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Auflistung nach Schlagwort "Architecture"

1 - 10 von 12
  • Konferenzbeitrag
    6th Workshop on Avionics Systems und Software Engineering (AvioSE'24)
    (Software Engineering 2024 (SE 2024), 2024) Reich, Marina; Annighoefer, Bjoern; Schweiger, Andreas
  • Konferenzbeitrag
    Adaptive Architectures for Robust Data Management Systems
    (BTW 2023, 2023) Bang, Tiemo
    Form follows function is a well-known expression by the architect Sullivan asserting that the architecture of a building should follow its function. 'Adaptive Architectures for Robust Data Management Systems' is a dissertation asserting that DBMS architectures should follow changing workload and hardware to robustly achieve high DBMS performance. The dissertation first evaluates how workload and hardware affect the performance of DBMSs with static architectures. This evaluation concludes that static DBMS architectures degrade DBMS performance under changing workload and hardware, and hence the DBMS architecture has to become adaptive. Subsequently, adaptation concepts for the architecture of single-server and multi-server DBMSs are proposed. These concepts focus fine-grained adaptation of DBMS architectures and are realized through asynchronous programming models. These programming models decouple the implementation of DBMS components from fine-grained architectural optimization. Thereby, optimizers can derive novel architectures better fitting individual DBMS components, leading to high and robust DBMS performance under changing conditions.
  • Konferenzbeitrag
    Architecture design for system-integrated business simulation games
    (INFORMATIK 2013 – Informatik angepasst an Mensch, Organisation und Umwelt, 2013) Kurbjuhn, Bastian; Turowski, Klaus
    Enterprise Resource Planning (ERP) systems are a substantial part of modern business. For this reason it is not astonishing that their complexity grows with assigned requirements. Therefore, it is vital and sustainable to invest into recruitment of new ERP experts. System-integrated (business) simulation games form a new educational approach adapting theoretical concepts on a practical framework. In this paper, an architectural design proposition for such systems is presented. First considerations revealed that several technical and organisational challenges have to be solved: e.g. the integration into the system landscape of a software provider, the communication through interfaces or the pedagogical objective. All those issues may influence one or multiple components or even the entire architecture itself.
  • Zeitschriftenartikel
    Architektur kontext-sensitiver mobiler Anwendungen
    (HMD Praxis der Wirtschaftsinformatik: Vol. 54, No. 6, 2017) Dörndorfer, Julian; Seel, Christian
    Mobile Endgeräte halten immer stärker Einzug in den beruflichen Alltag. Beispielsweise wird mittlerweile die Warenannahme in vielen Betrieben über Tablets abgewickelt oder die Nachbestellung von Waren aus den Supermarktregalen wird über mobile Endgeräte ausgeführt. Diese Entwicklung weg von stationären Computern hin zu mobilen Endgeräten und Anwendungen führt dazu, dass Geschäftsprozesse immer mobiler, das heißt ortsunabhängiger, werden. Gleichzeitig enthalten mobile Endgeräte eine Vielzahl von Sensoren, die auch nachgerüstet werden können. Zudem können weitere Datenquellen durch die Verbindung zum Internet abgefragt werden. Diese Vielzahl an Daten eröffnet die Möglichkeit, den Kontext einer mobilen Anwendung zu erkennen. Mithilfe des erkannten Kontextes kann die mobile Anwendung zur Laufzeit an den jeweiligen Ablauf adaptiert werden. Bezogen auf den Geschäftsprozess, den die jeweilige Anwendung unterstützt, bedeutet dies, dass Prozessschritte vorselektiert und dem Nutzer Informationen bedarfsgerechter präsentiert werden können. Beispielsweise können während eines Verkaufsprozesses bestimmte Schritte übersprungen werden, wenn sie nicht erforderlich oder redundant sind, wie das Erfassen der Kundendaten bei Bestandskunden. Somit sollen mobile Anwendungen den für den aktuellen Kontext irrelevanten Teil der Anwendung ausblenden und die relevanten Funktionen in den Vordergrund rücken. Um diesen Anforderungen gerecht zu werden, muss die bisher statische Architektur mobiler Anwendungen entsprechend neu gestaltet werden. Deshalb wird in diesem Artikel eine neue hybride Architektur zur Implementierung kontext-sensitiver mobiler Anwendungen vorgeschlagen und prototypisch umgesetzt, die es erlaubt mobile Anwendungen zur Laufzeit an den jeweiligen Kontext anzupassen.AbstractThe success and ubiquity of mobile