• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 추계학술발표회 논문집
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• pp.399-404
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• 2004

Recently GPS has been playing an increasingly important role in geodesy and positioning, for example, car navigation system, surveying, ITS(intelligent transport systems), LBS(Location Based Service) and so on. For telematics application, reception conditions of GPS signal are important. In some situation, such as in areas between buildings, metropolitan areas or areas with large skyscraper complexes, there are situations whereby the satellite signal is seriously restricted by various obstacles. Before the signal arrives at the receiver, it may be blocked, reflected, delayed, attenuated or scattered by terrestrial obstacles such as buildings. In this paper, we present satellite imagery data for telematics application. Therefore, for propriety of this studies, we made a GPS satellite visibility experiments in Bun-Dang on same time. This paper describes an approach to calculate building level using 0.6m, 1m, 6.6m resampling aerial polo imagery in stead of the satellite imagery and make a comparative study of accuracy. This paper tests the simulation of GPS signal using the building level.

• 환경영향평가
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• 제10권3호
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• pp.167-174
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• 2001

National Parks in Korea occupy about four percents of South Korean land. This paper aims to prove the potentiality of the application of remotely sensed data for the effective management of National Parks. Different satellite images such as Landsat TM, IRS-1C, Alternative image, and IKONOS image are analyzed for the detection of changes, the extraction of degraded areas, and the comparison of Normalized Difference Vegetation Index (NDVI) in Bukhansan National Park. The artificial structures such as buildings and paved areas are overvalued in relatively higher resolution data. The result showed that the choice of images should be determined according to specific purposes and the combination of different resolution data may be the solution for the effective management of National Park.

• 한국농촌건축학회논문집
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• 제26권2호
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• pp.17-25
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• 2024

This study is to use B.F. certification standards to identify the application and differences of B.F. facilities according to various approaches, and to use the analysis results as basic data for the expansion and renovation of new facilities, the National University (Jeonnam University Library), which underwent remodeling before the implementation of the certification system, and the two newly established private universities (Joseon University Library) that were subject to legal application before the implementation of the certification system. First, Chosun University met more B.F. certification standards than Chonnam National University, and mainly intermediary facilities belonged to the best to the best. Second, Chosun University and Chonnam National University's internal facilities met many B.F. certification standards, and Chonnam National University had many areas to improve and found areas to remodel. Third, information facilities at Chonnam National University and Chosun University only had facilities for the hearing impaired, and there were no information facilities for the visually impaired. Facilities for the visually impaired had to be installed, and compared to Chosun University, Chonnam National University fell short of the B.F. certification standard, so there were many areas that needed to be remodeled.

• 산업기술연구
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• 제26권A호
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• pp.147-152
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• 2006

Wireless Sensor Networks provide a new paradigm for sensing and disseminating information from various environments, with the potential to serve many and diverse applications. Recent advancement in wireless communications and electronics has enabled the development of low-cost sensor networks. The sensor networks can be used for various application areas. For different application areas, there are different technical issues that researchers are currently resolving. The current state of the art of sensor networks is captured in this article, where solutions are discussed under their related protocol stack layer sections. This article also points out the open research issues and intends to spark new interests and developments in this field. In order to evaluate the application of field monitoring system, lab tests, field test and FEM analysis are conducted. Therefore the accuracy of RFID wireless sensor data is verified.

• 한국항해항만학회지
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• 제31권7호
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• pp.613-621
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• 2007

As the era of ubiquitous has come, it is able to have more convenient and efficient operation system since many efforts have devoted to developing an appropriate operation system in the ubiquitous environment and applying RFID/USN technology to various parts in the industry. Also, the port logistics area has considered RFID/USN to develop more efficient port logistics environment and improve their efficiency. Therefore, this study investigates current trends of RFID technology and application cases in the port logistics area since RFID stands in the important position of changes of maritime port environment. This study tries to find possible areas for applying RFID technology and analyze expected effects when RFID is adopted those areas. Lastly, the priority level among the possible RFID application fields in the container terminal has been evaluated by experts' survey.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 춘계학술대회
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• pp.203-206
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• 2009

기상 데이터는 측정 장소의 산재로 인하여 매우 성긴 형태의 값으로 수집된다. 따라서 특정 건물이나 지하철 등 제한된 도시 공간에서 정밀한 기상 정보를 수집하는 것은 별도의 측정 장비를 설치해야 하는 비용 문제를 야기한다. 이 논문에서는 최근 관심을 끌고 있는 센스 네트워크 기술을 활용하여 휴대폰을 센서로 기상 지도 생성 및 서비스 응용 기법에 대하여 고찰한다.

