Alpen-Adria-Universität Klagenfurt

About: Alpen-Adria-Universität Klagenfurt is a based out in . It is known for research contribution in the topics: Context (language use) & Computer science. The organization has 1481 authors who have published 4855 publications receiving 89655 citations.

Qualitative Content Analysis

Abstract: Der Beitrag beschreibt einen Ansatz systematischer, regelgeleiteter qualitativer Analyse von Text, der methodische Starken der quantitativen Inhaltsanalyse teilweise ubernimmt und zu einem qualitativ orientierten Instrumentarium ausweitet. Dazu werden historische Entwicklungslinien der Inhaltsanalyse aufgezeigt und die Grundlagen der Technik (Analyseeinheiten, Schrittmodelle, Arbeiten mit Kategoriensystemen, Gutekriterien) expliziert. Schlieslich werden an Techniken Qualitativer Inhaltsanalyse die induktive Kategorienentwicklung und die deduktive Kategorienanwendung naher dargestellt. Es wird gezeigt, wo Computerprogramme diese qualitativen Analyseschritte unterstutzen konnen, es werden Ansatzpunkte quantitativer Auswertungsschritte festgemacht und abschliesend die Moglichkeiten und Grenzen des Ansatzes diskutiert. URN: urn:nbn:de:0114-fqs0002204

Quantifying and mapping the human appropriation of net primary production in earth's terrestrial ecosystems

Abstract: Human appropriation of net primary production (HANPP), the aggregate impact of land use on biomass available each year in ecosystems, is a prominent measure of the human domination of the biosphere. We present a comprehensive assessment of global HANPP based on vegetation modeling, agricultural and forestry statistics, and geographical information systems data on land use, land cover, and soil degradation that localizes human impact on ecosystems. We found an aggregate global HANPP value of 15.6 Pg C/yr or 23.8% of potential net primary productivity, of which 53% was contributed by harvest, 40% by land-use-induced productivity changes, and 7% by human-induced fires. This is a remarkable impact on the biosphere caused by just one species. We present maps quantifying human-induced changes in trophic energy flows in ecosystems that illustrate spatial patterns in the human domination of ecosystems, thus emphasizing land use as a pervasive factor of global importance. Land use transforms earth's terrestrial surface, resulting in changes in biogeochemical cycles and in the ability of ecosystems to deliver services critical to human well being. The results suggest that large-scale schemes to substitute biomass for fossil fuels should be viewed cautiously because massive additional pressures on ecosystems might result from increased biomass harvest.

'Mode 3' and 'Quadruple Helix': toward a 21st century fractal innovation ecosystem

Abstract: 'Mode 3' allows and emphasises the co-existence and co-evolution of different knowledge and innovation paradigms: the competitiveness and superiority of a knowledge system is highly determined by its adaptive capacity to combine and integrate different knowledge and innovation modes via co-evolution, co-specialisation and co-opetition knowledge stock and flow dynamics. The 'Quadruple Helix' emphasises the importance of also integrating the perspective of the media-based and culture-based public. What results is an emerging fractal knowledge and innovation ecosystem, well-configured for the knowledge economy and society.

Recommender Systems: An Introduction

Abstract: In this age of information overload, people use a variety of strategies to make choices about what to buy, how to spend their leisure time, and even whom to date. Recommender systems automate some of these strategies with the goal of providing affordable, personal, and high-quality recommendations. This book offers an overview of approaches to developing state-of-the-art recommender systems. The authors present current algorithmic approaches for generating personalized buying proposals, such as collaborative and content-based filtering, as well as more interactive and knowledge-based approaches. They also discuss how to measure the effectiveness of recommender systems and illustrate the methods with practical case studies. The final chapters cover emerging topics such as recommender systems in the social web and consumer buying behavior theory. Suitable for computer science researchers and students interested in getting an overview of the field, this book will also be useful for professionals looking for the right technology to build real-world recommender systems.

Survey on Unmanned Aerial Vehicle Networks for Civil Applications: A Communications Viewpoint

Abstract: The days where swarms of unmanned aerial vehicles (UAVs) will occupy our skies are fast approaching due to the introduction of cost-efficient and reliable small aerial vehicles and the increasing demand for use of such vehicles in a plethora of civil applications. Governments and industry alike have been heavily investing in the development of UAVs. As such it is important to understand the characteristics of networks with UAVs to enable the incorporation of multiple, coordinated aerial vehicles into the air traffic in a reliable and safe manner. To this end, this survey reports the characteristics and requirements of UAV networks for envisioned civil applications over the period 2000–2015 from a communications and networking viewpoint. We survey and quantify quality-of-service requirements, network-relevant mission parameters, data requirements, and the minimum data to be transmitted over the network. Furthermore, we elaborate on general networking related requirements such as connectivity, adaptability, safety, privacy, security, and scalability. We also report experimental results from many projects and investigate the suitability of existing communication technologies for supporting reliable aerial networking.