• Journal of the Korean Data and Information Science Society
• /
• 제22권5호
• /
• pp.989-998
• /
• 2011

Cloud computing provides computation, software, data access, and storage services that do not require end-user knowledge of the physical location and configuration of the system that delivers the services. Cloud computing providers have setup several data centers at different geographical locations over the Internet in order to optimally serve needs of their customers around the world. One of the fundamental challenges in geographically distributed clouds is to provide efficient algorithms for supporting inter-cloud data management and dissemination. In this paper, we propose a group quorum system (GQS)-based dissemination for improving the interoperability of inter-cloud in time-critical event dissemination service, such as computing policy updating, message sharing, event notification and so forth. The proposed GQS-based method organizes these distributed clouds into a group quorum ring overlay to support a constant event dissemination latency. Our numerical results show that the GQS-based method improves the efficiency as compared with Chord-based and Plume methods.

• Journal of the Korean Wood Science and Technology
• /
• 제39권5호
• /
• pp.444-450
• /
• 2011

The goal of this study is to investigate bending properties of domestic timber. Three representative structural timber from Larix kaempferi, Pinus koraiensis, and Pinus densiflora, in the northeastern South Korea were selected. Visual grading for the timber was conducted based on KFRI notification 2009-01 and the bending strength for the timber was evaluated based on ASTM D 198 bending. The high percentage of grade 1 and 2 for Larix kaempferi shows that the KFRI notification was optimized for this species. The bending strength distributions from Pinus koraiensis and Pinus densiflora were very similar. It could be possible to specify the allowable bending properties of these two Specification using a united species group similar to spruce-pine-fir. Lastly, the bending strength of $120{\times}180mm$ structural members was higher than both existing values in KBC 2009 and design values for timber of imported species described in the NDS. Thus, 120 mm thick domestic softwoods could replace the commercial imported species and the KBC should be modified to provide design values for both timber and dimensional lumber, respectively, like NDS.

• 한국병원경영학회지
• /
• 제22권4호
• /
• pp.50-60
• /
• 2017

Purposes: The purpose of this study was to identify the preferred types of the hospital reservation cancellation management to help reduce the reservation cancellations. Methodology: This study sampled 327 outpatients or their guardians who had reserved a university hospital and a general hospital located in the southwestern part of Seoul, and the responses from 300 of them were used for the final analysis. The subjects' preferences of reservation cancellation management types were analyzed in reference to their demographic variables. The timing and frequency of pre-notification preferred by the subjects were examined. A multidimensional scaling methods and correspondence analysis was used to identify preference for management methods of no-show and type of reservation guide. Findings: As a result, 77.3% of the respondents were perceived that the reservation cancellation was a habit. The most preferred method of managing the reservation cancellation would be refusal to refund the reservation deposit (61.7%), followed by payment for cancellation (16.0%), limit of future reservations (16.0%) and penalty (6.3%) in their order. 186 of the subjects (62.0%) preferred the texting for prevention of reservation cancellations, and 102 of the subjects (34.0%) preferred the phone calls. The preferred timing and frequency of the SMS were twice 3 days before, once a day before and three times 7 days before, while the preferred timing and frequency of phone call was once a day before. Practical Implications: The no-show rate can be improved by enhancing SMS pre-notification and by improving afterwards telephone counseling. For other factors, it needs to study on the service differentiation with the characteristics of each patient group.

• Tuberculosis and Respiratory Diseases
• /
• 제82권3호
• /
• pp.194-200
• /
• 2019

Background: Tuberculosis (TB) is a major infectious disease in South Korea causing substantial disease burden, particularly in the elderly. This study aimed to identify the case detection rate of mobile TB screening for the elderly conducted in the Jeollanam-do region and to analyze risk factors of active TB. Methods: We screened the elderly population (${\geq}65$ years old) in Jeollanam-do from August to December 2017. Chest radiography was performed for all participants. Participants with TB presumptive signs were asked to submit sputum specimen(s). Sputum smear, culture, and polymerase chain reaction analyses were performed. Cascade analysis, chi-squared tests, and Fisher exact tests were used to evaluate screening performance. Results: In total, 12,402 participants were screened, and 211 (1.7%) were suspected to have active TB; 181 of the suspected patients (85.8%) underwent sputum smear test, and 16 (8.8%) patients were confirmed to have TB. The TB prevalence among the elderly was bacteriologically confirmed to be 129 per 100,000 individuals, which was similar to national TB notification data for the same age groups. The proportion of active TB cases increased with age, and differed based on sex and past TB history. However, TB-related symptoms, comorbidity status, and TB screening history within 12 months were not predictive of active TB. Conclusion: This study identified that the prevalence rate was similar to national TB notification data from the same age groups. Periodic, community-based, systematic TB screening among the elderly population is recommended.

