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Journal of Harbin Institute of Technology(New series) 2024年

作者： k gowri S Brindha Department of Computer Science St.Peters Institute of Higher Education And Research Department of Computer Science and Application St.Peters Institute of Higher Education And Research

Phishing threats， especially those sent via SMS (known as smishing)， are a big worry in the digital world. So better ways are needed to fight against phishing because cybercriminals keep changing their tactics. This study aims to make the online systems safer by using advanced technology called deep learning ， specifically a method called the AlexNet-LSTM algorithm， to sort out smishing messages effectively. Phishing vulnerability depends on different things such as age， gender， how much time someone spends online， and how stressed they are. In this study， deep learning is used to find SMS threats， and different types of text-based attacks are figured out by using the AlexNet-LSTM algorithm. To evaluate the superiority of this new method and how well it performs， it is compared with traditional methods such as logistic regression， random forest， and support vector machine. The results show a big improvement in accuracy， up to 99.6%， proving the efficacy of deep learning to make the online systems safer against various tricky attacks.

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Portable dielectrophoresis for biology:ADEPT facilitates cell trapping,separation,and interactions

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Microsystems & Nanoengineering 2024年第2期10卷 193-205页

作者： Lourdes Albina Nirupa Julius Dora Akgül gowri krishnan Fabian Falk Jan korvink Vlad Badilita Department Institute of Microstructure TechnologyKarlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 1Eggenstein-Leopoldshafen76344Baden-WürttembergGermany

Dielectrophoresis is a powerful and well-established technique that allows label-free,non-invasive manipulation of cells and particles by leveraging their electrical *** practical implementation of the associated electronics and user interface in a biology laboratory,however,requires an engineering background,thus hindering the broader adoption of the *** order to address these challenges and to bridge the gap between biologists and the engineering skills required for the implementation of DEP platforms,we report here a custom-built,compact,universal electronic platform termed ADEPT(adaptable dielectrophoresis embedded platform tool)for use with a simple microfluidic chip containing six *** versatility of the open-source platform is ensured by a custom-developed graphical user interface that permits simple reconfiguration of the control signals to address a wide-range of specific applications:(i)precision positioning of the single bacterium/cell/particle in the micrometer range;(ii)viability-based separation by achieving a 94%efficiency in separating live and dead yeast;(iii)phenotype-based separation by achieving a 96%efficiency in separating yeast and Bacillus subtilis;(iv)cell–cell interactions by steering a phagocytosis process where a granulocyte engulfs *** RGB-S ***,the set of experiments and the platform form a complete basis for a wide range of possible applications addressing various biological questions exploiting the plug-and-play design and the intuitive GUI of ADEPT.

关键词： Together separation separating

Effect of Center Voltage Vectors(CVVs)of Three-level Space Plane on the Performance of Dual Inverter Fed Open End Winding Induction Motor Drive

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Chinese Journal of Electrical Engineering 2019年第2期5卷 43-55页

作者： M.Harsha Vardhan Reddy k.Sri gowri T.Bramhananda Reddy G.kishor Department of EEE G.Pulla Reddy Engineering CollegeKurnoolAPIndia

Dual inverter fed open end winding induction motor(IM)drive offers many advantages over other multilevel inverter fed IM *** width modulation(PWM)techniques are employed for the control of output voltage and *** vector base PWM techniques are popular among all the PWM techniques.A simplified space vector PWM method with simple and small look-up table approach is presented for dual inverter *** the proposed space vector based PWM technique provides freedom in selecting the center voltage vector(CVV)by which different PWM techniques will be *** implementation of all these PWM techniques is generalized by using a constant *** derived PWM techniques show superior performance in reducing the zero sequence voltage(ZSV)by maintaining the same quality of output *** performance of all these PWM techniques are evaluated theoretically and verified in real time through dSPACE 1104 control board.

