• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
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• pp.987-992
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• 1989

A system for 3-dimensional measurement of structures like buildings, pressure vessels and ships is presented. Two electric transits, which are latest surveying instruments, are controlled with a computer in order to scan the target surface of the object. An image processing unit relieves the operator of the burden of manual adjusting for forcusing the sighting tele-scope.

• 한국안광학회지
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• 제13권1호
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• pp.65-69
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• 2008

목적: Doublet 반사경을 이용한 조준사격용 도트 사이트 장치의 개발. 방법: Sigma 2000 광학 설계 프로그램으로 Singlet 반사경과 Doublet 반사경을 설계하여 비교 검토하였다. 결과: 유한광선수차 분석에서 기존 Singlet 반사경을 사용한 도트 사이트 장치에 비해 시차(parallax)가 제거된 유효 시야가 3.3배 확대되는 성능을 보인다. Doublet 반사경을 사용하는 경우 광학계의 중심 두께가 기존 Singlet 반사경을 사용한 경우보다 2배 이상 두꺼워지기 때문에 목표점이 관측자의 망막에 결상할 때 Singlet 반사경의 경우와 같이 제1면과 제3면의 곡률반경을 동일하게 할 경우에는 배율 변화가 나타난다. 이를 극복하기 위해 Doublet 반사경인 경우에는 어포칼 조건을 만족하는 것이 필요하다. 결론: 기존의 Singlet 반사경의 방식보다 시차(parallax)가 제거된 유효 시야가 3.3배 확대되는 성능을 가지는 Doublet 반사경을 이용한 조준사격용 도트 사이트 장치를 개발하였다.

• 한국산학기술학회논문지
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• 제14권12호
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• pp.6196-6203
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• 2013

본 연구에서는 "지적재조사에 관한 특별법"에서 규정하고 있는 지적측량 기술들의 고찰과 함께 현재 새롭게 대두되고 있는 관련 측량 방법들을 분석해 보았다. 그리고 분석된 내용을 기초로 향후 지적재조사사업에 효율적인 적용 방안을 제시해 보고자 하였다. 분석된 새로운 기술은 GNSS, GPS RTK, Network RTK, GPS Augmentation System 그리고 모바일 및 자동시준 TS이었다. 분석결과 GPS/GLONASS/Galileo 시스템을 통합수신 할 수 있는 수신 기술을 개발한다면 위치결정의 정확도 향상은 물론 안정적인 데이터의 취득이 가능할 것으로 판단된다. Network RTK 기술은 장기적으로는 GPS Augmentation System을 이용한다면 위성정보의 수신 제약요소를 해결할 수 있을 것으로 판단된다. 끝으로 모바일 및 자동시준 TS기술은 인원소요를 줄일 수 있으나 초기화의 문제가 극복되어야 적용이 가능할 것으로 판단되었다.

• 한국측량학회지
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• 제9권2호
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• pp.37-48
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• 1991

본 연구에서는 단열망 형태와 유심조합망 형태를 고려하여 기존 망조정 방법 및 조합 망조정 방법에 의해 계산된 각 점의 평균제곱근 오차와 표준오차 타원을 계산하여 자 방법을 비교 분석하였다. 본 연구 결과로써 기존의 망조정 방법에서는 삼변측량, 다가측량, 삼각측량의 순으로,.조합 망조정 방법에서는 다변측량, 조합 다각측량, 삼각 삼변측량의 순으로 정확도가 좋게 나타났으며, 중요한 신설점을 추가할 경우 망의 형태는 단열망 형태보다 유심조합망 형태로 구성하여 잉여관측수를 증가시킴으로써 정확도를 향상시킬 수 있었다. 또한, 조합 다각측량의 경우, 관측 가능한 측선거리를 추가시킴으로써 삼변측량의 성과에 준하는 정확도를 얻을 수 있었고, 시통이 양호하고 넓은 지역에는 다변측량 방법이 효과적이며, 도시 지역과 같은 시통이 어려운 시가지에서는 조합다각 측량을 이용하는 것이 바람직하다고 사료되었다.

