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Design of area and power efficient Radix-4 DIT FFT butterfly unit using floating point fused arithmetic

Journal of Central South University 2016年第7期23卷 1669-1681页

作者： prabhu e Mangalam H Karthick S Department of electronics and Communication engineering Amrita School of EngineeringCoimbatore Amrita Vishwa Vidyapeetham Amrita University Department of electronics and Communication engineering Sri Krishna College of Engineering and Technology Department of electronics and Communication engineering Bannari Amman Institute of Technology

In this work, power efficient butterfly unit based FFT architecture is presented. The butterfly unit is designed using floating-point fused arithmetic units. The fused arithmetic units include two-term dot product unit and add-subtract unit. In these arithmetic units, operations are performed over complex data values. A modified fused floating-point two-term dot product and an enhanced model for the Radix-4 FFT butterfly unit are proposed. The modified fused two-term dot product is designed using Radix-16 booth multiplier. Radix-16 booth multiplier will reduce the switching activities compared to Radix-8 booth multiplier in existing system and also will reduce the area required. The proposed architecture is implemented efficiently for Radix-4 decimation in time(DIT) FFT butterfly with the two floating-point fused arithmetic units. The proposed enhanced architecture is synthesized, implemented, placed and routed on a FPGA device using Xilinx ISe tool. It is observed that the Radix-4 DIT fused floating-point FFT butterfly requires 50.17% less space and 12.16% reduced power compared to the existing methods and the proposed enhanced model requires 49.82% less space on the FPGA device compared to the proposed design. Also, reduced power consumption is addressed by utilizing the reusability technique, which results in 11.42% of power reduction of the enhanced model compared to the proposed design.

关键词： floating-point arithmetic floating-point fused dot product Radix-16 booth multiplier Radix-4 FFT butterfly fast fouriertransform decimation in time

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COVID-19 Severity Prediction Using enhanced Whale with Salp Swarm Feature Classification

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Computers, Materials & Continua 2022年第7期72卷 1685-1698页

作者： Nebojsa Budimirovic e.prabhu Milos Antonijevic Miodrag Zivkovic Nebojsa Bacanin Ivana Strumberger K.Venkatachalam Singidunum University Belgrade11000Serbia Department of electronics and Communication engineering Amrita School of EngineeringAmrita Vishwa VidyapeethamCoimbatore641112India Department of Applied Cybernetics Faculty of ScienceUniversity of Hradec KrálovéHradec Králové50003Czech Republic

Computerized tomography(CT)scans and X-rays play an important role in the diagnosis of COVID-19 and *** the basis of the image analysis results of chest CT and X-rays,the severity of lung infection is monitored using a *** researchers have done in diagnosis of lung infection in an accurate and efficient takes lot of time and *** overcome these issues,our proposed study implements four cascaded ***,for pre-processing,a mean filter is ***,texture feature extraction uses principal component analysis(PCA).Third,a modified whale optimization algorithm is used(MWOA)for a feature selection *** severity of lung infection is detected on the basis of age ***,image classification is done by using the proposed MWOAwith the salp swarm algorithm(MWOA-SSA).MWOA-SSA has an accuracy of 97%,whereas PCA and MWOA have accuracies of 81%and 86%.The sensitivity rate of the MWOA-SSA algorithm is better that of than PCA(84.4%)and MWOA(95.2%).MWOA-SSA outperforms other algorithms with a specificity of 97.8%.This proposed method improves the effective classification of lung affected images from large datasets.

关键词： PCA WOA CT-image lung infection COVID-19

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Improved Key Agreement Based Kerberos Protocol for M-Health Security

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Computer Systems Science & engineering 2022年第8期42卷 577-587页

作者： P.Thirumoorthy K.S.Bhuvaneshwari C.Kamalanathan P.Sunita e.prabhu S.Maheswaran Department of Computer Science and engineeirng Nandha Engineering CollegeErode638052India Department of Computer Sceince and engineering Karpagam College of EngineeringCoimbatore641032India Department of electrical Electronics and Communication EngineeringGITAM UniversityBengaluru Campus561203India Department of electronics and Communication engineering Amrita School of EngineeringCoimbatoreAmrita Vishwa Vidyapeetham641112India Department of electronics and Communication engineering Kongu Engineering CollegePerundurai638060India

The development of wireless sensor network with Internet of Things(IoT)predicts various applications in the field of healthcare and cloud *** can give promising results on mobile health care(M-health)and Telecare medicine information systems.M-health system on cloud Internet of Things(IoT)through wireless sensor network(WSN)becomes the rising research for the need of modern *** devices attached to the patients’body which is connected to the mobile device can ease the medical *** is the key connect for optimal performance of the m-health system that share the data of patients in wireless networks in order to maintain the anonymity of the *** paper proposed a secure transmission of M-health data in wireless networks using proposed key agreement based Kerberos *** patients processed data are stored in cloud server and accessed by doctors and *** data transfer between the patients,server and the doctors are accessed with proposed protocol in order to maintain the confidentiality and integrity of *** efficiency of the proposed algorithm is compared with the existing *** computing 100 devices it consumes only 91milllisecond for computation.

