Browsing by Department "Informationstechnologie"

Case studies are proposed as a research method on knowledge visualization that can deal with the multidisciplinarity, the large variety of research targets and the complex correlations of this type of information visualization utilized for supporting tasks of knowledge management. A suitable case structure is presented that documents the analyzed cases and allows for a comparative analysis of multiple cases. To be able to systematically evaluate and compare the applied visualization techniques a set of evaluation criteria is introduced.

The marketplace of Enterprise 2.0 tools that support knowledge workers within companies to work together on cognitive tasks and share information and knowledge is diversified and offers commercial systems of varying complexity and functional range as well as open source software. Like commercial systems, open source tools for Enterprise 2.0 provide a broad range of functionality and offer a good alternative for organisations – especially for SMEs. This paper presents a study of the growing market for Enterprise 2.0 systems and focuses entirely on ones that are available under an open source license. We introduce a set of 97 individual features and criteria to assess a representative sample of open source Enterprise 2.0 tools. Our results show that the marketplace of open source tools for Enterprise 2.0 offers technically mature solutions with a broad range of functionality.

In Industry 4.0, Cyber-Physical Systems (CPS) are formed by components, which are interconnected with each other over the Internet of Things (IoT). The resulting capabilities of sensing and affecting the physical world offer a vast range of opportunities, yet, at the same time pose new security challenges. To address these challenges there are various IoT Frameworks, which offer solutions for managing and controlling IoT-components and their interactions. In this regard, providing security for an interaction usually requires performing additional security-related tasks (e.g. authorisation, encryption, etc.) to prevent possible security risks. Research currently focuses more on designing and developing these frameworks and does not satisfactorily provide methodologies for evaluating the resulting costs of providing security. In this paper we propose an initial approach for measuring the resulting costs of providing security for interacting IoT-components by using a Security Cost Modell ing Framework. Furthermore, we describe the necessary building blocks of the framework and provide an experimental design showing how it could be used to measure security costs at runtime.

Cyber-Physical Systems (CPS) are formed through interconnected components capable of computation, communication, sensing and changing the physical world. The development of these systems poses a significant challenge since they have to be designed in a way to ensure cyber-security without impacting their performance. This article presents the Security Cost Modelling Framework (SCMF) and shows supported by an experimental study how it can be used to measure, normalise and aggregate the overall performance of a CPS. Unlike previous studies, our approach uses different metrics to measure the overall performance of a CPS and provides a methodology for normalising the measurement results of different units to a common Cost Unit. Moreover, we show how the Security Costs can be extracted from the overall performance measurements which allows to quantify the overhead imposed by performing security-related tasks. Furthermore, we describe the architecture of our experimental testbed and demonstrate the applicability of SCMF in an experimental study. Our results show that measuring the overall performance and extracting the security costs using SCMF can serve as basis to redesign interactions to achieve the same overall goal at less costs.

Data Center (DC) network requirements. Virtualisation is one of the key drivers of that transformation and enables a massive deployment of computing resources, which exhausts server capacity limits. Furthermore, the increased network endpoints need to be handled dynamically and centrally to facilitate cloud computing functionalities. Traditional DCs barely satisfy those demands because of their inherent limitations based on the network topology. Software-Defined Networks (SDN) promise to meet the increasing network requirements for cloud applications by decoupling control functionalities from data forwarding. Although SDN solutions add more flexibility to DC networks, they also pose new vulnerabilities with a high impact due to the centralised architecture. In this paper we propose an evaluation framework for assessing the security level of SDN architectures in four different stages. Furthermore, we show in an experimental study, how the framework can be used for mapping SDN threats with associated vulnerabilities and necessary mitigations in conjunction with risk and impact classification. The proposed framework helps administrators to evaluate the network security level, to apply countermeasures for identified SDN threats, and to meet the networks security requirements.

Interactive infographics are a powerful tool to represent and communicate complex information. In data-driven journalism journalists use interactive infographics to explain new insights and facts while telling complex stories on the basis of retrieved data. However, readers of online news are still unexperienced while using interactive infographics. The results of a user survey among readers of online newspapers show how readers use and interact with interactive infographics in online newspapers. To improve the acceptance among users and to identify success factors of their utilization the results of a usability study of interactive infographics are presented.

