Ralf Hedel

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Verified

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• Dr. rer. nat.
• Project Manager at Fraunhofer Institute for Transportation and Infrastructure Systems

The study presents a robust, automated camera gauge for long-term river water level monitoring operating in near real-time. The system employs artificial intelligence (AI) for the image-based segmentation of water bodies and the identification of ground control points (GCPs), combined with photogrammetric techniques, to determine water levels from...

Obtaining real-time water level estimations is crucial for effective monitoring and response during emergencies caused by heavy rainfall and rapid flooding. Typically, this type of monitoring can be a difficult task, requiring river reach preparations and specialized equipment. Moreover, in extreme flood events, standard observation methods may bec...

The handling of natural disasters, especially heavy rainfall and corresponding floods, requires special demands on emergency services. The need to obtain a quick, efficient and real-time estimation of the water level is critical for monitoring a flood event. This is a challenging task and usually requires specially prepared river sections. In addit...

The importance of optical measurement methods in hydrology is increasing in the last years. In contrast to conventional gauging techniques, they can be applied remotely, making the measurement safe for humans and equipment, even under difficult measurement conditions. One important hydrological parameter to measure is discharge. Deriving discharge...

The present work introduces a case study on the climate resilience of interconnected critical infrastructures to forest fires, that was performed within the framework on H2020 EU-CIRCLE project (GA 653824). It was conducted in South France, one of the most touristic European regions, and also one of the regions at the highest forest fire risk that...

We present the IMPRESS software system; a tool that can support the first responders in cases of disaster management and resources allocation and the optimisation of response to large-scale emergencies. This is a multi-level architecture system that has desktop and mobile interfaces, supporting the decision makers with different modules. Every modu...

Purpose Damage functions constitute an essential part of the modelling of critical infrastructure (CI) performance under the influence of climate events. This paper aims to compile and discuss publications comprising damage functions for transport assets. Design/methodology/approach The research included the collection of contemplable literature...

This paper introduces a methodological approach for identifying the resilience of interconnected EU critical infrastructures to climate change. The proposed approach tries to establish a consequence-based modelling framework for assessing climate-dependent causal relationships between CI operation and response to climate impacts with an aim to mini...

In the course of emerging threats of the 21st century, this paper aims at supporting the further development of the European Programme for Critical Infrastructure Protection (EPCIP), in particular the directive 2008/114/EC on designation and protection of European Critical Infrastructures. It provides a comprehensive review of this legal framework...

In the course of emerging threats of the 21st century, this paper aims at supporting the further development of the European Programme for Critical Infrastructure Protection (EPCIP), in particular the directive 2008/114/EC on designation and protection of European Critical Infrastructures. It provides a comprehensive review of this legal framework...

The EU-CIRCLE project (H2020 GA:653824) has defined a holistic framework, that identifies and assesses the risks caused by several climatic hazards and climate-change stressors to heterogeneous, interconnected and interdependent critical infrastructures (CI). This risk management framework is the first step in ensuring the resilience of vulnerable...

EU-CIRCLE is a research project with an aim to assess the resilience of interconnected and interdependent critical infrastructures to climate change and especially to climate hazards. As infrastructures have lifetime that span several decades, it is imperative to generate scientifically truthful and validated knowledge on the potential impacts of c...

During large and major incidents, health service providers have to cope with disproportion between the urgent needs, a lack of available human an/material resources and inherent time constraints. The IMPRESS solution improves the efficiency and effectiveness of decision making in emergency health operations, facilitates the communication between Co...

This paper introduces a methodological approach for identifying the resilience of interconnected EU critical infrastructures to climate change. The proposed approach try to establish a consequence based modelling framework for assessing climate dependent causal relationships between CI operation and response to climate impacts with an aim to minimi...

Abstract Provided a high degree of capacity utilisation, the transport of goods on rails represents an environmentally, economically and socially advantageous mode of transport when compared to road haulage. As its current low mode-share in Europe reveals, however, rail freight transport is a competitive alternative only in a minority of cases.

This study investigates the influence of urban form on automobile travel using travel-diary data from Germany. Two dimensions of car use are considered: the discrete decision to own a car and the continuous decision of distance traveled. Because these decisions are likely to be influenced by factors unobservable to the researcher, we apply censored...

A longstanding question within the field of transportation demand management is the strength of the relationship between urban form and mobility behavior. Although several studies have identified a strong correlation between these variables, there is as yet scant evidence to support policy interventions that target land use as a means of influencin...

A longstanding question within the field of transportation demand management is the strength of the relationship between urban form and mobility behavior. Although several studies have identified a strong correlation between these variables, there is as yet scant evidence to support policy interventions that target land use as a means of influencin...

This study estimates an econometric model of the influence of urban form on non-work automobile travel using a panel of travel-diary data collected in Germany between 1994 and 2003. Two dimensions of car use are considered: the discrete decision to own a car and the continuous decision of distance traveled. Because these decisions are related and,...

Within the European Commission’s 6th Framework Programme, the REORIENT project is investigating ways to provide seamless international rail freight transport, in order to make rail transport more attractive and increase the share of freight being transported by rail. In order to achieve its objective, the REORIENT Consortium developed a methodology...

This paper explores the application of the ELECTRE III multicriteria decision-making tool to evaluate alternative policy strategies for promoting seamless freight transport along a rail corridor connecting the Nordic region with Central and Southeastern Europe. ELECTRE III is based on successive pairwise comparisons of two alternatives to establish...

https://www.ioer.de/fileadmin/internet/IOER_Forschung/FB_M/DA_Bewertung_Hedel_2004.pdf

I. INTRODUCTION This paper describes an automated tool that allows the analyst to systematically vary key parameters of the ELECTRE III multicriteria decision-making tool, thereby facilitating sensitivity analyses of the results. We also demonstrate how the sensitivity analyses can be presented by means of an intuitive graphical depiction of shifts...