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  • 1.
    Abtahi, Farhad
    et al.
    KTH, Skolan för teknik och hälsa (STH). Karolinska Institute, Sweden.
    Anund, A.
    Fors, C.
    Seoane, Fernando
    KTH, Skolan för teknik och hälsa (STH), Medicinsk teknik, Data- och elektroteknik. Karolinska Institute, Sweden.
    Lindecrantz, Kaj
    KTH, Skolan för teknik och hälsa (STH), Medicinsk teknik, Data- och elektroteknik. Karolinska Institute, Sweden.
    Association of drivers’ sleepiness with heart rate variability: A pilot study with drivers on real roads2017Inngår i: EMBEC & NBC 2017, Springer, 2017, Vol. 65, s. 149-152Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Vehicle crashes lead to huge economic and social consequences, and one non-negligible cause of accident is driver sleepiness. Driver sleepiness analysis based on the monitoring of vehicle acceleration, steering and deviation from the road or physiological and behavioral monitoring of the driver, e.g., monitoring of yawning, head pose, eye blinks and eye closures, electroencephalogram, electrooculogram, electromyogram and electrocardiogram (ECG), have been used as a part of sleepiness alert systems. Heart rate variability (HRV) is a potential method for monitoring of driver sleepiness. Despite previous positive reports from the use of HRV for sleepiness detection, results are often inconsistent between studies. In this work, we have re-evaluated the feasibility of using HRV for detecting drivers’ sleepiness during real road driving. A database consists of ECG measurements from 10 drivers, driving during morning, afternoon and night sessions on real road were used. Drivers have reported their average sleepiness level by using the Karolinska sleepiness scale once every five minutes. Statistical analysis was performed to evaluate the potential of HRV indexes to distinguish between alert, first signs of sleepiness and severe sleepiness states. The results suggest that individual subjects show different reactions to sleepiness, which produces an individual change in HRV indicators. The results motivate future work for more personalized approaches in sleepiness detection.

  • 2. Addessi, A. R.
    et al.
    Anelli, F.
    Benghi, D.
    Friberg, Anders
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Corrigendum: Child-computer interaction at the beginner stage of music learning: Effects of reflexive interaction on children's musical improvisation [Front. Psychol.8 (2017)(65)]. Doi: 10.3389/fpsyg.2017.000652017Inngår i: Frontiers in Psychology, E-ISSN 1664-1078, Vol. 8, nr MAR, artikkel-id 399Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A corrigendum on Corrigendum: Child-Computer Interaction at the Beginner Stage of Music Learning: Effects of Reflexive Interaction on Children's Musical Improvisation by Addessi, A. R., Anelli, F., Benghi, D., and Friberg, A. (2017). Front. Psychol. 8:65. doi: 10.3389/fpsyg.2017.00065 In the original article, there was an error. "she plays C3" was used instead of "it plays C3." A correction has been made to Observation and Theoretical Framework of Reflexive Interaction, paragraph 3: The little girl plays two consecutive notes, C2 and A2, and then stops to wait for the response of the system. The system responds by repeating the same notes. The child then play a single note, G2, and the system responds with a single note but this time introduces a variation: it plays C3, thus introducing a higher register. The girl, following the change introduced by the system, moves toward the higher register and plays a variant of the initial pattern, namely: D2-A2-E2-C3, and introduces a particular rhythm pattern. This "reflexive" event marks the beginning of a dialogue based on repetition and variation: the rhythmic-melodic pattern will be repeated and varied by both the system and the child in consecutive exchanges, until acquiring the form of a complete musical phrase. At some point in the dialogue, the child begins to accompany the system's response with arm movements synchronized with the rhythmic-melodic patterns, creating a kind of music-motor composition. In addition, EG1 and EG2 are incorrectly referred to within the text. A correction has been made to Duet Task, sub-section Results for Each Evaluative Criterion of the Duet Task, paragraph Reflexive Interaction: The data of Reflexive Interaction show that the EG2 obtained the highest score (4.17), followed by the CG (3.33) and the EG1 (2.61); see Table 6 and Figure 7. The difference between EG2, which only use the system with reflexive interaction, and EG1, which did not use the system with reflexive interaction, is significant (p = 0.043). Therefore, it could be said that the use of MIROR-Impro can enhance the use of the reflexive behaviors: mirroring, turn-taking, and co-regulation. We observed a statistically significant correlation between the Reflexive Interaction and the total score (r = 0.937; p < 0.01), and all other evaluative criteria, with correlations ranging from r = 0.87 (p < 0.01) for Musical Quality to r = 0.92 (p < 0.01) for Musical Organization. Thus, the higher the children's use of reflexive interaction, the better their results in each criterion and in the ability to improvise. This result can support the hypothesis that reflexive interaction is a fundamental component of musical improvised dialog. Instead, although the differences between the CG and the Experimental Groups 1 and 2 indicate that the use of the MIROR Impro appears to be "necessary" (CG > EG1) and "sufficient" (CG < EG2) to improve the ability to improvise, we cannot generalize these results because the results are not statistically significant (t-test, comparing CG and EG1: p = 0.388; CG and EG2: p = 0.285). Finally, due to the resolution of Figures 5-9 being low, they have been replaced with new figures with a higher resolution. The corrected Figures, Figures 5-9 appear below. The authors apologize for these errors and state that these do not change the scientific conclusions of the article in any way.

  • 3. Addessi, Anna Rita
    et al.
    Anelli, Filomena
    Benghi, Diber
    Friberg, Anders
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Child-Computer Interaction at the Beginner Stage of Music Learning: Effects of Reflexive Interaction on Children's Musical Improvisation2017Inngår i: Frontiers in Psychology, E-ISSN 1664-1078, Vol. 8, artikkel-id 65Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this article childrens musical improvisation is investigated through the reflexive interaction paradigm. We used a particular system, the MIROR-Impro, implemented in the framework of the MIROR project (EC-FP7), which is able to reply to the child playing a keyboard by a reflexive output, mirroring (with repetitions and variations) her/his inputs. The study was conducted in a public primary school, with 47 children, aged 6-7. The experimental design used the convergence procedure, based on three sample groups allowing us to verify if the reflexive interaction using the MIROR-Impro is necessary and/or sufficient to improve the childrens abilities to improvise. The following conditions were used as independent variables: to play only the keyboard, the keyboard with the MIROR-Impro but with not-reflexive reply, the keyboard with the MIROR-Impro with reflexive reply. As dependent variables we estimated the childrens ability to improvise in solos, and in duets. Each child carried out a training program consisting of 5 weekly individual 12 min sessions. The control group played the complete package of independent variables; Experimental Group 1 played the keyboard and the keyboard with the MIROR-Impro with not-reflexive reply; Experimental Group 2 played only the keyboard with the reflexive system. One week after, the children were asked to improvise a musical piece on the keyboard alone (Solo task), and in pairs with a friend (Duet task). Three independent judges assessed the Solo and the Duet tasks by means of a grid based on the TAI-Test for Ability to Improvise rating scale. The EG2, which trained only with the reflexive system, reached the highest average results and the difference with EG1, which did not used the reflexive system, is statistically significant when the children improvise in a duet. The results indicate that in the sample of participants the reflexive interaction alone could be sufficient to increase the improvisational skills, and necessary when they improvise in duets. However, these results are in general not statistically significant. The correlation between Reflexive Interaction and the ability to improvise is statistically significant. The results are discussed on the light of the recent literature in neuroscience and music education.

