• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.540-545
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• 2010

2009년 3월 19일 도시철도차량의 내구연한 관련 법령이 개정되면서 도시철도차량이 최장 40년까지 사용 가능하게 되었다. 이는 차량제작 기술의 발전과 더불어 소재와 부품의 품질 향상으로 내구성이 우수해졌고 체계적인 관리와 노후 부품의 교체 등으로 도시철도 차량의 수명이 길어졌기 때문이라고 판단된다. 도시철도 차량의 안전은 승객의 안전과 직접적인 관계가 있으므로 안전성을 최우선적으로 고려하여야 하며 내구연한 연장을 위해서는 더욱 정밀한 안전 검정이 필요하다. 이에 내구연한이 도래한 전동차는 개정된 "도시철도차량의 정밀진단지침"에 따라 정밀진단을 실시하여야 한다. 본 연구는 내구연한 연장 관련 법령 개정 이후 최초로 정밀진단을 시행하고 있는 부산교통공사의 사례를 통해 정밀진단 시행기관과 도시철도 운영기관에 정밀진단에 대한 진단기법의 방향을 제시하고자 한다.

• Tuberculosis and Respiratory Diseases
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• 제77권5호
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• pp.203-208
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• 2014

Background: In this study, we investigated whether lobetyolin, lobetyol, and methyl linoleate derived from Codonopsis pilosula affect MUC5AC mucin secretion, production, and gene expression from airway epithelial cells. Methods: Confluent NCI-H292 cells were pretreated with lobetyolin, lobetyol, or methyl linoleate for 30 minutes and then stimulated with phorbol 12-myristate 13-acetate (PMA) for 24 hours. The MUC5AC mucin gene expression, and mucin protein production and secretion were measured by reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. Results: Lobetyolin, lobetyol, and methyl linoleate inhibited the gene expression of MUC5AC mucin induced by PMA; lobetyolin did not affect PMA-induced MUC5AC mucin production. However, lobetyol and methyl linoleate inhibited the production of MUC5AC mucin; lobetyolin and lobetyol did not significantly affect PMA-induced MUC5AC mucin secretion from NCI-H292 cells. However, methyl linoleate decreased the MUC5AC mucin secretion. Conclusion: These results suggest that among the three compounds, methyl linoleate can regulate gene expression, production, and secretion of MUC5AC mucin by directly acting on the airway epithelial cells.

• IMMUNE NETWORK
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• 제8권2호
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• pp.59-65
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• 2008

Background: Toll-like receptors (TLRs) detect microbial infection and can directly induce innate host defense responses, which are thought to play critical roles in protecting the tubotympanum from infection. However, little is known about the relationship between TLRs, which are related to innate immunity, and immunoglobulins, which are related to adaptive immunity, in recurrent otitis media with effusion (OME). We therefore investigated the expression of TLR2 and TLR4 and immunoglobulin in children with OME. Methods: The study population consisted of 72 children with OME, 31 with more than 4 episodes in 12 months or more than 3 episodes in 6 months (otitis-prone group), and 41 with fewer than 3 episodes in 12 months (non-otitis prone group). The expression in middle ear effusion of TLR2 and TLR4 mRNA, as determined by Real time- -polymerase chain reaction (RT-PCR), and the concentrations of IgG, IgA, and IgM, as determined by Enzyme-linked immunosorbent assay(ELISA), were compared between the two groups. Results: Expression of TLR2 and TLR4 mRNA was lower in the otitis prone than in the non-otitis prone group, but the difference was not statistically significant (p>0.05). Between group differences in the concentrations of IgG, IgA and IgM in effusion fluid were not significant (p>0.05), and there were no correlations between immunoglobulin concentration and the expression of TLR2 and TLR4. Conclusion: Although there was a trend toward lower expression of TLR2 and TLR4 in the otitis-prone group, the differences, and those in immunoglobulin concentration, did not differ significantly between the otitis-prone and non-prone groups.

