46 results on '"Gustavo Rovelo"'
Search Results
2. Snowflake: visualizing microbiome abundance tables as multivariate bipartite graphs
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Jannes Peeters, Daniël M. Bot, Gustavo Rovelo Ruiz, and Jan Aerts
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microbiome composition ,taxonomy ,metagenomics ,visualization method ,visualization application ,Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Current visualizations in microbiome research rely on aggregations in taxonomic classifications or do not show less abundant taxa. We introduce Snowflake: a new visualization method that creates a clear overview of the microbiome composition in collected samples without losing any information due to classification or neglecting less abundant reads. Snowflake displays every observed OTU/ASV in the microbiome abundance table and provides a solution to include the data’s hierarchical structure and additional information obtained from downstream analysis (e.g., alpha- and beta-diversity) and metadata. Based on the value-driven ICE-T evaluation methodology, Snowflake was positively received. Experts in microbiome research found the visualizations to be user-friendly and detailed and liked the possibility of including and relating additional information to the microbiome’s composition. Exploring the topological structure of the microbiome abundance table allows them to quickly identify which taxa are unique to specific samples and which are shared among multiple samples (i.e., separating sample-specific taxa from the core microbiome), and see the compositional differences between samples. An R package for constructing and visualizing Snowflake microbiome composition graphs is available at https://gitlab.com/vda-lab/snowflake. more...
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- 2024
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3. AI-Spectra: A Visual Dashboard for Model Multiplicity to Enhance Informed and Transparent Decision-Making
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Eerlings, Gilles, Vanbrabant, Sebe, Liesenborgs, Jori, Ruiz, Gustavo Rovelo, Vanacken, Davy, and Luyten, Kris
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Computer Science - Human-Computer Interaction ,Computer Science - Artificial Intelligence ,H.5.2 ,I.2.0 ,H.4.2 ,I.2.6 - Abstract
We present an approach, AI-Spectra, to leverage model multiplicity for interactive systems. Model multiplicity means using slightly different AI models yielding equally valid outcomes or predictions for the same task, thus relying on many simultaneous "expert advisors" that can have different opinions. Dealing with multiple AI models that generate potentially divergent results for the same task is challenging for users to deal with. It helps users understand and identify AI models are not always correct and might differ, but it can also result in an information overload when being confronted with multiple results instead of one. AI-Spectra leverages model multiplicity by using a visual dashboard designed for conveying what AI models generate which results while minimizing the cognitive effort to detect consensus among models and what type of models might have different opinions. We use a custom adaptation of Chernoff faces for AI-Spectra; Chernoff Bots. This visualization technique lets users quickly interpret complex, multivariate model configurations and compare predictions across multiple models. Our design is informed by building on established Human-AI Interaction guidelines and well know practices in information visualization. We validated our approach through a series of experiments training a wide variation of models with the MNIST dataset to perform number recognition. Our work contributes to the growing discourse on making AI systems more transparent, trustworthy, and effective through the strategic use of multiple models., Comment: Accepted for publication in an LNCS Volume "Engineering Interactive Computer Systems - EICS 2024 - International Workshops and Doctoral Consortium, Selected Papers" more...
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- 2024
4. Insecure Network, Unknown Connection: Understanding Wi-Fi Privacy Assumptions of Mobile Device Users
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Bram Bonné, Gustavo Rovelo, Peter Quax, and Wim Lamotte
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privacy ,security ,wireless networks ,usability ,802.11 ,user study ,security practices ,security awareness ,mobile ,Information technology ,T58.5-58.64 - Abstract
Smartphones and other mobile devices have proliferated in the past five years. The expectation of mobile device users to always be online has led to Wi-Fi networks being offered by a variety of providers. Using these networks introduces multiple security risks. In this work, we assess to what extent the privacy stance of mobile device users corresponds with their actual behavior by conducting a study with 108 participants. Our methodology consists of monitoring Wi-Fi networks that the participants’ devices connect to and the connections made by apps on these devices, for a period of 30 days. Afterwards, participants are surveyed about their awareness and privacy sensitiveness. We show that while a higher expertise in computer networks corresponds to more awareness about the connections made by apps, neither this expertise nor the actual privacy stance of the participant translates to better security habits. Moreover, participants in general were unaware about a significant part of connections made by apps on their devices, a matter that is worsened by the fact that one third of Wi-Fi networks that participants connect to do not have any security enabled. Based on our results, we provide recommendations to network providers, developers and users on how to improve Wi-Fi security for mobile devices. more...
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- 2017
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5. The Influence of Personality Traits and Game Design Elements on Player Enjoyment: An Empirical Study on GWAPs for Linguistics.
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Rosa Lilia Segundo Díaz, Gustavo Rovelo, Miriam Bouzouita, Véronique Hoste, and Karin Coninx
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- 2023
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6. The Influence of Personality Traits and Game Design Elements on Player Enjoyment: A Demo on GWAPs for Part-of-Speech Tagging.
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Rosa Lilia Segundo Díaz, Gustavo Rovelo, Miriam Bouzouita, Véronique Hoste, and Karin Coninx
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- 2023
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7. Theory-Informed Design Guidelines for Shared Decision Making Tools for Health Behaviour Change
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Bonneux, Cindel, Ruiz, Gustavo Rovelo, Dendale, Paul, Coninx, Karin, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Ali, Raian, editor, Lugrin, Birgit, editor, and Charles, Fred, editor more...
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- 2021
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8. A Comprehensive Approach to Decision Aids Supporting Shared Decision Making in Cardiac Rehabilitation.