  • 4.
    Ahmad Termida, Nursitihazlin
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap, Systemanalys och ekonomi. Universiti Tun Hussein Onn Malaysia, Faculty of Civil and Environmental Engineering, Department of Infrastructure and Geomatic Engineering.
    Understanding Individuals' Learning and Decision Processes in a Changing Environment by Using Panel Data2017Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    When a new transport service is introduced, people have to learn and familiarize themselves with the new service before they decide to adopt it. These processes are developed over time, thus produce dynamics in individuals’ behavioural responses towards the service. This affects the demand of the new service, thus affect revenues. Available studies have examined the factors influencing these responses from microeconomic perspectives. The influence of the theory-based subjective factors has not been examined empirically. Understanding these would assist transport and urban planners to design a better marketing strategy to increase the market share of the new service. A change in seasons affect individuals’ activity-travel decisions, thus produce dynamics in activitytravel patterns in different seasons. Individuals’ constraints, in a form of mandatory activities (working/studying), are influencing individuals’ decisions to participate in day-to-day nonmandatory activities (leisure and routine activities). The interdependency between travel demand, time allocation and mode choice that considers interactions between mandatory and non-mandatory activities, in different seasons is less explored. Understanding these would assist transport planners and operators to manage travel demand strategies across different seasons of the year and provide better transportation systems for all individuals. This thesis includes five papers. Paper I explores individuals’ characteristics of the quick-response and the adopters of the new public transport (PT) service and examines the temporal effects. Paper II investigates the subjective factors influencing a quick-response to the new PT service by proposing a modified attitude-behaviour framework. Paper III and IV analyse the effects of seasonal variations and individuals’ constraints on their day-to-day activity-travel decisions and patterns. Paper V analyses the attrition and fatigue in the two-week travel diary panel survey instrument.

    Fulltekst (pdf)
    Nursitihazlin's Kappa
  • 5.
    Ahmad Termida, Nursitihazlin
    et al.
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap, Systemanalys och ekonomi. Universiti Tun Hussein Onn Malaysia, Faculty of Civil and Environmental Engineering, Department of Infrastructure and Geomatic Engineering.
    Susilo, Yusak
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap, Systemanalys och ekonomi.
    Franklin, Joel
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap, Systemanalys och ekonomi.
    Subjective Factors Influencing Individual's Response to a New Public Transport ServiceManuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    The timing and nature of people’s responses can be expected to vary when a new element enter their environment. For example, when an individual is provided with a new or modified transport service. This time-scale of behavioural responses will affect the patronage of, and short- and long-term demands on the new service over time. Understanding the underlying factors that influence an individual’s response over time to a new or modified transport service would enable us to identify trigger factors that make the new service attractive from an individual’s point of view. Chatterjee (2001) and Douglas (2003) argued that motives other than instrumental factors related to public transport use, such as attitudes, awareness, travel habits and learning processes, can influence individual responses over time to changes in the travel environment. Unfortunately, despite their importance, there have been few studies that examined this argument empirically. To address this research gap, this paper aims to investigate the influences of subjective factors on individuals’ responses to the introduction of a modified public transport (PT) service over time by proposing and testing an alternative model that modifies the theory of planned behaviour (TPB) model framework. This paper also aims to investigate the behavioural change in terms of attitudes and perceptions on individuals’ resources and constraints in using a modified PT service over time after its introduction. The case study involves the new extension of a tram line connecting the suburbs of Alvik and Solna Centrum in Stockholm, Sweden. Four waves of a panel survey were conducted with 96 individuals who lived along the new service, from just before the new service was introduced and until seven months after its introduction. A structural equation modelling technique was used to estimate the relationships between behavioural constructs and panel data, then incorporate them into a discrete choice model. The results show that intention influences individual’s quick-response choice. The panel analysis shows that past behaviour in using the new service influenced current behaviour, and that perceived walking distance in using the service consistently influenced the frequency of using the new service over time.

  • 6.
    Angelopoulos, Anastasios N.
    et al.
    Univ Calif Berkeley, Berkeley, CA 94720 USA..
    Martel, Julien N. P.
    Stanford Univ, Stanford, CA 94305 USA..
    Kohli, Amit P.
    Univ Calif Berkeley, Berkeley, CA 94720 USA..
    Conradt, Jörg
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Beräkningsvetenskap och beräkningsteknik (CST).
    Wetzstein, Gordon
    Stanford Univ, Stanford, CA 94305 USA..
    Event-Based Near-Eye Gaze Tracking Beyond 10,000 Hz2021Inngår i: IEEE Transactions on Visualization and Computer Graphics, ISSN 1077-2626, E-ISSN 1941-0506, Vol. 27, nr 5, s. 2577-2586Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The cameras in modern gaze-tracking systems suffer from fundamental bandwidth and power limitations, constraining data acquisition speed to 300 Hz realistically. This obstructs the use of mobile eye trackers to perform, e.g., low latency predictive rendering, or to study quick and subtle eye motions like microsaccades using head-mounted devices in the wild. Here, we propose a hybrid frame-event-based near-eye gaze tracking system offering update rates beyond 10,000 Hz with an accuracy that matches that of high-end desktop-mounted commercial trackers when evaluated in the same conditions. Our system, previewed in Figure 1, builds on emerging event cameras that simultaneously acquire regularly sampled frames and adaptively sampled events. We develop an online 2D pupil fitting method that updates a parametric model every one or few events. Moreover, we propose a polynomial regressor for estimating the point of gaze from the parametric pupil model in real time. Using the first event-based gaze dataset, we demonstrate that our system achieves accuracies of 0.45 degrees -1.75 degrees for fields of view from 45 degrees to 98 degrees. With this technology, we hope to enable a new generation of ultra-low-latency gaze-contingent rendering and display techniques for virtual and augmented reality.

  • 7.
    Artman, Henrik
    et al.
    Dept. of Communication studies, Linköping University.
    Garbis, Christer
    Dept. of Communication studies, Linköping University.
    Team communication and coordination as distributed cognition1998Inngår i: Proceedings of 9th Conference of Cognitive Ergonomics: Cognition and cooperation / [ed] T. Green, L. Bannon, C. Warren, Buckley, 1998, s. 151-156Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this paper we argue that the predominant modelsof Situation Awareness (SA) are inadequate for thestudy of systems operated by teams. The reason forthis is that these models are based on mentalisticassumptions focusing almost exclusively onindividuals. We suggest that, to study the control ofdynamic systems, it is necessary to shift the unit ofanalysis from the individual to the whole cognitivesystem comprising a team of people as well as theartefacts which they use. Thus, our vantage point isthe theoretical framework of distributed cognition.Through two field studies we try to demonstrate howteam situation awareness is actively constructed viathe communicative practices which the team uses inits work.

