American Journal of Theoretical and Applied Statistics

Volume 3, Issue 4, July 2014

  • Homogeneous Fluid Turbulence before the Final Period of Decay for Four-Point Correlation in a Rotating System for First-Order Reactant

    M. Monuar Hossain, M. Abu Bkar Pk, M. S. Alam Sarker

    Issue: Volume 3, Issue 4, July 2014
    Pages: 81-89
    Received: 6 June 2014
    Accepted: 27 June 2014
    Published: 30 June 2014
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    Abstract: Following Deissler’s approach, the decay in homogeneous turbulence at times preceding to the ultimate phase for the concentration fluctuation of a dilute contaminant undergoing a first-order chemical reaction in a rotating system for the case of four-point correlation is studied. Two-, three-, and four-point correlation equations have been obtained... Show More
  • Statistical Process Control Analysis Based on Software Q-Das

    Wu Guoqing, Luo Yiping, Ren Hongjuan

    Issue: Volume 3, Issue 4, July 2014
    Pages: 90-95
    Received: 19 June 2014
    Accepted: 5 July 2014
    Published: 20 July 2014
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    Abstract: The software Q-das used in statistical analysis of the production process can realize the real-time monitoring during the production process. So as to effectively support the needs of the factory in data management, long-term backup and automatic report generation. This paper tells some specific evaluation method of statistical quality control, suc... Show More
  • Research on Construction of the Green Logistics Evaluation Index System and Determination of Index Weight

    Li Zhou, Jie Zhu, Jian Guo

    Issue: Volume 3, Issue 4, July 2014
    Pages: 96-99
    Received: 1 July 2014
    Accepted: 16 July 2014
    Published: 30 July 2014
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    Abstract: The evaluation index system of green logistics development is the focus of this paper. Through the questionnaire investigation and expert scoring method obtains the judgment matrix. By using the analytic hierarchy process and fuzzy comprehensive evaluation method establishes the weight of each index. The conclusion of this paper would lay the found... Show More
  • On the Detection of Influential Outliers in Linear Regression Analysis

    Arimiyaw Zakaria, Nathaniel Kwamina Howard, Bismark Kwao Nkansah

    Issue: Volume 3, Issue 4, July 2014
    Pages: 100-106
    Received: 11 July 2014
    Accepted: 21 July 2014
    Published: 30 July 2014
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    Abstract: In this paper, we propose a measure for detecting influential outliers in linear regression analysis. The performance of the proposed method, called the Coefficient of Determination Ratio (CDR), is then compared with some standard measures of influence, namely: Cook’s distance, studentised deleted residuals, leverage values, covariance ratio, and d... Show More
  • Neighbor Designs: A New Approach of Local Control

    Naqvi Hamad, Najeeb Haider

    Issue: Volume 3, Issue 4, July 2014
    Pages: 107-110
    Received: 16 July 2014
    Accepted: 5 August 2014
    Published: 10 August 2014
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    Abstract: It is well known that randomization, replication and local control play important role in experimental design. Neighbor designs provide a tool for local control in situation where experimental units are influenced by neighboring units. A neighbor design is called one-dimensional if neighbor effects are controlled in only one way, i.e., either in ro... Show More
  • Comparison of Precision of Systematic Sampling with Some other Probability Samplings

    Habib Ahmed Elsayir

    Issue: Volume 3, Issue 4, July 2014
    Pages: 111-116
    Received: 10 July 2014
    Accepted: 7 August 2014
    Published: 20 August 2014
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    Abstract: This paper provides some discussion about the problem of precision of systematic and other related sampling methods. Comparison among these samples and the estimators are made using some empirical evidences from a finite population analysis.