• 대한안전경영과학회지
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• 제16권4호
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• pp.247-255
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• 2014

Safety management is becoming one of the most hot research issues in Korea. We collected the researcher information in two safety related journals of the journal of the Korea safety management & science and the journal of Korean society of safety. Social network analysis was used to analyse the research relationship among the authors in each journal. The degree centrality, the betweenness centrality, the closeness centrality and the proximity prestige centrality on each researcher were calculated to find out most influenced researcher. Biggest research groups in each journal were introduced by clustering technique.

• 한국문헌정보학회지
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• 제43권3호
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• pp.59-84
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• 2009

인적, 물적 자본에 이어 사회 전체적 맥락에서 공공성을 지닌 부가가치의 창출에 기여하는 사회적 자본이 대두되고 있다. 사회적 자본은 관계적 자본과 사회 정책 실현의 효율성과 정당성을 높이는 사회 전체적 용량을 가지고 있다. 본 연구는 지식정보화 사회에서 국가적인 연구개발 연구인력정보시스템의 네트워크가 사회적 자본으로서 구축될 수 있는 방안에 대하여 살펴보았다. 이를 위해 국가 R&D 과제관리기관, 정부출연연구기관, 정보유통기관에서 연구인력정보시스템의 구축 현황을 살펴보았으며, 연구인력정보시스템 측면에서의 합의와 국가적 차원의 이해당사자 간의 사회적 신뢰 구축과 합의 방안에 대하여 탐색적인 논의를 제시하였다.

• 한국멀티미디어학회논문지
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• 제12권7호
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• pp.1022-1031
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• 2009

본 논문에서는 온톨로지 기반의 연구자 모델링 기법을 제안하고, 이를 이용하여 연구자간의 다양한 연결 속성을 이용한 연구자 네트워크를 구성한다. 연구자 모델링을 위한 온톨로지 스키마는 HR-XML을 기반으로 연구자 중심의 모델로 확장하여 생성하고 연구자 온톨로지 스키마와 인스턴스는 OWL를 이용하여 생성한다. 연구자 네트워크는 학연과 같은 정적인 연결속성과 공통 논문, 프로젝트와 같은 동적인 연결속성별로 가중치를 부여하여 연구자간 친밀도를 표현한다. 친밀도는 연구자별로 연구자 네트워크가 다르므로 방향성을 가진다. SWRL를 이용하여 연구자간의 직접 관계를 추론하기 위한 규칙을 정의하고, racer 추론기를 이용하여 온톨로지 규칙을 추론한다. 본 연구에서 제안한 모델은 연구자간의 협업 모델이나 공동 프로젝트 수행을 위한 전문가 집단을 동적으로 검색하는데 응용할 수 있다.

• Agricultural and Biosystems Engineering
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• 제2권2호
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• pp.69-74
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• 2001

Detection of operation lines in farm works, object recognition and obstacle avoidance are essential pre-requisite technologies for unmanned agricultural machinery. A CCD camera, which has been largely used for these functions, is expensive and has difficulty in real-time signal processing. In this study, a laser range sensor was selected as the guiding vision for unmanned agricultural machinery such as a tractor. To achieve this capability, algorithms for distance measurement, signal filtering, object recognition, and obstacle avoidance were developed. Computer simulations were carried out to evaluate performance of the algorithms. Experiments were also conducted with various materials and shapes, Laser beam lost its intensity for poor reflective materials, resulting in less range value than actual, so a compensation technique was considered to be necessary. Object detection system was fabricated on an agricultural tractor and the performance was evaluated. As test result for obstacle detection and avoidance in field, to detect and avoid obstacle for path finding with guiding system for unmanned agricultural machinery was enable.

• KSBB Journal
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• 제26권1호
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• pp.62-68
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• 2011

To isolate Lactic acid bacteria for animals, we have screened from Kim-chi, swine intestine, swine feces, and dairy products by random selection and anti-viral, antipathogenic bacteria test. Among them, CLP-1 shown that inhibitory effect against rotavirus, porcine epidemic diarrhea (PED) virus, Salmonella sp, and E.coli. By examining biological property, API-ZYM and identified Lactobacillus plantarum by 16S rDNAgene sequence. CLP-1 determined resistance to low pH and bile salt. Futhermore, the cell body of CLP-1 adhered to the intestinal epithelium tissue of swine and Caco-2 cell. CLP-1 was examined on cell immune system modulating activity in vitro. The whole cell and cell culture supernatant was increasing of interferon-${\beta}$ activity. And then, CLP-1 increased prevention effect by Salmonella enteritidis infection in SPF chickens. And we determined similar result in pigs.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(2)
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• pp.45-48
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• 2002

This paper discusses the surface roughness of negative chemically amplified resists, SAL601 exposed by I-beam direct writing. system. Surface roughness, as measured by atomic force microscopy, have been simulated and compared to experimental results. Molecular-scale simulator predicts the roughness dependence on material properties and process conditions. A chemical amplification is made to occur in the resists during PEB process. Monte-Carlo and exposure simulations are used as the same program as before. However, molecular-scale PEB simulation has been remodeled using a two-dimensional molecular lattice representation of the polymer matrix. Changes in surface roughness are shown to correlate with the dose of exposure and tile baking time of PEB process. The result of simulation has a similar tendency with that of experiment.

