• Title/Summary/Keyword: Inner change

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Process Design in Cold Forging of a lnner Cylindrical Pulley for Automobile Airconditioner (자동차 냉방기용 내부 풀리의 냉간 단조 공정 설계)

  • 김동진;정덕진;김병민;최재찬
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 1995.03a
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    • pp.62-70
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    • 1995
  • The inner pulley is automobile component used as airconditioner clutch assembly. in cold forging of the inner pulley . the design conditions are the same between inner length and outer length, the uniform hardness and the no shape change in inner fillet radius due toa piercing. In industries, the design of forging processes is performed based on an experience-oriented technology, that is, designer's experiences and expensive trial and error. Using the rigid -plastic finite element simulation, we propose the optimal process conditons and design of preform or redesign of final product shape without defects prodicted by metal flow, distribution fo strain, forging load during forging processes form initial workpiece to final product.

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A Study on the Transformation of Space Organization of a Traditional Houses in Kyideok Village, Jeju, Korea (제주 귀덕마을 전통가옥의 공간구조 변화에 관한 조사연구)

  • Shin, Woong-Ju
    • Journal of the Korean Institute of Rural Architecture
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    • v.12 no.2
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    • pp.67-76
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    • 2010
  • This study examined and analyzed uses, transformations, changes of plane and arrangement, and changes of space structure of housing components with traditional folk houses located at Kyideok village, Hanrim-eup, Jeju, and the results of the study can be summarized as follows. First, the exposure of arrangement of folk houses at Kyideok village, Jeju was evenly distributed to the east, the southeast, the northeast and the west in order and it was little different from the use of sunshine conditions by placing the main room on the south in traditional houses of land areas. Second, the space structure of inner room before transformation was divided into seven types. 3-room type was classified into "Sangbang-centered three-room type" and "nanggan-centered three-room type", 4-room type into "four-room type with inner access to warehouse", "four-room type with outer access to warehouse", "kitchen-divided four-room type", "four-room type with two kitchens", "four- room type with nanggan at the right back". Third, according to types of change in arrangement type, the first is new annex addition to existing inner room, the second is the removal of existing annexes including outer room, the third is the extension of inner room size without new construction of annex, the fourth is new construction of annex with new plane form after removal of existing annex, the fifth is no change in arrangement of inner room, outer room, stable, warehouse, etc. Fourth, transformation of space components led to changes of space structure as well as those of plane form. Changes of space structure were divided into reduction type of circulation to specific factors, negligence type without using increased space factor, and addition type having various circulations through the increase of convenience space.

Consideration on Human in World of Post-Heaven: Focusing on perfect man of Right I Ching (후천세계가 지향하는 인간상 탐구- 정역의 지인(至人) 중심으로 -)

  • Park, Hye-soon
    • Journal of the Daesoon Academy of Sciences
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    • v.25_2
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    • pp.103-136
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    • 2015
  • The theory of post-heaven provided Korea's many emerging national religions with spiritual ground. The I Ching originated in China emphasizes the principles of change or static aspects of world, while Right I Ching, which Il-Bu Kim suggested, underlines dynamic aspects of world. Il-Bu Kim is perceived to open a new stage in the history of philosophy of I Ching in this regard. His most remarkable contribution is the view of Great Opening Era of Post-Heaven, according to which the clock of cosmos shows the era of great change from Pre-Heaven to Post-Heaven and in the world of Post-Heaven everything will take its proper place. As to human society, Il-Bu Kim foresaw the change from disharmony to harmony, imbalance to balance and era of xiaoren to that of junzi. The advent of such a new world, however, asks human's moral revolution as a prerequisite. In the tradition of East Asian thought, human is the center of the Samjae, Heaven-Earth-Human and the only being which could participate in the growth of Heaven and Earth. Without the change of human mind, however, human can neither participate in the growth of Heaven and Earth nor expect the right change of Heaven and Earth. Even though the world of nature changes according to the principle of cosmic harmony, as the Right I Ching predicts, the real change of Heaven and Earth can be achieved only with moral change of human. The human in the Right I Ching is a free man who sticks to nothing and communicates with cosmos with empty mind. This is the very image of perfect man(至人). The perfect man in the Right I Ching is the main agent of everything, that's to say, the main agent of the great opening to Post-Heaven Era. This is the reason why most leaders of Koran emerging religions concentrate on the change of human. In this regard, Jeung-San Kang encouraged people to become the perfect man through the purification of mind and body and the great opening of inner man, depending on the metaphysical principle of the Right I Ching. Cheok and Resolution of grievances for the mutual beneficence of all life are what he suggested as a method of the great opening of inner man. Such a view is based on the thought that the accumulated sinful behaviors are obstacles to cosmic change and the time of mutual beneficience opens with the removal of the obstacles. If such religious practices are so effective, as Jeung-San Kang says, that future world could consist of perfect men who have achived the great opening of inner man, moral change, and change of consciousness, we could expect that the activities of xiaoren will be shrinked and junzi will be welcomed, as the Right I Ching predicts.

