Application of system dynamics for assessment of sustainable performance of construction projects

Sustainable performance is expected to become a major factor when examining the feasibility of a construction project in terms of its life cycle performance. The study on which this paper is based developed a simulation model, using system dy- namics methodology, to assess the sustainable performance of projects. Three major factors are used to examine project sus- tainable performance (PSP): the sustainability of economic development (E), the sustainability of social development (S), and the sustainability of environmental development (En). Sustainable development ability (SDA) was used as a prototype to evaluate the degree of sustainable performance. The simulation software ‘ithink’ was used to help with the application of the model to a real life case. This paper explains and demonstrates the procedures used to develop the model and finally offers an approach for assessing the feasibility of a construction project in terms of its sustainable performance.

Traffic Impact on Incentive Contracting Project Time Performance during Highway Construction

The volume of highway traffic in the United States continues to increase. In the face of this there is a concomitant need to improve and repair transportation infrastructure. Construction frequently requires a reduction in capacity during construction activity; consequently road users as well as adjacent businesses must endure the delays and inconveniences associated with transportation construction. Recognizing the problems that construction can produce, state highway agencies （SHAs） have continually sought ways to minimize the negative impact from their construction operations. Incentive contracting has played an important role in this effort to improve project performance. The Florida Department of Transportation （FDOT） is one of the leading SHAs using such innovative contracting methods as Incentive/Disincentive （I/D）, A＋B （cost plus time bidding） combined with I/D, No Excuse Bonus, and Liquidated Savings. This paper analyzes the traffic impact on incentive project time performance using highway construction projects recently completed in Florida. Project data obtained from FDOT were evaluated using time performance indices. A survey of traffic impact on project work types was performed in Florida in order to evaluate the relationship between construction project types and road traffic influence during construction. Based on the survey results, the 38 most frequently used work types in Florida during the study period were categorized into three traffic impact levels： （1） high traffic impact, （2） medium traffic impact, and （3） low traffic impact. Statistical analysis was performed. The results show that there are significant differences on project time performance between low and high impact levels as well as low and medium impact levels.

The Impact of State Policies on Investment Project Management in Polish Industrial Construction Sector

In this paper,we discuss the influence of economic,environmental and legal policies of the state on the management of investment projects in the area of industrial construction in Poland.Our empirical study relies on conducting a questionnaire survey.A total of 158 Polish companies dealing with industrial construction took part in the survey.Then,the collected questionnaires were subjected to a thorough analysis and interpretation,with the use of a method called the exploratory factor analysis(EFA).Our research reveals the key factors influencing successful investment project management in the Polish industrial construction sector.These factors have been identified as the“availability of technology in a stable political system”,“stability of the economic and tax systems”,“stable social system policy,stability and transparency of the legal system”and a“well-targeted environmental policy”.A key conclusion that can be drawn from our study is that an efficient management of investment projects in the industrial construction industry is significantly influenced by properly shaped and stable economic,environmental,and legal policies of the state.

Perception-Based Assessment of the Factors Causing Delays in Construction Projects

Construction delay is a widespread issue in the construction industry of developing countries, and Nepal is no exception. These delays extend project durations and lead to cost overruns and disputes among stakeholders. To address this problem, this study aimed to identify and analyze the significant factors that contribute to construction project delays in Nepal. To gather data, a well-structured questionnaire was developed and administered to a sample of 100 participants, including contractors, consultants, and civil engineers. Various statistical tests were conducted to ensure the data’s integrity and consistency, such as reliability assessments and factor analyses. The findings of the study highlighted multiple factors contributing to delays in construction projects such as inadequate design, poor communication, and coordination among stakeholders, insufficient experience and planning by contractors, delays in material delivery and testing, labor-related problems including shortages and low qualifications, and external factors like regulatory changes and unforeseen circumstances. By identifying these major causes of construction project delays, this study presented insightful information that can contribute to the analysis and evaluation of project performance.