• 한국의학물리학회지:의학물리
• /
• 제26권4호
• /
• pp.294-303
• /
• 2015

미국의학물리학회는 포괄적인 방사선치료기기의 품질관리를 위한 작업그룹(Task Group: TG) 40 보고서를 1994년 발표한 이후로 세기조절방사선치료, 정위적방사선치료, 및 영상유도방사선치료 등의 고정밀 방사선치료를 포함한 선형가속기에 대한 품질관리를 권고하기 위해 2010년에 AAPM TG-142를 발간하였다. 그리고 최근 국내에서도 최신 치료기법에 대한 품질관리의 필요성에 따라 원자력안전위원회는 원자력안전위원회고시 제2015-005호 "의료분야의 방사선안전관리에 관한 기술기준"을 발표하였다. 원자력안전위원회고시에는 각 의료기관에서 품질관리전문인력을 두어 품질관리 조직 및 직무, 품질관리에 필요한 장비, 품질관리 방법/주기/관리오차 및 관리오차 초과 시 조치방법 등에 대한 내용이 포함된 품질관리절차서를 수립하고 품질관리를 수행하도록 규정되어 있다. 이에 따라 의료기관에서는 3차원 입체조형방사선치료, 세기조절방사선치료, 정위적방사선치료 등과 같은 방사선치료유형별(Non-IMRT, IMRT, SRS/SBRT)로 방사선치료기기에 맞는 품질관리 항목, 주기 및 관리오차를 설정하고, 적절한 품질관리 장비 등을 사용하여 기관의 실정에 맞게 품질관리를 수행하여야 한다. 그러나 국내에는 선형가속기의 체계적인 품질관리를 구축할 수 있는 지침서나 학회 보고서 등이 미비하여 현재 각 의료기관별로 각기 다른 품질관리의 항목, 주기 및 관리오차를 설정하여 품질관리를 수행하고 있는 실정이다. 그러므로 본 논문에서는 방사선치료의 안전성 및 정확성을 확보하기 위해 원자력안전위원회 고시 및 TG-142에 기반한 국내 실정에 적합한 선형가속기에 대한 품질관리체계 구축 방안 등을 제안하였다. 제안된 선형가속기에 대한 품질관리 체계는 다른 고정밀 방사선치료기기 등의 품질관리 체계 구축에도 도움이 될 것으로 사료된다.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 1998년도 추계종합학술대회
• /
• pp.450-455
• /
• 1998

This paper proposes an enhanced transport protocol for multipeer communications. It is assumed that there exists a transport connection owner that takes the roles of the establishment, management and termination of a transport connection. The proposed protocol classifies the data transfer type into simplex, duplex and N-plex multicasts and provides several transport services to support various requirements in group communications. The general operations and reliability controls of each transfer type are different from one another and carried out by a shared control tree. The QoS negotiation is performed during the creation phase. The notification of negotiated values is followed by an acknowledgment procedure for confirmation. The four-way handshake is introduced. After negotiation, such a resource reservation protocol as RSVP can reserve system and network resources according to the arbitrated values. This paper suggests a conceptual model of the transport layer and its protocol behaviors over the IP multicast and RSVP network.

