Background & Objective: In vascular (vasculogenic) mimicry (VM), tumoral cells mimic the endothelial cells and form the extracellular matrix-rich tubular networks. It has been proposed that VM is more extensive in aggressive tumors. This study was designed to investigate the rate of VM expression in the stromal cells of invasive ductal carcinoma (IDC) and to find its relationsh...

Owing to the increasing complexity of managing IT infrastructure caused by rapid technological advancements, organizations are transforming their datacenter management environments from on-premises cloud. Datacenters operating in cloud environment have large amounts infrastructure, such as servers, storage devices, and network equipment, operational on all days year, thus causing power overcons...

Networking costs play an important role in the overall costs of a modern data center. Network power, for example, has been estimated at 10-20% of the overall data center power consumption. Traditional power saving techniques in data centers focus on server power reduction through Virtual Machine (VM) migration and server consolidation, without taking into account the network topology and the cu...

Fast IT development combined with diverse range of requests for IT services have led to the establishment of huge energy hungry data centers all around the world. Consolidation is proposed as one of the most effective methods for energy saving in modern cloud data centers. This paper addresses multi target resource allocation for cloud data centers that applies a holistic view to the resource a...

Edge data centers are increasingly deployed to improve response time of intelligent services. Due the high computing demands for such services, edge consume a considerable amount power, generating excessive heat. To mitigate thermal problems with smaller cooling usually trigger software-based management techniques along air systems. Unfortunately, ambient temperature servers often has surge due...

1389-1286/$ see front matter 2009 Elsevier B.V doi:10.1016/j.comnet.2009.04.015 * Corresponding author. Tel.: +1 503 712 3996; fa E-mail address: [email protected] (R. Iy With cloud and utility computing models gaining significant momentum, data centers are increasingly employing virtualization and consolidation as a means to support a large number of disparate applications running sim...

migration of virtual machine (vm) is a critical challenge in cloud computing. the process to move vms or applications from one physical machine (pm) to another is known as vm migration. in vm migration several issues should be considered. one of the major issues in vm migration problem is selecting an appropriate pm as a destination for a migrating vm. to face this issue, several approaches are...

Growing demand of computational power brings increasing scale and complexity of cloud datacenters. However, such increase also generates growing energy consumption and related cost incurred for cooling and maintenance. With concerns of cost and energy saving by both industry and academy, the reduction of energy consumption of cloud datacenters becomes a hotspot issue. Recently, virtual-machine-...