• Journal of Korean Society for Geospatial Information Science
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• v.20 no.3
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• pp.3-10
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• 2012

The investigation of valley networks and their volume provide important information about past water activities on Mars. As an alternative of conventional image processing methods, terrain filtering algorithm using pointcloud data is suggested in this study. First, the topography of pointcloud is inverted so that the valleys become positive features and the algorithm is then applied to distinguish the valleys from the surface. Ground DEM and object DEM are generated from both the valleys and the surface pointcloud then the volume of valleys is estimated by multiplying the height difference between the surface with valleys and the area of valleys based on grid cellsize. In the test of valleys adjacent to Tuscaloosa crater, the total volume of valleys was estimated to be $1.41{\times}10^{11}m^3$ with the difference of 12% and 16% compared with the infill volume of Tuscaloosa crater and BTH result respectively.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.1902-1905
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• 2010

일반적으로 퇴적물로부터 인의 용출은, 산소조건, 수온, 유속 등 여러 환경의 변화에 의해서 이루어지며, 환경에 따라 용출되는 인의 형태 또한 다르다. 따라서 어떠한 기작을 통해 얼마나 많은 양의 인이 용출되는지는 수체의 물리 화학적 조건과 퇴적물에 포함된 인의 존재형태에 의해 결정된다. 따라서 본 연구에서는 담수호의 부영양화 원인물질이면서 부영양화 발생을 제어할 수 있는 가장 중요한 인자로 작용하는 인의 거동특성을 파악하기 위하여 이루어 졌다. 본 연구는 경기도 화성시에 위치한 화성호에서 이루어 졌으며, 대표성을 나타낼 수 있는 3개의 지점을 선별하였다. 퇴적물은 Grap sampler를 이용하여 채취하였으며. Methods for P Analysis, G. M. Pierzynski(2009, G,m Pierzynski)에 의거하여 무기태 인을 loosely and soluble P, Al-P, Fe-P, Reductant soluble-P, Ca-P 5가지 형태로 분류하여 진행하였다. 화성호 퇴적물의 인의 형태별 분류를 실시하여 화성호 퇴적물 내의 무기태 인의 형태 분류와 이를 분석함으로서 인 용출에 의한 수질오염 가능성을 평가해보고자 하였다. 무기태 인의 형태는 세지점 모두 Fe-P > Al-P > Loosely and soluble-P > Reductant Soluble-P > Ca-P 비율로 나타났다. 가장 높은 비율을 차지하고 있는 Al-P 및 Fe-P의 경우, 호소수의 pH에 영향을 크게 받으며 특히 높은 pH에서 수층으로 용출이 활발히 일어날 수 있고, 호소의 물질순환에 있어서 다른 형태의 인보다 식물체에 단기간 이용될 수 있다는 점 때문에 관심이 높은 형태이다. 주로 이들 형태는 도시하수 및 산업폐수의 유입으로 인하여 영향을 받는다. 본 조사결과에서 화성호의 pH는 모든 지점에서 중성인 것으로 조사되었기 때문에 용출가능성은 상대적으로 적다고 판단된다.

• Korean journal of communication and information
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• v.45
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• pp.255-295
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• 2009

The purpose of this study was to investigate how much multi-cultural traits the multiculture-oriented TV programs would have and how they tended to represent it with what kinds of meaning structures. As an object of this study, the authors chose the Program of KBS-TV which had been discussed seriously to raise a multi-cultural issue as well as a sexuality issue of lady guests. They collected 70 weekly programs from Nov. 26 of 2006 to March 31, 2008, and finally selected and analyzed 5 weekly programs as main analytic data. They tried to analyze them with various semiotic research methods, especially, linguistic semiotic research methods and pictorial research methods. As results of this study, it was found that this Program was based on multiful-levels of meaning structure: that is, superficial level, representation level and in-depth level. The superficial level of this program presented various multi-cultural traits through many and various talks of lady guests. Its representation level indicated some patterns of discourses about issues and agendas of the talks among lady guests. The in-depth level was based on the sexuality of lady guests as well as the male-dominant ideology. It was finally implicated that this Program was based on the sexuality and feminity of lady guests even though it tried to advocate its multi-cultural traits.

• Journal of Korea Entertainment Industry Association
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• v.15 no.1
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• pp.63-73
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• 2021

This study aims to analyze music of Yoon-sang, as a part of musical research, which is the most fundamental approach among academic studies on Korean popular music. Yoon-Sang is a representative composer, who has gone through the 1980s to the present. The result of analysis of 21 songs created by Yoon-Sang showed that his songs are mostly characterized by tonal music, in which chord relationships develop focusing on keynotes. The reason why his music does not sound uniform pursuing stability is he properly added the progression of chromatic chords, based on diatonic chords and melodies. Dominant 7th chord and diminished 7th chord are used the most among diverse techniques adding chromatic colors. Along with these chords, chromatic intervals are used not only in chord progression but also in melodies. The successive, ascending or descending movement of the base line is his common composition and arrangement technique revealed in every song. One of formal changes with the stream of the times is that the number of measured in the pre-chorus and interlude that were of great importance in his songs of the 1990s decreased over time. With regard to harmonic changes, whereas modulation between parts was applied to his 2 songs created in the 2010s. Yoon-Sang's music had one strong tonality overall, but his music began to have more than two tonalities starting the 2010s, and this is a big variation in his music.

