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A Detailed Mathematical Analysis of the Vaccination Model for COVID-19

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Computer Modeling in Engineering & sciences 2023年第5期135卷 1315-1343页

作者： Abeer s.Alnahdi mdi B.Jeelani Hanan A.Wahash Mansour A.Abdulwasaa Department of Mathematics and statistics Imam Mohammad Ibn Saud Islamic University(IMSIU)RiyadhSaudi Arabia Department of Mathematics Dr.Babasaheb Ambedkar Marathwada UniversityAurangabadIndia Department of statistics Taiz UniversityTaizYemen Department of statistics Dr.Babasaheb Ambedkar Marathwada UniversityAurangabadIndia

This study aims to structure and evaluate a newCOVID-19modelwhich predicts vaccination effect in theKingdom of saudi Arabia(KsA)under Atangana-Baleanu-Caputo(ABC)fractional *** the statistical aspect,we analyze the collected statistical data of fully vaccinated people from June 01,2021,to February 15,*** we apply the Eviews program to find the best model for predicting the vaccination against this pandemic,based on daily series data from February 16,2022,to April 15,*** results of data analysis show that the appropriate model is autoregressive integratedmoving average ARIMA(1,1,2),and hence,a forecast about the evolution of the COVID-19 vaccination in 60 days is *** theoretical aspect provides equilibrium points,reproduction number R0,and biologically feasible region of the proposed ***,we obtain the existence and uniqueness results by using the Picard-Lindel method and the iterative scheme with the Laplace *** the numerical aspect,we apply the generalized scheme of the Adams-Bashforth technique in order to simulate the fractional ***,numerical simulations are performed dependent on real data of COVID-19 in KsA to show the plots of the effects of the fractional-order operator with the anticipation that the suggested model approximation will be better than that of the established traditional ***,the concerned numerical simulations are compared with the exact real available date given in the statistical aspect.

关键词： COVID-19 Eviews program forecasting ABC fractional derivative Picard-Lindel method Adams-Bashforth technique

Numerical Computational Heuristic Through Morlet Wavelet Neural Network for solving the Dynamics of Nonlinear sITR COVID-19

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Computer Modeling in Engineering & sciences 2022年第5期131卷 763-785页

作者： Zulqurnain sabir Abeer s.Alnahdi mdi Begum Jeelani Mohamed A.Abdelkawy Muhammad Asif Zahoor Raja Dumitru Baleanu Muhammad Mubashar Hussain Department of Mathematics Hazara UniversityMansehraPakistan Department of Mathematics and statistics Faculty of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)RiyadhSaudi Arabia Department of Mathematics Faculty of ScienceBeni-Suef UniversityBeni-SuefEgypt Future Technology Research Center National Yunlin University of Science and TechnologyYunlinTaiwan Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of space sciences Magurele-BucharestRomania Department of Mathematics University of PunjabJhelum CampusJhelumPakistan

The present investigations are associated with designing Morlet wavelet neural network(MWNN)for solving a class of susceptible,infected,treatment and recovered(sITR)fractal systems of COVID-19 propagation and *** structure of an error function is accessible using the sITR differential form and its initial *** optimization is performed using the MWNN together with the global as well as local search heuristics of genetic algorithm(GA)and active-set algorithm(AsA),i.e.,*** detail of each class of the sITR nonlinear COVID-19 system is also *** obtained outcomes of the sITR system are compared with the Runge-Kutta results to check the perfection of the designed *** statistical analysis is performed using different measures for 30 independent runs as well as 15 variables to authenticate the consistency of the proposed *** plots of the absolute error,convergence analysis,histogram,performancemeasures,and boxplots are also provided to find the exactness,dependability and stability of the MWNN-GA-AsA.

