Journal of Engineering Management and Systems Engineering最新文献_第2页

Analysis and regulation of mechatronic systems in advanced mobile machines 先进移动机械中机电系统的分析与调节

Journal of Engineering Management and Systems Engineering Pub Date : 2023-09-01 DOI: 10.56578/jemse020301

V. Jovanović, D. Janošević

引用次数: 0

Mitigating Construction Delays in Iran: An Empirical Evaluation of Building Information Modeling and Integrated Project Delivery 缓解伊朗建设延误:建筑信息模型与综合项目交付的实证评估

Journal of Engineering Management and Systems Engineering Pub Date : 2023-09-01 DOI: 10.56578/jemse/020304

Milad Ghanbari, Dina Zolfaghari, Zohreh Yadegari

{"title":"Mitigating Construction Delays in Iran: An Empirical Evaluation of Building Information Modeling and Integrated Project Delivery","authors":"Milad Ghanbari, Dina Zolfaghari, Zohreh Yadegari","doi":"10.56578/jemse/020304","DOIUrl":"https://doi.org/10.56578/jemse/020304","url":null,"abstract":"Project delays pose a substantial challenge in the construction sector. The primary objective of this research is to discern the root causes of project delays in the construction industry and proffer potential solutions, inclusive of the application of building information modeling (BIM) and integrated project delivery (IPD). The integration of IPD and BIM, predicated upon established blueprints, was explored to streamline cost management processes and investigate the potential incorporation of design information within the framework of building price lists. A comprehensive review of extant literature identified 20 possible causes of delays in Iranian construction projects. This study employed a descriptive research design, analyzing data collected from 90 questionnaires completed by construction experts using the statistical package for the social sciences (SPSS) statistical software. A case study of the Dehloran Azad University building project was undertaken, utilizing Revit software for simulation exercises. Field investigations, coupled with a questionnaire disseminated among construction consultants and contractors, elucidated four primary factors contributing to project delays in Iran: 1) the employer's failure to fulfill financial obligations; 2) disregard for the socio-political-economic conditions; 3) absence of a feasibility study prior to tender participation; and 4) inadequate interdepartmental communication. Successful project execution hinges on active team participation and the value that such teamwork brings. The implementation of the IPD model was found to encourage increased enthusiasm and participation. Given that the most significant source of delays in Iran's construction projects was identified as financial issues, the adoption of BIM/IPD may mitigate delays and risks associated with inaccurate estimates. This approach was also found to be effective in projects that are in mid-stage completion.","PeriodicalId":233391,"journal":{"name":"Journal of Engineering Management and Systems Engineering","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135048869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical and Experimental Evaluation of the Mechanical Behavior of FRP-Strengthened Solid and Glulam Timber Beams frp加固实心胶合木梁力学性能的数值与试验评价

Journal of Engineering Management and Systems Engineering Pub Date : 2023-09-01 DOI: 10.56578/jemse020303

Şemsettin Kilinçarslan, Yasemin Şimşek Türker, Mehmet Avcar

{"title":"Numerical and Experimental Evaluation of the Mechanical Behavior of FRP-Strengthened Solid and Glulam Timber Beams","authors":"Şemsettin Kilinçarslan, Yasemin Şimşek Türker, Mehmet Avcar","doi":"10.56578/jemse020303","DOIUrl":"https://doi.org/10.56578/jemse020303","url":null,"abstract":"Wood, notably in the forms of sawn lumber and glued laminated (glulam) timber, serves as a prevalent structural material for lightweight constructions and bridges with short spans. Over time, timber structures might experience deterioration due to factors such as biological attack, ageing, and escalated service loads. In such cases, reinforcing or repairing the compromised timber components can often be more economical than full replacement. Fiber-reinforced polymer (FRP) composites, particularly those strengthened using carbon fiber, present significant potential in enhancing the stiffness or load-carrying capacity of these timber systems. In the present investigation, the bending behavior of both solid and glulam beams, reinforced with carbon FRP composites in a \"U\" shape at the bottom layer, was studied experimentally and numerically. It was observed that reinforced glulam beams exhibit superior load-carrying capacity, displacement, modulus of rupture, and modulus of elasticity as compared to their unreinforced solid beam counterparts. Even though both types of beams are fabricated from identical materials, the laminated beams demonstrated markedly enhanced bending characteristics. Moreover, the addition of reinforcement to glulam beams showed a substantial improvement in bending performance. Consistency between numerical simulations, conducted using a finite element analysis program, and experimental outcomes was noted. This research suggests that timber materials, when strengthened with fiber-augmented polymer fabrics, can be accurately represented using numerical tools.","PeriodicalId":233391,"journal":{"name":"Journal of Engineering Management and Systems Engineering","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135098767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geometrical Precision and Surface Topography of mSLA-Produced Surgical Guides for the Knee Joint msla制造的膝关节手术导板的几何精度和表面形貌

