• Title/Summary/Keyword: Kweon Seop

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Forming and Developing Rural Neo-Confucian Literati after Gweon, Sangha's Move to Hwang-gang (권상하(權尙夏)의 황강(黃江) 이주를 계기로 한 재지사족(在地士族)의 형성과 발전)

  • Ku, Wanhoe
    • The Journal of Korean Philosophical History
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    • no.35
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    • pp.43-71
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    • 2012
  • Rural Neo-Confucian Literati were major governing elite in Joseon Dynasty. They were small and medium-sized landowners all over the country and elite having Confucian knowledge. They formed villages of the same family name and exerted their influence on the community showing off their successful ancestors. Therefore, there were lots of examples that they took the actual leadership in local communities. In this sense, the Hwacheon-gun pa family line of the Andong Kweon clan were the representative rural neo-Confucian literati of Hwang-gang and Shindong areas in Jecheon. This group was formed after Kweon Sangha and his brothers' movement in 1675. Kweon was the best pupil of Song Siyeol, a prominent scholar and man of power. Although facing away the government examination, he was respected as sallim, rustic literati, on account of his teaching and writing activities and later called to High State Councillor. After his death, memorial halls and facilities to worship him, including Hwang-gang Sowon Academy, were built in the place he taught students. These facilities contributed to his descendants' acquiring his life values. They also made a contribution to the settlement of reject-heterodoxy sentiments based on their loyalty to the Myeong Dynasty in the area. Kweon Seop, Kweon Sangha's nephew, also played an important role in Hwacheon-gun pa family line's growing as rural neo-Confucian literati in Jecheon area. He built memorial halls to enshrine Kweon Sangha and made rules to develop his family line. In addition, he extended their living space over Hwang-gang area and each place had the shrine to hold a memorial service for their ancestors. As a result, Kweon Sangha and Kweon Seop's family wielded power in Jecheon for hundreds years as the same family name group. Rural neo-Confucian literati didn't produce more elite government officials than the groups in the capital, but their growth enabled cultural development of the local community and the Joseon Dynasty.

REMARKS ON THE REIDEMEISTER NUMBER OF A G-MAP

  • Cho, Sung Ki;Kweon, Dae Seop
    • Korean Journal of Mathematics
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    • v.6 no.2
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    • pp.165-172
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    • 1998
  • For a G-map ${\phi}:X{\rightarrow}X$, we define and characterize the Reidemeister number $R_G({\phi})$ of ${\phi}$. Also, we prove that $R_G({\phi})$ is a G-homotopy invariance and we obtain a lower bound of $R_G({\phi})$.

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ON THE KNOTTED ELASTIC CURVES

  • Kweon, Dae Seop
    • Korean Journal of Mathematics
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    • v.5 no.2
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    • pp.113-118
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    • 1997
  • According to the Bernoulli-Euler theory of elastic rods the bending energy of the wire is proportional to the total squared curvature of ${\gamma}$, which we will denote by $F({\gamma})=\int_{\gamma}k^2ds$. If the result of J.Langer and D.Singer [3] extend to knotted elastic curve, then we obtain the following. Let {${\gamma},M$} be a closed knotted elastic curve. If the curvature of ${\gamma}$ is nonzero for everywhere, then ${\gamma}$ lies on torus.

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Target identification for visual tracking

  • Lee, Joon-Woong;Yun, Joo-Seop;Kweon, In-So
    • 제어로봇시스템학회:학술대회논문집
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    • 1996.10a
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    • pp.145-148
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    • 1996
  • In moving object tracking based on the visual sensory feedback, a prerequisite is to determine which feature or which object is to be tracked and then the feature or the object identification precedes the tracking. In this paper, we focus on the object identification not image feature identification. The target identification is realized by finding out corresponding line segments to the hypothesized model segments of the target. The key idea is the combination of the Mahalanobis distance with the geometrica relationship between model segments and extracted line segments. We demonstrate the robustness and feasibility of the proposed target identification algorithm by a moving vehicle identification and tracking in the video traffic surveillance system over images of a road scene.

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Effects of Intravascular Laser Irradiation on Hyperfibrinogenemia (저에너지 He-Ne 레이저 정맥내 조사(照射)(ILIB)가 고피브리노겐 혈증에 미치는 영향(影響) (임상20예를 중심으로))

  • Hwang, Woo-Joon;Kweon, O-Seop
    • The Journal of Korean Medicine
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    • v.17 no.2 s.32
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    • pp.237-244
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    • 1996
  • The purpose of this study was to investigate the effect of ILIB(Intravascular Laser Irradiation of blood) on Hyperfibrinogenemia. 20 patients with fibrinogen level of over $400mg/d{\ell}$ were treated with IUB. After !0 times' treatment, changes of fibrinogen level and clinical symptom were observed. The results were as follows: 1. Fibrinogen level was decreased in all of cases. 2. Most cases were suffered from neural symptoms(headache, palpitation, etc), circulatory symptoms (dizziness, numbness, deficiency of sensation, etc), musculo-skeletal symptoms(L.B.P, neck stiffness, arthralgia, etc.), fatigue, pollakiuria, constipation. After treatment, neural and circulatory symptoms were improved considerably.

