• 한국초등과학교육학회지:초등과학교육
• /
• 제24권4호
• /
• pp.476-486
• /
• 2005

The purpose of this study was to compare the biology parts of the elementary school science textbooks of South and North Korea. For this purpose the contents and the names of organism introduced in the textbooks are compared and analyzed. As results of this study, there are a lot of differences in the content and names of organism in the textbooks. Life science in the elemenatry school science of North Korea ($46.9\%$ in 3th grade, $32.7\%$ in 4th grade) is treated more seriously than South Korea. The most part of North Korea textbooks are occupied with the names and values of various organisms, and the using method of them. The common contents of both textbooks are only $8.54\%$ of total contents of elementary school science of South Korea. Also only 39 names of organism are introduced in the both textbooks of South and North Korea. For the science curriculums establishment after unification, it should be the most important efforts to understand the cause of these differences, and to analyze those differences in contents and organisms introduced in the textbooks of South and North Korea.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2005년도 춘계종합학술대회
• /
• pp.663-666
• /
• 2005

최근 디지털 컨텐츠에 대한 무분별한 저작권 기술개발로 인해 컨텐츠 제공자와 소비자들 사이에 호환성, 컨텐츠 보호, 컨텐츠 유통 등의 문제가 야기되고 있다. 따라서 MPEG(Moving Picture Expert Group)-21 프레임워크는 저작권 관리를 위해 XML(eXtensible Markup Language)에 기반 한 저작권 표현 언어인 REL(Right Expression Language)을 제안하였다. 이에 본 논문에서는 MPEG-21 프레임워크의 이해 없이도 쉽게 컨텐츠에 대해 효율적으로 저작권 생성 및 편집이 가능한 REL 문서편집 시스템과 REL 문서의 소비 방법을 제시하는 클라이언트 시스템을 설계 및 구현 하였다.

• 복식
• /
• 제66권6호
• /
• pp.135-148
• /
• 2016

This study aimed to understand whether or not academic outcomes in digital studies shown in detailed field of costume were generated appropriately according to the development of digital technology by analyzing contents of studies in the digital-related studies, which were conducted with a background of the digital age. First, as a result of frequency of digital-related theses by the age of 'Internet Age(1994-2000)', 'Digital Age(2000-2009)', and 'Smart Life Age(After 2010)', which were classified according to the digital environmental changes, the number of theses increased drastically based on the transition point of each age. Second, representative keywords that appeared in each age included 'digital' and 'Internet' in the Internet Age, and 'digital', 'smart', 'Internet', '3D', and 'wearable' were shown in the 'Digital Age' and 'Smart Life Age'. Third, results of analysis according to the field of costume show that relevant studies were conducted in three fields of marketing/information, clothing construction and fashion design in the Internet Age, whereas the Digital Age produced relevant studies in all fields, and Smart Life Age was characterized by increase in studies in the field of fashion design and clothing construction. Fourth, results of analysis according to the contents of study show that relevant studies in the Internet Age were shown only in two subjects of 'preliminary study and trend of study' and 'studies using technical programs', and 'preliminary study and trend of study' decreased, but relevant studies in other fields of subject increased in the Smart Life Age. As shown above, relevant studies appeared as various subjects in many different detailed fields of costume in costume studies according to the stream of the Smart Life Age, which is growing fast recently, and is considered an inspiring result for development of studies in the field of costume according to the environment of the age.

• 펄프종이기술
• /
• 제30권2호
• /
• pp.47-54
• /
• 1998

Refining is one of the most important processes of fiber treatment that provides optical and physical properties of final paper products. The evaluation method of refining progress is usually freeness (CSF) or wetness (SR) test because of its rapidity and convenience. However, there are some deficiencies in using freeness or wetness test to evaluate pulp fibers accurately because its results are more influenced by fines contents than extent of fibers treatment. The objective of this study is to show the deficiency of wetness in evaluating the refining process. For this, beating is done by varying the beating load. Handsheets are made after beating until 25 and $32^{\circ}C$ SR, and then paper properties are measured. Refined fibers are analyzed by fiber length, fines contents, curl, kink, WRV, and zero-span tensile strength. The results show that longer beating time is required to reach the same wetness at lower beating load. There are differences in the average fiber length, distribution curve of fiber length, fines contents, curl, kink, WRV of long fiber fraction, drainage time, and zero-span tensile strength of rewetted sample at different beating load. At the low beating load in the same wetness, apparent density, breaking length, burst strength, and tear strength are higher, while opacity and air permeability are lower than those of the high beating load. Using Page s equation, which shows the relationship among tensile strength, intrinsic fiber strength, and interfiber bonding strength, interfiber bonding strength is calculated and analyzed to explain final paper properties. At $25^{\circ}C$ SR, interfiber bonding strength is only slightly higher at 2.5kgf beating load, while the intrinsic fiber strength is substantially higher. At $32^{\circ}C$ SR, intrinsic fiber strength is a little bit higher at 2.5kgf beating load, and interfiber bonding strength is remarkably higher than those of 5.6kgf beating load. These results can be used to explain the different properties of the final paper at selected beating loads.

