• Title/Summary/Keyword: 3- Dimension

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Measurement of Rock Slope Joint using 3D Image Processing (3차원 영상처리를 이용한 암반 사면의 절리 측정에 관한 연구)

  • Lee, Seung-Ho;Hwang, Jeong-Cheol;Sim, Seok-Rae;Jeong, Tae-Young
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.854-861
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    • 2005
  • Studied accuracy and practical use possibility of joint measurement that using 3D laser scanner to rock slope. Measured joint of Rock slope and comparison applied 3 dimension laser scanner and clinometer. 3D laser scanning system preserves on computer calculating to 3 dimension coordinate scaning laser to object. and according to laser measurement method of interior, produce correct vector value from charge-coupled device(CCD) or laser reciver and telegram register and time measuring equipment. Create of object x, y, z point coordinates to 3 dimension space of computer. Such 3 dimension point datum (Point Clouds) forms relocate position informations that exist to practical space to computer space. Practical numerical values related between each other. Compared joint distribution and direction that measured by laser scanner and clinometer. By the result, Distribution of joint projected almost equally. Could get more joint datas by measurement of 3 dimension scanner than measured by clinometer. Therefore, There is effect that objectification of rock slope investigation data, shortening of investigation periods, investigation reduction of cost. could know that it is very effective method in joint measuring.

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Performance Analysis of Turbo-Code with Random (and s-random) Interleaver based on 3-Dimension Algorithm (3차원 알고리듬을 이용한 랜덤(or s-랜덤) 인터리버를 적용한 터보코드의 성능분석)

  • Kong, Hyung-Yun;Choi, Ji-Woong
    • The KIPS Transactions:PartA
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    • v.9A no.3
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    • pp.295-300
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    • 2002
  • In this paper, we apply the 3-dimension algorithm to the random interleaver and s-random interleaver and analyze the performance of the turbo code system with random interleaver (or s-random interleaver). In general, the performance of interleaver is determined by minimum distance between neighbor data, thus we could improve the performance of interleaver by increasing the distance of the nearest data. The interleaver using 3-dimension algorithm has longer minimum distance and average distance compared to existing random-interleaver (s-random interleaver) because the output data is generated randomly from 3-dimension storage. To verify and compare the performance of our proposed system, the computer simulations have been performed in turbo code system under gaussian noise environment.

Adolescents' Spatial Perception in the 3-Dimension Cyberspace (3차원 사이버공간에 표현된 청소년의 공간의식)

  • Park Kyoung-Ok;Kim Hyo-Young
    • Journal of the Korean housing association
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    • v.17 no.2
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    • pp.97-106
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    • 2006
  • The purpose of this study is to provide basic data for the planning of adolescents preferred space, and fur the purpose of the study analyzed the spaces made by them in the web site where 3-dimension space manipulating is possible and captured their consciousness of space. The study was to interview 60 adolescents in the web-site by video chatting and observation by video ethnography. The results are as follows. 1) Three-dimension space is where adolescents express their present preference for spaces of residence, leisure and outer activities, and where they reveal their desire to be realized in the future. 2) Adolescents foster friendship in the cyberspace, where they meet friends and enjoy talking and share their desire for space creation which is hardly come true in reality. 3) It is possible to grasp their latent preference of space, and actualization of the cyber preference would give them more satisfaction.

The Best Design of the Deep Mixing Method by the rate of substitution (치환율에 따른 심층혼합 처리공법의 최적 설계)

  • Park, Choon-Sik;Lee, Jun-Seok;Jung, Won-Sub
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.03a
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    • pp.123-131
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    • 2009
  • The study decided the improvement depth of soft ground of deep mixing method through 2 and 3 dimension finite element method and following results were acquired. 1. 2 dimension analysis shows settlement 10% more estimated than 3 dimension analysis. 2. When the rate of replacement is under 5%, the settlement sharply increased. 3. The most economical design for the levee was decided 3.0m for width direction, 6.0m for length direction and 8.0m for improvement depth. 4. When the soft ground is developed through deep mixing method, the decision of improvement should be decided through 3 dimension analysis than 2 dimension analysis.

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Education Contents Development that Use Thermoelectric Power Plant Generation Facility Third Dimensional Model (3차원 모델을 활용한 발전설비 교육컨텐츠 개발)

  • Kim, Seok-B.;Back, Nam-H.;Son, Kwang-S.;Kim, Joo-Seok;Moon, Seung-Jae;Lee, Jae-Heon
    • 한국전산유체공학회:학술대회논문집
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    • 2008.03b
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    • pp.362-368
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    • 2008
  • The purpose of this is providing employees who take charge of operation and maintenance at power plant with education contents that can be used for self-studying and on the job training through their computers. We developed the education contents for making actually application possible using this piping and instrument diagram(P&ID), operation and maintenance procedure, unit specification and material of 500MW thermal power plant those include unit equipment 3-dimension animation, character and narration performance considering making teaching plan, flexibility, extension, reuse, maintenance and focusing on user. Specially, we developed the flash type education contents about power plant operation based on the plant 3-dimension animation and the spot real picture concerned about new generation trend for power plant incoming employees actual knowledge. in addition, this contents apparently contributed to improve the level of employees technical power as distributed to employees.

