• 상하수도학회지
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• 제27권6호
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• pp.711-721
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• 2013

Optimal operation of a combined sewer network with distributed storage facilities aims to use the whole retention capacity of all reservoirs efficiently before overflows take place somewhere in the considered network system. An efficient real-time network control (RTNC) strategy has been emerging as an attractive approach for reducing substantially the overflows from a sewer network compared to the conventional fixed or manually adjusted gate setting method, but the related concrete framework for RTC development has not been throughly introduced so far. The main goal of this study is to give a detailed description of the RTNC systems via reviewing several guidelines published abroad, and finally to suggest methods for the proper application of RTNC on distributed storage facilities. Especially, this study is focused on emphasizing the importance of hierarchical structure of RTNC system that consists of three control layers (management, global control and local control). Further, with regard to the global control layer which is responsible for the central overall network control, the wide-ranging details of two components (adaption and optimization layers) are also presented. This study can provide the valuable basis for the RTNC implementation in the particular sewer network with distributed multiple storage facilities.

• 한국산업정보학회논문지
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• 제11권5호
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• pp.198-206
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• 2006

급변하는 기업환경에서 사전적이고 능동적으로 대응하는 기업만이 생존한다는 것은 어느 시대이든 적용되는 명제라고 할 수 있다. 전사적 자원관리(Enterprise Resource Planning: ERP) 시스템은 이제 기업의 전략적 필수요건이 되었다. 그러나 여전히 국내 중소기업에서는 ERP시스템의 성공적인 구현을 위한 구축 전략에 대한 현실적 지침이 필요하다. 특히 ERP시스템 도입을 위한 프로세스 관련 문제의 규명과 비즈니스 목표의 정립에서 더욱 그러하다. 본 사례는 2000년 삼성계열사로 창업한 정보보호 전문업체인 시큐아이닷컴의 ERP시스템 구축사례를 통해 전략적 관점에서 실질적인 중소기업의 정보인프라 구축과 시스템 경영의 구현과정을 제시함으로써 향후 국내 중소기업의 ERP시스템의 신규 구축 및 업그레이드 과정에 실질적인 가이드라인을 제시하고자 한다.

• 한국항공운항학회지
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• 제21권1호
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• pp.80-86
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• 2013

In an effort to decrease aviation accident worldwide, development of aviation safety management has been sought through aviation index and standardization, both by establishing SMS(Safety Management System). It also needs to be done in the domestic. both study on SMS which ICAO recommends and setting the top priority safety goal, each differently classified by nations. Accordingly, defining safety index and developing continuous monitoring approach. Aircraft accident reporting system in Air Force does not operate in a open approach method due to its uniqueness related to mission achievement. Therefore, limits of utilizing the recent worldwide aircraft data sharing and analyzing results to prevent accident is inevitable. This paper introduces an overview of ECCAIRS 5 which become the standard for the recent worldwide aviation safety reporting and data exchange system. Also using ECCAIRS 5, aircraft accident cases of the Air Force are classified such as accident type, year, month, occurrence category, and flight phase. The result of the study will provide a guide line for utilizing the civil system in prevention of future military aviation accidents.

• 공학교육연구
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• 제16권5호
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• pp.24-35
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• 2013

This study aims to explore self-directed learning strategies of high academic achievers majoring in engineering. The research participants were 21 fourth-year students who had attained the first or second highest cumulative grade point average in each department during the past three-year and were asked to write an essay on "my successful learning methods or techniques." The essays were analyzed by theme analysis method which is one of the qualitative methods to extract the self-directed learning strategies used by high performing students. According to the results of this study, the self-directed learning strategies of excellent students could be categorized into fundamental strategies to induce self-directed learning, preparatory strategies, implementation strategies and management strategies for marinating self-directed learning. Detail information on each category is as follow: 1) fundamental strategies refer to positive and pleasant mind, academic confidence and effort attribution, 2) preparatory strategies refer to concrete and challenging goal setting, establishment of learning strategies adjusted courses characteristics and practical learning planning, 3) implementation strategies refer to intensive learning in class, knowledge exploration, knowledge acquisition, social networking and exhaustive preparation for exams and 4) management strategies refer to time management and learning environment management.

• Management Science and Financial Engineering
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• 제13권1호
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• pp.73-91
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• 2007

We investigate factors that influence the choice of high-share brands(HSBs) vs. low-share brands(LSBs) among various product and consumer characteristics related to brand-share perceptions. Specifically, using 8 product categories varying in terms of purchase decision involvement, we show how the influencing factors vary across the categories. At the general level that cover all the 8 categories, our hierarchical Bayesian regressions analysis shows that factors that favor high-share brands are purchase decision involvement, search goods, experience goods, price-quality relationship, positive network externalities, and price-prestige beliefs. Conversely, consumers who value variety seeking and need for uniqueness favor low-share brands. The effects of these factors, however, vary across product categories. The identification of these characteristics can help brand managers establish a more effective brand-share strategy in such areas as setting an optimal market share goal, extending a brand, and developing ad copy. Furthermore, our consumer segmentation analysis demonstrates the general market has two distinct segments - (1) a segment composed of HSB buyers(86%) and (2) a segment composed of LSB buyers(14%). The two segments are also shown to have different significant factors that explain their brand choice. Our segmentation analysis can help marketers establish a marketing strategy that targets a specific segment of interest.

