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Journal of infrastructure preservation and resilience最新文献

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Deterioration mechanism of steam-cured concrete subjected to coupled environmental acid and drying action 蒸汽养护混凝土在环境酸性和干燥耦合作用下的劣化机理
Pub Date : 2020-03-23 DOI: 10.1186/s43065-020-00001-2
G. Long, You-jun Xie, Zhiyu Luo, Lu Qu, John L. Zhou, Wengui Li
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引用次数: 0
Risk-based cost-benefit analysis of climate adaptation measures for Australian contemporary houses under extreme winds 基于风险的极端风力下澳大利亚当代房屋气候适应措施成本效益分析
Pub Date : 2020-03-23 DOI: 10.1186/s43065-020-00002-1
Hao Qin, M. Stewart
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引用次数: 1
Foreword from the editor-in-chief: the inaugural issue of journal of infrastructure preservation and resilience 主编前言:《基础设施保护与恢复能力》期刊创刊号
Pub Date : 2020-03-23 DOI: 10.1186/s43065-020-00006-x
Xianming Shi
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引用次数: 7
Characterization of vulnerability of road networks to fluvial flooding using SIS network diffusion model 利用SIS网络扩散模型表征道路网络对河流洪水的脆弱性
Pub Date : 2020-03-23 DOI: 10.1186/s43065-020-00004-z
B. Abdulla, Amin Kiaghadi, H. Rifai, B. Birgisson
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引用次数: 16
Fatigue life prediction of pipeline with equivalent initial flaw size using Bayesian inference method 等效初始缺陷尺寸管道疲劳寿命的贝叶斯预测方法
Pub Date : 2020-03-23 DOI: 10.1186/s43065-020-00005-y
Milad Salemi, Hao Wang
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引用次数: 5
Maintaining critical infrastructure resilience to natural hazards during the COVID-19 pandemic: hurricane preparations by US energy companies. 在2019冠状病毒病大流行期间保持关键基础设施抵御自然灾害的能力:美国能源公司的飓风准备。
Pub Date : 2020-01-01 Epub Date: 2020-08-06 DOI: 10.1186/s43065-020-00010-1
Aaron Clark-Ginsberg, Ismael Arciniegas Rueda, Jonathon Monken, Jay Liu, Hong Chen

The COVID-19 pandemic has the potential to compromise the ability of critical infrastructure utilities to respond to or mitigate natural hazards like wildfires and hurricanes. This article describes the ways that an energy organization, the regional transmission operator PJM, is preparing for hurricanes during the COVID-19 pandemic. PJM is using a combination of technological and organizational processes to prepare for hurricanes during the pandemic. Activities include the development of a third control room to increase redundancy and maintaining social distance at control center, investment in more resilient communications technology to maintain connectivity, and taking a holistic approach to identifying issues related to supply chain and fuel security. With this mix of organizational and technological processes, we argue that critical infrastructure resilience should be understood as a sociotechnical construct and identify several recommendations for improving resilience. The article has implications for policymakers working to maintain infrastructure resilience to natural hazards during the COVID-19 pandemic.

2019冠状病毒病大流行有可能损害关键基础设施公用事业应对或减轻野火和飓风等自然灾害的能力。本文介绍了能源组织,即区域输电运营商PJM在COVID-19大流行期间为飓风做准备的方法。PJM正在结合使用技术和组织程序,为大流行期间的飓风做好准备。活动包括开发第三个控制室,以增加冗余并保持控制中心的社交距离,投资更具弹性的通信技术以保持连接,并采取整体方法来识别与供应链和燃料安全相关的问题。通过这种组织和技术过程的混合,我们认为关键基础设施的弹性应该被理解为一种社会技术结构,并确定了提高弹性的几个建议。这篇文章对在2019冠状病毒病大流行期间努力保持基础设施抵御自然灾害能力的政策制定者具有启示意义。
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引用次数: 16
Block matching frame based material reconstruction for spectral CT. 基于块匹配帧的光谱 CT 材料重建。
IF 3.5 Pub Date : 2019-12-05 DOI: 10.1088/1361-6560/ab51db
Weiwen Wu, Qian Wang, Fenglin Liu, Yining Zhu, Hengyong Yu

Spectral computed tomography (CT) has a great potential in material identification and decomposition. To achieve high-quality material composition images and further suppress the x-ray beam hardening artifacts, we first propose a one-step material reconstruction model based on Taylor's first-order expansion. Then, we develop a basic material reconstruction method named material simultaneous algebraic reconstruction technique (MSART). Considering the local similarity of each material image, we incorporate a powerful block matching frame (BMF) into the material reconstruction (MR) model and generate a BMF based MR (BMFMR) method. Because the BMFMR model contains the L 0-norm problem, we adopt a split-Bregman method for optimization. The numerical simulation and physical phantom experiment results validate the correctness of the material reconstruction algorithms and demonstrate that the BMF regularization outperforms the total variation and no-local mean regularizations.

光谱计算机断层扫描(CT)在材料识别和分解方面具有巨大潜力。为了获得高质量的材料成分图像并进一步抑制 X 射线束硬化伪影,我们首先提出了基于泰勒一阶展开的一步材料重建模型。然后,我们开发了一种基本的材料重建方法,命名为材料同步代数重建技术(MSART)。考虑到每个材料图像的局部相似性,我们在材料重建(MR)模型中加入了强大的块匹配框架(BMF),并生成了基于 BMF 的 MR(BMFMR)方法。由于 BMFMR 模型包含 L 0-norm 问题,我们采用了分裂-布雷格曼方法进行优化。数值模拟和物理幻影实验结果验证了材料重建算法的正确性,并证明 BMF 正则化优于总变异正则化和无局均正则化。
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引用次数: 0
期刊
Journal of infrastructure preservation and resilience
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