• Title/Summary/Keyword: MX

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Optimizing Speed For Adaptive Local Thresholding Algorithm U sing Dynamic Programing

  • Due Duong Anh;Hong Du Tran Le;Duan Tran Duc
    • Proceedings of the IEEK Conference
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    • summer
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    • pp.438-441
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    • 2004
  • Image binarization using a global threshold value [3] performs at high speed, but usually results in undesired binary images when the source images are of poor quality. In such cases, adaptive local thresholding algorithms [1][2][3] are used to obtain better results, and the algorithm proposed by A.E.Savekis which chooses local threshold using fore­ground and background clustering [1] is one of the best thresholding algorithms. However, this algorithm runs slowly due to its re-computing threshold value of each central pixel in a local window MxM. In this paper, we present a dynamic programming approach for the step of calculating local threshold value that reduces many redundant computations and improves the execution speed significantly. Experiments show that our proposal improvement runs more ten times faster than the original algorithm.

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Hologram Quantitative Structure Activity Relationship (HQSAR) Study of Mutagen X

  • Cho, Seung-Joo
    • Bulletin of the Korean Chemical Society
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    • v.26 no.1
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    • pp.85-90
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    • 2005
  • MX and its analogs are synthesized and modeled by quantitative structure activity relationship (QSAR) study including comparative molecular field analysis (CoMFA). As a result, factors affecting this class of compounds have been found to be steric and electrostatic effects. Because hologram quantitative structure activity relationship (HQSAR) technique is based on the 2-dimensional descriptors, this is free of ambiguity of conformational selection and molecular alignment. In this study we tried to include all the data available from the literature, and modeled with the HQSAR technique. Among the parameters affecting fragmentation, connectivity was the most important one for the whole compounds, giving good statistics. Considering additional parameters such as bond specification only slightly improved the model. Therefore connectivity has been found to be the most appropriate to explain the mutagenicity for this class of compounds.

Correction of a maxillary canine-first premolar transposition using mini-implant anchorage (미니 임플란트 고정원을 이용한 전위된 상악 견치-제1소구치의 교정치료)

  • Oztoprak, Mehmet Oguz;Demircan, Cigdem;Arun, Tulin
    • The korean journal of orthodontics
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    • v.41 no.5
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    • pp.371-378
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    • 2011
  • Transposition is defined as a dental anomaly manifested by a positional interchange of 2 adjacent teeth within the same quadrant of the dental arch. Maxillary canine-first premolar [Mx4-3] transposition is the most frequent tooth transposition reported in the literature. In this case report, an orthodontic correction of a transposition of the maxillary left canine and first premolar with the help of palatally located mini-implant anchorage is described. Esthetic and occlusal evaluations suggested alignment of the transposed teeth to their correct anatomic positions in the dental arch. The clinical result at the end of the treatment was satisfactory. Alignment was obtained, and intercuspation was adequate. Nevertheless, the maxillary canine showed facial recession, probably because it was initially positioned buccally. Supporting tissue was examined after treatment and no alveolar bone damage was observed.

The Effect on Neglecting the Longitudinal Moment Terms in a Composite Liminate Plate with Stacking Sequence and Fiber Orientation (적층형태 및 보강방향에 따른 복합적층판의 종방향 모멘트 무시효과)

  • Lee, Bong-hak;Lee, Jung-ho;Hong, Chang-Woo;Kim, Kyung-Jin
    • Journal of Industrial Technology
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    • v.18
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    • pp.97-105
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    • 1998
  • The most of the design engineers for construction has academic background of bachelors degree. Theories for advanced composite structures are too difficult for such engineers and some simple but accurate enough methods are necessary. The senior author has reported that some laminate orientations have decreasing values of $D_{16}$, $B_{16}$, $D_{26}$ and $B_{26}$ stiffnesses as the ply number increases. Such plates behave as special orthotropic plates and simple formulas developed by the author can be used. Most of the bridge and building slabs on girders have large aspect ratios. For such cases further simplification is possible by neglecting the effect of the longitudinal moment terms($M_x$) on the relevant partial differential equations of equilibrium. In this paper, the result of the study on the subject problem is presented.

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Quantitative Analysis of Prussic Acid by Micro-Diffussion Analysis. (I) Determination of Prussic Acid in HCN-Glucoside of Armeniaca. (미량확산분석법에 의한 청산의 정량법 (제1보) 청산배당체(행인)중의 청산의 정량)

  • 심상혁;서정현
    • YAKHAK HOEJI
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    • v.4 no.1
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    • pp.43-46
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    • 1959
  • A new quantitiative analytical method of prussic acid by "Microdiffusion analysis" was studied. HCN-Glucoside of ARMENIACA was hydrolysed with KOH in out-room of unit, and then concentrated sulfuric acid was poured in order to liberate the HCN gas. The liberated gas was absorbed into nickel sulfate solution of inner room of unit quantitatively. The excess of nickel sulfate was determined by EDTA Reagent using MX-indicator. By this method, the following results were obtained: (1) It was needed more than 4 hours, in order to hydrolyse completely at $50^{\circ}C$, but could be shortened to 3 hrs. at $^60{\circ}C$. (2) It was completely absorbed into nickel sulfate solution after 30min.

