• 대한지리학회:학술대회논문집
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• 대한지리학회 2006년도 연례 학술대회
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• pp.19-20
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• 2006

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2004년도 추계 학술발표대회 논문집
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• pp.58-59
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• 2004

• 한국동물학회:학술대회논문집
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• 한국동물학회 2000년도 한국생물과학협회 학술발표대회
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• pp.163-164
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• 2000

No Abstract, See Full Text

• 한국산림과학회지
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• 제97권2호
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• pp.165-170
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• 2008

Litterfall has been recognized an important part of the forest ecosystem production, playing a major pathway in energy flow and nutrient cycling through the ecosystem. This study was carried out to examine the quantity and components, temporal variation, and spatial heterogeneity of the litterfall in the mixed broadleaved-Korean pine forest. The data were collected from the 9ha permanent experimental plot, of which on the center area, i.e. $150m{\times}150m$, the total number of 319 circular litterfall traps with the size of $0.5m^2$ were established to collect falling litterfall. The results showed that the annual amount of litterfall was totalized 3,033.7 kg/ha, occupying broad-leaves of 39.3%, conifer-leaves of 29.5%, others of 18.5%, branches of 10.4%, and seeds of 2.3%. The peak point of the litterfall production was made at the end of September, proportionating 32.2% of total amount. The analysis of semivariogram revealed the existence of high spatial heterogeneity, calculated the scale of spatial heterogeneity ranged from 11.6 m to 29.1 m. The result of proportion (C/[Co+C]) showed that spatial heterogeneity of autocorrelation in total spatial heterogeneity were from 97.0% to 100%. The relatively heavy branches and others had significant differences in litterfall production between the areas of canopy gap and closed canopy in the 95% probability level, but the other components did not show statistical differences.

• 한국공간정보시스템학회 논문지
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• 제1권1호
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• pp.29-37
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• 1999

공간정보의 구축이 활발해지면서 정보유통에 관심이 높아지고 있다. 정보유통은 각 시스템 마다 개별적 체계를 갖을 수 있으며 GIS의 경우도 마찬가지이다. 본 논문에서는 GIS의 공간정보 유통체계를 설정하고, 그 체계에 대한 정보망 성능평가 방식을 연구하기로 한다. 이를 위하여 인터넷 전산망의 유형별로 지리공간정보의 보관 내용 및 규모, 유통되는 정보의 량 등을 가정하고 현재의 인터넷 망을 기준으로 한 분석을 수행한다. 유통망의 성능 측정을 위한 도구로는 대기행렬모형을 적응하도록 하고, 다양한 형태의 유통서버가 운영될 경우 이들의 성능을 측정할 수 있는 방안을 제시한다. 이와같은 방법은 향후 GIS의 정보량과 정보 유통량이 예측되었을 경우 유통망의 구성 형태에 따른 다방면의 성능측정을 가능하게 하여 보다 우수한 성능의 유통체계의 수립을 도울 수 있다.

• 정보처리학회논문지D
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• 제13D권6호
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• pp.789-796
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• 2006

센서네트워크의 유비쿼터스 환경에서는 지능적이며 상황적응적인 서비스를 제공하기 위한 상황인식 기술이 핵심이다. 상황인식 응용을 지원하기 위해 특정 응용에 종속되지 않고 같은 환경 안에서 응용들이 공유하여 인식할 수 있는 새로운 상황정보 모델이 요구된다. 또한 상황정보모델은 다양한 상황표현과 복잡한 상황인식을 지원하여야 한다. 따라서 이 연구에서 상황인식 과정에 따라 상황정보를 정의하고 도메인 지식과 응용 지식을 온톨로지와 규칙을 이용하여 설계하였다. 공간객체모델을 이용하여 도메인의 공간 온톨로지를 표현하였으며 온톨로지를 확장한 규칙으로 응용 지식을 표현하였다. 풍부한 공간 온톨로지의 표현은 객체의 위치뿐만 아니라 객체사이의 거리와 인접한 객체에 대한 상황정보도 표현하였다. 제안한 상황정보 모델은 확장성과 유연성 및 상호교환을 가능하게 하며 기존의 GIS와 연동하여 다양한 공간상황을 표현하고 복잡한 공간상황을 인식할 수 있는 모델이다. 이 모델을 기반으로 한 시스템구조는 다양한 상황인식 응용뿐 아니라 대규모 실외 상황인식 응용인 대기오염과 재난재해방재 서비스에 적용 가능함을 제시하였다.

