• Journal of Convergence Society for SMB
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• v.6 no.1
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• pp.17-23
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• 2016

Recently, Internet services via various devices including smartphone have become available. Because of the development of ICT, numerous hacking incidents have occurred and most of those attacks turned out to be APT attacks. APT attack means an attack method by which a hacker continues to collect information to achieve his goal, and analyzes the weakness of the target and infects it with malicious code, and being hidden, leaks the data in time. In this paper, we examine the information collection method the APT attackers use to invade the target system in a short time using big data, and we suggest and evaluate the countermeasure to protect against the attack method using big data.

• Journal of Digital Convergence
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• v.15 no.9
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• pp.35-46
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• 2017

This study aim to figure out the limitation of existing ICT SMEs technology support programs conducted by Government Funded Research Institute. To investigate the limitations of SMEs programs, we conducted Focus Group Interview(FGI) with staff in charge of R&D department of beneficiaries(ICT SMEs). The results of FGI show that SMEs have troubles with the lack of R&D manpower, R&D infrastructure and non-R&D activities. Then, we conducted Delphi survey(derived from FGI) with related field experts to ask the problems and limitations of SMEs programs. The Results of Delphi show that SMEs programs has limitations with avoiding of SMEs support staff, lack of public R&D infrastructure sharing center, incompleteness of policies. Based on the results of FGI and Delphi, we suggest the several ways to improving SMEs programs.

• Therapeutic Science for Rehabilitation
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• v.10 no.3
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• pp.137-149
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• 2021

Objective : This study aimed to verify the effectiveness of ICT-Living Lab-based programs to promote the health of elderly residents in small and medium-sized cities, thus, providing basic data for solving the health and quality of life problems faced by modern society. Methods : The tow-month program included 14 elderly individuals visiting senior center located in W City, from October to November 2019. The program was organized by consulting four senior experts and one ICT expert. The program consisted of 10 min for advance assessment, 10 min for preparation activities, 30 min for main activities, and 10 min for finishing, and 60 min for eight sessions over two months, once a week. Results : EQ-5D increased from 0.76 to 0.84, compared to pre-assessment(p=.009^*). EQ-VAS scores increased from 36.43 to 65.71 (p=.001^*). MMSE-DS increased from 21.21 to 24.14 (p=.000^*). SGDS-K decreased from 3.36 to 3.21, but this was not statistically significant (p=.854). Conclusion : The ICT·Living Lab-based program could be used as a basic material for future research as one of the ways to improve health and quality of life by preventing and addressing the problems faced by the elderly in modern society.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.352-352
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• 2020

통합물관리 (IWRM; Integrated Water Resources Management)란 생태계의 지속가능성(sustainability)을 해치지 않으면서, 공평한 방법(equity)으로 경제·사회·복지를 극대화(efficiency) 할 수 있도록 물과 토지 및 관련 기타 자원들을 조화롭게 개발하고 처리하는 과정을 말한다. IWRM 패러다임은 전 세계적 및 국가별 물관리 상황에 따른 시대적 이슈에 따라 변천하고 있고 1992년 리우 정상회담 이후 물위기 극복을 위한 새로운 패러다임으로 정착, 물재해 심화에 따라 2000년대 물안보라는 국가 차원의 과제로 발전하였다. 이에 이미 전세계 국가의 68%이상이 도입중이며 모든 국가로 확산 중에 있다. 그러므로 본 연구에서는 향후 통합수자원관리 측면에서의 우즈베키스탄 내 업무와 환경을 분석하여 표준화된 수자원정보화 방향을 제시하고 통합물관리를 위한 통합물관리시스템을 개발하는 것을 목적으로 한다. 우즈베키스탄은 기본적으로 물관리 여건이 매우 불리한 물스트레스 국가로 분류되고 있다. 국가 내에서 필요로하는 대부분의 수자원이 양적으로 매우 부족하고, 강수량의 지역, 시기별 변동폭 역시 매우 크게 나타나고 있다. 또한 이용가능한 수자원을 작물재배가 가능한 시기에 농업용수로 80%이상을 취수하고 있어 심각한 물부족에 시달리고 있는 실정이다. 지정학적으로는 연강수량이 평균 400mm정도로 나타나고 있어 국내에서 생산되는 물 이외에는 국내를 통과하는 시르다리야, 아무다리야 강의 상류에 위치한 키르기즈스탄, 타지키스탄에서 생성된 물을 하천에서 취수하여 사용하고 있는 실정으로 제한된 수자원을 효율적, 합리적으로 이용하는 데 있어 관리기술의 개선이 필요하다. 수자원의 대부분은 수자원부에서 산하 관리조직을 통해 중앙에서 통제하에 관리하고 있으나 국가간, 지역별 용수배분, 갈등이 심하되고 있는 상태에 있으며 이러한 점을 해결하기 위한 상류-하류간 연계, 수량-수질간 연계, 지표수-지하수 연계 등을 위한 법적, 제도적 기반이 미흡한 상태이다. 이러한 우즈베키스탄 내 IWRM 도입의 필요성을 기반으로 통합물관리를 위한 시스템 구성요소를 도출하고 구축을 위해 고려해야 할 사항 및 발전방향을 본 연구를 통하여 제시하고자 한다.

