• Journal of Trauma and Injury
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• 제23권2호
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• pp.180-187
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• 2010

Purpose: The "golden hour" concept in trauma is pervasive despite little evidence to support it. This study addressed the association between prehospital time and in-hospital mortality in seriously injured abdominal trauma victims. Methods: A retrospective study was conducted over a three-year period from 2006 to 2008. We analyzed trauma victims with abdominal injuries who underwent an emergency laparotomy in a local emergency center located in a city with a population of 2,500,000. According to the 'golden hour' oncept, we separated the trauma victims into two groups (Gourp 1: prehospital time ${\leq}$ 1 hour, Group 2: prehospital time > 1hour) and investigated several factors, such as time, process, and outcome. Results: During the period from January 2006 to December 2008 139 trauma victims underwent an emergency laparotomy, and 89 of them were enrolled in this study. Between the two groups, emergency department (ED) access, transportation, and injury mechanism showed statistically meaningful differences, but no statistically meaningful differences were observed in various measures of the outcome, such as length of hospital stay, length of Intensive Care Unit stay, and mortality. In a univariate logistic regression study, age (odds ratio [OR]: 1.101; 95% confidence interval [CI]: 1.026 to 1.182), Revised Trauma Score (RTS) (OR: 0.444; 95% CI 0.278 to 0.710), hemoglobin (OR: 0.749; 95% CI: 0.585 to 0.960), and creatinine (OR: 24.584; 95% CI: 2.019 to 299.364) were significant prognostic factors, but prehospital time was not. In a multivariate logistic regression study, age and RTS were significant associated with mortality. Conclusion: In this study, we found no association between prehospital time and mortality among abdominal trauma patient who underwent an emergency laparotomy. We suggest that in our current out-of-hospital and emergency care system, until arrival at the hospital time may be less crucial for trauma victims than once thought.

• 한국초등과학교육학회지:초등과학교육
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• 제39권1호
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• pp.133-144
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• 2020

The purpose of this study is to identify the effect of Teacher Participation-oriented Education Program (TPEP) for Elementary School Teachers to Improve Class Expertise in Science Classes with a focus on visual attention. The participants were two elementary school teachers in Seoul and taught science subjects. The lesson topic applied to this study were 'Structure and Function of Our Body' in the second semester of fifth grade and 'Volcano and Earthquake' in the second semester of fourth grade. The mobile eye tracker SMI's ETG 2w, which is a binocular tracking system was used in this study. In this study, the actual practice time, participant's visual attention, visual intake time average, and visual intake time average were analyzed by class phase. The results of the study are as follows. First, as a result of analyzing the actual class execution time, the actual class execution time was almost in line with the lesson plan after the TPEP application. Second, visual attention in the areas related to teaching and learning activities was high after applying TPEP. Factors affecting the progress of the class and cognitive burdens were identified quantitatively and objectively through visual attention. Third, as a result of analyzing the visual intake time average of participants, there was a statistically significant difference in all classes. Fourth, as a result of analyzing the visual intake time average of participants, the results were statistically significant in the introduction(video), activity 1, activity 2, and activity 3 stages in the lecture type class. The Teacher Participation-oriented Education Program (TPEP) for Elementary School Teachers to Improve Class Expertise in Science Classes can extend elementary science class expertise such as self-class analysis, eye tracking, linguistic, gesture, and class design beyond traditional class analysis and consulting.

• 교육시설
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• 제12권6호
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• pp.36-43
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• 2005

The purpose of this study is the examination of the possibility as grasping the circumstance which is the time required from programming to design process in schools which are established newly and investigating the consciousness of the user's participation, because we need a user participation process in the programming to design process to improve the level of design. The above-mentioned purpose is the reason that this study composes the second grade. This study shows the entirely necessary time to work each step as collecting the data of programming-design process to 33 schools which are established for 4 years between 2002 and 2005 by Busan metropolitan city office of education, and the reason why they need a time each step. As the result of this study, the school established by the purpose of land development business takes more time than the school of learning environment improvement and of reconstruction & transfer case. Because of the change of land for school, we have to take a cautious approach to select the land for school in the future when developing the land. The time required from programming to design process in reconstruction & transfer case is the shortest even though it is different a little according to the kind of schools.

• 아동복지연구
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• 제16권2호
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• pp.109-135
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• 2018

The purpose of this study was to analyze the longitudinal causal relationship between caregiver relations and peer relations of children in out-of-home care. We analyzed the three years(2011-2013) of longitudinal data from the Panel Study on Korean Children in Out-of-Home Care. The autoregressive cross-lagged model (ARCL) was used to measure the longitudinal causal relationship between caregiver relations and peer relations. As a result, first, caregiver relations and peer relations showed stability over time. In other words, the results of the measurement at three time points showed that the caregiver relations and peer relations at the previous time had a significant effect on the caregiver relations and peer relations at the later time point. Second, the previous caregiver relations had a significant effect on the subsequent peer relations over time. Third, the previous peer relations had a significant effect on the subsequent caregiver relations over time. This study confirmed the interrelationships of caregiver relations and peer relations of children in care by examining the longitudinal data using the longitudinal analysis method.

• 국토계획
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• 제54권4호
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• pp.122-130
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• 2019

The purpose of this study is to analyze effect of climate and urban factors on energy resilience, and to explore policy alternatives to strengthen resilience of energy system. For this purpose, this study used extensive literature review on resilience studies and multiple regression analysis. In this study, blackout time was set as a dependent variable. And the independent variables were divided into climate and urban (robustness, countermeasure capacity) characteristics. As a result of the analysis, in terms of climate characteristics, maximum wind speed and cooling/heating degree-day have statistically significant impact on blackout time. With regard to urban characteristics, number of consumer, ratio of deteriorated housing and coast dummy variables have statistically significant impact on blackout time. And the ratio of government employees and road ratio were found to be the most influencing factors to shorten time taken to restore original level of electricity supply. Based on the study results, several policy suggestions to improve energy resilience were made such as continuous management of vulnerable areas and strengthening disaster response services. This study only considered engineering dimension of resilience. Further studies need to be approached on ecological & social-ecological dimension.

