• 복식
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• 제57권10호
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• pp.60-73
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• 2007

This Study is on the excavated clothing from lady Lee' tomb in spring 2003, on Chungjoo Province. These are significant as the 18th century's real clothing, we examine the real Jegories as possible and the results shows there are two group in sizes. we regard the large Jegori is for the dead as a shroud, the small one is for daily. it shows that Jegori for the dead is about 1.3 larger than a daily one, we can see Jegori for the dead was going to be large from the 18th century, and it's needlework was not fine than daily one, but the Color and the material on should look like as daily in this time, and the motif is cloud pattern, we can see two changes in daily Jegori that one thing is to be short and narrow, the other is to be curve at the corner of collar(Gitmuri), the corner of edge(supco), the below line of sleeve(baerae) in the daily Jegori.

• 대한기계학회논문집B
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• 제20권11호
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• pp.3573-3588
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• 1996

The flow through a centrifugal compressor impeller was calculated using the 3-dimensional Navier-Stokes solution method. A control volume method based on a rotating curvilinear coordinate system was used to solve the time-averaged Navier-Stokes equations, and a standard k-.epsilon. model was used to obtain eddy viscosity. Numerical results and experimental data were compared for the overall performance of the impeller, the pressure distributions along the shroud wall and the detailed flowfields at the design and off-design conditions, which showed good coincidence. The flow through the impeller is complex with the curvature of the streamlines and rotation. The development of secondary flows and the jet-wake flow characteristics, which is the main source of flow loss, was discussed. Calculation results show quite different patterns as the flow rate changes.

• 대한기계학회논문집B
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• 제24권8호
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• pp.1029-1037
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• 2000

The present study investigates the local heat/mass transfer characteristics on a rotating disk which is the top disk covered with a shroud in HDD. The naphthalene sublimation technique is employed to determine the local heat/mass transfer coefficients on the rotating disk. Flow field measurements using Laser Doppler Anemometry (LDA) and numerical calculations are performed to analyze the flow patterns induced by the disk rotation. HDD has been developed for compactness and speedy data access, thus the rotating velocity of the disk is increased and the height of a hub is decreased. The experiments are conducted for the various hub heights of 5, 10 and 15 mm, for the rotating Reynolds numbers of $5.5{\times}10^4$ to $1.1{\times}10^5$ and for the effects of the presence of a read/write head arm. The results show that the heat transfer on the rotating disk is enhanced considerably for the decrease of the hub height and for the increase of the rotating Reynolds number. The head arm inserted in the cavity decreases the heat transfer despite the enhancement of tangential RMS velocity because of the deficit of the momentum in the flow field.

• The International Journal of Costume Culture
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• 제6권1호
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• pp.52-60
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• 2003

The purpose of this study was to examine the cases of the head family's costume culture and to apply them to field experience education of adolescent's home economics subject. To examine costume culture, women in the two head families in the Hampyeong area, Jeollanam-do were interviewed. The findings had unique shroud making and custom in the Mo's head family of Hampyeong. Also it was found that the eldest daughters-in-law of the Lee's of Hampyeong have horizontally exchanged the information of the head family's costume with village women of the same family. They have initiated their costume culture directly through their daughters and it had the great influence on after-ages. The Spot experience program for adolescent to experience the head family's costume culture and life culture consisted of four subjects:(l)Educating the head family's traditional living culture including etiquette training, (2)head family village walk, (3)experiencing the head family's clothes life including natural dyeing and sewing, and (4)a field trip of Hampyeong Local Life Culture Museum. For a model experience of the head family's costume and life culture, three families with middle and high schoolers participated in 8- hour experience learning program.

• 대한기계학회논문집
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• 제17권6호
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• pp.1633-1639
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• 1993

본 연구에서는 급속연소기술의 가솔린엔진에 적용을 목적으로 흡입과정시 강한 와류(swirl)를 생성하는 마스크부착 헤드(masked shroud head, MSH)형을 급속연 소형으로 제작하여 마스크부착 헤드형에서의 급속연소효과를 이온전류법에 의한 화염 속도를 측정하므로서 규명하려한다. 이온전류는 이온탐침계(ion probe)를 연소실 표면의 두 지점에 설치하여 검출하며, 이온전류 신호를 정성적인 방법으로 검증한 후 표준 헤드형과 마스크부착헤드형을 장착한 엔진에 대해서 화염전파 속도를 비교 측정 한다. 측정된 화염 전파속도는 정확한 연소특성 분석을 위해 각 사이클에서의 값을 표본으로 하는 통계적 방법으로 처리한다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2014년도 추계학술대회 논문집
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• pp.99-101
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• 2014

