• Title/Summary/Keyword: weight distributions

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Development and Application of a Generation Method of Human Models for Ergonomic Product Design in Virtual Environment (가상환경상의 인간공학적 제품설계를 위한 인체모델군 생성기법 개발 및 적용)

  • Ryu, Tae-Beum;Jung, In-Jun;You, Hee-Cheon;Kim, Kwang-Jae
    • IE interfaces
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    • v.16 no.spc
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    • pp.144-148
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    • 2003
  • A group of digital human models with various sizes which properly represents a population under consideration is needed in the design process of an ergonomic product in virtual environment. The present study proposes a two-step method which produces a representative group of human models in terms of stature and weight. The proposed method first generates a designated number of pairs of stature and weight within an accommodation range from the bivariate normal distribution of stature and weight of the target population. Then, from each pair of stature and weight, the method determines the sizes of body segments by using 'hierarchical' regression models and corresponding prediction distributions of individual values. The suggested method was applied to the 1988 US Army anthropometric survey data and implemented to a web-based system which generates a representative group of human models for the following parameters: nationality, gender, accommodation percentage, and number of human models.

LDPC Codes' Upper Bounds over the Waterfall Signal-to-Noise Ratio (SNR) Region

  • Chung, Kyu-Hyuk
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.11C
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    • pp.880-882
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    • 2008
  • This paper presents LDPC codes' upper bounds over the waterfall SNR region. The previous researches have focused on the average bound or ensemble bound over the whole SNR region and showed the performance differences for the fixed block size. In this paper, the particular LDPC codes' upper bounds for various block sizes are calculated over the waterfall SNR region and are compared with BP decoding performance. For different block sizes the performance degradation of BP decoding is shown.

THE EFFECT OF THE HIGH DOSAGE OF CORTISON ON THE OXYTALAN FIBERS (Cortisone 과잉투여가 Oxytalan fiber에 미치는 영향에 관한 실험적 연구)

  • Hwang, Seong-Myeong
    • The Journal of the Korean dental association
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    • v.13 no.5
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    • pp.453-455
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    • 1975
  • To observe the effect of cortison on the oxytalan fibers of the periodontal membrane, the albino rats of each groups were injected intramuscularly with 2.5mg. of cortison/kg. body weight daily for 3,7,10,14, and 21 days. After 14 days of cortison administration, the distributions of the oxytalan fibers were irrgular. In their path from cementum to alveolar bone, the fibers pass wave-like. Their density was loose and their stain ability was lesser than the normal. Prolonged administration of cortison impaired the development and the normal form of the oxytalan fibers.

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Development of Vehicular Load Model using Heavy Truck Weight Distribution (I) - Data Collection and Estimation of Single Truck Weight (중차량중량분포를 이용한 차량하중모형 개발(I) - 자료수집 및 단일차량 최대중량 예측)

  • Hwang, Eui-Seung
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.3A
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    • pp.189-197
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    • 2009
  • In this study, truck weight data and load effects of single truck on bridges are analyzed for development of new vehicular load model of the reliability-based bridge design code. Rational load model and statistical properties of loads are important for developing reliability-based design code. In this study, truck weight data collected at four locations are used as well as data from four locations in other studies. Truck weight data are collected from WIM or BWIM system, which are known to give reliable data. Typical truck types, dimensions and axle weight distribution are determined. Probability distributions of upper 20% total truck weight are assumed as Extreme Type I and 100 years maximum truck weights are estimated by linear regression on the probability paper. The load effects of trucks having estimated maximum weights are analyzed for span length from 10 m to 200 m.

THE EFFECT OF PALM OIL SUPPLEMENTATION IN ISOCALORIC AND ISONITROGENOUS DIETS OF BROILERS

  • Panja, P.;Kassim, H.;Jalaludin, S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.8 no.2
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    • pp.151-158
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    • 1995
  • A study was carried out to investigate the effect of palm oil supplementation on the growth, carcass composition and fatty acid distributions of the broilers fed isonitrogenous and isocaloric diets. This study showed that palm oil supplementation increased feed consumption, weight gain and nitrogen intake. Feed conversion improved at higher fat inclusions, but not significant. Male birds consumed significantly more feed than females resulting in significant increase in energy consumption and weight gain. Increaseing fat content in the ME:P constant diet did not produce significant difference in the fat content of the chicken. Fatty acids content of the diet exert varying effects of the composition and distribution of fatty acids in muscles of the chicken. The fatty acids found in larger amount in the breast and thigh muscles were palmitic, oleic and linoleic. The fatty acids of the breast and thigh muscles were found to correspond the fatty acids of the diets. There were no differences in the fatty acids distribution patterns between the sexes.