Journal of Engineering Management and Systems Engineering Pub Date : 2023-09-01 DOI: 10.56578/jemse020302

Paweł Turek, Jakub Jakubiec

引用次数: 0

Evaluating the Concentration and Leachability of Heavy Metals in Electric Arc Furnace Dust: Implications for Environmental Management 评价电弧炉粉尘中重金属的浓度和浸出性:对环境管理的启示

Journal of Engineering Management and Systems Engineering Pub Date : 2023-06-30 DOI: 10.56578/jemse020203

M. Saadati, Zeinab Hosseinzadeh, Abbas-Ali Zamani, Ehsan Ashabi

{"title":"Evaluating the Concentration and Leachability of Heavy Metals in Electric Arc Furnace Dust: Implications for Environmental Management","authors":"M. Saadati, Zeinab Hosseinzadeh, Abbas-Ali Zamani, Ehsan Ashabi","doi":"10.56578/jemse020203","DOIUrl":"https://doi.org/10.56578/jemse020203","url":null,"abstract":"With the expansion of steel production via electric arc furnaces, an increase in dust generation—a by-product of these operations—poses substantial challenges. These difficulties stem from land use restrictions for large-scale dust waste storage and the environmental implications of heavy metal contamination inherent in the dust. In an effort to promote the repurposing of this potentially hazardous solid waste, this study examines the concentration and leachability of various heavy metals in this dust. Digestion of the dust samples was carried out in a controlled laboratory setting, after which the concentrations of iron (Fe), magnesium (Mg), zinc (Zn), manganese (Mn), nickel (Ni), lead (Pb), cadmium (Cd), and cobalt (Co) were determined using flame atomic absorption spectrometry. The mean concentrations of these heavy metals in the dust were found to be in the following descending order (in mg/kg): Fe> Mg> Zn> Mn> Ni> Pb> Cu> Cd> Co. Water leaching tests were subsequently conducted, revealing that Co and Cd exhibited the greatest leachability at varying pH levels. Conversely, Fe and Ni displayed minimal leachability. These findings have significant implications for the reuse and environmental management of electric arc furnace dust.","PeriodicalId":233391,"journal":{"name":"Journal of Engineering Management and Systems Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122003295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precision Analysis of Chain Wheel Geometry Reconstruction Based on Contact and Optical Measurement Data 基于接触和光学测量数据的链轮几何重构精度分析

Journal of Engineering Management and Systems Engineering Pub Date : 2023-06-21 DOI: 10.56578/jemse020202

P. Turek, Jakub Jędras

引用次数: 0

Examining the Role of Empowerment Criteria on Employee Performance: A Quantitative Analysis in the Oil Industry 考察授权标准对员工绩效的作用:石油行业的定量分析

Journal of Engineering Management and Systems Engineering Pub Date : 2023-06-21 DOI: 10.56578/jemse020201

M. Gharib, N. Jamali, Sajjad Nikkhah Chamanabad, M. Goharimanesh

引用次数: 0

Adaptive Neuro-Fuzzy Optimization for Enhanced Precision in Laser Micro-Machining Operations 提高激光微加工精度的自适应神经模糊优化

Journal of Engineering Management and Systems Engineering Pub Date : 2023-06-21 DOI: 10.56578/jemse020205

S. Troha, Milos Milovancevic, A. Dimov

引用次数: 0

The Impact of the COVID-19 Pandemic on Software Business Enterprises in Pakistan: Analysis and Implications 新冠肺炎疫情对巴基斯坦软件商业企业的影响:分析与启示

Journal of Engineering Management and Systems Engineering Pub Date : 2023-06-21 DOI: 10.56578/jemse020204

S. Haroon, Q. Zeeshan

引用次数: 0

Applications of Machine Learning in Aircraft Maintenance 机器学习在飞机维修中的应用

Journal of Engineering Management and Systems Engineering Pub Date : 2023-03-30 DOI: 10.56578/jemse020105

Umur Karaoğlu, Osinachi Mbah, Q. Zeeshan

引用次数: 2