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A robust test of uncertain linear systems

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控制理论与应用（英文版） 2009年第3期7卷 277-280页

作者： yogesh v. hote D. Roy CHOUDHURY J. R. P. GUPTA Department of Instrumentation and Control Engineering Delhi University Department of Computer Engineering I. P. University

In this paper, it is shown that for low-order uncertain systems, there is no need to calculate all the minimum and maximum values of the coefficients for a perturbed system which is expressed in terms of polynomials and hence no need to formulate and test all the four Kharitonov＇s polynomials. Furthermore, for higher-order systems such as n ≥ 5, the usual four Kharitonov＇s polynomials need not be tested initially for sufficient condition of perturbed systems; rather, the necessary condition can be checked before going for sufficient condition. In order to show the effectiveness of the proposed method, numerical examples are shown and computational efficiency is highlighted.

关键词： Kharitonov's theorem Robust stability Routh criterion

A simple approach for stability margin of discrete systems

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控制理论与应用（英文版） 2011年第4期9卷 567-570页

作者： yogesh v. hote J. R. P. GUPTA D. Roy CHOUDHURY Department of Electrical Engineering Indian Institute of Technology (IIT) Department of Instrumentation and Control Engineering Delhi University Department of Information Technology (I.T.) M.A.I.T.

In this paper, a technique is presented to determine the stability margin of the discrete systems using recursive algorithm for power of companion matrix and Gerschgorin Theorem and hence sufficient condition of stability is obtained. The method is illustrated with an example and it is compared with other methods proposed in the literature. The results have applications in the filter design.

关键词： Gerschgorin theorem Power of companion matrix Discrete systems Stability margin

New Approaches for Image Compression Using Neural Network

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Journal of Intelligent Learning Systems and Applications 2011年第4期3卷 220-229页

作者： vilas H. Gaidhane vijander Singh yogesh v. hote Mahendra Kumar 不详

An image consists of large data and requires more space in the memory. The large data results in more transmission time from transmitter to receiver. The time consumption can be reduced by using data compression techniques. In this technique, it is possible to eliminate the redundant data contained in an image. The compressed image requires less memory space and less time to transmit in the form of information from transmitter to receiver. Artificial neural net- work with feed forward back propagation technique can be used for image compression. In this paper, the Bipolar Coding Technique is proposed and implemented for image compression and obtained the better results as compared to Principal Component Analysis (PCA) technique. However, the LM algorithm is also proposed and implemented which can acts as a powerful technique for image compression. It is observed that the Bipolar Coding and LM algorithm suits the best for image compression and processing applications.

关键词： Image Compression Feed Forward Back Propagation Neural Network Principal Component Analysis (PCA) Levenberg-Marquardt (LM) Algorithm PSNR MSE

Evaluation of antiplasmodial properties in 15 selected traditional medicinal plants from India

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Journal of Integrative Medicine 2020年第1期18卷 80-85页

作者： yogesh Subhash Biradar Swathi Bodupally Harish Padh Department of Pharmacognosy and Phytochemistry Bharat School of PharmacyMangalpallyIbrahimpatnamHyderabad 501510TelanganaIndia Department of Pharm D Bharat School of PharmacyMangalpallyIbrahimpatnamHyderabad 501510TelanganaIndia Department of Biotechnology B.V.Patel Pharmaceutical Education and Research Development CentreThaltej-Gandhinagar HighwayThaltejAhmedabad 380054GujaratIndia

Objective:The objective of this study was to evaluate the in vitro antiplasmodial properties against malaria parasite in 15 plants mentioned in Indian traditional medicine ***:In vitro antiplasmodial activity of methanolic extracts obtained from Indian traditional medicinal plants was evaluated on Plasmodium falciparum of FCK2 and INDO strains using schizont maturation inhibition assay and parasite lactate dehydrogenase inhibition ***:Methanolic extracts of Adhatoda zeylanica,Embelia ribes,Piper nigrum and Plumbago zeylanica exhibited more than 50%inhibition in both the stains in schizont maturation inhibition *** extracts of seven medicinal plants exhibited antiplasmodial activity at half maximal inhibitory concentration(IC50)ve medicinal plants exhibited antiplasmodial activity at IC50vity in PfLDH inhibition *** and *** exhibited improved activity against resistant in comparison to sensitive ***:*** and *** were the most promising extracts from this study and deserve further investigation of their antiplasmodial properties.

