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Auflistung nach Autor:in "Hacks, Simon"

1 - 10 von 10
  • Konferenzbeitrag
    Message from the Modellierung’22 Tools & Demos Chairs
    (Modellierung 2022 Satellite Events, 2022) Hacks, Simon; Bork, Dominik
    Modellierung 2022 has a dedicated track for the newest modeling tools. The aim of this track is to present modeling tools that have been and are being developed by the modeling community.
  • Zeitschriftenartikel
    Optimierung von Unternehmensarchitekturen unter Berücksichtigung von Transitionskosten
    (HMD Praxis der Wirtschaftsinformatik: Vol. 55, No. 5, 2018) Hacks, Simon; Lichter, Horst
    Unternehmensarchitekturen, die sich üblicherweise von der Geschäftsschicht über die Anwendungsschicht bis zur Infrastrukturschicht erstrecken, bieten eine Möglichkeit, die Geschäftsstrategie innerhalb der IT umzusetzen. Um dies erreichen zu können, werden Unternehmensarchitekturen kontinuierlich gepflegt. Dazu gehört unter anderem, dass unnötige Elemente aus der Unternehmensarchitektur entfernt werden und diese somit optimiert wird. In einem vorangegangenen Artikel haben wir bereits untersucht, wie auf Basis der Repräsentation einer Unternehmensarchitektur als Graph eine Optimierung ermittelt werden kann. Dieser Ansatz unterscheidet allerdings nicht, ob die Elemente dem Ist-Zustand zuzurechnen sind oder ihr Einsatz bisher nur geplant ist. Dementsprechend werden auch die notwendigen Transitionskosten, um vom Ist-Zustand zum optimalen Zustand zu gelangen, nicht berücksichtigt. Dies kann zu unwirtschaftlichen Ergebnissen führen. In dieser Arbeit stellen wir deswegen eine Erweiterung unseres Ansatzes vor, der notwendige Transitionskosten berücksichtigt. Dafür betrachten wir den aktuellen Stand der Unternehmensarchitektur und weisen jeder Änderung daran die zugehörigen Transitionskosten zu. Diese werden gegen die Betriebskosten aufgewogen, was zu wirtschaftlicheren Optimierungslösungen führt. IT becomes more and more important for business in the last decades. Simultaneous, the IT pervades the business more and more and becomes ubiquitous. This raises also the complexity of the information systems and their interrelations. With rising complexity of the information systems it becomes harder to ensure the IT/business alignment. One way to achieve the IT/business alignment is EA (Enterprise Architecture). One goal of EA is, for example, to consolidate the IT landscape. In our previous research, we developed an approach to optimize an EA with the means of linear programming, which can be applied to consolidate the IT landscape. However, this approach does not consider transition costs and, therefore, might produce uneconomical results. Within this paper, we suggest an extension of our previous work introducing transition costs. To do so, we take the as-is EA into account and apply transition costs to changes which are outweighed against operation costs. This leads to more economical optimization results.
  • Konferenzbeitrag
    Optimizing Enterprise Architecture Considering Different Budgets
    (INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft (Workshop-Beiträge), 2019) Dohmen, Niklas; Koopmann, Kevin; Hacks, Simon
    Enterprise Architectures (EA) are used to define the structure and operation of an organization and commonly find usage in the realization and modification of IT business strategies. We propose a technique to optimize the costs incurred between two layers of the EA, especially, considering differing departmental budgets. This is achieved through consideration of a flow problem aiming to optimize a graph consisting of different nodes, allowing budgets to be used by different departments. Additionally, we implement techniques previously published to allow operational and transitioning costs to be taken into consideration, in an effort to better reflect the organizational problems found in reality.
  • Textdokument
    Optimizing Enterprise Architectures Using Linear Integer Programming Techniques
    (INFORMATIK 2017, 2017) Hacks, Simon; Lichter, Horst
    Within this paper, we present a technique to optimize the relations between two adjacent layers of Enterprise Architectures (EA). Therefore, we suggest to interpret the constraints between these two layers as triangles, where a needed capability of an upper layer element is realized by a lower layer element. This eases the communication of the optimization model e.g. to the management. Moreover, we propose a mapping between the elements of our technique to the widely accepted ArchiMate notation to enable the application of our technique in existing organizations.
  • Konferenzbeitrag
    Qualitative Comparison of Enterprise Architecture Model Maintenance Processes
    (40 Years EMISA 2019, 2020) Hacks, Simon; Lichter, Horst
    Enterprise Architecture (EA) is no end in itself but has to provide central, important, and up-to-date information of the organization to its clients. So far, different researchers have elaborated on processes to ensure a (semi-)automated EA model maintenance. For practitioners this raises the question how the processes can be compared to each other. To answer this question, we identified a set of five quality criteria and asked EA researcher and practitioners to rate those for three processes.
  • Zeitschriftenartikel
    Qualitative Comparison of Enterprise Architecture Model Maintenance Processes.
    (EMISA Forum: Vol. 39, No. 1, 2019) Hacks, Simon; Lichter, Horst
  • Zeitschriftenartikel
    Towards a Quality Framework for Enterprise Architecture Models.
    (EMISA Forum: Vol. 38, No. 1, 2018) Hacks, Simon; Timm, Felix
  • Textdokument
    Towards a Threat Modeling Language for Vessel Navigation and Port Call Optimization - harborLang
    (EMISA 2024, 2024) Hacks, Simon
    This paper presents harborLang, a novel threat modeling language tailored for the maritime sector, built on the Meta Attack Language (MAL) framework. harborLang addresses the unique security challenges in maritime transport by enabling modeling and mitigation of potential threats. Through integrating specific maritime domain knowledge, harborLang empowers stakeholders to construct comprehensive threat models, enhancing decision-making and operational safety in seaports and vessel navigation.
  • Konferenzbeitrag
    Towards an Enterprise Architecture Model Evolution
    (Workshops der INFORMATIK 2018 - Architekturen, Prozesse, Sicherheit und Nachhaltigkeit, 2018) Hacks, Simon; Lichter, Horst
    One central aim of Enterprise Architecture (EA) is to keep the EA model up-to-date to provide recent information to its stakeholders. Based on EA information, projects develop their results, called solutions, which possibly affect the EA model. As the interaction between projects and EA is not always coordinated, wrong decisions can be taken and, consequently, solutions can be developed that do not conform to the EA. Therefore, we propose an enterprise architecture roundtrip process that guides the coordinated and project-driven distributed evolution of an EA model.
  • Konferenz-Abstract
    Using Knowledge Graphs to Detect Enterprise Architecture Smells
    (EMISA 2022, 2022) Hacks, Simon; Smajevic, Muhamed; Bork, Dominik