Predicting the Construction Quality of Projects by Using Hybrid Soft Computing Techniques

The construction phase of a project is a critical factor that significantly impacts its overall success.The construction environment is characterized by uncertainty and dynamism,involving nonlinear relationships among various factors that affect construction quality.This study utilized 987 construction inspection records from 1993 to 2022,obtained from the Taiwan residents Public Construction Management Information System(PCMIS),to determine the relationships between construction factors and quality.First,fuzzy logic was applied to calculate the weights of 499 defects,and 25 critical construction factors were selected based on these weight values.Next,a deep neural network was used to identify the relationship between the critical construction factors(input variables)and construction quality(output variable).Finally,the prediction model’s performance was evaluated to confirm the impact of these critical construction factors on project outcomes.This study employed an innovative hybrid soft computing technique,com-bining fuzzy logic and an artificial neural network,to effectively predict the relationship between critical construction factors and construction quality,achieving a model accuracy of 96.08%.Project managers can utilize the findings of this study to enhance project management practices and establish effective construction management strategies,thereby improving project construction quality.

建筑工程项目环境影响评价指标体系应用研究

建筑工程项目在促进城镇化进程的同时,其施工活动对环境造成了一定程度的影响和压力。科学合理的环境影响评价指标体系是确保工程环境友好的关键基础。现有指标体系存在指标选择不全面、权重分配不科学等问题。优化策略包括构建多层次综合指标体系、运用定量分析方法确定权重等。通过一系列完善措施,将极大提高评价的科学性、针对性和时效性,为工程项目的绿色环保施工提供技术支撑。

国有燃气企业KPI绩效考核指标体系构建与实施

文章主要阐述了燃气企业在国有经济背景下,如何通过建立以KPI(关键绩效指标)为基础的绩效考核体系,提高经营效率和竞争力。文章对燃气企业业绩考核现状进行了分析,指出了考核标准模糊、主观性强等问题,并对产生问题的原因进行了探讨。随后以KPI为基础,详细介绍了绩效考核体系的构建过程及实施策略,评估了KPI绩效系统的执行效果,并总结了其在组织绩效提升、员工激励和管理流程优化等方面的作用。

模块化组织形式对工程项目创新绩效的影响

随着建设工程项目的管理难度不断上升,加之建设工程项目在发包过程中项目各参建单位之间的组织架构呈现出模块化特性,从组织模块化的视角识别出建设工程项目组织形式在模块化程度方面的两个重要维度,包括界面设计规则和近似可分解,同时引入各参建单位的合作行为作为中介变量,基于196份问卷结果实证探究其对项目创新绩效的影响。结果表明:建设工程项目组织形式模块化程度对项目创新绩效有显著正向影响,各参建单位的合作行为在组织形式模块化程度与项目创新绩效之间起中介作用;在设计、采购和建造的工程总承包(EPC)模式下,各参建单位之间的工作分工更为明晰,参建单位之间的资源整合效率和协作情况也更为突出,较为符合高界面规则明确性和高近似可分解性的模块化组织形式,对项目创新绩效的提高作用更为明显。因此,在建设工程项目实施过程中不但要关注参建单位的合作行为,还要对项目组织形式进行优化。

“双高计划”建设绩效评价指标的实践研究——以广州番禺职业技术学院为例

教育部办公厅和财政部办公厅下发的关于开展中国特色高水平高职学校和专业建设计划中期绩效评价工作的通知,对中国特色高水平高职学校和专业建设计划中期绩效评价。广州番禺职业技术学院双高中期绩效评价的结果等级为优。绩效指标的设定是否合理影响到绩效评价的结果。广州番禺职业技术学院“双高计划”建设中期绩效评价工作的5个重点产出指标:打造技术技能人才培养高地、打造技术技能创新服务平台、打造高水平双师队伍、提升校企合作水平、提升国际化水平的数量和质量指标的取舍,对其他高职学校有一定的借鉴作用。

