• Title/Summary/Keyword: figure

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An Analysis of the Figure of Merit depending on the cut-off size of a Small Reflector for Satellite Broadcast Receiving Antenna (위성방송 수신용 소형 반사면 안테나의 절단 크기에 따른 성능지수의 분석)

  • Lim, Gye-jae
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.6 no.3
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    • pp.152-155
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    • 2013
  • In this paper, the reduction of the figure of merit depending on the increased spill-over when the parabolic reflector is cut off partially for low-profile configuration in the satellite broadcast receiving antenna is analyzed. Also for the accurate analysis and simulation, it is considered that the noise temperature is increased due to the effect of ground thermal noise toword the sidelobes and back lobes when the antenna is tracked from $0^{\circ}$ to $60^{\circ}$ in elevation angle, and that the total noise temperature is increased because to the noise figure of LNA. As the results, noise temperature is increased up to about 15K and G/T ratio is decreased to about 2.5dB, when the reflector is cut 35% off partially.

Analysis of Upper Torsos Replicas of Elderly Women for Bodice Pattern

  • Shin, Hae-Kyung
    • International Journal of Costume and Fashion
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    • v.3
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    • pp.13-24
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    • 2003
  • The purpose of this study was to examine the changes brought by the upper body form using a three-dimensional human body measurement the gypsum method. The developed plane figure was constructed using paper replica to analyze the dimensional shape of the upper torso and to be able to design clothes suitable for elderly women's physical characteristics. The characteristics are analyzed and compared with existing patterns in order to extract the components for the pattern design. The examination was carried out based on the developed plane figures of upper body surface replicas. Type 1, the bent-forward body form, has a wide gap on the shoulder. In Type 2, the gap of waist line was wide at angulus scapulae point. Type 3 was the thin body form, and the girth of the chest, front interscye breadth and back interscye breadth were more level with one another, compared to the other types. In Type 4, the bent-backward body form, there was a wide gap on front shoulder. Comparison with the developed plane figure and existed pattern, items revealed differences in significance included the front and back interscye width between the measured values of the existed patterns and the developed plane figure. Therefore, the basic components of basic bodice pattern for old women were determined in the up-bust circumference and length of the back.

Factors Relating to Social Physique Anxiety in Adolescent Girls (청소년기 여학생의 사회적 체격불안 관련 요인)

  • Lee, Eun-Joo
    • Women's Health Nursing
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    • v.14 no.2
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    • pp.93-103
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    • 2008
  • Purpose: This descriptive study was to explore the factors relating to Social Physique Anxiety(SPA) in the adolescent girls(N=700). These factors included the biological(level of school[age], period of menstruation, and BMI), the sociocultural(Influence of Mass Media, [IMM], Stereotype of Ideal Female Body[SIFB], type of school, perceived figure, and ideal figure) and the BW control-related factors(experience of bodyweight [BW] control, satisfaction at the result of BW control, and motive of BW control). Method: The sample was 700 girls of the middle and high schools in Jeju-do. The data was collected by the self-reported questionnaire and processed with the SPSS Win 12.0 program. Result: 26% of the variance in SPA was explained by the biological factors(level of school) and the sociocultural factors (perceived figure, ideal figure, type of school, and IMM). SPA, IMM, and SIFB were significantly correlated with each others(r=1,65-2.92, p<.05). The mean SPA scores according to BW control-related factors were significantly different. Conclusion: This results suggest that media education is necessary to reduce or eliminate the adolescent girl's SPA. In addition, SPA needs to be considered as the important concept for the future nursing researches and interventions related to BW control.

