• 제목/요약/키워드: historical value

검색결과 839건 처리시간 0.024초

Evolutionary Optimization of Pulp Digester Process Using D-optimal DOE and RSM

  • Chu, Young-Hwan;Chonghun Han
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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    • pp.395-395
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    • 2000
  • Optimization of existing processes becomes more important than the past as environmental problems and concerns about energy savings stand out. When we can model a process mathematically, we can easily optimize it by using the model as constraints. However, modeling is very difficult for most chemical processes as they include numerous units together with their correlation and we can hardly obtain parameters. Therefore, optimization that is based on the process models is, in turn, hard to perform. Especially, f3r unknown processes, such as bioprocess or microelectronics materials process, optimization using mathematical model (first principle model) is nearly impossible, as we cannot understand the inside mechanism. Consequently, we propose a few optimization method using empirical model evolutionarily instead of mathematical model. In this method, firstly, designing experiments is executed fur removing unecessary experiments. D-optimal DOE is the most developed one among DOEs. It calculates design points so as to minimize the parameters variances of empirical model. Experiments must be performed in order to see the causation between input variables and output variables as only correlation structure can be detected in historical data. And then, using data generated by experiments, empirical model, i.e. response surface is built by PLS or MLR. Now, as process model is constructed, it is used as objective function for optimization. As the optimum point is a local one. above procedures are repeated while moving to a new experiment region fur finding the global optimum point. As a result of application to the pulp digester benchmark model, kappa number that is an indication fur impurity contents decreased to very low value, 3.0394 from 29.7091. From the result, we can see that the proposed methodology has sufficient good performance fur optimization, and is also applicable to real processes.

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공간유형별 농촌경관 평가 및 비교 분석 - 전북 고창 선동권역의 주민과 방문객을 대상으로 - (An Evaluation of Rural Landscape and Comparative Analysis in Accordance with Space Types : Focused on Residents and Visitors of Seondong Region, Gochang-Gun, Jeollabuk-Do, Korea)

  • 백종인;반영운;우혜미;최나래
    • 농촌계획
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    • 제16권4호
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    • pp.1-11
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    • 2010
  • This study has intended to evaluate rural subjective landscape through participation of residents and visitors according to space types, and to perform comparative analysis of evaluation results between residents and visitors. This study has employed a survey method for which 58 residents of 8 villages within Seondong region at Gochang-gun and 70 visitors to Green Barley Field Festival in the target region have participated. 42 landscape view points were selected according to landscape scopes and space types, and then the preference was evaluated using landscape adjectives after showing pictures already taken for each landscape view point. This study has found the following results. First, whereas residents gave high points to natural landscape and artificial one at the historical culture areas in comparison with other landscape scopes, visitors gave them low points on the other hand. Second, visitors evaluated the cultivated area among space types of mixed landscapes with high value. Third, based on t-test for comparative analysis, the statistically significant differences of evaluation results appeared at 6 places among 8 natural landscapes, 3 places among 12 artificial landscapes, and 3 places among mixed landscapes.

다자간 원자력 협력: 요소와 현안 (Multilateral Nuclear Approaches (MNAs), Factors and Issues Lessons from IAEA Study to Regional Cooperation)

