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混凝土面板堆石坝面板施工技术的进展

河海科技进展 1991年第4期11卷 98-103页

作者： A.Beach r.gill P.Van Emmefick 蔡兆庆

1970年,塔斯曼尼亚州水电委员会曾设计和建造了一座高35m 的威尔莫特坝。该坝乃是建造塞索纳大坝面板所需方法和设备的试验场地。塞索纳大坝高110m,安排在威尔莫特坝竣工之后立即动工,当时是世界上最高的混凝土面板碾压堆石坝之一。对... 详细信息

1970年,塔斯曼尼亚州水电委员会曾设计和建造了一座高35m 的威尔莫特坝。该坝乃是建造塞索纳大坝面板所需方法和设备的试验场地。塞索纳大坝高110m,安排在威尔莫特坝竣工之后立即动工,当时是世界上最高的混凝土面板碾压堆石坝之一。对于这样的坝体高度,需要为钢筋安装和混凝土输送研制出一种专用设备。上述水电委员会研究出的面板施工方法和设备在当时已有许多资料记载。

关键词：混凝土面板堆石坝施工

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耙片曲率对入土性能的影响

粮油加工(电子版) 1983年第8期 8-12页

作者： William r.gill ,Alvin C.Bailey ,Carl A.reaves ,杜森

进行这项研究是为了确定耙片曲率半径对垂直安装耙片入土深度的影响。因为偏角、速度和耙片质量是相互影响的作业参数,因此将不同耙片的耙深作为上述三个变量的函数进行研究。研究所使用的一组耙片共7片,其耙片直径均为610毫米,其曲率... 详细信息

进行这项研究是为了确定耙片曲率半径对垂直安装耙片入土深度的影响。因为偏角、速度和耙片质量是相互影响的作业参数,因此将不同耙片的耙深作为上述三个变量的函数进行研究。研究所使用的一组耙片共7片,其耙片直径均为610毫米,其曲率半径的变化范围从无穷大(平面耙

关键词：耙片入土性能前进速度质量偏角曲率半径

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耙幅和耙深对圆盘耙片受力的影响

粮油加工(电子版) 1982年第8期 14-19页

作者： Carl A.reaves ,Willaim r.gill ,Alvin C.Bailey ,辛为慈

耙片切土宽度和耙深可以作为影响耙片受力特性的变量。9个耙片试验时,前进速度(1.3米/秒)和耙片偏角(0.38弧度)保持不变,而切土宽度和耙深在较大的范围内变化。不同耙片比阻随耙深的变化比牵引阻力随耙深的变化小。曲率半径最小的两种... 详细信息

耙片切土宽度和耙深可以作为影响耙片受力特性的变量。9个耙片试验时,前进速度(1.3米/秒)和耙片偏角(0.38弧度)保持不变,而切土宽度和耙深在较大的范围内变化。不同耙片比阻随耙深的变化比牵引阻力随耙深的变化小。曲率半径最小的两种球面耙片,其受力一般是最大的。试验中使用的锥面耙片,其受力一般介于两种球面耙片受力之间。

关键词：耙片球面侧向力曲面牵引阻力受力

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关系性评价和新时代教育转型

南京师大学报（社会科学版） 2023年第4期 38-51页

作者： [美]肯尼斯·格根 [英]谢尔托·吉尔张新平(译) TAOS研究院斯沃斯莫尔学院全球人道和平促进研究所威尔士大学三一圣戴维分校南京师范大学教育科学学院南京210097

对公共教育能否使年轻人充分准备好应对未来世界复杂需求的质疑已经浮现。正如这类质疑所表明的,传统教育结构--类似工业化生产--并不符合这些需求。维系这种生产模式的关键乃是评估方式,通常都是以对学生表现进行测试和评分的形式。因... 详细信息

对公共教育能否使年轻人充分准备好应对未来世界复杂需求的质疑已经浮现。正如这类质疑所表明的,传统教育结构--类似工业化生产--并不符合这些需求。维系这种生产模式的关键乃是评估方式,通常都是以对学生表现进行测试和评分的形式。因此,亟需一种更具前景的模式替代当下的生产模式,并对传统评估方法进行相应变革。为应对所面临的挑战,本文提出了“基于关系”的教育过程观,以及以关系性过程为中心的评价概念,继而重点关注一系列体现对话、欣赏等实质的相关评价方式。这些评价方式不仅适用于学生评价,也适用于教师评价和学校评价。与此同时,倡导在课程教学中突出对关系性行为的倚重。总之,关系性评价是教育转型的关键所在,而教育转型也有利于发展不断扩大的学习社区,以及有关自身利益的关系性福祉评价。

关键词：关系性评价教育转型新时代

Applying Machine Learning Approach to Explore Childhood Circumstances and Self-rated Health in Old Age-China and the US,2020-2021

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China CDC weekly 2024年第11期6卷 213-218,I0008-I0013页

作者： Shutong Huo Derek Feng Thomas M.gill Xi Chen Department of Health Society&BehaviorPublic HealthUniversity of CaliforniaIrvineCAUSA Department of Statistics and Data Science Yale UniversityNew HavenCTUS Department of Internal Medicine Yale School of MedicineNew HavenCTUS Department of Health Policy and Management Yale School of Public HealthNew HavenCTUS Department of Economics Yale UniversityNew HavenCTUS.