基于CMIP6气候模式的西南地区极端气候指数评估与预估

采用8个常用极端气候指数评估第六次国际耦合模式的相互比较计划模式(CMIP6)对中国西南地区1990—2014年极端气温与极端降水特征的模拟能力,并采用4个共享社会经济路径及代表性浓度路径(SSP-RCP)组合情景,预估2023—2100年该地区极端气候事件变化趋势.结果表明:①CMIP6大部分模式能模拟西南地区极端气温自西到东逐渐升高、在南部边缘极端降水较多的空间分布特征;极端气温比极端降水的模拟效果更好;②相比观测值,预估的2015—2022年西南地区极端高温偏低,极端低温偏高,极端降水指数偏低;③未来2023—2100年的4个情景下,极端高温、暖昼日数和极端低温均呈上升趋势,冷夜日数呈下降趋势,未来西南地区具有较大的概率出现高温事件,出现低温事件的可能性降低;降水强度、最大连续5 d降水量和强降水总量呈上升趋势,未来中国西南地区降水强度和降水量将增加.

高职院校预算绩效管理指标体系构建研究

随着我国对职业教育发展的大力推进,当前我国多数高职院校都面临着提高资金利用率和资源配置优化的问题,而为适应现代化高校制度改革趋势,预算绩效管理已经成为高职院校财务制度改革和管理改革的重点任务。本文将在全面预算绩效管理视角下,对高职院校预算绩效管理指标体系的构建进行深入探究,针对绩效管理系统性不足、事前绩效评估缺乏合理性、结果应用机制不完善、监控力度不够以及缺少信息化工具的应用等问题,以绩效为导向提出相应建议,希望为高职院校提升整体绩效评价水平提供理论参考。

Impacts of building information modeling(BIM) implementation on design and construction performance: a resource dependence theory perspective

Drawing on resource dependence theory, this paper develops and empirically tests a model for understanding how the implementation of building information modeling(BIM) in construction projects impacts the performance of different project participating organizations through improving their interorganizational collaboration capabilities. Based on two sets of survey data collected from designers and general contractors in BIMbased construction projects in China, the results from partial least squares analysis and bootstrapping mediation test provide clear evidence that BIM-enabled capabilities of information sharing and collaborative decision-making as a whole play a significant role in determining BIMenabled efficiency and effectiveness benefits for both designers and general contractors. The results further reveal that designers and general contractors benefit from project BIM implementation activities significantly nonequivalently, and that this non-equivalence closely relates to the different roles played by designers and general contractors in BIM-enabled interorganizational resource exchange processes. The findings validate the resource dependence theory perspective of BIM as a boundary spanning tool to manage interorganizational resource dependence in construction projects, and contribute todeepened understandings of how and why project participating organizations benefit differently from the implementation of interorganizational information technologies like BIM.

重大建设工程技术创新合作关系与风险防控能力研究

技术创新合作是破解重大建设工程难题的关键手段,但合作关系的建立和管理也带来了新风险。为有效降低技术创新合作风险,技术创新合作关系对风险防控能力的作用值得深入思考。基于“结构—行为—绩效”范式和风险管理理论,结合已有研究,构建“合作关系—合作行为—合作绩效—风险防控能力”的链式中介模型,采用问卷调查法得到235份有效样本,采用回归分析和中介效应分析进行假设检验。回归分析结果显示,合作关系、合作行为、合作绩效均对风险防控能力有显著正向影响,且影响程度依次减弱。良好的合作关系显著提高合作行为的执行效果,提升合作绩效,进而对风险防控能力产生积极影响。中介效应检验结果表明,合作行为、合作绩效在合作关系与风险防控能力之间起链式中介作用,合作关系不仅直接影响风险防控能力,还通过合作行为和合作绩效对风险防控能力产生间接影响。在此基础上,为提高重大建设工程技术创新合作能力,提出重视合作关系的建立与维护、强化合作行为的执行与管理、关注合作绩效的评估与提升及构建良好的风险防控机制等对策建议。研究揭示了重大建设工程技术创新合作主体通过合作路径影响风险防控能力的内在机理,为重大建设工程技术创新合作提供参考。

地下建筑工程防水材料的性能研究

针对地下建筑工程变形缝渗漏水的问题,分析了变形缝防水的现状,并采用了一种三组分改性高分子密封材料。对所提出材料的防水性能和防水构造截面进行了试验,并在试验的基础上对变形缝的防水构造和渗漏治理进行了设计。结果表明,在变形缝缝宽为32 mm和52 mm且腔内水压范围在0.1~0.4 MPa时,采用三组分改性高分子密封材料的变形缝都没有出现漏水情况,并且至少可以维持2 h,证明了该材料具有良好的防水性。

