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A Finite Mixture of Generalised Inverse Gaussian with Indexes -1/2 and -3/2 as Mixing Distribution for Normal Variance Mean Mixture with Application

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Open Journal of Statistics 2021年第6期11卷 963-976页

作者： Calvin B. Maina Patrick G. O. Weke Carolyne A. Ogutu Joseph A. M. Ottieno Department of Mathematics and Actuarial Science Kisii University Kisii Kenya School of Mathematics University of Nairobi Nairobi Kenya

Mixture models have become more popular in modelling compared to standard distributions. The mixing distributions play a role in capturing the variability of the random variable in the conditional distribution. Studies have lately focused on finite mixture models as mixing distributions in the mixing mechanism. In the present work, we consider a Normal Variance Mean mixture model. The mixing distribution is a finite mixture of two special cases of Generalised Inverse Gaussian distribution with indexes -1/2 and -3/2. The parameters of the mixed model are obtained via the Expectation-Maximization (EM) algorithm. The iterative scheme is based on a presentation of the normal equations. An application to some financial data has been done.

关键词： Finite Mixture Weighted Distribution mixed model EM-Algorithm

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A unified framework of detecting all kinds of effects in genome-wide association studies

A unified framework of detecting all kinds of effects in gen...

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第十九届中国作物学会学术年会

作者：章元明华中农业大学植物科技学院作物信息研究中心

The widely-used genome-wide association study(GWAS) methods in genetic dissection of complex traits in human, animal and plant genetics are almost based on single-marker genome scanning. These methods require Bonferroni correction for multiple tests, which often is too conservative to detect some important loci for complex traits, especially in relatively large experimental error. Meanwhile, the methodologies of detecting environmental(QE) and epistatic(QQ) interactions are limited. To overcome these issues, in the past a few years we have proposed six multi-locus GWAS methods. In these methods, first, various algorithms are used to scan each marker on the genome or all the markers on each chromosome or on the genome in order to obtain all the potentially associated markers. Then, all the selected markers are placed into one model, their effects are estimated by empirical Bayes, and all the non-zero effects are detected by likelihood ratio test for true QTN identification. A series of real and simulated datasets were analyzed by these multi-locus methods via an R software mrMLM v4.0. As a result, the power of QTN detection and the accuracy of QTN parameter estimation are significantly higher than those from the widely-used methods;false positive and negative rates in the detection of QTN are effectively controlled, although a more relaxed critical value(LOD=3.0 ≈ P-value = 0.0002) for significant QTN is adopted. Recently, we have constructed a unified framework for the detection of QE and QQ interactions in GWAS. Ten grain yield and quality traits in 1495 rice F1 s were re-analyzed. As a result, more than two hundred previously reported main-effect, QE and QQ genes are identified. All the above methods can promote the wide application of GWAS in human, animal and plant genetics.

关键词： genome-wide association studies mixed model rice QTN-by-environment interaction QTN-by-QTN interaction hybrid

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Application of Virtual Process Verification in Production Preparation of Instrument Panel Assembly Line

Application of Virtual Process Verification in Production Pr...

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2021中国汽车工程学会年会暨展览会

作者： Ye Qin Dongfeng Passenger Vehicle Company

Virtual process verification is an important part of vehicle development,which plays a connecting role between product development and actual vehicle assembly *** assembly process verification can detect and avoid defects generating fundamentally during the product design and development *** improving and optimizing the design scheme to eliminate the detected defects,the manufacturing costs can be effectively reduced and also the production preparation cycle can be *** the introduction of new instrument panel of a new platform model in an original equipment manufacturer（OEM） as an implementation case,this paper illustrates the utilization of virtual process verification in the product design stage from the aspects of assembly process,manhour balance,logistics planning,workshop layout *** on the application of virtual simulation technology,the process preparation for mixed model production of new type instrument panel is completed with the minimum cost and the shortest cycle,which significantly ensures the successful production of new vehicle project.

关键词： virtual verification instrument panel mixed model production arrangements

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被高估的情绪智力

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心理学 2016年第10期 31-42页

作者：李一茗邹泓黎坚危胜男

近年来，情绪智力颇受大众关注，并被认为是比智商更重要的成功要素。但是，这一论断是否准确客观，仍然是值得探究的问题。根据情绪智力的理论和研究，情绪智力可分为能力型情绪智力和混合型情绪智力，两种情绪智力在概念界定和测量方... 详细信息

近年来，情绪智力颇受大众关注，并被认为是比智商更重要的成功要素。但是，这一论断是否准确客观，仍然是值得探究的问题。根据情绪智力的理论和研究，情绪智力可分为能力型情绪智力和混合型情绪智力，两种情绪智力在概念界定和测量方法上有很大差异，这些差异在一定程度上阻碍了研究者对情绪智力功能的准确评估。根据两种情绪智力在个体身心健康、人际关系、工作和教育成果等领域的现有研究结果，不管是能力型情绪智力，还是混合型情绪智力，的确与个体生活中的很多积极结果显著相关，但现有研究尚不能证明情绪智力对于这些结果具有决定性影响，而且，情绪智力的作用并未超越智力。所以，对于情绪智力在现实生活中的应用，应客观认识情绪智力的有限影响力，区分理论基础不同的两种情绪智力，在情绪智力有独特作用的领域尽可能发挥其功能，此外，应将情绪智力的培养与健康人格的塑造有机结合起来。

关键词：情绪智力能力模型混合模型功能 emotional intelligence ability model mixed model function

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