• Journal of The Korean Association For Science Education
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• v.32 no.7
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• pp.1251-1268
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• 2012

This study investigated several cases of interactive learning mediated by exhibits in a natural history hall during visits by middle school students. Five visiting cases were selected, in which visitors engaged actively in the interactions between them. Each visiting case was analyzed in terms of visiting discourse register and the modes of interaction in order to understand both visitors' meaning-making processes through the discourse flow and the characteristics of visiting discourse according to the features of exhibits. Results were as follows. The information provided in the exhibits was used as THEMEs in visitors' discourse and the visitors presented their information on the THEMEs as RHEMEs. The visitors made their own meaning for the exhibits by exchanging their information with each other. Interrogative sentences on the exhibit panels allowed visitors to make arguments. Similar exhibits displayed together helped visitors to compare those exhibits. These two features of the exhibits facilitated visitors' meaning-making processes in the natural history hall. The modes of interaction between visitors mediated by the exhibits showed that the information itself from the exhibits as well as visitors' opinion on the exhibits were frequently used as the elements for in-depth cognitive social interactions that allowed the visitors to construct meaning. Based on these results, we discussed that understanding in detail how visitors choose information from exhibits and construct visiting discourse is very important to improve visitors' collaborative science learning at a natural history hall.

• Journal of the Korea Convergence Society
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• v.12 no.12
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• pp.93-106
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• 2021

Blenderbot 2.0 is a dialogue model representing open domain chatbots by reflecting real-time information and remembering user information for a long time through an internet search module and multi-session. Nevertheless, the model still has many improvements. Therefore, this paper analyzes the limitations and errors of BlenderBot 2.0 from three perspectives: model, data, and dialogue. From the data point of view, we point out errors that the guidelines provided to workers during the crowdsourcing process were not clear, and the process of refining hate speech in the collected data and verifying the accuracy of internet-based information was lacking. Finally, from the viewpoint of dialogue, nine types of problems found during conversation and their causes are thoroughly analyzed. Furthermore, practical improvement methods are proposed for each point of view, and we discuss several potential future research directions.

• Journal of the Korea Computer Graphics Society
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• v.27 no.4
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• pp.1-9
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• 2021

Segmenting the compartments of neurons, such as axons, dendrites, and cell bodies, is helpful in the analysis of neurological phenomena. Recently, there have been several studies to segment the compartments through deep learning. However, this approach has the potential to include errors in the results due to noise in data and differences between training data and actual data. Therefore, in order to use these for actual analysis, it is essential to proofread the results. The proofreading process requires a lot of effort and time because an expert must perform it manually. We propose an interactive neuron structure proofreading method that can more easily correct errors in the segmentation results of a deep learning. This method proofread the neuron structure based on the characteristics of the neuron with structural consistency, so that a high-accuracy proofreading result can be obtained with less interaction.

• Journal of Popular Narrative
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• v.25 no.3
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• pp.303-345
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• 2019

This article analyzes the multi-layered communication in the Webtoon Princess Pari, released on the Daum portal site, created (written and illustrated) by Kim Naim, through analyzing the narrative structure and comments with the qualitative / quantitative methodology. The webtoon Princess Pari is structured in an omnibus style in which unit narratives are intermittently articulated, multi-lined, and interconnected. As integrated narratives which link with unitary narratives, Pari's growth story as a shaman and a romance narrative are structured. The classical original story of the shaman was used as a prehistory corresponding to the prequel of the webtoon through a preview, and the writer restructured the narrative to overcome the contradictions of the gender asymmetry and the patriarchal ideology of the original text. The viewer then creates a conversational space by giving critical and reflective comments. According to a statistical analysis conducted through sampling, the types of comments can be classified as follows: Appreciation and criticism of the contents ≫ Emotional response ≫ Intuitive overall review ≫ Knowledge and reflection ≫ Comments on comments. In the process of creation and acceptance of the Webtoon, a multi-layered dialogue between classical and modern, content and audience, acceptance and creation has been at play. In the creation dimension, the writer used a device to fill the gap of mythical symbols of the contents. At the level of the audience, they formed a culture of sharing information, knowledge, and reflection about tradition/folk/culture through comments. This corresponds to classical and modern dialogue through the webtoon. The viewers form a sympathetic bond, attempt hermeneutical coordination, supplement the information, and search for a balanced angle through controversial conversation. In addition, by commenting on attitudes, views, and perspective, the commentators showed a behavioral pattern corresponding to meta-criticism in literature. The viewers' comments acted as feedback on the creation of the webtoons, so that the creation and acceptance itself influenced the production of the content of the webtoon. The webtoon Princess Pari, which was based on Korean classical narrative, has been reorganized onto 'moving and dynamic' content, which leads to sense, thinking, criticism and reflection through the formation of various dialogues.

