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A two-tier supply chain model under two distributions with MTTF,rework,variable production rate and lead time

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Journal of Management Analytics 2022年第4期9卷 532-558页

作者： b.karthick R.Uthayakumar Department of Mathematics The Gandhigram Rural Institute(Deemed to be University)GandhigramTamilnaduIndia

This article considers the two-level supply chain model incorporating an imperfect production process under a variable lead *** cost of producing a unit item is calculated as a function of the production *** addition,two alternative production functions(linear and quadratic functions)are used to relate process quality and production *** time demand follows two different distributions,based on which two mathematical formulations are described in this *** the first model,the lead time demand follows a normal *** the second model,the lead time demand doesn’t follow any particular distribution,but the mean and the standard deviation are *** lead time length is minimized by incorporating the lead time crashing *** research aims to analyze the optimized total cost of the supply chain under two different distributions.

关键词： integrated vendor buyer quality management production rate rework controllable lead time

Phase evolution and mechanical properties of novel nanocrystalline Y_(2)(TiZrHfMoV)_(2)O_(7) high entropy pyrochlore

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Journal of Materials Science & Technology 2021年第23期82卷 214-226页

作者： G.karthick Lavanya Raman b.S.Murty Department of Metallurgical and Materials Engineering Indian Institute of Technology MadrasChennai600036India Indian Institute of Technology Hyderabad Kandi502285India

High entropy pyrochlores(HEP)are potential candidates as dispersoids in the oxide dispersed strengthened steels or alloys,which can be used in nuclear reactors and supercritical *** the first time,HEP oxides Y_(2)(TiZrHfMoV)_(2)O_(7) were synthesized with Y_(2)Ti_(2)O_(7) as a base structure with the b site(Ti)substituted with five cations through reverse co-precipitation technique in the nanocrystalline form at lowest synthesis *** synthesis parameters for Y_(2)(TiZrHfMoV)_(2)O_(7)(5C)and other derived compositions(five compositions of four cationic systems with each cation eliminated at b site from 5 C)are optimised to obtain lower crystallite and particle sizes.5C has a smaller crystallite size(27 nm)than other single-phase *** cation’s influence,oxidation state,and oxygen vacancy in the phase formation were analysed through *** single-phase HEPs are consolidated through spark plasma sintering.Y_(2)(TiZrHfMo)_(2)O_(7)(4 C-V)shows the highest hardness among the compositions reported so far due to its finer grain size,and Y_(2)(TiHfMoV)_(2)O_(7)(4 C-Zr)has a higher Young’s modulus compared to other single-phase composition due to its higher degree of order in the structure.

关键词： High entropy pyrochlores Reverse co-precipitation b site substitution Hardness Young’s modulus

Iterative Dichotomiser Posteriori Method based Service Attack Detection in Cloud Computing

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Computer Systems Science & Engineering 2023年第2期44卷 1099-1107页

作者： b.Dhiyanesh K.karthick R.Radha Anita Venaik Hindusthan College of Engineering and Technology Coimbatore641032India Sona College of Technology Salem636005India Karpagam Institute of Technology Coimbatore641105India Amity business School Amity UniversityNoida201301India

Cloud computing(CC)is an advanced technology that provides access to predictive resources and data *** cloud environment represents the right type regarding cloud usage model ownership,size,and rights to *** introduces the scope and nature of cloud *** recent times,all processes are fed into the system for which consumer data and cache size are *** of the most security issues in the cloud environment is Distributed Denial of Ser-vice(DDoS)attacks,responsible for cloud server *** proposed sys-tem ID3(Iterative Dichotomiser 3)Maximum Multifactor Dimensionality Posteriori Method(ID3-MMDP)is used to overcome the drawback and a rela-tively simple way to execute and for the detection of(DDoS)***,the pro-posed ID3-MMDP method calls for the resources of the cloud platform and then implements the attack detection technology based on information entropy to detect DDoS *** because the entropy value can show the discrete or aggregated characteristics of the current data set,it can be used for the detection of abnormal dataﬂow,User-uploaded data,ID3-MMDP system checks and read risk measurement and processing,bug ratingﬁle size changes,orﬁle name changes and changes in the format design of the data size entropy *** properties can be used whenever the program approaches any data error to detect abnormal data ***,the experiment also veriﬁes the DDoS attack detection capability algorithm.