• 한국수산과학회지
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• 제40권4호
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• pp.201-209
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• 2007

Line transect sampling in a sighting survey is one of most widely used methods for assessing animal abundance. This study applied distance data, collected from three sighting surveys using line transects for finless porpoise that were conducted in 2004 and 2005 off the west coast of Korea, to four models (hazard-rate, uniform, half-normal and exponential) that can use a variety of detection functions, g (x). The hazard-rate model, a derived model for the detection function, should have a shoulder condition chosen using the AIC (Akaike Information Criterion), as the most suitable model. However, it did not describe a shoulder shape for the value of g(x) near the track tine and underestimated g (x), just as the exponential model did. The hazard-rate model showed a bias toward overestimating the densities of finless porpoises with a higher coefficient of variation (CV) than the other models did. The uniform model underestimated the densities of finless porpoise but had the lowest CV. The half-normal model described a detection function with a shape similar to that of the uniform model. The half-normal model was robust for finless porpoise data and should be able to avoid density underestimation. The estimated abundance of finless porpoise was 3,602 individuals (95% CI=1,251-10,371) inshore in 2005 and 33,045 individuals (95% CI=24,274-44,985) offshore in 2004.

• 수산해양기술연구
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• 제57권4호
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• pp.351-364
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• 2021

In this study, the vertical distribution of giant jellyfish analyzed echo counting method and such survey methods as sighting and trawl were used to compare its density estimates. In May and July 2021, surveys were conducted in the East China Sea and the coastal waters of Korea. As a result, Nemopilema nomurai were evenly distributed in all water layers in East China Sea in May and July. When considered the correlation by each survey methods, it is possible to identify jellyfish in the surface area by sighting method and using sampling net; however, it has a low correlation with acoustic estimates due to marine environmental factor such as weather condition, wind and atmospheric pressure. Therefore, the result can be utilized by basic data when estimating jellyfish's distribution patterns and density estimates from each survey methods hereafter.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제5권8호
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• pp.23-32
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• 1999

It's difficult to understand the interior of complex facilities such as general hospital, because interior spatial composition in hospital tends to be focused. So it is important to find out how people understand the structure of interior spaces. Therefore, this study aims to analyze spatial information from the sign data concerned with sighting and thinking of subject who make way-finding as a first-time visit from an entrance to a goal by way-finding method and clarify plan of sign in two general hospital which have typical plans in Korea.; One is corridor type and the other is hall type.

• 한국항해학회지
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• 제8권2호
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• pp.1-13
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• 1984

This paper concerns computerization of the altitude correction in the sight reduction process. To obtain observed altitude, the factors such as refraction, parallx, semidiameter, phase etc, are corrected to sextant altitude. The factors are the arguments into the nautical almanac table from which are extracted values to add to or substract from the raw sight to obtain corrected value. If the altitude correction is to be done by sophisticated calculator, each factors must be formulated. The author studies the formulation of above factors, and simply from the date and ephemeris time of the sighting calculate the values of the factors. The calculated values are compared with that from nautical almanac, and it is confirmed that the formulae are practically used.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제52권8호
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• pp.397-404
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• 2003

In part I, we studied only step speed control for train, the second part extended to beacon signaling system and moving block system. With the calculated braking distance in part I, part II showed how to reduce headway using the beacon signaling system and moving block system, revealed that the beacon system has a braking distance advantage for sighting allowance with compared to step speed control, proposed beacon installation interval and revealed the braking distance with moving block system being nearly approached to train pure braking distance. We compared three different train control system to decide the best signaling system for a given condition and obtained the result that three systems have a same headway near 10～13 steps speed control.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제5권2호
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• pp.50-54
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• 2024

On August 21, 2023, the National Institute of Ecology reported the sighting of an invasive slug resembling Limax maximus Linnaeus, 1758. near Bambat Tree Frog Park, Suwon-si, Korea. This slug is known for its aggressiveness. Specimens were collected around the park and from nearby farms. Through barcoding analysis and sequence comparison, it was identified as L. maximus, confirming its presence in Republic of Korea, alongside two previously identified Limax species, Limax flavus Linnaeus, 1758 and Lehmannia marginatus O. F. Müller, 1774. This study represents the first documented report of L. maximus in the country.