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학습용 전자책의 텍스트 길이와 정보탐색 유형이 시선고정 시간, 인지부하, 학습이해도에 미치는 영향
류지헌 ( Jee Heon Ryu ),문제웅 ( Je Woong Moon ) 안암교육학회 2013 한국교육학연구 Vol.19 No.3
이 연구의 목적은 학습용 전자책 설계전략을 도출하기 위하여 수행되었다. 이를 위하여 텍스트의 줄 길이와 정보탐색 유형에 의한 차이를 분석했다. 정보탐색 유형은 정보찾기(scanning)와 훑어보기(skimming)로 구분되었으며, 텍스트의 줄 길이는 긴 줄 조건과 짧은 줄 조건으로 구분되었다. 정보탐색을 위해서는 화면에 제시된 텍스트에 대한 시각적인 정보 처리가 필요하며, 텍스트의 줄 길이는 학습자의 시선동작에 중요한 영향을 미칠 수 있다. 이 연구에 투입된 연구대상은 대학생 26명이었으며(여학생=19명, 남학생=7명), 시선고정 시간, 인지부하요인, 학습이해도의 차이를 분석했다. 시선고정 시간을 측정하기 위해서 시선추적 장치를 활용했으며, 정보찾기와 훑어보기에 대한 반복측정 방법을 적용했다. 인지부하요인에 대해서는 과제수행에 따른 인지부하의 정도를 측정하고자 하였다. 또한 훑어보기에서는 이해 도검사를 통해서 학습이해도에 미치는 영향을 분석했다. 연구결과에 따르면 시선고정 시간은 과제가 반복될수록 유의미하게 증가하고 있는 것으로 나타났으며, 텍스트 줄 길이에 대해서 유의미한 상호작용효과가 나타났다. 또한 인지부하설문에 대해서는 훑어보기 과제를 수행할 때 읽기자료의 유용성 지각에서 유의미한 차이가 나타났다. 연구결과를 통하여 읽기과제에 따른 정보처리과정의 차이점을 확인할 수 있었다. The purpose of this study was to examine the effect of line length and information seeking strategy on eye-fixation time, cognitive load, and comprehension score. The participants of this study were twenty-six college students(female=19 and male=7). The independent variables were text line lengths (long=50 character per line vs. short=25 character per line) and types of information seeking strategies (scanning vs. skimming). The dependent variables were eye-fixation time, cognitive load factor, and comprehension scores. For the eye-fixation time, the eye tracking method was applied for this study. The participants were randomly assigned either long line or short line format of expository text. The participants were asked to perform two reading tasks: Scanning and Skimming. Scanning task was to find out specific concept or keyword, and skimming task was to summarize the passage. For the eye-fixation time there were significant differences between types of information seeking strategies. When the participants were asked to perform a skimming task, their eye-fixation time was significantly increased compared to scanning task conditions. Further, the participants` eye-fixation time showed significant interaction effect between types of information seeking strategies and line lengths. This result revealed that line length can be an important design factor when a learner is reading e-book for learning. There was a significant difference of cognitive load factors in skimming condition. The participants with short line length condition showed higher perception of usefulness. There was no significant difference by comprehension scores. The study made three suggestions for those who are designing e-books for studin.
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이종성,문제웅 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.A
Many industrial products such as paints, ink and adhesives are composed of the ingredients of a mixture. In mixture experiments, the characteristics of quality(response) depends only on the proportions of the ingredients and does not depend on the total amount of the mixture. This article discusses the constrained mixture experimental design, the data analysis, and the optimum formulation of ingredients based on the two quality characteristics - taste and flavor. It is shown that efficient designs can be constructed from D-optimal criterion. Special cubic models were selected as the final mixture response surfaces for both reponses. The desirability function was used for the optimization of the two responses.
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십이지장을 침범한 Henoch-Shoenlein Purpura 1예
김호정,신경철,김규태,김종숙,조병섭,이향주,최대섭,문제웅,안재곤,이병철,전하영,이인환,권학중,장석일 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.4
Henoch-Shonlein(H-S) purpura, or anaphylactoid purpura is a hypersensitivity vasculitis characterized by palpable purpura usually on buttock and low extremities; arthralgia mostly polyarhtralgia in the absence of frank arthritis; gastraintestinal involvement with colicky abdominal pain, nausea, vomiting, diarrhea, constipation and bleeding and renal involvement, manifested chiefly by hematuria and proteinuria. Gastrointestinal involvement is seen in 70 percent of pediatric patients and one third of adult patients. Any portion of the gastrointestinal tract distal to the esophagus maybe involved, but most frequently affected sites are jejunum and ileum. We report one case of H-S purpura with duodenal involvement observed in 16, male patient.
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위선암과 우측 쇄골상 림프절의 호지킨씨 림프종이 병발한 이중 원발성 암 1 예
김호정,김규태,최대섭,김택수,천대철,문제웅,변정원,박석오,이병철,조병섭,안재곤 대한내과학회 1996 대한내과학회지 Vol.50 No.6
Double primary cancer is defined as the case of primary malignant tumors, which must be arise in different sites and have a different histologic appearances. This article is a case report of synchronous double primary cancers. We have experienced with double primary malignant tumors of different site of origin such as stomach adenocarcinoma and Hodgkin's lymphoma of right supraclavicular lymph node, which were diagnosed by biopsies with gastrofibroscopy and fine needle aspiration of right supraclavicular lymph node. For its great rarity, we report this case with review of literatures.
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김호정,이향주,신경철,김규태,이병철,조병섭,전하영,이인환,최대섭,장석일,문제웅,안재곤,권학중 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.2
The anisakiasis disease that is infected through various kinds of larvae of the anisakis family when sea fish ia eaten uncooked or half-cooked. Sinee Van Thiel, a Netherlander, found in 1960 that anisakis larvae parasitize upon the human intestinal tract of the patients who suffer from ahdomieal pain after eating herrings, there have been a number of similar reports in North America and Japan, and the clinical importance of anisakis larvae for the acute gastrontestinal infection is rising. In general, as raw sea fish is not regarded as a source of parasite infestation, the patients who had eaten it and suffered from acute abdominal pain and vomiting are considered as and to be treated of food poisoning. But it is highly possible that some of them suffer from the acute gastrointestinal symptom caused by anisakis larvae. Thereby we report on 7 examples of anisakiasis taken through endoscopic diagnosis of the patients who have the acute upper abdominal pain after eating raw sea fish.
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