检索结果-内蒙古大学图书馆

Predicting High-Impact Research in the construction engineering and Management Domain Using Computational Machine Learning

Predicting High-Impact Research in the Construction Engineer...

引用

ASCE International Conference on Computing in civil engineering 2023: Visualization, Information Modeling, and Simulation, i3CE 2023

作者： El-Adaway, Islam H. Ali, Gasser G. Ahmed, Muaz O. Eissa, Radwa Abdul Nabi, Mohamad Elbashbishy, Tamima Khalef, Ramy Hurst-McCarthy Professor of Construction Engineering and Management Prof. of Civ. Eng. and Founding Director of Missouri Consortium of Construction Innovation Dept. of Civ. Arch. and Environ. Eng. and Dept. of Engineering Management and Systems Engineering Missouri Univ. of Science and Technology RollaMO United States Dept. of Civil Engineering Univ. of Texas Rio Grande Valley EdinburgTX United States Dept. of Civil Engineering Missouri Univ. of Science and Technology RollaMO United States Dept. of Civil Architectural and Environmental Engineering Missouri Univ. of Science and Technology RollaMO United States

ISBN: (数字)9780784485231

ISBN: (纸本)9780784485231

construction engineering and management (CEM) domain covers multiple evolving sub-disciplines and directions. To understand those directions, numerous research efforts have conducted scientometric analysis of publications to explore their significance and impact. Despite their valuable insights, such research endeavors have been limited to exploratory analyses, whereas no previous attempt has been conducted to predict the future impact of research in CEM. This study fills this knowledge gap by performing a predictive analysis of citation metrics of publications in CEM using machine learning (ML). The developed model was trained on a dataset of 93,868 publications using an XGBoost algorithm. Testing showed that the model could predict high-impact research after 5 years from publication with an accuracy of 80.71%. Further analysis of the predicted model results identified "project planning and design," "organizational issues," and "information technologies, robotics, and automation" as the top forecasted CEM research subdisciplines that are anticipated to attract high citation counts. Ultimately, this research contributes to the CEM body of knowledge with a framework that can predict future citation trends, which can help guide researchers and stakeholders in academia identify research and funding opportunities. © 2024 Computing in civil engineering 2023: Visualization, Information Modeling, and Simulation - Selected Papers from the ASCE International Conference on Computing in civil engineering 2023. All rights reserved.

关键词： Machine learning

来源：评论

学校读者我要写书评

暂无评论

Structural Health Monitoring of Cable Stays in Power Distribution Networks

引用

Procedia Structural Integrity 2024年 64卷 523-530页

作者： Pat Rajeev Sahan Bandara Saman Fernando Emad Gad Department of Civil & Construction Engineering Swinburne University of Technology Melbourne VIC 3122 Australia Department of Civil Engineering University of Peradeniya Peradeniya 20400 Sri Lanka

Cable stays are widely used in power distribution and telecommunication sectors to support utility poles. A cable stay consists of a steel cable and rod system that ties the pole to the ground to provide lateral stability. The cable is normally tied to the pole using a number of different details and the other end it is tied to a rod which is embedded into the ground. As a steel structure where a part is buried under the ground, corrosion is inevitable. Corrosion degrades the structural capacity of cable stays over time by reducing the effective cross-sectional area in carrying the load. Failure of cable stays can lead to utility pole failures which can pose significant economic impacts and safety concerns. Therefore, reliable and accurate condition assessment of cable stays is crucial for safe and reliable performance of power distibution and telecommnication networks. This paper investigates the ground level and below ground corrosion of cable stays. 25 in-service cable stays in Victoria, Australia are uprooted to conduct corrosion assessment and the results of corrosion assessment are presented in this paper. Conclusions are drawn based on the results to improve the condition assessment techniques and to facilitate the asset management team in planning the replacement and strengthening schedule for cable stays.

关键词： Cable stays Corrosion Deterioration Condition assessment

来源：评论

学校读者我要写书评

暂无评论

Organisational elements controlling labour efficiency in building construction operations – a construction supervisors' perspective

International Journal of Industrial Engineering and Operatio...

