• 한국해양공학회지
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• 제21권5호
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• pp.55-60
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• 2007

Bellows are mechanical components which prevent the damage of system by absorption of the vibration and the displacement of axle and radial direction. Thermal piping system is expanded by the fluid of the high temperature from the heat engine inside. At this time, bellows prevent the damage of the piping due to the thermal expansion. Recently, design of bellows is required to fit some other operational environments which are not suggested in the E.J.M.A code book. And it is difficult to produce and to maintain bellows of high temperature and high pressure bemuse of its complicated shape and this causes the manufacturing cost to rise. The objective of this study is to determine optimum shape of bellows which can endure in the high temperature and high pressure. The maximum stress has an effect on the fatigue life of bellows, therefore it needs to be minimized. This study attempts to find a shape which minimizes the stress occurring in the bellows by the design of experiment. The model used in this study is not presented in the E.J.M.A code book, therefore, from the result of design of experiment we find the factors which give effects on the characteristic value and we presents the recession model using the RSM, which can predict the characteristic values depending on the change of factor values.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2014년도 춘계 종합학술대회 논문집
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• pp.361-362
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• 2014

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2012년도 춘계학술논문집 2부
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• pp.823-825
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• 2012

본 논문에서는 스마트 패드를 기반으로 하여 효과적인 이러닝 콘텐츠 생성과 관리 기술을 설명하고, 이를 기반으로 스마트 패드에 맞게 다양한 기능 및 데이터베이스를 설계하였다. 또한, 안드로이드 플랫폼에서 이를 구현하여 실질적인 온라인 교육에 사용가능함을 제시하였다.

• 유통과학연구
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• 제13권9호
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• pp.37-45
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• 2015

Purpose - This paper's aim is to investigate whether or not gross profitability explains the cross-sectional variation of the stock returns in the Korean stock market. Gross profitability is an alternative profitability measure proposed by Novy-Marx in 2013 to predict cross-sectional variation of stock returns in the US. He shows that the gross profitability adds explanatory power to the Fama-French 3 factor model. Interestingly, gross profitability is negatively correlated with the book-to-market ratio. By confirming the gross profitability premium in the Korean stock market, we may provide some implications regarding the well-known value premium. In addition, our empirical results may provide opportunities for the fund distribution industry to promote brand new styles of funds. Research design, data, and methodology - For our empirical analysis, we collect monthly market prices of all the companies listed on the Korea Composite Stock Price Index (KOSPI) of the Korea Exchanges (KRX). Our sample period covers July1994 to December2014. The data from the company financial statementsare provided by the financial information company WISEfn. First, using Fama-Macbeth cross-sectional regression, we investigate the relation between gross profitability and stock return performance. For robustness in analyzing the performance of the gross profitability strategy, we consider value weighted portfolio returns as well as equally weighted portfolio returns. Next, using Fama-French 3 factor models, we examine whether or not the gross profitability strategy generates excess returns when firmsize and the book-to-market ratio are controlled. Finally, we analyze the effect of firm size and the book-to-market ratio on the gross profitability strategy. Results - First, through the Fama-MacBeth cross-sectional regression, we show that gross profitability has almost the same explanatory power as the book-to-market ratio in explaining the cross-sectional variation of the Korean stock market. Second, we find evidence that gross profitability is a statistically significant variable for explaining cross-sectional stock returns when the size and the value effect are controlled. Third, we show that gross profitability, which is positively correlated with stock returns and firm size, is negatively correlated with the book-to-market ratio. From the perspective of portfolio management, our results imply that since the gross profitability strategy is a distinctive growth strategy, value strategies can be improved by hedging with the gross profitability strategy. Conclusions - Our empirical results confirm the existence of a gross profitability premium in the Korean stock market. From the perspective of the fund distribution industry, the gross profitability portfolio is worthy of attention. Since the value strategy portfolio returns are negatively correlated with the gross profitability strategy portfolio returns, by mixing both portfolios, investors could be better off without additional risk. However, the profitable firms are dissimilar from the value firms (high book-to-market ratio firms); therefore, an alternative factor model including gross profitability may help us understand the economic implications of the well-known anomalies such as value premium, momentum, and low volatility. We reserve these topics for future research.

• 한국비블리아학회지
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• 제34권3호
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• pp.59-87
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• 2023

본 연구는 초등학교 저학년 외국인 가정 다문화 학생의 언어능력 향상과 정서적 안정감을 촉진시키기 위한 학교도서관을 활용한 그림책 읽어주기 수업의 운영 사례를 제시하는 데 목적이 있다. 이를 위해 다문화 학생을 대상으로 한 그림책 읽어주기 수업을 계획하고 실제 수업을 진행하며 얻은 결과를 분석하였다. 연구 과정에서는 다문화교육 및 언어능력 향상을 위한 그림책 활용과 관련된 선행 연구들을 고찰하였으며, 이를 토대로 수업의 주요 요소들을 도출하여 수업 절차를 구체적으로 설계하였다. 실제로 경기도의 A초등학교에서 1학년과 2학년 다문화 학생 5개 반 43명을 대상으로 20주 동안 반별로 각각 3회의 시범수업과 17회의 본 수업, 총 100회의 그림책 읽어주기 수업을 실시하였다. 연구 결과, 그림책 읽어주기 수업이 다문화 학생들의 한국어 이해 능력 향상에 긍정적인 영향을 미쳤음을 확인하였다. 학생들의 한국어 표현력과 발표 태도가 개선되었으며, 도서관 이용도가 증가한 것으로 나타났다. 또한, 그림책 읽어주기 수업은 학급생활 태도에도 긍정적인 변화를 가져왔다. 본 연구에서 제안한 학교도서관 활용 그림책 읽어주기 수업의 절차는 실제 학교교육 현장의 수업 운영과정에서 구상되고 발전된 것으로, 다문화 학생들의 증가에 따른 수업 환경 개선의 필요성을 반영한 실행연구이다. 이 연구를 통해 초등학교 저학년 다문화 가정의 학생들을 위한 그림책 읽어주기 수업이 어떻게 수업 환경을 개선하고 학습 성과를 향상시킬 수 있는지에 대한 중요한 시사점을 도출하였다.

