• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.6
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• pp.615-623
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• 2020

In order to prevent the dangers of major marine accidents, it is very important to be aware of in advance through marine incidents in the background of Heinrich's law, formulated by the safety pioneer who is credited with focusing on workplace safety with emphasis on the human element. At least 11 cases of collision accidents occurred in the Busan VTS area from January 1st to December 31st, 2019, and 24 cases of VTS marine incidents were reported during the same period. According to Heinrich's law, there could be many more potentially risky situations besides the 24 reported cases. In this study, the criteria for VTS marine incidents were established through advanced research and a survey of VTS operators, and analysis of 24 cases of VTS marine incidents in the Busan VTS area. Traffic surveys were conducted for three days to identify potentially hazardous situations. According to the survey, there were 216 cases of VTS marine incidents, and within a year, it is estimated there could be about 26,280 cases. Even if conditions such as "missing VHF communication feedback" which is an important cause of marine incidents, are not reflected, there are many potential risks in the VTS area. Thus, it is vital to strengthen the VTS marine incident reporting system.

• Journal of Engineering Education Research
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• v.13 no.4
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• pp.43-50
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• 2010

The purpose of this study is to analyze university students' views on STS(science-technology-society) literacy. We divided definition and interaction of science, technology and society in the views' category about STS literacy. Research object was three universities' students(engineering department: 119 and social science department: 117) in Seoul and Jeju. Research result was following. First, students from engineering department valued convenience of life in the definition of science and technology. Students from social science department valued explanation of phenomenon and experiment in the definition of science and technology. Second, two groups perceived inter-relationship of science, technology and society. Third, two groups had different opinions about responsibility and ethics of scientific technician and technical use. As a result of this study, students perceived highly about STS literacy. Therefore, the result of this study will provide important implication for establishing and operating subjects about STS literacy in university curriculum.

• Korean Journal of Social Welfare
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• v.58 no.2
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• pp.355-375
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• 2006

The objective of this study examined the effect of job characteristics on the job satisfaction of social worker employed by 1st social agency, hospitals. Data were collected by 240 social workers. Based on Hackman and Oldham's(1975) theory of core job characteristics, this study was to defined other element of job characteristics, in social worker's duties, focused on moderating effect of self-confidence for job satisfaction, and compared to social worker's job characteristics between 1st social agency and hospitals. The results of this study were summarized as follows; first, job autonomy, feedback among Hackman and Oldham's 5 core job characteristics showed positive influence on job satisfaction. The other job characteristics found out significantly effected social worker's job satisfaction than Hackman and Oldham's 5 core job characteristics. Second, identities of social worker's job, cognition of professional level, necessity, and self-confidence variables were found to have a statistically significant strong relationship with job satisfaction of 1st setting social worker. The other side, necessity, self-confidence, sex, social worker's academic career variables positive influenced medical social worker's job satisfaction. Third, the moderating variables which had significant difference among social worker's working conditions. 1st setting social worker's self-confidence partial moderated the effect of job characteristics on social worker's job satisfaction. But, medical social worker's self-confidence not moderated the effect of job characteristics on job satisfaction. As a result, Social worker's job satisfaction depended on job characteristics and self-confidence. Therefore, to assure the job satisfaction, redesign for social worker's job characteristics, reinforced their self-confidence. Staff-development education program, supportive environment, supervision program is strongly recommended.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.208-223
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• 2020

In the 21st general election held in April 15, 2020, the importance of social media as an election campaigning tool became more prominent when engaged with Corona 19. Therefore, in this study, various studies were conducted to establish SNS strategy as an election campaign tool. This study analyzed the contents of SNS (Facebook, Twitter, YouTube) activities as an election campaign tool to analyze messages on social media messages of candidates Lee Nak-yeon and candidate Hwang Kyo-an of Jongno-gu, Seoul during the 2020 21st National Assembly election. Data collection mainly analyzed posts from each candidate's official account, and the research method used text analysis using the R program. Word cloud, comparative analysis, q-graph analysis, LDA, and STM analysis were used during text analysis. In addition, the analysis result was confirmed to be statistically significant through correlation analysis. As a result of research, candidate Lee Nak-yeon's election includes corona, people, problems, crisis, suffering, and wisdom, which indicates that the crisis caused by corona must be overcome through any means possible. On the other hand, candidate Hwang Kyo-an's election includes Moon Jae-in, the regime, save, the fatherland, the judge, and the economy. And from the perspective of political publicity, candidate Lee Nak-yeon made a lot of acclaims, while candidate Hwang Kyo-an made a lot of attacks, and both themes emphasized the policy rather than the image.

