• Nuclear Engineering and Technology
• /
• v.55 no.6
• /
• pp.1974-1987
• /
• 2023

The load-following operation of small modular reactors (SMRs) requires accurate prediction of transient behaviors that can occur in the balance of plants (BOP) and the nuclear steam supply system (NSSS). However, 1-D thermal-hydraulics analysis codes developed for safety and performance analysis have conventionally excluded the BOP from the simulation by assuming ideal boundary conditions for the main steam and feed water (MS/FW) systems, i.e., an open loop. In this study, we introduced a lumped model of BOP fluid system and coupled it with NSSS without any ideal boundary conditions, i.e., in a closed loop. Various methods for coupling boundary conditions at MS/FW were tested to validate their combination in terms of minimizing numerical instability, which mainly arises from the coupled boundaries. The method exhibiting the best performance was selected and applied to a transient simulation of an integrated NSSS and BOP system of a SMART. For a transient event with core power change of 100-20-100%, the simulation exhibited numerical stability throughout the system without any significant perturbation of thermal-hydraulic parameters. Thus, the introduced boundary-condition coupling method and BOP fluid system model can expectedly be employed for the transient simulation and performance analysis of SMRs requiring daily load-following operations.

• Knowledge Management Research
• /
• v.25 no.1
• /
• pp.111-134
• /
• 2024

Cosmetics brands are increasingly offering "multi-purpose" products that serve multiple functions at once, such as an eye cream that could also be used as a lip moisturizer. Yet, there is little research on consumers' perceptions of multi-purpose products and the brands that offer these products. This research examines the impact of consumers' own theory of beauty. We find that endorsing a strong incremental (vs. entity) theory of beauty (i.e., believing that one's beauty is changeable through one's effort rather than innate and unchangeable) reduces consumers' preferences for multi-purpose products, particularly among those who are highly appearance oriented. These consumers' reduced evaluation of multi-purpose products also spills over to their overall brand evaluation. The findings suggest that brand managers should consider consumers' implicit theory of beauty and product preferences when managing product knowledge.

• Journal of the Korean Institute of Rural Architecture
• /
• v.26 no.3
• /
• pp.37-44
• /
• 2024

Currently, convergence research is being conducted in various research facilities in Korea, but it is true that there are very few multi-purpose convergence research facilities that can support such convergence research in universities, which are the most basic research group. In the case of multi-purpose convergence research facilities installed in universities, human resources from more diverse fields gather to conduct various studies than general research facilities, so the facilities should be planned to reflect these characteristics, and the space should be planned to promote human exchanges. The basic guidelines for planning multipurpose convergence research facilities installed in universities are as follows. First, multi-purpose convergence facilities in universities should be based on the habitability and convenience of users who use the facilities, and functionality, promotion of human resource exchange, symbolism, and eco-friendliness should be set as major planning factors. Second, in the case of internal planning, it is necessary to secure a efficient research and public space, a short and clear movement and evacuation plan, a future-oriented image and symbolism, an eco-friendly facility plan, efficiency through zoning and modularization, and future expansion. Third, in the case of size setting, it is appropriate to plan around 18,000m² of total floor area, and considered safe to plan around 45% of research & education area, 6% of support area, 5% of convenience area, 4% of exhibition area, and 40% of public areas by use, but additional reviews should be conducted according to the situation of each university or local region.

• Journal of Families and Better Life
• /
• v.11 no.2
• /
• pp.156-168
• /
• 1993

This paper has two purpose. The primary purpose is to investigate how the middle ages women of Korea describe their own masculinity femininity and gender role identity. Secondary purpose is to find out how the masculine and the feminine are related to socio demographic feature and physical symptom. The questionaire sheets of 327 use from middle aged woman of 39 years to 59 years old with their last child is more than 10 years old. The summerized results of study are as follows: 1) The overall tendency in gender role identity of middle aged women. the undifferentiated type(36.70%) was the most and have shown the androgynous type(30.58%) by the next. 2) The employed middle aged women inducated higher masculinity than the unemployed middle aged women and felt the lesser physical symptoms conciousness. In case of occupation of husband is higher social status the femininity was higher the others. and in the group has not daughter or shorter marital period the femininity was higher.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.20 no.44
• /
• pp.343-356
• /
• 1997

Many empiric research findings have supported that the characteristics and strength of Organization Culture(OC) is closely related with organizational performance(absenteeism, job satisfaction, cohesiveness and turnover etc.). The first purpose of this study is to review the relationship between OC and turnover as a performance factor, and the second and primary purpose is to test the moderating effects of personal factors(sex, educational career, rank, occupation, marital status, job switching, age, company tenure and job tenure) between OC and turnover. For the analytical purpose of this article, OC type is categorized as Maintainable Culture(MC), Affiliation Culture(AC), Progressive Culture(PC) and Rational Culture(RC) based on Quinn(1985). The empirical results are as followings: Moderating effects are found in sex(with MC and RC), educational career(with MC, PC and RC), job switching(with MC and RC).

