Does pure space clothing affect the concentration ability of coworkers and if how?

Authors: Carsten Moschner, Dr. Timo R. Hammer, Professor Dr. Dirk yard-pure multiplicity of activities in pure areas usually requires a high concentration ability, who will keep upright during a longer period also must of the coworkers. Difficult work always demands a high degree at accuracy, therefore error can cost not only much money, but also have clearly more extensive consequences, as for example with some activities under pure space conditions in the pharmaceutical industry. Even if the tendency is to contribute after ever higher degrees of automation to reduce � the source of error humans � there is straight these more complex work procedures, which make still humans irreplaceable in the production process. Now if a person in a certain surrounding field feels uneasy, then the attention here surely suffers. The concentration ability will decrease and the error frequency will thus rise. The challenge of the pure space operator consists of arranging the work surrounding field despite all purity-technical requirements for the coworkers in the pure area so pleasantly we possible in order to meet the risk of higher error rates. Thereby a along-crucial role comes to the pure space clothing. So far most investigations were limited about stretcher comfort and pure space clothing primarily to the thermalphysiological factors, thus steam transmittance ability, as well as the heat conductivity. Here the steam transmittance resistance forms a meaningful characteristic number for the determination/definition of the breathing activity of a pure space textile. Appropriate investigations from the past showed that the steam transmittance resistance values between different pure space textiles can differ around 100% and more. Differently expressed: There are fabrics, which one can call calm conscience breathe active - others are rather than being classified breathe-inactively. A second important size with the evaluation of the stretcher comfort of a pure space textile is surely the grasp � softness � the Haptik of a textile. Often the coworker decides in the first 5 seconds only by the Ertasten of the textile whether it carries pleasantly or not. This very subjective evaluation procedure can be placed behind instrumentation only extremely with difficulty. Due to above criteria, hautsensorische characteristics in combination with thermalphysiological factors and in interaction with ergonomic stretcher comfort characteristics (passport form, cut, Design) will thus feel less well the coworkers in different pure space clothing times more, times. Now however the question arises: How does this well-being feeling affect the efficiency of the coworkers? Do differences between different clothing systems show themselves and if, how highly these differences fail? That this important questions for the coworkers are not only, who must carry such clothes daily, but also decision relevant factors for an enterprise to be should, are easily comprehensible. With removing concentration ability and simultaneous increase of the error frequency develop enterprises higher costs, which will finally have direct influence on the competitive ability of the own products and services. Since the activities under pure space conditions very often represent the heart of a production, errors within this range weigh usually particularly heavily. Dastex took care of together with the high stone institutes question above in B�nnigheim and tested in a series of investigations different clothing systems in such a way whether they affect the concentration ability of persons and if, to which extent. The basis for this series of investigations with several test persons formed here a testing method developed particularly in high stone, which on internationally recognized and to standardised test systems of the industrial psychology is based. Test persons under defined conditions were exposed first to a 10-min�tigen concentration exercise (Stressorphase). Directly in the connection then the 80-min�tige test procedure followed. In this phase the concentration ability of the test persons was computer-basedly seized. The system determines thereby both the reaction rate, and the error frequency (number of errors). The concentration parameters divided attention (multitasking) were examined and selective ones continuousattention for the series of investigations the following clothing systems assigned see also table (see appendix) 1st normal, private road clothes 2nd pure space multi-path clothing (washable), consisting likewise of a hood, a pair of overalls and a pair covering boot, manufactured from a standard textile (= fabric A) of the house Dastex.3. A further set pure space multi-path clothing (washable) consisting of pair of overalls, hood and covering boots, however from a somewhat more lighter fabric (= fabric B) compared with fabric A. regarding the breathing activity (steam permeability) the fabric of the test row of 3 worse values proves, than the material from test row 2. the covering boots � it probably hardly influence on the total result of measurement to have � from the test row 2 was taken over there. 4. One-way clothing, consisting of pair of overalls, hood and covering boot of a material, as it at present usually as one-way clothing (type 4) in the pure space industry is used. The test persons led the tests in each case on different days to the same time under defined conditions (20�C, 42-44% rel. Air humidity) in a pure area of the ISO class 5 through. So the variable disturbances varying ambient temperature and personal daily bio rhythm could be eliminated. In order to exclude an influence of outside visual attractions, the tests in a closed cab, the so-called � stress box took place �. During the measurements it went pursuing therefore the concentration ability of the test persons during the defined period. The agesettled middle response time (RZ) was determined on visual, and/or auditive attractions, as well as the number of made errors per attempt module. The results are more near described now in the following (see appendix table 2/graphics 1). That the private road clothes, in which the test persons probably-feel fare, are when these investigations not best surely surprising. One should mean that pure space clothes affect the well-being of the coworkers in the direct comparison to the normal private everyday life clothing negatively as important and necessary filters between humans and product. The investigations presented here do not show however that the combination of clean-spacesuited intermediate clothing and pure space clothing from fabric A fared tendentious even better, as the usual road clothing � under any circumstances however more badly. On the other hand both the results of the combinations of fabrics B and the one-way variant are worse in the sum, as those the road clothing. Interesting are also the differences between the different pure space clothing systems. Significantly more badly the one-way clothing system fares compared with the two multi-path clothing variants (pure area). Both with the divided attention, and with that� Continuous attention sinks reactivity with error frequency rising at the same time. The differences between the two pure space multi-path clothing systems are not completely so significant. Here first the lighter, closer fabric points the better values in the range of the divided attention to beginning of the examinations, while that somewhat heavier, however fabrics with that, breathe-more active but� Continuous attention clearly better values exhibits. Since the activities in the pure area of normally rather long-term kind are and thus also the concentration ability upright during a longer period will keep must, is the continuous attention the more crucial criterion, what finally means that the material fabric A can be evaluated as the best pure space clothing system tested in this study. A possible explanation beginning, why the closer fabric (B) cut off at the beginning of the examinations (divided attention) somewhat better, is that the higher breathing activity (speak the smaller water vapour barrier) of fabric A positively affected only with longer duration of test the concentration ability of the test subjects, while at the beginning the smaller weight per unit area of fabric was more favourable B. Result: Carrying pure space clothing can affect the concentration ability of the coworkers clearly. This can draw both health, qualitative and economic consequences with production. With the Hohensteiner the relevant parameters can test system be seized for the first time instrumentation reliably. The pure space clothing systems tested here on multi-path basis, had no or only a small negative influence on the mental efficiency of the test subjects. The overall statement, carrying of pure space clothing affects generally the efficiency of the coworkers negatively, is due to the results with the fabric A thus any longer to be maintained. With the study presented here the tested one-way clothing in the classical style proved a negative influence on the mental efficiency of the coworkers, compared with the examined washable pure space multi-path clothing systems. Also with multi-path clothing systems it is valid to look regarding the maintenance of the concentration ability during a longer period more exactly, because depending upon breathing activity of the fabric, differences could be proven.

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