• Korean Journal of Ecology and Environment
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• v.41 no.3
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• pp.395-401
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• 2008

Genetic diversity and differentiation within or among nine populations of introduced fish, largemouth bass Micropterus salmoides were assessed by AFLP. The AFLP analysis using three primer combinations generated 299.2. AFLP bands and percentage of polymorphic bands were similar in those nine populations, ranging 14.1 to 21%. Heterozygosity and genetic diversity within or among populations were quite low for all of these populations with average values ranging from 0.054 to 0.067 and from 0.069 to 0.085, respectively. Analyses of pairwise distance and genetic similarity among nine populations of Micropterus salmoides also revealed the similar results with low genetic differentiation one another. Although pairwise Fst values were low, they were indicated a clear distinct genetic differentiation among the nine populations. These results indicate that very small population of the largemouth bass was first introduced to Paldang reservoir and they are widely spread at most of aquatic habitats in Korea.

• The Journal of the Korea Contents Association
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• v.5 no.5
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• pp.1-9
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• 2005

In this paper, we suggest multi colony interaction ant reinforcement learning model. This method is a hybrid of multi colony interaction by elite strategy and reinforcement teaming applying Temporal Difference(TD) learning to Ant-Q loaming. Proposed model is consisted of some independent AS colonies, and interaction achieves search according to elite strategy(Intensification, Diversification strategy) between the colonies. Intensification strategy enables to select of good path to use heuristic information of other agent colony. This makes to select the high frequency of the visit of a edge by agents through positive interaction of between the colonies. Diversification strategy makes to escape selection of the high frequency of the visit of a edge by agents achieve negative interaction by search information of other agent colony. Through this strategies, we could know that proposed reinforcement loaming method converges faster to optimal solution than original ACS and Ant-Q.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.700-708
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• 2016

This study is to examine how peer counseling program affects on peer relation of children. The study subjects who fourth grades of A elementary school students in K city of Cheonbuk region, children of 26(boys 14, girls 12) people who expressed their joining opinion of program, were selected through information. 28(boys 15, girls 13) people were selected as control group. Before conducting program, both experiment group and control group were identified as same group. From in April, 2014 to in June 2014, peer counseling was conducted by experiment group(once per week, 60 minutes per session for a total 10 sessions), to examine effect, peer relation questionnaire were practiced before and after. Following were gained results of SPSS 18.0 used to analysis data of comparison in group before and after. peer relation of experiment group who conducted peer counseling had improved. Peer Counseling was effective for improving of Children's peer relation. However, there was no difference in compare of control group before and after. Therefore, this study can know that peer counseling had positive effect on peer relation of children.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.636-648
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• 2020

The purpose of this preliminary study is to help put the women with career breaks in Science and Technique back to work and keep on working. For this purpose, we developed a 8-session group counseling for woman scientists and technicians with career break: Self-Growth group and Interpersonal Conflict Resolution Group. A total of 14 people participated in Group counseling. The most of participants reported that they have experienced lowered self-esteem, difficulties in relationship with family and colleagues, and psychological pressure and distress. The participants in the Interpersonal Conflict Resolution Group Counseling showed positive changes at stress coping strategies. From this study, the women with career breaks in Science and Technique will be expected to overcome the difficulties of career breaks wisely, demonstrate and confirm their competence, and restore from stress and psychological burnout. Based on the results of this study, implications and limitations of this study and future research were discussed.

• The Journal of the Korea Contents Association
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• v.8 no.11
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• pp.404-411
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• 2008

The purpose of this study is to suggest the effects of schema activation on reading comprehension. The subject of a sample survey was a 36 student experimental group and a 32 student control group, total 68 students at third grade class of C Middle School in Gwangju. Students ability to read English in the two groups were almost the same through, which was shown by pre-test administered before the beginning of the experiment. As a pre-reading activity, the experimental group was showed the pictures and vocabularies related to the text before reading. The other control group did Grammar Translation Method about text. The data needed for this study was obtained by the questionnaires with 25 questions about the English reading. The data analyzing method was t-test through the statistics program SPSS 12.0. The result of this study is as follows : First, the experimental group got a more meaningful score than the control group at the test. Second, pre-reading activities for providing prior knowledge of the text were affected by the student's English proficiency, peculiarly more effective on low level student than advanced level. Studying English reading through schema activation led the students to be present in classes with interests, so the experimental group showed more academic accomplishments than the control group.

