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Transfer Learning-Based Class Imbalance-Aware Shoulder Implant Classification from X-Ray Images

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Journal of Bionic Engineering 2024年第2期21卷 892-912页

作者： Marut jindal Birmohan Singh Department of Computer Science and Engineering Sant Longowal Institute of Engineering and TechnologySangrur148106PunjabIndia

Total shoulder arthroplasty is a standard restorative procedure practiced by orthopedists to diagnose shoulder arthritis in which a prosthesis replaces the whole joint or a part of the *** is often challenging for doctors to identify the exact model and manufacturer of the prosthesis when it is *** paper proposes a transfer learning-based class imbalance-aware prosthesis detection method to detect the implant’s manufacturer automatically from shoulder X-ray *** framework of the method proposes a novel training approach and a new set of batch-normalization,dropout,and fully convolutional layers in the head *** employs cyclical learning rates and weighting-based loss calculation *** modifications aid in faster convergence,avoid local-minima stagnation,and remove the training bias caused by imbalanced *** proposed method is evaluated using seven well-known pre-trained models of VGGNet,ResNet,and DenseNet *** is performed on a shoulder implant benchmark dataset consisting of 597 shoulder X-ray *** proposed method improves the classification performance of all pre-trained models by 10–12%.The DenseNet-201-based variant has achieved the highest classification accuracy of 89.5%,which is 10%higher than existing ***,to validate and generalize the proposed method,the existing baseline dataset is supplemented to six classes,including samples of two more implant *** results have shown average accuracy of 86.7%for the extended dataset and show the preeminence of the proposed method.

关键词： Biomedical engineering Artificial intelligence Total shoulder arthroplasty Prosthesis identification Biomedical image classification

Devanagari Handwriting Grading System Based on Curvature Features

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Computer Modeling in Engineering & Sciences 2017年第2期113卷 195-202页

作者： Munish Kumar Simpel Rani jindal Department of Computer Applications GZS Campus College of Engineering&Technology(Maharaja Ranjit Singh Punjab Technical University)BathindaPunjabIndia Computer Science and Engineering Section Yadavindera College of EngineeringTalwandi SaboBathindaPunjabIndia.

Grading of writers in perspective of their handwriting is a challenging task owing to various writing styles of different *** paper presents a framework for grading of Devanagari writers in perspective of their *** framework of grading can be useful in conducting the handwriting competitions and then deciding the winners on the basis of an automated *** the set of features is a challenging task for implementing a handwriting grading system of particular *** this paper,curvature features,namely,parabola curve fitting and power curve fitting have been considered for extracting the vital information of writers,which can be helpful in grading the *** obtaining the classification score,k-NN classifier has been considered in the present *** printed Devanagari font styles,namely,Devlys,Krishna,Krutidev,and Utsaah have been considered for train the proposed model of handwriting *** evaluating the effectiveness of the proposed framework,we have conducted a mock test of 75 Devanagari writers(Left handed and Right handed)and noticed that the proposed framework performing well suitable for conducting the handwriting competition of Devanagari text *** work is also newly in the ground of Devanagari text recognition.

关键词： Handwritten character recognition curvature features parabola curve fitting power curve fitting k-NN

Shallow foundation response variability due to soil and model parameter uncertainty

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Frontiers of Structural and Civil Engineering 2014年第3期8卷 237-251页

作者： Prishati RAYCHOWDHURY Sumit jindal Department of Civil Engineering Indian Institute of Technology Kanpur Kanpur UP-208016 India

Geotechnical uncertainties may play crucial role in response prediction of a structure with substantial soil-foundation-structure-interaction （SFSI） effects. Since the behavior of a soil-foundation system may significantly alter the response of the structure supported by it, and consequently several design decisions, it is extremely important to identify and characterize the relevant parameters. Moreover, the modeling approach and the parameters required for the modeling are also critically important for the response prediction. The present work intends to investigate the effect of soil and model parameter uncertainty on the response of shallow foundation-structure systems resting on dry dense sand. The SFSI is modeled using a beam-on-nonlinear-winkler-foundation （BNWF） concept, where soil beneath the foundation is assumed to be an assembly of discrete, nonlinear elements composed of springs, dashpots and gap elements. The sensitivity of both soil and model input parameters on shallow foundation responses are investigated using first-order second-moment （FOSM） analysis and Monte Carlo simulation through Latin hypercube sampling technique. It has been observed that the degree of accuracy in predicting the responses of the shallow foundation is highly sensitive soil parameters, such as friction angle, Poisson＇s ratio and shear modulus, rather than model parameters, such as stiffness intensity ratio and spring spacing; indicating the importance of proper characterization of soil parameters for reliable soil- foundation response analysis.