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Fatigue Damage of Quasi-Isotropic Composite Laminates Under Tensile Loading in Different Directions

  • Kim, In-Kweon;Kong, Chang-Duk;Han, Kyung-Seop
    • Journal of Mechanical Science and Technology
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    • v.14 no.5
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    • pp.483-489
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    • 2000
  • The purpose of this work is to investigate fatigue damage of quasi-isotropic laminates under tensile loading in different directions. Low cycle fatigue tests of $[0/-60/60]_s$ laminates and $[30/-30/90]_s$ laminates were carried out. Material systems used are AS4/Epoxy and AS4/PEEK. The fatigue damage of $[30/-30/90]_s$ is very different from that of $[0/-60/60]_s$. The experimental results are compared with the result obtained from the method for determining strain energy release rate components proposed by the authors. The analytical results were in good agreement with the experimental results. It is proved that the failure criterion based on the strain energy release rate is an appropriate approach to predict the initiation and growth of delaminations under cyclic loading.

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High-Tc Superconducting Levitation Magnet (고온초전도 자기부상 마그네트)

  • Bae, Duck-Kweon;Cho, Hung-Je;Kim, Bong-Seop;Jho, Jeong-Min;Sung, Ho-Kyung;Kim, Dong-Sung
    • Proceedings of the KIEE Conference
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    • 2006.07b
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    • pp.681-682
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    • 2006
  • This paper deals with the preliminary study on the HTSC levitation magnet for MAGLEV operating in persistent current mode (PCM). The high temperature superconducting (HTSC) levitation magnet consists of two single-pancake type coils wound with Bi-2223 wire and a persistent current switch (PCS). The levitation magnet was designed by using 3-D finite element analysis. The suspension system for high-speed electrodynamic suspension (EDS) maglev should operated in persistent current mode. It is important to develop a technology to minimize the joint resistance of splice between two HTSC wires. The PCS was observed with respect to various magnitude of charging current. Based on these results, the levitation system using HTSC wire will be further studied.

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Three-Dimensional Analysis of Composite External Fuel Tank Joint (항공기용 복합재 외부연료탱크 체결부의 3차원 구조해석)

  • Uhm Won-Seop;Jung Jae Woo;Kweon Jin-Hwe;Choi Jin-Ho;Yang Seung-Un;Lee Sang-Kwan
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2004.04a
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    • pp.71-74
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    • 2004
  • A composite-aluminum hybrid joint of composite external fuel tank of an aircraft has been analyzed by a 3-dimensional finite element method. Curvature and contact of the joint structure were considered in the analysis. Yamada-Sun failure criteria was utilized for the failure evaluation. A finite element program ABAQUS was used for the nonlinear contact analysis. The joint structure was predicted to be safe in both the test and analysis.

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Adaptive Control by the Fusion of Genetic Algorithms and Fuzzy Inference on Micro Hole Drilling (미세드릴가공에 있어서 유전알고리즘과 퍼지추론의 합성에 의한 적응제어)

  • Paik, In-Hwan;Chung, Woo-Seop;Kweon, Hyeog-Jun
    • Journal of the Korean Society for Precision Engineering
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    • v.12 no.9
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    • pp.95-103
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    • 1995
  • Recently the trends toward reduction in size of industrial products have increased the application of micro drilling. But micro drilling has still much difficulty so that the needs for active control which give adaptation to controller are expanding. In this paper initial cutting condition was determined for some sorkpieces by experiment and GA-based Fuzzy controller was devised by genetic algorithms and fuzzy inference. The fuzzy inference has been applied to the various prob- lems. However the determination of the membership function is one of the difficult problem. So we introduce a genetic algorithms and propose a self-tuning method of fuzzy membership function. Based on this intelligent control, automation of micro drilling was carried out like the cutting process of skilled machinist.

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EFFECTS OF CURRENT DENSITY AND ETCHING TIME ON ETCHING DEPTH AND SURFACE ROUGHNESS OF NI-CR-BE ALLOY (전류밀도와 식각시간이 니켈-크롬-베릴륨 합금의 식각깊이와 표면조도에 미치는 영향)

  • Jeong Seong-Kweon;Jeon Young-Chan;Jeong Chang-Mo;Lim Jang-Seop
    • The Journal of Korean Academy of Prosthodontics
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    • v.40 no.4
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    • pp.323-334
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    • 2002
  • The purpose of this study is to investigate which current densities and etching times will result in an optimal etching depth and surface roughness when an Ni-Cr-Be alloy is etched with 30% perchloric acid($HClO_4$). For this study, observations were made by means of an optical three-dimensional surface roughness measuring machine and a scanning electron microscope. The etchings took place under the following conditions using current densities of $300mA/cm^2\;450mA/cm^2,\;600mA/cm^2$ and $750mA/cm^2$, and using etching time of three, five, six, seven and nine minutes. Under the conditions, the experiments reached the following conclusions. 1. When the current density is above $450mA/cm^2$ and the etching time is longer than five minutes, the etching depth increased as the current density and etching time increased. And the surface roughness was significantly influenced by the interaction of the current density and etching time. 2. Under the etching conditions of $600mA/cm^2$ and five minutes, the optimal etching depth for a resin cement space and the highest surface roughness for mechanical retention were obtained. The etching depth and surface roughness were $32.86{\mu}m$ and $7.90{\mu}m$, respectively. 3. Observations under the scanning electron microscope showed that both the corrosion at the grain boundary and the corrosion within the grain occurred on the etched surface. It was also observed that the corrosion at the grain boundary became more severe as the current density and etching time increased. In addition. at higher current densities and longer etching times general corrosion appeared.