@inproceedings{husinsky_matthias_virtual_2018, address = {Reutlingen}, title = {Virtual {Stage}: {Interactive} {Puppeteerting} in {Mixed} {Reality}.}, url = {https://anivae.fhstp.ac.at/program/}, booktitle = {{ANIVAE} - 1st {Workshop} on {Animation} in {Virtual} und {Augmented} {Environments}, {IEEE} {VR} 2018}, author = {{Husinsky, Matthias} and {Bruckner, Franziska}}, year = {2018}, keywords = {Forschungsgruppe Digital Technologies, Forschungsgruppe Media Creation, Immersive Media (AR, VR, 360°), Institut für Creative Media Technologies, Vortrag, Wiss. Beitrag, best, peer-reviewed, ⛔ No DOI found}, } @inproceedings{felberbauer_strategic_2018, title = {Strategic {Supply} {Chain} {Design} for an {Austrian} {Winter} {Road} {Service} {Provider}}, doi = {10/gnt2vj}, abstract = {Snowplow operations are critical for public safety and economic success in countries where difficult driving conditions occur in winter. Specifically, the salt supply ensuring good driving conditions is a crucial factor. In this paper, the strategic supply chain design of a winter service provider in Austria is investigated. Two research directions on the influence of bigger and fewer salt silos per depot and the logistic costs for a unique summer salt purchasing strategy are addressed applying two independent solution approaches. On the same data basis, a simulation model is developed and a mixed integer linear problem is applied to answer the respective research questions. The first study shows that the current depot availability is quite good but that bigger and fewer salt silos per depot could be a risk. Finally, the second study shows the logistic costs for the unique summer salt purchasing strategy and the optimal salt warehouse locations.}, booktitle = {2018 {Winter} {Simulation} {Conference} ({WSC})}, author = {Felberbauer, T. and Hübl, A. and Altendorfer, K. and Gattringer, J.}, year = {2018}, keywords = {Data models, FH SP Data Analytics \& Visual Computing, Forschungsgruppe Digital Technologies, Geographic information systems, Institut für Creative Media Technologies, Maintenance engineering, Planning, Roads, Supply chains, Vortrag, Wiss. Beitrag, best, peer-reviewed}, pages = {3120--3131}, } @article{felberbauer_stochastic_2018, title = {Stochastic project management: multiple projects with multi-skilled human resources}, issn = {1099-1425}, shorttitle = {Stochastic project management}, url = {https://doi.org/10.1007/s10951-018-0592-y}, doi = {10/gnt2vk}, abstract = {This paper presents two stochastic optimization approaches for simultaneous project scheduling and personnel planning, extending a deterministic model previously developed by Heimerl and Kolisch. For the problem of assigning work packages to multi-skilled human resources with heterogeneous skills, the uncertainty on work package processing times is addressed. In the case where the required capacity exceeds the available capacity of internal resources, external human resources are used. The objective is to minimize the expected external costs. The first solution approach is a “matheuristic” based on a decomposition of the problem into a project scheduling subproblem and a staffing subproblem. An iterated local search procedure determines the project schedules, while the staffing subproblem is solved by means of the Frank–Wolfe algorithm for convex optimization. The second solution approach is sample average approximation where, based on sampled scenarios, the deterministic equivalent problem is solved through mixed-integer programming. Experimental results for synthetically generated test instances inspired by a real-world situation are provided, and some managerial insights are derived.}, language = {en}, urldate = {2019-02-28}, journal = {Journal of Scheduling}, author = {Felberbauer, Thomas and Gutjahr, Walter J. and Doerner, Karl F.