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In this paper, we develop an interactive screen video streaming-based system to enable the ubiquitous mobile workstyle, which is referred to as personal computer to pervasive computing (PC2PC). The desktop screens of virtualized systems are compressed in the PC2PC servers and delivered to remote end users for stream decoding, rendering, and interactions. We have implemented a system from the scratch,...
We develop an innovative PC2PC (personal computer to pervasive computing) system to enable the secure, robust and pervasive mobile workstyle. PC2PC server compresses the desktop screens of any virtualized system, and delivers the stream through any popular networks to PC2PC client remotely for stream decoding, rendering and end-user interaction (such as keyboard/mouse commands). We have implemented...
Smart parking solutions for big cities are critically important for reducing traffic congestion and vehicle energy consumption in big cities. Visual-based detection methods have been proposed since their maintenance costs are typically lower. However, visual based detection methods in existing systems are not robust due to varying light intensities, occlusions, and their deployment costs can still...
Image retrieval has become an important function in many emerging computer vision applications e.g. online shopping via images, medical health care systems. More and more images are being generated and stored in public clouds. However, recent photo leakage events raise concerns about privacy leaks for images stored in public clouds. In this paper, we present an efficient scalable hierarchical image...
An important goal of smart grid is to leverage modern digital communication infrastructure to help control power systems more effectively. As more and more Internet of Things (IoT) devices with measurement and/or control capability are designed and deployed for a more stable and efficient power system, the role of communication network has become more important. To evaluate the performance of control...
Mobile Crowdsensing is a promising paradigm for ubiquitous sensing, which explores the tremendous data collected by mobile smart devices with prominent spatial-temporal coverage. As a fundamental property of Mobile Crowdsensing Systems, temporally recruited mobile users can provide agile, fine-grained, and economical sensing labors, however their self-interest cannot guarantee the quality of the sensing...
As data grows exponentially within data centers, cluster deduplication storage systems face challenges in providing high throughput, high deduplication ratio and load balance. As the key technique, data routing algorithm has a strong impact on the deduplication ratio, throughput and load balance in cluster deduplication storage systems. In this paper, we propose SS-Dedup, a novel stateful data routing...
Network functions are widely deployed in modern networks, providing various network services ranging from intrusion detection to HTTP caching, for the purpose of performance, security or policy compliance. According to a recent survey [6], network function deployments are ubiquitous: on par with the number of L3 infrastructures. Application or user requirements may specify policies that require flows...
With the pervasive use of GPS-enabled smart phones, location-based services, e.g., Location Based Social Networking (LBSN) have emerged . Point-of-Interests (POIs) Recommendation, as a typical component in LBSN, provides additional values to both customers and merchants in terms of user experience and business turnover. Existing POI recommendation systems mainly adopt Collaborative Filtering (CF),...
The dynamic demilitarized zone (DMZ) model considers both network performance and security, and dynamically responds to traffic demands in real-time. We realize this dynamic DMZ model based on an OpenFlow-enabled switch and controller. In our approach, the controller detects flows with bit rate greater than a given threshold (elephant flows) and controls the switch in order to reroute elephant flows...
Disasters cause the damage of energy management systems, causing power grid monitoring and dispatching interrupt and abnormal operation, imposing a great impact on society. Establishing disaster backup system is in urgent need to improve the reliability and tolerance. The paper presents an analysis and evaluation model of backup system constructing, indicates the advantages of integrated inter-reserve...
Many projects have tried to analyze the structure and dynamics of application overlay networks on the Internet using packet analysis and network flow data. While such analysis is essential for a variety of network management and security tasks, it is difficult on many networks: either the volume of data is so large as to make packet inspection intractable, or privacy concerns forbid packet capture...
The topic of webpage content annotation has been an important research area in the field of human computer interaction. Annotation tools enable "value-adding" info to digital resources, by adding additional data in the form of provenances, understandings, references, comments and other types of remarks. They facilitate learners' and reviewers' understanding and remembering of information...
This paper introduces the IP Multimedia Subsystem (IMS) and its terminal application. It develops a software system of the IMS intelligent terminal based on Windows Mobile. The paper also introduces the development environment and the overall structure of the IMS terminal and describes the main thread. It presents the complete process of the Internet Protocol Television (IPTV) in detail through elaborating...
Web services provide a web-based solution to achieve the interoperability of geospatial information processing — meanwhile specialized users such as hydrological scientists require more advanced services for analyzing and processing huge volumes of data. River channel storage volume calculation is one of important hydrological processes for decision of anti-flood. This paper presents a web processing...
LZpack is a general file system benchmark tool conforming to POSIX.1. It provides an effective method to evaluate different file systems. It also offers reliable data to the developers who use POSIX.1 file system API to design applications. With the cluster testing structure, LZpack can make precise evaluations of file IO performance and file system metadata operation performance. This paper not only...
A Metropolis criterion based fuzzy Markov game flow controller (MFMC) is proposed to cope with congestion problems in high-speed networks. Because of uncertainties and highly time-varying time delays, for such networks the complete and accurate information is not easy to obtain in real time The Q-learning, which is independent of mathematic model and prior knowledge and yet enables achieving good...
In the design of PKI certificate server, the application Held, deployment scope and consumer requirements are often considered synthetically in order to select a compatible structure pattern. At the same time, to support future technology development and possible change in system requirements well, the certificate server structure needs have some good characteristics like flexibility and extensibility...
Multicast join delay is an important metric to evaluate the performance of multicast services. However, there is little analytic study of this metric. In this paper, we convert the multicast join delay into the average node-tree distance problem in the graph, and propose an area-overlay method to analyze the multicast join delay against the different topology sizes and multicast densities. We set...
Data stream management systems (DSMSs) usually need to satisfy multiple QoS requirements of applications, including timing and precision constraints. This paper focuses on the problem of real-time query model and scheduling in a DSMS to meet multiple performance objectives. At first, a mixed real-time query model is introduced which is composed of periodic, continuous and one-time queries with deadlines...
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