• 한국환경복원기술학회지
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• 제12권5호
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• pp.133-144
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• 2009

This study intends to suggest the improvements for the legal systems related to the conservation of mountain ridge areas. The 4 legal systems directly related to the conservation of mountain ridge areas are reviewed and the current conditions of adaptive reuse of mountain areas and destroy cases in Hwasung are examined. For solving the problems on the basis of the analysis, three proposals for the improvement on legal systems are suggested. First, the integration of present dual legal systems related to adaptive reuse of mountain areas on the assumption that the related criteria and provisions should be amended, second, activation of the legal systems such as natural landscape district and natural landscape review to make up for the laws related to adaptive reuse of mountain areas, third, the enactment and application of the ordinances related with the 'mountain area management law'.

• 한국조경학회지
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• 제22권2호
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• pp.13-24
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• 1994

the purpose of this study was to suggest managemental strategies for one-day use recreational area in public sector under competitive environment with private sector. Data was collected from citizens of Seoul, and 10 recreational areas were determined by a preliminary survey. Theses areas were regarded as "products", then positioning was applied to these products. Perceptual map was produced by multidimensional scaling to identify degree of competition among areas. Properties, which were developed by the Kelly Repertory Grid, were utilized to understand the strong and weak points of each area. Ideal types of recreational areas were analyzed by PREFMAP, then the size and distribution of recreation market of Seoul were found by grouping of individual ideal point by cluster analysis. Several strategies were suggested to enhance the competitive power for public recreation areas, and a few comments were described to improve this method for future research.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.264-267
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• 2004

In identifying flood vulnerable areas, three methods are generally deployed: the geomorphology method which is based on topographic features; the past evidence method based on observed data of past actual floods; and, prediction of flood areas through hydrologic models. This study aims to improve the prediction model of the geomorphology method through the application of fuzzy method in GIS modeling. The generally used GIS method of superimposing thematic map layers assumes crisp boundaries of the layers, which results in either risk-averse solutions or risk-taking solutions. The introduction of fuzzy concepts to processing of evaluation criteria (DEM, slope, aspect) solves this problem. As the result of applying the fuzzy method to a test site in the west Nak-Dong river, similar flood vulnerable areas were predicted as when using the conventional Boolean criteria. The resulting map, however, showed varying degree of uncertainty of flooding in these areas. This extra information is deemed to be valuable in taking phased actions during flood response, leading to a more effective and timely decision-making.

• 한국토양비료학회지
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• 제3권1호
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• pp.35-41
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• 1970

