Enhancing Learners’Performance in Grade 7 Mathematics Through 50-30-20 Exercise

Assessment exercises constitute a crucial component of the teaching and learning process,serving the purpose of gauging the degree to which learning objectives have been accomplished.This study aims to assess the mathematics performance of Grade 7 learners using the 50-30-20 exercise.Specifically,this study seeks to determine the learners’pre-test and post-test mean scores,identify significant differences between the pre-test and post-test results,evaluate learners’exercises,and propose enhanced exercises.The research employs a quasi-experimental design,with 40 Grade 7 learners in the school year 2023-2024 as participants,selected through purposive non-random sampling.Statistical data analysis involves the use of mean,standard deviation,paired t-test,and Cohen’s D effect size.Ethical considerations were paramount,as evidenced by a letter of authorization from the school head outlining the strict adherence to voluntary participation,informed parental consent,anonymity,confidentiality,risk mitigation,results-sharing protocols,and the commitment to keeping research data confidential.The data yielded a remarkable outcome:the experimental group exhibited improvement in both the pre-test and post-test.This result substantiates the initial objective of the study,showcasing a noteworthy and favorable performance among the participants.Consequently,it suggests that a majority of the participants strongly agree that the 50-30-20 exercises contribute to enhancing their understanding and problem-solving skills,as well as their ability to grasp mathematical concepts and improve their overall performance in mathematics.Therefore,the 50-30-20 exercises not only facilitated students in understanding mathematics lessons but were also aligned with the Department of Education’s development plan.

Performance-Based Design through Implementation of FEMA P-58 Methodology in Developing Countries

This paper investigates a simple approach proposed towards performance-based earthquake engineering (PBEE) which has potential applications to the performance-based design (PBD) and performance-based assessment (PBA) fields. The simple method of PBEE encompasses three areas of seismic risk which include seismic hazard, structural analysis, and loss models. The aim of the PBEE process, entitled as FEMA P-58, is to present essential data needed to make a rational decision regarding predicted performance, where various sources of uncertainties are involved. In developing countries, the lack of suitable real ground motions corresponding to site characteristics and seismicity particularly for larger intensities and the scarcity of demands, which makes it hard to identify the seismic capacity of a structure, is the main our motivation of using the FEMA method. In this paper, the method of FEMA P-58 is investigated, in terms of available tools and required data, in such a way that it will be applicable for developing countries which are located in high seismic hazard zones. To achieve this goal, three steel moment-resisting buildings with low and high ductility, and three steel braced-frame buildings are selected as case studies. The mean annual loss is estimated by the available software, Performance Assessment Calculation Tool (PACT). The achieved results, i.e. the loss curves, will provide a simple means by which the engineers can quantify and communicate seismic performance to other stakeholders. In the case study buildings, the braced one has less annual losses in comparison with other investigated cases, and the structure with high ductility can be considered as the next ones. Execution cost of each building should be considered by contractors. Also, seismic fragility curves of structures for various limit states, as well, the corresponding loss models are identified as the most essential data towards application of the investigated PBEE process.

Simplified seismic performance assessment and implications for seismic design

The last decade or so has seen the development of refined performance-based earthquake engineering(PBEE) approaches that now provide a framework for estimation of a range of important decision variables,such as repair costs,repair time and number of casualties. This paper reviews current tools for PBEE,including the PACT software,and examines the possibility of extending the innovative displacement-based assessment approach as a simplified structural analysis option for performance assessment. Details of the displacement-based s+eismic assessment method are reviewed and a simple means of quickly assessing multiple hazard levels is proposed. Furthermore,proposals for a simple definition of collapse fragility and relations between equivalent single-degree-of-freedom characteristics and multi-degree-of-freedom story drift and floor acceleration demands are discussed,highlighting needs for future research. To illustrate the potential of the methodology,performance measures obtained from the simplified method are compared with those computed using the results of incremental dynamic analyses within the PEER performance-based earthquake engineering framework,applied to a benchmark building. The comparison illustrates that the simplified method could be a very effective conceptual seismic design tool. The advantages and disadvantages of the simplified approach are discussed and potential implications of advanced seismic performance assessments for conceptual seismic design are highlighted through examination of different case study scenarios including different structural configurations.

