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Perceptions and Pedagogical Responses of construction Educators During COVID-19

International Journal of construction Education and Research 2023年第4期19卷 405-425页

作者： Langar, Sandeep Mosier, Rachel Adhikari, Sanjeev School of Civil and Environmental Engineering and Construction Management The University of Texas at San Antonio San Antonio TX United States Francis and Kathleen Rooney Construction Engineering Technology Program Oklahoma State University Stillwater OK United States Department of Construction Management Kennesaw State University Atlanta GA United States

COVID-19 impacted academia across the globe. Given the scale and sudden pandemic onset, limited empirical studies identify the transition’s impact on the US construction educators and education imparted. The study determined the pedagogical responses of educators associated with construction programs within the US during COVID-19 and tested six relationships in the areas of university support, technological access and infrastructure, and educator proficiency improvements. An online survey method was utilized with the instrument emailed to nearly 1,883 educators associated with construction programs/departments across the US. The study used 163 complete responses from US educators based on predefined parameters and identified the baseline operational paradigm (pre-COVID) for construction educators and programs across the US. The study determined the changes after the transition and investigated the impacts of the transition on faculty proficiency with online teaching, existing technological infrastructure, and communication with students. The study identified a moderate relationship between the University’s level of support and educators’ experiences in developing and delivering online materials during the transition. A moderate relationship was also identified between proficiency with online content delivery and total teaching experience. Finally, only a few respondents felt construction education could be delivered entirely online, based on their experiences. © 2022 Associated Schools of construction.

关键词： construction educators COVID-19 impacts on academia online education pedagogical responses to COVID-19

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Concurrent Delay Analysis via Cooperative Game Theory

Concurrent Delay Analysis via Cooperative Game Theory

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construction Research Congress 2024, CRC 2024

作者： Hajiashrafi, Fatemeh Huynh, Huu T. Lucko, Gunnar Eid, Mohamed S. Construction Engineering and Management Program Dept. of Civil and Environmental Engineering Catholic Univ. of America WashingtonDC United States Dept. of Civil and Environmental Engineering Catholic Univ. of America WashingtonDC United States Dept. of Construction and Building Engineering College of Engineering and Technology Arab Academy for Science Technology and Maritime Transport Cairo Egypt

ISBN: (数字)9780784485286

ISBN: (纸本)9780784485286

Despite various attempts throughout past decades to deal with concurrent delays in construction project schedules, they continue to be a vexing issue that has eluded an unambiguous solution. Prior studies have resorted to the prime contract, which only binds general contractor and owner, cannot be proven to be fair, and may even be biased. Therefore, this paper adopts a concept from cooperative game theory, the Shapley value, which apportions profits (which project participants seek to maximize). Creatively applying it to liquidated damages (which they seek to minimize), the model uses all participants' actual finish dates as input to gain percentage shares of liquidated damages as output. Analyzing all possible coalitions among participants and assigning weights comprehensively assesses their marginal contributions to the project finish date. This generalized view of participants explicitly includes subcontractors, whom prior approaches typically ignored. An example demonstrates how the model also implies an early completion bonus. This yields compelling implications for real-world incentives that can be cast into future contract clauses. © ASCE.

关键词： Contractors

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Quantifying construction and Demolition Waste Using SLAM-Based Mobile Mapping System: A Case Study from Kafr El Sheikh, Egypt

Quantifying Construction and Demolition Waste Using SLAM-Bas...

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2021 International Conference on Data Analytics for Business and Industry, ICDABI 2021

作者： Attia, Tarek Elshaboury, Nehal Hesham, Amr Elhadary, Mohamed Construction and Project Management Research Institute Housing and Building National Research Centre Giza Egypt Construction Engineering Management Program Arab Academy for Science Technology Maritime Transport Giza Egypt

ISBN: (纸本)9781665416566

The quantities of construction and demolition waste (CDW) have significantly augmented due to rapid urbanization in Egyptian cities. This waste stream threatens public health and the environment. Quantifying waste is considered aCDW in Kafr El Sheikh Governorate, Egypt. The results show that the quantity of CDW in the study areas is estimated to be 19,174.071 cubic meters. The proposed methodology could be further extended in other Egyptian governorates facing the same challenges of data unavailability. This research provides the government bodies, policymakers, investors, demolition engineers, and researchers with reliable estimates of CDW quantities. © 2021 IEEE.