A Comprehensive Vibration Assessment Program (CVAP) for steam generator internals (SGI) of Advanced Power Reactor 1400 (APR1400) is being performed in accordance with the United States Nuclear Regulatory Commission (U.S. NRC) Regulatory Guide 1.20 (RG 1.20) revision 3. This paper studies the vibration characteristics of moisture separator assembly as part of the vibration and stress analysis program for APR1400 SGI CVAP. The natural frequencies, mode shapes, and structural behavior of moisture separator assembly were investigated through modal analysis using finite element method and experimental measurement. Since the moisture separator consists of several items with complicated shape, an idealized shell model was used in the finite element analysis. Group of local modes caused by moisture separators and significant modes of shroud and separator support plate were identified. The results of this paper are to be utilized in the structural response analysis of moisture separator assembly.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2014년도 추계학술대회 논문집
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• pp.399-401
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• 2014

The comprehensive vibration assessment program(CVAP) of APR+ nuclear power plant(NPP) is classified as non-prototype, category II with Palo Verde NPP as valid prototype. In this paper, CVAP for first plant of APR+ NPP is proposed. The Control Element Assembly(CEA) shroud of APR+ NPP is different from that of Palo Verde NPP. And the Core Support Barrel(CSB) outer diameter and the flow rate of normal operation of APR+ NPP are larger than those of Palo Verde NPP. Vibration and stress analysis program should be conducted to establish test acceptance criteria. Limited vibration measurement program should be implemented to establish the margin of safety, demonstrate the satisfaction of test acceptance criteria and confirm the similar vibratory response between the APR+ and Palo Verde NPP. Because of the change of normal operation condition, the nominal differences between APR+ and Palo Verde NPP in the structural and hydraulic analysis are studied to determine the measurement locations.

• 한국의류학회지
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• 제20권3호
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• pp.527-537
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• 1996

This study tries to understand the characteristics of a man's clothes from the late 17th century to the early 18th century, held by the Ewha Womans University Museum. The author adopted the Assy CAD, an apparel CAD system developed by Assysit Company of Germany, in measuring clothes which is intended to solve the problems raised in the previous measurement of clothes, as well as in the making of patterns. The author used tracing paper to make copies of the curved parts, put them into the computer by digitiger, and made the patterns for more accurate restoration. Furthermore, the author compared Lee Hwang's with the contents of the related literature and excavated apparel from other tombs. As a result, Chopri among Lee Hwang's clothes, retained the typical characteristics of the mid-Chosun men's fashion in its ratio of bodice to skirt, form of sleeves, and size of breast- ties for fastening which appeared in the 17th century. Daechangeui and Jungchimak also were distinctive for Changot and the width of sleeves since the 17th century and were in wide use not only as the daily clothes but also as the shroud. These changes were brought about from the two wars which emphasized prestige and beauty of the clothes rather than their functions. As a result, Changeuis were used more widely, while Chopri which was used as the underwear of officials' uniform, was in decline.

• 한국유체기계학회 논문집
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• 제5권2호
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• pp.29-35
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• 2002

The present study is concerned with the flow patterns induced by various impellers in a rectangular tank. Impellers are FBT (Flat blade turbine), PBT (Pitched blade turbine), Shroud turbine, Rushton turbine, and Helical ribbon turbine types. The solutions of flows in moving reference frames require the use of 'moving' cell zone. The moving zone approaches are based on MRF (Multiple reference frame), which is a steady-state approximation and sliding method, which is an unsteady-state approximation. Numerical results using two moving zone approaches we compared with experiments by Ranade & Joshi, which have done extensive LDA measurements of the flow generated by a standard six-bladed Rushton turbine in a cylindrical baffled vessel. In this paper, we simulated the flow patterns with above-mentioned moving zone approaches and impellers. Turbulence model used is RNG $k-{\epsilon}$ model. Sliding-mesh method is more effective than MRF for simulating the rectangular tank with inlet and outlet. RNG $k-{\epsilon}$ model strongly underestimates the velocity of experimental data and velocity by Chen & Kim's model, but it seems to be correctly predicted in overall distribution.

• 박물관보존과학
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• 제6권
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• pp.17-29
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• 2005

출토복식(出土服食)이란 시신이 매장될 때 염습의 등과 함께 부장되는 것으로 발굴이나 이장 시 발견되는 피복류 일체를 말한다. 유물은 시신과 함께 땅속에서 지속적인 열화과정을 거쳤기 때문에 발견 당시 형태가 온전하더라도 매장환경과 다른 새로운 환경으로 인해 손상을 초래할 수 있다. 특히 미생물 번식이 용이하므로 수습 때부터 적절한 보관과 보존처리가 필요한 상황이다. 그러나 최근 급격한 국토개발 등으로 급증하는 출토복식은 인식과 전문처리인 부족으로 응급 보존처리 실시 예가 매우 적다. 이에 출토복식에 대하여 본 실험실에서 실시한 과학적 조사와 응급보존처리를 중심으로 서술하고자 한다.