Browsing by Author "D'Souza, S."

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Analysis of MapReduce scheduling and its improvements in cloud environment
(2015) D'Souza, S.; Chandrasekaran, K.
MapReduce has become a prominent Parallel processing model used for analysing large scale data. MapReduce applications are increasingly being deployed in the cloud along with other applications sharing the same physical resources. In this scenario, efficient scheduling of MapReduce applications is of utmost importance. Also, MapReduce has to consider various other parameters like energy efficiency and meeting SLA goals besides achieving performance when executing jobs in cloud environments. In this work, we have classified MapReduce Scheduling as Cluster based Scheduling and Objective based Scheduling. We then summarize and analyse the different class of schedulers highlighting the strong points and limitations of each of the scheduling approaches. The Adaptive scheduling techniques provide dynamic resource management and meet performance goals. The Energy efficient scheduling techniques aim to cut data centre costs by using different approaches. Finally, we discuss the current challenges and future work. � 2015 IEEE.
Analysis of MapReduce scheduling and its improvements in cloud environment
(Institute of Electrical and Electronics Engineers Inc., 2015) D'Souza, S.; Chandrasekaran, K.
MapReduce has become a prominent Parallel processing model used for analysing large scale data. MapReduce applications are increasingly being deployed in the cloud along with other applications sharing the same physical resources. In this scenario, efficient scheduling of MapReduce applications is of utmost importance. Also, MapReduce has to consider various other parameters like energy efficiency and meeting SLA goals besides achieving performance when executing jobs in cloud environments. In this work, we have classified MapReduce Scheduling as Cluster based Scheduling and Objective based Scheduling. We then summarize and analyse the different class of schedulers highlighting the strong points and limitations of each of the scheduling approaches. The Adaptive scheduling techniques provide dynamic resource management and meet performance goals. The Energy efficient scheduling techniques aim to cut data centre costs by using different approaches. Finally, we discuss the current challenges and future work. Â© 2015 IEEE.
Effective governance through quality in healthcare organizations: An empirical study
(Serials Publications serialspublications@vsnl.net, 2017) Muhammed, K.M.; D'Souza, S.; Sheena, u.
Conventional methods of quality audit, accreditation and awards are the key aspects of governance in delivering performance excellence. Governance needs to be encouraged and measured through the organisational excellence models. This paper makes an attempt of Malcolm Baldrige National Quality Award criteria (MBNQA) to measure and evaluate performance in the healthcare system. A total of 150 scale items were used to measure the constructs in the research framework. The model fit was determined through factor analysis, regression analysis, and coefficient parameter estimates. A total of 360 administrative executives were considered using purposive sampling technique from case healthcare organisations. The performance gap analysis revealed most of the pubic healthcare shown below average performance. There was a significant relationship between MBNQA dimensions. Further, the study indicated the presence of one type of strategic determinants fit to compensate for deficiencies in other. The study highlights healthcare organisations has potential implications to embracing quality management system, perform Strategic thinking and overcome issues of Governance. © 2017 Serials Publications Pvt. Ltd.
Juglans regia seeds have effects on platelets and peripheral fat deposition in the aorta and heart of C57BL/6J mice fed with normal and high fat simple carbohydrate diet
(Bentham Science Publishers B.V. P.O. Box 294 Bussum 1400 AG, 2016) Prabhu, S.G.; Karkala, S.; Roy, N.; D'Souza, S.; Abraham, A.
Background: Consumption of nuts particularly walnuts has been widely recommended for lowering the risk of coronary heart disease; however, very few studies have evaluated the potential unfavourable effects that Walnut seeds might have in vivo. Objective: To investigate the long-term effects of Juglans regia seed supplementation in specially formulated feed when fed to developed mice model. Method: C57BL/6J male mice were divided into four groups, labelled, C (control), T (High Fat Simple Carbohydrate-HFSC), Cw (control + walnut) and Tw (HFSC+ walnut) based on diet. Four mice from each group were sacrificed at the end of the first and fifth month respectively. Blood samples were collected every month. Bleeding time, blood platelet number and morphology were studied. Histopathological analysis of heart and aorta were also performed. Results: Groups Cw and Tw showed a significant increase in platelet count; however, platelet activation was not detected. There was a trend to an increase in bleeding time in group Cw. Expanded lumen diameter of the aorta was observed in Cw and Tw mice initially, however, it was found to constrict by the end of the study. A large amount of peripheral fat deposition in the aortas of Cw and Tw was observed, which increased through the course of the experiment. Conclusion: Kashmiri walnut seed supplementation was found to reduce the signs in shape change of platelets as well as increase platelet number with a trend to an increased bleeding time. This observation could be of medical interest. Histopathological analysis of heart and aorta showed lipid sequestration which merits further investigations. © 2016 Bentham Science Publishers.