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Cindel Bonneux, Gustavo Rovelo, Paul Dendale, and Karin Coninx
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- 2019
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9. Theory-Informed Design Guidelines for Shared Decision Making Tools for Health Behaviour Change
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Bonneux, Cindel, primary, Ruiz, Gustavo Rovelo, additional, Dendale, Paul, additional, and Coninx, Karin, additional
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- 2021
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10. Juegos con propósito para la anotación del Corpus Oral Sonoro del Español rural
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Díaz, Rosa Lilia Segundo, primary, Bonilla, Johnatan E., additional, Bouzouita, Miriam, additional, and Ruiz, Gustavo Rovelo, additional
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- 2023
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11. Task-oriented arm training for stroke patients based on remote handling technology concepts: A feasibility study
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Jule Elmanowski, Melanie Kleynen, Richard P.J. Geers, Gustavo Rovelo-Ruiz, Eva Geurts, Karin Coninx, Jeanine A. Verbunt, and Henk A.M. Seelen
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Biomaterials ,Biomedical Engineering ,Biophysics ,Health Informatics ,Bioengineering ,Information Systems - Abstract
BACKGROUND: Improving arm-hand skill performance is a major therapeutic target in stroke rehabilitation. Arm-hand rehabilitation may be enriched in content and variation by using technology-assisted training. Especially for people with a severely affected arm, technology-assisted training offers more challenging training possibilities. OBJECTIVE: The aim of this study was to explore the feasibility of ReHab-TOAT, a “Remote Handling Based Task-Oriented Arm Training” approach featuring enriched haptic feedback aimed at improving daily activities and participation. METHODS: Five subacute or chronic stroke patients suffering moderate to severe arm-hand impairments and five rehabilitation therapists participated. All participants received 2 ReHab-TOAT sessions. Outcome measure was a bespoke feasibility questionnaire on user experiences and satisfaction regarding ‘motivation’, ‘individualization of training’, ‘potential training effects’, and ‘implementation in rehabilitation’ of patients and therapists. RESULTS: Both patients and therapists experienced ReHab-TOAT as being feasible. They found ReHab-TOAT very motivating and challenging. All patients perceived an added value of ReHab-TOAT and would continue the training. Small improvements regarding exercise variability were suggested. CONCLUSION: ReHab-TOAT seems to be a feasible and very promising training approach for arm-hand rehabilitation of stroke patients with a moderately or severely affected arm. Further research is necessary to investigate potential training effects of ReHab-TOAT. more...
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- 2023
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12. Capturing Design Decision Rationale with Decision Cards.
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Marisela Gutierrez Lopez, Gustavo Rovelo, Mieke Haesen, Kris Luyten, and Karin Coninx
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- 2017
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13. Snowflake: visualizing microbiome abundance tables as multivariate bipartite graphs.
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Peeters, Jannes, Bot, Daniël M., Ruiz, Gustavo Rovelo, and Aerts, Jan
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- 2024
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14. A Pragmatically Designed Adaptive and Web-compliant Object-based Video Streaming Methodology: Implementation and Subjective Evaluation.
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Maarten Wijnants 0001, Gustavo Rovelo, Peter Quax, and Wim Lamotte
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- 2016
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15. WanderCouch - A Smart TV approach towards experiencing music festivals live from the living room.
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Maarten Wijnants 0001, Gustavo Rovelo, Peter Quax, and Wim Lamotte
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- 2017
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16. Studying the User Experience with a Multimodal Pedestrian Navigation Assistant.
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Gustavo Rovelo, Francisco Abad, M. Carmen Juan, and Emilio Camahort
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- 2015
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17. Gestu-Wan - An Intelligible Mid-Air Gesture Guidance System for Walk-up-and-Use Displays.
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Gustavo Rovelo, Donald Degraen, Davy Vanacken, Kris Luyten, and Karin Coninx
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- 2015
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18. A Survey on Development Tools for Mobile Augmented Reality.
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Gustavo Rovelo, Francisco Abad, and Emilio Camahort
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- 2012
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19. Assessing a multimodal user interface in a target acquisition task.
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Gustavo Rovelo, M. Carmen Juan, Francisco Abad, and Emilio Camahort
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- 2012
20. Stereoscopic Vision in Desktop Augmented Reality - User Performance in the Presence of Conflicting Depth Cues.
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Gustavo Rovelo, Francisco Abad, M. Carmen Juan, and Emilio Camahort
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- 2012
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21. An Inexpensive 3D Stereo Head-tracked Dual Viewing Single Display.
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Armando de la Re, Eduardo Martorell, Gustavo Rovelo, Emilio Camahort, and Francisco Abad
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- 2012
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22. Sistema de Realidad Aumentada para enseñanza de Geometría.
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Gustavo Rovelo, Francisco Abad, M. Carmen Juan, and Emilio Camahort
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- 2009
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23. HCI and worker well-being in manufacturing industry
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Eva Geurts, Gustavo Rovelo Ruiz, Kris Luyten, Steven Houben, Benjamin Weyers, An Jacobs, and Philippe Palanque
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- 2022
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24. Editorial: HCI and worker well-being.
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Geurts, Eva, Ruiz, Gustavo Rovelo, Luyten, Kris, and Palanque, Philippe
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- 2024
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25. Computerized decision support for exercise prescription in cardiovascular rehabilitation: high hopes…but still a long way to go
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Gustavo Rovelo Ruiz, Karin Coninx, and Dominique Hansen
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Decision support system ,medicine.medical_specialty ,Cardiac Rehabilitation ,Epidemiology ,business.industry ,MEDLINE ,Exercise therapy ,Exercise Therapy ,Prescriptions ,Physical therapy ,Medicine ,Humans ,Medical prescription ,Cardiology and Cardiovascular Medicine ,business ,Exercise prescription ,Cardiovascular rehabilitation - Published
- 2021
26. Do clinicians prescribe exercise similarly in patients with different cardiovascular diseases? Findings from the EAPC EXPERT working group survey
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Ines Frederix, Jean-Paul Schmid, Marie-Christine Iliou, Patrick Doherty, Dominique Hansen, Sally Hinton, Paul Dendale, Gustavo Rovelo Ruiz, Marco Ambrosetti, Karin Coninx, Esteban Garcia-Porrero, Matthias Wilhelm, Tom Vromen, Ana Abreu, HANSEN, Dominique, ROVELO RUIZ, Gustavo, Doherty, Patrick, Iliou, Marie-Christine, Vromen, Tom, Hinton, Sally, FREDERIX, Ines, Wilhelm, Matthias, Schmid, Jean-Paul, Abreu, Ana, Ambrosetti, Marco, Garcia-Porrero, Esteban, CONINX, Karin, DENDALE, Paul, APH - Methodology, APH - Aging & Later Life, Graduate School, and EAPC EXPERT Working Grp more...
