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  • 1.
    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)
  • 2.
    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), 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, ISSN 1664-1078, 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.

  • 3. Inden, Benjamin
    et al.
    Malisz, Zofia
    Wagner, Petra
    Wachsmuth, Ipke
    Rapid entrainment to spontaneous speech: A comparison of oscillator models2012Inngår i: Proceedings of the 34th Annual Conference of the Cognitive Science Society, 2012, s. 1721-1726Konferansepaper (Fagfellevurdert)
  • 4.
    Lilford, Neil
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Vigar-Ellis, Debbie
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Industriell marknadsföring. University of KwaZulu-Natal, South Africa .
    Nel, Deon
    University of Pretoria, South Africa.
    Big Five personality traits and financial salesperson performance: An application of Chernoff faces2014Inngår i: Journal of Financial Services Marketing, ISSN 1363-0539, E-ISSN 1479-1846, Vol. 19, nr 2, s. 146-154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Identifying the personality traits of effective sales people has been a long-standing challenge to sales managers and researchers in a wide range of contexts, from business to business, to retail and services. A definitive identification of the characteristics of the ideal salesperson remains elusive. We investigate the impact of the Big 5 personality traits on the performance of salespersons in a large financial services organization, our purpose being to graphically illustrate how personality traits differ, according to different levels of sales performance. We present the results graphically using Chernoff faces. The study demonstrates that this approach provides valuable insights to sales managers, and has several possible applications in relation to financial salesperson-performance management.

  • 5. Nazneen, N.
    et al.
    Rozga, Agata
    Romero, Mario
    Georgia Institute of Technology, USA.
    Findley, Addie J.
    Call, Nathan A.
    Abowd, Gregory D.
    Arriaga, Rosa I.
    Supporting Parents for In-home Capture of Problem Behaviors of Children with Developmental Disabilities2012Inngår i: Personal and Ubiquitous Computing, ISSN 1617-4909, E-ISSN 1617-4917, Vol. 16, nr 2, s. 193-207Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Ubiquitous computing has shown promise in applications for health care in the home. In this paper, we focus on a study of how a particular ubicomp capability, selective archiving, can be used to support behavioral health research and practice. Selective archiving technology, which allows the capture of a window of data prior to and after an event, can enable parents of children with autism and related disabilities to record video clips of events leading up to and following an instance of problem behavior. Behavior analysts later view these video clips to perform a functional assessment. In contrast to the current practice of direct observation, a powerful method to gather data about child problem behaviors but costly in terms of human resources and liable to alter behavior in the subjects, selective archiving is cost effective and has the potential to provide rich data with minimal instructions to the natural environment. To assess the effectiveness of parent data collection through selective archiving in the home, we developed a research tool, CRAFT (Continuous Recording And Flagging Technology) and conducted a study by installing CRAFT in eight households of children with developmental disabilities and severe behavior concerns. The results of this study show the promise and remaining challenges for this technology. We have also shown that careful attention to the design of a ubicomp system for use by other domain specialists or non-technical users is key to moving ubicomp research forward.

  • 6.
    Pargman, Daniel
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    On the limits of limits2015Inngår i: First Monday, ISSN 1396-0466, E-ISSN 1396-0466, Vol. 20, nr 8, s. 1-1Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This discussion paper outlines the connection between the perceived urgency of environmental and resource challenges that humanity is facing during the twenty-first century and the individual researcher's response within the emerging "Computing within Limits" community. What is the relationship between our beliefs as individuals and as researchers and the specific issues we chose to study? Furthermore, is there a relationship between skills and topics we happen to be expert in and the subsequent future scenarios we plan for and deem to be more likely to happen?.

