• 제목/요약/키워드: A first principles study

검색결과 813건 처리시간 0.027초

장흥임씨 출토의복 보수(補修)에 관한 연구 (A Study on the Mending Work Based on the Excavated Costume of Jang Heung Lim's)

  • 안명숙;이미식
    • 복식
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    • 제54권8호
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    • pp.27-34
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    • 2004
  • Jang Heung Lim's is a nephew's wife of Kim Duk Ryung, who had been served as a general of Chosun dynasty. When her Tomb was removed to another places there were excavated some articles such as six Korean traditional costume, Korean socks, Korean shoes (Mituri) and so on. The unearthed costume was designated as a monentous folk materials, No.112, and placed on Gwangju folklore museum. At that time, the mending work in the lost part of costume was not implemented. Only an act of textile conservation was worked. In the article, we go through the mending principles and mending methods in damaged parts of costume. First, the mending principles on the damaged costume are as follows : (1) minimize the repaired parts, (2) mend the only damaged parts, (3) use the same color and cloth as that of original ones, (4) use the appropriated stitching method (5) act the fixed framework in case of missing a outer cloth. Second, the mending method related to the damaged part are as follows : (1) the repairing method in the bodice and sleeve part of costume, (2) the repairing method in the hem of steeve, (3) the repairing method in the collar of costume, (4) the repairing method in the armpit part of costume, (5) the repairing method in the connecting parts between one and another width of Korean traditional long skirt. With this article, we wish that the repairing method in the cultural costume will be developed scientifically and specified efficiently.

건축을 활용한 초등학교 수학 중심의 융합교육 수업자료 개발 (The Development of STEAM Education Material Focused on Elementary Mathematics Using Architectures)

  • 이종학;윤마병
    • 한국콘텐츠학회논문지
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    • 제14권6호
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    • pp.499-512
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    • 2014
  • 건축은 기술과 예술의 결합체이면서 다양하고 수준 높은 수학 과학적 원리들을 담고 있다. 석굴암과 불국사 대웅전, 부석사 무량수전, 파르테논 신전 등과 같은 국내외의 뛰어난 건축물들에 내재된 흥미로운 수학적 사실들과 원리들을 학습소재로 하여 탐구하는 기회를 학생들에게 제공할 수 있다. 건축물들에 내재된 수학적 사실들을 직접 찾아보고 그 원리들을 탐구해 보는 활동은 학생들에게 수학의 실용성을 인식하고, 왜 공부해야 하는지에 대한 당위성을 부여하면서 학습에 대한 흥미와 관심을 제공할 수 있다. 본 연구는 수학적 원리를 담고 있는 역사적인 건축물들에 대해서 알아보고, 이를 기반으로 건축을 활용한 초등학교 수학 중심의 융합교육(STEAM)자료를 개발 했다. 본 연구의 결과는 다음과 같다. 첫째, 2009개정교육 과정을 바탕으로 초등학교 수학 교과의 '비례', '대칭', '도형의 이동', '쌓기나무', '삼각형' 단원의 목표 및 학습 내용을 분석하여 주제를 선정하고, 적절한 역사적 건축물을 학습소재로 선정하였다. 둘째, 수학적 내용을 담고 있는 역사적 건축물들에 대해서 메타분석을 하였다. 셋째, 교실 수업에서 실제적으로 활용이 가능하도록 건축을 활용한 수학 중심의 25차시 융합교육 자료를 개발하고, 개발한 융합교육 자료에 대한 전문가 집단의 타당도 검사에서 수업 자료로서 적절하다는 평가를 받았다.

건강보험 기본급여의 우선순위 (Priority-setting in Expanding the Basic Benefit Package in Korean Health Insurance Scheme)

  • 정형선;김주경;이규식;신의철
    • 보건행정학회지
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    • 제14권2호
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    • pp.34-57
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    • 2004
  • Universal health insurance normally requires a basic benefit package, whose design intersects with almost all other aspects of the health insurance debate. Despite its central importance, basic benefit package has not received the analysis it deserves in Korea. The issue of how to decide which health services should be delivered and to whom has been a matter for consistent policy debate. Many industrialized countries observed in this study have been dealing explicitly or implicitly with the basic benefit package. The methods vary from having a specific positive list of services (Bismarkian countries) to the use of guidelines (Beveridgian countries). The purpose of this paper is to form the underlying principles and process for determining what is included or left out by getting accurate and representative responses from health-related personnel. Mail survey is used. Economic burden for treatment, seriousness of disease and urgency of treatment are ranked at the first three priorities. Services that had been suspended because of financial crisis in health insurance scheme in 2001 were selected as items which should firstly be expanded into coverage. Diagnostic test against heart disease and vaccination were also selected as items which should additionally belong to the list of covered services.

