Erik Vullings - Academia.edu (original) (raw)

Papers by Erik Vullings

Journal of research and practice in information technology, 2007

Internationally, the need for federated Identity & Access Management continues to grow, as it... more Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (a.k.a. Service Providers) using their home account and some attributes that are being released securely by their home organization (a.k.a. Identity Providers). In other words, it solves the problem of service providers needing to create and maintain accounts for external users who they may not know. Current implementations seem to either rely on SAML, the Security Assertion Markup Language, or PKI, where the latter is mainly popular for Grid services. However, there are some trends towards convergence, for example, the recent release of the Globus toolkit is SAML and XACML aware, and GridShib is another project that uses PKI for authentication and SAML for passing attributes for authorisation. Still, these projects do not use the full potential of SAML and XACML, so this paper focuses on a scalable approach using distributed attribute authorities to access Grid services.

Lecture Notes in Computer Science, 1997

We present a method to segment the electrocardiogram (ECG) using time-warping, a technique common... more We present a method to segment the electrocardiogram (ECG) using time-warping, a technique commonly used in speech recognition. First, the ECG is transformed to a piecewise linear approximation. Next, the slope amplitude is used to cut the ECG into distinct periods (R-R interval). These periods are then compared to each other using timewarping, and the pair which is most similar

Abstract Internationally, the need for federated Identity & Access Management continues to gr... more Abstract Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (aka Service Providers) using their home account and some attributes that are being released securely ...

Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1997

... E. Vullings, A. J. Krijgsman, HB Verbruggen ... Abdtruci-The Intelligent Anesthesia Monitor (... more ... E. Vullings, A. J. Krijgsman, HB Verbruggen ... Abdtruci-The Intelligent Anesthesia Monitor (IAM) project aims to examine and implement the steps neces-sary to build an anesthesia monitor which advises an anes-thetist during an operation, alarms him only when nec-essary ...

Internationally, the need for federated Identity & Access Management continues to grow, as it all... more Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (a.k.a. Service Providers) using their home account and some attributes that are being released securely by their home organization (a.k.a. Identity Providers). In other words, it solves the problem of service providers needing to create and maintain accounts for external users who they may not know. Current implementations seem to either rely on SAML, the Security Assertion Markup Language, or PKI, where the latter is mainly popular for Grid services. However, there are some trends towards convergence, for example, the recent release of the Globus toolkit is SAML and XACML aware, and GridShib is another project that uses PKI for authentication and SAML for passing attributes for authorisation. Still, these projects do not use the full potential of SAML and XACML, so this paper focuses on a scalable approach using distributed a...

International Conference on Informatics in Control, Automation and Robotics, 2006

Many motion systems repeatedly follow the same trajectory. However, in many cases, the motion sys... more Many motion systems repeatedly follow the same trajectory. However, in many cases, the motion system does not learn from tracking errors obtained in a previous cycle. Iterative Learning Control (ILC) resolves this issue by compensating for previous tracking errors, but it suffers from not being able to distinguish between tracking errors caused by machine dynamics versus errors caused by noise, and by trying to 'learn' the noise, additional errors are introduced. In this paper we address this issue by using the servo error signal by identifying the time-varying nonlinear effects, which can be learned and therefore improve the position accuracy, versus the stochastic effects, which cannot be learned. The identification of these effects is performed by means of time-frequency analysis of the servo error and therefore our goal is to obtain a high-resolution time-frequency energy distribution of the analyzed signal. Here we compare the servo error energy distribution by three means: (1) Wigner distribution; (2) adaptive signal decomposition over one dictionary of modulated versions of wavelets (simple atomic dictionary); (3) and by means of combining several simple atomic dictionaries into a complex atomic dictionary. We show that the latter approach leads to the highest-resolution energy distribution and tracking performance.