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Male ,medicine.medical_specialty ,Epidemiology ,Health Status ,Clinical Decision-Making ,cardiovascular disease ,exercise prescription ,EXPERT tool ,Disease ,030204 cardiovascular system & hematology ,Decision Support Techniques ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,In patient ,Prospective Studies ,030212 general & internal medicine ,Healthcare Disparities ,Practice Patterns, Physicians' ,Aged ,Cardiac Rehabilitation ,Exercise Tolerance ,business.industry ,Middle Aged ,Exercise Therapy ,Europe ,Treatment Outcome ,Cardiovascular Diseases ,Health Care Surveys ,Practice Guidelines as Topic ,Physical therapy ,Female ,Human medicine ,Guideline Adherence ,Cardiology and Cardiovascular Medicine ,Exercise prescription ,business ,Cardiovascular rehabilitation - Abstract
Background Although disease-specific exercise guidelines for cardiovascular disease (CVD) are widely available, it remains uncertain whether these different exercise guidelines are integrated properly for patients with different CVDs. The aim of this study was to assess the inter-clinician variance in exercise prescription for patients with various CVDs and to compare these prescriptions with recommendations from the EXercise Prescription in Everyday practice and Rehabilitative Training (EXPERT) tool, a digital decision support system for integrated state-of-the-art exercise prescription in CVD. Design The study was a prospective observational survey. Methods Fifty-three CV rehabilitation clinicians from nine European countries were asked to prescribe exercise intensity (based on percentage of peak heart rate (HRpeak)), frequency, session duration, programme duration and exercise type (endurance or strength training) for the same five patients. Exercise prescriptions were compared between clinicians, and relationships with clinician characteristics were studied. In addition, these exercise prescriptions were compared with recommendations from the EXPERT tool. Results A large inter-clinician variance was found for prescribed exercise intensity (median (interquartile range (IQR)): 83 (13) % of HRpeak), frequency (median (IQR): 4 (2) days/week), session duration (median (IQR): 45 (18) min/session), programme duration (median (IQR): 12 (18) weeks), total exercise volume (median (IQR): 1215 (1961) peak-effort training hours) and prescription of strength training exercises (prescribed in 78% of all cases). Moreover, clinicians’ exercise prescriptions were significantly different from those of the EXPERT tool ( p Conclusions This study reveals significant inter-clinician variance in exercise prescription for patients with different CVDs and disagreement with an integrated state-of-the-art system for exercise prescription, justifying the need for standardization efforts regarding integrated exercise prescription in CV rehabilitation. more...
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- 2018
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27. How do General Practitioners assess physical activity and prescribe exercise in patients with different cardiovascular diseases? An Italian pilot study
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Foccardi, Giulia, primary, Hansen, Dominique, additional, Quinto, Giulia, additional, Favero, Claudia, additional, Coninx, Karin, additional, Ruiz, Gustavo Rovelo, additional, Dendale, Paul, additional, Niebauer, Josef, additional, Ermolao, Andrea, additional, and Neunhaeuserer, Daniel, additional more...
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- 2020
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28. Split & Dual Screen Comparison of Classic vs Object-based Video
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Peter Quax, Maarten Wijnants, Wim Lamotte, Sven Coppers, and Gustavo Rovelo Ruiz
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Computer science ,business.industry ,media_common.quotation_subject ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Object based ,DUAL (cognitive architecture) ,Object (computer science) ,Visual attention ,Quality (business) ,Computer vision ,Artificial intelligence ,business ,Subjective video quality ,media_common - Abstract
Over-the-top (OTT) streaming services like YouTube and Netflix induce massive amounts of video data, hereby putting substantial pressure on network infrastructure. This paper describes a demonstration of the object-based video (OBV) methodology that allows for the quality-variant MPEG-DASH streaming of respectively the background and foreground object(s) of a video scene. The OBV methodology is inspired by research into human visual attention and foveated compression, in that it allows to adaptively and dynamically assign bitrate to those portions of the visual scene that have the highest utility in terms of perceptual quality. Using a content corpus of interview-like video footage, the described demonstration proves the OBV methodology's potential to downsize video bitrate requirements while incurring at most marginal perceptual impact (i.e., in terms of subjective video quality). Thanks to its standards-compliant Web implementation, the OBV methodology is directly and broadly deployable without requiring capital expenditure. more...
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- 2019
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29. Talking Video Heads
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Gustavo Rovelo Ruiz, Sven Coppers, Maarten Wijnants, Wim Lamotte, and Peter Quax
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Average bitrate ,Multimedia ,Computer science ,Frame (networking) ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,020207 software engineering ,Context (language use) ,02 engineering and technology ,computer.software_genre ,Object (computer science) ,Minimum bounding box ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,computer ,Data compression - Abstract
Over-the-top (OTT) streaming services like YouTube and Netflix induce massive amounts of video traffic. To combat the resulting network load, this article empirically explores the use of the object-based video (OBV) methodology that allows for the quality-variant HTTP Adaptive Streaming of respectively the background and foreground object(s) of a video scene. In particular, we study two alternative video object representation methods where the first meticulously follows the object contour, while the second uses axis-aligned bounding box enclosures. We subjectively compare both techniques to traditional, frame-based video compression in the context of live action content featuring talking persons. The resulting mixed methods data shows that (i) OBV-informed users tolerate substantial background quality degradations, and (ii) at an average bitrate reduction of 14 percent, perceptual differences between respectively contour-based OBV and traditional encoding are small or even non-existing for the non-movie content in our corpus. Although our evaluation focuses on interview-like footage, our qualitative data hints that the presented results might be extrapolatable to other video genres. As such, our findings inform content owners and network operators about video bitrate saving opportunities with marginal perceptual impact. more...
