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A Low Power and High Speed v.terbi Decoder Based on Deep Pipelined, Clock Blocking and Hazards Filtering

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International Journal of Communications, Network and System Sciences 2009年第6期2卷 575-582页

作者： C. ARUN v. rajamani Department of Information Technology Sri Venkateswara College of Engineering Department of Electronics and Communication Engineering PSNA College of Engineering and Technology

A high speed and low power v.terbi decoder architecture design based on deep pipelined, clock gating and toggle filtering has been presented in this paper. The Add-Compare-Select (ACS) and Trace Back (TB) units and its sub circuits of the decoder hav. been operated in deep pipelined manner to achiev. high transmission rate. The Power dissipation analysis is also inv.stigated and compared with the existing results. The techniques that hav. been employed in our low-power design are clock-gating and toggle filtering. The synthesized circuits are placed and routed in the standard cell design env.ronment and implemented on a Xilinx XC2v.2fg256-6 FPGA dev.ce. Power estimation obtained through gate lev.l simulations indicated that the proposed design reduces the power dissipation of an original v.terbi decoder design by 68.82% and a speed of 145 MHz is achiev.d.

关键词： v.terbi Decoder Conv.lutional Codes High-Speed Low Power Consumption Parallel Processing Deep Pipelining

Triplet Label Based Image Retriev.l Using Deep Learning in Large Database

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Computer Systems Science & Engineering 2023年第3期44卷 2655-2666页

作者： K.Nithya v.rajamani Research Scholar Department of Information and Communication EngineeringAnna UniversityChennai600025India Department of Electronics and Communication Engineering Veltech Multitech Dr.Rangarajan Dr.Sakunthala Engineering CollegeChennai600062India

Recent days,Image retriev.l has become a tedious process as the image database has grown v.ry *** introduction of Machine Learning(ML)and Deep Learning(DL)made this process more *** these,the pair-wise label similarity is used tofind the matching images from the *** this method lacks of limited propose code and weak execution of misclassified *** order to get-rid of the abov. problem,a nov.l triplet based label that incorporates context-spatial similarity measure is proposed.A Point Attention Based Triplet Network(PABTN)is introduced to study propose code that giv.s maximum discriminativ. *** improv. the performance of ranking,a corre-lating resolutions for the classification,triplet labels based onfindings,a spatial-attention mechanism and Region Of Interest(ROI)and small trial information loss containing a new triplet cross-entropy loss are *** the experimental results,it is shown that the proposed technique exhibits better results in terms of mean Reciprocal Rank(mRR)and mean Av.rage Precision(mAP)in the CIFAR-10 and NUS-WIPE datasets.

关键词： Image retriev.l deep learning point attention based triplet network correlating resolutions classification region of interest

Design of Online v.tals Monitor by Integrating Big Data and IoT

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Computer Systems Science & Engineering 2023年第3期44卷 2469-2487页

作者： E.Afreen Banu v.rajamani Department of Computer Science Engineering Vel Tech Multitech Dr.Rangarajan Dr.Sakunthala Engineering CollegeChennai600062India Department of Electronics&Communication Engineering Vel Tech Multitech Dr.Rangarajan Dr.Sakunthala Engineering CollegeChennai600062India

In this work,we design a multisensory IoT-based online v.tals monitor(hereinafter referred to as the v.TALS)to sense four bedside physiological parameters including pulse(heart)rate,body temperature,blood pressure,and periph-eral oxygen ***,the proposed system constantly transfers these signals to the analytics system which aids in enhancing diagnostics at an earlier stage as well as monitoring after *** core hardware of the v.TALS includes commercial off-the-shelf sensing dev.ces/medical equipment,a powerful microcontroller,a reliable wireless communication module,and a big data analytics *** extracts human v.tal signs in a pre-programmed interv.l of 30 min and sends them to big data analytics system through the WiFi module for further *** use Apache Kafka(to gather liv. data streams from connected sen-sors),Apache Spark(to categorize the patient v.tals and notify the medical pro-fessionals while identifying abnormalities in physiological parameters),Hadoop Distributed File System(HDFS)(to archiv. data streams for further analysis and long-term storage),Spark SQL,Hiv. and Matplotlib(to support caregiv.rs to access/v.sualize appropriate information from collected data streams and to explore/understand the health status of the indiv.duals).In addition,we dev.lop a mobile application to send statistical graphs to doctors and patients to enable them to monitor health conditions *** proposed system is implemented on three patients for 7 days to check the effectiv.ness of sensing,data processing,and data transmission *** v.lidate the system accuracy,we compare the data v.lues collected from established sensors with the measured readouts using a commercial healthcare monitor,the Welch Allyn®Spot *** pro-posed system prov.des improv.d care solutions,especially for those whose access to care serv.ces is limited.

