• Architectural research
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• 제3권1호
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• pp.29-36
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• 2001

Concern about global environment has been increasing in recent years. Efforts to minimize the environmental impact to the globe as well as human beings have increased, especially in the late twentieth century. The study researches one of the solutions for the environmentally friendly building construction, which can contribute to sustaining the world environment. Assessment and proposals are made for high-rise apartments, one of the most popular construction types nowadays in Korea. Since the volume of high-rise apartment construction is so great, a small improvement in each building will make a great contribution. Assessments are made over the life-span of apartment buildings. A tool named EIAHA (Environmental Impact Assessment for High-rise Apartment) has been made through references from western examples, mainly in the UK. The components of EIAHA include passive design strategies, building materials, energy consumption during building operation and management/maintenance. Although the issues are on a global scale, solutions are sought on regional scale. Korean high-rise apartments are assessed with the tool and suggestions for sustainable development are made mainly for improvement of embodied energy of building materials and the life of buildings.

• 서비스연구
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• 제5권1호
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• pp.57-70
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• 2015

본 논문에서는 라우터의 라우팅 기능, L7스위치의 컨텐츠 기반 보안, IPS 침입 방지 시스템의 기능과 클라우드, 빅데이터 기술을 혼합한 새로운 형태의 패턴분석 패킷 필터링 방화벽 장비를 저가형 임베디드 장비에서 구현해 SOHO(소규모 창업) 및 소규모 회사 또는 일반 가정의 보안 수준을 개선하고 새로운 시장을 개척하는 것을 목표로 하며, 또한, 고성능 스위치 및 기존 보안장비 기능 대체를 목표로 해 개발하고, 저 사양 장치에서 고성능 시스템을 구현할 수 있는 새로운 차세대 알고리즘을 제시한다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 하계학술발표대회 논문집
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• pp.30-35
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• 2008

This paper describes a fault detection and diagnosis (FDD) system developed for the heat source apparatus in building air-conditioning system. As HVAC&R systems in building become complex and instrumented with highly automated controllers, the processes and systems get more difficult for the operator to understand and detect the mal-functions. Poorly maintained, degraded, and improperly controlled equipment wastes an estimated 15% to 30% of energy used in commercial building. When operating a complex facility, FDD system is beneficial in equipment management to provide the operator with tools which can help in decision making for recovery from a failure of the system. Automated FDD for HVAC&R system has the potential to reduce energy and maintenance costs and improves comfort and reliability. Over the last decade there has been considerable research for developing FDD system for HVAC&R equipment. However, they are being made too much of a theoretical study, so only a small of FDD methods are deployed in the field. This study deduced an actual defect source for the heat source apparatus and suggested a low price FDD method which is ready to be deployed in the field.

• International journal of advanced smart convergence
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• 제11권3호
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• pp.93-101
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• 2022

Immersion is a features of VR technology, and the most important condition for evaluating VR experience. With the improvement of VR technology, including the presentation accuracy of VR content, the degree of interaction is diversified, the user's immersion in VR equipment should not only be improved technically, but researched from the user's perception level. The paper defines two important factors, immersion and presence, in a participant's experience with a VR device. Although the current technology can already simulate the real environment information visually and audibly, the content of the VR environment is not enough for us to achieve a completely real experience. Based on the Flow theory of Csikszentmihalyi and the sensory immersion achieved by current technology, this paper proposes the key factors of how to achieve conscious immersion for users in VR media. We prove that immersion is an indicator of the true degree of sensory simulation of VR equipment and is the basis for the realization of flow experience. What really makes the participant feel a perfect experience is the content provided by the VR environment and gave participants a sense of presence, it is not limited to video or games. On the premise of the Multi-Sensory, Immersion, Interactivity and Imagination experience achieved by using virtual reality technology, combined with the content creation of flow theory, the interactive immersion achieved by users is an important method to realize the awareness immersion of VR equipment.

• 한국정밀공학회지
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• 제28권3호
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• pp.292-300
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• 2011

Control systems in machinery equipment provide correction signals to motion units in order to reduce or cancel out the mismatches between sensor feedback signals and command or desired values. In this paper, we introduce a simulator for control characteristics of machinery equipment. The purpose of the simulator development is to provide mechanical system designers with the ability to estimate how much dynamic performance can be achieved from their design parameters and selected devices at the designing phase. The simulator has a database for commercial parts, so that the designers can choose appropriate components for servo controllers, motors, motor drives, and guide ways, etc. and then tune governing parameters such as controller gains and friction coefficients. The simulator simulates the closed-loop control system which is built and parameter-tuned by the designer and shows dynamic responses of the control system. The simulator treats the moving table as a 6 degrees-of-freedom rigid body and considers the motion guide blocks stiffness, damping and their locations as well as sensor locations. The simulator has been under development for one and a half years and has a few years to go before the public release. The primary achievements and features will be presented in this paper.

