• 한국융합학회논문지
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• 제10권5호
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• pp.111-117
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• 2019

본 연구는 차량 사고에서 병원 전 응급의료 대응시간을 단축시키기 위한 방안을 모색한 융합연구이다. 연구방법은 한국형 교통사고 심층조사 분석 체계(Korea In-Depth Accident Study)에서 2011년 1월 1일부터 2016년 7월 30일까지 3개의 응급의료센터에 119구급대로 내원한 차량 탑승자 353명을 대상으로 날씨, 도로유형, 사고유형, 구조대 출동 여부를 활용하여 병원 전 응급의료 대응시간에 대해 요인 분석하였다. 연구결과에서 고속도로는 병원 전 응급의료 대응시간을 가장 많이 소요하였고 전체시간에 영향을 주는 요인으로 확인되었다(${\beta}=.543$, p<.001). 따라서 고속도로에서 소요되는 시간을 단축시키기 위해 고속도로 119구급대의 운영과 비상회차로의 적극적인 사용, 개별 장치를 부착한 자동 긴급구조신호 서비스의 제공을 제시하였다.

• 한국실내디자인학회논문집
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• 제18권5호
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• pp.128-136
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• 2009

This study analyzed and defines the property of visual perception throughout the revision of the observation time of the original space and the rotating space. The conclusions of this study are as fellows: First, based on the existing theory and experiment, the study obtained the basis which decides the sector data originating fixation-gaze after staring the specific sector over 300ms time. It will become the turning point hereafter for our research to fix the time in this way. Second, in analyzing the minute data, the study built a revision method of the observation time by analyzing the meanings and the reasons of the revision of the original data. Third, according to the difference of revision quantity, female testee have more increases in the amount of data than male testee from the original screen. On the other hand, the opposite tendency appears from the previous data. This shows there is a difference in the observation properly by sex. Last, we could grasp Information about the property of the observation time throughout eyeball fixations, and the revision and analysis of the 'controlled observation data'. These data can be used in design element arrangement of interior space, hereafter.

• Journal of Construction Engineering and Project Management
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• 제4권3호
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• pp.13-20
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• 2014

Estimating time and cost is an important mission in the early phase of a construction project, especially in feasibility study. It provides a foundation for making decision whether or not the project is performed on schedule and within budget. Thus, reliability of this estimate plays a key role in measuring the success of a project. This study was carried out to investigate the time-cost relationship in building construction projects in Bangladesh. The mathematical equation used in this study is based on Bromilow's equation. The research data were collected from sixty-three completed building projects through questionnaire survey. Type of clients, type of projects, and tender methods are the project characteristics considered in this study. The results of analysis indicated that the Bromilow's time-cost (BTC) models developed for each project characteristic are appropriate due to quite high coefficient of determination and relatively small mean percent errors. Among them, the forecasted model for time and cost according to tender methods is the best fit model. It is concluded that the BTC model could be applied in building construction project to predict its time and cost in Bangladesh. Four different regression models were also developed in this study. The results of BTC model between some selected countries were compared to gain the comprehensive view.

• 가족자원경영과 정책
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• 제23권3호
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• pp.1-23
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• 2019

This study was aimed at exploring the differences in time use and time famine among college students ages 18 to 29, with a focus on gender and employment status, and to investigate the determinants of time famine. Data were from the 2014 Time Use Survey by the Korea National Statistical Office. Descriptive statistics, chi-square test, t-test, and logistic regression were used for the statistical analyses. The major findings are as follows. First, the employed spend significantly more time on work and less time studying than the unemployed, and females spend significantly more time on household work and less time on leisure than males. Second, employed students had higher levels of time famine than unemployed students. Third, irrespective of employment status, the education level of students' parents was identified as a determinant of time famine. Other determinants of time famine were age, job, work, and study time for employed students and gender, income, household work, and leisure time for unemployed students.

