• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2439-2449
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• 2011

Existing grade crossings between railway and roadway area gradually changed to grade separation systems by the law. In the case of new roadway construction which crosses railways, it shall be grade separation system in principle. With the railway underground crossing method, many practices have been developed which can minimize rail displacements and avoid rail release. With these methods, the effects to the train can be reduced. The underground crossing methods can be identified as open-cut methods and non open-cut methods. The open-cut methods include temporary support methods and special rail construction methods. Also the non open-cut methods includes pipe roof methods, front jacking methods, messer shield methods, NTR methods and JES methods. Among these, the most suitable method is applied considering safety, economy, class of each rail system (train passing frequency and velocity), etc. In the non open-cut methods, the cost and duration shall be increased to keep existing rail system during construction. In the open-cut methods which use plate girders, the rail speed shall be restricted due to the displacement and vibration of the girder. In this study new grade separation methods were developed. With this method, the safety during construction can be increased. This method refines temporary support methods, but pc slab girder with huge stiffness is applied instead of plate girders. With this method, the rail displacement can be reduced and higher safety can be obtained during construction. Also construction cost and duration can be minimized because the temporary work and the overburden soil depth can be reduced.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.614-620
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• 2011

Railway intelligent transportation systems and related Ministry of Land and rail operating agency's railway informatization planning of information technology, effective through the use of management strategies to establish or run to support the systematic informatization investment that you want to execute work in progress, during and yet the institutional informatization of operations mainly in the form of efficiency is Chinhae. Accordingly, in order to promote the details of the final challenge of providing real-time information and the usefulness of this information collection is clearly for the railway sector by function of the components is necessary to distinguish. In this paper, the details of the plan goals, promoting convenient rail-based real-time information, to promote optimal gohyoeuleul railways, railway safety and comfort, was defined as three. Selection of each goal, because the direction of vision and ITS around the railroad center of road users by highlighting the benefits of the railroad's traffic information center user switching, real-time delivery of information diversity (enhanced content) that can increase the capacity of line train operating systems, enhancing the safety management system introduced in the monitoring system and is a railroad crossing. Because urban railway project in accordance with the goal of decreasing the annual rate of the train support, and the average passenger wait time savings, increased future demand for railway, rail safety, including securing the expected effects may occur.

• 대한가정학회지
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• 제28권1호
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• pp.125-140
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• 1990

The purpose of this study is to inverstigate the need of child care services and child care programs for the working class mothers. We surveyed four Industrial complex (in Seoul, Incheon, Pusan, Ulsan) to collect data. The samples were 282 mothers (Seoul: 95, Incheon: 54, Ulsan: 62, Pusan: 71). The mothers had children under six years of age and they worked at factory for 11 hours. They (65%) rented houses with 1-2 rooms. Their income was not enought to support their family. They were never supported by social network, so they had to work at factory and they need child care services. The mothers had many difficulties of child rearing and early childhood education. They wanted perfect day care programs. They expected it as followings: (1) Day care center placed at factory or near home. (2) The administrater is goverment or employer. (3) It is managed a full time system. (4) It is center-based day care or industrical day care. (5) They share day care expense with employer or goverment. (6) Day care expenses is 35,000 won in case of full time system, 25,000 won in case of half-time system. They desited highly qualifed day care programs, but they would not expense highly cost. So we suggest that goverment and factory employers support the working mothers.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권10호
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• pp.5023-5038
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• 2017

Big data is an emerging technology which deals with wide range of data sets with sizes beyond the ability to work with software tools which is commonly used for processing of data. When we consider a huge network, we have to process a large amount of network information generated, which consists of both normal and abnormal activity logs in large volume of multi-dimensional data. Intrusion Detection System (IDS) is required to monitor the network and to detect the malicious nodes and activities in the network. Massive amount of data makes it difficult to detect threats and attacks. Sequential Pattern mining may be used to identify the patterns of malicious activities which have been an emerging popular trend due to the consideration of quantities, profits and time orders of item. Here we propose a sequential pattern mining algorithm with fuzzy logic feature selection and fuzzy weighted support for huge volumes of network logs to be implemented in Apache Hadoop YARN, which solves the problem of speed and time constraints. Fuzzy logic feature selection selects important features from the feature set. Fuzzy weighted supports provide weights to the inputs and avoid multiple scans. In our simulation we use the attack log from NS-2 MANET environment and compare the proposed algorithm with the state-of-the-art sequential Pattern Mining algorithm, SPADE and Support Vector Machine with Hadoop environment.

• 디지털산업정보학회논문지
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• 제5권2호
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• pp.199-208
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• 2009

Mosts of export/import cargo has been moving using maritime transport means. Korea had been driven the system automation project using EDI document since the mid-1990s. However, this automation system comes upon about 40-50% against overall maritime business process, manual or paper document processing work is existing as ever. International e-business environment also has changing into electronic form document transaction from paper document-based transaction. International standardization organization, UN/CEFACT proposed UNeDocs for paperless jtransaction. UNeDocs is a specification to define XML data model as well as electronic form. With UNeDocs, it is not necessary to generate the duplexed data, and it can support user convenient and guarantee the flexibility. This paper defines the UNeDocs data model for EDI and Off-Line processing at the current maritime business. Then, it have to check XML syntax and structure for the defined data model through quality of document check system. Also, it explains the applying plan about the defined UNeDocs data model. It is possible to support paperless transaction as defining UNeDocs-based standard data model and converting into paper document, XML and EDI document using UNeDocs data model.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2008년도 한국우주과학회보 제17권2호
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• pp.37.1-37.1
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• 2008

Space Science and Technology Laboratory at Kyung Hee University developed an 80cm Nasmyth telescope with the joint work of Space & Astronomy, Inc. It was set up at Muju county public astronomical observatory in Jeonlabuk-Do. Nasmyth focus system was selected for the telescope to use two focal points by a rotatable tertiary mirror. Focal ratios of the telescope are f10, f5 respectively. Support of the main mirror is made with Lasalle-system. This system uses 24-points in the back side of the mirror that are all resting on small counter-weights and side support is 10-points Boll link Flexible type with 2 Lasalle type. The mount is wheel & disk type Alt-Azimuth design using DC-servo motors. External high accuracy encoder has 47,600 sine-waves/rot. These encoders are used to make real-time corrections on all gearing errors.

