• Title/Summary/Keyword: filling body

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Improvements of Pulse Doppler Gap Filling Algorithms for Portable Medical Ultrasound Imaging System (휴대용 초음파진단기를 위한 펄스 도플러 갭 필링 알고리즘의 개선)

  • Bae, MooHo;An, Hyung-Jun
    • The Journal of the Acoustical Society of Korea
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    • v.31 no.8
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    • pp.580-589
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    • 2012
  • In this paper, we studied on Doppler gap-filling algorithms suitable for a portable or low-cost medical ultrasound imaging system, and as a result, found out algorithms based on mirroring or autoregressive model. Moreover, controlling the computational demand in the proper range, we improved the performances of these algorithms by solving their problems. Effectiveness of these modified algorithms is verified by computer simulations and experiments which used artificially generated Doppler signals and Doppler data acquired from human body through an actual ultrasound system.

Studies on the Thermal Insulation Effect of Bedding (II) - Thermal Insulation Effect of Quilt - (이부자리의 보온력에 관한 연구(II) -이불의 보온력 -)

  • Lee Song-Ja;Sung Su-Kwang
    • Journal of the Korean Society of Clothing and Textiles
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    • v.16 no.4 s.44
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    • pp.349-355
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    • 1992
  • Comfortable sleeping largely depends on human mental state, physical condition, the temper. ature and humidity in bedrooms, and qualities of quilt and bedcover. Of the qualities of quilt, thermal insulation effect plays the most important role in keeping bedroom in ample temperature and preventing human body from giving off heat. In the present study, which is a sequel study to research on the thermal insulation effect, the real-size quilts with the following items of filling materials in them are designed to research on the variation of each item, and to measure the effect of the weight variation in inner covers on the thermal insulation effect of quilts, the results are as follows: 1. The coefficient between the weight of filling materials and the thermal insulation effect of quilt is shown to be a significant $0.91\~0.97$. 2. The thermal insulation effect of the quilts with in size of $0.5\;Kg/m^{2}$ is surveyed to be high in order down > polyester > cotton > wool. 3. The effect of the texture of inner covers on the thermal insulation effect of quilt is shown to be ignorably low. 4. The weight of filling materials is shown to be in correlation with the thermal insulation effect of quilts, and the estimated regression line has been obtained.

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Optimal Control of Chill layers through Regulation of Temperature on Shot Sleeve in Aluminum High Pressure Diecasting (Al고압주조공법에서 사출슬리브 온도 조절을 통한 Chill layer의 최적 제어)

  • Park, Jin-Young;Kim, Eok-Soo;Park, Yong-Ho;Park, Ik-Min
    • Korean Journal of Materials Research
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    • v.16 no.11
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    • pp.698-704
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    • 2006
  • In this study, the effect of chill layers occurred in shot sleeve on the molten metal filling was analyzed through computer simulation. The behavior of chill layers with temperature variation of shot sleeve set from 200 to $280^{\circ}C$ was also investigated. The simulation results showed the chill layers set in the in-gates during the injection process change the main filling direction and cause turbulent flow pattern, resulting in porosities inside the castings. The amount of chill layers with the increasing temperature of shot sleeve was considerably reduced. Particularly, at the setting temperature of $280^{\circ}C$ by heat control unit, the biggest reduction in chill layers, excellent trimmed surface and the highest density were achieved, suggesting that as the optimal sleeve condition in aluminum high pressure diecasting, especially for highly complex parts like valve body.

A Sector-Labeling for generating the Hilbert Space-filling Curve and Its Intention

  • Slamet, Santosa;Naoi, Tohru
    • Proceedings of the IEEK Conference
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    • 2002.07a
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    • pp.38-41
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    • 2002
  • Many scientifc applications include manipulation of data points tying in a space. We describe a method, based on sector labeling to generate a space-filling curve for partitioning such given data points. Our method is straightforward and flexible, equipping a one-one correspondence between point-values on the curve and data points in space in more efficient than designated methods found in the literature. It is widely believed that the Hilbert curve achieves the desired properties on linear mappings due to the locality between data points. Therefore we focus on the Hilbert curve since, later on, we identify it as the most suitable for our application. We demonstrate on using our method for the data particles of an n-body simulation that based on Barnes-Hut algorithm.

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A Study on the Suitability of Sifting System for Children′s Clothing - focused on the Tween Generation from fifth grade to eighth grade - (트윈세대(Tween Generation) 아동복의 치수적합성에 관한 연구 -초등학교 5, 6학년, 중학교 1, 2학녕을 중심으로-)

  • 김은경;최혜선;강여선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.5
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    • pp.691-702
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    • 2002
  • The purpose of this study was to provide basic information on the propriety of the ready to wear garment sizes of Tween Generation(ages from 5th grade to 8th grade) who has different clothing preferences in color, styles, and design and also different body sizes and shapes from younger and older students. The objectives of the study were to ascertain (a) the body figure changes occurring during Tween Generation; (b) the coverage of manufactures'garment sizes. The body measurements of elementary school students(5th & 6th grades) and junior high school students(7th & 8th grades) provide the basic statistics for this study. The mean differences of each size within each figure type are compared by using t-teats. The differences in various manufacturers'apparel sizing and figure size are investigated. Also the body measurements and the apparel sizes of the manufacturers are compared in order to evaluate the suitability of the garment size. Results indicate that the body type factors are different in each age group. And manufactures'sizes come out to be much smaller than the actual body measurements. Young casual wear can cover junior high school students satisfactorily but for elementary school students, because of low drop-value, the overall satisfaction with filling is low.