• 한국콘텐츠학회논문지
• /
• 제13권3호
• /
• pp.485-494
• /
• 2013

본 논문에서는 내용 분석법(content analysis)과 Romey 분석법을 적용하여 공업계 고등학교 '정보 기술 기초' 교과서를 분석하였다. 내용 분석법으로 교과서의 구성 체계와 내용을 분석하였으며, Romey 분석법으로 4개의 분석요소인 본문, 자료, 활동, 평가에 대한 탐구적 경향을 분석하였다. 내용 분석법을 적용한 결과, 교과서를 구성하는 전체 페이지, 읽을거리, 영역별 개념의 수, 응용 소프트웨어 활용에서 교과서별로 차이가 있는 것으로 나타났다. Romey 분석법을 적용한 결과, 교과서 본문이 탐구적 경향이 낮은 권위적인 형태인 것으로 확인되었으며, 분석요소 중 활동에서 2개 교과서 모두 탐구적 경향이 높은 것으로 나타났다. 본 논문에서는 분석 결과를 바탕으로 '정보 기술 기초' 교과서의 개선 방안을 제안하였다.

• 농약과학회지
• /
• 제4권4호
• /
• pp.31-34
• /
• 2000

농약제조에 사용되는 chlorothalonil 원제 중 유해 부성분으로 규제하고 있는 hexachlorobenzene (HCB)의 함량을 조사하였다. 1996년부터 2000년까지 5년간에 걸쳐 3개 원제공급선으로부터 시료 32점을 발취하여 전자포획검출기(GLC/ECD)를 이용한 gas chromatography법으로 분석한 결과 HCB 함량은 최저 0.0036%부터 최고 0.0330%까지의 분포를 보였으며, 평균치는 0.0219%이었다. 발취시료 중에서 규제기준인 0.05%를 초과한 시료는 없었다. 또한 국내에서 1995년부터 1999년까지 5년간 chlorothalonil의 사용량을 기준하여 HCB의 농업환경 중에 투입된 양을 산출한 결과 연평균 약 77kg이었다.

• 정보처리학회논문지D
• /
• 제11D권7호
• /
• pp.1499-1506
• /
• 2004

본 논문에서는 화상 채팅에 대한 실태 분석, 접속 형태 분석 그리고 이외 음란성을 기술적으로 차단하기 위한 방법론을 제안하고자 한다. 현재 음란사이트를 차단하기 위한 기술적 방법은 있지만 화상 채팅에 있어 음란 행위를 선택적으로 차단하기 위한 기술적 해결 방안은 없는 실정이다. 기존의 음란사이트 차단 방법은 목록 기반과 단어 기방 방법인바 이는 그 내용이 처음부터 끝까지 무조건적으로 차단해야 하는 음란사이트 차단에는 적합한 방법이다. 그러나 화상 채팅사이트는 개설되어 있는 채팅방중에 음란성을 가지는 즉, 문제가 되는 채팅방만 선택적으로 차단을 해야하기 때문에 기존의 방법으로는 차단이 불가능하다. 따라서 본 논문에서는 기존의 음란사이트를 차단하기 위한 방법들 즉, 목록 기반 방법과 단어 기반 방법으로는 화상 채팅 사이트에서 이루어지고 있는 음란 행위를 차단할수 없으므로 이를 내용 기반으로 문제가 되는 채팅방만을 선택적으로 차단하기 위한 방법론을 제시함을 본 연구의 목적으로 한다. 최종적으로 본 연구는 내용 기반으로 화상 채팅방에서 문제가 되는 채팅방에 대한 영상 차단, 음향 신호 차단을 행하여 청소년들을 보호하는 데 기여하고자 한다. 본 연구의 유용성을 입증하기 위해 불건전한 음란 장면과 음향에 대해 실험을 수행하였으며 실험 수행 결과 음란의 장면이 담긴 영상과 음향 신호를 정확히 차단할수 있었으며 이를 통해 화상 채팅방의 건전한 사용 및 이용을 유도할수 있을 것으로 여겨진다.

