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소프트웨어의 개발 단계에서는 검증을 위한 V&V(Verification & Validation) 프로세스를 통해 체계적인 개발 활동이 가능하도록 지원하고 있다. 이에 반해 소프트웨어 요구사항 분석 이전에 수행되는 연구 단계는 그렇지 못하며, 또한 소프트웨어 연구 사업의 평가 시 구체적인 기준의 부재, 평가 시간과 수집된 자료의 부족 등의 문제가 제기 되었다. 따라서 본 논문에서는 연구자의 연구 활동과 연구 평가자의 연구 평가 활동을 지원하기 위해 소프트웨어 관련 국제 표준에서 추출한 요구사항을 바탕으로 하여 목표 구조, 평가 메트릭을 도출하고, 평가 시나리오와 그것을 해설해주는 가이드라인을 생성하는 방법을 제안한다. 우리의 연구는 연구 평가를 위한 메트릭 가이드라인인 라이덴 선언에 일부 부합하는 것을 확인하였다. 연구 결과는 연구 평가의 효율화와 자동화를 위한 향후 연구의 기초가 될 것이다.
Purpose: Children visit the emergency department (ED) with more severe abdominal pain, nausea, and vomiting without specific cause than any other outpatients, and many have recurrent abdominal pain (RAP). For that reason, we examined the correlation betwe
Purpose: Homeless patients usually live outside and are therefore frequently exposed to injury and tetanus infection. Thus, after visits to an emergency department (ED) due to injury, homeless patients need to be vaccinated for the prevention of tetanus infection with tetanus immunoglobulin regardless of tetanus antibody titer or previous vaccination history. Because the exact history of previous tetanus vaccination in homeless patients is unclear, the tetanus antibody titer between homeless patients and general patients was assessed. Methods: Subjects who visited the ED after injury from October 2008 to February 2010 were enrolled. All participants answered questions on age, gender, previous vaccination or prophylaxis history, and military service. The Tetanus Immunoglobulin G ELISA (Enzyme-linked immunosorbent assay) method was used for the analysis of serum samples. Propensity score-matched analysis was used to control for age, gender, previous vaccination or prophylaxis history, and military service. Results: A total of 1325 samples were analyzed. There was 83 samples from homeless patients and 1242 samples from general patients. After matched analysis using the propensity score, 56 subjects were matched. The geometric geometric mean titer of tetanus antibody was 0.204±0.392 IU/mL in homeless patients and 0.105±0.143 IU/mL in general patients (p=0.078). The proportion of patients with a safe tetanus antibody titer was 66.1 percent of homeless patients and 23.2 percent of general patients (p<0.001). Conclusion: Homeless patients had a higher mean titer and a statistically higher proportion had a safe titer compared to general patients.
항공기 레이다는 운용자가 공간적으로 밀집된 표적들을 분리해 볼 수 있는 RA(Raid Assessment) 모드를 제공하여, 운용자가 추적하고 있는 하나의 표적에 대해 밀집편대의 대수를 파악할 수 있게 하기도 한다. 본 논문은 AESA(Active Electronically Scanned Array) 레이다를 기반으로 RA 모드 구현을 위한 파형운용과 표적 추출 및 신호처리 등의 설계를 제시한다. 시뮬레이션과 AESA 레이다를 수송기에 탑재하여 RA 모드를 수행한 비행 시험을 통해 제시한 방법의 기능 및 성능을 확인하였다. Some airborne radars provide the raid assessment mode, which enables the operator to separate closely spaced airborne targets, allowing the operator confirm the number of planes in a dense squadron. This paper presents a design of waveform operation, target extraction, and signal processing method for implementation of the raid assessment mode based on an AESA (active electronically scanned array) radar. The function and performance using our proposed method were confirmed through simulations and a flight test in which the raid assessment mode was conducted with the AESA radar mounted on a cargo aircraft.
김진주 ( Jin Joo Kim ), 신종환 ( Jong Hwan Shin ), 임용수 ( Yong Su Lim ), 김정권 ( Chung Kwon Kim ), 김재광 ( Jae Kwang Kim ), 현성열 ( Sung Youl Hyun ), 양혁준 ( Hyuk Jun Yang ), 이근 ( Gun Lee ), 최영철 ( Young Cheol Choi ) 대한응급의학회 2008 大韓應急醫學會誌 Vol.19 No.5
Purpose: Relative adrenal insufficiency is common in intensive care unit patients. Basal cortisol and the cortisol response following the injection of synthetic corticotropin were prospectively evaluated in postresuscitation patients after cardiac arrest. Methods: This is a prospective cohort study of relative adrenal insufficiency of patients with return of spontaneous circulation (>24 hours) after cardiac arrest who were admitted to the intensive care unit over three-year period from January 2005 to December 2007. Relative adrenal insufficiency was measured the next day after return of spontaneous circulation following cardiac arrest. Results: Seventy-five patients were included over three years. Relative adrenal insufficiency developed in 41 patients. In patients with relative adrenal insufficiency, SOFA (sequential organ failure assessment) and lactate were elevated (p=0.03, 0.048), mortality was higher (p=0.014) and basal cortisol concentrations were significantly increased (p=0.001). In patients with therapeutic hypothermia, there were no significant differences with or without relative adrenal insufficiency (p=0.847). The factors associated with mortality, as assessed by multiple logistic regression were relative adrenal insufficiency, therapeutic hypothermia and the time from arrest to the start of cardiopulmonary resuscitation. Conclusion: Both basal cortisol and the cortisol response after the injection of synthetic corticotropine must be considered in predicting patients outcome. For patients with relative adrenal insufficiency, some specific treatments such as cortisol can be considered. More prospective multicenter study is needed.
Purpose: Tetanus vaccine or immunoglobulin is given routinely to patients with wounds according to immunization history. Our aim is to identify prediction factors that affect tetanus antibody titer, which lead to proper application of an antibody screening test according to the factors. Methods: Subjects who visited the emergency department after injury from October 2008 to February 2010 were enrolled. The Tetanus Immunoglobulin G ELISA (Enzymelinked immunosorbent assay) method was used for analysis of serum samples. Using multivariate analysis, we identified statistically significant variables affecting the tetanus antibody titer. And we developed the Boramae Tetanus Score as a screening model. Results: A total of 1218 samples were analyzed. Significant factors affecting tetanus antibody titer were as follows: Age in the twenties, thirties, and fifties, male sex, and experience of military service. We assigned proper scores to each variable using the beta-coefficients. The area under the Receiver Operating Characteristic (ROC) curve of the scoring system was 0.807. Patients were categorized as high risk and low risk groups; 18.0% of the high risk group and 67.7% of the low risk group had serum tetanus antibody titer higher than safe antibody level (0.1 IU/mL). Conclusion: The antibody titer of the high risk group was low enough for performance of routine immunization. “In order to prevent unnecessary immunization, patients in the low risk group should undergo screening using proper tools”.