• 제목/요약/키워드: 1990′s

검색결과 6,067건 처리시간 0.028초

문헌을 통한 국내 뇌성마비의 80년대부터 90년대까지의 동향 연구 (From reference, among 1980's through 1990's in Korea Cerebral Palsy Secular Trends Search)

  • 노효련;안소윤
    • The Journal of Korean Physical Therapy
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    • 제13권2호
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    • pp.459-465
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    • 2001
  • As the developing of the perinatal medicine, the survival rate of preterm infants are increasing. Viceversa the children with cercbral palsy is increasing also compare to the developing of the perinatal medicine The purpose of this study was to identify the relationship between the preterm infants and the children with cerebral palsy and their domestic circumstance in 1980 and 1990. And would like to introduce the way how to handle the children with cerebral palsy

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한국의 연초 병학 연구사 (The Research Trajectory of Tobacco Pathology in Korea)

  • 이영근
    • 한국연초학회지
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    • 제35권1호
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    • pp.62-84
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    • 2013
  • The amount and diversity of tobacco pathology research in Korea depend on the change of tobacco cultivation area. Also, the tobacco pathology research was highly influenced by the scientific development of general plant pathology during the period from 1970's to 1990's. Since 1990, the rapid decrease of the tobacco cultivation area resulted in significant decrease of the research manpower. Thus, I dare to foretell few novel studies on tobacco pathology in near future. This review summarizes a research history of tobacco pathology, at which it was once flourished in Korea.

1990년대 미국의 수학전쟁과 몇 가지 시사 점 (Math War in America in 1990's and Its Implications)

  • 김연미
    • 한국수학교육학회지시리즈A:수학교육
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    • 제43권1호
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    • pp.1-12
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    • 2004
  • We have studied the issues of the current math war in America. Traditionalists and the reformers have been arguing about the curriculums, teaching methods, use of calculators, basic skills, and assessment methods in K-12 mathematics. They both have strengths and weaknesses depending on the situation have contributed for the development of mathematics education. Instead of choosing between traditionalists and the reformist sides, we suggest to adopt an eclectic view point i.e., rigor and creativity, memorization and understanding that may seem at odds with each other are quite compatible and mutually reinforcing. Also teacher's deep knowledge in mathematics is extremely important as his/her knowledge in pedagogy.

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The Synthesis of Selectively Substituted p-Acethylcalix[4]arene

  • Kwanghyun No;Mi Sook Hong
    • Bulletin of the Korean Chemical Society
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    • 제11권1호
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    • pp.58-59
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    • 1990
  • A method is described for the selective functionalization of calix[4]arene at the para positions of the phenyl rings. The diametrically substituted calix[4]arene dimethyl ether 3, obtained from the treatment of calix[4]arene 2 with methyl iodide in the presence of $K_2CO_3$, is converted to the diacetyloxy calix[4]arene dimethyl ether 4. This compound undergoes Fries rearrangement to yield the diametrically p-diacetylcalix[4]arene dimethyl ether 5 in 68% yield.

Enhanced Electrogenerated Chemiluminescence of Tris (2,2'-bipyridyl) Ruthenium (II)-$S_2O_8^{2-}$ System by Sodium Dodecyl Sulfate

  • Kang, Sung-Chul;Oh, Soo-Il;Kim, Kang-Jin
    • Bulletin of the Korean Chemical Society
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    • 제11권6호
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    • pp.505-508
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    • 1990
  • The electrochemical reduction and electrogenerated chemiluminescence (ECL) of $Ru(bpy)_3^{2+}-S_2O_8^{2-}\;in\;CH_3CN-H_2O$ solution were studied in the presence of sodium dodecyl sulfate (SDS) as an anionic surfactant. SDS enhanced the ECL and the fluorescence intensities and lengthened the duration of ECL due to the solubilization of reactants and possibly to the stabilization of ECL intermediates in the SDS micellar environment.

Preparation and Characterization of the L-prolino Co(III) Complexes with the Tetradentate $N_2O_2$-type Ligands

  • Jin-Seung Jung;Cheal Kim;Moo-Jin Jun
    • Bulletin of the Korean Chemical Society
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    • 제11권3호
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    • pp.235-238
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    • 1990
  • Complexes of the type[Co(T)(L-pro)], where T is the quadridentate $N_2O_2$-type ligand, N,N'-dimethylethylenediamine-N,N'-diacetate or N,N'-dimethylethylenediamine-N,N'-di-$\alpha$-butyrate, have been prepared. The complexes were separated into the two stereoisomers, $\Delta$-s-cis-[Co(T)(L-pro)] and $\Lambda$-s-cis-[Co(T)(L-pro)]. They were characterized by their proton magnetic resonance, absorption and circular dichroism spectra, elemental analyses.