关键词： Health monitoring authentication preparation protocol kerberos key agreement

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制造工艺对铝气缸盖高周疲劳耐久性的影响

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汽车与新动力 2013年第4期45卷 40-43页

作者： Chen X F engler-Pinto C King M Li M prabhu e Su X 张然治

由于铸造工艺的缘故,导致气缸盖的材料高周疲劳特性分布不均匀。为了模拟制造工艺对铸件机械性能的影响,Ford汽车公司开发了虚拟铝铸造工具。虚拟铝铸造的特点之一是能预测高周疲劳强度分布。由于残余应力对气缸盖的高周疲劳也起着重要... 详细信息

由于铸造工艺的缘故,导致气缸盖的材料高周疲劳特性分布不均匀。为了模拟制造工艺对铸件机械性能的影响,Ford汽车公司开发了虚拟铝铸造工具。虚拟铝铸造的特点之一是能预测高周疲劳强度分布。由于残余应力对气缸盖的高周疲劳也起着重要作用,因此对残余应力也进行了模拟,并将其用于气缸盖的高周疲劳分析。采用ABAQUSTM软件对气缸盖总成、热应力和工作应力进行模拟。将工作应力与残余应力结合在一起,进行高周疲劳计算。采用FeMFATTM疲劳测试有限元分析软件进行高周疲劳分析。基于虚拟铝铸造模拟获得的局部材料特性,建立了用户定义的赫氏图。结果证明,利用在FeMFATTM软件中得到的局部特性分布,可显著提高气缸盖高周疲劳模拟结果的精确度。

关键词：高周疲劳耐久性铝气缸盖制造工艺虚拟铸造

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Retreived bacteria from Noctiluca miliaris (green) bloom of the northeastern Arabian Sea

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Chinese Journal of Oceanology and Limnology 2013年第1期31卷 10-20页

作者： BASU Subhajit MATONDKAR SG prabhu FURTADO Irene Department of Microbiology Goa University National Institute of Oceanography (CSIR-India)

In recent years, seasonal blooms of the dinoflagellate Noctiluca miliaris have appeared in the open-waters of the northern Arabian Sea （NAS）. This study provides the first characterization of bacteria from a seasonal bloom of green Noctiluca ofNAS （20°N-17°N and 64°e-70°e）, during the spring-inter-monsoon cruise ofSagar Sampada 253, in March 2007. Bacterial growth as assessed by most-probable number （MPN） and plate counts, revealed ＇variable-physiotypes＇ over a wide range of salinities （0%-25% w/v NaC1）, pH levels （5-8.5）, and organic nutrient strengths, in comparison to non-bloom waters. MPN indices of bacteria in surface waters of bloom stations ＊DWK and ＊PRB, corresponded to （3.08-4.41）×103 cells/mL at 3.5% NaC1 （w/v）, and （2.82-9.49）× 102 cells/mL at 25% （w/v） NaC1 in tryptone-yeast extract broth （TYe）. Plate counts were （1.12-4） × 106 CFU/mL at 0% （w/v） NaC1, （1.28-3.9） × 106 CFU/mL at 3.5% （w/v） NaC1, and （0.4- 7）×104 CFU/mL at 25% NaC1 （w/v） on TYe. One-tenth-strength Zobell＇s gave （0.6-3.74）× 105 CFU/mL at pH 5 to （3.58-7.5）× 105 CFU/mL at pH 8.5. These bacteria were identified to the genera Bacillus, Cellulomonas, Staphylococcus, Planococcus, Dietzia, Diergibacillus, Micrococcus, Sporosarcinae, Leucobacter, and Halomonas. The identity of three strains （GUFBSS253N2, GUFBSS253N30, and GUFBSS253N84） was confirmed through 16S rDNA sequence homology as Bacillus cohnii, Bacillusflexus, and Bacillus cereus. The -2-3-fold higher plate counts of culturable bacteria from the open-waters of the NAS indicate that these bacteria could critically determine the biogeochemical dynamics of the bloom and its milieu. The role of these bacteria in sustaining/terminating the bloom is under evaluation.

