• Journal of Trauma and Injury
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• 제23권1호
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• pp.6-15
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• 2010

Purpose: Trauma is one of the leading causes of death, especially among young people. Life-threatening conditions are very common in multiple-traumatized patients due to concurrent multi-organ injuries. Treating such severely injured patients is time critical. However, in Korea, the transfer of severely injured patients is not uncommon due to the lack of a mature trauma care system. In developed countries, the preventable trauma death rate is very low, but the rate is still very high in Korea. This study's objective was to demonstrate the current serious state in which severely injured patients have to be transferred from a Regional Emergency Medical Center even though it actually serves as a trauma center. Methods: Ajou University Medical Center is a tertiary hospital that serves as a trauma center in Gyeonggido. The medical records at Ajou University Medical Center for a 1-year period from January 1, 2008, to December 31, 2008, were retrospectively reviewed. A severely injured patient was defined as a patient who showed more than 15 point on the ISS (injury severity score) scale. We investigated the clinical characteristics of such patients and the causes of transfer. Results: Out of 81,718 patients who visited the Regional Emergency Medical Center, 19,731 (24.1%) were injured patients. Among them, 108 severely-injured patients were transferred from one Regional Emergency Medical Center to other hospitals. The male-to-female ratio was about 3.5:1, and the mean ISS was 23.08. The most common mechanism of injury was traffic accidents (41.7%). A major cause of transfer was the shortage of intensive care units (44.4%); another was for emergent operation (27.8%). Most of the hospitals that received the severely-injured patients were secondary hospitals (86.1%). Conclusion: Although the Regional Emergency Medical Center played a role as a trauma center, actually, severely-injured patients had to be transferred to other hospitals for several reasons. Most reasons were related with the deficiencies in the trauma care system. If a mature trauma care system is well-organized, the numbers of transfer of severely injured patients will be reduced significantly.

• 토지주택연구
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• 제4권1호
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• pp.89-98
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• 2013

최근 도시의 정책적 패러다임이 지속가능한 도시성장관리 중심으로 전환됨에 따라 교통정책도 승용차중심에서 대중교통중심으로 정책변화가 요구되고 있다. 이러한 배경 하에 복합환승센터의 도입은 매우 필연적이라고 볼 수 있다. 따라서 국가에서 주도하는 국가기간망중심의 환승센터 뿐 만 아니라 광역 및 지역중심의 환승시설에 대한 도입도 필요한 실정이다. 이에 본 연구에서는 효과적인 복합환승시설 도입을 위해 다양한 지역적 특성(영향권, 입지위치, 도시규모, 도시기능)과 환승시설기능(환승공간 이용방법, 연계교통수단)을 고려하여 66개의 사례를 유형화하였다. 또한 통계적인 유의성 검정을 통해 영향권-연계교통수단-도시기능조합과 도시규모-입지위치조합의 2가지 복합화된 유형을 제시하였다. 유형분류를 이용한 기존의 66개 사례지역을 정리해 본 결과 국내외 모두 비교적 규모가 큰 대도시를 중심으로 지역간 연계를 기반으로 하는 복합환승시설이 주류를 이루고 있음을 알 수 있다. 본 연구의 결과를 통해 향후 복합환승시설에 대한 자료가 지속적으로 축적되어질 경우 좀 더 신뢰성이 높은 유형분류의 결과를 기대해 본다.

• Journal of Preventive Medicine and Public Health
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• 제55권4호
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• pp.351-359
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• 2022