A Study of Phosphate Adsorption on Kaolinite by $^{31}$P NMP Spectroscopy ($^{31}$P NMR을 이용한 카올리나이트에 흡착된 인산염의 연구)

  • 김영규
    • Journal of the Mineralogical Society of Korea
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    • v.13 no.4
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    • pp.186-195
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    • 2000
  • To study phosphate adsorption on kaolinite, $^{31}$ P MAS NMR(magic angle spinning nuclear magnetic resonance spectroscopy)has been used for kaolinite reacted in 0.1 M phosphate solutions at pH’s from 3 to 11. There are at least 3 different forms of phosphate on kaolinite. One is the phosphate physically adsorbed on kaolinite surface (outer-sphere complexes) or species left after vacuum-filtering. The second is the phosphate adsorbed by ligand exchange (inner-sphere complexes), and the third is Al-phosphate precipitates which are pH dependent. Most of the inner-spherer complexes and surface precipitates are mainly on hydroxided Al(aluminol) rather than hydroxided Si(silanol). These are pertinent with the results obtained from the phosphate adsorption experiments on silica gel and ${\gamma}$-Al$_2$O$_3$ as model compounds, respectively. The two peaks with more negative chemical shifts(more shielded) than the ortho-phosphate peak (positive chemical shift) are assigned to be the inner-sphere complexes and surface precipitates. The $^{31}$ P chemical shifts of the Al-phosphate precipitates are more negative than those of inner-sphere complexes at a given pH due to the larger number of P-O-Al linkages per tetrahedron. The chemical shifts of both the inner-sphere complexes and surface precipitates are more negative than those of inner-sphere complexes at a given pH due to the larger number of P-O-Al linkages per tetrahedron. The chemical shifts of both the inner-sphere complexes and surface precipitates become progressively less shielded with increasing pH. For the inner-sphere complexes, decreasing phosphate protonation combined with peak averaging by rapid proton exchange among phosphate tetrahedra with different numbers of protons is though to be the reason for the peak change. The decreasing shielding with increasing pH for surface precipitates is probably due to the decreasing average number of P-O-Al linkages per tetrahedron combined with decreasing protonation like inner-sphere complexes.

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A Qualitative Single Case Study on Change in Interactive Bibliotherapy Experience with A Middle-aged Widowed Spouse (배우자 사별 중년여성의 상호작용적 독서치료 경험에서 나타나는 변화에 대한 질적 단일 사례연구)

  • Park, Jung-Ae;Lee, Myng-Woo
    • Journal of Korean Library and Information Science Society
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    • v.46 no.4
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    • pp.299-324
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    • 2015
  • This paper is a qualitative single case study and it was conducted for the purpose to explore change in interactive bibliotherapy experience with a middle-aged widowed spouse. A Middle-aged Widowed Spouse was taken as a research partaker. Through this research, we explored partitively the partaker's experience changes by each session during the commencing of interactive bibliotherapy and the partaker's inner/external experience change after the end of session. The result, interactive bibliotherapy facilitated and expressed the reaction of a partaker by its writing skills and reading materials including partaker's own poems. Furthermore, facilitated emotion from material and self-awareness made a partaker understand and accept itself through therapeutical interaction. In addition, those kind of changes appeared inner/external experience in life, and lasted after the end of the session. In this regard, the inner/external change appeared from a partaker means the effect of bibliotherapy, and we can notice that it is a result that facilitated through truthful reaction of counselor and texts.