• 보건의료산업학회지
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• 제4권2호
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• pp.107-117
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• 2010

In this paper, the researcher looked into major issues in the "Act (Draft) on Remedy for Damage from Medical Accident and Medical Dispute Mediation, etc." which was proposed by the Health & Welfare Committee, the National Assembly of the Republic of Korea, and which was pending with the Legislation & Judiciary Committee. Then the researcher pointed out worrisome problems therein and presented suggestion" to improve problematic situations. First of all, the researcher examined the following items which are major points in the aforementioned Act: 1) Establishment of Korea Medical Dispute Mediation and Arbitration Center, 2) Procedures for mediation and arbitration of medical disputes, 3) Establishment of Medical Injury Compensation Association, 4) Introduction of proxy payment for damages, 5) Compensation for no-fault medical accidents, 6) A system concerned with special cases on criminal punishment. Next, the researcher closely reviewed the following possible issues: 1) Limit of arbitrary mediation, 2) Postponement of the system concerned with special case on criminal punishment, 3) Examination of reasons for rejection, 4) Function and role of the Appraisal department, 5) A possibility of being reduced to an evidence collection procedure for lawsuit, 6) A possibility of no-fault compensation rather than injury compensation, 7) Operational issues related proxy payment for damages. Lastly, the researcher presented suggestions on how to improve each problematic issue.

• Agricultural and Biosystems Engineering
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• 제5권2호
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• pp.45-49
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• 2004

Objective of the study was to develop a garlic clove metering device. The metering device consisted of a drum, a bucket and a bucket cover. A garlic clove simulator was designed to simulate motions of garlic cloves in the metering device. Simulation was performed using a multibody dynamic analysis program, RecurDyn version 5.1. Physical properties of garlic cloves such as mass and center of gravity were determined using 3D CAD modeler, IDEAS version 10.0. In order to compare the results of the simulation with actual movement of a garlic, movement of garlic clove was photographed by a high speed camera. A prototype metering device was built and tested under various metering speeds and metering guide angles. At the 12 rpm metering speed, rate of single-clove-discharge was $90.0\%$ and missing rate $1.3\%$ at $5^{\circ}$.

• Journal of Biosystems Engineering
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• 제27권4호
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• pp.335-340
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• 2002

Recently, in Korea, round bale wrapping silage made by fresh rice straw are partially utilized. The colors of stretch film using far wrapping the fresh rice straw round bale are white, green and black. The light transmittance of green and white color stretch film was not founded the difference. However, the light transmittance of black color stretch film was largely difference of two stretch films. This study was carried out to measure qualities of fresh rice straw wrapping silage by softening processing of fresh rice straw and colors effects of wrapping stretch film. The analyzed factors were the light transmittance of stretch film, variation of the temperature in fresh rice straw round bale and qualities of the silage in crude protein, ADF, NDF, organic acid, etc. It was difficult to find in this study the colors effects of stretch film on silage qualities by the silage wrapping. But, when make fresh rice straw wrapping silage, wrapping silage fermentation effect goes well more if handle softening the fresh rice straw.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제19권4호
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• pp.291-311
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• 2016

연구자는 직각으로만 이루어진 계단 모양의 둘레를 구하는 과정에서 이미 알고 있는 직사각형의 둘레를 구하는 방식을 활용하지 못하고 어려움을 겪는 모습을 보았다. 이에, 평면도형의 둘레에서 학생들이 어떠한 어려움을 겪고 있는지 확인하고 어려움을 겪는 학생들을 도울 수 있는 방법을 찾고자 하였다. 이를 위해 평면도형의 둘레 문제에 관한 다수 학생의 기록지를 분석하고, 그들 중 일부를 대상으로 면담을 수행하였다. 그 결과 학생들은 둘레를 구하기 위해 주어진 정보의 인식과, 그것을 해결에 필요한 정보로 전환하는 두 측면 모두에 어려움을 겪고 있으며, 둘레가 길이의 속성을 갖는다는 선행지식도 적절히 구성되어 있지 않음을 알 수 있었다. 이러한 결과를 토대로 이 연구에서는, 평면도형의 둘레 문제해결을 돕기 위한 지도방안을 제안하였다.