• 제목/요약/키워드: School Mathematics

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지식상태분석법을 이용한 학습 진단평가도구로의 활용성 분석 (Analysis for Practical use as a Learning Diagnostic Assessment Instruments through the Knowledge State Analysis Method)

  • 박상태;이희복;정기주;김석천
    • 한국과학교육학회지
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    • 제27권4호
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    • pp.346-353
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    • 2007
  • 본 연구에서는 그동안의 평가결과로부터 얻을 수 없었던 집단별, 개인별 정보를 끄집어 낼 수 있는 평가도구를 소개하고 있다. 본 연구의 목적은 우리 나라 중고등학생들에게 적용 가능하며, 학생들의 평가결과를 이용하여 학습준비도 및 학습진전도를 파악할 수 있는 지식상태분석법의 활용성을 분석하는 것이다. 이를 위해 마찰전기 평가 문항을 개발하고 개발된 평가문항에 대하여 지식공간론을 적용하여 중학교 2학년 학생들의 평가결과를 분석하였다. 학습전 학생들의 지식상태는 문항간 위계 관계가 형성되지 않았고, 예상위계도에 비해 학생들의 마찰전기에 대한 지식상태가 비구조화 되어 있는 것으로 나타났다. 학습 후에는 학습 전보다는 좀 더 세분화되고 구조화된 위계 관계로 지식상태가 변화했음을 볼 수 있었다. 학습후에 얻어진 학생들의 위계도를 이용하여 학습전 학습자 집단 혹은 학습자 개인의 지식상태를 분석할 수 있었고, 학습전 학생들의 지식상태와 학습후의 지식상태를 비교하여 학생들이 학습한 과학개념의 구조를 가시적으로 파악하는 것이 가능하였으며, 학습자 개개인에 대한 학습전후 진단도 가능한 것으로 나타났다. 따라서 지식상태분석법을 학습 진단평가도구로 활용할 수 있다고 볼 수 있다.

알지오매스 기반 수업이 수학적 문제해결력 및 태도에 미치는 효과: 초등학교 5학년 '직육면체' 단원을 중심으로 (The Effect of Mathematics Classes Using AlgeoMath on Mathematical Problem-Solving Ability and Mathematical Attitude: Focusing on the 'Cuboid' Unit of the Fifth Grade in Elementary School)

  • 이승동;이종학
    • 과학교육연구지
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    • 제48권1호
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    • pp.47-62
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    • 2024
  • 본 연구의 목적은 초등학교 5학년을 대상으로 알지오매스를 활용한 수업이 학생들의 수학적 문제해결력 및 수학적 태도에 미치는 효과를 알아보는 데 있다. 이를 위해서 초등학교 5학년 수학 교과서의 '직육면체'를 재구성한 알지오매스 기반 교수·학습자료를 사용해서 총 8차시의 실험 수업을 실시하였다. 그리고 실험 수업의 전후에 수집한 양적 자료들을 통계적으로 분석하였고, 또한 알지오매스를 활용한 실험 수업의 장면을 구체적으로 제시함으로써, 수학적 문제해결력과 태도의 측면에서 공학을 활용한 수업의 효과와 실제를 알아보았다. 본 연구의 결과는 다음과 같다. 첫째, 수학적 문제해결력검사에서 실험집단과 비교집단은 유의수준 0.05에서 유의미한 차이가 있었다. 즉, 알지오매스를 활용한 수업은 수학적 문제해결력의 신장에 효과가 있는 것으로 나타났다. 둘째, 수학적 태도 검사에서 실험집단과 비교집단은 유의수준 0.05에서 유의미한 차이가 없었지만, 수학적 태도의 모든 하위 요소들에 대해서 실험집단이 비교집단보다 평균 점수가 상승한 것으로 나타났다.