• 한국컴퓨터정보학회:학술대회논문집
• /
• 한국컴퓨터정보학회 2018년도 제58차 하계학술대회논문집 26권2호
• /
• pp.187-188
• /
• 2018

현재 안심 귀가 서비스는 주로 여성, 자녀, 택시를 대상으로 하지만 단체를 위한 귀가 서비스는 존재하지 않는다. 현재 서비스되고 있는 안심 귀가 어플들은 1:1이며 이 경우 인원수만큼 연락을 해야 하는 문제가 있다. 본 논문에서는 이동하기 전 그룹을 설정하여 사람들의 귀가 여부, 집까지 소요시간, 이동 수단 정보를 알 수 있고 목적지에 도착하지 않았을 때 그룹원들에게 알림을 줌으로써 범죄의 가능성을 줄이고 안전하게 귀가하는 서비스를 제안하고자 한다.

• 정보처리학회논문지D
• /
• 제15D권3호
• /
• pp.411-420
• /
• 2008

본 논문에서는 헬스케어 홈 서비스를 위해 가정 내에 설치된 센서/기기로부터 수집된 위치, 건강 그리고 쾌적환경 정보를 이용하여 유비쿼터스 헬스케어를 지원하는 u-헬스케어 상황정보 시스템(HCIS)을 구현했다. HCIS는 분산자원의 맞춤형 관리모델인 분산객체그룹프레임워크(DOGF)를 기반으로 헬스케어 홈 환경에서 다양한 상황정보, 응용 그리고 장치들을 논리적인 하나 또는 그 이상의 단위로 그룹화하고 관리한다. 또한 본 시스템은 DOGF의 구성요소인 모바일프락시와 컨텍스트제공자를 통해 가정 내 거주자의 위치를 기반으로 연속적인 헬스케어용 멀티미디어 서비스를 지원하고, 거주자에게 필요한 상황정보를 제공한다. 본 시스템의 수행성을 검증하기 위해 홈 내에서 제공되는 헬스케어 응용으로 거주자 위치기반의 끊임없는 멀티미디어 서비스와 처방 주의 및 스케줄 알림/알람 서비스를 구현했다. 그리고 시나리오에 따라 거주자가 위치한 영역의 서비스 장치를 통해 헬스케어 홈 서비스의 수행결과를 보였다.

• Journal of Preventive Medicine and Public Health
• /
• 제26권4호
• /
• pp.541-550
• /
• 1993

In order to investigate psychological and behavioral characteristics of homosexuals and to present evidence that homosexuals are in danger of HIV infection in Korea, this study was done by self-administered questionnaire and then direct interview with the 28 (35%) HIV infected homosexual/bisexuals of 79 HIV infected persons reported in 1992. Homosexuals without heterosexual activity were 9 and the others were bisexuals. Sixty-five percent of respondents had a guilty conscience for their homosexual activty. Twenty (71%) were in twenties and 5 (18%) in thirties. Twelve(43%) were detected via health card checking by health office, 21% by blood donation, 18% by hospital visit, and 7% by partner notification. Motivations for homosexual activity were curiosity (36%), temptation or recommendation (14%) and compulsion (11%). Eighteen (72%) never used condom on anal sex. Nine of 26 respondents had experience for anal sex with foreigners. Fourteen (54%) of 26 respondents had history for sexually transmitted diseases. Fighty percent did not have sexual contact after HIV infection and the others usually used condom. It was confirmed that over 57% of the respondents were infected within 1 year before HIV diagnosis and over 82% within 2 years. These data suggest that HTV infection among homosexual group is rapidly spreading.

• 임상간호연구
• /
• 제29권1호
• /
• pp.75-84
• /
• 2023

Purpose: This study developed a protocol for nursing care after death for adult patients in hospitals. Methods: This was a methodological study to develop a care after death protocol. The preliminary protocol was developed based on a literature review, guidelines, and practice recommendations from groups of experts and clinical nurses. Content validity was evaluated by a group of experts (n=6) and nurses (n=30) in two hospitals. Results: The preliminary protocol recommendations were modified by validation and the open-question analysis results. The final protocol comprised three general recommendations and 43 recommendations in five steps that are verification and notification of a death, personal care of the body, viewing the patient, patient transfer, and documentation and self-care. Conclusion: This study result provides nurses with a consensus information on patient care after death and family support in a hospital setting. This nursing protocol is expected to improve the quality of care after death for adult patients and their families, and can be used for developing educational and emotional support for nurses to accomplish their important role.