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Lepton and quark mixing patterns with generalized CP transformations

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Chinese Physics C 2022年第10期46卷 25-42页

作者： Joy Ganguly raghavendra Srikanth Hundi Department of Physics Indian Institute of Technology HyderabadKandi-502284India

In this study,we modify a scenario,originally proposed by Grimus and Lavoura,in order to obtain maximal values for the atmospheric mixing angle and CP,violating the Dirac phase of the lepton *** achieve this,we employ CP and some discrete symmetries in a type Ⅱ seesaw *** make predictions about the neutrino mass ordering and smallness of the reactor angle,we establish some conditions on the elements of the neutrino mass matrix of our ***,we study the quark masses and mixing pattern within the framework of our model.

关键词： neutrino physics nuetrino mass and mixing model quark mass and mixing analysis of scalar potential

Analysis of Evaluation Data Collected on Likert Type Items: Humanities-Courses

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Journal of Data Analysis and Information Processing 2021年第2期9卷 102-121页

作者： raghavendra Dwivedi Nagendra Nath Pandey Shri Jagdish Prasad Jhabarmal Tibrewala University Vidyanagari Jhunjhunu Rajasthan Malad (West) Mumbai

To improve high quality and/or retain achieved high quality of an academic program, time to time evaluation for quality of each covered course is often an integrated aspect considered in reputed institutions, however, there has been little effort regarding humanities courses. This research article deals with analysis of evaluation data collected regarding humanities course from a College of Commerce & Economics, Mumbai, Maharashtra, India, on Likert type items. Appropriateness of one parametric measure and three non-parametric measures are discussed and used in this regard which could provide useful clues for educational policy planners. Keeping in view of the analytical results using these four measures, regardless of the threshold regarding satisfaction among students, overall performance of almost every subject has been un-satisfactory. There is a need to make a focused approach to take every course at the level of high performance. The inconsistency noticed under every threshold further revealed that under such poorly performing subjects globally, one needs to analyze merely at the global level item. Once the global level analysis reveals high performance of a course, then only item specific analysis may need to be focused to find out the items requiring further improvements.

关键词： Evaluation Data Humanities Courses Likert Type Items Parametric Measure Non-Parametric Measures

Scale for Evaluation of Humanities Courses: Development, reliability and Validity

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Journal of Data Analysis and Information Processing 2020年第4期8卷 358-377页

作者： raghavendra Dwivedi Nagendra Nath Pandey Shri Jagdish Prasad Jhabarmal Tibrewala University Vidyanagari Jhunjhunu India Malad (West) Mumbai India

The present paper deals with development of a course evaluation survey (CES) questionnaire regarding evaluation of humanities courses (e.g., Commerce/Economics/Law) and assessment of its validity and reliability. Taking help from available questionnaires and also incorporating views from the teachers of the related subjects, the relevant Likert type items were selected. The drafted version of the questionnaire was finalized taking into account feedback from the subject experts. The focus was on simple language to ensure clarity to the students to facilitate accuracy of the collected data. The developed questionnaire consists of five domains involving fifteen Likert type items including a global item. For assessment of its reliability and validity, data were collected among two groups of undergraduate students studying two courses namely Accounts (n = 190) and Law (n = 90). For assessing questionnaire, Karl Pearson Correlation Coefficient, Cronbach’s Alpha coefficient and four factor solutions under factor analysis were used. The analytical results were quite consistent across the data sets (that are, accounts, law and pooled together) that exhibit good psychometric properties. It may thus be concluded that the questionnaire is valid, reliable and may measure what it is intended to measure.

关键词： Course Evaluation Survey reliability Validity Factor Analysis

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南京市两次秋季污染过程及成因分析

环境科学学报 2018年第9期38卷 3414-3423页

作者：黄晶卜令兵胡康 Kanike raghavendra Kumar 南京信息工程大学气象灾害预警与评估协同创新中心中国气象局气溶胶-云-降水重点实验室教育部气象灾害重点实验室南京210044

为探究南京秋季污染过程的特征和影响因素,利用MODIS(Moderate resolution Imaging Spectroradiometer)传感器获得的气溶胶光学厚度(Aerosol Optical Depth)、波长指数(Angstrom Exponent)、火点数据及CALIPSO(Cloud-Aerosol Lidar And Infrared Pathfinder Satellite Observations)卫星数据和来自NECP、MICAPS的温度、相对湿度、风向风速等常规气象要素数据,对南京2015年10月、2016年9月两次污染过程进行分析.研究结果表明:两次污染过程的AE412-470值(埃斯特朗波长指数α)均高于1,由此判断两次污染均以人为排放产生的细粒子为主.但2015年10月的AE412-470值明显低于2016年9月,说明在2015年10月污染过程中粗粒子所占比重高于2016年9月.结合对后向轨迹的分析发现,南京地区2015年10月污染天气的发生还受长距离输送的影响,污染源主要为来自内蒙古、山西等地的污染型沙尘粒子.研究还发现,较高的相对湿度、较低的地表风速、低混合层高度及贴地逆温等气象条件会导致污染物难以扩散稀释而累积在南京地区,造成该区域在秋季出现较严重的污染天气.