• 대한전기학회논문지
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• 제41권9호
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• pp.953-959
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• 1992

As the TC(time-current) curve corresponding to symmetrical time invariant RMS value has been traditionally chosen and used for setting the relay, it has caused the misoperation errors on relay coordination because of CT secondary current being actually an asymmetrical time varying RMS value. In this paper, an algorithm for calculating the relay operating time is developed to study the asymmetrical effect using the step-by-step method. We represent the relay operating time errors between with and without DC offset versus PSM(plug setting multiplier), TMS(time multiplier setting) and X/R ratio. And also we present the correction factor. Finally we confirm the validity of this technique through the case study.

• 가정과삶의질연구
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• 제7권2호
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• pp.145-161
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• 1989

The objectives of this study are ; 1) To analyze the time use and the invironments of rural housewives household labor according to the characteristics of agriculture. 2) To investigate the factors influencing household labor time. In this study, the rural areas are divided into two groups according to characteristics of agriculture. One is traditional agricultural area-Seokchon Dong in Youngcheon Kun, and the other is commercial agricultural area-Dongpo 1 Dong in Sungju Kun. Two areas are located in Kyungpook Province. 145 housewives dwelling in above two villiages were interviewed. The statistics used for data analysis were frequency, percentile, T-test, x2-test, and multiple regression analysis. Results are as follows; 1) household labor time had not significant differences Hetween Youngcheon and Sungju. But agricultural labor time was longer in Sungju than in Youngcheon. 2) household labor environments in Sungju were better than those in Youngcheon. 3) household labor time was influenced by agricultural labor time and socio-cultural time.

• 한국조경학회지
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• 제25권4호
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• pp.82-88
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• 1998

The purposes of this study was : 1) to describe the theoretical background of Clean-up Time Movement managing visitors' depreciative behavior ; 2) to test the effectiveness of a mass communication program, Clean-up Time Movement in National Park. This study employed a field experimental design (Multiple time-series design) in Naejangsan National Park. This study evaluated the differential effectiveness of the self-developed Clean-up Time Movement Program to reduce littering behavior between Control groups (Those who not received Clean-up Time Program) and Treatment groups (Those who received Clean-up Time Program) by weighting trash gathered in a litter box and scattered around picnic ground. The results showed that the Clean-up Time Movement Program was more effective to reduce the total trash and the trash degree per a person in Treatment groups than Control groups. It seemed to effective in managing depreciative behavior through the mass communication program in National Park.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.9-13
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• 2009

Recently, construction in downtown is often done closely at the adjacent building. In this case, underground construction need to Basement Composite Wall(BCW) construction. However, generally, during the construction process of BCW form works have many problems that are narrow working space and inefficient time consuming. Despite of these problems, there was no quantitative research for the work time of BCM assembly. Therefore, in this study, work time of CBW form assembly in underground construction is identified by the work analysis. The results of this study reveal that buttress work of basement form take lots of time in the entire work process of Basement Composite Wall form assembly.

• 산업경영시스템학회지
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• 제30권4호
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• pp.111-117
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• 2007

Comparing with bar-code systems, RFID systems can supply more efficient work. Using RFID systems, logistic management systems could be helped effectively to gather real-time information. It's available to reduce the working time and object's delay time, and to deal with real-time information by using RFID system. Until now, based on how many pallets used, there is few study about best workload of RFID system. Therefore, in this study, both bar-code and RFID system simulations were executed for inspection process in distribution center. As a result, following the ware pallet quantity, the total cost of both working time and other delay times were calculated and the sensitivity analysis of total cost trend was executed.

• 가정과삶의질연구
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• 제17권2호
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• pp.137-156
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• 1999

The purpose of this study was to investigate couple's leisure time leisure cost and leisure satisfaction and the relations among these variables. Data for 214 couples were gathered from the structured questionnaire and time diary. The major findings of this study were as follows": (1) The amount of leisure time was very different between husbands and wives. And couples' leisure time was different according to wives' employement status,. (2) The amount of leisure cost was very different between couples and between employed wife and non-employed wife (3) Couple's leisure satisfaction was also different between couples and between employed wife and non-employed wife (4) In husbands' model leisure time had significant effect on their leisure satisfaction. On the other hand in wives' regression model different according to employment On the other hand in wives' regression model was different according to employment status. Employed wives' leisure satisfaction was significnatly rela ed to the leisure time and cost while non-employed wives' leisure satisfaction was related to leisure cost and age.