• 해양환경안전학회지
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• 제11권1호
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• pp.17-22
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• 2005

선박의 항해 계기들의 기술이 발전됨에 따라 많은 장비들이 개발되고 있으나 여전히 인간과실에 의한 해양 사고는 지속적으로 발생하고 있는 현실에서, 인간과실에 의한 사고를 감소시키기 위하여 선교의 항해 계기들은 인간공학적적으로 배치, 설계되었는지가 많은 관심의 대상이 되고 있다 선교 내 여러 계기들의 알람장치는 선교 근무자에게 그 알람 장치가 주고자 하는 정보를 가능한 빨리 인식하고 정확한 정보를 전달할 수 있도록 설계되어야 하며, 국제적으로 인간공학적 선교를 위한 알람장치(Bridge Alarm Management System : BAMS)의 필요성이 논의 되고 있으나 아직 실질적인 설계방법 등에 대해서는 논의가 이루어지고 있지 않다. 따라서 본 논문에서는 선박의 여러 설비 중 선교의 알람장치에 관한 인간공학적 개념의 설계에 대하여 알아보고 현재 개발, 운용 중인 인간공학적 통합선교시스템(Integrated Bridge System :IBS)의 선교통합알람장치(Ergonomic Integrated Bridge Alarm Management System : EIBAMS)에 관한 개념적인 설계를 제안하고자 한다.

• 디자인학연구
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• 제17권4호
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• pp.51-60
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• 2004

대표적인 고부가가치 산업의 하나인 의료기기 산업은 선진국과의 기술격차를 최소화하여 해외수출시장의 진입이 매우 용이한 분야임에도 불구하고 그동안 일반인에게는 생소한 분야로 인식되어 각종 제도와 정책적인 지원 등에서 소외받아왔다. 특히 효율적인 진료와 환자의 심리적 안정을 위해 의료기기의 제품디자인은 매우 중요한 요소임에도 불구하고 디자인에 대한 무관심과 인식부족으로 투자와 지원이 부족했었던 대표적인 분야이다. 따라서 본 연구는 국내 의료기기 산업의 현황과 국내외 시장환경에 대한 일반적인 고찰과 함께 현 단계에서의 디자인문제점을 제시하고 이를 해결할 하나의 대안으로 대표적 고부가가치 장비인 이동형 영상진단장비에 대한 디자인개발 프로세스를 진행하여 결과물을 도출하였으며 이를 통한 디자인경쟁력의 중요성을 부각시키고 의료기기산업의 후발 디자인추진업체에 하나의 기초자료와 모델을 제시하고 지속적인 디자인투자의욕을 고취시키는 역할을 하고자 한다.

• 한국산업융합학회 논문집
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• 제23권5호
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• pp.709-716
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• 2020

Recently, the drone's equipment development and software technology have dramatically improved. With such developments, the applicability is increasing in various fields that require rapid geospatial information, and in practice, regulations and systems have been established, and the fields in use are increasing. Also, in Korea, corporations and public institutions are actually using and researching drones in fields such as aircraft development, communication technology development, construction site use, and surveying. However, there are no fields where drones are actually used in road construction sites. Therefore, in this study, to utilize drones that have been actively used in the civil engineering and construction fields for road construction, we investigated the current status of the Korea Highway Corporation's field drone use research and classified the possibility of drone introduction by road construction. Finally, a method of using drones at road construction sites was proposed to prepare a method for using drones at road construction sites.

• 항공우주기술
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• 제4권1호
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• pp.49-56
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• 2005

인공위성 및 발사체의 자세제어용으로 사용되는 단일추진제 추력기용 하이드라진 분해 촉매에 대한 연소성능을 실제 연소시험을 통하여 검증하였다. 촉매연소성능을 확인하기 위한 촉매 시험장치를 (주)한화와 공동으로 설계/제작하였으며, 이를 통하여 하이드라진 분해촉매의 연소지연시간, 촉매활성도, 촉매안정도를 측정함으로써 촉매 연소특성을 평가하였다. 또한 현재 진행 중인 국산화 촉매 시제품의 개발현황에 대해 소개하였다.

• 산업공학
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• 제25권1호
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• pp.114-126
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• 2012

This study describes a real-time location monitoring system developed for efficient operation of workplace in plant equipment maker. This monitoring system can be applied for indoor and outdoor working environment respectively. By using the real-time tracking system based on RTLS, it is possible to track worker's movement and location of working object under indoor working environment. For outdoor working environment, the real-time monitoring system based on IDGPS is applied for work safety and balanced workload. A case study is provided to evaluate the performance of the real-time monitoring system.