}, year = {2018}, keywords = {FH SP Data Analytics \& Visual Computing, Forschungsgruppe Digital Technologies, Heterogeneous skills, Institut für Creative Media Technologies, Iterated local search, Personnel planning, Project scheduling, Stochastic optimization, Wiss. Beitrag, best, peer-reviewed}, } @inproceedings{judmaier_probleme_2014, title = {Probleme mit {Tangible} {Interfaces} im {Ambient} {Assisted} {Living}}, url = {https://dl.gi.de/handle/20.500.12116/7592}, booktitle = {Proceedings of the {BGI} {Workshop} at {MuC} 2014}, author = {Judmaier, Peter and Rottermanner, Gernot and Sommer, Sabine and Schöffer, Lucas and Pflegerl, Johannes}, year = {2014}, note = {Projekt: BRELOMATE}, keywords = {Brelomate, Center for Digital Health Innovation, Creative Industries, Forschungsgruppe Digital Technologies, Forschungsgruppe Media Computing, HCI, Ilse Arlt Institut, Institut für Creative Media Technologies, peer-reviewed, ⛔ No DOI found}, } @inproceedings{kiselka_perception_2014, address = {Basel}, title = {Perception of muscular effort in multiple sclerosis during dynamic elbow extension muscle activity}, booktitle = {Congress {Program}}, publisher = {CongressMed}, author = {Kiselka, Anita and Retz, Irene and Greisenberger, Andrea and Heller, Mario}, year = {2014}, keywords = {Department Gesundheit und Soziales, Forschungsgruppe Digital Technologies, Institut für Gesundheitswissenschaften, Publikationstyp Präsentation, Publikationstyp Schriftpublikation, Publikationstyp Vortrag, SP IGW Clinical \& Healthcare Research, Studiengang Physiotherapie, best, peer-reviewed, ⛔ No DOI found}, } @article{luh_sequin_2018, title = {{SEQUIN}: a grammar inference framework for analyzing malicious system behavior}, url = {http://mc.fhstp.ac.at/sites/default/files/publications/Luh_2018_SEQUIN.pdf}, doi = {10/cwdf}, abstract = {Targeted attacks on IT systems are a rising threat to the confidentiality of sensitive data and the availability of critical systems. The emergence of Advanced Persistent Threats (APTs) made it paramount to fully understand the particulars of such attacks in order to improve or devise effective defense mechanisms. Grammar inference paired with visual analytics (VA) techniques offers a powerful foundation for the automated extraction of behavioral patterns from sequential event traces. To facilitate the interpretation and analysis of APTs, we present SEQUIN, a grammar inference system based on the Sequitur compression algorithm that constructs a context-free grammar (CFG) from string-based input data. In addition to recursive rule extraction, we expanded the procedure through automated assessment routines capable of dealing with multiple input sources and types. This automated assessment enables the accurate identification of interesting frequent or anomalous patterns in sequential corpora of arbitrary quantity and origin. On the formal side, we extended the CFG with attributes that help describe the extracted (malicious) actions. Discovery-focused pattern visualization of the output is provided by our dedicated KAMAS VA prototype.}, journal = {Journal of Computer Virology and Hacking Techniques}, author = {Luh, Robert and Schramm, Gregor and Wagner, Markus and Janicke, Helge and Schrittwieser, Sebastian}, year = {2018}, note = {Projekt: TARGET Projekt: KAVA-Time}, keywords = {FH SP Cyber Security, Forschungsgruppe Digital Technologies, Forschungsgruppe Media Computing, Forschungsgruppe Secure Societies, Institut für Creative Media Technologies, Institut für IT Sicherheitsforschung, Josef Ressel Zentrum TARGET, Visual analytics, Wiss. Beitrag, attribute grammar, best, best-lbwagner, best-rluh, knowledge generation, malware analysis, peer-reviewed, system behavior}, pages = {01 -- 21}, } @inproceedings{peirleitner_simulation_2016, title = {A {Simulation} {Approach} for {Multi}-stage {Supply} {Chain} {Optimization} to {Analyze} {Real} {World} {Transportation} {Effects}}, doi = {10/gh38b5}, booktitle = {Proceedings of the 2016 {Winter} {Simulation} {Conference}}, author = {Peirleitner, Andreas and Altendorfer, Klaus and Felberbauer, Thomas}, year = {2016}, keywords = {Forschungsgruppe Digital Technologies, Institut für Creative Media Technologies, Vortrag, peer-reviewed}, } @article{kiselka_perception_2013, title = {Perception of muscular effort in multiple sclerosis.