关键词： Nonlinear sITR model morlet function artificial neural networks Runge-Kutta treatment genetic algorithm treatment active-set

澳大利亚中部阿尔唐金矿区构造对含金石英脉分布的控制

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国外地质与勘测 1992年第1期 15-17,23页

作者： mdi.,PHG

物理特效科幻电影的硬核——探访《流浪地球》幕后的工业设计小分队

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设计 2019年第6期32卷 31-50页

作者：李杰李叶 mdi工作室(图) mdi工作室

今年春节档上映的硬核科幻电影《流浪地球》成为今年第一部爆款国产影片。据统计,《流浪地球》上映34天时的票房已累计达46亿,一举把2019年奠定成为“中国科幻元年”。谈科幻电影必然绕不开特效,电影中呈现出的逼真特效技术引发了观众... 详细信息

今年春节档上映的硬核科幻电影《流浪地球》成为今年第一部爆款国产影片。据统计,《流浪地球》上映34天时的票房已累计达46亿,一举把2019年奠定成为“中国科幻元年”。谈科幻电影必然绕不开特效,电影中呈现出的逼真特效技术引发了观众的热议,而这些令人震撼的特效基本都是出自国内团队之手。但影迷第一时间想到的往往是电脑特效,在此前的舆论场中,关于《流浪地球》中特效的评价,也多以电脑特效为主,也就是CG,很少有人提到片中的物理特效(也叫“实体特效”)的部分,而实际上,那些被统称为“道具”的“物理特效”正是后期电脑特效的基础,物理特效道具越真实,后期效果才更能给观众代入感。本期特别策划中,我们专访到几乎承包了《流浪地球》物理特效制作的mdi工作室的主创成员。《流浪地球》片中出现的宇航服、外骨骼服装、枪械、点火石、休眠舱、气囊球等都出自mdi设计师和工程师之手。这群一直埋头苦干的青年设计师们不仅实战技术过硬,更令人惊喜的是,接触过国外电影及特效制作环境的他们,不仅拥有比前辈们更广阔的的视野、更高层次的认知,对中国电影工业化也有着自己的思考。面对未来,他们有着乐观而审慎的规划,预备脚踏实地地通过工业设计将中国电影工业化的进程不断推进。

关键词：科幻电影工业设计地球物理硬核电脑特效特效制作制作环境

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由封闭芳族二异氰酸酯制备聚氨酯分散体的最新进展

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涂料与应用 2004年第3期34卷 29-35页

作者： s．subramani 李美兰南韩Yonsei大学化学工程系微珠工艺技术实验室天津灯塔涂料有限公司300400

水分散／水稀释封闭异氰酸酯的制备使在共反应物的水性分散体中加入封闭异氰酸酯更为简便。接入离子侧基可制备阴离子改性甲乙酮肟(MEKO)，￡-己内酰胺(CL)和3．5．二甲基吡唑(DMP)封闭的芳族二异氰酸酯(甲苯2，4．二异氰酸酯TDI和4，4... 详细信息

水分散／水稀释封闭异氰酸酯的制备使在共反应物的水性分散体中加入封闭异氰酸酯更为简便。接入离子侧基可制备阴离子改性甲乙酮肟(MEKO)，￡-己内酰胺(CL)和3．5．二甲基吡唑(DMP)封闭的芳族二异氰酸酯(甲苯2，4．二异氰酸酯TDI和4，4’一二苯基甲烷二异氰酸酯mdi)分散的异氰酸醣加成物，并用FT-IR，胶凝色谱仪(GPC)，差示扫描量热计(DsC)和热一重量定量分析仪(TGA)技术对其进行评价。发现如I基聚异氰酸酯的分子量比较高。热研究表明异氰酸酯加成物的脱封温度按以下次序逐步降低?￡一己内酰胺>甲乙酮肟>3．5．二甲基吡唑。用带有羟基官能基的水性聚氨酯分散体异氰酸酯加成物做胶凝试验。还发现封闭加成物分散体显示稳定，能与聚氨酯(聚醚聚酯基)分散体和丙烯酸分散体相溶。

关键词：封闭芳族二异氰酸酯制备聚氨酯分散体阴离子水性分散体加成物交联剂

Association between Depression, Pressure Pain sensitivity, stress and Autonomous Nervous system Function in stable Ischemic Heart Disease: Impact of Beta-Adrenergic Receptor Blockade

