| 1. |
- Jung, Christian, et al.
(författare)
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A comparison of very old patients admitted to intensive care unit after acute versus elective surgery or intervention
- 2019
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Ingår i: Journal of critical care. - : W B SAUNDERS CO-ELSEVIER INC. - 0883-9441 .- 1557-8615. ; 52, s. 141-148
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Tidskriftsartikel (refereegranskat)abstract
- Background: We aimed to evaluate differences in outcome between patients admitted to intensive care unit (ICU) after elective versus acute surgery in a multinational cohort of very old patients (80 years; VIP). Predictors of mortality, with special emphasis on frailty, were assessed.Methods: In total, 5063 VIPs were induded in this analysis, 922 were admitted after elective surgery or intervention, 4141 acutely, with 402 after acute surgery. Differences were calculated using Mann-Whitney-U test and Wilcoxon test. Univariate and multivariable logistic regression were used to assess associations with mortality.Results: Compared patients admitted after acute surgery, patients admitted after elective surgery suffered less often from frailty as defined as CFS (28% vs 46%; p < 0.001), evidenced lower SOFA scores (4 +/- 5 vs 7 +/- 7; p < 0.001). Presence of frailty (CFS >4) was associated with significantly increased mortality both in elective surgery patients (7% vs 12%; p = 0.01), in acute surgery (7% vs 12%; p = 0.02).Conclusions: VIPs admitted to ICU after elective surgery evidenced favorable outcome over patients after acute surgery even after correction for relevant confounders. Frailty might be used to guide clinicians in risk stratification in both patients admitted after elective and acute surgery.
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| 2. |
- Chen, C., et al.
(författare)
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Using Crowdsourcing for Scientific Analysis of Industrial Tomographic Images
- 2016
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Ingår i: ACM Transactions on Intelligent Systems and Technology. - : Association for Computing Machinery (ACM). - 2157-6912 .- 2157-6904. ; 7:4
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Tidskriftsartikel (refereegranskat)abstract
- In this article, we present a novel application domain for human computation, specifically for crowdsourcing, which can help in understanding particle-tracking problems. Through an interdisciplinary inquiry, we built a crowdsourcing system designed to detect tracer particles in industrial tomographic images, and applied it to the problem of bulk solid flow in silos. As images from silo-sensing systems cannot be adequately analyzed using the currently available computational methods, human intelligence is required. However, limited availability of experts, as well as their high cost, motivates employing additional nonexperts. We report on the results of a study that assesses the task completion time and accuracy of employing nonexpert workers to process large datasets of images in order to generate data for bulk flow research. We prove the feasibility of this approach by comparing results from a user study with data generated from a computational algorithm. The study shows that the crowd is more scalable and more economical than an automatic solution. The system can help analyze and understand the physics of flow phenomena to better inform the future design of silos, and is generalized enough to be applicable to other domains.
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| 3. |
- Romanowski, A., et al.
(författare)
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Contextual processing of ECT measurement information towards detection of process emergency states
- 2014
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Ingår i: 13th International Conference on Hybrid Intelligent Systems, HIS 2013. - 9781479924394 ; , s. 291-297
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Konferensbidrag (refereegranskat)abstract
- This papers shows attempt of using prior knowledge in order to learn about the industrial process system behaviour. The system being studied here is the pneumatic conveying of solids monitored with electrical capacitance tomography (ECT). The prior knowledge is the non-invasive measurement information derived on the basis of intentionally introduced structural change in the experimental process flow rig. The focus is on the examination of pseudo-emergency states of bulk flow. Real case pneumatic transport failure usually consists in pipeline blockage. Such blockage typically develops starting as material slug build up. In contrast, our experiments investigate artificially induced flow pre-blockage states monitored with ECT measurement system. Collected measurement data are contextually processed in order to detect the pipeline state in sense of flow regime and flow behaviour. ECT raw data analysis strives to uncover a relation between measured values and flow change tendency. This research is aimed at giving rise to conclusions about possibility of contextual data processing in order to properly adjust pneumatic conveying control and a possible role of ECT records in this aspect. Authors show here that for now it is possible to detect abnormal process state such as blockage signal and the presented methodology coupled with nowadays computational techniques are anticipated to lead to abnormal states forecasting such as blockage threat recognition.
