Publications

• Originalarbeiten in wissenschaftlichen Fachzeitschriften
• Monographien
• Buchbeiträge
• Konferenzbeiträge

Originalarbeiten in wissenschaftlichen Fachzeitschriften

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2014

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• Rechert Klaus, von Suchodoletz Dirk, Valizada Isgandar, Latocha Johann, Jimenez Cardenas Tatiana, Kulzhabayev Alibek
  Take Care of Your Belongings Today - Securing Accessibility to Complex Electronic Business Processes
  2014 Electronic Markets - The International Journal on Networked Business, Springer, Band: 24, Nummer: 2, Seiten: 125 - 134

2013

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• Rechert Klaus, Meier Konrad, Zahoransky Richard, Wehrle Dennis, von Suchodoletz Dirk, Greschbach Benjamin, Wohlgemuth Sven, Echizen Isao
  Reclaiming Location Privacy in Mobile Telephony Networks — Effects and Consequences for Providers and Subscribers
  2013 Systems Journal, IEEE, Band: PP
• Andrienko Gennady, Gkoulalas-Divanis Aris, Gruteser Marco, Kopp Christine, Liebig Thomas, Rechert Klaus
  Report from Dagstuhl
  2013 New York, NY, USA SIGMOBILE Mob. Comput. Commun. Rev., ACM, Band: 17, Seiten: 7 - 18
• von Suchodoletz Dirk, Guttenbrunner Mark, Rechert Klaus
  Report on the First iPres Workshop on Practical Emulation Tools and Strategies
  2013 D-Lib Magazine, Band: 19
• von Suchodoletz Dirk, Rechert Klaus, Valizada Isgandar
  Towards Emulation-as-a-Service – Cloud Services for Versatile Digital Object Access
  2013 International Journal of Digital Curation, Band: 8, Seiten: 131 - 142

2012

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• von Suchodoletz Dirk, Rechert Klaus, van der Werf Bram
  Long-term Preservation in the Digital Age - Emulation as a Generic Preservation Strategy
  2012 PIK - Praxis der Informationsverarbeitung und Kommunikation, Band: 35, Nummer: 4, Seiten: 225 - 226
• Rechert Klaus, Valizada Isgandar, von Suchodoletz Dirk, Latocha Johann
  bwFLA – A Functional Approach to Digital Preservation
  2012 PIK - Praxis der Informationsverarbeitung und Kommunikation, Band: 35, Nummer: 4, Seiten: 259 - 267

2011

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• von Suchodoletz Dirk, Rechert Klaus, Welte Randolph, van den Dobbelsteen Maurice, Roberts Bill, van der Hoeven Jeffrey, Schroder Jasper
  Automation of Flexible Migration Workflows
  2011 International Journal of Digital Curation, Band: 6, Nummer: 1, Seiten: 183 - 198
  » Kurzfassung anzeigen« Kurzfassung verbergen
  Kurzfassung

  Many digital preservation scenarios are based on the migration strategy, which itself is heavily tool-dependent. For popular, well-defined and often open file formats – e.g., digital images, such as PNG, GIF, JPEG – a wide range of tools exist. Migration workflows become more difficult with proprietary formats, as used by the several text processing applications becoming available in the last two decades. If a certain file format can not be rendered with actual software, emulation of the original environment remains a valid option. For instance, with the original Lotus AmiPro or Word Perfect, it is not a problem to save an object of this type in ASCII text or Rich Text Format. In specific environments, it is even possible to send the file to a virtual printer, thereby producing a PDF as a migration output. Such manual migration tasks typically involve human interaction, which may be feasible for a small number of objects, but not for larger batches of files. We propose a novel approach using a software-operated VNC abstraction layer in order to replace humans with machine interaction. Emulators or virtualization tools equipped with a VNC interface are very well suited for this approach. But screen, keyboard and mouse interaction is just part of the setup. Furthermore, digital objects need to be transferred into the original environment in order to be extracted after processing. Nevertheless, the complexity of the new generation of migration services is quickly rising; a preservation workflow is now comprised not only of the migration tool itself, but of a complete software and virtual hardware stack with recorded workflows linked to every supported migration scenario. Thus the requirements of OAIS management must include proper software archiving, emulator selection, system image and recording handling. The concept of view-paths could help either to automatically determine the proper pre-configured virtual environment or to set up system images for certain migration workflows. View-paths may rise in demand, as the generation of PDF output files from Word Perfect input could be cached as pre-fabricated emulator system images. The current groundwork provides several possible optimizations, such as using the automation features of the original environments.