关键词：污染天气气溶胶光学厚度(AOD) 波长指数(AE) 气象要素

Dual Based Procedures for Un-Capacitated Minimum Cost Flow Problem

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American Journal of Operations research 2016年第6期6卷 468-479页

作者： Priyank Sinha renduchintala raghavendra Kumar Sharma Industrial and Management Engineering Department IIT Kanpur Kanpur India

In this article, we devise two dual based methods for obtaining very good solution to a single stage un-capacitated minimum cost flow problem. These methods are an improvement to the methods already developed by Sharma and Saxena [1]. We further develop a method to extract a very good primal solution from a given dual solution. We later demonstrate the efficacies and the significance of these methods on 150 random problems.

关键词： Min Cost Flow Transshipment Dual Primal

Nitrosamines crisis in pharmaceuticals-Insights on toxicological implications,root causes and risk assessment:A systematic review

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Journal of Pharmaceutical Analysis 2024年第5期14卷 639-652页

作者： Hemanth P.r.Vikram Tegginamath Pramod Kumar Gunjan Kumar Narasimha M.Beeraka rajashree Deka Sheik Mohammed Suhail Sandeep Jat Namitha Bannimath Gayatiri Padmanabhan ravandur S.Chandan Pramod Kumar Bannimath Gurupadayya Department of Pharmaceutical Chemistry JSS College of Pharmacy MysuruJSS Academy of Higher Education and Research(JSSAHER)Mysuru570015India Xenone Healthcare Pvt.Ltd. New Delhi110076India Department of Pharmaceutics JSS College of Pharmacy MysuruJSS Academy of Higher Education and Research(JSSAHER)Mysuru570015India Department of Human Anatomy I.M.Sechenov First Moscow State Medical University(Sechenov University)Moscow119991Russian Federation Department of Pharmacology Raghavendra Institute of Pharmaceutical Education and Research(RIPER)Ananthapuramu515721India Herman B.Wells Center for Pediatric research Department of PediatricsIndiana University School of MedicineIndianapolisIN46202USA Animal Physiology and Biochemistry Laboratory Department of ZoologyGauhati UniversityGuwahati781014India Department of Pharmacology JSS College of Pharmacy MysuruJSS Academy of Higher Education and Research(JSSAHER)Mysuru570015India Department of Pharmaceutical Analysis National Institute of Pharmaceutical Education and Research(NIPER)-GuwahatiChangsari781101India Department of Pharmacology University of GalwayGalwayH91 TK33Ireland

The presence of N-nitroso compounds,particularly N-nitrosamines,in pharmaceutical products has raised global safety concerns due to their significant genotoxic and mutagenic *** systematic review investigates their toxicity in active pharmaceutical ingredients(APIs),drug products,and pharmaceutical excipients,along with novel analytical strategies for detection,root cause analysis,reformulation strategies,and regulatory guidelines for *** review emphasizes the molecular toxicity of N-nitroso compounds,focusing on genotoxic,mutagenic,carcinogenic,and other physiological ***,it addresses the ongoing nitrosamine crisis,the development of nitrosamine-free products,and the importance of sensitive detection methods and precise risk *** comprehensive overview will aid molecular biologists,analytical scientists,formulation scientists in research and development sector,and researchers involved in management of nitrosamine-induced toxicity and promoting safer pharmaceutical products.