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Domestic Use of Wood for Furniture and Woodcraft Materials Characteristics Evaluation (I) - Focusing on Pinus densiflora and Pinus densiflora for. erecta Uyeki Wood - (국내산 주요 수종의 가구 및 목공예재 활용을 위한 특성 평가 (I) - 금강송과 소나무를 중심으로 -)

  • Park, Byung Ho;Hee, Jo Won;Kim, Nam Hun
    • Journal of the Korea Furniture Society
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    • v.25 no.1
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    • pp.36-44
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    • 2014
  • This study was investigated to sensible characteristic and physical characteristic to estimate value of the craft for Pinus densiflora and Pinus densiflora for. erecta Uyeki wood. The sensual characteristics of wood are evaluated by wood figure, wood grain, odor, and the physical characteristics by weathering, abrasion, surface roughness and hardness. The wood figure of these species were observed at flat grain in the radial section and edge grain in the tangential section. Also, burl's figure was observed in Burl of Pinus densiflora wood. Pinus densiflora for. erecta Uyeki wood had volatile aroma compounds such as Camphene, Thymyl ether, ${\alpha}$-Longipinene, etc. Pinus densiflora wood had volatile aroma compounds such as ${\alpha}$-Longipinene, (+)-Cedrol, etc. The moisture soption, abrasion, hardness and roughness were very different between the two species.

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Compensation Characteristics of 40 Gbps Optical Pulses Depending on Figure of Merit of Dispersion Compensating Fiber (분산 보상 광섬유의 성능 지수에 따른 40 Gbps 광 펄스의 보상 특성)

  • Lee, Seong-Real
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.729-731
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    • 2013
  • The compensation characteristics of 40 Gbps optical signals depending on figure of merit (FOM) of dispersion compensating fiber with dispersion coefficient of -125 ps/nm/km are investigated in this research. Simulation results show that the more fiber span number and launch power increase, the more the effects of FOM of DCF on the compensated signals increase. However, it is also confirmed that the more the effects of optical nonlinearity increase, the more FOM decrease.

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Pattern Development of Figure Skating Wear for Schoolgirls (학령기 여아를 위한 경기용 피겨 스케이팅복 패턴 설계에 관한 연구)

  • Park, Sanghee
    • Journal of Fashion Business
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    • v.18 no.2
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    • pp.54-65
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    • 2014
  • This study developed basic pattern for competition figure skating wear for school girls. Figure skating wears are difficult for making basic patterns based on standard size chart, because girls' body size are slimmer and more slender compared to the general girl's and the competition wears such as, swim suit with sleeves are, closely in contact with the player's body. The competition wears for school girl was made with consideration of changing of the body shape, physical exercises, and various specificities according to stretch material. To raise artistic effect while doing beautiful motions, and to assist in facile technique motions, competition wears need to have enough ease on the side line from waist to armpit, from armpit to wrist, and in trunk girth including crotch girth. Also, to stand out in beauty, a costume designing has a proper skirt position, length, flare width, and a tight bodice according to the player's body proportion. Most of the customers are displeased at the high price, unfitness of size, insufficient design, and difficulty in access, since they are not sold in sporting goods store. Therefore, a competition wear's basic pattern was made through scientific and emotional process including concerns on material properties, room for activities, and ideal body proportion. Systemizing the basic patterns of production method will solve high repairing expenses, unsuitable sizing, and improve accessibility for purchase.

A Study on the Binding Force of Drawbead in the Sheet Metal Forming Process through the finite element and experimental analysis (해석과 실험을 통한 박판성형공정에서의 드로오비드의 구속력에 관한 연구)

  • Bahn, Gab-su;Mo, Chang-ki;Suh, Eui-kwon
    • Journal of the Korean Society of Industry Convergence
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    • v.10 no.1
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    • pp.5-14
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    • 2007
  • It is necessary for development of drawing product with press to have suitable material selection & all process design and the problem during press process has been cleared from judgement of experience & trial and error. Recently we can estimate press process result from computer aided design & FEM. But we can get more reliable result when we can put more precise process variants during FEM. In case of using a drawbead that is used for the material inflow, it is considered for us to put material property, other analysis condition & friction figure when material is passing through the drawbead for better FEM. From our study, we have drawn an analogy bead connection depth, friction figure & drawing and restraining load according to kinds of lubrication from experiment & FEM for the drawbead. We applied above result to the drawing experiment & FEM and confirmed the validity. We could notice the relation between friction figure & drawing load and the friction figure variation according to kinds of lubrication. It is expected to draw more precise analogy that can be used for real process due to more precise process variants application to FEM.

