• 유통과학연구
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• 제21권9호
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• pp.103-114
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• 2023

Purpose: This paper aims to assess psychological heuristics' effectiveness on cumulative returns after significant stock price changes. Specifically, it compares availability and anchoring heuristics' empirical validity due to conflicting stock return predictions. Research Design, Data, and Methodology: This paper analyzes stock price changes of Korean distribution industry stocks in the KOSPI market from January 2004 to July 2022, where daily fluctuations exceed 10%. It evaluates availability heuristics using daily KOSPI index changes and tests anchoring heuristics using 52-week high and low stock prices as reference points. Results: As a result of the empirical analysis, stock price reversals did not consistently appear alongside changes in the daily KOSPI index. By contrast, stock price drifts consistently appeared around the 52-week highest stock price and 52-week lowest stock price. The result of the multiple regression analysis which controlled for both company-specific and event-specific variables supported the anchoring heuristics. Conclusions: For stocks related to the Korean distribution industry in the KOSPI market, the anchoring heuristics theory provides a consistent explanation for stock returns after large-scale stock price fluctuations that initially appear to be random movements.

• Educational Technology International
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• 제20권2호
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• pp.195-221
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• 2019

This study explored middle and high school students' learning experiences using e-textbooks in online learning courses. Data were collected from in-depth interviews. The interviewees for this study were 19 students who enrolled voluntarily in an online mathematics and science inquiry program, actively participated in the online learning. The students generally have high academic achievement and motivation for learning in science and mathematics. Data were analyzed based on a grounded theory approach. As a result, the characteristics of the online learning environment using e-textbooks were conceptualized via three different categories including temporal, spatial, and technical. Such characteristics of the learning environment were able to provoke self-directed learning, extended learning, interactive learning, in-depth learning, improved ICT literacy, and formation of positive emotions and learning habits. Most of the learners showed positive feedback towards the use of e-textbooks, while some mentioned the technical limitations compared to conventional paper-based learning. This study suggested that e-textbooks are likely to induce positive experiences for learners in the context of online learning, so it is necessary to design contents that utilize various functions and advantages of electronic teaching materials in order to use e-textbooks effectively.

• Educational Technology International
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• 제12권1호
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• pp.67-94
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• 2011

The major concern of e-learning environment design is to create and improve artifacts that support human learning. To facilitate effective and efficient learning, e-learning environment designers focused on the contemporary information technologies. Web 2.0 services, which empower users and allow the inter-transforming interactions between users and information technologies, have been increasingly changing the way that people learn. By adapting these Web 2.0 technologies in learning environment, educational technology can facilitate learners' abilities to personalize learning environment. The main purpose of this study is to conceptualize comprehensively constructs for understanding the inter-transforming relationships between learner and learning environment and mutable learning environments' impact on the process through which learners learn and strive to shape their learning environment. As results, this study confirms conceptualization of four constructs by incorporating aspects of design that occur in e-learning environments with Web 2.0 technologies. First, learner-designer refers to active and intentional designer who is tailoring an e-learning environment in the changing context of use. Second, learner's secondary design refers to learner's design based on the primary designs by design experts. Third, transactional interaction refers to learner's inter-changeable, inter-transformative, co-evolutionary interaction with technological environment. Fourth, trans-active learning environment refers to mutable learning environment enacted by users.

• 수완나부미
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• 제16권1호
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• pp.15-38
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• 2024

In this paper, I will pursue initial ideas I formulated in 2012 about the permeation of Korean influences in Philippine popular culture, particularly in the production of serialized TV drama/soap operas or the "teleserye" [tele for television + "serye" or series; thus, TV drama series]. I called the phenomenon the "Korean Turn" as I observed the emulation of Korean televisual drama (nowadays called K-Drama) modes and practices by local production through various means of cultural appropriation. This time, I will expand my exploration to other aspects of Philippine entertainment and other cultural practices. I will also update my observations on the continuing "Korean turn" in the teleserye. I will argue, on the one hand, about the success and soft power of hallyu or the "Korean wave" in the Philippines; and on the other, about Philippine culture's enduring ingenuity in its reception and repurposing of hallyu. Ideas to be yielded here will form part of a potential framework in understanding the dynamics of the interface between Korean and Philippine cultures, in the context of globalization. I assert that popular culture remains to be an undervalued field of inquiry, as far as these contexts are concerned.

