• 정보보호학회논문지
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• 제14권4호
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• pp.111-121
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• 2004

인터넷의 급속한 발달과 더불어 네트워크 환경에서의 침입은 빠르게 증가하고 있으며, 그 피해 또한 급격히 증가하고 있다. 최근의 인터넷 공격은 특정 호스트나 네트워크에 대한 피해를 초래할 뿐만 아니라, 네트워크 전반의 성능저하를 유발한다. 기존의 침입 탐지 시스템은 각 지역망 및 특정한 대상 시스템을 보호하기 위한 솔루션들로, 기간망 수준의 실시간 공격 탐지에 적용하기 힘든 문제점을 가지고 있다. 본 논문에서는 네트워크 수준의 실시간 공격탐지를 위하여 각 포트별 트래픽을 대상으로 지수평활법을 적용하는 광대역 네트워크 침입 탐지 기법 제안하였다. 8일간의 기간망의 트래픽 데이터를 대상으로 한 실험에서, 제안한 기법은 공격으로 추정되는 급격한 트래픽의 증가를 적절히 탐지함을 보여주었다.

• Journal of Multimedia Information System
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• 제9권1호
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• pp.11-20
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• 2022

In this paper, we have recently created self-driving cars and self-parking systems in human-friendly cars that can provide high safety and high convenience functions by recognizing the internal and external situations of automobiles in real time by incorporating next-generation electronics, information communication, and function control technologies. And with the development of connected cars, the ITS (Intelligent Transportation Systems) market is expected to grow rapidly. Intelligent Transportation System (ITS) is an intelligent transportation system that incorporates technologies such as electronics, information, communication, and control into the transportation system, and aims to implement a next-generation transportation system suitable for the information society. By combining the technologies of connected cars and Internet of Things with software features and operating systems, future cars will serve as a service platform to connect the surrounding infrastructure on their own. This study creates a research methodology based on the Enhanced Security Model in Self-Driving Cars model. As for the types of attacks, Availability Attack, Man in the Middle Attack, Imperial Password Use, and Use Inclusive Access Control attack defense methodology are used. Along with the commercialization of 5G, various service models using advanced technologies such as autonomous vehicles, traffic information sharing systems using IoT, and AI-based mobility services are also appearing, and the growth of smart transportation is accelerating. Therefore, research was conducted to defend against hacking based on vulnerabilities of smart cars based on artificial intelligence blockchain.

• Child Health Nursing Research
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• 제28권2호
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• pp.112-123
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• 2022

Purpose: This study aimed to develop and evaluate a mobile application focusing on developmental support care for infants born prematurely. Methods: An application was developed using the analysis, design, development, implementation, and evaluation model. In the analysis phase, previous research was evaluated through big data text-mining and a literature review. In the design phase, the preliminary content of the application was designed, and the content validity and comprehension were verified. A hybrid application was developed and used by eight experts and ten users, who evaluated the layout of the mobile application and their satisfaction with it. Results: The content of the designed application comprised a diary, customized information, developmental play, and community. The mean scores for layout were 3.73±0.47 and 3.43±0.68 out of 4 points among the experts and users, respectively. Users' mean satisfaction score was 3.70±0.70 out of 5 points. Conclusion: The information provided by the mobile application was evaluated as consistent and systematic. The application was also found to be satisfactory by infants' parents. The mobile application developed through this study is expected to be effective in supporting the development of children born prematurely.

• 농업과학연구
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• 제49권4호
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• pp.919-926
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• 2022

Fertigation, which has been introduced in agricultural fields since 1990, has been widely practiced in upland fields as well as in plastic film houses as part of the crop production system. In accordance with demands in the agricultural sector, a huge number of scientific studies on fertigation have been conducted worldwide. Moreover, with a combination of advanced technologies such as big-data, machine learning, etc., fertigation is positioned as an indispensable tool to achieve sustainable crop production and to enhance nutrient and water use efficiency. In this review, we focused on providing valuable information in terms of crop production and nutrient/water use efficiency. A variety of fertigation studies have described that enhancement of crop production did not differ relative to conventional method or slightly increased. In contrast, fertigation significantly improved nutrient/water use efficiency, with a reduction in use ranging from 20 to 50%. Water-soluble organic resources such as livestock manure and agricultural byproducts also have been identified as useful resources like chemical fertilizers. Furthermore, the initial irrigation point was generally recommended in a range of -10 - -40 kPa, although the point differed according to the crop and crop growth stage. From this review, we suggest that fertigation, which is closely integrated with advanced technology, could be a leading technology to attain not only food security but also carbon neutrality via improvement of nutrient/water use efficiency.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.613-617
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• 2021

서비스 산업의 성장과 함께 감정노동자의 스트레스가 사회적 문제로 인식되어 2018년 감정노동자 보호법이 시행되었다. 그러나 실질적인 감정노동자 보호 시스템의 부족으로 스트레스 관리를 위한 디지털 시스템이 필요한 시점이다. 본 논문에서는 대표적인 감정노동자인 고객 상담사를 위한 딥러닝 기반 스트레스 감지 시스템을 제안한다. 시스템은 실시간 얼굴검출 모듈, 한국인 감정 이미지 중심의 이미지 빅데이터를 딥러닝한 감정분류 FER 모듈, 마지막으로 스트레스 수치만을 시각화하는 모니터링 모듈로 구성된다. 이 시스템을 통하여 감정노동자의 스트레스 모니터링과 정신질환 예방을 목표로 설계하였다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.440-444
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• 2015

