• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 추계학술대회논문집 I
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• pp.96-101
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• 2001

Recently, with the increasing of construction works, large construction equipment are used to reduce the term of work and labor cost in construction field. Therefore, construction equipment noise has caused much annoyance for a number of dweller in nearby construction field and it has become a very serious problem in our living environment. Neverthless, in our country, adequite guidelines for the construction equipment noise are very deficiency because of the lack of basic data and insufficient research works. From this point of view, this study attempts to survey the vertical SPL distribution of piling noise by oil pressure method in construction field. This study also present a basic data found a effective plans for piling noise by oil pressure method.

• 한국가구학회지
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• 제15권1호
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• pp.27-40
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• 2004

Designers in Korea have stuck to development of furniture which has high reliance of foreign national resources. They made mistake that they didn't try to make inroads into the world market. They have kept production system of labor intensive method till 1990. They imitated foreign manufactures to win in domestic economy. It became the complete lack of exploitation experience and brought stagnation of design which couldn't defeat. Now Korea is making progressive impression in territory of an electron and information in a foreign market. A new progress of furniture design which was developed centering around a digital suggest a new appearance that will lead a future with modernization in a space of residence. This sis a new starting point which was most completed by anyone. If we will prepare without delay we can take part in a world market with competitive power.

• Investigative Magnetic Resonance Imaging
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• 제25권2호
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• pp.76-80
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• 2021

Post-concussion syndrome (PCS) following mild traumatic brain injury (mTBI) is a major factor that contributes to the increased socioeconomic burden caused by TBI. Myelin loss has been implicated in the development of PCS following mTBI. Diffusion tensor imaging (DTI), a traditional imaging modality for the evaluation of axonal and myelin integrity in mTBI, has intrinsic limitations, including its lack of specificity and its time-consuming and labor-intensive post-processing analysis. More recently, various fast MR techniques based on multicomponent relaxometry (MCR), including QRAPMASTER, mcDESPOT, and MDME sequences, have been developed. These MCR-based sequences can provide myelin water fraction/myelin volume fraction, a quantitative parameter more specific to myelin, which might serve as a surrogate marker of myelin volume, in a clinically feasible time. In this review, we summarize the clinical application of the MCR-based fast MR techniques in mTBI patients.

• 기술사
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• 제37권5호
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• pp.42-46
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• 2004

Automobile industry with history of more than 100 years is totally influencing all the economic environments and has very important wellbeing role in the World in every country of the world. Korean Automotive industry in production has only about 40 years but ranked remarkably 6th biggist in the world in the year of 2003. Nowadays The auto, industry has changed into buyer's market in competitively global battle fields and also is changing industry paradigm in product, sales, production, colarboration & emerging, etc. BRICs(Especially China)are rapidly emerging as main producers and customers in new big markets. Korea Auto. Industry faces crictical problems such as higher salary, furious labor union's striking lack of raw material, evasion of 3D works with studying engineering by students which are the key pending agenda that should be overcome for prosperous growth and development of achieving US20,000 GNP.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.132-133
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• 2015

Efficient scheduling and resource management are the key factor to reduce construction project budget (e.g., labor cost, equipment cost, material cost, etc.). Resource-based line of balance (LOB) technique has been used to complement the limitations of time-driven scheduling techniques (e.g., critical-path method). Optimizing construction alternatives contributes cost savings while honoring the project deadline. However, existing LOB scheduling is lack of identifying optimal resource combination. This study presents a method which identifies the optimal construction alternatives, hence achieving resource minimization in a repetitive construction by using genetic algorithm (GA). The method provides efficient planning tool that enhances the usability of the system.