关键词： Center voltage vectors coupled PWM decoupled PWM space vector PWM zero sequence voltage

Classifying Big Medical Data through Bootstrap Decision Forest Using Penalizing Attributes

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Intelligent Automation & Soft Computing 2023年第6期36卷 3675-3690页

作者： V.gowri V.Vijaya Chamundeeswari Department of CSE SRM Institute of Science and TechnologyRamapuram CampusChennaiTamilnaduIndia Department of CSE Saveetha Engineering CollegeChennaiTamilnaduIndia

Decision forest is a well-renowned machine learning technique to address the detection and prediction problems related to clinical ***,the tra-ditional decision forest(DF)algorithms have lower classification accuracy and cannot handle high-dimensional feature space *** this work,we pro-pose a bootstrap decision forest using penalizing attributes(BFPA)algorithm to predict heart disease with higher *** work integrates a significance-based attribute selection(SAS)algorithm with the BFPA classifier to improve the performance of the diagnostic system in identifying cardiac *** pro-posed SAS algorithm is used to determine the correlation among attributes and to select the optimum subset of feature space for learning and testing *** selects the optimal number of learning and testing data points as well as the density of trees in the forest to realize higher prediction accuracy in classifying imbalanced datasets *** effectiveness of the developed classifier is cautiously verified on the real-world database(i.e.,Heart disease dataset from UCI repository)by relating its enactment with many advanced approaches with respect to the accuracy,sensitivity,specificity,precision,and intersection over-union(IoU).The empirical results demonstrate that the intended classification approach outdoes other approaches with superior enactment regarding the accu-racy,precision,sensitivity,specificity,and IoU of 94.7%,99.2%,90.1%,91.1%,and 90.4%,***,we carry out Wilcoxon’s rank-sum test to determine whether our proposed classifier with feature selection method enables a noteworthy enhancement related to other classifiers or *** the experimental results,we can conclude that the integration of SAS and BFPA outperforms other classifiers recently reported in the literature.

关键词： Data classification decision forest feature selection healthcare data heart disease prediction penalizing attributes

Adaptive Sub-Threshold Voltage Level Control for Voltage Deviate-Domino Circuits

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Intelligent Automation & Soft Computing 2023年第2期35卷 1767-1781页

作者： C.Arun Prasath C.gowri Shankar Department of Electronics and Communication Engineering Mahendra Engineering CollegeNamakkal637503India Department of Electrical and Electronics Engineering KSR College of EngineeringTiruchengode637215India

Leakage power and propagation delay are two signiﬁcant issues found in sub-micron technology-based Complementary Metal-Oxide-Semiconductor(CMOS)-based Very Large-Scale Integration(VLSI)circuit *** Channel Metal Oxide Semiconductor(PMOS)has been replaced by Negative Channel Metal Oxide Semiconductor(NMOS)in recent years,with low dimen-sion-switching changes in order to shape the mirror of voltage *** is used to reduce stacking leakage as well as total *** Logic Cir-cuit is a powerful and versatile digital programmer that gained popularity in recent *** this study regarding Adaptive Sub Threshold Voltage Level Control Pro-blem,the researchers intend to solve the contention issues,reduce power dissipa-tion,and increase the noise immunity by proposing Adaptive Sub Threshold Voltage Level Control(ASVLC)-based domino *** efﬁciency and effec-tiveness of the domino circuit are demonstrated through simulation *** suggested system makes use of high-speed broad fan-gate circuits,occupies mini-mum space,and consumes meagre amount of *** proposed circuit was validated in Cadence simulation tool at a supply voltage of 1V,frequency of 100 MHz,and an operating temperature of 27°C with 64 input OR *** per the simulation results,the suggested Domino Gate reduced the power dissipa-tion by 17.58 percent and improved the noise immunity by 1.21 times in compar-ison with standard domino logic circuits.

