• Journal of Trauma and Injury
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• 제23권2호
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• pp.113-118
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• 2010

Purpose: Prolonged stay in the emergency department (ED), which is closely related with the time interval from the ED visit to a decision to admit, might be associated with poor outcomes for trauma patients and with overcrowding of the ED. Therefore, we examined the factors affecting the delay in the decision to admit severe trauma patients. Also, a multidisciplinary department system was preliminarily evaluated to see if it could reduce the time from triage to the admission decision. Methods: A retrospective observational study was conducted at a tertiary care university hospital without a specialized trauma team or specialized trauma surgeons from January 2009 to March 2010. Severe trauma patients with an International Classification of Disease Based Injury Severity Score (ICISS) below 0.9 were included. A multivariable logistic regression analysis was used to find independent variables associated with a delay in the decision for admission which was defined as the time interval between ED arrival and admission decision exceeded 4 hours. We also simulated the time from triage to the decision for admission by a multidisciplinary department system. Results: A total of 89 patients were enrolled. The average time from triage to the admission decision was $5.2{\pm}7.1$ hours and the average length of the ED stay was $9.0{\pm}11.5$ hours. The rate of decision delay for admission was 31.5%. A multivariable regression analysis revealed that multiple trauma (odds ratio [OR]: 30.6, 95%; confidence interval [CI]: 3.18-294.71), emergency operation (OR: 0.55, 95%; CI: 0.01-0.96), and treatment in the Department of Neurosurgery (OR: 0.07, 95%; CI: 0.01-0.78) were significantly associated with the decision delay. In a simulation based on a multidisciplinary department system, the virtual time from triage to admission decision was $2.1{\pm}1.5$ hours. Conclusion: In the ED, patients with severe trauma, multiple trauma was a significant factor causing a delay in the admission decision. On the other hand, emergency operation and treatment in Department of Neurosurgery were negatively associated with the delay. The simulated time from triage to the decision for admission by a multidisciplinary department system was 3 hours shorter than the real one.

• 응용통계연구
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• 제32권3호
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• pp.423-434
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• 2019

지난 2018년, 우리사회를 뜨겁게 달구었던 이슈 중 하나로 대입제도 개편에 관한 논쟁을 꼽을 수 있겠다. 그 중에서도 학생부종합전형에 대한 쟁점이 무엇인가를 파악하기 위해 감시와 비판이라는 언론의 기능에 주목하여 관련 뉴스 기사에 대한 토픽 분석을 시도해 보았다. 그 결과 수능체제 개편 논의가 비중있는 주제로 등장하여 수능시험에 대한 한국 사회의 민감성을 보여 주었다. 학생부종합전형과 직접적 관련이 있는 주제로는 학생부종합전형의 세부적인 선발 요소에 대한 논의가 등장하였고, 대입전형의 공정성에 관한 논의와 밀접한 관계를 보였다.

• 경영과학
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• 제16권1호
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• pp.39-50
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• 1999

This paper proposes a new call admission control method to enhance the reverse link capacity of a cell with heavy traffic in the CDMA PCS system under the uneven traffic load between cells. Since the capacity of a cell in the CDMA system is restricted by the total interference caused by terminals in the own cell and the adjacent cells, we can enhance the capacity of a cell by reducing the interference from other cells if possible. Our power control method allows that the signal powers received in base stations with heavy traffic be larger than those received in base stations with light traffic in order to make the interference due to other cells in the cells with heavy traffic relatively small. In the previous study, it was assumed that the signal power received by each base station in the CDMA PCS system is same when the call admission control algorithm is implemented. We could show that the reverse link capacity of a cell in the CDMA PCS system can be increased about 20% under our call admission control method.

• Journal of Communications and Networks
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• 제14권4호
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• pp.461-466
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• 2012

Any future heterogeneous overlay network system must be able to support ubiquitous access across multiple wireless networks. To coordinate these diverse network environments, one challenging task is a call admission decision among different types of network. In this paper, we propose a new call admission control scheme to provide quality of service (QoS) while ensuring system efficiency. Based on the interplay between network structure and dynamics, we estimate the network's QoS level and adjust the service price adaptively with the aim of maximizing the network performance. A simulation shows that the proposed scheme can approximate an optimized solution while ensuring a well-balanced network performance in widely different network environments.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권3호
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• pp.997-1010
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• 2014

Today, as the hierarchical cellular system is getting more attention than before, some recent studies introduce delay based admission control (AC) scheme which delays the admission to the macro-embedded small cell for a relatively short time to prevent unnecessary handover caused by the short-term visitors of the small cell area. In such delay based ACs, when we use improper delay parameter, the system frequently makes incorrect handover decisions such as where unnecessary handover is allowed due to too short delaying, or where necessary handover is denied due to too long delaying. In order to avoid these undesirable situations as much as possible, we develop a new delay parameter decision method based on probabilistic cell residence time approximations. By the extensive numerical and analytical evaluations, we determine the proper delay parameter which prevents the incorrect handover decision as much as possible. We expect our delay parameter decision method can be useful system administration tips in hierarchical cellular system where delay based AC is adopted.

