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Auflistung nach Schlagwort "resilience"

1 - 5 von 5
  • Konferenzbeitrag
    A Cross-Disciplinary Process Modelling Language for Validating Reconfigured Production Processes
    (Modellierung 2022, 2022) Koch, Sandro; Wunderlich, Tim; Hansert, Jonas; Schlegel, Thomas; Ihlenfeldt, Steffen; Heinrich, Robert
    Modelling and reconfiguration of production processes require knowledge across different domains. This in-depth knowledge is necessary to avoid possible side effects that could threaten the production plant, the workpiece or the worker. Therefore, process modelling approaches allow adding additional data to the steps of a process. Such additions can be constraints, which need to be fulfilled before a step can be executed. Upon reconfiguration of production processes, these constraints need to be validated to ensure that the objective of the process is still met. However, this task demands expertise in the field of process modelling as well as in the domain of the production process and the production plant. To the best of our knowledge, state-of-the-art production process modelling approaches are unable to determine the semantic validity of a reconfigured production process. In this paper, we introduce a domain-specific modelling language dedicated to model and validate constraints between production steps.With this approach, we aim to assist the operator in reconfiguring production processes. We evaluate this approach in three case studies and show that our approach can detect violated constraints in production processes.
  • Konferenzbeitrag
    Extending a Compiler Backend for Complete Memory Error Detection
    (Automotive - Safety & Security 2017 - Sicherheit und Zuverlässigkeit für automobile Informationstechnik, 2017) Rink, Norman; Castrillon, Jeronimo
    Technological advances drive hardware to ever smaller feature sizes, causing devices to become more vulnerable to faults. Applications can be protected against errors resulting from faults by adding error detection and recovery measures in software. This is popularly achieved by apply- ing automatic program transformations. However, transformations applied to intermediate program representations are fundamentally incapable of protecting against vulnerabilities that are introduced during compilation. In particular, the compiler backend may introduce additional memory accesses. This report presents an extended compiler backend that protects these accesses against faults in the memory system. It is demonstrated that this enables the detection of all single bit flips in memory. On a subset of SPEC CINT2006 the runtime overhead caused by the extended backend amounts to 1.50x for the 32-bit processor architecture i386, and 1.13x for the 64-bit architecture x86 64.
  • Konferenzbeitrag
    The Hofbox as a decentralised solution for agricultural operations
    (INFORMATIK 2023 - Designing Futures: Zukünfte gestalten, 2023) Weis, Martin; Bökle, Sebastian; Bauer, Christian
    In digital farming applications cloud-based software offers are predominantly used, which simplifies software and data handling, but lacks transparency of data storage and usage. Internet access becomes essential, which makes time-critical and weather-dependant applications dependent on internet connectivity posing risks for timely execution. To address these issues, a Hofbox concept is being developed that provides openly available software components on local computer hardware. It is based on a modular structure with automatically installable and configurable microservices. The Hofbox thus enables local data storage and processing as well as targeted data exchange via cloud systems that are organised in a decentralised manner. Machinery rings and farmers are targeted decentralised entities. The connected farm boxes are maintained according to an edge computing approach. All components are open source thus ensuring adaptability and expandability, focusing on the use of geodata for small and medium-sized farms.
  • Zeitschriftenartikel
    Practice Report “Smart Disaster Management” — Combining Smart City Data and Citizen Participation to Increase Disaster Resilience
    (i-com: Vol. 20, No. 2, 2021) Wessel, Daniel; Holtz, Julien; König, Florian
    Smart cities have a huge potential to increase the everyday efficiency of cities, but also to increase preparation and resilience in case of natural disasters. Especially for disasters which are somewhat predicable like floods, sensor data can be used to provide citizens with up-to-date, personalized and location-specific information (street or even house level resolution). This information allows citizens to better prepare to avert water damage to their property, reduce the needed government support, and — by connecting citizens locally — improve mutual support among neighbors. But how can a smart city application be designed that is both usable and able to function during disaster conditions? Which smart city information can be used? How can the likelihood of mutual, local support be increased? In this practice report, we present the human-centered development process of an app to use Smart City data to better prepare citizens for floods and improve their mutual support during disasters as a case study to answer these questions.
  • Textdokument
    Towards a Robust, Self-Organizing IoT Platform for Secure and Dependable Service Execution
    (Tagungsband des FB-SYS Herbsttreffens 2019, 2019) Eichhammer, Philipp; Berger, Christian; Reiser, Hans P.; Domaschka, Jörg; Hauck, Franz J.; Habiger, Gerhard; Griesinger, Frank; Pietron, Jakob
    In the IoT, resilience capabilities increasingly gain traction for applications, as IoT systems tend to play a bigger role for both the proper functioning of our society and the survivability of companies. However, hardening IoT service execution against a variety of possible faults and attacks becomes increasingly difficult as the complexity, size and heterogeneity of IoT infrastructures tend to grow further and further. Moreover, many existing solutions only regard either specific faults or security issues instead of following a unifying approach. In this position paper, we present our research project called SORRIR, which essentially is an approach to develop a self-organizing IoT platform for dependable and secure service execution. One of our main ambitions is to support developers by separating application development (app logic) from resilience properties, so that developers can configure a desired resilience degree without proper knowledge of underlying technical, implementation-level details of employed resilience mechanisms. Further, we consider security requirements and properties as an integral component of our platform.