Fachhochschule Kärnten
  • Spittal an der Drau, Austria
Recent publications
Service discovery combined with security usually plays a role in defining if an application shall be provided in EDGE/FOG or cloud. Most existing solutions focus on the ability of the infrastructure itself to distribute the clients, but it usually raises the question to identify a trustworthy server. We also want to explore the capabilities of mobile devices for service discovery, especially in terms of location awareness, which will aid us to identify the best suitable FOG/EDGE server. We shift the paradigm of searching an edge-instance to addressing an edge based on the location of the mobile device. To do so, we use DNS, and by using sub-domains, we address a location and an app and will use the identified instance for further user processing.
Optical networks offer a wide range of benefits to the telecommunication sector worldwide with their provision of higher bandwidth, which leads to faster data speed, longer transmission distance, and improved latency. Currently, the complexity associated with advancements in optical networks poses problems to network flexibility, reliability, and quality of service. Over the years, many reviews and proposals have been implemented by several literature studies to provide solutions for optical networks using software-defined networks and network service orchestrators. This study reviews the significant challenges in current optical network applications, the various solutions rendered by software-defined networks, and network service orchestration, impediments, and gaps in these software-defined networks. This study will go a step further to look into the various improvements and implementations of software-defined networks tailored to solve specific optical network problems. This study further proposes a flexible orchestration architecture for software-defined networks for solving flexibility and scalability problems in optical networks. This proposal uses an open network system (ONOS) SDN controller, leveraging on dockerisation and Kubernetes clusterisation and orchestration. This solution presents a more flexible, reliable, customable, and higher quality of service, which is an improvement upon current solutions in the literature.
We study the space of C1 isogeometric spline functions defined on trilinearly parameterized multi-patch volumes. Amongst others, we present a general framework for the design of the C1 isogeometric spline space and of an associated basis, which is based on the two-patch construction [7], and which works uniformly for any possible multi-patch configuration. The presented method is demonstrated in more detail on the basis of a particular subclass of trilinear multi-patch volumes, namely for the class of trilinearly parameterized multi-patch volumes with exactly one inner edge. For this specific subclass of trivariate multi-patch parameterizations, we further numerically compute the dimension of the resulting C1 isogeometric spline space and use the constructed C1 isogeometric basis functions to numerically explore the approximation properties of the C1 spline space by performing L2 approximation.
An important component of wildlife management and conservation is monitoring the health and population size of wildlife species. Monitoring the population size of an animal group can inform researchers of habitat use, potential changes in habitat and resulting behavioral adaptations, individual health, and the effectiveness of conservation efforts. Arboreal monkeys are difficult to monitor as their habitat is often poorly accessible and most monkey species have some degree of camouflage, making them hard to observe in and below the tree canopy. Surveys conducted using uninhabited aerial vehicles (UAVs) equipped with thermal infrared (TIR) cameras can help overcome these limitations by flying above the canopy and using the contrast between the warm body temperature of the monkeys and the cooler background vegetation, reducing issues with impassable terrain and animal camouflage. We evaluated the technical and procedural elements associated with conducting UAV-TIR surveys for arboreal and terrestrial macaque species. Primary imaging missions and analyses were conducted over a monkey park housing approximately 160 semi-free-ranging Japanese macaques (Macaca fuscata). We demonstrate Repeat Station Imaging (RSI) procedures using co-registered TIR image pairs facilitate the use of image differencing to detect targets that were moving during rapid sequence imaging passes. We also show that 3D point clouds may be generated from highly overlapping UAV-TIR image sets in a forested setting using structure from motion (SfM) image processing techniques. A point cloud showing area-wide elevation values was generated from TIR imagery, but it lacked sufficient point density to reliably determine the 3D locations of monkeys.
Der Darstellung der Praktiken des undoing deportation möchte ich theoretische Überlegungen im Feld von Nichtabschiebung voranstellen. Mein Ziel ist dabei, durch die Auseinandersetzung mit der Theorie zu einer Schärfung der Befunde zu gelangen: An welchen Stellen unterlaufen die empirischen Ergebnisse die Heuristiken oder stellen sie in Frage, wann eröffnen sie weitere Möglichkeiten und an welchen Stellen können theoretische Überlegungen ein vertieftes Verständnis der empirischen Befunde fördern? Gleichzeitig möchte ich durch die empirischen Ergebnisse zu einer Schärfung der theoretischen Perspektiven auf Nichtabschiebung beitragen. Dazu subsummiere ich Kämpfe gegen Abschiebungen unter dem Überbegriff Kämpfe der Migration.
