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7th International Conference on Computational Methods in Structural Dynamics and Earthquake engineering, COMPDYN 2019

作者： de Risi, Maria Teresa Furtado, André Rodrigues, Hugo Melo, José Verderame, Gerardo Mario Arêde, António Varum, Humberto Manfredi, Gaetano Department of Structures for Engineering and Architecture University of Naples Federico II via Claudio 21 Naples80125 Italy CONSTRUCT-LESE Faculdade de Engenharia da Universidade do Porto Porto Portugal RISCO – ESTG Polytechnic Institute of Leiria Leiria Portugal

ISBN: (纸本)9786188284470

Past and more recent seismic events worldwide clearly showed that a crucial issue for life-safety and loss reduction due to earthquakes for existing reinforced concrete (RC) buildings is related to the out-of-plane (OOP) collapse of infill masonry walls. In literature, few studies addressed this paramount topic, above all about the proposal of strengthening strategies to prevent the infills’ collapse. This paper presents an experimental work about the assessment of possible strengthening solutions designed to mitigate or prevent the out-of-plane collapse of masonry infills in existing RC buildings. Three nominally identical full-scale one-bay-one-story RC frames were built and infilled with a thin masonry wall made up of horizontal hollow clay bricks. The first specimen was representative of the enclosure of a typical existing RC building in the Mediterranean region in its "as-built" condition. The remaining two specimens were strengthened against the out-of-plane collapse by means of two different strengthening techniques based on the application of innovative systems made up of high-ductility mortar plaster and fibre-reinforced polymer nets. All the tests consisted in the application of a semi-cyclic (loading-unloading-reloading) history of imposed displacements in the OOP direction by means of small pneumatic jacks through a uniform distributed load. Experimental results are shown in terms of OOP force-displacement responses, deformed shapes and damage evolution. In the end, the results of the tests are compared to assess the effectiveness of the selected strengthening techniques and to provide a support towards the choice of the best strategies for future further investigations and applications. © 2019 The authors.

关键词： Earthquakes

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Erratum to “Influence of soil properties and feedstocks on biochar potential for carbon mineralization and improvement of infertile soils” [Geoderma 332 (2018) 100–108]

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Geoderma 2025年 456卷

作者： Ali El-Naggar Sang Soo Lee Yasser Mahmoud Awad Xiao Yang Changkook Ryu Muhammad Rizwan Jörg Rinklebe Daniel C.W. Tsang Yong Sik Ok Korea Biochar Research Center O-Jeong Eco-Resilience Institute (OJERI) Division of Environmental Science and Ecological Engineering Korea University Seoul 02841 Republic of Korea School of Natural Resources and Environmental Science Kangwon National University Chuncheon 24341 Republic of Korea Department of Soil Sciences Faculty of Agriculture Ain Shams University Cairo 11241 Egypt Department of Environmental Engineering Yonsei University Wonju 26493 Republic of Korea Faculty of Agriculture Suez Canal University Ismailia 41522 Egypt School of Mechanical Engineering Sungkyunkwan University Suwon 16419 Republic of Korea Department of Environmental Sciences and Engineering Government College University Allama Iqbal Road 38000 Faisalabad Pakistan University of Wuppertal School of Architecture and Civil Engineering Institute of Foundation Engineering Water- and Waste-Management Soil- and Groundwater-Management Pauluskirchstraße 7 42285 Wuppertal Germany Department of Environment Energy and Geoinformatics Sejong University Seoul 05006 Republic of Korea Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China

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Corrigendum to “Influence of soil properties and feedstocks on biochar potential for carbon mineralization and improvement of infertile soils” [Geoderma 332 (2018) 100–108]

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Geoderma 2025年 456卷

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A Markov Traffic Model for Signalized Traffic Networks Based on Bayesian Estimation

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IFAC-PapersOnLine 2020年第2期53卷 15029-15034页

作者： S.Y. Liu S. Lin Y.B. Wang B. De Schutter W.H.K. Lam School of Computer Science and Technology University of Chinese Academy of Sciences Beijing 100089 China Key Lab of Big Data Mining and Knowledge Management Chinese Academy of Sciences College of Civil Engineering and Architecture Zhejiang University PR China Delft Center for Systems and Control Delft University of Technology The Netherlands Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hong Kong SAR China

In order to better understand the stochastic dynamic features of signalized traffic networks, we propose a Markov traffic model to simulate the dynamics of traffic link flow density for signalized urban traffic networks with demand uncertainty. In this model, we have four different state modes for the link according to different congestion levels of the link. Each link can only be in one of the four link state modes at any time, and the transition probability from one state to the other state is estimated by Bayesian estimation based on the distributions of the dynamic traffic flow densities, and the posterior probabilities. Therefore, we use a first-order Markov Chain Model to describe the dynamics of the traffic flow evolution process. We illustrate our approach for a small traffic network. Compared with the data from the microscopic traffic simulator SUMO, the proposed model can estimate the link traffic densities accurately and can give a reliable estimation of the uncertainties in the dynamic process of signalized traffic networks.