• 아태비즈니스연구
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• 제14권4호
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• pp.37-48
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• 2023

Purpose - This study aims to explore the influence of emotional discrepancies among investors on the cryptocurrency market. It focuses on how varying emotions affect market dynamics such as volatility and trading volume in the context of Bitcoin trading. Design/methodology/approach - This study involves analyzing data from Bitcointalk.org, consisting of 57,963 posts and 2,215,776 responses from November 22, 2009, to December 31, 2022. Tools used include the Linguistic Inquiry and Word Count (LIWC) software for classifying emotional content and the Python Pattern library for sentiment analysis. Findings - The results show that heterogeneous emotional feedback, whether positive or negative, significantly influences Bitcoin's intraday volatility, skewness, and trading volume. These findings are more pronounced when the underlying emotion in the feedback is amplified. Research implications or Originality - This study underscores the significance of emotional factors in financial decision-making, especially within the realm of social media. It suggests that investors and market strategists should consider the emotional landscape of online forums when making investment choices or formulating market strategies. The research also paves the way for future studies regarding the behavioral impact of emotions on the cryptocurrency market.

• 한국과학교육학회지
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• 제35권3호
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• pp.509-521
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• 2015

논증활동은 사람들 사이의 사회적 협력적 대화과정으로 볼 수 있다. 논증활동에 대한 선행연구를 살펴보면 Toulmin(1958)이 제시한 논증구조를 이용하여 논증활동의 구조적 측면을 분석하는 데 중점을 두고 있으며, SSI 맥락보다는 과학적 탐구 맥락에서 주로 연구가 수행되어 왔다. SSI 맥락에서의 논증활동은 간학문적, 논쟁적, 가치내재적 특성을 띠고 있기 때문에, 기존의 분석틀로는 SSI 논증활동을 분석하는데 한계가 있다. 이에 본 연구에서는 문헌연구과 SSI 담화 사례분석을 기반으로 SSI 맥락에서의 소집단 논증활동을 위한 분석틀을 개발하고, 그 틀을 기반으로 실제 SSI 맥락에서 진행되는 소집단 논증활동에 적용해봄으로써 그 적용가능성을 탐색해 보고자 하였다. 본 연구자는 SSI 맥락에서의 소집단 논증활동을 분석하기 위해 '담화클러스터'와 '담화요소'의 개념을 도입하였다. 담화클러스터는 유사한 목적을 지닌 발화의 묶음으로, SSI 맥락에서 '문제의 논점 확인', '개별 입장의 교환', '다양한 관점 및 자료의 탐색', '상반된 관점 간 논쟁', '설득력 있는 안에 대한 선택', '절충안 또는 대안 마련'의 여섯 가지로 구분될 수 있다. 담화요소는 SSI 소집단 논증활동에서 바람직하게 평가될 수 있는 내용 및 구조적 요소로서, '다양한 관점의 고려', '증거에 기반한 추론', '지속적인 탐구와 회의적 사고', '도덕 윤리적 민감성'의 네 가지 범주로 나눠지며, 총 19가지의 요소를 포함한다. 원자력에너지와 안락사 쟁점에 대한 소집단 논증활동 사례를 분석한 결과, 이 분석틀을 이용하여 학생들의 상호작용으로 이루어지는 논증활동의 전체적인 흐름과 학생 발화의 역동성을 종합적으로 판단할 수 있었으며, 학생들의 담화가 SSI 추론의 특징을 얼마나 반영하는지 설명할 수 있었다. 본 연구에서 개발된 분석틀은 SSI 프로그램을 통한 논증활동 기술이나 의사결정과정의 향상을 알아보는 데 이용될 수 있을 것으로 기대된다.

