• ETRI Journal
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• 제45권6호
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• pp.939-951
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• 2023

It is critical to estimate the location using only Long-Term Evolution (LTE) and Wi-Fi information gathered by the user's smartphone and deployable for emergency rescue, regardless of whether the Global Positioning System is received. In this research, we used a vehicle to gather LTE and Wi-Fi wireless signals over a large area for an extended period of time. After that, we used the learning technique to create a positioning database that included both collection and noncollection points. We presented a two-step positioning algorithm that utilizes coarse localization to discover a rough location in a wide area rapidly and fine localization to estimate a particular location based on the coarse position. We confirmed our technology utilizing different sorts of devices in four regional types that are generally encountered: dense urban, urban, suburban, and rural. Results presented that our algorithm can satisfactorily achieve the target accuracy necessary in emergency rescue circumstances.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2013년도 춘계 종합학술대회 논문집
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• pp.251-252
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• 2013

Most of the Historic Preservation Areas are very vulnerable to disasters. The aim of this study is to build probability of street blockade for evacuation routes planning from each house to an evacuation place at a large-scale disaster in such a historic preservation area. The study area is Hamanaka Machi Happongi Shuku in Kashima city, Saga Prefecture, which has been designated as a preservation district of traditional buildings. To achieve this aim, we referred to the formula for probability of street blockade for normal city area made by Tokyo Fire Agency. We revised it, considering the width of street under 4 m, structure of houses along the street, and the distance from the house to main street with the width over 4 m. Then, we applied the revised formula to the study area.

• 한국측량학회지
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• 제25권3호
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• pp.199-205
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• 2007

본 연구에서는 주요한 소음원의 하나인 도로교통소음의 도심지에서의 전파양상과 피해정도의 명확한 분석을 위해 항공 LiDAR자료를 이용하여 건축물이 포함되지 않은 지형자료(DEM; Digtal Elevation Model) 및 건축물 정보가 포함된 지형자료(DBM; Digital Building Model)를 각각 작성하고, 각 자료별로 소음영향평가를 수행하여 그 결과를 비교하였다. 그 결과, 건축물 정보가 없는 경우 도로교통소음의 전파로 인하여 연구대상지역의 약 60%의 면적이 60dB(A) 이상의 소음께 노출되는 것으로 분석되었으나. 건축물 정보가 있는 경우는 약 30% 정도의 면적만이 노출되는 것으로 분석되었다. 또한, 정온한 환경으로 인식되는$45{\sim}50dB$(A)소음도구간의 면적이 건축물이 없는 경우 0%에서 건축물이 있는 경우 43%로 나타나 건축물에 의해 도로교통소음의 전파양상이 크게 영향을 받는 것을 알 수 있었다. 따라서 정확한 도로교통소음의 영향을 예측하기 위해서는 건축물 형상에 대한 정보가 필수적으로 포함하여야 할 것으로 판단되었다. 이러한 연구의 결과를 토대로 향후 항공 LiDAR 측량 등을 통하여 전국적인 규모의 건축물 정보가 획득된다면, 도로교통량정보를 이용한 도로교통소음 영향평가를 효율적으로 수행할 수 있을 것으로 판단되며, 이는 U-City 등과 같은 대규모 도시건설에서 소음문제예방, 교통계획 및 시공계획 수립 등을 위한 기초자료로서 활용이 가능할 것이다.

• 한국환경복원기술학회지
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• 제8권2호
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• pp.65-75
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• 2005

A green area plan is getting attention as a way to solve the recent urban problems such as the rise of environment problems. To correspond to this change, there were dramatic amendments for the green area related laws. These amendments are appraised as the epochal turning point for the green area policies. This study is to introduce the main contents of amended urban green area law and urban park law in Japan, to compare with the Korean green area related laws, and to summarize the special features of both countries' green policies and the comments about the Korean green area policy structures. As a result, this amendment of Japan established the unified green area policy structure supporting the green area policies of municipal governments and is inducing living environment improvement by securing green area in the center of city, support, and the participation of residents. On the other hands, this amendment of Korea is a lack of the systemization of green area policy and the phased establishments of green area plan in spite of the scope of whole city because of absence of the unified high level plan.

• 한국지리정보학회지
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• 제12권2호
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• pp.99-110
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• 2009

본 연구의 목적은 도시의 녹지네트워크를 구현함에 있어 시가화 지역을 대상으로 산재해 있는 녹지분포 특성을 조사한 후, 이를 기반으로 야생조류의 이동경로를 예측하여 녹지네트워크 계획을 수립하는 것이다. 이를 위해 경상남도 창원시를 대상으로 시가화 지역에 대해 녹지분포를 조사하고, 여기에 야생조류 이동가능 루트의 예측을 위해 30m간격으로 가상의 격자 네트워크를 구축한 후 경로탐색을 실시하였는데, 이 때 도심내 파편화된 도시녹지와 도시 외곽의 연결이 방향에 관계없이 일정하게 일어나는지를 분석하기 위하여 8지점 및 16지점으로 구분하여 경로분석을 실시하였다. 그 결과 양 분석 모두 가상의 이동경로가 대체로 동일한 지역을 지나는 것으로 분석되고 있었다. 이에 야생조류의 이동횟수가 집중된 지역을 중심으로 녹지네트워크를 설정하는 것이 도심 내 야생조류 유입을 위한 타당성이 높은 것으로 판단되었다. 이러한 녹지네트워크 계획 결과는 도시외곽의 양호한 자연지역에 서식하는 야생조류의 원활한 도심 내 유입을 위한 시가화지역의 생태적 연결성 확립에 기여할 것이다.

