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Image Segmentation Based on Block Level and Hybrid Directional Local Extrema

Computers, Materials & Continua 2022年第2期70卷 3939-3954页

作者： Ghanshyam Raghuwanshi yogesh gupta Deepak Sinwar Dilbag Singh Usman Tariq Muhammad Attique Kuntha Pin Yunyoung Nam Manipal University Jaipur Jaipur302026India BMLMunjal University GurugramIndia Bennett University Greater NoidaIndia College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-KhrajSaudi Arabia Department of Computer Science HITEC University TaxilaTaxilaPakistan Department of ICT Convergence Soonchunhyang UniversityAsan 31538Korea Department of Computer Science and Engineering Soonchunhyang UniversityAsanKorea

In the recent decade,the digitalization of various tasks has added great flexibility to human lifestyle and has changed daily routine activities of communities.Image segmentation is a key step in digitalization.Segmentation plays a key role in almost all areas of image processing,and various approaches have been proposed for image segmentation.In this paper,a novel approach is proposed for image segmentation using a nonuniform adaptive strategy.Region-based image segmentation along with a directional binary pattern generated a better segmented image.An adaptive mask of 8×8 was circulated over the pixels whose bit value was 1 in the generated directional binary pattern.Segmentation was performed in three phases:first,an image was divided into sub-images or image chunks;next,the image patches were taken as input,and an adaptive threshold was generated;and finally the image chunks were processed separately by convolving the adaptive mask on the image chunks.Gradient and Laplacian of Gaussian algorithms along with directional extrema patterns provided a double check for boundary pixels.The proposed approach was tested on chunks of varying sizes,and after multiple iterations,it was found that a block size of 8×8 performs better than other chunks or block sizes.The accuracy of the segmentation technique was measured in terms of the count of ill regions,which were extracted after the segmentation process.

关键词： Image segmentation HDEP block-level processing adaptive threshold

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Health care professional training in biomedical waste management at a tertiary care hospital in India

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The Journal of Biomedical Research 2016年第2期30卷 168-170页

作者： Pooja Sarotra Bikash Medhi Vipin Kaushal Vikrant Kanwar yogesh gupta Anil Kumar gupta Department of Pharmacology Post Graduate Institute of Medical Education and ResearchChandigarh-160012India Department of Hospital Administration Post Graduate Institute of Medical Education and ResearchChandigarh-160012India

Dear Editor：Biomedical waste is any waste generated during the diagnosis,treatment or immunization of human beings or animals,in research activities pertaining to or in the production of or testing of biologicals,and all other categories waste generated by healthcare activities.It includes a broad range of materials from used needles and syringes,soiled dressings,body parts,diagnostic samples,blood,chemicals,pharmaceuticals,

关键词： biomedical professional chemicals India tertiary awareness sanitary hazardous disinfection medicines

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Cosmetic evaluation of surgical scars after external dacryocystorhinostomy

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International Journal of Ophthalmology(English edition) 2016年第12期9卷 1745-1750页

作者： Syed Ali Raza Rtzvi Mohammad Saquib Rakesh Maheshwari yogesh gupta Zafr Igbal Purleet Maheshwari Institute of Ophthalmology Jawaharlal Nehru Medical College AMU Aligarh.UP 202002 India Department of Oto-Rhino-Laryngology Jawaharlal Nehru Medical College AMU Aligarh.UP 202002 India Department of Oto-Rhino-Laryngology Era's Lucknow Medical College and Hospital Lucknow.UP 226003 India

