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RISS 인기검색어
- 검색키워드
- 저자 : Bose Sahana (검색결과 3 건)
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An Energy Efficient Dynamic Schedule based Server Load Balancing Approach for Cloud Data Center
Rajesh Bose,Sudipta Sahana,Debabrata Sarddar 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.3
Cloud computing has firmly installed itself as a highly evolved concept for hosting and providing hardware and software resources across networks and the Internet. With rapidly emerging markets, cloud service providers have come up against a significant hurdle. Aspiring to remain firmly competitive in the long run, cloud service providers have realized that maintaining energy efficient controls in place without compromising performance is an aspect that cannot be ignored. With ever expanding sphere of cloud computing, energy demands for supporting computing resources and networks keep on growing. The high rate of demand for crucial energy needs is the salient point that keeps featuring in the horizon of almost every cloud computing service provider. Servers powering cloud computing services need to be supplied constantly with energy to support end users. To help ensure reduced energy consumption, we have examined the application of dynamic time schedule based server utilization method in our work. In this paper, we have applied this approach to cut back generation of heat by attempting to avoid server overloads. Our method involves different power consumption patterns which help saving energy costs. Consequently, carbon emission rates are kept under control. Thus, achieving a green cloud computing model is possible without additional cooling systems which would, in turn, have required more power to operate.
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An Adaptive Cloud Service Observation using Billboard Manager Cloud Monitoring Tool
Rajesh Bose,Sudipta Sahana,Debabrata Sarddar 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.7
Tracking of Quality of Service (QoS) parameters in real-time within a cloud computing system is a major challenge as it involves monitoring each every resource parameter. Such resources may constitute virtual machines, storage devices, network equipment, allied appliances, etc. Examination of physical resources being used to host the virtualized systems is often required on a continuous basis. This is important as virtualized systems also share physical resources among themselves. To monitor resources and services, we introduce a new monitoring tool named Billboard Manager Cloud Monitoring Tool (BMCMT) running on our proposed Billboard Manager system. Through this system, a cloud system administrator is apprised of the status of virtual machines that are running within the cloud system. The Billboard Manager keeps a continuous watch on all the parameters of every virtual machine and physical resource registered with it. At preset intervals, the proposed BMCMT would automatically send reports to the administrators. Every cloud system administrator is provided web login user identification. Should an administrator find it necessary to carry out any activity pertaining to any resource, using the constantly Billboard Manager refreshed hyperlinks on the web page the administrator can access the appropriate management console for further action.
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Assessing the changes in climate extremes over Karbi Anglong district of Assam, North-East India
Datta Pritha,Bose Sahana 대한공간정보학회 2020 Spatial Information Research Vol.28 No.5
The changes in the climate extremes are not only an important indicator of climate change but also their spatio-temporal pattern influences the occurrence of droughts, floods, soil erosion, landslides as well as the livelihoods of the human beings. Therefore the present study tries to investigate recent changes in climate extremes using eight indices developed by the Expert Team on Climate Change Detection and Indices for the Karbi Anglong district of Assam situated in North-East India. This district has gone through several changes in the land use and land cover which is one of the significant factors for bringing changes in the regional climatic conditions. A non-parametric Mann–Kendall test, Modified Mann–Kendall test and Theil–Sen’s slope estimator are used to analyze the trends and trend magnitudes of the extreme indices of temperature and precipitation. The results show that there is an increase in the frequency of the warm days and nights, along with the presence of long dry spells, increasing extreme precipitation events with high intensity throughout the district for a period of 35 years. These changes in the climate extremes can have severe impacts on the availability of water resources which can affect the agricultural activities and reduce the availability of drinking water facilities for the tribal communities.
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