}, volume = {32}, doi = {10/gh377b}, abstract = {BACKGROUND: Resistance exercise is effective in improving muscle strength and preventing muscle weakness in multiple sclerosis (MS) patients. Control of resistance training intensity based on perceived muscular effort is applicable to healthy individuals, yet there is no evidence of its utility for MS patients. OBJECTIVE: To compare perception of muscular effort in MS patients to healthy controls. METHODS: Based on their perception of muscular effort, twenty-five MS patients and twenty-eight controls adjusted static elbow extension tasks according to five levels on the OMNI-Resistance Exercise Scale. Elbow extension strength and muscle activity were measured via load cell dynamometer and surface electromyography (EMG) and related to each participant's maximal voluntary contraction (MVC) strength and muscle activity. Two-way analysis of variance was used to evaluate statistical significance. RESULTS: There were no statistically significant differences between MS patients and healthy controls, they produced similar relative torque values (F1 = 0.196; p {\textgreater} 0.05) and extensor muscle activities (F(2,617) = 1.556; p {\textgreater} 0.05) across all effort levels. CONCLUSION: No differences were found in the perception of muscular effort in MS patients and the age-matched control group. Future studies should explore, whether rating of perceived exertion is an effective instrument to control resistance training intensity in MS patients}, number = {2}, journal = {NeuroRehabilitation}, author = {Kiselka, Anita and Greisberger, Andrea and Heller, Mario}, year = {2013}, keywords = {Forschungsgruppe Digital Technologies, Institut für Gesundheitswissenschaften, Publikationstyp Schriftpublikation, SP IGW Clinical \& Healthcare Research, Studiengang Physiotherapie, best, best-lbheller, peer-reviewed}, pages = {415--423}, } @article{heller_perception_2016, title = {Perception of {Muscular} {Effort} {During} {Dynamic} {Elbow} {Extension} in {Multiple} {Sclerosis}}, volume = {97}, issn = {1532-821X}, doi = {10/f785d4}, abstract = {OBJECTIVE: To investigate the perception of muscular effort in individuals with multiple sclerosis (MS) and healthy controls during dynamic contractions. DESIGN: Case-control study. SETTING: MS day care center. PARTICIPANTS: Individuals with MS (n=28) and controls (n=28) (N=56). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Perceived muscular effort during dynamic elbow extensions was rated at 9 different weight intensities (10\%-90\% of 1-repetition maximum) in a single-blind, randomized order using the OMNI-Resistance Exercise Scale. Muscle activity of the triceps brachii muscle (lateral head) was measured via surface electromyography and normalized to maximal voluntary excitation. RESULTS: According to OMNI-level ratings, significant main effects were found for the diagnostic condition (F=27.33, P{\textless}.001, η(2)=.11), indicating 0.7 (95\% confidence interval [CI], 0.3-1.1) lower mean OMNI-level ratings for MS, and for the intensity level (F=46.81, P{\textless}.001, η(2)=.46), showing increased OMNI-level ratings for increased intensity levels for both groups. Furthermore, significant main effects were found for the diagnostic condition (F=16.52, P{\textless}.001, η(2)=.07), indicating 7.1\% (95\% CI, -8.6 to 22.8) higher maximal voluntary excitation values for MS, and for the intensity level (F=33.09, P{\textless}.001, η(2)=.36), showing higher relative muscle activities for increasing intensity levels in both groups. CONCLUSIONS: Similar to controls, individuals with MS were able to differentiate between different intensities of weight during dynamic elbow extensions when provided in a single-blind, randomized order. Therefore, perceived muscular effort might be considered to control resistance training intensities in individuals with MS. However, training intensity for individuals with MS should be chosen at approximately 1 OMNI level lower than recommended, at least for dynamic elbow extension exercises.