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Erlang mixture distribution with application on COVID-19 cases in Egypt

International Journal of Biomathematics 2021年第3期14卷 203-220页

作者： M.M.E.Abd El-Monsef Faculty of Science Tanta University Al-Geish StreetTantaGharbiaEgypt

In this paper,a finite mixture of m-Brlang distributions is *** moments,shape characteristics and parameter estimates of the proposed model are also *** proposed mixture has the property that it has a bounded hazard function.A special case of the mixed Erlang distribution is introduced and *** addition,a predictive technique is introduced to estimate the needed number of mixture components to fit a certain data.A real data concerning the confirmed COVID-19 cases in Egypt is introduced to utilize the predictive estimation *** more real datasets are used to examine the flexibility of the proposed model.

关键词： Erlang distribution mixture distribution goodness-of-fit test COVID-19

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AN OPTIMAL BURN-IN-PREVENTIVE-REPLACEMENT MODEL ASSOCIATED WITH A mixture distribution

AN OPTIMAL BURN-IN-PREVENTIVE-REPLACEMENT MODEL ASSOCIATED W...

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第四届质量与可靠性国际会议

作者： A.K.S.JARDINE Department of Mechanical ＆ Industrial Engineering University of Toronto 5 King’s College Road Toronto Ontario M5S 3G8 Canada

＜正＞ A mixture arises in a number of situations. A typical situation is that a population is heterogeneous and consists of several subpopulations, which represent mutually exclusive failure modes（usually early failures where the MTTF is"short" and wearout failures where the MTTF is"long" and the hazard rate is increasing.） When the time to failure of a machine follows a mixture distribution, a challenge is how to determine an appropriate operational or/and maintenance policy to reduce the early-phase failures and operational cost. This paper proposes a bum-in and preventive replacement model to jointly optimize the bum-in time and preventive replacement age. A numerical example is also included.

关键词： mixture distribution burn-in age replacement optimization

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Inheritance of the Male Sterility in a New Photo/Thermo-Sensitive Genie Male Sterile Line B06S of Rice

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Rice science 2004年第4期11卷 171-176页

作者： HEHao-hua HUANGWen-xin PENGXiao-song ZHUChang-lan LIUYi-bai ResearchSectionofCropGeneticsandBreeding.JiangxiAgriculturalUniversity Nanchang330045China

The major male sterile genes in a new photo/thermo-sensitive genie male sterile (PTGMS) line B06S of rice were analyzed by the manipulation of mixture distribution theory. The results indicated that a pair of major ma... 详细信息

关键词： rice photo/thermo-sensitive genie male sterile line male sterile gene inheritance mixture distribution Expectation and Maximization (EM) algorithm

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