• 한국전자통신학회논문지
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• 제16권1호
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• pp.81-88
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• 2021

최근 COVID-19로 인한 온라인 강의 영상과 같은 많은 영상이 생성되고 있는데 노동 시간의 한계와 비용의 부족 등으로 인해 자막을 보유한 영상이 일부분에 불과하여 청각장애인들의 정보 취득에 방해 요소로 대두되고 있다. 본 논문에서는 음성인식을 이용하여 자막을 자동으로 생성하고 종결 어미와 시간을 이용해 문장을 분리하여 자막을 생성함으로써 자막 생성에 드는 시간과 노동력을 줄일 수 있도록 하는 시스템을 개발하고자 한다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.158-160
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• 2015

Efficient scheduling and resource management are the key factor to reduce construction project budget (e.g., labor cost, equipment cost, material cost, etc.). Resource-based line of balance (LOB) technique has been used to complement the limitations of existing time-driven scheduling techniques (e.g., critical-path method). Optimizing construction alternatives contributes to cost savings while honoring the project deadline. However, existing LOB scheduling is lack of identifying optimal resource combination. This study presents a method which identifies the optimal construction alternatives, hence achieving resource minimization in a repetitive construction by using genetic algorithm (GA). The method provides efficient planning tool that enhances the usability of the system.

• 한국과학교육학회지
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• 제39권2호
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• pp.307-320
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• 2019

본 연구는 강의식 과학 수업 사용에 머물러 있었던 초등 담임교사가 어떻게 다양한 과학 수업 방법을 사용할 수 있게 되었는지를 탐색한 것이다. 자문화기술지 방법을 사용하여 초등 담임교사의 한 해 동안의 과학 수업 준비와 실행에 대한 자기 기억자료, 수업일지, 페이스북 일기, 인터뷰 자료가 데이터 분석을 위해 수집되었고, 수집된 데이터들은 문화 역사적 활동 이론을 통해 분석되었다. 연구자는 데이터를 통하여 활동 시스템 상에서 어떠한 핵심 요소(i.e. 행위자로서의 담임교사, 규범, 분업, 도구, 목표, 산출)들의 상호작용이 특징화되었고 이것들이 어떻게 교사의 수업 방법을 구체화시켜 나갔는지를 분석하였다. 이를 기반으로 본 연구는 첫째, 과학 수업 준비를 소홀히 하는 규범, 개별적인 공동체, 분업 없음의 요소들이 행위자인 초등교사의 수업을 강의식 수업만으로 이끌게 되었고, 이로 인해 모순이 발생하게 되었음을 밝혔다. 둘째, 기존의 규범, 공동체, 분업 요소가 과학 수업 준비시간을 절약하거나 다양한 수업을 준비하도록 하는 규범, 협력적인 공동체, 역할 분담의 분업 형태로 변화되면서 행위자의 수업 도구를 다양한 과학 교수 방법(i.e. 실험, 논변 수업, 교과 통합 수업, 현장 학습)으로 사용하도록 이끌었으며, 이를 통해 모순이 완화될 수 있었음을 보였다. 또한, 본 연구에서는 초등 담임교사와 동료 교사들이 개인의 과학 수업 전문성을 키우는 것뿐만 아니라 학교 현장에서 다양한 과학 수업 방법 사용에 모순되는 규범, 공동체, 분업 요소를 잘 다루어 나갈 때 학습자 중심 수업이 촉진될 수 있음을 논의하였다.

• ETRI Journal
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• 제45권3호
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• pp.479-491
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• 2023

The automation of agricultural machines is an irreversible trend considering the demand for improved productivity and lack of labor in handling agricultural tasks. Unstructured working environments and weather often inhibit a seemingly simple task from being fully autonomously performed. In this context, we propose a remote driving system (RDS) to aid agricultural machines designed to operate autonomously. Particularly, we modify a commercial speed sprayer for orchard environments into a robotic speed sprayer to evaluate the proposed RDS's usability and test three sensor configurations in terms of human performance. Furthermore, we propose a confidence error ellipsebased task performance measure to evaluate human performance. In addition, we present field experimental results describing how the sensor configurations affect human performance. We find that a combination of a semiautonomous line tracking device and a wide-angle camera is the most effective for spraying. Finally, we discuss how to improve the proposed RDS in terms of usability and obtain a more accurate measure of human performance.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1075-1080
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• 2009

Recently, the building construction industry has been forced to cope with lack of skilled labor. A robot-based construction automation system should help overcome crucial troubles which may be caused by this phenomenon. In particular, it is vital to propose design for automation (DFA). Quality function deployment (QFD) is applied a systematic aid in determining the design reflecting customer's needs. This study employs the QFD approach to plan the component designs of an effective automation process, and presents the development process of DFA with an illustrative project. As a result, the study identifies the developers' design requirements for automated construction and weights them by their importance indices.