Forschung zu Migration setzt in vielen Fällen eine Übermacht des Staates voraus: Staaten können neueste Überwachungstechnologien einsetzen, militarisieren die Grenze, intensivieren den Grenzschutz, können Abschiebungen unter dem Einsatz von Zwangsgewalt durchführen und immer restriktivere Gesetzgebungen im Bereich Migration erlassen. In dieser Arbeit wird demgegenüber mit einer etwas anderen Perspektive auf Staatlichkeit geblickt: Das folgende Kapitel unternimmt eine systematische Rekonstruktion und Analyse der bürokratischen Praktiken, die notwendig sind, um die Ausreisepflicht voranzutreiben. Ziel ist es, den Arbeitsprozess in seiner kontingenten Komplexität aufzufalten.
Wissensproduktion ist eine machtvolle Tätigkeit, und dies gilt insbesondere im Bereich der Migration. Wie und warum über ein Thema geforscht wird, hat zentralen Einfluss auf die Ergebnisse, wie Sandro Mezzadra in obigem Zitat darlegt. Daher sind methodologische Fragen essentiell: Sie gehen über technische Aspekte hinaus und gestalten den Blick auf die beforschten Phänomene maßgeblich.
Die Asyl- und Migrationspolitik in Österreich ist ein umkämpftes Feld, wie die obigen Zitate verdeutlichen. Dies trifft in besonderem Maße auf die Abschiebepolitik zu. Dieser Teilbereich erfuhr in Österreich seit dem Jahr 1999 vornehmlich durch die drei oben dargestellten öffentlichen Auseinandersetzungen mit der Frage, wer zur politischen Gemeinschaft gehört, eine massive Politisierung.
Bei der vorliegenden Arbeit handelt es sich um eine grenzregimeanalytisch informierte ethnomethodologische Forschungsarbeit. Sie untersucht die Frage, wie sich die Arbeit an der Ausreisepflicht gestaltet, indem sowohl die Durchsetzung von Abschiebungen als auch ihre Demontage, ihr doing bzw. undoing, analysiert worden sind. Während die ethnomethodologische Perspektive die Handlungsvollzüge der Teilnehmenden als zentral setzt, bettet die Grenzregimeanalyse das Handeln in politische Zusammenhänge ein, sodass die unterschiedlichen, ergebnisoffenen Rekonstruktionen der Praktiken machtkritisch eingeordnet werden können.
Bifurcation analysis is a very well established tool in chaos theory and non-linear dynamics. This paper revisits the practical application methods in two computer algebra tools, Matlab and Mathcad. After introducing into the topic and giving applications to those computer algebra tools, these implementations are investigated regarding their possible application above the core fields of chaos theory applications and the possibility to bridge hard and soft sciences with these computational mathematical tools, for striving complex dynamics across disciplinary borders as well as a transplanted or transferred tool use in soft science disciplines.
Die Konzeptentwicklung ist durch die Auswahl der Touchpoints und die Definition von Maßnahmen und Content gekennzeichnet. Bei der Auswahl der Kontaktpunkte ist es wichtig, dass Sie jene auswählen, die für Ihre Kunden oder potenziellen Kunden relevant erscheinen. Aus unternehmensinterner Sicht ist es aber auch von Bedeutung, dass Sie Touchpoints auswählen, die mit den vorhandenen Ressourcen gut bearbeitbar sind und sowohl mit der Unternehmensstruktur, als auch mit dem Unternehmensumfeld vereinbar sind.
Dieses Fallbeispiel beschäftigt sich mit der Sparte Backen, in der sich Personas und Customer Journeys im Laufe der Jahre stark verändert haben.
Dieses Kapitel zeigt auf, wie man Erfolg im digitalen Marketing in Kombination mit „klassischem Marketing“ permanent messbar machen kann, welche Kennzahlen am aussagekräftigsten sind und welche ganzheitlichen Ansätze zur Optimierung des Erfolgs es gibt.