비대면 원격수업 형태 중 실시간 쌍방향 수업 자료 개발 사례 연구: 고등학교 기하 과목 공간도형 단원의 평면의 결정 요건을 중심으로 (A Case Study on the Development of Real-Time Interactive Class Data among Non-face-to-Face Remote Class Types)

  • 이동근;안상진
    • 한국수학교육학회지시리즈E:수학교육논문집
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    • 제35권2호
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    • pp.173-191
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    • 2021
  • 본 연구는 국내 선행 연구에서 '팬데믹(pandemic)시기에 교사들을 대상으로 진행한 설문 조사 결과 원격수업 형식 중 '실시간 쌍방향 형' 수업이 차지하는 비중이 현저하게 적다는 점'을 지적한 것에 주목하여, 고등학교 수학 교과 기하 과목의 '평면의 결정 요건'을 중심으로 '실시간 쌍방향 형' 비대면 수업 자료를 개발하여 수업에 적용한 사례를 보고한 연구이다. 개발에 참여한 교사는 고등학교 교직 경력 28년차의 서울 소재 고등학교에 근무하는 수학 교사(수석교사) 1인이며, 2020년에 수학 교과의 기하 과목을 담당한 교사이다. 개발 교사는 실시간 쌍방향 형 비대면 수업을 개발하기로 한 이후, 수업 내용의 선정과 온라인 수업 도구를 선정하는 과정을 거친 다음 '만남 및 수업 안내', '동기 부여', '과제 제시', '개별 탐구 활동 및 교사 피드백', '성찰 및 평가'의 네 단계로 수업 지도안을 구성하여 자료를 개발하였다. 특히 '동기 부여' 과정에서는 개발 교사가 화이트보드 애니메이션 제작 프로그램인 Videoscribe를 이용해서 5분 정도의 영상 자료를 제작하여 제시하였으며, '과제제시'에서 과제 8번의 경우에는 학생들의 수업 종료 이후 자유로운 소감을 기록하는 것으로 구성하였는데, 이는 학생 스스로의 평가 장치임과 동시에 학생의 교사에 대한 피드백 제공 역할을 하였다. 본 연구는 현장 교사가 수업 자료를 개발하는 일련의 과정을 소개한 사례 연구로서, 수업에 바로 적용 가능한 수업 자료 제시와 더불어서 이후 수업 자료 개발에 대한 샘플 제시 역할에 목표를 두고 진행한 연구 결과물이다. 개발한 자료는 수업에 참여한 학생들의 의견 수렴 및 수학교사 3인에게 의뢰한 평가 결과를 바탕으로 수업 자료로서의 적합성 검증을 거쳤다.

간호학 교과과정 개선을 위한 조사 연구 (A Study on improvement of curriculum in Nursing)