关键词： northeastern Arabian Sea (NAS) green Noctiluca bloom retrievable bacteria

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Development and validation of Hyperacusis Handicap Questionnaire in individuals with tinnitus associated with hyperacusis

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Journal of Otology 2020年第4期15卷 124-128页

作者： Prashanth prabhu Megha Kondli Nagaraj All India Institute of Speech and Hearing ManasagangothriMysuru570006India

Introduction:Hypersensitivity to sound and tinnitus are often co-morbid and can influence emotional well-being,hearing,sleep,concentration,cause anxiety,and interfere with speech perception in ***:A clear measure of sensitivity to sound is important as there is dearth in standard protocol for evaluating hyperacusis in individuals with *** there are a few questionnaires to assess hyperacusis,a direct application of these questionnaires in the Indian context would be ***:The study attempts to develop and validate an indigenous Hyperacusis Handicap Questionnaire(HHQ)for individuals with tinnitus associated with ***:A total of 25 questions were considered for ***,21 questions were subdivided into three sections of seven questions each,tapping,‘Functional,’‘Social,’and‘emotional’aspects of the *** was administered on 77 individuals with tinnitus associated with hyperacusis in the age range of 20e55 years for further validation.A total score was obtained by adding all the three ***:The internal consistency of the questionnaire was determined by Cronbach’s Alpha(a)was a?0.85;and,a?0.83 for Functional,a?0.81 for Social,a?0.7 for emotional subscales suggesting that the questionnaire can be used for the assessment of handicap associated with hyperacusis in individuals with ***,no significant difference in terms of gender and duration of tinnitus comparisons were ***:The obtained results suggest that HHQ will aid in the characterization and quantification of the handicap associated with hyperacusis in individuals with tinnitus.

关键词： Quality of life Annoyance Reduced tolerance Hypersensitivity

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Spectrum of complications associated with Plasmodium vivax infection in a tertiary hospital in South-Western India

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Asian Pacific Journal of Tropical Medicine 2012年第1期5卷 79-82页

作者： Kushal Naha Sowjanya Dasari Mukhyaprana prabhu Department of Medicine Kasturba HospitalManipal-576 104KarnatakaIndia

Objective:To determine the range and incidence of complications associated with Plasmodium vivax[***) ***:A retrospective analysis was performed of all patients of *** malaria admitted in kasturba Medical *** between January and December,*** with mixed malarial infection were excluded by appropriate tests. Clinical presentation and laboratory parameters were ***:Medical records of 213 individuals who satisfied the inclusion criteria were *** was seen in 65 (30.5%),leucopenia in 38(17.8%]and thrombocytopenia in 184(86.4%l *** and alanine aminotransferases were elevated in 86(40.4%).and 89(41.9%) patients respectively. Hypoalbuminemia was observed in 157(73.6%) *** serum creatinine was noted in in 59(27.5%) *** kinase was elevated in 30 nut of 59 patients(50.8%).Overall.107 (50.2%) patients fulfilled WHO criteria for sever=e *** of the patients succumbed to the ***:*** malaria is a potentially severe disease,and the term ’ benign" tertian malaria is a *** significant morbidity,with timely and appropriate treatment *** malaria has an excellent outcome.

关键词： Plasmodium vivax malaria Complications Benign tertian malaria

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Profiles and predictors of onset based differences in vocal characteristics of adults with auditory neuropathy spectrum disorder(ANSD)

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Journal of Otology 2022年第4期17卷 218-225页

作者： Prateek Lokwani Prashanth prabhu Kavassery Venkateswaran Nisha Department of Audiology All India Institute of Speech and HearingManasagangothriMysuru570006India

Purpose:Onset-based differences are understudied in Auditory Neuropathy Spectrum Disorder(ANSD)in dimensions such as voice,which is addressed in the *** study aimed to profile and predict the best metrics of onset-related differences in acoustic vocal characteristics of early and late-onset ANSD ***:31 participants(15 early and 16 late-onset)aged 15e30 years diagnosed with ANSD were included in the *** sustained phonation of vowel/i/recorded by the participants using android based smartphones of selected configuration was sent over email to the *** parameters(fundamental frequency,harmonic frequencies,jitter,shimmer,harmonic-to-noise ratio,cepstral peak prominence-CPP,and pitch sigma)were analysed using Praat ***:Results revealed significantly increased(pental frequency along with decreased F2 and F3 of/i/in the early-onset ANSD compared to the late-onset group,which can be explained based on differences in the pathophysiology of the *** not statistically significant,mean perturbations(jitter and shimmer),harmonic-to-noise ratio,cepstral peak prominence,and pitch sigma were more affected in the early-onset group,reflective of lowered auditory feedback and periodicity in their voice *** of discriminant analysis marked the emergence of F2,F3,and CPP as the most sensitive metrics for onset-based group differences in voice ***:The findings from the study highlight the role of acoustical voice evaluation(especially CPP,F2&F3)in verifying the onset of ANSD *** insights from the onset-based differences seen in vocal characteristics can indirectly help audiologists in deciding the management options for ANSD.

