Searched for: subject%3A%22Task%255C%2BPerformance%255C%2Band%255C%2BAnalysis%22
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Daanen, H.A.M. (author), van Ling, S. (author), Tan, T.K. (author)
Background: It has been shown that endurance performance after one night of sleep deprivation is not compromised despite the feeling of fatigue and that, in contrast, performance in the heat deteriorates even though people may feel good. However, it is essentially unknown how the estimation of performance capabilities relate to actual...
article 2013
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Berger, M.A.M. (author), Krul, A. (author), Daanen, H.A.M. (author), TNO Defensie en Veiligheid (author)
Finger dexterity tests are generally used to assess performance decrease due to gloves, cold and pathology. It is generally assumed that the O’Connor and Purdue Pegboard test yield similar results. In this experiment we compared these two tests for dry conditions without gloves, and for dry and wet conditions with two types of Nytril gloves. In...
article 2009
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de Looze, M.P. (author), Bosch, T. (author), van Dieën, J. (author), TNO Kwaliteit van Leven (author)
Shoulder fatigue has been suggested to be a useful risk indicator for shoulder disorders in repetitive, low-force work tasks. In contrast to high-force or purely isometric tasks, it is unclear whether measurable fatigue develops in realistic low-force work. The question addressed in this review was: 'Is there evidence of objective signs of...
article 2009
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van der Burg, E. (author), Olivers, C.N.L. (author), Bronkhorst, A.W. (author), Theeuwes, J. (author), TNO Defensie en Veiligheid (author)
The majority of studies investigating interactions between vision and touch have typically explored single events, presenting one object at a time. The present study investigates how tactile-visual interactions affect competition between multiple visual objects in more dynamic cluttered environments. Participants searched for a horizontal or...
article 2009
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Toet, A. (author), Jansen, S.E.M. (author), Delleman, N.J. (author), TNO Defensie en Veiligheid (author), Nato (author)
Field-of-view (FOV) restrictions are known to affect human behaviour and to degrade performance for a range of different tasks. However, the relationship between human locomotion performance in complex environments and FOV size is currently not fully known. This paper examined the effects of FOV restrictions on the performance of participants...
article 2008
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Faber, G.S. (author), Kingma, I. (author), Delleman, N. (author), van Dieën, J. (author)
This study investigated the effects of ship motion on peak spinal loading during lifting. All measurements were done on a ship at sea. In 1-min trials, which were repeated over a wide range of sailing conditions, subjects lifted an 18 kg box five times. Ship motion, whole body kinematics, ground reaction forces and electromyography were measured...
article 2008
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Kerstholt, J.H. (author), Paashuis, R. (author), Sjerps, M. (author), TNO Defensie en Veiligheid (author)
As trace evidence is becoming more and more important in legal cases it has to be ascertained that accurate judgments are made. In the present study we investigated how expectations and complexity affect shoe print examinations and to what extent differences exist between beginners and experienced examiners. Twelve examiners assessed similarity...
article 2007
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Toet, A. (author), Jansen, S.E.M. (author), Delleman, N.J. (author), TNO Defensie en Veiligheid (author)
Effects of field-of-view restrictions on the speed and accuracy of participants performing a real-world manoeuvring task through an obstacled environment were investigated. Although field-of-view restrictions are known to affect human behaviour and to degrade performance for a range of different tasks, the relationship between human manoeuvring...
article 2007
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Kuijt-Evers, L.F.M. (author), Bosch, T. (author), Huysmans, M.A. (author), de Looze, M.P. (author), Vink, P. (author), TNO Kwaliteit van Leven (author)
In the current study, the relationship between objective measurements and subjective experienced comfort and discomfort in using handsaws was examined. Twelve carpenters evaluated five different handsaws. Objective measures of contact pressure (average pressure, pressure area and pressure-time (P-t) integral) in static and dynamic conditions,...
article 2007
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van Dorp, E. (author), Los, M. (author), Dirven, P. (author), Sarton, E. (author), Valk, P. (author), Teppema, L. (author), Stienstra, R. (author), Dahan, A. (author), TNO Defensie en Veiligheid (author)
Introduction: Exposure to a hypoxic environment has a deleterious effect on physiological and mental functions. We studied the effect of added inspired CO2 during artificially induced hypoxic normobaric hypoxia (oxygen saturation ∼80%) on complex task performance. Methods: In random order, 22 healthy volunteers were exposed to 3 gas mixtures for...