}, language = {eng}, number = {2}, journal = {Archives of Physical Medicine and Rehabilitation}, author = {Heller, Mario and Retzl, Irene and Kiselka, Anita and Greisberger, Andrea}, month = feb, year = {2016}, pmid = {26525526}, keywords = {Center for Digital Health Innovation, Forschungsgruppe Digital Technologies, Studiengang Physiotherapie, best, best-lbheller}, pages = {252--258}, } @inproceedings{peirleitner_simulation_2017, title = {Simulation based manufacturing system improvement focusing on capacity and mrp decisions — {A} practical case from mechanical engineering}, doi = {10/ggp9sh}, abstract = {In this paper a practical case from an Austrian mechanical engineering company is presented. Simulation based manufacturing system improvement is applied to their component manufacturing plant. Based on the high number of items in the real case, a method for reduction of simulation model complexity applying item aggregation is developed in this paper. In the first improvement step, strategic capacity investment decisions are supported with the use of simulation. In the second step, a MRP planning parameter optimization is performed to improve service level and inventory. Additionally, the effect of capacity related decisions concerning setup time reduction and load-dependent outsourcing is evaluated. The results of this simulation study show that service level and inventory can be significantly improved by optimization of planning parameters and reduction of setup times. In addition, the study shows that load-dependent outsourcing is a viable alternative to capacity investment.}, booktitle = {2017 {Winter} {Simulation} {Conference} ({WSC})}, author = {Peirleitner, A. J. and Altendorfer, K. and Felberbauer, T.}, month = dec, year = {2017}, keywords = {Austrian mechanical engineering company, Data models, Department Medien und Digitale Technologien, Forschungsgruppe Digital Technologies, Institut für Creative Media Technologies, MRP, Manufacturing systems, Materials requirements planning, Optimization, Planning, Publikationstyp Schriftpublikation, Safety, best-lbfelberbauer, capacity planning, capacity planning (manufacturing), decision making, inventory, investment, manufacturing resources planning, mechanical engineering, optimisation, optimization, outsourcing, peer-reviewed, simulation based manufacturing system improvement, strategic capacity investment decisions}, pages = {3876--3887}, } @article{altendorfer_effects_2016, title = {Effects of forecast errors on optimal utilisation in aggregate production planning with stochastic customer demand}, volume = {54}, issn = {0020-7543}, url = {http://dx.doi.org/10.1080/00207543.2016.1162918}, doi = {10/gh372n}, abstract = {The hierarchical structure of production planning has the advantage of assigning different decision variables to their respective time horizons and therefore ensures their manageability. However, the restrictive structure of this top-down approach implying that upper level decisions are the constraints for lower level decisions also has its shortcomings. One problem that occurs is that deterministic mixed integer decision problems are often used for long-term planning, but the real production system faces a set of stochastic influences. Therefore, a planned utilisation factor has to be included into this deterministic aggregate planning problem. In practice, this decision is often based on past data and not consciously taken. In this paper, the effect of long-term forecast error on the optimal planned utilisation factor is evaluated for a production system facing stochastic demand and the benefit of exploiting this decision’s potential is discussed. Overall costs including capacity, backorder and inventory costs, are determined with simulation for different multi-stage and multi-item production system structures. The results show that the planned utilisation factor used in the aggregate planning problem has a high influence on optimal costs. Additionally, the negative effect of forecast errors is evaluated and discussed in detail for different production system environments.