유니버셜 디자인 측면에서 공공 공간의 환경평가와 개선방안 -안산시 공공기관을 중심으로- (A Study on UD Environmental Assessment and Countermeasures for Public Space -Focused on Public Space of Ansan City-)

  • 하재경;김양희
    • 한국디지털건축인테리어학회논문집
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    • 제9권1호
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    • pp.5-10
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    • 2009
  • Recently, the public offices are going to be an important role of CIP(City Identity Program) and be a center of citizen's community activities. So, the aspect of the universal design (UD), the space performance assessment for a disable user is invaluable to designing the public office spaces. Purpose of this paper is to provide basic data for better design of public office space based on UD(universal design) principle. Conclusion based on the finding are as follows; First, checklist of environmental assessment for public space was composed of 7 basic principles of UD and 3 additional principles(aesthetic appreciation, maintenance and eco-design). Second, as the result of assessment, accessible and inclusive design is more necessary. Third, local characteristics should be developed and managed deliberately as to public space design. As the result of that, public office space design should an important part of reducing the isolation that was caused by physical and social disability. From now on, in public office space design, the integrated and continuous design program that is based on UD principle and eco-design will be necessary.

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선박건조계약상 건조자책임과 제조물책임 (A Study on the Liability of the Builder in the Shipbuilding Contract and Products Liability.)

  • 정선철
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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    • pp.92-93
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    • 2005
  • A contract for the shipbuilding is usually a complicated and involves statement of rights, obligations and responsibilities which each party agrees vis-a vis the other. The ultimate purpose of the contract is the sale and transfer of the finished ship by the builder to the buyer. Contracts for the construction and sale of ships are categorized as contracts for the sale of goods under English, United States, Germany and some countries law. On the other hand, The shipbuilding contract may be classified, not as a contract of sale but as a contract for work and materials under Korea, Japan and some countries law. Especially, most of countries are now well settled with regard to liability of a manufacturer in tort for physical injury and on the other for pure economic loss to remote owners of chattels. Where there is either a breach of contractual warranty or an implied warranty, there may be admiralty jurisdiction, depending once again on the situs of the event and its relationship to traditional maritime activity. Contract principles will be applied to the first type of warranty and tort principles will be applied to the second. First of all, this thesis is dealt with the contents of contract under English Law. Secondly, this thesis is analysed into the liability of shipbuilder in Products Liability under English, American and Korean Law comparisons. In conclusion, the author tries to give some suggestions as countermeasures of Products Liability to the shipbuilder in Korea.

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초등학생들의 달의 위상변화에 대한 개념 유형과 수업 방법의 제안 및 효과 (Conception Types of Elementary School Students about the Moon Phase Changes and the Suggestions and Effects of Teaching Methods)

  • 손준호
    • 한국과학교육학회지
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    • 제35권2호
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    • pp.289-301
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    • 2015
  • 이 연구에서는 삼구의를 활용한 기존의 수업 방식으로는 학생들이 달의 위상변화의 원리를 정확하게 이해할 수 없을 뿐만 아니라 교사들 조차도 제대로 된 이해가 부족한 채 지도하고 있음에 주목하였다. 따라서 삼구의를 활용한 달의 위상변화 학습에서 초등학생들이 이해하고 있는 유형을 161명의 응답 결과를 토대로 분류하고, 기존의 연구에서 개발된 학습 자료를 재구성한 교수 학습 방법을 활용함으로써 그들의 이해 유형이 어떻게 변하였는지 확인하였으며, 129명 학생들의 학업성취도에는 어떠한 효과를 미치는지 검증하였다. 그리고 교사와 학생 총 8명을 대상으로 새로운 교수 학습 방법에 대해 어떠한 생각을 갖고 있는지 심층 면담을 통해 확인하였다. 그 결과, 학생들은 크게 C 유형과 W 유형을, 세부적으로는 W1, W2, W3, W4, W5 유형으로 나눌 수 있었는데 보름달 보다는 초승달과 상현달의 위상 원리를 더 어려워하였다. 그리고 재구성한 교수 학습 방법을 활용해 보충수업을 실시한 65명의 실험집단 학생들이 지도서의 내용으로 보충수업을 실시한 64명의 비교집단 학생들보다 학업성취도 사후 검사뿐만 아니라 추후 검사에서도 효과가 있었다. 심층 면담에서도 교사 학생 모두 이 연구에서 제시한 교수 학습 방법에 대해 긍정적인 답변을 해 주었다. 결론적으로 이 연구를 통해 달의 위상변화와 관련된 활동을 삼구의를 활용해 학습할 때는 결과만을 암기하는 학습에서 벗어나 원리를 정확하게 이해할 수 있도록 초등학생들에게 도움을 주는 단계별 학습 자료를 적극 활용할 것을 강조하였다.