• Child Health Nursing Research
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• 제23권1호
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• pp.70-80
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• 2017

Purpose: In this study a caregiver's role improvement program was developed and tested to identify the effect on uncertainty, stress, and role performance of caregivers with hospitalized children. Methods: The design of this study was a quasi-experimental study with a nonequivalent control group and a non-synchronized design. Thirty-three caregivers were assigned to the experimental group and 33 to the control group. Data were collected from March 5 2016 to April 10 2016. For the experimental treatment, each individual was given on-site education with situated learning (given 30 minutes each, for 2 sessions), and self-repetition learning activities were performed from the e-book. Data were analyzed using t-test, ${\chi}^2-test$, Fisher's exact test, paired t-test, and independent t-test. Results: The level of uncertainty and stress decreased, and role performance level improved for these caregivers with hospitalized children. Conclusion: The findings of this study show that using on-site education through situated learning and self-repetition learning with an e-book as in the caregiver's role improvement program is an effective intervention. Therefore, utilizing the caregiver role improvement program developed in this study is recommended as an effective intervention for caregivers of hospitalized children.

• 무역상무연구
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• 제18권
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• pp.189-218
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• 2002

The EPC/Turnkey Contract goes to the extreme in allocating risks to the contractor and depending on the types of project, this may be regarded as unacceptable. It has also gone to the extreme in the extent to which the contractor is responsible for the specification and design of the Works. The employer is not responsible for correctness of any information provided by him nor for correctness of any specification or other matter included in the Employer's Requirements, except the definition of the intended purpose and criteria for testing and performance. With such conditions it is surprising that the employer is entitled to interfere in the contractors performance to an extent that is close to what is norm for a construction contract with employer design and with normal risk allocation. The combination of risk allocation and inappropriate administrative provisions makes the EPC/Turnkey Contract a document that will meet severe resistance from contractors. It is also likely that employers will see the risks and difficulties from their own perspective. It is a fiction that the EPC/Turnkey Contract will give the employer a contact with a certainty of final price and completion date. It is not a fiction that the EPC/Turnkey Contract carries many seeds for disputes between the parties. The Orange Book has become an accepted document even if it clearly contains some weaknesses. Some of these have been corrected in the Plant Contract. In my opinion FIDIC should let users become more familiar with the Plant Contract as a follow up to the Orange Book.

• 디자인학연구
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• 제15권1호
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• pp.339-347
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• 2002

컷 분할 그림책은 이야기를 표현하는 연속적인 여러 개의 화면 또는 여러 개의 컷으로 분할된 화면으로 구성된다. 시각에 의한 정보전달 매체로서 컷 분할 그림책은 구체적인 시각 경험을 가능하게 하는 동시에 창조적 사고 발달과 정서 함양에 효과적이고, 그에 따른 미적 체험으로 다양한 조형 감각을 일깨우게 된다. 본 연구는 시각적 흐름에 따른 구체적 형태의 컷 분할을 이용한 일러스트레이션의 연결 표현에 관하여 알아보고 그에 따른 작품 분석을 통하여 영상 매체의 전달 특성을 수용한 컷 분할 형식의 일러스트레이션을 분석하였다. 컷 분할 형식의 일러스트레이션을 통하여 그림 자체로서 메시지를 전달하는 그림책 일러스트레이션은 인간에게 보다 발전된 의미에서의 시각적 경험을 할 수 있는 계기를 마련해주고, 다양한 표현과 일러스트레이션 제작을 통해 좀 더 새로운 조형 요소를 이해하고 시각적 경험을 할 수 있게 한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2010년도 추계학술발표대회
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• pp.1388-1391
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• 2010

In this paper, we present a design and implementation of U-learning system using pen based augmented reality approach. Student has been given a smart pen and a smart study book, which is similar to the printed material already serviced. However, we print the study book using CMY inks, and embed perceptually invisible dot patterns using K ink. Smart pen includes (1) IR LED for illumination, IR pass filter for extracting the dot patterns, and (3) camera for image captures. From the image sequences, we perform topology analysis which determines the topological distance between dot pixels, and perform error correction decoding using four position symbols and five CRC symbols. When a student touches a smart study books with our smart pen, we show him/her multimedia (visual/audio) information which is exactly related with the selected region. Our scheme can embed 16 bit information, which is more than 200% larger than previous scheme, which supports 7 bits or 8 bits information.

• 정보관리학회지
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• 제14권1호
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• pp.207-222
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• 1997

문헌자료처리를 위한 기존의 한국 표준규격 KSC5877과 5969를 참고로 하여 비도서자료를 소장한 단일 도서관이 단행본과 함께 동시에 검색이 가능한 통합 이용자인터에페이스를 자료의 특성에 따라 설계하였다. 검색시스템의 주화면과 자료형태별 검색이 가능토록 하였으며 단행본, 음향자료, 영상자료, 팜플렛, 포스터등의 자료가 그 형태의 특성에 따라 검색이 될수 있도록 구현하였다.