• 대한임상검사과학회지
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• 제37권2호
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• pp.111-117
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• 2005

The purpose of this study is to provide the basic guidelines of spatial and physical environment for the planning and design of clinical laboratory by analysing the extent of satisfaction of clinical laboratory scientists. The data for this analysis was gathered from March to May 2005 by the questionnaires of 208 clinical laboratory scientists who work in the 13 hospitals. All the collected data was analyzed by the SPSSWIN program. In this study, the satisfaction measurement tool was composed with 8 items and 5 score scale. The mean score of satisfaction for spatial and physical environment was 2.89 out of 5.0, "noise" was the lowest 2.40, "temperature and moisture of the lab." was 2.72, "lab. area, service area and administration area" was 2.77, "passageway space" was 2.94, circulation of workers was 2.94, "color of finish" was 3.19, "lighting of lab." was the highest 3.39. In conclusion, various factors, noise, temperature and moisture, clinical lab area, were evaluated to moderate dissatisfaction. Noise was especially the first serious problem in clinical lab. Considering the high growth of the number of tests, the planning of the clinical laboratory size should be considered not only to provide the optimal size but how it will correspond to the growth of the number of tests. Therefore the arrangement of each section need to be flexible in arrangement which is inevitable in expansion and reconstruction in the future.

• 한국IT서비스학회지
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• 제15권3호
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• pp.211-221
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• 2016

The human spatial mobility information is in high demand in various businesses; however, there are only few studies on human mobility because spatio-temporal data is insufficient and difficult to collect. Now with the spread of smartphones and the advent of social networking services, the spatio-temporal data began to occur on a large scale, and the data is available to the public. In this work, we compared the movement behavior of residents and tourists by using geo-tagged tweets which contain location information. We chose Seoul to be the target area for analysis. Various creative concepts and analytical methods are used: grid map concept, cells visited concept, reverse geocoding concept, average activity index, spatial mobility index, and determination of residents and visitors based on the number of days in residence. Conducting a series of analysis, we found significant differences of the movement behavior between local residents and tourists. We also discovered differences in visiting activity according to residential countries and used applications. We expect that findings of this research can provide useful information on tourist development and urban development.

• 한국환경과학회지
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• 제15권12호
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• pp.1141-1154
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• 2006

Orographic effect is one of the important factors to induce Local circulations and to make atmospheric turbulence, so it is necessary to use the exact topographic data for prediction of local circulations. In order to clarify the sensitivity of the spatial resolution of topography data, numerical simulations using several topography data with different spatial resolution are carried out under stable and unstable synoptic conditions. The results are as follows: 1) Influence of topographic data resolution on local circulation tends to be stronger at simulation with fine grid than that with coarse grid. 2) The hight of mountains in numerical model become mote reasonable with high resolution topographic data, so the orographic effect is also emphasized and clarified when the topographic data resolution is higher. 2) The higher the topographic resolution is, the stronger the mountain effect is. When used topographic data resolution become fine, topography in numerical model becomes closer to real topography. 3) The topographic effect tends to be stronger when atmospheric stability is strong stable. 4) Although spatial resolution of topographic data is not fundamental factor for dramatic improvement of weather prediction accuracy, some influence on small scale circulation can be recognized, especially in fluid dynamic simulation.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.466-469
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• 2005

In this study e-map component was designed and developed to possibly overlay with all kinds of thematic maps in various scales and provide the all detailed information by using high-resolution satellite image and GIS. Also, this system has powerful map composition tool to display map such as legend, scale bar, index map and so on. For this, this e-map component was designed by using UML and developed based on Windows 2000 and implemented by using Visual Basic 6.0 as development programming language, Map Objects 2.1 of ESRI as GIS component. Through this system, the forest officials could generate more detailed topography and desired thematic map. In addition, the data consistency in DBMS could be maintained by using SDE (Spatial Database Engine) for their job and share the standard forest database with others in real time.