• 디지털산업정보학회논문지
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• 제5권1호
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• pp.1-8
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• 2009

This paper is about the implementation of MyTalk, an instant messaging system, which supports human-human and human-thing communication. It consists of agents which are representatives of communication entities, and agent windows for user interfaces. Users can communicate with their buddies, and monitor and control remote "things" and devices with MyTalk. We also introduce the concept of agent window, which provides the most suitable GUIs (text, form, graph etc) for communication. Currently, MyTalk supports ordering goods, controlling devices like printers, monitoring sensors, managing applications, and real-time talk. Furthermore, we can extend it to application platform for remote monitoring, remote controlling, and real time cooperation.

• 한국정보통신학회논문지
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• 제20권4호
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• pp.777-785
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• 2016

IM(Instant Messenger)의 채팅메시지는 이용자의 생활패턴, 지리적 위치, 심리 상태, 범죄 사실에 대한 흔적들이 존재하여 포렌식 분석이 필요하다. 하지만, KakaoTalk의 포렌식 분석은 주고받은 상세메시지에 대한 분석이 부족한 실정이다. 이에 본 논문은 우선 일반적인 IM 채팅메시지의 분석방법론을 정리 분석하였고, KakaoTalk의 상세 채팅메시지의 테이블 구조를 분석하여 메시지를 재구성하였고, 채팅메시지를 복원하였다. 그 결과 분석한 정보를 활용하면 Forensic Tool의 기본 플랫폼이 된다. 추가적으로 분석한 KakaoTalk과 WhatsApp을 비교 분석하여 비슷한 IM App이지만, 다른 흔적의 차이를 논의하였다.

• 디지털융복합연구
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• 제17권6호
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• pp.327-333
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• 2019

본 연구는 국민 채팅 앱으로 일컬을 수 있는 카카오톡을 부모들이 안심하고 초등학교 자녀들이 쓰게 할 수 있도록, 초등학생 자녀들도 안심하고 사용할 수 있도록, 양 대상자 간의 사용자 경험의 차이점을 조사한 후 카카오톡의 개선 영역을 제안하는 데 그 목적이 있다. 연구방법으로는 문헌연구를 통해 한국의 스마트폰 보급률을 조사하고, 키즈폰 출시와 한계점, 카카오톡의 사회적 문제에 대해 고찰하였으며, 카카오톡을 사용하는 부모 8명과 해당 자녀 8명을 대상으로 피터 모빌의 허니콤 모델을 기반으로 한 설문조사, 인터뷰를 진행하였다. 그 결과, 각 대상자의 카카오톡의 구체적인 사용 실태와 관점, 니즈를 파악하였고, 부모들은 신뢰성 부분에서 카카오톡을 신뢰하지 못하는 것을 알 수 있었다. 본 연구를 바탕으로 후속 연구를 통해 카카오톡 실제 개선까지 이루어져 부모와 자녀가 안심하고 쓸 수 있는 카카오톡이 되기를 기대한다.

• 천문학회보
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• 제43권1호
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• pp.47.2-47.2
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• 2018

In this talk, we will review extragalactic science cases with NISS and SPHEREx. With its capability to perform a low resolution spectroscopy over a wide area, NISS and SPHEREx can provide valuable information about the evolution of spectral shapes of galaxies in different environments over cosmic history. This talk will focus on the cases for the studies that are closely related to the galaxy evolution and formation.

• Asia Marketing Journal
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• 제16권1호
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• pp.133-148
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• 2014

People enthusiastic about human brands eagerly engage in fan communities to share their common interests with others. Although sharing one's enthusiasm towards the same celebrities can give thempositive senses of we-ness (in-group identity, togetherness, camaraderie) and belongingness, negative sides also exist such as schadenfreude and trash talk. Even though the studies addressing the negative sides of fan community are gaining significance, no prior studies formally examined the negative consequences of engaging in a fan community and their effect on one's well-being. Therefore, this current study aims to investigate how engaging in fan community negatively affects members' psychological well-being through schadenfreude and trash talk. Structural equation modeling analysis revealed that engaging highly in a fan community leads members to feel malicious pleasure at rivals' misfortunes and share negative opinions of rival human brands and fan communities. These negative consequences of fan community engagement ultimately lead to a lower level of psychological wellbeing, especially in the area of personal growth whereas fan community engagement has a direct positive effect on personal growth. By showing the negative influences of engaging in fan communities on members' well-being through schadenfreude and trash talk, the results of this study are expected to add depth to the existing literature.

