균등한 웹 문서 샘플링을 이용한 웹 검색 서비스들의 커버리지 측정

장성수,김광현,이준호,Jang, Sung-Soo,Kim, Kwang-Hyun,Lee, Joon-Ho 한국정보처리학회 2008 정보처리학회논문지D Vol.15 No.3

인터넷에는 유익한 정보들이 포함된 웹 문서들이 공개되고 있으며, 이러한 웹 문서들은 웹 검색 서비스를 통하여 접근할 수 있다. 따라서 웹 검색 서비스들은 보다 많은 웹 문서들을 수집하기 위하여 노력하고 있으나, 이들은 수집된 웹 문서들의 커버리지를 파악하는데 많은 어려움을 겪고 있다. 따라서 본 논문에서는 기존의 커버리지 측정 방법들을 분석하고, 효과적인 커버리지 측정 방법을 제안한다. 즉, 인터넷에서 웹 문서를 균등하게 샘플링하고, 이 웹 문서들이 웹 검색 서비스에 색인되어 있는지를 조사함으로써 웹 검색 서비스들의 절대 및 상대 커버리지를 측정한다. 그리고 본 논문에서는 제안한 방법으로 국내 웹 검색 서비스들의 커버리지를 측정하여 비교하였으며, 그 결과 구글, 네이버, 엠파스 순으로 절대 및 상대 커버리지가 높게 나타났다. 이러한 본 논문의 결과는 웹 검색 서비스들의 커버리지를 측정하는데 도움이 될 것으로 기대된다. Web documents with useful information are widely available on the internet and they are accessible with web search service. For this reason, web search services study better ways to collect more web documents, but have a difficulty figuring out the coverage of these web pages. This paper is intended to find ways to evaluate the current coverage assessment methods and suggest more effective coverage assessment technique that is, sampling internet web documents equally, monitoring how they are classified on web search services, in an attempt to assess both absolute and relative coverage of the web search engines. The paper also presents the comparison among Korean web search services using the suggested methods.the absolute and relative coverage was highest in Google followed by Naver and Empas. The result is expected to help estimating coverage of web search services.

다목적실용위성 2호기의 전력용량 및 태양전지 어레이 초기 설계

장성수(Sung-Soo Jang),장진백(Jin-Baek Jang),이상곤(Sang-Kon Lee),심은섭(Eun-Sup Sim) 한국항공우주연구원 2002 항공우주기술 Vol.1 No.1

다목적실용위성 2호기의 전력용량 예비설계

장성수(Sung-Soo Jang),이상곤(Sang-Kon Lee),장진백(Jin-Baek Jang),박성우(Sung-Woo Park),심은섭(Eun-Sup Sim) 한국항공우주연구원 2002 항공우주기술 Vol.1 No.2

[특집]우리와 도시 : 미래와 과제

장성수(Jang Sung-soo) 대한건축학회 2005 建築 Vol.49 No.8

Interactional Effects of Feedback Type and Target Structure on Accuracy in L2 Writing

장성수(Sung-Soo Jang) 팬코리아영어교육학회(구 영남영어교육학회) 2020 영어교육연구 Vol.32 No.4

This study examined whether the efficacy of written corrective feedback (CF) on grammatical accuracy of L2 learners’ writing is contingent upon interaction between its type and complexity of its target structure. Written CF types in focus were direct CF and indirect CF. The English articles and the hypothetical conditional were taken as relatively less and more complex structure respectively. One hundred fifty-seven Korean university learners of English formed six groups. Three groups assigned for each target structure comprised one control group and two treatment groups that received direct CF or indirect CF. The participants performed dictogloss on four occasions and writing from the first, the third, and the fourth occasions constituted pretest, immediate posttest, and delayed posttest respectively. The results showed that there were interactional effects. While direct CF improved learners’ accuracy of both target structures, indirect CF worked favorably only for the hypothetical conditional. Improved accuracy through written CF was retained over time for the articles but such endurance did not emerge for the hypothetical conditional. (167 words)

제주지역 관광산업의 인적자원 양성에 관한 연구

장성수(Jang Sung Soo),김종기(Kim Jong ki) 제주대학교 관광과경영경제연구소 2015 産經論集 Vol.34 No.-

애너글리프를 활용한 지형 학습 자료가 학습에 미치는 효과

장성수 ( Sung Soo Jang ),임정훈 ( Jung-hoon Leem ) 인천대학교 사회과학연구원 2017 사회과학연구 Vol.10 No.1

