• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.6
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• pp.4086-4097
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• 2015

This study examined the level of an emotional labour, depressive symptoms, and presenteeism of counselors working in a call center depending on socio-demographic characteristics, health-related factors, and job-related factors. Especially, the main purpose of a survey was to investigate the relevance to an emotional labour, the level of depressive symptoms and presenteeism. The research subjects were 304 counselors working at two call centers in Daejeon, and the survey was conducted from April 1, 2014 to May 31, 2014, using a structured self-administered questionnaire. As a result, the emotional labour, depressive symptoms and presenteeism experienced by the research subjects had a deep relation to many variables like socio-demographic characteristics, health-related factors and job-related factors. Especially, presenteeism showed a meaningful positive correlation with depressive symptoms and emotional labour factors. According to the result of a hierarchical multiple regression analysis, the meaningful variables related to presenteeism were age, the amount of a physical burden, the level of depressive symptoms, the surface action of an emotional labour. Therefore, to lower down the counselors' presenteeism, the development and implement of a mental healthcare program to control not only depressive symptoms and the level of an emotional labour is urgently needed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.10
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• pp.6193-6203
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• 2014

This study was conducted to determine the quality of sleep, and its association with the sociodemographic characteristics, health-related characteristics, and job-related characteristics among male workers in small-scale manufacturing industries with fewer than 50 members. A self-administered questionnaire was distributed to 856 male workers from April $1^{st}$ to June $30^{th}$, 2011. The survey items included the variables of sociodemographic, health-related, job-related, and quality of sleep. As a result, the quality of sleep according to the PSQI of the study subjects revealed 32.0% to be good and 68.0% to be poor. The quality of sleep assessed by hierarchical multiple regression analysis was significantly lower in the married group, those with lower BMI, and those with a lower level of subjective health status, non-smoking, alcohol drinking, without regular exercise, coffee drinking, blue color, had a longer of working hours, subjective health status, had a visiting out-patient department, and had a history of hospitalization. With the above model, the job characteristics had 13.1% explanatory power. This suggests that the quality of sleep (PSQI) has more power when combined with the job characteristics.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.2
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• pp.1195-1203
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• 2014

Since IFC (Industry Foundation Classes) 4 is based on the representation of 3D elements for an architecture project, and does not define standardized shapes for civil projects such as roads, bridges, and tunnels etc, it has limitations in securing interoperability for exchanging a shape information model for the civil projects. Besides, since road facilities have a linear reference, which is modeled along the center alignment, it is difficult the designers to create a standardized 3D road model. The aim of this study is to configure structure elements and their attribute for a road in the perspective of 3D design for developing a shape information model for the road. To solve these issues, this study analyzes the design documents, which consist of a road design handbook, guide, specifications and standards, and then extract shape elements and their attributes of road structures. Such shape elements are defined as an entity item and we review a hierarchical structure of a road shape defined by a virtual road model. The detailed elements and their attributes can be utilized as a 3D shape information model for constructing BIM (Building Information Modeling) environment for Infrastructures. Besides, it is expected that the suggested items will be utilized as a base data for extending to IFC for a road subdividing the detailed shapes, types and attributes for road projects.

• KIPS Transactions on Computer and Communication Systems
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• v.5 no.12
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• pp.471-480
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• 2016

Recently, the damage of cyber attack toward infra-system, national defence and security system is gradually increasing. In this situation, military recognizes the importance of cyber warfare, and they establish a cyber system in preparation, regardless of the existence of threaten. Thus, the study of Intrusion Detection System(IDS) that plays an important role in network defence system is required. IDS is divided into misuse and anomaly detection methods. Recent studies attempt to combine those two methods to maximize advantagesand to minimize disadvantages both of misuse and anomaly. The combination is called Hybrid IDS. Previous studies would not be inappropriate for near real-time network environments because they have computational complexity problems. It leads to the need of the study considering the structure of IDS that have high detection rate and low computational cost. In this paper, we proposed a Hybrid IDS which combines C4.5 decision tree(misuse detection method) and Weighted K-means algorithm (anomaly detection method) hierarchically. It can detect malicious network packets effectively with low complexity by applying mutual information and genetic algorithm based efficient feature selection technique. Also we construct upgraded the the hierarchical structure of IDS reusing feature weights in anomaly detection section. It is validated that proposed Hybrid IDS ensures high detection accuracy (98.68%) and performance at experiment section.

• Korean Journal of Heritage: History & Science
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• v.53 no.2
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• pp.88-109
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• 2020

This study aimed to distinguish categories of archival information and identify properties by their detail types, so that the various forms of architectural heritage information generated can be managed based on their attributes and characteristics. First, the specific uses of terms in the legal system were reviewed and their associated concepts specifically defined. "Architectural heritage" was defined as architecture belonging to the category of tangible cultural heritage as designated by law, and "architectural heritage archival information" was defined as all kinds of material expressed by electronic processing of the actual status for preservation and management. Next, the production status of architectural heritage archival information was reviewed in relation to the legal system. This confirmed that relevant legal systems were organized hierarchically and that various types of archival information were generated in a single project. Furthermore, it was confirmed that even archival information produced in the same form contained differing contents depending on the specific purpose and method, and that there was no classification by which to cover all archival information. Finally, it was also confirmed that detailed drawing types could be categorized according to the purpose of production and the target of the records. Based on the findings of this review, the type and properties of archival information were presented as the primary classification criteria, and the architectural heritage archival information was divided into 6 general types and 27 detailed types. Specifically, the linguistic form, dimension, temporal property, and graphic form of archival information were applied as criteria for the classification of general types, and the target, production purpose, production method of archival information, and content characteristics of archival information properties of archival information by type were comprehensively reviewed.