  • 김애실
    • 대한간호학회지
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    • 제4권2호
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    • pp.1-16
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    • 1974
  • This Study involved the development of a survey form and the collection of data in an effort-to provide information which can be used in the improvement of nursing curricula. The data examined were the kinds courses currently being taught in the curricula of nursing education institutions throughout Korea, credits required for course completion, and year in-which courses are taken. For the purposes of this study, curricula were classified into college, nursing school and vocational school categories. Courses were directed into the 3 major categories of general education courses, supporting science courses and professional education course, and further subdirector as. follows: 1) General education (following the classification of Philip H. phoenix): a) Symbolics, b) Empirics, c) Aesthetics. 4) Synthetics, e) Ethics, f) Synoptic. 2) Supporting science: a) physical science, b) biological science, c) social science, d) behavioral science, e) Health science, f) Educations 3) Professional Education; a) basic courses, b) courses in each of the respective fields of nursing. Ⅰ. General Education aimed at developing the individual as a person and as a member of society is relatively strong in college curricula compared with the other two. a) Courses included in the category of symbolics included Korean language, English, German. Chines. Mathematics. Statics: Economics and Computer most college curricula included 20 credits. of courses in this sub-category, while nursing schools required 12 credits and vocational school 10 units. English ordinarily receives particularly heavy emphasis. b) Research methodology, Domestic affair and women & courtney was included under the category of empirics in the college curricula, nursing and vocational school do not offer this at all. c) Courses classified under aesthetics were physical education, drill, music, recreation and fine arts. Most college curricula had 4 credits in these areas, nursing school provided for 2 credits, and most vocational schools offered 10 units. d) Synoptic included leadership, interpersonal relationship, and communications, Most schools did not offer courses of this nature. e) The category of ethics included citizenship. 2 credits are provided in college curricula, while vocational schools require 4 units. Nursing schools do not offer these courses. f) Courses included under synoptic were Korean history, cultural history, philosophy, Logics, and religion. Most college curricular 5 credits in these areas, nursing schools 4 credits. and vocational schools 2 units. g) Only physical education was given every Year in college curricula and only English was given in nursing schools and vocational schools in every of the curriculum. Most of the other courses were given during the first year of the curriculum. Ⅱ. Supporting science courses are fundamental to the practice and application of nursing theory. a) Physical science course include physics, chemistry and natural science. most colleges and nursing schools provided for 2 credits of physical science courses in their curricula, while most vocational schools did not offer t me. b) Courses included under biological science were anatomy, physiologic, biology and biochemistry. Most college curricula provided for 15 credits of biological science, nursing schools for the most part provided for 11 credits, and most vocational schools provided for 8 units. c) Courses included under social science were sociology and anthropology. Most colleges provided for 1 credit in courses of this category, which most nursing schools provided for 2 creates Most vocational school did not provide courses of this type. d) Courses included under behavioral science were general and clinical psychology, developmental psychology. mental hygiene and guidance. Most schools did not provide for these courses. e) Courses included under health science included pharmacy and pharmacology, microbiology, pathology, nutrition and dietetics, parasitology, and Chinese medicine. Most college curricula provided for 11 credits, while most nursing schools provide for 12 credits, most part provided 20 units of medical courses. f) Courses included under education included educational psychology, principles of education, philosophy of education, history of education, social education, educational evaluation, educational curricula, class management, guidance techniques and school & community. Host college softer 3 credits in courses in this category, while nursing schools provide 8 credits and vocational schools provide for 6 units, 50% of the colleges prepare these students to qualify as regular teachers of the second level, while 91% of the nursing schools and 60% of the vocational schools prepare their of the vocational schools prepare their students to qualify as school nurse. g) The majority of colleges start supporting science courses in the first year and complete them by the second year. Nursing schools and vocational schools usually complete them in the first year. Ⅲ. Professional Education courses are designed to develop professional nursing knowledge, attitudes and skills in the students. a) Basic courses include social nursing, nursing ethics, history of nursing professional control, nursing administration, social medicine, social welfare, introductory nursing, advanced nursing, medical regulations, efficient nursing, nursing english and basic nursing, College curricula devoted 13 credits to these subjects, nursing schools 14 credits, and vocational schools 26 units indicating a severe difference in the scope of education provided. b) There was noticeable tendency for the colleges to take a unified approach to the branches of nursing. 60% of the schools had courses in public health nursing, 80% in pediatric nursing, 60% in obstetric nursing, 90% in psychiatric nursing and 80% in medical-surgical nursing. The greatest number of schools provided 48 crudites in all of these fields combined. in most of the nursing schools, 52 credits were provided for courses divided according to disease. in the vocational schools, unified courses are provided in public health nursing, child nursing, maternal nursing, psychiatric nursing and adult nursing. In addition, one unit is provided for one hour a week of practice. The total number of units provided in the greatest number of vocational schools is thus Ⅲ units double the number provided in nursing schools and colleges. c) In th leges, the second year is devoted mainly to basic nursing courses, while the third and fourth years are used for advanced nursing courses. In nursing schools and vocational schools, the first year deals primarily with basic nursing and the second and third years are used to cover advanced nursing courses. The study yielded the following conclusions. 1. Instructional goals should be established for each courses in line with the idea of nursing, and curriculum improvements should be made accordingly. 2. Course that fall under the synthetics category should be strengthened and ways should be sought to develop the ability to cooperate with those who work for human welfare and health. 3. The ability to solve problems on the basis of scientific principles and knowledge and understanding of man society should be fostered through a strengthening of courses dealing with physical sciences, social sciences and behavioral sciences and redistribution of courses emphasizing biological and health sciences. 4. There should be more balanced curricula with less emphasis on courses in the major There is a need to establish courses necessary for the individual nurse by doing away with courses centered around specific diseases and combining them in unified courses. In addition it is possible to develop skill in dealing with people by using the social setting in comprehensive training. The most efficient ratio of the study experience should be studied to provide more effective, interesting education Elective course should be initiated to insure a man flexible, responsive educational program. 5. The curriculum stipulated in the education law should be examined.

