• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 1999.11a
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• pp.119-124
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• 1999

A selection methodology of liquid levelmeters, especially, level sensors in non-nuclear category, to be installed in nuclear energy facilities is developed using linguistic fuzzy approaches such as fully-linguistic and semi-linguistic methods. Depending on defuzzification techniques, the linguistic fuzzy methodology leads to either linguistic (exactly, fully-linguistic) or cardinal (i.e., semi-linguistic) evaluation. For the linguistic method, for each alternative, fuzzy preference index is converted to linguistic utility value by means of a similarity measure determining the degree of similarity between fuzzy index and linguistic ratings. For the cardinal method, the index is translated to cardinal overall utility value. According to these values, alternatives of interest are linguistically or numerically evaluated and a suitable alternative can be selected. Under given selection criteria, the suitable selections out of some liquid levelmeters for nuclear facilities are dealt with using the linguistic fuzzy methodology proposed. Then, linguistic fuzzy evaluation results are compared with qualitative result available in the literature. It is found that as to a suitable option the linguistic fuzzy selection is in agreement with the qualitative selection. Additionally, the comparative study shows that the fully-linguistic method using adequate scale system facilitates linguistic interpretation regarding evaluation results.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.18 no.11
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• pp.859-866
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• 2006

This paper presents the vapor-liquid equilibrium (VLE) data measured for carbon dioxide and propane mixtures. Their mixtures were considered as promising alternative refrigerants due to good thermophysical properties and negligible environmental impact. The isothermal VLE data were measured at eight temperatures ranging from 253.15 to 323.15 K in the circulation type equipment with a view cell. The binary system was found to be a zeotropic mixture in the tested temperature range and could be correlated with sufficient accuracy by using the Peng-Robinson equation of state (PR EoS) with the van der Waals one fluid mixing rule. A comparison with published experimental VLE data has been carried out by means of the PR equation of state. In addition, the phase behaviors of carbon dioxide and propane mixtures were analyzed based on the measured VLE data.

• Journal of the Korea Society of Computer and Information
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• v.24 no.3
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• pp.65-75
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• 2019

Non-Functional Requirements (NFR) play a crucial role during the software development process. Currently, NFRs are considered more important than Functional Requirements and can determine the success of a software system. NFRs can be very complicated to understand due to their subjective manner and especially their conflicting nature. Self-adaptive systems (SAS) are operating in dynamically changing environment. Furthermore, the configuration of the SAS systems is dynamically changing according to the current systems context. This means that the configuration that manages the trade-off between NFRs in this context may not be suitable in another. This is because the NFRs satisfaction is based on a per-context basis. Therefore, one context configuration to satisfy one NFR may produce a conflict with another NFR. Furthermore, current approaches managing Non-Functional Requirements trade-off stops managing them during the system runtime which of concern. To solve this, we propose fragmentizing the NFRs and their alternative solutions in form of Multi-entity Bayesian network fragments. Consequently, when changes occur, our system creates a situation specific Bayesian network to measure the impact of the system's conditions and environmental changes on the NFRs satisfaction. Moreover, it dynamically decides which alternative solution is suitable for the current situation.

• SUVANNABHUMI
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• v.13 no.1
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• pp.7-33
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• 2021

With a view to contributing to the epistemological and methodological debates in Southeast Asian Studies, the aim of this paper is to examine critically the epistemic concepts and approaches in the social sciences and then to seek an epistemic reflexivity and its potential methodological applications to Southeast Asian Studies. Although the field of social sciences has attempted to search for a means of tackling the ontological and epistemological dilemmas in its major paradigms, Southeast Asian Studies still demands a more 'actor-centered' epistemic account of reflexive interaction between actors and social structures. Bearing in mind the need for a more 'actor-centered' epistemic approach, this paper continues to discuss the 'epistemic reflexivity' in the social sciences and its potential applications to Southeast Asian Studies. In this paper, I will consider 'epistemic reflexivity' as an alternative methodological orientation. It emerges as interlinked with the ontological standpoint of what is called 'reflexive approaches' and its application to the detailed 'reflexive methodology' which I am proposing in this paper. In doing so, this paper discusses the autobiographical experiences of the author arising from his ethnographic field research in North Sulawesi, Indonesia and their implication for a reflexive methodology in Southeast Asian Studies. In conclusion, the paper argues that we need a 'more actor-centered' epistemic framework to compensate for the epistemological and methodological dilemmas in the social sciences and the alternative framework will equip Southeast Asian Studies with a reflexive methodology relevant to the life-dynamics of the social world in the process of developing its inquiries, methodological technics, analysis, and validation.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.10a
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• pp.233-236
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• 2014

The purpose of this study is for the students who are naturally diverse in personality and behavior in the alternative school to examine the effect of the computer subject achievement and how to increase the student's interest in learning by means of the implementation of Howard Gardener, the Multiple-Intelligence Hypothesis. To verify this study, two groups of sophomore students from an Alternative High School located in Hwasung : The Experimental group consisted of 20 students who would participate in the Computer Science program by learning or applying new skills, based on the Multiple Intelligence Hypothesis. The Comparison Group consisted of 19 students who would follow the standardized Computer Science teaching and lesson plan. During five weeks, the multiple-Intelligence effect was executed in the search groups comparing the differences of the pre-test and pro-test. Pro-test showed following results: Firstly, the experiment search group showed a higher significant improvement in the subject achievement, compared to the comparison group. Secondly, the experiment search group showed a much higher increase in the interest of learning, compared to the comparison group. Thirdly, the experiment search group did not show any differences of the social development compared to the comparison group.