AIM： To evaluate the surgical scars of external dacryocystorhinostomy （DCR） cosmetically. METHODS： Totally 50 consecutive cases of primary acquired nasolacrimal duct obstruction （PANDO） were included in the study. Surgical scars were assessed by the patients and two independent observers at 2, 6 and 12wk postoperatively on the basis of visibility of the scars and still photographs respectively and were graded from 0-3. Kappa test was utilised to check the agreement of scar grading between the two observers. Wilcoxan signed ranks test was used to analyse the improvement of scar grading.RESULTS： Thirty-four （68%） patients graded their incision site as very visible （grade 3） at 2wk. At 6 and 12wk, incision site was observed as grade 3 by 7 （14%） and 1 （2%） patients respectively. Photographic evaluation of patients by 2 observers showed an average score of 2.75, 1.94 and 0.94 at 2, 6 and 12wk respectively. Change in scar grading from grade 3 to grade 0 in consecutive follow-up （2, 6 and 12wk） was found to be highly significant both for the patient as well for the observers （P〈0.0001）.CONCLUSION： The external DCR is a highly effective and safe procedure and in view of low percentage of cases who complained of marked scarring in the present study, thus scarring should not be the main ground for deciding the approach to DCR surgery, even in young cosmetically conscious patients.

关键词： cosmetic surgical scar external dacryocystorhinostomy primary acquired nasolacrimal duct obstruction

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Numerical analysis approach for models of COVID-19 and other epidemics

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第3期12卷 40-62页

作者： Ritu yogesh gupta Department of Mathematics Jaypee Institute of Information Technology A-10 Sector-62Noida-201309Uttar PradeshIndi

The world wide spread of COVID-19 epidemic has instigated an unprecedented demand and supply of research related to this epidemic.Together with medical research for treatment and cure of the pandemic,efficient mathematical modeling of epidemics is the need of hour.First,this paper depicts a detailed and comprehensive compendium of various numerical methods used for infectious diseases modeling during last 14 years including the very recent work done for COVID-19 models.This gives researchers a good insight about past work done,present efforts and future scope of numerical analysis methods for epidemic modeling.Second,this paper also proposes its numerical analysis approach based on Adomian decomposition method(ADM)for generalized SEIR model of COVID-19.The proposed method is shown to give very accurate numerical results.

关键词： COVID-19 epidemic model numerical methods Adomian decomposition method(ADM)

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Physical Characterization of Ionic Liquid-Modified Polyvinyl Alcohol and Sodium Thiocyanate Polymer Electrolytes for Electrochemical Double-Layer Capacitor Application

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Journal of Shanghai Jiaotong university(Science) 2023年第2期28卷 161-171页

作者： AZEMTSOP Manfo Theodore MEHRA Ram Mohan KUMAR yogesh gupta Meenal Material Research Laboratory Department of PhysicsSBSRSharda UniversityGreater Noida 201310India Department of Electronics and Communication Engineering Sharda UniversityGreater Noida 201310India Department of Physics Atma Ram Sanatan Dharma CollegeUniversity of DelhiNew Delhi 110021India

Novel gel polymer electrolytes(GPEs)composed of polyvinyl alcohol(PVA)and sodium thiocyanate were developed via a solution casting technique.An ionic liquid(IL),1-ethyl-3-methyl-imidazolium tricyanomethanide([EMIM][TCM]),was doped into a polymer–salt complex system(PVA+NaSCN)to further enhance the conductivity.IL-doped polymer electrolyte(ILDPE)films were characterized using X-ray diffraction(XRD),polarized optical microscopy(POM),Fourier-transform infrared(FTIR)spectroscopy,and conductivity measurements.XRD was performed to check the degree of crystallinity and amorphicity of the ILDPE films,and the amorphicity of GPEs increased with the increase of the IL content.POM was employed to evaluate the changes in the surface morphology due to the inclusion of salt and IL in the PVA.The compositional nature of the GPE films was examined via FTIR studies.The electrical and electrochemical properties were characterized by cyclic voltammetry and electrochemical impedance spectroscopy.The maximum conductivity for the GPE film was estimated to be 1.10×10^(-5) S/cm for 6%(mass fraction)of IL in the polymer–salt complex.The ionic transference number was approximately 0.97.An electrochemical double-layer capacitor(EDLC)was built from optimized GPE films and reduced graphene oxide-based electrodes.The specific capacitance calculated from the cyclic voltammograms of the EDLC cells was 3 F/g.