• Korea journal of population studies
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• v.33 no.2
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• pp.33-59
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• 2010

This paper intends to find the determinants of the occupational aspirations of college students in Korea. According to Wisconsin model, the occupational aspiration of youth has a statistically significant influence on his or her actual education level and occupation choice implying that the more motivated with high-level occupational aspiration will obtain the higher level of occupation. The analysis for this study is based on the survey of undergraduate students' perception, attitude and lifestyle in Korea 2004, which was conducted against 1,947 respondents, and multiple regression model was utilized. The dependent variable for occupational aspirations was measured by the Standard International Occupational Prestige Scale (SIOPS) of Donald J. Treiman. Independent variables include social capital and cultural capital as well as demographic variables, socio-economic status, and human capital variables. Social capital variable was measured by the position generator scale of Nan Lin and Mary Dumin, and cultural capital variable was done to our original index. This study shows that social and cultural capitals are factors having significant influence on occupational aspiration, in addition to the well-known factors such as gender, human capital and the occupation of father.

• Journal of Korean Society of Transportation
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• v.34 no.4
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• pp.304-317
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• 2016

The advancement in technology including transportation and information communication has accelerated the flow of supplies, and the importance of the national logistics policy has increased following the expansion of the regional range of logistics to a national range. The rapid growth of the domestic logistics market results in the deficit of logistics facilities, inefficient operation of logistics facilities, and a complicated distribution structure. It has precipitated a plan aimed at efficiency improvement by building base logistics facilities, but this market is now undergoing difficulties due to low performance. Many studies on the revitalization of base logistics facilities have been conducted, but a causal analysis focusing on the function overlap of private logistics businesses has been absent. Therefore, this study has analyzed the function overlap of logistics facilities and the irrationality of the system, which resulted from the lost function of Inland Freight bases in the Yeongnam region. By suggesting the cause of disuse of base logistics complexes from the function overlap in the ground transportation of domestic freight, the study can provide the policy implication for the national logistics infrastructure.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.9
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• pp.3887-3896
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• 2011

This study was intended to measure the level of psychosocial stress among nurses working for a university hospital and to reveal its related factors. The self-administered questionnaires were given to 450 nurses during the period from October 1st to 31st, 2010. As a results, the level of psychosocial stress was 10.2% in normal group, 64.0% in potential stresses group, and 25.8% in high risk stress group. In correlation, psychosocial stress was positively correlated with job demand, but it was negatively correlated with job autonomy, supervisor and colleague support. For the results of hierarchial multiple regression analysis, the level of psychosocial stress was influenced by the variables of regular exercise, quality of sleep, subjective status of health, shift work, fit to the job, job demand, job autonomy and supervisor support. Especially, the psychosocial stress was higher related with the contents of job stress increased with explanatory powers of 18.1% on the psychosocial stress.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.2996-3006
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• 2014

The purpose of this study was to estimate self-esteem, social support and depressive symptoms among college students, as well as to reveal its related factors. The self-administered questionnaire was filled out by 471 students from university located in Daejon city and Chungnam during two weeks from April 23, 2013. As a results, lower the self-esteem is, the depression level comes out to be higher. Also weaker social support is the factor to give rise to depression. Self-esteem and social support showed negative correlation with depression. Social support showed positive correlation with self-esteem. According to hierarchical multiple regression analysis, following factors influence depression level with explanatory powers of 23.8%: sex, age, stress for body shape, perceived economical status, studying time, self-esteem, and social support. In the conclusion, this result imply that depression level of college students is closely related to self-esteem and social support. Especially, social support showed higher correlation with depression.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.10
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• pp.666-677
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• 2016

This study analyzes determinants of strategic marketing alliances' performance using 'continuous use intention' of consumers in the Korean credit card industry. Specifically, this study aims to provide comprehensive and synthetic understanding of these factors divided into firm- level and consumer- level variables. Thirty alliance cards were chosen randomly. For firm- level data, managers from the thirty selected cards were interviewed concerning their respective firm and alliance operation. For collection of consumer- level data, 610 card holders from these thirty cards were surveyed concerning card benefits, benefits information, brand image, and continuous use intention. The hierarchical linear model (HLM) was employed to analyze this multi-level data, yielding the following results: First, consumers identified three factors that positively influence continuous use intention. Second, with respect to firmlevel factors, alliance partner's marketing capability is not positively related to intention, whereas fit of alliance goal influences consumer's continuous use of card. Third, contrary to expectation, the positive interaction effects between consumer level variables and firm level variables were found to be not present.