devices like smartphones and tablet computers changed the daily work activities of many employees and employers. For example, the acceptance of goods in many companies is managed via tablet computers, or employees of supermarkets order new supply over mobile devices. This change from stationary computers to mobile devices and applications leads to more location independent business processes. In addition, mobile devices provide many built-in sensors, which can also be retrofitted. Additional data sources can be accessed wirelessly via the connection to the internet. This wide array of data enables to recognize the context of a mobile application. With the help of the recognized context it is feasible to adapt the mobile application to the particular process variation at runtime. The benefit for business processes is, that the particular application supports the process by preselecting process steps and presenting the user appropriate information. For example, some steps can be skipped during a billing process, if they are not necessary or redundant, like gathering customer information of existing clients. Therefore, applications on mobile devices have to be capable of concealing parts of the application and putting relevant parts or functions forward. To achieve these requirements, the current static architecture of mobile applications has to be remodeled. Therefore, this article proposes a new hybrid architecture for the implementation of mobile context-sensitive applications and a prototypical realization, which allows to adapt mobile applications to the current context at runtime.
  • Zeitschriftenartikel
    Catering to Real-Time Requirements of Cloud-Connected Mobile Manipulators
    (KI - Künstliche Intelligenz: Vol. 33, No. 2, 2019) Walter, Christoph; Scholle, Julian-Benedikt; Elkmann, Norbert
    In this contribution, we explore real-time requirements of mobile manipulators, a class of intelligent robots, in the context of the ongoing fast-robotics ( https://de.fast-zwanzig20.de/industrie/fast-robotics/ ) project. The project aims at implementing such robots based on (edge-) cloud-services using wireless communication in order to make them more capable and efficient. Instead of trying to universally achieve hard real-time in such a system, we present a mixed real-time approach with an application centered fault tolerance scheme based on transition points and pre-computed alternate plans. We argue that deliberatively addressing uncertainties in timing is similarly important than handling uncertainties e.g. in perception for future intelligent robots.
  • Konferenzbeitrag
    Development of a SysML Profile for Network Configurations in Safety-critical Systems
    (Modellierung 2022 Satellite Events, 2022) Hemmert, Andreas; Schweiger, Andreas
    The contribution describes an approach for defining avionics network architectures in an existing system model. To this end, a SysML profile is developed containing stereotypes to specify such a network. The corresponding model captures the network’s configuration. Such a configuration defines a network of a safety-critical complex system. As a result, systems engineers can use the profile in the systems development process with digital continuity. An example demonstrates the application of the profile in the model development.
  • Konferenzbeitrag
    Gaining Back the Control Over Identity Attributes: Access Management Systems Based on Self-Sovereign Identity
    (Open Identity Summit 2024, 2024) Keil, Kenneth-Raphael; Bochnia, Ricardo; Gudymenko, Ivan; Köpsell, Stefan; Anke, Jürgen
    Digital employee cards used for door access control offer benefits, but concerns about traceability, profiling and performance monitoring have led to opposition from workers’ councils and employees. However, the emerging identity management approach, Self-Sovereign Identity (SSI), can address these concerns by giving control over disclosed identity attributes back to the end user. This paper analyzes a real-world access management scenario in a hospital building and applies the SSI paradigm to address the identified issues. The analysis assumes a semi-honest observing attacker sniffing on the payload and the transport layer. The SSI-based proof of concept is shown to have a high potential to protect against traceability and profiling. However, in addition to the careful technical implementation of SSI, it is important to consider non-technical factors such as governance for a holistic solution. We propose potential strategies to further minimize privacy risks associated with SSI-based employee identity management using mediators.