关键词： ionic conductivity ionic liquid(IL) mobility transference number cyclic voltammetry polymer electrolyte

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用斑点ELISA和间接ELISA检测蓝舌病病毒抗体的比较

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动物检疫 1991年第4期8卷 14-15页

作者： yogesh gupta 娄高明

目前广泛应用免疫扩散(ID)试验检测蓝舌病毒(BTV)群特异抗体,但敏感性较差。Manning和Chen(1980)建立的ELISA检测BTV抗体有很高的敏感性。而斑点ELISA(DIA)是一种快速、简便的另一种酶免疫检测方法。

关键词：蓝舌病病毒抗体 ELISA

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Cylindrical gate all around Schottky barrier MOSFET with insulated shallow extensions at source/drain for removal of ambipolarity:a novel approach

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Journal of Semiconductors 2017年第12期38卷 42-47页

作者： Manoj Kumar yogesh Pratap Subhasis Haldar Mridula gupta R.S.gupta Semiconductor Device Research Laboratory Department of Electronic ScienceUniversity of Delhi South CampusNew Delhi 110021India Department of Electronics Shaheed Rajguru College for Applied Sciences for Women University of DelhiNew Delhi 110021India Department of Physics Motilal Nehru CollegeUniversity of DelhiNew Delhi 110021India Department of Electronics and Communication Engineering Maharaja Agrasen Institute of TechnologyNew Delhi 110086India

In this paper TCAD-based simulation of a novel insulated shallow extension （ISE） cylindrical gate all around （CGAA） Schottky barrier （SB） MOSFET has been reported, to eliminate the suicidal ambipolar behavior （bias-dependent OFF state leakage current） of conventional SB-CGAA MOSFET by blocking the metal-induced gap states as well as unwanted charge sharing between source/channel and drain/channel regions. This novel structure offers low barrier height at the source and offers high ON-state current. The IoN/Iovr： of ISE-CGAA-SB-MOS- FET increases by 1177 times and offers steeper subthreshold slope （-60 mV/decade）. However a little reduction in peak cut off frequency is observed and to further improve the cut-off frequency dual metal gate architecture has been employed and a comparative assessment of single metal gate, dual metal gate, single metal gate with ISE, and dual metal gate with ISE has been presented. The improved performance of Schottky barrier CGAA MOSFET by the incorporation of ISE makes it an attractive candidate for CMOS digital circuit design. The numerical simulation is performed using the ATLAS-3D device simulator.

关键词： ATLAS-3D cylindrical gate all around dual metal gate insulated shallow extension Schottky barrier

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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

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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

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Case report on an infant presenting with hypoglycemia,and milky serum

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Asian Pacific Journal of Tropical Biomedicine 2012年第4期2卷 331-332页

作者： yogesh Kumar gupta Anushre Prasad Pushpa Kini Prashant Naik Deepti Choprra Krishnananda Prabhu Department of Paediatrics Kasturba Medical CollegeManipal University Department of Biochemistry Kasturba Medical CollegeManipal University

A 4-month-old male baby who presented in a moribund condition with seizures was found to have hepatomegaly,hypoglycemia and milky serum.Serum triglycerides were markedly elevated(3168 mg/dL) with cholesterol being 257 mg/dL and high density lipoprotein levels were low(19 mg/dL).The possibility of glycogen storage disease type Ⅰ was considered in the diagnosis.Infants with glycogen storage disease type Ⅰ may present like sepsis.The association of hepatomegaly, hypoglycemia and abnormal lipid profile stated above should alert the physician to consider glycogen storage disease type Ⅰ in the diagnosis.

关键词： Hypertriglyceridemia Hypoglycemia Glycogen storage disorder type Ⅰ Milky serum

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