살리실산 에탄올 용해법을 이용한 고로슬래그미분말의 정량화를 위한 실험적 연구

최희복(Choi Hee-Bok),강경인(Kang Kyung-In) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.9

In Japan, the standard for blast furnace slag cement and concrete get readied and, they are utilizing much blast furnace slag for a special concrete used in sea construction etc.. But, in domestic, it is existing state that a standard about this gets not readied yet. Thereby, the blast furnace slag cement and concrete is used to normal concrete as unlawful by the ready-mixed concrete companies. Therefore, this research will bring into the open the use of blast furnace slag cement and concrete. We propose the salicylic acid ethanol melting method as one that can quantify the included blast furnace slag to cement and concrete. Result of a laboratory that applied salicylic acid ethanol melting method, it could receive exactitude as error rate of the 5% more or less. Also, we collected two kinds of fresh blast furnace slag concrete from ready-mixed concrete that is carried in building site, and result that carried out an experiment equally by the method that did in a laboratory experiment with the samples was obtainable high accuracy as error rate of about 5%, too. Experiment result until now, it is considered that the salicylic acid ethanol melting method that is quantitative method of blast furnace slag cement and concrete proposed in this research is practicality very. Although, in this research, it studied to fresh concrete, it is forward research task that grope method to measure quantity of blast furnace slag powder in hardened concrete interior.

이동 애드 혹 네트워크에서 QoS를 지원하는 라우팅 프로토콜

강경인(Kyung-In Kang),박경배(Kyung-Bae Park) 한국컴퓨터정보학회 2007 韓國컴퓨터情報學會論文誌 Vol.12 No.2

본 논문에서는 AODV(Ad hoc On demand Distance Vector)에 근간을 두고 QoS(Quality of Service)를 지원하는 이동 애드 혹 라우팅 프로토콜을 제안했고 시뮬레이션을 통하여 성능을 평가했다. 각 노드에서 사용 가능한 통신 자원을 미리 고려하여 QoS 지원에 적합한 최단 경로를 설정함으로써 자원 소비를 줄일 수 있다. 성능 평가를 위해, 노드들의 이동성과 최선형 및 QoS 지원형 서비스 흐름의 수를 고려하여 평균 데이터 수신율을 분석했다. 이동 애드 혹 네트워크에서 특정 흐름들에 대한 QoS 지원형 서비스는 QoS 지원형 흐름들의 평균 데이터 수신율을 증가시켰다. In this paper, we proposed a mobile ad hoc routing protocol based on AODV(Ad hoc On demand Distance Vector) with QoS(Quality of Service) support and evaluated the performance through simulation. The waste of communication resources is reduced by establishing the shortest route suitable to QoS support, considering in advance the usable communication resources at each node. For performance evaluation, we analyzed the average data reception rate , considering the node mobility and the number of best effort/QoS data flows. We found that in the mobile Ad Hoc networks the QoS service for some specific data flows increased the average data reception rate for the QoS data flows.

시공단계에서의 친환경 경량 거푸집 탄소배출량 평가

강신훈 ( Kang Sin Hun ),안희재 ( Ahn Hee-jae ),이창수 ( Lee Chang-su ),이동민 ( Lee Dongmin ),조훈희 ( Cho Hunhee ),강경인 ( Kang Kyung-in ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2

The purpose of this study is to validate the environmental performance of the ‘eco-friendly lightweight form’ in the construction process. Unlike existing euro form and aluminum form, the proposed form does not require form oil during the process of concrete casting and is lightweight because it is made of engineering plastic. Therefore, eco-friendly lightweight form will reduce the CO₂ emissions in the construction process. To verify the hypothesis, the study compared existing forms and eco-friendly light weight form’s CO₂ emissions in each stage in construction process when using 1,000 forms and 100 times from the LCI(Life Cycle Inventory) data. The total CO₂ emissions of the eco-friendly light weight form were 30,487kg CO₂, which equated to about 58% and 20% less emissions than the euroform and aluminum form. The result of the study verified that the eco-friendly lightweight form was effectively reduced CO₂ emission in the construction process.