• 수산해양교육연구
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• 제25권1호
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• pp.40-52
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• 2013

The purpose of this study is to explore improving ways of screening of self-directed learning in self-governing high schools for expanding self-initiated learning screening system. To achieve the above aim, it was used survey method to 99 admission teachers of 12 self-governing high schools and analyzed responses with SPSS program. The research findings are as follows. To expand self-initiated learning screening system in self-governing high schools, it needs to obtain admission members of entrance committee, pooling of external screening members, quick decision of school admission members, increasing payment, training and understanding of the system and consideration of admission documents and study plan. Some improving ways of the expanding of self-initiated learning screening may be listed as follows: 1) development of screening model for self-governing schools 2) policy consideration for self-governing public high school 3) expanding autonomy of school 4) supporting budget 5) sharing of operation case and reinforcement of public relations.

• 의학교육논단
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• 제9권2호
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• pp.41-48
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• 2007

Yonsei University College of Medicine is about to adopt a new admission system in 2009 for postgraduate medical school. in which 4-year college graduates apply to it, instead of applying of high school graduates to undergraduate medical school. For preparing the new system, now, an admission policy is being intensively investigated. In the present admission system in Yonsei College of Medicine, college or university graduates with diverse majors such as pharmacy, biochemistry, engineering, social science and so on other than a medical major can be transferred into the undergraduate medical course when vacancy for enrollment is available. This study was performed to analyze the academic achievement of the transferred students for establishing a new admission system. In this study, the GPAs of 94 medical students transferred for 1998 to 2006 years were analyzed regarding academic and personal background, and compared with those of untrans- ferred medical students. The results showed some features. Particularly, the GPAs of transferred students with t he majors of art and social sciences were not lower than those with the major of natural sciences while transferred students with majors of pharmacy. veterinary science, nursing science, and biotechnology had their high academic achievements during the undergraduate medical courses.

• 수산해양교육연구
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• 제23권1호
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• pp.23-34
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• 2011

The primary purpose of this study was to develop a college adjustment program for freshmen through admission officer system that relies less on test scores and on the various talents evaluated by admissions officers. To help these talented students adjust the new life of the university and enhance their gifts, a college adjustment program was developed with their special needs and characteristics. For that, the survey with 57 students and in-depth interviews with 12 students were conducted. The results revealed that the students wanted to learn study skills, self-management, global mind setting, and life vision and goals setting. Most of the students were worried about their grades because they entered the school with their talents and experience in diverse activities not SAT scores. To promote their academic performance, this program consisted of an academic readiness program which complements students' abilities in primary subjects like math, English, and science, and a potential progress program which is peer-group learning communities based on their own interests like global learning communities, creative learning communities, and service-learning communities. This program was suggested in the context of Comprehensive Development Model. To carry out the program systematically, related organizations and colleges should collaborate with each other.

• Acute and Critical Care
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• 제33권4호
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• pp.230-237
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• 2018

Background: Socioeconomic status (SES) is closely associated with health outcomes, including mortality in critically ill patients admitted to intensive care unit (ICU). However, research regarding this issue is lacking, especially in countries where the National Health Insurance System is mainly responsible for health care. This study aimed to investigate how the SES of ICU patients in South Korea is associated with mortality. Methods: This was a retrospective observational study of adult patients aged ${\geq}20$ years admitted to ICU. Associations between SES-related factors recorded at the time of ICU admission and 30-day and 1-year mortalities were analyzed using univariable and multivariable Cox regression analyses. Results: A total of 6,008 patients were included. Of these, 394 (6.6%) died within 30 days of ICU admission, and 1,125 (18.7%) died within 1 year. Multivariable Cox regression analysis found no significant associations between 30-day mortality after ICU admission and SES factors (P>0.05). However, occupation was significantly associated with 1-year mortality after ICU admission. Conclusions: Our study shows that 30-day mortality after ICU admission is not associated with SES in the National Health Insurance coverage setting. However, occupation was associated with 1-year mortality after ICU admission.

• Journal of the Korean Data and Information Science Society
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• 제21권4호
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• pp.699-708
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• 2010

우리나라 대학들은 2009년도부터 입학사정관제도를 통한 학생선발을 하고 있다. 그러나 아직 시행초기인 관계로 여러 가지 문제점들이 노출되고 있다. 이에 대한 해결방안의 일환으로, 본 연구에서 는 지방소재 ㅈ대학교의 사례를 통하여 대학입학 관련 주체별로 입학전형요소에 대하여 갖는 가중치 정도가 어떻게 다른지를 알아보고자 하였다. 그 결과 각 전형요소의 중요도에 대하여 관련 주체별로 많은 차이가 있음을 알 수 있었다. 학부모와 고교교사들에게 있어서는 비교적 계량화가 가능한 학교 생활기록부에 대한 중요도가 가장 높았으며, 계량화가 어려운 자기추천서 평가에 대한 중요도가 가장 낮은 것으로 나타났다. 이에 반하여 전문입학사정관들은 자기추천서에 대해서 가장 높은 중요도를 보인 반면 학교생활기록부에 대해서는 가장 낮은 중요도를 보였다.