Fedora's popularity amongst institutions is largely due to its scalability and flexibility t... more Fedora's popularity amongst institutions is largely due to its scalability and flexibility to handle a large variety of data types. With the increased take up rate, the need to support federated authentication and flexible authorization is becoming more and more evident. The main drivers are the need by end users to share data across institutional boundaries, and the ability to specify new

The overall objective of the EU supported ELASSTI C project is to improve security, safety and re... more The overall objective of the EU supported ELASSTI C project is to improve security, safety and resilience of large scale mult ifunctional building complexes against natural and man-made disasters. T his improvement is done by providing a methodology and tools which evaluate criteria of security, safety, as well as other criteria, and apply them t o early design concepts and therefore planning phase of such projects. The deve lopment of a decision support tool based on Multi Criteria Analysis was cr eated to facilitate this. Using this tool, designers and stakeholders can see imm diate impact and trade-offs in design changes on the performance of the building. This paper is an explanation to the use of MCA tool and what the p ossibilities are regarding

In the Crisis Management (CM) domain, there is a need for quickly setting up a trial or exercise ... more In the Crisis Management (CM) domain, there is a need for quickly setting up a trial or exercise to test or train new or existing CM solutions and procedures. The EU-funded DRIVER+ project developed an open source cloudbased simulation framework, which provides a quick and easy way to connect simulators and (C2-like) solutions in such a way that they can efficiently exchange information between each other, and between simulators and solutions. It has already been used successfully in three CM trials, and in several Military battle labs proof-of-concepts.

SUMO2019:Editor's Preface This volume contains the papers presented at the SUMO Conference 20... more SUMO2019:Editor's Preface This volume contains the papers presented at the SUMO Conference 2019 Simulating Connected Urban Mobility. The conference was held in Berlin from 13-15 May 2019. The goal of the conference was to present new results in the field of mobility simulation and modelling using traffic tools and data which are open available.There were 32 submissions. Each submission was reviewed by at least 2 program committee members. The committee decided to accept 22 papers. Traffic simulations have a high value for traffic research studies. New traffic strategies can be tested and evaluated in advance with little costs. For realistic simulation results a complex traffic simulation framework is needed. One microscopic traffic simulation for this purpose is the open source tool Eclipse SUMO (Simulation of open mobility) which is available since 2001. SUMO provides a wide range of transport planning and modelling applications. The major topic of the 7th SUMO conference is th...

Internationally, the need for federated Identity & Access Management continues to grow, as it... more Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (a.k.a. Service Providers) using their home account and some attributes that are being released securely by their home organization (a.k.a. Identity Providers). In other words, it solves the problem of service providers needing to create and maintain accounts for external users who they may not know. Current implementations seem to either rely on SAML, the Security Assertion Markup Language, or PKI, where the latter is mainly popular for Grid services. However, there are some trends towards convergence, for example, the recent release of the Globus toolkit is SAML and XACML aware, and GridShib is another project that uses PKI for authentication and SAML for passing attributes for authorisation. Still, these projects do not use the full potential of SAML and XACML, so this paper focuses on a scalable approach using distributed attribute authorities to access Grid services.

In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Dr... more In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Driver+ test-bed, where XVR provides different learning environments for all levels of incident command, SE-Star handles crowd simulation and SUMO focuses on vehicular simulation and routing. With the test-bed and the provided services these simulation tools can synchronically exchange information with each other, creating a common simulation space that offers more possibilities for CM-training, trials and tests. A simulation scenario around the train station in Rotterdam, the Netherlands, is established for demonstration of the connected systems. © 2019, EasyChair. All rights reserved.

IFIP Advances in Information and Communication Technology

... 20, No 1, I998 Automated ECG segmentation with Dynamic Time Warping HJLM Vullings, MHGVerhaeg... more ... 20, No 1, I998 Automated ECG segmentation with Dynamic Time Warping HJLM Vullings, MHGVerhaegen, HB Verbruggen ... 0 2 0 4 0 6 3 0 20 40 0 60 IM 0 2 0 4 0 M Tim. I1 rmp W mucl O M 4 0 Tme I1 rmpbd mrcl Fig. 6. (1) is the addition of an extra layer: ...

In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Dr... more In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Driver+ test-bed, where XVR provides different learning environments for all levels of incident command, SE-Star handles crowd simulation and SUMO focuses on vehicular simulation and routing. With the test-bed and the provided services these simulation tools can synchronically exchange information with each other, creating a common simulation space that offers more possibilities for CM-training, trials and tests. A simulation scenario around the train station in Rotterdam, the Netherlands, is established for demonstration of the connected systems.

