271 research outputs found

    A TOSCA-Based Conceptual Architecture to Support the Federation of Heterogeneous MSaaS Infrastructures †

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    Modeling and simulation (M&S) techniques are effectively used in many application domains to support various operational tasks ranging from system analyses to innovative training activities. Any (M&S) effort might strongly benefit from the adoption of service orientation and cloud computing to ease the development and provision of M&S applications. Such an emerging paradigm is commonly referred to as M&S-as-a-Service (MSaaS). The need for orchestrating M&S services provided by different partners in a heterogeneous cloud infrastructure introduces new challenges. In this respect, the adoption of an effective architectural approach might significantly help the design and development of MSaaS infrastructure implementations that cooperate in a federated environment. In this context, this work introduces a MSaaS reference architecture (RA) that aims to investigate innovative approaches to ease the building of inter-cloud MSaaS applications. Moreover, this work presents ArTIC-MS, a conceptual architecture that refines the proposed RA for introducing the TOSCA (topology and orchestration specification for cloud applications) standard. ArTIC-MS’s main objective is to enable effective portability and interoperability among M&S services provided by different partners in heterogeneous federations of cloud-based MSaaS infrastructure. To show the validity of the proposed architectural approach, the results of concrete experimentation are provided

    A Process Model for Continuous Public Service Improvement: Demonstrated in Local Government Context for Smart Cities.

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    The new era of the smart city is accompanied by Information and Communication Technology (ICT) and many other technologies to improve the quality of life for the citizen of the modern city, that in turn, has brought immense opportunities as well as challenges for government and organizations. Local authorities of the cities provide multiple services across different domains to the citizens (e.g. transport, health, environment, housing, etc.). Citizens are involved during different stages of smart city services and provide their feedback across those domains. Existing smart city initiatives provide various technological platforms for gathering citizens’ feedback to provide improved quality of services to them. Even though technological developments have resulted in a higher degree of digitalization, there is a need for improvement in the services provided by municipalities. There are multiple engagement platforms to obtain citizens’ feedback for the improvement of smart city services and to transform public services. However, limited studies consider the challenges faced by practitioners at the local level during the incorporation of those feedback for further service improvement. As a result, city services fail to fulfil the need of citizens and do not meet the goals set by existing engagement platforms. Technology-oriented solutions in the public sector domain require a logical and structured approach for the transformation of public services and digitalization. Enterprise Architecture (EA) can provide this structured approach to transform public services by providing a medium to manage change, and to respond to the need of multiple stakeholders including citizens. Thus, this research proposes a process model based on the guidelines of EA and the collaboration with practitioners that would assist local authorities to provide improved services to the citizens and fulfil their needs

    Updated Standard for Secure Satellite Communications: Analysis of Satellites, Attack Vectors, Existing Standards, and Enterprise and Security Architectures

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    Satellites play a vital role in remote communication where traditional communication mediums struggle to provide benefits over associated costs and efficiency. In recent years, satellite communication has achieved utter interest in the industry due to the achievement of high data rates through the massive deployment of LEO satellites. Because of the complex diversity in types of satellites, communication methodologies, technological obstacles, environmental limitations, elements in the entire ecosystem, massive financial impact, geopolitical conflict and domination, easier access to satellite communications, and various other reasons, the threat vectors are rising in the threat landscape. To achieve resilience against those, only technological solutions are not enough. An effective approach will be through security standards. However, there is a considerable gap in the industry regarding a generic security standard framework for satellite communication and space data systems. A few countries and space agencies have their own standard framework and private policies. However, many of those are either private, serve the specific requirements of specific missions, or have not been updated for a long time. This project report will focus on identifying, categorizing, comparing, and assessing elements, threat landscape, enterprise security architectures, and available public standards of satellite communication and space data systems. After that, it will utilize the knowledge to propose an updated standard framework for secure satellite communications and space data systems

    Introducing the Sectoral Enterprise Architecture Framework (SEAF)

