• Title/Summary/Keyword: natures

Search Result 234, Processing Time 0.034 seconds

A Study on Improving the Public Technology Procurement Policy for Reinforcing the Efficiency of R&D in SMEs : In Consideration of Joining the Green Growth Plan (중소기업의 녹색성장 참여촉진을 위한 기술개발제품 공공구매제도 개선방안 연구)

  • Han, Sang-Yun;Son, Byoung-Ho
    • Journal of Korea Technology Innovation Society
    • /
    • v.13 no.2
    • /
    • pp.310-331
    • /
    • 2010
  • Recently, US, EU and major development countries, including Korea, have set green growth strategy the for national robust economic growth. Green growth strategy was also adopted as economic stimulus policy. Korea also have established some policies for green growth such as Green Growth National Strategy and 5-years Plan. Thought the SMEs play an important role as the innovative driver that can supply material and components for final products, there are few policies for joining green growth strategy. So, the purpose of this paper is to explore the current extent of public procurement for technology-development products and propose the betterment of it. Firstly, we analyzed the public procurement-policies of major countries to kinds of policy-purposes and types including Korea. and then we deducted the needs to policy utilizing the public procurement for joining the SMEs to green growth strategy. Second, we proposed that the objects of purchase conditional public procurement policy be extent to the pre-commercial technologies. The pre-commercial technologies could be performed further R&D by some other compaines or pubic institutes. Considering the natures of green technology-such as quasi-public-, this improvement would be helpful for SMEs which could create initial-marketplace and sales-references.

  • PDF

A Study on the Simulation of Complex Permittivities of Carbon Black/Epoxy Composites at a High Frequency Band (고주파에서의 카본 블랙/에폭시 복합재료 복소유전율 모사에 대한 연구)

  • Kim Tae-Wook;Kim Chun-Gon;Kim Jin-Bong
    • Composites Research
    • /
    • v.18 no.3
    • /
    • pp.14-20
    • /
    • 2005
  • This paper presents a study on the permittivities of the carbon black/epoxy composite at microwave frequency. The measurements were performed at the frequency band of $1\;GHz\~18\;GHz$. The experimental data show that the complex permittivities of composites depend strongly on the natures and concentrations of the carbon black dispersion. The frequency characteristics of dielectric constants and ac conductivities of composites show the good conformity with descriptions of the percolation theory, satisfying the general scaling relation. The measuring frequency band is over the critical frequency, below that the ac conductivities of composites are constant to the frequency. The values of dielectric constants and ac conductivities have consistent relationships with the carbon black concentration. The A new scheme, that is a branch of Lichtenecker-Rother formula, is proposed to obtain a mixing law to describe the complex permittivities of the composites as function frequency and concentration of carbon black.

A study of the literature and life of Gosan Yun Sun-do(孤山 尹善道) (고산(孤山) 윤선도(尹善道)의 삶과 문학(文學) 소고(小考))

  • Oh, Sun-Ju
    • Sijohaknonchong
    • /
    • v.23
    • /
    • pp.241-260
    • /
    • 2005
  • This study is about literature of Gosan Yn Sun-do(孤山 尹善道) and his life that haunted Gang-ho(江湖) natures and political realities repeatedly, Especially, it considers what aspect of cognition he had about two realities, Gang-ho(江湖) and the Imperial Court(朝廷) and how it throws image on his works. And through these, it is examined what his viewpoint of literature is. First of all, through a memorial to the Throne that put him in first political trial, we can know that he was so strict that he didn't compromise with political realities and at the same time, he has a strong political inclination hidden behind his character. These two aspects are reflected on his works as his confrontation will and his agony between the two realities two realities. And through analysing the contents of <金鎖洞記> tt recollect landscapes of 金鎖洞 where Yun Sun-do mostly stayed, it can be found that his total viewpoints of nature is complacency. This complacency including the satisfaction of Gang-ho life and his ethics is intactly reflected on his works. Finally, it is clearly revealed that he tried to embody the principle of nature and ethics in his literary works and his reference to the literary as well.

  • PDF

Inverted Indexes for XML Updates and Full-Text Retrievals in Relational Model (관계형 모델에서 XML 변경과 전문 검색을 지원하기 위한 역 인덱스 구축 기법)

  • Cheon, Yun-Woo;Hong, Dong-Kweon
    • The KIPS Transactions:PartD
    • /
    • v.11D no.3
    • /
    • pp.509-518
    • /
    • 2004
  • Recently there has been some efforts to add XML full-text retrievals and XML updates into new standardization of XML queries. XML full-text retrievals plays an important role in XML query languages. of like tables in relational model an XML document has complex and unstructured natures. We believe that when we try to get some information from unstructured XML documents a full-text retrieval query is much more convenient approach than a regular structured query XML update is another core function that an XML query have to have. In this paper we propose an inverted index to support XML updates and XML full-text queries in relational environment. Performance comparisons exhibit that our approach maintains a comparable size of inverted indexes and it supports many full-text retrieval functions very well. It also shows very stable retrieval performance especially for large size of XML documents. Foremost our approach handles XML updates efficiently by removing cascading effects.

