• Title/Summary/Keyword: Marshall

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A Development of Thin Quiet-Permeable Asphalt Concrete (박층 저소음.배수성 아스팔트 혼합물 개발)

  • Jun, Soon-Je;Jo, Shin-Haeng;Jeon, Jun-Young;Ryu, Deug-Hyun
    • 한국방재학회:학술대회논문집
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    • 2008.02a
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    • pp.305-308
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    • 2008
  • This paper describes a research study on the durability and strength properties of thin quiet-permeable asphalt concrete. Such asphalt mixes have high porosity, which offers significantly better drainages than normal mix designs. However, these materials also exhibit poor durability and strength limiting their use in pavement application. To remedy this, fiber and polymer modifiers have been proposed. All samples were added to modified binder which were prepared with or without the modifiers and fiber using Marshall mix procedures and were experimentally tested using various standardized testing procedures including percent air void for porosity, cantabro test and marshall stability. In general, the results of marshall stability showed that modified mixtures were equivalent to unmodified mixtures. Especially, the result of cantabro tested modified mixtures was superior to unmodified mixtures.

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Parameter estimation of an extended inverse power Lomax distribution with Type I right censored data

  • Hassan, Amal S.;Nassr, Said G.
    • Communications for Statistical Applications and Methods
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    • v.28 no.2
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    • pp.99-118
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    • 2021
  • In this paper, we introduce an extended form of the inverse power Lomax model via Marshall-Olkin approach. We call it the Marshall-Olkin inverse power Lomax (MOIPL) distribution. The four- parameter MOIPL distribution is very flexible which contains some former and new models. Vital properties of the MOIPL distribution are affirmed. Maximum likelihood estimators and approximate confidence intervals are considered under Type I censored samples. Maximum likelihood estimates are evaluated according to simulation study. Bayesian estimators as well as Bayesian credible intervals under symmetric loss function are obtained via Markov chain Monte Carlo (MCMC) approach. Finally, the flexibility of the new model is analyzed by means of two real data sets. It is found that the MOIPL model provides closer fits than some other models based on the selected criteria.

An Explorative Study on Analysis of Social Welfare Regime based on Political Philosophical Interpretation of Marshall's Social Citizenship (마셜 사회권의 정치철학적 해석을 통한 사회복지 레짐 분석에 관한 탐색적 연구)

  • Na, Young-Hee;Kim, Gi-Duk
    • Korean Journal of Social Welfare
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    • v.61 no.4
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    • pp.265-285
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    • 2009
  • The purpose of this study aims to interpretate the dynamics of the Social Citizenship of Marshall, and thereby to search a tool to evaluate the characteristics of social citizenship working at different welfare states and its developmental level. The existing study on the Marshall's Citizenship including the social citizenship mainly used to focus on Citizenship's composition, its basis and justification of rights to social citizenship. This implies to relatively neglect the concretization of social citizenship into social policy and its application to reality. Against this background, this study focuses on the embryological dynamics of Marshall's Social Citizenship and is to justify that social citizenship is historical concept which has been emerged in the complex development of modern capitalism, so called, the hyphenated society composed of Democracy, Capitalism and Welfarism. The study is to provide that complexity and dynamics of Marshall's social citizenship could be classified into some typology along political philosophical issues surrounding relationship between state and market and individual and community, and such typology can match the welfare state regime suggested by Esping-Anderson. Finally, this study is to prove that such typology could be used an analysis tool for current welfare states in the light of the welfare state regime.

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Development of Fracture Energy Measurement System of Asphalt Mixture Using Marshall Tester (마샬 안정도시험기를 이용한 아스팔트 혼합물의 파괴에너지 측정시스템 개발)

  • Kim, Boo-Il;Lee, Moon-Sup
    • International Journal of Highway Engineering
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    • v.11 no.1
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    • pp.135-144
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    • 2009
  • The purpose of this study is to develop a simple and rational crack evaluation system using Marshall tester. Fracture energy were used as a parameter to evaluate the crack resistance of asphalt mixtures. Marshall tester basically measures the vertical deformation obtained from the linear variable differential transformer(LVDT) attached on the specimen's exterior, which can cause a measurement error due to the local deformation near the loading head. Therefore, the validity of the measurement system of Marshall tester should be tested to use it in calculation of fracture energy. Two types of indirect tensile strength tests were performed using four types of asphalt mixtures at two temperature conditions. From the tests, it was shown that local deformation near the loading head had not occurred before a specimen was fractured, so that it did not cause the measurement error of fracture energy. And also from the statistic analysis, the coefficient of variation of vertical deformation measurements obtained on specimen's exterior is less than 15%. Thus, vertical deformation measurements obtained on the specimen's exterior can be used in crack evaluation system using Marshall tester.

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Estimation of P(X

  • Kil Ho Cho;Jang Sik Cho;Young Joon Cha;Jae Man Lee
    • Communications for Statistical Applications and Methods
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    • v.3 no.3
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    • pp.253-261
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    • 1996
  • In this paper, we derive the maximum likelihood estimator of P=P(X

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Microfocus X-ray CT Analysis of Shrinking Direction in Resin Composite.

  • Inai, N.;Katahira, N.;Hashimoto, K.;Tagami, J.;Hirakimoto, A.;Marshall, S.J.;Marshall. G.W.
    • Proceedings of the KACD Conference
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    • 2001.11a
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    • pp.559.1-559
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    • 2001
  • The aim of the study was to determine the direction and the rate of polymerization shrinkage of light-cured resin composite. Materials and Methods: A microfocus x-ray CT(computed tomography) instrument (SMX-255CT, Shimadzu Co., Kyoto, Japan) was used to analyze and characterize the pre-and post-gel phases. A microfocus x-ray tube was used to enable a focus dimension of 4 microns.(omitted)

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ON THE CLASS OF TRANSMUTED-G DISTRIBUTIONS

  • AHMAD, MORAD;AL-AQTASH, RAID;AKINSETE, ALFRED
    • Journal of applied mathematics & informatics
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    • v.40 no.5_6
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    • pp.925-931
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    • 2022
  • In this article, we compare the reliability and the hazard function between a baseline distribution and the corresponding transmuted-G distribution. Some examples based on existing transmuted-G distributions in literature are used. Three tests of parameter significance are utilized to test the importance of a transmuted-G distribution over the baseline distribution, and real data is used in an application of the inference about the importance of transmuted-G distributions.