Performance Model Analysis of Armenian Premier League Soccer Players Using Global Positioning System Technology and Comparison between European Championship

The aim of this research was to analyze the PPM of Armenian Premier League using 25 GPS 10 Hz(K-Sport,Montelabbate,Italy),in order to compare data from literature from major European championship.In total 25 matches were analyzed from one team militant in Armenian Premier League(10 wins,10 loses and 5 draws),33 different players(age 24.3±4.2,height 1.76±4.2 and weight 74±3.5)and in total 270 performances(10.8 for matches).Matches were divided in First Half(T1),Second Half(T2),Second Half Substitution(T2 Sub),Full Match,Full Match Substitution(Full Match Sub)and Total Match(Total)that include all the players detected during a games.Furthermore,all matches were divided even by quarters 0-15,15-30,30-45,45-60,60-75 and 75-90,only players that played all match were included in this analyses,in order to check the performance decreasing during the time.All data were added in an Excel Spreadsheet in order to build a database,to organize and better analyze data,cataloging events for data,results,and role of players.Average data from Armenian Premier League in comparison with literature data from European and Italian Championship show that in every parameter,the Armenian Premier League is under the average.This is obviously related to the non-high level of the Armenian football that is in fact placed at the 106°place of the FIFA ranking(update 7 June 2019).Physical data represent an indicator of performance but also of the qualitative level of the league and of individual players.For this reason,the use of the match analysis can be decisive to verify the PPM,in order to better evaluate the championships,teams,and players,in order to build an easier search and discovery of talents.

Research on the Comparison between the Different Policies by Service Level and Inventory Level Performance of Auto Parts in N.A.C.C.(North Automobile Components Company)

As after sales services become more and more popular,particularly preven­tive or corrective maintenance,the intervention and repair of the custom­er’s goods in a timely and efficient manner ensure customer satisfaction and contribute to the establishment of brand image in the market of the suppliers.The availability and quality of spare parts are key elements of this strategy while ensuring minimal management costs.The reuse of spare parts retrieved from customer systems is a growing maintenance strategy practice which impacts the traditional spare parts supply chain.This reuse is primarily driven by extending the economic life of goods,initially re­garded as waste and therefore without added value,by transforming them into valuable spare parts that can be reused;secondly,for environmental or regulatory reasons,demanding responsibility for the treatment of products at the end of their life;and thirdly,to improve the availability of parts for maintenance,especially parts that the organization can no longer purchase or that are impacted by other issues.It also involves the analysis of their condition and their eventual return to working order as they are retrieved from the customer’s systems in a defective condition.In this paper,we will identify and classify the different customers and spare parts by estimating the critical level of rationing policy based on forecasts,identify the thresh­olds of inventory management policies,and finally,compare the different policies by service level and inventory level performance for the N.A.C.C.company.

A multidimensional examination of performances of HSR (High-Speed Rail) systems

This paper deals with a multidimensional examination of the infrastructural, technical/technological, operational, economic, social, and environmental performances of high-speed rail （HSR） systems, including their overview, analysis of some real-life cases, and limited （analytical） modeling. The infrastructural performances reflect design and geometrical characteristics of the HSR lines and stations. The technical/technological performances relate to the characteristics of rolling stock, i.e., high-speed trains, and supportive facilities and equipment, i.e., the power supply, signaling, and traffic control and management system（s）. The operational performances include the capacity and productivity of HSR lines and rolling stock, and quality of services. The economic per- formances refer to the HSR systems＇ costs, revenues, and their relationship. The social performances relate to the impacts of HSR systems on the society such as congestion, noise, and safety, and their externalities, and the effects in terms of contribution to the local and global/country social- economic development. Finally, the environmental performances of the HSR systems reflect their energy consumption and related emissions of green house gases, land use, and corresponding externalities.

Comparative Study of Novel Axial Flux Magnetically Geared and Conventional Axial Flux Permanent Magnet Machines

In this paper,a performance comparison between the novel axial flux magnetically geared machines(AFMG)and the conventional axial flux YASA machine is presented.The AFMG and YASA machines have the same stator construction in which segments are equipped with concentrated windings to form the stator.However,the AFMG machine has two rotors with different pole-pair numbers.Magnetic gear effect can be obtained to increase the torque density.The performance comparisons at no-load and on-load conditions are then studied by 3D-finite element analysis(FEM).Moreover,both machines are prototyped,tested and compared.

