| 1. |
- Glasbey, JC, et al.
(author)
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- 2021
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swepub:Mat__t
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| 2. |
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| 3. |
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| 4. |
- Aydin, Faruk, et al.
(author)
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Temporal, geochemical and geodynamic evolution of the Late Cretaceous subduction zone volcanism in the eastern Sakarya Zone, NE Turkey : Implications for mantle-crust interaction in an arc setting
- 2020
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In: Journal of Asian Earth Sciences. - : Elsevier. - 1367-9120 .- 1878-5786. ; 192
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Journal article (peer-reviewed)abstract
- The Late Cretaceous Artvin volcanic rocks (LCAVs) from the eastern Sakarya zone (ESZ) of NE Turkey are composed of mafic/basaltic (S1-Çatak and S2-Çağlayan) and felsic/acidic (S1-Kızılkaya and S2-Tirebolu) rock types that occurred in two successive stages: (i) first stage (S1: Turonian–Early Santonian) and (ii) second stage (S2: Late Santonian–Campanian). Clinopyroxene thermobarometric results point that the S2-Çağlayan basaltic rocks have crystallised at higher temperatures and under deeper crustal conditions than those of the S1-Çatak basaltic rocks.The LCAVs show a wide compositional spectrum, ranging from tholeiite to calc-alkaline/shoshonite and are typically represented by a geochemical composition resembling subduction-related arc rocks although the 87Sr/86Sr(i) (0.7044–0.7071) and ɛNd(i) values (−0.63 to + 3.47) as well as 206Pb/204Pb(i) (18.07–18.56), 207Pb/204Pb(i) (15.57–15.62) and 208Pb/204Pb(i) (37.12–38.55) ratios show very limited variation. The parent magmas of the S1-Çatak and S2-Çağlayan mafic volcanic rocks were derived from underplated basaltic melts that originated by partial melting of metasomatised spinel lherzolite and spinel-garnet lherzolite, respectively. It is proposed that the compositions of the S1-Kızılkaya (mainly dacitic) and S2-Tirebolu (rhyolitic to trachytic) felsic rocks were particularly controlled by metasomatised mantle–crust interaction and MASH zone + shallow crustal fractionation processes. Our data, together with data from previous studies, suggest that the S1- and S2-mafic and felsic rocks of the LCAVs (~95–75 Ma) are the products of two-stage volcanic event that took place during the northward subduction of the northern Neotethys Ocean (NNO).
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| 5. |
- Brenning, Magnus, et al.
(author)
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NeTraWeb - A Web-Based Traffic Flow Performance Meter
- 2006
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In: 4th Swedish National Computer Networking Workshop SNCNW 2006.
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Conference paper (peer-reviewed)abstract
- This paper presents a web-based traffic flow performance meter. The NeTraWeb tool configures and automates the measurement activities, including storage and presentation of the main performance parameters.
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| 6. |
- Burmeister, Jens, et al.
(author)
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Contention-Based Wireless Sensor Networks : A case study for ambient assisted living
- 2010
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In: Active Ageing, Smart Solutions, New Markets.
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Conference paper (peer-reviewed)abstract
- Wireless personal area networks have emerged as an important communication infrastructure in areas such as at-home healthcare and home automation, independent living and assistive technology. Initiatives towards interoperability and standardization are taken by several players. Zigbee Alliance has launched a profile for “Zigbee wireless sensor applications for health, wellness and fitness” [1]. The Continua Health Alliance promotes “an interoperable personal healthcare ecosystem”. They have published “design guidelines for the telehealth ecosystem” including the interface to personal area network health devices and electronic health record devices ([2], [3]). These examples show that wireless personal area networks, including body sensor networks, are becoming more mature and are considered to be a realistic alternative as communication infrastructure for demanding services. However, to transmit vital sign parameters from ECGs, pulse-oximeters, EEGs etc in wireless networks is also a challenge, especially if multiple sensors compete for access. Contention-based access networks offer simplicity and utilization advantages, but the drawback is unpredictable performance due to loss of transmitted packets.We have used the SHIMMER wireless sensor platform developed at Intel [4] in the living lab at the Centre for Health and Building at KTH in a case study to identify and evaluate performance problems. The full-scale living lab consists of two apartments especially equipped with modern technique for healthcare at home and assisted living.Our paper focuses on continuous monitoring of the heart activity using a wireless ECG based on the wireless personal area network (WPAN) standard IEEE 802.15.4. Results from performance tests in the living lab will be presented e.g. influence of equipment such as micro wave ovens. Since contention-based wireless access has no guarantees for the quality of the delivered service it is interesting to determine to what extent the received ECG signal is sensitive to loss of information. We have recorded ECG signals as well as emulated packet loss in existing ECG records from official databases. The result of two cardiologists´ assessment of ECGs with different loss ratio levels and patterns will be reported in the paper. One interesting conclusion is that a diagnosis is fully possible for ECGs with packet loss ratio up to at least 5%. This project is part of research at the School of Technology and Health at KTH.