关键词： Domino logic power consumption ﬁgure of merit adaptive sub-threshold voltage level wide fan-in gates

MOSFET-like CNFET based logic gate library for low-power application:a comparative study

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Journal of Semiconductors 2014年第7期35卷 112-124页

作者： P.A.gowri Sankar k.Udhayakumar Department of Electrical Engineering Anna University

The next generation oflogic gate devices are expected to depend upon radically new technologies mainly due to the increasing difficulties and limitations of existing CMOS technology. MOSFET like CNFETs should ideally be the best devices to work with for high-performance VLS1. This paper presents results of a comprehensive comparative study of MOSFET-like carbon nanotube field effect transistors （CNFETs） technology based logic gate library for high-speed, low-power operation than conventional bulk CMOS libraries. It focuses on comparing four promising logic families namely： complementary-CMOS （C-CMOS）, transmission gate （TG）, complementary pass logic （CPL） and Domino logic （DL） styles are presented. Based on these logic styles, the proposed library of static and dynamic NAND-NOR logic gates, XOR, multiplexer and full adder functions are implemented efficiently and carefully analyzed with a test bench to measure propagation delay and power dissipation as a function of supply voltage. This analysis provides the right choice of logic style for low-power, high-speed applications. Proposed logic gates libraries are simulated using Synopsys HSPICE based on the standard 32 nm CNFET model. The simulation results demonstrate that, it is best to use C-CMOS logic style gates that are implemented in CNFET technology which are superior in performance compared to other logic styles, because of their low average powerdelay-product （PDP）. The analysis also demonstrates how the optimum supply voltage varies with logic styles in ultra-low power systems. The robustness of the proposed logic gate library is also compared with conventional and state-art of CMOS logic gate libraries.

关键词： CNFET digital integrated circuits logic gate design low-voltage low-power logic styles

Modeling lateral placement and movement of vehicles on urban undivided roads in mixed traf?c:A case study of India

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Journal of Traffic and Transportation Engineering(English Edition) 2020年第6期7卷 860-873页

作者： Punith Bkotagi Pooja Raj gowri Asaithambi Department of Civil Engineering The National Institute of Engineering MysuruMysuru 570008India Department of Civil Engineering National Institute of Technology KarnatakaMangalore 575025India Department of Civil and Environmental Engineering Indian Institute of Technology TirupatiTirupati 517506India

In India,the majority of urban roads are undivided where the behavior of flows in a particular direction is predominantly influenced by the opposing *** to lack of lane segregation,the vehicles in ongoing direction occupy the opposing lane,which increases the lateral interactions between *** lateral interactions are influenced by various parameters such as vehicle types,driver behavior and vehicular *** of such complex interactions plays an important role in evaluating various management measures using microscopic simulation *** lateral characteristics of vehicles,such as placement,separation and movement,act as necessary input for simulation *** present study aims to analyze and model the lateral characteristics of vehicles on two-lane urban undivided *** achieve this,traffic flow data were collected from an urban undivided mid-block section in Bangalore City,India,using video graphic *** linear regression model was developed for predicting the lateral placement of subject vehicle and it was found that lateral placement of subject vehicle is influenced by types and speeds of subject and opposing *** separation for different types of ongoing(subject)and opposing pairs was also *** results show that both the ongoing and opposing vehicles have less freedom to move laterally when their sizes increase and hence,lateral separation *** choice of path of vehicles’lateral shifts(left,current and right)on urban undivided roads was modeled using multinomial logistic *** shift of a vehicle is influenced by speeds of subject vehicle and leader vehicle in current path,speed of leader vehicle in target path,and lateral gap between leader vehicles in current path and target path.

关键词： Transportation Urban undivided road Mixed traffic Lateral placement Lateral separation Lateral movement

Energy transfer in co-and tri-doped Y3Al5O12 phosphors

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Journal of Rare Earths 2017年第8期35卷 775-782页

作者： k.Santhosh kumar 娄朝刚谢宇飞胡琳 A.gowri Manohari 肖东叶慧琪唐靓 Didier Pribat School of Electronic Science and Engineering Southeast University Nanjing 210096 China School of Biological Sciences and Medical Engineering Southeast University Nanjing 210096 China Nanjing Institute of Astronomical Optics & Technology Nanjing 210042 China