article 2007
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Huysmans, M.A. (author), de Looze, M.P. (author), Hoozemans, M.J.M. (author), van der Beek, A.J. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
The study was designed to determine the effect of joystick handle size and (display-control) gain at two levels of required task precision on performance and physical load on crane operators. Eight experienced crane operators performed a simulated crane operation task on a computer by use of a joystick with either a short or a large handle. The...
article 2006
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de Korte, E.M. (author), van Lingen, P. (author), TNO Kwaliteit van Leven (author)
A comparative, experimental study with repeated measures has been conducted to evaluate the effect of the use of speech recognition on working postures, productivity and the perception of user friendliness. Fifteen subjects performed a standardised task, first with keyboard and mouse and, after a six week training period, with speech recognition...
article 2006
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Lenior, D. (author), Janssen, W.H. (author), Neerincx, M.A. (author), Schreibers, K. (author), TNO Defensie en Veiligheid TNO Kwaliteit van Leven (author)
The theme Smart Transport can be described as adequate human-system symbiosis to realize effective, efficient and human-friendly transport of goods and information. This paper addresses how to attune automation to human (cognitive) capacities (e.g. to take care of information uncertainty, operator trust and mutual man-machine adaptations). An...
article 2006
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Hoozemans, M.J.M. (author), de Looze, M.P. (author), Kingma, I. (author), Reijneveld, K.C.N. (author), de Korte, E.M. (author), van der Grinten, M.P. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners of short and tall stature participated in this...
article 2005
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van Wendel de Joode, B. (author), van Hemmen, J.J. (author), Meijster, T. (author), Major, V. (author), London, L. (author), Kromhout, H. (author), TNO Kwaliteit van Leven (author)
Valid and reliable semi-quantitative dermal exposure assessment methods for epidemiological research and for occupational hygiene practice, applicable for different chemical agents, are practically nonexistent. The aim of this study was to assess the reliability of a recently developed semi-quantitative dermal exposure assessment method (DREAM)...
article 2005
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Visser, B. (author), de Looze, M.P. (author), de Graaff, M.P. (author), van Dieën, J.H. (author)
The objective of the present study was to gain insight into the effects of precision demands and mental pressure on the load of the upper extremity. Two computer mouse tasks were used: an aiming and a tracking task. Upper extremity loading was operationalized as the myo-electric activity of the wrist flexor and extensor and of the trapezius...
article 2004
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Beckers, D.G.J. (author), van der Linden, D. (author), Smulders, P.G.W. (author), Kompier, M.A.J. (author), van Veldhoven, M.J.P.M. (author), van Yperen, N.W. (author), TNO Arbeid (author)
Objectives: We sought to better understand the relationship between overtime and mental fatigue by taking into account work motivation and the quality of overtime work and studying theoretically derived subgroups. Methods: We conducted a survey-study among a representative sample of the Dutch full-time workforce (n = 1807). The prevalence of...
article 2004
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Heinrich, J. (author), Blatter, B.M. (author), Bongers, P.M. (author)
Aim: To compare two different methods for assessment of postural load and duration of computer use in office workers. Methods: The study population existed of 87 computer workers. Questionnaire data about exposure were compared with exposures measured by a standardised or objective method. Measuring true exposure to postural load consisted of an...
article 2004
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van Erp, J.B.F. (author), Verschoor, M.H. (author), TNO Technische Menskunde (author)
The present study investigates tracking performance with tactile and/or visual presentation of target and cursor. The tactile display consisted of vibrators in a horizontal linear array on the torso, the visual display consisted of dots projected on a horizontal plane surrounding the observer. Both displays presented qualitatively identical...
article 2004
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Groenesteijn, L. (author), Eikhout, S.M. (author), Vink, P. (author), TNO Arbeid (author)
In installation work, the physical workload is high. Awkward postures, heavy lifting and repetitive movements are often seen. To improve aspects of the work situation, frequently used pliers were redesigned to make them suitable for more cutting tasks. In this study these multitask pliers are evaluated in comparison to the originally used pliers...
article 2004
Searched for: subject%3A%22Task%255C%2BPerformance%255C%2Band%255C%2BAnalysis%22
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