• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.223-226
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• 2017

소프트웨어 교육이 활성화됨에 따라 CT의 중요성이 증가하고 있지만, CT는 다양한 단어로 혼용되고 있다. 이와 같은 현황은 CT 연구에 어려움을 유발하고 있다. 따라서 본 연구에서는 CT 용어 사용의 표준화를 위하여 CT 관련 연구에서 사용하고 있는 CT의 용어를 분석하였다. 이러한 연구를 위하여 선행 연구를 통해 '컴퓨팅 사고(력)', 'computational thinking(CT)', '계산적 사고(력)', '알고리즘적 사고(력)', '컴퓨터적 사고(력)', '컴퓨터 과학적 사고(력)', '정보적 사고(력)', '정보 과학적 사고(력)'이라는 키워드를 추출하였다. 추출한 키워드를 기반으로 학술연구정보서비스에서 CT 관련 논문을 수집한 후 CT 관련 논문 중, 제목에 CT 관련 용어가 포함된 123편의 논문을 최종 연구 대상으로 선정하였다. 이와 같은 논문을 분석한 결과, CT 관련 연구는 2008년부터 지금까지 꾸준히 증가해 왔으며 특히 2014년과 2015년 사이에 큰 폭으로 증가한 것을 알 수 있었다. 또한 CT를 표현하는 여러 용어들이 혼재하는 기간을 거쳐 CT의 한글 용어에 대한 합의가 '컴퓨팅 사고력'으로 귀결되고 있는 것을 확인 할 수 있었다. 이를 출발점으로 연구주제, 연구방법, 연구대상 등을 중심으로 한 CT 관련 연구동향 연구가 추후 이루어져야 함을 제안한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.11
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• pp.2691-2696
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• 2014

SNOMED CT is a standard clinical terminology to provide a standardized way to record and manage clinical records for EMR or EHR. The structure of SNOMED CT is very complex because of huge expressive power and its internal design mechanism. Although there are some SNOMED CT browsers for browsing and searching SNOMED CT concepts, they are less effective because they do not consider such complexity of SNOMED CT. This paper depicts problems of current SNOMED CT browsers and analyze SNOMED CT dataset. Then, this paper analyze requirements of SNOMED CT browser which improves searching and selecting of appropriate clinical terms.

• Journal of The Korean Association of Information Education
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• v.20 no.6
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• pp.553-562
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• 2016

Although software education pursues developing learners' computational thinking skills, more studies are needed in terms of designing software education lessons to enhance CT skills and to measure the effects of the lessons. This study aims to investigate the effects of a course designed to enhance pre-service teachers' CT skills by using CT-based teaching materials. Through a literature review the study has selected the five core competencies of CT: algorithmic thinking, evaluation, problem decompositions, abstraction, and generalization. The participants of the study are 47 pre-service teachers who took the one-semester course in a national university of education. A survey was developed and conducted and qualitative analyses on the team projects were performed focusing on the core competencies of CT. The results revealed pre-service teachers' perceived degree of experiencing CT and their competencies represented in their projects. The present study provides important implications to future software education programs in terms of designing and implementing of software education.

• Journal of the Korean Society of Earth Science Education
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• v.10 no.2
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• pp.140-160
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• 2017

The purpose of this study was to develop computational thinking (CT) analysis tool that can be used to analyze CT practices; first, by defining what CT practices are, and then, by identifying which components of CT are reflected in STEAM classes. Exploring various kinds of CT practices, which can be identified while applying the proposed CT analysis tool for exemplary STEAM classes, is another goal of this study. Firstly, to answer the question of "What is CT in science education" and thereby to develop the proposed CT practice analysis tool, three types of published documents about CT definition as the main data in this study have been considered. In the first "analysis tool development" part of this study, the following five elements have been identified as the main components of CT analysis tool as follows; (1) connecting open problems with computing, (2) using tools or computers to develop computing artifact, (3) abstraction process, (4) analyzing and evaluating computing process and artifact, and (5) communicating and cooperating. Based on the understandings that there is a consistent flow among the five components due to their interactions, a flow chart of CT practice has also been developed. In the second part of this study, which is an implementation study, the proposed CT practice analysis tool has been applied in one exemplary STEAM program. To select the candidate STEAM program, four selection criteria have been identified. Then, the proposed CT practice analysis tool has been applied for the selected STEAM program to determine the degree of CT practice reflected in the program and furthermore, to suggest a way of improving the proposed CT analysis tool if it shows some weak points. Through the findings of this study, we suggest that the actual definition of computational thinking will be helpful to converge Technology and Engineering to STEAM education and a strong complement to reinforce STEAM education.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.64-76
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• 2021

