This paper presents the procedure and results of two experiments dealing with the force resolution of the human finger and with haptic demands on push-buttons. The outcome is used to specify design details of a novel approach to a flexible control panel. A haptic display controlled by a PC enables the simulation of push-buttons with programmable forcedisplacement curves. The “just noticeable fo...

A great deal of research has investigated the potential parameters of tactile feedback for virtual buttons. However, these studies do not take the possible effects of feedback latencies into account. Therefore, this research investigates the impact of tactile feedback delays on touchscreen keyboard usage. The first experiment investigated four tactile feedback delay conditions during a number e...

This paper presents an evaluation and recommendations for the improvement of the user interface (UI) of medical exoskeleton robots for people with mobility disorders. Existing UIs of currently available medical exoskeletons lack the flexibility to serve a diverse user group who require more customization. A UI prototype consisting of a glove with buttons attached on fingertips, and a display mo...

This report illustrates the technical design for the monitoring system of wellbeing and demonstrates its feasibility in elderly people. The Con-Dis device consists of three buttons with a happy, neutral or unhappy face, each describing the mood of the patient. The functionality of the device was tested on 5 test persons who were asked to demonstrate their state of well-being by pressing one of ...

Bis vor wenigen Jahren waren viele Elemente grafischer Benutzerschnittstellen (engl. Graphical User Interfaces, GUI) durch realistische Gestaltungsmerkmale geprägt. Viele GUIs stellten beispielsweise dreidimensionale Buttons mit Schatten, Spiegelungen und Lichteffekten dar, ohne dass dies für deren Funktion notwendig gewesen wäre. Diesem so genannten Skeuomorphismus steht seit wenigen Jahren de...

The industrial design prototyping process has previously shown promising enhancements using Spatial Augmented Reality to increase the fidelity of concept visualizations. This paper explores further improvements to the process by incorporating tangible buttons to allow dynamically positioned controls to be employed by the designer. The tangible buttons are equipped with RFID tags that are read b...

UNLABELLED Our understanding of etiology and pathogenesis of many disorders, corneal included, greatly relies on existing knowledge in human biochemistry and biophysics. This study was aimed at chemical mapping of normal and keratoconic corneas. MATERIAL AND METHODS Modern methods of analytical chemistry, such as X-ray fluorescence and energy-dispersive X-ray spectroscopy on the basis of scan...

A device for measuring signal transfer within and between hemispheres has been developed at the Center for Neuropsychological Research at the University of Trier, Germany. It contains two identical panels allowing both tactile stimulation and motor response with buttons for the fingers of each hand. The buttons have two functions. They can exert a slight tactile stimulation to a finger, and the...

The experiments illustrated the effect of procedural factors in reaction time measurements on lateral differences between visual fields for faces in two-reaction paradigm. The subjects were instructed to decide whether two faces presented successively in the left or right visual field were the same or different. The two experiments differed in the situation of response buttons in horizontal lin...

Abstract Although smartphones are equipped with accessibility functions, they still pose significant problems for visually impaired people. Sometimes these functions cannot fulfil the expectations of users. Early mobile devices had physical buttons and a keypad, users could navigate around keypad using tactile markers on buttons. However, lack makes it much more difficult to operate touchscreen...