    Fulltekst (pdf)
    fulltext
  • 8.
    Arvidsson, Martin
    et al.
    Department of Psychology, Stockholm University.
    Skedung, Lisa
    KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
    Aikala, Maiju
    Oy Keskuslaboratorio - Centrallaboratorium Ab.
    Danerlöv, Katrin
    YKI Institute for Surface Chemistry.
    Kettle, John
    Oy Keskuslaboratorio - Centrallaboratorium Ab.
    Rutland, Mark
    KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
    Berglund, Birgitta
    Department of Psychology, Stockholm University.
    Haptic perception of fine surface texture: Psychophysical interpretation of the multidimensional spaceManuskript (preprint) (Annet vitenskapelig)
  • 9.
    Besenecker, U. C.
    et al.
    RPI.
    Bullough, J. D.
    Investigating visual mechanisms underlying scene brightness2017Inngår i: Lighting Research and Technology, ISSN 1477-1535, E-ISSN 1477-0938, Vol. 49, nr 1, s. 16-32Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Short-wavelength (<500 nm) output of light sources enhances scene brightness perception in the low-to-moderate photopic range. This appears to be partially explained by a contribution from short-wavelength cones. Recent evidence from experiments on humans suggests that intrinsically photosensitive retinal ganglion cells (ipRGCs) containing the photopigment melanopsin might also contribute to spectral sensitivity for scene brightness perception. An experiment was conducted to investigate this possibility at two different light levels, near 10 lx and near 100 lx. Subjects provided forced-choice brightness judgments and relative brightness magnitude judgments when comparing two different amber-coloured stimuli with similar chromaticities. A provisional brightness metric including an ipRGC contribution was able to predict the data with substantially smaller errors than a metric based on cone input only.

  • 10.
    Besenecker, U. C.
    et al.
    RPI.
    Bullough, J. D.
    Radetsky, L. C.
    Spectral sensitivity and scene brightness at low to moderate photopic light levels2016Inngår i: Lighting Research and Technology, ISSN 1477-1535, E-ISSN 1477-0938, Vol. 48, nr 6, s. 676-688Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A study of scene brightness perception was conducted to assess whether spectral sensitivity for scene brightness perception at low to moderate light levels (∼3-110 lux) could be partially explained by a contribution of intrinsically photosensitive retinal ganglion cells (ipRGC). An experiment was conducted at two different light level ranges and using two different spectral power distributions. The results suggest an increase in short-wavelength spectral sensitivity as a function of increasing light level. The results also confirm that including ipRGC as well as cone photoreceptor input in scene brightness spectral sensitivity resulted in improved predictions compared to including either cone input only or rod as well as cone input.

  • 11.
    Besenecker, Ute C
    et al.
    RPI.
    Bullough, John D
    Progress in modelling scene brightness2015Inngår i: Proceedings of the 28th Session of Commission Internationale de l’Éclairage / [ed] CIE, 2015, s. 1511-1520Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Scene brightness is a sensation that is not well predicted by light quantities measured inphotopic illuminance or luminance.Experiments with light sources of different spectral compositions indicate that scenesilluminated by sources with greater short-wavelength (<500 nm) output are perceived as beingbrighter than those illuminated by sources with less short-wavelength content at the samelight level. This has been shown to be true not only under mesopic, but also under photopicconditions. Furthermore, the relative impact of short-wavelength contributions to scenebrightness perception appears to increase with light level.Experimental results are consistent with short-wavelength (S) cone as well as melanopsincontributions to scene brightness, in addition to contributions from V(λ). An empirical modelthat incorporates increasing S-cone and melanopsin contributions with increasing light levelsgave better predictions than a model that only incorporates an S-cone increase. This wasconfirmed in a series of follow-up experiments. 

  • 12.
    Besenecker, Ute
    et al.
    RPI.
    Krueger, Ted
    Pearson, Zachary
    Bullough, John D.
    Gerlach, Robert
    The experience of equivalent luminous colors at architectural scale2018Inngår i: Cultura e Scienza del Colore - Color Culture and Science, ISSN 2384-9568, Vol. 10, nr 0, s. 13-20Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Luminous color used in architectural settings impacts our perception of space and ambiance. With light emitting diode, solid state lighting technology the possibilities of customizing light spectra are manifold, and colored light can be mixed and matched using a variety of different spectral compositions. We conducted several experiments at architectural scale to explore whether stimuli closely matched for chromaticity and light level would produce recognizable differences in visual and visceral qualities.Study 1 used qualitative research methods; during the experiment, participants were free to walk from one illuminated space to another to compare conditions close-up and from afar. Study 2 used quantitative research methods; participants were situated in a fixed viewing location and responded to a questionnaire that was designed based on the responses from Study 1. In Study 3 blood pressure was measured in response to all of the lighting conditions.Overall, the results showed that subjects perceived differences in the visual qualities of the conditions. The results also showed significant differences in affective qualities and physiological responses between some of the conditions.

  • 13.
    Bjurling, Johan
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Timing in piano music: Testing a model of melody lead2008Inngår i: Proc. of the 10th International Conference on Music Perception and Cognition, Sapporo, Japan, 2008Konferansepaper (Fagfellevurdert)
  • 14.
    Boon, Edward
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell marknadsföring.
    A Qualitative Study of Consumer-Generated Videos about Daily Deal Web sites2013Inngår i: Psychology & Marketing, ISSN 0742-6046, E-ISSN 1520-6793, Vol. 30, nr 10, s. 843-849Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Deal of the day, also known as social couponing, is an e-commerce business model that offers consumers heavily discounted deals on a regular (daily) basis, and gives merchants access to a mailing list of potential new customers in exchange for a commission. There are thousands of deal Web sites worldwide, offering deals from industries as diverse as hospitality, consumer electronics, fashion, and medical services. This study was performed to learn more about consumers' attitude toward deal of the day, and their motivations for purchasing (or not purchasing) daily deals. A systematic qualitative methodology called BASIC IDS was used to analyze 30 consumer-generated YouTube videos about deal Web sites. The analysis showed that many deal-prone consumers can be considered deal mavens; they take effort to learn about different sites and offerings and are eager to share their knowledge with others. Although many of these mavens show hedonistic shopping tendencies, others appear to focus mainly on utility, that is, monetary savings. Consumers with a negative attitude toward deal of the day are often worried about receiving poor service, and some believe that redeeming a deal voucher makes them look cheap.

  • 15.
    Boork, Magdalena
    et al.
    RISE.
    Katzeff, Cecilia
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Strategiska hållbarhetsstudier.
    Activity-based offices: Synergies and trade-offs between energy efficiency and employees' work environment2019Inngår i: Eceee Summer Study Proceedings, European Council for an Energy Efficient Economy , 2019, s. 1499-1504Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Energy use in office buildings is significant. At the same time, more than half of the Swedish office buildings were erected before 1970, which means that extensive refurbishments and new establishments are expected. Requirements on efficiency in terms of costs, space and energy use are then usually high. To achieve both energy efficient buildings and stimulating workplaces, there is a trend towards the implementation of activity-based offices. The activity-based workplace is structured to fit the employees' work tasks and may give an impression of stimulating employees' creativity. However, studies show that the work environment does not suit everyone. Instead, mainly managers and employees who frequently interact with others are supported by activity-based working. Practical examples indicate that the efficiency of buildings may affect the employees´ wellbeing and work environment negatively - i.e. aspects linked to social sustainability. Nevertheless, knowledge on synergies and trade-offs between environmental and social sustainability goals is limited regarding the workplace in energy efficient buildings. It has for instance been shown previously that studies on green buildings mainly focus on environmental sustainability aspects, while the social dimension is basically lacking. This includes aspects of physical and psychological well-being. Still, understanding the interaction between different sustainability dimensions is crucial for implementing sustainability work in practice. The study presented in this paper is part of an ongoing Swedish research project exploring the consequences of energy efficient office buildings on the employees' work environment based on case studies and literature. This paper presents a literature review of scientific papers on the topic and describes the outline of the case studies to be executed during spring 2019. It is concluded that scientific literature focusing on both energy efficiency and work environment at the activity-based workplace is scarce. Still, to ensure that environmental benefits are not realized at the expense of the employees' well-being, it is highly important to further explore potential synergies and trade-offs between social and environmental sustainability factors. 