Objectives: The Regional CardioCerebroVascular Center (RCCVC) project was initiated to improve clinical outcomes for patients with acute myocardial infarction or stroke in non-capital areas of Korea. The purpose of this study was to evaluate the outcomes and issues identified by the Busan RCCVC project in the treatment of ST-segment elevation myocardial infarction (STEMI). Methods: Among the patients who were registered in the Korean Registry of Acute Myocardial Infarction for the RCCVC project between 2007 and 2019, those who underwent percutaneous coronary intervention (PCI) for STEMI at the Busan RCCVC were selected, and their medical data were compared with a historical cohort. Results: In total, 1161 patients were selected for the analysis. Ten years after the implementation of the Busan RCCVC project, the median door-to-balloon time was reduced from 86 (interquartile range [IQR], 64-116) to 54 (IQR, 44-61) minutes, and the median symptom-to-balloon time was reduced from 256 (IQR, 180-407) to 189 (IQR, 118-305) minutes (p<0.001). Inversely, the false-positive PCI team activation rate increased from 0.6% to 21.4% (p<0.001). However, the 1-year cardiovascular death and major adverse cardiac event rates did not change. Even after 10 years, approximately 75% of the patients had a symptom-to-balloon time over 120 minutes, and approximately 50% of the patients underwent inter-hospital transfer for primary PCI. Conclusions: A decade after the implementation of the Busan RCCVC project, although time parameters for early reperfusion therapy for STEMI improved, at the cost of an increased false-positive PCI team activation rate, survival outcomes were unchanged.

• 보건행정학회지
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• 제33권4호
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• pp.440-449
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• 2023

Background: This study aimed to analyze the prehospital process and reperfusion therapy process of acute ischemic stroke in Busan metropolitan area and examine the impact of living arrangement on the early management and functional outcomes of acute ischemic stroke (AIS). Methods: The patients who diagnosed with AIS and received reperfusion therapy at the Busan Regional Cardiovascular Center between September 2020 and May 2023 were selected. We investigated the patients' hospital arrival time (onset to door time) and utilization of 119 emergency ambulance services. Additionally, various time matrices related to reperfusion therapy after hospital were examined, along with the functional outcome at the 90-day after treatment. Results: Among the 753 AIS patients who underwent reperfusion therapy, 166 individuals (22.1%) were living alone. AIS patients living alone experienced significant delays in symptom detection (p<0.05) and hospital arrival compared to AIS patients with cohabitants (370.1 minutes vs. 210.2 minutes, p<0.001). There were no significant differences between the two groups in terms of 119 ambulance utilization and time metrics related with the reperfusion therapy. Independent predictors of prognosis in AIS patients were found to be age above 70, National Institutes of Health Stroke Scale score at admission, tissue plasminogen activator, living alone (odds ratio [OR], 1.785; 95% confidence interval [CI], 1.155-2.760) and interhospital transfer (OR, 1.898; 95% CI, 1.152-3.127). Delay in identification of AIS was shown significant correlation (OR, 2.440; 95% CI, 1.070-5.561) at living alone patients. Conclusion: This study revealed that AIS patients living alone in the Busan metropolitan region, requiring endovascular treatment, face challenges in the pre-hospital phase, which significantly impact their prognosis.

• 기술혁신연구
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• 제13권2호
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• pp.157-178
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• 2005

During the transformation of the agro-technology extension in rural China, many new Policy experiments are emerging to rebuild the lost linkages and to improve technology transfer with the system and among systems. Applying the Triple Helix Model of academy-agriculture-government relations, this paper explores a new pattern of technology transfer with the case of BaojiCity. The authors interpret the mechanism of 'Courtyards for Agro-experts', as well as the comparison between different types of courtyards. This article concludes that the Triple Helix in the agro-sector improves technology transfer and accelerates knowledge-based regional development. In the interest of farmers there should also be concern over reducing inequity the reform.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.775-789
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• 2011

Centering on KTX stations, Korea is implementing specialized development of metropolitan business zones nationwide and is in the process of building the transfer link system of transportation in order to actualize intermodalism nationwide. Daejeon station, hub of high-speed railway requires the effective transportation transfer system considering Daejeon station area reorganization plan and opening of second phase high-speed railway. Based on the analysis of the possibility and validity of building a transit center under the Transportation System Efficiency Act, it is necessary to make a mutual benefit in a regional development by installing the resonable transfer system between railway and other transportation services. Through analysis of current situations and technical, economic and environmental feasibility evaluation, design plan of effective transportation transfer system in Daejeon station is proposed.

