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With the rapid proliferation of camera-equipped smart devices (<i>e.g.</i>, smartphones, pads, tablets), visible light communication (VLC) over screen-camera links emerges as a novel form of near-field communication. Such communication via smart devices is highly competitive for its user-friendliness, security, and infrastructure-less (<i>i.e.</i>, no(More)
With energy and power costs increasing as the size of IT infrastructures grows, virtualization technologies enable scalable management for large scale of virtual machines running on physical systems, and virtualizationbased green cloud computing paradigm is springing up to provide a scalable and energy-efficient network software application (NetApp in(More)
ChinaGrid Support Platform (CGSP) is proposed to provide grid toolkit for ChinaGrid application developers and specific grid constructors, in order to reduce their development cost as greatly as possible. CGSP extensible and reconfigurable framework, which satisfies the expansion and autonomy requirement of ChinaGrid, is mainly discussed in the paper. In(More)
OS-level virtualization is often used for server consolidation in data centers because of its high efficiency. However, the sharing of storage stack services among the colocated containers incurs contention on shared kernel data structures and locks within I/O stack, leading to severe performance degradation on manycore platforms incorporating fast storage(More)
Phosphorus is an important limiting nutrient in many ecosystems. Consequently, there is increasing interest on phosphate uptake and algal growth due to the increasing frequency and magnitude of algal blooms induced by eutrophication. The co-existence of surface adsorbed and intracellular phosphorus pools indicate that phosphate uptake by phytoplankton is,(More)
System call interposition is a powerful method for regulating and monitoring program behavior. A wide variety of security tools have been developed which use this technique. However, traditional system call interposition techniques are vulnerable to kernel attacks and have some limitations on effectiveness and transparency. In this paper, we propose a novel(More)
Efficient resource management in the virtualized data center is always a practical concern and has attracted significant attention. In particularly, economic allocation mechanism is desired to maximize the revenue for commercial cloud providers. This paper uses overbooking from Revenue Management to avoid resource over-provision according to its runtime(More)
Network Virtualization has recently emerged to provide scalable, customized and on-demand virtual network services over a shared substrate network. How to provide VN services with resiliency guarantees against network failures has become a critical issue, meanwhile the service resource usages should be minimized under the strict constraints such as link(More)
The purpose of virtual computing environment is to improve resource utilization by providing a unified integrated operating platform for users and applications based on aggregation of heterogeneous and autonomous resources. With the rapid development in recent years, hypervisor technologies have become mature and comprehensive with four features, including(More)
Workflow is an important part of service grid. It provides a mechanism to describe the various interactions between services, and it can compose new services out of existing ones dynamically. Grid workflow description language is the basis of the establishment and execution of workflows. In this paper, being extended according to the characteristics of grid(More)