Analysis of Speed Thresholds in Youth Amateur Football Players Divided by Roles Using GPS Technologies

Ability to accelerate, decelerate, recover and sprint again, is a crucial ability for team sports, athletes are forced in repeatingthis actions several times during matches. The objective parameters that influence resistance to sprints are their duration and recovery.The aim of this study was to analyze performance of young under 18 football players on high intensity running thresholds with the useof GPS 20 Hz （K-Sport Universal, Montelabbate, Italy）. We have analyzed three football matches of Marche Amateur under 18Championship （Italy） during 2017 season, using 10 GPS, one for each players except the goalkeeper. In order to better define a moreaccurate PPM （players performance model）, the players that have been substituted were removed from analysis, using only data fromfull match to build database. Total of detection is 26, with an average of 8.6 players for match divided by role. Our result according withliterature shows that in total distance, the role that obtained higher value was external midfielder and forward traveled more distance insprint.

A Binomial Model Approach: Comparing the R0 Values of SARS-CoV-2 rRT-PCR Data from Laboratories across Northern Cyprus

Northern Cyprus has implemented relatively strict measures in the battle against the outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The measures were introduced at the beginning of the COVID-19pandemic, in order to prevent the spread of the disease. One of these measures was the use of two separate realtime reverse transcription polymerase chain reaction (rRT-PCR) tests for SARS-CoV-2 referred to as the doublescreening procedure, which was adopted following the re-opening of the sea, air and land borders for passengersafter the first lockdown. The rRT-PCR double screening procedure involved reporting a negative rRT-PCR testwhich was carried in 72 to 120 h before departure whilst presenting no known symptoms of the COVID-19and performing a second rRT-PCR test at the point of arrival. This study compares the results of SARS-CoV-2rRT-PCR tests performed on incoming flight passengers from the 1st July to 9th of September 2020 to NorthernCyprus. The rRT-PCR test results collected by the Near East University (NEU) DESAM COVID-19 laboratory werecompared with the rRT-PCR test results collected by the Ministry of Health and/or private COVID-19 laboratoriesin Northern Cyprus. This comparative study was conducted using binomial distribution. In addition, by applyingthe Susceptible-Exposed-Infected-Removed (SEIR) model to Northern Cyprus, overall basic reproduction number(R0) value of the COVID-19 was analysed for the same time period to act as a threshold for this comparison.In both the statistical and SEIR mathematical model, R0 was calculated. It was assumed that, the more similarthe R0 results of NEU DESAM COVID-19 laboratory and other laboratories were with the overall R0 value ofNorthern Cyprus, the more reliable the results would be. We calculated that the median R0 values of the NEUDESAM COVID-19 laboratory and other laboratories performing the SARS-CoV-2 rRT-PCR on air passengersduring the studied period to be 0.96 and 1.29, respectively, compared to Northern Cyprus median R0 value whichwas 0.99. The rRT-PCR screening results from the NEU DESAM COVID-19 laboratory were closely aligned withthe screening results of Northern Cyprus whereas the screening results reported by other laboratories were not in afit with the regional pattern. This study also aimed to point out the importance of the rRT-PCR screening procedure since asymptomatic positive SARS-CoV-2 cases entery to Northern Cyprus was inhibited and this prevented thespread of the disease within the population.

Experimental Analyses of Moderately High-Temperature Heat Pump Systems with R245fa and R1233zd(E)

With the limited production and use of R245fa,environmentally friendly refrigerant has attracted the attention of researchers.Due to the similar thermal characteristics,R1233zd(E)is considered to be an ideal substitute for R245fa in heat pump systems.In this study,the performance and economic analysis of heat pump systems with R245fa and R1233zd(E)as refrigerants are carried out.The results show that the total cost of R1233zd(E)system is more than 10%higher than that of R245fa system under the same heating load.With the increase of condensation temperature,the heating capacity of both systems decreases,and with the increase of evaporation temperature,the heating capacity increases.The variation trend of coefficient of performance(COP)of the two systems is similar to that of heating capacity.Under the same operating conditions,the COP of R1233zd(E)system is 19.2%higher than that of R245fa system,and the volumetric heat capacity of R1233zd(E)is 9.0%–13.9%lower than that of R245fa.The economic analysis results show that the investment cost of R1233zd(E)system is low under the same heat load.