이 연구는 효과적인 지형 학습을 위한 지형도의 보조자료로 3차원 입체 기술 중 하나인 애너글리프 방식을 활용한 등고선 학습 자료가 3차원적 위성사진이나 전통적인 지형 사진에 비해 학습자들의 학업 성취도와 학습 만족도 향상에 긍정적인 영향을 끼치는지를 탐색하는 것을 목적으로 하였다. 이 연구의 독립변인은 애너글리프 등고선이고 종속변인은 학업 성취도와 학습 만족도이다. 이 연구의 실험을 통해 분석된 연구결과를 요약하면 다음과 같다. 첫째, 지형도를 이용하는 지형 학습에서 애너글리프 지형 자료, 3차원적 위성사진 지형 자료, 지형사진 자료로 학습한 집단 간에는 학업 성취도에서 통계적으로 유의미한 차이가 있는 것으로 나타났다. 애너글리프 지형 자료로 학습한 집단의 학업성취도는 3차원적 위성사진 지형자료로 학습한 집단과 지형사진 자료로 학습한 집단의 학업 성취도보다 높게 나타났으며, 특히 등고선 지도를 해석하는 도해력 향상에 도움을 주는 것으로 나타났다. 둘째, 지형도를 이용하는 지형 학습에서 애너글리프 지형 자료, 3차원적 위성사진 지형 자료, 지형사진 자료로 학습한 집단 간에는 학습 만족도에서 통계적으로 유의미한 차이가 있는 것으로 나타났다. 애너글리프 지형 자료로 학습한 집단의 학습 만족도는 3차원적 위성사진 지형 자료로 학습한 집단과 지형사진 자료로 학습한 집단보다 높게 나타났으며, 3차원적 위성사진 자료로 학습한 집단의 학습 만족도는 지형사진 자료로 학습한 집단보다 높게 나타났다 The purpose of this study is to investigate whether contour learning material using anaglyph, one of 3D technologies, as support material of topographic map for effective geomorphology learning has a positive impact on academic achievement and learning satisfaction of learners in comparison to 3D satellite picture or traditional geomorphology picture. Independent variable of this study is anaglyph contour, and dependent variables are academic achievement and learning satisfaction. The results of research work analyzed through the experiment of this study are summarized as follows. First, Academic achievement of the group with anaglyph geomorphology material is higher than academic achievement of the group with 3D satellite picture geomorphology material and the group with geomorphology picture material, and especially, helps the improvement of ability to analyze contour map. Second, Learning satisfaction of the group with anaglyph geomorphology material is higher than learning satisfaction of the group with 3D satellite picture geomorphology material and the group with geomorphology picture material, and learning satisfaction of the group with 3D geomorphology material is higher than learning satisfaction of the group with geomorphology picture material.

Effects of Writing Anxiety and Grammatical Complexity on Raising L2 Written Accuracy through Corrective Feedback

Sung-Soo Jang(장성수) 언어과학회 2020 언어과학연구 Vol.0 No.95

The study examined whether second language (L2) learners’ writing anxiety and complexity of target structure, separately and interactionally, influence the effect of the teacher’s written corrective feedback (CF) on L2 written accuracy. One hundred forty-seven EFL learners formed eight groups distinguished by anxiety level (high and low), target structure (articles and hypothetical conditional as less and more complex), and CF reception (whether to receive CF). They performed four writing tasks and their first, third, and fourth writings constituted a pretest, immediate posttest, and delayed posttest, respectively. The results suggested that the two factors had interactional as well as separate effects. For articles, written CF had positive short-term effects regardless of learners’ anxiety level but the effects were sustained over time only for low anxiety learners. For hypothetical conditional, written CF had greater short-term benefits on low anxiety learners, but its long-term benefits were equal across anxiety levels.

Acquisition of English Grammatical Structure through Native Speaker Initiated Negotiation

Sung-Soo Jang(장성수) 한국외국어교육학회 2006 Foreign languages education Vol.13 No.2

  Drawing upon Schmidt’s (1990, 1993, 1995) claim that attention to form is necessary for acquisition, this study examines how NS-initiated negotiation draws attention to and facilitates acquisition effectively. The study compares two types of negotiation indicators (i.e., clarification requests and recasts) in terms of their effects on attention and acquisition of English question forms in connection with NNSs’ proficiency level. Data from an experiment where 31 Korean college NNSs engaged in information-gap tasks with NSs were analyzed. Results revealed that clarification requests were more effective in drawing attention while recasts were more beneficial in acquisition. This is ascribed to different characteristics of the indicator types and shows that the provision of correctly reformulated form is a key condition for enhancing negotiation’s effects. It was also found that clarification requests’ effects were not related to NNSs’ proficiency level while recasts induced more attention with high level NNSs and facilitated acquisition better with low level ones. It is suggested that indicator type and NNSs’ level be considered in utilizing NS-initiated negotiation as an effective acquisition device. This study implies that the workings of NS-initiated negotiation may be constrained by various factors connected with both learners and interaction they are involved in.

다목적실용위성 2호기의 태양전지 어레이 설계

장성수(Sung-Soo Jang),이주훈(Ju-Hun Rhee),김성훈(Sung-Hoon Kim),장진백(Jin-Baek Jang),박성우(Sung-Woo Park),박희성(Hee-Sung Park) 한국조명·전기설비학회 2004 한국조명·전기설비학회 학술대회논문집 Vol.2004 No.11월

본 논문은 다목적실용위성 2호기의 개발에 사용한 태양전지 어레이의 설계결과를 요약하였다. 최적의 태양전지 어레이의 개발을 위하여 고효율의 갈륨-아세나이드 태양전지를 사용하였다. 태양전지를 장착하기 위한 패널은 알루미늄 허니컴이 적용되는 샌드위치 구조에 섬유강화 복합재료를 면재로 사용하였다. 다목적실용위성 2호기의 임무말기 태양전지 어레이는 최소 1,073 watts 이상의 전력을 위성부하와 탑재체에 충분히 공급할 수 있도록 개발하고 있다.