Research On Bayesian Network Of VDT Work Fatigue

The definition of VDT work is the generic term of the works of data, text andimage, etc. information processing by using the personal computer (PC), the VisualDisplay Terminal (Visual Display Terminal: referred to as VDT) of computer system.As a representative of modern labor job, VDT work can enhance operator efficiency, atthe same time, it is also seriously affect the body’s physical and mental health. Forexample, problems of the visual fatigue, musculoskeletal symptoms, psychologicalfatigue are generally accompanied with the workers. This thesis use Bayesian Networkmethod to take a research, and take analysis and processing with the help of thesoftware of Netica. It has carried on the preliminary exploration for the establishmentof the VDT work fatigue research on Bayesian Network method.This paper analyses the domestic and foreign research about VDT work fatigue,and the human physiological and psychological effects caused by VDT work fatiguefrom various aspects. Based on the summary of the theory of VDT work fatigue anddetermination methods, this paper analyses the whole process of VDT work fatiguecaused by various factors, introduces the theoretical knowledge and advantages ofBayesian Network model, and then proposes the VDT work fatigue analysis methodsusing Bayesian networks method.The core part of this paper is to summarize the name of each nodes in BayesianNetworks and variable properties by using the method of literature, and to establish theBayesian Networks Topology about VDT work fatigue. Through the three weeksquestionnaire with the VDT workers of Qinhuangdao Dongyi Technology Co. Ltd., Ihave obtained the posteriori data. This paper is combined with the Maximumlikelihood estimation, calculating the conditional probability value, establishing theBayesian Networks about VDT work fatigue. The data analysis and inference ofBayesian Network model are taken by Netica software, and give the advises.This paper has completed the analysis and comprehensive investigation on VDTwork, and it also provides a theoretical basis and effective method to improve the modern enterprise management, and it has the certain reference value to the furtherresearch.