  • 7.
    Skedung, Lisa
    KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
    Tactile Perception: Role of Friction and Texture2012Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Tactile perception is considered an important contributor to the overall consumer experience of a product. However, what physical properties that create the specifics of tactile perception, are still not completely understood. This thesis has researched how many dimensions that are required to differentiate the surfaces perceptually, and then tried to explain these dimensions in terms of physical properties, by interconnecting human perception measurements with various physical measurements. The tactile perception was assessed by multidimensional scaling or magnitude estimation, in which methods human participants assign numbers to how similar pairs of surfaces are perceived or to the relative quantity of a specified perceptual attribute, such as softness, smoothness, coarseness and coolness. The role of friction and surface texture in tactile perception was investigated in particular detail, because typically tactile exploration involves moving (at least) one finger over a textured surface. A tactile approach for measuring friction was developed by means of moving a finger over the surfaces, mounted on a force sensor. The contribution of finger friction to tactile perception was investigated for surfaces of printing papers and tissue papers, as well as for model surfaces with controlled topography. The overarching research goal of this thesis was to study, systematically, the role of texture in tactile perception of surfaces.

    The model surfaces displayed a sinusoidal texture with a characteristic wavelength and amplitude, fabricated by surface wrinkling and replica molding techniques. A library of surfaces was manufactured, ranging in wavelengths from 270 nm up to 100 µm and in amplitudes from 7 nm up to 6 µm. These surfaces were rigid and cleanable and could therefore be reused among the participants. To my knowledge, this is the first time in a psychophysical experiment, that the surface texture has been controlled over several orders of magnitude in length scale, without simultaneously changing other material properties of the stimuli.

    The finger friction coefficient was found to decrease with increasing aspect ratio (amplitude/wavelength) of the model surfaces and also with increasing average surface roughness of the printing papers. Analytical modeling of the finger’s interaction with the model surfaces shows how the friction coefficient increases with the real contact area, and that the friction mechanism is the same on both the nanoscale and microscale. The same interaction mechanism also explains the friction characteristics of tissue paper. Furthermore, it was found that the perceptions of smoothness, coarseness, coolness and dryness are satisfactorily related to the real contact area at the finger-surface interface. 

    It is shown that it is possible to discern perceptually among both printing papers and tissue papers, and this differentiation is based on either two or three underlying dimensions. Rough/smooth and thin/thick were the two main dimensions of surface feel found for the printing papers, whereas friction and wavelength were strongly related to the perceptual cues employed in scaling the model surfaces. These experimental results support the duplex theory of texture perception, which holds that both a “spatial sense”; used to discriminate the roughest textures from the others, and a “vibration sense”; used to discriminate among the smoother textures, are involved. The perception of what is considered rough and smooth depends on the experimental stimulus context. It is concluded that friction is important for human differentiation of surface textures below about 10 µm in surface roughness, and for larger surface textures, friction is less important or can even be neglected.

    The finger friction experiments also allowed the following conclusions to be drawn: (i) The interindividual variation in friction coefficients is too large to allow direct comparison; however, the trends in relative friction coefficients for a group of participants are the same. (ii) Lipids are transferred to the test surface of study, and this lowers the friction. (iii) Many of the studies point to a characteristic frequency during sliding of about 30 Hz, which is both characteristic of the resonance frequency of skin and the expected frequency associated with the fingerprints. (iv) The applied load in surface interrogation is in fact regulated in response to the friction force.

    The limits in tactile perception were indirectly researched by similarity scaling experiments on the model surfaces. Wrinkle wavelengths of 760 nm and 870 nm could be discriminated from untextured reference surfaces, whereas 270 nm could not. The amplitude of the wrinkles so discriminated was approximately 10 nm, suggesting that nanotechnology may well have a role to play in haptics and tactile perception.