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Journal of Behavioral and Brain science 2016年第8期6卷 317-328页

作者： søren Ballegaard Natasha Bergmann Benny Karpatschof Jesper Kristiansen Finn Gyntelberg Lars Arendt-Nielsen Per Bech Åke Hjalmarson Jens Faber Department of Endocrinology Herlev Hospital Herlev Denmark Department of Psychology University of Copenhagen Copenhagen Denmark The National Research Centre for the Working Environment Copenhagen Denmark Center for sensory-Motor Interaction Department of Health Science and Technology Aalborg University Aalborg Denmark Psychiatric Research Unit Psychiatric Centre North Zealand University of Copenhagen Hillerod Denmark Department of Cardiology Sahlgrenska University Hospital Gothenburg Sweden Faculty of Health and Medical sciences Copenhagen University Copenhagen Denmark

Background: Depression and ischemic heart disease (IHD) are associated with persistent stress and autonomic nervous system (ANs) dysfunction. The former can be measured by pressure pain sensitivity (PPs) of the sternum, and the latter by the PPs and systolic blood pressure (sBP) response to a tilt table test (TTT). Beta-blocker treatment reduces the efferent beta-adrenergic ANs function, and thus, the physiological stress response. Objective: To test the effect of beta-blockers on changes in depression score in patients with IHD, as well as the influence on persistent stress and ANs dysfunction. Methods: Three months of non-pharmacological intervention aiming at reducing PPs and depression score in patients with stable IHD. Beta-blocker users (N = 102) were compared with non-users (N = 75), with respect to signs of depression measured by the Major Depressive Inventory questionnaire (mdi), resting PPs, and PPs and sBP response to TTT. Results: mdi score decreased 30% in non-users (p = 0.005) compared to 4% (p > 0.1) among users (between-group p = 0.003;effect size = 0.4). Resting PPs decreased in both the groups. Among most vulnerable patients with mdi ≥ 15, reductions in mdi score and resting PPs score correlated in non-users, only (r = 0.69, p = 0.007). Reduction in resting PPs correlated with an increase in PPs and sBP response to TTT. Conclusions: stress intervention in patients with IHD was anti-depressive in non-users, only. similarly, the association between the reduction in depression, reduction in persistent stress, and restoration of ANs dysfunction was only seen in non-users, suggesting a central role of beta-adrenergic receptors in the association between these factors.

关键词： Chronic stress Depression Autonomic Nervous system systolic Blood Pressure Pain sensitivity Beta-Blockers Ischemic Heart Disease

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绒膜羊膜炎对早产儿神经系统发育的影响

世界核心医学期刊文摘（儿科学分册） 2006年第4期2卷 24-25页

作者： Polam s. Koons A. Anwar M. 贺莉 Division of Neonatology St. Peter's University Hospital 254 Easton Ave New Brunswick NJ 08903 United StatesDr

Objective: To assess the association of neurodevelopmental outcome with the placental diagnosis of chorioamnionitis in very low-birth-weight infants. Methods: One hundred seventy- seven surviving very low-birth-weight infants, 22 to 29 weeks’ gestational age, born after varying severity of chorioamnionitis, were evaluated at a mean± sD age of 19± 6 months’ corrected age with Bayley scales of Infant Development II and neurologic examination. select maternal and infant variables were abstracted from the medical records. Neonatal morbidities, Mental Developmental Index (mdi) score, Psychomotor Developmental Index (PDI) score, probability of normal mdi and PDI scores (>84), and cerebral palsy between the chorioamnionitis and the control groups were assessed, controlling for gestational age, sex, and the maternal use of steroids and antibiotics. Results: The chorioamnionitis group of 102 infants was compared with 75 control infants (mean± sD birth weight, 947± 236 g and 966± 219 g, respectively; mean± sD gestational age, 26.1± 2.8 weeks and 27.1± 1.5 weeks, respectively). Infants with chorioamnionitis, compared with controls, had a significantly higher incidence of intraventricular hemorrhage (30% vs 13% ) and retinopathy of prematurity (68% vs 42% ). Cerebral palsy was diagnosed in 8.6% of the infants with chorioamnionitis and 6.6% of the controls. The mdi and PDI scores were similar between the chorioamnionitis and control groups (mean± sD mdi score, 96± 16 vs 97± 18 and mean± sD PDI score, 94± 19 vs 92± 19, respectively). Conclusions: In very low-birth-weight infants we found a higher incidence of intraventricular hemorrhage and retinopathy of prematurity but similar mdi and PDI scores and risk of cerebral palsy associated with chorioamnionitis.