引用

International Journal of Industrial engineering and Operations Management 2023年第1期5卷 54-73页

作者： Manoharan, Kesavan Dissanayake, Pujitha Pathirana, Chintha Deegahawature, Dharsana Silva, Renuka Department of Civil Engineering Faculty of Engineering University of Peradeniya Peradeniya Sri Lanka Department of Construction Technology Wayamba University of Sri Lanka Kuliyapitiya Sri Lanka Wayamba University of Sri Lanka Kuliyapitiya Sri Lanka

Purpose: Labour efficiency is the key component for the long-term sustainability of construction firms. Recent studies show that modernising organisational/managerial processes is necessary to raise labour efficiency in many emerging nations. construction supervision is a crucial element in organisational/managerial practices, which provide blood circulation to the project operations by directing labour. Accordingly, this study aims to quantify the impacts of crucial organisational/managerial elements on the efficiency of labour in building construction projects based on the viewpoint of construction supervisors. Findings: A total of 28 factors were determined as critical, where lack of labour motivation, poor labour training facilities, poor performance evaluation practices, no labour rewarding mechanism and poor communication/cooperation between parties were judged to be the top five key issues in the list. The validity and reliability of the study findings were ensured through statistical tests and the experts' discussion outcomes. In view of the evolving challenges facing the industry, the results indicate that the organisational policies of construction enterprises in place addressing financial procedures, communication strategies, resource management and performance management practices must be enhanced. Research limitations/implications: The study findings will make a substantial contribution to reducing the disparity between organisation/management policies and labour practices towards changing how the sector operates to increase labour efficiency in construction projects. Originality/value: This study contributes to addressing the knowledge gap in the industry associated with the organisational protocols, especially to understand/predict how such elements are significant, how much they influence the efficiency of construction practices and what steps can be made to limit their effects on labour efficiency in construction. These could be crucial in modernisi

关键词： construction industry construction supervisors Developing countries Labour efficiency Organisational management Productivity improvement

来源：评论

学校读者我要写书评

暂无评论

A Discussion on Utilization of Zinc Anode Applied in Cross-section Repair of RC Member Damaged by Chloride Attack - Time-Lag Application of Different Zinc Anodes

引用

Zairyo/Journal of the Society of Materials Science, Japan 2023年第4期72卷 273-279页

作者： Hamada, Hidenori Yamamoto, Daisuke Astuti, Pinta Rafdinal, Rafmita Sari Faculty of Engineering Kyushu University Motooka Nishi-ku Fukuoka819-0395 Japan Department of Civil and Environmental Engineering National Institute of Technology Oita College Maki Oita870-0152 Japan Department of Civil Engineering Universitas Muhammadiyah Yogyakarta Tamantirto Bantul DIY Kasihan555-183 Indonesia Maintenance Engineering Group P.S. Mitsubishi Construction Co. Ltd. Harumi Chuo-Ku Tokyo104-8215 Japan

This paper discusses the effectiveness of zinc anode cathodic protection applied to RC beam specimens severely damaged by chloride attack. Based on the experiment, that is, the zinc anode cathodic protection is applied to the 41-year-old RC beam specimens exposed to natural marine environments, suitable application method of zinc anode is discussed. In the experiment, repair was performed in three stages. In the first stage, polymer-modified mortar was cast to replace existing concrete in the middle tensile part with zinc anodes embedded in the repair mortar. After protective current became stable value, the anodes were disconnected from steel bars for a year defined as the second stage. During the one year of second stage, the steel bar in the repair area remained be passive state, without any sign of corrosion. As for the third stage, additional zinc anodes were installed in the existing concrete part in order to protect the steel in old chloride contaminated concrete. From one-year observation after the application of zinc anodes in old concrete part, it is confirmed that "time lag application" could stop the corrosion of steel bar in both parts. © 2023 The Society of Materials Science, Japan.

关键词： Repair

来源：评论

学校读者我要写书评

暂无评论

Development of a pressure coring system for the investigation of deep underground exploration

引用

International Journal of Mining Science and technology 2023年第11期33卷 1351-1364页

作者： Da Guo Ling Chen Zhongya Zhou Dingming Wang Yiwei Zhang Xun Yang Xin Fang Xiaojun Wang Heping Lu Lin Dai Heping Xie State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Sichuan UniversityChengdu 610065China School of Mechanical Engineering Sichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green EnergyCollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China Petroleum Engineering Technology Research Institute of Sinopec Jianghan Oilfield Company Wuhan 430035China

To provide a more accurate evaluation of the scale of deep underground resources,a new pressure coring system was carefully developed and its strength and safety of the engineering were verified by theoretical analyses and numerical *** designed pressure coring system can obtain cores with length of 3 m and diameter of 50 mm at 70 *** results of the ball-drop operation experiment demonstrate that differential motion assembly can effectively cut a safety pin by applying a tensile force of 4852 N,and it can lift the core tube through the center pole to complete a series of mechanical actions to seal the ***,by maintaining pressures at 70 MPa for 30 min,the pressure sealing capacity of the system was ***,a core sample with a diameter of 50 mm was obtained through a core drilling experiment and the coring performance of the pressure coring system was *** study can not only enrich the existing onshore coring technology but also provide a theoretical guide and design criteria for the development of similar pressure coring systems to meet the demand for deeper underground exploration.