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Analysis of Weld Characteristics for Aluminum 5XXX Series Laser Welding Using 3-Dimension Remote Scanner (3차원 원격 스캐너를 이용한 알루미늄 5000 계열의 레이저 용접에서 공정 변수에 따른 용접 특성 분석)

  • Kim, D.Y.;Park, Y.W.
    • Laser Solutions
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    • v.14 no.2
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    • pp.1-7
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    • 2011
  • The latest trends of vehicle technology development are fuel efficiency improvement, body designs declining air resistance and lightweight of materials. Especially, as lightened weight of materials makes engine efficient so that vehicles keep the best performance, it is the best way to protect the environment and reduce fuel consumption. In this study, we conducted laser welding by using 3-dimension remote scanner that is 5J32 aluminium alloy. Furthermore, conduction experiment that was 3 times repeated for changing factors such as observing angle, laser power and welding speed. we observed exterior and cross section of weled part and tensile strength. When increasing laser power and decreasing laser speed, tensile strength increased. In order to evaluate factors that affect tensile strength qualitatively we conducted ANOVA. We assumed that the factors are observing angle, laser power and welding speed. Then we found that laser power and laser speed affect tensile strength. We conducted evaluation of weldability of aluminium alloy by above ways.

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3dimension Topography Generation and Accuracy Analysis Using GIS (GIS를 이용한 3차원 지형도 생성 및 정확도 분석)

  • Nim Young Bin;Park Chang suk;Lee Cheol Hee
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.23 no.2
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    • pp.189-196
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    • 2005
  • Recently as map making skills developed and as digital maps prevailed, peoples began to take interest in the realistic 3dimension topography rather than the flat 2 dimension one. The experiment is done by using the topographical information from the digital maps, To analyze the preciseness of this 3dimension topography, analysis of the coordinate-changed standard map image and the location errors of the plane and height from digital values of the map's topography by layers and features, were done. The visual results of locational values differed by every programs of coordinate transformation. Errors of locations also appeared from the methods of correcting the visual sources, when deciding the standard source's datum point. The plan's accuracy of the image data coordinate transformation is about ${\pm}4.1m$. In ground distance, therefore, it is included in the allowed error of the 1:25,000 scale changed map, satisfying the plan's accuracy. Also, by the use of reasonably spaced grid, it satisfied the visual topographical accuracy. Because the 3 dimension topographical map can be produced effectively and rapidly by using various scale's standard map image and the digital map, the further practical use of 3 dimension topographic map made by using the existing topographies and changed maps has high expectations.

A Study on the Solidification Characteristics of 3-PLane L-Sections Castings in the Mold (삼면(三面)L-형(型) 주물(鑄物)의 주형내응고특성(鑄型內凝固特性)에 관(關)한 연구(硏究))

  • Han, Y.H.;Lee, G.W.
    • Journal of Korea Foundry Society
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    • v.5 no.4
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    • pp.283-288
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    • 1985
  • The melt of highly purified Zn was poured by top pouring process into the open green sand mold, that was made by using the 3-plane L-sections pattern. After skin was formed, the unsolified melt was poured out by rolling-over. The thicknesses of skin for each different of castings were investigated with one dimension. The results obtained and could be summerzed as follows: 1) While the 3-plant L-sections castings were solidifying in the mold, solidification blocks of different section modulus in the castings were formed, i.e. 1-dimension divergency block, 2-dimension heat divergency block, 3-dimension heat divergency block, 2-dimension heat convergency block, and 3-dimension heat convergency block. 2) When the chill plate was set up to the mold in order to change section modulus artificially, heat divergency blocks and heat convergency blocks according to the shape of chill plate were revealed.

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The Surface Image Properties of BST Thin Film by Depositing Conditions (코팅 조건에 따른 BST 박막의 표면 이미지 특성)

  • Hong, Kyung-Jin;Ki, Hyun-Cheol;Ooh, Soo-Hong;Cho, Jae-Cheol
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.05b
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    • pp.107-110
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    • 2002
  • The optical memory devices of BST thin films to composite $(Ba_{0.7}\;Sr_{0.3})TiO_{3}$ using sol-gel method were fabricated by changing of the depositing layer number on $Pt/Ti/SiO_{2}/Si$ substrate. The structural properties of optical memory devices to be ferroelectric was investigated by fractal analysis and 3-dimension image processing. The thickness of BST thin films at each coating numbers 3, 4 and 5 times was $2500[\AA]$, $3500[\AA]$ and $3800[\AA]$. BST thin films exhibited the most pronounced grain growth. The surface morphology image was roughness with coating numbers. The thin films increasing with coating numbers shows a more textured and complex configuration.

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