• Journal of the Korea Society of Computer and Information
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• v.15 no.11
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• pp.41-45
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• 2010

Image processing techniques are fundamental in human vision-based image information processing. There have been widely studied areas such as image transformation, image enhancement, image restoration, and image compression. One of research subgoals in those areas is enhancing image information for the correct information retrieval. As a fundamental task for the image recognition and interpretation, image enhancement includes noise filtering techniques. Conventional filtering algorithms may have high noise removal rate but usually have difficulty in conserving boundary information. As a result, they often use additional image processing algorithms in compensation for the tradeoff of more CPU time and higher possibility of information loss. In this paper, we propose a Fuzzy Mask Filtering algorithm that has high noise removal rate but lesser problems in above-mentioned side-effects. Our algorithm firstly decides a threshold based on fuzzy logic with information from masks. Then it decides the output pixel value by that threshold. In a designed experiment that has random impulse noise and salt pepper noise, the proposed algorithm was more effective in noise removal without information loss.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.241-249
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• 2010

The purpose of this study is to provide basic information for marketing strategy for hospitals in Busan Metropolitan area by investigating of the web-site management and effect on hospital management about the web-sites managers. Survey of 53 web-site managers was taken between May 1st and May 25th 2008. The survey was carried out to gather information about characteristics of web-site managers and creating, managing and operating process of web-sites and web-sites' effect and information sharing abilities. The results of survey are as follows. First, most of hospitals' web-sites were launched between 2001 to 2005 via outsourcing. Most of hospitals spent about one to three million won for their web-sites and renew web-sites every year. Most of these web-sites have hospital PR, Q&A, and on-line support functions. Second, most of whom participated in survey have agreed that a hospital web-site has influence in hospital management in various categories such as introducing hospital to medical examination, making doctor's appointment, providing patient guidance, providing medical information, and patient counselling. This study shows that effects of web-sites are closely related to web-site satisfaction level. Therefore, to raise the hospital satisfaction level, it is necessary for hospitals to put more efforts in creating web-site that provides more medical information and improved on-line services.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.31-37
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• 2016

Ranging is divided into a synchronous scheme and an asynchronous scheme according to the presence of global synchronization between nodes. In general, the asynchronous ranging is preferred over synchronous ranging because it does not require an expensive high-precision oscillator for the global synchronization. On the other hand, in a conventional asynchronous ranging scheme, the packets, which are generated by all nodes in a positioning system of a large-scale infrastructure and need to be sent for localization by reference nodes, are considerable, which cause an increase in network traffic as the number of nodes increases. The traffic congestion lowers the throughput of the network leading to a considerable loss of energy. To solve this problem, this paper proposes a ranging scheme, in which virtual transmission slots randomly and discretely selected by a plurality of nodes are used to reduce the overheads needed in synchronizing the nodes, and the ranging is performed asynchronously based on the virtual transmission slots, thereby decreasing the network traffic. In addition, a performance test proved that the proposed ranging scheme was stronger than the TWR and SDS-TWR on an error range, even though the intensity of traffic was very low.

• Journal of radiological science and technology
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• v.40 no.1
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• pp.35-40
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• 2017

The purpose of this study was to investigate the relationship between abdominal subcutaneous fat thickness(ASFT) and maternal gestational diabetes mellitus(GDM) measured by ultrasound at period of pregnancy. We compared maternal age, pre-pregnancy body mass index, and weight gain during pregnancy in 286 pregnant women who were diagnosed with early pregnancy ASFT and high GDM screening test(50 g OGTT) of more than 140 mg/dL. ROC curve analysis was used to determine the cut-off value of ASFT for GDM prediction. Maternal age and weight gain during pregnancy were not related to GDM in the mid-trimester and pre-pregnancy body mass index and earely pregnancy ASFT were significantly different between normal and GDM high risk groups. The cut-off value of ASFT for GDM prediction was 2.23 cm(AUC 0.913. Sensitivity 76.19%, Specificity 93.72%). ASFT measured by ultrasound in early pregnancy was useful as an important index for predicting mid-trimester GDM prediction. Therefore, ASFT can be used as an auxiliary diagnostic index for early recognition of GDM.

• Journal of Hospice and Palliative Care
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• v.16 no.2
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• pp.98-107
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• 2013

Purpose: This study was conducted to investigate how home-based hospice care is provided in Korea. Methods: From July 2011 through August 2011, 29 hospice facilities that provide home-based hospice care were surveyed using a questionnaire. Items included in the questionnaire were general characteristics of the organization, staff members, service programs, difficulties. Results: Among the surveyed, hospice care was hospital-based for 11 (37.9%) facilities, hospital-independent center-based care for four (13.8%) and home-based care only for 10 (34.5%). Near half the participants were located in Seoul and Gyeonggi-do. Caregivers included nurses for 62.1% of the participants, volunteers 62.0%, pastors 44.8%, social workers 37.9%, coordinators 31.0% and doctors 31.0%. The facilities offered service programs such as family counseling (96.6%), transfer to other facilities (93.1%), psychological support (89.7%), bereavement support (86.2%), dying care (79.3%), clinical care (75.9%) and spiritual support (75.9%). The major obstacles were financial issues (24.1%), lack of trained staff (20.7%) and staff members' lack of awareness of home-based hospice care (13.8%). Conclusion: In Korea, home-based hospice care is provided by an insufficient number of facilities. Moreover, the service providers are experiencing difficulties such as lack of trained staff, insufficient financial resource and staff's lack of awareness of home-based hospice care. It is necessary to increase the number of home-based hospice care facilities with consideration of even distribution across regions and standard staffing and service programs and develop related insurance policies.