关键词： ID3(Iterative dichotomiser 3)maximum multifactor dimensionality posterior method(ID3-MMDP) distributed denial of service(DDoS)attacks detection of abnormal dataﬂow SK measurement and processing bug ratingﬁle size

High Prevalent Hypovitaminosis D Is Associated with Dysregulation of Calcium-parathyroid Hormone-vitamin D Axis in Patients with Chronic Liver Diseases

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Journal of Clinical and Translational Hepatology 2019年第1期7卷 15-20页

作者： Krishnasamy Narayanasamy Rajendran karthick A.Koodal Raj Department of Hepatology Madras Medical CollegeChennaiTamil NaduIndia Multidisciplinary Research Unit(MRU) Madras Medical CollegeChennaiTamil NaduIndia

background and Aims:Although hypovitaminosis D is common among patients with chronic liver disease(CLD),the data are inconsistent on its prevalence and its relationship with *** study aimed to estimate the prevalence of hypovitaminosis D among patients with CLD and to determine the relationship between hypovitaminosis D and severity of liver dysfunction,and calcium(Ca),phosphate(PO4)and parathyroid hormone(PTH)levels in ***:The study included 236 CLD patients attending the Department of Hepatology,Rajiv Gandhi Government General Hospital(Chennai,India).Serum levels of 25-hydroxyvitamin D(25(OH)D),PTH,Ca,and PO4 were *** of liver dysfunction was graded using the Child-Turcotte-Pugh(CTP)***:The first report from our population showed that 162 of 236(68.6%)CLD patients had hypovitaminosis D(25(OH)D levels ofb,C *** negative correlation(r=-0.288,p=0.0001)between 25(OH)D and CTP scores was noted in hypovitaminosis D *** of 25(OH)D was correlated negatively with PTH(r=-0.537,p=0.0001),positively with Ca(r=0.657,p=0.0001),and positively with PO4(r=0.477,p=0.0001)in sufficient vitamin D ***:Hypovitaminosis D is associated with higher CTP scores and is strongly associated with dysregulation of the Ca-PTH-vitamin D axis in *** measurement of vitamin D levels is essential,along with levels of PTH,Ca and PO4,to manage CLD patients.

关键词： Hypovitaminosis D Chronic liver disease Liver dysfunction Hypocalcemia Vitamin D

Effect of thermal cycle on Ni-Cr based nanostructured thermal spray coating in boiler tubes

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Transactions of Nonferrous Metals Society of China 2015年第5期25卷 1533-1542页

作者： V.SENTHILKUMAR b.THIYAGARAJAN M.DURAISELVAM K.karthick Department of Production Engineering National Institute of Technology bharat Heavy Electricals Limited

Ni-Cr based nanostructured feedstock powder was prepared by mechanical milling technique involving repeated welding, fracturing, and re-welding of powder particles in a planetary ball mill. The milled nanocrystalline powders were used to coat carbon steel tubes using high velocity oxygen fuel（HVOF） thermal spraying process. The characterization of the feedstock powder and HVOF coated substrates was performed using optical microscope, X-ray diffractometer（XRD）, scanning electron microscope（SEM）, high resolution transmission electron microscope（HR-TEM）, energy dispersive spectrometer（EDS） and microhardness tests. The coated and uncoated samples were subjected to different thermal cycles and characterized for their phase changes, metallurgical changes and microhardness variations. Ni-Cr nanostructured coated samples exhibited higher mechanical and metallurgical properties compared to their conventionally coated counter parts. The results showed that the nanostructured coating possessed a more uniform and denser microstructure than the conventional coating.

关键词： nanostructure coating feedstock powder thermal spray boiler tubes high velocity oxygen fuel

Effective and Efficient Video Compression by the Deep Learning Techniques

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Computer Systems Science & Engineering 2023年第5期45卷 1047-1061页

作者： karthick Panneerselvam K.Mahesh V.L.Helen Josephine A.Ranjith Kumar Department of Computer Applications Alagappa UniversityKaraikudiIndia Department of Computer Science and Engineering lovely professional UniversityPhagwaraPunjabIndia School of business and Management Christ UniversityBengaluruKarnatakaIndia

Deep learning has reached many successes in Video *** has become a growing important part of our daily digital *** advancement of better resolution content and the large volume offers serious challenges to the goal of receiving,distributing,compressing and revealing highquality video *** this paper we propose a novel Effective and Efficient video compression by the Deep Learning framework based on the flask,which creatively combines the Deep Learning Techniques on Convolutional Neural Networks(CNN)and Generative Adversarial Networks(GAN).The video compression method involves the layers are divided into different groups for data processing,using CNN to remove the duplicate frames,repeating the single image instead of the duplicate images by recognizing and detecting minute changes using GAN and recorded with Long Short-Term Memory(LSTM).Instead of the complete image,the small changes generated using GAN are substituted,which helps with frame-level *** wise comparison is performed using K-nearest Neighbours(KNN)over the frame,clustered with K-means and Singular Value Decomposition(SVD)is applied for every frame in the video for all three colour channels[Red,Green,blue]to decrease the dimension of the utility matrix[R,G,b]by extracting its latent *** frames are packed with parameters with the aid of a codec and converted to video format and the results are compared with the original *** experiments on several videos with different sizes,duration,Frames per second(FPS),and quality results demonstrated a significant resampling *** normal,the outcome delivered had around a 10%deviation in quality and over half in size when contrasted,and the original video.

