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Impact of infectious density-induced additional screening and treatment saturation on COVID-19:Modeling and cost-effective optimal control

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Infectious Disease Modelling 2024年第2期9卷 569-600页

作者： Sonu lamba Tanuja Das Prashant K.Srivastava Department of Mathematics Indian Institute of Technology Patna Bihta–801106PatnaBiharIndia Department of Mathematics and Statistics University of New Brunswick FrederictonNBE3B 5A3Canada

This study introduces a novel SI2HR model,where“I2”denotes two infectious classes representing asymptomatic and symptomatic infections,aiming to investigate and analyze the cost-effective optimal control measures for managing *** model incorporates a novel concept of infectious density-induced additional screening(IDIAS)and accounts for treatment ***,the model considers the possibility of reinfection and the loss of immunity in individuals who have previously *** validate and calibrate the proposed model,real data from November–December 2022 in Hong Kong are *** estimated parameters obtained from this calibration process are valuable for prediction purposes and facilitate further numerical *** analysis of the model reveals that delays in screening,treatment,and quarantine contribute to an increase in the basic reproduction number R0,indicating a tendency towards *** particular,from the elasticity of R0,we deduce that normalized sensitivity indices of baseline screening rate(θ),quarantine rates(γ,αs),and treatment rate(α)are negative,which shows that delaying any of these may cause huge surge in R0,ultimately increases the disease ***,by the contour plots,we note the two-parameter behavior of the infectives(both symptomatic and asymptomatic).Expanding upon the model analysis,an optimal control problem(OCP)is formulated,incorporating three control measures:precautionary interventions,boosted IDIAS,and boosted *** Pontryagin's maximum principle and the forward-backward sweep method are employed to solve the *** numerical simulations highlight that enhanced screening and treatment,coupled with preventive interventions,can effectively contribute to sustainable disease ***,the cost-effectiveness analysis(CEA)conducted in this study suggests that boosting IDIAS alone is the most economically efficient and cost-effective approach compared to other *** CEA resul

关键词： COVID-19 IDIAS Estimation Prediction Optimal control Cost-effectiveness analysis

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索马里兰大力推动税收工作

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人类居住 2009年第4期 26-28页

作者： antony lamba Asia Adam Edward Miller 王胜联合国人居署

1991年,索马里兰宣布从索马里独立,迎来了一个比前英国保护国时期相对稳定的时代,使西北地区与战争蹂躏的中南部地区之间有了距离。不管怎样,这是一个哈尔格萨真正发展的新世纪,antony lamba、Asia Adam和Edward Miller这样写道。在本文... 详细信息

1991年,索马里兰宣布从索马里独立,迎来了一个比前英国保护国时期相对稳定的时代,使西北地区与战争蹂躏的中南部地区之间有了距离。不管怎样,这是一个哈尔格萨真正发展的新世纪,antony lamba、Asia Adam和Edward Miller这样写道。在本文中,他们阐述了一种利用地理信息系统卫星技术的新征税系统是怎样增加公共资产、进行急需的城市改善的。

关键词：马里地理信息系统税收中南部地区相对稳定西北地区 Adam 卫星技术

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Biodiesel from Palm Vegetable Oil

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Natural Resources 2024年第2期15卷 51-60页

作者： Bhawna Yadav lamba Sapna Jain Shreya Jha Applied Science Cluster School of Engineering UPES Dehradun India Winchester High School Massachusetts USA

Energy obtained from a variety of non-renewable sources is considered unsustainable. Various fossil fuels, such as petroleum, coal, and natural gas, are among these sources. The combustion of fossil fuels resulted in the generation of greenhouse gases, which increased the amount of carbon dioxide in the atmosphere. Global warming and ozone layer degradation are the negative consequences. In a country like India, where consumable oils are still imported, it is sense to look at the possibility of using such unpalatable oils in CI engines that aren’t often utilized as cooking oil. Palm oil is a vegetable oil obtained from the monocarp of the oil palm’s crop. The main goal is to provide a low-cost, high-performance alternative to diesel. The possibility of palm oil as a realistic, modest, and effective hotspot for the generation of biodiesel is investigated in this research. The article is focused on the comparison of palm oil and diesel in terms of characteristics.