关键词： Markov traffic model Traffic signals Bayesian Urban traffic network

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Corrigendum to “Spatiotemporal analysis of underlying factors in urban transformations: Quantifying the importance of urban plan intentions in the Austin Metropolitan Area, Texas” [Land Use Policy 149 (2025) 1–12]

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Land Use Policy 2025年 153卷

作者： Chunhong Zhao Qihao Weng Zhichao He School of Geology and Geomatics Tianjin Chengjian University Tianjin 300384 China School of Geographical Sciences Key Laboratory of Geographical Processes and Ecological Security of Changbai Mountains Ministry of Education Northeast Normal University Changchun 130024 China Land Change Science Research Unit Swiss Federal Research Institute WSL Birmensdorf Switzerland JC STEM Lab of Earth Observations Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic University Hung Hom Hong Kong Research Centre for Artificial Intelligence in Geomatics The Hong Kong Polytechnic University Hung Hom Hong Kong Research Institute for Land and Space The Hong Kong Polytechnic University Hung Hom Hong Kong School of Architecture and Civil Engineering Xiamen University Fujian China

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Unlocking the potential of vanadium redox flow batteries: Recent advances in biomass lignin-based carbon fibers and future outlook

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Biomass and Bioenergy 2025年 200卷

作者： Yu Zhao Tholkappiyan Ramachandran Avijit Ghosh Abdullah G. Al-Sehemi Yedluri Anil Kumar Sunkara Srinivasa Rao Akhilesh Kumar Yadav Durai Mani Anhui Key Laboratory of High-performance Non-ferrous Metal Materials Anhui Polytechnic University Wuhu 241000 PR China Department of Physics Khalifa University of Science and Technology P. O. Box 127788 Abu Dhabi United Arab Emirates Department of Electrical and Electronic Engineering Begum Rokeya University Rangpur 5400 Bangladesh Central Labs King Khalid University AlQura'a P.O. Box 960 Abha Saudi Arabia Department of Chemistry College of Science King Khalid University Abha 61413 Saudi Arabia Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences SIMATS Chennai India Department of Electronics and Communication Engineering Koneru Lakshmaiah Education Foundation Bowrampet Hyderabad 500 043 Telangana India Department of Electronics and Communication Engineering School of Core Engineering Faculty of Science Technology and Architecture (FoST&A) Manipal University Jaipur Jaipur 303007 India Department of Civil Engineering Yeungnam University Gyeongsan 38541 Republic of Korea Centre for Promotion of Research Graphic Era (Deemed to be University) Clement town Dehradun Uttarakhand 248002 India

Electrode materials play a pivotal role in determining the performance of redox flow batteries (RFBs), which are emerging as efficient and scalable energy storage systems for renewable energy integration. Conventional electrode materials such as graphite and carbon felt, while effective, are expensive and environmentally taxing. As a sustainable alternative, biomass-derived carbon fibers (BCFs) and lignin-derived carbon (LDC) have attracted significant attention due to their low cost, environmental friendliness, and desirable electrochemical properties. BCFs offer high surface area, excellent electrical conductivity, and mechanical durability, making them well-suited for RFB electrodes. Their performance can be further enhanced through physical and chemical activation processes that increase porosity and surface functionality. Lignin, a complex and abundant phenolic biopolymer, serves as a promising carbon precursor due to its high carbon content, thermal stability, and intrinsic redox activity. Through carbonization and activation, lignin can be converted into high-conductivity carbon materials with tunable properties for electrochemical applications. This review critically evaluates the current progress in the development and application of BCFs and LDCs in RFBs, highlighting how their integration can enhance electron transport, ion accessibility, and long-term stability. The combined use of these materials not only improves RFB efficiency but also contributes to reducing the overall carbon footprint of energy storage systems. Finally, the review identifies key challenges and outlines future research directions aimed at optimizing material synthesis, improving performance, and enabling large-scale implementation to support a more sustainable energy infrastructure.

关键词： Biomass-derived carbon Carbon fibers Electrocatalysis Electrode materials and porous carbon structures Energy efficiency Lignin-based materials Renewable energy storage RFBs Sustainable materials

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Adaptive NURBS based local failure analyses of retrofitted masonry aggregates

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AIP Conference Proceedings 2021年第1期2343卷

作者： Nicola Grillanda Marco Valente Gabriele Milani Department of Architecture Built Environment and Construction Engineering (A. B. C.) Polytechnic University of Milan Piazza Leonardo da Vinci 32 20133 Milan Italy

In this paper, the vulnerability of historical masonry aggregates due to local failures is assessed through a novel kinematic limit analysis that is based on NURBS geometry representation and Genetic Algorithm-mesh adaptation. The mesh adaptation allows finding the shape of the collapse mechanism with good precision. The contribution of the most common reinforcement systems, such as tie rods, is taken into account and the collapse mechanism modifications due to the presence of tie rods are evaluated. A historical masonry aggregate located in the historical center of Arsita (Teramo, Italy) is presented as case study.