• 한국재료학회지
• /
• 제21권4호
• /
• pp.187-191
• /
• 2011

Prior austenite grain size plays an important role in the production of high strength hot-rolled steel. This study investigated the effect of Ti and C contents on the precipitates and prior austenite grain size. Steel with no Ti solutes had prior austenite grain size of about 620 ${\mu}m$. The addition of Ti ~ 0.03 wt.% and 0.11 wt.% reduced the prior austenite grain size to 180 ${\mu}m$ and 120 ${\mu}m$, respectively. The amount of Ti required to significantly decrease the prior austenite grain size was in the range of 0.03 wt.%. However, the amount of carbon required to significantly decrease the prior austenite grain size was not present from 0.04 wt.% to 0.12 wt.%. Oxides of Ti ($Ti_2O_3$) were observed as the Ti content increased to 0.03 wt.%. The specimen containing 0.11 wt.% of Ti exhibited the complex carbides of (Ti, Nb) C. The formation of Ti precipitates was critical to reduce the prior austenite grain size. Furthermore, the consistency of prior austenite grain size increased as the carbon and Ti contents increased. During the reheating process of hot-rolled steel, the most critical factor for controlling the prior austenite grain size seems to be the presence of Ti precipitates.

• 한국식품조리과학회지
• /
• 제21권5호
• /
• pp.629-636
• /
• 2005

This study was carried out to investigate of the quality characteristics of the starch Oddi Dasik(MSOD) manufactured with various addition levels (0, 5, 10, 18 and 28%) of mulberry fruit (Oddi) juice (MFJ), with various levels(55%, 50%, 45%, 37% and 27%) of sucrose syrup, and with the ratio of rice powder: mungbean starch (1:4) according to the traditional Korean Dasik (a kinds of cookie) methodology. The nutritional components of Oddi and MSOD were examined, and sensory evaluation and physical tests of MSOD added MFJ were conducted. The results are summarized as follows. In Oddi, the contents of moisture, crude fat, crude protein, crude ash, and vitamin C, and the levels of acidity, pH and sugar were 88.45%, 0.245%, 2.23%, 0.88%, 53.20 mg%, 8.00%, 4.41 and 11.0 Brix%, respectively. In MSOD (Oddi 10%), the contents of moisture, crude fat, crude protein, and crude ash, were 22.8%, 0.117%, 9.2% and 0.8%, respectively, and were all increased with increasing MFJ amount. In MSOD (Oddi 10%), the contents of Ca, Mg, K and Fe were 63.2 mg%, 70.9 mg%, 376.0 mg% and 7.7 mg%, respectively. and were increased with increasing MFJ amount. For the establishment of the additional amount of MFJ, sensory evaluation and physical tests were conducted. From the total characteristics of sensory evaluation, the MSOD with 10% MFJ was judged as the best. Color L and b values of MSOD significantly decreased and a value increased with increasing MFJ percentage. Hardness, gumminess, adhesiveness and chewiness among the texture characteristics of MSOD were significantly increased with increasing MFJ amount. However, there were no significant differences in springiness and cohesiveness of the MSOD. In conclusion, the optimal added amount of MFJ for the manufacture of the MSOD was proposed to be 10% of the total weight.

• 펄프종이기술
• /
• 제38권3호
• /
• pp.29-37
• /
• 2006

To use bamboo in the pulp industry, the anatomical characteristics of 60-day-old, 1-year-old, 2-year-old, and 3-year-old moso bamboo (Phyllostachys pubescens Mazel), and the characteristics of fiber and sheet of alkali pulp made of moso bamboo were investigated. Moso bamboo is composed of metaxylens and parenchyma cells in the inner part of the wall, and thick-walled small bundle sheathes near the outer walls. Moso bamboo showed the heterogeneity in anatomical structure. The longest fibers were shown in the middle part, and the widest width in the inner part. The lignin contents were 14.4% in 60-day-old bamboo, which was not lignified yet. The lignin contents in bamboo above 1 year were approximately 35%. The yields of alkali pulp of moso bamboo were in the range between 41 and 47%, and the yields tend to decrease with the increase of ages. The lignin contents of 60-day-old bamboo were 2.1% and those of bamboo above 1 year showed approximately 4% to 5% increment. The length, width, and curl index of fiber in alkali pulp appeared to be similar in all ages. However, coarseness increased slightly with the increase of bamboo ages. The distribution of long fiber was shown much in 60-year-old bamboo. The optical and mechanical properties of moso bamboo tended to decrease with the increase of bamboo age.