As domestic construction investment has been gradually reduced, expanding overseas construction is one of the most important issues for Korean construction companies. Among these issues, strategies for overseas CM services have widely been discussed, because the CM services have features of high growth potential and value-added area when compared with other construction sectors. Therefore, recent efforts focus on further development in advanced CM capabilities and expansion to overseas market. However, there has been lack of quantitative research to investigate current status and future direction of CM industry. In this sense, this research investigated what CM has achieved for the past 17years (between 1997 and 2013) and what CM should accomplish for future strategies. The purpose of this research is to statistically analyze total of 2,983 CM service contracts over the past 17 years published in KISCON (Knowledge Information System of Construction Industry) in order to examine current status of CM industry in terms of market type, contract size, commodity type, and owner's type. Based on this research, it is expected to suggest for future strategies and development directions from the CM industry perspective that could provide quantitative analyses, improve current CM statistics systems and strengthen the competitiveness in international CM market.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2023년도 춘계학술발표대회
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• pp.748-750
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• 2023

Facial expression recognition technology's rapid growth and development have garnered significant attention in recent years. This technology holds immense potential for various applications, making it crucial to stay up-to-date with the latest trends and advancements. Simultaneously, it is essential to identify and address the challenges that impede the technology's progress. Motivated by these factors, this study aims to understand the latest trends, future directions, and challenges in facial expression recognition technology by utilizing text mining to analyze papers published between 2020 and 2023. Our research focuses on discerning which aspects of these papers provide valuable insights into the field's recent developments and issues. By doing so, we aim to present the information in an accessible and engaging manner for readers, enabling them to understand the current state and future potential of facial expression recognition technology. Ultimately, our study seeks to contribute to the ongoing dialogue and facilitate further advancements in this rapidly evolving field.

• 한국융합학회논문지
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• 제7권4호
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• pp.9-17
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• 2016

본 연구는 한국과 중국 신용카드 시장의 사용현황을 분석하고, 신용카드 시장에서의 경제활동 추이도를 미래측정 알고리즘개발을 통해 측정하고자 하였다. 연구 결과 한국에서는 개인 소득증가와 신용카드 이용액 간에는 유의적인 상관관계가 없는 것으로 분석되었으며, 1인당 카드 보유수량과 신용카드 이용액 사이에는 상관관계가 있는 것으로 밝혀졌다. 중국에서는 개인의 소득증가가 신용카드 이용액에 영향을 미치는 것으로 분석되었고, 1인당 카드 보유수량과 신용카드 이용금액 사이에는 유의한 상관관계가 있음을 발견하였다. 또한, 추이도 관찰을 통해 외부환경에 제약이 없는 조건하에서 향후 5년간 중국의 신용카드 시장은 점진적으로 성장하며, 증가율 또한 점진적으로 증가할 것으로 예측할 수 있었다.

• 한국항만경제학회지
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• 제25권3호
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• pp.361-384
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• 2009

본 논문은 광양항을 사례로 수송수요와 항만환경의 실태를 분석하고, 환경친화적인 항만관리정책의 방향을 항만운영과 계획 측면에서 강구하는 데 있다. 중요한 논문내용은 녹색성장과 환경친화적 항만의 개요, 광양항 수송 환경실태의 분석, 환경친화적 광양항 관리정책의 방향 등으로 구성되어 있다. 연구결과, 광양항을 환경친화적인 녹색항만으로 육성하기 위해서는 항만운영 계획 측면에서 합리적인 항만관리정책의 방향이 정립되어야 한다. 항만운영의 측면에서 환경 친화적인 정책방향은 환경친화적 항만물류수송체계의 전환, 항만컨테이너 운영부두의 에너지 절감, 환경친화적 항만운영기술의 적용 등을 들 수 있다. 항만계획의 입장에서 환경친화적 항만정책의 방향으로는 환경친화적 항만친수공간의 조성, 해양폐기물의 환경친화적 처리와 항만환경계획의 수립 시행 등이 포함된다. 본 연구는 항만과 환경의 상호간 영향에 대한 계량분석, 환경친화적 항만정책효과의 분석 등에 한계점을 가지고있다. 향후 연구에서는 계획과 운영 측면에서 환경친화적 항만정책의 영향평가방법에 대한 연구가 필요하다.

• 시스템엔지니어링학술지
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• 제18권2호
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• pp.140-148
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• 2022

Hydrogen is expected to be widely applied in most sectors within the current energy system, such as transportation and logistics, and is expected to be economically and technologically utilized as a power source to achieve vehiclebon emission reduction. In particular, the construction of hydrogen charging station infrastructure will not only support the distribution of hydrogen electric vehicles, but also play an important role in building a hydrogen logistics system. Therefore, This paper suggest additional charging infrastructure areas in Seoul with a focus on supply according to the annual average growth rate (CAGR), centering on Seoul, where hydrogen vehicles are most widely distributed. As of February 2022, hydrogen charging infrastructures were installed in Gangseo-gu, Gangdong-gu, Mapo-gu, Jung-gu, and Seocho-gu in downtown Seoul. Next, looking at the number of hydrogen vehicles by administrative dong in Seoul from 2018 to 2022, Seocho-gu has the most with 246 as of 2022, and Dongjak-gu has the highest average growth rate of 215.4% with a CAGR of 215.4%. Therefore, as a result of CAGR analysis, Dongjak-gu is expected to supply the most hydrogen vehicles in the future, and Seocho-gu currently has the most hydrogen vehicles, so it is likely that additional hydrogen charging infrastructure will be needed between Dongjak-gu and Seocho-gu.