Journal of research and practice in information technology, 2007

Internationally, the need for federated Identity & Access Management continues to grow, as it... more Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (a.k.a. Service Providers) using their home account and some attributes that are being released securely by their home organization (a.k.a. Identity Providers). In other words, it solves the problem of service providers needing to create and maintain accounts for external users who they may not know. Current implementations seem to either rely on SAML, the Security Assertion Markup Language, or PKI, where the latter is mainly popular for Grid services. However, there are some trends towards convergence, for example, the recent release of the Globus toolkit is SAML and XACML aware, and GridShib is another project that uses PKI for authentication and SAML for passing attributes for authorisation. Still, these projects do not use the full potential of SAML and XACML, so this paper focuses on a scalable approach using distributed attribute authorities to access Grid services.

Lecture Notes in Computer Science, 1997

We present a method to segment the electrocardiogram (ECG) using time-warping, a technique common... more We present a method to segment the electrocardiogram (ECG) using time-warping, a technique commonly used in speech recognition. First, the ECG is transformed to a piecewise linear approximation. Next, the slope amplitude is used to cut the ECG into distinct periods (R-R interval). These periods are then compared to each other using timewarping, and the pair which is most similar

Abstract Internationally, the need for federated Identity & Access Management continues to gr... more Abstract Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (aka Service Providers) using their home account and some attributes that are being released securely ...

Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1997

... E. Vullings, A. J. Krijgsman, HB Verbruggen ... Abdtruci-The Intelligent Anesthesia Monitor (... more ... E. Vullings, A. J. Krijgsman, HB Verbruggen ... Abdtruci-The Intelligent Anesthesia Monitor (IAM) project aims to examine and implement the steps neces-sary to build an anesthesia monitor which advises an anes-thetist during an operation, alarms him only when nec-essary ...

Internationally, the need for federated Identity & Access Management continues to grow, as it all... more Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (a.k.a. Service Providers) using their home account and some attributes that are being released securely by their home organization (a.k.a. Identity Providers). In other words, it solves the problem of service providers needing to create and maintain accounts for external users who they may not know. Current implementations seem to either rely on SAML, the Security Assertion Markup Language, or PKI, where the latter is mainly popular for Grid services. However, there are some trends towards convergence, for example, the recent release of the Globus toolkit is SAML and XACML aware, and GridShib is another project that uses PKI for authentication and SAML for passing attributes for authorisation. Still, these projects do not use the full potential of SAML and XACML, so this paper focuses on a scalable approach using distributed a...

International Conference on Informatics in Control, Automation and Robotics, 2006

Many motion systems repeatedly follow the same trajectory. However, in many cases, the motion sys... more Many motion systems repeatedly follow the same trajectory. However, in many cases, the motion system does not learn from tracking errors obtained in a previous cycle. Iterative Learning Control (ILC) resolves this issue by compensating for previous tracking errors, but it suffers from not being able to distinguish between tracking errors caused by machine dynamics versus errors caused by noise, and by trying to 'learn' the noise, additional errors are introduced. In this paper we address this issue by using the servo error signal by identifying the time-varying nonlinear effects, which can be learned and therefore improve the position accuracy, versus the stochastic effects, which cannot be learned. The identification of these effects is performed by means of time-frequency analysis of the servo error and therefore our goal is to obtain a high-resolution time-frequency energy distribution of the analyzed signal. Here we compare the servo error energy distribution by three means: (1) Wigner distribution; (2) adaptive signal decomposition over one dictionary of modulated versions of wavelets (simple atomic dictionary); (3) and by means of combining several simple atomic dictionaries into a complex atomic dictionary. We show that the latter approach leads to the highest-resolution energy distribution and tracking performance.

