Science Journal of Applied Mathematics and Statistics

Volume 5, Issue 1, February 2017

  • Mixed Seasonal and Subset Fourier Model with Seasonal Harmonics

    Iberedem Aniefiok Iwok, Murphy Dooga

    Issue: Volume 5, Issue 1, February 2017
    Pages: 1-9
    Received: 30 September 2016
    Accepted: 13 October 2016
    Published: 14 January 2017
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    Abstract: In this work, Box-Jenkins seasonal model was fitted to a temperature series and the assumption of model adequacy was found to be violated. Subset Fourier series with seasonal harmonics was introduced and added to the pure seasonal component that was found to be inadequate. This combination resulted in a mixed seasonal and subset Fourier model with ... Show More
  • The Best Spanning Tree of Heterogeneous Node Weighted Graphs

    Nana Wang, Wei Liu

    Issue: Volume 5, Issue 1, February 2017
    Pages: 10-14
    Received: 16 January 2017
    Published: 17 January 2017
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    Abstract: Minimum spanning tree theory has a wide application in many fields. But in many practical problems, we are often faced with the heterogeneous node weighted graph with both edge weight and node weight be considered. In this paper, we present the definition and the mathematical model of the best spanning tree, then raise an algorithm of the best span... Show More
  • An Optimal Split-Plot Design for Performing a Mixture-Process Experiment

    Gladys Gakenia Njoroge, Jemimah Ayuma Simbauni, Joseph Arap Koske

    Issue: Volume 5, Issue 1, February 2017
    Pages: 15-23
    Received: 30 October 2016
    Accepted: 21 November 2016
    Published: 18 January 2017
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    Abstract: In many mixture-process experiments, restricted randomization occurs and split-plot designs are commonly employed to handle these situations. The objective of this study was to obtain an optimal split-plot design for performing a mixture-process experiment. A split-plot design composed of a combination of a simplex centroid design of three mixture ... Show More
  • A Trinomial Probability Model for Occurrences of Stock Price Change: Evidence from Dhaka Stock Exchange

    Md. Zahirul Islam, Shakil Ahmad

    Issue: Volume 5, Issue 1, February 2017
    Pages: 24-30
    Received: 8 December 2016
    Accepted: 19 December 2016
    Published: 18 January 2017
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    Abstract: This paper is concerned with modeling the occurrences of stock price uncertainty of Dhaka Stock Exchange. Daily closing prices of three different banks are selected for analysis. This report focuses on the overall condition of the stock market to find out the amount of probability of uncertainty of occurrences by analytically chosen model to the fi... Show More
  • Hydromagnetic Turbulent Flow Between Two Parallel Infinite Plates

    Kennedy John Mwangi Karimi, Dickson Kande Kinyua

    Issue: Volume 5, Issue 1, February 2017
    Pages: 31-40
    Received: 28 September 2016
    Accepted: 10 November 2016
    Published: 21 January 2017
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    Abstract: In this study we shall investigate hydromagnetic turbulent unsteady flow of an incompressible electrically conducting fluid between two parallel infinite plates. The flow variables such as velocity and thermodynamic properties at every point of fluid vary with respect to time. The effect of an applied transverse magnetic field normal to the main fl... Show More
  • The American Statistical Association (ASA) Statement of 2016 on Statistical Significance and P-value: A Critical Thought

    Silas Memory Madondo

    Issue: Volume 5, Issue 1, February 2017
    Pages: 41-48
    Received: 6 December 2016
    Accepted: 4 January 2017
    Published: 24 January 2017
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    Abstract: A study on American Statistical Association (ASA) policy statement on statistical significance testing and p-value of 2016 was carried out in Tanzania. The purpose of the study was to explore the feelings and reactions of university statistics tutors towards the American Statistical Association policy statement on statistical significance testing a... Show More
  • Construction of Some Resolvable t-designs

    Alilah David

    Issue: Volume 5, Issue 1, February 2017
    Pages: 49-53
    Received: 20 July 2016
    Accepted: 8 August 2016
    Published: 22 February 2017
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    Abstract: The A t-design is a generation of balanced incomplete block design (BIBD) where λ is not restricted to the blocks in which a pair of treatments occurs but to the number of blocks in which any t treatments (t = 2,3…) occurs. The problem of finding all parameters (t, v, k, λt) for which t-(v, k, λt) design exists is a long standing unsolved problem e... Show More
  • Prediction and Trends of Rainfall Variability over Bangladesh

    Mohammad Anisur Rahman, Sunny Mohammed Mostafa Kamal, Mohammad Maruf Billah

    Issue: Volume 5, Issue 1, February 2017
    Pages: 54-59
    Received: 3 January 2017
    Accepted: 19 January 2017
    Published: 1 March 2017
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    Abstract: Rainfall is one of the most common natural disasters in Bangladesh which rigorously affect agro-based economy and people’s livelihood in almost every year. The main objective of this study is to examine the variation, prediction and trend of rainfall in Bangladesh. The data for this study have been extracted from the Bangladesh Meteorological Depar... Show More