关键词： shallow foundation sensitivity analysis centrifuge data first-order-second-moment (FOSM) method,parameter uncertainty

Evaluating location specific strain rates, temperatures,and accumulated strains in friction welds through microstructure modeling

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Defence Technology（防务技术） 2018年第2期14卷 83-92页

作者： Javed Akram Prasad Rao Kalvala Vikas jindal Mano Misra Dept. of Metallurgical Engineering University of Utah Dept. of Metallurgical Engineering Indian Institute of Technology(BHU)

A microstructural simulation method is adopted to predict the location specific strain rates, temperatures, grain evolution, and accumulated strains in the Inconel 718 friction welds. Cellular automata based 2D microstructure model was developed for Inconel 718 alloy using theoretical aspects of dynamic recrystallization. Flow curves were simulated and compared with experimental results using hot deformation parameter obtained from literature work. Using validated model, simulations were performed for friction welds of Inconel 718 alloy generated at three rotational speed i.e., 1200, 1500, and1500 RPM. Results showed the increase in strain rates with increasing rotational speed. These simulated strain rates were found to match with the analytical results. Temperature difference of 150 K was noticed from center to edge of the weld. At all the rotational speeds, the temperature was identical implying steady state temperature(0.89 T_m) attainment.

关键词： Microstructure modeling Dynamic recrystallization Friction welding Inconel 718 EBSD Hot deformation Strain map

Study of various ground state decay mechanisms of Actinide nuclei

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Chinese Physics C 2023年第10期47卷 197-212页

作者： Chahat jindal Nitin Sharma Manoj K.Sharma School of Physics and Materials Science Thapar Institute of Engineering&TechnologyPatiala-147004PunjabIndia

The special property of the actinide mass region is that nuclei belonging to this group are radioactive and undergo different ground state processes,such as alpha decay,cluster radioactivity(CR),heavy particle radioactivity(HPR),and spontaneous fission(SF).In this study,the probable radioactive decay modes of the heavy mass region(Z=89−102)are studied within the framework of the preformed cluster model(PCM).In the PCM,the radioactive decay modes are explored in terms of the preformation probability(P0)and penetration probability(P)at the turning point Ra,where the penetration of fragments is initiated[Ra=RT(touching state)+ΔR(neck length parameter)].First,the alpha decay half-lives are calculated for light and heavy nuclei,and Ra points are obtained by optimizing the neck length *** Ra points are further employed to fix the Q-value dependent turning point(Ra(Q)).Then,using the(Ra(Q))relation,the decay half-lives are computed,and the calculated results are compared with the available theoretical and experimental *** isotopical trend of P0 and P is studied with respect to the mass number of the parent and daughter nucleus,*** CR and HPR channels are also explored,and a comparison of calculated data is conducted with the available *** analysis of the fragmentation potential and preformation probability is carried out for alpha decay and *** mass distribution of the nuclei is studied as a function of fragment mass(A2)by considering the spherical and hot-compact deformation of the decaying ***,the most probable fission fragments are identified using the fragmentation structure,and the corresponding fission fragment total kinetic energy of the identified fragments is calculated and compared with available data,wherever applicable.

关键词： Alpha decay cluster radioactivity spontaneous fission heavy particle radioactivity ground state decay

S-,N-and C-doped ZnO as semiconductor photocatalysts:A review

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Frontiers of Materials Science 2019年第1期13卷 1-22页

作者： Vijaya KUMARI Anuj MITTAL Jitender jindal Suprabha YADAV Naveen KUMAR Department of Chemistry Maharshi Dayanand University RohtakIndia Department of Chemistry R.P.S.Degree CollegeMohindergarhIndia

In the past few decades,many novel non-metal doped ZnO materials have developed hasty interest due to their adaptable properties such as low recombination rate and high activity under the solar light *** this article,we compiled recent research advances in non-metal(S,N,C)doped ZnO,emphasizing on the related mechanism of catalysis and the effect of non-metals on structural,morphological,optical and photocatalytic characteristics of *** review will enhance the knowledge about the advancement in ZnO and will help in synthesizing new ZnO-based materials with modified structural and photocatalytic properties.

