• Journal of the Korean Society for Library and Information Science
• /
• v.33 no.1
• /
• pp.5-22
• /
• 1999

This research aimed at the investigation of the effectiveness of bibliotherapy for depressed older adults 65 years of age and older, The efficacy between interactive bibliotherapy and reading bibliotherapy was also compared and analysed. For implementing the research, 22 subjects, aged 65 or over. were recruited from the community on a volunteer basis to Participate in a bibliotherapy program. Initial screening of potential participants was conducted by testing the measurement of depression. Experiment results were analyzed via t-ananlysis(SD, P, T) and $2\times3(Group{\times}Time)$ between and within ANOVA calculated by SPSS program. The results of the analyses supported hypotheses 1, 2, and 3, focusing the efficacy of interactive bibliotherapy as well as reading bibliotherapy. The analysis of hypothesis 4 was revealed that the effectiveness of interactive bibliotherapy was superior to that of reading bibliotherapy in the score of BDI and HRSD, while there was no statistical significance in the score of DAS.

• Journal of Korean Library and Information Science Society
• /
• v.44 no.1
• /
• pp.27-47
• /
• 2013

This study investigated the classification performance of a kNN classifier using the feature selection methods based on document frequency(DF) and collection frequency(CF). The results of the experiments, which used HKIB-20000 data, were as follows. First, the feature selection methods that used high-frequency terms and removed low-frequency terms by the CF criterion achieved better classification performance than those using the DF criterion. Second, neither DF nor CF methods performed well when low-frequency terms were selected first in the feature selection process. Last, combining CF and DF criteria did not result in better classification performance than using the single feature selection criterion of DF or CF.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.34 no.3
• /
• pp.319-347
• /
• 2023

This study aimed to construct a career exploration reading program based on the Fourth Industrial Revolution and measure its effects on students' career consciousness development. The study involved 12 participants in the experimental group and 12 participants in the control group, who underwent pre-test and post-test evaluations. After conducting 12 sessions of the career exploration reading program with the experimental group, a career development assessment was administered. The experimental group showed statistically significant effects in all nine sub-domains of career development compared to the control group. Additionally, the experimental group reported increased satisfaction, positive perception, and a sense of accomplishment in career exploration activities, leading to a positive impact on the formation of future career concepts.

• Journal of the Korean Society for information Management
• /
• v.20 no.4 s.50
• /
• pp.233-248
• /
• 2003

The Inverse Document Frequency (IDF) weighting method is based on the hypothesis that in the document collection the lower the frequency of a term is, the more important the term is as a subject word. This well-known hypothesis is, however, somewhat questionable because some low frequency terms turn out to be insufficient subject words. This study suggests the pivoted IDF weighting method for better retrieval effectiveness, on the assumption that medium frequency terms are more important than low frequency terms. We thoroughly evaluated this method on three test collections and it showed performance improvements especially at high ranks.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2011.06a
• /
• pp.249-252
• /
• 2011

이 연구는 중학교 과학 수업의 온 오프라인 혼합 협동학습에 대한 효과를 검증해 보고자 하였다. 연구의 목적을 달성하기 위해 먼저 온 오프라인 혼합 협동학습과 관련된 문헌 고찰을 통해 연구의 수행에 필요한 이론적 기반을 마련하였다. 중학교 1학년 과학 내용 중에서 연구 단원을 선정하여 온 오프라인 혼합 협동학습 모형을 제시하였다. 연구대상은 경기도 김포시에 위치한 'K'중학교 1학년 학생들 중에서 사전 학업성취도 검사와 학습태도 검사에 의해 동질집단으로 확인된 2개 학습 79명이다. 연구대상 중 1개 학습 40명을 실험대상으로 선정하여 온 오프라인 혼합 협동학습의 실험을 실시하고 통제집단에는 기존의 면대면 협동학습을 실시하였으며 실험이 끝난 후 두 집단의 학업성취도 및 학습태도 변화 차이를 비교 분석하였다. 결과 분석은 SPSS Ver.12.0을 이용하였으며 학업성취도는 다변량 분산분석(MANOVA)을 하였고, 학습태도는 독립표본 t검정을 통해 분석하였다. 분석한 연구의 결과 첫째, 중학교 과학 수업에서 온 오프라인 혼합 협동학습은 면대면 협동학습과 학업성취도에서 유의미한 차이가 나타났다. 또한 온 오프라인 혼합 협동학습 실험집단이 면대면 협동학습 통제집단보다 학업성취도의 하위 영역 중 기억 영역에 그 효과성이 두드러짐을 확인하였다. 둘째, 중학교 과학 수업에서 온 오프라인 혼합 협동학습은 면대면 협동학습과 학습태도에서 유의미한 차이가 나타나지 않았다. 연구 결과를 토대로 온 오프라인 혼합 협동학습은 첫째, 학습자들로 하여금 자료 수집, 분석, 정리 단계에서 정보의 공유를 통해 적극적으로 학습을 유도하였다고 예측할 수 있다. 이는 온 오프라인 혼합 협동학습이 면대면 협동학습보다 학업성취도 향상에 효과적인 교수학습 방안으로 제시될 수 있음을 의미한다. 둘째, 중학교 과학수업에서 온 오프라인 혼합 협동학습은 학습자의 학습태도에 효과적이라고 확신할 수 없다. 따라서 학습자의 교과에 대한 학습태도의 향상을 위해서는 교수 학습방법을 다각화하고 교과와 학습목표에 맞는 적절한 학습방법의 지속적 활용이 중요하다고 판단된다.

