| 1. |
- Djebbar, Fatiha
(författare)
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Securing IoT data using steganography : A practical implementation approach
- 2021
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Ingår i: Electronics. - : MDPI. - 2079-9292. ; 10:21
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Tidskriftsartikel (refereegranskat)abstract
- Adding network connectivity to any “thing” can certainly provide great value, but it also brings along potential cybersecurity risks. To fully benefit from the Internet of Things “IoT” system’s capabilities, the validity and accuracy of transmitted data should be ensured. Due to the constrained environment of IoT devices, practical security implementation presents a great challenge. In this paper, we present a noise-resilient, low-overhead, lightweight steganography solution adequate for use in the IoT environment. The accuracy of hidden data is tested against corruption using multiple modulations and coding schemes (MCSs). Additive white Gaussian noise (AWGN) is added to the modulated data to simulate the noisy channel as well as several wireless technologies such as cellular, WiFi, and vehicular communications that are used between communicating IoT devices. The presented scheme is capable of hiding a high payload in audio signals (e.g., speech and music) with a low bit error rate (BER), high undetectability, low complexity, and low perceptibility. The proposed algorithm is evaluated using well-established performance evaluation techniques and has been demonstrated to be a practical candidate for the mass deployment of IoT devices.
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| 2. |
- Serholt, Sofia, 1986, et al.
(författare)
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Trouble and Repair in Child–Robot Interaction: A Study of Complex Interactions With a Robot Tutee in a Primary School Classroom
- 2020
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Ingår i: Frontiers in Robotics and AI. - : Frontiers Media SA. - 2296-9144. ; 7:46
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Tidskriftsartikel (refereegranskat)abstract
- Today, robots are studied and expected to be used in a range of social roles within classrooms. Yet, due to a number of limitations in social robots, robot interactions should be expected to occasionally suffer from troublesome situations and breakdowns. In this paper, we explore this issue by studying how children handle interaction trouble with a robot tutee in a classroom setting. The findings have implications not only for the design of robots, but also for evaluating their benefit in, and for, educational contexts. In this study, we conducted video analysis of children's group interactions with a robot tutee in a classroom setting, in order to explore the nature of these troubles in the wild. Within each group, children took turns acting as the primary interaction partner for the robot within the context of a mathematics game. Specifically, we examined what types of situations constitute trouble in these child–robot interactions, the strategies that individual children employ to cope with this trouble, as well as the strategies employed by other actors witnessing the trouble. By means of Interaction Analysis, we studied the video recordings of nine group interaction sessions (n = 33 children) in primary school grades 2 and 4. We found that sources of trouble related to the robot's social norm violations, which could be either active or passive. In terms of strategies, the children either persisted in their attempts at interacting with the robot by adapting their behavior in different ways, distanced themselves from the robot, or sought the help of present adults (i.e., a researcher in a teacher role, or an experimenter) or their peers (i.e., the child's classmates in each group). In terms of the witnessing actors, they addressed the trouble by providing guidance directed at the child interacting with the robot, or by intervening in the interaction. These findings reveal the unspoken rules by which children orient toward social robots, the complexities of child–robot interaction in the wild, and provide insights on children's perspectives and expectations of social robots in classroom contexts.
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| 3. |
- Bernhardsson, Lennarth, 1954-, et al.
(författare)
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The Great Learning Experience : An attempt to understand learning from the wies of the millenial learners.
- 2011
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Ingår i: Connecting Communities. - Palawan. ; , s. 1-5
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Millenial learners are individuals born after 1985 with very wide exposure to various types of media enhanced by technology. They are persons who had listened to music while in the wombof their mothers and had watched television starting at age 0. Most of them would have hada music player or a game pad or a mobile phone at age 8. (Deterle, Dede and Schrier, 2008)These millenial learners grew up with constant web connectivity at their fingertips to assist themin their homeworks.The present pedagogies our academic institutions employ to support the learning style ofthe web generation of students may not be as suitable. Social constructivism, transformativelearning or problem-based learning, while prevalent in the Asian context, may be more perfectfor cognitively dynamic students. Our students nowadays are more adept to constructingknowledge, content (Attwell, 2007) and even more independent in their learning priorities.This study attempts to understand the new learning practices among our students. This studyattempts to find out how college students define what a good learning experience is. It is alsothe intention of the study to explore new educational practices and hopefully drive ways ofdesigning and developing the future of learning activities.The study was conceived in May 2011 and was planned to collect data in the form of shortvideos in a span of six months, from June to December. There will be two sets of samples, onefrom the students of De La Salle University of the Philippines (DLSU) and the other from thestudents of University West (UW) in Sweden.The experiment asked for a two minute video that will be created and expressed by anindividual or group of students. This meant planning and organization to compose the thoughts,the message and the content of the video. Since this contains the expression of the studentsthemselves, the self-expression equates to a great degree of authenticity.This paper will impart the work-in-progress of this experiment, the Great Learning Experience.To date, there are twenty videos from DLSU and fifteen videos from UW. This paper will tell themethods used in the different classes and the initial findings. Comparison of the UW and DLSUvideos is not included in the paper.
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| 4. |
- Flensburg, Per, 1946-
(författare)
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Hur medieteknik uppkom
- 2021. - 1:1
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Ingår i: Introduktion till medieteknik. - : Studentlitteratur AB. - 9789144141671 ; , s. 35-44
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Ljungdahl Eriksson, Martin, 1982-, et al.
(författare)
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The Sound Bubble : A context-sensitive space in the space
- 2017
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Ingår i: Organised Sound. - Cambridge : Cambridge University Press. - 1355-7718 .- 1469-8153. ; 22:1, s. 130-139
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Tidskriftsartikel (refereegranskat)abstract
- The design of sonic environments is in need of more active strategies, taking into account not only the physical but also the social and sensorial aspects of a place. This implies abandoning traditional, mono-disciplinary responses in favour of interdisciplinary methods and approaches. In this study we explored the possibility of inserting context-sensitive sound textures to improve the experience of an activity-based office workplace. For this purpose, we developed the concept of the ’sound bubble’ - a micro-space in which the user is embedded by a semi-transparent added sound environment that will operate as a subtle sound mask, attracting the attention without needing to hide the disturbing environment. This should help users (the workers) to stay in an ’everyday listening’ mode. This means, not focusing on the environment in particular but on their tasks, while preserving the link with the surrounding space and activities.
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| 6. |
- Oscott, Henrik, 1978-
(författare)
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Öppna licenser och källkoder
- 2021. - 1:1
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Ingår i: Introduktion till medieteknik. - : Studentlitteratur AB. - 9789144141671 ; , s. 281-290
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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