• 농촌지도와개발
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• 제22권1호
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• pp.79-92
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• 2015

Agricultural Technology Center is an education center to provide agriculturalists with information and technology related with agriculture. As domestic and international environment of agriculture and rural area is changing, functions and roles of Agricultural Technology Center are evolving according to stream of times. In 1995, a new urban and rural complex city was created for symbiotic relationship between city and rural area, As a result, user group of Agricultural Technology Center expanded to nonagriculturalists. Though the change of agricultural extension service is necessary to perform extended functions of rural area and to satisfy needs of new group of users, it is difficult to find enough studies on new functions and roles of Agricultural Technology Center to manage the service change. Therefore, this study is aimed to suggest new functions and roles of Agricultural Technology Center according to stream of times. This study were surveyed through questionnaire targeting users of Namyangju Agricultural Technology Center to compare user group awareness of Agricultural Technology Center in urban and rural complex city. According to this study result, while main purpose of agriculturalists' visiting at Agricultural Technology Center was participating in education programs related with agriculture. In contrast, nonagriculturalists usually visited the center for agricultural understanding, leisure activities, and children education, participating in field work programs. From the survey result of required functions of the center, it was revealed that nonagriculturalists expected urban agriculture, research for living improvement in rural area, adjustment education for returning farmer, and function of farming promotion, comparing agriculturalists. It is verified that this difference of user group awareness reflects the necessity that Agricultural Technology Center should change services and accept increasing use of nonagriculturalists with new functions and roles.

• 교육녹색환경연구
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• 제20권1호
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• pp.29-42
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• 2021

본 연구는 학생수가 급격히 감소하고 있는 구시가지역의 중장기 학생수 증감 추이, 통학구역 내 학교위치, 통학거리 등을 조사·분석하여 학교 재배치에 도움이 되는 실질적 방안을 제공하고자 하였다. 이를 위하여 선행연구 조사, 사례지역 분석 등을 실시하여 구시가 지역 학교 재배치 모형을 도출하였다. 구시가지역 학교 재배치 모형 도출은 먼저 대상지역과 학교별 학생수의 중장기적 변화추이를 분석하고, 학교별 학생들의 통학거리를 실측하여 통학구역 내의 학교 위치를 본 연구에서 제시한 지역 맞춤형 학교 배치 격자도 모형을 통해 학교를 배치한다. 그리고 학교 재배치 계획은 인근의 도시정비사업과 연계 등을 통해 학교용지를 확보하고 지역 소생활권 계획과 연계한 중장기적 학교 재배치 계획을 수립하여 시행할 필요가 있다.

• 한국디지털건축인테리어학회논문집
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• 제11권2호
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• pp.5-12
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• 2011

As the city have been enlarged bigger and more complicated recently, a discussion about a city right, started on the base of perception that a city must be recognized as a public resource and the value. A city rights imply equal use and participation in these city resource. From a start of modern city, a city space have been developed mainly, as a man's economic business and industrial area, but now, to ensure a woman's city right is getting an important factor of citizen's settlement. Then many domestic cities tries to promote a woman friendly city creation. The main purpose of this paper is to find the concept of woman friendly city, based on a gender-sensitive perspective view point and to make an assessment index of Woman Friendliness of the City (WFC). In a case of Ansan City which city is in the planning stage of application for a woman friendly city.

• 한국농공학회논문집
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• 제53권6호
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• pp.171-183
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• 2011

Temporal and spatical surface runoff by heavy rainfall during 25~28 July, 2011 causing urban flooding at Seoul were analyzed using Long-Term Hydrologic Impact Assessment (L-THIA). L-THIA was calibrated for 1988~1997 and validated for 1998~2007 using monthly observed data at Hangangseoul watershed which covers 90 % of Seoul city. As a results of calibration and validation of L-THIA at Hangangseoul watershed, Nash-Sutcliffe coefficients were 0.99 for calibration and 0.99 for validation. The simulated values were good agreement with observed data and both calibrated and validated levels were "very good" based on calibration criteria. The calibrated curve number (CN) values of residential and other urban area represented 87 % and 93 % of impervious area, respectively, which were maximum percentage of impervious area. As a result of L-THIA application at Seoul city during 25~28 July, 2011, most of rainfall (54 %, 287.49 mm) and surface runoff (65 %, 247.32) were generated at 27 July, 2011 and a significant amount of rainfall and surface runoff were occurred at southeastern Seoul city. As a result of bi-hourly spatial and temporal analysis during 27 July, 2011, surface runoff during 2:00~4:00 and 8:00~10:00 were much higher than those during other times and surface runoff located at Seocho-gu during 6:00~8:00 represented maximum value with maximum rainfall intensity which caused landslide from Umyun mountain.

• 한국주거학회논문집
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• 제20권2호
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• pp.37-46
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• 2009

With old housing being renovated in both the Gatdui and Daean areas, of the Gyeongju downtown area, this study was carried out to examine the implications of various renewal approaches in a city that is rich in both history and culture. The study included a physical survey of the areas under construction as well as a questionnaire given to residents to analyse their level of satisfaction with and requirements for housing and their preferring housing types. The study also analysed renewal patterns among the residents were analysed by examining the ways in which particular renovations had been performed. The findings showed that both governmental authorities and private parties need to be involved and work together if such renewals are to be successful. In recent years there have been regular conflicts between those in favor of development and those in favor of preserving the historic and cultural resources of the city. At times the city identity has been neglected by residents. In the future, it will be necessary to take both development conditions and the residents' economic situations into consideration when making decisions about renewal and to consider a wide range of methods for rearranging housing patterns, with the goal of transforming housing renovation into a broader program of social rearrangement for the purpose of improving social patterns in the city.