Culture technology (CT) becomes important in the recent environment where digital technology drives content-based innovations. However, technological trends of CT have not been systematically discussed. Especially, the trends of CT should be analyzed from the national perspective, because CT has grown with the help of government-driven innovation. Therefore, this paper aims to analyze CT trends focusing on national research projects. We collected data on CT from the national science and technology information service (NTIS) database, analyzed the keyword co-occurrence network, and identified the patterns of technological innovation using a clustering analysis. As a result, we found that CT has contributed to the digital content and cultural media, and has been actively developed with the help of machine learning technique. Especially, due to the rise of Covid-19, the non-face-to-face online content is rapidly increasing. This study provides important clues for understanding, analyzing CT trends.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3848-3855
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• 2009

Many social and environmental changes emerged by the increasing of the number of the aged to entrance the aged society. This study explored the current supply status on Contents Technology R&D(research and development) of CT ministries and market policies(senior friendly industry) targeting to elderly consumers and the needs and demand of elderly generation to knowledge information technology. In, 2008, Ministries announced the sixth category of CT R&D's fundamental planning. The 'public culture service' to elderly and handicapped person is one of CT R&D category. This study investigated the information technology participation(internet participation rate, blog and internet cafe commitment) and contents technology to the elderly. The research indicated the desired needs of elderly consumers are creativity contents, emotional & experience and communication needs. These three factors of CT R&D to elderly consumers meets the needs non-game factors such as health, economic stability and information seeking in entertainment game.

• The Journal of Korean Association of Computer Education
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• v.18 no.5
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• pp.25-34
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• 2015

The purpose of this research is to suggest the method of code analysis for evaluating learners' projects in computational thinking(CT) education. Recently, block programming tools are applied to K-12 SW education, this study considered the assessment method for evaluating students' levels and learning about CT concepts through analyzing codes of the Scratch projects that students created. As a result from the analysis of 45 projects of novices, it showed the bad coding patterns of novices and verified that it is possible to evaluate students' learning about CT concepts through the analysis of their codes. The higher learner's level, the greater scores of logical thinking, synchronization, flow control, and data representation. This result is able to apply to student assessment of CT concepts in K-12 SW education.

• Electronics and Telecommunications Trends
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• v.9 no.4
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• pp.75-82
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• 1994

언제, 어디서나, 누구와도' 통신이 가능하게 한다는 궁극적인 목표를 가지고 통신의 개인화가 연구되고 있으며, 통신 선진국에서는 PCS를 실현하기 위한 PSTN(Public Switching Telephone Network) 접근 방법의 초기 단계로 CT2 (Cordless Telephone 2)의 개발과 시험망 운영을 하고 있거나 이미 서비스를 상용화하고 있다. CT2는 1989년 영국에서 제안되었고 1992년 유럽 표준 (I-ETS 300-131)으로 채택된 후 유럽 각국과 홍콩이나 싱가포르 같은 도시 국가에서 활성화 되어 많은 가입자들이 이용하고 있다. CT2 이용자는 도로, 지하철 혹은 공공 장소에서는 PSTN에 연결된 CT2 기지국에 접속되어 발신 위주의 휴대 전화 서비스를 받을 수 있으며, 가정에서는 우리가 현재 사용하고 있는 무선 전화기와 동일하게 사용할 수 있는 소출력 휴대 전화 서비스로 단말기의 이동성이 어느 정도 실현된 서비스이다. 국내 CT2 사업자는 1993년 12월 체신부로 부터 시범 사업 계획의 승인을 얻어 주파수 대역 910-914 MHz에서 1995년 서울 지역에 서비스 상용화를 목표로 여의도에 시험망 운용과 함께 연구되고 있다. 본 고에서는 CT2 서비스의 일반적인 개요와 특성 그리고 제외국의 CT2 동향을 고찰해봄으로써, CT2는 어떤 서비스이며 CT2의 기술 기준 마련과 무선 인터페이스 측정 및 분석 방법을 연구하는 데 기초로 삼고자 한다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2007.04a
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• pp.63-74
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• 2007