• Korean Journal of Environment and Ecology
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• v.33 no.4
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• pp.408-421
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• 2019

This study estimated and analyzed the incremental profits to compare the imported buff-tailed bumblebees, Bombus terrestris, and their pollination alternatives. A result of the analysis showed that the incremental profit, which is defined as the sales revenue minus the common production cost, was higher when using pollinator insects than when using the artificial pollination and that the incremental costs were lower when using domestic bumblebees or artificial pollination than when using imported bumblebees or honeybees. The incremental profits of each alternative were 46,801 million won for imported bumblebees, 47,170 million won for domestic bumblebees, 46,975 million won for honeybees, and 29,839 million won for artificial pollination. The incremental profit means the accounting profit that can be realized from each alternative. However, not all of the accounting profits can be attributed to pollen-mediated alternatives since they include potential costs such as imputed rent or normal profits. Considering the opportunity costs, which are the potential costs, it appears that the alternative of using imported bumblebees can lead to an economic loss. It means that fruit and vegetable farmers can expect additional economic profits if they choose other alternatives instead of using imported bumblebees.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.7
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• pp.4969-4976
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• 2015

South Korea has more than two-thirds of the land consists of mountainous terrain. It is necessary to enable the recycling of mountain tourism policy to allow people to use. This paper studied Bukhansan where there seems to have the most economical efficiency and effectiveness as an alternative means of transportation applying user'swillingnessto pay by age based upon the Study on Introduction Bukhansan Mountain Railway which was progressed as part of the balanced national development and railway promotion strategy. The Analyisis results are shown that cost-benefit ratio is Lim 0.73 and rack & pinion 0.8. The rack-and-pinion method is selected as an applicable alternative. If the new technologies are developed and made part of the construction of the tunnel route was judged as possible as an alternative way LIM

• Journal of the Korea Convergence Society
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• v.11 no.6
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• pp.51-57
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• 2020

Children with language developmental disabilities often struggle through their lives from a lot of challenges in everyday life and social activities. They're often easily deprived of the opportunity to engage in social activities, because they find difficulty in understanding or using language, a core means of communication. With regard to this issue, AAC(Augmentative and Alternative Communication) can be an effective communication tool for children who are suffering from language disabilities. In this paper, we propose a deep learning-based AI service to make full use of the pictogram as an AAC tool for children with language developmental disabilities to improve not only the ability to interact with others but the capacity to understand language. Using this service, we strive to help these children to more effectively communicate their intention or desire and enhance the quality of life.

• Journal of Korean Library and Information Science Society
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• v.45 no.2
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• pp.261-281
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• 2014

In light of the recent advancement in networking and information technology, the direct information request through website has increasingly proven to be the preferred means over visiting physical archives. Thus, the proper utilization of a communication tool capable of sufficiently capturing user feedback and requests is an absolute necessity. This paper examines the availability and utilization of alternative user participatory communication tools in government websites with particular focus on the archives in South Korea, the United States, the United Kingdom, Canada, China, and Japan. In assessing the use of alternative user participatory communication tools in these archives, we examined the availability of communication mediums other than the online forums, email, and telephone with particular focus on social media tools that may offer a degree of familiarity for the user. Our research indicates that the most frequently utilized social media tool is Facebook while the archive offering the greatest variety of alternative user participatory communication tools was the United States archive.

• Korean Journal of Child Studies
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• v.2
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• pp.83-103
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• 1981

1. Outline of the Study A boom of baby hotels is taking place in Japan. Baby hotel means day care centers that renders services day and night for babies of working mothers. These baby hotels are thriving because many mothers welcome the system because of their needs. However, accidents occurred in a row recently and therefore baby hotel has suddenly become a social issue. According to the ministry of health welfare, there are 587 baby hotels in Japan accommodating about 10,000 children and they are mostly located around amusement centers. The reasons that these baby hotels thrive in spite of the fact that there are 22,000 day care centers in Japan are : (1) shortage of day care centers compared to the needs (2) most centers do not take in babies below 1 year. This study aims to describe the present status of the baby hotels and the background of the phenomena that made it possible for them to thrive with no permission from the government. This study mostly deals with the phenomena in Tokyo. 2. Day Care Policy in Japan and the Problems of Baby Hotels The present review deals with the problems from the following 6 dementions. (1) the shortage of day care centers (2) inadequate system for the care of babies (3) inadequate daily hours of day care centers (4) Unflexable enrollment system of day care centers (5) imperfect enfollment process & guidelines (6) lack of alternative institutions 3. Result The Ministry of Health & Welfare affered the following ways to cape with the problems of baby hotels : (1) restraint of the baby hotels (2) utilization of existing day care centers for the care of babies. In my opinion, these suggestions seem too superficial in solving the problems. I would rather suggest that the Japanese government review the whole system of child welfare administration. The Child welfare Law of Japan made a clear statement in its article 24 that, "if day care centers are not available, alternative institution for proper care of children must be sought for." My suggestions for the alternative care are : (1) public nursing rooms (2) family day care (3) extention of kindergarten hours (4) foster family care.