• KOREAN JOURNAL OF CROP SCIENCE
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• v.20
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• pp.27-62
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• 1975

These studies were aimed at clarifying whether or not selecting agronomic characteristics of hybrid-rice populations under greenhouse conditions was useful. The selection of two quantitative characteristics, culm length and heading date, and two qualitative characteristics, shattering and awnedness, was very effective, but the flag leaf length and the exsertion of panicle was not consistent, varying from one cross to another.

• Proceedings of the Korean Society for the Gifted Conference
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• 2004.11a
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• pp.179-190
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• 2004

본 논문에서는 영재와 정보과학영재에 대하여 여러 학자들의 의견을 바탕으로 그 개념을 정의하고, 초등 정보과학영재를 교육하고 있는 대학부설 영재교육원의 선발 실태 분석을 통하여 정보과학영채 선발방법의 문제점을 알아보고, 선발방법에 대한 개선점과 선발절차를 제시하였다.

• Journal of Gifted/Talented Education
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• v.24 no.3
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• pp.445-462
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• 2014

The purpose of the present study is to compare paper and pencil test utilized to identify gifted students so far to the recently introduced teacher observation-recommendation system. More specifically, this study compared intelligence, career patterns, and self- regulated learning abilities of gifted students who were identified through those two different identification system to explore the possibility of the newly introduced teacher observation-recommendation system. The results show that there was no significant difference in the aspect of overall IQ score. However, students who were identified through the observation-recommendation system showed significantly higher scores at some subscores of intelligence test, such as vocabulary application, comprehension, and schematization. In the aspects of career patterns, about 72% of gifted students who were identified through the previous paper and pencil test belonged to the 'investigative' category of Holland. But more diverse career patterns such as enterprising, social, realistic, conventional including investigative categories were found in those students who were identified by the observation-recommendation system. There were also significant differences in the self-regulated learning abilities between two groups of students. Practical implications of the study were discussed in depth.

• Journal of Science Education
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• v.39 no.2
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• pp.278-289
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• 2015

The purpose of this study is to analyze selection methods of gifted students. This study focuses on the understanding the characteristics of gifted students in accordance with the selection methods, i.e. the examination selection and automatic promotion by analyzing and comparing the academic emotion, meta-cognition, and self-efficacy between gifted students selected according to the selection methods. Moreover, for the purpose of the effective gifted education, this study aims to arrange a reasonable basis for the discrimination and selection of gifted students. The results of this study were as follows. First, there was no meaningful difference between gifted students selected by an examination and promoted automatically in view of academic emotion, meta-cognition, and self-efficacy of gifted students. It is determined that there is no difference between the effects of selection methods under the condition of the same group of gifted students. Second, regarding the academic emotion of gifted students, there is no significant difference in both the elementary and middle school in case of examination selection. However, in case of the automatic promotion, the academic emotion of gifted students promoted automatically in the gifted education center was higher than that of the gifted students in the gifted class (p < .05). Regarding the meta-cognitive skill, there is no difference in the elementary school between the selection methods. In case of the examination selection in the middle school, the meta-cognitive skill of male students of the gifted education center was higher than that of the female and gifted class students (p < .05). In case of the automatic promotion in the middle school, the meta-cognitive skill of students of the gifted education center was higher than that of students of the gifted class (p < .05). As for the case of self-efficacy, there were no differences between the selection methods. In the automatic promotion, self-efficacy of students of the gifted education center was higher than that of students of the gifted class (p < .05).

• Proceedings of the Korean Society for the Gifted Conference
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• 2005.05a
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• pp.197-216
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• 2005

정보과학영재의 선발에서 가장 중시되어야 할 문제는 교육에 의한 가능성을 측정하는 것이다. 그러므로 정보과학영재의 선발에서는 정보과학영재의 정의와 특성에 따라 그들이 가지고 있는 정보과학분야에 대한 창의적 사고력과 이해력이 바탕이 되어야 한다. 본 논문에서는 영재와 정보과학영재에 대한 여러 학자들의 정의와 특성을 바탕으로 초등정보과학영재 선발평가에 필요한 필수요소를 추출하여 선발평가 문항을 개발하였다.