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- 2019
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30. Exercise prescription in patients with different combinations of cardiovascular disease risk factors
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Hansen, Dominique, Niebauer, Josef, Cornelissen, Veronique, Barna, Olga, Neunhaeuserer, Daniel, Stettler, Christoph, Tonoli, Cajsa, Greco, Eugenio, Fagard, Robert, Coninx, Karin, Vanhees, Luc, Piepoli, Massimo F., Pedretti, Roberto, Ruiz, Gustavo Rovelo, Corra, Ugo, Schmid, Jean-Paul, Davos, Constantinos H., Edelmann, Frank, Abreu, Ana, Rauch, Bernhard, Ambrosetti, Marco, Braga, Simona Sarzi, Beckers, Paul, Bussotti, Maurizio, Faggiano, Pompilio, Garcia-Porrero, Esteban, Kouidi, Evangelia, Lamotte, Michel, Reibis, Rona Katharina, Spruit, Martijn A., Takken, Tim, Vigorito, Carlo, Völler, Heinz (Prof. Dr.), Doherty, Patrick, and Dendale, Paul more...
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Department Sport- und Gesundheitswissenschaften ,ddc:610 - Abstract
Whereas exercise training is key in the management of patients with cardiovascular disease (CVD) risk (obesity, diabetes, dyslipidaemia, hypertension), clinicians experience difficulties in how to optimally prescribe exercise in patients with different CVD risk factors. Therefore, a consensus statement for state-of-the-art exercise prescription in patients with combinations of CVD risk factors as integrated into a digital training and decision support system (the EXercise Prescription in Everyday practice & Rehabilitative Training (EXPERT) tool) needed to be established. EXPERT working group members systematically reviewed the literature for meta-analyses, systematic reviews and/or clinical studies addressing exercise prescriptions in specific CVD risk factors and formulated exercise recommendations (exercise training intensity, frequency, volume and type, session and programme duration) and exercise safety precautions, for obesity, arterial hypertension, type 1 and 2 diabetes, and dyslipidaemia. The impact of physical fitness, CVD risk altering medications and adverse events during exercise testing was further taken into account to fine-tune this exercise prescription. An algorithm, supported by the interactive EXPERT tool, was developed by Hasselt University based on these data. Specific exercise recommendations were formulated with the aim to decrease adipose tissue mass, improve glycaemic control and blood lipid profile, and lower blood pressure. The impact of medications to improve CVD risk, adverse events during exercise testing and physical fitness was also taken into account. Simulations were made of how the EXPERT tool provides exercise prescriptions according to the variables provided. In this paper, state-of-the-art exercise prescription to patients with combinations of CVD risk factors is formulated, and it is shown how the EXPERT tool may assist clinicians. This contributes to an appropriately tailored exercise regimen for every CVD risk patient. more...
- Published
- 2018
31. How do General Practitioners assess physical activity and prescribe exercise in patients with different cardiovascular diseases? An Italian pilot study.
- Author
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Foccardi, Giulia, Hansen, Dominique, Quinto, Giulia, Favero, Claudia, Coninx, Karin, Ruiz, Gustavo Rovelo, Dendale, Paul, Niebauer, Josef, Ermolao, Andrea, and Neunhaeuserer, Daniel
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- 2021
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32. Re-thinking Traceability
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Marisela Gutierrez Lopez, Karin Coninx, Mieke Haesen, Gustavo Rovelo Ruiz, and Kris Luyten
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Traceability ,Process (engineering) ,Computer science ,business.industry ,05 social sciences ,020207 software engineering ,02 engineering and technology ,Workspace ,Task (project management) ,Creative work ,Consistency (database systems) ,Design rationale ,0202 electrical engineering, electronic engineering, information engineering ,0501 psychology and cognitive sciences ,Software engineering ,business ,050107 human factors ,User-centered design - Abstract
Keeping track of design processes is a cumbersome task due to the apparently unconstrained and unstructured nature of creative work. Traceability is fundamental to revisit and reflect on the design narratives that describe artefact evolution. In this paper, we aim to identify what characteristics are necessary to facilitate traceability of creative design processes. For this end, we use a functional prototype to connect artefacts, design rationale, and decisions in a shared workspace. We evaluated this prototype for 15 weeks with six pairs of students engaged in a user-centered design project. Our findings show that having a lean repository of artefacts annotated with design rationale can facilitate tracking progress in different phases of the process. We found that creating a record of the participants' design work is useful to reflect on and for team agreement, ensure consistency of evolving artefacts, and help in planning future steps in the design project. more...
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- 2018
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33. Exercise prescription in patients with different combinations of cardiovascular disease risk factors : a consensus statement from the EXPERT working group
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Paul Dendale, Simona Sarzi Braga, Robert Fagard, Carlo Vigorito, Paul Beckers, Véronique Cornelissen, Patrick Doherty, Christoph Stettler, Tim Takken, Roberto F E Pedretti, Dominique Hansen, Marco Ambrosetti, Bernhard H. Rauch, Luc Vanhees, Ugo Corrà, Jean-Paul Schmid, Massimo F Piepoli, Olga Barna, Ana Abreu, Esteban Garcia-Porrero, Michel Lamotte, Maurizio Bussotti, Heinz Völler, Martijn A. Spruit, Josef Niebauer, Karin Coninx, Daniel Neunhäuserer, Constantinos H. Davos, Frank T. Edelmann, Evangelia Kouidi, Eugenio Greco, Rona Reibis, Gustavo Rovelo Ruiz, Cajsa Tonoli, and Pompilio Faggiano more...