关键词： Convolutional neural networks(CNN) generative adversarial network(GAN) singular value decomposition(SVD) K-nearest neighbours(KNN) stochastic gradient descent(SGD) long short-term memory(LSTM)

Antibacterial and anticancerous biocompatible silver nanoparticles synthesised from the cold-tolerant strain of Spirulina platensis

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Journal of Coastal Life Medicine 2015年第4期 265-272页

作者： Selvaraj karthick Raja Namasivayam Duraisamy Jayakumar Ramesh Kumar Rajan Sowri Arvind bharani Department of biotechnology Sathyabama UniversityChennaiTamil NaduIndia

Objective:To synthesize silver nanoparticles from the biomass of cold tolerant strain of Spirulina platensis and evalute the synthesized nanoparticles against antibacterial and anticancer ***:Silver nanoparticles were synthesized by the algal culture and characterized by UV-vis spectroscopy,Fourier transform infrared spectroscopy,field emission scanning electron microscopy and X ray diffraction *** activity has been studied with free nanoparticles adopting agar diffusion assay,biofilm inhibition assay and nanoparticles fabricated wound dressing against representative Gram-negative organism Pseudomonas aeruginosa and Gram-positive organism Staphylococcus aureus *** in vitro anticancer activity of silver nanoparticles were screened against human Hep2 cell lines by means of MTT ***:Reduction of silver ions by the algal culture was observed during 72 h of incubation and the synthesized nanoparticles were further *** study reveals both the strains were susceptible to free nanoparticles and fabricated wound dressing *** in vitro anticancer activity of silver nanoparticles were screened against human Hep 2 cell lines by means of MTT assay which reveals that cell viability has been reduced as dose dependent ***:The observed results imply that silver nanoparticles synthesized from Spirulina platensis cold tolerant strain can be used as potential antibacterial and anticancerous agent.

关键词： Spirulina platensis Silver nanoparticles Antibacterial Anticancerous

Knowledge and attitude on childhood cancer survivorship among healthcare trainees:a multicentre study from India

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Family Medicine and Community Health 2024年第S2期12卷 34-43页

作者： Amritesh Grewal bhavik bansal Chetanya Mittal Hardik Gupta Archana Sasi Prasanth Ganesan Aashima Dabas Puneet Sahi Lakshmi Ramamoorthy Hmar Thiak Lalthanthuami Jaikumar Ramamoorthy Arwachi Sindhu Suyash Arora Anumeha bhukya Muthumani Hepzibah Kanchana Devi karthick Krishnamurthy Sanjeet K Rai Nikhil Mehta Komal Antil Sameer bakhshi Shuvadeep Ganguly Medical Student All India Institute of Medical SciencesNew DelhiDelhiIndia Department of Medical Oncology Dr.B.R.A.Institute Rotary Cancer HospitalAll India Institute of Medical SciencesNew DelhiDelhiIndia Department of Medical Oncology Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherryPuducherryIndia Department of Pediatrics Lok Nayak HospitalNew DelhiDelhiIndia Department of Pediatrics Maulana Azad Medical CollegeNew DelhiDelhiIndia College of Nursing Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherryPuducherryIndia Department of Pediatrics Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherryPuducherryIndia Medical Student Maulana Azad Medical CollegeNew DelhiDelhiIndia Department of Surgical Disciplines All India Institute of Medical SciencesNew DelhiDelhiIndia Department of Dermatology and Venereology All India Institute of Medical SciencesNew DelhiDelhiIndia College of Nursing All India Institute of Medical SciencesNew DelhiDelhiIndia

background The proportion of childhood cancer survivors(CCS)in low/middle-income countries(LMICs)is *** often develop several physical and psycho-social long-term adverse effects,with unique healthcare *** healthcare providers(primary care physicians(PCPs)),especially in LMICs,are often not equipped to handle survivorship *** study aimed to assess knowledge,and attitude among trainee healthcare providers concerning major issues of paediatric survivorship *** A multi-centre,cross-sectional,questionnaire-based study was conducted among nursing and medical undergraduate students,and postgraduate medical residents across three tertiary-care teaching hospitals in India—All India Institute of Medical Sciences,New Delhi;Jawaharlal Institute of Postgraduate Medical Education and Research,Puducherry;and Maulana Azad Medical College,New Delhi.A questionnaire with total of 24 questions(14 knowledge-based and 10 attitude-based)was finalised after validation by expert review and *** major domains covered in the questionnaire included knowledge and attitude regarding long-term adverse effects and psychosocial,employment-related issues faced by the *** was administered to the study participants *** knowledge-based questions had true/false responses(scored as 0 or 1 if incorrect or correct,respectively).Attitude-based questions were scored as 5-point Likert *** Total 898 responses were collected(median age:21 years,64%(576/898)female).Among the respondents,44%were undergraduate medical students,42%were nursing students and 14%were postgraduate medical *** mean(SD)of knowledge score was 8.72(2.04)(out of 14).On multivariable analysis,only discipline of training predicted knowledge scores regarding survivorship *** medical residents(9.08)as well as undergraduate medical students(8.85),had significantly higher mean knowledge scores than nursing students(8.47)(p=0.004).Two questions were

关键词： centre handle false