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정신지체아와 학습부진아의 작업기억 특성에 관한 비교연구
여광웅,김나영,정영숙,이태화 한국정신지체아교육학회 2001 지적장애연구 Vol.3 No.-
이 연구는 정신지체아와 학습부진아의 작업기억(working memory) 특성을 비교 분석하여, 그들의 인지능력 즉 정보처리 용량에 관련된 변인과 이에 따른 교수방법을 탐색 논의하였다. 연구결과와 논의를 통해 볼 때, 학습부진아의 작업기억 용량이 정신지체아보다 더 큰 것으로 나타났으며, 모두 지능과 연령 그리고 자극 제시시간변인이 기억탐색 속도, 전략사용, 부호화 등의 다양한 심리적 기제를 통해 작업기억 용량에 영향을 주고 있는 것으로 밝혀졌다. 그리고 정신연령과 자극 제시시간이 증가할수록 작업기억 용량이 증가되는 것으로 나타났으며, 이것은 정신연령과 자극 제시시간이 증가함에 따라 기억 수행에 용이한 심릭적 기제가 활성화 되고 있음을 의미한다. The present study was designed to define the capacity of working memory (WM) of mentally retarded(MR) and Underachiever(UA). Subjects were 30 MR and 30 UA who were the same mental age, sampled from a special classes in the elementary schools and the middle schools in chungnam. Two group was formed according to three mental age (6,8,10) IQ scores ranges 50~75 for MR group, 90~110 for UA group. In order to define the capacity of WM of MR and UA, group(MR, UA), mental age(6,8,10) and speed of task presentation (3", 6")were used as independent variables and the capacity of WM as dependent variables. This study was taken following statistical methods in order to test study problems, problem 1 was conducted three-way analysis of variance by repeated-measures. Turky test was conducted to notice difference according to age. The main conclusion were as follows. First, the capacity of WM of UA is more larger than that of MR. Second, there are significant differences in the capacity of WM of MR according to mental age and speed of task presentation. Again as mental age and speed of task presentation in crease, the capacity of WM of MR increases. Finally, the capacity of WM of UA increases according to mental age and speed of task presentation. Jst as with MR, as mental age and speed of task presentation increase, the capacity of WM of UA increases.
IMT-2000 환경에서 Block Design을 응용한 회의용 인증메카니즘의 설계
이여진,김중태,조영주,유성진,배용근 조선대학교 전자정보통신연구소 2003 電子情報通信硏究所論文誌 Vol.6 No.1
In this paper, we present conference key authentication mechanism by employing an algebraic method on IMT-2000 environment To accomplish this, Symmetric Balanced Incomplete block design is applied for generating the communication key and then this key is distributed to participants Through this technique for creating a conference key and mutual authentications performed based on identification information, the communication protocol is designed The protocol presented minimizes the transmission complexity for generating a conference key On a special case the time complexity is O(v√v), where v is the number of participant. The security of the mechanism, which is a significant problem in the construction of Secure system, can be, proved as computationally difficult to calculate as factoring and discrete logarithms.
Yeo-Tae Yun,Chong-Tae Chung,Jae-Chul Lee,Young-Ju Lee,Han-Jung Na,Kwang-Won Lee,Young-Hwan Yoon 충남대학교 농업과학연구소 2015 농업과학연구 Vol.42 No.3
This study was conducted to know the variation and relationship of rice grain quality and starch pasting properties by transplanting times. Two early maturing rice cultivars which accounted for the most area of early maturing rice cultivar in Chungnam province were used. The experiment was laid out in a split-plot design with 3 replications. The main plot consisted of three transplanting times viz. early (April 25), ordinary (May 25) and late (June 25) with sub-plots containing two cultivars. According to the transplanting times, most of rice grain quality and starch pasting properties showed significant difference and Joami showed higher grain quality than Unkwang in all transplanting times. Especially, rice grain quality was improved when transplanted late, showing high head rice and glossiness of cooked rice due to the lower mean temperature during grain filling stage. Glossiness of cooked rice was positively correlated with head rice ratio, amylose content and setback value, and negatively correlated with chalky rice ratio and protein content. The highest positive and negative correlation were observed between breakdown value and peak viscosity (r = 0.98**), and breakdown and setback (r = -0.94**), respectively. These results provide some information for rice researchers and producers producing cultivars with an improved quality, suggesting that rice quality is highly influenced by temperature at grain filling stage, and transplanting times is crucial in improving rice quality. In addition, starch pasting properties are useful for determining rice quality because rice grain quality and starch pasting properties are dependent on each other.
