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中国科学：技术科学 2024年第12期54卷 2392-2404页

作者：何正迎黄雨 AKIYAMA Mitsuyoshi 李垠柯郭桢 FRANGOPOL Dan M. 同济大学土木工程学院地下建筑与工程系上海200092 同济大学土木工程防灾减灾全国重点实验室上海200092 Department of Civil and Environmental Engineering School of Creative Science and EngineeringWaseda UniversityTokyo 1698555Japan Department of Civil and Environmental Engineering Engineering Research Center for Advanced Technology for Large Structural Systems(ATLSS Center)Lehigh UniversityBethlehem 18015USA

降雨诱发的群发性滑坡,往往导致多处路段交通中断和路网连通性受损,降低城市道路基础设施网络韧性.鉴于现阶段针对单体边坡的优化设计方法难以最大程度减轻其对路网的广泛影响并提升区域韧性,本文提出了一种基于路网连通可靠度的边坡韧... 详细信息

降雨诱发的群发性滑坡,往往导致多处路段交通中断和路网连通性受损,降低城市道路基础设施网络韧性.鉴于现阶段针对单体边坡的优化设计方法难以最大程度减轻其对路网的广泛影响并提升区域韧性,本文提出了一种基于路网连通可靠度的边坡韧性提升优化决策分析方法.首先,采用广义帕累托分布(generalized Pareto distribution,GPD)评估降雨灾害强度.接着,通过地质调查确定路网中脆弱边坡群位置,并基于边坡渗流-稳定性力学模型进行易损性评估.然后,考虑强降雨下边坡状态的空间相关性,并结合图论,通过蒙特卡罗方法计算路网连通可靠度.最后,基于边坡韧性提升后的路网连通可靠度对道路边坡进行重要度排序,在资源有限条件下,优先加固对路网连通可靠性影响大的脆弱边坡,以最大化区域路网连通性.将所提方法应用于浙江省丽水市易受降雨滑坡群影响的路网,验证了其有效性.结果表明:所提方法得到的最优边坡韧性提升策略显著提升了路网连通可靠度,为将基于可靠度的单体边坡设计转向关注区域功能性的边坡群韧性提升策略的研究范式奠定了基础.

关键词：降雨滑坡群边坡加固路网连通性蒙特卡罗模拟抗灾韧性

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Bibliometric Analysis of Renewable Energy Research and Industrial Assets in Poland and Slovakia 18th

Bibliometric Analysis of Renewable Energy Research and Indus...

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18th International Conference Current Issues of civil and environmental engineering Lviv - Košice – Rzeszów, CEE 2023

作者： Kut, Pawel Pietrucha-Urbanik, Katarzyna Zeleňáková, Martina Department of Heat Engineering and Air Conditioning Rzeszow University of Technology Al. Powstancow Warszawy 6 Rzeszow35-959 Poland Department of Water Supply and Sewerage Systems Rzeszow University of Technology Al. Powstancow Warszawy 6 Rzeszow35-959 Poland Department of Environmental Engineering Faculty of Civil Engineering Technical University of Kosice Kosice04200 Slovakia

ISBN: (纸本)9783031449543

Renewable energy sources, such as wind, solar, hydro, and geothermal, play an increasingly important role in the global energy mix. They offer a sustainable alternative to fossil fuels, reducing greenhouse gas emissions and contributing to the fight against climate change. The development and deployment of renewable energy technologies have been growing rapidly worldwide, driven by government policies, technological advancements, and decreasing costs. Despite their advantages, renewable energy sources still face challenges, such as intermittency, storage, and grid integration. However, with continued investment and innovation, renewable energy sources have the potential to become the dominant source of energy in the future. The article presents a bibliometric analysis of renewable energy sources research in Poland and Slovakia. The study was based on publications indexed in the Scopus database. The analysis covered the period from 1990 to 2023. The study investigated the research topics related to renewable energy sources and analysis the most cited publications written by authors from the analyzed countries. Bibliometric analysis demonstrates the growing interest in renewable energy sources research in Poland and Slovakia. However, there is still a need for further research in certain areas, such as energy storage, smart grid technologies, and the use of renewable energy in transport. The results of this study can serve as a valuable resource for policymakers, researchers, and other stake-holders interested in promoting the development and use of renewable energy sources. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Investments

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A Study on Damage Evaluation Method for Box Section Steel Columns Using Autoencoder 33rd

A Study on Damage Evaluation Method for Box Section Steel Co...

