• 대한전자공학회논문지TC
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• 제37권2호
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• pp.24-31
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• 2000

무선 멀티미디어 망에서는 멀티미디어 트래픽의 변동성에 더하여 사용자의 이동성까지 고려하여야 하기 때문에 다양한 멀티미디어 트래픽을 위한 채널 할당 방식이 요구되어진다. 기존의 핸드오프 실패확률을 줄이기 위해 제안된 방식은 guard 채널을 이용한 방법으로 핸드오프 연결을 위하여 각각의 기지국에 guard 채널을 두는 것이다. 본 논문에서는 guard 채널을 사용한 무선 멀티미디어 망에서 핸드오프 연결에 우선권을 주는 효율적 채널 할당 방식을. 제안한다. 제안하는 방법은 guard 채널을 비실시간 연결과 실시간 핸드오프 연결이 공유하여 사용한다. 또한 핸드오프 실패 확률을 줄이기 위해서 망자원이 부족한 경우 진행중인 연결의 서비스 품질을 떨어뜨릴 수 있다. 시뮬레이션을 통하여 제안된 효율적인 채널 할당 방식이 기존에 제안된 방법들에 비해 채널 이용률과 핸드오프 실패확률에 대해서 우수한 성능을 가지고 있음을 보인다.

• Journal of Acupuncture Research
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• 제33권1호
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• pp.117-125
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• 2016

Objectives : The purpose of this report is to introduce a rare case of a patient with Chorea Hyperglycemia Basal Ganglia syndrome (C-H-BG) whose initial medical interventions were started 2 weeks after the onset, and to suggest the possibility of treatment using a combined Western-Korean medicine approach. Methods : A 75-year-old female C-H-BG patient complaining of persistent right-sided hemichorea was treated with a therapy that combined Korean and Western medicine from April 4, 2015 to April 29, 2015. Improvements of symptoms were measured by a motor assessment of Unified Huntington's Disease Rating Scale (UHDRS), Visual Analog Scale (VAS) and the number of involuntary movements. Results : Motor assessment of UHDRS, VAS and the number of involuntary movements all showed a gradually improving tendency during 26 days of admission treatment. However, the patient's hemichorea persisted. Conclusion : Rapid blood sugar control is the most important treatment for C-H-BG, because pathologic changes of basal ganglia seem to become irreversible as time goes by. A combined Western-Korean medicine approach to treating C-H-BG seems effective not only in reducing hemichorea, but also in the management of accompanying symptoms such as muscle pain and general weakness.

• 한국통신학회논문지
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• 제27권5C호
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• pp.445-453
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• 2002

ATM망에서 큐 서비스 방식에서는 상위 프레임과 하위 프레임을 따로 정의하여 대역폭 할당과 전송 지연보장을 분리할 수 있기 때문에 종단간 전송 한계에서 QoS를 보장할 수 있는 단순화한 큐 서비스 방식을 제안하였다. 제안한 큐 서비스 방식은 실시간 트래픽과 비실시간 트래픽을 나누어 저장하기 때문에 연결별 트래픽 조절기 없이도 지연 지터 특성이 개선된다. 제안된 큐 서비스 방식을 이용하여 연결 수락 제어는 트래픽 왜곡의 영향을 계산 할 수 없는 트래픽 왜곡의 영향이 실제로 존재한다는 가정 하에 트래픽 왜곡에 대한 영향에 종단간 지연을 보장함으로서 연결 수락 가능범위를 다양한 프레임의 길이에 대해 나타내었으며, 프레임의 길이가 클수록 제안된 큐 서비스 방식의 연결 수락 범위가 지연 EDD방식과 비교해서 많은 차이를 보이지만 프레임의 길이를 점차 줄여갈수록 연결 수락 가능 범위가 지연 EDD 방식에 근접함을 나타내었다.