간은 인체의 생명을 유지하고 성장할 수 있도록 하는 영양섭취와 매우 밀접한 관계를 가진 중요한 장기이다. 이러한 간의 중요성에도 불구하고 현재 우리나라의 간암 발병률이 세계에서 가장 높은 수치를 기록하고 있으며 이에 따라 간암을 조기 진단하고 예방할 수 있는 방법의 중요성이 확대되고 있다. 따라서 본 논문에서는 영상 의학적 검사 방법 중 하나인 CT 촬영으로 획득된 조영 증강 CT 영상에서 간 영역과 간 종양 영역을 정확히 검출하고 간 종양의 악성도를 판별할 수 있는 방법을 제안한다. 흉부로부터 5mm 간격으로 약 $40\;{\sim}\;50$장 정도로 촬영한 조영 증강 CT 영상에서 명암도와 명암의 분포도를 이용한 양자화 기법과 장기들의 위치 및 형태학적 특징정보, 그리고 흉부와 복부 양방향으로 인접한 CT 영상들의 정보를 분석하여 간 영역을 검출한다. 간 종양 영역은 과혈관성 종양의 특징을 분석하고 간 영역의 검출 방법에 적용하여 추출한다. 추출된 간 종양 영역은 퍼지 기반 SOM 알고리즘을 제안하여 간 종양의 악성도를 분석하는데 적용한다. 제안된 퍼지 기반 SOM 알고리즘은 SOM의 이웃 반경을 동적으로 조정하는데 퍼지 제어 기법을 적용하여 기존의 SOM 알고리즘보다 종양의 악성 정도를 분류하는 정확성을 개선하였다. 제시된 간 영역과 간 종양 검출 및 분석 방법의 결과와 전문의가 진단한 결과를 비교 분석한 결과, 기존의 간 영역 및 간 종양 영역 검출 방법보다 정확성이 향상된 것을 확인할 수 있었다.

• Journal of the Korean Society of Radiology
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• v.84 no.6
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• pp.1290-1308
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• 2023

Purpose To compare the diagnostic performance of rectal CT with that of high-resolution rectal MRI and histopathology in assessing rectal cancer. Materials and Methods Sixty-seven patients with rectal cancer who underwent rectal CT with rectal distension using sonographic gel and high-resolution MRI were enrolled in this study. The distance from the anal verge/anorectal junction, distance to the mesorectal fascia (MRF), extramural depth (EMD), extramesorectal lymph node (LN) involvement, extramural venous invasion (EMVI), and T/N stages in rectal CT/MRI were analyzed by two gastrointestinal radiologists. The CT findings of 20 patients who underwent radical surgery without concurrent chemoradiotherapy were compared using histopathology. Interclass correlations and kappa statistics were used. Results The distance from the anal verge/anorectal junction showed an excellent intraclass correlation between CT and MRI for both reviewers. For EMD, the distance to the MRF, presence of LNs, extramesorectal LN metastasis, EMVI, T stage, and intermodality kappa or weighted kappa values between CT and MRI showed excellent agreement. Among the 20 patients who underwent radical surgery, T staging, circumferential resection margin involvement, EMVI, and LN metastasis on rectal CT showed acceptable concordance rates with histopathology. Conclusion Dedicated rectal CT may be on par with rectal MRI in providing critical information to patients with rectal cancer.