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제 1, 2회 학생 과학 공동탐구 토론대회의 종합적 평가 (Summative Evaluation of 1993, 1994 Discussion Contest of Scientific Investigation)

  • 김은숙;윤혜경
    • 한국과학교육학회지
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    • 제16권4호
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    • pp.376-388
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    • 1996
  • The first and the second "Discussion Contest of Scientific Investigation" was evaluated in this study. This contest was a part of 'Korean Youth Science Festival' held in 1993 and 1994. The evaluation was based on the data collected from the middle school students of final teams, their teachers, a large number of middle school students and college students who were audience of the final competition. Questionnaires, interviews, reports of final teams, and video tape of final competition were used to collect data. The study focussed on three research questions. The first was about the preparation and the research process of students of final teams. The second was about the format and the proceeding of the Contest. The third was whether participating the Contest was useful experience for the students and the teachers of the final teams. The first area, the preparation and the research process of students, were investigated in three aspects. One was the level of cooperation, participation, support and the role of teachers. The second was the information search and experiment, and the third was the report writing. The students of the final teams from both years, had positive opinion about the cooperation, students' active involvement, and support from family and school. Students considered their teachers to be a guide or a counsellor, showing their level of active participation. On the other hand, the interview of 1993 participants showed that there were times that teachers took strong leading role. Therefore one can conclude that students took active roles most of the time while the room for improvement still exists. To search the information they need during the period of the preparation, student visited various places such as libraries, bookstores, universities, and research institutes. Their search was not limited to reading the books, although the books were primary source of information. Students also learned how to organize the information they found and considered leaning of organizing skill useful and fun. Variety of experiments was an important part of preparation and students had positive opinion about it. Understanding related theory was considered most difficult and important, while designing and building proper equipments was considered difficult but not important. This reflects the students' school experience where the equipments were all set in advance and students were asked to confirm the theories presented in the previous class hours. About the reports recording the research process, students recognize the importance and the necessity of the report but had difficulty in writing it. Their reports showed tendency to list everything they did without clear connection to the problem to be solved. Most of the reports did not record the references and some of them confused report writing with story telling. Therefore most of them need training in writing the reports. It is also desirable to describe the process of student learning when theory or mathematics that are beyond the level of middle school curriculum were used because it is part of their investigation. The second area of evaluation was about the format and the proceeding of the Contest, the problems given to students, and the process of student discussion. The format of the Contests, which consisted of four parts, presentation, refutation, debate and review, received good evaluation from students because it made students think more and gave more difficult time but was meaningful and helped to remember longer time according to students. On the other hand, students said the time given to each part of the contest was too short. The problems given to students were short and open ended to stimulate students' imagination and to offer various possible routes to the solution. This type of problem was very unfamiliar and gave a lot of difficulty to students. Student had positive opinion about the research process they experienced but did not recognize the fact that such a process was possible because of the oneness of the task. The level of the problems was rated as too difficult by teachers and college students but as appropriate by the middle school students in audience and participating students. This suggests that it is possible for student to convert the problems to be challengeable and intellectually satisfactory appropriate for their level of understanding even when the problems were difficult for middle school students. During the process of student discussion, a few problems were observed. Some problems were related to the technics of the discussion, such as inappropriate behavior for the role he/she was taking, mismatching answers to the questions. Some problems were related to thinking. For example, students thinking was off balanced toward deductive reasoning, and reasoning based on experimental data was weak. The last area of evaluation was the effect of the Contest. It was measured through the change of the attitude toward science and science classes, and willingness to attend the next Contest. According to the result of the questionnaire, no meaningful change in attitude was observed. However, through the interview several students were observed to have significant positive change in attitude while no student with negative change was observed. Most of the students participated in Contest said they would participate again or recommend their friend to participate. Most of the teachers agreed that the Contest should continue and they would recommend their colleagues or students to participate. As described above, the "Discussion Contest of Scientific Investigation", which was developed and tried as a new science contest, had positive response from participating students and teachers, and the audience. Two among the list of results especially demonstrated that the goal of the Contest, "active and cooperative science learning experience", was reached. One is the fact that students recognized the experience of cooperation, discussion, information search, variety of experiments to be fun and valuable. The other is the fact that the students recognized the format of the contest consisting of presentation, refutation, discussion and review, required more thinking and was challenging, but was more meaningful. Despite a few problems such as, unfamiliarity with the technics of discussion, weakness in inductive and/or experiment based reasoning, and difficulty in report writing, The Contest demonstrated the possibility of new science learning environment and science contest by offering the chance to challenge open tasks by utilizing student science knowledge and ability to inquire and to discuss rationally and critically with other students.

