With the increasing popularity of cloud computing, the cloud data center suffers from both limited resources and the variation of users' requests. One important feature of cloud computing is on-demand scaling, enabling the fluctuation of one user's resource demand. However, amongst pre vious work concerning the virtual machine (VM) placement in data centers, satisfying requested resources of VM...

Cloud computing is a result of the continuing progress made in the areas of hardware, technologies related to the Internet, distributed computing and automated management. The Increasing demand has led to an increase in services resulting in the establishment of large-scale computing and data centers, in addition to high operating costs and huge amounts of electrical power consumption. Insuffic...

In this paper, a new mathematical model for the problem of job scheduling in virtual manufacturing cells (VMC) is presented to minimizing the completion time of all jobs. Sequence dependent setup times of machines is considered and lot-streaming is possible. In Virtual manufacturing cells, each job has a different processing path and there is a set of machines for processing each operation. The...

Abstract Infrastructure as a service offered by the cloud computing is one of most important service. It allows physical machines to get virtualized creating many instances virtual machines. Mapping on machine has become major challenge in data centres. The dynamic placement methods are used solve this issue with objectives like maximizing resource utilization, minimizing energy consumption and...

In an infrastructure as a service (IaaS) cloud, tenants want to receive reliable services and the cloud provider intends to reducing intra-network traffic in order to provide more services. Achieving the requirements of both sides is a challenging problem. Current tenant abstraction models cannot provide enough information for the cloud provider to optimize network traffic while satisfying reli...

Increased energy consumption in Cloud Data Centres (CDCs) increases the carbon footprint. Efficiency of data centres thus needs to be improved through server consolidation using effective virtual machine (VM) placement and migration techniques minimizing number active physical machines (PMs). One problems is how operationally allocate VMs PMs. These allocations have both operational costs issue...

The world is currently witnessing many successive changes in several fields, especially the field of healthcare which forced countries to impose health policies provide good services, drew sector strategies focusing on digital transformation aspect. E-government applications are used by dozens millions users. This high usage generates a huge network traffic and needs reliable cloud computing pl...