In this paper, we show the development of resource management server to enable production Cloud services easily based on OpenStack. In recent days, Cloud computing technologies have progressed and many providers have started Cloud services. Some providers use proprietary systems but others use open source IaaS software such as OpenStack and CloudStack. Because the community of OpenStack develop...

It has been shown recently that the amplitude of the creation of n real scalar particles by one virtual boson near n–particle threshold exhibits exponential behavior at n ∼ 1/λ. We extend this result to the processes of multiparticle production at threshold by two virtual bosons. We find that both the tree–level amplitude and leading–n loop corrections have the same exponential behavior, with t...

Jet production in ep collisions is sensitive to the partonic structure of photon. The latest measurements of dijet production from the H1 experiment provide new results of the gluon density of real photons at low x and, for the first time, on the partonic density of virtual photons. Properties of the photon remnant were measured as a function of the hard scale defined by the pT of the jets. The...

Global competition and rapidly changing customer requirements afe forcing manufacturing enterprises to assume new production styles and configurations. Today, the agility has to concem not just operations and technology aspects but also organization: in this framework the concept of virtual organisation seems to be a new emerging paradigm to improve manufacturing firm competitiveness. Several r...

introduction the average annual precipitation in iran is about 250 mm that is not regularly distributed spatially and temporally. more than 70 percent of total precipitation is not accessible due to evapotranspiration. total renewable water resources of the country are estimated to be around 130 billion cubic meters. in spite of limitation in water resources, they are not used properly. agricul...

background: with the recent spread of virtual learning programs in universities, especially in the field of medical sciences, libraries play a crucial role to support these programs. this study aimed at investigating the skills required by librarians to support virtual learning programs in isfahan university and isfahan university of medical sciences.   methods: this was an applied survey study...

there has been a recent development and explosion of interest among academicians across a wide range of disciplines in the use of virtual class room. utilization of the virtual class room as a laboratory experimentation for teaching and learning has increased significantly in recent years as development tools for web based applications have become easier to use and computers have become more ca...

This paper describes design issues involved in providing remote users with internet access to laboratory or production line based hardware. Simulation tools for the robotic hardware were developed using C++ and VRML 97 to create a desktop virtual reality environment which improves the visualisation of the manipulator hardware and associated workspace. Communication between the remote user and p...