关键词：羊膜炎神经系统发育绒膜新生儿发病率脑室内出血视网膜病极低出生体重儿医疗记录精神发育指

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不同软段结构的双离子型聚氨酯离聚体

高分子学报 1987年第1期 1-7页

作者：杨昌正盛以虞 s.L.Cooper 南京大学化学系南京药学院威斯康星大学化工系

本文讨论了以聚环氧乙烷(PEO)、聚环氧丙烷(PPO)以及聚丁二烯(PBD)为软段,以4,4’-二异氰酸二苯甲烷(mdi)和N,N-二羟乙基甲胺(MDEA)为硬段的链段型聚氨酯的合成。并通过MDEA中的第三胺与Υ-丙磺内酯反应,转化为双离子型离聚体。用差示... 详细信息

本文讨论了以聚环氧乙烷(PEO)、聚环氧丙烷(PPO)以及聚丁二烯(PBD)为软段,以4,4’-二异氰酸二苯甲烷(mdi)和N,N-二羟乙基甲胺(MDEA)为硬段的链段型聚氨酯的合成。并通过MDEA中的第三胺与Υ-丙磺内酯反应,转化为双离子型离聚体。用差示扫描量热、红外光谱、动态力学性能以及应力-应变等实验方法研究了化学组成和氨磺化程度对材料相分离程度,力学性能和形态结构的影响。结果表明,离子化后的材料力学性能有很大的改善。对PBD为软段的材料,离子化只能提高硬段“微区”的内聚能,而对PEO、PPO为软段的材料,还能大大提高软、硬相的相分离程度。

关键词：聚氨酯离聚体双离子型离聚体相分离

早产儿脑萎缩的超声诊断结果与神经发育结果相关

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世界核心医学期刊文摘（儿科学分册） 2006年第6期2卷 8-9页

作者： Horsch s. Muentjes C. Franz A. Roll C. 朱新菊 Universit ts-Kinderklinik Hufelandstr. 55 D-45122 Essen Germany

Abstract Abstract Background: Intraventricular haemorrhage and periventricular leukomalacia are associated with poor outcome of very preterm infants, while the role of more subtle cerebral alterations, as detected by cranial ultrasound, is less clear. Aim: In this study, we related periventricular echodensities and signs of brain atrophy to neurodevelopmental outcome at 3 y of age. Patients and methods: All preterm infants born in 1997 in our institution with a gestational age subjected to repeated standardized cranial ultrasound examinations until discharge. survivors were examined at 3 y of age employing the Bayley scales of Infant Development II. Results: Eighty-seven infants were enrolled (birthweight 430-2500 g (median 1200 g), gestational age 24-34 wk (median 29 wk)). Periventricular echodensities were detected in 42 infants (48%); in 12 cases persisting ses > 7 d. At discharge, 18 infants (22%) had signs of brain atrophy. Neurodevelopmental outcome was assessed in 64 infants. Infants with signs of brain atrophy scored significantly lower on mdi (atrophy 91.8, no atrophy 101.9; P = 0.02), PDI (atrophy 91.4, no atrophy 106.5; P = 0.001) and Behaviour Rating scale (atrophy 41.1, no atrophy 66.4; P = 0.01) than infants without atrophy. Periventricular echodensities were not related to outcome. Conclusion: Our data show that infants with sonographic signs of brain atrophy at discharge achieve lower scores in neurodevelopmental testing at 3 y.

关键词：超声检查神经发育脑萎缩早产儿诊断结果脑室周围白质软化行为评定量表脑室内出血预后不良微小病变

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