Fedora's popularity amongst institutions is largely due to its scalability and flexibility t... more Fedora's popularity amongst institutions is largely due to its scalability and flexibility to handle a large variety of data types. With the increased take up rate, the need to support federated authentication and flexible authorization is becoming more and more evident. The main drivers are the need by end users to share data across institutional boundaries, and the ability to specify new

The overall objective of the EU supported ELASSTI C project is to improve security, safety and re... more The overall objective of the EU supported ELASSTI C project is to improve security, safety and resilience of large scale mult ifunctional building complexes against natural and man-made disasters. T his improvement is done by providing a methodology and tools which evaluate criteria of security, safety, as well as other criteria, and apply them t o early design concepts and therefore planning phase of such projects. The deve lopment of a decision support tool based on Multi Criteria Analysis was cr eated to facilitate this. Using this tool, designers and stakeholders can see imm diate impact and trade-offs in design changes on the performance of the building. This paper is an explanation to the use of MCA tool and what the p ossibilities are regarding

In the Crisis Management (CM) domain, there is a need for quickly setting up a trial or exercise ... more In the Crisis Management (CM) domain, there is a need for quickly setting up a trial or exercise to test or train new or existing CM solutions and procedures. The EU-funded DRIVER+ project developed an open source cloudbased simulation framework, which provides a quick and easy way to connect simulators and (C2-like) solutions in such a way that they can efficiently exchange information between each other, and between simulators and solutions. It has already been used successfully in three CM trials, and in several Military battle labs proof-of-concepts.

SUMO2019:Editor's Preface This volume contains the papers presented at the SUMO Conference 20... more SUMO2019:Editor's Preface This volume contains the papers presented at the SUMO Conference 2019 Simulating Connected Urban Mobility. The conference was held in Berlin from 13-15 May 2019. The goal of the conference was to present new results in the field of mobility simulation and modelling using traffic tools and data which are open available.There were 32 submissions. Each submission was reviewed by at least 2 program committee members. The committee decided to accept 22 papers. Traffic simulations have a high value for traffic research studies. New traffic strategies can be tested and evaluated in advance with little costs. For realistic simulation results a complex traffic simulation framework is needed. One microscopic traffic simulation for this purpose is the open source tool Eclipse SUMO (Simulation of open mobility) which is available since 2001. SUMO provides a wide range of transport planning and modelling applications. The major topic of the 7th SUMO conference is th...

Internationally, the need for federated Identity & Access Management continues to grow, as it... more Internationally, the need for federated Identity & Access Management continues to grow, as it allows users to get Single Sign-On access to external resources (a.k.a. Service Providers) using their home account and some attributes that are being released securely by their home organization (a.k.a. Identity Providers). In other words, it solves the problem of service providers needing to create and maintain accounts for external users who they may not know. Current implementations seem to either rely on SAML, the Security Assertion Markup Language, or PKI, where the latter is mainly popular for Grid services. However, there are some trends towards convergence, for example, the recent release of the Globus toolkit is SAML and XACML aware, and GridShib is another project that uses PKI for authentication and SAML for passing attributes for authorisation. Still, these projects do not use the full potential of SAML and XACML, so this paper focuses on a scalable approach using distributed attribute authorities to access Grid services.

In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Dr... more In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Driver+ test-bed, where XVR provides different learning environments for all levels of incident command, SE-Star handles crowd simulation and SUMO focuses on vehicular simulation and routing. With the test-bed and the provided services these simulation tools can synchronically exchange information with each other, creating a common simulation space that offers more possibilities for CM-training, trials and tests. A simulation scenario around the train station in Rotterdam, the Netherlands, is established for demonstration of the connected systems. © 2019, EasyChair. All rights reserved.

IFIP Advances in Information and Communication Technology

... 20, No 1, I998 Automated ECG segmentation with Dynamic Time Warping HJLM Vullings, MHGVerhaeg... more ... 20, No 1, I998 Automated ECG segmentation with Dynamic Time Warping HJLM Vullings, MHGVerhaegen, HB Verbruggen ... 0 2 0 4 0 6 3 0 20 40 0 60 IM 0 2 0 4 0 M Tim. I1 rmp W mucl O M 4 0 Tme I1 rmpbd mrcl Fig. 6. (1) is the addition of an extra layer: ...

In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Dr... more In this paper, the focus is put on the integration of XVR, SE-Star and SUMO simulators via the Driver+ test-bed, where XVR provides different learning environments for all levels of incident command, SE-Star handles crowd simulation and SUMO focuses on vehicular simulation and routing. With the test-bed and the provided services these simulation tools can synchronically exchange information with each other, creating a common simulation space that offers more possibilities for CM-training, trials and tests. A simulation scenario around the train station in Rotterdam, the Netherlands, is established for demonstration of the connected systems.