• Journal of vocational education research
• /
• v.29 no.3
• /
• pp.209-230
• /
• 2010

In this study, the career barriers exploration counseling program was carried out to research the factor on the career barriers of women's college students. And then the effect of the career barriers exploration counseling program on career preparation behavior of the women's students was analyzed. The program that referred to the career counseling program proposed in domestic and career material suggested in Korean Women's Development Institute and Korea Research Institute for Vocational Education & Training was adopted in this investigation. Moreover referred to the previous research and reference related to career counseling that had conducted the related factor on career barriers and career preparation behavior. First of all, the program was reconstructed by referring to the Gottfredson(1981)'s career development theory. In order to verify the effect of the program on career preparation behavior of women's college students, two times tests were carried out on 10 persons of the experimental group and the control group respectively, before and after the program was performed. And then the ANCOVA was done on the difference between the post-test results of the experimental group and the control group. Findings of this study might be summarized as follows: First, the post-test result in the experimental group on career barriers was significantly lower than in the control group. Second, on career preparation behavior the result in the experimental group was higher than in the control group. Therefore, the career barriers exploration counseling program had a significant influence on career barriers of women's college students and the program impacted on career preparation behavior of women's college students significantly.

• Journal of the Korean Society for Library and Information Science
• /
• v.56 no.4
• /
• pp.239-267
• /
• 2022

In this study, the adolescents' perception of the Information Search Process(ISP); their anxiety and the need for intervention during the process were investigated based on Kuhlthau's ISP model, and the relationship among the factors was analyzed with structural equations. In addition, the effectiveness of scaffolding strategy to the experimental group during the class was verified. The main findings are as follows. First, as a result of exploring the anxiety felt by learners and the need for intervention in the information search process, it was found that the presentation stage had a significant effect on the anxiety, and the collection, presentation, and assessment stages had significant effects on the need for intervention. Second, as a result of controlling each variable to investigate the anxiety felt by learners and necessity of intervention in the information search process, it was confirmed that among the demographic variables, the difference between the first graders and the second ones was significant; and the difference in the metropolitan area was more significant than that in the Gangwon province. Third, as a result of paired t-test and covariance analysis on the control group and the experimental group, it was confirmed that the anxiety and need for intervention of the experimental group were statistically significantly reduced. The significance of this study lies in the point that it presents a practical basis for applying scaffolding strategies appropriate to information search process in the field of education.

• Journal of the Korean Society for information Management
• /
• v.24 no.3
• /
• pp.201-218
• /
• 2007

This study proposes a topic distillation algorithm that ranks the relevant sites selected from retrieved web pages, and evaluates the performance of the algorithm. The algorithm calculates the topic score of a site using its hierarchical structure. The TREC .GOV test collection and a set of TREC-2004 queries for topic distillation task are used for the experiment. The experimental results showed the algorithm returned at least 2 relevant sites in top ten retrieval results. We peformed an in-depth analysis of the relevant sites list provided by TREC-2004 to find out that the definition of topic distillation was not strictly applied in selecting relevant sites. When we re-evaluated the retrieved sites/sub-sites using the revised list of relevant sites, the performance of the proposed algorithm was improved significantly.

• Journal of the Korean Society for information Management
• /
• v.24 no.1 s.63
• /
• pp.209-226
• /
• 2007

XML documents format on the Web provides a mechanism to impose their content and logical structure information. Therefore, an XML processor provides access to their content and structure. The purpose of this study is to investigate the usefulness of structural hints in the leaf node language model-based XML document retrieval. In order to this purpose, this experiment tested the performances of the leaf node language model-based XML retrieval system to compare the queries for a topic containing only content-only constraints and both content constrains and structure constraints. A newly designed and implemented leaf node language model-based XML retrieval system was used. And we participated in the ad-hoc track of INEX 2005 and conducted an experiment using a large-scale XML test collection provided by INEX 2005.

• Journal of the Korean Society for information Management
• /
• v.35 no.2
• /
• pp.63-88
• /
• 2018

This research evaluated differences of classification performance for feature selection methods using LDA topic model and Doc2Vec which is based on word embedding using deep learning, feature corpus sizes and classification algorithms. In addition to find the feature corpus with high performance of classification, an experiment was conducted using feature corpus was composed differently according to the location of the document and by adjusting the size of the feature corpus. Conclusionally, in the experiments using deep learning evaluate training frequency and specifically considered information for context inference. This study constructed biomedical document dataset, Disease-35083 which consisted biomedical scholarly documents provided by PMC and categorized by the disease category. Throughout the study this research verifies which type and size of feature corpus produces the highest performance and, also suggests some feature corpus which carry an extensibility to specific feature by displaying efficiency during the training time. Additionally, this research compares the differences between deep learning and existing method and suggests an appropriate method by classification environment.