  • 16. Borosund, Elin
    et al.
    Cvancarova, Milada
    Moore, Shirley M.
    Ekstedt, Mirjam
    KTH, Skolan för teknik och hälsa (STH), Hälso- och systemvetenskap, Systemsäkerhet och organisation.
    Ruland, Cornelia M.
    Preliminary Results Of Two Web-Based Interventions On Symptom Distress, Anxiety And Depression Among Breast Cancer Patients2014Inngår i: Annals of Behavioral Medicine, ISSN 0883-6612, E-ISSN 1532-4796, Vol. 47, s. S188-S188Artikkel i tidsskrift (Annet vitenskapelig)
  • 17.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Real-time visualization of musical expression2004Inngår i: Proceedings of Network of Excellence HUMAINE Workshop "From Signals to Signs of Emotion and Vice Versa", 2004, s. 19-23Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A system for real-time feedback of expressive music performance is presented.The feedback is provided by using a graphical interface where acoustic cues arepresented in an intuitive fashion. The graphical interface presents on the computerscreen a three-dimensional object with continuously changing shape, size,position, and colour. Some of the acoustic cues were associated with the shape ofthe object, others with its position. For instance, articulation was associated withshape, staccato corresponded to an angular shape and legato to a rounded shape.The emotional expression resulting from the combination of cues was mapped interms of the colour of the object (e.g., sadness/blue). To determine which colourswere most suitable for respective emotion, a test was run. Subjects rated how welleach of 8 colours corresponds to each of 12 music performances expressingdifferent emotions.

  • 18.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    What is the color of that music performance?2005Inngår i: Proceedings of the International Computer Music Conference - ICMC 2005, Barcelona, 2005, s. 367-370Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The representation of expressivity in music is still a fairlyunexplored field. Alternative ways of representing musicalinformation are necessary when providing feedback onemotion expression in music such as in real-time tools formusic education, or in the display of large music databases.One possible solution could be a graphical non-verbal representationof expressivity in music performance using coloras index of emotion. To determine which colors aremost suitable for an emotional expression, a test was run.Subjects rated how well each of 8 colors and their 3 nuancescorresponds to each of 12 music performances expressingdifferent emotions. Performances were playedby professional musicians with 3 instruments, saxophone,guitar, and piano. Results show that subjects associateddifferent hues to different emotions. Also, dark colorswere associated to music in minor tonality and light colorsto music in major tonality. Correspondence betweenspectrum energy and color hue are preliminary discussed.

  • 19.
    Bresin, Roberto
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    de Witt, Anna
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Papetti, Stefano
    University of Verona.
    Civolani, Marco
    University of Verona.
    Fontana, Federico
    University of Verona.
    Expressive sonification of footstep sounds2010Inngår i: Proceedings of ISon 2010: 3rd Interactive Sonification Workshop / [ed] Bresin, Roberto; Hermann, Thomas; Hunt, Andy, Stockholm, Sweden: KTH Royal Institute of Technology, 2010, s. 51-54Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this study we present the evaluation of a model for the interactive sonification of footsteps. The sonification is achieved by means of specially designed sensored-shoes which control the expressive parameters of novel sound synthesis models capable of reproducing continuous auditory feedback for walking. In a previousstudy, sounds corresponding to different grounds were associated to different emotions and gender. In this study, we used an interactive sonification actuated by the sensored-shoes for providing auditory feedback to walkers. In an experiment we asked subjects to walk (using the sensored-shoes) with four different emotional intentions (happy, sad, aggressive, tender) and for each emotion we manipulated the ground texture sound four times (wood panels, linoleum, muddy ground, and iced snow). Preliminary results show that walkers used a more active walking style (faster pace) when the sound of the walking surface was characterized by an higher spectral centroid (e.g. iced snow), and a less active style (slower pace) when the spectral centroid was low (e.g. muddy ground). Harder texture sounds lead to more aggressive walking patters while softer ones to more tender and sad walking styles.

  • 20.
    Bresin, Roberto
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Delle Monache, Stefano
    University of Verona.
    Fontana, Federico
    University of Verona.
    Papetti, Stefano
    University of Verona.
    Polotti, Pietro
    University of Verona.
    Visell, Yon
    McGill University.
    Auditory feedback through continuous control of crumpling sound synthesis2008Inngår i: Proceedings of Sonic Interaction Design: Sound, Information and Experience. A CHI 2008 Workshop organized by COST Action IC0601, IUAV University of Venice , 2008, s. 23-28Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A realtime model for the synthesis of crumpling sounds ispresented. By capturing the statistics of short sonic transients which give rise to crackling noise, it allows for a consistent description of a broad spectrum of audible physical processes which emerge in several everyday interaction contexts.The model drives a nonlinear impactor that sonifies every transient, and it can be parameterized depending on the physical attributes of the crumpling material. Three different scenarios are described, respectively simulating the foot interaction with aggregate ground materials, augmenting a dining scenario, and affecting the emotional content of a footstep sequence. Taken altogether, they emphasize the potential generalizability of the model to situations in which a precise control of auditory feedback can significantly increase the enactivity and ecological validity of an interface.

  • 21.
    Bresin, Roberto
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    Friberg, Anders
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Emotion rendering in music: Range and characteristic values of seven musical variables2011Inngår i: Cortex, ISSN 0010-9452, E-ISSN 1973-8102, Vol. 47, nr 9, s. 1068-1081Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Many studies on the synthesis of emotional expression in music performance have focused on the effect of individual performance variables on perceived emotional quality by making a systematical variation of variables. However, most of the studies have used a predetermined small number of levels for each variable, and the selection of these levels has often been done arbitrarily. The main aim of this research work is to improve upon existing methodologies by taking a synthesis approach. In a production experiment, 20 performers were asked to manipulate values of 7 musical variables simultaneously (tempo, sound level, articulation, phrasing, register, timbre, and attack speed) for communicating 5 different emotional expressions (neutral, happy, scary, peaceful, sad) for each of 4 scores. The scores were compositions communicating four different emotions (happiness, sadness, fear, calmness). Emotional expressions and music scores were presented in combination and in random order for each performer for a total of 5 x 4 stimuli. The experiment allowed for a systematic investigation of the interaction between emotion of each score and intended expressed emotions by performers. A two-way analysis of variance (ANOVA), repeated measures, with factors emotion and score was conducted on the participants' values separately for each of the seven musical factors. There are two main results. The first one is that musical variables were manipulated in the same direction as reported in previous research on emotional expressive music performance. The second one is the identification for each of the five emotions the mean values and ranges of the five musical variables tempo, sound level, articulation, register, and instrument. These values resulted to be independent from the particular score and its emotion. The results presented in this study therefore allow for both the design and control of emotionally expressive computerized musical stimuli that are more ecologically valid than stimuli without performance variations.