• Korean Journal of Adult Nursing
• /
• v.21 no.6
• /
• pp.603-616
• /
• 2009

Purpose: The purpose of this study was to examine the subjective opinions of first-generation Korean-Americans about survival. Methods: The Q-methodology which provides a method of analyzing the subjectivity of each item was used. The 34 selected Q-statements from each of 38 subjects were classified into a shape of normal distribution using a 9 point scale. The collected data was analyzed using a QUANL/WIN program. Results: Four types of survival attitudes from 38 first-generation Korean-Americans were identified. Type I was a satisfaction type based on belief, Type II was an effort type based on purpose, Type III was an isolation type based on ethnicity, and Type IV was a compromise type based on adaptation. Results of this study indicate that approaches to a minority's survival strategies need to be differentiated taking this typology and various subject characteristics into account. Conclusion: This information may provide a basic understanding for healthcare providers who work with first-generation Korean-Americans.

• 제어로봇시스템학회:학술대회논문집
• /
• 2003.10a
• /
• pp.1976-1981
• /
• 2003

Except a desktop computer and workstation, an embedded system is a system containing microprocessors. While a desktop computer and a workstation are designed for a general purpose, an embedded system is designed for a dedicated purpose. Thus, an embedded system must meet some constraints such as low power consumption, low cost, small size, real-time, or user-defined ones. A simple and low cost embedded system may be able to be designed without using embedded operating systems (OS). However, considered design time and effort, some embedded system had better be designed with using embedded OS. Under given constraints and purpose of some embedded systems, one embedded OS can save more time, cost, and effort in designing those embedded systems than others. This paper compares four embedded OSs, Windows CE, Embedded Linux, pSOS, and uC/OS. It analyzes several issues of embedded OS such as process scheduling, inter-process communication (IPC), memory management, and network support. Also, it describes the product of each embedded OS.

• International Commerce and Information Review
• /
• v.11 no.3
• /
• pp.125-144
• /
• 2009

The purpose of this study is to research the investment environment of Vietnam and analyze the actual investment state of Korean enterprises in Vietnam and seek for the points at issue. In general, the investment environment in Vietnam shows both a positive side and negative side. However Vietnamese market is a attractive one as ever for direct investment of Korean enterprises considering their constant economy growth, investment increase of foreign company for Vietnam, China risk. And the point at issue in investment of Korean Enterprises is as follows. That is, inclining to manufacturing, preference of independence investment, small-sized investment by small and medium enterprises, preference of greenfield investment, restricted purpose of investment, insufficiency of infrastructure for logistics, electric power, legal system. The results of the study indicate mainly that the investment of Korean enterprise into Vietnam needs a switchover of the third service trade-tertiary industry, collaboration with Vietnamese enterprise through joint venture investment, a large-scale investment for Vietnam domestic market and neighboring countries' market, practical use of M&A with existing Vietnamese enterprise and diverse purpose for investment.

• Journal of Korean Academy of Nursing
• /
• v.38 no.1
• /
• pp.111-121
• /
• 2008

Purpose: The purpose of this study was to analyze attitudes toward a successful life of students majoring in nursing science. Method: The Q-methodology which provides a method of analyzing the subjectivity of each items was used. The 32 selected Q-statements from each of 36 subjects were classified into a shape of normal distribution using a 9 point scale. The collected data was analyzed using a QUANL PC program. Result: Four types of successful life attitudes for research subjects in nursing science were identified. Type I is purpose achievement type, Type II is calling fullness type, Type III is balance maintenance type, and Type IV is happiness eagerness type. Conclusion: The results of the study indicate that different approaches to nursing professional education programs are recommended based on the four types of successful life attitudes.

• Culinary science and hospitality research
• /
• v.12 no.1 s.28
• /
• pp.51-67
• /
• 2006

The purpose of this study is to examine the correlation between differentiation strategy of customer’s satisfaction and the effects on performance in family restaurants. Above all, looking into a device to take an internal competitive domination factor of family restaurants is the core purpose of this study. To achieve the purpose, a survey was conducted to 278 customers of family restaurants in Seoul. The result of this survey is as follows. First, the interior of family restaurants and responsibility of their employees had an effect on customer’s satisfaction. Secondly, menu/atmosphere satisfaction and employee’s appearance influenced quality performance of restaurants. In searching information on restaurants, reference group and visiting experience were highly recommended, leading to the importance of word of mouth.