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Multi-risk assessment for bridges: The application of the Italian Guidelines

Di Sano, Silvia (author), Costa, Giancarlo (author), Giordano, Pier Francesco (author), Pregnolato, M. (author), Limongelli, Maria Pina (author)

Bridges are essential elements in the built environment since they underpin the functioning of transportation systems. Nevertheless, they are vulnerable due to aggressive environment, demand beyond the design level, and other contingencies such as extreme events. The management of bridges represents a significant challenge for improving...

journal article 2023

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Predictive heuristic control: Inferring risks from heterogeneous nowcast accuracy

van der Werf, Job (author), Kapelan, Z. (author), Langeveld, J.G. (author)

Urban Drainage Systems can cause ecological and public health issues by releasing untreated contaminated water into the environment. Real-time control (RTC), augmented with rainfall nowcast, can effectively reduce these pollution loads. This research aims to identify key dynamics in the nowcast accuracies and relate those to the performance...

journal article 2023

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Practical Indicators for Risk of Airborne Transmission in Shared Indoor Environments and Their Application to COVID-19 Outbreaks

Peng, Z. (author), Pineda Rojas, A.L. (author), Kropff, E. (author), Bahnfleth, W. (author), Buonanno, G. (author), Dancer, S.J. (author), Kurnitski, J. (author), Li, Y. (author), Boerstra, A.C. (author), Jimenez, J.L. (author)

Some infectious diseases, including COVID-19, can undergo airborne transmission. This may happen at close proximity, but as time indoors increases, infections can occur in shared room air despite distancing. We propose two indicators of infection risk for this situation, that is, relative risk parameter (Hr) and risk parameter (H). They combine...

journal article 2022

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Probabilistic Risk Metric for Highway Driving Leveraging Multi-Modal Trajectory Predictions

Wang, X. (author), Alonso-Mora, J. (author), Wang, M. (author)

Road traffic safety has attracted increasing research attention, in particular in the current transition from human-driven vehicles to autonomous vehicles. Surrogate measures of safety are widely used to assess traffic safety but they typically ignore motion uncertainties and are inflexible in dealing with two-dimensional motion. Meanwhile,...

journal article 2022

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A pragmatic, performance-based approach to levee safety assessments

Rikkert, S.J.H. (author), Kok, M. (author), Lendering, K.T. (author), Jongejan, R.B. (author)

Flood prone areas are often protected against flooding by an extensive network of flood defenses. To ensure their structural integrity, these flood defenses are periodically assessed. Many levees have been functioning well for decades, and have survived several relatively high hydraulic loads within their lifetime. However, information on...

journal article 2022

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Quantitative Risk Assessment of Cyber Attacks on Cyber-Physical Systems using Attack Graphs

Semertzis, I. (author), Subramaniam Rajkumar, Vetrivel (author), Stefanov, Alexandru (author), Fransen, Frank (author), Palensky, P. (author)

Over the past decade, the number of cyber attack incidents targeting critical infrastructures such as the electrical power system has increased. To assess the risk of cyber attacks on the cyber-physical system, a holistic approach is needed that considers both system layers. However, the existing risk assessment methods are either qualitative in...

conference paper 2022

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A Simulation Study of Risk-Aware Path Planning in Mitigating the Third-Party Risk of a Commercial UAS Operation in an Urban Area

He, X. (author), Jiang, C. (author), Li, L. (author), Blom, H.A.P. (author)

UAS-based commercial services such as urban parcel delivery are expected to grow in the upcoming years and may lead to a large volume of UAS operations in urban areas. These flights may pose safety risks to persons and property on the ground, which are referred to as third-party risks. Path-planning methods have been developed to generate a...

journal article 2022

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Implications of climate change for railway infrastructure

Palin, Erika J. (author), Stipanovic Oslakovic, Irina (author), Gavin, Kenneth (author), Quinn, Andrew (author)

Weather phenomena can result in severe impacts on railway infrastructure. In future, projected changes to the frequency and/or intensity of extreme weather events could change weather–infrastructure risk profiles. Infrastructure owners and operators need to manage current weather impacts and put in place adequate plans to anticipate and adapt...

review 2021

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Integrated InSAR monitoring and structural assessment of tunnelling-induced building deformations

Macchiarulo, V. (author), Milillo, Pietro (author), DeJong, Matthew J. (author), González Martí, Javier (author), Sánchez, Jordi (author), Giardina, Giorgia (author)

Structural deformation monitoring is crucial for the identification of early signs of tunnelling-induced damage to adjacent structures and for the improvement of current damage assessment procedures. Satellite multi-temporal interferometric synthetic aperture radar (MT-InSAR) techniques enable measurement of building displacements over time...

journal article 2021

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A safety function deployment approach to risk management of HazMat highway transportation

Zhigerbayeva, Guldana (author), Yang, M. (author)

Various methods have been developed to ensure the safe transportation of hazardous materials (HazMat). These methods span from conventional statistical methods to modern risk management approaches. An essential question is how to establish the linkages between the regulatory requirements and the safety measures. The analysis of historical data...