以绩效为导向的高职院校项目库建设路径研究——以X职业技术学院的项目库建设为例

随着高职教育改革的不断深化,经费投入持续增长,优化资金管理和提升投入产出效率成为高职院校面临的重要课题。文章聚焦高校预算项目库建设,探索以绩效为导向的建设路径。通过剖析当前高职院校项目库管理现状,详细阐述了绩效导向在项目库建设中的应用机制。以X职业技术学院为例,展示了前置绩效指标、分层管理、动态调整及智慧财务平台等项目库建设路径,为提升高职院校预算管理和教育质量提供了经验和参考。

数字化项目绩效指标体系研究

随着数字化转型的深入推进,关于数字化项目的绩效评价日益受到各方关注。本文以构建数字化项目绩效指标体系为出发点,系统阐述了数字化项目绩效评价的政策背景和相关研究进展,分析了绩效评价工作中指标体系的现状及存在的若干问题,分析不同应用场景下数字化项目绩效评价指标体系的构建方法,并以实现全面评估数字化项目的经济性、效率性和效益性为目标,提出并展示了涵盖项目决策、过程、产出、效益等多个维度、能够综合定性和定量的指标体系。

盾尾密封油脂防水密封性能评价指标的相关性分析

[目的]盾尾油脂的性能对盾尾防水密封效果有显著的影响。盾尾油脂的性能检测指标较多,但这些指标与盾尾防水性能的关系尚未阐明,需对油脂各检测指标与防水性能之间的关系展开研究。[方法]选取了4种典型的盾尾油脂材料,分别进行了泵送性试验、稠度试验及耐水压密封性试验,获取了4种油脂的泵送量、锥入深度、保压时间及防水失效压力等4个性能指标的测试数据。基于自主设计的盾尾防水性能试验装置,开展了盾尾油脂的防水性能试验。采用皮尔逊相关系数法,分析了这4个性能指标与防水性能的相关性。[结果及结论]具有长纤维的油脂可以抵抗一定的应力,且较好的保压性能。不同盾尾油脂的防水失效压力有较大差异,其防水失效压力在0.41~0.70 MPa之间,并不是所有盾尾油脂都能满足0.60 MPa的设计防水压力,在油脂选型时应对油脂的性能进行检测。锥入深度与耐水压密封性、锥入深度与防水失效压力之间均呈高度负相关。

垃圾处理PPP项目运营期绩效评价机制研究

随着大部分PPP项目进入实施期,如何对PPP项目的实施情况进行科学评价成为亟待解决的问题,一系列PPP项目绩效管理文件出台,要求项目必须进行定期绩效评价。考虑垃圾处理行业对运营服务的要求,文中将日常绩效考核评价与年度绩效评价相结合,形成完整的绩效评价体系,从项目产出、项目效果、项目管理三个方面入手,构建了三级绩效评价指标体系,并通过实例验证了绩效评价机制的有效性。

采供血机构国家重点专项绩效评价指标建立的研究

目的建立采供血机构国家重点专项绩效评价的指标,为采供血机构的重点专项绩效评价提供科学可靠的方法。方法通过文献回顾法和德尔菲专家咨询法,建立采供血机构国家重点专项绩效的评价指标。通过向专家发送指标调查问卷,使用层次分析法计算各个指标的权重。结果共建立3项一级评定指标,12项二级评定指标。预算编制、项目管理和项目产出3个一级指标的权重分别为0.301,0.267和0.432。结论通过构建采供血机构国家重点专项绩效指标,可对该过程进行可量化的科学评价。

河道治理PPP项目建设期绩效评价研究

河道治理工程具备建设周期长、投资大、公益性强等特点,因此,各级地方政府普遍采用政府与社会资本合作模式(PPP)。文中利用PSR模型和层次分析法,建立河道治理PPP项目建设期绩效评价体系,对建设阶段可能出现的问题进行量化处理,最后给出合理化建议。