A Pragmatic Approach for Assessing the Economic Performance of Model Predictive Control Systems and Its Industrial Application

In this article,an approach for economic performance assessment of model predictive control(MPC) system is presented.The method builds on steady-state economic optimization techniques and uses the linear quadratic Gaussian(LQG) benchmark other than conventional minimum variance control(MVC) to estimate the potential of reduction in variance.The LQG control is a more practical performance benchmark compared to MVC for performance assessment since it considers input variance and output variance,and it thus provides a desired basis for determining the theoretical maximum economic benefit potential arising from variability reduction.Combining the LQG benchmark directly with benefit potential of MPC control system,both the economic benefit and the optimal operation condition can be obtained by solving the economic optimization problem.The proposed algorithm is illustrated by simulated example as well as application to economic performance assessment of an industrial model predictive control system.

Synthetic security assessment for incomplete interval-valued information system

In order to understand the security conditions of the incomplete interval-valued information system （IllS） and acquire the corresponding solution of security problems, this paper proposes a multi-attribute group decision- making （MAGDM） security assessment method based on the technique for order performance by similarity to ideal solution （TOPSIS）. For IllS with preference information, combining with dominance-based rough set approach （DRSA）, the effect of incomplete interval-valued information on decision results is discussed. For the imprecise judgment matrices, the security attribute weight can be obtained using Gibbs sampling. A numerical example shows that the proposed method can acquire some valuable knowledge hidden in the incomplete interval-valued information. The effectiveness of the proposed method in the synthetic security assessment for IIIS is verified.

Methods and Practices for Institutional Benchmarking based on Research Impact and Competitiveness: A Case Study of ShanghaiTech University

Purpose: To develop and test a mission-oriented and multi-dimensional benchmarking method for a small scale university aiming for internationally first-class basic research.Design/methodology/approach: An individualized evidence-based assessment scheme was employed to benchmark ShanghaiTech University against selected top research institutions,focusing on research impact and competitiveness at the institutional and disciplinary levels.Topic maps opposing ShanghaiTech and corresponding top institutions were produced for the main research disciplines of ShanghaiTech. This provides opportunities for further exploration of strengths and weakness. Findings: This study establishes a preliminary framework for assessing the mission of the university. It further provides assessment principles, assessment questions, and indicators.Analytical methods and data sources were tested and proved to be applicable and efficient.Research limitations: To better fit the selective research focuses of this university, its schema of research disciplines needs to be re-organized and benchmarking targets should include disciplinary top institutions and not necessarily those universities leading overall rankings.Current reliance on research articles and certain databases may neglect important research output types.Practical implications: This study provides a working framework and practical methods for mission-oriented, individual, and multi-dimensional benchmarking that ShanghaiTech decided to use for periodical assessments. It also offers a working reference for other institutions to adapt. Further needs are identified so that ShanghaiTech can tackle them for future benchmarking.Originality/value: This is an effort to develop a mission-oriented, individually designed,systematically structured, and multi-dimensional assessment methodology which differs from often used composite indices.

Proposed Method for Cost Assessment of Seismic Mitigation Designs for Reinforced Concrete Buildings According to ECP Code

The Earthquake can be considered as a natural phenomenon or a disaster based on the seismic response of structures during a severe earthquake that plays a vital role in the extent of structural damage and resulting injuries and losses. It is necessary to predict the performance of the existing structures and structures at the design stage when it subjected to an earthquake load. Also, it is needed to predict the repair cost required for the rehabilitation of the existing buildings that is insufficient in seismic resistance, and the construction cost and the expected repairing cost for the structures at the design stage that designed to have a ductile behavior with acceptable cracks. This study aims to propose a method for seismic performance evaluation for existing and new structures depending on the width of cracks resulted from the seismic exposure. Also, it assesses the effect of building performance during earthquakes on its life cycle cost. FEMA 356 criteria were used to predict the building responses due to seismic hazard. A case study of seven-story reinforced concrete building designed by four design approaches and then analyzed by static nonlinear pushover analysis to predict its response and performance during earthquake events using Sap 2000 software. The first design approach is to design the building to resist gravity loads only by using ECP code. The second one is to design the building to resist gravity loads and seismic loads by using static linear analysis according to ECP code. The third one is to design the building to resist gravity loads and seismic loads by using static linear analysis according to the regulations of the Egyptian Society of Earthquake Engineering (ESEE). Finally the fourth one is to design the building as the second approach but with ground acceleration greater by five times than it or by using ductility factor R = 1. The methodology followed in this study provides initial guidelines, and steps required to assess the seismic performance and the cost associated with using a variety of design methods for reinforced concrete structures resisting earthquakes, selecting the retrofitting strategies that would be indicated to repair the structure after an earthquake.