• 사회복지연구
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• 제49권1호
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• pp.51-83
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• 2018

본 연구는 IMF 이후 소득 차원에서의 분배 악화와 유사하게 시간사용의 분배에서도 소득계층간 격차가 심화되고 있는 지를 검토하고, 그 영향요인을 분석하였다. 이를 위해 다국가시간사용조사(MTUS)와 생활시간조사 자료를 활용하여 프랑스, 네덜란드, 스페인, 영국, 미국, 한국 등 6개국을 대상으로 다층분석(HLM)을 실시하였다. 주요 분석결과를 제시하면, 첫째, 분석대상 국가들에서 저소득층은 유급노동시간은 길고 여가시간은 짧은 반면, 고소득층은 유급노동시간이 짧고 여가시간은 긴 것으로 나타났다. 둘째, 한국의 저소득층은 비교 국가 중 유급노동시간이 가장 길고 여가시간은 가장 짧아, 일-여가 균형이 가장 낮은 수준이었고, 이러한 양상은 IMF 이후 회복되지 않고 있었다. 셋째, 다층분석 결과, 가구소득이 낮을수록 유급노동시간은 증가하고 일-여가 균형은 감소하여 장시간 노동이 특정 집단으로 귀결되는 시간 불평등 양상이 포착되었다. 넷째, 연평균노동시간은 유급노동시간을 증가시키는 반면, 가족정책지출, 재분배 정책, 소득보장정책은 유급노동시간을 감소시키는 요인으로 드러났다. 다섯째, 연평균노동시간은 일-여가 균형을 감소시켰으나, 가족정책지출, 재분배정책, 소득보장정책은 일-여가 균형을 증가시켰다. 본 연구의 의의는 IMF 이후 한국 사회에서 소득 분배뿐 아니라 시간 사용에서의 계층 간 불평등이 심화되어 왔음을 규명하였다는 것이다. 연구결과에 기초하여 본 연구는 시간을 재구조화하는 정책적 개입 전략으로 노동시간 규제 강화, 육아휴직제도 활성화와 소득대체율 실질화, 소득 재분배 관련 정책 확대, 소득보장과 시간보장 정책의 상호보완적 발전 등을 제시하였다.

• 한국지역사회생활과학회지
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• 제22권4호
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• pp.599-613
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• 2011

This study aimed to provide an efficient time management scheme for farmers by analysing how they experience time constraints in spending their time and understand time management. Firstly, farmers found that they didn't have enough time for farm keeping as a result of house work obligations. It was caused by excessive time for agricultural work. Thus, 93.7% of respondents recognized that ‘they were pressed for time' because there is relatively less time to spend for socio-cultural and physiological matters. In addition, 83.0% responded that they felt the pressure of something. Respondents who were in forties reduced their sleeping hours due to lack of time. The majority of people who were in the farmhouse doing controlled horticulture cannot enjoy their own time for leisure owing to a lack of time. Secondly, respondents under thirty-nine years of age were solving the problems of time constraints as prioritizing matters, planning handling time and utilizing household instruments. On the other hand, respondents who were in forties found the solution by reflecting on their conduct toward a time consumption plan, self-evaluation and received help from their family and/or neighbors. A group of respondents who had already graduated from college or higher education often reflected on their conduct and self-evaluated. Respondants who participatied in farmhouse controlled horticulture, generally took turns in managing their house work. For reducing farmers' time constraints and managing their time efficiently, they should standardize matters done repeatedly and also manage time by dividing work among family members. Furthermore, if a long-term time scheme such as more than a month is established and practiced, time constraints may be somewhat solved.

• 한국산업융합학회 논문집
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• 제5권1호
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• pp.21-26
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• 2002

Response time of actuator in a hydraulic system may be important and necessary to avoid failures and to improve the efficiency of operation. Flow restricting devices can result in a decrease in the peak pressure, but may change the response time. The response time has an important effect on both operator and operator perceived smoothness. The response time should correspond to how fast a system responds to a given disturbance at the system boundary, Occasionally the appropriate response time is not easily determined. This study is on the characteristics of response time in the hydraulic system.

• 대한가정학회지
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• 제32권3호
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• pp.11-26
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• 1994

The purpose of this study is to investigate the change of time use in employed husbands and their wives according to family life cycle. Data for 284 couples were gathered from the structured questionnaire and time diary. The major findings of this study were as follows; (1) The family life cycle had effected on the time use of wives changed remarkable. That is to say the housework time of the unemployed wives decreased after increasing to the second stage but the social-cultural time of those changed to the contrary. (2) The family life cycle affected only the husbands' housework time on the weekend but wasn't the important effect of time use in case of the employed husbands.

• 가정과삶의질연구
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• 제21권1호
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• pp.37-48
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• 2003

The major purpose of this study is to examine how korean elderly people spend their leisure time in a day In order to do this, we analysed the time dairy which were collected through the national investigation made by Korea National Statistical Office in 1999 and executed the frequency analysis, the One-way ANOVA and the Duncan's post hoc test. Major findings are as follows; First, Korean elderly people spent their leisure time passively and negatively Especially, they spent their most leisure time watching TV. Second, Those who were male elderly people, had their spouses and their own cars, and lived in an urban area etc, spend their leisure time executing positive leisure activity such as self-development activity and sports activity.