关键词： Underground exploration In-situ coring Pressure coring Oil and gas production

来源：评论

学校读者我要写书评

暂无评论

Catalytic performance of Nb2O5 modified Ru/CeO2 for dichloromethane oxidation

引用

Progress in Natural Science:Materials International 2023年第4期33卷 486-494页

作者： Wencheng Hao Zhiwei Wang Shaohua Xie Lu Wei Zhiquan Hou Yuxi Liu Hongxing Dai Jiguang Deng Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution Control Faculty of Environment and Life Beijing University of Technology Department of Civil Environmental and Construction Engineering Catalysis Cluster for Renewable Energy and Chemical Transformations(REACT) Nano Science Technology Center(NSTC) University of Central Florida

1 wt% Ru/5 wt% Nb2O5/CeO2（RuNbCe） catalyst was synthesized via the incipient wetness impregnation method, and measured for the catalytic oxidation of dichloromethane（DCM）. The physicochemical properties of catalysts were determined used various characterization techniques. Compared with 1 wt% Ru/CeO2, 5 wt%Nb2O5/CeO2, CeO2, 1 wt% Ru/xNb2O5/CeO2（x = 1 wt%, 2 wt%, and 3 wt%） and 1 wt% Ru/yMO_n/CeO2（M =Co, Cr, Fe, Mg, Cu; y = 5 wt%）, the addition of 5 wt% Nb2O5obviously improved the catalytic performance of 1 wt% Ru/CeO2, with the T90%and apparent activation energy（Ea） being 287℃ and 43.5 kJ/mol, respectively, and less formation of polychlorinated byproducts at space velocity（SV） = 15,000 mL g-1h-1. The RuNbCe catalyst showed good thermal and hydrothermal stability, as well as HCl-resistance performance. We deduced that the higher oxidation performance of the RuNbCe catalyst may be attributed to the suitable acidic sites, good redox capacity, high surface adsorbed oxygen species concentration, and the strong interaction among Ru, Nb2O5and CeO2. The RuNbCe catalyst has the potential to be applied for the elimination of chlorinated volatile organic compounds（CVOCs）.

关键词： Ru/Nb2O5/CeO2 dichloromethane oxidation Catalytic stability Acidic sites CVOCs removal

来源：评论

学校读者我要写书评

暂无评论

Statistical review of literature sources on carbon emissions during the CSPB based on knowledge graphs 69

Statistical review of literature sources on carbon emissions...

引用

69th International Conference on Vibroengineering

作者： Yao, Gang Li, Rui Yang, Yang Cai, Xiaodong Zhou, Yan Ma, Xinlong Wang, Dawu Qu, Hao School of Civil Engineering Key Laboratory of New Technology for Construction of Cities in Mountain Area Chongqing University Chongqing400045 China Chongqing Railway Group Chongqing400045 China

The construction industry, a significant contributor to global carbon emissions, is pivotal in implementing carbon reduction strategies. This study delves into the carbon emissions associated with the construction stage of prefabricated buildings (CSPB), a burgeoning field of research. Utilizing the CiteSpace knowledge graph visualization software, we comprehensively analyzed literature from the Web of Science (WoS) database. Our study encompasses several vital dimensions: academic paper publication volume, keyword co-occurrence network, keyword co-occurrence network clustering, and citation burst visualization and analysis. The findings indicate that the topic of carbon emissions in prefabricated building construction is gaining increasing attention globally. Over the past decade, related literature has surged by an average annual growth rate of 41.42 %. Key research themes have emerged around the quantification of carbon emissions, construction methodologies, influencing factors, mitigation strategies, the use of prefabricated components, and predictive studies on emissions. These insights underscore the evolving focus and critical importance of this field in global sustainability efforts. © 2024 Gang Yao, et al.

关键词： Carbon capture and utilization

来源：评论

学校读者我要写书评

暂无评论

A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness matrix and domain reduction methods

引用

Frontiers of Structural and civil engineering 2023年第1期17卷 10-24页

作者： Yusheng YANG Haitao YU Yong YUAN Dechun LU Qiangbing HUANG Department of Geotechnical Engineering Tongji UniversityShanghai 200092China Shanghai Construction No.4(Group)Co. Ltd.Shanghai 201103China Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of Education Chang’an UniversityXi’an 710054China State Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing 100124China

A numerical framework was proposed for the seismic analysis of underground structures in layered ground under inclined P-SV *** free-field responses are first obtained using the stiffness matrix method based on plane-wave ***,the domain reduction method was employed to reproduce the wavefield in the numerical model of the soil–structure *** proposed numerical framework was verified by providing comparisons with analytical solutions for cases involving free-field responses of homogeneous ground,layered ground,and pressure-dependent heterogeneous ground,as well as for an example of a soil–structure interaction *** with the viscous and viscous-spring boundary methods adopted in previous studies,the proposed framework exhibits the advantage of incorporating oblique incident waves in a nonlinear heterogeneous *** results show that SV-waves are more destructive to underground structures than P-waves,and the responses of underground structures are significantly affected by the incident angles.

