diurnal variations in benzene concentration are influenced by meteorological parameters. Comparing the two seasons, higher concentrations of Benzene, EthylBenzene, and MP-xylene were observed during the summer season. This increase is attributed to the elevated temperatures during summer, which promote the vaporization of BTEX compounds. Conversely, lower BTEX concentrations were recorded during the monsoon season due to the wet deposition process. The observed positive correlation(r > 0.5) among BTEX parameters strongly suggests a common source, most likely originating from vehicular emissions.

关键词： BTEX Summer variation Meteorological parameters Correlation

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Success of photodynamic therapy in palliating patients with nonresectable cholangiocarcinoma: A systematic review and meta-analysis

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World Journal of Gastroenterology 2017年第7期23卷 1278-1288页

作者： Harsha Moole Harsha Tathireddy Sirish Dharmapuri vishnu Moole Raghuveer Boddireddy Pratyusha Yedama sowmya Dharmapuri Achuta Uppu Naveen Bondalapati Abhiram Duvvuri Department of Medicine University of Illinois College of Medicine Department of Medicine Wilkes-Barre Veterans Affairs Medical Center Department of Medicine NTR University of Health Sciences Department of Medicine Albert Einstein College of Medicine Department of Medicine Barnes Jewish Christian Medical GroupChristian Hospital Division of Gastroenterology and Hepatology Kansas City Veteran Affairs Medical Center

To perform a systematic review and meta-analysis on clinical outcomes of photodynamic therapy (PDT) in non-resectable *** studies compared outcomes with photodynamic therapy and biliary stenting (PDT group) vs biliary stenting only (BS group) in palliation of non-resectable cholangiocarcinoma. Articles were searched in MEDLINE, PubMed, and EMBASE. Pooled proportions were calculated using fixed and random effects model. Heterogeneity among studies was assessed using the I2 *** studies (n = 402) that met inclusion criteria were included in this analysis. The P for χ2 heterogeneity for all the pooled accuracy estimates was > 0.10. Pooled odds ratio for successful biliary drainage (decrease in bilirubin level > 50% within 7days after stenting) in PDT vs BS group was 4.39 (95%CI: 2.35-8.19). Survival period in PDT and BS groups were 413.04 d (95%CI: 349.54-476.54) and 183.41 (95%CI: 136.81-230.02) respectively. The change in Karnofsky performance scores after intervention in PDT and BS groups were +6.99 (95%CI: 4.15-9.82) and -3.93 (95%CI: -8.63-0.77) respectively. Odds ratio for post-intervention cholangitis in PDT vs BS group was 0.57 (95%CI: 0.35-0.94). In PDT group, 10.51% (95%CI: 6.94-14.72) had photosensitivity reactions that were self-limiting. Subgroup analysis of prospective studies showed similar results, except the incidence of cholangitis was comparable in both *** palliation of unresectable cholangiocarcinoma, PDT seems to be significantly superior to BS alone. PDT should be used as an adjunct to biliary stenting in these patients.

关键词： Photodynamic therapy Biliary stenting Unresectable cholangiocarcinoma Outcome Systematic review Meta-analysis

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Abdominal obesity adversely affects bone mass in children

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World Journal of Clinical Pediatrics 2018年第1期7卷 43-48页

作者： sowmya Krishnan Michael P Anderson David A Fields Madhusmita Misra Department of Pediatrics University of Oklahoma Health Sciences Center Harold Hamm Diabetes Center College of Public Health University of Oklahoma Health Science Center Massachusetts General Hospital for Children and Harvard Medical School

AIM To determine the effect of childhood obesity and insulin resistance on bone health. METHODS We conducted a cross sectional study in pubertal adolescents and young adults 13-20 years old who were either overweight/obese or normal weight. Participants were Tanner 3 or above for pubertal stage, and had fasting blood work done to measure glucose, insulin, C-reactive protein and lipid levels. Homeostatic model of insulin resistance(HOMA-IR) was calculated using the formula(Fasting Blood Glucose *Insulin/405). Body composition and bone mineral density were measured using dual energy X-ray absorptiometry(DXA; Hologic QDR 4500, Waltham, MA, United Kingdom). RESULTS Percent trunk fat was associated inversely with whole body bone mineral content(BMC), whereas HOMA-IR was associated positively with whole body *** Our results suggest that abdominal adiposity may have an adverse effect on whole body bone parameters and that this effect is not mediated by insulin resistance.

关键词： Obesity Bone mineral density Insulin resistance

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