• 과학교육연구지
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• 제42권1호
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• pp.66-79
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• 2018

본 연구의 목적은 TIMSS 2015 결과에서 상위 성취를 보인 5개국(대한민국, 싱가포르, 대만, 홍콩, 일본)에서 8학년 과학성취에 미치는 교육맥락변인의 영향을 비교 분석하고, 이를 통해 우리나라 과학교육 개선을 위한 시사점을 도출하는 것이다. 과학성취에 미치는 교육맥락변인의 영향력을 비교하기 위해 위계선형모형에 의한 분석을 실시하였다. 연구결과에 따르면 우리나라는 학생수준 변인에서 가정의 학습자원, 과학학습에 대한 흥미, 과학에 대한 가치 인식, 학생의 교육기대 수준이 8학년 학생들의 과학성취도에 유의하게 정적인 영향을 미치는 것으로 나타났다. 학교수준 변인에서는 재학생의 경제적 배경, 학교의 학업적 성공 강조가 과학성취도에 유의하게 정적 영향을 미치는 것으로 나타났다. 상위 5개국 결과를 비교하면 가정의 학습자원, 과학학습에 대한 흥미, 학생의 교육기대 수준이 모든 국가에서 과학성취도에 정적으로 유의한 영향을 미치는 것으로 나타났다. 학교변인에서 재학생의 경제적 배경은 일본을 제외한 모든 나라에서 정적으로 유의한 것으로 나타났으며, 학생 특성에 의한 수업 제한은 우리나라를 제외한 모든 나라에서 정적으로 유의한 것으로 나타났으며, 실험보조 인력은 일본과 대만에서 정적으로 유의한 것으로 나타났다. 연구결과를 토대로 우리나라 중학교 과학과 교수학습에 주는 시사점을 학생과 학교의 사회경제적 지위에 따른 교육격차를 완화, 역량교육을 위한 과학 수업혁신, 과학수업에서 탐구실험 활동 내실화 등의 측면에서 제안하였다.

• 한국과학교육학회지
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• 제16권3호
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• pp.314-328
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• 1996

This study investigated the literature about science process skills' evaluation to analyse transition of evaluation objectives before and after a Scholastic Ability Test for College Entrance. In the literature survey the researcher established a 3 dimensional science assessment framework with X axis as science concept, Y axis as science process skills and Z axis as problem context. In order to analysis and compare each items the researcher selected 210 items from the 1st to the 7th trials and 138 items from the 1st to 4th Scholastic Ability Test for College Entrance and sampled 2873 science achievement test items from 10 high schools. In accordance with this taxonomy the researcher analysed and compared science process skills item forms. The following results were drawn : The items were evenly distributed in all the four areas(Earth Science, Biology, Physics and Chemistry) of the science concept domain, but they were heavily concentrated on data analysis and drawing a conclusion in science process domain. In the domain of problem context school context was the majority. In spite of distribution like this the ratio on science process skills measurement items and science achievement test items was increased after the Scholastic Ability Test for College Entrance was given. Also the ratio on item expression type was increased. Item form was almost 5 options selection type in the national level test. Although there were 4 options selection type, 5 options selection type, short answer type, essay type in school level test, rising from 33.1% to 65.5% on 5 options selection type is exhibited. This study showed that the school level item form was better various than the nation level. This point like this is the evidence for the improvement toward the science process skills test and influenced by Scholastic Ability Test for College Entrance. The ratio on the item which joined with the 3 axes had a mean of 99.3% in nation level test and mean 44.9% in school achievement test level. But the ratio in the school achievement test level increased after the Scholastic Ability Test for College Entrance was given. In view of this study we must furthermore study the item types which can evaluate valjdately science process skill's five stage each and evaluation method by the high school students' problem solving patterns and features in scientific inquiry on all science process skills elements.

