The recruitment and migration of macrophages and neutrophils is an important process during the early stages of the innate immune system in response to acute injury. Transgenic pu.1:EGFP zebrafish permit the acquisition of leukocyte migration trajectories during inflammation. Currently, these high-quality live-imaging data are mainly analysed using general statistics, for example, cell velocity...

Hypervisors and Operating Systems support vertical elasticity techniques such as memory ballooning to dynamically assign the memory of Virtual Machines (VMs). However, current Cloud Management Platforms (CMPs), such as OpenNebula or OpenStack, do not currently support dynamic vertical elasticity. This paper describes a system that integrates with the CMP to provide automatic vertical elasticity...

As the number of nodes in high-performance computing environments keeps increasing, faults are becoming common place. Reactive fault tolerance (FT) often does not scale due to massive I/O requirements and relies on manual job resubmission. This work complements reactive with proactive FT at the process level. Through health monitoring, a subset of node failures can be anticipated when one’s hea...

Preface This work is a continuation of the NomadBIOS project, where Asger Jensen and I designed and built what would now be termed a para-virtualized hypervisor for hosting multiple virtual machines on top of the L4 microkernel, and—to our knowledge—were the first to show the feasibility of live migration of virtual machines across a local network. Focusing on grid computing, our idea was to pa...

Purpose This paper examines the impact of social media (including social networking technologies) on migration strategies and integration, focusing on the use of new technologies for information seeking and dissemination, as well as personal communication. Methodology Twenty-six Polish nationals resident in Ireland were interviewed, using semi-structured interviews, in 2008. Findings Results in...

Workload consolidation is a technique applied to achieve energy efficiency in data centres. It can be realized via live migration of virtual machines (VMs) between physical servers with the aim to power off idle servers and thus, save energy. In spite of innumerable benefits, the VM migration process introduces additional costs in terms of migration time and the energy overhead. This paper inve...

Green cloud data center has become a research hotspot of virtualized cloud computing architecture. Since live virtual machine (VM) migration technology is widely used and studied in cloud computing, we have focused on the VM placement selection of live migration for power saving. We present a novel heuristic approach which is called PS-ABC. Its algorithm includes two parts. One is that it combi...

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...

We previously showed the suppression of delayed-type hypersensitivity produced by live BCG-induced, plastic-adhering cells. The present study was undertaken to determine whether prostaglandin was one of the pharmacological mediators involved in this suppression. A high level of prostaglandin E1 was detected in the culture supernatant fluid of the live BCG-induced, adherent cells. Moreover, pros...

Migration research developed significantly in the past decades. However, with life course approach and concept of transnational migration, there are still two different, as yet largely unconnected conceptual perspectives on migration. Both approaches have their merits but also shortcomings. This paper tries to overcome these shortcomings by combining advantages both suggest a unified theoretica...