Introduction:Childhood circumstances impact senior health,prompting the introduction of machine learning methods to assess their individual and collective contributions to senior ***:Using health and retirement study(HrS)and China Health and retirement Longitudinal Study(CHArLS),we analyzed 2,434 American and 5,612 Chinese participants aged 60 and *** inference trees and forests were employed to estimate the influence of childhood circumstances on self-rated health(SrH).results:The conventional method estimated higher inequality of opportunity(IOP)values in both China(0.039,accounting for 22.67%of the total Gini coefficient 0.172)and the US(0.067,accounting for 35.08%of the total Gini coefficient 0.191).In contrast,the conditional inference tree yielded lower estimates(China:0.022,accounting for 12.79%of 0.172;US:0.044,accounting for 23.04%of 0.191),as did the forest(China:0.035,accounting for 20.35%of 0.172;US:0.054,accounting for 28.27%of 0.191).Childhood health,financial status,and regional differences were key determinants of senior *** conditional inference forest consistently outperformed others in predictive accuracy,as demonstrated by lower out-of-sample mean squared error(MSE).Discussion:The findings emphasize the need for early-life interventions to promote health equity in aging *** learning showcases the potential in identifying contributing factors.

关键词： collective inequality estimates

Temporal trends and practice variation of paediatric diagnostic tests in primary care:retrospective analysis of 14 million tests

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Family Medicine and Community Health 2024年第4期12卷 1-8页

作者： Elizabeth T Thomas Diana r Withrow Cynthia Wright Drakesmith Peter J gill rafael Perera-Salazar Carl Heneghan Centre for Evidence-Based Medicine Nuffield Department of Primary Care Health SciencesUniversity of OxfordOxfordUK Nuffield Department of Primary Care Health Sciences University of OxfordOxfordUK Department of Pediatrics University of TorontoTorontoOntarioCanada Hospital for Sick Children TorontoOntarioCanada

Objective The primary objective was to investigate temporal trends and between-practice variability of paediatric test use in primary *** and analysis This was a descriptive study of population-based data from Clinical Practice research Datalink Aurum primary care consultation records from 1 January 2007 to 31 December *** aged 0–15 who were registered to one of the eligible 1464 general practices and had a diagnostic test code in their clinical record were *** primary outcome measures were(1)temporal changes in test rates measured by the average annual percent change,stratified by test type,gender,age group and deprivation level and(2)practice variability in test use,measured by the coefficient of *** 14299598 diagnostic tests were requested over 27.8 million child-years of observation for 2542101 *** test use increased by 3.6%/year(95%CI 3.4 to 3.8%)from 399/1000 child-years to 608/1000 child-years,driven by increases in blood tests(8.0%/year,95%CI 7.7 to 8.4),females aged 11–15(4.0%/year,95%CI 3.7 to 4.3),and children from the most socioeconomically deprived group(4.4%/year,95%CI 4.1 to 4.8).Tests subject to the greatest temporal increases were faecal calprotectin,fractional exhaled nitric oxide and vitamin *** classified as high-use and high-practice variability were iron studies,coeliac testing,vitamin B12,folate,and vitamin *** In this first nationwide study of paediatric test use in primary care,we observed significant temporal increases and practice variability in *** reflects inconsistency in practice and diagnosis rates and a scarcity of evidence-based *** test use generates more clinical activity with significant resource implications but conversely may improve clinical *** research should evaluate whether increased test use and variability are warranted by exploring test indications and test results and directly examine how increased test use impacts

关键词： vitamin nationwide stratified

Managing the lifecycle of perovskite solar cells: Addressing stability and environmental concerns from utilization to end-of-life

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eScience 2024年第2期4卷 1-27页

作者： Hee Jung Kim gill Sang Han Hyun Suk Jung School of Advanced Materials Science&Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do 16419Republic of Korea Division of Advanced Materials Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Perovskite solar cells(PSCs)have shown remarkable advancements and achieved impressive power conversion efficiencies since their initial introduction in ***,challenges regarding stability,quality,and sustainability must be addressed for their successful commercial *** review analyses the recent studies and challenges related to the operating life and end-of-life utilization of *** to enhance the stability and mitigate the toxic Pb leakage in operational and recycling approaches of discarded PSCs post their end-of-life are examined to establish a viable and sustainable PSC ***,future research directions are proposed for the advancements in the PSC *** goal is to ensure high efficiency as well as economic and environmental sustainability throughout the lifecycle of PSCs.