}, number = {12}, urldate = {2016-03-31}, journal = {International Journal of Production Research}, author = {Altendorfer, Klaus and Felberbauer, Thomas and Jodlbauer, Herbert}, year = {2016}, keywords = {Forschungsgruppe Digital Technologies, Institut für Creative Media Technologies, best, peer-reviewed}, pages = {3718--3735}, } @incollection{feichtinger_hybrid_2016, series = {Dynamic {Modelling} and {Econometrics} in {Economics} and {Finance}}, title = {Hybrid metaheuristics for project scheduling and staffing, considering project interruptions and labor contracts}, booktitle = {Dynamic {Perspectives} on {Managerial} {Decision} {Making} - {Essays} in {Honor} of {Richard} {Hartl}}, publisher = {Springer}, author = {Felberbauer, Thomas and Dörner, Karl Franz and Gutjahr, Walter Josef}, editor = {Feichtinger, Gustav and Dawid, Herbert and Dörner, Karl and Kort, Peter M. and Seidl, Andrea}, year = {2016}, keywords = {Forschungsgruppe Digital Technologies, Institut für Creative Media Technologies, best-lbfelberbauer, peer-reviewed}, } @inproceedings{miesenberger_brelomate_2016, address = {Cham}, title = {{BRELOMATE} - {A} {Distributed}, {Multi}-device {Platform} for {Online} {Information}, {Communication} and {Gaming} {Services} {Among} the {Elderly}}, volume = {9758}, isbn = {978-3-319-41263-4 978-3-319-41264-1}, url = {http://link.springer.com/10.1007/978-3-319-41264-1_37}, urldate = {2016-07-16}, booktitle = {Computers {Helping} {People} with {Special} {Needs} ({Part} 1)}, publisher = {Springer International Publishing}, author = {Doppler, Jakob and Sommer, Sabine and Gradl, Christian and Rottermanner, Gernot}, editor = {Miesenberger, Klaus and Bühler, Christian and Penaz, Petr}, year = {2016}, note = {Projekt: BRELOMATE II Projekt: UMBRELLO Projekt: BRELOMATE}, keywords = {Brelomate, Center for Digital Health Innovation, Center for Digital Health and Social Innovation, Forschungsgruppe Digital Technologies, Forschungsgruppe Media Computing, Ilse Arlt Institut, Institut für Creative Media Technologies, best-jdoppler, peer-reviewed}, pages = {277--280}, } @inproceedings{sommer_brelomate_2015, address = {Berlin}, title = {{BRELOMATE} - {Ein} {Second} {Screen} {Spiele}- und {Kommunikationsportal} für ältere {Menschen}}, isbn = {978-3-11-044390-5}, url = {https://dl.gi.de/handle/20.500.12116/8074}, urldate = {2015-10-14}, booktitle = {Mensch und {Computer} 2015 – {Workshopband}}, publisher = {De Gruyter Oldenbourg}, author = {Sommer, Sabine and Doppler, Jakob and Rottermanner, Gernot and Judmaier, Peter and Pflegerl, Johannes}, editor = {Weisbecker, A. and Schmidt, A.}, year = {2015}, note = {Projekt: BRELOMATE}, keywords = {Brelomate, Center for Digital Health Innovation, Forschungsgruppe Digital Technologies, Ilse Arlt Institut, Institut für Creative Media Technologies, best-ssommer, interdisziplinär, peer-reviewed}, pages = {605--609}, } @misc{vogt_wearable_2018, address = {Düsseldorf, Germany}, title = {Wearable {Theatre} – {Totaltheater}, virtueller {Raum} und die {Frage} nach {Akteur}*innen und {Räumen} eines {Theaters} and der {Schnittstelle} von {Live} {Erfahrung} und immersiver {VR} {Gestaltung}.}, copyright = {All rights reserved}, abstract = {Präsentation des Peek Projekts Wearable Theatre auf der Tagung der Gesellschaft für Theaterwissenschaft, Düsseldorf.}, author = {Vogt, Georg}, year = {2018}, keywords = {2018, Department Medien und Digitale Technologien, Forschungsgruppe Digital Technologies, Forschungsgruppe Media Creation, Institut für Creative Media Technologies, Publikationstyp Präsentation}, }