关键词： Demolition

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Decoding Efficiency in construction: A Behavioral DEA Approach to BRICS Economies

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IEEE Access 2024年 12卷 113165-113177页

作者： Yih-Tzoo Chen Thi-Hien Dao Nhat-Luong Nhieu Department of Construction Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan Ph.D. Program in Engineering Science and Technology College of Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan Department of Industrial Engineering and Management National Kaohsiung University of Science and Technology Kaohsiung Taiwan

Amidst the rapidly evolving global economic landscape, the BRICS nations (Brazil, Russia, India, China, and South Africa) have emerged as pivotal players, particularly in the construction sector, which serves as a cornerstone for their continued growth and development. This sector’s performance not only reflects the economic health of these nations but also their capacity for sustainable urban and infrastructural expansion. This study aims to provide a comprehensive evaluative analysis of the construction industry’s efficiency across the BRICS nations using the Bounded Rationality Data Envelopment Analysis (BR-DEA) model, incorporating principles from Prospect Theory. Moreover, this study also investigates the relationship between behavioral economics and operational efficiency within this sector. According to well-known prospect theory, the psychological behavioral coefficients applied in the model include the loss aversion, the gain preference, the gain curvature, and the loss curvature coefficients. Key performance indicators for the model were meticulously chosen, normalized, and derived from reputable global and national databases. The findings revealed that efficiency scores generally increased with higher gain preference coefficients across different loss aversion settings, indicating that valuing gains more positively is associated with greater efficiency. Variations were observed among the BRICS countries, suggesting that efficiency is influenced by country-specific behavioral factors. This study contributes to the literature by integrating behavioral economics into efficiency analysis and offers practical insights for policymakers and industry leaders within the BRICS nations. Limitations are acknowledged, primarily relating to data availability and the inherent complexities of behavioral modeling, which provide avenues for future research to expand upon these initial findings.

关键词： Economics construction industry Economic indicators Industries Sustainable development Decision making Socioeconomics

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Beneficial Use of Dredged Material in Flowable Fill 4th

Beneficial Use of Dredged Material in Flowable Fill

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4th International Conference on Transportation Geotechnics, ICTG 2021

作者： Solanki, Pranshoo Lopez, Juan David Jain, Harshvardhan Jain, Bhupesh Construction Management Program Department of Technology Illinois State University NormalIL61790 United States Department of Technology Illinois State University NormalIL61790 United States Department of Civil Engineering Manipal University Jaipur Jaipur Rajasthan303007 India

ISBN: (纸本)9783030772291

US Army Corps of Engineers (USACE) annually dredge 300 million cubic yards nationwide to maintain channels’ navigation. Treating this huge amount of dredged material is a major challenge due to the mobilization of potential contaminants causing depreciation in water quality and depletion of valuable land. Rather than treating the dredged material as a waste, investigating alternative ways to recycle and reuse the dredged material is needed. Therefore, the aim of this study was to evaluate the feasibility of utilizing dredged material as a substitute for sand in flowable fill. A total of five mixtures were prepared by using different proportions of dredged material and virgin fine aggregates (sand) in flowable fill. Each mixture was tested for flowability and compressive strength. Both flow consistency and strength results were found within required specification for flowable fill. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Dredging

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The Challenges and Opportunities of Transitioning to Modular Smartphones

The Challenges and Opportunities of Transitioning to Modular...

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Conference on Technologies for Sustainability (Sustech)

作者： Kevin Lomax Jaap Donker Jonah Milnor Charles Pringle Susan Rivera Information Technology and Administrative Management Department Central Washington University Finance Accounting and Economics Departments Central Washington University Engineering Technologies Safety and Construction Department Central Washington University Professor MET Program Coordinator Engineering Technologies Safety and Construction Department Central Washington University Professor Information Technology and Administrative Management Department Central Washington University

ISBN: (数字)9798350394344

ISBN: (纸本)9798350394351

This paper proposes a perspective analysis of the barriers that inhibit the uptake of modular phones as well as feasible design and market opportunities. Electronic waste (e-waste) increases yearly, and precious materials are often improperly recycled. A few thought leaders have proposed modular electronics as a solution to reduce waste and harmful GHG emissions at all stages of the smartphone lifecycle. However, obstacles exist, such as planned obsolescence business strategies that tend to dominate the current market and technical challenges associated with sealing modular devices. To compete with existing smartphone products, such as iPhone and Samsung devices, the ingress protection ratings of the more repairable modular devices should be comparable. The paper will propose potential solutions to each of the identified obstacles.

关键词： Resistance Supply chains Electronic waste Sustainable development Protection Consumer electronics Commercialization

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Effect of mix proportions on the properties of clsm containing recycled glass 3rd

Effect of mix proportions on the properties of clsm containi...

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3rd European and Mediterranean Structural Engineering and construction Conference 2020, Euro-Med-Sec 2020

作者： Solanki, Pranshoo Construction Management Program Dept of Technology Illinois State University Normal United States

This research examined the effect of mix proportions namely, water to cementitious (w/c) ratio and glass content, on the flowability and compressive strength of controlled low-strength (CLSM) mixtures. A total of 20 mixes containing different proportions of cement, sand, class C fly ash, coarser glass, finer glass and water were prepared and tested. Results showed that both flowability and strength are dependent on w/c ratio and type and percent of glass content. Strength of mixes containing high volume of coarser glass was found more sensitive towards w/c ratio. Further strength was found to improve with increase in finer portion of the glass powder. Density was also found to correlate well with the moisture content of CLSM specimens. Specimens with lower moisture content produced denser CLSM structure. The results of this study would be useful in establishing mix proportions for CLSM incorporating recycled glass, fly ash, sand and cement for commercial applications. Copyright © 2020 ISEC *** right reserved.