关键词： Auditory neuropathy spectrum disorder Voice Acoustic analysis Phonation Audiologists

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Deleterious effects of whole-body vibration on the spine:A review of in vivo,ex vivo,and in vitro models

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Animal Models and experimental Medicine 2021年第2期4卷 77-86页

作者： Folly Patterson Raheleh Miralami Keith e.Tansey Raj K.prabhu Lauren B.Priddy Department of Agricultural and Biological engineering Mississippi State UniversityMississippi StateMSUSA Center for Advanced Vehicular Systems Mississippi State UniversityStarkvilleMSUSA Department of Neurosurgery and Neurobiology University of Mississippi Medical CenterJacksonMSUSA Center for Neuroscience and Neurological Recovery Methodist Rehabilitation CenterJacksonMSUSA Spinal Cord Injury Medicine and Research Services G.V.(Sonny)Montgomery VA Medical CenterJacksonMSUSA

Occupational exposure to whole-body vibration is associated with the develop-ment of musculoskeletal,neurological,and other *** back pain and other spine disorders are prevalent among those exposed to whole-body vibration in occupational and military *** standards for limiting exposure to whole-body vibration have been in place for decades,there is a lack of understanding of whole-body vibration-associated risks among safety and healthcare ***,disorders associated with whole-body vibration exposure remain prevalent in the workforce and *** relationship between whole-body vibra-tion and low back pain in humans has been established largely through cohort stud-ies,for which vibration inputs that lead to symptoms are rarely,if ever,*** gap in knowledge highlights the need for the development of relevant in vivo,ex vivo,and in vitro models to study such *** parameters of vibrational stimuli(eg,frequency and direction)play critical roles in such pathologies,but the specific cause-and-effect relationships between whole-body vibration and spinal pa-thologies remain mostly *** paper provides a summary of whole-body vibration parameters;reviews in vivo,ex vivo,and in vitro models for spinal patholo-gies resulting from whole-body vibration;and offers suggestions to address the gaps in translating injury biomechanics data to inform clinical practice.

关键词： adverse effects animal models intervertebral disc spine translational research vibration

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In silico prediction of monovalent and chimeric tetravalent vaccines for prevention and treatment of dengue fever

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The Journal of Biomedical Research 2018年第3期32卷 222-236页

作者： Vijayakumar Subramaniyan Ramesh Venkatachalam prabhu Srinivasan Manogar Palani Computational Phytochemistry Laboratory P.G. and Research Department of Botany and Microbiology A.V.V.M. Sri Pushpam College (Autonomous)

Reverse vaccinology method was used to predict the monovalent peptide vaccine candidate to produce antibodies for therapeutic purpose and to predict tetravalent vaccine candidate to act as a common vaccine to cover all the dengue virus serotypes. envelope（e）-proteins of DeNV-1-4 serotypes were used for vaccine prediction using NCBI,Uniprot/Swissprot, Swiss-prot viewer, VaxiJen V2.0, TMHMM, BCPReDS, Propred-1, Propred and MHC Pred. eproteins of DeNV-1-4 serotypes were identified as antigen from which T cell epitopes, through B cell epitopes, were predicted to act as peptide vaccine candidates. each selected T cell epitope of e-protein was confirmed to act as vaccine and to induce complementary antibody against particular serotype of dengue virus. Chimeric tetravalent vaccine was formed by the conjugation of four vaccines, each from four dengue serotypes to act as a common vaccine candidate for all the four dengue serotypes. It can be justifiably concluded that the monovalent 9-mer T cell epitope for each DeNV serotype can be used to produce specific antibody against dengue virus and a chimeric common tetravalent vaccine candidate to yield a comparative vaccine to cover any of the four dengue virus serotype. This vaccine is expected to be highly immunogenic against dengue fever.

关键词： dengue serotypes dengue virus vaccine e-proteins MHC Ⅰ and Ⅱ

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