关键词： Levelized cost of electricity Metal electrode Pb leakage Perovskite Power conversion efficiency Solar cell life cycle

Design of a Lightweight Compressed Video Stream-Based Patient Activity Monitoring System

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Computers, Materials & Continua 2024年第1期78卷 1253-1274页

作者： Sangeeta Yadav Preeti Gulia Nasib Singh gill Piyush Kumar Shukla Arfat Ahmad Khan Sultan Alharby Ahmed Alhussen Mohd Anul Haq Department of Computer Science&Applications Maharshi Dayanand UniversityRohtak124001India University Institute of Technology Rajiv Gandhi Proudyogiki VishwavidyalayaBhopal462033India Department of Computer Science College of ComputingKhon Kaen UniversityKhon Kaen40002Thailand Department of Computer Science College of Computer and Information SciencesMajmaah UniversityAl Majmaah11952Kingdom of Saudi Arabia Department of Computer Engineering College of Computer and Information SciencesMajmaah UniversityAl Majmaah11952Kingdom of Saudi Arabia

Inpatient falls from beds in hospitals are a common *** falls may result in severe *** problem can be addressed by continuous monitoring of patients using *** advancements in deep learning-based video analytics have made this task of fall detection more effective and *** with fall detection,monitoring of different activities of the patients is also of significant concern to assess the improvement in their *** computation-intensive models are required to monitor every action of the patient *** requirement limits the applicability of such ***,to keep the model lightweight,the already designed fall detection networks can be extended to monitor the general activities of the patients along with the fall *** by the same notion,we propose a novel,lightweight,and efficient patient activity monitoring system that broadly classifies the patients’activities into fall,activity,and rest classes based on their *** whole network comprises three sub-networks,namely a Convolutional Neural Networks(CNN)based video compression network,a Lightweight Pose Network(LPN)and a residual Network(resNet)Mixer block-based activity recognition *** compression network compresses the video streams using deep learning networks for efficient storage and retrieval;after that,LPN estimates human ***,the activity recognition network classifies the patients’activities based on their *** proposed system shows an overall accuracy of approx.99.7% over a standard dataset with 99.63% fall detection accuracy and efficiently monitors different events,which may help monitor the falls and improve the inpatients’health.

关键词： Fall detection activity recognition human pose estimation accuracy

Assessment of the environmental kuznets curve within EU-27:Steps toward environmental sustainability(1990-2019)

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Environmental Science and Ecotechnology 2024年第2期18卷 91-103页

作者： Safwan Mohammed Abid rashid gill Kaushik Ghosal Main Al-Dalahmeh Karam Alsafadi Szilárd Szabó Judit Oláh Ali Alkerdi Akasairi Ocwa Endre Harsanyi Institute of Land Use Engineering and Precision Farming TechnologyFaculty of Agricultural and Food Sciences and Environmental ManagementUniversity of DebrecenBöszörményi 138H-4032DebrecenHungary Institutes for Agricultural research and Educational Farm University of DebrecenBöszörményi 138H-4032DebrecenHungary Department of Economics The Islamia University of BahawalpurPakistan Department of Mining Engineering Indian Institute of Engineering Science and TechnologyShibpurP.O.711103Botanic GardenHowrahWest Bengal711103India Institute of Management and Organization Sciences Faculty of Economics and BusinessUniversity of DebrecenEgyetem Tér 14032DebrecenHungary School of Geographical Sciences Nanjing University of Information Science and TechnologyNanjing210044China Department of Physical Geography and Geoinformatics Faculty of Sciences and TechnologyUniversity of DebrecenEgyetem tér 14032DebrecenHungary Faculty of Economics and Business University of Debrecen4032DebrecenHungary Department of Trade and Finance Faculty of Economics and ManagementCzech University of Life SciencesPrague16500PragueCzech Republic Department of Agricultural Economics Faculty of AgricultureKahramanmaras SütçüImam UniversityTurkey Department of Agriculture Production Faculty of AgricultureKyambogo University P.O.B.1KyambogoKampalaUganda

reducing environmental pollution is a critical goal in global environmental economics and economic *** European Union(EU)faces environmental challenges due to its development *** we present a comprehensive approach to assess the impact of carbon dioxide(CO_(2))emissions,energy consumption(EC),population structure(POP),economy(GDP),and policies on the environment within the EU using the environmental Kuznets curve(EKC).Our research reveals that between 1990 and 2019,the EU-27 experienced an increase of t1.18 million tonnes of oil equivalent(Mtoe)per year in energy consumption(preased by 24.25 million tonnes(Mt)per year(preduction in CO_(2)emissions occurred in Germany(7.52 Mt CO_(2)annually),and the lowest in Latvia(0.087 Mt CO_(2)annually).The empirical EKC analysis shows an inverted-U shaped relationship between GDP and CO_(2)emissions in the ***,a 1%increase in GDP results in a 0.705%increase in carbon emission,while a 1%increase in GDP2 leads to a 0.062%reduction in environmental pollution in the long run(preached a stage where economic growth positively impacts the ***,this study provides insights into the effectiveness of environmental policies in mitigating degradation and promoting green growth in the EU 27 countries.

关键词： Invasion risk Climate change Adaptive genomic variation Genomic offset Habitat suitability