关键词： Medicinal plants Plasmodium falciparum Schizont maturation inhibition assay Lactate dehydrogenase inhibition assay Cytotoxicity

Alternative models of cancer stem cells: The stemness phenotype model, 10 years later

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World Journal of Stem Cells 2021年第7期13卷 934-943页

作者： vivek Kaushik yogesh Kulkarni Kumar Felix Neelam Azad Anand Krishnan v Iyer Juan Sebastian Yakisich School of Pharmacy Department of Pharmaceutical SciencesHampton UniversityHamptonVA 23668United States

The classical cancer stem cell(CSCs)theory proposed the existence of a rare but constant subpopulation of *** this model cancer cells are organized hierarchically and are responsible for tumor resistance and tumor ***,eliminating CSCs will eventually lead to cure of *** simplistic model has been challenged by experimental *** 2010 we proposed a novel and controversial alternative model of CSC biology(the Stemness Phenotype Model,SPM).The SPM proposed a non-hierarchical model of cancer biology in which there is no specific subpopulation of CSCs in ***,cancer cells are highly plastic in term of stemness and CSCs and non-CSCs can interconvert into each other depending on the *** model predicts the existence of cancer cells ranging from a pure CSC phenotype to pure non-CSC phenotype and that survival of a single cell can originate a new *** the past 10 years,a plethora of experimental evidence in a variety of cancer types has shown that cancer cells are indeed extremely plastic and able to interconvert into cells with different stemness *** this review we will(1)briefly describe the cumulative evidence from our laboratory and others supporting the SPM;(2)the implications of the SPM in translational oncology;and(3)discuss potential strategies to develop more effective therapeutic regimens for cancer treatment.

关键词： Cancer Stem cells Stemness Plasticity Chemotherapy Interconversion

Photometric studies of two W UMa type variables in the field of distant open cluster NGC 6866

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Research in Astronomy and Astrophysics 2016年第4期16卷 87-96页

作者： yogesh Chandra Joshi Rukmini Jagirdar Santosh Joshi Aryabhatta Research Institute of Observational Sciences Manora PeakNainital 263002India Center for Advanced Study in Astronomy Osmania UniversityHyderabad 500007India

We present photometric analysis of the two W UMa type binaries identified in the field of distant open star cluster NGC 6866. Although these systems, namely ID487 and ID494, were reported by Joshi et al., a detailed study of these stars has not been carried out before. The orbital periods of these stars are found to be 0.415110±0.000001 day and 0.366709±0.000004 day, respectively. Based on the photometric and infrared colors, we find their respective spectral types to be K0 and K3. The photometric light vari- ations of both stars show the O＇Connell effect which can be explained by employing a dark spot on the secondary components. The v and I band light curves are analyzed using the Wilson-Devinney （WD） code and relations given by Gazeas which yield radii and masses for the binary components of star ID487 of R1 = 1.24 ± 0.01R,R2 = 1.11 4- 0.02Re, and M1 = 1.24 ± 0.02Me, M2 = 0.96 ±0.05Me and for star ID494 of R1 = 1.22 ± 0.02Re, R2 = 0.81 4- 0.01 Re, and M1 = 1.20 4- 0.06 Me, M2 = 0.47 4- 0.01 Me.

