• Plant Journal
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• v.15 no.1
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• pp.25-30
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• 2019

In this study, by varying flow patterns, which is one of the hydraulic factors of FAC, a strategy to reduce pipe wall thinning by mass transfer has been investigated. A similarity between heat transfer and mass transfer was verified via theoretical analysis, and local convective heat transfer coefficients were analyzed using a commercial numerical analysis program. When ribs were installed inside and outside of the internal surface in the straight section of the pipe, the maximum local heat transfer coefficient was shown to decrease substantially by up to 24.9% compared to the basic flow depending on the position and shape of ribs. If a guide vein was inserted in the pipe elbow, the maximum local heat transfer coefficient decreased by up to 26.7% compared to the basic flow depending on the internal surface area of the pipe by the guide vein.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.447-454
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• 2019

The purpose of this study aims to be used as base data of a policy which forms university students' appropriate behavior for the prevention of infection by analyzing some university students' prevention awareness of new type of infection. A self-administered questionnaire survey about students' seriousness, sensitivity, self-efficacy, and prevention behavior intent of new infection, was conducted in an university located in Gyeonbuk from April. 30th to May. 11th, 2018. Analyzing factors which affect the prevention behavior intent of infection with controlled general factor and health behavior, the prevention behavior intent was increased by ${\beta}=.125$ as seriousness increases and ${\beta}=.709$ as self-efficacy increases in Model 2, final model. However, sensitivity has no significant effect on the prevention behavior intent. Originally sensitivity has to be a significant factor regarding to the prevention behavior intent of new infection. But the result that sensitivity has no influence at all, shows that the students are insensitive to new diseases as they don't fear or sense danger of new infection. Therefore, a disease control policy which helps to increase sensitivity has to be established.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.5D
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• pp.597-607
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• 2008

ATIS(Advanced Traffic Information System) provide valuable information as the travel time and traffic congestion, detour, traffic accident information to drivers, so it is being in the spotlight. But so far, the study on the consumer satisfaction with providing traffic information is incomplete. So, this study run a Canonical discriminant analysis and a Canonical correlation analysis by a QuantificationIItheory based on a Traffic Information Satisfaction image data through questionnaires, and found out the factors with influence on the consumer satisfaction. And this study definitely found out the correlation between consumer's recognition and traffic information satisfaction through understanding the change on the recognition about traffic information satisfaction by a QuantificationItheory. Finally, this study found out the change on the sensibility recognition of drivers by running the principal component anlysis, developed the traffic information satisfaction evaluation model considering the change on the recognition by using the structural equation model.

• Journal of the Korean Society for Library and Information Science
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• v.57 no.4
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• pp.185-208
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• 2023

In this study, a research model was designed and verified in order to determine whether the communication styles of public library managers affect employees' empowerment, job satisfaction, and life satisfaction. A survey was conducted among employees of four public libraries in the Gyeonggi region and 24 libraries in Seoul, and 229 valid responses were analyzed. The analysis revealed that authoritative communication style influenced employees' job satisfaction, while social communication style influenced their empowerment. Additionally, employees' empowerment impacted their job satisfaction, which in turn affected their life satisfaction. This implies that job satisfaction and life satisfaction of the employees can be achieved after communication and empowerment were well established within the organization. This study is meaningful in suggesting an effective management direction for strengthening the essence and foundation of public libraries by examining the theoretical significance and implications of the research result. This study also suggested that in the future, another research should be conducted based on a variety of characteristics by integrating the different communication styles of researchers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.492-500
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• 2018

This study was conducted to identify the degrees of awareness and performance of hospital infection control of early stage nurses working in medium and small sized hospitals. This survey was conducted for 15 days from Sep. 15 to Sep. 30, 2017. Data were then analyzed by SPSS Win 22.0 to determine the mean and SD, as well as to conduct t-tests, ANOVA, and Scheffe's test. The result were as follows: 1. There were significant differences in awareness of hospital infection according to urinary tract infection, respiratory infection, and disinfection of contaminated goods managements with age. 2. There were significant differences in performance of hospital infection according to hand washing (working department), fluid therapy (education need p<0.001), urinary tract (position), and respiratory infection management (position p<0.001). 3. The mean score of awareness and performance regarding hospital infection were significantly different (all items p<0.001). According to these results, systematic education for improving awareness and performance regarding hospital infection control by nursing staff in medium and small sized in hospitals should be conducted. In addition, organizational efforts to increase the number of early stage nurses and improve the usability of personal infection control devices should be encouraged.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.5
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• pp.294-301
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• 2017

Recently, online social networks have become one of the most representative Internet services and are being used increasingly, which allows people to share information and interact with other people. On the other hand, as the use of OSN is increased, there has been an increased incidence where illegally accessed personal information is used wrongfully. Accordingly, privacy has become a key concern by the users. Regarding the construct of information privacy concerns (IPC), this study explored the antecedents of IPC at the individual personal level - risk appraisal and perceived behavioral control - based on Protection Motivation Theory. Hence, the current paper investigated the moderating effect of gender in the relationship between individual characteristics and IPC. The hypothesized research model was examined with 233 questionnaires of OSN users. The results showed that the positive effects of risk appraisal and the negative effects of perceived behavioral control on IPC are supported. In addition, the moderate effects of gender between risk appraisal and IPC is only supported.