한국 호스피스.완화의료학회지 게재논문 분석(창간호~2012년)

황인철,강경아,안홍엽,Hwang, In Cheol,Kang, Kyung-Ah,Ahn, Hong Yup 한국호스피스완화의료학회 2013 한국호스피스.완화의료학회지 Vol.16 No.2

본 고는 지난 15년간 한국 호스피스 완화의료학회지에 발표된 논문의 내용과 경향을 파악함으로써 향후 연구의 방향을 제시하는데 그 목적이 있다. 1998년부터 2012년까지 총 240편(종설 51편, 원저 189편)의 논문을 5년 단위로 분류하여 살펴보았다. 분석틀에는 저자 정보(지역 및 직종)와 논문 정보(대상자, 주제, 설계유형, 분석방법, 윤리적 고려, 다학제 접근, 연구기금 수혜, 그리고 표본수 산정)를 포함하였다. 게재논문의 총 편수는 갈수록 증가하고 있으나 이는 종설의 증가에 따른 것으로 원저의 게재 증가는 매우 미미하였다. 연구 주제는 보건사업과 신체증상에 관한 것이 가장 많았고, 저자의 지역간 편차는 해소되었으며, 직종에서는 간호사의 논문 편수 증가가 두드러졌다. 연구기금 수혜 논문은 증가하고 있었고, 다학제간 접근과 보호자를 대상으로 한 연구는 줄어드는 추세를 보였으며, 연구설계에서는 실험연구와 방법론적 연구가 미약한 증가세를 보였다. 질적 측면에서는, 윤리적 고려나 연구참여 동의를 받는 연구가 증가하였고, 표본수 추정을 한 연구는 미약하게 증가하였으며, 통계기법에서는 보정 후 비교법이 줄어드는 추세였지만, 새로운 통계기법의 사용은 증가하였다. The purpose of this paper is to suggest a direction for future studies based on the analysis of the articles published in the Korean Journal of Hospice and Palliative Care from 1998 to 2012. A total of 240 articles (51 reviews, 189 original) were examined in three five-year groups. Categories of analysis include authors' background (profession, region) and general characteristics and qualitative aspects of the original paper (participants, topic, study design, data analysis, ethical consideration, multidisciplinary approach, research funds and sample size estimation). While the journal publishes more of articles than before, it is mainly due to the increase in the number of review articles, not original articles. As for study topics, healthcare industry and physical symptoms were most frequently studied. The disparity in authors' regional background is fading, and more articles are published by nurses than before. Moreover, more studies are funded while fewer papers tend to adopt a multidisciplinary approach or focus on care givers. Also, in terms of a study design, the number of experimental and methodological studies has slightly increased. In the qualitative aspect, studies considered ethical issues and collected participation consent, and fewer studies reported an estimated sample size. In data analysis, post-adjustment comparison decreased, and new analytical methods are increasingly used. Our results indicate the need to conduct research with more extensive scientific data in various fields of hospice and palliative care.

국내 건설 폐기물 활용 현황 및 활성화에 관한 연구

장재명,최희복,강경인,Jang, Jae-Moung,Choi, Hee-Bok,Kang, Kyung-In 한국건축시공학회 2003 한국건축시공학회지 Vol.3 No.1

Recently, the amount of the construction and demolition wastes has rapidly increased due to increasing construction projects. In the past, most of the construction and demolition wastes were buried in the ground of thrown away. Illegally, without any treatment, so various harmful environmental pollution problems were occurred. In this study, the domestic data on the amount of the construction and demolition wastes and the disposal methods were collection and analysed. Specially, the recycling and management systems of the construction and asphalt concrete wastes were studied. A new technology and necessary policy for recycling were suggested. In general, the industrial wastes were produced in the particular place, and the amount and the characteristics of the wastes able to be estimated by the studies on the treatment technology. And the investment of the facilities for the industrial wastes have been made continuously. But little attention has been relatively given to the treatment technology. And system for the construction and demolition wastes for the political support and facilitation on the proper treatment and the recycling, the necessary of information exchange system and the manifest system for treatment of waste on commission were recommended, and also devised methods to develope and support the recycling industry. In the future, the subject of study is going to carry out analysis of economic and market in making products.