复合绝缘材料用连续玄武岩纤维老化特性及机理

探究连续玄武岩纤维在各类介质环境下的稳定性对于拓展其在复合绝缘材料上的应用至关重要。为此,文中比对了10组不同产地的连续玄武岩纤维与无碱玻璃纤维在酸性环境、碱性环境、富盐环境以及高温富盐环境下的老化特征差异,分析了连续玄武岩纤维的老化机理,通过灰色关联分析明确了构成玄武岩纤维耐候性的关键成分。结果表明:超过50%的玄武岩纤维样本拥有优于无碱玻璃纤维的耐盐碱环境的能力;碱性环境下,Si、Al、B元素与OH−的反应性造成两类纤维损伤,其中玄纤由于内部高含量的Ca、Mg,更易形成氢氧化物附着于纤维表面,降低了损伤程度;富盐环境下纤维表层的Ca、Na、K等元素扩散至溶液,导致了纤维表层结构疏松,且在介质渗透溶胀的作用下形成缺陷,致使两类纤维强度同步下降,但在老化周期内玄武岩纤维仍呈现出更高的力学特征。综上,玄武岩纤维更适于应用在盐碱重污秽地区的中低压复合绝缘产品或高力学需求的电工材料。

基于中医执业医师分阶段考试的中医学专业成绩分析与策略研究

[目的]总结和分析浙江中医药大学中医学专业学生的培养质量和存在问题,为中医药院校提高教学质量和学生临床知识及技能提供参考。[方法]以该校2018至2020年参加中医执业医师分阶段考试(第一阶段)实证研究的中医学专业学生为研究对象,采用方差分析和χ^(2)检验进行数据分析,比较分阶段考试成绩与在校学习成绩的相关性、考试通过率、掌握率。[结果]分阶段考试成绩能够较好地反映学生在校学习成绩情况,理论考试平均通过率为68.64%,技能考试平均通过率95.27%。理论考试平均总掌握率为65.06%,其中西医(基础医学类)55.57%、西医(临床医学类)52.12%,与理论考试总掌握率比较,差异有统计学意义(P<0.05);技能考试总掌握率为76.57%,第3~4站(体格检查)的平均掌握率分别为71.24%、72.24%。可以通过制定考试激励机制来提高学生考试内驱力,通过强化西医课程培训来提升理论考试通过率,通过反复临床技能训练来补齐技能考核的短板等改进措施和策略,从而提高学生的临床知识和技能,可为中医药院校提高教学质量作参考。[结论]中医药院校可以通过制定考试激励机制、强化西医课程培训、反复临床技能训练来提高学生的临床知识和技能,从而提高中医学专业学生的培养质量。

薄膜电容器数据挖掘与分析

作为电力系统的重要元件之一,薄膜电容器因长使用寿命、高可靠性等优点而受到广泛应用,然而却极少有研究从数据角度挖掘电容器的自身属性。为了填补这一空白,本文选取收集自网络的40793条薄膜电容器数据作为分析基础,首先利用散点图和箱线图从横向角度分析了不同材料制备而成的电容器的容值、最高最低温度、交直流运行电压等差异,然后利用饼图从纵向角度对比了电容器的运行温度和应用场合,最后计算出这些性能指标的皮尔逊系数并进行了相关性分析。结果表明金属化聚丙烯材料作为目前的主流材料在容值和交直流运行电压方面比其他材料均具有显著的优势,而金属化聚苯硫醚在运行温度上占优,电容器除温度和运行电压外的各项参数之间的相关性并不显著。未来可以进一步对数据进行处理和学习,达到性能预测的效果。

