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Fuzzy System Design Using Current Amplifier for 20 nm CMOS Technology

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Computers, Materials & Continua 2022年第7期72卷 1815-1829页

作者： Shruti Jain Cherry Bhargava vijayakumar varadarajan Ketan Kotecha Jaypee University of Information Technology Waknaghat172234India Symbiosis Institute of Technology Symbiosis International(Deemed University)Pune411021India School of Computer Science and Engineering The University of New South WalesSydneyNSW 2052Australia Symbiosis Centre for Applied Artificial Intelligence Symbiosis International(Deemed University)Pune411021India

In the recent decade,different researchers have performed hardware implementation for different applications covering various areas of *** this research paper,a novel analog design and implementation of different steps of fuzzy systems with current differencing buffered amplifier(CDBA)are proposed with a compact structure that can be used in many signal processing *** proposed circuits are capable of wide input current range,simple structure,and are highly *** electrical parameters were compared for the proposed fuzzy system when using different membership *** novelty of this paper lies in the electronic implementation of different steps for realizing a fuzzy system using current *** the power supply voltage of CDBA is 2v,it results in 155mW,power dissipation;4.615KΩ,input resistance;366KΩ,output resistances;and 189.09 dB,common-mode rejection ratio.A 155.519 dB,voltage gain,and 0.76v/μs,the slew rate is analyzed when the power supply voltage of CDBAis *** fuzzy system is realized in 20nm CMOS technology and investigated with an output signal of high precision and high speed,illustrating that it is suitable for realtime *** this research paper,a consequence of feedback resistance on the adder circuit and the defuzzified circuit is also analyzed and the best results are obtained using 100K *** structure has a low hardware complexity leading to a low delay and a rather high quality.

关键词： Current amplifiers membership functions fuzzy system fuzzy operators defuzzified circuit feedback resistance

Optimization of piezoelectric MEMS process on Sr and La co-doped PZT thin films

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Journal of Advanced Dielectrics 2020年第4期10卷 6-12页

作者： M.Kathiresan Jain Jose E.varadarajan R.Ramesh v.Natarajan M.K.Jayaraj T.Santhanakrishnan Naval Physical and Oceanographic Laboratory DRDO Kochi-682021India Research Innovation Centre DRDO Chennai-600113India Department of Physics Cochin University of Science and Technology Kochi-682022 India Combat vehicle Research and Development Establishment DRDOChennai-600054India

Doped lead-zirconate-titanate(PZT)thin films are preferred for the development of micro-electro-mechanical systems(MEMS)-based acoustic sensors because of their inherent higher dielectric and piezoelectric *** process is used to develop such MEMS devices which is highly complex even for undoped PZT thin films;therefore,the problem is further cumbersome for doped PZT thin films due to the presence of added dopant elements and their associated *** paper presents patterning of strontium(Sr)and lanthanum(La)co-doped PZT thin film(PSLZT)deposited on platinized silicon substrate using wet and dry etching processes for fabricating a diaphragm structure with thickness of 15-25μm and diameter of 1.4-2 mm,suitable for acoustic sensing *** effects of various etching conditions have been studied and the results are *** is found that the dry etching is the most suited process for realizing the piezoelectric MEMS structure due to its higher etching *** appreciable etching rate of 260-270 nm/min with smooth vertical sidewalls is *** silicon diaphragm with patterned PSLZT thin film is found to retain more than 80%of its dielectric and piezoelectric coefficients and has a resonance of 1.43 MHz.

关键词： PZT etching RF sputtering Doped PZT Sr and La co-doping MEMS acoustic sensor

一个数学家的学徒生涯．Andre Weil的自传

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数学译林 2011年第1期30卷 82-92页

作者： v. S. varadarajan 胥鸣伟(译) 李振宇(译) 袁向东(校)

我的生活，至少是在这个词的真正含义下的，应从我的出生日1906年5月6日算起到1986年5月24日我的妻子和伴侣埃弗利纳（Eveline）的逝世为止——这是一种异乎寻常的快乐生活，且充满了起伏变迁…20世纪最伟大数学家和数学名人之一的安德... 详细信息

我的生活，至少是在这个词的真正含义下的，应从我的出生日1906年5月6日算起到1986年5月24日我的妻子和伴侣埃弗利纳（Eveline）的逝世为止——这是一种异乎寻常的快乐生活，且充满了起伏变迁…20世纪最伟大数学家和数学名人之一的安德烈·韦伊（Andre Weil）就以这段感人的话开始了从他的童年到1947年秋季这一时期的自传叙述，

关键词：数学家 Weil 生活

Hydrogeological and Hydrochemical Characterization of Coastal Aquifers with Special Reference to Submarine Groundwater Discharge in Uttara Kannada, Karnataka, India

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Journal of Marine Science 2021年第3期3卷 36-46页

作者： B.K Purandara Sudhir Kumar N varadarajan Sumit Kant J v Tyagi National Institute of Hydrology HRRCVV nagarBelagaviKarnatakaIndia National Institute of Hydrology Jal Vigyan BhavanRoorkeeUttarakhandIndia

In coastal areas of our country,in spite of having excess rainfall(more than 3000 mm),groundwater become a rare commodity during *** of researchers have discussed the issues related to water scarcity of coastal areas where there is a huge pressure on environment due to increased population,tourism,agriculture and industrial *** depletion of groundwater is also reported in coastal districts due to continuous discharge of direct runoff and also through subterranean flow which is termed as Submarine Groundwater Discharges(SGD).Large quantity of contaminants enter the ocean system through *** necessitated a detailed investigation to understand the hydrological processes involved and the source of *** present investigation is an attempt to make quantitative and qualitative assessment of SGD based on hydrological,hydrogeological and hydrochemical ***,water balance components were evaluated based on hydrological and hydrogeological *** parameters were also evaluated to understand the impact of seawater intrusion in pre and post-monsoon of *** revealed that,there are signatures of considerable quantity of submarine groundwater discharge in parts of Honnavara,Kumta,Ankola and Karwar *** influence of seawater in coastal aquifers is quite rare all along the coast of Uttara kannada district which is attributed to high groundwater recharge(15-20%)occurring in catchment areas.

关键词： Groundwater recharge Submarine groundwater recharge Aquifers Hydraulic properties Hydrochemistry