  • 8.
    Skedung, Lisa
    et al.
    KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
    Arvidsson, Martin
    Department of Psychology, Stockholm University.
    Young, Jun Chung
    Polymers Division, National Institute of Standards and Technology.
    Stafford, Christopher M.
    Polymers Division, National Institute of Standards and Technology.
    Berglund, Birgitta
    Department of Psychology, Stockholm University.
    Rutland, Mark
    KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
    Feeling small: Exploring the Tactile Perception Limits2013Inngår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 3, s. 2617-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The human finger is exquisitely sensitive in perceiving different materials, but the question remains as to what length scales are capable of being distinguished in active touch. We combine material science with psychophysics to manufacture and haptically explore a series of topographically patterned surfaces of controlled wavelength, but identical chemistry. Strain-induced surface wrinkling and subsequent templating produced 16 surfaces with wrinkle wavelengths ranging from 300 nm to 90 mu m and amplitudes between 7 nm and 4.5 mu m. Perceived similarities of these surfaces (and two blanks) were pairwise scaled by participants, and interdistances among all stimuli were determined by individual differences scaling (INDSCAL). The tactile space thus generated and its two perceptual dimensions were directly linked to surface physical properties - the finger friction coefficient and the wrinkle wavelength. Finally, the lowest amplitude of the wrinkles so distinguished was approximately 10 nm, demonstrating that human tactile discrimination extends to the nanoscale.

  • 9.
    Trnka, Jiri
    et al.
    Totalförsvarets forskningsinstitut (FOI).
    Persson, Mats
    National Defence Collage.
    Hörling, Pontus
    Totalförsvarets forskningsinstitut (FOI).
    Nählinder, Staffan
    Totalförsvarets forskningsinstitut (FOI).
    Artman, Henrik
    Totalförsvarets forskningsinstitut (FOI).
    Framtida ledningscentraler: delrapport 1, omvärldsanalys2011Rapport (Annet vitenskapelig)
    Abstract [sv]

    Denna rapport är en omvärldsanalys av forskning kring ledningscentraler. Syftetmed rapporten är att kartlägga och analysera vetenskapliga bidrag inom områdetpublicerade under åren 2005-2011. Rapporten sammanställer information om deviktigaste tidskriftsartiklarna inom området som fokuserar på ledningscentraler istort; såväl militära ledningscentraler, krishantering, trafikledning för flyg ochjärnväg, samt processkontroll (såsom kärnkraftverk). Rapporten beaktar ävenartiklar inom de olika forskningsområden som är särskilt centrala förledningscentraler, exempelvis situationsmedvetenhet, teamarbete, distribueratbeslutsfattande, datorstött arbete, informationsfusion och ledningsstödsystem.Rapporten sammanfattar den allmänna utvecklingen inom området, samtidentifierar aktuella trender inom forskningen. Rapporten innehåller även ensammanställning av sammanfattningar (abstracts) av de refereradetidskriftsartiklarna.

  • 10. van Besouw, R. M.
    et al.
    Howard, D. M.
    Ternström, Sten
    KTH, Skolan för datavetenskap och kommunikation (CSC), Tal, musik och hörsel, TMH, Musikakustik.
    Towards an understanding of speech and song perception2005Inngår i: Logopedics, Phoniatrics, Vocology, ISSN 1401-5439, E-ISSN 1651-2022, Vol. 30, nr 3-4, s. 129-135Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The human singing voice plays an important role in music of all societies. It is an extremely flexible instrument and is capable of producing a tremendous range of sounds. As such, the human voice can be hard to classify and poses a major challenge for automatic audio discrimination and classification systems. Speech/song discrimination is an implicit goal of speech/music discrimination, where a division is sought between speech and song, such that the singing voice can be grouped together with other musical instruments in the same category. However, the division between speech and song is unclear and even human attempts at speech/song discrimination can be highly subjective and open to discussion. In this paper we present the results of a test that was designed to investigate differences in auditory perception for speech and song. Twenty-four subjects were instructed to attend to either the words or pitch, or both words and pitch of context-free spoken and sung phrases. After presentation of each phrase, subjects were asked to either type the words that they recalled, or select the correct pitch contour from a choice of four graphical representations, or do both, depending on the task specified before presentation of the phrase. The results of the experiment show a decrease in the amount of linguistic information retained by subjects for sung phrases and also a decrease in accuracy of response for the sung phrases when subjects attended to both words and pitch instead of words or pitch alone.

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