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Mathematical Modelling and Steady State Performance Analysis of a Markovian Queue with Heterogeneous Servers and Working Vacation
Issue:
Volume 4, Issue 2-1, March 2015
Pages:
1-10
Received:
4 December 2014
Accepted:
5 December 2014
Published:
11 March 2015
DOI:
10.11648/j.ajtas.s.2015040201.11
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Abstract: In the present paper, mathematical modeling for analyzing a Markovian queueing system with two heterogeneous servers and working vacation has been demonstrated. Keeping in view queueing situations in real life problems, here we consider service policy that initially both the heterogeneous servers take vacation when there are no customers waiting for service in the queue; however, after this server 1 is always available but the other goes on vacation whenever server 2 is idle. The vacationing server however, returns to serve at a low rate as an arrival finds the other server busy. Busy period analysis for the working vacation model with heterogeneous servers has been worked out. Performance measures of the Markovian queueing system with varying parameters have been explored under steady state using matrix geometric method. Finally, based on sensitivity analysis of the performance measures, conclusive observations have been focused.
Abstract: In the present paper, mathematical modeling for analyzing a Markovian queueing system with two heterogeneous servers and working vacation has been demonstrated. Keeping in view queueing situations in real life problems, here we consider service policy that initially both the heterogeneous servers take vacation when there are no customers waiting fo...
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Performance Analysis of Powers of Skewness and Kurtosis Based Multivariate Normality Tests and Use of Extended Monte Carlo Simulation for Proposed Novelty Algorithm
Vishwa Nath Maurya,
Ram Bilas Misra,
Chandra K. Jaggi,
Avadhesh Kumar Maurya
Issue:
Volume 4, Issue 2-1, March 2015
Pages:
11-18
Received:
12 December 2014
Accepted:
13 December 2014
Published:
11 March 2015
DOI:
10.11648/j.ajtas.s.2015040201.12
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Abstract: An ample study of the comparative powers of a number of omnibus multivariate normality tests is main object in this paper. Since testing for multivariate normality tests is considerably more challenging process than for testing of univariate one and therefore, study of testing for multivariate normality tests has its increasing demand. Through this paper, we have explored several techniques for assessing multivariate normality (MVN) and as well as comparative analysis for their competence have also been demonstrated. The results of extensive Monte Carlo simulation study of the size corrected power of various tests of multivariate normality for drawn samples from contaminated normal distributions have been explored as well. Moreover, a novel algorithm has been proposed in order to evaluate the size corrected powers for testing multivariate normality. The algorithm proposed herein is a fast easily implementable algorithm and it can be applied for both types of univariate and multivariate normality tests. Using Different omnibus tests for sample size 50 and 200, graphs for empirical powers of multivariate normal data with lower and upper contamination have been presented. Finally, some significant conclusions of our present study have been drawn.
Abstract: An ample study of the comparative powers of a number of omnibus multivariate normality tests is main object in this paper. Since testing for multivariate normality tests is considerably more challenging process than for testing of univariate one and therefore, study of testing for multivariate normality tests has its increasing demand. Through this...
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Design and Estimate of the Optimal Parameters of Adaptive Control Chart Model Using Markov Chains Technique
Vishwa Nath Maurya,
Ram Bilas Misra,
Chandra K. Jaggi,
Charanjeet Singh Arneja,
Rama Shanker Sharma,
Avadhesh Kumar Maurya
Issue:
Volume 4, Issue 2-1, March 2015
Pages:
19-26
Received:
4 December 2014
Accepted:
5 December 2014
Published:
11 March 2015
DOI:
10.11648/j.ajtas.s.2015040201.13
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Abstract: Present paper aims to plan and estimate the optimal parameters of an adaptive control chart model for monitoring the mean of a process using sample size and variable interval. Here, the X_BARRA-VSSI chart has been chosen because of its two special features- firstly being an adaptive scheme with great potential for practical application, and secondly the chart only requires knowledge of the sample size and the time between sample selections after established the optimal parameters for the chart. To estimate the optimal parameters of chosen control chart model, the Markov chains technique has been applied. Two functions written in R language are presented in order to assist the user in planning a statistical project based on the X_BARRA-VSSI adaptive scheme. Evaluating the effectiveness of the control chart of by means of Markov chains has been examined and the optimal parameters of the adaptive control chart model have been explored. In addition to this, a numerical example for application of the control chart model has also been illustrated and finally some conclusive observations with significant suggestions for its future scope are carried out.
Abstract: Present paper aims to plan and estimate the optimal parameters of an adaptive control chart model for monitoring the mean of a process using sample size and variable interval. Here, the X_BARRA-VSSI chart has been chosen because of its two special features- firstly being an adaptive scheme with great potential for practical application, and second...
