Searched for: author:"De Ridder, H."
(1 - 20 of 45)

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Vegt, N.J.H. (author), Visch, V.T. (author), Vermeeren, A.P.O.S. (author), de Ridder, H. (author)
In this article, we aim to provide insights into the design and implementation of game elements for teamwork on the work floor and to study their effect. Inventing games to break monotonous jobs is a long-standing practice, yet conscious implementation of motivational elements of games at work is a recent phenomenon. Generally, gamification is...
journal article 2018
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Zhang, F. (author), de Ridder, H. (author), Pont, S.C. (author)
To better understand the interactions between material perception and light perception, we further developed our material probe MatMix 1.0 into MixIM 1.0, which allows optical mixing of canonical lighting modes. We selected three canonical lighting modes (ambient, focus, and brilliance) and created scenes to represent the three illuminations....
journal article 2018
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Kartashova, T. (author), de Ridder, H. (author), te Pas, S.F. (author), Pont, S.C. (author)
In this article, we studied perception of a particular case of light fields that is characterized by a difference in its consistent structure between parts of a scene. In architectural lighting design, such a consistent structure in a part of a light field is called a light zone. First, we explored whether human observers are sensitive to...
journal article 2018
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Dekkers, T. (author), Melles, M. (author), Groeneveld, B.S. (author), de Ridder, H. (author)
Background: Patients with orthopedic conditions frequently use the internet to find health information. Patient education that is distributed online may form an easily accessible, time- and cost-effective alternative to education delivered through traditional channels such as one-on-one consultations or booklets. However, no systematic...
review 2018
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Zhang, F. (author), de Ridder, H. (author), Barla, Pascal (author), Pont, S.C. (author)
conference paper 2017
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Jansen, R.J. (author), van Egmond, R. (author), de Ridder, H. (author)
The role of task prioritization in performance tradeoffs during multi-tasking has received widespread attention. However, little is known on whether people have preferences regarding tasks, and if so, whether these preferences conflict with priority instructions. Three experiments were conducted with a high-speed driving game and an auditory...
journal article 2016
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Vegt, N.J.H. (author), Visch, V.T. (author), Vermeeren, A.P.O.S. (author), de Ridder, H. (author)
Serious gaming is used as a means for improving organizational teamwork, yet little is known about the effect of individual game elements constituting serious games. This paper presents a game design experiment aimed at generating knowledge on designing game elements for teamwork. In previous work, we suggested that interaction- and goal-driven...
journal article 2016
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Zhang, F. (author), de Ridder, H. (author), Fleming, Ronald W. (author), Pont, S.C. (author)
MatMix 1.0 is a novel material probe we developed for quantitatively measuring visual perception of materials. We implemented optical mixing of four canonical scattering modes, represented by photographs, as the basis of the probe. In order to account for a wide range of materials, velvety and glittery (asperity and mesofacet scattering) were...
journal article 2016
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Kartashova, T. (author), Sekulovski, D (author), de Ridder, H. (author), te Pas, SF (author), Pont, S.C. (author)
Human observers have been demonstrated to be sensitive to the local (physical) light field, or more
precisely, to the primary direction, intensity, and diffuseness of the light at a point in a space. In the
present study we focused on the question of whether it is possible to reconstruct the global visual light field, based on observers’...
journal article 2016
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Li, J. (author), Vermeeren, A.P.O.S. (author), De Ridder, H. (author)
In this article, we present examples of using designerly ways to explore “crowd” phenomenon in a cross-disciplinary project named EWiDS. The phrase ‘designerly ways’ refers to visual communication methods such as drawings and videos, which are widely acknowledged as effective approaches to crossdisciplinary collaboration. This study started with...
journal article 2014
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Van Egmond, R. (author), De Ridder, H. (author), Pappas, T.N. (author), Silva, P.M. (author)
We investigate the effect of contrast enhancement on the subjective roughness of visual textures. Our analysis is based on subjective experiments with seventeen images from the CUReT database in three variants: original, synthesized textures, and contrast-enhanced synthesized textures. In Experiment 1, participants were asked to adjust the...
conference paper 2014
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Wijntjes, M.W.A. (author), De Ridder, H. (author)
Whereas the 17th century painter Canaletto was a master in linear perspective of the architectural elements, he seems to have had considerable difficulty with linear perspective of shadows. A common trick to avoid shadow perspective problems is to set the (solar) illumination direction parallel to the projection screen. We investigated in one...
conference paper 2014
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Li, J. (author), de Ridder, H. (author), Vermeeren, A.P.O.S. (author), Conrado, C. (author), Martella, C. (author)
This paper introduces the concept of crowd well-being and the needs for sustaining it. Crowd well-being can be interpreted as crowd members’ evaluations on their emotional reactions, moods and judgments they form about their satisfactions, goals or needs fulfillment in a crowded situation according to the definition of subjective well-being by...
conference paper 2013
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Li, J. (author), Erkin, Z. (author), De Ridder, H. (author), Vermeeren, A.P.O.S. (author)
Crowd experience is inevitable in daily life. Crowd managers need tools to accurately estimate the psychological aspects of crowds, an important one being crowd emotion. In this study, we explore the feasibility of obtaining a real-time, dynamic map of crowd emotions through self-reporting by crowd members. To this end, a smart phone application...
conference paper 2013
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Jansen, R.J. (author), Van Egmond, R. (author), De Ridder, H. (author), Silvester, S. (author)
Operational police work can be characterized by the continuous switching between surveillance, responding to incidents, and office activities. Transitions between these activities are initiated by radio contact, messages on a mobile data terminal, or personal observations. The “information environment” emerging from these channels may cause...
conference paper 2013
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Li, J. (author), De Ridder, H. (author), Vermeeren, A.P.O.S. (author), Conrado, C. (author), Martella, C. (author)
This paper investigates the needs or criteria for sustaining well-being in crowded situations through two focus group discussions with a total of ten participants. We conclude that pursuing crowd well-being could be divided into two different cases: one is obtaining the enhancement of the current state in normal situations, and the other is...
conference paper 2013
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Melles, M. (author), Freudenthal, A. (author), De Ridder, H. (author)
Medical staff should not only possess excellent clinical skills, but also be proficient in non-clinical, or non-technical, skills. These skills play an important role in, for example, teamwork, task management and coping. Our research investigates how product design can help support medical staff in their day-to-day non-clinical tasks. In the...
journal article 2013
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Nefs, H.T. (author), Van Bilsen, A. (author), Pont, S.C. (author), De Ridder, H. (author), Wijntjes, M.W.A. (author), Van Doorn, A.J. (author)
In this paper, we focus on how people perceive the aspect ratio of city squares. Earlier research has focused on distance perception but not so much on the perceived aspect ratio of the surrounding space. Furthermore, those studies have focused on “open” spaces rather than urban areas enclosed by walls, houses and filled with people, cars, etc....
journal article 2013
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Leendertse, W. (author), Arts, J. (author), De Ridder, H. (author)
The core business of governmental organizations like Rijkswaterstaat in the Netherlands is the optimal management of road-end waterway networks. The coming years many maintenance, renewal and extension projects will be executed in these networks. Projects give a disturbance in functionality of the network. Network management is to keep this...
journal article 2012
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Jansen, R.J. (author), Van Egmond, R. (author), De Ridder, H. (author)
The use of sound was explored as means for expressing perceptual attributes of visual textures. Two sets of 17 visual textures were prepared: one set taken from the CUReT database1, and one set synthesized to replicate the former set. Participants were instructed to match a sound texture with a visual texture displayed onscreen. A modified...
book chapter 2012
Searched for: author:"De Ridder, H."
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