2010

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• Rechert Klaus
  Privatsphäre im Kontext mobiler Dienste
  2010 Praxis der Informationsverarbeitung und Kommunikation, Band: 33, Nummer: 3, Seiten: 220 - 226
• Rechert Klaus, von Suchodoletz Dirk
  Tackling the Problem of Complex Interaction Processes in Emulation and Migration Strategies
  2010 ERCIM News, Band: 2010, Nummer: 80, Seiten: 22 - 23

Monographien

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2013

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• Freiburger Dokumentenserver (FreiDok)
  Sharing location information with trusted peers: a user-centric analysis of location privacy
  Rechert Klaus

Buchbeiträge

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2016

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• Rechert Klaus, Liebetraut Thomas, Wehrle Dennis, Cochrane Euan
  Preserving Containers–Requirements and a Todo-List
  In: Digital Libraries: Knowledge, Information, and Data in an Open Access Society
  2016, Springer, Seiten: 225 - 230,

2012

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• Zhou Rui, Rechert Klaus, von Suchodoletz Dirk
  Design Guidelines for Privacy Preserving in Context-Aware Services
  In: Current Issues in IT Security 2012
  2012, Dunker & Humblot, Seiten: 171 - 181,
• Rechert Klaus, Zahoransky Richard, Meier Konrad, Wehrle Dennis, von Suchodoletz Dirk
  Reliability and Trustworthiness of GSM Location Data
  In: Current Issues in IT Security 2012
  2012, Dunker & Humblot, Seiten: 25 - 36,

Konferenzbeiträge

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2014

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• Stobbe Oleg, von Suchodoloetz Dirk, Rechert Klaus
  Demonstration of an Integrated System for Platform-independent Description of HumanMachine Interactions
  2014 Proceedings of the 11th International Conference on Digital Preservation (iPres14), State Library of Victoria
• Rechert Klaus, von Suchodoletz Dirk, Liebetraut Thomas, de Vries Denise, Steinke Tobias
  Design and Development of an Emulation-Driven Access System for Reading Rooms
  2014 Archiving 2014 – Conference Proceedings, Society for Imaging Science and Technology, Seiten: 126 - 131
• Cochrane Euan, von Suchodoloetz Dirk, Rechert Klaus
  Developing costing models for emulation based access in scientific libraries
  2014 Proceedings of the 11th International Conference on Digital Preservation (iPres14), State Library of Victoria, Seiten: 51 - 58
• Liebetraut Thomas, Rechert Klaus, Valizada Isgandar, Meier Konrad, von Suchodoletz Dirk
  Emulation-as-a-Service - The Past in the Cloud
  2014 Cloud Computing (CLOUD), 2014 IEEE 7th International Conference on, Seiten: 906 - 913
• Wehrle Dennis, Liebetraut Thomas, Valizada Isgandar, Rechert Klaus
  Emulation-as-a-Service - Workflows and Infrastructure to Support Recomputable Science
  2014 Proceedings of the 7th IEEE/ACM International Conference on Utility and Cloud Computing, UCC 2014, London, United Kingdom, December 8-11, 2014, Seiten: 962 - 967
• Valizada Isgandar, Rechert Klaus, von Suchodoletz Dirk
  Emulation-as-a-Service – Requirements and Design of Scalable Emulation Services for Digital Preservation
  2014 Hochleistungsrechnen in Baden-Württemberg – Ausgewählte Aktivitäten im bwGRiD, KIT Scientific Publishing, Seiten: 103 - 115
• Bähr Thomas, Lindlar Michelle, Rechert Klaus, Liebetraut Thomas
  Functional Access to Electronic Media Collections using Emulation-as-a-Service
  2014 Proceedings of the 11th International Conference on Digital Preservation (iPres14), State Library of Victoria
• Liebetraut Thomas, Rechert Klaus
  Management and Orchestration of Distributed Data Sources to Simplify Access to Emulationas-a-Service
  2014 Proceedings of the 11th International Conference on Digital Preservation (iPres14), State Library of Victoria, Seiten: 101 - 109
• Wehrle Dennis, Liebetraut Thomas, Rechert Klaus
  Preservation of Web Content – An Emulation-based Case Study
  2014 Proceedings of the 11th International Conference on Digital Preservation (iPres14), State Library of Victoria