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Correlation Analysis between the Corporate Governance and Financial Performance of Banking Sectors Using Parameter Estimation
Vishwa Nath Maurya,
Rama Shanker Sharma,
Saad Talib Hasson Aljebori,
Avadhesh Kumar Maurya,
Diwinder Kaur Arora
Issue:
Volume 4, Issue 2-1, March 2015
Pages:
27-32
Received:
4 December 2014
Accepted:
5 December 2014
Published:
11 March 2015
DOI:
10.11648/j.ajtas.s.2015040201.14
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Abstract: Present paper deals with problems of determining the relationship between the variables of corporate governance and financial performance of Islamic banks, where we dealt the corporate governance in the banking sector, where increasing the importance of corporate governance, due to their special nature, as the bankruptcy of banks affects not only the relevant parties from customers, depositors and lenders, but affect financial stability and then the economy as a whole. Through this paper we dealt to the specificity of governance in Islamic banks, which face Double Governance: Anglo-Saxon governance system and Islamic Governance System. In addition, we focused our attention to measure the impact of corporate governance variables on financial performance through an empirical study on a sample of Islamic banks during the period 2005-2012 in the GCC region. Our present study implies that there is a very strong relationship between the variables of governance and financial performance of Islamic banks, where there is a positive relationship between return on assets and the composition of the Board of Directors, the size of the Board of Directors, the number of committees in the Council, as well as the number of members of the Sharia Supervisory Board, while it is clear that there is a negative relationship between return on assets and concentration ownership variable.
Abstract: Present paper deals with problems of determining the relationship between the variables of corporate governance and financial performance of Islamic banks, where we dealt the corporate governance in the banking sector, where increasing the importance of corporate governance, due to their special nature, as the bankruptcy of banks affects not only t...
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Empirical Analysis of Work Life Balance polIcies and Its Impact on Employee’s Job Satisfaction and Performance: Descriptive Statistical Approach
Vishwa Nath Maurya,
Chandra K. Jaggi,
Bijay Singh,
Charanjeet Singh Arneja,
Avadhesh Kumar Maurya,
Diwinder Kaur Arora
Issue:
Volume 4, Issue 2-1, March 2015
Pages:
33-43
Received:
4 December 2014
Accepted:
6 December 2014
Published:
11 March 2015
DOI:
10.11648/j.ajtas.s.2015040201.15
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Abstract: The present paper envisages analyzing the relationship between work life balance policies and employee job satisfaction. Specifically, it has been focused here that the work life balance policies lead to attaining equilibrium between professional work and other activities. Under the present study is also examined that the work life balance policies reduce friction between official and domestic life. Related theories of employee’s job satisfaction proposed by previous researchers are reviewed and summarized herein in order to use and correlate these to proposed empirical analysis. The quality of work life policies is increasingly becoming part of the business strategy and the focus is on the potential of these policies to influence employee’s quality of working life and more importantly to help them maintain work-life balance with equal attention on performance, commitment at work and job satisfaction. This study proves to be a milestone for the researchers, policy makers, management professionals, statisticians and students to properly understand the concepts of employee’s job satisfaction, work life balance and their relationship. The present empirical study involves descriptive statistical approach. The target population was two hundred and forty respondents. Statistical primary data was collected using questionnaires, and analyzed using statistical package for management and social sciences. The findings of this study emphasized that each of the work life balance policies on its own is a predictor of job satisfaction. The goodness of fit, R = 0.618 showed a good strength of the relationships between independent variables and the dependent variable. The result explored herein makes the recommendation that managers in banks should improve the work life balance policies offered to employees in order to increase their job satisfaction, to improve staff commitment and productivity.
Abstract: The present paper envisages analyzing the relationship between work life balance policies and employee job satisfaction. Specifically, it has been focused here that the work life balance policies lead to attaining equilibrium between professional work and other activities. Under the present study is also examined that the work life balance policies...
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Application of Discriminant Analysis on Broncho-Pulmonary Dysplasia among Infants: A Case Study of UMTH and UDUS Hospitals in Maidguri, Nigeria
Vishwa Nath Maurya,
Madaki Umar Yusuf,
Vijay Vir Singh,
Babagana Modu
Issue:
Volume 4, Issue 2-1, March 2015
Pages:
44-51
Received:
10 March 2015
Accepted:
10 March 2015
Published:
21 March 2015
DOI:
10.11648/j.ajtas.s.2015040201.16
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Abstract: Present research paper envisages investigation of the incidence and prevalence of Broncho-Pulmonary Dysplasia among infants in UMTH and UDUS Hospitals in Maidguri, Nigeria. The data used in this research paper were obtained from the University of Maiduguri Teaching Hospital (UMTH), Maiduguri and Usmanu Danfodiyo University Teaching Hospital Sokoto with sample size of Seventy (70) patients in 2014; Fifty (50) patients from Maiduguri and Twenty (20) from Sokoto respectively. Discriminant analysis model was employed for the analysis with the help of SPSS. The result of the analysis indicates that discriminant model has a perfect classification of new cases in Maiduguri while it has misclassified one of five new cases in Sokoto. This result suggests that the prediction of Broncho–Pulmonary Dysplasia (BPD) is better done with discriminant model in Maiduguri. The study recommends that Doctors and Clinics should adopt the use of the models built by this research to detect the prevalence of BPD among infants.
Abstract: Present research paper envisages investigation of the incidence and prevalence of Broncho-Pulmonary Dysplasia among infants in UMTH and UDUS Hospitals in Maidguri, Nigeria. The data used in this research paper were obtained from the University of Maiduguri Teaching Hospital (UMTH), Maiduguri and Usmanu Danfodiyo University Teaching Hospital Sokoto ...
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