• 한국IT서비스학회지
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• 제16권2호
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• pp.111-127
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• 2017

Computing Performance, sensor, storage, memory, and network costs have been steadily declining, and IoT services have recently become more active. The Internet of Things is linked with Big Data to create new business, and public institutions and corporations are hurry to import Internet of things. As the importance of the Internet of things has increased, the number of devices supporting the IoT has rapidly increased. With the development of the Internet of Things, various types of Internet services are being developed. For this reason, there is an increasing demand for IoT service designers and developers for IoT service case automatic search technology. IoT service designers can avoid duplication with existing services through service case retrieval and developers can save cost and time by combining existing reusable service equipment. This paper proposes IoT-Lite ontology for IoT and Semantic Web service to solve the above-mentioned problems. The existing ontologies for IoT, despite its many advantages, are not widely used by developers because it has not overcome the relatively slow drawbacks of increasing complexity and searching for development. To complement this, this study uses the IoT-Lite ontology introduced by W3C as a model and a semantic web service for automatic system retrieval. 3D camera, GPS, and 9-axis sensor, and IoT-Lite designed by IoT-Lite technique are integrated with the semantic technique and implemented directly.

• 대한임상검사과학회지
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• 제36권1호
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• pp.38-42
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• 2004

Because of the lack of resources on the importance of cell block, the diagnosis of cytologic specimen has been overlooked. Out of 1,243 cases of non-gynecologic cytology specimen, about 87.1% has been proven to be diagnostically useful. About 0.9% of those were rendered diagnostic by cell block alone. If cell block was not made it could have resulted in misdiagnosis. The effect on making cell block might not be directly linked to the patient but to the pathologist, it can be a helpful secondary tool in lowering the chance of giving false negative results hence. Giving the patient the opportunity of an adequate treatment. This study has proven that cell block has diagnostic value in non-gynecologic cytology. We are doing our best to increase the production rate of cell block and to improve the quality of cytology smears and cell block, so that we can increase the accuracy of diagnosis.

• 가족자원경영과 정책
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• 제19권1호
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• pp.139-161
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• 2015

The number of Healthy Family Support Centers has increased and the services for enhancement of family strength have extended during the past ten years since the Framework Act on Healthy Families was enacted. It is time to pay attention to the empowerment for Healthy Family Specialist because their capability is directly linked to improve the quality of services, which means the satisfaction of family services and the quality of family policy. In this context, this study investigate organizational experience of Healthy Family Specialists and suggest the empowerment plan to enhance their capability. We conducted in-depth interviews for 9 Healthy Family Specialists who is currently working at Healthy Family Support Centers as a manager status during June 2014. We analyzed organizational experiences through job commitment and job satisfaction and empowerment plans through their strength and weakness. Our findings revealed that job commitment and job satisfaction of Healthy Family Specialist are relatively low due to a poor working condition and a low brand awareness. Also, the capability of Healthy Family Specialists is an important factor to determine their job commitment and job satisfaction, and it can impact on the long service. These results suggest that the payroll system, increment of salary, career recognition, employee benefit, systematic operation, and motivation are needed to improve their job satisfaction. There are various ways to improve professional capability of Healthy Family Specialists besides education program. This study contributes to make the plan of empowerment for Healthy Family Specialists and it also contributes to improve the service quality of family policy.

• 한국산학기술학회논문지
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• 제16권11호
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• pp.7893-7901
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• 2015

공용중인 교량의 보다 안전하고 효율적인 유지관리를 위해서는 시간에 따른 교량 유지관리 정보의 수집과 분석이 중요하다. 교량관리시스템을 통한 안전하고 경제적인 관리를 위한 전략 수립의 기본이 되는 현장조사 정보의 신뢰도 및 획득의 편의성을 증진하기 위하여 교량 현장조사용 스마트폰 응용프로그램을 개발하고, 실 적용성을 확보하였다. 개발된 프로그램은 교량의 생애주기관리를 위한 교량관리시스템과 연계되어 유지관리 관련 정보의 조회, 수정, 전송 등이 실시간으로 가능하며, 현장조사 보고서의 자동 작성을 통해 업무를 크게 경감할 수 있을 것으로 판단된다. 본 프로그램을 이용한 점검은 편의성, 정확성 등의 향상, 정보의 지속가능성, 향후 활용성 등 직간접적으로 기대되는 가치향상 효과가 기존의 점검방법에 비해 매우 높을 것으로 기대된다.