• Journal of Korean Society of Transportation
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• v.27 no.1
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• pp.129-141
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• 2009

Intermodal freight transportation is defined as the movement of freight from origins to destinations by two or more transportation modes. When implemented in hub networks, it could enhance the efficiency of the networks because consolidated flows are transported by more suitable modes and technologies. In spite of this advantage, the intermodal hub network design problem has received limited attention in the literature partly because of the complex nature of the problem. This paper aims to develop an optimization model for designing intermodal hub networks with sin91e allocation strategy. The model takes into account various cost components of intermodal hub networks including transportation, stationary inventory, and service delay costs. Moreover, using transport frequency variables, it is capable of endogenously determining the transportation economies of scale achieved by consolidation of flows. As such, the model is able to realistically represent the characteristics of intermodal hub networks in practice. Since the model Is a complicated nonlinear integer programming problem, we perform model simplification based on the analytical study of the model, which could facilitate the development of solution algorithms in the future. We expect that this study contributes to the design of intermodal hub networks as well as to the assessment of existing logistics systems.

• Journal of KIISE:Computer Systems and Theory
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• v.31 no.8
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• pp.432-444
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• 2004

In this paper, we construct the TMO-based object group model on distributed environment, and analyze and evaluate the executability for distributed real-time service of our object group model by developing the distributed real-time application simulator applying the model. The Time-triggered Message-triggered Object(TMO) is a real-time server object having real-time property itself. The TMO-based object group is defined as a set of objects which logically reconfigured the physically distributed one or more TMOs on network by a given distributed application. For supporting group management of the server objects, the TMO-based object group we suggested provides the functions which register and withdraw the solver objects as a group member to an arbitrary object group, and also provides the functions which insert and delete the access rights of server objects from clients. Also, our model was designed and implemented to support the appropriate object selection and dynamic binding service for a single TMO as well as the duplicated TMOs, and to support the real-time scheduling service for the clients which are requesting the service. Finally, we developed the Defence System against Invading Enemy Planes(DSIEP) simulator as a practical example of distributed real-time application by applying our model, and evaluated the adaptability of distributed service strategies for the group components and the executability of real-time services that the TMO-based object group model provides.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.30 no.2
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• pp.160-168
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• 2019

In this study, we propose a verification method for a planar-phased array radar system using a near-field beam focusing(NFBF) test method. We then confirmed the validity of the results. The proposed method can be used to verify a radar system in the near-field range of twice the antenna aperture size, and this is done in the same manner as the field system performance test conducted in a non-outdoor electromagnetic anechoic chamber. The test configuration and procedure for verifying the NFBF using near-field energies were reviewed. In addition, the phase compensation values of additional individual channels were quantified through mathematical verification of the beam-steered NFBF test. Based on a theoretical verification, the actual NFBF test was performed and the validity of the test method was confirmed through comparison with ideal analytical results.

• Journal of the Korean Society of Floral Art and Design
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• no.43
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• pp.81-100
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• 2020

Since sustainable packaging of flower basket designs that are sold from florist shops is needed for both the seller and the buyer, studying of second packaging of flower basket design has begun. In this study, based on the survey that has been done in 2019, and the analysis of the interview that has been done in 2020, the suggestion of sustainable packaging development is the purpose. The definition of flower basket design was done and surveys of the status of domestic flower basket designs' second packaging were done in accordance with the type of basket which is an object, transportation, and characteristic of a florist shop. For sustainable packaging, based on physical theory, second packaging which depends on the packaging that includes design factor, transportation final destination has to be different. The factors to be considered as sustainable packaging are the quality of opaque paper, the necessity of first packaging, packaging structure that can fix an object, the form of second packaging influenced by types of transportation. Suggestions for packaging development included new materials for first packaging, eco-friendly objects that can be recycled and reused, structural packaging design, standardization and variability of packaging, protection of floristry which is the fundamental purpose of packaging, and brand advertisement effect. Based on the result of this study further designs of packaging will be commercialized. This study is significant for serving the opportunity of new packaging design for futuristic floristry that fit for unmanned system and studying of categories of products.