• 대한지구과학교육학회지
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• 제12권2호
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• pp.119-130
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• 2019

TIMSS 평가는 4년 간격으로 실시되는데, 우리나라의 경우에는 TIMSS 2011에서 4학년으로 평가에 참여하였던 학생 모집단이 4년 뒤인 TIMSS 2015에서 8학년으로 다시 평가에 참여함으로써, 우리나라가 TIMSS 평가에 참여한 이래 처음으로 코호트 집단의 초등학교와 중학교 성취도 자료를 얻었다. 이에 본 연구에서는 초4에서 중2로 학년 및 학교급이 바뀌면서 나타나는 우리나라 학생들의 성취도 급락의 원인을 탐색하기 위해, TIMSS 2011의 초4와 TIMSS 2015의 중2에 공통으로 사용된 설문 문항들을 분석함으로써, 성취도 상위 5개국을 중심으로 학생 특성, 교사 특성 그리고 교실수업 특성과 관련된 교육맥락변인들의 변화를 분석하였다. 연구결과에 따르면 학생들의 학교 소속감은 초4에서 중2로 가면서 증가한 반면에, 과학 수업에 대한 학생들의 인식은 대부분의 항목들에서 긍정적 인식의 비율이 낮아지는 것으로 나타났다. 교사 특성과 관련하여, 교사의 전문성 개발 활동은 초4에서 중2로 가면서 더 증가하였고, 과학교사의 수업에 대한 자신감은 국제평균과 유사한 경향을 나타내었다. 교실수업 특성과 관련하여, 과학수업에서 탐구 관련 활동 유형별 빈도는 초4에서 최상위 수준이다가 중2에서 국제평균보다 더 낮아지는 것으로 나타났다. 연구결과를 토대로 우리나라 과학과 교수학습에 주는 시사점을 학교급별로 성취도 향상을 위한 차별화된 전략 마련의 필요성, 학생 참여형 수업으로 전환할 필요성, 과학 흥미에 영향을 주는 교육맥락변인에 대한 지속적인 연구의 필요성, 학생 성취도에 미치는 교사 수준의 교육맥락변인에 대한 심층연구의 필요성 등의 측면에서 제안하였다.

• 한국과학교육학회지
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• 제12권1호
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• pp.75-92
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• 1992

The purpose of this study was to point out the problems of the competency exam for college education, a new college entrance exam, and to suggest the improvement ideas for it For this purpose, the test items of science inquiry were taken from the first, the second and the third pilot studies of the competency exam for college education which National Institute of Educational Evaluation had done. These tests were administered to 1,223 students of the general high school(422 for the 1st 400 for the 2nd, and 401 for the 3rd test). Also, those students' and the high school science teacher's opinions about the tests and the new college entrance exam were surveyed. The evaluation objectives of those test items were analyzed and the test item analyses were done. The results were as follows; (1) The evaluation objective analysis showed that most of the test The purpose of this study was to point out the problems of the competency exam for college education, a new college entrance exam, and to suggest the improvement ideas for it For this purpose, the test items of science inquiry were taken from the first, the second and the third pilot studies of the competency exam for college education which National Institute of Educational Evaluation had done. These tests were administered to 1,223 students of the general high school(422 for the 1st, 400 for the 2nd, and 401 for the 3rd test). Also, those students' and the high school science teacher's opinions about the tests and the new college entrance exam were surveyed. The evaluation objectives of those test items were analyzed and the test item analyses were done. The results were as follows; (1) The evaluation objective analysis showed that most of the test items were constructed based on the evaluation framework which was composed of scientific inquiry thinking ability, science concept, and scientific inquiry context dimensions. But, those items were unevenly distributed into a few areas of the evaluation framework. (2) The boys had higher mean scores than the girls in all of the tests, but these differences were not statistically significant. The natural science course students had significantly higher mean than the humanities course students in all of the test:(1st, F=12.643, p=0.0004 ; 2nd, F=45.757, p=0.0001 ; 3rd, F=36.162, p=0.0001). A significant interaction of sex and course was found in only 1st test( F=11.352. p=0.0008). (3) Most students answered the test was difficult and they needed more time to finish it Also, they added they had to study in a different way from the traditional one in order to prepare the new college entrance exam. Science teachers answered that those evaluation objectives of the tests corresponded well with the educational objectives of high school science and that the tests were suitable as measuring instruments of the scientific thinking abilities. But they pointed out it would be very difficult for them to teach students for preparing the exam under the exsting educational conditions. To carry out successfully the competency exam for college education, the following improvements were suggested. (1) Good evaluation methodology should be developed. (2) In-service science teacher training models on evaluation should be put in force. (3) Effective teaching models and strategies should be developed.(4) The high school science curriculum should be revised.