• 한국통신학회논문지
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• 제29권4B호
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• pp.444-454
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• 2004

인터넷상의 멀티미디어 응용들의 다양한 전송 특성을 지원하기 위해서는 모든 트래픽이 동등하게 처리되는 현재의 최선형 서비스 (best effort)를 극복하고 종단간 QoS를 보장해야 한다. 본 논문에서는 확장성 있는 IETF의 차등 서비스 (differentiated service: DiffServ)에 기반한 대역폭 중계자 (bandwidth broker) 형태의 QoS 할당 및 자원 관리 시스템을 구현한다. 구현된 시스템은 실시간 자원 할당, Edge/Core 라우터의 사용가능 자원 분석, 자원 예약, 시간 지연을 가지는 호수락기능, 사용자와 서버사이의 QoS 협상 및 모니터링을 통한 자원 사용량 감시를 수행한다. 또한 실제 네트워크 상에서의 테스트베드를 통해 응용 트래픽의 요구에 따른 대역폭 할당을 수행함에 의해서 구현 시스템의 성능을 검증한다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제41권5호
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• pp.251-258
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• 2015

Objectives: This study was performed to evaluate the impact of glycosylated hemoglobin (HbA1c) level on characteristics and prognosis of maxillofacial fascial infection in diabetic patients. Materials and Methods: We reviewed the medical records of 72 patients (35 patients with HbA1c lower than 7.0% and 37 patients with HbA1c higher than 7.0%) diagnosed with maxillofacial fascial space infection and hospitalized for treatment at the Department of Oral and Maxillofacial Surgery in Dankook University Hospital (Cheonan, Korea) from January 2005 to February 2014. We compared demographics, parameters of glucoregulation (HbA1c), laboratory parameters of inflammation (white blood cell [WBC], C-reactive protein [CRP] count), type and number of involved spaces, type and number of antibiotics, period of hospitalization, number of surgical operations, need for tracheostomy, complications, computed tomography (CT), and microorganisms between the two groups. Results: Compared with the well-controlled diabetes mellitus (DM) group (HbA1c <7.0%), patients in the poorly-controlled (HbA1c ${\geq}7.0%$) DM group had the following characteristics: longer hospitalization periods, higher values of laboratory parameters of inflammation (WBC, CRP count) at the time of admission, higher number of antibiotics prescribed, more frequent complications, frequent deep neck space involvement, and distinctive main causative microorganisms. As the HbA1c level increases, hospitalization periods and incidence of complications increase gradually. Conclusion: This retrospective study suggests that regulation of DM significantly impacts maxillofacial fascial infection. Poorly controlled DM with high HbA1c level negatively influences the prognosis of infection.

• 생물정신의학
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• 제11권1호
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• pp.33-39
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• 2004

Objective:Nitric oxide(NO) has been known to be associated with tolerance and preference to alcohol. It has also been known to affect various alcohol drinking behavior, alcohol withdrawal symptoms and alcohol- induced brain damage. The purpose of this study was to determine the difference, among alcohol dependence group, alcohol drinking group and abstinence group, in serum concentration of nitrite, a stable metabolite of NO, and it's relationship to clinical and biochemical markers of alcoholism. Methods:Forty subjects diagnosed as alcohol dependence according to DSM-IV diagnostic criteria were evaluated for the clinical characteristics and biochemical markers of alcohol dependence including nitrite with their CIWA-Ar scores checked just after admission. Thirty-nine healthy controls were also evaluated, divided into twenty-three alcohol drinking group and sixteen abstinence group. Clinical characteristics were evaluated by CIWA-Ar, CAGE and AUDIT questionnaires. Aspartate aminotransferase(AST), alanine aminotransferase (ALT), gamma glutamyltransferase(GGT) and mean corpuscular volume(MCV) were used as the biochemical markers of alcohol dependence. Serum nitrite concentrations were measured by Griess reaction. Results:1) The concentrations of nitrite in alcohol dependence patients were not different from those in the control subjects. 2) There were no significant association between the nitrite concentrations and the CIWA-Ar scores in alcohol dependence patients. 3) Nitrites are significantly increased in alcohol dependence group and alcohol drinking group compared with abstinence group. Conclusions:These findings suggest that serum nitrite concentration has no relation with alcohol withdrawal symptoms, but alcohol drinking increases serum nitrite concentration influenced by general condition of the body.