关键词： degradation recombination mechanism photocatalyst pollutant

Erlotinib usage after prior treatment with gefitinib in advanced non-small cell lung cancer: A clinical perspective and review of published literature

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World Journal of Clinical Oncology 2014年第5期5卷 858-864页

作者： Navneet Singh Aditya jindal Digambar Behera Department of Pulmonary Medicine Postgraduate Institute of Medical Education and Research

Erlotinib and gefitinib are among the most widely researched, used and available molecularly targeted therapies for treatment of advanced non-small cell lung cancer(NSCLC). They are both tyrosine kinase inhibitors(TKIs) of the epidermal growth factor receptor(EGFR). In the past decade, there have been reports on clinical benefit from use of erlotinib after gefitinib failure in NSCLC patients. A review of published literature on this focussed topic is provided herein. Pooled analysis of published literature shows that majority of patients were female(60.6%), non-smokers(64.5%), had adenocarcinoma histology(88.3%) and were of East Asian ethnicity(92.3%). Presence of sensitizing EGFR mutation was detected in 48.4% of subjects. Disease control rates with prior gefitinib therapy and with subsequent erlotinib treatment were 79.4% and 45.4% respectively. Based upon our review, the most important predictive factor for clinical benefit from erlotinib identified was previous response to gefitinib. The exact explanations for the potential benefit from erlotinib use in this patient population is still not known and further studies are required to determine the role of molecular mechanismsespecially those related to resistance to initial EGFR TKI therapy.

关键词： Gefitinib Erlotinib Non-small cell lung cancer Epidermal growth factor receptor Tyrosine kinase inhibitor

Leukocyte adhesion defect:Where do we stand circa 2019?

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Genes & Diseases 2020年第1期7卷 107-114页

作者： Jhumki Das Avinash Sharma Ankur jindal Vaishali Aggarwal Amit Rawat Allergy Immunology Unit Department of PediatricsAdvanced Pediatrics CentrePostgraduate Institute of Medical Education and ResearchChandigarhIndia Department of Pediatrics Dr Rajendra Prasad Government Medical CollegeTandaKangraHimachal PradeshIndia

Migration of polymorphonuclear leukocytes from bloodstream to the site of inflammation is an important event required for surveillance of foreign *** trafficking of leukocytes from bloodstream to the tissue occurs in several distinct steps and involves several adhesion *** in adhesion of leukocytes to vascular endothelium affecting their subsequent migration to extravascular space gives rise to a group of rare primary immunodeficiency diseases(PIDs)known as Leukocyte Adhesion Defects(LAD).Till date,four classes of LAD are discovered with LAD I being the most common *** I is caused by loss of function of common chain,cluster of differentiation(CD)18 of β2 integrin *** patients suffer from life-threatening bacterial infections and in its severe form death usually occurs in childhood without bone marrow *** II results from a general defect in fucose *** patients suffer from less severe bacterial infections and have growth and mental *** blood group phenotype is also observed in these *** III is caused by abnormal integrin *** III patients suffer from severe bacterial and fungal *** frequently show delayed detachment of umbilical cord,impaired wound healing and increased tendency to *** IV is the most recently described *** is caused by defects in β2 and α4β1 integrins which impairs lymphocyte *** IV patients have monogenic defect in cystic-fibrosis-transmembraneconductance-regulator(CFTR)gene,resulting in cystic *** and genetic etiology of all LAD syndromes are discussed in detail in this paper.

关键词： Neutrophilic defect Neutrophilic leukocytosis Phagocyte rolling Phagocytes Primary immunodeficiency disorders

Encrusted cystitis and ascites due to urethral calculus

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Asian Journal of Urology 2022年第2期9卷 197-198页

作者： Tarun jindal Satyadip Mukherjee Department of Uro-oncology Tata Medical CentreKolkataIndia

Dear editor,A 55-year-old man presented with dyspnea and involuntary dribbling of urine for 1 *** had history of straining during micturition and weak urinary stream for a *** examination,he was disoriented and had abdominal *** revealed marked ascites,pleural effusion,bilateral hydroureteronephrosis,and distended bladder with prostatic urethral calculus.A non-contrast computerized tomography scan additionally showed thickened bladder wall with florid mucosal calcification suggestive of encrusted cystitis and a 2.9 cm×2.5 cm calculus in the prostatic urethra extending to the bulbar urethra(Fig.1).His hemoglobin was 6 g/dL;urea and creatinine were elevated(114 mg/dL and 8.4 mg/dL,respectively);and the leucocyte count was 16.3×109/*** initial resuscitation,ultrasound guided supra-pubic catheterization was *** urine pH was 8.4 while the microscopy revealed numerous pus cells,bacteria,and inorganic crystals.A nephrology consultation was taken and considering the clinical picture of encrusted cystitis,he started on intravenous *** also received a session of *** patient died of cardiovascular collapse on the second post admission *** urine culture report,obtained posthumously,revealed Corynebacterium urealyticum corroborating the diagnosis of encrusted *** strain was multidrug resistant and showed only sensitivity to teicoplanin and vancomycin.

关键词： bladder urine ascites