• Geophysics and Geophysical Exploration
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• v.11 no.1
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• pp.26-33
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• 2008

The analysis of wide-angle seismic reflection and refraction data plays an important role in lithospheric-scale crustal structure study. However, it is extremely difficult to develop an appropriate velocity structure model directly from the observed data, and we have to improve the structure model step by step, because the crustal structure analysis is an intrinsically non-linear problem. There are several subjective processes in wide-angle crustal structure modelling, such as phase identification and trial-and-error forward modelling. Because these subjective processes in wide-angle data analysis reduce the uniqueness and credibility of the resultant models, it is important to reduce subjectivity in the analysis procedure. From this point of view, we describe two software tools, PASTEUP and MODELING, to be used for developing crustal structure models. PASTEUP is an interactive application that facilitates the plotting of record sections, analysis of wide-angle seismic data, and picking of phases. PASTEUP is equipped with various filters and analysis functions to enhance signal-to-noise ratio and to help phase identification. MODELING is an interactive application for editing velocity models, and ray-tracing. Synthetic traveltimes computed by the MODELING application can be directly compared with the observed waveforms in the PASTEUP application. This reduces subjectivity in crustal structure modelling because traveltime picking, which is one of the most subjective process in the crustal structure analysis, is not required. MODELING can convert an editable layered structure model into two-way traveltimes which can be compared with time-sections of Multi Channel Seismic (MCS) reflection data. Direct comparison between the structure model of wide-angle data with the reflection data will give the model more credibility. In addition, both PASTEUP and MODELING are efficient tools for handling a large dataset. These software tools help us develop more plausible lithospheric-scale structure models using wide-angle seismic data.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.216-221
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• 2007

디지털 방송은 수많은 프로그램과 기존의 아날로그 방송에서 볼 수 없었던 다양한 서비스를 제공하며 발전하고 있다. 하지만 시청자들에게는 방송 서비스 채널과 기능이 많아질수록 원하는 채널을 검색하고 전환하는 과정이 어렵고 복잡한 일이 되어 버릴 수 밖에 없을 것이다. 이에 본 논문에서는 이러한 정보 획득과정의 축소를 위해 전통적인 리모콘으로 채널을 검색하고 이동하는 절차를 벗어나 음성인식을 통한 동적 EPG(Electronic Program Guide) 제어 시스템을 설계하고 구현하고자 한다. 이는 EPG정보와 시청자의 TV시청 성향 및 History를 기반으로 구동되는 시스템으로 음성대화의 구조적 정의가 가능한 VXML(VoiceXML) 인터프리터를 활용한다. 본 논문에서 제안하는 대화형 인터페이스는 다양한 디지털방송 서비스에 접목이 가능 할 것이며, 새로운 형태의 디지털 가전기기 파일럿 인터페이스 개발에 도움이 될 것이라 기대한다.

