average psychological tension. If it is more than 20%, the tension is high. If the range
of the variation coefficients is less than 10%, the tension is low. The indicators, which
characterize the intensity of heart rate (HR), tremor, concentration and attentional
resource allocation, memory and thinking, are also given in the table.
The comparison of the HR intensity of the rolling mill operators in two countries
showed that the occupational activities of the chief rolling mill operators from China
were more intense than the ones of the chief operators from Ukraine. The requirements
of the attentional resource allocation on a significant number of controlled mechanisms
and the concentration of attention (which was increased by the attention slippage) are
confirmed by the tension indicators of psychical functions.
Table 3 Variation Coefficients (%) of Psychical and Physiological Functions
Indicators of the Rolling Mill Operators
Functions
Manipulator Operators
Chief Operators
Ukraine
China
Ukraine
China
Concentration of
Attention
19,9±7,5
16,8±8,5
23,0±5,5
17,8±9,6
Attentional Resource
Allocation
17,5±9,0
24,2±11,8
21,3±7,0
36,1±9,8
Memory
40,4±24,1
31,7±23,6
33,6±23,1
37,1±25,8
Thinking
12,5±7,2
12,5±8,5
12,9±4,9
14,1±7,0
Tremor
37,5±16,9
40,0±17,8
33,1±12,6
38,2±6,9
Heart Rate Intensity
6,9± 4,4
7,8±3,3
8,1±4,9
5,8±1,9
According to the Tables 3 and 4, the attention resource allocation of the Chinese
operators prevails over their concentration of attention.
Table 4 Psychical Functions Indicators of the Rolling Mill Operators (М±m)
Functions
Manipulator Operators
Chief Operators
Ukraine
China
Ukraine
China
Concentration of
Attention
11,4±0,1
11,2±0,2
11,2±0,2
21,5±0,2
Attentional Resource
Allocation
11,6±2,0
13,1±2,1
13,1±2,1
13,9±1,6
Memory
5,0±1,0
4,1±0,9
4,1±0,9
4,8±0,6
Thinking
30,7±7,8
31,6±5,5
31,6±5,5
33,0±8,0
State Anxiety
41±4
40±2
40±2
35±7
Trait Anxiety
42±3
40±3
40±3
38±5
Age
31±5
32±6
32±6
35±3
Gender
10±2
11±3
11±3
11±2
But in Ukraine the concentration of attention of the rolling mill operators, who
had to recognize a slippage of the rolls on the basis of visual information from the
functional area, prevails over the distribution of attention. Thus, the control systems
of rolling mill analogues are specific.
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