关键词： methods: observational -- techniques: photometric -- binaries: eclipsing -- stars: fundamen-tal parameters

Formononetin alleviates diabetic cardiomyopathy by inhibiting oxidative stress and upregulating SIRT1 in rats

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Asian Pacific Journal of Tropical Biomedicine 2020年第6期10卷 254-262页

作者： Manisha J.Oza yogesh A.Kulkarni Shobhaben Pratapbhai Patel School of Pharmacy&Technology Management SVKM's NMIMSV.L.Mehta RoadVile Parle(W)Mumbai 400056India SvKM's Dr.Bhanuben Nanavati College of Pharmacy Vile Parle(W)Mumbai 400056India

Objective:To evaluate the effect of formononetin on type 2 diabetic ***:Diabetes was induced by feeding high-fat diet for 2 weeks and administration of 35 mg/kg of streptozotocin in *** was administered at 10,20 and 40 mg/kg for 16 weeks once a *** glucose,lipid parameters,and cardiac markers in blood samples were *** weight and relative heart weight were *** parameters,oxidative stress parameters and silence information regulator 1(SIRT1)expression in cardiac tissue were *** changes in cardiac tissue were also ***:Formononetin significantly reduced the levels of glucose,triglycerides,cholesterol,low density lipoprotein,creatine kinaseMB,lactate dehydrogenase and aspartate *** addition,formononetin significantly improved hemodynamic parameters,alleviated oxidative stress and increased SIRT1 ***:The study indicates that formononetin can improve hyperglycemia and hyperlipemia,reduce oxidative stress and increase SIRT1 *** can be a potential therapeutic agent for diabetic cardiomyopathy.

关键词： Cardiomyopathy Formononetin Type 2 diabetes SIRT1 Creatinine kinase Cardiac hypertrophy

A study of knowledge,attitude and practices about otitis media in parents in Navi-Mumbai

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Journal of Otology 2021年第2期16卷 89-94页

作者： yogesh G.Dabholkar Anmol Wadhwa Atul Deshmukh Department of ENT School of MedicineD.Y.Patil UniversityNavi MumbaiIndia Centre for Interdisciplinary Research D.Y.Patil UniversityNavi MumbaiIndia

Although otitis media poses a serious health risk in developing countries,being a frequent occurrence in children below five years of age,parental awareness and practices about otitis media have not been adequately *** cross-sectional study was undertaken in Navi Mumbai schools,from October 2019 to December 2019,wherein parents with childrenv were used to study association between gender,age-group and education of parents with their knowledge,practice and attitude about otitis *** of 425 valid responses,overall most parents displayed adequate knowledge(77%),positive attitude(61%)and good care-seeking practices(70%).There was a positive correlation of knowledge and practice with level of *** study shows acceptable levels of knowledge,attitude and practices in parents about otitis *** who did not seek treatment from health centre attributed the behaviour to poverty,ignorance and lack of health *** positive correlation of knowledge and practices with level of education highlights the importance of role of education in modifying parental awareness and care seeking *** findings call for a need to further strengthen community-based healthcare and improve parental confidence in healthcare services for early detection and adequate treatment of otitis media.

关键词： Otitis media Middle ear infections Children Knowledge Attitude Practices

A novel sub 20 nm single gate tunnel field effect transistor with intrinsic channel for ultra low power applications

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Journal of Semiconductors 2016年第5期37卷 30-34页

作者： Pranav Kumar Asthana yogesh Goswami Bahniman Ghosh Department of Electrical Engineering Indian Institute of Technology Kanpur Microelectronics Research Center University of Texas at Austin

We propose a nanoscale single gate ultra thin body intrinsic channel tunnel field effect transistor using the charge plasma concept for ultra low power applications. The characteristics of TFETs （having low leakage） are improved by junctionless TFETs through blending advantages of Junctionless FETs （with high on current）. We further improved the characteristics, simultaneously simplifying the structure at a very low power rating using an InAs channel. We found that the proposed device structure has reduced short channel effects and parasitics and provides high speed operation even at a very low supply voltage with low leakage. Simulations resulted in Iovv of - 9 × 10-16A/um, IoN of ,-20uA/um, ION/IoFF of--2× 1010, threshold voltage of 0.057 v, subthreshold slope of 7 mv/dec and DIBL of 86 mv/v for PolyGate/HfO2/InAs TFET at a temperature of 300 K, gate length of 20 nm, oxide thickness of 2 nm, film thickness of 10 nm, low-k spacer thickness of 10 nm and vDD of 0.2 v.

关键词： band-to-band tunneling (BTBT) tunnel field effect transistor (TFET) junctionless tunnel field effecttransistor (JLTFET) ION/IOFF ratio low power