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    Multiple enterprise architecture (EA) frameworks have been proposed to guide the alignment of business and information technologies. However, existing EA approaches were not yet tested to represent (as-is) and steer (to-be) the digital transformation of an entire industry sector. This research-in-progress aims to create a Sectoral Enterprise Architecture Framework (SEAF) to support the ongoing digital transformation in industry. SEAF emerges from a design science research project in cooperation with a national refrigeration and air conditioning association. The initial results include the design of SEAF structure and its deployment in a vital industry sector interested in revealing data and digital technologies’ role in ensuring sustainability for the coming years. A sectoral EA framework can be helpful to the mission of industry associations, guiding companies in planning, implementing, and migrating new technologies suitable to their supply chain

    Online-Based Management of New Student Admission Selection for Postgraduate Study Programs at State Islamic Colleges

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    Colleges are institutions that hold educational accounts. The role and information technology is in the management of human resources and students as the main customers in this education. The new student admissions information system is one of the information methods in higher education governance. Currently, the information technology infrastructure at UIN Sunan Gunung Djati Bandung is not sufficient to develop business process solutions using information systems. The purpose of this study is to create a new student information system architecture model by utilizing TOGAF ADM to describe business functions related to information systems. The design in this study uses the TOGAF model in the form of three parts. The first part is an analysis of the initial state of the organization, which includes Initial phase, requirements management, architectural vision, and business architecture. The second part discusses the enterprise architecture, which consists of two phases: information systems architecture and technology architecture. The third part is to find answers to enterprise architecture problems in the opportunities and solutions phase. The purpose of this research is to develop a strategy to ensure that the information system to be used is adaptable and that all activities related to new students are integrated with the information system. Blueprint vision of the new student admissions information system architecture is the need for a web-based information system. In addition, the blueprint business architecture and information systems architecture produce academic information systems that support the process of introducing new students. The blueprint technology architecture makes the design of the network infrastructure and server technology used. The blueprint of opportunities and solutions produces a solution gap analysis of the current system and an analysis of the results system that will be developed at UIN Sunan Gunung Djati Bandun

    Diseño e implementación de un sistema de gestión de modelos basado en la metodología ARCADIA en una herramienta PLM. Aplicación a la gestión de instrucciones de trabajo

