• International journal of advanced smart convergence
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• 제10권1호
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• pp.184-196
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• 2021

This study, in order to evaluate the safety of evacuation by comparing and analyzing the RSET according to the slope change of the ramp, which is a vertical evacuation route in case of fire in a high school building, Evacuation simulation was run the Pathfinder program changed the slope of the ramp to 10°, 15°, and 20° for each male students and female students. In the case of female students, it was analyzed that when the final RSET slope was 15°, 25.7 seconds were shorter than when 10°, and 4.2 seconds were shorter than when 20°. Male students also found that when the final RSET slope was 15°, 23.8 seconds were shorter than when 10°, and 5.4 seconds shorter than when 20°. It was analyzed that even if the number of participants was increased and the evacuation simulation was executed, the safety of evacuation could be improved when the slope of the slope is 15° as the RSET when the slope of the slope is 15° is shorter than that of 10° and 20°.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.42-43
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• 2020

Lauric acid (LA) which is also known as dodecanoic acid has been selected as the phase change material (PCM) owing to eco-friendly in nature. A systematic study has been conducted for encapsulation of LA (core) with silicon dioxide (SiO2) as shell material. Different core-shell ratio was chosen to microencapsulate the LA with 10 ml of tetraethyl orthosilicate (TEOS) as the precursor solution for the formation of SiO2. The synthesis of microencapsulated LA was carried out at 2.5 pH of precursor solution. The synthesized microencapsulated LA are characterized by Fourier transform infrared spectroscope (FT-IR) and X-Ray Diffraction (XRD) which confirmed the presence of SiO2 shell on the surface of LA.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2002년도 창립 20주년기념 국제학술대회
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• pp.219-228
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• 2002

서해 연안의 개발은 갯벌의 감소로 해양생태계를 위협하고 있으며 산업화에 따른 대형 매립공사는 주변의 기상변화와 해상변화를 일으켜 해저지형 및 해안선에 많은 변화를 발생시키고 있다. 또한 선박의 안전한 입, 출항을 위한 항로에 영향을 주고 있다. 따라서 본 연구는 해도에 나타난 기준선인 최저저조면의 해양 기준면을 기초 자료로 사용하여 육지부분의 해안선과 갯벌의 경계로 나타나는 0m경계선, 수심2m선을 수치화 하였으며, 수치화 된 도면을 4개의 구역으로 구분하여 분석함으로써 신공항건설과 신도시개발, 방조제공사 등의 서해 연안 개발에 따른 해안과 해저의 변화 정도를 알아보았다.

• 대한건축학회논문집:계획계
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• 제35권1호
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• pp.127-138
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• 2019

This study was to evaluate the walking speed of elderly people by using the travel route big data collected by travel diary and smart phone application. We analyzed the change of walking behavior in the residential street environments of the elderly whether they had a company or not. We interpreted the meaning based on previous studies. In addition, the characteristics of elderly people's use of the residential street environment were analyzed by comparing the change in spatial speed according to the companion. The result reveals that the usage patterns of the residential street environments change depending on whether they were accompanied or not. First, the elderly tend to do more social activities while walking alone than when they were accompanied. When they were accompanied the social activities occur in empty lot near the residential area. However, the social activities of the elderly occur in open space such as neighborhood park or playground while walking alone. Finally, This study has strength that it empirically analyzes the elderly's walking behavior and usage paths in small outdoor spaces, including residential streets.

• 대한수의학회지
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• 제42권2호
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• pp.283-288
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• 2002

The present study was carried out to examine the effect of insulin formula on blood glucose change in normal Sprague-Dawley male rats. Also, this study was performed to investigate the feasibility of oral insulin formula development. To administrate the insulin formula into intestine, the surgical technique, celiotomy, was performed in rats. Insulin formula was administrated at a dose of 24.5 IU/kg via duodenum, ileum, and colon of the rats, and the blood glucose level was measured. For the comparison, the vehicle without insulin was administrated into ileum via celiotomy. Also, this insulin formula was administrated into rats orally using sonde and the same parameter was treasured. The bloods of all groups were collected from tail veins using syringes at given time interval. Orally administrated group did not show the change of blood glucose level and control group slightly show the change of blood glucose level at 1 hour after celiotomy. All intestinally administrated groups showed the change of blood glucose level. Among the tested groups, ileac administration group and colonic administration group showed the significant change of blood glucose level. Particularly, ileac administration group showed the lowest blood glucose level. To calculate the bioavailability of intestinal and oral administration, insulin solution was injected subcutaneosly, common insulin injection route, into another normal rats. The bioavailability of ileac group was 8.3% when compared with subcutaneous injection, duodenal group was 1.8%, colonic group was 4.2%, and oral group was 0.2%, respectively.

