• Journal of the Korea Convergence Society
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• v.8 no.10
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• pp.209-214
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• 2017

The aim of the present study was to analyze the factors that affects the peer attachment in Korean youth. Subjects were 419 middle school students (210 male, 209 female). Dependent variable was defined as peer attachment. Explanatory variables were included as gender, academic achievement satisfaction, subjective household economy level, parent - child dialogue frequency, subjective health status, depression symptom, self - esteem, subjective life satisfaction, and mobile phone dependency. In the multi-layer perceptron artificial neural network algorithm analysis, depression symptoms, gender, parent-child dialogue level for school life, subjective household economy level, subjective health status were significantly associated with peer attachment in Korean youth. Based on this result, systematic programs are required in order to prevention of peer attachment in Korean youth.

• Korean Journal of Construction Engineering and Management
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• v.12 no.3
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• pp.62-72
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• 2011

As the construction industry is becoming large and complex, it is difficult to understand the overall business workflow and provide the required information. Accordingly, researches on the introduction of Interactive Electronic Technical Manual (IETM), used in manufacturing/maintenance industry, is being carried. In the case of construction projects, Frequent changes of relevant information occur according to changes in the project environments, so it is difficult for administrators to gather and organize the information. Therefore, this research suggests the Information Management Model for Construction Electronic Manual using Collective Intelligence to support the information changes, by expand the information mangers from the system administrators to the whole users and verify the model by applying the model to Urban Regeneration Electronic Manual.

• Journal of Digital Convergence
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• v.20 no.3
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• pp.53-61
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• 2022

The purpose of this study was to test whether or not the AI chatbot is effective in acquiring target grammar for Korean EFL college students: prepositions and articles. A quasi-experiment was conducted with 46 first-year students taking part in a required English course. They were randomly divided into two groups: the experimental and control groups (23 students for each, respectively). The experimental group was engaged in six chat sessions with a chatbot over 6 weeks. A pretest and a posttest were used to examine the effectiveness of the chatbot by comparing any changes made in error frequencies of the target grammar in participants' English compositions. The results show that after a conversation with the chatbot, the experimental group significantly reduced the mean of omission errors in both prepositions and articles. To have a great effect in other error categories, chatbot feedback needs to be improved to reduce short responses or inaccurate utterances of students and induce them to actively participate in the conversation.

• Journal of The Korean Association For Science Education
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• v.32 no.5
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• pp.1007-1026
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• 2012

The purpose of this study was to develop analytic framework for dialogic argumentation to show the context and flow visualizing interactions of argumentation, to be able to present quality of argumentation specifically. For this, we formulated a method of the argumentation diagram using feature of diagram simple and structurally visualizing interrelation between argument components, and then quantified quality of argumentation to argument level score on this basis. We have developed the learning material for argumentation about a vertical circular motion and used the obtained translations from applying it in developing the framework. We chose argument statements among full transcript and then coded as Toulmin's argument components, and these codes was effectively arranged and linked to show argumentation diagram. Results by argumentation diagram could be useful understanding of interactive argumentation context and the flow and present frequency, the combination of argument elements, rough qualitative level of argumentation. To quantify argumentation quality, we gave different scores to different link lines reflecting indication of argumentation quality like that diversity of argument component, justification, presence or absence of rebuttals. The process of identification of argument level is very simple, qualitative level of argumentation represented as concrete score could present various and concrete argument level. Developed analytic framework might contribute to argumentation research field, because it can present effectively dialogic argumentation result. Also, various analysis cases might guide designing an effective argumentation practice and circular motion learning.

• The Journal of the Korea Contents Association
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• v.15 no.6
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• pp.33-42
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• 2015

As smart phones have been increasingly used to access information with bigger screens and higher resolution, smart phones have rapidly grown larger. Even Apple which had stuck to the 4-inch smart phone screen size, released 5.5-inch iPhone 6 plus. In this trend of smart phone enlargement, manufacturers have mostly incorporated one-handed modes to 5-inch or larger phones to keep the convenience of one-handed operation. But most of them provide just smaller screens and are rather complicated to set up after several menus to touch. In this study, this research examined one-handed functions of each smart phone manufacturer to understand problems in the one-handed smart-phone manipulation of web-browsing which is one of the frequent smart phone services. And by investigating smart phone users, this research found out requirements for one-handed web search operation. Based on this examination, the author of this research designed an efficient one-handed interface for mobile web-search without reducing the screen size. Then, to assess the possible usability improvement, the prototype was applied to a large 5.5-inch-screen smart phone to evaluate its performance through observation and surveys and find out manipulation satisfaction and further improvements.