Comparison of Geotechnical Characteristics of Bottom Ash for Lightweight Fill Material (경량 성토재 활용을 위한 석탄 저회 물성 비교)

  • Kim, Yun-Ki;Lee, Sung-Jin;Shin, Min-Ho;Lee, Seung-Rae;Lee, Yong-Sik
    • Proceedings of the Korean Geotechical Society Conference
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    • 2010.03a
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    • pp.679-686
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    • 2010
  • Mechanical characteristics of bottom ash produced in coal-fired power plant are investigated to utilize as light-weight fill materials. Triaxial compression test, water retention test, and unsaturated direct shear test were conducted for weathered soil (WS), reclaimed bottom ash (RBA), and screened bottom ash (BA). RBA had larger frictional angle and lower effective cohesion than those of WS. Water retention charactersitics of RBA and BA existed within distributions of soil-water characteristic curves for domestic weathered soils. Unsaturated shear strength of RBA was similar to that of WS at matric suctions of 50 kPa and 100 kPa. As a conclusion, bottom ash can be used as fill materials to replace the conventional construction materials by.

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Initial Particle Size Effects on Sintering and Dielectric Properties of $Pb>(Fe_1/2Nb_1/2)O_3$ (초기입자크기가 $Pb>(Fe_1/2Nb_1/2)O_3$의 소결 및 유전성에 미치는 영향)

  • 박경봉;김태희;윤기현
    • Journal of the Korean Ceramic Society
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    • v.29 no.9
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    • pp.711-718
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    • 1992
  • Pb(Fe1/2Nb1/2)O3 was prepared by the molten salt synthesis method using an equimolar mixture of NaCl-KCl. Initial particle size could be controlled by varying the weight ratio of the NaCl-KCl to raw materials from 0.1 to 1.0, and the initial particle size effects on the sintering and dielectric properties of Pb(Fe1/2Nb1/2)O3 were investigated at the sintering temperature range from 90$0^{\circ}C$ to 105$0^{\circ}C$. As the weight ratio of salt increased, the average particle size decreased and the particle size distributions tended to narrow. As the initial particle size decreased, the linear shrinkage and density increased due to the promotion of densification. Dielectric constant increased with decreasing the initial particle size resulting from the increase of density and grain size.

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BAYESIAN HIERARCHICAL MODEL WITH SKEWED ELLIPTICAL DISTRIBUTION

  • Chung, Youn-Shik;Dipak K. Dey;Yang, Tae-Young;Jang, Jung-Hoon
    • Journal of the Korean Statistical Society
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    • v.32 no.4
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    • pp.425-448
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    • 2003
  • Meta-analysis refers to quantitative methods for combining results from independent studies in order to draw overall conclusions. We consider hierarchical models including selection models under a skewed heavy tailed error distribution proposed originally by Chen et al. (1999) and Branco and Dey (2001). These rich classes of models combine the information of independent studies, allowing investigation of variability both between and within studies, and incorporate weight function. Here, the testing for the skewness parameter is discussed. The score test statistic for such a test can be shown to be expressed as the posterior expectations. Also, we consider the detail computational scheme under skewed normal and skewed Student-t distribution using MCMC method. Finally, we introduce one example from Johnson (1993)'s real data and apply our proposed methodology. We investigate sensitivity of our results under different skewed errors and under different prior distributions.

Inhibitory Substances of a Tau-Type Pumpkin Glutathione S-Transferase: Their Existence and Chemical Properties

  • Hossain, Md. Daud;Suzuki, Toshisada;Fujita, Masayuki
    • Journal of Crop Science and Biotechnology
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    • v.10 no.2
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    • pp.117-122
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    • 2007
  • Distributions of physiological inhibitors of a tau-type pumpkin glutathione S-transferase(CmGSTU3) have been investigated in different organs of pumpkin plants, including the onion bulb and water hyacinth root. Inhibitory effects were observed in alcoholic extracts of all plant parts, but the extracts prepared from the roots of either water hyacinth or pumpkin plant showed the highest effect on CmGSTU3 toward 1-chloro-2,4- dinitrobenzene(CDNB). Results of various chromatographies indicated that a number of inhibitory substances were present in the alcoholic extract of each plant organ. Some macromolecules in the plant extracts exhibited inhibitory effects; however, the extracts might contain a large number of unknown low-molecular-weight inhibitory substances. Some of the low-molecular-weight inhibitors in water hyacinth root extract showed characteristics fluoresce under UV light.

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Membrane Ultrafiltration for Apparent Molecular Weight Distributions of Dissolved Organic Matter

  • Seo, Jun-Won;Sa, Tongmin;Kim, Jong-Soo
    • Journal of Applied Biological Chemistry
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    • v.43 no.1
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    • pp.31-36
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    • 2000
  • Apparent MWDs of DOM in natural waters and swine wastewaters were determined through membrane ultrafiltration. The nominal MWCOs of ultrafiltration membranes by the manufacturer were confirmed to be similar with those obtained from the ultrafiltration procedures employed in this study using six MW standard compounds. Natural waters showed a wide range of MWOs, but 62.4~87.5% were in the range of MW<10K. High MW fractions were preferentially removed through water treatment processes. Swine wastewater showed two major ranges of MWDs, 49.0% in <1K and 36% in >50k while anaerobically treated swine wastewaters showed 17.5~18.0% in <1K and 53.0~58.8% in <50K. The overall DOM was reduced during anaerobic treatment by 76.8~80.0% as COD; however. the percentage of low MW fractions decreased and that of the high MW fractions increased.

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