关键词： Biodiesel Transesterification Palm Oil Heterogeneous Catalyst Methyl Esters Sustainable Fuel Energy

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Antimicrobial ability and growth promoting effects of feed supplemented with probiotic bacterium isolated from gut microflora of Cirrhinus mrigala

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Journal of Integrative Agriculture 2015年第3期14卷 583-592页

作者： Anita Bhatnagar Ritu lamba Department of Zoology Kurukshetra University

The present studies were conducted to isolate, select, identify and characterize gut bacteria as antimicrobial and growth promoting agent for the feed of economically important fish Cirrhinus mrigala. Intestinal microflora were isolated, counted, and identified, and their in vitro antibacterial properties were determined. The results have revealed that occurrence of Gram-negative rods was around 75% and of Gram-positive rods was 25%. Among the isolates Gram-positive were maintained in nutrient agar slants at 4℃. Of these, eight strains were replica-plated on agar seeded with Aeromonas hydrophila and only one strain CM2（C. mrigala 2） exhibited antibacterial properties in vitro showing inhibition against fish pathogen by well diffusion assay. This isolated strain was identified as Bacillus cereus. This bacterium was mass cultured and incorporated in the pelleted diet（40% protein and 18 k J g^–1 gross energy） of C. mrigala to investigate its effect on growth performance, digestibility, nutrient retention and activities of digestive enzymes. The results of feeding trial revealed significantly（P〈0.05） high growth performance in terms of specific growth rate, growth percent gain in body weight（BD）（272.4±1.5）%, high apparent protein digestibility（（79.9±0.30）%） and low food conversion ratio in the group of fishes fed on diet containing B. cereus in comparison to the fishes fed on diet without probiotics. The carcass composition also revealed high accumulation of proteins（（15.28±0.15） g 100 g^–1） in fishes fed on diet containing probiotics. Intestinal enzyme activities of protease, amylase and cellulase were also significantly（P〈0.05） high in the group of fishes fed on diet supplemented with probiotics indicating the extracellular enzyme production by B. cereus. These results indicate that probiotics stimulate the digestion through the supply of digestive enzyme and certain essential nutrients to animals. Also significantly（P〈0.05） low excretion of metabolites, i.e., ammonia

关键词： Aeromonas Bacillus cereus digestive enzymes growth performance Cirrhinus mrigala probiotics

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Integral Transform Methods for Inverse Problem of Heat Conduction with Known Boundary of a Thin Rectangular Object and its Stresses

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Journal of Thermal Science 2012年第5期21卷 459-465页

作者： Navneet K. lamba N. W. Khobragade Department of Mathematics MJP Educational Campus RTM Nagpur UniversityNagpur 440 033 India

The three-dimensional inverse transient thermoelastic problem for a thin rectangular object is considered within the context of the theory of generalized thermoelasticity. The upper surface of the rectangular object occupying the space D： -a〈xSa; -b〈_y〈b; 0〈z〈h; with the known boundary conditions. Laplace and Finite Marchi-Fasulo transform techniques are used to determine the unknown temperature, temperature distribution, displacement and thermal stresses on upper plane surface of a thin rectangular object. The distributions of the considered physical variables are obtained and represented graphically.

关键词： Thin rectangular plate three dimensional inverse transient thermoelastic problem Marchi- Fasulo transform and Laplace transform.

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Visibility improvement and mass segmentation of mammogram images using quantile separated histogram equalisation with local contrast enhancement

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CAAI Transactions on Intelligence Technology 2019年第2期4卷 73-79页

作者： Bhupendra Gupta Mayank Tiwari Subir Singh lamba PDPM Indian Institute of Information Technology Design & Manufacturing Jabalpur MP 482005 India

In this work, the authors develop a working software-based approach named ‘linearly quantile separated histogram equalisation-grey relational analysis’ for mammogram image (MI). This approach improves overall contrast (local and global) of given MI and segments breast-region with a specific end goal to acquire better visual elucidation, examination, and grouping of mammogram masses to help radiologists in settling on more precise choices. The fundamental commitment of this work is to demonstrate that results of good quality of breast-region segmentation can be accomplished from basic breast-region segmentation if the input image has good contrast and a better interpretation of hidden details. They have evaluated the proposed strategy for MIAS-MIs. Experimental results have shown that the proposed approach works better than state-of-the-art.

关键词： develop contrast approach

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Modelling of strain induced magnetic anisotropy in Au additive FePt thin films

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Progress in Natural Science:Materials International 2019年第5期29卷 517-524页

作者： Rajan Goyal S.lamba S.Annapoorni Department of Physics and Astrophysics University of Delhi School of Sciences Indira Gandhi National Open University

L10ordering at low temperature and controlled grain size are prerequisites for the fabrication of magnetic recording media. This can be achieved by several methods such as addition, under layer or over layer of third element in FePt. In the present work, the kinetics of L10 ordering in the presence of immiscible element Au is investigated by varying the Au concentration at different annealing temperatures. The structural analysis shows that the Au additive not only promotes the ordering at low temperature but also supports the textured growth along(001) plane. The magnetic measurements supported by theoretical simulations using Monte Carlo predicts that the enhancement in coercivity attributed to induced strain anisotropy and weakening of inter-granular exchange coupling may be due to presence of Au at grain boundaries.