Structure and Bonding of Ni(C6H4-nFn)(CO)2 (C6H4=benzyne, n=1-4) Complexes (Ni(C6H4-nFn)(CO)2 (C6H4=benzyne, n=1-4) 착물의 구조 및 화학결합)

  • Ghiasi, Reza;Hashemian, Saeedeh;Irajee, Oranoos
    • Journal of the Korean Chemical Society
    • /
    • v.55 no.2
    • /
    • pp.183-188
    • /
    • 2011
  • The electronic structure and properties of Ni$(C_6H_{4-n}F_n)(CO)_2$ ($C_6H_4$=benzyne, n=1-4) complexes have been investigated using hybrid density functional B3LYP theory. Both aromatic natures and nucleus independent chemical shift (NICS) of the benzyne rings have been analyzed. Among mono-, di-, and tri-fluorinated complexes, 3-F, 3,6-F, and 4-H are the most stable isomers, respectively. NICS values calculated at the several points above the ring centers are consistent with those based on the relative energies of the complexes. The atoms in molecules (AIM) analysis indicates that Ni-C bond distance is well correlated with the electron density of a ring critical point (${\rho}_{rcp}$) in all species.

A Study on the Middle Age Costume Expression of France (프랑스 <마카이요프스키 성경(Maciejowski Bible)>의 중세복식 표현에 관한 연구)

  • Kim, Hee-Jung
    • The Research Journal of the Costume Culture
    • /
    • v.16 no.2
    • /
    • pp.263-277
    • /
    • 2008
  • In picture bible, the picture is helpful for showing story more vividly and specifically and it is helpful for finding the meaning of bible hidden behind familiarity. It plays the role of the most powerful testimony and expression, with which human provides himself. The purpose of study was to grasp the relation among historical background of the middle age, human's characteristic and symbolic color by considering the fact that the costume expressed in Maciejowski Bible, which is a picture bible of the middle age and observing type, color and decoration of costume. Among 46 folios organizing Maciejowski Bible, 129 pictures explaining the Book of Genesis, the Book of Exodus, the Book of Leviticus, the Book of Numbers, the Book of Deuteronomy, the Book of Joshua and the Book of Judges, which belong to the former 400 years of the old Testament, were analyzed for people's costumes. The pictures shown in Maciejowski Bible portrays object, costume and behavior on the background of France of the 13th century so we can find out the precious natures of middle age's costume, weapon and armor. Especially, the portrait about finger armor of chain mail attached in hauberk becomes the outstanding evidence that can encroach the discussion over whether it was used in the end of 1300s. Regarding costumes of main characters, they wore chemise and braies as underwear, wore tunic or cotte having various lengths from the length reaching knee to the length reaching 8round as basic costume and wore mantle with different-colored lining and hose with various colors. In the war picture, we can see hauberk made with chain mail and cyclas with long slit, which was worn over hauberk, barrel helmet, norman helmet and steel school cap. Regarding cap. man usually wore coif, beret, shade-shaped cap, straw hat and woman wore the decoration using veil and hairlace and used the method to wrap whole hair with net. As the colors used in the costume of the picture bible, scarlet, blue, green and brown were usually used in order. They usually wore costumes decorated splendidly with the colors haying hish brightness and chroma.

  • PDF

A Study on the Conservation of Library Materials (도서관자료(圖書館資料) 보존(保存)에 관한 연구(硏究))