• 한국식생활문화학회지
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• 제13권1호
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• pp.37-46
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• 1998

Distribution structure is the link between a society's needs and its industrial responses. A change in distribution structure brings about a consumption structure which may results in considerable changes in lifestyle including food habits. The purpose of this study was to evaluate a effect of change of distribution structure on the food purchase. The survey was carried from May to June, 1997 by way of questionnaire of 407 housewives, aged 23-64 years, in Seoul and the capital area. The questionaire consists of sociodemographic characteristics of the subjects and distribution channel, information route of food selection, acknowledgement and coefficient of utilization of new distribution channel, mainly used distribution channel in food purchase, important factors in food selection, and food purchasing behavior. Their data were statistically analyzed based on frequency, mean, and $X^2-test$. The major findings of this study were as follows; 1) Most frequently used distribution channels in food purchase were supermarket(38.53%), department store(15.23%), discount store(14.05%), a conventional retail market(13.87%), membership wholesale club(8.07%), and a conventional wholesale market(6.53%). 2) The new distribution channels that subjects have ever used were discount store(75.4% of the subject), membership wholesale club(63%), mail order house(32%), outlet store(29.4%), home shopping(10.3%). 3) Compared to the subject living far from the new distribution channel, the subject living close to the new distribution channel was higher in frequency of new distribution channel utilization. These observations suggest that change of the distribution structure promotes the change of the food purchasing behavior.

• 한국ITS학회 논문지
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• 제12권6호
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• pp.108-115
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• 2013

영상취득 장치를 이용한 지능화된 감시 장치의 개발 기술 또한 발전하고 있다. 이 분야의 기술 영역은 감시하고 있는 장소에 어떤 사람이나 물체를 탐지하는 전경 분리 기술과 사람이나 물체의 이동 경로를 파악하는 추적 기술로 나뉜다. 본 논문에서는 이동체를 탐지하는 기술로서 잡음이나 조도의 변화에 비교적 안정적인 엔진개발을 위한 개선된 알고리즘을 제안한다. 논문의 제안 알고리즘은 사람이나, 동물, 또는 비교적 저속 운행 중인 차량 등의 탐지에 적합한 모델로서, 조도의 변화나 잡음에 안정적이면서 실시간 처리가 가능한 방법을 고안하는 데 주안점을 두고 있다.

• 한방안이비인후피부과학회지
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• 제17권1호
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• pp.75-81
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• 2004

Objective: The study is performed to assure the effect of Sochungyong-tang against the wide-spread syndrome allergic rhinitis. For this purpose, the Sochungyong-tang is administered to the rat, which was induced the allergic rhinitis, then the histological change is observed. And the change of the number of neutrophil and eosinophil is also observed. Methods: The Sprague-Dawley male rats, about 200g of body weight, by Saemtako BIO Korea were divided into normal, control, and experimental group. The rats were adapted under the constant temperature and humidity for a week. The solid feed and the water were provided ad lid during the whole experiment By the Levine & Vaz method, the allergic reaction induced with ovalbumin as antigen by intraperitoneal route. As the Sochungyong-tang is administered, the histological changes of neutrophil, eodinophil, and mucosal findings were observed. Results: 1. Number of neutrophil was significantly decreased in the experimental group as compared with the control group. 2. Number of eosinophil was significantly decreased in the experimental group as compared with the control group. 3. The mucosa and submucosa of the nose in experimental group were appeared as normal histological findings. Conclusion: According to the above results, it is supposed that the Sochungyong -tang has considerable effect on allergic rhinitis.

• 한국도로학회논문집
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• 제19권2호
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• pp.35-44
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• 2017

PURPOSES: This study suggests a specific methodology for the prediction of road surface temperature using vehicular ambient temperature sensors. In addition, four kind of models is developed based on machine learning algorithms. METHODS : Thermal Mapping System is employed to collect road surface and vehicular ambient temperature data on the defined survey route in 2015 and 2016 year, respectively. For modelling, all types of collected temperature data should be classified into response and predictor before applying a machine learning tool such as MATLAB. In this study, collected road surface temperature are considered as response while vehicular ambient temperatures defied as predictor. Through data learning using machine learning tool, models were developed and finally compared predicted and actual temperature based on average absolute error. RESULTS : According to comparison results, model enables to estimate actual road surface temperature variation pattern along the roads very well. Model III is slightly better than the rest of models in terms of estimation performance. CONCLUSIONS : When correlation between response and predictor is high, when plenty of historical data exists, and when a lot of predictors are available, estimation performance of would be much better.

• 건축역사연구
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• 제17권6호
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• pp.29-44
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• 2008

This paper analyses the railroad trunk line constructed in the Korea since the end of the 19th century. The analysis consists of the following problematics. 1) The process of the decision of the railroad route 2) The relationship of the location of Eupchi and the stations By clarifying the above, the purpose of this paper is to clarify how the morphology of the city in Korea has been affected by the change in the relationship with Korea and Japan. The Empire of Japan has been reconnoitering the Korea since way before the formal contract for the railroad construction was signed. Therefore, the Empire of Japan had a very good understanding of the actual transportation system when it started the construction of the railroad. The railroad construction was used by the Empire of Japan to empower the control over the Korea. For this reason, the new railroad system was constructed as a different system from the former transportation system and the urban system was also affected. Also the relationship of the western powers and Japan around the turn of the 20th century defined the characteristic of the railway system as a pathway through the Korean peninsular to link Japan to the continent. Moreover, being apprehensive about the friction with the western, Japan located the railway stations to avoid the missionary land properties. This made it clear that the restraint relationship between Japan and the western affected the urban special structure.