• Archives of design research
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• v.16 no.4
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• pp.289-298
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• 2003

The 21st century could be called the age of Experience Economy associated with the importance to external and internal experience of product users. It needs the understanding of customer's needs in new point of view. In the area of design development, it requires the extensive application of experience from traditional method that was based on the style and usability to more advanced concept. To correspond to these changes, we need to explore new customer's value system for knowledge-information design and systematic approaches to experience system. The purpose of this research is to define the concept of 'experience' newly in the importance side of customer's life, form a clear definition of experience design and present the model of application system. Theoretical frameworks of this research are based on the Empiricism and John Dewey's theory. By applying these frameworks make dear the concept of experience concept and reanalysis the meaning and style in the perspective of design. In this process, we can extract the main factors that inducing the experience, create new application system and model again to the field of design. Application model can creates various experiences through supplying different experience style and factors for customer, make customer realize experience object. Experience designs offer optimal experience to users by making a plan and design experience to user's goal.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.34 no.1
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• pp.74-80
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• 2006

This paper addresses the trajectory optimization of Unmanned Aerial Vehicles(UAVs) under multiple ground threats like enemy's anti-air radar sites. The power of radar signal reflected by the vehicle and the flight time are considered in the performance cost to be minimized. The bank angle is regarded as control input for a 1st-order lag vehicle, and input parameter optimization method based on Sequential Quadratic Programming (SQP) is used for trajectory optimization. The proposed path planning method provides more practical trajectories with enhanced survivability than those of Voronoi diagram method.

• Korean Journal of Acupuncture
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• v.30 no.3
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• pp.145-150
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• 2013

Objectives : The aim of this study is to review the acupoints used in cocaine studies and interpret the effectiveness in an aspect of meridian theory of Korean medicine. Methods : Authors searched 50 articles in PubMed, 16 in KISS, 9 in OASIS, 40 in NDSL, and 19 in DBPIA, with the keyword of 'cocaine' or 'acupuncture'. The articles written in English only were included. The articles related with cocaine(abuse, dependence, sensitization, intake, withdrawal sign, withdrawal syndrome, reinstatement, seeking) only were subjected. The articles which used manual- or electro-acupuncture were included, and auricular was excluded. Results : The most frequently used acupoint was HT7, while LI4, LU9, ST36, and SP6 were used once respectively. HT7 could be understood to be used from the meaning of the name as well as the theory that Heart Meridian is deeply related with the brain function. LU9 seems to be used to enhance the effect of HT7. LI4 is thought to control reverting yin that flows toward the top of head following the theory of Jang Bu Sang Tong. ST36 appears to be used because it could regulate stress reaction that reverting yin is associated with. SP6 seems to have effect on brain function due to its ability to control spiritual disorder. Conclusions : The acupoints used in the cocaine studies are thought to influence the brain function through diverse mechanism, and Jang Bu Sang Tong theory seems to be involved in the mechanism, at least in part.

• Archives of design research
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• v.19 no.5 s.67
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• pp.269-280
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• 2006

In the 21st century, a nation's industrial success will depend on her cultural industry. Thus, Korea has been investing much in the cultural contents industry, expecting high. A nation's potential in the industrial contents industry will be determined by 1) IT infrastructure, 2) digital convergence, 3) rich cultural heritage and 4) government's effective policies. Nevertheless, our cultural contents industry is not as much homogeneous as that of the United States or Japan, but only some parts of it have grown much. So, our cultural contents industry is not very stable, which means that it would grow in a short term but not in a long term. One of the ways to promote the cultural contents industry effectively may be derived from Jean Baudrilliard's theory of simulacra. The aim of this study is to review the ultimate simulacra required of our cultural contents industry, focusing on Disneyland which Jean Baudrilliard emphasizes as the most perfect simulacra.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.137-138
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• 2019

The International Maritime Organization (IMO) adopted the Circular 101 (MSC / Circ. 1604) as an interim guidelines for MASS trials at the 101st Maritime Safety Committee. This guideline will be used as a guideline for the sea trials of Maritime Autonomous Surface Ships(MASS) in the future and will be used by government authorities and stake-holders to secure infrastructure for MASS safety, environmental protection and remote operation. The purpose of this study is to analyze the Interim Guidelines for MASS Trials adopted by IMO and to clearly classify the responsibilities and obligations of governments of stake-holders, and to present the main points of risk management necessary for maritime test operation from the perspective of human factors.

• Journal of the Korean earth science society
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• v.34 no.4
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• pp.356-367
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• 2013

We study on the concept and reason of seasonal change that 164 university students have. Subsequently the concept types on the seasonal change are classified according to the characteristics and conceptual change after teaching on astronomy. All of the students were simply checked by the questionnaire of multiple choice and essay method before learning on the subjects. And then they answered to questionnaires of similar type after one semester. By the analyzed results, we classify it to three steps of hierarchical concept structure. The first step is the cosmic perspective that is related to the Earth's condition and motion. The second step is the influence of the Earth that is directly affected by the first step. The third step is observer's perspective on the Earth depending on the second step. Among the answers, the first step is prominent and second step is rare. The answers on the reason of seasonal change show some kinds of type which are 1st, 1-2nd, 1-3rd, and 1-2-3rd step. By the result, it is arranged in sequence like as 1-3rd>1st>1-2nd>1-2-3rd type. The lowest number of students was 2nd step of the Sun's altitude and duration of daytime in pre-test. However the students of 2nd step obtained more correct scientific concept on the seasonal change after learning on the subjects, and got the higher score in the post-test than in the pre-test. We found how much important the hierarchical structure on the reason of seasonal change is. As the results, second step on the learning of the Sun's altitude and duration of daytime essentially have to teach after first step. And then third step have to teach. At last, it is sure that the students can obtain the concept of seasonal change.