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Male ,Sports medicine ,Statement (logic) ,Physical Therapy ,Economics ,Physical fitness ,RESTING BLOOD-PRESSURE ,030204 cardiovascular system & hematology ,0302 clinical medicine ,Sociology ,Risk Factors ,GLYCEMIC CONTROL ,Preventive Health Services ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,610 Medicine & health ,RESISTANCE EXERCISE ,Cardiac Rehabilitation ,Hand Strength ,Physical Therapy, Sports Therapy and Rehabilitation ,INTENSITY EXERCISE ,Exercise Therapy ,Treatment Outcome ,Systematic review ,Cardiovascular Diseases ,Female ,AEROBIC EXERCISE ,Exercise prescription ,medicine.medical_specialty ,Consensus ,ENDOTHELIAL FUNCTION ,MEDLINE ,TYPE-2 DIABETES-MELLITUS ,Sports Therapy and Rehabilitation ,03 medical and health sciences ,medicine ,Humans ,Aerobic exercise ,In patient ,Exercise physiology ,Medical prescription ,Exercise ,business.industry ,Exercise therapy ,OUTPATIENT CARDIAC REHABILITATION ,Regimen ,PHYSICAL-ACTIVITY ,Diabetes Mellitus, Type 1 ,Diabetes Mellitus, Type 2 ,Disease risk ,Physical therapy ,business ,CONTINUOUS MODERATE EXERCISE - Abstract
Whereas exercise training is key in the management of patients with cardiovascular disease (CVD) risk (obesity, diabetes, dyslipidaemia, hypertension), clinicians experience difficulties in how to optimally prescribe exercise in patients with different CVD risk factors. Therefore, a consensus statement for state-of-the-art exercise prescription in patients with combinations of CVD risk factors as integrated into a digital training and decision support system (the EXercise Prescription in Everyday practice & Rehabilitative Training (EXPERT) tool) needed to be established. EXPERT working group members systematically reviewed the literature for meta-analyses, systematic reviews and/or clinical studies addressing exercise prescriptions in specific CVD risk factors and formulated exercise recommendations (exercise training intensity, frequency, volume and type, session and programme duration) and exercise safety precautions, for obesity, arterial hypertension, type 1 and 2 diabetes, and dyslipidaemia. The impact of physical fitness, CVD risk altering medications and adverse events during exercise testing was further taken into account to fine-tune this exercise prescription. An algorithm, supported by the interactive EXPERT tool, was developed by Hasselt University based on these data. Specific exercise recommendations were formulated with the aim to decrease adipose tissue mass, improve glycaemic control and blood lipid profile, and lower blood pressure. The impact of medications to improve CVD risk, adverse events during exercise testing and physical fitness was also taken into account. Simulations were made of how the EXPERT tool provides exercise prescriptions according to the variables provided. In this paper, state-of-the-art exercise prescription to patients with combinations of CVD risk factors is formulated, and it is shown how the EXPERT tool may assist clinicians. This contributes to an appropriately tailored exercise regimen for every CVD risk patient. ispartof: SPORTS MEDICINE vol:48 issue:8 pages:1781-1797 ispartof: location:New Zealand status: published more...
- Published
- 2018
34. Capturing Design Decision Rationale with Decision Cards
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Karin Coninx, Mieke Haesen, Gustavo Rovelo, Marisela Gutierrez Lopez, Kris Luyten, Hasselt University (UHasselt), Regina Bernhaupt, Girish Dalvi, Anirudha Joshi, Devanuj K. Balkrishan, Jacki O'Neill, Marco Winckler, and TC 13 more...
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Decision support system ,Traceability ,Decision engineering ,Management science ,business.industry ,Computer science ,05 social sciences ,0211 other engineering and technologies ,Design rationale documentation ,02 engineering and technology ,R-CAST ,Business decision mapping ,Design process ,0501 psychology and cognitive sciences ,[INFO]Computer Science [cs] ,Software engineering ,business ,Engineering design process ,050107 human factors ,021106 design practice & management ,Decision analysis ,Decision-making - Abstract
Part 7: Design Rationale and Camera-Control; International audience; In the design process, designers make a wide variety of decisions that are essential to transform a design from a conceptual idea into a concrete solution. Recording and tracking design decisions, a first step to capturing the rationale of the design process, are tasks that until now are considered as cumbersome and too constraining. We used a holistic approach to design, deploy, and verify decision cards; a low threshold tool to capture, externalize, and contextualize design decisions during early stages of the design process. We evaluated the usefulness and validity of decision cards with both novice and expert designers. Our exploration results in valuable insights into how such decision cards are used, into the type of information that practitioners document as design decisions, and highlight the properties that make a recorded decision useful for supporting awareness and traceability on the design process. more...
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- 2017
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35. Exercise Prescription in Patients with Different Combinations of Cardiovascular Disease Risk Factors: A Consensus Statement from the EXPERT Working Group
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Hansen, Dominique, primary, Niebauer, Josef, additional, Cornelissen, Veronique, additional, Barna, Olga, additional, Neunhäuserer, Daniel, additional, Stettler, Christoph, additional, Tonoli, Cajsa, additional, Greco, Eugenio, additional, Fagard, Robert, additional, Coninx, Karin, additional, Vanhees, Luc, additional, Piepoli, Massimo F., additional, Pedretti, Roberto, additional, Ruiz, Gustavo Rovelo, additional, Corrà, Ugo, additional, Schmid, Jean-Paul, additional, Davos, Constantinos H., additional, Edelmann, Frank, additional, Abreu, Ana, additional, Rauch, Bernhard, additional, Ambrosetti, Marco, additional, Braga, Simona Sarzi, additional, Beckers, Paul, additional, Bussotti, Maurizio, additional, Faggiano, Pompilio, additional, Garcia-Porrero, Esteban, additional, Kouidi, Evangelia, additional, Lamotte, Michel, additional, Reibis, Rona, additional, Spruit, Martijn A., additional, Takken, Tim, additional, Vigorito, Carlo, additional, Völler, Heinz, additional, Doherty, Patrick, additional, and Dendale, Paul, additional more...