• Proceedings of the KIPE Conference
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• 2007.07a
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• pp.378-380
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• 2007

대화면 LCD TV (40인치 이상 LCD TV)에서 LCD 인버터의 가격 경쟁력을 위해 인버터 하나로 다수의 램프를 병렬 구동하면서 Two Stage System 구조인 Super IP Board 형태의 인버터 회로가 많이 사용되고 있다. 본 논문에서는 기존 Super IP Board의 인버터 구동 방식인 PWM 제어 방식을 분석하고, 문제점으로 제기되었던 Half-Bridge단 스위치의 하드 스위칭과 과도한 Circulating Energy 등의 문제를 해결한 새로운 Pulse Count Modulation (PCM) 방식을 적용한 인버터를 제안하고 이론적 및 실험적 검증을 통해 제안된 방식의 우수성을 확인하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.6
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• pp.465-475
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• 2018

The purpose of this study was to explore predictors of positive changes in children with divorced parents and to demonstrate the structural path among the perceived experience of social discrimination, parenting difficulties, parent-child communication, and internet use of children that related to positive changes based on family incomes. The subjects for this study were 1,114 single parents from divorced families sourced from a study on the status of single-parent families in 2015. The results of this study by using the structural equation model of the moderating effect verification with family incomes and multi group analysis are as follows. First, single-parent's perceived experience of social discrimination turned had a significant positive effect on parenting difficulties( =.354) and children's internet use ( =.234). Single-parent's perceived parenting difficulties also had a significant positive effect on children's internet use ( =.440) but a significant negative effect on both parent-child communication( =.192) and positive changes of children( =.218). Interestingly, internet use of children demonstrated a significant negative effect on their positive changes. Second, parent-child communication, parenting difficulties, and children's internet use had a negative mediating effect with the relationship where single-parent's perceived experience of social discrimination had an effect on positive changes of children( =.167). Second, between the family groups based on family incomes, there was no statistically significant difference in the structural relationship. Based on these results, this study presented a practical proposal to help single parents not experience social discrimination and to help decrease the internet use of children to improve positive changes.

• Journal of The Korean Association For Science Education
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• v.35 no.3
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• pp.509-521
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• 2015

Argumentation is a social and collaborative dialogic process. A large number of researchers have focused on analyzing the structure of students' argumentation occurring in the scientific inquiry context, using the Toulmin's model of argument. Since SSI dialogic argumentation often presents distinctive features (e.g. interdisciplinary, controversial, value-laden, etc.), Toulmin's model would not fit into the context. Therefore, we attempted to develop an analytical framework for SSI dialogic argumentation by addressing the concepts of 'discourse clusters' and 'discourse schemes.' Discourse clusters indicated a series of utterances created for a similar dialogical purpose in the SSI contexts. Discourse schemes denoted meaningful discourse units that well represented the features of SSI reasoning. In this study, we presented six types of discourse clusters and 19 discourse schemes. We applied the framework to the data of students' group discourse on SSIs (e.g. euthanasia, nuclear energy, etc.) in order to verify its validity and applicability. The results indicate that the framework well explained the overall flow, dynamics, and features of students' discourse on SSI.

• Annual Conference on Human and Language Technology
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• 1994.11a
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• pp.499-504
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• 1994

기존의 문서 시스템은 문서의 논리적인 정보와 문서의 외양에 관련된 처리정보들이 확연히 구분되지 않음으로써 서로 다른 시스템간의 문서 교환시 정보의 손실을 가져올 뿐 아니라, 문서의 저장방식에서도 순차 화일 구조를 갖기 때문에 문서의 논리적 요소에 대한 대화식 검색이 불가능하다. 이러한 단점을 극복하고자 문서의 논리적 구조 및 내용을 중심으로 작성 가능한 표준 메타 언어인 SGML이 제정되었으며, 본 연구에서는 SGML 문서를 인식하고 해석하기 위한 SGML파서와 문서의 논리적 구조를 반영하는 저장구조 및 이를 이용한 브라우저를 구현하였다.