  • Hwang Yong-Soo
    • 한국방사성폐기물학회:학술대회논문집
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    • 한국방사성폐기물학회 2005년도 춘계 학술대회
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    • pp.56-66
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    • 2005
  • In response to the increasing emphasis being placed on the importance of international cooperation as part of global efforts to cope with growing non proliferation, and security, concerns in the nuclear field, the Director General of the International Atomic Energy Agency (IAEA), Mohamed ElBaradei, appointed an international group of experts to consider possible multilateral approaches to the nuclear fuel cycle. The mandate of the Expert Group was three fold: ${\bullet}$ To identify and provide an analysis of issues and options relevant to multilateral approaches to the front and back ends of the nuclear fuel cycle; ${\bullet}$ To provide an overview of the policy, legal, security, economic, institutional and technological incentives and disincentives for cooperation in multilateral arrangements for the front and back ends of the nuclear fuel cycle; and ${\bullet}$ To provide a brief review of the historical and current experiences and analyses relating to multilateral fuel cycle arrangements relevant to the work of the Expert Group. The overall purpose was to assess MNAs in the framework of a double objective: strengthening the international nuclear non proliferation regime and making the peaceful uses of nuclear energy more economical and attractive. The Group identifies options for MNAs - options in terms of policy, institutional and legal factors - for those parts of the nuclear fuel cycle of greatest sensitivity from the point of view of proliferation risk. It also reflects the Groups deliberations on the corresponding benefits and disadvantages (pros and cons) of the various options and approaches. Although the Expert Group was able to agree to forward the resulting report to the Director General, it is important to note that the report does not reflect agreement by all of the experts on any of the options, nor a consensus assessment of their respective value. It is intended only to present options for MNAs, and to reflect on the range of considerations which could impact on the desirability and feasibility of those options.

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『동의수세보원(東醫壽世保元)』의 결흉(結胸) 해석 - 소양인 결흉을 중심으로 - (Interpretation of chest bind(結胸) in Donguisusebowon(東醫壽世保元) based on the chest bind disease of the Soyang pattern)

  • 장우창
    • 대한한의학원전학회지
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    • 제28권4호
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    • pp.99-119
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    • 2015
  • Objectives : This study aims to compare and analyze the contents and logic of Lee Jema's chest bind theory of the Soyang pattern with that of the traditional perspective since Shanghanlun, and to further investigate its underlying meaning and evaluate its value. Methods : Study chest bind related arguments of Lee through historical, demonstrative and positive investigation. First, contrast related texts starting from Shanghanlun, followed by reasoning based on general medical logic. Finally review clinical case studies from texts and papers for verification. Results : According to Lee, the key to diagnosis and treatment in preventing major chest bind which is a severe condition in the exterior cold pattern of the Soyang constitution, is to disperse fluid bind using GanSui(甘遂) in the water counterflow and vomiting(水逆嘔吐) stage prior to the major chest bind symptoms of stiffness and pain in the lower chest(心下硬痛), and reducing phlegm-rheum using DoJeokGangGiTang(導赤降氣湯) in the beginning stages of chest bind. HyeongBangDoJeokSan(荊防導赤散) is the main formula in treating phlegm-rheum, a causal factor to chest bind, modified according to the 'treat the three burners separately(三焦分治)' theory of the DaoChiSan(導赤散) section in WanBingHuiChun (萬病回春) to accomodate the Soyang constitution. Conclusions : If we follow Lee's diagnosis and treatment system on chest bind, it will allow us to diagnose chest bind in the earlier stages and secure safe treatment.

전통 한지를 활용한 패션 액세서리 상품 개발 II - 관련문헌 분석을 중심으로 - (A Study on the Development of Fashion Accessary Product made with Korean Traditional Paper Hanji II - Focusing on analysis of the related references -)

  • 심준영;김용숙
    • 한국생활과학회지
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    • 제15권5호
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    • pp.803-809
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    • 2006
  • Korean traditional paper 'Hanji' made from the bark of the paper mulberry tree is a good handicraft material because of its high viscosity, durability, dyeability, toughness, flexibility, plasticity, and manipulability. Hanji has been used as a textile material such as cotton wool for protection and keeping us warm from cold weather. However, Hanji has many limitations, while other textile materials have many advantages of such as washability, being sunproof, and fast coloring. The purpose of this study is to review physical properties, formation ability, and dyeability of Hanji as a material of fashion accessary. The contents of this study are composed of 5 parts: 1. To introduce the necessities of this study, 2. To review a historical background of Hanji and to identify its physical characteristics as a fashion accessary material, 3. To review and to compare techniques such as bonding, quilting, knitting, creasing and holding, twisting, folding & braiding, paper pasting, coloring & cutting, and outwashing(?) in making Hanji fashion accessaries, 4. To review dyeing and finishing techniques to increase commercial value, 5. To identify the best fashion accessary materials made of Hanji. The most important characteristics of Hanji as a fashion accessary material are its toughness in a wet state, fast color fixing, and flexibility. Especially weaving and knitting are considered as the most desirable techniques to make fashion accessary products stronger and more practical.

