Informationstechnologie
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- Publication20 Tools für den Unterricht die Sie noch nicht kennenIn diesem Vortrag werden 20 "neue" Tools für den Unterricht und ihre didaktischen Einsatzmöglichkeiten vorgestellt: Classromscreen, DeepL, Open edX, Hootsuite, nuzzel, Feedly, Talkwalker Alerts, MailChimp, Flipgrid, kizoa, LICEcap, Typeform, Hemingway App, citavi, Cite This For Me, GoodReader, Microsoft Teams, Google Keep, IFTTT und Bullet Journal.
580 2 - PublicationA Multi-Layer and Multi-Tenant Cloud Assurance Evaluation Methodology(2015)
;Hudic, A.; ;Loruenser, T. ;Krotsiani, M. ;Spanoudakis, G. ;Mauthe, A.Weippl, E.Data with high security requirements is being processed and stored with increasing frequency in the Cloud. To guarantee that the data is being dealt in a secure manner we investigate the applicability of Assurance methodologies. In a typical Cloud environment the setup of multiple layers and different stakeholders determines security properties of individual components that are used to compose Cloud applications. We present a methodology adapted from Common Criteria for aggregating information reflecting the security properties of individual constituent components of Cloud applications. This aggregated information is used to categorise overall application security in terms of Assurance Levels and to provide a continuous assurance level evaluation. It gives the service owner an overview of the security of his service, without requiring detailed manual analyses of log files.153 3Scopus© Citations 8 - PublicationA Self-Organising Approach for Smart Meter Communication Systems(2014)
; ;Skopik, F. ;Hutchison, D.Bleier, T.147 2Scopus© Citations 1 - PublicationApplication Level Energy and Performance Measurements in a Wireless LAN(2011)
; ;Bhatti, S. N.Yu, Y.We present an experimental evaluation of energy usage and performance in a wireless LAN cell based on a test bed using the 5 GHz ISM band for 802.11a and 802.11n. We have taken an application-level approach, by varying the packet size and transmission rate at the protocol level and evaluating energy usage across a range of application transmission rates using both large and small packet sizes. We have observed that both the application's transmission rate and the packet size have an impact on energy efficiency for transmission in our test bed. We also included in our experiments evaluation of the energy efficiency of emulations of YouTube and Skype flows, and a comparison with Ethernet transmissions.141 1Scopus© Citations 24 - PublicationAre South African grape growers aware of their climatic comparative advantages for growing certain grape varieties? A hedonic approach applying machine learningWe 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.
567 878 - PublicationAusbildung im Spannungsfeld zwischen Bibliothekswesen und Wissensmanagement(Österreichisches OnlineInformationstreffen und österreichischer Dokumentartag, 2016-09-29)
; 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.285 571 - PublicationAutonomic Management of Client Concurrency in a Distributed Storage Service(2011)
; ;Kirby, G. N. C.Dearle, A.142 1 - PublicationCategorization of Standards, Guidelines and Tools for Secure System Design for Critical Infrastructure IT in the Cloud(2015)
;Paudel, S.; ;Wagner, C. ;Hudic, A.Ng, Wee-KongWith the increasing popularity of cloud computing, security in cloud-based applications is gaining awareness and is regarded as one of the most crucial factors for the long term success of such applications. Despite all benefits of cloud computing, its fate lies in its success in gaining trust from its users achieved by ensuring cloud services being built in a safe and secure manner. This work evaluates existing security standards and tools for creating Critical Infrastructure (CI) services in cloud environments -- often implemented as cyber physical systems (CPS). We also identify security issues from a literature review and from a show case analysis. Furthermore, we analyse and evaluate how mitigation options for identified open security issues for CI in the cloud point to individual aspects of standards and guidelines to support the creation of secure CPS/CI in the cloud. Additionally, we presented the results in a multidimensional taxonomy based on the mapping of the issues and the standards and tools. We show which areas require the attention as they are currently not covered completely by existing standards, guidelines and tools.138 1Scopus© Citations 2 - PublicationCollaborative Content Management in E-learning(Association for the Advancement of Computing in Education (AACE), Waynesville, NC, 2008-07-04)
; Recently, many new technologies have been developed in content management, e.g., collaborative content management, user generated content, Web 2.0 approaches. Many of these technologies can be used effectively for educational purposes. Since the development in the field of content management is very dynamic it also affects E-learning systems. This paper aims at identifying trends in collaborative content management that can be applied in E-learning scenarios. Additionally, it points out whether underlying technologies of these trends have already been integrated in learning management systems, learning content management systems and conventional web content management systems.126 1 - PublicationConnected cars — Threats, vulnerabilities and their impact(IEEE, 2018-05)
; ; ;Schmittner, Christoph; ; Delsing, JerkerThe growing demand for interoperability between system components within a connected car has led to new security challenges in automotive development. The existing components, based on established technology, are often being combined to form such a connected car. For such established technologies, individual, often sector specific threat and vulnerability catalogs exist. The aim of this paper is to identify blocks of established technologies in a connected car and to consolidate the corresponding threat and vulnerability catalogs relevant for the individual constituent components. These findings are used to estimate the impact on specific system components and subsystems to identify the most crucial components and threats.212 1Scopus© Citations 15 - PublicationDo corporately organized wine producers cope better with unfavorable weather conditions than private wine estates? Hedonic pricing models for South African winesIn our research we want to estimate the effect of changing weather conditions on south African wine prices for both, small wine estates and corporately organized producers and to compare these results. We assume that the latter cope better with unfavourable weather conditions than private wine estates, whereas beneficial weather will be favourable for both of them. We focus on the South African domestic wine market, as prices on export markets are additionally influenced by other factors, such as marketing strategies, certifications, mark ups of wholesalers or retailers etc.