关键词： underground structures seismic response stiffness matrix method domain reduction method P-SV waves

来源：评论

学校读者我要写书评

暂无评论

Worker Activity Classification Using Multimodal Data Fusion from Wearable Sensors 19th

Worker Activity Classification Using Multimodal Data Fusion ...

引用

19th International Conference on Computing in civil and Building engineering, ICCCBE 2022

作者： Tian, Chi Chen, Yunfeng Feng, Yiheng Zhang, Jiansong School of Construction Management Technology Purdue University West LafayetteIN47907 United States Lyles School of Civil Engineering Purdue University West LafayetteIN47907 United States

ISBN: (纸本)9783031353987

Accurate and automated classification of workers’ activities is critical for safety and performance monitoring of workers, especially in highly hazardous working conditions. Previous studies have explored automated worker activity classification using wearable sensors with a sole type of data (e.g., acceleration) in controlled lab environments. To further improve the accuracy of worker activity classification with wearable sensors, we collected multimodal data from workers that conduct highway maintenance activities such as crack sealing, and pothole patching, in an Indiana Department of Transportation (INDOT) facility. Several activities were identified through field videos, including crack sealing, transferring material and walking. Two datasets were developed based on the collected data with one containing acceleration data only and the other one fusing acceleration data with multimodal data including heart rate, electrodermal activity (EDA), and skin temperature. The K-nearest neighbors (KNN) models were built to classify workers’ activities for the two datasets respectively. Results showed that the accuracies for detecting crack sealing, transferring material, and walking without the data fusion were 1.0, 1.0 and 0.71. With the data fusion, the accuracies for detecting crack sealing, transferring material, and walking became 1.0, 0.93, and 0.93. The overall accuracy for classifying the three activities increased from 0.9069 to 0.9535 with the data fusion. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Wearable sensors

来源：评论

学校读者我要写书评

暂无评论

Characterization of oxygen initiation process in the autothermic pyrolysis in-situ conversion of Huadian oil shale

引用

Petroleum Science 2024年第6期21卷 4481-4496页

作者： Shao-Tao Xu Xiao-Shu Lü Han Wang You-Hong Sun Shi-Jie Kang Zhen-Dong Wang Wei Guo Sun-Hua Deng School of Engineering and Technology China University of GeosciencesBeijing100083China College of Construction Engineering Jilin UniversityChangchun130021JilinChina National-Local Joint Engineering Laboratory of In-situ Conversion Drilling and Exploitation Technology for Oil ShaleJilin UniversityChangchun130021JilinChina Key Lab of Ministry of Natural Resources for Drilling and Exploitation Technology in Complex Conditions Jilin UniversityChangchun130021JilinChina Department of Electrical Engineering and Energy Technology University of VaasaP.O.Box 700FIN-65101VaasaFinland Department of Civil and Structural Engineering School of EngineeringAalto UniversityPO Box 12100FIN-02015EspooFinlan Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou341000JiangxiChina8.Key Laboratory of Coal Exploration and Comprehensive UtilizationMinistry of Nature and ResourcesShaanxi Coal Geology Group Co.Ltd.Xi'an710021ShaanxiChina

The oxygen initiation process,one of the key processes in the early stage of the autothermic pyrolysis insitu conversion technology,has not been deeply investigated,which seriously limits its *** this study,the reaction behaviors,kinetic parameters,heat and product release characteristics during the isothermal oxygen initiation process of Huadian oil shale in O2/N2mixtures with different oxygen concentrations and initiation temperatures were investigated via TG/*** results show that the samples exhibit three different reaction behaviors during the initiation stage,consisting of two main parts,i.e.,the oxidative weight-gain and the oxidative reaction *** former phase is mainly characterized by the oxygen addition reaction that produces oxidizing groups which increase the sample *** the latter stage consists of two main *** first subreaction involves the oxidative cracking and pyrolysis of oxidizing groups and kerogen to produce fuel deposits such as residual carbon,while the second subreaction focuses on the oxidation of the resulting ***,increasing the oxygen concentration significantly promotes the above reactions,leading to an increase in the reaction intensity and reaction *** to the combined effect of oxygen concentration and residual organic matter content,the total heat release increases with the increasing initiation temperature and reaches its maximum at 330-370℃.In addition,the preheating stage primarily produces hydrocarbon gases,while the initiation stage predominantly generates CO_(2).As the preheating temperature increases,the CO_(2)output intensifies,the required reaction time shortens,and the release becomes more *** on these findings,a reaction mechanism for the oxygen initiation process of Huadian oil shale was proposed,and recommendations were provided for optimizing the construction process.

关键词： Oil shale Oxygen initiation process Isothermal kinetic analysis Heat release Product release characteristics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：