• 정보처리학회논문지D
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• 제16D권5호
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• pp.683-690
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• 2009

소셜 네트워크(Social Network)는 웹 환경에서 개인 중심의 네트워크로 구성되어 웹 사용자별 프로파일을 탐색하고 새로운 연결을 형성함으로써 정보의 소통을 지원한다. 따라서 유사한 내재적 정보를 가진 웹 사용자들로 구성 된 소셜 네트워크를 찾아서 검색에 적용한다면 검색의 효율성과 검색 결과에 대한 웹 사용자의 만족도를 향상 시킬 수 있다. 본 논문에서는 첫째, 웹 사용자간 직접 또는 간접적인 연결로 구성된 소셜 네트워크를 구성 한다. 둘째, 사용자들의 속성(Feature)에 내재된 정보를 이용하여 주제(topic)별 웹 사용자 간 유사성(Similarity)을 산정한 후, 주제(Topic)별 변화되는 유사성에 따라 소셜 네트워크를 재구성한다. 마지막으로 산정된 유사성과 웹 사용자들의 검색결과에 대한 만족도, 즉 검색 패턴(Search Pattern)을 비교 실험 한다. 실험 결과 주제별 유사성이 높은 웹 사용자 간에는 검색 패턴 또한 유사함을 확인 하였다. 이와 같은 사실을 검색에 적용한다면 개인화 검색(Personalized Search) 및 소셜 검색(Social Search)의 효율성 및 신뢰성 향상에 기여 할 수 있다.

• 대한원격탐사학회지
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• 제24권6호
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• pp.613-620
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• 2008

Web 2.0 패러다임에서 사용자는 웹에 접속함으로써 개인용 컴퓨터에서 특정 어플리케이션을 실행하는 것과 같이 동일한 기능을 수행할 수 있다. 이와 같이 플랫폼으로서의 웹을 위해서는 웹 상에서 다양한 자원과 어플리케이션들 간에 서로 데이터를 교환하고 공유할 수 있는 웹 기반 자료 포맷이 필요하다. 문자형 정보에 대한 JSON은 Javascript로 직접 처리가 가능한 실용성을 강조한 포맷이므로 기존의 XML 유형 데이터는 JSON 포맷을 포함하는 태그 처리가 가능하다. 그러나 지 공간정보를 다루는 GeoJSON은 현재 개발 진행중이고 표준화 초기 단계이므로 현 단계에서의 적용성에는 제한점들이 있고 이를 다룰 수 있는 툴이나 공개 프로그램도 그리 많지 않은 상황이다 따라서 공간 웹 서비스 개발에서 웹 서비스 간의 지공간자료 전송 및 상호 교환 목적으로 GeoJSON 포맷을 적용하기 위해서는 직접 GeoJSON Parser를 구현하거나 이와 같은 기능을 부분 지원되는 서버 기반의 공개 소스를 이용하는 것이 바람직하다. 본 연구에서는 공개형 웹 매핑 API인 Google Maps API와 Openlayers 라이브러리 API를 이용한 설계 및 구현을 통하여 지공간 정보 웹 서비스에서 GeoJSON을 웹 기반 공간 정보 자료 포맷으로 활용할 수 있는 기반 연구를 수행하고 향후 확장 가능성을 검토하였다.

• 농촌계획
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• 제24권4호
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• pp.37-46
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• 2018

The nonpoint pollution source (NPS) is irregular in the amount of generated and runoff. About 70% of the water pollution sources in Korea are NPS. Most of the rural areas are small towns with less than 50 families. This is where sewerage supply is poor. This is where the domestic swage of the house flows directly into the small stream. This study investigated the amount and concentration of domestic swage. And investigated NPS for public officials. We have suggested an improvement plan here. Local government officials lack the concept of NPS. Rural residents also do not know about NPS. Therefore, we proposed NPS public relations and education linked to public administration. This is an extension of the national budget and interest. The domestic swage is discharged at about 272 liters per day in a house. We proposed the introduction of small facilities. If the capacity remains, it is suggested to link to cattle shed, pigsty and so on. The BOD, COD, TN, TP, and SS concentrations were all high. This suggested a reduction in concentration in combination with natural water. Finally, NPS facilities were proposed to be put into rural areas. And it was determined that continuous monitoring was necessary. The results of this study were expected to be applied to NPS management.