2013

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• Rechert Klaus, Espenschied Dragan, Valizada Isgandar, Liebetraut Thomas, Russler Nick, von Suchodoletz Dirk
  An Architecture for Community-based Curation and Presentation of Complex Digital Objects
  2013 Digital Libraries, Springer, Seiten: 103 - 112
• Valizada Isgandar, Rechert Klaus, Meier Konrad, Wehrle Dennis, von Suchodoletz Dirk, Sabel Leander
  Cloudy Emulation - Efficient and Scaleable Emulation-based Services
  2013 iPres 2013 10th International Conference on Preservation of Digital Objects, Biblioteca Nacional de Portugal
• von Suchodoletz Dirk, Klaus Rechert
  Efficient Access to Emulation-as-a-Service - Challenges and Requirements
  2013 Research and Advanced Technology for Digital Libraries - International Conference on Theory and Practice of Digital Libraries, TPDL 2013, Springer, Seiten: 409 - 412
• von Suchodoletz Dirk, Rechert Klaus, Valizada Isgandar, Strauch Annette
  Emulation as an Alternative Preservation Strategy – Use-Cases, Tools and Lessons Learned
  2013 NESTOR Workshop Langzeitarchivierung, INFORMATIK 2013, LNI/GI, Seiten: 592 - 606
  
   
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• Zahoransky Richard, Semaan Saher, Rechert Klaus
  Identity and Access Management for Complex Research Data Workflows
  2013 6. DFN-Forum Kommunikationstechnologien, GI, Band: 217, Seiten: 107 - 117
• Espenschied Dragan, Rechert Klaus, Valizada Isgandar, von Suchodoletz Dirk, Russler Nick
  Large-Scale Curation and Presentation of CD-ROM Art
  2013 iPres 2013 10th International Conference on Preservation of Digital Objects, Biblioteca Nacional de Portugal
• Rechert Klaus
  Location Sharing with Trusted Peers – Measuring Sensitivity of Location Observations
  2013 Mobile Data Management (MDM), 2013 IEEE 14th International Conference on, Band: 2, Seiten: 73 - 78
• Latocha Johann, Rechert Klaus, Echizen Isao
  Securing Access to Complex Digital Artifacts - Towards a Controlled Processing Environment for Digital Research Data
  2013 Research and Advanced Technology for Digital Libraries - International Conference on Theory and Practice of Digital Libraries, TPDL 2013, Springer, Seiten: 315 - 320

2012

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• Valizada Isgandar, Rechert Klaus, von Suchodoletz Dirk, Schmelzer Sebastian
  An Integrated System-Preservation Workflow
  2012 Proceedings of the 9th International Conference on Preservation of Digital Objects (iPRES2012), University of Toronto Faculty of Information, Seiten: 340 - 341
• Zahoransky Richard, Rechert Klaus, Meier Konrad, Wehrle Dennis, von Suchodoletz Dirk
  Cellular Location Determination - Reliability and Trustworthiness of GSM Location Data
  2012 ARCS 2012 Workshops, GI, Band: 200, Seiten: 63 - 73
• Rechert Klaus, Valizada Isgandar, von Suchodoletz Dirk
  Future-Proof Preservation of Complex Software Environments
  2012 Proceedings of the 9th International Conference on Preservation of Digital Objects (iPRES2012), University of Toronto Faculty of Information, Seiten: 179 - 183
• Rechert Klaus, von Suchodoletz Dirk, Valizada Isgandar
  bwFLA – Practical Approach to Functional Access Strategies
  2012 Proceedings of the 9th International Conference on Preservation of Digital Objects (iPRES2012), University of Toronto Faculty of Information, Seiten: 327 - 328