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Courseware Design and Implementation for Shifting of Figures and Learning on Domains Based on The Web (웹을 기반으로 한 도형이동과 영역학습을 위한 코스웨어 설계 및 구현)

  • 문애리;김하진
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.04a
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    • pp.863-865
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    • 2003
  • 교육정보화의 실현이라는 과제가 현재의 학교현장에 필요한 만큼 제7차 교육과정의 시작과 더불어 학습자의 지식과 능력을 육성하기 위한 미리 계획된 WBI(Web based Instruction)를 기반으로 한 교수 모형의 필요성이 강조된다. 본 연구는 WBI의 교육적 기능을 충분히 반영하여 교실에서 교사가 사용하기 쉽고 효율적인 학습자료를 구현하여 웹 환경이 조성된 교실에서 활용할 수 있도록 하였다. 이러한 구현을 위한 프로그램으로는 웹 환경에서 실행하는데 무리가 없고 소용량으로 에니메이션 효과를 극대화 할 수 있는 Flash MX를 사용하였고, 고등학교 ‘수학10-나’의 내용 중 교과서와 칠판만을 사용하여 수업하는 데는 한계가 있는 과정인 ‘도형의 이동과 부등식의 영역’을 주로 개발하였다. 학습자들은 학교에서 수업한 내용을 웹 환경을 이용하여 개별학습 및 반복학습을 할 수 있고, 교사들은 교실이나 멀티미디어실에서 웹을 통하여 본 연구에서 구현한 프로그램을 사용함으로 학교 수업의 효율성을 높이고자 한다.

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A Design of X-internet Development Framework by Using Flash Component and Service API (플래시 컴포넌트와 서비스 API를 이용한 X-인터넷 개발 프레임워크 설계)

  • Ko, Dae-Sik
    • Journal of Information Technology Services
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    • v.5 no.3
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    • pp.165-172
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    • 2006
  • In this paper, we designed a new type of X-internet framework by using Flash component and server service API and analyzed its performance. Proposed X-internet framework uses Flash MX Professional 2004, Java, and software which opened middleware and database. Since proposed framework use the server service API that we developed in this paper and Flash player, this framework does not need server module. Proposed framework enables to obtain design with dynamic user interface compare to Web application and enables to reduce development time. In analytical results, it has been shown that proposed x-internet framework have efficient characteristics such as network traffic, low development cost and dynamic user interface implementation. Since proposed X-internet framework can operate in environment of current developer friendly, it is useful for development of various new application programs and we confirm it through Flash web mail implementation by using proposed x-internet framework.

Development of 6-component Force/Moment Calibration Machine (6분력 힘/모멘트 교정기의 개발)

  • 김갑순;강대임
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.9
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    • pp.127-134
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    • 1998
  • This paper describes the design of a 6-component force/moment calibration machine with having the maximum capacities of 500 N in forces and 50 Nm in moments. To be used for the characteristic of a multi-component load cell. this machine consists of a body, a fixture, a force generating system, a moment generating system and weights. We have also evaluated the accuracy of the calibration machine. Test results show that the expanded relative uncertainty for force components $\pmFx,\;\pmFy\;and\;moment\;components\;\pmMx,\;\pmMy\;are\;less\; than\;8.6\times10^{-4}$, and force components +Fz, -Fz and moment components $\pmMz\;is\;less\;than\;1.6\times10^{-3},\;2.0\times10^{-5},\;1.7\times10^{-3}$ respectively.

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Fundamental Properties of MxP (M = Ti, V, Fe: x = 2, 3) Binary and Ternary Compounds

  • Yun, Won-Seok;Lee, Jee-Yong;Kim, In-Gee
    • Proceedings of the Korean Magnestics Society Conference
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    • 2012.05a
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    • pp.36-37
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    • 2012
  • In this study, the fundamental properties of $M_xP$ (M = Ti, V, Fe; x = 2, 3) binary compounds were investigated in terms of the FLAPW method within GGA. The calculated lattice parameters are well consistent with experimental values. Among considered systems, only the FM state of $Fe_xP$ compounds found to be more stable compared to the NM one. Discussion on the fundamental properties of $M_xP$ ternary compounds also will be given.

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Design and Implementation of Control Program for EO/IR Camera mounted on Multi-Purpose Unmanned Helicopter

  • Ahn, MyeongGi;Seong, KilYoung;Lee, JongHun;Kim, JaeKyung
    • Journal of Aerospace System Engineering
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    • v.15 no.6
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    • pp.72-77
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    • 2021
  • This paper proposes a design and development plan for a control program for the MX-10 EO/IR camera. This camera is a piece of mission equipment mounted on the multi-purpose unmanned helicopter (MPUH) system. Operators must be able to control the necessary functions of the camera to perform their assigned tasks. To achieve this, the function to control the camera was analyzed, and a control program was developed. In addition, the control program was linked to a joystick for convenient operation of the camera by the operator.