• 한국항행학회논문지
• /
• 제26권3호
• /
• pp.125-135
• /
• 2022

최근 항공산업 분야의 최대 이슈로 부각되고 있는 UAM(Urban Air Mobility)은 국내 뿐아니라 국제적으로 많은 관심이 집중되고 있다. 현재 우리나라는 미래 K-UAM 운용개념서 제정 등 정부 및 산학연을 중심으로 활발한 연구가 진행되고 있으나 아직까지 비행안전의 핵심 요소인 K-UAM 운용 환경에 대한 위험도 평가 방안은 마련되어 있지 않다. 따라서 본 논문에서는 유럽 JARUS(Joint Authorities for Rulemaking on Unmanned Systems)에서 제정한 SORA(Specific Operation Risk Assessment) 모델을 적용하여 정부가 추진하고 있는 화물 운송 목적의 K-UAM 운용 환경 및 특정 회랑을 대상으로 위험도를 평가하고 그에 따른 결과 분석을 통해 위험도 완화를 위한 정책 및 기술적 방안을 제시하고자 한다.

• 정보처리학회논문지B
• /
• 제9B권4호
• /
• pp.437-444
• /
• 2002

정보 검색 시스템이나 웹(Web)이 방대해지고 초보적 수준의 사용자들이 늘어남에 따라 간단한 조작만으로 원하는 정보를 얻어낼 수 있는 도구의 개발이 점점 중요해지고 있다. 일반적으로 정보 검색 시스템이나 검색 엔진을 통한 질의 입력 방법이나 연산자들이 매우 다양하며 일반 사용자들은 질의를 형식화 하는 것이 쉽지 않다. 본 논문은 일반 사용자가 정보 검색 시스템이나 검색 엔진을 통하여 정보를 검색하기 위한 검색어 형식화를 도와주는 개념 마법사를 제안한다. 본 논문에서 제시한 개념 마법사는 실세계 지식의 부족을 시소러스를 이용하여 인터렉티브(interactive) 하게 제시하고 웹을 기반으로 하는 플러그인(plug-in)으로 제공함으로써 유용성 및 확장성이 크다.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
• /
• pp.300-306
• /
• 2000

This paper introduces a new concept of automation for bio-production with tele-operative system. The proposed system showed practical and feasible way of automation for the volatile bio-production process. Based on the proposition, recognition of the job environment with object identification was performed using computer vision system. A man-machine interactive hybrid decision-making, which utilized a concept of tele-operation was proposed to overcome limitations of the capability of computer in image processing and feature extraction from the complex environment image. Identifying watermelons from the outdoor scene of the cultivation field was selected to realize the proposed concept. Identifying watermelon from the camera image of the outdoor cultivation field is very difficult because of the ambiguity among stems, leaves, shades, and especially fruits covered partly by leaves or stems. The analog signal of the outdoor image was captured and transmitted wireless to the host computer by R.F module. The localized window was formed from the outdoor image by pointing to the touch screen. And then a sequence of algorithms to identify the location and size of the watermelon was performed with the local window image. The effect of the light reflectance of fruits, stems, ground, and leaves were also investigated.

• 연구윤리
• /
• 제3권1호
• /
• pp.17-21
• /
• 2022

Purpose: Research ethics has social implications beyond the issues of personal morality and research integrity. In recent years, research ethics has become a more controversial topic in society. In this study, the concept of the university research ethics curriculum is defined, the current status of the research ethics curriculum is analyzed, and the direction of the university research ethics curriculum development direction is discussed. Research design, data and methodology: The concept of university research ethics education and the current status of research ethics education were examined, and the development direction of the university research ethics curriculum was explored based on the framework . Results: field education to secure university research ethics is still insufficient. In other words, only 12 universities for undergraduate programs and 37 universities for graduate programs included research ethics in their regular curriculum. Conclusions: The occurrence of research misconduct is mainly caused by not recognizing the error or not taking it seriously. In particular, university research misconduct results from a lack of understanding of research ethics, poor research education, a performance-oriented academic climate, and the absence of an institutional system for establishing research ethics.

