• Journal of the Computational Structural Engineering Institute of Korea
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• v.28 no.2
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• pp.169-176
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• 2015

The protection facilities against the collision of the vehicle should be considered in the design of the bridge by the regulations, but there is no regulation against the collision of the vehicle in the design of the column of underpass. Impact analysis for the column of underpass was performed in order to evaluate the damage of the structure by the collision of the vehicle. Impact analysis was performed according to the various parameters such as material properties of the structure and types and velocities of the vehicle. From the numerical results, the structural damage for the column of underpass by the collision of the vehicle was evaluated and considerations in the design for a column of underpass against the collision of the vehicle were examined.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.6
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• pp.743-750
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• 2019

Most of the water supply facilities that use rivers as sources do not have monitoring facilities such as precipitation and stream flow measurement, and there is no judgment standard for drought response such as water intake control in river flow during dry season. In addition, it was confirmed that local government officials, who deal with actual drought work, have limitations in applying the drought index (SPI, PDSI, etc.) and diffusion models that have been proposed so far in advance. Therefore, in this study, the drought prediction system was constructed to determine the number of water-intake available days using SWAT (Soil and Water Assessment Tool) and the water supply network from the intake source to the beneficiary area, suggesting the drought spreading time and space.

• Journal of the Korean GEO-environmental Society
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• v.15 no.12
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• pp.53-59
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• 2014

In order to obtain basic data for reasonable design of rockfall prevention net unreasonably being designed according to experiences, this paper determined a standard cross section and analyzed the effects of parameters such as inclination and height of slope faces, rockfall weight, separation distance on rockfall behaviors such as bounce height, kinetic energy and passage rate. The weight of rockfall changed from 400 kg to 700 kg and then to 1,000 kg. With the height of 20 m as the standard, the test was conducted with the inclination at $63^{\circ}$ and $55^{\circ}$ which may affect rockfall behaviors. Analysis was made while changing the fall height of rockfall from 3 m to 15 m and then to 20 m, thereby analyzing and evaluating changes in maximal kinetic energy occurring in the base of slope. According to the analysis result, in designing a rockfall prevention wire net, a design considering various conditions including inclination of the slope, expected size or weight of rockfall, situation of the slope and the shape of rockfall, and rockfall trace is judged necessary beyond the current uniform application.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.29 no.2
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• pp.247-274
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• 2018

In 2013, the Japanese bookstore company CCC entrusted the management and operation of the library as the designated administrator of Takeo City Library. The library has a commercial facility in the hall and uses its own classification system. It was reported the number of visiting users was increased as 3.7 times in the first year of the reopening and it has attracted the attention of the public. The purpose of this study is to investigate the background, current status and operational characteristics of the Takeo City Library by conducting the literature review, content analysis of newspaper articles and interview survey on the library. As a result of the research, newspaper articles positively assessed the fact that the library provided a 'multicultural space' to small city residents, increased visitors, and local economic effects, but pointed out that the operating deficit continued, and the problem occurred in the selection of collections.

• Explosives and Blasting
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• v.28 no.2
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• pp.37-49
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• 2010

Ground vibration caused by blasting in the urban area close to structures can give some indirect damage to human body and may lead to structural damage to buildings. At the stage of design or when complaints were filed by residents, the test blasting in borehole, which is most practical for expressing simple vibration wave form quantitatively, is usually chosen for assessing the degree of damage to structures. In this paper, some lessons gained from the application of electronic detonator triggering system in borehole test blasting are presented. The difference in delay time of detonator when borehole is blasted by electronic detonator and electric detonator are discussed. The peak particle velocities measured at the structure embedded in the similar rock layer to main line of tunnel at test site and measured at the road surface just above the tunnel having different overburden layers were analysed to draw their relationship. By comparing the results with those appearing in some published literatures, the usefulness of the borehole test blasting and the importance of delay time of detonator are addressed.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.5
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• pp.1259-1277
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• 2018

This study analyzes cyber security strategies, laws, organizations, and the roles of the ministries in the US, Germany, UK, Japan, China, and Korea and draws implications for establishing a practical and efficient next generation national cyber security governance. Under this goal, this study analyzes cyber security strategies, laws, organizations, and the roles of the ministries in the US, Germany, UK, Japan, China, and Korea and draws implications for establishing a practical and efficient next generation national cyber security governance. Based on the results of this analysis, this study suggests suggestions and directions for improvement of domestic cyber security governance.

• KIPS Transactions on Computer and Communication Systems
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• v.6 no.2
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• pp.87-94
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• 2017

Microsoft Office is an office suite of applications developed by Microsoft. Recently users with malicious intent customize Office files as a container of the Malware because MS Office is most commonly used word processing program. To attack target system, many of malicious office files using a variety of skills and techniques like macro function, hiding shell code inside unused area, etc. And, people usually use two techniques to detect these kinds of malware. These are Signature-based detection and Sandbox. However, there is some limits to what it can afford because of the increasing complexity of malwares. Therefore, this paper propose methods to detect malicious MS office files in Computer forensics' way. We checked Macros and potential problem area with structural analysis of the MS Office file for this purpose.

• Journal of the Korea Society of Computer and Information
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• v.25 no.7
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• pp.193-202
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• 2020

This study conducted a questionnaire survey of 320 security guards to investigate the effects of job stress and job exhaustion on job performance according to the bodyguard's organizational culture. The conclusions obtained through this study are as follows. First, in the organizational culture, the innovation culture was found to have a negative effect on the job stress at the .01 level. Second, organizational culture was found to have no direct effect on job performance. Third, among organizational cultures, market culture was found to have a statistically negative effect on job performance at the .01 level. Fourth, job stress was found to affect job performance statistically as a negative (-) at .001 level. Fifth, job exhaustion was found to affect job performance statistically as negative (-) at .001 level. Sixth, job stress was found to have a mediating effect as negative (-) at the .01 level statistically in relation to the innovation culture of organizational culture and job performance. Seventh, job exhaustion was found to have no statistically significant effect on the relationship between organizational culture and job performance.

• Journal of the Korea Convergence Society
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• v.11 no.7
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• pp.193-206
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• 2020

Despite recent changes in life style, the content called bookstore has steadily stood by our side, changing its shape. In this environment, This manuscript is a quantitatively empirical study that individual innovation affects a combined bookstore's service design factors and the user's intention to word of mouth. Researchers believed that individual innovation would affect a combined bookstore's service design factors. It was also assumed that there would be considerable causality between the combined bookstore's service design factors deduced through prior study. Furthermore, the assumption that these parameters would affect internal variables, perceived ease of use, perceived usefulness and satisfaction, word of mouth intentions was presented, and verified using An Integrated Model of Extended Technology Acceptance Model and Post Acceptance Model. Researchers expect that this research will contribute significantly in that it is a developer's approach to the combined bookstore that are seen as major tenants in large retail facilities.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.298-305
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• 2014

This study is to analyze the relationship of speciality of personal trainer, PT satisfaction and exercise adherence. To accomplish this goal, this study sampled 240 members of sports facilities of Seoul utilizing purposive sampling method in 2013. But this study finally used 219 samples in data analysis. Validity and reliability of instruments tested by expert meetings and reliability analysis. Chronbach's ${\alpha}$ is over .697. Data analysis is SEM using AMOS 18.0. Conclusions are the followings. Firstly, speciality of personal trainer influence on PT satisfaction of members. Secondly, speciality of personal trainer influence on exercise adherence. Thirdly, PT satisfaction influence on exercise adherence. Fourthly, PT satisfaction have not a mediating role between speciality and exercise adherence.