Dieses Kapitel erläutert, wie Sie bei der Entwicklung von Buyer Personas vorgehen, wie Sie Customer Journeys analysieren und wie Sie Teilziele für jede Phase der Customer Journey definieren können, die Ihnen eine Beurteilung des Erfolgs Ihrer digitalen Kommunikationsmaßnahmen ermöglichen.
Die Digitalisierung bringt nahezu täglich neue Möglichkeiten und Tools, um mit Kunden in Kontakt zu treten. Für Marketingverantwortliche ist diese Entwicklung „Segen und Fluch“ zugleich. Mit der Digital Marketing Roadmap wird ein Konzept vorgestellt, wie Sie in drei Schritten das Marketing Ihres Unternehmens im digitalen Umfeld planen, umsetzen und messen.
Sustainability is not only a moral compass for organizations of all kinds and shapes; increasingly it can be identified as social representation influencing social practices and behavior. Conceptually inspired by the idea of preferences, conventions, and moral convictions influencing individual behavior and an innovative concept of moral harmonization strategies, this paper introduces a theoretical framework for the conceptualization of moralization effects in sustainability communication in general and food choices in particular. The framework is linked to empirical data from an exploratory qualitative pilot study, in which we conducted guideline-based interviews with 25 international students to gather information on individual perceptions of food choices and eating behaviors. Interview data were analyzed using inductive category formation to explore what role sustainability plays on an individual level in terms of coming in as a value or norm and how much sustainability as a normative principle influences individual decision-making processes and behavior. Based on the results of the pilot study, we hypothesize that food is less "morally overloaded" than expected and sustainability is not a moral imperative related to specific eating behavior. In line with previous findings, our results confirmed that food choices and changes in meat consumption involve a multi-faceted and complex decision-making process, which among others may be heavily influenced by inherent social norms within a person's social network, including family, friends as well as important other peers. Thus, with this preliminary study, we critically challenge existing literature on the influence of sustainability as moral imperative guiding and influencing individual behavior, at least in the domain of food and eating behavior. To elaborate on our proposed framework, additional empirical research is needed from a cultural, sustainability, language, and communication perspective.
Novel methods for species detection based on collection of environmental DNA (eDNA) are not only important in biodiversity assessment in a scientific context, but are also increasingly being applied in conservation practice. The eDNA-based biodiversity detection methods have significant potential for regular use in biodiversity status assessments and conservation actions in protected areas (PAs) and other effective area-based conservation measures (OECMs) worldwide. Species detection based on DNA from environmental samples, such as water, sediment, soil, air, or organic material, has a broad application scope with precise, comprehensive, and rapid species identification. Here, we provide an overview of the application range of eDNA-based methods for biodiversity monitoring in PAs, evaluate environmental assessments in which this technology has already been implemented for nature conservation, and examine the challenges that can hamper further application in real world practice. Based on the outcomes of two projects, practical experience, and current scientific literature focusing on their application, we conclude that eDNA-based species detection methods provide promising novel approaches that have strong potential as supplement methods, or in some cases even as substitutes for the conventional monitoring methods used for PAs. This advancement is expected to affect decision-making in biodiversity conservation efforts in PAs and OECMs.
Anthropogenic chemicals in freshwater environments contribute majorly to ecosystem degradation and biodiversity decline. In particular, anthropogenic organic micropollutants (AOM), a diverse group of compounds including pesticides, pharmaceuticals, and industrial chemicals, can significantly impact freshwater organisms. AOM were found to impact the genetic diversity of freshwater species, however, the degree to which AOM cause changes in population genetic structure and allelic richness of freshwater macroinvertebrates remains poorly understood. Here, the impact of AOM on the genetic diversity of the common amphipod Gammarus pulex (Linnaeus, 1758) (clade E) was investigated on a regional scale. The site‐specific AOM levels and their toxic potentials were determined in water and G. pulex tissue sample extracts for 34 sites along six rivers impacted by wastewater effluents and agricultural run‐off in central Germany. Population genetic parameters were determined for G. pulex from the sampling sites by genotyping 16 microsatellite loci. Genetic differentiation among G. pulex from the studied rivers was strongly associated with geographic distance between sites, but also with differences in site‐specific concentrations of AOM. Thus, genetic diversity parameters of G. pulex were found to be related to site‐specific AOM levels; allelic richness was significantly negatively correlated to levels of AOM in G. pulex tissue (p < 0.003) and was reduced by up to 22% at sites with increased levels of AOM. This was seen despite a positive relationship between allelic richness and the presence of waste‐water effluent. In addition, the inbreeding coefficient of G. pulex from sites with toxic AOM levels was up to 2.5 times higher than in G. pulex from more pristine sites. These results indicate that AOM levels commonly found in European rivers significantly contribute to changes in the genetic diversity of an ecologically relevant indicator species.