  • Kweon, Kie-Won
    • Journal of the Korean BIBLIA Society for library and Information Science
    • /
    • v.6 no.1
    • /
    • pp.179-213
    • /
    • 1984
  • The history of recording and conserving for maintenance the human's memory from ancient times to modern's has brought about a lot of changing process of the recorded information media with developing in culture, and each society has made important recorded materials in his library as essentially the social apparatus. But most of them that were damaged by factors of the natural disaster, humidity, temperature, light, fungi and insects in the library, and were resulted in deterioration and losing the numerous materials. For removing the inevitable phases repeated, there are studying for counterplan of the fundamental environment factors about preservation, restoration and chemical research of materials in advanced countries, but I get a few researches about protecting the cultural properties. Therefore I research the survey of the actual conditions on 72 university libraries centering around them, and then I have researched the collection rate 81 percent, 58 university libraries. (local : 35, in seoul : 23) As the result of this research, I propose the model of the environment factors of conserving the library materials. 1) To apply the equipment of processing the radiant energy to the new construction and buildings. 2) To remove factors that occur fungi and insects by facilities being controlled relative humility, temperature, and to equip the ventilation arrangement in the library. 3) To shelve all acquired and bound materials after proceeding the vacuum fumigator. 4) Those who want to enter into the library stack were surely taken in sterilzing their hands and shoes, and must put on the gown. 5) To use the vacuum dusting thing (machine) for removing the dust without spreading out the floor of the library at any time. 6) To set up the gas automatic fire extinguisher worked by smoke sensor. 7) To assist the research into the preservation, natures and environment of recorded materials, and to supply financial funds for librarian. 8) To hold regularly the workshop be able to educate the methods of preservation materials by the constant system. (Library Association) 9) To add to responsibilities on certification of preservation materials for librarian. 10) To hold the constant committee system in each library. 11) To keep up with the ideal environment (humidity, temperature, light, ventilation, etc.) of preservation materials in the arrangement room, and to put on the gown.

  • PDF

Conservation of Waterlogged Wooden Finds Excavated in Wet-Site (저습지 출토 목재유물의 보존과 현황)

  • Yi, Yong Hee
    • Journal of Conservation Science
    • /
    • v.6 no.2 s.8
    • /
    • pp.126-140
    • /
    • 1997
  • There were some cases in the past that waterlogged wooden finds were neglected and damaged severely because adequate methods of conservation processing could not be found. However, since a wooden ship unearthed in Anapji of Kyongju was processed by poly(ethylene glycol) (PEG) impregnation method in 1975, most of waterlogged wooden finds have been processed by diverse scientific methods. Most commonly-used conservation processing methods of waterlogged wooden finds in Korea are PEG impregnation method, alcohol-ether-resin method and vacuum freeze-drying method. New methods developed recently in Europe and Japan such as sucrose method, sugar-alcohol method and higher alcohol method are also being studied here. The most important task in conservation processing of waterlogged wood is to find good impregnation materials suitable to Korean climate and environments and develop their application methods. For efficient conservation processing, it is important to know the natures of finds and impregnation materials and relation between impregnation and drying condition. To achieve it, many experiments and studies are needed.

  • PDF

Incremental Clustering Algorithm by Modulating Vigilance Parameter Dynamically (경계변수 값의 동적인 변경을 이용한 점층적 클러스터링 알고리즘)

  • 신광철;한상용
    • Journal of KIISE:Software and Applications
    • /
    • v.30 no.11
    • /
    • pp.1072-1079
    • /
    • 2003
  • This study is purported for suggesting a new clustering algorithm that enables incremental categorization of numerous documents. The suggested algorithm adopts the natures of the spherical k-means algorithm, which clusters a mass amount of high-dimensional documents, and the fuzzy ART(adaptive resonance theory) neural network, which performs clustering incrementally. In short, the suggested algorithm is a combination of the spherical k-means vector space model and concept vector and fuzzy ART vigilance parameter. The new algorithm not only supports incremental clustering and automatically sets the appropriate number of clusters, but also solves the current problems of overfitting caused by outlier and noise. Additionally, concerning the objective function value, which measures the cluster's coherence that is used to evaluate the quality of produced clusters, tests on the CLASSIC3 data set showed that the newly suggested algorithm works better than the spherical k-means by 8.04% in average.

Collision between Technology and Politics in Korea's Nuclear Policy (한국의 원자력정책을 둘러싼 기술과 정치의 충돌)

  • Hong Jung-Jin;Won Byung-Chul
    • Journal of Science and Technology Studies
    • /
    • v.2 no.1 s.3
    • /
    • pp.135-156
    • /
    • 2002
  • The view of technology is largely divided into 2 theories: (1) the theory of autonomous technology that claims technology's own development logic and momentum, (2) the theory of social determinism that regards technology as reflection of political choices. Autonomous technologists read our society in the language of technology and social determinists read our technology in the language of society. This paper tries to analyze that conflicts between government and environmental group in nuclear policy, especially radioactive waste disposition policy reflect collisions between autonomous technologists and social determinists representing technology and politics, respectively. On the surface, such collisions are occurred in rational, ethical and economical aspects. It maintains, however, in depth, they are about solution means to problems from which technologies derived. Also, it suggests that one of the alternatives to avoid inevitable collision may be interaction approach based on intertwining technology with society. More understanding of political natures and control possibilities for technology is needed because interaction approach is founded on this understanding. Finally, to help forming the Korea's nuclear utilization policy from now on, it gives 2 case studies compared France with Germany where expanding and contracting nuclear utilization policy, respectively.

  • PDF