三级公立医院绩效考核管理中KPI的应用进展

随着薪酬制度和绩效考核改革在全国深入开展,在现有体系的基础上完善绩效考核指标有助于保证考核的公平性和合理性。关键绩效指标(keyperformanceindicator,KPI)可以将医院总发展目标层层分解细化成具体的、可实现的阶段性目标,并与个人发展和薪酬相挂钩,从而调动医务人员的积极性,对于提高工作效率和实现整体战略目标具有重要价值意义。如何编制以目标为导向的KPI绩效考核体系已成为近年来研究的热点话题。基于此,笔者以政策制度改革为背景,总结传统绩效考核体系中有待改进的问题,指出考核指标改革的现实意义和重要性;综述现阶段KPI的应用领域及优势,对现存问题进行梳理,为今后医院绩效考核指标体系的构建提供借鉴。

基于改进Park-Ang模型的RC桥墩地震动损伤及滞回耗能特性研究

桥梁结构尤其是桥墩在强震作用下的地震动损伤、滞回耗能及其分布,是基于性能抗震设计的重要基础。本文引入改进的Park-Ang双参数损伤评估模型,以某靠近活动断层的高速公路RC梁式桥等效单墩模型为对象,深入分析了加速度峰值(PGA)、频谱、持时等三个地震动要素对损伤、滞回耗能及其分布的影响规律。研究表明,损伤及累积滞回耗能沿桥墩竖向自下而上显著减小,随着PGA的增大,墩底及附近截面的损伤指标明显增大,损伤高度不断扩大,损伤参与系数分布基本稳定,墩底损伤一般占桥墩总损伤的30%～40%。累积滞回耗能所致损伤可达总损伤的20%～80%,不容忽略。地震动频谱特性影响显著,当地震波卓越周期与结构自振周期接近时,会导致各项指标的显著增加。持时对损伤分布比例没有明显影响,但强震持时对于截面损伤值存在累加效应。

基于FEMA P-58的RC框架结构抗震及减隔震性能评估

该文采用FEMA P-58理论进行RC框架结构抗震及减隔震性能评估。设计了一栋典型多层RC框架结构,并在此基础上添加屈曲约束支撑以及隔震支座形成BRB-框架结构与隔震框架结构,采用OpenSees软件建立了3个结构的有限元模型,选取合适的地震动记录并调幅,对三个结构进行了非线性结构响应分析。针对多遇地震、基本地震、罕遇地震、极罕遇地震4个地震动强度,使用FEMA P-58理论中基于强度的方法,对三个结构在四个地震强度下进行性能评估,并针对各性能指标的评估结果进行对比分析。地震损失评估结果显示,采用隔震框架结构与BRB-框架结构可以有效降低建筑物在地震作用下的维修成本与维修时间。与普通框架相比,在罕遇地震作用下隔震结构的维修成本与维修时间可降低65%与58%,BRB-支撑框架结构可降低47%与34%。

业绩型股权激励、行权条件与企业ESG表现

企业ESG表现颇受投资者关注,提升企业ESG表现以提高竞争力也逐渐形成共识。作为一种长期激励方式,股权激励如何促使高管提升企业ESG表现?为了研究这一问题,本文选取2008—2021年沪深A股上市公司作为研究对象,探究业绩型股权激励及其行权条件对企业ESG表现的影响。实证结果表明,业绩型股权激励显著提升企业ESG表现。当高管任期较长时,这一关系更为显著。进一步研究发现,行权业绩考核越难、行权等待期越长越有助于提升企业ESG表现,但行权有效期不影响企业ESG表现。上述研究结论有助于企业完善高管股权激励的契约结构,促进企业ESG表现的提升。

基于表现性试题的初中历史教学研究

随着《义务教育课程方案和课程标准(2022年版)》的颁布,以检测学生核心素养为目的的表现性试题成为当下考试评价的一大趋势。课堂教学应遵循教学评一体化理念,以终为始,从表现性试题出发,通过“情境构建—任务实施—评价导引”组织学习活动,即立足真实情境、创设复杂任务、实施多元评价,达成核心素养培育的课程目标。

历史建筑性能化防火设计方法分析

本文主要对历史建筑性能化防火设计进行分析,在明确性能化防火设计基本内容的基础上,对比几种常见的防火设计方法,以增强性能化防火设计的有效性,切实发挥其应对风险的能力,满足传承历史建筑的实际需求,增强消防系统的稳定性与针对性。