A Commentary on Air Pollution Monitoring Programs in Korea

  • Ghim, Young-Sung;Kim, Jin-Young;Shim, Shang-Gyoo;Moon, Kill-Choo
    • Journal of Korean Society for Atmospheric Environment
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    • 제18권E1호
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    • pp.21-28
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    • 2002
  • Air quality issues in Korea rapidly changed at the beginning of the 1990s from primary to secondary pollutants starting in Seoul, the capital of Korea. The present frame of national air pollution monitoring networks was established between the end of the 1980s and the beginning of the 1990s. Background monitoring was initiated in the middle of the 1990s in response to increasing public concern about the long-range transport of air pollutants. Apart from the national monitoring, both routine and intensive measurements of fine particles have been made for research purposes since the middle of the 1990s at several background sites. However, air pollution monitoring in urban areas for other purposes was relatively scarce as national monitoring has been concentrated in these areas. Although ozone pollution has become a significant issue in major metropolitan areas every summer, only a little information on ozone precursors is available. During the past few years, the number of national monitoring stations has greatly increased. The government has a plan to gradually expand monitoring items as well as stations. It is anticipated that highly detailed information on both photochemical reactants and products will be available within the next several years. More emphasis will be placed on toxic substances based on risk assessment in monitoring for both research and policy making.

한류의 어원과 사용에 관한 연구 (Study of Korean Wave's The Origin and the Usage)

  • 장규수
    • 한국콘텐츠학회논문지
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    • 제11권9호
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    • pp.166-173
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    • 2011
  • 아시아는 약10년을 주기로 특정 국가의 문화가 유행을 주도하는 경향을 보여 왔다. 1980년대 홍콩영화의 유행을 '항류(港流)'라 칭했고, 1990년대 일본 TV드라마, 애니메이션, 게임 등의 유행을 '일류(日流)'라 칭했으며, 1990년대 말부터 '한류(韓流)'가 시작되었다. 이러한 '~류(流)'라는 표현은 '~식', '~스타일', '~파' 등의 뜻으로 일본에서 사용되어온 일본식 용어다. 최근 일본에서 유행하고 있는 대만 TV드라마와 특정 스타의 인기를 '대류(臺流)'라 부르다가, 중국 영화, 방송, 관광 등의 인기를 총칭하여 '화류(華流)'라고 부르는 것 또한 마찬가지다. 이렇듯 한류라는 용어는 일본에서 사용되는 '~류'의 일환으로 1999년 한국문화부에서 한국대중음악을 홍보하기 위해 배포한 음반 <韓流-Song from Korea>에서 공식적으로 사용되었다. 최근 한류의 열기가 한풀 꺾이며 화류의 열기가 그 자리를 대체하고 있음을 볼 때, 지금이라도 한류의 어원에 대한 잘못된 정보를 바로잡고, 한국문화를 표현하는 용어의 확립과 그 사용에 대한 연구가 필요한 시점이다.

조현병 입원 환자의 망상과 환각 : 1990년대와 2000년대의 비교 (Patterns of Delusions and Hallucinations in Schizophrenia : Comparison between the 1990s and the 2000s)

  • 정현진;김대호;오현영;박용천
    • 생물정신의학
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    • 제20권3호
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    • pp.80-85
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    • 2013
  • Objectives Research suggests that content of delusion and hallucination in schizophrenia is influenced by culture and social environment. However, few studies investigated chronological change of delusions and hallucinations within a society. To investigate changes in delusions and hallucinations of schizophrenia according to time, we compared contents of symptoms between inpatients with schizophrenia at two different time frames. Methods All admissions to a psychiatric unit of Hanyang University Guri Hospital with discharge diagnoses of schizophrenia at two different five-year time frames (1996-2000 and 2006-2010) were reviewed. Using a checklist, adapted from the Scale for Assessment of Positive Symptoms, we investigated delusions and hallucinations of 247 patients (104 in the 1990s and 143 in the 2000s). Results Delusions and hallucinations of patients did not differ at two time frames. In women, however, auditory and somato-tactile hallucinations were significantly more frequent in the 1990s (p < 0.05). Conclusions Our findings support the literature emphasizing that content and frequency of hallucination may differ according to cultural environment. We speculate that attitude toward sex and defensiveness toward disclosure of symptoms may have contributed to interval difference.

1990년대 우리나라 수학교육연구 동향 - 석사학위논문을 중심으로- (Movement of Research in Mathematics Education in 1990's - focused on the master's theses in Korea -)

  • 최택영;송병근
    • 한국수학교육학회지시리즈A:수학교육
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    • 제40권1호
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    • pp.77-92
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    • 2001
  • In this study, the number of theses conducted in 1990's for the master's degree in mathematics education was investigated in terms of their fields and themes. These theses were analysed as to how much they had been studied according to the field and whether they had conformed to the expectations and requirements for research in mathematics education under the current educational curriculum. Futhermore, this study aimed to discover advancing directions of research in mathematics education. The results are as follows: First, the rate of annual thesis presentations decreased as many as 3.82% in 1994 compared with the previous year, but the rate increased steadily in the other years showing an overall annual average increase of 8.41%. Second, in the geographical distribution of thesis presentations among local provinces, Seoul represented the highest frequency at 41.13% and Cheju Island the lowest at 1.68%. When the annual thesis presentations were analysed among regions, their number increased steadily in Seoul, but fluctuated in most other regions. Third, regarding study themes, theses on mathematics education formed 70.91% of the total while those focusing on pure mathematics formed 29.09%. Among the theses of mathematics education, most were based on teaching curriculums and the least were based on education assessment. Among the theses on teaching curriculum, teaching analytics formed the highest rate. Theses on education technology, such as computerizing and computing, have shown to be increasing annually and formed 8.95% of the total in 1999. The study also indicated that especially in the late 1990's, there have been many designed programs based on the Web, like JAVA and CGI, and studies on teaching and teaming methods using the internet.

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