Security Risk Perception Of Warning Signs And Their Attributes

Along with the continuous expansion of China’s production scale,the safety risks in production activities have become increasingly serious,which would affect the steady development of the economy and the harmony and stability of society.Security incidents are related to people’s livelihood and are widely concerned by the government,the media and the public.How to effectively regulate safety production management and effectively reduce safety accidents has become an important issue that needs to be solved urgently in scientific development.As one of the safety management tools,safety signs play an important role in accident prevention,hazard warning and behavior guidance.Therefore,how to design and set the safety signs can fully play its due role has become a research hotspot in the field of safety signs.Traditional research methods for safety signs have been conducted using questionnaires.With the development of cranial nerve technology,more and more social science research has begun to involve the neural level.This paper carries out research on safety signs from the perspective of neuroscience.In this paper,psychological experiment methods and event-related potential techniques are used to find the indicators of the effectiveness of warning signs at the cranial nerve level.On this basis,the effects of warning signs` attributes—azimuth,distance and size on the effectiveness of warning signs are studied.The main research contents include:Study 1 compares the warning signs with the blank images and analyzes the differences between them in the EEG signals.The experimental results show that there is a significant difference between the response of the warning signs and blank in EEG level,which mainly reflected in the amplitude of the N100/P200/N400.The results of the experiment revealed the process that human brain processes warning signs and determined the N400 as a measure of the effectiveness of the warning signs.Study 2 explores the effect of the location one attribute of warning signs on the effectiveness of warning signs.The study divided the location into two factors for EEG experiments.One is the distance and the other is the orientation.The distance is divided into three experimental levels of 15°,25°,and 30°;the azimuth is divided into eight experimental levels: right above,under,right lower,right left,right right,upper left,lower left,upper right,and lower right.Experimental results show that there is no significant difference between the different orientations in the process of cognitive processing.In the early stage of visual stimulation,the direction of "right" has a significant inhibitory effect.In the advanced cognitive processing process,the latency of the directions "upright,right,top right,bottom right" is significantly larger than the blank picture;warning signs between different distances(within the range of 15° to 30° from the center of view)have no significant differences in cognitive processing.In advanced cognitive processing,the latency of each distance is significantly larger than the blank picture.Study 3 explores the effect of the size another attribute of warning signs on the effectiveness of warning signs.The study divided the size into 5°,10°,15°,20° four experimental levels.Experimental results show that there is no significant difference between the different sizes(between 5° and 20°)in the cognitive processing of the brain.In the early processing of visual stimulation,the warning signs of the size of 5°,10° are significantly longer than the blank picture.In advanced cognitive processing,the latency of each size is significantly larger than the blank picture.