Earticle

연구목적: 인력에 의한 조사를 대처할 수 있는 V2I 데이터 기반의 고속도로 휴게소 이용행태 분석. 연구 방법: 휴게소 구간 개별차량의 통행속도 자료 분포 특성을 활용하여 통행상태 그룹 분할 및 휴게소 이용 경계(Boundary) 설정. 연구결과: 검증 결과 점심시간 휴게소 이용률이 급증, 통행속도 자료 분포 상태 간 경계가 명확하거나 불명확한 모든 경우 휴게소 이용경계를 정교하게 산정. 결론: 인력에 의한 휴게소 이용실태 조사를 대처할 수 있어 비용절감의 효과가 크며 조사의 시공간적 범위에 제한이 없음. V2I 시 스템이 구축된 휴게소/졸음쉼터/간이 휴게소 등 각 시간대별 동적 이용률 산정이 가능. 단시간/중시간/ 장시간 이용의 구분이 가능. 차종별 이용실태 도출 가능. 도로구간 불법 주정차 여부 파악 가능. 도로구 간 내 돌발상황 검지 가능. 실시간 휴게소 이용률 및 혼잡도 정보 제공등 다양한 분석과 운영전략 수립 가능.

Purpose: Analysis method of V2I data driven motorway service area usage behavior to cope with manpower survey. Method: Segmentation of traveling state group and boundary using the distribution characteristics of traveling speed data of individual vehicles. Result: As a result of the verification, the use rate of resting places in lunchtime surged, and the boundary between the distribution status of the traffic speed data was clearly or unclear. Conclusion: The effect of the cost reduction is big because it can cope with the use of rest area survey by manpower and there is no limit in the time and space range of investigation. The dynamic utilization rate of each time sequence, such as a service area/drowsiness shelter/simple service area, with a V2I system, can be calculated. Identify illegal parking on highway section. Identify the unexpected situation in the road section. Identify the real-time service area utilization rate and congestion information.

휴게소는 장거리 운전자나 졸음 운전자가 충분히 쉴 수 있는 공간을 조성하여 사고를 미 연에 방지하는 중요한 역할을 한다. 따라서 휴게소의 적절한 위치 선정은 필수적이며, 이를 위해 정확한 수요 예측과 이용자 통행 행태를 분석하는 것은 매우 중요하다. 따라서 본 연구 는 고속도로에서 RSE를 통해 수집되는 DSRC자료를 이용하여 안성휴게소(상행)를 이용하는 휴게소 이용자의 통행 행태를 분석하였으며, 통행행태지표를 토대로 휴게소 이용 확률 모형 을 개발하고 검증하였다. 분석결과, 안성 휴게소(상행) 이용 행태는 통행시간이 평일 90분 이상, 주말 70분 이상일 때 가장 이용 빈도가 높았으며, 휴게소부터 통행종료까지 남은 거리가 30km 이하일 때, 휴게 소 이용률은 급격히 감소하는 것으로 분석되었다. 본 연구의 휴게소 이용 확률 모형을 통해 추정된 휴게소 이용률은 실이용률과 1~2%오차가 발생했다. 본 연구 결과는 정형화된 자료를 이용하여 휴게소 이용 행태를 분석한데 의의가 있으며, 본 연구의 휴게소 이용차량 분별방법론과 개별휴게소이용확률 모형 개발방법은 향후 휴게소 입지선정과 이용자의 서비스 수준 향상을 위한 차별화 전략에 적극 활용될 수 있을 것으로 판단된다.

A Service Area plays an important role in preventing accidents in advance by creating a space for long distance drivers or drowsy drivers to rest. Therefore, proper positioning of the expressway service area is essential, and it is important to analyze accurate demand forecasting and user travel behavior. Thus, this study analysis travel behavior and developed odel of the probability of using the service area by using the DSRC data collected by the RSE on the highway. According to the analysis, the usage behavior of highway service areas was most frequently when travel time was 90 minutes or more on weekdays and 70 minutes or more on weekends. The utilization rate of the service area estimated from the probability model of use of the rest area in this study was 1 % to 2 % error. The results of this study are meaningful in analyzing the behavior of the use of rest areas using the structured data and can be used as a differentiated strategy for selecting the location of rest areas and enhancing the service level of users.

Purpose: This study was to evaluate the utilization of health care service and to provide supportive data for health care policy making in one urban area in Korea. Method: This study tested the significance of public health service using the database of an university hospital and public health center from Feb. 2000 to Dec. 2004. Data were analyzed by multidimensional analysis and data mining technique and produced the information on the classification of utilization characteristics by main disease and the total cost of use and disease association with the users of the public health center. Results: The Results were as follows: 1) Top 10 diseases in the area accounted for 22.4% of total frequency for the most recent 5 years in university hospital, while 59.0% in public health center. 2) There were significant correlations between university hospital and public health center user's insurance type and place of residence: It showed higher use of public health center for free service beneficiaries residing in Seoul than residents in nearby or local area. The medical insurance types for hospital users were more various than those for public health center users. 3) The use of hospital for patients of hypertension, diabetes mellitus and hyperlipidemia was tended to concentrate in mostly autumn and winter since August 2000, while the cost of using public health center for those patients has been steadily reduced since July 2000. 4) As a result of cluster analysis, there were classified into three homogeneous groups according to the total cost of using public health service, age, and the frequency of use. 5) The association analysis on patients with chronic disease in public health center produced a detailed information on accompanying diseases related to the incidence rate of disease of high frequency due to aging, information on drug abuse and immune disease. Conclusion: The health care policy for local community should be evaluated continuously. And the policy to build an integrated data warehousing by public health indicator system and to enhance the faithfulness of data is required.

The perceived performance of food management and the food utilization status of school food service managers in nine sectors of management in the Kyunggido area were evaluated[ED highlight - please ensure this is correct]. The results of this study revealed that 84.5% of the service managers used domestic food and $20{\sim}40%$ used organic food, with an average of 80% using one of these types of foods. In addition, the average use of pre-handling food varied widely when compared to other food items[ED highlight - very confusing, please ensure my changes do not alter your intended meaning] Additionally, most respondents used frozen food (72.0%), processed food (83.9%), and substitute food (53.4%), for the average of 20%,[ED highlight - I cannot infer your intended meaning here, what is an average of 20%? Please clarify]; however, 40.6% did not use any food substitutes. The most common reason given for using pre-handled[ED highlight - do you mean pre-packaged or pre-prepared? Please clarify] food was to save time (32.2%), whereas frozen foods were most often used to help with menu organization (37.5%). Additionally, the respondents most common reason for using processed food was its high acceptability (47.8%), while substitute foods were most often used due to non suitable foods beingreturned (75.3%). Among the varieties of food that were used, those that are easily obtained and cooked were used the most. Furthermore, the mean score for the perceived performance of food sanitary management was $4.51{\pm}0.425$ (based on the 5-point Likert scale). Finally, it was generally believed that the overall food management well executed, but that more active management of unsatisfactory food suppliers is required[ED highlight - please ensure my changes do not alter your intended meaning].