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The widespread deployment of smart phone and smart object technologies have fostered the rise of People-centric Internet of Things. People-centric Internet of Things is the direct motivation and drive for agile and social manufacturing applications in future Industry 4.0. However, it is challenging for human to organize services around with crowdsourced, open, decentralized smart objects. In this...
Since increasing citizen are associated with a major increase in street vehicles and air pollution, and air pollution exposure is a significant risk to urban dwellers. Spatially and temporally high-resolution air pollution measurement is highly concerned. Conventional people-centric sensing approaches is based on vertical and closed way, and measurement are based on private sensor accessing, gateway-based...
The wireless signal needs to constantly test to discover and correct signal problem since its planning and construction. Currently, most of the existing wireless signal testing equipment are testing on the road, and there are many shortcomings. The real-time wireless signal testing and analyzing system based on websocket has realized the mobile, networked and real-time road test for the wireless signal,...
Adopting SSDs as caches for HDD arrays has gained popularity in datacenters because SSDs are superior in handling random reads that HDDs cannot efficiently deal with. Two types of flash memory cells are available for building SSD caches, single-level cells (SLC) and multi-level cells (MLC). MLC is more appealing than SLC because it can achieve higher cache capacity at the same cost. However, we see...
Managing complex enterprise networks requires an understanding at a fine granularity than traditional network monitoring. The ability to correlate and visualize the dynamics and inter-relationships among various network components such as hosts, users, and applications is non-trivial. Network security visualization is a highlighted topic of network security research in recent years, The existing research...
Virtualization technique is one core of cloud computing. For the virtualization security problem introduced by cloud computing, especially for the private cloud computing, a solution based on divide-conquer strategy is proposed. First, the security risks induced by virtualization are analyzed and classified, and then based on the divide-conquer idea, for each kind of security risk, some corresponding...
This paper presents a survey of identity management from the perspectives of development stages and functions variety of Identity Management. The definition and core concepts of identity and identity management have been discussed deeply. Identity Management models including isolated model, centralized model, and federated model are grouped by components varying and functions changing. Based on the...
Integration and sharing of multi-source heterogeneous spatial data has always been the obstacle of GIS application. SQL Server spatial is a new important data source, how to integrate it into GIS platform is a problem worth studying. This study uses spatial data middleware technology to realize the seamless integration of SQL Server spatial data in MapGIS K9 platform. In this research, the data exchange...
In this study, we consider an optimization problem concerning about how to build a multicast tree to deliver continuous multimedia streams to a large number of mesh clients on the wireless mesh networks simultaneously. In order to provide high-quality streams to users, we need to allocate non-overlapping channels to communication links to avoid interference. Since the number of non-overlapping channels...
As personal multimedia devices become mainstream consumer products, an energy-aware on-demand video streaming system for portable devices is critical. A critical component of an energy-aware video streaming system is an accurate energy prediction scheme for video decoding. In this paper, we propose the first content-aware energy predictor for video playback. We correlate video attributes with decoding...
Due to the soaring of knowledge-based economy and the blooming growth of e-business, the way to effectively accumulate and manage valuable data of knowledge has become an important issue for all the industry. There are many knowledge management systems built for large corporate companies. However, not many open source systems are available for small research communities. Currently, Wiki has not only...
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