2011

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• Rechert Klaus, Meier Konrad, Benjamin Greschbach, Wehrle Dennis, von Suchodoletz Dirk
  Assessing Location Privacy in Mobile Communication Networks
  2011 LNCS: Information Security, Springer, Heidelberg, Band: 7001, Seiten: 309 - 324
• Rechert Klaus, Meier Konrad, Wehrle Dennis, von Suchodoletz Dirk
  Location Privacy in Mobile Telephony Networks – Conflict of Interest between Safety, Security and Privacy
  2011 Internet of Things (iThings/CPSCom), 2011 International Conference on and 4th International Conference on Cyber, Physical and Social Computing, Seiten: 508 - 513
• Rechert Klaus, Greschbach Benjamin
  Location Privacy in Relation to Trusted Peers
  2011 ERCIM Seventh International Workshop on Security and Trust (STM11), Springer
• Rechert Klaus, von Suchodoletz Dirk, Valizada Isgandar
  Migration-by-Emulation Planets Web-Service
  2011 iPRES 2011 - 8th International Conference on Preservation of Digital Objects, Singapore, November 1-4, 2011, Seiten: 248 - 249
  » Kurzfassung anzeigen« Kurzfassung verbergen
  Kurzfassung

  The availability of migration tools for older formats is often limited. Thus we suggest a different approach: using the original applications to access the object and transfer the latter into formats which can be accessed in today’s environments. The appropriate environment for the digital artefacts could be provided through emulation. With the reproduction of the original environment, a large and diverse set of migration input/output paths becomes available. Working for the Open Planets Project the authors the authors created remotely accessible Web services integrated into the PLANETS testbed. These services demonstrate preservation workflows using migration together with the emulation of original environments.
• von Suchodoletz Dirk, Rechert Klaus, Tchayep Nana Achille, Müller Wolfgang, Pétrot Frederic
  QEMU - A Crucial Building Block in Digital Preservation Strategies
  2011 1st International QEMU Users' Forum, W. Mueller, F. Pétrot, Seiten: 23 - 28
  » Kurzfassung anzeigen« Kurzfassung verbergen
  Kurzfassung

  Emulation as long-term preservation strategy depends on usable, reliable and sustainable emulators to preserve old or obsolete original digital environments. The most common approach to achieve this is to preserve the hardware layer of the different computer architectures. The open source project QEMU is in many ways a digital preservation tool that the community of memory institutions depends on. The requirements for emulation in preservation differ from those that exist for most virtualization tasks. QEMU has to bridge a widening gap between past and current digital environments by keeping the emulated hardware constant and reliable over time. To ensure reliability special test suites should be run on updated versions of QEMU. A number of software and unit tests could be run totally automated using the QEMU VNC and monitor interfaces on prepared system images of all preservation relevant original environments. QEMU as a cooperative endeavor should extend its user base into the digital preservation domain. It could bring financial) support and thus foster more sustainability.
• Schmelzer Sebastian, von Suchodoletz Dirk, Rechert Klaus
  Reading Room Prototype Emulation Based Object Access
  2011 iPRES 2011 - 8th International Conference on Preservation of Digital Objects, Singapore, November 1-4, 2011, Seiten: 246 - 247
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  Kurzfassung