• 한국논리학회:학술대회논문집
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• 한국논리학회 2008년도 하계학술 발표회
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• pp.73-92
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• 2008

Describing a physical system in idealized terms involves making literally false claims about the system. Given this, it is puzzling that justified beliefs about physical systems can be formed by starting with idealized descriptions and then performing mathematical calculations. I argue that this puzzling aspect of idealizations cannot be easily removed by introducing talk of approximations. I go on to develop an account of how this curious feature of idealizations is to be understood. My account requires us to reassess what precisely we take the laws of physics to be saying, and also has consequences concerning the kind of evidence we can have for thinking that mathematics is the 'language of nature'. Finally, some critical comparisons are made with the so-called model-based account of scientific laws developed by Cartwright and Giere.

• 천문학회보
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• 제46권2호
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• pp.62.1-62.1
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• 2021

Interstellar objects originate from other stellar systems. Thus, they contain information about the stellar systems that cannot be directly explored; the information includes the formation and evolution of the stellar systems and the possibility of life. The examples observed so far are 1l/Oumuamua in 2017 and 2l/Borisov in 2019. In this talk, we present the possibility of detecting interstellar objects using the Heliospheric Imagers designed for space weather research and forecasting by observing solar wind in interplanetary space between the Sun and Earth. Because interstellar objects are unpredictable events, the detection requires observations with wide coverage in spatial and long duration in temporal. The near-real time data availability is essential for follow-up observations to study their detailed properties and future rendezvous missions. Heliospheric Imagers provide day-side observations, inaccessible by traditional astronomical observations. This will dramatically increase the temporal and spatial coverage of observations and also the probability of detecting interstellar objects visiting our solar system, together with traditional astronomical observations. We demonstrate that this is the case. We have used data taken from Solar TErrestrial RElation Observatory (STEREO)/Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) HI-1. HI-1 is off-pointed from the Sun direction by 14 degrees with 20 degrees of the field of view. Using images observed from 2007 to 2019, we have found a total of 223 small objects other than stars, galaxies, or planets, indicative of the potential capability to detect interstellar objects. The same method can be applied to the currently operating missions such as the Parker Solar Probe and Solar Orbiter and also future L5 and L4 missions. Since the data can be analyzed in near-real time due to the space weather purposes, more detailed properties can be analyzed by follow-up observations in ground and space, and also future rendezvous missions. We discuss future possible rendezvous missions at the end of this talk.

• 한국게임학회 논문지
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• 제11권2호
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• pp.131-140
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• 2011

프로그램 개발에 있어 디버깅은 매우 중요한 요소이다. 개발 과정에서 디버깅을 통해 버그를 대부분 잡을 수 있지만 제품이 출시된 이후에도 프로그램 버그를 잡을 수 있는 시스템이 필요하다. 이를 위해 포스트 모템 디버깅에 대해 살펴보고 프로세스 덤프에 대해 논의한다. 또한 프로그램이 다운되었는데 프로세스 덤프가 생성되지 않는 상황에 대해 원인을 분석해 보도록 한다. 아울러 검증된 예외 핸들러라 하더라도 프로세스 덤프를 남기지 못하는 상황을 이해하고 이런 상황을 타개하기 위해 EHModule(Exception Handler Module)를 구현한다. 구현한 EHModule의 핵심 루틴을 설명하고 해당 모듈의 특징 및 효용성에 대해 언급한다.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제9권3호
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• pp.275-284
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• 2005

Tessellations are the pattern of iterations of geometric symmetry and translation. We can find them in the works of Escher who is the famous Dutch artist, and the American Indean life. Also, we can find the beauty of tessellations in the Korean traditional house door, Buddist temple architecture, palace's fence, etc. In the article, the figures of patterns we present are bird, fish, cat, pig, elephant, penguin, child and horse riding man, including Escher's, which are constructed using the computer geometric program, GSP (Geometer's Sketchpad). We want to talk about girl's disposition toward mathematics related to the figures. If they are supported by this kind of interesting figures constructed by their own hands, students will have more interest in learning geometric figures.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제9권3호
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• pp.285-294
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• 2005

The author has been teaching with an instructional module consisting of many mathematical concepts, based on designs formed by personal names or words to arouse students' interesting in learning mathematics. This module has been growing since it was first used as a supplementary lesson for calculus students. Now it consists of concepts that connect with mathematical topics such as number sense, algebraic thinking, geometry, and statistical reasoning, as well as other subjects such as art and quilt design. With its content we can provide our students the basic mathematical knowledge needed for further study in their own fields. In this article, we will demonstrate the latest development of this instructional module, which makes connections between mathematical knowledge and the design of personal quilt patterns. We will exhibit a 'Quilt of Nations' which consists of the designed quilt blocks of different countries, such as USA, Japan, Taiwan, Korea and others, as well as a quilt design using the abbreviation of this seminar. Then we will talk about how the connections are built, and how to design these mathematically rich, uniquely created, beautifully designed, and personalized quilt block patterns.