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Application of Inverse Pole Figure to Rietveld Refinement: II. Rietveld Refinement of Tungsten Liner using Neutron Diffraction Data

  • Kim, Yong-Il;Lee, Jeong-Soo;Jung, Maeng-Joon;Kim, Kwang-Ho
    • The Korean Journal of Ceramics
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    • v.6 no.3
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    • pp.240-244
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    • 2000
  • The three-dimensional orientation distribution function of a conical shaped tungsten liner prepared by the thermo-mechanical forming process was analyzed by 1.525$\AA$ neutrons to carry out the Rietveld refinement. The pole figure data of three reflections, (110)(220) and (211) were measured. The orientation distribution functions for the normal and radial directions were calculated by the WIMV method. The inverse pole figures of the normal and radial directions were obtained from their orientation distribution functions. The Rietveld refinement was performed with the RIETAN program that was slightly modified for the description of preferred orientation effect. We could successfully do the Rietveld refinement of the strongly textured tungsten liner by applying the pole density of each reflection obtained from the inverse pole figure to the calculated diffraction pattern. The correction method of preferred orientation effect based on the inverse pole figures showed a good improvement over the semi-empirical texture correction based on the direct usage of simple empirical functions.

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Ethnobotanical Studies of Gangwon-do: A Comprehensive Research of the Province and Data Analysis

  • Kim, Young-sil;Chung, Jae-min;Kim, Young Dong
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2018.04a
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    • pp.70-70
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    • 2018
  • As science and technology has developed, human could be flourished especially at the aspect of agriculture and medicine. However, the traditional knowledge of them has stopped being used, which leads to extinctions of it. Korea National Arboretum had surveyed the ethnobotanical uses of Gangwon-do from 2006 to 2017. 522 taxa were defined as ethnoplants through 21469 sheets thanks to 355 respondents who composed 279 females, 73 males and three refused to answer. Analysis of ethnoplants had conducted to provide the excavation of the new plants for industries of agriculture and medication, as well as the evidence for protection of TK and benefit derived from it. Aster scaber Thunb. had been found as the most citated taxa by 0.6591 RFC figure, Pinus desiflora Seibold & Zucc. was found to have the extensive categories of use. Aralia elata (Miq.) Seem. showed the highest figure of CI value. In the index of RI, Pinus desiflora Seibold & Zucc. appeared again, as well as CV, cultural value. For evaluation of the usages of ethnoplants IAR figures are analyzed. The fiber has shown the biggest figure of IAR, despite the dyes are placed the smallest figure.

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A Study on the Chemical Properties and Strength Development of Regional Hwangto (지역별 황토의 화학적 특성 및 강도발현에 관한 연구)

  • Hwang, Hey-Zoo;Kim, Jeong-Gyu;Yang, Jun-Hyuk
    • KIEAE Journal
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    • v.6 no.2
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    • pp.11-18
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    • 2006
  • In this research, Conducting an engineering properties experiment, this study examined basic properties of regional Hwangto. The results of experiments are as followings. 1) This study confirmed that a result of examining lime order for Hwangto and comparison of stimulants, this study confirmed that 28 day's strength promotion is found in case of calcium hydroxide(Ca(OH)2) and calcium chloride(CaCl2) stimulant. Finally, it is known the fact that lime highly improves the weak strength of Hwangtoh. 2) As XRD analysis for proving the strength manifestation principle of Hwangto by regions, CSH figure and CASH figure appeared in each regional Hwangto in all the strength areas. This result could be appeared through hydraulicity from reaction of alkali stimulant and water, and pozzolan reaction(CSH figure) and $Str{\ddot{a}}tlingite$ reaction(CASH figure) by silica (SiO2) ingredient and calcium hydroxide (Ca(OH)2) among ingredients of clay, and alumina(Al2O3). 3) In result of strength analysis, It is knowned that the Gyeongsangdo Hwangto is stronger than the Jeollado Hwangto in reactivity.