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| 4. |
- Romanowski, A., et al.
(författare)
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Design and implementation of a pervasive occupancy displaying system in an academic environment
- 2014
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Ingår i: 13th International Conference on Hybrid Intelligent Systems, HIS 2013. ; , s. 298-304
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Konferensbidrag (refereegranskat)abstract
- This paper describes the design of a system providing room occupancy information in a university campus. The system and its possible influence on the human environment are designed to enhance the work environment through pervasive information delivery. The work is motivated by recent advances in the domain of ubiquitous computing. The authors describe a case study of delivering a solution to university students informing them where they can find free spaces in rooms designated for quiet study. The data is available on the web and through ambient displays. The proof-of-concept study presents the methodology applied, discusses the design issues that were encountered by the project team and reflects on the devices and techniques used in the implementation. An application of standard image processing techniques to provide a contextualized, pervasive user-centered service is also depicted.
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| 5. |
- Romanowski, A., et al.
(författare)
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Towards supporting remote cheering during running races with drone technology
- 2017
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Ingår i: Conference on Human Factors in Computing Systems - Proceedings. - New York, NY, USA : ACM. - 9781450346566 ; Part F127655, s. 2867-2874
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Konferensbidrag (refereegranskat)abstract
- Copyright © 2017 by the Association for Computing Machinery, Inc. (ACM). The increasing availability of drones produces a number of opportunities for integrating them in everyday settings and using drones to create engaging experiences for users. In this paper, we investigate how drones can support amateur runners in their endeavours. We explore the possible roles for drones during amateur running races. Through two field studies and multiple semi-structured interviews, we gain new insights on how drones could augment the experience of both runners and supporters during organised races. Finally, we contribute a set of future directions for integrating drones into the sports experience.
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| 6. |
- Wozniak, Mikolaj, et al.
(författare)
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Gapeau: Enhancing the Sense of Distance to Others with a Head-Mounted Sensor
- 2022
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : ACM.
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Konferensbidrag (refereegranskat)abstract
- Human perception lacks the capabilities to accurately assess distance. The recent Covid-19 pandemic outbreak rendered this ability particularly important. Augmenting our sense of distance can help maintain safe separation from others when required. To explore how systems can help users maintain physical distance, we designed, implemented and evaluated Gapeau - a head-mounted system for augmenting the sense of distance. Our system uses proximity sensors and thermal sensing to detect and measure the distance to other people. We conducted a validation protocol, an experiment, in which we compared different feedback modalities, and an in-the-wild study to evaluate Gapeau's performance and suitability for use in social contexts. We found that our system enabled users to more accurately determine whether they were maintaining a safe distance from others. Vibration and auditory feedback were found most effective and usable. Gapeau was perceived as socially acceptable. Our work contributes insights for augmented sensing systems with social relevance.
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| 7. |
- Wróbel-Lachowska, Magdalena, et al.
(författare)
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‘That’s when I put it on’: stakeholder perspectives in large-scale remote health monitoring for older adults
- 2023
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Ingår i: Personal and Ubiquitous Computing. - 1617-4909 .- 1617-4917. ; 27:6, s. 2193-2210
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Tidskriftsartikel (refereegranskat)abstract
- Remote health monitoring (RHM) provides various benefits to older adults, but its use is still limited. Remote monitoring may help in avoiding emergencies and prolong users’ independence. To understand how to design systems which support older adults, we studied a large-scale remote health monitoring system. The system used fitness-grade smartwatches to monitor the vital signs of more than 2000 users constantly. To probe the lived experience of using RHM, we conducted an explorative interview study (N = 41) with operators, carers, and users of the RHM system. Our thematic analysis reveals that personalisation of care ecology is crucial for developing users’ confidence and trust in the system. We found that participation in RHM may catalyse positive changes in older adults’ lifestyles. Based on our findings, we formulate five recommendations for designing future health monitoring systems. Our work contributes to insights into the lived experience and stakeholder ecology of health monitoring systems.
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