• Proceedings of the KOR-KST Conference
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• 1998.10a
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• pp.510-519
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• 1998

사회전반에 걸친 물류단지의 필요성에 대한 인식은 날로 높아지고 있으나, 물류단지의 입지를 정작 어느 곳으로 할 것인가에 대한 연구는 거의 없는 실정이다. 본 논문에서는 물류단지의 입지를 결정하는 여러 요인들 중 일반적으로 계량화 작업이 많이 이루어진 수송비와 ,대규모 개발 사업시 가장 먼저 고려해야 하는 토지보상비를 결정하는 지가를 물류단지의 입지를 결정하는 입지비용이라 가정하고, 현재 화물수송이 가장 많이 이루어지고 있는 경부고속도로축을 중심으로 입지비용을 결정하는 지가와 소송비의 산출을 위한 근거를 제시하며, 이를 설명할 수 있는 지가와 수송비의 모형을 지가와 수송비의 산출을 위한 근거를 제시하며, 이를 설명할 수 있는 지가와 수송비의 모형을 개발하여, 이 모형을 토대로 물류단지의 규모와 서울도심에서의 거리의 변화에 따라 물류단지의 입지가 어떻게 변화하는 가를 밝혀, 물류단지의 최적입지를 제시하는데 그 목적이 있다. 본 논문의 결론을 요약하면 다음과 같다. 1) 물동량의 증가에 따라 수송비가 증가하고, 물동량을 처리하기 위한 소요부지면적이 증가하면, 지가와 수송비의 교차구간은 도심에서약 15~20km 떨어진 구간에서 형성되고, 이 때의 최적입지는 물동량과 소요부지면적에 상관없이, 도심에서 약 60km 떨어진 안성군 및 평택시지역(경부고속도로 주변지역에 한함)이 최적입지로 분석되었다. 2) 수송비와 지가, 건설비와의 장래 20년을 기준으로 한 누적비용분석결과 0~40km 구간의 경우 수송비의 누적비용이 지가와 건설비의 누적비용을 초과하지 않으며, 수송비의 누적비용이 지가와 건설비의 누적비용을 초과하는 기간이 가장 빠른 것은 물류단지가 50~55km 구간과 60~65km 구간에 입지 하였을 경우로, 이 구간에서의 수송비 누적비용이 지가와 건설비의 누적비용을 초과하는 기간은 9년 후인 2004년으로 분석되었다. 이는 도심과 인접한 지역의 경우 물류단지가 입지하지 못하는 것은 물류단지의 건설에 따른 수송비의 절감이 물류단지 건설에 따른 지가 및 건설비에 대한 비용부담에 못 미치기 때문인 것으로 분석되었으며, 화물의 특성상 불가피하게 도심지역과 가까운 곳에 물류단지의 입지를 고려해야 할 경우, 물류단지 조성시 정부에서의 세금완화, 물류단지 조성가능지역 설정, 지가에 대한 보조 등 정책적인 지원대책이 필요할 것으로 판단된다. 3) 입지 비용중 수송비를 누적시킨 수송누적비용과 지가와의 비교분석결과 수송비를 5년, 10년 누적시켰을 때 이 물류단지의 최적입지는 도심에서 약 60km떨어진 곳으로 분석되었으며, 수송비를 20년 누적시켰을 경우 물류단지의 최적입지는 도심에서 약 50km떨어진 지점의 물류단지의 최적입지로 분석되었다.

• Journal of the Korean Society for Library and Information Science
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• v.54 no.2
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• pp.127-154
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• 2020

This study recognizes the need for Korean university society to have to prepare for the coming of the Fourth industrial revolution era and for rapid decline in the school-age population, and presents a diagnosis of the current situation of the department of domestic library and information science. To respond to such issues, it explores the identity of the department of library and information science, and the future development direction thereof. The findings of this study reveal as of February 2020 that 36 universities offer the department of library and information science, while 18 universities abolished the department. Further, compared to 2013, 2019 saw the number of the students enrolled and full-time faculty decline by 38.5% and 13.4%, respectively. Thus, the identity and future development direction of Korea's department of library and information science were examined by dividing the issue into 5 parts. Five proposals thus were presented: First, convergence education is required at the level of academic identity. Second, at the level of law and state, the department of library and information science, it should be guaranteed that the library and information science should be promoted and that the employment should be stabilized. Third, at the level of association, the social image of the department of library and information science should be enhanced. Fourth, at the level of universities, the support for and promotion of the department of library and information science should be boosted. Fifth, at the level of the department, student-oriented education should be bolstered and the employment rate should be enhanced.