• 식품보건융합연구
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• 제6권4호
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• pp.7-9
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• 2020

The purpose of this study is to prepare a systematic implementation of safety management for adult's foods through recommendations and guidelines for nutrition and hygiene standards for food quality certification system preferred by adults. To achieve this goal, the study studied the current status of adult preferred foods sold near the university, elicited the risks and problems of such foods, and selected nutritional and hygiene risk factors from those foods. To provide quality certification standards and guidelines for adult food preferences, this study looked at practical examples of relevant domestic and international policies and standards. The nutritional standards for food quality certification for sugars, fats, sodium, additive microorganisms and pathogenic bacteria, which are nutrients that can impair health when consumed in large quantities, and dietary standards limited to less than 100 kcal per serving were studied. One excessive amount of caffeine is reported to cause loss of calcium and potassium in the body, suggesting that if an adult is continuously exposed to high concentrations of caffeine, it could lead to imbalance in the resolution in the body and be flavored by growth and foot moon. Therefore, it is necessary to prepare an individual banner based on feasible food types, which is coordinated with the nutritional aspects that fit the purpose of presenting right amount, safe food through the quality certification system for adult's favorite foods and practical aspects that can induce companies' response and voluntary impacting efforts.

• 영어어문교육
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• 제7권1호
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• pp.179-208
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• 2001

Using literary materials as resources for English learning rather than an object of literary study can be a genuine tool for the students to learn English in the form of oral and written communication. This case study treated the applications of a whole text to the overall course divided into pre-reading activities, while-reading activities, and post-reading activities and the applications of some partial passages extracted from various texts to teaching objectives with many levels of difficulty. This study found that literary texts could be good materials to teach the target language in EFL setting. The English-speaking students with little linguistic competence as a foreign language may be limited in learning English at first, but soon they can accelerate their linguistic competence by reinforcing the literary competence through the literary texts. To achieve effectively a desired goal through the use of literary texts as resources for language development several concrete techniques should be introduced: teacher-guided question strategies laying a central emphasis on the text itself, a problem-solving ability through student-centered activities, process-based and open-ended activities should be presented in a variety of ways using many appropriate activities according to teaching procedure with a careful selection of the texts.

• Journal of Korean Biological Nursing Science
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• 제17권2호
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• pp.89-96
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• 2015

Purpose: Despite well-known benefits of walking on cardiovascular health, no structured walking exercise program has been formally tested on elderly Korean immigrants (EKIs). This pilot randomized controlled trial study assessed the effect of a walking program on walking behavior (pedometer steps count), stress (cortisol), depressive symptoms (CESD-10), and cardiovascular disease biomarkers (hs-CRP and fibrinogen) via venipuncture in EKIs. Methods: Seventy EKIs recruited from a Korean community were randomly assigned to a 12-week walking group or control group in a 3:2 ratio. The working program included a pedometer, buddy, monthly coffee card, weekly call for goal setting, and physical activity consultation. Walking group EKIs maintained the Centers for Disease Control and Prevention recommended exercise guidelines and good mental health status over 12 weeks. Results: There was no significant difference in the outcomes between control and walking groups. Conclusion: Social networking with Koreans in the senior center and church from a well-established Korean community might have positive effects on mental health.

• 콘크리트학회논문집
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• 제23권6호
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• pp.757-763
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• 2011

콘크리트의 효율적인 조기강도 확보를 위해 시멘트의 성능 향상에 주안점을 두고 연구를 진행하였다. 이 연구는 선행 연구인 시멘트 생산 공정 중 부수적으로 발생되는 크기가 작은 시멘트(이하 미립자 시멘트, FC라 함)를 이용하는 콘크리트의 조기강도 발현 특성 연구에 대한 후속 연구로서 내구성 검토를 실시하였다. 실험 결과 굳지 않은 콘크리트에서는 각 배합별 목표 범위를 모두 만족하는 것으로 나타났고, 미립자 시멘트를 혼입하였을 때 응결시간은 촉진되었고 압축강도는 증진되었으며 수화열은 유사한 수준인 것으로 평가되었다. 특히, 내구성 측면에서는 미립자 시멘트 혼입 유 에 따라 모든 실험 항목에서 유사한 수준인 것으로 평가되었다.

• 한국농촌건축학회논문집
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• 제12권4호
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• pp.61-68
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• 2010

The justice of the house for rural life all the member Iran meaning namely, 'countries or the suburb' a possibility of calling attaches the house in the intention which is and as the country or suburban house there is. The house for rural life from 19 end of a century Great Britain inferiorly becomes complements the problem points of urban setting the opinion which sees the garden city which appears in the link for with the era is general in the Industrial Revolution. Therefore most the dwelling environment which is comfortable selects the site becomes the important element. Our country case in order to send a holiday season weekend from wealthy class of past decimal or the weekend house which builds, is generalized with the recent economic improvement where the form of villa etc. forms a mainstream but. From the research which sees consequently examines a plan about week life after retiring of the city workers and dwells investigates the contents which is concrete from the family with there is the goal provides a hereafter house for rural life plan at the time of fundamental data in the farming and fishing villages area.