• Proceedings of the Korea Society of Design Studies Conference
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• 2004.05a
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• pp.170-171
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• 2004

• Journal of Korean Society of Water and Wastewater
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• v.29 no.3
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• pp.293-303
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• 2015

Optimal design of the water supply pipe network aims to minimize construction cost while satisfying the required hydraulic constraints such as the minimum and maximum pressures, and velocity. Since considering one single design factor (i.e., cost) is very vulnerable for including future conditions and cannot satisfy operator's needs, various design factors should be considered. Hence, this study presents three kinds of design factors (i.e., minimizing construction cost, maximizing reliability, and surplus head) to perform multi-objective optimization design. Harmony Search (HS) Algorithm is used as an optimization technique. As well-known benchmark networks, Hanoi network and Gyeonggi-do P city real world network are used to verify the applicability of the proposed model. In addition, the proposed multi-objective model is also applied to a real water distribution networks and the optimization results were statistically analyzed. The results of the optimal design for the benchmark and real networks indicated much better performance compared to those of existing designs and the other approach (i.e., Genetic Algorithm) in terms of cost and reliability, cost, and surplus head. As a result, this study is expected to contribute for the efficient design of water distribution networks.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.1
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• pp.1-11
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• 2018

In various engineering fields, determining the appropriate parameter set is a cumbersome and difficult task when solving optimization problems. Despite the appropriate parameter setting through parameter sensitivity analysis, there are limits to evaluating whether the parameters are appropriate for all optimization problems. For this reason, kinds of a Self-adaptive Harmony searches have been developed to solve various engineering problems by the appropriate setting of algorithm's own parameters according to the problem. In this study, various types of Self-adaptive Harmony searches were investigated and the characteristics of optimization were categorized. Six algorithms with a differentiation of optimization process were applied and compared with not only the mathematical optimization problem, but also the engineering problem, which has been applied widely in the algorithm performance comparisons. The performance of each algorithm was compared, and the statistical performance indicators were used to evaluate the application results quantitatively.

• Culinary science and hospitality research
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• v.23 no.7
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• pp.140-148
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• 2017

The purpose of this study was to provide basic data for the development of stir-fried rice cake (Tteok-bokki) products which are suitable for the organoleptic property of Chinese people based on the analysis results of the important considerations in choosing stir-fried rice cake (Tteok-bokki) for Chinese students. As a result of analysis, it was found that the texture of stir-fried rice cake (Tteok-bokki), smell, the harmony of the rice cake and sauce, the harmony of the rice cake and ingredients, the plate of food, the size of rice cake, the shape of rice cake, the color of sauce, and the sanitary condition of the food, ingredients, and cookware have significant influence. As a result of the IPA analysis, the texture of food, the sanitary condition of the food, ingredients, cookware, and a cook were included in the first quadrant, which indicates that it is batter to maintain a good quality. Smell of stir-fried rice cake (Tteok-bokki), temperature, rice cake and ingredients were included in the second quadrant, which suggests that the importance is high, but the satisfaction level is low.

• Korean Journal of Agricultural Science
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• v.44 no.3
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• pp.440-450
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• 2017

With the increasing number of migrants from urban to rural areas in Korea, Population inflow policies have helped increase the number of urban-to-rural migrants which has eased the labor shortage in rural areas.. But, there are new problems in rural areas caused by the "perception gap in regard to harmony, awareness, pride and opportunity to meet" between the urban-to-rural migrants and the original residents. The purpose of this study was to analyze the factors affecting the harmony between the urban-to-rural migrants and residents. A survey was conducted among 70 people living in Hongseong-gun in Chungcheongnam-do with an aim to come up with proposals for policies that can help resolve these social problems in the mutual understanding of urban-to-rural migrants and original residents. An ordered logit model was used to analyze the effect of the perception gap between the urban-to-rural migrants and the rural residents. The result of the survey showed that most of the urban-to-rural migrants believed that the increase in urban-to-rural migrants did not bring harmony to rural areas because of the perception gap. Based on these results, we concluded that the following three policy alternatives would be needed: first, development of urban-to-rural migrant education programs for relatively young men; second, a policy supporting various forms of community gathering in a rural society; third, diversification of urban-to-rural migrant education programs such as communication program and conflict management program, etc.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.10a
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• pp.235-236
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• 2005

A medical college is faculty which performs frequent experiments and holds lots of seminars for these reasons, this place was designed to exchange its concentration, taking its spatial psychology convenience and its functions into consideration. This space has been built up as the technological and multi-functional space to encourage it to accomplish special functions required by each of facilities, such as the president room, a main center of administration in the medical college, an audience chamber, an attached room, the room for alumni, preventive medicine and Micro biological diseases, a legal medicine lecture room, the room for basic medical science and a conference room.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.28 no.4
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• pp.105-111
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• 2010

