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傅里叶谱和反应谱之间的关系及其对经验地震动预测方程(GMPE)调整的影响研究(Ⅰ)

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国际地震动态 2017年第3期38卷 25-32页

作者： sanjay singh bora Frank Scherbaum Nicolas Kuehn Peter Stafford

经验反应谱地震动预测方程(GMPEs)的函数形式通常由地震动傅里叶谱模拟的概念导出,随后这些GMPEs由经验观测数据校准,所以,对特定地震场景的地震动预测不会构成重大问题。然而,当调整反应谱GMPEs来计算未被原始经验数据集覆盖的条件时,... 详细信息

经验反应谱地震动预测方程(GMPEs)的函数形式通常由地震动傅里叶谱模拟的概念导出,随后这些GMPEs由经验观测数据校准,所以,对特定地震场景的地震动预测不会构成重大问题。然而,当调整反应谱GMPEs来计算未被原始经验数据集覆盖的条件时,傅里叶谱模拟导出反应谱的假设可能会产生意想不到的结果。因此,几个问题出现了。例如,地震动傅里叶谱和反应谱的区别和相似之处是什么?如果它们是不同的,什么机制可以解释这样的差异?对傅里叶振幅谱(FAS)所做的调整在反应谱中怎么表示?本文利用随机振动理论(RVT)探讨了地震动傅里叶谱和反应谱之间的关系。借助简单的Brune震源模型^([1-2]),在固定震级和距离的情况下,用RVT生成了加速度谱。RVT分析表明,反应谱低频谱值标定可以视为与相应傅里叶谱标度值等同。然而,反应谱高频谱值受到了带宽很大的傅里叶谱的控制。实际上,地震动峰值加速度不能反映高频地震动特征,它受到了整个地震动傅里叶谱的控制。此外,本文说明了对FAS做的调整如何相似或区别于对反应谱坐标所做的相同的调整。为此,我们研究了调整应力参数(Δσ)(震源项)和调整反应场地响应的属性(V_S-κ_0)这两种情况。

关键词：反应谱 GMPE 地震动谱模随机振动理论振幅谱标度值速度谱峰值加速度调整反应

傅里叶谱和反应谱之间的关系及其对经验地震动预测方程(GMPE)调整的影响研究(Ⅱ)

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国际地震动态 2017年第4期38卷 30-41页

作者： sanjay singh bora Frank Scherbaum Nicolas Kuehn Peter Stafford 杨国栋石玉成

借助图6和图7,我们总结一下在不同振荡频率范围内FAS与反应谱之间的关系。在图6和图7中,我们模拟了RJB=20km及MW=6的地震,随机模型参数与图1的相同。图6描述了m0核｜YSDOF（f,fosc）｜2的不同部分在所选振荡频率fosc的m01/2（fosc）计... 详细信息

借助图6和图7,我们总结一下在不同振荡频率范围内FAS与反应谱之间的关系。在图6和图7中,我们模拟了RJB=20km及MW=6的地震,随机模型参数与图1的相同。图6描述了m0核｜YSDOF（f,fosc）｜2的不同部分在所选振荡频率fosc的m01/2（fosc）计算中的影响。从图3可看出,

关键词：地震动反应谱预测方程傅里叶谱调整振荡频率频率范围模型参数

Current evidence on artificial intelligence in regional anesthesia

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World Journal of Clinical Cases 2024年第33期12卷 6613-6619页

作者： Bhanu Pratap Swain Deb sanjay Nag Rishi Anand Himanshu Kumar Pradip Kumar Ganguly Niharika singh Department of Anaesthesiology Tata Main HospitalJamshedpur 831001India Department of Anesthesiology Manipal Tata Medical CollegeJamshedpur 831017India

