• 농촌계획
• /
• 제27권3호
• /
• pp.93-102
• /
• 2021

This study was attempted to provide a scientific basis for the problem of location selection by spatial scale for efficient promotion of projects related to green care farm complex. Location potential assessment system in local government scale consists of two major components from demand-side and supply-side consideration. The demand-side aspect considered the characteristics of potential users, while supply-side aspect used total 18 indices over 8 divisions under 3 fields. For the location potential assessment in district scale, total 8 indices under 3 major divisions were considered based on biological, physical, social, and economic environment. The application results of the location potential evaluation system in local government scale(excluding metropolitan cities) showed high location potential in southern Gyeonggi Province and near Busan Metropolitan City. As a result of applying the district-scale location potential evaluation system to Geumsan-gun, Geumsan-eup, Chubu-myeon, and Jewon-myeon have high potential. Further studies to improve the applicability of the developed indices are recommended by enhancing assessment indices, complementing base data, and reinforcing with spatial analysis.

• Spatial Information Research
• /
• 제5권1호
• /
• pp.11-26
• /
• 1997

본 논문은 제2의 금융중심지로 부상하고 있는 강남구를 사례로 GIS 기법을 활용하여 은행점포의 입지를 분석하였다. 금융자율화 이후 급격한 증가추세를 보이고 있는 은행점포의 수는 상당한 지역적인 편재현상을 나타내고 있다. 통계기법을 활용하여 은행 입지에 영향을 주는 입지요인을 추출하였고, 은행이용 고객들에 대한 설문조사를 통하여 은행점포의 상권을 조사하였다. 이러한 기초자료를 바탕으로 하여 GIS기법을 활용하여 입지분석을 실시하였다. 먼저 은행이용고객들에게 최적의 서비스를 공급할 수 있는 목적함수를 토대로한 입지-배분 모델을 적용하여 추출된 입지와 현재의 은행점포의 입지를 비교하였다. 또한 그리드 연산 기법을 활용하여 잠재 수요력과 잠재 공급력의 차이를 통해 앞으로 은행점포의 신규 설립이 가능한 지구를 추출하였다. 본 연구를 통해 GIS기법을 활용하여 입지분석을 실시하는 경우 제한점과 앞으로 해결되어야 할 문제점에 대해 논하였다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권20호
• /
• pp.8951-8955
• /
• 2014

Background: Studies have shown the existence of gender- and age-related differences in the incidence and anatomic distribution of colorectal cancers. The purposes of this study were to analyze the distribution characteristics of colorectal cancer patients regarding gender, age, location and tumor size in the course of colonoscopy. Materials and Methods: All colorectal cancer patients who underwent colonoscopy in the First Affiliated Hospital of Guangxi Medical University from 2003 to 2012 were included in our retrospective study. Demographic information (age and gender) and colonoscopy report information (tumor size and location) were collected and analyzed. To compare the gender differences in tumor location and tumor size, as well as the size differences in tumor location, the chi-square test was used. Results: A total of 3, 369 colorectal cancer patients (2, 007 men vs 1, 362 women) were included in our study. Statistical analysis showed there was no gender difference in the anatomic distribution of the tumors (p>0.05). However, there was a gender difference in tumor size (p<0.05). In addition, our study found there was a significant difference in tumor size between rectal and colon tumors (p<0.001). Conclusions: There was no gender difference in the anatomic distribution of colorectal tumors. In addition, tumors observed in men were larger than in women.