Single-doped（Ce3＋,Tb3＋）, co-doped（Ce3＋-Tb3＋, Ce3＋-Yb3＋, Tb3＋-Yb3＋） and tri-doped（Ce3＋-Tb3＋-Yb3＋） Y3Al5O12 phosphors were synthesized by a solid-state reaction method. The XRD, excitation and emission spectra and the fluorescence lifetime of the samples were measured. The energy transfer mechanism was also investigated. The results showed that the energy transfer efficiency from Tb3＋ to Ce3＋ was 51% and the energy transfer efficiency from Ce3＋ to Yb3＋ was 63.1%. Concomitantly, both were more efficient than that from Ce3＋ to Tb3＋（7%） and from Tb3＋ to Yb3＋（10.2%）. Also, the Yb3＋ ions received energy mainly from Ce3＋ ions in Ce3＋-Tb3＋-Yb3＋ tri-doped Y3Al5O12 phosphors. Among these materials, Ce3＋-Yb3＋ co-doped YAG phosphors are a better choice than others as a down-conversion material due to their higher energy transfer efficiency.

关键词： Ce3+-Tb3+-Yb3+ YAG phosphors energy transfer down conversion rare earths

Structural,Optical,Antibacterial and Antifungal Properties of Zirconia Nanoparticles by Biobased Protocol

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Journal of Materials Science & Technology 2014年第8期30卷 782-790页

作者： S. gowri R. Rajiv Ganhi M. Sundrarajan Advanced Green Chemistry Lab Department of Industrial ChemistrySchool of Chemical SciencesAlagappa University

Biological entities and inorganic materials have been in constant touch with each other ever since inception of life on *** method has lots of merits such as not requiring complex procedures,template supporting *** this work,Aloe vera plant mediated synthesis of tetragonal zirconia nanoparticles has been performed and thermogravimetric and differential thermal analysis（TG/DTA）,X-ray diffraction（XRD）,scanning electron microscopy（SEM） with energy dispersive X-ray spectroscopy（EDX）,atomic force microscopy（AFM）,ultraviolet—visible（UV—VIS） technique and Fourier transform infrared spectroscopy（FTIR） have been provided for characterizing the *** of homogeneously distributed spherical zirconia nanoparticles of 50—100 nm in size is *** antimicrobial and antifungal properties are also investigated for synthesis of zirconia nanoparticles and the treated cotton by agar diffusion method against Staphylococcus aureus and Escherichia coli bacterial pathogens and fungal strains Candida albicans and Aspergillus niger,respectively.

关键词： Zirconia nanoparticles Biosynthesis Aloe vera Cotton Antibacterial property

Development and validation of a high throughput UPLC–MS/MS method for simultaneous quantification of esomeprazole,rabeprazole and levosulpiride in human plasma

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Journal of Pharmaceutical Analysis 2016年第3期6卷 190-198页

作者： Raja Haranadha Babu Chunduri gowri Sankar Dannana School of Pharmaceutical Sciences and Technologies Jawaharlal Nehru Technological University Kakinada 533003 Andhra Pradesh India A.U. College of Pharmaceutical Sciences Andhra University Vishakapamam 530003 Andhra Pradesh. India

A high throughput ultra pressure liquid chromatography-mass spectrometry （UPLC-MS/MS） method with good sensitivity and selectivity has been developed and validated for simultaneous quantification of esomeprazole, rabeprazole and levosulpiride in human plasma using lansoprazole as internal standard （IS）. The extraction method based on liquid-liquid extraction technique was used to extract the analytes and IS from of 50 μL of human plasma using methyl tert-butyl ether：ethyl acetate （80：20, v/v）, which offers a high recovery. Chromatographic separation of analytes and IS was achieved on a Hypersil gold C18 column using gradient mobile phase consisting of 2 mM ammonium formate/acetonitrile. The flow rate was set at 0.5 mL/min to elute all the analytes and IS within 1.00 min runtime. Detection of target compounds was performed on a triple quadruple mass spectrometer by multiple reaction monitoring （MRM） mode via positive electrospray ionization （ESI）. Method validation results demonstrated that the developed method has good precision and accuracy over the concentration ranges of 0.1-2000 ng/mL for each analyte. Stability of compounds was established in a battery of stability studies, i.e., bench top, autosampler, dry extract and long-term storage stability as well as freeze-thaw cycles. The validated method has been successfully applied to analyze human plasma samples for application in pharmaco- kinetic studies.

关键词： Esomeprazole Rabeprazole Levosulpiride UPLC-MS/MS Pharmacokinetic studies