The recent advancement in regional anesthesia(RA)has been largely attributed to ultrasound ***,the safety and efficiency of ultrasound-guided nerve blocks depend upon the skill and experience of the *** with adequate training,experience,and knowledge,human-related limitations such as fatigue,failure to recognize the correct anatomical structure,and unintentional needle or probe movement can hinder the overall effectiveness of *** amalgamation of artificial intelligence(AI)to RA practice has promised to override these human *** learning,an integral part of AI can improve its performance through continuous learning and experience,like the human *** enables computers to recognize images and patterns specifically useful in anatomic structure identification during the performance of *** can provide real-time guidance to clinicians by highlighting important anatomical structures on ultrasound images,and it can also assist in needle tracking and accurate deposition of local *** future of RA with AI integration appears promising,yet obstacles such as device malfunction,data privacy,regulatory barriers,and cost concerns can deter its clinical *** current mini review deliberates the current application,future direction,and barrier to the application of AI in RA practice.

关键词： Artificial intelligence Regional anesthesia Machine learning Ultrasonography Nerve block

In-hospital outcomes in COVID-19 patients with non-alcoholic fatty liver disease by severity of obesity:Insights from national inpatient sample 2020

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World Journal of Hepatology 2024年第6期16卷 912-919页

作者： Sashwath Srikanth Vibhor Garg Lakshmi Subramanian Jyoti Verma Hansika Sharma Harroop singh Klair Shrenil A Kavathia Jithin Kolli Teja Nikhil Sai Vasireddy Kumar Anmol Dhanush Kolli Shruti sanjay Bodhankar Sobya Hashmi Shaylika Chauhan Rupak Desai Department of Medicine ECU Health Medical CenterGreenvilleNC 27834United States Department of Medicine Jacobi Medical Center/Albert Einstein College of MedicineBronxNY 10461United States Department of Medicine North Alabama Medical CentreFlorenceAL 35630United States Department of General Medicine Gandhi Medical CollegeSecunderabad 500003TelanganaIndia Department of Medicine Government Medical CollegePatiala 147001PunjabIndia Department of Medicine B.J.Medical CollegeAhmedabad 380016GujaratIndia Department of Medicine JSS Medical CollegeMysore 570015KarnatakaIndia Department of Internal Medicine Gandhi Medical CollegeSecunderabad 500003TelanganaIndia Department of Medicine Kasturba Medical CollegeManipal 575001KarnatakaIndia Clinical Extern Department of Internal MedicineBeaumont HospitalDearbornMI 48124United States Department of Internal Medicine Geisinger Health SystemWilkes-BarrePA 18702United States Independent Researcher AtlantaGA 30079United States

BACKGROUND Non-alcoholic fatty liver disease(NAFLD)increases the risk of cardiovascular diseases independently of other risk ***,data on its effect on cardiovascular outcomes in coronavirus disease 2019(COVID-19)hospitalizations with varied obesity levels is *** management and patient care depend on understanding COVID-19 admission results in NAFLD patients with varying obesity *** To study the in-hospital outcomes in COVID-19 patients with NAFLD by severity of *** COVID-19 hospitalizations with NAFLD were identified using International Classification of Disease-10 CM codes in the 2020 National Inpatient Sample *** and Obesity Classes Ⅰ,Ⅱ,and Ⅲ(body mass index 30-40)were *** adverse cardiac and cerebrovascular events(MACCE)(all-cause mortality,acute myocardial infarction,cardiac arrest,and stroke)were compared between *** regression analyses adjusted for sociodemographic,hospitalization features,and *** Our analysis comprised 13260 hospitalizations,7.3% of which were overweight,24.3% Class Ⅰ,24.1% Class Ⅱ,and 44.3% Class Ⅲ.Class Ⅲ obesity includes younger patients,blacks,females,diabetics,and hypertensive *** multivariable logistic analysis,Class Ⅲ obese patients had higher risks of MACCE,inpatient mortality,and respiratory failure than Class Ⅰ obese *** Ⅱ obesity showed increased risks of MACCE,inpatient mortality,and respiratory failure than Class I,but not *** obesity classes had non-significant risks of MACCE,inpatient mortality,and respiratory failure compared to the overweight *** Class Ⅲ obese NAFLD COVID-19 patients had a greater risk of adverse outcomes than class Ⅰ.Using the overweight group as the reference,unfavorable outcomes were not significantly *** obesity had a greater risk of MACCE regardless of the referent group(overweight or Class Ⅰ obese)compared to overweight NAFLD patients admitte