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33rd International Ocean and Polar engineering Conference, ISOPE 2023

作者： Fujisaku, Yusuke Naito, Hideki Kimoto, Tomoyuki Matsumura, Masahide Takeshima, Natsumi Okada, Seiji Ono, Kiyoshi Department of Civil and Environmental Engineering Graduate School of Engineering Tohoku University Miyagi Sendai Japan Department of Electrical and Electronic Engineering National Institute of Technology Oita College Oita Oita Japan Center for Water Cycle Marine Environment and Disaster Management Kumamoto University Kumamoto Kumamoto Japan LCB∙DX Division Re search and Development Department IHI Infrastructure Systems Co. Ltd Minato Tokyo Japan Department of Civil and Environmental Engineering Waseda University Shinjuku Tokyo Japan

ISBN: (纸本)9781880653807

A convolutional autoencoder (CAE)-based damage evaluation method that uses frequency response functions as features was studied. A compression test was conducted on a box-section steel column to introduce out-of-plane deformation, and vibration was excited in the loading steps. From measured vibrational characteristics, the CAE model was trained, and anomaly scores were obtained. The anomaly scores obtained from the area where local buckling has occurred increased with the progression of the loading test. It was concluded that the proposed method is useful to conduct damage evaluation and structural health monitoring on steel columns. © 2023 by the International Society of Offshore and Polar Engineers (ISOPE).

关键词： Convolution

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Optimizing Multi-Time Step Security-Constrained Optimal Power Flow for Large Power Grids

Optimizing Multi-Time Step Security-Constrained Optimal Powe...

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IEEE Texas Power and Energy Conference (TPEC)

作者： Hussein Sharadga Javad Mohammadi Constance Crozier Kyri Baker Civil Architectural and Environmental Engineering The University of Texas at Austin Austin Texas USA Industrial and Systems Engineering Georgia Institute of Technology Georgia USA

This work proposes a novel method for scaling multi-timestep security-constrained optimal power flow in large power grids. The challenge arises from dealing with millions of variables and constraints, including binary variables and non-convex, nonlinear characteristics. To navigate these complexities, techniques such as constraint relaxation, linearization, sequen-tial optimization, and problem reformulation are employed. By leveraging these methods, complex power grid problems are solved while achieving high-quality solutions and meeting time constraints. The innovative solution approach showcases great robustness and consistently outperforms benchmark standards.

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Aggregation of Bilinear Bipartite Equality Constraints and its Application to Structural Model Updating Problem

arXiv

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arXiv 2024年

作者： Dey, Santanu S. Han, Dahye Wang, Yang School of Industrial and Systems Engineering Georgia Institute of Technology United States School of Civil and Environmental Engineering Georgia Institute of Technology United States

In this paper, we study the strength of convex relaxations obtained by convexification of aggregation of constraints for a set S described by two bilinear bipartite equalities. Aggregation is the process of rescaling the original constraints by scalar weights and adding the scaled constraints together. It is natural to study the aggregation technique as it yields a single bilinear bipartite equality whose convex hull is already understood from previous literature. On the theoretical side, we present sufficient conditions when conv(S) can be described by the intersection of convex hulls of a finite number of aggregations, examples when conv(S) can only be obtained as the intersection of the convex hull of an infinite number of aggregations, and examples when conv(S) cannot be achieved exactly from the process of aggregation. Computationally, we explore different methods to derive aggregation weights in order to obtain tight convex relaxations. We show that even if an exact convex hull may not be achieved using aggregations, including the convex hull of an aggregation often significantly tightens the outer approximation of conv(S). Finally, we apply the aggregation method to obtain convex relaxation for the structural model updating problem and show that this yields better bounds within a branch-and-bound tree as compared to not using aggregations. © 2024, CC BY.