The drinking water scarcity is posing a threat to mankind, hence better water quality management methods are required. Magnetic water treatment, which has been reported to improve aesthetic water quality and reduce scaling problems, can be an important addition to the traditional disinfectant dependent treatment. Despite the extensive market application opportunities, the effect of magnetic fields on (microbial) drinking water communities and subsequently the biostability is still largely unexplored, although the first patent was registered already 1945. Here flow cytometry was applied to assess the effect of weak magnetic fields (≤10 G) with strong gradients (≈800 G/m) on drinking water microbial communities. Drinking water was collected from the tap and placed inside the magnetic field (treated) and 5 m away from the magnet to avoid any background interferences (control) using both a static set-up and a shaking set-up. Samples were collected during a seven-day period for flow cytometry examination. Additionally, the effects of magnetic fields on the growth of Pseudomonas aeruginosa in autoclaved tap water were examined. Based on the fluorescent intensity of the stained nucleic acid content, the microbial cells were grouped into low nucleic acid content (LNA) and high nucleic acid content (HNA). Our results show that the LNA was dominant under nutrient limited condition while the HNA dominates when nutrient is more available. Such behavior of LNA and HNA matches well with the long discussed r/K selection model where r-strategists adapted to eutrophic conditions and K-strategists adapted to oligotrophic conditions. The applied magnetic fields selectively promote the growth of LNA under nutrient rich environment, which indicates a beneficial effect on biostability enhancement. Inhibition on an HNA representative Pseudomonas aeruginosa has also been observed. Based on our laboratory observations, we conclude that magnetic field treatment can be a sustainable method for microbial community management with great potential.
Objective: The present study evaluated the effect of different rinsing postprocessing solutions on surface characteristics, flexural strength, and cytotoxicity of an additive manufactured polymer for orthodontic appliances. These solutions have been deemed an alternative to the standard isopropanol which is a flammable liquid, known to have toxic effects. Methods: Tested specimens were manufactured using direct light processing of an orthodontic appliance polymer (FREEPRINT® splint 2.0, Detax) and post-processed with different post-rinsing solutions, including isopropanol (IPA), ethanol (EtOH), EASY 3D Cleaner (EYC), Yellow Magic7 (YM7), and RESINAWAY (RAY), respectively. All groups were post-cured following the manufacturer's instructions. Surface topography and roughness (Ra and Rv) were evaluated. In addition, flexural strength was measured by a three-point bending test. An extract test was performed to evaluate cytotoxicity. The data were analyzed by the Kruskal-Wallis test with Dunn's multiple comparisons test (p < 0.05). Results: Various post-rinsing solutions did not significantly affect the roughness values (Ra and Rv). Specimens post-processed with EtOH (98.1 ± 12.4 MPa) and EYC (101.1 ± 6.3 MPa) exhibited significantly lower flexural strength compared to the groups of IPA (110.7 ± 5.3 MPa), RAY (112.1 ± 5.6 MPa) and YM7 (117.3 ± 5.9 MPa), respectively. Finally, there were no cytotoxic effects of parts cleaned with different post-rinsing solutions. Significance: Considering the use of 3D-printed orthodontic appliance materials, different rinsing postprocessing procedures did not affect surface characteristics. However, the flexural strength was significantly influenced, which could be attributed to the chemical ingredients of the post-rinsing solutions. Various post-rinsing treatments had no alternation concerning cytocompatibility.
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1,664 members
Anita Kloss-Brandstätter
  • Faculty of Engineering and IT
Pascal Nicolay
  • Faculty of Engineering and IT
Eva Mir
  • Faculty of Health Sciences and Social Work
Olivia Kada
  • Faculty of Health Sciences and Social Work
Information
Address
Villacher Straße 1, 9800, Spittal an der Drau, Austria
Head of institution
Prof. Dr. Dietmar Brodel
Website
https://www.fh-kaernten.at/
Phone
+43 (0)5 / 90500-0
Fax
+43 (0)5 / 90500-1110