  • 22.
    Bresin, Roberto
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Friberg, Anders
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Influence of Acoustic Cues on the Expressive Performance of Music2008Inngår i: Proceedings of the 10th International Conference on Music Perception and Cognition, Sapporo, Japan, 2008Konferansepaper (Fagfellevurdert)
  • 23.
    Broms, Loove
    et al.
    Interactive Intstitute.
    Katzeff, Cecilia
    Interactive Institute.
    Bång, Magnus
    Linköping University, Department of Computer and Information Science.
    Nyblom, Åsa
    Interactive Institute.
    Ilstedt Hjelm, Sara
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.), Produkt- och tjänstedesign.
    Ehrnberger, Karin
    KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.), Produkt- och tjänstedesign.
    Coffee Maker Patterns and the Design of Energy Feedback Artefacts2010Inngår i: DIS '10 Proceedings of the 8th ACM Conference on Designing Interactive Systems, 2010, s. 93-102Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Smart electricity meters and home displays are being installed in people’s homes with the assumption that households will make the necessary efforts to reduce their electricity consumption. However, present solutions do not sufficiently account for the social implications of design. There is a potential for greater savings if we can better understand how such designs affect behaviour. In this paper, we describe our design of an energy awareness artefact – the Energy AWARE Clock – and discuss it in relation to behavioural processes in the home. A user study is carried out to study the deployment of the prototype in real domestic contexts for three months. Results indicate that the Energy AWARE Clock played a significant role in drawing households’ attention to their electricity use. It became a natural part of the household and conceptions of electricity became naturalized into informants’ everyday language.

  • 24. Bullough, J. D.
    et al.
    Besenecker, Ute
    RPI.
    Snyder, J. D.
    Skinner, N. P.
    Work zone lighting and visual performance: Analysis and Demonstration2013Inngår i: Transportation Research Record, ISSN 0361-1981, E-ISSN 2169-4052, nr 2337, s. 25-34Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In part because of the potential for high levels of glare from work zone illumination, recommendations for light levels from work zone illumination systems are substantially higher than for levels used along roadways in non-work zone locations. In a two-part study, requirements for work zone illumination light levels were assessed. First, levels for workers varying in age from 20 to 60 years were evaluated with the relative visual performance model, with and without the presence of visibility-reducing glare. Except for the smallest, lowest-contrast tasks performed by the older workers, an illuminance of 10 lx resulted in visibility well above the threshold even in the presence of glare, and an illuminance of 30 lx resulted in suprathreshold visibility for these conditions as well. The results of these computational analyses were largely confirmed in a full-scale, outdoor field demonstration attended by transportation agency engineers and highway contractors. Together, the findings suggest that when lighting systems provide sufficient glare control, light levels do not always need to be especially high to ensure adequate visibility for workers.

  • 25. Bullough, J. D.
    et al.
    Radetsky, L. C.
    Besenecker, U. C.
    RPI.
    Rea, M. S.
    Influence of spectral power distribution on scene brightness at different light levels2014Inngår i: LEUKOS The Journal of the Illuminating Engineering Society of North America, ISSN 1550-2724, E-ISSN 1550-2716, Vol. 10, nr 1, s. 3-9Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Exterior lighting has multiple objectives. Brightness perception is a relevant parameter for outdoor lighting because it is correlated with perceptions of safety and security. Understanding the influence of the spectral characteristics of lighting to scene brightness perception is important in order to devise exterior lighting specifications that support perceptions of safety and security in exterior lighted environments, as well as to optimize light source technologies to account for these factors. A study of scene brightness perception under different light levels and spectral power distributions was conducted to assess whether scene brightness perception exhibited increased short-wavelength spectral sensitivity as a function of increasing light level. The results confirm that a successful model of spectral sensitivity for scene brightness perception should incorporate a shift in short-wavelength sensitivity like the one investigated in the present study.

  • 26.
    Burger, Birgitta
    et al.
    Finnish Centre of Excellence in Interdisciplinary Music Research, Department of Music, University of Jyväskylä.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Communication of Musical Expression by Means of Mobile Robot Gestures2010Inngår i: Journal on Multimodal User Interfaces, ISSN 1783-7677, E-ISSN 1783-8738, Vol. 3, nr 1, s. 109-118Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We developed a robotic system that can behave in an emotional way. A 3-wheeled simple robot with limited degrees of freedom was designed. Our goal was to make the robot displaying emotions in music performance by performing expressive movements. These movements have been compiled and programmed based on literature about emotion in music, musicians’ movements in expressive performances, and object shapes that convey different emotional intentions. The emotions happiness, anger, and sadness have been implemented in this way. General results from behavioral experiments show that emotional intentions can be synthesized, displayed and communicated by an artificial creature, also in constrained circumstances.

  • 27.
    Bäcklander, Gisela
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    To see or not to see: Importance of sensemaking in employee self-direction2019Inngår i: Nordic Journal of Working Life Studies, E-ISSN 2245-0157, Vol. 9, nr 2, s. 25-45Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Being self-directed is one of the most sought-after employee attributes. The present study examines managers’ approaches to and conceptualization of employee self-directedness through semi-structured interviews with 13 managers from five companies in the Stockholm area. Analysis suggests two different emphases in trying to increase self-direction, with differing underlying assumptions: an evaluation emphasis where self-direction is conceptualized as an inherent property of the individual, and a cultivation emphasis suggesting a more interactionist perspective of self-direction as an emergent behavior based on the interaction of individual and situational characteristics. Further, a “seeing work”-skill emerged in all interviews, implicating situational judgment and attention as core to what is ultimately seen as successful self-direction. Managers with a cultivation emphasis mentioned as viable tactics those focused on supporting sensemaking and thus enriching the working situation to enable better discretionary situational judgements.

    Fulltekst (pdf)
    Bäcklander 2019 To see or not to see_postprint
  • 28.
    Bäcklander, Gisela
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Management.
    Rosengren, Calle
    Kaulio, Matti
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Managing Intensity in Knowledge Work: Self-Leadership Practices among Danish Management ConsultantsInngår i: Journal of Management and Organization, ISSN 1833-3672, E-ISSN 1839-3527Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper examines the sources of knowledge workers’ work intensity and the self-leading strategies they apply to deal with it. The paper is based on focus group interviews with management consultants in a Danish management consultancy firm. Work intensity was identified as resulting from a combination of: (1) a results-only focus, (2) vagueness, (3) boundaryless work, and (4) low control of the quantitative load. A framework for self-leading strategies is developed based on the dimensions of reactive/proactive and self-focused/externally-focused strategies in different combinations. The results indicate that while consultants expressed a belief in internal self-discipline strategies of a more reactive nature, in fact, external and proactive strategies were the most effective in practice. In conclusion, the paper contributes to an extension of self-leadership theory to better account for current research on self-control.