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초등학생들의 과학 흥미 수준의 변화와 발달 특성에 관한 사례연구 (A Case Study of the Characteristics of Primary Students' Development of Interest in Science)

  • 최윤성;김찬종;최승언
    • 한국지구과학회지
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    • 제39권6호
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    • pp.600-616
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    • 2018
  • 이 연구의 목적은 과학 흥미가 발달한 초등학생의 특성을 심층적으로 탐색하는 것이다. 서울 소재 2개의 초등학교 201명을 대상으로 1년 동안 3차례에 걸쳐서 흥미 변화, 과학과 관련된 활동의 선호도와 참여도에 대한 설문조사를 실시하였다. 3차례의 설문조사에서 과학 흥미에 유의미한 변화를 보인 학생들을 대상으로 사례연구 참여 대상자를 모집하였다. 사례연구 참여에 동의한 7명의 학생들에게 12주에 걸쳐서 매일 과학관련 활동 포토저널을 작성해 줄 것을 요구하였다. 또한 연구 참여자는 2주에 한 번씩 연구자 중 한 명을 만나 총 6차례 반-구조화된 인터뷰에 참여하였다. 7명의 사례연구 참여자 중에서 과학 흥미가 상황적 흥미 II 수준까지 발달한 학생 1인과 개인적 흥미 I 수준까지 발달한 학생 1인, 총 2명(TK와 QQ)을 대표 사례로 선정하여 심층 분석을 실시하였다. 분석대상 자료는 설문조사 결과와 포토저널과 면담내용이었다. TK 학생은 상황적 흥미 II 수준에서 개인적 흥미 I 수준까지 발달한 사례로서 주로 집에서 직접 실험하기, 수학 활동하기, 동식물 기르기, 관찰하기 등을 하였으며, 비형식 교육기관을 방문하는 활동에도 참여하였다. 이 학생은 과학과 관련된 활동 장소로 학교 밖 환경을 주로 선택하였으며, 스스로 자유로운 형태로 활동에 참여하는 경향을 보였다. QQ 학생은 상황적 흥미 I 수준에서 상황적 흥미 II 수준까지 발달한 사례로서 사진 찍는 것을 자신의 대표 활동으로 하였다. 이 학생은 학생의 아버지 또는 연구자 중 1인과 함께 활동에 참여하는 경향을 보였다. 두 학생에게서는 장소 기반 활동, 타인과의 상호작용, 활동의 주체성이라고 하는 개인적 특성을 볼 수 있었다. TK 학생은 다양한 장소를 기반으로 활동에 참여하였으며 타인과 상호작용의 목적이 인지적인 영역에 도움을 받는 것이었다. 반면에 QQ 학생은 특정 장소를 기반으로 활동에 참여하였고 타인과 상호작용의 목적은 정서적인 교감이었다. 이 연구는 과학 흥미가 발달한 학생의 사례에서 학교 안과 밖 활동 및 함께하는 사람까지 포함한 특성을 밝혀내었다.