关键词： Anisotropy Monte Carlo FePt

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Epidemiology of ocular surface squamous neoplasia in veterans: a retrospective casecontrol study

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Eye and Vision 2019年第1期6卷 99-104页

作者： Logan M.Smith Shiv lamba Carol L.Karp Anat Galor Miami Veterans Administration Medical Center 1201 NW 16th StMiamiFL 33125USA Bascom Palmer Eye Institute Department of OphthalmologyUniversity of Miami900 NW 17th StreetMiamiFL 33136USA Flint Hill School OaktonVirginiaUSA

Background:A number of risk factors have been evaluated in ocular surface squamous neoplasia,but few studies have assessed risk factors specific to the armed forces veteran ***:We conducted a retrospective case-control study on 55 patients and 55 age-matched controls with biopsy-proven ocular surface squamous neoplasia from the Miami Veterans Administration Hospital Eye Clinic to investigate potential risk factors encountered by veterans,including service-specific ***-specific risk factors included ionizing radiation exposure,Agent Orange exposure,deployment to Southwest Asia,and exposure to the series of biochemical warfare tests known as Project Shipboard Hazard and *** was analyzed with SPSS(SPSS Inc.,Chicago,IL)using t-tests,chi-squared,and logistic regression analysis,with a p-value of<0.05 considered statistically ***:The strongest risk factor for ocular surface squamous neoplasia was lifetime sun exposure both directly assessed via historical quantification of exposure by dermatology practitioners(Odds Ratio(OR)5.4,95%Confidence Interval(CI)2.27–12.847,p<0.005),and using the surrogate markers of basal cell carcinoma(OR 3.157,95%CI 1.286–7.748,p=0.010)and pingueculae(OR 5.267,95%CI 2.104–13.186,p<0.005).Of the veteran-specific risk factors,Agent Orange exposure and Southwest Asia deployment were not associated with an increased risk of ocular surface squamous *** to ionizing radiation and involvement in Project Shipboard Hazard and Defense were not documented among any cases or ***:The results of our study are consistent with prior established risk factors,namely highlighting the important role of sun exposure in ocular surface squamous neoplasia among veterans.

关键词： Ocular surface squamous neoplasia Risk factors Veteran population

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No Conflict: the Bottom Line of the Indo-Pacific Strategy

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Peace 2018年第3期 42-42,24页

作者： lamba Arvinder Institute of Peace and Conflict Studies Retired Lieutenant General

The Indo-Pacific region has become the centre of 21st-century geopolitics,wherein the regional and external powers are actively competing and collaborating with one another to counter and expand their own and others’... 详细信息

关键词： Strategy Evolution countries

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The mediating role of sleep qualityon the relationship between internet gaming disorder and perceived stress and suicidal behaviour among Indian medical students

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General Psychiatry 2023年第3期36卷 175-188页

作者： Sunny Garg Aakanksha Kharb Deepika Verma Ritu Antil Binika Khanna Ritika Sihag Divya lamba Psychiatry Bhagat Phool Singh Government Medical College for WomenKhanpur KalanSonipatHaryanaIndia MBBS Internship Bhagat Phool Singh Government Medical College for WomenKhanpur KalanSonipatHaryanaIndia MBBS Student Final Prof Bhagat Phool Singh Government Medical CollegeforWomenKhanpur KalanSonipatHaryanaIndia

Background In the recent digital era,individuals with internet gaming disorder(IGD)have reported a much higher prevalence of poor sleep quality,perceived stress and suicidal ***,the underlying mechanisms for these psychological problems remain *** The primary aims of this study were to explore the mediating role of sleep quality on the relationship between IGD and the health outcomes of perceived stress and suicidal behaviour and to assess the prevalence and risk factors for IGD among medical *** A cross-sectional study enrolling 795 medical students from two medical colleges in a rural area of North India was conducted from April to May *** study participants were chosen using a stratified random sampling approach.A self-administered questionnaire was used to collect data,including sociodemographic and personal information and gaming *** study also included the Gaming Disorder and Hazardous Gaming Scale,the Pittsburgh Sleep Quality Index,the Perceived Stress Scale-10 and the Suicide Behaviors Questionnaire-Revised to measure IGD,sleep quality,perceived stress and suicidal behaviour,*** logistic regression for the risk factors and Pearson's correlation test for the relationship between variables were ***'PROCESS macro for SPSS was employed to carry out mediation *** Among the 348 gamers with a mean age of 21.03(SD 3.27)years,the prevalence of IGD was 15.23%(95%confidence interval:11.6%to 19.4%).In the correlational analysis,small to large(r:0.32-0.72)significant relationships between scores of IGD and other health outcomes were *** indirect effect(B=0.300)via sleep quality accounted for 30.55%of the total effect(B=0.982)of IGD on perceived stress(partially mediated),while sleep quality(B=0.174)accounted for 27.93%of the total effect(B=0.623)of IGD on suicidal behaviour(partially mediated).The factors of being male,living in a single-parent family,using the inte

关键词： behaviour internet media

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