关键词： Fly ash

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Modeling the Adoption of Green Stormwater Infrastructure Considering Cognitive Biases

SSRN

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SSRN 2023年

作者： Qi, Jingyi Barclay, Nicole Infrastructure and Environmental Systems Program University of North Carolina at Charlotte CharlotteNC28223 United States Department of Engineering Technology and Construction Management University of North Carolina at Charlotte CharlotteNC28223 United States

Many barriers obstruct green stormwater infrastructure (GSI) implementation, particularly in residential areas where it primarily relies on voluntary buy-in. Thus, it is necessary to determine the most effective mitigation strategies and raise attention to them. This paper considers cognitive biases in decision-making to quantitatively simulate their influence on GSI adoption behaviors in residential areas. The overall goal is to model the adoption of GSI measures in residential areas by incorporating the cognitive biases of residential-based adopters. The methods include agent-based modeling with the model framed by the theory of planned behavior. Data used in the model included survey data collected from participants who reside in the study area and values from the literature. The results show that cognitive biases, when both status quo and loss aversion biases are present, could significantly limit adoption, especially when the initial adopters are sparse. Overall, the main contribution of this work is to provide insights into how cognitive biases may impact long-term GSI implementation planning. © 2023, The Authors. All rights reserved.

关键词： Decision making

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SUSTAINABLE USE OF WASTE GLASS IN PAVEMENT SYSTEMS- REVIEW, LIMITATIONS AND POTENTIAL APPLICATION

Journal of Solid Waste Technology and Management

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Journal of Solid Waste technology and management 2021年第2期47卷 235-251页

作者： Solanki, Pranshoo Sancheti, Gaurav Singh, Saurabh Construction Management Program Department of Technology College of Applied Science and Technology Illinois State University Campus Box 5100 NormalIL61790 United States Department of Civil Engineering Manipal University Jaipur Dehmi Kalan Rajasthan Jaipur303007 India Department of Marketing and Entrepreneurship College of Business Administration Kent State University KentOH44240 United States

Transportation sector due to increased pavement lengths is one of main sources of greenhouse gas emissions and energy consumption. With increased environmental awareness and focus on recycling, many studies used recycled material in pavement systems to implement the sustainability. The recycling of waste glass in pavement systems has attracted much interest worldwide due to increased disposal costs. As a pavement material, waste glass could be used as an aggregate substitute in Portland cement concrete, asphalt mixtures and base/sub-base courses. When finely ground, glass can also be used as supplementary cementitious material for substituting partial cement. This paper reviews the different uses of waste glass in pavement systems and the effect of the glass properties on the performance of pavement materials. This review compared the test results reported by different researchers and discusses limitations of using recycled glass in pavement systems along with potential applications. Further, many aspects of the local markets were found to be supportive of diverting recycled glass to concrete products, however, the cost of glass milling and the limited use of concrete products containing glass locally make such diversion uneconomical at the present time. The findings from this review study are expected to advance knowledge in recycling waste glass in pavement systems and offer an effective technique for diverting a large amount of waste glass from landfills. © 2021 Widener University School of Civil Engineering. All rights reserved.

关键词： Glass

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Massive plywood panels and manufacturers: a comprehensive systematic literature review and case study

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Discover Civil Engineering 2025年第1期2卷 1-24页

作者： De Araujo, Victor Alves, Larissa Jardim, Pedro Švajlenka, Jozef Christoforo, André Post-Graduation Program in Civil Engineering São Paulo State University Ilha Solteira Brazil Department of Civil Engineering Federal University of São Carlos São Carlos Brazil Department of Civil Engineering Federal University of Rondônia Porto Velho Brazil Department of Construction Technology Economy and Management Technical University of Košice Košice Slovakia

Massive timber is a category of heavy green engineered products, manufactured from glued or glued-free processes, to be used in more predictable structural performance in industrialized walls, floors and frames. Massive plywood panel emerges as a novelty for mass timber construction and, therefore, little information is scientifically available. Aligning with the Sustainable Development Goal 9: ‘Industry, innovation and infrastructures’, this study aims to verify this literature gap and raise topics regarding massive plywood panels using a structured systematic review literature. From bibliometric analysis, 12 journal papers, 10 conference papers and an editorial were prospected using Scopus and Web of Science databases. A predominance of studies from English language nations was confirmed. Seismic and monotonic performance of massive plywood are frequent topics in these investigations, whose results have indicated a promising scenario for construction. As no study on industry is available, a case study on massive plywood was sequentially developed to discuss features of commercial panels and perspectives of respective global industry. The North American Freres Engineered Wood and Finnish Metsä Wood are the only active manufacturers, and their massive plywood panels have been manufactured from modern production technologies and environmentally certified practices to be applied in low- and high-rise industrialized buildings.

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