언어네트워크분석을 활용한 한국농수산대학 신입생 자기소개서 분석 - TF-IDF 분석을 기초로 - (Analyzing Self-Introduction Letter of Freshmen at Korea National College of Agricultural and Fisheries by Using Semantic Network Analysis : Based on TF-IDF Analysis)

  • 주진수;이소영;김종숙;김승희;박노복
    • 현장농수산연구지
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    • 제23권1호
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    • pp.89-104
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    • 2021
  • 비정형 데이터인 한국농수산대학 신입생 자기소개서에서 의미 있는 정보를 추출하기 위하여 핵심적인 역할을 하는 단어의 중요도를 평가하는 TF-IDF 가중치를 기초로 한 언어네트워크분석을 하였다. TF-IDF 가중치에 의한 핵심단어는 문항 1에서는 '농업', '수학', '공부', '문제', '친구', 문항 2에서는 '동아리', '식물', '친구', '농업', '작물', 문항 3에서는 '친구', '동아리', '의견', '갈등', '관리', 문항 4에서는 '버섯', '곤충', '아버지', '농업', '농장' 등으로 나타났다. 또한 빈도수는 낮은 단어이지만 핵심단어로 나타난 단어를 보면 문항 1에서는 '수학', '자격증', '성적', '영어', '과학', 문항 2에서는 '식물', '작물', '공부', '쓰레기', '발표', '실험', 문항 3에서는 '동아리', '청소', '봉사', '갈등', '봉사활동', 문항 4에서는 '버섯', '곤충', '양식', '한우', '조경' 등으로 나타났다. 단어들 간의 관계를 시각적으로 분석이 가능한 언어네트워크분석 결과 매개중심성이 높은 단어는 문항 1에서는 '이유', '고등학교', '재학', 문항 2에서는 '쓰레기', '고등학교', '학교', 문항 3에서는 '중요', '오해', '완성', 문항 4에서는 '가공', '사료', '농가'로 나타났다. 연결정도중심성은 문항 1에서는 '고등학교', '탐구', '성적', 문항 2에서는 '쓰레기', '정리', '수업시간', 문항 3에서는 '의견', '회의', '봉사활동', 문항 4에서는 '가공', '공간', '실습'으로 나타났다. 매개중심성 값이 클수록 네트워크의 중앙에 위치하고, 두 범주 사이의 관계가 강할수록 서로 근거리에 위치한다. 연결정도중심성이 클수록 노드의 크기가 크게 나타나며, 노드 연결선은 단어들의 동시 출현 빈도가 높을수록 edge가 굵게 나타났다. 동시 출현 빈도가 높은 즉 상관관계가 높은 단어 조합은 '자격증 - 취득', '문제 - 해결', '과학 - 생명', '오해 - 양보' 등으로 나타났다. 단어 기반의 계층적 클러스터링 기법에 의하여 단어 간 인접, 상호 관계를 계층적으로 나타낸 클러스터 덴드로그램으로 군집의 개수를 결정하였다. 단어들의 군집 간 비유사도의 차이가 큰 군집을 구한 결과 문항 1은 2개, 문항 2와 문항 4는 4개, 문항 3은 5개의 군집으로 분류할 경우 군집내 응집력이 높고, 군집 간 이질성이 큰 적절한 군집을 구할 수 있었다.