供热锅炉选型与经济性分析

循环流化床锅炉、煤粉工业锅炉因能效高、环保性能好,是燃煤工业锅炉的重要发展方向,为满足锅炉选型需要,从技术性能、运行维护、经济、环保等方面对两种炉型对比分析,并结合项目案例进行实践比选。项目案例表明:因所在地周边无集中制粉厂家,该案例煤粉工业锅炉需要炉前制粉,煤粉工业锅炉方案建设投资比循环流化床锅炉方案高626万元,蒸汽生产成本比循环流化床锅炉方案低33.6万元/a;由于煤粉工业锅炉附属制粉工艺安全隐患较多,因此,从经济性和安全性考虑,项目案例选用循环流化床锅炉方案。两种炉型没有绝对的优劣,循环流化床锅炉适应煤质范围宽,煤粉工业锅炉更适应周边环境要求高、自动化水平高的区域,要根据具体场景、条件,选择最适宜的炉型。

Performance Analysis and Future Prospect of China’s Anti-bullying Policy and Practice:Evidence from PISA 2015 and PISA 2018

This paper analyzes the performance of China’s anti-bullying efforts with the data on school bullying in the Program for International Student Assessment(PISA)2015 and PISA 2018.It is found that China has fully demonstrated its high performance in anti-bullying actions with all three key performance indicators dropping dramatically,namely the prevalence of bullying,the index of exposure to bullying,and the percentage of frequently bullied students.Further,from the perspectives of personal characteristics and school features,two rounds of PISA data are adopted to make the longitudinal diachronic comparison and the cross-national horizontal comparison,followed by the analysis of the occurrence and development patterns of school bullying.Five suggestions are put forward for the deployment of China’s anti-bullying action plan.

教育考试数字化转型的国际比较与未来进路

教育考试数字化转型是落实教育评价改革的重要举措,对典型国家的相关探索与实践进行比较分析,有助于为我国教育考试高质量发展提供借鉴。基于从技术赋能、要素转型和信息交互三个维度对教育考试数字化转型的内涵审视,比较分析中国、美国、英国、日本、澳大利亚和印度六国教育考试数字化转型概况发现:在推进机制方面,中国、日本强调政府主导的顶层设计,其余国家则注重依托教育组织机构;在实践领域方面,中国、英国涉及的领域范围较广,多数国家已在开展高利害考试数字化转型,英国、美国、日本改革力度更大;在运行保障方面,美国、英国和澳大利亚保障机制相对完善,中国、日本也展现出高度的战略前瞻性。虽然不同国家间教育考试数字化转型的推进路径与实践举措各异,但同时也体现出要素保障密集落地、技术系统迭代升级、模式转变创新深化、服务应用拓展联通、试点示范破局开路等共性。未来,我国可在以下五方面着力:一是夯实安全可靠的基础保障;二是研发优化自适应测试系统;三是推广机考网考等无纸化考试;四是延伸数字化考试应用服务;五是以实践试点先行促进实施。由此推动教育考试数字化转型走向深入,助力教育强国建设。

基于有限元分析的高频片上耦合电感器性能对比与优化设计

耦合电感器是一种利用电磁感应原理实现电能转换和传输的器件,它在信号传输、电子设备等领域有着广泛的应用和重要的意义。然而,传统的耦合电感器通常需要线圈和铁芯等结构,这使得其电感值受到器件尺寸的限制,而且还会产生寄生电容和电阻等不利因素,影响其性能和效率。因此,如何设计和优化耦合电感器的结构,提高其性能指标,是当前研究的热点和难点。本文对比研究了三种不同结构的耦合电感器,分别是双曲折耦合电感、八边形螺旋耦合电感和上下结构的双面耦合电感。目的是探讨不同结构对耦合电感器性能的影响,为优化设计和应用提供指导。本文采用了有限元分析和电路仿真的方法,计算和比较了各种结构的耦合电感器的电感感值、耦合系数、品质因数等性能指标。结果表明,双曲折耦合电感具有最高的品质因数和输出电压,适合于高效率的无线能量传输;八边形螺旋耦合电感具有最高的耦合系数和电感感值,适合于高频率的信号传输;上下结构的双面耦合电感制作简单、成本较低,适合于紧凑型的电子设备。本文为不同应用场景下的耦合电感器的选择和优化提供了参考依据,也为进一步提高耦合电感器的性能和可靠性提出了一些改进方向。

