• Title/Summary/Keyword: 과학성

Search Result 35,130, Processing Time 0.066 seconds

Change of Physical Properties of Socks by Repeated Washing (반복세탁에 의한 양말의 물성변화에 관한 연구)

  • Song, Kyoung-Hun;Kim, Kyoung-A
    • The Journal of Natural Sciences
    • /
    • v.8 no.2
    • /
    • pp.191-198
    • /
    • 1996
  • We were investigated the change of shrinkage, pilling, tensile strength, color fastness and staining of Cotton, Nylon, Cotton/Nylon(60/40) socks after wearing and washing. From the experiment we found that color fastness of the color socks decreased corresponding to the frequency of wearing and washing. Our results showed that color fastness in the case of Cotton is best among them. Shrinkage was significant in Nylon/Cotton and Cotton socks. In the experiment of male and female socks, male showed a greater evidence of staining, shrinkage and pilling than female.

  • PDF

An Optimized Font Design for Hunminjeongeum Representation (훈민정음 표현을 위한 최적 폰트 설계)

  • Kim, Kyoungwook;Byun, Jeongyong
    • Annual Conference on Human and Language Technology
    • /
    • 2008.10a
    • /
    • pp.53-57
    • /
    • 2008
  • 1987년 정보교환용 부호가 완성음절형 부호계로 개정되면서 한글 음절 표현은 극히 제한되어 컴퓨터상에서 한글의 표현은 제약을 받게 되었다. 1446년 훈민정음이 공포된 후로 목판, 활자시대를 지나서 타자기를 만나면서 한자와 다른 길을 걸어왔다. 특히 컴퓨터시대가 되면서 한글은 타자 이상의 적합성을 가지고 있지만 훈민정음 창제원리에 대한 이해부족으로 음절문자로 분류하여 완성음절형 부호를 지원하게 됨에 따라서 많은 문제를 야기하고 있다. 국제표준인 유니코드에는 세가지 종류의 부호가 반영되어 있는데 음절문자 중심의 부호화이므로 훈민정음의 특성을 해치는 일이며 또한 한글의 과학성을 부정하는 일이기도 하다. 본 논문은 훈민정음 창제원리에 입각하지 않음으로 생긴 문제에 대한 근본적인 해결책으로 훈민정음을 표현하는 최적 폰트 설계 방안을 검토하고 현행의 한글부코드표준의 개선 방향을 제시하고자 한다.

  • PDF

Porous Silicon Microcavity Sensors for the Detection of Volatile Organic Compounds (휘발성 유기화합물 탐지용 다공성 실리콘 Microcavity 센서)

  • Park, Cheol Young
    • Journal of Integrative Natural Science
    • /
    • v.2 no.3
    • /
    • pp.211-214
    • /
    • 2009
  • A new porous silicon (PSi) microcavity sensor for the detection of volatile organic compounds (VOCs) was developed. PSi microcavity sensor exhibiting unique reflectivity was successfully obtained by an electrochemical etching of silicon wafer. When PSi was fabricated into a structure consisting of two high reflectivity muktilayer mirrors separated by an active layer, a microcavity was formed. This PSi microcavity is very sensitive structures. Reflection spectrum of PSi microcavity indicated that the full-width at half-maximum (FWHM) was of 10 nm and much narrower than that of fluorescent organic molecules or quantum dot. The detection of volatile organic compounds (VOCs) using PSi microcavity was achieved. When the vapor of VOCs condensed in the nanopores, the refractive indices of entire particle increased. When PSi microcavity was exposed to acetone, ether, and toluene, PSi microcavity in reflectivity was red shifted by 28 nm, 33 nm, and 20 nm for 2 sec, respectively.

  • PDF

A Study on Korean traditional local food historical, cultural and scientific content and service of Yeonggwang gulbi (한국 지역 전통식품 영광굴비의 역사·문화·과학적 콘텐츠 설계 및 서비스 방안 연구)

  • Jang, Dai-Ja;Kim, Sang-Hee;Kim, Hee-Jin
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2016.05a
    • /
    • pp.221-222
    • /
    • 2016
  • 본 논문은 한국 지역 전통식품의 콘텐츠 우수성을 입증하기 위해 역사, 문화, 과학적 근거 발굴과 핵심요소의 정보 체계화를 통해 명확하고 신뢰성 있는 콘텐츠를 설계하였다. 지역전통식품의 핵심요소를 위한 정보 수집 및 분석과 통합분류를 체계화하여 영광굴비를 시범 콘텐츠로 구축하였다. 따라서 본 연구를 통하여 지역을 대표하는 한국 전통식품의 우수한 기술과 전통성을 근거기반의 정보서비스가 가능하도록 하였다.

  • PDF

전략경영정보(戰略經營情報)의 효과적 관리(管理)

  • Redman, Louis N.
    • Journal of Information Management
    • /
    • v.15 no.4
    • /
    • pp.189-194
    • /
    • 1982
  • 경기(競技)필름은 팀의 성과(成果)를 평가(評價)하는데나, 어떤 스포츠환경(環境)에서의 의사결정(意思決定)을 위해 하나의 귀중한 자원(資源)이 된다. 경영정보(經營情報)시스팀은 하나의 경영활동(經營活動)을 평가(評價)하는데 있어서 이와 똑같은 목적을 위해 도움을 주며, 소중한 자원(資源)인 것이다. 옛날의 한 금언(金言)을 의역(意譯)해본다면, 문제(問題)는 이겼느냐, 또는 졌느냐가 아니라 어떻게 그 게임을 운영(運營)(management)했느냐 하는 점이다. 잠재력(潛在力)을 평가(評價)하고, 나중의 작전계획(作戰計劃)을 개발 하는데 있어 반드시 기억해 두어야 할 말이다. 우리가 그 시스팀의 욕구(欲求)를 식별(識別)해냈다고 할 때, 성과(成果)가 진정하게 측정(測定)되었는가 하는 것은 기대(期待)에 비해 나타난 결과들을 평가(評價)해봄으로써 판단할 수 있다. 기업경영(企業經營)의 성공(成功)은, 이 비교(比較)가 얼마나 잘 될 수 있는가에 달려있으며, 제자원(諸資源)의 질(質)을 높이고, 새로운 기회(機會)을 개발하는데 있어, 정보(情報)를 얼마나 효과적(效果的)으로 활용(活用)하는가에 또한 달려있다고 하겠다. 잘 정의(定義)돼 있고 초점이 맞는 경영정보(經營情報)시스팀은 이러한 목적(目的)을 위해 필수불가결한 것이라 하지 않을 수 없다.