429 723 - PublicationE-Collaboration Systems: How Collaborative They Really Are(COLLA 2011 – The First International Conference on Advanced Collaborative Networks, Systems and Applications, 2011-06-24)
; Electronic Collaboration Systems support employees in communication, coordination and collaboration tasks to work together to a common purpose to achieve business benefit. However, the marketplace of E Collaboration systems is multifaceted and is made up of various types of systems with differing emphasis. E Collaboration systems may be well suited for communication tasks or coordination tasks (e.g., collaboration systems with focus on project management), but lack support of collaborative tasks – and vice versa. To identify the extent of the support of “real” collaboration of E Collaboration systems, an analysis of collaboration features is applied to a number of E Collaboration systems. Although we focus entirely on collaboration features and present results on a number of E-Collaboration systems with above-average collaboration emphasis, significant differences in extent and quality of collaboration support can be detected.572 2610 - PublicationEnterprise 2.0 Adoption in SMEs: Application Areas, Motivation, Success Factors, and Barriers(KMIS 2012 – International Conference on Knowledge Management and Information Sharing, 2012-10-07)
; Social software platforms provide an efficient means to support team collaboration and knowledge management within the enterprise. Especially small or medium-sized enterprises (SMEs) may benefit from easy to use, light-weight enterprise 2.0 applications. A research approach is presented that is based on a cross-case analysis of case studies each of them representing an implementation of an emergent social platform within an organisation. The case studies are analysed by applying a structured approach to a qualitative content analysis. We determine which adoption strategies organisations use and identify applications areas and motivation factors of social software utilisation. Critical issues for the success of enterprise 2.0 initiatives like barriers and success factors are derived to provide organisations with deeper insight when starting their own enterprise 2.0 implementation.198 1532 - PublicationErfolgsfaktoren und Barrieren bei der Einführung von Social Media in KMUsIn diesem Beitrag werden mittels einer Cross-Case Analyse von sechs Fallstudien Einführungsstrategien, Motivationsfaktoren und kritische Erfolgsfaktoren für Social Media in KMUs analysiert. Hinsichtlich der Einführungsstrategien wird untersucht, ob ein top-down oder bottom-up Ansatz gewählt wurde und welche Begleitmaßnahmen eingesetzt wurden, um die Nutzung der Social Media Anwendung zu fördern. Um den detaillierten Vergleich gewährleisten zu können, wird eine standardisierte Struktur für die Fallstudien als Grundlage für eine systematische Analyse entwickelt.
288 1030 - PublicationGeneric Autonomic Management as a Service in a SOA-based Framework for Industry 4.0Cyber-physical production systems are engineered systems that are built from, and depend upon, the seamless integration of computational algorithms and physical components. In order to make these systems interoperable with each other for addressing Industry 4.0 applications a number of service-oriented architecture frameworks are developed. Such frameworks are composed by a number of services, which are inherently dynamic by nature and thus imply the need for self-adaptation. In this paper we propose generic autonomic management as a service and show how it can be integrated in the Arrowhead framework. We propose generic and reusable interfaces for each phase of the autonomic control loop in order to increase the usability of the service for other frameworks and application systems, while reducing the software engineering effort. To show the utility of our approach in the Arrowhead framework we use a climate control application as a representative example.
424 1Scopus© Citations 10 - PublicationIdentifying relationships between place and experience parameters and consumer evaluations in a wine tourism contextTourism experiences in viticultural areas tend to evoke strong positive and affective consumer reactions (Yuan et al., 2008). Ideally they lead to sentiments such as pleasure, satisfaction, nostalgia, or even emotional attachment (Gross & Brown, 2006; Hammitt, Backlund, & Bixler, 2006). Studies show that satisfaction is strongly related to attachment to a certain place (Williams & Huffman, 1986) and pleasure (Orth et al., 2011) and can lead to consumer loyalty (Dodd, 2000; Alexandris, Kouthouris & Meligdis, 2006) as well as greater spending (Moore & Graefe 1994; Dodd, 2000; Kyle, Absher & Graefe, 2003). In addition, research showed that visitors who are familiar with a region, i.e., they have visited the destination before, are more likely to develop strong attachment to that place over time (Williams, Patterson & Roggenbuck 1992). In order to analyse consumers and their wine-tourism related reactions of place and wine-tourism-experience evoked reactions and perceptions, the overarching research question of this study consequently is: Which relationships between place and experience parameters and consumer evaluations can be detected in a wine-tourism context?
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