• Journal of The Korean Association For Science Education
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• v.24 no.2
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• pp.193-201
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• 2004

The purpose of this study was to assess the effect of ICT on tenth grade students' understandings of and attitude toward reproduction. The subject of the study was 8 classes of 267 students. Four classes learned with help of lCT, but another four classes learned on the basis of a textbook. Understanding of reproduction and the attitude were assessed using a written test and a survey, respectively. The lCT was found to be effective to foster understanding of reproduction concepts and consciousness toward human reproduction. Discussions in the web enabled students get some feedbacks on their preconceptions from other students.

• Journal of the Korea Convergence Society
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• v.8 no.10
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• pp.295-304
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• 2017

The purpose of the study was to develop welfare technology classification frame according to welfare needs, function, and ICT technology and to explore current trends in Korean welfare technology application for older adults and people with disabilities. A systematic literature review and descriptive statistics were used for data analyses. Korean welfare technology services were categorized by a new welfare technology classification frame with five components for welfare needs and function and eight ICT technologies. Self-reliance and self-help emerged as the most frequent welfare needs and function. The use of ICT devices was frequently applied to welfare technology services. Our findings suggest that it is important to use a new welfare technology classification frame and to apply it to welfare technology in Korea. Further research is necessary to seek for future directions in Korean welfare technology.

• Korean Journal of Remote Sensing
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• v.39 no.5_1
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• pp.637-654
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• 2023

In recent years, the number of users has been increasing with the rapid development of earth observation satellites. In response, the Committee on Earth Observation Satellites (CEOS) has been striving to provide user-friendly satellite images by introducing the concept of Analysis Ready Data (ARD) and defining its requirements as CEOS ARD for Land (CARD4L). In ARD, a mask called an Unusable Data Mask (UDM), identifying unnecessary pixels for land analysis, should be provided with a satellite image. UDMs include clouds, cloud shadows, terrain shadows, etc. Terrain shadows are generated in mountainous terrain with large terrain relief, and these areas cause errors in analysis due to their low radiation intensity. previous research on terrain shadow detection focused on detecting terrain shadow pixels to correct terrain shadows. However, this should be replaced by the terrain correction method. Therefore, there is a need to expand the purpose of terrain shadow detection. In this study, to utilize CAS500-4 for forest and agriculture analysis, we extended the scope of the terrain shadow detection to shaded areas. This paper aims to analyze the potential for terrain shadow detection to make a terrain shadow mask for South and North Korea. To detect terrain shadows, we used a Hill-shade algorithm that utilizes the position of the sun and a surface's derivatives, such as slope and aspect. Using RapidEye images with a spatial resolution of 5 meters and Sentinel-2 images with a spatial resolution of 10 meters over the Korean Peninsula, the optimal threshold for shadow determination was confirmed by comparing them with the ground truth. The optimal threshold was used to perform terrain shadow detection, and the results were analyzed. As a qualitative result, it was confirmed that the shape was similar to the ground truth as a whole. In addition, it was confirmed that most of the F1 scores were between 0.8 and 0.94 for all images tested. Based on the results of this study, it was confirmed that automatic terrain shadow detection was well performed throughout the Korean Peninsula.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.84-87
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• 2016