• Journal of Life Science
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• v.8 no.6
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• pp.687-694
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• 1998

Enzyme electrophoresis was used to estimate genetic diversity and population structure of Chimaphila japonica Miq. in Korea. The percent of polymorphic loci within the enzymes was 48.7%. Genetic diversity at the species level and at the population level was high (Hes=0.278 ; Hep=0.222, respectively), whereas the extent of the population divergence was relatively low ( $G_{ST}$ =0.079). $F_{IS}$ , a measure of the deviation from random mating within the 7 populations, was 0.355. An indirect estimate of the number of migrants per generation (Nm=2.61) indicates that gene flow is high among Korean populations of the species. In addition, analysis of fixation indices revealed a substantial heterozygosity deficiency in some populations and at some loci. Factors contributing to the high levels of genetic dive-rsity found in the entire species of C. japonica include wide distribution, long-lived perennials, ability to regenerate due to rhizomatous spread, outcrossing induced by animal vectors, and occasional pollen dispersal by wind.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.235-237
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• 2005

도메인 조합 기반의 단백질-단백질 상호작용 예측 기법(DCPPIP)은 효모 단백질에 대하여 뛰어난 정확도를 보여준다. 그러나 다른 종에서의 예측 정확도 및 기법의 유효성은 아직까지 검증되지 않고 있다. 본 논문에서는, 초파리 및 인간 단백질을 이용한 예측 정확도 검증 및 이종간의 상호작용 예측 실험의 결과를 기술한다. 초파리와 인간 단백질의 실험에서는 각각 10,351개와 2,345개의 상호작용 단백질 쌍이 사용되었다. 초파리와 인간의 상호작용 단백질 쌍 중 $80\%$와 $20\%$를 각각 학습집단 및 실험집단으로 사용하였으며. 상호작용이 없는 단백질 쌍의 학습집단은 1배에서 5배까지 변화시키면서 예측 정확도를 관찰하였다. 정확도는 실험집단 중 학습집단과 도메인이 완전히 혹은 부분적으로 겹치는 쌍들에 대하여 계산하였다. 이 결과 초파리에서는 약 $77\%$의 민감도와 $92\%$의 특이도가 확인되었고 인간 단백질에 대하여는 약 $96\%$의 민감도와 $95\%$의 특이도를 보여주었다. 이종간의 상호작용 예측 실험은 효모, 초파리, 효모+초파리에 해당하는 학습집단 각각을 바탕으로 Human, Mouse, H. pylori, E. coli, C. elegans 등의 단백질 상호작용 예측을 수행하였다. 실험 결과 학습집단의 도메인이 실험집단의 도메인과 많이 겹칠 수륵 높은 정확도를 보여주었으며, 도메인 집단간의 유사도를 나타내기 위해 고안한 Domain Overlapping Rate(DOR)는 상호작용 예측 정확도의 중요한 요소임을 찾아 내었다.

• Journal of Life Science
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• v.16 no.6
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• pp.898-903
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• 2006

The genetic diversity and population structure of fifteen Potentilla discolor Bunge populations in Korea were determined using genetic variations at 19 allozyme loci. Fourteen of the 19 loci (73.7%) showed detectable polymorphism. Genetic diversity at the species level and at the population level was high ($H_{ES}\;=\;0.215$, $H_{EP}\;=\;0.196$, respectively), whereas the extent of the population divergence was relatively low $(G_{ST}\;=\;0.069)$. Total genetic diversity values $(H_T)$ varied between 0.0 and 0.656, giving an average overall polymorphic loci of 0.292. The interlocus variation of genetic diversity within populations $(H_S)$ was high (0.274). On a per locus basis, the proportion of total genetic variation due to differences among populations $(G_{ST})$ ranged from 0.010 for Pgm-2 to 0.261 for Pgd-2 with a mean of 0.069, indicating that about 6.9% of the total allozyme variation was among populations. Wide geographic ranges, perennial herbaceous nature and the persistence of multiple generations are associated with the high level of genetic variation in P. discolor. The estimate of gene flow based on $G_{ST}$ was high among Korean populations of P. discolor (Nm = 3.36).

• Journal of The Korean Association For Science Education
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• v.24 no.5
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• pp.996-1007
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• 2004

In this study, we investigated the effects of small group discussion using episodes from the history of science on students' understanding about the nature of science (NOS), achievement, enjoyment of science lessons, and science learning motivation. Participants were 138 ninth graders from a middle school in Seoul and they were assigned to a control group and a treatment group. Students in the treatment group were provided with two contrasting perspectives concerning the NOS and were encouraged to discuss them in small groups. The intervention lasted for 5 class periods. The results revealed that students of both the control group and the treatment group were found to possess similar views about NOS in a NOS pretest, whereas students of the treatment group exhibited more sophisticated understanding in a NOS posttest. The scores of the treatment group were also significantly higher than those of the control group in an enjoyment of science lessons test and a learning motivation test. However, there was no significant difference between two groups in the achievement test scores.

• Journal of the Korea Society of Computer and Information
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• v.12 no.3
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• pp.115-122
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• 2007

The aim of this study is to identify the effect that the blended learning has on the learning achievement of computer education in high school. To get the goal, 136 students were allocated into the experiment group(68 students) with the blended class and the control group(68 students) with the traditional face-to-face class. After identifying the homogeneity of two groups in learning achievement by analyzing the pre-test, the experiment was performed. The result of this research is as follows. Significant difference was found in the learning achievement of post-test between the experiment group and the control group (t=-3.16, p=.0019). This result underlies the potential of blended learning in computer education. It will be important for designing the class for computer education in high school.