기업의 SNS 노출과 주식 수익률간의 관계 분석 (The Analysis on the Relationship between Firms' Exposures to SNS and Stock Prices in Korea)

  • 김태환;정우진;이상용
    • Asia pacific journal of information systems
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    • 제24권2호
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    • pp.233-253
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    • 2014
  • Can the stock market really be predicted? Stock market prediction has attracted much attention from many fields including business, economics, statistics, and mathematics. Early research on stock market prediction was based on random walk theory (RWT) and the efficient market hypothesis (EMH). According to the EMH, stock market are largely driven by new information rather than present and past prices. Since it is unpredictable, stock market will follow a random walk. Even though these theories, Schumaker [2010] asserted that people keep trying to predict the stock market by using artificial intelligence, statistical estimates, and mathematical models. Mathematical approaches include Percolation Methods, Log-Periodic Oscillations and Wavelet Transforms to model future prices. Examples of artificial intelligence approaches that deals with optimization and machine learning are Genetic Algorithms, Support Vector Machines (SVM) and Neural Networks. Statistical approaches typically predicts the future by using past stock market data. Recently, financial engineers have started to predict the stock prices movement pattern by using the SNS data. SNS is the place where peoples opinions and ideas are freely flow and affect others' beliefs on certain things. Through word-of-mouth in SNS, people share product usage experiences, subjective feelings, and commonly accompanying sentiment or mood with others. An increasing number of empirical analyses of sentiment and mood are based on textual collections of public user generated data on the web. The Opinion mining is one domain of the data mining fields extracting public opinions exposed in SNS by utilizing data mining. There have been many studies on the issues of opinion mining from Web sources such as product reviews, forum posts and blogs. In relation to this literatures, we are trying to understand the effects of SNS exposures of firms on stock prices in Korea. Similarly to Bollen et al. [2011], we empirically analyze the impact of SNS exposures on stock return rates. We use Social Metrics by Daum Soft, an SNS big data analysis company in Korea. Social Metrics provides trends and public opinions in Twitter and blogs by using natural language process and analysis tools. It collects the sentences circulated in the Twitter in real time, and breaks down these sentences into the word units and then extracts keywords. In this study, we classify firms' exposures in SNS into two groups: positive and negative. To test the correlation and causation relationship between SNS exposures and stock price returns, we first collect 252 firms' stock prices and KRX100 index in the Korea Stock Exchange (KRX) from May 25, 2012 to September 1, 2012. We also gather the public attitudes (positive, negative) about these firms from Social Metrics over the same period of time. We conduct regression analysis between stock prices and the number of SNS exposures. Having checked the correlation between the two variables, we perform Granger causality test to see the causation direction between the two variables. The research result is that the number of total SNS exposures is positively related with stock market returns. The number of positive mentions of has also positive relationship with stock market returns. Contrarily, the number of negative mentions has negative relationship with stock market returns, but this relationship is statistically not significant. This means that the impact of positive mentions is statistically bigger than the impact of negative mentions. We also investigate whether the impacts are moderated by industry type and firm's size. We find that the SNS exposures impacts are bigger for IT firms than for non-IT firms, and bigger for small sized firms than for large sized firms. The results of Granger causality test shows change of stock price return is caused by SNS exposures, while the causation of the other way round is not significant. Therefore the correlation relationship between SNS exposures and stock prices has uni-direction causality. The more a firm is exposed in SNS, the more is the stock price likely to increase, while stock price changes may not cause more SNS mentions.

ChatGPT의 수학적 성능 분석: 국가수준 학업성취도 평가 및 대학수학능력시험 수학 문제 풀이를 중심으로 (Analyzing Mathematical Performances of ChatGPT: Focusing on the Solution of National Assessment of Educational Achievement and the College Scholastic Ability Test)