This research aims to grasp the main factors of the image of Xi'an Ming City Wall Park and the harmony level with city walls and moat based on citizen's consciousness to improve the future design, field survey and the POE method are employed to analyze the image factor and harmony level of the Xi'an Ming City Wall Park. In the literature survey, the related materials were collected to obtain the most useful information for references, POE study of the Xi'an Ming City Wall Park were conducted. The instrument for survey is a questionnaire that includes a portion of questions regarding Xi'an Ming City Wall Park and the design intention of the surroundings of city wall. Data were analyzed using the Statistical Package for the Social Science (SPSS17.0 for Windows). Multiple regression analysis, and correlation analysis were employed along with the use of general descriptive data analysis. The factor analysis of the image of Xi'an Ming City Wall Park identified three factors, "environment" factor, "convenience" factor, "cultural aesthetics" factor, and the most important factor is "environment" factor. Among 14 landscape elements, paving, garden architectures and entrance spaces were identified as important variables which significantly affect the overall level of harmony with the city wall, and the space for rest; waterscape and paving were identified as important variables which significantly affect the overall level of harmony with the moat.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.304-315
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• 2018

Harmony Search (HS) is a recently developed metaheuristic algorithm that is widely known to many researchers. However, due to the increasing complexity of optimization problems, the optimal solution cannot be efficiently found by HS. To overcome this problem, there have been many studies that have improved the performance of HS by modifying the parameter settings and incorporating other metaheuristic algorithms. In this study, Copycat HS (CcHS) is suggested, which improves the parameter setting method and the performance of searching for the optimal solution. To verify the performance of CcHS, the results were compared to those of HS variants with a set of well-known mathematical benchmark problems. The effectiveness of CcHS was proven by finding final solutions that are closer to the global optimum than other algorithms in all problems. To analyze the applicability of CcHS to engineering optimization problems, it was applied to a design problem for Water Distribution Systems (WDS), which is widely applied in previous research. As a result, CcHS proposed the minimum design cost, which was 21.91% cheaper than the cost suggested by simple HS.

• Journal of Service Research and Studies
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• v.10 no.4
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• pp.1-19
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• 2020

It is very important to explore new management theories that are better in line with the modern service economy era in order to cement the foundation of the service industry in this rapidly changing business environment. This study examined the relationship between service essentials and job performance by service industry, and verified and discussed in depth whether there is difference between service essentials and job performance by demographic characteristics. The results of this study are as follows: First, an analysis of the effect of service essentials on job performance found the interaction, horizontality and harmony of service essentials had positive effects on performance, but the relationship didn't. Next, an analysis of the effect of service essentials on job performance by representative service industry showed that in the transportation industry, interaction and harmony had positive effects on performance, but relationship and horizontality didn't affect performance. In the financial and insurance industries, horizontality and interaction had positive effects on performance, but harmony and relationship didn't affect performance. Accommodation and food industries, interaction, horizontality and harmony had positive effects on performance, but relationship didn't affect performance. In the medical and health industries, interaction and horizontality had positive effects on performance, but relationship and harmony didn't affect performance. In terms of demographic characteristics, in the financial and insurance industries, interaction and harmony showed a significant difference by age, but only horizontality showed a difference by the number of years of service. In the accommodation and food industries, only horizontality showed a difference depending on the number of years of service. In the medical and health industries, relationship, horizontality and harmony showed a difference depending on the number of years of service, but only horizontality showed a significant difference by marital status. In the future, comparative national studies are needed for all industrial groups.

• Journal of The Korean Association For Science Education
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• v.19 no.2
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• pp.204-216
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• 1999

A value can be placed on the integrated science curriculum in terms of producing an insight into solving the routine problem. From such a point of view, the comprehensive concepts which explain the extensive natural phenomena were defined as the integrated themes in this study, and the contents of the integrated science curriculum were developed, as the understanding of the contents focused on the integrated theme enables us to be productive and have an insight. Through analyzing teaching materials, programs and curriculums in relation to the integrated science, five concepts of system, interaction, harmony and balance, structure and function, and circulation were established as the integrated themes, and the nature of each integrated theme was examined. Next, in accordance with the integrated theme, the content of the integrated science curriculum,which are deeper in aspect of the integration level than that of the current science of middle school, were developed. The content of the integrated science curriculum which was proposed in this study is of great significance. in that they provide new perspectives related to our current science curriculum.