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Influence of the human development index,motorcycle growth and policy intervention on road traffic fatalities-A case study of Vietnam

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International Journal of Transportation Science and Technology 2023年第4期12卷 925-936页

作者： An Minh Ngoc Chu Cong Minh Nguyen Thi Nhu Hiroaki Nishiuchi Nathan Huynh School of Systems Engineering Kochi University of Technology185 Tosayamadacho-MiyanokuchiKami City Kochi 782-8502Japan University of Transport and Communications 3 Cau GiayLang ThuongDong DaHanoiViet Nam Department of Bridge and Highway Engineering University of TechnologyVietnam National University-Ho Chi Minh CityDistrict 10Hochiminh CityViet Nam Department of Civil and Environmental Engineering University of South CarolinaColumbiaSC 29208USA

Motorcycle ownership in Vietnam has increased exponentially during the last two *** a result,traffic congestion,emissions,and traffic safety have been on the *** particular concern is the significant increase in the number of traffic accidents due to higher traffic volume that is stimulated by economic development and improved households’economic *** this time frame,many programs,such as traffic safety awareness campaign,have been developed and implemented by transportation agencies to reduce traffic *** study seeks to understand the long-term effect of policy intervention on traffic *** is accomplished by developing a log-linear regression model which the response variable is the number of traffic fatalities between 1990 and 2019 and the independent variables include Human Development Index(HDI),motorcycle ownership,and policy *** model estimation results indicate that:(1)a higher degree of economic development(HDI)corresponds to lower traffic fatalities,(2)the motorcycle helmet law has lowered the number of annual traffic fatalities since its enactment,and(3)a higher number of motorcycle trips corresponds to a higher number of traffic *** on this study’s findings,it is recommended that transportation agencies in Vietnam develop and promote an alternative transportation mode.

关键词： Motorcycle ownership Traffic fatality Human development index Transporation policy intervention

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Mistakeproofing! It’s in the Cards: A Serious Game

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Lean Construction Journal 2024年第Special_issue期2024卷 4-17页

作者： Tommelein, Iris D. Civil and Environmental Engineering Department Project Production Systems Laboratory University of California Berkeley BerkeleyCA94720-1712 United States

Question: Can a serious game instill enthusiasm and pique interest in the practice of mistakeproofing by teaching its principles and related Lean thinking? Purpose: The purpose of this paper is (1) introduce a new game, adding to the suite of serious games for Lean Construction education and training, (2) to describe the origin of this new game that is designed to teach the principles of mistakeproofing based on learning from examples, and (3) to provide an overview of the game. Research Design/Method: Inspired by hundreds of mistakeproofing examples, the author created a new card sorting game. She prototyped the game using a deck of poker-sized playing cards and also created an online version. Since 2020, the game has been played numerous times, facilitated by the author or other people. Lessons learned from industry and academic players’ plus/delta feedback continue to drive improvements. Findings: The game is now used in educational and professional settings around the world. Many players have an ‘aha’ moment as they begin to recognize mistakeproofing applications in construction and other contexts, and when they assess the qualities of these applications by sorting examples according to the principles explained in the game. Informal feedback suggests that the game has pedagogical value and is fun to play. Limitations: A formal study is yet to be conducted to measure what and how much players learn about mistakeproofing. Implications: The game is evolving as players develop their own example cards, based on observed or newly inspired applications. For now, we can only speculate what and how much players are learning about mistakeproofing by playing the game. Value for practitioners: Mistakeproofing is an everyday practice, especially for—but not limited to—people who are implementing Lean thinking. It will benefit everyone to know the six principles and learn how to do their own mistakeproofing. © 2024, Lean Construction Institute. All rights reserved.