  The electronic collections of today’s libraries, museums and archives are growing and increasingly have a more relevant role in the holdings. Memory institutions must address users’ need to access a widening range of digital artefacts. Often the formats of those artefacts are outdated and they cannot be run or rendered on today’s systems any longer. This is where emulation can provide the required digital environments suitable for a given object type. Practical research is being done at Freiburg University for the Open Planets Foundation on how to integrate different emulators for a number of original environments into a single graphical desktop. In this case study, options for future reading room systems like stateless Linux workstations are evaluated and prototypical implementations are demonstrated.
• von Suchodoletz Dirk, Rechert Klaus, Valizada Isgandar
  Remote Emulation for Migration Services in a Distributed Preservation Framework
  2011 iPRES 2011 - 8th International Conference on Preservation of Digital Objects, Singapore, November 1-4, 2011, Seiten: 158 - 166
• Meier Konrad, Wehrle Dennis, Rechert Klaus, von Suchodoletz Dirk
  Testbed for Mobile Telephony Networks
  2011 ARES, IEEE Computer Society, Band: 0, Seiten: 661 - 666
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  Kurzfassung

  Mobile telephony and mobile communication are both crucial and critical infrastructures for today’s society and contribute to its security and safety. In contrast to landline telephony with its physically protectable medium, mobile telephony utilizes air and electromagnetic waves as communication medium, which cannot be easily protected. Due to the specific design and the openly shared medium, mobile communication infrastructure is particularly vulnerable to threats linked to a wide range of security issues and failures caused by overload and blocking. Especially in critical situations like human stampede or natural disasters, the network could break down while remaining physically intact. That is contrary to the desired behavior in catastrophe scenarios, as the infrastructure is meant to provide emergency call functionality and communication for the rescue teams. While traditional usage scenarios even for major events are well researched, there is a lack of knowledge on how to make mobile telephony networks more resilient to unpredictable load in disaster events. We propose a test environment to analyze such scenarios using the example of GSM mobile telephony networks. Furthermore, we identify relevant network parameters and discuss their impact on network resilience. The resulting test bed is based on real hardware and open-source software in order to create a realistic and defined environment which includes all aspects of the air interface in mobile telephony networks and is capable of simulating an overload situation in a defined and fully controlled environment.
• Rechert Klaus, Wohlgemuth Sven, Echizen Isao, Sonehara Noboru
  User Centric Privacy in Mobile Communication Scenarios
  2011 Applications and the Internet (SAINT), 2011 IEEE/IPSJ 11th International Symposium on, Seiten: 202 - 207
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  Kurzfassung

  One common assumption when defining location privacy metrics is that one is dealing with attackers whose objective is to re-identify an individual out of an anonymized data set. However, today’s communication scenarios are more diverse. For instance, there are several entities involved in mobile location sharing between individuals. Hence, in a communication relation with a service provider (e.g. SNS or network infrastructure) or with social contacts, an anonymity approach seems inadequate. Between each user and every single entity involved there is some level of trust and the identities are already known, at least to some extent. Hence, taking an anonymity approach for communication relations to peers or service providers (e.g. SNS or network infrastructure) seems to be inadequate. Therefore, we present an attacker model and propose a user-centric privacy metric to allow a user to uncover the extent of information disclosure and to evaluate autonomously his privacy level in a communication relation with semi-trusted listener groups. The goal of such a metric is to enable an individual to estimate the privacy loss caused by disclosing location information in a specific communication scenario and thus enabling the user to make informed choices, e.g. choose the right protection mechanism.

2010

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• Rechert Klaus
  Challenges and Success Criteria for Mobile Services in Tourism
  2010 Information and Communication Technologies in Tourism (ENTER ’10). The 17th International Conference on, e-Review of Tourism Research (eRTR), TX, USA
• Rechert Klaus, von Suchodoletz Dirk, Welte Randolph
  Emulation based services in digital preservation
  2010 JCDL’10: Proceedings of the 10th annual joint conference on Digital libraries, ACM, Seiten: 365 - 368
• Rechert Klaus, von Suchodoletz Dirk, Welte Randolph, Ruzzoli Felix, Valizada Isgandar
  Reliable preservation of interactive environments and workflows
  2010 Proceedings of the 14th European conference on Research and advanced technology for digital libraries, Springer-Verlag, Seiten: 494 - 497
• von Suchodoletz Dirk, Rechert Klaus, van der Hoeven Jeffrey, Schröder Jasper
  Seven Steps for Reliable Emulation Strategies - Solved Problems and Open Issues
  2010 Proceedings of the 7th International Conference on Preservation of Digital Objects (iPRES2010), Austrian Computer Society, Seiten: 373 - 381
• von Suchodoletz Dirk, Rechert Klaus, van den Dobbelsteen Maurice
  Software archives as a vital base for digital preservation strategies
  2010 The 5th International Conference on Open Repositories Madrid Spain 6th - 9th July 2010, Madrid, Spain, 6th - 9th July 2010
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  Kurzfassung