본 연구의 목적은 창업자의 성별에 따라 투자에 미치는 영향이 달라지는지를 확인하고, 또한 이 과정에서 창업자의 사회적 자본이 조절효과로 작용하는지를 분석하기 위해 시도하였다. 본 연구의 가설은 다음과 같다. 첫째, 창업자의 성별은 창업투자에 영향을 미칠 것이다. 둘째, 창업자의 성별과 창업투자의 관계는 창업자의 사회적 자본에 의해 조절될 것이다. 본 연구의 목적을 실증적으로 검증하기 위해 ICT 분야의 동일한 사업계획서에 창업자의 성별 및 사회적 자본만을 다르게 표기하여 창업전문가 집단인 4개의 국책 창업대학원생 및 스타트업 지원경험이 있는 창업유관기관 직원을 대상으로 실험형식의 설문조사를 실시하여 160명의 설문결과를 취합하고, 위계적 회귀분석 연구방법을 이용하여 연구결과를 분석하려고 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.393-396
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• 2022

본 연구는 국방과학기술 분야의 특허 및 논문 실적을 이용하여 통계기반 기계학습 모델 4 종을 학습하고, 실제 분석 대상기관의 데이터 입력결과를 분석하여 실용성에 대한 한계점 분석을 목적으로 한다. 기존 연구에서는 특허분류코드를 기준으로 분류하여 특수 목적으로 활용하거나 세부 연구 범위 내 연구 주제탐색 및 특징연구 등 미시적인 관점에서의 상세연구 활용 목적인 반면, 본 연구는 거시적인 관점에서 연구의 전체적인 흐름과 경향성 파악을 목적으로 한다. 이에 ICT 기술 138 종의 특허 및 논문 30,965 건과 국방과학기술 192 종의 특허 및 논문 23,406 건을 학습데이터로 각 모델을 학습하였다. 비교한 통계기반 학습모델은 Support Vector Machines, Decision Tree, Naive Bayes, XGBoost 모델이다. 학습데이터에 대한 학습검증 단계에서는 최대 99.4%의 성능을 보였다. 다만, 실제 분석대상기관의 특허 및 논문 12,824 건으로 입력분석한 결과, 모델별 편향성 문제, 데이터 전처리 이슈, 다중클래스 및 다중레이블 문제를 확인, 도출한 문제에 대한 해결방안을 제시하고 추가 연구의 방향성을 제시한다.

• Information Systems Review
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• v.22 no.2
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• pp.167-199
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• 2020

The ICT-based curation as a series of experiences with the mobile exhibition-guide applications or guide programs in art galleries helps visitors fully immersed in the exhibition and allows them to have more informative and convenient guide experience at art galleries. This study aims to verify how the factors of ICT-based curation affects the commitment and satisfaction of visitors at art galleries, figure out whether the visitors' commitment has effects on their satisfaction, and then finally test the impact of their commitment and satisfaction on their revisit intention. In order to validate the cause-and-effect relationships between these factors, the ICT-based curation in this paper is categorized into five factors - gamification, quality of image/video information, quality of sound/text information, contextual offer, and instant connectivity. The main results of the study are as follows. First, only the gamification has significantly positive effects on the commitment of art gallery visitors, while other two factors - the instant connectivity, and the quality of sound/text information - have significantly positive effects on the satisfaction of visitors. Second, the commitment of visitors also has significantly positive effects on their satisfaction. Third, the commitment of the visitors don't have significantly positive relationship with their intention of revisit, but the satisfaction of the visitors have significantly positive relationship with their intention of revisit.