journal article 2021

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Risk Assessment Methodology for Vessel Traffic in Ports by Defining the Nautical Port Risk Index

Bellsola Olba, X. (author), Daamen, W. (author), Vellinga, T. (author), Hoogendoorn, S.P. (author)

Ports represent a key element in the maritime transportation chain. Larger vessels and higher traffic volumes in ports might result in higher risks at the navigational level. Thus, the dire need for a comprehensive and efficient risk assessment method for ports is felt. Many methodologies have been proposed so far, but their application to...

journal article 2019

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Using Vine Copulas to Generate Representative System States for Machine Learning

Konstantelos, Ioannis (author), Sun, Mingyang (author), Tindemans, Simon H. (author), Issad, Samir (author), Panciatici, Patrick (author), Strbac, Goran (author)

The increasing uncertainty that surrounds electricity system operation renders security assessment a highly challenging task; the range of possible operating states expands, rendering traditional approaches based on heuristic practices and ad hoc analysis obsolete. In turn, machine learning can be used to construct surrogate models...

journal article 2019

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Evaluation of flood risk reduction strategies through combinations of interventions

van Berchum, E.C. (author), Mobley, William (author), Jonkman, Sebastiaan N. (author), Timmermans, Jos (author), Kwakkel, J.H. (author), Brody, Samuel D. (author)

Large, complex coastal regions often require a combination of interventions to lower the risk of flooding to an acceptable level. In practice, a limited number of strategies are considered and interdependencies between interventions are often simplified. This paper presents the Multiple Lines of Defence Optimization System (MODOS)‐model. This...

journal article 2018

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When Conservation Meets Engineering: Predicting the Damaging Effects of Vibrations on Pastel Paintings

Sauvage, L.L.F. (author), Wei, W. (author), Martinez, M.J. (author)

Pastel paintings are one of the most fragile types of objects of art. When handling loan requests, conservators lack scientific data to assess the risk for damage in transport, and thus for making decisions whether they can be transported. A research project was initiated in 2014 to investigate the effect of vibrations on the condition of pastel...

journal article 2018

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Structural Health and Stability Assessment of High-Speed Railways via Thermal Dilation Mapping With Time-Series InSAR Analysis

Qin, Xiaoqiong (author), Liao, Mingsheng (author), Zhang, L (author), Yang, M. (author)

Thermal dilation is a vital component of deformation along the extensive railway network infrastructure. To monitor subtle deformation, the synthetic aperture radar interferometry (InSAR) technique has been adopted as a space-borne geodetic tool. However, InSAR applications in railway stability surveillance have been largely limited by the...

journal article 2017

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Comparative assessment of safety indicators for vehicle trajectories on the highway

Mullakkal-Babu, F.A. (author), Wang, M. (author), Farah, H. (author), van Arem, B. (author), Happee, R. (author)

Safety measurement and analysis have been a challenging and well-researched topic in transportation. Conventionally, surrogate safety measures have been used as safety indicators in simulation models for safety assessment, in control formulations for driver assistance systems, and in data analysis of naturalistic driving studies. However,...

conference paper 2017

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Voltage Control in Distributed Generation under Measurement Falsification Attacks

Ma, M. (author), Herdeiro Teixeira, A.M. (author), van den Berg, Jan (author), Palensky, P. (author)

Low-voltage distribution grids experience a rising penetration of inverter-based, distributed generation. In order to not only contribute to but also solve voltage problems, these inverters are increasingly asked to participate in intelligent grid controls. Communicating inverters implement distributed voltage droop controls. The impact of...

journal article 2017

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A literature survey on asset management in electrical power [transmission and distribution] system

Khuntia, S.R. (author), Rueda, José L. (author), Bouwman, S. (author), van der Meijden, M.A.M.M. (author)

Asset management is one of the key components in a transforming electric power industry. Electric power industry is undergoing significant changes because of technical, socio-economical and environmental developments. Also, because of restructuring and deregulation, the focus has been on transmission and distribution assets that include...

journal article 2016

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Risk Assessment of Low Level Radioactive Waste In Near Surface Disposal Facilities

Sujitha, S. (author), Datta, S. (author), Babu, G.L.S. (author)

In this paper, a radiological model for the risk assessment is developed for the near surface disposal facilities of Cesium, Strontium and Cobalt. In addition to the time-dependent annual release rate and dose rate of the radionuclides, the risk to the critical individual is also estimated. The results show that the highest value of annual dose...

conference paper 2015

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Uncertainty Analysis and Risk Management of Underground Cavern Group at Jinping II Hydropower Station

Zhang, Y.-J. (author), Feng, X.-T. (author), Jiang, Q. (author)

The epistemic uncertainty and aleatory uncertainty caused by the geology condition and construction method make the surrounding rock stability evaluation of underground cavern group difficult. The first may be reduced with more field investigation, tests or monitoring, but the later can not be avoided completely. So the risk analysis method can...

conference paper 2015