• 중환자간호학회지
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• 제9권1호
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• pp.66-76
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• 2016

Purpose: This study was conducted to examine the relationship between lateral position change and sternal complications after cardiac surgery through median sternotomy. Methods: This study was a retrospective descriptive case-control study, involving 241 patients who underwent cardiac surgery through median sternotomy. Data from October 2011 to September 2014 were collected. Results: Sternal complications (i.e. dehiscence, sternal instability, mediastinitis) developed in 33 patients (13.7%). Primary symptoms of complications were discharge and erythema, and the mean time difference from surgery to appearance of symptoms was 15 days (range, 1-138 days). The factors associated with sternal complications were cancer comorbidity (${\chi}^2=5.22$, p=.039), internal mammary artery procedure (${\chi}^2=4.16$, p=.041), and duration of extra-corporeal membrane oxygenation (p=.033). Position change was not related to incidence of sternal complications (${\chi}^2=0.14$, p=.704). Pressure ulcers appeared in 63 patients (26.1%). Mean time difference from surgery until occurrence of ulcers was 6.7 hours (range, 0-323.0 hours), but position change was started from 132.4 hours (range, 27.1-503.2 hours) after intensive care unit admission. Conclusions: These results provide baseline data to create a standard position change and activity protocol for patients after median sternotomy. Furthermore, the study could help clinical practitioners establish evidence-based nursing practices.

• 한국융합학회논문지
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• 제9권10호
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• pp.533-540
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• 2018

본 연구는 협동동료교수학습이 간호대학생의 의사소통능력과 셀프리더십에 미치는 융합적 효과를 확인하기 위해 시도되었다. 10회의 협동동료교수학습 전후 의사소통능력과 셀프리더십 조사 결과를 SPSS/WIN 19.0으로 시행한 Mann-Whitney U와 Kruskal-Wallis 검정 결과, 의사소통능력은 실험 전후 성격유형, 토론선호 및 리더역량에서 유의한 차이가 있었고, 셀프리더십은 간호학과 입학동기, 리더역량 및 학교성적에서 유의한 차이를 보였다. 처치 전후 의사소통능력과 셀프리더십 간 양의 상관관계가 있었고, Wilcoxon 부호순위검정 결과, 협동동료교수학습은 의사소통능력과 셀프리더십을 각각 유의하게 증가시켰다(p=.008, p<.001). 본 연구 결과 협동동료교수학습은 간호대학생들의 의사소통능력과 셀프리더십 향상을 위한 중재프로그램을 개발을 위해 적용가능한 효과적인 학습법으로 볼 수 있고, 대상자 수를 확대하고 대조군을 둔 실험연구를 제언한다.

• 여성건강간호학회지
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• 제7권4호
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• pp.499-507
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• 2001

The purpose of this study was to explore nursing needs during labor pain that had been suffered by women who have given birth. It is essential to identify the nursing needs in order to solve nursing problems and to provide better care for the parturients. The sample consisted of 20 women of primiparas and 17 women of multiparas. They underwent normal labor and delivered a healthy baby at term. The data had been collected through the unstructured interviews conducted 1-2 days after delivery in the admission room from March 1998 to March 1999. On average, the interviews lasted for about 30 minutes. Interviews were taken with the consent of the subjects. The data are categorized according to the similarities of their contents. Seventeen subordinate categories and six superordinate categories have been identified. Six superordinate categories are 1) physical nursing needs 2) nursing needs of medical behavior 3) emotional nursing needs 4) informational and teaching nursing needs 5) nursing needs of pain control 6) nursing needs of respect(personality). Seventeen subordinate categories include: comfortable posture, touch, professional knowledge and techniques, duty execution, support, company and talk, stable surroundings, reassurance, information on delivery, explanation of medical behavior, information on surroundings, instruction on the case of pain, arbitrary adjustment, artificial adjustment, respect, interest and reflection of opinions. The result of this research is the same as that of foreign research and the items of the questionnaire in Korea are the same as the foreign one. Despite the same result, however, this dissertation is significant in that the research identifies the parturients nursing needs and classified the data and thus the basis has been formed to develop the tools to assess the nursing needs of the Korean parturients. The findings can be used as the guide for nursing intervention of parturients.

• Journal of Yeungnam Medical Science
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• 제11권1호
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• pp.186-192
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• 1994

저자들은 Lown grade IVa의 심실성 기외 수축으로 진단 받고, amiodarone을 약 7개월간 투여 받은 환자에서 amiodarone으로 야기된 간질성 폐질환의 1례를 경험하였기에 그 휘기성에 비추어 문헌 고찰과 함께 보고하는 바이다.