위치추적 센서를 이용한 터널의 실시간 시공관리

이강현,김대원,문성모,조훈희,강경인,이인모,Lee, Kang-Hyun,Kim, Dae-Won,Mun, Sung-Mo,Cho, Hun-Hee,Kang, Kyung-In,Lee, In-Mo 한국터널지하공간학회 2011 한국터널지하공간학회논문집 Vol.13 No.2

Construction sites are becoming larger and complex with the growth of national economy. Accordingly, it is important to identify real-time information about materials, equipments, and manpower during construction at sites. Even though research utilizing position tracking sensors has been conducted in architectural engineering fields, this area of research is almost nil in civil engineering fields. Therefore, a feasibility study to find a way to apply position tracking sensors to an in-situ tunnel construction site adopting conventional tunnelling method is performed in this study. A methodology is proposed that the progress management of the tunnelling work can be monitored by checking construction materials needed at job site and the safety management system can be assessed by checking distance between in-situ workers and construction equipments. The most representative materials were identified so that IT technology can be applied by attaching and monitoring sensors to the selected materials. Also, time of arrival (TOA) for a position determination technology along with a wireless network technology was chosen and build wireless network system. The adopted methodology was applied to an in-situ tunnelling site, and verified the usefulness of the proposed system. 국가 경제규모의 성장과 더불어 단위 건설현장도 대형화, 복합화 되어 가고 있는 추세이다. 이에 따라 건설현장에서는 효율적인 프로젝트 관리를 위하여 자재, 장비, 인력 등의 자원에 관한 실시간 정보파악의 요구가 증가하고 있다. 최근 건축분야에서는 다양한 위치추적 센서를 활용한 시공관리에 대한 연구가 이루어지고 있다. 하지만 토목분야에서는 이러한 연구가 거의 전무한 실정이다. 따라서 본 연구에서는 터널 시공 방법 중 NATM 공법을 대상으로 위치추적이 가능한 센서를 활용하여 자재를 이용한 진도관리와 장비와 인력간의 안전관리에 있어서 실제 현장에 활용 가능한 방법을 제시하였다. 각 공정의 자재를 이용한 진도관리 방안과 사람과 장비의 거리를 통한 안전관리 방안을 제시하였다. 센서를 부착할 진도관리용 자재를 선정하고, 위치좌표를 계산하기 위한 TOA방식의 무선측위기술과 무선랜을 이용하여 터널 현장에 무선 네트워크 시스템을 구축하였다. 이를 바탕으로 터널 현장에 적용 가능한 모델을 제시하였으며, 현장 예비 시험과 현장시험을 통하여 시스템을 검증하였다.

절곡 후 펴기작업에 의한 철근의 성능변화 및 대책에 관한 연구

최희복(Choi Hee-Bok),김현석(Kim Hyun-Seok),서덕석(Seo Deok-Seok),강경인(Kang Kyung-In) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.9

As mass of buildings are getting bigger, more complicated and skyrocked building structure frames are changed. As a result, when each member is connected that necessarily reinforcing bar is occurred by bending and straightening in top-down method, tilt-up method, open in a slab and a stair hall and so on.<br/> In this experiment, we distribute the bending angle to 60, 90 and 120. We separate them into two groups. One is straightening right after bending and the other is straightening after one week. We will use the bars whose size is HD13 and HD16. The number of tests will be 60 times. <br/> In the case of HD16, the increase of bending angle is decreased in yield strength and maximum strength of bar. And compared with thinner bars, HD16 is showed bigger differences in yield strength and maximum strength of bar when the 'being bent' duration get longer. <br/> Top-down method and tilt-up method more often need an additional measure, especially at the point of time linking the materials together, to bend reinforcing bars of slab open and stair case, and then strengthen them afterwards, which requires more than 20-30% yield strength and maximum strength respectively.<br/> In short, In planning and structuring a building, above-mentioned supplementary reinforcement should be taken into consideration.

초고층 건축물의 시공자동화와 DFA(Design for Automation)

강경인(Kang Kyung-In) 대한건축학회 2009 建築 Vol.53 No.8

학술연구 : 코스닥등록 벤처기업의 자본조달방식이 투자와 경영성과에 미치는 영향

강경모 ( Kyung Mo Kang ),전인오 ( In Oh Jeon ) 한국중소기업학회 2007 기업가정신과 벤처연구 Vol.10 No.3

초고층 골조시공에 적용되는 친환경 저소음 경량 거푸집 기술

강경인(Kyung-In Kang) 한국콘크리트학회 2019 콘크리트학회지 Vol.31 No.6