A Study on the Characteristic of Internal Changing of Departments after Establishment in General Hospital - Focused on the KS Hospital - (국내 종합병원의 건립후 나타난 부문별 내부변화 특성에 관한 연구 - KS 병원의 사례를 중심으로 -)

  • Cho, Jun-Young;Yang, Nae-Won
    • Korean Institute of Interior Design Journal
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    • v.17 no.2
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    • pp.75-82
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    • 2008
  • Weeks who is an architect in England suggest that let us consider the hospital architecture as not determined architecture but an undetermined architecture. Because it has been changing unexpectedly. The changing process of hospital architecture is required that it has to involve the new function and be a role model because of variations of environmental factors. For silving the requirements above mentioned, hospital architecture takes the way of appropriateness inner origin form and finally it considers new formation. The 53% of hospital buildings in Korea were built in 1980s. For 30years, these buildings have been not only extended a buildings but also changed in parts of functions and sizes on buildings which are original. The purpose of this study is producing the basic references which suggest solution to face on the changing of hospital building during planning it in the future using by analysis of variation inside the hospital building and grasping of characters in each departments. Each department is analyzed as follows. There is no inner change but only expansion partly by enlargement of building. In the outpatient, there is not only expansion by enlargement of building and but also extension toward other parts and the rate of variation of inside is high. In the diagnostic treatment, there are differences in diagnostic treatment. Surgical suit and diagnostic imaging have been expanded by enlargement than the change of inside. But the others of the departments have been changed by change of inside and also there are sometimes changes of inner walls.

The study on the thickness change in burring with stainless 409L (스테인리스 409L 버링가공 시 두께변화에 대한 연구)

  • Kim, H.J.;Ryu, H.Y.;Kim, H.J.;Kim, D.G.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2009.06a
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    • pp.107-108
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    • 2009
  • This study is focused on the thickness change in burring with stainless 409L according to the change of main design variables and forming conditions, to manufacture the automobile exhaust flange. Large plastic deformations by burring process decreases thickness of inner radius and occurs cracks. The optimal design of performs by the finite element analysis achieves adequate improvement of thickness decrease.

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Analysis of Chemical Compositions and Energy Contents of Different Parts of Yellow Poplar for Development of Bioenergy Technology

  • Myeong, Soo-Jeong;Han, Sim-Hee;Shin, Soo-Jeong
    • Journal of Korean Society of Forest Science
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    • v.99 no.5
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    • pp.706-710
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    • 2010
  • Understanding of chemical composition and energy contents in tree is important to develope strategies of renewable energy policy to cope with climate change. Residual biomass as renewable energy source was evaluated and focused on the bark-containing branches. Chemical analysis studies were conducted for different part of yellow poplar (Liriodendron tulipifera), which were partitioned to inner bark, outer bark, small branches, medium branches, big branches and trunk. The variations in hydrophobic extractives, hydrophilic extractives, lignin, carbohydrate compositions, energy contents (higher heating value) and the ash content were determined. The inner and outer bark had higher ash content, hydrophobic and hydrophilic extractives content, and higher energy content than those of tree trunk. Polysaccharides content in inner and outer bark was quite lower than those of stem or branches. Based on the energy content of residual biomass, replacement of fossil fuel and greenhouse gas emission abatement were calculated.

A Numerical Study on Sectional Temperature Distribution and Heat Recovery Amount of Passive Ventilation Skin (패시브환기외피의 단면온도분포 및 열회수량에 관한 수치해석적 연구)

  • Lee, Tae-Cheol;Son, Yu-Nam;Yoon, Seong-Hwan
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.24 no.10
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    • pp.705-710
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    • 2012
  • This study aims to analyse changes of inner temperature of PVS(Passive ventilation skin) and heat recovery when it has ventilation of air through PVS using numerical simulation in the winter condition. Results are as follows. 1) In case of the air inflows through PVS, change of inner temperature of PVS is lower than in case of the air flows inner space to out space, by dynamic insulation. 2) It was identified that the temperature gradient of PVS were bigger by increases of ventilation amount. To reduce ventilation load, heat transfer efficiency at the inner side of PVS is important and what performance of insulation at the inner side of PVS secure helps to improve heat performance of all PVS.

ACSR Inner Corrosion Detection by Eddy Current Sensor (와전류센서를 이용한 ACSR 전선의 내부부식 검출)

  • 강연욱;강지원;양병모;정재기
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.12 no.1
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    • pp.12-19
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    • 1998
  • This paper deals with ACSR(Aluminum Conductor Steel Reinforced) inner corrosion detection using a detector which automatically runs on an ACSR distribution line and inspects the inner corrosion of the conductor by utilization of the nondestructive eddy current test. According to corrosion appearance and development of ACSR, the impedance change of the eddy current coils is theoretically verified. And then specifications and performances of the detector are described. Experimental procedures and desirable test results are reported. In conclusion, this detector can realize the nondestructive detecting of an ACSR inner corrosion. Upgrading the maintenance efficiency and improving the reliability of distribution line, whether is covered with insulating materials or not, would be expected by this nondestructive test method.method.

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