Two-dimensional gel Electrophoresis of Helicobacter pylori for Proteomic Analysis
Tae-Sung Jung,Seung-Chul Kang,Yeo-Jeong Choi,Beong-Sam Jeon,Jeong-Won Park,Sun-Ae Jung,Jae-Young Song,Sang-Haeng Choi,Seong-Gyu Park,Mi-Young Choe,Byung-Sang Lee,Eun-Young Byun,Seung-Chul Baik,Woo-Kon 大韓微生物學會 2000 大韓微生物學會誌 Vol.35 No.2
( Yeo Tae Yun ),( Chong Tae Chung ),( Yeong Ju Lee ),( Han Jung Na ),( Jae Chul Lee ),( Dong Hee Lee ),( Kwang Won Lee ),( Ju Won Kang ),( Sang Nag Ahn ) 한국육종학회 2015 Plant Breeding and Biotechnology Vol.3 No.1
Studies were initiated for two consecutive years to examine the effects of transplanting date on the yield and quality of early maturing rice cultivars and to select rice cultivars capable of adapting to early transplanting in the middle plain area. The experiment was laid out in a split-plot design with 3 replications. The main plots consisted of two transplanting dates viz. early (25th of April) and ordinary (25th of May), with sub-plots containing eight cultivars. For early transplanting the mean temperature at the grain filling stage was lower than for ordinary transplanting, while the rice grain quality traits and palatability values were improved. Early transplanting results in 11 days earlier heading, higher head rice yield and lower milled rice yield than ordinary transplanting. Significant differences among the eight cultivars tested in this study were observed for most traits. Among cultivars, ‘Joami’ demonstrated the highest palatability. ‘Joami’ also performed better in head rice ratio and head rice yield than ‘Unkwang’, which is widely cultivated in the middle plain area. Palatability value (PV) showed significant positive correlations with head rice ratio (HR) and amylose content (AC), and negative correlations with chalky rice ratio (CR) and protein content (PC). Mean temperature (MT) was positively correlated with CR and PC, and negatively correlated with HR and AC. The highest positive and negative correlations among the rice quality traits were observed between HR and AC (r = 0.734), and HR and CR (r = -0.944), respectively. Based on the research findings, ‘Joami’ is suitable for early transplanting for cultivation in the Chungnam plain area.
Two-dimensional gel Electrophoresis of Helicobacter pylori for Proteomic Analysis
Jung, Tae-Sung,Kang, Seung-Chul,Choi, Yeo-Jeong,Jeon, Beong-Sam,Park, Jeong-Won,Jung, Sun-Ae,Song, Jae-Young,Choi, Sang-Haeng,Park, Seong-Gyu,Choe, Mi-Young,Lee, Byung-Sang,Byun, Eun-Young,Baik, Seung The Korea Society for Microbiology 2000 大韓微生物學會誌 Vol.35 No.2
Two-dimensional gel electrophoresis (2-DE) is an essential tool of proteomics to analyse the entire set of proteins of an organism and its variation between organisms. Helicobacter pylori was tried to identify differences between strains. As the first step, whole H. pylori was lysed using high concentration urea contained lysis buffer [9.5 M Urea, 4% CHAPS, 35 mM Tris, 65 mM DTT, 0.01% SDS and 0.5% Ampholite (Bio-Rad, pH 3-10)]. The extract ($10\;{\mu}g$) was rehydrated to commercially available immobilised pH gradient (IPG) strips, then the proteins were separated according to their charges as the first dimensional separation. The IPG strips were placed on Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis (SDS-PAGE) to separate according to molecular mass of the proteins as the second dimension. The separated protein spots were visualised by silver staining in order to compare different expression of proteins between strains. Approximately 120 spots were identified in each mini-protein electrophoresised gel, furthermore about 65 to 75 spots were regarded as identical proteins in terms of pI value and molecular weight between strains used. In addition, distinct differences were found between strains, such as 219-1, Y7 and Y14, CH150. Two representative strains were examined using strips which had pH range from 4 to 7. This strips showed a number of isoforms which were considered large spots on pH range 3-10. Furthermore, the rest of spots on pH 4-7 IPG strips appeared very distinctive compared to broad range IPG strips. 2-DE seems to be an excellent tool for analysing and identifying variations between H. pylori strains.