• Horticultural Science & Technology
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• v.31 no.6
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• pp.714-719
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• 2013

The bent peduncle phenomenon (BPP) is known as a kind of physiological disorders found in cut rose plants, which causes the reduction of cut flower yields. As yet unknown mechanisms, however, it has not been easy to find solutions for BPP. To address this challenge, this study was conducted to investigate the characteristics of floral morphology, growth, and endogenous phytohormone level of BPP shoots in cut rose plants (Rosa hybrida L. 'Beast'). Morphological observation confirmed the fact that BPP was accompanied by the early formation and being phyllody of a specific sepal among five sepals, which gave rise to peduncle bending in the upper part of the phyllody with fasciation. Year-round BPP frequency in 'Beast' cultivar was in the range of 5 to 20% with seasonal change, increasing rapidly with an average temperature rise in summer. Except bent peduncle, the BPP shoots appeared to grow normally in terms of speed and size of floral development in comparison with normal. However, carbohydrate distribution to the floral part in BPP shoots was significantly reduced. The level of endogenous IAA (3-Indoleacetic acid) within the floral part in BPP shoots was highly maintained during floral development, in contrast to normal shoots. $GA_3$ contents were not significantly different between normal and BPP shoots. This study indicates that BPP would be induced by a series of courses: abnormally early formation of a specific sepal relative to high temperature, being phyllody of the sepal with fasciation, and continuous supply of endogenous IAA by phyllody.

• Journal of The Korean Association For Science Education
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• v.29 no.4
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• pp.400-413
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• 2009

The purpose of this study was to investigate middle school students' processes of argumentation in science lessons and to compare students' argumentation in different contexts (socioscientific context/scientific context). An argumentation-based teaching-learning strategy was used to enhance quality in students' arguments in science lessons. Data were collected from five lessons by video- and audio-recording eight groups of four students each engaging in argumentation. The quality and frequency of students' argumentation was analyzed using an assessment framework based on the work of Toulmin. The findings showed that: (a) there was improvement in the quality of students' argumentation; (b) there were no differences in the structure of argumentation and percentage of explanatory argumentation components as well as dialogic argumentation components in different argumentation contexts. The results of this study showed that students' argumentation can be enhanced with strategic argumentation teaching-learning.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.1313-1318
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• 2006

게임이 생활의 일부분과 산업구조상 핵심산업으로 자리하면서 그 사용빈도가 점점 증가하고 있으나 그 주 사용층이 젊은층이고 온라인 형태의 게임컨텐츠가 주를 이루면서 사용자들의 체력저하 및 개인화, 그리고 그들 가족간의 대화시간이 줄어들고 있다. 본 논문에서는 개인화되는 온라인 게임을 탈피하여 게임의 장르를 가족형 게임 (Family Game), 아웃도어 (Outdoor) 그리고 협력(Cooperation)의 개념으로 설정하고, 게임 소재를 사회적 문제점으로 떠오르고 있는 다이어트로 함으로써 새로운 시각에서 가족 구성원 모두가 게임에 참여할 수 있는 다수 참여형 인터렉티브 게임, 펀치 펀치 다이어트 (Punch Punch Diet)를 구현하였다. 본 논문에서 구현한 펀치펀치다이어트 게임은 대형스크린을 기반으로 한 가족형 게임에 관한 것으로, 컴퓨터 비전을 이용하여 게임참여자의 특정색상 및 패턴검출을 함으로써 기존의 마우스와 조이스틱등이 가지고 있던 정적인 입력인터페이스 방식을 탈피하여 게임 참여자 모두가 몸의 위치를 입력으로 이용하는 직관적 사용자 입력 인터페이스를 사용하였다. 펀치펀치 다이어트 게임은 기존 게임이 가지고 있던 "사람-(물리적 입력장치)-게임"의 관계를 "사람-(비접촉 입력장치)-게임"의 관계로 매핑한 게임으로 게임에 참여하는 사용자가 특별한 컴퓨터 입력장치 조작에 관련된 지식없이도 능동적으로 게임에 참여할 수 있도록 하였다.

• Journal of the Korea Convergence Society
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• v.9 no.7
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• pp.17-24
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• 2018

One of the major issues in big data processing is extracting keywords from internet and using them to process the necessary information. Most of the proposed keyword extraction algorithms extract keywords using search function of a large portal site. In addition, these methods extract keywords based on already posted or created documents or fixed contents. In this paper, we propose a KAES(Keyword Advertisement Extraction System) system that helps the potential shopping keyword marketing to extract issue keywords and related keywords based on dynamic instant messages such as various issues, interests, comments posted on SNS. The KAES system makes a list of specific accounts to extract keywords and related keywords that have most frequency in the SNS.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.2
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• pp.807-814
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• 2014

The purpose of this study is to analyze storytelling factors and mathematics contents of 'Eddy, the clever fox' on TV animation. The scenario and animation were analyzed according as criterion based on relevant materials. The results are as follows: First, Characters are 11 animals, Eddy is a problem solver. An ordinary story happens in the snow-covered woodland village. There is no story plot. And the story consists dialogue, song and narration. Second, mathematics contents in the animation appear in order number sense, geometry, measurement, data analysis and probability, pattern. So 'Eddy, the clever fox' is valuable as edutainment.