In team collaboration we deal with collaboration among team members that may either belong to the same enterprise (intra-enterprise collaboration) or among team members belonging to different companies (e.g., in research projects). Social media provide an efficient and accessible means of encouraging and supporting team members working together on shared objects, i.e., performing collaborative tasks within these teams. Due to ease of use and access, especially small or medium-sized enterprises (SMEs) may profit a lot from social media in team collaboration. Based on a number of case studies on the application of social media in SMEs, we analyze the adoption and implementation, the motivation of team members and their benefit, and success factors of the utilization of social media for team collaboration. To provide a set of case studies that allow for detailed comparison and in-depth analysis of multiple case studies, a standardized case study structure is introduced.

As a result of OpenAI's ChatGPT, there has been increasing interest in AI and web-based natural language processing (NLP), including in academia. In this article, we provide an overview of the tools that can be used for academic purposes. The overview was conducted from the perspective of a university educator and was intended to guide educators in higher education on emerging AI technologies. The tools discussed ranged from searching the literature and attributions to peer-reviewed articles, scientific writing, and academic writing and editing. The objective is to foster an informed approach to the integration of AI tools in academic settings, ensuring that educators are well-equipped to leverage these technologies to enhance the quality and output of academic work.

Digitale Informations-Tools werden in allen Bereichen der Wissensübertragung und Informationsbeschaffung eingesetzt. Beginnend bei Ausbildungsinstituten bis hin zu privaten Unternehmen sind Mitarbeitende dieser Organisationen damit konfrontiert, derartige Tools für die jeweiligen Zielgruppen attraktiv zu gestalten. Bei dieser Gestaltung gilt es, zwischen der Zielgruppe der Digital-Natives und der Digital Non-Natives zu unterscheiden. Die Akzeptanz digitaler Tools ist seitens der Digital Non-Natives oft geringer als die der Digital Natives. Im Rahmen dieser Studie wurde aus diesem Grund der Frage nachgegangen, welche Faktoren die Akzeptanz digitaler Informations-Tools durch Digital Non-Natives beeinflussen. Verschiedene Technologieakzeptanz-Modelle, welche derartige Faktoren beinhalten, werden in dieser Studie diskutiert und in einem konkreten Fallbeispiel bei der Schaffung einer Informationsplattform in Form eines Online Help Centers angewendet. Diese Studie hat gezeigt, dass es wichtig ist, Akzeptanzfaktoren bei der Entwicklung von digitalen Informationsangeboten zu berücksichtigen und dass dadurch eine gesteigerte Akzeptanz des Angebots bei der Zielgruppe der Digital Non-Natives zu erwarten ist.

During the last decades artificial neural networks have evolved to an accepted and proven technology for modelling and function approximation. Different kinds of network architectures exist to support certain domains and applications in an efficient way. This paper assumes the traditional multilayer feedforward artificial neural network (ANN) architecture with one input layer, one or more fully interconnected hidden layers and one output layer. Each layer consists of several classic perceptron nodes using a differentiable transfer function like the logistics function. Very often it is useful to have an ANN model in an open equation form available, that allows a deeper analysis of the model and to do more complex experiments and simulations. The following paper presents an algorithm that makes it possible to transform an ANN into its open form equivalent, called process model architecture network or PMA network. It has been used as an integral part in several industrial control projects. A PMA network can be used for system simulation, scenario analyses or inverse model based control. An example application is discussed.

At a time when food procurement, food shortage, the stagnation in available arable land and rising population numbers are rising at an alarming rate, the importance of indoor farming is increasing. Indoor farming is an approach that allows fruits and vegetables to grow food in halls in racks, which gave birth to the term vertical farming. Vertical agriculture allows the optimization of food production by setting up adapted parameters in such a hall, thereby manipulating and boosting plant growth. However, since the necessary conditions for the growth can only be perfectly regulated for one type of plant per hall, it was considered to reduce the size of this unit and to design a box that provides the same functionality. In this paper I present a first prototype, which was designed as a Cyber Physical System (CPS), including power measurements of the included components. Furthermore, it demonstrates an economic approach for establishing this box in the Austrian economy based on a use case, followed by the advantages and disadvantages this change would entail. Finally, a calculation of expected costs in the first five years is presented.