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Design Criteria for Flux-Weakening Control Bandwidth and Voltage Margin in IPMSM Drives Considering Transient Conditions

Design Criteria for Flux-Weakening Control Bandwidth and Vol...

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IEEE Energy Conversion Congress and Exposition

作者： Jose JACOB Sandro CALLIGARO Omar BOTTESI Roberto PETRELLA Faculty of Science and Technology Free University of Bozen Bolzano ITALY Polytechnic Department of Engineering and Architecture University of Udine Udine ITALY

Flux-Weakening (F-W) methods based on feedback voltage regulation schemes are commonly employed for Interior Permanent Magnet Synchronous Motor (IPMSM) drive systems. Generally, the voltage reference magnitude in the voltage controller is lower than the maximum available voltage due to the margin imposed to prevent saturation of current regulators during transients. However, the margin should be kept as small as possible to avoid torque capability loss above the base speed and larger current consumption at a certain torque in F-W operation. The trade-off between F-W control bandwidth and the necessity of voltage margin has been reported in previous literature, but never analyzed in depth. In fact, F-W regulator design aiming at a certain bandwidth has been addressed by means of gain adaptation, but the choice of the target bandwidth remained as an open issue. In this paper, the crucial transient conditions which can cause the saturation of current regulators, specifically the reduction of input voltage and the fast acceleration of the drive, are considered. The input voltage reduction affects the inverters supplied by means of a diode rectifier during AC grid voltage drop and the fast acceleration is a very common transient condition leading the control in the F-W range. Both conditions are analyzed in terms of worst-case requirement of F-W control bandwidth vs. setpoint voltage margin and the proposed analytical modelling is verified by means of simulations and experiments. The findings can be applied in the design of auto-tuning procedures and design for high-reliability or safety-critical applications.

关键词： Voltage control Bandwidth Torque Regulators Inverters Transient analysis Transfer functions

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An innovative technique for confinement of historical masonry columns: Experimental results 10th

An innovative technique for confinement of historical masonr...

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10th International Masonry Conference,IMC 2018

作者： Monni, Francesco Quagliarini, Enrico Geminiani, Stefano Schiavoni, Mirko Tirabassi, Marco Lenci, Stefano AhRTE Srl Spin Off of Polytechnic University of Marche DICEA Department of Civil and Building Engineering and Architecture Polytechnic University of Marche Via Brecce Bianche Ancona60131 Italy DICEA Department of Civil and Building Engineering and Architecture Polytechnic University of Marche Via Brecce Bianche Ancona60131 Italy

Basalt fiber rope is an innovative product that has been already used by authors with good results in some previous experiences about consolidation of masonry. It is the main element of the technique of continuous stitchings, which has been effective in connecting the outer leaves of "three-leaf" masonry specimens subject to compressive and shear load, obtaining a monolithic behaviour and an improvement of the mechanical characteristics of the tested panels. Moreover, some laboratory experiences have shown the effectiveness of this strengthening system in increasing the performance of masonry wall specimens subject to out-of-plane actions (also in a dry application). Last studies show that basalt fiber ropes could be successfully used also for the confinement of masonry columns, without compromising aesthetical appearance of building. In this work are presented the experimental results of a laboratory research performed to better evaluate the effectiveness of the technique for masonry columns confinement. Particular attention was paid to the issue of strengthening facing-masonry columns in order to propose a technique usable also in architectural heritage restoration. Finally was tested also a dry application - focusing on reversibility of the technique - applicable to columns also for first-aid intervention. © 2018 The International Masonry Society (IMS).

关键词： Walls (structural partitions)

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Spatial and behavior analysis for improving the Siantan Hilir health center into a Type-D Hospital

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IOP Conference Series: Earth and Environmental Science 2021年第1期780卷

作者： D P Sari M R Alhamdani Department of Architecture Pontianak State Polytechnic Jl. Ahmad Yani 78124 Pontianak-West Kalimantan Indonesia Department of Architecture Faculty of Engineering Tanjungpura University Jl. Prof. Dokter H. Hadari Nawawi 78115 Pontianak-West Kalimantan Indonesia

The public awareness increasingly for the importance of quality and safety of services in health services such as hospitals or health centers. The Siantan Hilir Health Center has classified as complete facilities comparing to other health centers in Pontianak City. From this condition, it is necessary to formulate studies and strategies for improving facilities that refer to the Minister of Health Regulation. This study aims to: 1) as a basis for a feasibility study to improve the status of the Siantan Hilir Health Center into a Type-D Hospital in Pontianak; 2) as a basis for planners to accommodate planned functions; 3) as a basis for effective and efficient circulation planning relate functions in the environment. The research method used the descriptive qualitative approach for describing the current situation to identify the existing conditions of the Siantan Hilir Public Health Care. Space syntax analysis is used to find out the intelligibility of space in the Siantan Hilir Health Center space layout, as seen from the connectivity, integrity, and mean depth of space and behavior mapping. The results are the analysis of spatial layout configuration and the performance of building user behavior to improve the Siantan Hilir Public Health Care into a Type-D Hospital.

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