- Published
- 2018
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36. Exercise Prescription in Patients with Different Combinations of Cardiovascular Disease Risk Factors: A Consensus Statement from the EXPERT Working Group
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Hansen, Dominique, Niebauer, Josef, Cornelissen, Veronique, Barna, Olga, Neunhäuserer, Daniel, Stettler, Christoph, Tonoli, Cajsa, Greco, Eugenio, Fagard, Robert, Coninx, Karin, Vanhees, Luc, Piepoli, Massimo, Pedretti, Roberto, Ruiz, Gustavo Rovelo, Corrà, Ugo, Schmid, Jean Paul, Davos, Constantinos C.H., Edelmann, Frank, Abreu, Ana, Rauch, Bernhard, Ambrosetti, Marco, Braga, Simona Sarzi, Beckers, Paul, Bussotti, Maurizio, Faggiano, Pompilio, Garcia-Porrero, Esteban, Kouidi, Evangelia, Lamotte, Michel, Reibis, Rona, Spruit, Martijn M.A., Takken, Tim, Vigorito, Carlo, Völler, Heinz, Doherty, Patrick, Dendale, Paul, Hansen, Dominique, Niebauer, Josef, Cornelissen, Veronique, Barna, Olga, Neunhäuserer, Daniel, Stettler, Christoph, Tonoli, Cajsa, Greco, Eugenio, Fagard, Robert, Coninx, Karin, Vanhees, Luc, Piepoli, Massimo, Pedretti, Roberto, Ruiz, Gustavo Rovelo, Corrà, Ugo, Schmid, Jean Paul, Davos, Constantinos C.H., Edelmann, Frank, Abreu, Ana, Rauch, Bernhard, Ambrosetti, Marco, Braga, Simona Sarzi, Beckers, Paul, Bussotti, Maurizio, Faggiano, Pompilio, Garcia-Porrero, Esteban, Kouidi, Evangelia, Lamotte, Michel, Reibis, Rona, Spruit, Martijn M.A., Takken, Tim, Vigorito, Carlo, Völler, Heinz, Doherty, Patrick, and Dendale, Paul more...
- Abstract
Whereas exercise training is key in the management of patients with cardiovascular disease (CVD) risk (obesity, diabetes, dyslipidaemia, hypertension), clinicians experience difficulties in how to optimally prescribe exercise in patients with different CVD risk factors. Therefore, a consensus statement for state-of-the-art exercise prescription in patients with combinations of CVD risk factors as integrated into a digital training and decision support system (the EXercise Prescription in Everyday practice & Rehabilitative Training (EXPERT) tool) needed to be established. EXPERT working group members systematically reviewed the literature for meta-analyses, systematic reviews and/or clinical studies addressing exercise prescriptions in specific CVD risk factors and formulated exercise recommendations (exercise training intensity, frequency, volume and type, session and programme duration) and exercise safety precautions, for obesity, arterial hypertension, type 1 and 2 diabetes, and dyslipidaemia. The impact of physical fitness, CVD risk altering medications and adverse events during exercise testing was further taken into account to fine-tune this exercise prescription. An algorithm, supported by the interactive EXPERT tool, was developed by Hasselt University based on these data. Specific exercise recommendations were formulated with the aim to decrease adipose tissue mass, improve glycaemic control and blood lipid profile, and lower blood pressure. The impact of medications to improve CVD risk, adverse events during exercise testing and physical fitness was also taken into account. Simulations were made of how the EXPERT tool provides exercise prescriptions according to the variables provided. In this paper, state-of-the-art exercise prescription to patients with combinations of CVD risk factors is formulated, and it is shown how the EXPERT tool may assist clinicians. This contributes to an appropriately tailored exercise regimen for every CVD risk patient., SCOPUS: re.j, info:eu-repo/semantics/published more...
- Published
- 2018
37. WanderCouch: A Smart TV Approach Towards Experiencing Music Festivals Live from the Living Room
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Gustavo Rovelo, Peter Quax, Wim Lamotte, and Maarten Wijnants
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Multimedia ,Computer Networks and Communications ,Computer science ,05 social sciences ,02 engineering and technology ,computer.software_genre ,Living room ,World Wide Web ,Hardware and Architecture ,020204 information systems ,0202 electrical engineering, electronic engineering, information engineering ,Media Technology ,immersive experience ,music festivals ,expectation solicitation ,Smart TV ,user-generated content ,360 degree video ,0501 psychology and cognitive sciences ,computer ,050107 human factors ,Software - Abstract
Attending music festivals is a popular pastime. However, there will unfortunately always be a share of fans who, for a wide variety of reasons, are unable to visit a festival of their choice in person. This article reports on the expectations users have about being able to immersively experience music festivals from the comfort of their living room. Out of these expectations, we distill an approach for remote festival engagement that is centered around the concept of blending respectively professional and user-generated content. We then crystallize our approach into a Smart TV application called WanderCouch and let prospective users evaluate it in a simulated live setting. The resulting findings suggest that the proposed solution, among other things, exhibits the potential to improve on the experience provided by traditional (TV) coverages of music festivals, to have a positive impact on both immersion and level of engagement with concerts, and to transfer a veracious impression of the festival's general theme and on-site atmosphere. The research leading to these results has received funding from the European Union's Seventh Framework Programme (FP7/2007-2013) under grant agreement nr 610370, ICoSOLE ("Immersive Coverage of Spatially Outspread Live Events", http://www.icosole.eu). The authors would like to thank their consortium partners VRT, BBC, Technicolor, Joanneum Research, bitmovin and TaW for their help gathering the Dranouter footage. We explicitly thank prof. Philippe Bekaert for his efforts in rendering out the professional Dranouter recordings. Finally, we express our sincere gratitude to the organizers of the Dranouter music festival, as well as to Triggerfinger, Intergalactic Lovers and Bart Peeters, the three bands that are featured in our prototype. more...