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    El modelado de sistemas de ingeniería ha cobrado una gran importancia en los últimos años y se ha generado la necesidad de que los proyectos de ingeniería se desarrollen basados en modelados con el objetivo de gestionar todo el conocimiento en un proyecto de ingeniería. La principal característica de Model Based System Engineering es que no fija técnicas a emplear con lo que ha permitido desarrollar metodologías de modelado tales como SysML o la metodología ARCADIA. Estas metodologías permiten describir los sistemas con un gran nivel de detalle desde la fase de requisitos hasta su diseño e implementación. Los modelos desarrollados en base a las metodologías deben ser gestionados, es decir, deben disponer de un entorno que permita gestionar el ciclo de vida de los modelos. Los sistemas PLM (Product Lifecycle Management) son una de las herramientas más utilizadas en la gestión de todo el ciclo de vida de los productos. Este trabajo fin de máster se centra en analizar, diseñar e implementar un sistema gestión de modelos mediante la customización de un sistema PLM. En el trabajo, se empleará la metodología ARCADIA para el modelado del proceso de creación de instrucciones de trabajo y, posteriormente, dicho modelado se gestiona a través de la herramienta PLM, Aras Innovator, previo una customización. Este proyecto se divide en dos grandes secciones. Por un lado, se tiene el diseño y modelado de una instrucción de trabajo bajo la metodología ARCADIA en base a la herramienta Capella y por el otro lado, la creación de una interfaz a través de la customización de Aras Innovator de manera que las partes interesadas puedan acceder al contenido de los modelos siguiendo una jerarquía determinada. Para llevar a cabo la primera parte es necesario introducir los conceptos de ingeniería de sistemas, lenguajes, modelos, metodologías, en concreto el MBSE, los sistemas PLM y las herramientas que se suelen usar dentro del sector aeronáutico tanto para la metodología MBSE como para los sistemas PLM, puesto que estos serán la base del proyecto. Además, es necesario proporcionar una instrucción de trabajo para su aplicación. En la segunda parte, se pretende que, aunque en este documento se haya usado ARCADIA-Capella, pueda hacerse extensible a cualquier tipo de modelo en cualquier herramienta y bajo cualquier metodología o lenguaje. Para ello, se relacionará cada componente de los metamodelos con un componente de la aplicación Aras Innovator y se desarrollará un código que permita la generación automática de los mismos.The importance of the modeling of engineering systems has increased a lot in recent years. The need for developing based on the modeling has arisen for engineering projects with the aim of managing all the knowledge in an engineering project. The main characteristic of Model Based System Engineering is that it does not establish techniques to be used, which has allowed the development of modeling methodologies such as SysML or the ARCADIA methodology. These methodologies allow systems to be described with a high level of detail from the requirements phase to their design and implementation phases. The models developed based on this methodologies must be managed, that is, they must have an environment that allows managing the life cycle of the models. PLM (Product Lifecycle Management) systems are one of the most used tools in managing the whole life cycle of the products. This master's final project focuses on analyzing, designing and implementing a model management system through the customization of a PLM system. In this work, the ARCADIA methodology will be used to model the process of creating a work instructions and, subsequently, this modeling is managed through the PLM tool, Aras Innovator, after customization. This project is divided in two large sections. On the one hand, the design and modelling of a work instruction under the ARCADIA methodology based on the Capella tool and, on the other hand, the creation of an interface through the customization of Aras Innovator so that the stakeholders can access the content of the models following a certain hierarchy. To carry out the first part, it is necessary to introduce the concepts of system engineering, languages, models, methodologies, specially the MBSE, PLM systems and tools that are usually used within the aeronautical sector both for the MBSE methodology and for the PLM systems, since these will be the base of this project. Also, it is necessary to provide a work instruction for the application. In the second part, the intention is to extended to any type of model in any tool and under any methodology or language, although ARCADIA-Capella has been used in this document. To do this, each component of the metamodels will be connected to a component of the Aras Innovator application and a code that allows their automatic generation will be developed.Universidad de Sevilla. Máster en Ingeniería Aeronáutic

    Bridging The Gap: A Framework For Structuring The Asset Administration Shell In Digital Twin Implementation For Industry 4.0

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    The digital twin is a core technology for implementing Industry 4.0 scenarios in scientific and industrial applications. One upcoming variant of the digital twin is the concept of the asset administration shell, representing an approach to standardization. This approach must be adapted to specific use cases and applied in a target-oriented manner. However, no comprehensive guidance exists on structuring and implementing asset administration shells based on the digital twin in manufacturing environments. This issue pertains to defining and organizing the relevant data and mapping domain-specific limitations and characteristics within the hierarchical structure of the asset administration shell's components. This paper introduces an approach to structuring the asset administration shell to address this gap. This approach capitalizes on domain-specific expertise, industry standards, and established best practices, providing a framework. We validate the presented approach by applying it to the use case of distributed high-rate electrolyser production. The overarching objective of this research is to bridge the gap between theoretical concepts and practical applications

    Towards A Design Of A Software-Defined Manufacturing System Based On A Systematic Literature Review For Enabling A Decentralised High-Rate Electrolyser Production

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    Hydrogen is critical for the transition to an environmentally sound and reliable energy supply. This transition requires large capacities of performant and cost-effective electrolysers. Although performant electrolysers already exist, they cannot yet be manufactured at a high rate in series production. The project H2Giga-FRHY is researching a reference factory for large-scale production of electrolysers, developing new production and testing modules. As an essential building block of the reference factory, a research group at Fraunhofer IPA is designing and implementing a comprehensive software-defined manufacturing system (SDMS), which supports the decentralized high-rate production of electrolysers and allows for far-reaching insights regarding high-rate capability, quality, and cost of products, processes, and technologies involved. For the SDMS implementation, different enterprise architecture (EA) approaches are considered and evaluated in the scope of a structured literature review with respect to criteria arising from the project context and related research questions. In this paper, an approach to designing a software-defined manufacturing system is described, and its necessity is based on the use case-specific criteria discussed
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