We assume that each region has its own competitive advantage in growing certain grape varieties, as all varieties have different capabilities to cope with specific weather or climate conditions. In this paper we first analyze the effects of annual weather changes on yields in order to find, which weather is advantageous for which grape variety. This analysis should lead to some kind of ideal weather scenario for each grape variety (like dry and sunny with small rain etc.). In as second step the changing weather conditions in each region are reconciled with these scenarios in order to give recommendations where different grape varieties should be grown. In the third step we compare our recommendations with the distribution of grape varieties in South African wine regions and the uprooting and planting behavior of grape growers.

In diesem Vortrag werden unterschiedliche Studiengänge und Ausbildungsprogramme im Bibliotheks- und Wissensmanagement vorgestellt und verglichen. Anhand des Bachelor-Studiengangs Information, Medien & Kommunikation und des Master-Studiengangs Angewandtes Wissensmanagement der Fachhochschule Burgenland, des Universitätslehrgangs Library and Information Studies der Universität Wien und weiterer Ausbildungen in Österreich wird analysiert, was diese Programme eint und unterscheidet. Im Zentrum der Untersuchung steht die Frage wie viel Wissensmanagement im Bibliothekswesen steckt und wie viel Bibliothekswesen im Wissensmanagement enthalten ist. Diese Frage wird anhand von ausgewählten Ausbildungsprogrammen für diese verwandten Disziplinen beantwortet. Dazu wird untersucht, ob die Curricula Inhalte aus dem jeweilig anderen Fachgebiet beinhalten. Auf der inhaltlichen Ebene werden sowohl die Konzepte als auch die in der Ausbildung vermittelten Kenntnisse über Werkzeuge wie Wikis und Ordnungssysteme untersucht. Zusätzlich werden die Kompetenzprofile der Ausbildungsprogramme in Hinblick auf Überschneidungen analysiert.

The Internet of Things (IoT) is rapidly changing the number of connected devices and the way they interact with each other. This increases the need for an automated and secure onboarding procedure for IoT devices, systems and services. Device manufacturers are entering the market with internet connected devices, ranging from small sensors to production devices, which are subject of security threats specific to IoT. The onboarding procedure is required to introduce a new device in a System of Systems (SoS) without compromising the already onboarded devices and the underlying infrastructure. Onboarding is the process of providing access to the network and registering the components for the first time in an IoT/SoS framework, thus creating a chain of trust from the hardware device to its hosted software systems and their provided services. The large number and diversity of device hardware, software systems and running services raises the challenge to establish a generic onboarding procedure. In this paper, we present an automated and secure onboarding procedure for SoS. We have implemented the onboarding procedure in the Eclipse Arrowhead framework. However, it can be easily adapted for other IoT/SoS frameworks that are based on Service-oriented Architecture (SoA) principles. The automated onboarding procedure ensures a secure and trusted communication between the new IoT devices and the Eclipse Arrowhead framework. We show its application in a smart charging use case and perform a security assessment.

Entwicklung eines Tools zur Organisierung von Curricula / Modernisierung einer bestehenden IoT-Plattform bei FIB / Inventarmanagement / Pegelhub - Die zentrale Datendrehscheibe für Pegeldaten

Inventory Management / Pegelhub – Die zentrale Datendrehscheibe für Pegeldaten / Schulgong – Neuentwicklung des altbekannten Pausengongs / Digitalisierung der Auswertung des Wissenstests der Feuerwehrjugend / Einrichtung einer Zeitreihendatenbank mit Benutzeroberfläche bei der FB

My Digital Profile / Hausübungsplattform mit Gamification / Typecode Registry / Pegelhub / RePro3D / Dokumentenmanagement

gAmIcode / Elektroauto Lade-App / I NEED HELP / VoiceArt / Atlas der Klima-bezogenen-Gesundheitsrisiken / NEXUS / Pegelhub / Klima-Gesundheitsplanspiel Burgenland

Die Dominanz von digitalem Content und Digitalisierungsmaßnahmen verändern die Berufswelt von Beschäftigten in Bibliotheken. Die dafür benötigten digitalen Kompetenzen erfordern ständige Adaptierungen in den Ausbildungsprogrammen. Allerdings unterliegen diese Ausbildungsprogramme mehreren Spannungsfeldern, um aktuelle Ausbildungsinhalte anbieten zu können. Unterschiedliche Spannungsfelder, unter anderem Spezialisierung vs. breite Wissensbasis, der Anteil an Informationstechnologien, eine Schwerpunktsetzung im Informationsmanagement oder der Bedarf an einem offenen, erweiterten Kompetenzspektrum, werden diskutiert.