- Published
- 2017
38. The European Association of Preventive Cardiology Exercise Prescription in Everyday Practice and Rehabilitative Training (EXPERT) tool: A digital training and decision support system for optimized exercise prescription in cardiovascular disease. Concept, definitions and construction methodology
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Olga Barna, Bernhard H. Rauch, Frank T. Edelmann, Simona Sarzi Braga, Massimo F Piepoli, Roberto F E Pedretti, Maurizio Bussotti, Véronique Cornelissen, Rona Reibis, Paul Dendale, Gustavo Rovelo Ruiz, Daniel Neunhäuserer, Heinz Völler, Jean Paul Schmid, Ana Abreu, Marco Ambrosetti, Patrick Doherty, Evangelia Kouidi, Dominique Hansen, Esteban Garcia-Porrero, Josef Niebauer, Eugenio Greco, Robert Fagard, Christoph Stettler, Michel Lamotte, Constantinos H. Davos, Carlo Vigorito, Karin Coninx, Luc Vanhees, Martijn A. Spruit, Pompilio Faggiano, Eva Geurts, Cajsa Tonoli, Ugo Corrà, Paul Beckers, Tim Takken, RS: NUTRIM - R3 - Respiratory & Age-related Health, Pulmonologie, and RS: NUTRIM - R3 - Chronic inflammatory disease and wasting more...
- Subjects
Epidemiology ,medicine.medical_treatment ,Disease ,030204 cardiovascular system & hematology ,HSM CAR ,Health informatics ,0302 clinical medicine ,Risk Factors ,Telerehabilitation ,Preventive Health Services ,Medicine ,030212 general & internal medicine ,ESC GUIDELINES ,MODALITIES ,Cardiovascular Diseases / physiopathology ,Exercise Tolerance ,Rehabilitation ,cardiovascular disease ,rehabilitation ,exercise training ,training and decision support system ,Cardiovascular disease ,Exercise Therapy ,Preventive Health Services / standards ,3. Good health ,Cardiovascular Diseases / diagnosis ,Treatment Outcome ,Cardiovascular Diseases ,HEART-FAILURE ,JOINT TASK-FORCE ,Cardiology and Cardiovascular Medicine ,Exercise prescription ,Risk assessment ,medicine.medical_specialty ,SOCIETY ,Exercise Therapy / standards ,DIAGNOSIS ,Risk Assessment ,Decision Support Techniques ,03 medical and health sciences ,Predictive Value of Tests ,MANAGEMENT ,Department Sport- und Gesundheitswissenschaften ,Humans ,Cardiac Rehabilitation / adverse effects ,Medical prescription ,Cardiac Rehabilitation / standards ,CARDIAC REHABILITATION ,Cardiovascular Diseases / epidemiology ,Modalities ,business.industry ,Exercise Therapy / adverse effects ,NATIONAL-SURVEY ,PHYSICAL-ACTIVITY ,Physical therapy ,Human medicine ,business ,Cardiovascular Diseases / prevention & control - Abstract
Background Exercise rehabilitation is highly recommended by current guidelines on prevention of cardiovascular disease, but its implementation is still poor. Many clinicians experience difficulties in prescribing exercise in the presence of different concomitant cardiovascular diseases and risk factors within the same patient. It was aimed to develop a digital training and decision support system for exercise prescription in cardiovascular disease patients in clinical practice: the European Association of Preventive Cardiology Exercise Prescription in Everyday Practice and Rehabilitative Training (EXPERT) tool. Methods EXPERT working group members were requested to define (a) diagnostic criteria for specific cardiovascular diseases, cardiovascular disease risk factors, and other chronic non-cardiovascular conditions, (b) primary goals of exercise intervention, (c) disease-specific prescription of exercise training (intensity, frequency, volume, type, session and programme duration), and (d) exercise training safety advices. The impact of exercise tolerance, common cardiovascular medications and adverse events during exercise testing were further taken into account for optimized exercise prescription. Results Exercise training recommendations and safety advices were formulated for 10 cardiovascular diseases, five cardiovascular disease risk factors (type 1 and 2 diabetes, obesity, hypertension, hypercholesterolaemia), and three common chronic non-cardiovascular conditions (lung and renal failure and sarcopaenia), but also accounted for baseline exercise tolerance, common cardiovascular medications and occurrence of adverse events during exercise testing. An algorithm, supported by an interactive tool, was constructed based on these data. This training and decision support system automatically provides an exercise prescription according to the variables provided. Conclusion This digital training and decision support system may contribute in overcoming barriers in exercise implementation in common cardiovascular diseases. The author(s) disclosed receipt of the following financial support for the research, authorship and/or publication of this article: The realisation of the proof of concept of the EXPERT tool was supported by a UHasselt Industrial Research Fund (IOF) proof of concept (PoC) project. more...
- Published
- 2017
39. Hidden in Plain Sight
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Gustavo Rovelo Ruiz, Donald Degraen, Davy Vanacken, Kris Luyten, and Sven Coppers
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Focus (computing) ,Orientation (computer vision) ,Computer science ,business.industry ,media_common.quotation_subject ,05 social sciences ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,020207 software engineering ,Retinal ,02 engineering and technology ,Motion (physics) ,Sight ,Visual language ,chemistry.chemical_compound ,chemistry ,Perception ,0202 electrical engineering, electronic engineering, information engineering ,0501 psychology and cognitive sciences ,Computer vision ,Artificial intelligence ,Set (psychology) ,business ,050107 human factors ,media_common - Abstract
In this paper, we set out to find what encompasses an appropriate visual language for information presented on near-eye out-of-focus displays. These displays are positioned in a user's peripheral view, very near to the user's eyes, for example on the inside of the temples of a pair of glasses. We explored the usable display area, the role of spatial and retinal variables, and the influence of motion and interaction for such a language. Our findings show that a usable visual language can be accomplished by limiting the possible shapes and by making clever use of orientation and meaningful motion. We found that especially motion is very important to improve perception and comprehension of what is being displayed on near-eye out-of-focus displays, and that perception is further improved if direct interaction with the content is allowed. more...
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- 2016
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40. An optimized adaptive streaming framework for interactive immersive video experiences
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Peter Quax, Wim Lamotte, Gustavo Rovelo Ruiz, Johan Claes, Jean-François Macq, Maarten Wijnants, WIJNANTS, Maarten, QUAX, Peter, ROVELO RUIZ, Gustavo, LAMOTTE, Wim, CLAES, Johan, and Macq, Jean-Francois more...