• Journal of the Korea Institute of Building Construction
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• v.21 no.6
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• pp.641-652
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• 2021

Although detailed information on the construction of Hwasung was recorded in the Hwasungsungyouk-eugye, analysis and evaluation from the perspective of modern construction management were limited. Therefore, in this study, construction management related information such as time, cost, and manpower was analyzed for Paldal-mun. The main work involved in the construction of Paldal-mun was foundation work and masonry work, and the total construction period was 6 months, with the overall construction progressing very quickly. The total cost of the construction of Paldal-mun was about 52,423 Nyong, which can be divided into about 15,9332 Nyang for materials and 36,4901 Nyang for labor cost. Converting these to present value, the material cost is about 1.1 billion won and the labor cost is about 2.5 billion won, and the sum of these is about 3.6 billion won. In the future, we plan to conduct additional research in this area such as deriving detailed input manpower related to the work period for each type of work.

• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.1-10
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• 2015

Generating chord score based on melody is essential for composition and arrangement, while it is picky for amateurs who do not have harmonics knowledges. To solve this problem, we developed automatic chord score generating program, ACGP. Based on genetic algorithm, it successfully reflects diverse hormonic factors and the mood of the music. User interface was also implemented so that anyone can use the program conveniently. Additional analysis was conducted to prove the utility of ACGP.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2009.05c
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• pp.1-6
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• 2009

The HwaSungSungYouk is one of the construction project in viewpoint of today's construction management and various information how to build the HwaSung at the last of the eighteen century had been recorded in HwaSungSungYoukEuGye. The purpose of this study is to analyse the data in HwaSungSungYoukEuGye in viewpoint of today's construction management for estimating the resources of PalDal-mun construction. In the record, there are a 10t of information relate to time management, cost management and human resource management, and the concept of modern construction management will be also use to figure out the construction data of the HwaSungSungYoukEuGye.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2016.11a
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• pp.130-130
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• 2016

본 연구는 다양한 전산도와 유리산도 간의 산비에 따른 인산-망간 화성처리를 바탕으로 각 산비 조건에 따른 피막특성을 SEM과 EDAX로 확인 하였다. 더불어 내마모특성을 확인하고자 내마모시험을 통해 산비 조건에 따른 피막의 마찰계수를 확인하여 분석결과를 토대로 인산-망간 화성처리의 최적 산비를 도출하였다. 그 결과 산비 7.3 부근에서 최적의 표면 및 기계적 특성을 확보하였으며, 산비가 8.4로 지나치게 높거나, 산비가 6.0으로 떨어지게 되면 유리산도가 지나치게 높으면 피막 생성속도 및 결정성이 저하되어 위의 특성이 저하됨을 알 수 있었다.

• Proceedings of the Materials Research Society of Korea Conference
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• 2003.03a
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• pp.157-157
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• 2003

TiAl 금속간화합물은 저밀도, 고용융점 및 우수한 고온강도 둥의 여러 장점을 지녀 고온의 열악한 부식성 분위기에 노출되는 가스터빈, 자동차 엔진부품 등에 사용하기 위해 최근 활발한 연구가 진행되고 있다. 그러나 이 합금의 실용화에 장애가 되는 가장 큰 문제점은 나쁜 저온인성, 고온가공의 어려움 및 고온에서의 나쁜 내산화성이다. 일반적으로 V는 상온연성을 증진시키지만 내산화성을 감소시키고, Nb는 상온연성과 내산화성을 증진시키는 원소이다. 또한 Mo는 강도와 연성을 증진시킨다. 이들 첨가원소의 산화특성을 비교분석하기 위하여 고온산화실험을 실시하고, 산화막의 구조, 산화막의 종류 및 형성과정을 SEM/EDS, EPMA 및 XRD을 이용하여 조사하였다.

• Proceedings of the Korea Contents Association Conference
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• 2014.11a
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• pp.91-92
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• 2014

대중가요에서 경쾌한 감성과 슬픈 감성의 곡의 음악적 요소를 비교하였다. 분석한 음악적인 요소로는 장르, 조성, 곡의 형식, 화성진행, 빠르기가 있다. 이 가운데 두드러진 차이를 나타낸 요소로는 빠르기와 조성변화, 화성 진행을 발견하였다.