  • PDF

Effects of ${\gamma}$-Irradiation on the Volatile Organic Compounds from Cuscutae Semen (Cuscuta chinensis Lam) (감마선 조사가 기능성 식품 소재인 토사자의 휘발성 유기성분에 미치는 영향)

  • Yang, Su-Hyeong;Kim, Kyong-Su
    • Journal of Integrative Natural Science
    • /
    • v.1 no.2
    • /
    • pp.115-121
    • /
    • 2008
  • This study was performed to examine the effect of ${\gamma}$-irradiation on the volatile organic compounds of Cuscutae Semen (Cuscuta chinensis L.). The volatile organic compounds of non-irradiated and 10 kGy ${\gamma}$-irradiated Cuscutae Semen were isolated using SDE apparatus and analyzed by GC/MS. Limonene, ethanol, (E)-2-decenal, hexadecanol, nonanoic acid and nonanal were detected as dominant compounds. Before irradiation, the total concentration of volatile organic compounds of Cuscutae Semen was approximately 189.90 mg/kg. After irradiation at 10 kGy, total concentrations increased to 299.46 mg/kg, but, the profile of volatile compounds including the essential oils of Cuscutae Semen was not differ from non- and irradiated sample. Therefore it was improved the extraction yield of useful compounds such as limonene, menthol, piperitone and isomenthone by irradiation.

  • PDF

Probabilistic Load Analysis for Tailplane Considering Uncertainties in Design Variables (설계변수의 불확실성을 고려한 미익 하중의 확률론적 해석)

  • Choi, Yong-Joon;Kim, In-Gul;Lee, Seok-Je
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.13 no.6
    • /
    • pp.1043-1050
    • /
    • 2010
  • This paper examined the probabilistic load analysis for the tailplane during pitching maneuvering in the conceptual aircraft design phase. The flight load analysis based on the probabilistic distribution of design variables are compared with the results of the deterministic analysis. Two forms of variable distribution are used in this paper. One is standard normal distribution, the other distribution is calculated from the results of short-period longitudinal equation of aircraft motion. The influence of the distribution parameter on the probabilistic load analysis was investigated and the significant design variables that have an impact on the mean and variance of probabilistic load were identified. The comparison indicates that probabilistic load analysis provides more reliable probabilistic load distribution for the structural design than the traditional deterministic analysis.

A Study on the Improvement of Defense Specification Suitability Review System (국방규격 적합성 검토체계 개선에 대한 고찰)

  • Kim, Sungkyung;Hur, Jangwook
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.19 no.5
    • /
    • pp.662-668
    • /
    • 2016
  • Defense specification suitability review task means to examine whether to need enactment, amendment or abolition of defense specification, and realistic and efficient review environment are urgently needed by improving system. For the promotion of efficient tasks, the cycle of defense specification suitability review needs to be changed to 5 years for active specifications and 10 years for inactive specifications. To simplify the standards of defense specification suitability review, the distinction between prior management items and general management items should be abolished and the number of review items need to be reduced from ten to three. Also, in order to promote substantial defense specification suitability review, a system improvement is needed to utilize retired professionals from defense acquisition related agencies.

Detecting Seed-borne Fungi of Sesame and Virulance of Corynespora cassicola (참깨 종자전염진균(種子傳染眞菌)의 검정(檢定) 및 Corynespora cassicola의 병원성(病原性))

  • Yu, Seung-Hun;Park, Jong-Seong
    • Korean Journal of Agricultural Science
    • /
    • v.6 no.1
    • /
    • pp.27-32
    • /
    • 1979
  • Seed samples of sesame (Sesamum indicum L.) from Chung-nam Provincial Office of Rural Development were infected by 12 fungi. Alternaria sesamicola, A. tenuis and Corynespora cassicola were the predominant fungi. Except C. cassicola, all fungi were almost completly reduced and wipid out the infections by pretreatment with chlorine. Plating of seed components also indicate that C. cassicola was well-established infections. In infection experiment C. cassicola produced severe leaf and stem spots and blights on sesame plants and showed severe seed and seedling rot.

  • PDF

Photoreactions of Photofunctional polymer Bearing Acyloxyimino Groups and Its Applications (아실옥사이미노기를 갖는 광기능성고분자의 광반응과 이용)

  • Song, Gyeong-Hyeon
    • The Journal of Natural Sciences
    • /
    • v.5 no.1
    • /
    • pp.59-65
    • /
    • 1992
  • In this study, new photosensitive polymers bearing acyloxyimino(AOI) group were prepared and the relationship between photochemical reactions of the polymers and changes of their physical properties was investigated. It was found that main reaction of these copolymers depended on the structure of polymer mainchain. From the view point of amino groups formation, acryl type polymers were superior to methacryl type polymers. On the other hand, in the case of mathacryl type polymers, mainchain scissions and formation of double bonds occurred very effectively. Applications of these copolymers to photofunctional polymers were also discussed.

  • PDF