• 한국게임학회 논문지
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• 제17권4호
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• pp.37-46
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• 2017

최근 다양한 분야들 간의 융복합 게임화 프로세스가 활발하게 적용되고 있다. 본 논문에서는 확장 협력 요소를 중심으로 한 환경교육을 지원하기 위한 게임화 방안 및 시스템을 제안한다. 게임 메카닉스, 시스템 구조, MDA 모델을 중심으로 기후변화교육에 적용할 수 있는 게임화 과정의 설계 및 이를 구현하기 위한 게임화 요소와 하위 게임 구조를 도출한다. 제안된 게임화 시스템을 활용할 수 있도록 하는 중요한 동기인 용이성, 친밀성, 관련성, 편이성, 유용성에 대한 평가자들의 의견을 반영한다.

• 한국지능시스템학회논문지
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• 제20권5호
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• pp.716-721
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• 2010

In this work we address the use of support vector machine (SVM) in the multi-class gas classification system. The objective is to classify single gases and their mixture with a semiconductor-type electronic nose. The SVM has some typical multi-class classification models; One vs. One (OVO) and One vs. All (OVA). However, studies on those models show weaknesses on calculation time, decision time and the reject region. We propose a hierarchical clustering method (HCM) based on the SVM for real-time gas mixture classification. Experimental results show that the proposed method has better performance than the typical multi-class systems based on the SVM, and that the proposed method can classify single gases and their mixture easily and fast in the embedded system compared with BP-MLP and Fuzzy ARTMAP.

• 융합정보논문지
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• 제9권8호
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• pp.63-73
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• 2019

본 연구의 목적은 중소병원 간호사의 간호근무환경과 호혜성이 직무배태성에 미치는 영향을 확인하는 것이다. 자료수집은 G시에 소재한 4개의 중소병원에서 근무하는 206명의 간호사를 대상으로 2019년 3월 4일부터 22일까지 수행하였다. 간호사들이 지각한 직무배태성 점수는 5점 만점에 평균 3.06점으로 중간 이상이었으며, 간호근무환경의 하위변인 중 간호사 지원체계와 안전관리체계가 높을수록, 그리고 호혜성 하위변인 중 협력자간 상호균형과 환자나 보호자에 대한 애정과 호의가 높을수록 직무배태성에 정적인 영향을 미치는 것으로 나타났다. 다중회귀 분석결과 연구모델은 직무배태성의 66.0%를 설명하였고, 이 중 직무배태성에 영향을 미치는 가장 강력한 변인은 간호사 지원체계임이 확인되었다. 따라서, 중소병원의 간호관리자들은 간호사 인력관리를 위한 직무배태성 향상방안으로 급여향상, 전문성 계발 및 승진기회 제공 등 간호사를 지원하는 간호근무환경 조성과 함께, 간호 팀 내 또는 타 보건의료 전문인과의 협력관계 유지를 위해 병원과 간호조직 차원의 제도 개선이 필요함을 시사한다.

• 한국지리정보학회지
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• 제19권4호
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• pp.1-16
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• 2016

우리나라는 2000년대 이후 급속한 경제성장 시대를 지나 보다 안정된 경제성장 시대에 접어들면서 국토와 도시의 발전형태도 변화하고 있다. 대규모 신개발의 필요성은 점차 감소하는 가운데 도시 외곽에서 파편화된 소규모 개발이 진행되는 한편, 기존 도시 내에서 유휴화 되는 공간이 증가하고 있다. 따라서 기존 도시의 압축적 이용을 위해 이러한 유휴공간에 대한 효율적 이용이 필요한 실정이다. 그러나 이를 위해서는 무엇보다 도시내부에 존재하는 다양한 유휴공간을 체계적으로 파악하고 관리할 수 있는 과학적 방법과 수단이 필요하다. 본 연구는 이와 같은 배경 하에 다음과 같은 목적을 가지고 수행하였다. 첫째, 유휴공간을 체계적으로 파악하기 위한 분석모형을 실험개발하고 부산시를 대상으로 실증연구를 수행하고자 한다. 둘째, 오픈소스 GIS 소프트웨어인 uDig을 활용하여 유휴공간 분석시스템을 실험 구축하고자 한다. 공간적 문제의 파악과 해결을 지원하기 위해 GIS기반의 공간의사결정지원체계나 계획지원체계를 구축하여 활용하는 것은 새로운 시도는 아니다. 그러나 최근 발전하고 있는 오픈소스 GIS를 활용할 경우 기존의 독점적 소프트웨어를 사용하는 것과는 차별화된 장점이 있다. 본 연구는 상기와 같은 내용을 기반으로 향후 국토도시에 존재하는 유휴공간을 체계적으로 파악하고 활용하기 위한 오픈소스 기반의 계획지원체계를 구축하는데 필요한 시사점을 제시하였다.