  • Textdokument
    Die IT-Finanzarchitektur im Cloudumfeld
    (INFORMATIK 2020, 2021) Brockmann, Carsten; Schneider, Christian; Schmitz, Mario; Klingspor, Thomas
    Im Bereich des Architekturmanagements existiert eine Vielzahl von Architekturmodellen und branchenspezifischen Ausprägungen. In diesem Beitrag stellen wir einen Ansatz vor, mit dem die IT-Architektur der Finanzfunktion in einem Cloudumfeld dargestellt werden kann.
  • Zeitschriftenartikel
    Der Referenzarchitekturbegriff im Wandel der Zeit
    (HMD Praxis der Wirtschaftsinformatik: Vol. 55, No. 5, 2018) Reidt, A.; Pfaff, M.; Krcmar, H.
    Architekturbegriffe spielen in der Wirtschaftsinformatik eine immer prominentere Rolle. Ein Beleg dafür ist der Begriff der Referenzarchitektur, welcher in einer stetig ansteigen Anzahl an Publikationen verwendet wird. Besonders im Kontext des Begriffs „Industrie 4.0“ und unternehmensübergreifenden Digitalisierungsbestrebungen wird der Begriff der Referenzarchitektur verstärkt verwendet, um auf eine gewisse Art der Standardisierung hinzuwirken und die Komplexität bei der Entwicklung von Systemen zu reduzieren. Jedoch ist die Verwendung des Begriffs und das Begriffsverständnis sehr heterogen, sodass der Vergleich, die Bewertung, eine Ableitung oder das Erstellen von Referenzarchitekturen sehr erschwert wird. Um solchen Herausforderung zu begegnen wird in diesem Beitrag das Begriffsverständnis von Referenzarchitekturen systematisiert, mit dem Ziel, eine einheitliche Grundlage für dessen Beschreibung und zum Vergleich von Referenzarchitekturen bereitzustellen. Hierzu werden geläufige Definitionen in Wissenschaft und Praxis dargelegt, diskutiert und an Hand der verfolgten Ziele sowie den Ausprägungen und Eigenschaften von Referenzarchitekturen systematisiert. Diese Systematik bildet dabei die Basis um auch zukünftige Begriffe und Eigenschaften im Kontext von Referenzarchitekturen einzuordnen bzw. zu klassifizieren. Architectural concepts play an increasingly prominent role in information systems. Evidence of this is the concept of a reference architecture, which is used in a steadily increasing number of publications in practice and research. Especially in the context of Industry 4.0 and cross-company digitization efforts, the term is increasingly used to promote standardization efforts and to reduce the complexity of information system development. However, the use of the term and related terminologies is very heterogeneous, making comparisons, evaluations, derivations, or the creation of reference architectures very difficult. To provide the foundations for solving these challenges, this article systematizes the various definitions and concepts of reference architectures in order to provide a uniform basis for their description and comparison. For this purpose, common definitions in science and practice are presented and discussed. An overview of the pursued goals, characteristics and properties of reference architectures is systematically presented. Based on these characteristics, a classification is elaborated which leads to a uniform understanding of the term reference architecture.
  • Konferenzbeitrag
    Saving energy in production using mobile services
    (Software Engineering 2013 - Workshopband, 2013) Ruff, Christopher; Laufs, Uwe; Müller, Moritz; Zibuschka, Jan
    High energy costs have led to an increasing relevance of energyefficiency over the last few years. While new equipment is mostly designed to be energy-efficient, feasible action is needed to decrease energy consumption of existing equipment on the shop-floor level. As interventions there rely on dependable information and its use at the right time and place, involvement of ICT systems and particularly mobile devices becomes evident. In our approach, a system based on a SOA back end and a mobile device-based front end was implemented as a prototype. The system uses data provided by sensors, production orders and additional metadata describing specific properties of the production systems to provide decision support and to generate recommendations for the stakeholders to realize immediate as well as longer-term energy savings.