  • 권오남;오세준;윤정은;이경원;신병철;정원
    • 한국수학교육학회지시리즈E:수학교육논문집
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    • 제37권2호
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    • pp.233-256
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    • 2023
  • 이 연구는 수학교육에서의 ChatGPT의 활용 방안 도출을 위한 기초 연구로서 국가수준 학업성취도 평가 및 대학수학능력시험 문제에 대한 ChatGPT의 응답을 분석하였다. ChatGPT는 생성형 인공지능 모델로서 여러 분야에서 주목 받고 있으며, 교육계에서도 ChatGPT 활용 방안에 대한 요구의 목소리가 높아지고 있다. 이에 이 연구에서는 3개년 국가수준 학업성취도 평가 및 대학수학능력시험 문제에 대한 ChatGPT 3.5의 응답에 대해서 정답률, 풀이 과정의 정확도, 오류 유형을 분류하여 분석하였다. ChatGPT의 국가수준 학업성취도 평가 문제 및 대학수학능력시험 문제의 정답률은 각각 37.1%, 15.97%로 나타났다. ChatGPT의 풀이 과정의 정확도는 5점 만점으로 산출하였을 때, 국가수준 학업성취도 평가는 3.44점, 대학수학능력시험은 2.49점으로 산출되었다. ChatGPT의 수학 문제를 풀이하는 데 나타나는 오류 유형은 절차적 오류와 기능적 오류로 나뉘었다. 절차적 오류는 다음 단계로의 식을 연결 짓는 과정이나 계산상의 오류를 가리키며, 기능적 오류는 ChatGPT가 텍스트를 인식, 판단, 출력하는 과정에서 발생하는 오류였다. 이러한 분석은 정답률만이 ChatGPT의 수학적 성능을 판단하는 기준이 되어서는 안 되며, 풀이 과정의 정확도나 오류유형까지도 복합적으로 고려해야 함을 시사한다.

실학파(實學派) 학인(學人) 홍대용(洪大容)의 중국(中國) 건축관(建築觀)과 북경(北京) 조선관(朝鮮館)에 관한 연구 (A Study on the Chinese Architectural View Point of Realist Hong Daeyong and Joseon Embassy in Beijing)

  • 한동수
    • 건축역사연구
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    • 제15권1호
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    • pp.29-40
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    • 2006
  • This paper is focused on Damheonseo(湛軒書), an anthology written by Hong Daeyong, and I deal with Chinese Architectural views which he had experienced in his itinerary to Beijing, and the vivid pictures of Joseonkwan (called the Koryo or Joseon Embassy) located in Beijing at that time. He was a scholar of great erudition over astronomy, mathematics, military science, politics, and so on. He was interested in practical sciences at early time, and criticized secular scholars full of vanity who had presented purposeless articles. In his age of 35, Qianlong(乾隆) 30 (1764, Youngjo 41), he, a military escort, accompanied by Hong Uk, Joseon envoy and his uncle. Before his itinerary, he self-studied Chinese. Also, during a long journey he got new experiences and information around each area, deviating his group whenever he had some times. He could get more variant experiences than others because of his character full of curiosity, and his observations from the vivid lives of the time helped us get various views between Chinese and Korean architecture. Likewise, although he denounced Qing(淸) scathingly as a barbarian, he mentioned several points about the characteristics of Chinese architecture at that time. First of all, totally Chinese architecture had strong rational and practical points. Secondly, based on bountiful products, buildings along streets shown in Chinese city had sophisticated compositions, and luxurious and magnificent appearances. Thirdly, using the brick from walls to houses was so universal. Fourthly, the layouts of building with three- or four-closed courtyard had very orderly shapes, and the structure of street was also so arranged. Finally, because of stand-up lives, the scales and appearances of interior space were even more extended, and storages were less developed than those of Joseon. As another points, I found that Joseonkwan was moved next to Shushangguan(庶常館)from Huidongnanguan(會同南館) around Hanlimyuan(翰林院), and had been remodeled into a house with Korean custom in using the inner spaces, although it was followed by a closed courtyard style. Likewise, I recognized that Ondols were sure to be established in all temporary houses during the journey to Qing, and felt their strong traditional residential custom in such mentions. Now that the past pictures have disappeared and ways of life and our values have been largely changed, this study has very important meaning in comparing the ancient Chinese and Korean architecture.

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