• 기술혁신학회지
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• 제8권3호
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• pp.955-985
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• 2005

This paper describes the evolutionary trajectory of the missions of public research institutes(PRIs) in Korea since 1960s and analyses the newly highlighted role of PRIs as the facilitators of regional innovation system, with questionnaire surveys and the case study of Gwangju Institute of Science and Technology(GIST). PRIs have played important roles in Korean rapid economic development by introducing and improving foreign high-technologies in 1970s and 1980s and by creating new advanced high-technologies in 1990s. In recent years, the functions as regional technology innovators have been considered important as regional innovation system has come to the center of discussion. According to the result of this study, Korean PRIs have recognized their roles relevant to regional innovation, such as developing the technologies of regional strategic industries and awakening regional innovative actors to a sense of research. Regardless of the functions as industrial technology suppliers, however, the bilateral networks between PRIs and regional industries are not revealed strong, whereas those with universities and other research institutes are relatively strong. In addition, the research cooperation of PRIs with regional innovative actors are different by where they are located. The case of GIST shows how a regional PRI operates, commercializes its academic achievement and encourages the regional transfer of the achievement systematically. Finally, this study draws some policy implications on developing regional PRIs.

• BMB Reports
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• 제42권10호
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• pp.642-647
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• 2009

In this study, the effects of $Ca^{2+}$ and cyclic adenosine monophosphate (cAMP) on microsomal triglyceride (TG) transfer protein (MTP) activity were investigated in rat liver. MTP activity was high when liver contained low levels of cAMP, which was induced by administration of glucose, or high levels of total $Ca^{2+}$ and TG. However, MTP activity increased by high levels of $Ca^{2+}$ and TG was reduced in a dose-dependent manner by treatment with dibutyryl-cAMP (db-cAMP), a cAMP analogue. Conversely, when homogenates of liver from normal rats, with low levels of total $Ca^{2+}$ and high levels of cAMP, were incubated with thapsigargin, a $Ca^{2+}$-inducer, MTP activity was increased in a dose-dependent manner compared to control. Therefore, our results suggest that high levels of $Ca^{2+}$ cause hypertriglyceridemia through the elevation of MTP activity, as opposed to high levels of cAMP, which suppress MTP activity and inhibit hypertriglyceridemia.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.1107-1112
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• 2006

The purpose of this study is a heat transfer coefficient test of evaporator tube in shell and tube heat exchanger by shapes, using R-404A. The experimental apparatus is designed to simulate the real heat transfer rate in one shell and tube heat exchanger. The test section is formed four type tubes that are Inner ridged tube, Corrugated tube, Turbo-C tube, Inner fin tube and shell type is formed by electrical heater. All tests were performed at a fixed refrigerant evaporator temperature at $1.5^{\circ}C,\;-3^{\circ}C$ and with mass fluxes of 29, 25 kg/hr. Heat transfer rate is calculated a enthalpy difference in test section. In experiment, heat transfer coefficient measured one by one and electrical heaters are supplemented by evaporator.

• Korean Chemical Engineering Research
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• 제57권3호
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• pp.351-357
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• 2019

2018년 울산에서 Flexible hose의 파단으로 발생한 염소 누출사고를 분석하여 국내 설계 및 관리 기준을 제시하기 위한 연구를 수행하였다. 누출 사고가 발생한데는 다양한 원인이 있지만, 본 논문에서는 직접적 원인인 Flexible hose의 파단을 분석하는데 초점을 맞추었다. 분석 결과, 사고가 발생한 사업장에서 염소 이송에 사용하는 Flexible hose 는 재질 및 사용 두께 측면에서 부적절 했고, 사용 전 압력 테스트도 운전압력 이하에서 하는 등 문제가 있었다. 설문조사를 통하여 염소를 취급하는 울산지역의 다섯 곳의 사업장을 확인한 결과, 한 곳을 제외하고 염소 이송에 부적절한 Flexible hose를 사용하고 있었다. 현재 염소 이송용 Flexible hose의 설계에 대한 국내 기준이 없어 사용하는 Flexible hose의 적정성을 검토하는데 어려움이 있다. 본 연구를 통하여 국내에 적용할 수 있는 염소 이송용 Flexible hose의 설계 기준을 제시하였다. 본 논문에서 제시한 기준을 설계 및 검토에 적용한다면 염소 이송 시 발생할 수 있는 Flexible hose 파단의 위험성을 경감시키는데 기여할 것이다.