• 한국항공운항학회지
• /
• 제9권2호
• /
• pp.77-89
• /
• 2001

Recently, the development of an airship that flies through the stratosphere was undertaken in Korea by Korea Aerospace Research Institute like other countries. With the consideration of new operation concept, it is on the rise that the current certification requirements and operation system is not sufficient to secure safety and reliability. This study was performed to establish the certification requirements and operation system. The amendment of airworthiness standards was reviewed by each articles, and the new procedures, as a level of national regulations, for operation was proposed. The results gained through this study can be utilized effectively in the development and operation of subjected airship.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
• /
• pp.382-385
• /
• 2004

Communication Ocean Meteorological Satellite (COMS) for the hybrid mission of meteorological observation, ocean monitoring, and telecommunication service is planned to be launched onto Geostationary Earth Orbit in 2008 according to the Korea national space program. A feasibility study on the solar constraint in the operation of the COMS meteorological imager (MI) is performed using the GOES imager hardware operation characteristics. The Earth observation areas of the MI are introduced and the observation time of the MI observation area is calculated. The sun light can enter into the MI optical system around the local midnight and impinge on the performance of the MI. The solar eclipse viewed from the satellite occurs near local midnight around the equinox. This study discusses the restriction of imaging operation time that should be considered in order to avoid the solar intrusion about local midnight and to keep acceptable image quality for the MI observation areas. This study could be useful to build the operation concept of the MI during the development of the MI.

• 대한원격탐사학회지
• /
• 제19권1호
• /
• pp.37-42
• /
• 2003

Recently, KARI implemented the receiving and processing system for MODIS sensor data from NASA EOS satellites (TERRA and AQUA). This paper shows the development strategy considered, system requirement derived, system design, characteristic and test results of processing system. System operation concept and sample image are also provided. Implemented system was proven to be fully operational through lots of pass operations activities from RF signal reception to level-1 processing.

• Journal of Electrical Engineering and Technology
• /
• 제12권1호
• /
• pp.478-485
• /
• 2017

Urban DC railways have played an important role in urban transportation, and railway operation and energy management have been emphasized to be important to achieve maximum efficiency from existing infrastructure. Fast, accurate DC railway power flow analysis is required to operate a DC railway efficiently, and this paper proposes a novel methodology to analyze the DC railway power network by implementing the participation factor (PF). The PF concept consists of a correlation between the vehicle and the substation, as explained using zones based on the position of the vehicles running on the route. Then, the DC railway powerflow is calculated using the PF concept. Finally, the usability of the proposed method was validated via case studies with actual railway operation data, and we discuss some of the advantages of the suggested methodology.

• Journal of applied mathematics & informatics
• /
• 제38권1_2호
• /
• pp.65-77
• /
• 2020

In this paper, for any non-empty subsets A, I of a pseudo BCI-algebra X, we introduce the concept of pseudo p-closure of A with respect to I, denoted by A^pc_I, and investigate some related properties. Applying this concept, we state a necessary and sufficient condition for a pseudo BCI-algebra 1) to be a p-semisimple pseudo BCI-algebra; 2) to be a pseudo BCK-algebra. Moreover, we show that A^pc_{0} is the least positive pseudo ideal of X containing A, and characterize it by the union of some branches. We also show that the set of all pseudo ideals of X which A^pc_I = A, is a complete lattice. Finally, we prove that this notion can be used to define a closure operation.

• 한국연소학회지
• /
• 제17권3호
• /
• pp.30-45
• /
• 2012

An existing unit of power plant is considered to refurbish it for possible application of carbon capture and storage(CCS). Conceptual design of the plant includes basic considerations on the national and international situation of energy use, environmental concerns, required budget, and time schedule as well as the engineering concept of the plant. While major equipment of the recently upgraded power plant is going to be reused, a new boiler for air-oxy fired dual mode operation is to be designed. Cryogenic air separation unit is considered for optimized capacity, and combustion system accommodates flue gas recirculation with multiple cleaning and humidity removal units. The flue gas is purified for carbon dioxide separation and treatment. This paper presents the background of the project, participants, and industrial background. Proposed concept of the plant operation is discussed for the possible considerations on the engineering designs.