Numerical Simulation of Failure Mechanism of PELE Perforating Thin Target Plates (얇은 표적체판에 천공하는 PELE 의 파괴 메커니즘 수치시뮬레이션)

  • Jo, Jong Hyun;Lee, Young Shin
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.36 no.12
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    • pp.1577-1583
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    • 2012
  • Penetrator with enhanced lateral effect (PELE) is a novel projectile that does not require dynamite and a fuse. It comprises a high-density jacket that is closed at its rear end and filled with a low-density filling material. To study the explosion characteristics of PELE using AUTODYN-3D code, the calculation models of the projectile body and the bullet target were developed and the process of penetrating an aluminum-2024 alloy target using PELE was simulated. The scattering characteristics after PELE penetrated the aluminum-2024 alloy target were studied for different filling materials. The explicit finite element analysis of PELE fragmentation was implemented with the stochastic failure criterion in AUTODYN-3D code. As the filling expanded, the fragments gained velocity and dispersed laterally, increasing the damage area considerably. The number and shape of PELE fragments differed depending on the impact pressure of the filling that fragmented during the penetration and lateral dispersion processes.

Optimization study on roof break direction of gob-side entry retaining by roof break and filling in thick-layer soft rock layer

  • Yang, Dang-Wei;Ma, Zhan-Guo;Qi, Fu-Zhou;Gong, Peng;Liu, Dao-Ping;Zhao, Guo-Zhen;Zhang, Ray Ruichong
    • Geomechanics and Engineering
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    • v.13 no.2
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    • pp.195-215
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    • 2017
  • This paper proposes gob-side entry retaining by roof break and filling in thick-layer soft rock conditions based on the thick-layer soft rock roof strata migration law and the demand for non-pillar gob-side entry retaining projects. The functional expressions of main roof subsidence are derived for three break roof direction conditions: lateral deflection toward the roadway, lateral deflection toward the gob and vertically to the roof. These are derived according to the load-bearing boundary conditions of the main roadway roof stratum. It is concluded that the break roof angle is an important factor influencing the stability of gob-side entry retaining surrounding rock. This paper studies the stress distribution characteristics and plastic damage scope of gob-side entry retaining integrated coal seams, as well as the roof strata migration law and the supporting stability of caving structure filled on the break roof layer at the break roof angles of $-5^{\circ}$, $0^{\circ}$, $5^{\circ}$, $10^{\circ}$ and $15^{\circ}$ are studied. The simulation results of numerical analysis indicate that, the stress concentration and plastic damage scope to the sides of gob-side entry retaining integrated coal at the break roof angle of $5^{\circ}$ are reduced and shearing stress concentration of the caving filling body has been eliminated. The disturbance of coal mining to the roadway roof and loss of carrying capacity are mitigated. Field tests have been carried out on air-return roadway 5203 with the break roof angle of $5^{\circ}$. The monitoring indicates that the break roof filling section and compaction section are located at 0-45 m and 45-75 m behind the working face, respectively. The section from 75-100 m tends to be stable.

Development of Bladder Phantom and Image Evaluation of Lesion in the Vicinity according to Filling and Empty Bladder (방광 팬텀 제작을 통한 충만여부에 따른 방광 주변 병변에 대한 영상 평가)

  • Park, Chan-Rok;Kim, Jae-Il;Lee, Hong-Jae;Kim, Jin-Eui
    • The Korean Journal of Nuclear Medicine Technology
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    • v.20 no.1
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    • pp.24-27
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    • 2016
  • Purpose In this study, we evaluated image quality of lesion in the vicinity according filling and empty bladder developing bladder phantom. Materials and Methods Bladder phantom was developed by modifying NEMA IEC body phantom. Air-balloon was described as bladder and 6 insert were set as lesion in the vicinity bladder according to distance. The images were evaluated in terms of % BV, comparison of SUV and peak count rate (Single, Random and True count). Results % BV was decreased far away from bladder. There were different for SUV about $7.8{\pm}3.8%$ between filling and empty bladder. True count rate was decreased about 38 %. Single and random count were increased about 44, 61%. Conclusion When the lesion is close to bladder, noise is increased. That's why prior to PET-CT scan, It is important to urinate. and It helps patient to get the accurate result.

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분산형 Amalgam에 대한 임상적 연구

  • Sunoo, Young-Gook
    • The Journal of the Korean dental association
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    • v.18 no.2 s.131
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    • pp.115-119
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    • 1980
  • The purpose of this study was to observe clinical behavior on a national dispersant amalgam alloy, KISTCAP which newly developed by the KIST (Korea Instute for Science and Technology) in Korea. The results were as follows: 1. There was no significant difference in manipulating between the above mentioned alloy and the conventional lathe cut alloy. 2. The condensation pressure for this alloy was relatively less than that of conventional one. 3. More time was needed to polish the surface of this amalgam filling body than the conventional one. 4. No notable difference was seen in the over-all clinical behavior between the Whitecap and kistcap, except the latter one showed a little more tendency in redish color.

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Magnetic resonance imaging appearance of foreign-body granulomatous reactions to dermal cosmetic fillers

  • Costa, Andre Luiz Ferreira;Caliento, Rubens;da Rocha, Glauber Bareia Liberato;Gomes, Joao Pedro Perez;Mansmith, Alison Jhisel Calle;de Freitas, Claudio Froes;Braz-Silva, Paulo Henrique
    • Imaging Science in Dentistry
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    • v.47 no.4
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    • pp.281-284
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    • 2017
  • Foreign body granulomas can develop after the injection of various cosmetic filling materials into the facial area to flatten wrinkles. Clinically, reactive lesions are easily mistaken for soft-tissue neoplasms or cysts. This report presents a case of foreign body granuloma in a 52-year-old female patient complaining of a painless swelling in the nasolabial region. Both clinical and histological features are described, underscoring the diagnostic role of magnetic resonance imaging findings.