  Software archives are vital parts in long-term preservation strategies of digital artifacts because almost every digital preservation strategy depends on additional software components. At this point a software archive becomes important. Such a repository should not only store ancient applications and special object dependencies like fonts or required helper tools, but also meta data like operation manuals, license keys and knowledge of operating ancient user environments. This article describes the challenges of establishing and managing software archives and presents a constructive approach which can be integrated in existing preservation frameworks. Furthermore, the suggested approach offers the possibility to interactively ingest software components into the archive and enrich it with sufficient meta data.

2009

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• Rechert Klaus
  MobIS: A pragmatic framework for location based services
  2009 Positioning, Navigation and Communication, 2009. WPNC 2009. 6th Workshop on, Seiten: 141 - 144
• Rechert Klaus, von Suchodoletz Dirk, Welte Randolph, van den Dobbelsteen Maurice, Roberts Bill, van der Hoeven Jeffrey, Schroder Jasper
  Novel Workflows for Abstract Handling of Complex Interaction Processes in Digital Preservation
  2009 Preservation of Digital Objects, 2009. iPres ’09. The Sixth International Conference on, California Digital Library, Seiten: 155 - 162
• Welke Konstantin, Rechert Klaus
  Spontaneous Privacy-Aware Location Sharing
  2009 Pervasive Computing and Applications, 2009. ICPCA ’09. The Fourth International Conference on, Seiten: 395 - 398
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  Kurzfassung

  We propose a privacy conserving protocol to share location information with groups of trusted agents (e.g. friends) using a mobile device. All information published by the user is cryptographically secured and authenticated. Furthermore, we employ methods to make it hard for third parties to derive a user’s relationships from communication patterns. Users can create multicast groups spontaneously and maintain these efficiently. In contrast to previous solutions, our approach does not rely on any dedicated or trusted network infrastructure for coordination or communication. For our prototype implementation messages are pushed to the listening group members with low overhead, by using existing publicly available and accessible communication infrastructure (IRC). Finally, we present a cost and privacy analysis of the proposed protocol.

2008

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• Zhou Rui, Rechert Klaus
  Personalization for Location-Based E-Learning
  2008 Next Generation Mobile Applications, Services and Technologies, 2008. NGMAST ’08. The Second International Conference on, IEEE, Seiten: 247 - 253
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  Kurzfassung

  Personalization has proven to be of significant value to educational systems, which provide learning contents tailored to the knowledge, interests and other characteristics of the learners. Location-based E-Learning raises new opportunities and challenges in this field, as learning activities become mobile and location-aware. Integration of personalization and location-awareness even context-awareness will greatly improve the effectiveness of E-Learning. In this paper, we introduce the process of personalization for location-based E-Learning, discuss the personalization techniques regarding learning context modeling, content organization and selection, recommendations and ranking as well as personalized multimedia presentation. A prototypical application is presented at the end of the paper.

2005

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• Weigel Thilo, Rechert Klaus, Nebel Bernhard
  Behavior Recognition and Opponent Modeling for Adaptive Table Soccer Playing
  2005 LNCS: KI, Springer, Band: 3698, Seiten: 335 - 350
• Rechert Klaus, Trahasch Stephan
  Personalisierte Sichten auf Vorlesungsaufzeichnungen
  2005 Workshop Proceedings DeLFI 2005 und GMW05

2004

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• Weigel Thilo, Zhang Dapeng, Rechert Klaus, Nebel Bernhard
  Adaptive Vision for Playing Table Soccer
  2004 LNCS: KI, Springer, Band: 3238, Seiten: 424 - 438