关键词： Lean production

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Increased energy efficiency using pulse-potential electrochemical advanced oxidation processes

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Chemosphere 2024年 362卷 142480页

作者： Zhang, Kaihang Crittenden, John C. Brook Byers Institute of Sustainable Systems and School of Civil and Environmental Engineering Georgia Institute of Technology AtlantaGA30332 United States

The research investigated the pulse potential effect on Electrochemical Advanced Oxidation Processes (EAOPs) for benzoic acid oxidation. The current efficiency of the electrooxidation is enhanced by changing the pulse frequency and potential on electrodes. The experiments showed that there are opposing phenomena affecting energy efficiency. On the one hand, pulse potential accelerates the mass transfer of benzoic acid in an electric field. On the other hand, pulse potential increases the non-faradic current that uses energy without causing oxidation. Using the Sand equation and the electric double-layer theory, we optimized the pulse frequency and voltage amplitude to achieve the highest energy efficiency for the pulse potential EAOPs. Compared with DC (Direct current) EAOPs, the pulse potential EAOPs save 50% EE/O and have a 41 % CE for the 4_2 V cycle at 50 Hz. Therefore, pulse potential EAOPs can achieve both high pollutant degradation efficiency and low energy consumption at the same time. © 2024 Elsevier Ltd

关键词： Mass transfer

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The Carbon Footprint of Net Zero Buildings: A Critical Review

The Carbon Footprint of Net Zero Buildings: A Critical Revie...

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Data Analytics for Business and Industry: Way Towards a Sustainable Economy (ICDABI), International Conference on

作者： Abdul Mateen Khan Wesam Salah Alaloul Muhammad Ali Musarat Department of Civil and Environmental Engineering Universiti Teknologi PETRONAS Perak Malaysia Department of Civil and Environmental Engineering Offshore Engineering Centre Institute of Autonomous Systems Universiti Teknologi PETRONAS Perak Malaysia

ISBN: (数字)9798350369786

ISBN: (纸本)9798350369793

The idea of "net zero" buildings has received a lot of interest as a potential solution to reduce carbon emissions in the construction industry. However, real-world consequences frequently fall short of idealistic expectations. This research critically examines the current paradigm on net zero buildings, highlighting the hidden carbon emissions within these ostensibly sustainable constructions. It highlights gaps in present practices, discusses barriers to obtain net-zero status, and thoroughly studies the elements contributing to these buildings' carbon emissions. The study proposes a comprehensive strategy that includes both operational and embedded carbon emissions and methods for reducing emissions throughout the building's life cycle. Additionally, the study analyses the consequences and suggestions for legislators, developers, and industry stakeholders to accelerate the adoption of net zero building practices. The analysis considers that by following these principles and adopting a comprehensive approach, net zero buildings may realise their objective of lowering carbon emissions and supporting a profitable, low-carbon-built environment.

关键词： Data analysis Reviews Net zero Buildings Carbon dioxide Stakeholders Chemical elements

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ENHANCING BIODIESEL PRODUCTION THROUGH OIL BLENDS AND OPTIMIZATION APPROACHES - A REVIEW 50

ENHANCING BIODIESEL PRODUCTION THROUGH OIL BLENDS AND OPTIMI...

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50th International Conference on Computers and Industrial engineering: Sustainable Digital Transformation, CIE 2023

作者： Asaad, Sara Maen Inayat, Abrar Dweiri, Fikri Ghenai, Chaouki Shanableh, Abdallah Biomass and Bioenergy Research Group Center for Sustainable Energy and Power Systems Research Research Institute of Sciences and Engineering University of Sharjah United Arab Emirates Department of Industrial Engineering and Engineering Management University of Sharjah United Arab Emirates Department of Sustainable and Renewable Energy Engineering University of Sharjah United Arab Emirates Department of Civil and Environmental Engineering University of Sharjah United Arab Emirates

ISBN: (纸本)9781713886952

The increasing negative impact of fossil fuel usage has necessitated a transition towards sustainable and clean energy sources and fuels such as biodiesel. This paper will provide a short overview on the importance of biodiesel fuel and the effect of utilization of oil blends in the production of biodiesel such as enhanced quality, reduced cost, and positive impact on the environment resulting from utilizing waste feedstock. The use of oil blends and various combinations in literature is discussed and summarized in this paper along with their impact on biodiesel production process and yield. In addition, some of the main technological and economic challenges faced in the production of biodiesel are outlined along with some insights into future directions for biodiesel production optimization using oil blends in order to enhance the efficiency of the process. Finally, different optimization approaches for the production process are also highlighted including Genetic Algorithm, Particle Swarm Optimization, and Simulated Annealing. © 2023 Computers and Industrial engineering. All rights reserved.

关键词： Biodiesel

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