• Smart Structures and Systems
• /
• 제15권3호
• /
• pp.627-643
• /
• 2015

Negative stiffness, previously emulated by active or semi-active control for cable vibration mitigation, is realized passively using a self-contained highly compressed spring, the negative stiffness device (NSD).The NSD installed in parallel with a viscous damper (VD) in the vicinity of cable anchorage, enables increment of damper deformation during cable vibrations and hence increases the attainable cable damping. Considering the small cable displacement at the damper location, even with the weakening device, the force provided by the NSD-VD assembly is approximately linear. Complex frequency analysis has thus been conducted to evaluate the damping effect of the assembly on the cable; the displacement-dependent negative stiffness is further accounted by numerical analysis, validating the accuracy of the linear approximation for practical ranges of cable and NSD configurations. The NSD is confirmed to be a practical and cost-effective solution to improve the modal damping of a cable provided by an external damper, especially for super-long cables where the damper location is particularly limited. Moreover, mathematically, a linear negative stiffness and viscous damping assembly has proven capability to represent active or semi-active control for simplified cable vibration analysis as reported in the literature, while in these studies only the assembly located near cable anchorage has been addressed. It is of considerable interest to understand the general characteristics of a cable with the assembly relieving the location restriction, since it is quite practical to have an active controller installed at arbitrary location along the cable span such as by hanging an active tuned mass damper. In this paper the cable frequency variations and damping evolutions with respect to the arbitrary assembly location are then evaluated and compared to those of a taut cable with a viscous damper at arbitrary location, and novel frequency shifts are observed. The characterized complex frequencies presented in this paper can be used for preliminary damping effect evaluation of an adaptive passive or semi-active or active device for cable vibration control.

• 대한토목학회논문집
• /
• 제34권4호
• /
• pp.1307-1315
• /
• 2014

본 연구는 매입임대주택 거주민의 주거환경 평가를 통해 매입임대주택 거주자의 주거환경 만족도 결정요인을 실증적으로 분석하였다. 매입임대 주택은 현재 거주하는 지역사회에 지속적으로 생활이 가능하여 저소득층의 사회적 격리 현상과 슬럼화 방지 등의 사회적 배제현상이 적은 장점을 가지고 있다. 그러나 주택의 매입기준이 주거환경을 충분히 고려하지 못하는 문제점이 제기되고 있어 매입임대주택 주거환경에 대한 전반적인 평가가 필요하다. 우선, 매입임대주택 거주자의 주거환경 평가를 위해 주거환경 특성, 주거비 특성, 가구주 특성 등으로 구성하여 살펴보았으며 이를 바탕으로 매입임대주택 주거환경 만족도 결정요인을 주택입지 특성, 주택 내 외부 특성 등으로 각각 나누어 살펴보았다. 주거입지에 따른 주거만족도에 영향을 미치는 변수는 공공시설, 교육시설, 복지시설 등으로 나타났다. 특히, 복지시설 접근성의 만족도가 높을수록 매입임대 주택의 주택입지 만족도가 높아지는 것으로 분석되었다. 주택 내 외부 특성에 따른 주거만족도에 영향을 미치는 변수는 창호상태, 균열, 난방설비, 주택규모 그리고 주택관리 등에서 유의한 것으로 나타났다.

• 인터넷정보학회논문지
• /
• 제23권2호
• /
• pp.29-35
• /
• 2022

자외선은 노출 정도에 따라 인체에 유익 또는 유해한 영향을 미치므로 개인별 적정 노출을 위해서는 정확한 자외선(UV) 정보가 필요하다. 국내의 경우 기상청에서 생활기상정보의 한 요소로 자외선 정보를 제공하고 있으나 지역별 자외선 지수(UVI, Ultraviolet Index)로 사용자 위치의 정확한 UVI를 제공하지는 못하고 있다. 일부에서는 정확한 UVI의 취득을 위해 직접 계측기를 운용하지만 비용이나 편의성에 문제가 있고, 태양의 복사량과 운량 등 주변 환경요소를 통해 자외선 양을 추정하는 연구도 소개되었으나 개인별 서비스 방법을 제시하지는 못하였다. 이에 본 논문에서는 각 개인별 위치에서의 정확한 UVI 제공을 위한 태양객체 정보와 태양광 특성을 이용한 UVI 산출 딥러닝 모델을 제안한다. 기 수집한 하늘이미지 및 태양광 특성을 분석하여 태양의 위치 및 크기, 조도 등 UVI와 상관도가 높은 요소들을 선정한 후 DNN 모델을 위한 데이터 셋을 구성한다. 이후 하늘이미지로부터 Mask R-CNN을 통해 추출한 태양객체 정보와 태양광 특성을 입력하여 UVI를 산출하는 DNN 모델을 구현한다. 국내 UVI 권고기준을 고려, UVI 8이상과 미만인 날에 대한 성능평가에서는 기준장비 대비 MAE 0.26의 범위 내 정확한 UVI의 산출이 가능하였다.