借鉴OKR的公共部门青年员工考核激励机制设计——以央行分支机构为例

公共部门员工的绩效考核历来是人力资源管理的难点和热点,对于绝大多数公共机构而言,如何提高员工绩效考核指标的科学性和满足员工的个性化发展仍需要进一步研究。文章通过对央行分支机构的青年员工的考核激励现状和存在的问题进行分析,运用目标与关键成果(Objectives and Key Resuits,即OKR)法及积分制管理等人力资源和绩效考核管理方法,针对青年员工特点设计了一套考核激励机制。针对现行考核模式缺乏差异化等问题,借鉴OKR工作法将单位和部门的发展目标层层分解为青年员工个人的工作目标,并对青年员工个人目标完成情况进行积分制管理,按全行青年员工积分排名确定考核等次,将员工考核结果作为绩效工资发放、评奖推优、提拔晋升等方面的重要参考。运用这一考核激励机制,能有效提高青年员工的积极性,营造比学赶超、奋勇争先的良好创业干事氛围。

基于刚度-阻尼器调谐质量阻尼器(SD-TMD)新模型策略的性能评价

利用导出的设置基于刚度-阻尼器调谐质量阻尼器(SD-TMD)结构和SD-TMD的传递函数,建立了SD-TMD结构系统的动力放大系数。于是,SD-TMD最优参数与有效性的评价准则为:设置SD-TMD结构最大动力放大系数中最小值的最小化。而SD-TMD冲程的评价准则为:SD-TMD动力放大系数的最大值。基于上述的两个评价准则,研究了刚度比R对SD-TMD性能(最优参数、有效性和冲程)的影响。为比较,同时考虑了传统TMD(即R=0的SD-TMD)的数值结果。

温度相关型结构地震风险评估方法

采用形状记忆合金(SMA)、粘弹性橡胶等材料的结构,其地震响应存在温度相关性,对其结构性能的评估应考虑温度影响和区域温度分布特性的不确定性。以第二代基于性能的地震工程评估框架为基础,该文提出一种考虑区域温度分布特性的温度相关型结构地震风险评估方法。该方法将传统地震易损性扩展为地震动强度-温度联合易损性,在此基础上得到包含温度分布信息的修正区域易损性,并用于评估结构地震风险。基于该方法,该文以9层SMA支撑钢框架结构作为分析对象,研究温度对结构性能的影响。选取北京和文昌为案例地区,给出其区域温度分布特性描述,并计算对象结构的地震风险曲线。结果表明:环境温度降低将影响结构变形分布。同时,结构在低温下更易发生倒塌。相对于位于文昌和设计基准温度下的对象结构,位于北京的对象结构具有更高的倒塌风险。所提出的方法能够量化评估不同地区温度相关型结构的地震风险。

表现性评价在商务英语翻转课堂中的应用研究

商务英语是一门常见的ESP课程,但在课程教学设计上仍存在评价手段不足、评价方式单一等问题。本文首先介绍表现性评价的概念和基本原则,然后提出在商务英语课程中实施表现性评价的方案,以期提升商务英语课程评估效果。

论学生综合素质评价在高中校本化实施中的偏离与匡正

高中学生综合素质评价校本化实施中的偏离现象,表现为评价实施的机械化、评价内容的“漂浮”、评价中存在应试倾向等,导致综合素质评价的育人价值并未充分实现。综合素质评价校本化实施应依据学校条件、优势及学生整体情况,设计具有学校特色的评价方案,将评价结果用于学校教育教学改进和学生发展,将学生发展中的不确定性转化为可能性与动力。高中学校应贯彻学生综合素质培养—评价一体化原则,注重在学校课程与活动中培养学生综合素质,并以表现性评价收集学生的过程性资料,同时还应加强对高中教师的相关专业培训和指导。

基于项目式学习的中学生海洋权益意识表现性评价

提高公众海洋权益意识是维护国家安全战略的现实需求,中学生海洋权益意识的培养面临学习方式与评价方式变革的挑战。在厘清海洋权益以及海洋权益意识内涵的基础上,以项目式学习与表现性评价为切入点,通过明确学段预期结果、细化项目评价规则来确定中学生海洋权益意识表现性评价水平;通过统整项目情境、内容、活动、成果四要素,设计海洋权益意识表现性项目任务。研究提出,项目式学习中实施海洋权益意识表现性评价的三项策略:树立大数据理念,嵌入项目式学习,注重思维外显化。

基于结构性能的大型贮液箱最优维护时机确定

为解决大型贮液箱存在的先验信息缺失、维修策略制定不合理等问题,该文提出一种基于结构性能的大型贮液箱最优维护时机确定方法。首先,利用维纳过程对贮液箱指标监测数据的未来变化趋势进行预测。其次,基于改进的置信规则库推理方法,构建贮液箱结构性能状态评估模型。然后,基于评估结果,在满足结构稳定性要求前提下,以单位时间内平均维护成本最小为目标,确定最优维护时机。最后,以50000 m^(3)的石油储罐为例,进行实验验证,说明所提方法的有效性。