stem/progenitor cell based therapeutic approach in our daily routine clinical practice, has been elusive dream in medical sciences and improvement of stem cell homing as one of major challenges in cell therapy programs, has been considered a promising milestone. it has been proved that stem/progenitor cells exhibit a homing response to injured tissues/organs, mediated by interactions of chemoki...

Software-defined networking (SDN) promises to improve the programmability and flexibility of networks, but it may bring also new challenges that need to be explored. The purpose of this technical report is to assess how the deployment of the SDN controllers affects the overall availability of SDN. For this, we have varied the number, homing and location of SDN controllers. A two-level modelling...

For efficient Internet Connectivity in MANETs, multiple gateways and potentially multi-homing and hand-over need to be supported. We compare how default routes and tunneling to gateways support this. We find that tunneling is more efficient and flexible compared to default routes. In fact, we show that default routes will not operate correctly in some situations, particularly when there are mul...

The current wireless communication system in Iraq faces several challenges during users’ handoff, especially with the fast growth of users and demands. This is also a global issue; therefore, quality service (QoS) measures have rapidly become more important developed over years. complexity between diverse applications underlying QoS architectures leads to these deployment problems, which decrea...

This paper develops a duopoly model for user-generated content (UGC) platforms, which compete consumers and producers in two-sided markets characterized by network externalities. Each platform has the option to invest quality assurance (CQA) system determine level of advertising. Our reveals that effects are pivotal shaping platforms’ optimal strategies user behavior, specifically terms single ...

objective(s):the limited homing potential of bone-marrow-derived mesenchymal stem cells (bm-msc) is the key obstacle in msc-based therapy. it is believed that chemokines and chemokine receptor interactions play key roles in cellular processes associated with migration. meanwhile, mscs express a low level of distinct chemokine receptors and they even lose these receptors on their surface after a...