First-principles Study of Graphene/Hexagonal Boron Nitride Stacked Layer with Intercalated Atoms

  • Sung, Dongchul;Kim, Gunn;Hong, Suklyun
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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    • pp.185.2-185.2
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    • 2014
  • We have studied the atomic and electronic structure of graphene nanoribbons (GNRs) on a hexagonal boron nitride (h-BN) sheet with intercalated atoms using first-principles calculations. The h-BN sheet is an insulator with the band gap about 6 eV and then it may a good candidate as a supporting dielectric substrate for graphene-based nanodevices. Especially, the h-BN sheet has the similar bond structure as graphene with a slightly longer lattice constant. For the computation, we use the Vienna ab initio simulation package (VASP). The generalized gradient approximation (GGA) in the form of the PBE-type parameterization is employed. The ions are described via the projector augmented wave potentials, and the cutoff energy for the plane-wave basis is set to 400 eV. To include weak van der Waals (vdW) interactions, we adopt the Grimme's DFT-D2 vdW correction based on a semi-empirical GGA-type theory. Our calculations reveal that the localized states appear at the zigzag edge of the GNR on the h-BN sheet due to the flat band of the zigzag edge at the Fermi level and the localized states rapidly decay into the bulk. The open-edged graphene with a large corrugation allows some space between graphene and h-BN sheet. Therefore, atoms or molecules can be intercalated between them. We have considered various types of atoms for intercalation. The atoms are initially placed at the edge of the GNR or inserted in between GNR and h-BN sheet to find the effect of intercalated atoms on the atomic and electronic structure of graphene. We find that the impurity atoms at the edge of GNR are more stable than in between GNR and h-BN sheet for all cases considered. The nickel atom has the lowest energy difference of ~0.2 eV, which means that it is relatively easy to intercalate the Ni atom in this structure. Finally, the magnetic properties of intercalated atoms between GNR and h-BN sheet are investigated.

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이론병문(理論騈文)의 외치 시술방법에 관한 연구 (A Study of External Treatment on the ${\ulcorner}LiYaoPianWen{\lrcorner}$)

  • 정명용;김은하;안상우;이병욱
    • 한국한의학연구원논문집
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    • 제12권2호통권17호
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    • pp.1-14
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    • 2006
  • 1) Objective External treatments have various curative effects. So it had been used to cure various patients. But, it has a limited sphere of application in the present South Korea. And the ${\ulcorner}$Li-Yao-Pian-Won${\lrcorner}$ had been written by Wu-Shang-Xian(吳尙先) in 1864. The book is the first technical book of external treatments. So, he has been held in respected as the father of external treatments by many people. Therefore we would like to bring out it’s external treatments theory 2) Conclusions Wu-Shang-Xian(吳尙先) had insisted that external treatments principles are identical with internal treatments. So, prescriptions of external treatment are selected and made by principles of internal treatment. (1) The factors of determination external treatment’s methods are focus (meridian, inside and outside etc.), attribute of diseases, patient’s liking. (2) The treatment regions are decided by meridian theory, diseases region and external treatment’s methods.

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편집자 주: 31권 3호 (Editorial for Vol. 31, No. 3)

  • 김영효
    • 항공우주의학회지
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    • 제31권3호
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    • pp.61-63
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    • 2021
  • In Vol. 31, No. 3, our journal prepared three review articles, an original paper, and two case reports. First, as COVID-19 continues for a long time, aviation workers, including pilots, are also experiencing mental problems such as depression. Therefore, we have compiled the basic principles for improving the mental health of pilots. Next, it is difficult to properly perform cardio-pulmonary resuscitation (CPR) when a cardiac arrest situation occurs in an aircraft. Moreover, in the context of the COVID-19 pandemic, CPR is more difficult because medical staff and other passengers may also be exposed to infections. Therefore, we have summarized the principles of CPR on board and ways to perform CPR while keeping the safety of medical staff and other passengers in the COVID-19 situation. The sudden change of gravity caused by space travel has various effects on the human body, and among them, the effect on the immune system is profound. Therefore, we reviewed the research methods to study the effect of gravity on the immune system and the results. In addition, we analyzed the demographic characteristics and health status of immigrant visa applicants who intended to immigrate to the United States over the past five years. Next, through two case reports, we reported cases of determining physical fitness for aviation service in patients who recovered after receiving appropriate treatment for chronic myeloid leukemia or renal cell carcinoma.

First-principles Study of the Efficient Li-ion Insertion into TiO2 anatase Nanolayer for High Performance Li-ion Battery

  • Shin, Dong Jae;Kim, Yong Hoon
    • EDISON SW 활용 경진대회 논문집
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    • 제5회(2016년)
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    • pp.305-307
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    • 2016
  • We calculated Li ion migration energy barrier, applying three different models on Li ion insertion into $TiO_2$ nanolayers to elucidate the previously reported high rate of charge-discharge. With the existence of additional Li ion on the surface of $TiO_2$ structure, spontaneous insertion of Li ion into the second layer from the first layer was observed. Using this result, we showed the intrinsic property of $TiO_2$ structure and it has a contribution to the reported performance. In the end, we give a suggestion on the fabrication of $TiO_2-Graphene$ hybrid structure for Li ion battery electrode.

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