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유재창,임성수 경희대학교 산학협력기술연구원 2006 산학협력기술연구논문집 Vol.12 No.1
As the autonomous service robot market rapidly grows, the standard indices for performance evaluation of the service robot are essential. In this paper, to develop the performance indices for the general autonomous robots the authors adopt the cleaning robot as the pilot product, which have been developed and marketed actively recently. A set of performance indices for the unique functions of the cleaning robot are established to include the mobility, cleaning performance, and noise level. Also a test platform for the performance evaluation of cleaning robot is designed and constructed in accordance to the established performance indices. The current paper includes the performance evaluation results performed using two commercial cleaning robot products.
경찰의 직무스트레스가 직무태도에 미치는 영향에 관한 연구
유재창(Yoo Jae Chang) 경찰대학 경찰학연구편집위원회 2014 경찰학연구 Vol.14 No.2
The purpose of this study is to analyze the effect of the job stress of the police on the job attitude comparing security police and auxiliary police. Despite big differences among police divisions, existing studies on the police job stress have neglected those differences. This study is meaningful to take those division differences into account and confine the scope of the study to specific division. In addition, this study deals with auxiliary police in police job stress study as they are very important to deal with increasing assembly and demonstration. In order to examine the effect of the job stress of the police on the job attitude, a survey was conducted to the security police and auxiliary police in the first riot squad of Seoul police agency. The analysis results are as follows. First, it was verified that the effect of job stress of security police and auxiliary police on the job attitude is different with that of general police. Second, it was verified that the security police and auxiliary police have different level of job stress and job attitude. The auxiliary police showed lower level of role excess stress and higher level of role ambiguity stress than those of security police. Meanwhile, the security police showed lower level of job satisfaction and higher level of organizational commitment than those of auxiliary police. Third, it was verified that the effect of job stress of auxiliary police on the job attitude is different with that of security police. In the case of the security police, role excess stress, role conflict stress, and role ambiguity stress had effect on the job satisfaction by order. On the other hand, in the case of the auxiliary police, role conflict stress, role ambiguity stress, and role excess stress had effect on the job satisfaction by order.
신학균,윤재득,유재창,김문보,김기순,서순덕 대한바이러스학회 1993 Journal of Bacteriology and Virology Vol.23 No.2
Enzyme immuno assay (EIA) which utilizes a solid phase coated with a recombinant antigen derived from the hepatitis C virus (HCV) genome was evaluated for efficacy in the detection of anti-HCV. Using the antigen expressed on E. coli from a cDNA clone encoding structural region and non-structural region of HCV genome, the prevalence of HCV antibody on 2858 peoples in Korea was investigated. Prevalence of antibodies to HCV is 1.2% in townsmen, 0.7% in farm village residents and 2.7% in seashore residents considered to be at low risk for exposure to HCV. These limited data also indicate that the prevalence of antibodies to HCV is 31.0% in commercial plasma donors, 10.6% in HIV(Human Immunodefecience Virus) antibody positive group and 4.8% in prostitutors considered to be at high risk for exposure to HCV. And 51(45.9%) sera were positive for hepatitis B core antibody, 3(2.7% ) sera were positive for hepatitis B surface antigen and 27(24.3%) sera were elevated ALT(alanine aminotransferase) concentration among 111 sera which were confirmed anti-HCV positive. We confirmed 10 specimens have had RNA of hepatitis C virus among 25 anti-HCV positive specimens by polymerase chain reaction(PCR) and southern blot hybridization, simultaneousely, comparative test was carried out among 8 commercial anti-HCV kits in Korea, and 6 kits had shown specific homology more than 95%. These seroepidemiological data suggest that HCV plays an important role as an etiological agent in Korea.
신학균,윤재득,유재창,김문보,김기순,서순덕,김정서 대한바이러스학회 1993 Journal of Bacteriology and Virology Vol.23 No.2
Serological study on HEV(Hepatitis E virus) infection for 462 cases was carried out with EIA technique, and also the possibility of mixed infection with other viral hepatitis among the HEV antibody positive cases was investigated from April to October 1992 in Korea. Positive rate of hepatitis E antibody for residents in seashore town and blood donors were shown 8.0 % and 9.5% respectively, and that of 50 to 60 years old age group was higher than the other age groups, while the lowest rate was scored at under 20 years old age group. According to investigate mixed infection with various hepatitis virus in HEV antibody positive cases, anti-HAV, anti- HBs, HBsAg, and anti-HBc EIA tests were tested and the results were as follows;79.3% of HEV positive cases coreacted with HAV antibody, 31% with anti-HBs, 13.8% with HBsAg, 65.5% with anti-HBc and 76.7% with ALT elevated cases, respectively. There was no HEV positive case among the HCV antibody positive cases and paid blood donors, and in cases of using public water spring(wells) were shown more higher positive rate of anti-HEV than the other groups such as tap water or private well user cases.