    Fulltekst (pdf)
    Bäcklander Rosengren Kaulio Managing Intensity in Knowledge Work Self-Leadership Practices among Danish Management Consultants
  • 29.
    Bäcklander, Gisela
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Management.
    Rosengren, Calle
    Kaulio, Matti
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Managing Intensity in Knowledge Work: Self-Leadership Practices among Danish Management ConsultantsInngår i: Journal of Management and Organization, ISSN 1833-3672, E-ISSN 1839-3527Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper examines the sources of knowledge workers’ work intensity and the self-leading strategies they apply to deal with it. The paper is based on focus group interviews with management consultants in a Danish management consultancy firm. Work intensity was identified as resulting from a combination of: (1) a results-only focus, (2) vagueness, (3) boundaryless work, and (4) low control of the quantitative load. A framework for self-leading strategies is developed based on the dimensions of reactive/proactive and self-focused/externally-focused strategies in different combinations. The results indicate that while consultants expressed a belief in internal self-discipline strategies of a more reactive nature, in fact, external and proactive strategies were the most effective in practice. In conclusion, the paper contributes to an extension of self-leadership theory to better account for current research on self-control.

    Fulltekst (pdf)
    Bäcklander, Rosengren & Kaulio Managing Intensity in Knowledge Work Self-Leadership Practices among Danish Management Consultants JMO
  • 30.
    Bäcklander, Gisela
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Rosengren, Calle
    Lunds Universitet.
    Lid Falkman, Lena
    Handelshögskolan.
    Stenfors, Cecilia
    Karolinska Institutet.
    Seddigh, Aram
    Stressforskningsinstitutet.
    Osika, Walter
    Karolinska Institutet.
    Stenström, Emma
    Handelshögskolan.
    Navigating the Activity Based Working Environment – Relationships of Self-Leadership, Autonomy and Information Richness with Cognitive Stress and Performance2019Inngår i: Scandinavian Journal of Work and Organizational Psychology, E-ISSN 2002-2867Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In Activity Based Working Environment (ABWE) offices, employees are allowed increased autonomy and are expected to choose where, when, with whom, and to some degree with what, to work; in other words, employees are expected to self-lead to a higher degree and to coordinate and align with colleagues. Effects of these expectations on employees’ cognitive stress and performance are understudied. In the present study, Swedish ABWE workers (N = 416) are compared with workers in cell offices (N = 30) and landscape offices (N = 64), and relationships of self-leadership, information richness, and autonomy with cognitive stress and performance were examined using regression analysis. Results show no relationship between office type and outcomes. For cognitive stress, information richness had the largest negative relationship, followed by self-leadership: goal-setting and autonomy. For performance, self-leadership: goal-setting had the largest positive relationship, followed by information richness. This suggests that when organizational situations cannot be strongly structured – for example because the best work process is not known, or innovation or different collaboration constellations are needed – they need instead to be enriched so that employee orientation and coordination do not become too much of a burden on the individual employee, disrupting cognitive functioning and performance.

    Fulltekst (pdf)
    Bäcklander et al 2019 Navigating the Activity based working environment
  • 31. Camurri, A.
    et al.
    Bevilacqua, F.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Maestre, E.
    Penttinen, H.
    Seppänen, J.
    Välimäki, V.
    Volpe, G.
    Warusfel, O.
    Embodied music listening and making in context-aware mobile applications: the EU-ICT SAME Project2009Konferansepaper (Fagfellevurdert)
  • 32.
    Camurri, Antonio
    et al.
    University of Genova.
    Volpe, Gualtiero
    University of Genova.
    Vinet, Hugues
    IRCAM, Paris.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Fabiani, Marco
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Dubus, Gaël
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Maestre, Esteban
    Universitat Pompeu Fabra, Barcelona.
    Llop, Jordi
    Universitat Pompeu Fabra, Barcelona.
    Kleimola, Jari
    Oksanen, Sami
    Välimäki, Vesa
    Seppanen, Jarno
    User-centric context-aware mobile applications for embodied music listening2009Inngår i: User Centric Media / [ed] Akan, Ozgur; Bellavista, Paolo; Cao, Jiannong; Dressler, Falko; Ferrari, Domenico; Gerla, Mario; Kobayashi, Hisashi; Palazzo, Sergio; Sahni, Sartaj; Shen, Xuemin (Sherman); Stan, Mircea; Xiaohua, Jia; Zomaya, Albert; Coulson, Geoffrey; Daras, Petros; Ibarra, Oscar Mayora, Heidelberg: Springer Berlin , 2009, s. 21-30Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    This paper surveys a collection of sample applications for networked user-centric context-aware embodied music listening. The applications have been designed and developed in the framework of the EU-ICT Project SAME (www.sameproject.eu) and have been presented at Agora Festival (IRCAM, Paris, France) in June 2009. All of them address in different ways the concept of embodied, active listening to music, i.e., enabling listeners to interactively operate in real-time on the music content by means of their movements and gestures as captured by mobile devices. In the occasion of the Agora Festival the applications have also been evaluated by both expert and non-expert users

  • 33.
    Cao, Wei
    et al.
    South China Normal Univ, Ctr Opt & Electromagnet Res, South China Acad Adv Optoelect, Guangzhou, Guangdong, Peoples R China..
    Song, Wenxu
    South China Normal Univ, Ctr Opt & Electromagnet Res, South China Acad Adv Optoelect, Guangzhou, Guangdong, Peoples R China..
    Li, Xinge
    South China Normal Univ, Sch Psychol, Guangzhou, Guangdong, Peoples R China..
    Zheng, Sixiao
    Fudan Univ, Acad Engn & Technol, Shanghai, Peoples R China..
    Zhang, Ge
    Caihongqiao Children Rehabil & Serv Ctr Panyu Dis, Guangzhou, Guangdong, Peoples R China..
    Wu, Yanting
    South China Normal Univ, Sch Psychol, Guangzhou, Guangdong, Peoples R China..
    He, Sailing
    South China Normal Univ, Ctr Opt & Electromagnet Res, South China Acad Adv Optoelect, Guangzhou, Guangdong, Peoples R China..
    Zhu, Huilin
    Sun Yat Sen Univ, Child Dev & Behav Ctr, Affiliated Hosp 3, Guangzhou, Guangdong, Peoples R China..
    Chen, Jiajia
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Optical Network Laboratory (ON Lab).
    Interaction With Social Robots: Improving Gaze Toward Face but Not Necessarily Joint Attention in Children With Autism Spectrum Disorder2019Inngår i: Frontiers in Psychology, E-ISSN 1664-1078, Vol. 10, artikkel-id 1503Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    It is widely recognized that robot-based interventions for autism spectrum disorders (ASD) hold promise, but the question remains as to whether social humanoid robots could facilitate joint attention performance in children with ASD. In this study, responsive joint attention was measured under two conditions in which different agents, a human and a robot, initiated joint attention via video. The participants were 15 children with ASD (mean age: 4.96 +/- 1.10 years) and 15 typically developing (TD) children (mean age: 4.53 +/- 0.90 years). In addition to analyses of fixation time and gaze transitions, a longest common subsequence approach (LCS) was employed to compare participants' eye movements to a predefined logical reference sequence. The fixation of TD toward agent's face was earlier and longer than children with ASD. Moreover, TD showed a greater number of gaze transitions between agent's face and target, and higher LCS scores than children with ASD. Both groups showed more interests in the robot's face, but the robot induced a lower proportion of fixation time on the target. Meanwhile participants showed similar gaze transitions and LCS results in both conditions, suggesting that they could follow the logic of the joint attention task induced by the robot as well as human. We have discussed the implications for the effects and applications of social humanoid robots in joint attention interventions.