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추상 애니메이션의 예술적 성과와 현대적 의의 (Artistic Achievement of Abstract Animation and Contemporary Significance)

  • 손국환;박성대
    • 한국콘텐츠학회논문지
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    • 제12권6호
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    • pp.132-141
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    • 2012
  • 본 연구는 애니메이션 장르에서 추상애니메이션이 갖는 가치와 예술적 성과를 역사적으로 재조명하고 미즈에 미라이 (Mirai Mizue)를 비롯한 추상애니메이션 작가의 작품세계와 아방가르드적 특성의 연구를 통해 추상 애니메이션의 현대적 의의와 그 중요성을 밝히는데 목적이 있다. 추상애니메이션은 이미지의 시간성과 운동성을 다루는 예술가들의 실험적 작품으로 현대 시각문화와 애니메이션의 발달을 위해 중요한 역할을 하고 있음에도 불구하고 영상 콘텐츠 시장의 대중성이라는 특징 때문에 상업화와 흥행에 치중되어 그 가치를 잃어가고 있다. 이에 본 논문은 추상 애니메이션과 같은 실험 애니메이션이 애니메이션 산업을 포함한 영상 콘텐츠 산업의 다양화와 질적 향상에 기여하는 현대적 의의가 있음을 밝히고 현대 산업에 미치는 영향도 살펴본다. 또한 모더니즘으로 시작하여 다양화되고 있는 추상애니메이션의 발전과정과 현대적 진화, 그리고 추상 애니메이션의 실험적 특성과 표현방법들에 대해 논의한다.

훈련과 교육의 재고찰 (The Educational Meaning of Training : In the Works of Deleuze and Guattari)

  • 정창호
    • 한국교육논총
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    • 제40권3호
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    • pp.17-38
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    • 2019
  • 들뢰즈·가타리는 훈련의 교육적 의미를 쇄신하였다. 그들에 따르면 '과격한 훈련'은 무의식과 의식을 관통하여 이루어진다. 수영 훈련 시 몸의 힘을 빼는 일은 의식적으로 노력한다고 달성되지 않는다. 그것은 신체를 움직이는 훈련의 과정을 통해서만 가능할 뿐이다. 이상의 주장에는 훈련에 관한 역사적 고찰이 갈마들어 있다. 고대 소크라테스는 진실 말하기를 유도하는 정신의 훈련과 몸을 건강하게 하는 신체 훈련을 구분함으로써 교육적 언어의 독자성을 확보하였고, 이는 오늘날에도 교육적 유산으로 계승되고 있다. 그러나 푸코가 제기한바, 근대 이래로 '규율훈련'형 사회에서 인간은 자발적 복종의 길에 들어섰다. 나아가 오늘날 '기능훈련'이라는 말조차 경영 언어로 대체된 바 우선 이를 극복할 이론적 논의가 요청된다. 이 지점에서 들뢰즈·가타리의 '전(前)인칭적 특이성들'에 입각한 '타자-되기'론은 정신의 훈련과 신체 훈련 간의 위계를 말소시킨다. 역설적이게도 이는 정신의 훈련을 '기능훈련'으로 흡수해 버린 근대적 사고를 전도시킴으로써, 소크라테스가 남긴 교육 언어로서의 훈련의 의미를 사유할 이론적 교두보로 기능하는 '효과'를 발휘한다. 우리는 이 교육적 효과를 발판삼아 궁술(弓術)훈련의 교육적 가치를 음미할 수 있다. 궁술훈련은 엄격한 훈련과 명상을 관통하는 훌륭한 교육적 사례이다.