• Korean Journal of Construction Engineering and Management
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• v.14 no.4
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• pp.130-139
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• 2013

Construction accident rates are reflected in the pre-qualification of public construction projects in order to prevent accidents and facilitate the safety management of construction companies. However, the construction industry is still experiencing an increase in accident rates. Hence, there is a need to strengthen existing safety evaluation systems and requirements in public construction tendering. The objective of this study was to acquire and provide basic data for benchmarking to select tenderers in domestic public construction projects. In Singapore and Japan, safety evaluation systems and requirements are applied based on various aspects in order to screen tenderers. These evaluation systems include safety regulations and institutional requirements, as well as safety performance and safety management plans of respective construction projects. This study recommends that korean public construction projects also apply similar safety evaluation systems which include comprehensive safety criteria in order to decrease accident rates in the industry.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1987.05a
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• pp.15.2-16
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• 1987

사성이란 후두의 발생기능에 장애가 있을 때 생기는 후두질환의 가장 대표적인 주증상으로 인간 문화의 발달에 병행되어서 대화에 의한 전달수단이 중요시되고 또한 암에 대한 인식이 높아져 사성을 호소하는 환자들이 많아지는 경향이 있다. 이에 저자는 1980년 1월부터 1984년 12월까지 이화여자대학교 의과대학 부속병원 이비인후과 외래에 내원한 신외래환자 총 24,949명 중 사성을 주소로 한 800명의 환자에 대하여 병력지를 기준하여 각 질환을 통계적으로 분석 검토하여 다음과 같은 성적을 얻었다. 1) 이비인후과 외래환자 총 24,949명중 사성환자는 800명으로 약 3.2%이었다. 2) 외래사성환자 800명중 남자 336명, 여자 464명으로 남녀비는 약 1 : 1.4이었다. 3) 질환별로는 급성 후두염 248예(31.0%), 만성 후두염 186예(23.3%), 성대결절 160예(20.0%), 성대폴립 90예(11.3%), 성대마비 56예(7.0%), 후두 유두종 12예(1.5%), 후두암 9예(1.1%)이었다. 4) 연령별로는 30대가 213예(26.6%), 20대가 190예(23.8%), 40대가 179예(22.4%)의 순이었다. 5) 각 질환별 최다연령은 급성 후두염 30대 73예(29.4%), 만성 후두염 30대 53예(28.5%), 성대결절 30대 52예(32.5%), 성대폴립 40대 26예(28.9%), 성대마비 40대 14예(25.0%), 후두암 50대 6예(66.7%)이었다. 6) 발병부터 초진까지의 기간은 10일 이내가 153예(19.1%)로 제일 많았고 1개월∼3개월 138예(17.3%), 11일∼l개월 119예(14.9%)의 순이었다. 7) 각 질환에 따른 발병부터 초진까지의 기간의 최다분포는 급성 후두염은 10일 이내가 117예(47.2%), 만성 후두염은 3개월∼6개월이 44예(23.7%), 성대결절은 3개월∼6개월이 40예(25.0%), 성대폴립은 6개월∼1년이 20예(22.2%), 성대마비는 10일이내가 12예(21.4%)이었다. 8) 질환별 동반증상 분포는 사성만을 호소한 경우가 394예(41.4%)로 가장 많았고 동반증상으로는 인두통, 이물감, 객담, 기침, 연하장애, 호흡곤란의 순이었다. 9) 저자의 연도별 사성환자의 평균발생빈도(3.2%)를 문(1981)의 1975년 1월부터 1979년 12월(만 5년간)까지의 평균발생빈도(2.9%)와 비교할 때 증가하였다.

• Journal of dental hygiene science
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• v.17 no.6
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• pp.472-480
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• 2017

The purpose of this study was to investigate Staphylococcus epidermidis contamination on hands of 20 dental hygienists and 140 equipment surface of 20 dental clinics in a local area, from July to August 2017. The degree of S. epidermidis contamination was measured using a hand plate and a rodac plate and then cultured at $35^{\circ}C$ for 24 hours. Based on hand plate criteria, hand contamination was classified into low, middle, and high groups. Analysis of the variance (ANOVA) of the contamination level of the hand parts of the group surface contamination level of the dental clinic equipment was descriptive statistics after clustering lock count. S. epidermidis contamination was moderate in 55% of the hands of dental hygienists. The area of contamination was 29.45 colony-forming units (CFU) on the palm, followed by the middle finger 7.8 CFU, ring finger 6.4 CFU, and thumb 6 CFU. Medical equipment surface contamination was showed that 3-way handle 4.45 CFU, computer mouse 3.37 CFU, mirror handle 1.60 CFU were higher than other areas. The group with high hand contamination had a high positive correlation with the S. epidermidis contamination of the hand. S. epidermidis contamination level was higher on hands than on the medical equipment surface contamination. Therefore, medical staff should recognize the importance of hand hygiene which should be practiced in the manner suggested by World Health Organization. In addition, the medical team needs to be responsible for performing infection control tasks, implementing infection management guidelines and providing systematic education on infectious disease management.