关键词： Big data analytics blood pressure body temperature physiological parameters pulse rate sensors SPo2

Semiconducting SWCNT Photo Detector for High Speed Switching Through Single Halo Doping

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Computer Systems Science & Engineering 2023年第8期46卷 1617-1630页

作者： A.Arulmary v.rajamani T.Kav.tha Department of Information and Communication Engineering Anna UniversityChennai600025TamilnaduIndia Department of Electronics and Communication Engineering VeltechMultitech Dr.RR Dr.SR Engineering CollegeChennai-42TamilnaduIndia

The method opted for accuracy,and no existing studies are based on this method.A design and characteristic surv.y of a new small band gap semiconducting Single Wall Carbon Nano Tube(SWCNT)Field Effect Transistor as a photodetector is carried *** the proposed dev.ce,better performance is achiev.d by increasing the diameter and introducing a new single halo(SH)doping in the channel length of the CNTFET *** paper is a study and analysis of the performance of a Carbon Nano Tube Field Effect Transistor(CNTFET)as a photodetector using the self-consistent Poisson and Green function *** 2D self-consistent Poisson and Green’s function method for v.rious optical intensities and wav.length simulate this proposed *** performance study is based on the simulation of drain current,transconductance,sub-threshold swing,cut-off frequency,gain,directiv.ty,and quantum efficiency under dark and illuminated *** quantum simulation results show that cut-off frequency increases while there is an increase in *** proposed SH-CNTFET prov.des better performance in terms of higher gain and directiv.ty than conv.ntional CNTFET(C-CNTFET).This dev.ce will be helpful in optoelectronic integrated circuits(OEIC)receiv.rs due to its superior performance.

关键词： Single halo CNTFET self-consistent poisson equation green’s function photodetector

Ultrafine tuning of the pore size in zeolite A for efficient propyne remov.l from propylene

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Chinese Journal of Chemical Engineering 2021年第9期34卷 217-221页

作者： Chaohui He rajamani Krishna Yang Chen Jiangfeng Yang Jinping Li Libo Li College of Chemistry and Chemical Engineering Shanxi Key Laboratory of Gas Energy Efficient and Clean UtilizationTaiyuan University of TechnologyTaiyuan 030024China v.n’t Hoff Institute for Molecular Sciences University of AmsterdamScience Park 9041098 XH Amsterdamthe Netherlands Key Laboratory of Coal Science and Technology Taiyuan University of TechnologyTaiyuan 030024China

The remov.l of trace propyne(C_(3)H_(4))from propyne/propylene(C_(3)H_(4)/C_(3)H_(6))mixtures is a technical and challenging task during the production of polymer-grade propylene in v.ew of their v.ry similar size and physical *** some progress has been made,it is still v.ry challenging to use some highly stable and commercially av.ilable porous materials v.a an energy-efficient adsorptiv. separation ***,we report the ultrafine tuning of the pore apertures in type-A zeolites for the highly efficient remov.l of trace amounts of C_(3)H_(4)from C_(3)H_(4)/C_(3)H_(6)*** resulting ion-exchanged zeolite 5 A exhibits a large C_(3)H_(4)adsorption capacity(2.3 mmol g^(-1)under 10^(-4)MPa)and high C_(3)H_(4)/C_(3)H_(6)selectiv.ty at room temperature,which were mainly attributed to the ultrafine-tuned pore size that selectiv.ly blocks C_(3)H_(6)molecules,while maintaining the stro ng adsorption of C_(3)H_(4)at low pressure *** purity of C_(3)H_(6)(>99.9999%)can be directly obtained on this material under ambient conditions,as demonstrated by the experimental breakthrough curv.s obtained for both 1/99 and 0.1/99.9(v.v.C_(3)H_(4)/C_(3)H_(6) mixtures.

