Jerzy Grobelny

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This study investigated usability of graphical icons in the design of human–computer interfaces. A simple additive model of icon acquisition time, including terms for Index of Difficulty, mode of icon array, and log2 (number of icons) explained 95% of the variance in mean times covering all 36 conditions over 4 laboratory experiments conducted in the study.(More)
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The main objective of this paper was to investigate the effects of a computer screen interface design and its related geometrical characteristics of 36 graphical objects on a user’s task efficiency. A total of 490 subjects took part in laboratory experiments that focused on the direct manipulation of a visual dialogue between a user and a computer. The(More)
In this paper, results of experimental research on the preattentive mechanism in the human–computer interaction (HCI) were presented. Fifty-four subjects were asked to find interface elements from various panel structures. The arrangements were differentiated by their orientation (vertical, horizontal), colour pattern (ordered, unordered) and object(More)
The paper is concerned with various ways of analysing the subjective assessment of displaying digital signage content. In the beginning the brief description of the signage system evolution is described and next, the carried out experiment is depicted. The preferences of the 32 subjects were obtained using pairwise comparisons of the designed screen(More)
Researchers employed digital manikins to determine the space necessary in an emergency-medical-service helicopter to effectively and efficiently conduct life-saving medical procedures. To simulate resuscitation with appropriate digital human models, they used Anthropos ErgoMAX modeling software in the 3D Studio Max environment.
1 . IN T R O D U C T IO N Ergonomics, which focuses on the design of human–machine systems with respect to requisite compatibility between the users, products, systems, and environments, is often faced with the complex and uncertain relationships between human characteristics, various artifacts, and human activity requirements (Karwowski 1991).(More)