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Biomedical subjects

E Haider

Publications and source records attributed to E Haider.

13 recordsLinked to original sources
PubMed1983

[Development of demands with increasing technology in text processing].

Text-processing task demands are inquired about by means of an Ergonomic Job Description Questionnaire. The tasks are related to 5 steps of technologies and demands are documented for each of the technologies. With increasing technology demands on visual perception and work organisation dominate, while some demands on energetic work and environmental conditions decrease.

Computers↗
PubMed1983

[Tremor reaction to mental and emotional stress].

Reactions of tremor before and after stress were registered with a new method. Reactions with informatory-mental stress (adding tests with increasing time pressure) can only be interpreted by considering performance. Reactions with informatory-emotional stress (University examination; tasks in a central TV control room) are task specific when tremor is inter-individually normalized.

Fingers↗
PubMed1983

[Quantitative analysis of superposition of environmental task requirements].

Requirements for 1486 tasks have been registered with an Ergonomic Job Description Questionnaire (EJDQ). Frequencies of high and extremely high scaled environmental task requirements are analysed, related to branches, tasks and sex. The frequencies of superpositions are analysed for dominating requirements. Priorities for ergonomic research may be defined with the method presented.

Ergonomics↗
PubMed1982

[Ergonomic strain measurement in text processing].

Text processing task demands are analysed by using an Ergonomic Job Description Questionnaire. The tasks are classified by cluster analysis. Tasks out of each cluster are examined with respect to performance and physiological strain by 8-h measurements. These reactions are assessed in terms of tolerance limits and the distribution of demands is discussed for non-tolerable work conditions.

Female↗
PubMed1980

[Investigation of demands in data and text processing by an ergonomic job description questionnaire (DT-EIJDQ) (author's transl)].

A questionnaire for Ergonomic Job Description is developed for the area of text and data processing. The contents and structure of the method are described and its applicability is demonstrated in a field study. To interprete the data, methods of cluster, profile, and factor analyses are used. The jobs for which the data have been collected are classified according to their specific demands by the use of factor analysis. Further applications of the method are outlined.

Ergonomics↗
PubMed1978

[Performance- and strain-compensation with informatory work].

With results from literature it is shown that eye-blinking-rate is negative significant correlated with physiologic performance ability. Experiments with an abstract tracking task presented in this paper confirm that eye-blinking-rate is an indicator for activation. Taking in the indicator for activation (blinking-rate), tracking performance and central-physiological strain, phases of performance- and strain-compensation (stability, effort, fatigue, performance break-down) are defined in an hierarchical concept of stability. The compensatory processes of the human operator are discussed on the background of a stress-strain-concept taking account of the principle of feed-back.

Eyelids↗
PubMed1978

[Examination and assessment of time-variant human strain in motor car driving: real situation--simulation (author's transl)].

Time variant processes of activity, activation and strain of man are registrated during several hours of automobil driving (highway-autobahn) for different stress conditions and classified in terms of degrees of fatigue. By comparison with an assessment of strain in a simulated driving task with the same individuum and the same research-methods it is shown that the development of methods for measurement and assessment of time-variant human processes in laboratory experiments can be recommended, field-studies higher degrees of strain were found than under laboratory conditions.

Automobile Driving↗
PubMed1976

[Examination of blinking-rate in a simulated four hour driving task].

In a driving simulation task performance and physiological measurement of strain was registered on 3 subjects in 9 experiments. The time-variant behaviour of blinking-rate was examined together with performance, self-rating and physiological strain. The correlating results make blinking-rate a possible indicator for activation of willingness to good performance. A multidimensional concept for assessment of the degree of individual fatigue is presented and validated in respect of working-time.

Adult↗