三层钢框架结构振动台试验及性能分析

为了更加直观地了解钢框架结构在地震作用下的动力响应,根据相关规范对原型三层三跨两榀钢框架进行1/10非完全缩尺,施加三种地震波输入振动台使钢框架结构进行振动获取其加速度、位移和应变动力响应并进行抗震性能分析,为后续研究结构抗震中结构参数的选取提供参考依据。

弱连接体支座形式对非对称双塔结构的影响分析

非对称双塔连体结构在连接体位置不高时常采用弱连接形式,连接体支座的选择对两侧结构受力影响很大。对比分析连接体在不同的弱连接方式下塔楼主体结构动力特性及主体结构关键构件在罕遇地震下的抗震性能,对连接体楼板进行了舒适度分析。结果表明,即使采用弱连接方式,连接体的体量及高度与塔楼单体越接近,连接体对塔楼的约束作用越明显;连接体两侧采用双向摩擦摆支座方案优于采用一端固接铰支座、一端双向摩擦摆支座方案;在罕遇地震下,采用双向摩擦摆支座方案的塔楼在连接体及以下楼层层间位移角为不同方案中的最小值,关键构件能达到更高的性能水准;双向采用摩擦摆支座方案会带来较大的支座水平位移,需要在设计中采取措施以确保连接体在罕遇地震下不致脱落;对于具有不同建筑功能的多层连体结构,可通过增加楼板厚度更有效地降低各层楼板竖向加速度峰值,以满足楼板舒适度的要求。

用地审批管理效能分析评价模型初探——以上海市建设用地审批为例

土地资源的合理配置与高效利用成为城市发展面临的重要问题,建设用地审批作为土地资源管理的核心环节,其管理效能直接关系到土地资源的有效利用和城市发展的可持续性。本文梳理用地审批管理的相关理论及实践,探析超大城市用地审批管理效能分析评价流程,构建用地审批管理效能综合分析评价体系,并以上海市2023年度审批项目进行实证研究,抽取9个审批单位的86个项目,采用系统比对、数据库技术核查、查阅卷宗等方式开展分析,以检查结果为基础,整合多年工作实践成果,总结30项共360个具体审批问题,剖析扣分严重项,就强化用地审批管理效能评价模型应用等适应上海市管理实际的提升路径展开研究,旨在探讨其对规范审批流程、土地利用效率以及城市可持续发展的影响,为其他城市建设用地审批监管提供借鉴和启示。

不同专业中医本科生生理学期末试卷的数据分析

目的提高生理学试卷质量及教学水平。方法运用北京中医药大学试卷分析系统,对北京中医药大学2019级五年制不同专业(中医学、中医学实验班、针灸推拿学)生理学期末考试试卷的难度、区分度、信度和效度进行评价,并统计分析试卷成绩。结果共分析了生理学期末试卷603份。试卷分析发现,该试卷难度适中、区分度较好,主观题难度大于客观题;学生成绩分布基本合理,成绩真实可靠。通过试卷成绩统计分析发现,中医学和中医学实验班在平均分、主观题、客观题的得分,以及及格率和优秀率上,都明显优于针灸推拿学(P<0.05)。结论文章为教师面对不同专业方向的学生开展有针对性的生理学教学活动提供了数据支持,也为提高生理学试卷出题质量和教学水平提供了参考依据。

基于DEA模型的浙江省省级农业科技园区运营效率评价与分析

省级农业科技园区是农业创新体系建设的重要组成部分,是推动区域农业发展、技术革新及产业结构优化的重要载体。本文在“浙江省省级农业科技园区2022年度绩效监测”基础上,从投入-产出视角,基于数据包络分析模型,对浙江省省级农业科技园区的运营效率进行测度,计算出园区的综合效率、纯技术效率和规模效率,并在对结果进行深入对比分析后,提出相关建设意见。

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