关键词： Non-alcoholic fatty liver disease Obesity Obese Body mass index Major adverse cardiac and cerebrovascular events Mortality Acute myocardial infarction Cardiac arrest Stroke

Experimental investigation on mechanical properties of binary and ternary blended pervious concrete

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Frontiers of Structural and Civil Engineering 2020年第1期14卷 229-240页

作者： Rekha singh sanjay GOEL Department of Civil Engineering I.K.Gujral Punjab Technical UniversityJalandhar 144603India Department of Civil Engineering DAV Institute of Engineering and TechnologyJalandhar 144008India

The purpose of the investigation was to study the effect of binary and ternary blends of cement on the mechanical properties of pervious concrete(PC)specimen through destructive(DT)and non-destructive testing(NDT).Various combinations of fly ash(FA),limestone powder(LP),metakaolin(MK),and silica fume(SF)as mineral admixtures have been investigated to partially replace the cement up to 30%by weight in *** cube specimens of size 150 mm×150 mm×150 mm of binary and ternary blends of mineral admixture of pervious concrete were prepared to conduct standard compressive strength test and split tensile test at 7 and 28 days of *** ultrasonic pulse velocity(UPV)test and Rebound Hammer test were used as a non-destructive testing tool to substantiate the robustness of PC and to determine the approximate mechanical properties where other destructive testing tools are not feasible in case of inplace pervious *** the pervious concrete made with LP based ternary blends(PLM and PLS)were found to perform better than FA based ternary blends(PFM and PFS)and control mix(PC)in destructive and non-destructive testing.

关键词： mineral admixture ternary compressive strength split tensile strength pervious concrete ultrasonic pulse velocity

Dynamic Behaviour of Pond Ash Mixed with Coir and Crumb Rubber

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Journal of Renewable Materials 2023年第3期11卷 1271-1291页

作者： Ashish Malik sanjay Kumar singh Civil Engineering Department Punjab Engineering College(Deemed to be University)Chandigarh160012India

An experimental program was conducted to determine the dynamic properties of pond ash(PA)and pond ash mixed with admixtures like crumb rubber(CR)and coir fiber(CF)which are wastes of different *** CR and CF were mixed separately with pond ash in a percentage ranging from 0%–20%at an interval of 5%and 0%–2%at an interval of 0.5%by weight of pond ash,*** properties(Shear modulus,Number of cycles to initiate liquefaction,Degradation index and Damping ratio)for pond ash mixes were determined using strain-controlled cyclic tri-axial *** shear strain was kept constant at 1.2%and the frequency varied from 0.4 to 1 *** resistance improves when crumb rubber is added to pond ash,however adding Coir fiber to pond ash has essentially no effect on the number of cycles required to initiate *** dynamic shear modulus decreases when crumb rubber was mixed in pond ash whereas when coir fiber is added to pond ash,the dynamic shear modulus increases significantly.A mix of PA,CR,and CF was also tried to balance the number of cycles required to initiate liquefaction and shear *** mixed sample in the proportion of PA(84%)+CR(15)+CF(1%)can be termed a balanced mix as the number of cycles to initiate liquefaction was more than all PA-CF mixes and also the shear modulus was more than all PA-CR *** ratio increases with increasing frequency of loading(0.4 to 1 Hz).