关键词： Carcinogenicity Genotoxicity Mutagenicity Molecular toxicity Nitrosamine impurities Nitrosamine drug substance-related impurities

A robust Denoising Algorithm for Sounds of Musical Instruments Using Wavelet Packet Transform

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Circuits and Systems 2013年第7期4卷 459-465页

作者： raghavendra Sharma Vuppuluri Prem Pyara Department of Electrical Engineering Dayalbagh Educational Institute Agra India

In this paper, a robust DWPT based adaptive bock algorithm with modified threshold for denoising the sounds of musical instruments shehnai, dafli and flute is proposed. The signal is first segmented into multiple blocks depending upon the minimum mean square criteria in each block, and then thresholding methods are used for each block. All the blocks obtained after denoising the individual block are concatenated to get the final denoised signal. The discrete wavelet packet transform provides more coefficients than the conventional discrete wavelet transform (DWT), representing additional subtle detail of the signal but decision of optimal decomposition level is very important. When the sound signal corrupted with additive white Gaussian noise is passed through this algorithm, the obtained peak signal to noise ratio (PSNr) depends upon the level of decomposition along with shape of the wavelet. Hence, the optimal wavelet and level of decomposition may be different for each signal. The obtained denoised signal with this algorithm is close to the original signal.

关键词： DWPT Adaptive Block Denoising Peak Signal to Noise ratio Wavelet Thresholding

Synthesis and characterization of organomodified Na-MMT using cation and anion surfactants

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中国化学前沿:英文版 2011年第2期6卷 153-158页

作者： K.r.Vishnu MAHESH H.N.Narasimha MUrTHY B.E.KUMArASWAMY N.raghavendra r.SrIDHAr M.KrISHNA Niranjan PATTAr ratna PAL B.S.Sherigara Department of P.G Studies and research in Industrial Chemistry Kuvempu UniversityShankaraghattaShimoga 577451India Department of Mechanical Engineering R V College of EngineeringBangalore 560059India

The Sodium Montmorillonite(Na-MMT)is not susceptible to polymer due to its organophilic character and low basal *** primary objective of this study was to improve Na-MMT platelets separation by organically modifying it with cation and anion exchanges using Cetyl trimethyl ammonium bromide(CTAB)and Sodium dodecyl sulfate(SDS)*** spacing,presence of functional groups,Zetapotential with particle size analysis and thermal stability of the Organomodified Na-MMT(OMMT)were characterized using XrD,FTIr,zeta-potential analyzer and TGA *** basal spacing of CTAB modified OMMTincreased to 19.5Åfrom 11.0Åwhich corresponds to the basal spacing of *** SDS modified OMMT did not show any increase in the basal *** spectra of CTAB modified Na-MMT illustrated the attachment of CTAB functional groups to Na-MMT,while the same was absent in the case of SDS modified *** zeta-potential of Na-MMT shifted from–24.88 mV to 15.66 mV in the case of CTAB modified Na-MMTand 12.49 mV for SDS modified Na-MMT,indicating a greater surface potential of the modified *** TGA showed greater weight loss for CTAB modified Na-MMT than that for Na-MMT,indicating the effective Na+ion exchange with alkyl amines.

关键词： Na-MMT CTAB SDS XrD FTIr zetapotential

Extracting structural motifs from pair distribution function data of nanostructures using explainable machine learning

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npj Computational Materials 2022年第1期8卷 2053-2063页

作者： Andy S.Anker Emil T.S.Kjær Mikkel Juelsholt Troels Lindahl Christiansen Susanne Linn Skjærvø Mads ry Vogel Jørgensen Innokenty Kantor Daniel risskov Sørensen Simon J.L.Billinge raghavendra Selvan Kirsten M.Ø.Jensen Department of Chemistry and Nano-Science Center University of Copenhagen2100CopenhagenDenmark Department of Materials University of OxfordParks RoadOxfordUK Department of Chemistry&iNANO Aarhus University8000AarhusDenmark MAX IV Laboratory Lund University22484LundSweden Department of Physics Technical University of Denmark2880LyngbyDenmark Department of Applied Physics and Applied Mathematics Columbia UniversityNew YorkNY10027USA Condensed Matter Physics and Materials Science Department Brookhaven National LaboratoryUptonNY11973USA Department of Computer Science University of Copenhagen2100CopenhagenDenmark Department of Neuroscience University of Copenhagen2200CopenhagenDenmark

Characterization of material structure with X-ray or neutron scattering using *** Distribution Function(PDF)analysis most often rely on refining a structure model against an experimental ***,identifying a suitable model is often a ***,automated approaches have made it possible to test thousands of models for each dataset,but these methods are computationally expensive and analysing the output,*** structural information from the resulting fits in a meaningful way,is *** Machine Learning based Motif Extractor(ML-MotEx)trains an ML algorithm on thousands of fits,and uses SHAP(SHapley Additive exPlanation)values to identify which model features are important for the fit *** use the method for 4 different chemical systems,including disordered nanomaterials and ***-MotEx opens for a type of modelling where each feature in a model is assigned an importance value for the fit quality based on explainable ML.

关键词： explain structural meaningful