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Multimedia ,Computer science ,Bandwidth (signal processing) ,immersion and experience ,immersion ,360 Video ,omnidirectional ,dynamic adaptive streaming over HTTP (DASH) ,Ranging ,Video processing ,Software architecture ,Omnidirectional antenna ,computer.software_genre ,computer ,Interactive storytelling ,Transform coding ,Visualization - Abstract
This paper describes how optimized streaming strategies, based on MPEG-DASH, can be employed to power a new generation of interactive applications based on immersive video. The latter encompasses ultra-high-resolution, omnidirectional and panoramic video. The goal is to deliver experiences that are made up of multiple videos of short duration, which can be joined at run-time in an order defined through user interactions. Applications of the technology are widespread, ranging from virtual walkthroughs to interactive storytelling, the former of which will be featured in detail. The main technological challenges tackled in this paper are to deliver these experiences in a seamless fashion, at the highest quality level allowed by network conditions and on a wide range of platforms, including the Web. Besides these, the paper focuses on the two-tier software architecture of the proposed framework, as well as a short evaluation to substantiate the validity of the proposed solutions. more...
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- 2015
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41. Computerized decision support for exercise prescription in cardiovascular rehabilitation: high hopes...but still a long way to go.
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Hansen, Dominique, Ruiz, Gustavo Rovelo, and Coninx, Karin
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- 2021
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42. Multi-viewer gesture-based interaction for omni-directional video
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Francisco Abad, Gustavo Rovelo Ruiz, Davy Vanacken, Emilio Camahort, and Kris Luyten
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Multimedia ,InformationSystems_INFORMATIONINTERFACESANDPRESENTATION(e.g.,HCI) ,Gesture recognition ,Computer science ,Omni directional ,Variation (game tree) ,computer.software_genre ,Set (psychology) ,Motion capture ,computer ,Gesture - Abstract
Omni-directional video (ODV) is a novel medium that offers viewers a 360o panoramic recording. This type of content will become more common within our living rooms in the near future, seeing that immersive displaying technologies such as 3D television are on the rise. However, little attention has been given to how to interact with ODV content. We present a gesture elicitation study in which we asked users to perform mid-air gestures that they consider to be appropriate for ODV interaction, both for individual as well as collocated settings. We are interested in the gesture variations and adaptations that come forth from individual and collocated usage. To this end, we gathered quantitative and qualitative data by means of observations, motion capture, questionnaires and interviews. This data resulted in a user-defined gesture set for ODV, alongside an in-depth analysis of the variation in gestures we observed during the study. more...
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- 2014
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43. Assessing a Multimodal User Interface in a Target Acquisition Task
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M. Carmen Juan, Francisco Abad, Emilio Camahort, and Gustavo Rovelo
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Modalities ,Modality (human–computer interaction) ,Open research ,Multimedia ,Computer science ,Human–computer interaction ,Sensory system ,User interface ,computer.software_genre ,computer ,Target acquisition ,Communication channel ,Task (project management) - Abstract
The goal of multimodal user interfaces is to assist users in completing tasks quicker or with fewer errors, by reducing their cognitive workload. Visual, auditory and tactile feedback modalities are commonly used as a means to provide users with information through different sensory channels. Understanding how visual, auditory and tactile feedback modalities complement each other is still an open research area for understanding how computers can help users to complete everyday tasks more efficiently. In this paper, we evaluate user performance on a target acquisition task that simulates a real life scenario: locating a book in a bookcase. We performed a comprehensive comparison among the seven possible combinations of three feedback channels (visual, auditory and tactile). Twenty-four volunteers participated in our experiment. Our results show that using the combination of the three feedback modalities improves user performance on this evidently visual task. However, using the visual modality alone does not increase user performance as much as the other feedback channels. By means of a post-experiment questionnaire, subjects reported that they perceived tactile modality as the most helpful feedback channel. more...
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- 2012
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44. How do General Practitioners assess physical activity and prescribe exercise in patients with different cardiovascular diseases? An Italian pilot study
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Foccardi, Giulia, Hansen, Dominique, Quinto, Giulia, Favero, Claudia, Coninx, Karin, Ruiz, Gustavo Rovelo, Dendale, Paul, Niebauer, Josef, Ermolao, Andrea, and Neunhaeuserer, Daniel
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- 2024
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45. An optimized adaptive streaming framework for interactive immersive video experiences
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Wijnants, Maarten, primary, Quax, Peter, additional, Ruiz, Gustavo Rovelo, additional, Lamotte, Wim, additional, Claes, Johan, additional, and Macq, Jean-Francois, additional
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- 2015
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46. Studying the user experience with a multimodal pedestrian navigation assistant
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Emilio Camahort, Gustavo Rovelo, Francisco Abad, and M. C. Juan
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Auditory feedback ,Modalities ,Multimedia ,business.industry ,Computer science ,computer.software_genre ,Domain (software engineering) ,Smartwatch ,User experience design ,Human–computer interaction ,Turn-by-turn navigation ,multimodal interface ,user evaluation ,mobile augmented reality ,business ,computer ,Mobile device ,Communication channel - Abstract
The widespread usage of mobile devices together with their computational capabilities enables the implementation of novel interaction techniques to improve user performance in traditional mobile applications. Navigation assistance is an important area in the mobile domain, and probably Google Maps is the most popular example. This type of applications is highly demanding for userâs attention, especially in the visual channel. Tactile and auditory feedback have been studied as alternatives to visual feedback for navigation assistance to reduce this dependency. However, there is still room for improvement and more research is needed to understand, for example, how the three feedback modalities complement each other, especially with the appearance of new technology such as smart watches and new displays such as Google Glass. The goal of our work is to study how the users perceives multimodal feedback when their route is augmented with directional cues. Our results show that tactile guidance cues produced the worst user performance, both objectively and subjectively. Participants reported that vibration patterns were hard to decode. However, tactile feedback was an unobtrusive technique to inform participants when to look to the mobile screen or listen to the spoken directions. The results show that combining feedback modalities produces good user performance. more...
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