Archive:: Science Journal of Applied Mathematics and Statistics:: Science Publishing Group

Volume 3, Issue 2, April 2015

Effects of Response Errors on Population Parameters in Double Sampling for Stratification

David Anekeya Alilah, Robert Keli, Harun Makwata, James Kahiri, Leo O. Odongo

Issue: Volume 3, Issue 2, April 2015

Pages: 27-32

Received: 30 January 2015

Accepted: 19 February 2015

Published: 2 March 2015

DOI: 10.11648/j.sjams.20150302.11

Downloads:

Views:

Abstract: This study investigates the effects of response errors on population parameters obtained by double sampling for stratification at the interview and data processing level. Simulation study is carried out to investigate the effects of the response errors on these estimates. Finite population is generated using R-statistical package and study variable... Show More

Download PDF

View Online
A Study on a Tandem Stochastic Queueing Model with Parallel Phases and a Numerical Example

Vedat Sağlam, Erdinç Yücesoy, Murat Sağır, Müjgan Zobu

Issue: Volume 3, Issue 2, April 2015

Pages: 33-38

Received: 3 February 2015

Accepted: 19 February 2015

Published: 8 March 2015

DOI: 10.11648/j.sjams.20150302.12

Downloads:

Views:

Abstract: In this study a two stage queueing model is analyzed. At first stage there is a single server having exponential service time with parameter μ_1 and no waiting is allowed in front of this server. There are two parallel phase-type servers at second stage and these parallel servers have exponential service time with parameter μ_2. Arrivals to this sy... Show More

Download PDF

View Online
Determination of the Status of Utilization and Management Scenarios Bonito (Auxis rochei) Caught in the Talaud Waters North Sulawesi

John S. Kekenusa, Marline S. Paendong, Winsy Ch. D. Weku, Sendy B. Rondonuwu

Issue: Volume 3, Issue 2, April 2015

Pages: 39-46

Received: 12 January 2015

Accepted: 27 February 2015

Published: 10 March 2015

DOI: 10.11648/j.sjams.20150302.13

Downloads:

Views:

Abstract: Bonito (Auxis rochei), needs to be managed well because even as a renewable natural resource, but can undergo depletion or extinction. One of the approach in the management of fish resources is by modeling. The analysis was performed aiming to get the best estimate for the surplus production model to determine the maximum sustainable yields (MSY), ... Show More

Download PDF

View Online
Analysis of the Volatility of the Electricity Price in Kenya Using Autoregressive Integrated Moving Average Model

Mohammed Mustapha Wasseja, Samwel N. Mwenda

Issue: Volume 3, Issue 2, April 2015

Pages: 47-57

Received: 17 February 2015

Accepted: 4 March 2015

Published: 30 March 2015

DOI: 10.11648/j.sjams.20150302.14

Downloads:

Views:

Abstract: Electricity has proved to be a vital input to most developing economies. As the Kenyan government aims at transforming Kenya into a newly-industrialized and globally competitive, more energy is expected to be used in the commercial sector on the road to 2030. Therefore, modelling and forecasting of electricity costs in Kenya is of vital concern. In... Show More

Download PDF

View Online
On Convergence a Variation of the Converse of Fabry Gap Theorem

Molood Gorji, Naser Abbasi

Issue: Volume 3, Issue 2, April 2015

Pages: 58-62

Received: 8 March 2015

Accepted: 26 March 2015

Published: 3 April 2015

DOI: 10.11648/j.sjams.20150302.15

Downloads:

Views:

Abstract: In this article we give a variation of the converse of Fabry Gap theorem concerning the location of singularities of Taylor-Dirichlet series, on the boundary of convergence. whose circle of convergence is the unit circle and for which the unit circle is not the natural boundary.

Download PDF

View Online