  • 34. Cassar, M.
    et al.
    Dabirian, Amir
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell Marknadsföring och Entreprenörskap.
    Diba, H.
    Konietzny, J.
    Self-Affirmation of Narcissists on Social Media: A Study Proposing a New Method of Categorization on Facebook Ads2018Inngår i: Back to the Future: Using Marketing Basics to Provide Customer Value / [ed] Nina Krey, Patricia Rossi, Springer Nature , 2018, s. 93-101Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    This paper explores the possibility of creating a new category of Facebook ads based on the personality of the user. The introduction of social media channels such as Facebook has provided a new platform for performing self-affirmation theory tests and related behavioral studies. This paper is based on the subsidiary hypothesis that while self-affirming themselves, Facebook users disclose information about their personality. A lexical analysis of each user’s Facebook posts can therefore be used for the purpose of profiling the user. The analysis and categorization of users’ posts based on their behavioral and personality traits can potentially assist marketers interested in targeted marketing to reach a specific audience through this powerful online channel. Hence, this study proposes an innovative method that measures narcissistic personality by analyzing a user’s Facebook posts. 

  • 35.
    Castellano, Ginevra
    et al.
    InfoMus Lab, DIST, University of Genova.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Camurri, Antonio
    InfoMus Lab, DIST, University of Genova.
    Volpe, Gualtiero
    InfoMus Lab, DIST, University of Genova.
    Expressive Control of Music and Visual Media by Full-Body Movement2007Inngår i: Proceedings of the 7th International Conference on New Interfaces for Musical Expression, NIME '07, New York, NY, USA: ACM Press, 2007, s. 390-391Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this paper we describe a system which allows users to use their full-body for controlling in real-time the generation of an expressive audio-visual feedback. The system extracts expressive motion features from the user’s full-body movements and gestures. The values of these motion features are mapped both onto acoustic parameters for the real-time expressive rendering ofa piece of music, and onto real-time generated visual feedback projected on a screen in front of the user.

  • 36. Castellano, Ginevra
    et al.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Camurri, Antonio
    Volpe, Gualtiero
    User-Centered Control of Audio and Visual Expressive Feedback by Full-Body Movements2007Inngår i: Affective Computing and Intelligent Interaction / [ed] Paiva, Ana; Prada, Rui; Picard, Rosalind W., Berlin / Heidelberg: Springer Berlin/Heidelberg, 2007, s. 501-510Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    In this paper we describe a system allowing users to express themselves through their full-body movement and gesture and to control in real-time the generation of an audio-visual feedback. The systems analyses in real-time the user’s full-body movement and gesture, extracts expressive motion features and maps the values of the expressive motion features onto real-time control of acoustic parameters for rendering a music performance. At the same time, a visual feedback generated in real-time is projected on a screen in front of the users with their coloured silhouette, depending on the emotion their movement communicates. Human movement analysis and visual feedback generation were done with the EyesWeb software platform and the music performance rendering with pDM. Evaluation tests were done with human participants to test the usability of the interface and the effectiveness of the design.

  • 37.
    Ceccato, Vania
    KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Centra, Centrum för bank och finans, Cefin.
    The nature of rape places2014Inngår i: Journal of Environmental Psychology, ISSN 0272-4944, E-ISSN 1522-9610, Vol. 40, s. 97-107Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The objective of this article is to characterise the distribution and the urban landscape in which outdoor rapes happen in Stockholm, the capital of Sweden. Geographical Information Systems (GIS) underlie the methodology of this research that combines crime police records, police protocols and information from fieldwork of a sample of rape places. Rapes are concentrated in the inner city areas but follow a patchy pattern in some parts of the periphery. Rapes happen in places with poor visibility but that offer an easy escape for the offender. A large share of them happen in the weekends, holidays and hot months of the year, which can be associated with unstructured leisure routine activities of individuals. Results show that the role of environment on the occurrence of rape varies over time and space - a fact with important implications for research and safety interventions.

  • 38. Chen, Chaona
    et al.
    Garrod, Oliver GB
    Zhan, Jiayu
    Beskow, Jonas
    Schyns, Philippe G
    Jack, Rachael E
    Reverse engineering psychologically valid facial expressions of emotion into social robots2018Inngår i: 2018 13th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2018), 2018, s. 448-452Konferansepaper (Fagfellevurdert)
  • 39. Chen, Chaona
    et al.
    Hensel, Laura B
    Duan, Yaocong
    Ince, Robin AA
    Garrod, Oliver GB
    Beskow, Jonas
    Jack, Rachael E
    Schyns, Philippe G
    Equipping social robots with culturally-sensitive facial expressions of emotion using data-driven methods2019Inngår i: 2019 14th IEEE International Conference on Automatic Face & Gesture Recognition (FG 2019), 2019, s. 1-8Konferansepaper (Fagfellevurdert)
  • 40.
    Dahlberg, Leif
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    Gardens of Justice2014Collection/Antologi (Fagfellevurdert)
  • 41.
    De Witt, Anna
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Sound design for affective interaction2007Inngår i: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics / [ed] Paiva, A; Prada, R; Picard, RW, 2007, Vol. 4738, s. 523-533Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Different design approaches contributed to what we see today as the prevalent design paradigm for Human Computer Interaction; though they have been mostly applied to the visual aspect of interaction. In this paper we presented a proposal for sound design strategies that can be used in applications involving affective interaction. For testing our approach we propose the sonification of the Affective Diary, a digital diary with focus on emotions, affects, and bodily experience of the user. We applied results from studies in music and emotion to sonic interaction design. This is one of the first attempts introducing different physics-based models for the real-time complete sonification of an interactive user interface in portable devices.

  • 42.
    Dellve, Lotta
    et al.
    KTH, Skolan för teknik och hälsa (STH), Ergonomi.
    Samuelsson, L.
    Waye, K. P.
    Preschool Children's Experience and Understanding of Their Soundscape2013Inngår i: Qualitative Research in Psychology, ISSN 1478-0887, E-ISSN 1478-0895, Vol. 10, nr 1, s. 1-13Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Noise may be a serious health problem in preschools. This article explores how preschool-aged children experience, understand, and cope with the soundscape at their preschools. Using a qualitative approach, 36 children (4-6 years old) were interviewed in 11 focus groups. The children related their experience of sound to the consequences the sound had for themselves, their understanding of its source, and their bodily and emotional experience of it. Their perceived trustfulness, comprehensibility, sound descriptions, and manageability of given sounds were interpreted in the model as an expression of uncontrollability. The degree of uncontrollability of sounds accounted for whether children were nondisturbed, disturbed, or distressed by their experience of it. Distressing noise was experienced as both physically and emotionally painful. The children handled such distress by flight, attempting to reduce the hearing sensation, turning to their teachers, and using cognitive strategies. It is important to increase our understanding of how children cope with distressing sounds at preschools.

  • 43.
    Eerola, Tuomas
    et al.
    Department of Music, University of Jyväskylä, Jyväskylä, Finland .
    Friberg, Anders
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Bresin, Roberto
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH.
    Emotional expression in music: Contribution, linearity, and additivity of primary musical cues2013Inngår i: Frontiers in Psychology, E-ISSN 1664-1078, Vol. 4, s. 487-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of this study is to manipulate musical cues systematically to determine the aspects of music that contribute to emotional expression, and whether these cues operate in additive or interactive fashion, and whether the cue levels can be characterized as linear or non-linear. An optimized factorial design was used with six primary musical cues (mode, tempo, dynamics, articulation, timbre, and register) across four different music examples. Listeners rated 200 musical examples according to four perceived emotional characters (happy, sad, peaceful, and scary). The results exhibited robust effects for all cues and the ranked importance of these was established by multiple regression. The most important cue was mode followed by tempo, register, dynamics, articulation, and timbre, although the ranking varied across the emotions. The second main result suggested that most cue levels contributed to the emotions in a linear fashion, explaining 77-89% of variance in ratings. Quadratic encoding of cues did lead to minor but significant increases of the models (0-8%). Finally, the interactions between the cues were non-existent suggesting that the cues operate mostly in an additive fashion, corroborating recent findings on emotional expression in music.