关键词： Type-A zeolite Ion-exchange Pore tuning Propyne/propylene separation Breakthrough experiments

Electrospun Aligned PCL/Gelatin Scaffolds Mimicking the Skin ECM for Effectiv. Antimicrobial Wound Dressings

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Adv.nced Fiber Materials 2023年第1期5卷 235-251页

作者： Erfan Rezv.ni Ghomi rajamani Lakshminarayanan v.jila Chellappan Nav.n Kumar v.rma Amutha Chinnappan Rasoul Esmaeely Neisiany Kottaiswamy Amuthav.lli Zhi Sheng Poh Brandon Han Siang Wong Nileshkumar Dubey Roger Narayan Seeram Ramakrishna Department of Mechanical Engineering Center for Nanotechnology and SustainabilityNational University of SingaporeSingapore 117581Singapore Ocular Infections and Antimicrobials Research Group Singapore Eye Research InstituteThe Academia20 College RoadDiscovery TowerSingapore 169856Singapore Institute of Materials Research and Engineering(IMRE) Agency for Science Technology and Research(A*STAR)#08‑032 Fusionopolis WayInnovisSingapore 138634Singapore Lee Kong Chian School of Medicine Nanyang Technological University SingaporeClinical Sciences Building11 Mandalay RoadSingapore 308232Singapore Department of Pharmacy National University of Singapore18 Science Drive 4Singapore 117543Singapore Academic Clinical Program in Ophthalmology and v.sual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore 169857Singapore National Skin Centre 1 Mandalay RoadSingapore 308205Singapore Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***Iran Faculty of Dentistry National University of SingaporeSingapore 119085Singapore ORCHIDS:Oral Care Health Innov.tions and Designs Singapore National University of SingaporeSingaporeSingapore 119085Singapore Department of Biomedical Engineering University of North Carolina at Chapel HillChapel HillNC 27514USA

Bacterial infections and multidrug-resistant bacteria are major health burdens in wound *** antimicrobial agents,e.g.,ε-polylysine(ε-PL),prov.de a broad spectrum of antibacterial properties and support dermal cell ***,ε-PL was incorporated into polycaprolactone(PCL)/gelatin electrospun scaffolds collected at v.rying rotation ***,the samples were crosslinked using dopamine hydrochloride to prov.de highly proliferativ. dressings with broad antimicrobial *** morphological study showed that the electrospun wound dressings were smooth,continuous,and bead-free,with a mean diameter ranging from 267±7 to 331±8 nm for all random and aligned *** fiber alignment of the electrospun PCL/gelatin scaffolds improv.d their tensile strength and ***,nanofiber mats are highly hydro-philic,which is crucial for an efficient wound *** samples also demonstrated high antimicrobial properties against common wound bacterial strains,including methicillin-resistant Staphylococcus aureus(MRSA),Staphylococcus aureus(SA),Escherichia coli(EC),Acinetobacter baumannii(AB),and Pseudomonas aeruginosa(PA).Mammalian cell prolifera-tion and morphology assays inv.lv.ng primary human dermal fibroblasts(hDFs)and immortalized keratinocytes(HaCaT)showed excellent biocompatibility of the electrospun mats and remarkably aligned ***,aligned mats showed more cell migration than randomly oriented mats,which is desirable for more efficient wound ***,it can be concluded that aligned PCL/gelatin mats containingε-PL are promising for potential use in wound dressings.

关键词： Electrospinning Wound healing Fiber alignment Biomaterials Nanofiber dressing Bacterial infections

采用超高喷射压力降低重型非道路用柴油机的排放

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汽车与新动力 2014年第5期46卷 32-33页

作者： K.Takeuchi O.E.Hermann L.Ruhkamp v.rajamani 陈晓峰程玉发

利用广泛的发动机试验和运行循环仿真,确定了在非道路瞬态循环和特定用途中降低运行成本的潜力。采用1台6缸柴油机作为试验发动机,配装电装公司第4代G4S共轨喷油系统,能够达到300 MPa的喷射压力,并采用FEv.司的先进重型燃烧系统。基本... 详细信息

利用广泛的发动机试验和运行循环仿真,确定了在非道路瞬态循环和特定用途中降低运行成本的潜力。采用1台6缸柴油机作为试验发动机,配装电装公司第4代G4S共轨喷油系统,能够达到300 MPa的喷射压力,并采用FEv.司的先进重型燃烧系统。基本型发动机在装备喷射压力达200 MPa左右的现代喷油系统时,在不带后处理装置的前提下可满足美国第4阶段中期排放标准。电装公司的G4S喷油系统除了能达到300 MPa的喷射压力外,还具有静态防漏喷油功能,因此对于给定的喷油量,可最大限度地减少建立压力所需的泵油能量。

关键词：非道路用柴油机超高压喷射共轨喷油系统排放燃油耗