关键词： Pond ash coir crumb rubber cyclic loading liquefaction

Parents’s knowledge and awareness about hepatitis B can influence the vaccination of their children

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World Journal of Virology 2024年第2期13卷 96-106页

作者： Nanda Chhavi Geetika Srivastava Mariya Waseem Abhishek Yadav Surender singh Rajani singh Amit Goel Department of Paediatrics Era’s Lucknow Medical CollegeLucknow 226003Uttar PradeshIndia Medical Consultant National Disease Control ProgramNational Health MissionLucknow 226003Uttar PradeshIndia Department of Hepatology Sanjay Gandhi Postgraduate Institute of Medical SciencesLucknow 226014Uttar PradeshIndia

BACKGROUND Birth-dose(Hep-BD)followed by three additional doses(Hep-B3)of hepatitis B virus(HBV)vaccine are key to eliminating HBV by ***,Hep-BD and Hep-B3 coverage in our country is *** To studied the parent’s knowledge and awareness about HBV infection,its prevention,consequences and *** Parents of 6 months to 8 years old children were interviewed to assess their knowledge&awareness about hepatitis B,its transmission,prevention,illness caused by this,and *** close-ended questions were admini-stered,and responses were recorded as‘yes’,‘no’,or‘not sure’.HBV knowledge score was calculated based on the sum of correct *** correct response scored one point and incorrect,missing or‘not sure’responses received no *** data are presented as number(%)and numerical data are expressed as *** were compared using Chi2 tests and level of significance was kept as P<*** Parents(58.3%mothers)of 384 children(89.9%age<5 years;82%age-appropriately vaccinated)were *** hundred and twenty-two(83.9%)children were Hep-B3 vaccinated.94.3%,87.5%,and 29.2%parents knew about polio,tetanus,and hepatitis B ***,41.2%,15.8%,and 23%parents knew about hepatitis B transmission,consequences of infection,and prevention *** 7.6%parents knew about three-dose schedule of hepatitis B *** 23%parents believed that vaccine could prevent HBV,15.7%knew that HBV affects *** of Hep-B3 vaccinated children were significantly more aware about HBV than the parents of unvaccinated children(P<0.05 for 17/18 questions).CONCLUSION The knowledge and awareness among the parents about hepatitis B is *** Increasing knowledge/awareness about HBV among parents may improve Hep-B3 vaccination coverage.

关键词： Hepatitis B Viral hepatitis Cirrhosis Hepatocellular carcinoma Hepatotropic viruses Transfusion transmitted infection Mother to child transmission

A fuzzy time series forecasting method induced by intuitionistic fuzzy sets

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International Journal of Modeling, Simulation, and Scientific Computing 2015年第4期6卷 130-152页

作者： sanjay Kumar Sukhdev singh Gangwar G.B.Pant University and Agriculture and Technology Pantnagar UttarakhandIndia

Intuitionistic fuzzy sets(IFSs)are well established as a tool to handle the hesitation in the decision *** this research paper,fuzzy sets induced by IFS are used to develop a fuzzy time series forecasting model to incorporate degree of hesitation(nondeterminacy).To improve the forecasting accuracy,induced fuzzy sets are used to establish fuzzy logical *** verify the performance of the proposed model,it is implemented on one of the benchmarking time series ***,developed forecasting method is also tested and validated by applying it on a financial time series *** order to show the accuracy in forecasting,the method is compared with other forecasting methods using different error measures.

关键词： Fuzzy time series intuitionistic fuzzy sets nondeterminacy induced fuzzy set data models.

Peristaltic transport in an elastic tube under the influence of dilating forcing amplitudes

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International Journal of Biomathematics 2020年第4期13卷 167-179页

作者： sanjay Kumar Pandey Amirlal singh Department of Mathematical Sciences Indian Institute of Technology(BHU)Varanasi-221005 India

We investigate flow through an elastic tube which is constrained to a prescribed external forcing consisting of a progressive travelling *** a flow dynamics is closely related to that in the oesophageal *** mechanics of the tube is characterized by a relationship between transmural pressure difference and radial variation of the *** radial variation,assumed to be small,is studied by perturbation *** demonstrate that the elasticity of the tube plays a significant role in the flow *** increment in the forcing amplitude of the inward radial force enhances pressure,time-averaged volume flow rate and hence axial and radial *** is revealed that the elastic nature of the oesophageal tube favors swallowing.

关键词： Peristalsis oesophagus elastic tube dilating forcing amplitude