• 보건교육건강증진학회지
• /
• 제28권5호
• /
• pp.73-82
• /
• 2011

Objectives: This study is to gain an understanding of the characteristics of suicides committed by university students in Korea by assessing news reports. Methods: A total of 97 news reports on university student suicides on daily newspapers and TV newscasts from 2000 to 2011 are included in this study. Analyses were performed on sociodemographic characteristics of suicided university students and temporal and other characteristics of the suicides. Results: Suicide rate was higher among males than females. The most frequently used method of suicide was jumping off while the most common place was the students’ residence. Issues related to academic and financial problems topped as the reasons for suicide. There were no differences in the reasons for committing suicide by school year and enrollment, but the location and season of committing suicide differed by reasons for suicide. Conclusions: Implication of this study, discussion on the results and suggestions for suicide prevention are discussed.

• Journal of Ecology and Environment
• /
• 제29권5호
• /
• pp.425-432
• /
• 2006

The tadpoles of 12 Korean anuran species, including Bombina orientalis, Bufo gargarizans, B. stejnegeri, Hyla japonica, Kaloula borealis, Rana dybowskii, R. huanrenensis, R. coreana, R. nigromaculata, R. chosenica, R. rugosa, and R. catesbeiana, were classified based on their morphological characteristics. We collected eggs or tadpoles of the 12 Korean anuran species from Gangwon, Incheon, Chungcheong, and Gyeonggi districts in 2005 and 2006 breeding seasons. When the tadpoles reached at $27{\sim}37$ Gosner's developmental stages, we described morphological characteristics of the tadpoles of each anuran species and measured their physical parameters such as total length, body length, and body mass. After that, we chose 12 morphological characteristics to identify each species and to use them as classification keys such as eye location, caudal musculature pattern, spiracle location, oral disc morphology, and labial tooth row formula. In this paper, we presented classification keys, morphological characteristics, and drawings for the tadpoles of 12 anuran species.

• 농촌지도와개발
• /
• 제18권3호
• /
• pp.435-483
• /
• 2011

This paper was to study characteristics of school types based on classification of rural areas. This study tried to provide basic data for implementing the development of rural education policy for the community unit by classifying and analyzing administrative districts. For the purpose, the researcher carried out literature reviews and selected three schools considering the gaps in size and location of rural community. The researcher interviewed teachers and parents, to gather information about rural education, and conducted participant observation on educational activities. As a result, this study showed each rural school has its own distinct characteristics by the school types corresponding to each rural community. Characteristics with school types were influenced by school location, possible migration into the cities, possible opportunities of private tutoring, school size, social class distribution, socio-economic status, dwelling pattern of school teachers. In conclusion, it is important that the educational policies for rural area consider the different characteristics of rural schools.

• 한국전기전자재료학회논문지
• /
• 제26권2호
• /
• pp.134-139
• /
• 2013

When the accident occurred in power distribution system, it needs to control efficiently the fault current according to the fault angle and location. The flux-lock type superconducting fault current limiters (SFCL) can quickly limit when the short circuit accidents occurred and be made the resistance after the fault current. The flux-lock type SFCL has a single triggering element, detects and limits the fault current at the same time regardless of the size of the fault current. However, it has a disadvantage that broken the superconductor element. If the flux-lock type SFCL has separated structure of the triggering element and the limiting element, when large fault current occurs, it can reduce the burden of power and control fault current to adjust impedance. In this paper, this system is composed by triggering element and limiting element to analyze operation of limiting current. When the fault current occurs, we analyzed the limiting and operating current characteristics of the two triggering current level, and the compensation characteristics of bus-voltage sag according to the fault angle and location.