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| 7. |
- Cippitelli, E., et al.
(author)
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Time synchronization and data fusion for RGB-Depth cameras and inertial sensors in AAL applications
- 2015
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In: 2015 IEEE International Conference on Communication Workshop, ICCW 2015. - : IEEE conference proceedings. - 9781467363051 ; , s. 265-270
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Conference paper (peer-reviewed)abstract
- Ambient Assisted Living applications often need to integrate data from multiple sensors, to provide consistent information on the observed phenomena. Data fusion based on samples from several sensors requires accurate time synchronization with sufficient resolution, depending on the sensor sampling frequency. This work presents a technical platform for the efficient and accurate synchronization of the data captured from RGB-Depth cameras and wearable inertial sensors, that can be integrated in AAL solutions. A case study of sensor data fusion for Timed Up and Go test is also presented and discussed.
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| 8. |
- Gasparrini, S., et al.
(author)
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Proposal and experimental evaluation of fall detection solution based on wearable and depth data fusion
- 2016
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In: ICT Innovations 2015. - Cham : Springer. - 9783319257334 - 9783319257310 ; , s. 99-108
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Conference paper (peer-reviewed)abstract
- Fall injury issues represent a serious problem for elderly in our society. These people want to live in their home as long as possible and technology can improve their security and independence. In this work we study the joint use of a camera based system and wearable devices, in the so called data fusion approach, to design a fall detection solution. The synchronization issues between the heterogeneous data provided by the devices are properly treated, and three different fall detection algorithms are implemented. Experimental results are also provided, to compare the proposed solutions.
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| 9. |
- Kornevs, Maksims, Universitetsadjunkt, 1986-, et al.
(author)
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Framework for Using Professional Engineering Tools to Develop Games in Post-Secondary Education
- 2023
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In: INTERNATIONAL JOURNAL OF SERIOUS GAMES. - : Serious Games Society. - 2384-8766. ; 10:1, s. 39-52
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Journal article (peer-reviewed)abstract
- Teaching is changing with increasing emphasis on teaching digitally to enable remote learning. While it gives more opportunities to engage students, it also makes it harder to learn professional skills, which is especially important for the engineering field. One problem might be the lack of professional tools for the digital education of engineers. The purpose of this work is to assess the feasibility of creating digital educational games by shaping professional tools themselves as games for post-secondary education, and to develop a framework for such a process. This article demonstrates a case for applying the proposed framework to develop a game for a communication network course using a computer network simulator. The findings of this work highlight the need to create such games in higher education based on professional tools.
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| 10. |
- Lindh, Thomas, 1950-, et al.
(author)
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A performance monitoring method for wireless sensor networks
- 2008
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In: PETRA '08 Proceedings of the 1st international conference on PErvasive Technologies Related to Assistive Environments. - New York : ACM. - 9781605580678
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Conference paper (peer-reviewed)abstract
- This paper presents a monitoring method and its implementation as a light-weight end-to-end performance meter for quality-demanding applications in wireless sensor networks. The use of performance feedback information for control and management is also considered. The method is evaluated in a wireless sensor network testbed for healthcare applications.
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