10a 당(當) N 10, 15, 20kg, 인산(燐酸) 8, 12, 16kg 및 가리(加里) 8, 12, 16kg의 각각(各各) 3수준(水準)의 조합(組合)인 삼요소증비(三要素增肥) 요인실험(要因實驗)을 농광(農光)을 공시(供試)하여 숙답구(熟畓區), 저(低) 및 고염분구(高鹽分區)(4월말(月末) 각염분농도(各鹽分濃度) 0.5%와 1%)에서 적기재배(適期栽培)로 실시(實施)하여 아래와 같은 결과(結果)를 얻었다. 1. 인산(燐酸)과 가리시비(加里施肥)를 10a 당(當) 8kg으로 고정(固定)하고 N시비(施肥)를 1.5배(倍)와 2배(倍)로 증가(增加)시켰을 때 숙답구(熟畓區)와 염분구(鹽分區)들에서는 다 같이 시비량(施肥量)에 비례(比例)하여 N 흡수(吸收)가 증가(增加)되었다. 그리고 이때의 N 흡수(吸收)는 대체(大體)로 염분구(鹽分區)에서 더 많았다. N 증비처리(增肥處理)를 하거나 삼요소(三要素) 증비처리(增肥處理)를 하면 염분구(鹽分區)에서는 Ca와 Si의 흡수조해(吸收阻害)가 보였다. 2. 숙답구(熟畓區)에서는 N, P, K의 증비(增肥)는 증수(增收)를 가져오지 못하였고 가리(加里) 2배비(倍肥)는 유의(有意)하게 감수(減收)를 가져왔다. 3. 저염분구(低鹽分區)에서 N 증비(增肥)는 고도(高度)의 유의차(有意差)로 증수(增收)에 효과가 있었으며 N 1.5 배비(倍肥)는 12%, N 2배비(倍肥)는 21% 증수(增收)되었다. 인산(燐酸)과 가리(加里)의 증비(增肥)로는 증수(增收)되지 않았다. 4. 고염분구(高鹽分區)에서도 N 증비(增肥)는 유의(有意)하게 증수효과가 있었으며 인산(燐酸)과 가리(加里)의 증비(增肥)로 증수(增收)되는 것 같으나 유의성(有意性)은 없었다. 5. N 증비(增肥)는 숙답구(熟畓區)에서 1.5배(倍)까지는 수수(穗數)가 증가(增加)되었으나 2배비(倍肥)에서는 더 증가(增加)를 보이지 않았으며 저(低) 및 고염분구(高鹽分區)에서는 시비량(施肥量)에 비례(比例)하여 늘었다. 인산증비(燐酸增肥)는 각(各) 실험구(實驗區)에서 수수증가(穗數增加)의 경향(傾向)이 보였으나 가리증비(加里增肥)는 증가(增加)에 효과가 없었다. 6. 수중(穗重)에 대(對)한 N 증비(增肥)의 효과는 숙답구(熟畓區)에서는 감소(減少)로 나타났으며 양염분구(兩鹽分區)에서는 1.5배비(倍肥)까지는 증가(增加)되나 2배비(倍肥)는 1.5배비(倍肥)와 거의 같았다. 인산(燐酸), 가리(加里)의 증비(增肥)는 어느 실험구(實驗區)에서도 수중(穗重)에 영향(影響)을 미치지 못하였다. 천립중(千粒重)에 대(對)한 N, P, K의 증비효과는 숙답구(熟畓區)와 염분구(鹽分區)에서 모두 뚜렷하지 않았다. 수당립수(穗當粒數)에 대(對)한 N 증비효과는 숙답구(熟畓區)에서 감소(減少)의 경향(傾向)이었으나 양염분구(兩鹽分區)에 있어서는 증가(增加)되었다. 수당립수(穗當粒數)에 대(對)한 인산(燐酸), 가리(加里)의 증비효과는 없는것 같았다. 7. 임실율(稔實率)에 대(對)한 N 증비(增肥)의 효과는 숙답구(熟畓區)에서 감소(減少)되었으며 저(低) 및 고염분구(高鹽分區)에서는 N 증비효과가 없었고 인산(燐酸) 및 가리(加里)의 증비(增肥)는 어느 실험구(實驗區)에서도 효과가 없었다. 8. 정현비율(精玄比率)에 대(對)한 N, P, K의 증시효과는 각각(各各) 어느 실험구(實驗區)에서도 없었으나 설미(屑米)는 N 증비(增肥)에 의하여 숙답구(熟畓區) 및 염분구(鹽分區)들에서 다 같이 증가(增加)되었으며 숙답구(熟畓區)에서는 더 현저(顯著)하였다. 9. 고중(藁重)에 대한 N 증비(增肥)의 효과는 숙답구(熟畓區)와 고(高) 및 저염분구(低鹽分區)에서 다같이 증가(增加)되었으며 인산(燐酸), 가리(加里)의 증비(增肥)는 효과가 없었다. 정조중(精租重)/고중(藁重)에 대(對)한 N 증비(增肥)의 효과는 숙답구(熟畓區)에서는 감소(減少)되었으나 저(低) 및 고염분구(高鹽分區)에서는 증가(增加)되었고 인산(燐酸) 및 가리(加里)의 증비효과는 없었다.