• Journal of the Korean Statistical Society
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• v.3 no.1
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• pp.59-63
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• 1974

표현형 변수 Y가 유전변수 X와 환경변수 E로 표시되고 X와 E가 상호독립이며 각각 다음과 같은 정규분포를 한다고 하자. $$X\simN(\mu,\sigma^2), E\simN)0,\omega^2)$$ 대체로 $Y \geq y$이거나 $Y \leq y$인 형태일 때 유전 및 육동적 선발은 Y=X+E의 형태로 나타난다. 롭슨[3]은 선발을 반복하였을 때 유전변수 X의 평균기대치와 유전변수 X의 조건부분포의 영향을 연구하였고 이와같은 일변량분포의 경우 선발의 효과는 전분산에 대한 유전분산의 비에 달려있다 하였다. 이러한 선발모형을 p-차원 공간에 적용하면 유전편차의 비율을 구할 수 있다.

• Journal of Gifted/Talented Education
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• v.23 no.2
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• pp.257-273
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• 2013

The purpose of this study was to explore a more useful identification method by comparing diverse selection approaches for the gifted education programs at the each elementary school. Diverse selection methods examined in the study include 'written examinations', 'mixed evaluation', 'achievement test scores', and 'self-recommendation'. For the study, each identification group's gifted students' characteristics, such as intelligence, creativity, motivation and self-regulated learning strategies, were compared. The subjects of the study were a total of 594 gifted and normal students. The results of this study were as follows: First, there were no statistically significant differences between students in each gifted education class and gifted students who belong to the regional gifted education programs which are considered higher level of gifted education programs. While, there were statistically significant differences between two groups of gifted students and general students in all aspects examined, such as intelligence, creativity, motivation and learning strategies. In addition and most importantly, diverse identification method utilized in each school showed differences in gifted students' characteristics. Especially, students who were selected through the self-recommendation showed significantly lower intelligence, creativity, motivation and learning strategies. The implications of the study related to the identification and education for the gifted at each elementary school were discussed in depth.

• Journal of The Korean Association of Information Education
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• v.22 no.4
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• pp.491-500
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• 2018

In the era of the Fourth Industrial Revolution, talents should not be subordinated to a particular discipline, but must be able to converge a variety of disciplines. It is important to have a fused thinking because elementary school students are likely to make various changes. Therefore, when selecting elementary gifted students, they are selecting students for fusion gifted students. This study examines the effects of creative problem solving ability, document evaluation, and interview factors on student selection when selecting students for gifted students. The results show that creative problem solving ability has the most influence on selection. In the case of the fifth graders, the creative problem solving ability and the document evaluation influence the selection. In fourth graders, the creative problem solving ability and interview affect the selection. In the case of female students, it was found that creative problem solving ability and document evaluation influenced selection. In addition, there was a gender difference in the evaluation of documents in the gender difference analysis. There is no significant difference between the three groups in the grade-by-grade difference analysis.

• Journal of Korean Society of Forest Science
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• v.32 no.1
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• pp.73-86
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• 1976

Two individuals ($sp_1$, $sp_2$) of purple and one individual ($sd_1$) of red hearted flower were selected from 18 years old Hibiscus syriacus trees obtained from the seeds treated with colchicine, and their morphological and physiological characteristics were investigated and following results were obtained. 1. The somatic chromosome number of the selected individuals, $sp_1$, $sp_2$, and $sd_1$ were 2n=160, while that of the check tree was 2n=80, indicating that the selected individuals, $sp_1$, $sp_2$ and $sd_1$ were tetraploid. 2. Peroxidase isoenzyme bands of high activity in selected individuals, $sp_1$, $sd_1$ and check tree were mostly in cathode, fixed band was f and v bands, and frequency of each band and their activity were not different between selected individuals, $sp_1$ and $sd_1$ and check tree. 3. The flowers of $sp_1$ individual were large in size and more dark purple than check tree's. The flowers of $sp_2$ individual were not increased in size, but they were dark purple and red heart at the base of the petal was expanded to 2/3 of the petal length. The flower of $sd_1$ individual was also large and some of the red lines from the petal base were extended to 2/3 of the petal length, which was much longer than those of the check tree. 4. Thickess of leaves, length of guard cells, diameter of pollens, wood fiber lengths and woody fiber widths were all increased in $sp_1$, $sp_2$ and $sd_1$ as compared to those of the check tree. 5. Survival percentage of cuttings was 80% with $sp_1$ and 36% with $sd_1$, and their growth performance were inferior to control in their second growing season.

• The Microorganisms and Industry
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• v.15 no.2
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• pp.40-45
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• 1989

본고에서는 한국과학기술원, 유전공학센터, 미생물자원실에서 3여년간 행했던 토양방선균으로부터 근간으로 기술하고 기술범위는 미생물 Screening을 중심으로 대상물에서 미생물 선발, 배양을 통한 선발, 선발시험 방법 및 신규성 확인 등의 순으로 검토하겠다.