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생산부터 보존까지 기록관리 전반에서 이해하는 기록평가: 미국 뉴욕주기록관의 사례연구 (Records and Archival Appraisal from a Holistic Perspective: A Case Study of New York State Archives)

  • 신동희
    • 한국기록관리학회지
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    • 제20권1호
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    • pp.177-199
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    • 2020
  • 본 연구는 기록이 생산되어 보존기록관까지 도달하는 과정에서 평가라는 중요한 기록관리 업무가 어떻게 유기적으로 수행되는 지를 탐구한다. 이러한 통시적인 관점에서 미국뉴욕주기록관의 기록관리 및 평가시스템을 하나의 사례로 살펴보고자 한다. 미국의 기록환경은 아키비스트와 레코드매니저의 역할과 전문성을 구분하는 점에서 한국의 사례와는 다르다. 이런 환경에서도 뉴욕주기록관은 생산기관의 기록관리 과정의 평가업무를 적극지원한다. 본 연구는 미국 뉴욕주의 사례를 통하여 아키비스트의 기록물 평가가 보존기록물의 이관과 수집 시점에 시작한다는 소극적인 관점에서 벗어나, 기록물 생애주기의 시작점에서부터 아키비스트가 가지는 책임과 역할이 있다는 점을 강조한다.

OASIS의 선정지침 개선(안)에 관한 연구 (A Study on Improving the OASIS Selection Guidelines)

  • 노영희;고영선
    • 한국비블리아학회지
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    • 제23권3호
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    • pp.105-137
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    • 2012
  • 웹상에서 유통되는 정보자원의 역사적, 사회적, 문화적 가치는 전 세계적으로 인정받고 있으며, 인류 유산으로 후세에게 물려주기 위한 웹 아카이빙 사업이 수행되고 있다. 이 사업에서 가장 기본이 되는 것은 수많은 웹 자원 중 수집 및 보존의 가치가 있는 웹 자원을 선정하기 위한 선정지침이라 할 수 있다. 본 연구에서는 선행연구 및 국내외 웹 아카이빙 선정지침을 집중적으로 분석하여 OASIS를 위한 선정지침의 개선안을 제안하였다. 첫째, 웹 자료에 대한 정의, 용어정의, 수집기본원칙, 수집방법, 수집주기, 구체적인 아카이빙 대상자원 선정에 대해서 개선 내용을 제안하였다. 둘째, 수집대상자료에 대해서 대폭적으로 개선 내용을 제안하였으며, 웹 아카이빙 선정제외자료에 대한 제안도 하였다. 마지막으로, 수집방법과 온라인 자료 납본과의 관련성, 선정대상자료에 대한 목록데이터베이스 구축의 필요성, 협력형 아카이빙 정책의 필요성에 대해서 논의하였다.

문화예술교육과 경험을 중심으로 한 중학교 의생활교육 프로그램 개발 적용 (Development and Application of Clothing Life Education Program in Middle Schools based on the Education and Experience in Arts & Culture)

  • 배현영;이혜자
    • 대한가정학회지
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    • 제50권8호
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    • pp.79-95
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    • 2012
  • The purpose of this study is to seek improvement in clothing life education through a development and application of the clothing life education program for middle schools based on the education and experience in arts & culture. On the basis of art & culture education as well as, Dewey's experience, the clothing life area education program was designed and developed for the 2nd year students in the middle school. This program was applied to 350 students of 9 2nd year classes in M middle school during the 17 periods of clothing life area classes, beginning from May 23rd, 2011 and lasting to September 30th, 2011. The leaner-evaluation was performed in terms of the level of learning interest and academic achievement. To measure the level of academic achievement, a mind-map evaluation was performed and a learning effect survey, which evaluates the level of achievement of learning objectives, was carried out. For the purpose of class observation, classes were filmed and analyzed. Characteristics of a class were recorded on a teacher's diary and was used to support the qualitative evaluation. According to the results, the education program is analyzed as being helpful and useful in student understanding of fiber, textile and, clothes, which are materials and outcomes of culture and art; moreover, they have a historical, cultural and artistic value in themselves. It is also analyzed as being helpful for the development of student aesthetic sensibility and emotion, for the construction of meaningful experience through a learning process, for the improvement of learning interest and the level of academic achievement, and for the positive recognition of the learning effect.