  • 44.
    Ekström, Axel G.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Intelligenta system, Tal, musik och hörsel, TMH.
    Predicting linguistic universality through reverse engineering2023Inngår i: Nature Reviews Psychology, E-ISSN 2731-0574, Vol. 2, nr 10, s. 587-Artikkel i tidsskrift (Fagfellevurdert)
  • 45.
    Ekström, Axel G.
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Intelligenta system, Tal, musik och hörsel, TMH. Lund University Cognitive Science, Lund, Sweden, Department of Psychology, Lund University, Lund, Sweden.
    Niehorster, D. C.
    Olsson, E. J.
    Self-imposed filter bubbles: Selective attention and exposure in online search2022Inngår i: Computers in Human Behavior Reports, ISSN 2451-9588, Vol. 7, artikkel-id 100226Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    It is commonly assumed that algorithmic curation of search results creates filter bubbles, where users’ beliefs are continually reinforced and opposing views are suppressed. However, empirical evidence has failed to support this hypothesis. Instead, it has been suggested that filter bubbles may result from individuals engaging selectively with information in search engine results pages. However, this “self-imposed filter bubble hypothesis” has remained empirically untested. In this study, we find support for the hypothesis using eye-tracking technology and link selection data. We presented partisan participants (n = 48) with sets of simulated Google Search results, controlling for the ideological leaning of each link. Participants spent more time viewing own-side links than other links (p = .037). In our sample, participants who identified as right-wing exhibited a greater such bias than those that identified as left wing (p < .001). In addition, we found that both liberals and conservatives tended to select own-side links (p < .001). Finally, there was a significant effect of trust, such that links associated with less trusted sources were attended less and selected less often by liberals and conservatives alike (p < .001). Our study challenges the efficacy of policies that aim at combatting filter bubbles by presenting users with an ideologically diverse set of search results. 

  • 46.
    Elmers, Mikey
    et al.
    Saarland University, Germany.
    O'Mahony, Johannah
    University of Edinburgh, United Kingdom.
    Székely, Éva
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Intelligenta system, Tal, musik och hörsel, TMH.
    Synthesis after a couple PINTs: Investigating the Role of Pause-Internal Phonetic Particles in Speech Synthesis and Perception2023Inngår i: Interspeech 2023, International Speech Communication Association , 2023, s. 4843-4847Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Pause-internal phonetic particles (PINTs), such as breath noises, tongue clicks and hesitations, play an important role in speech perception but are rarely modeled in speech synthesis. We developed two text-to-speech (TTS) systems: one with and one without PINTs labels in the training data. Both models produced fewer PINTs and had a lower total PINTs duration than natural speech. The labeled model generated more PINTs and longer total PINTs durations than the model without labels. In a listening experiment based on the labeled model we evaluated the influence of various PINTs combinations on the perception of speaker certainty. We tested a condition without PINTs material and three conditions that included PINTs. The condition without PINTs was perceived as significantly more certain than the PINTs conditions, suggesting that we can modify how certain TTS is perceived by including PINTs.

  • 47.
    Elvnäs, Simon
    et al.
    KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Medicinteknik och hälsosystem, Ergonomi.
    Håkansson, Malin
    KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Medicinteknik och hälsosystem, Ergonomi.
    Carter, Ned
    SALAR.
    How to Use OBM Successfully With Leaders in the Context of Work Analysis2019Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Transforming behavior science into applications that can be useful to real leaders is challenging. There are difficulities in identifying and recording leadership behaviors in field settings, and in describing and measuring changes in dynamic real-life situations . This seminar will present experiences of using OBM and Komaki´s taxonomy of operant leadership (OSTI) in a broader context of work analysis, a context that OBM needs and one that leaders can understand. This is accomplished without abandoning the strategies and tactics of behavioral science that are the hallmarks of OBM. Examples from an eight-year project including 3000 video observations of more than 500 leaders from multiple settings in several different branches of business, in combination with data from time allocation studies for leaders, will be presented. The summary of the results will be shown to contribute to the understanding of OBM in a system perspective. The findings have implications for the design of OBM-oriented leadership interventions.

  • 48.
    Enmarker, Ingela
    KTH, Tidigare Institutioner (före 2005), Byggvetenskap.
    The effects of meaningful irrelevant speech and road traffic noise on teachers' attention, episodic and semantic memory2004Inngår i: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 45, nr 5, s. 393-405Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The aim of the present experiment was to examine the effects of meaningful irrelevant speech and road traffic noise on attention, episodic and semantic memory, and also to examine whether the noise effects were age-dependent. A total of 96 male and female teachers in the age range of 35-45 and 55-65 years were randomly assigned to a silent or the two noise conditions. Noise effects found in episodic memory were limited to a meaningful text, where cued recall contrary to expectations was equally impaired by the two types of noise. However, meaningful irrelevant speech also deteriorated recognition of the text, whereas road traffic noise caused no decrement. Retrieval from two word fluency tests in semantic memory showed strong effects of noise exposure, one affected by meaningful irrelevant speech and the other by road traffic noise. The results implied that both acoustic variation and the semantic interference could be of importance for noise impairments. The expected age-dependent noise effects did not show up.

  • 49.
    Enmarker, Ingela
    et al.
    KTH.
    Boman, Eva
    KTH.
    Hygge, Staffan
    Structural equation models of memory performance across noise conditions and age groups2006Inngår i: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 47, nr 6, s. 449-460Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Competing models of declarative memory were tested with structural equation models to analyze whether a second-order latent variable structure for episodic and semantic memory was invariant across age groups and across noise exposure conditions. Data were taken from three previous experimental noise studies that were performed with the same design, procedure, and dependent measures, and with participants from four age groups (13-14, 18-20, 35-45, and 55-65 years). Two noise conditions, road traffic noise and meaningful irrelevant speech, were compared to a quiet control group. The structural models put to the test were taken from Nyberg et al. (2003), which employed several memory tests that were the same as ours and studied age-groups that partly overlapped with our groups. In addition we also varied noise exposure conditions. Our analyses replicated and supported the second-order semantic-episodic memory models in Nyberg et al. (2003). The latent variable structures were invariant across age groups, with the exception of our youngest group, which by itself showed a less clear latent structure. The obtained structures were also invariant across noise exposure conditions. We also noted that our text memory items, which did not have a counterpart in the study by Nyberg et al. (2003), tend to form a separate latent variable loading on episodic memory.

  • 50.
    Enoksson, Fredrik
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Lärande.
    Hrastinski, Stefan
    KTH, Skolan för industriell teknik och management (ITM), Lärande.
    A qualitative study of adolescents’ use and perception of Internet-delivered CBT: The case of Social Anxiety Disorder2018Konferansepaper (Fagfellevurdert)
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