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Crowdsourced content sharing has become a fast-growing activity in today's online social networks, where contents of interest are created by diverse source users and conveyed over the network as friends view and reshare. The rapid and boundless propagation in a mobile crowd however often creates severe bottlenecks on the server side and incurs significant energy and monetary costs on the mobile side,...
Cloud computing is the most popular computing model in the current information industry, and cloud is a complex system with a large number of servers and users, it has to schedule tasks frequently among the servers and manage its computing resource flexibly to meet the demand of the users. With the growing service demand and higher QoS requirement of the users, the performance of the system is facing...
Android has become the most popular mobile platform due to its openness and flexibility. Meanwhile, it has also become the main target of massive mobile malware. This phenomenon drives a pressing need for malware detection. In this paper, we propose TrafficAV, which is an effective and explainable detection of mobile malware behavior using network traffic. Network traffic generated by mobile app is...
With the emerging of IoT (Internet of Things), the scale of Internet is extended extremely and large amounts of information are produced. Most previous work only focuses on the interconnection and interoperability problems among different entities and enterprise application systems in a dynamic interaction environment. However, the problems of how to efficiently disseminate the sensing information...
This paper considers the actual needs of the hospital for data storage and the characteristics of the Hadoop framework, builds a clinical data center using Hadoop, Hive and so on which are widely used in modern society. This new clinical data center overcomes the shortcomings of traditional Unix servers, meets the hospital demand for data storage and provides Cloud Computing platform. First, this...
Virtual machine (VM) management in cloud data center is an important problem that remains to be effectively addressed. There has been a considerable amount of work investigating the management of physical-to-virtual resource mappings to improve the efficiencies of resource usage and power consumption in data center. However, these different management objectives are conflicting. One solution can't...
Transfer data in only one network segment is not a sticky work. However, communication between different network segments is worth studying. Especially when one or both sides network segment behind NAT devices. This text has a brief description about the classification of NAT, and explains the problems that need to be solved about NAT traversal. According to the features of NAT and the needs of our...
Cloud computing is a new pattern of computing paradigm which enables the users to transfer their work to the cloud. The tremendous storage and computing resources provided by the cloud liberate the users from the shortage of local resources. However, as the adoption of cloud computing is emerging rapidly, the security and privacy issues are still significant challenges. In a cloud environment, a user...
The development of the mobile Internet brought about by the thriving mobile intelligent terminals has made it possible to access to the Internet anytime and anywhere. While people enjoy the convenience, they also suffer from a series of security threats caused by cyber-attacks. IPS brings reliability and security in a network system and is regarded as one of the most popular security devices. However,...
While there has been active development of the Linux kernel, little has been done to address kernel bugs with gradually increasing lifetimes. From our statistical analysis, the average lifetime of kernel bugs in each kernel development cycle has increased 2.87 times from the years between 2008 and 2012. This indicates the instability of Linux kernels. To reduce bug lifetime, we present a Kernel Instant...
Cloud services are fundamentally supported by Data Center Networks (DCNs). With the fast growth of cloud services, the scale of DCNs increases rapidly, leading to a big concern on system scalability due to multiple constraints. Based on optical switching and transmission, this paper proposes a scalable DCN architecture with distributed placement of optical switches and server racks at different nodes...
Data center networks (DCNs) generally adopt Clos network with crossbar middle switches to achieve non-blocking data switching among the servers, and the number of middle switches is proportional to the number of ports of the aggregation switches in a fixed manner. Besides, reconfiguration overhead of the switches is generally ignored, which may contradict the engineering practice. In this paper, we...
The limitation of processing capacity, memory capacity, I/O and bandwidth of single network server became the bottleneck in providing better services for the clients in practice. In order to solve this problem, we developed a new Java message service based Message Oriented Middleware that support high reliability cluster. Then we analyzed the detailed designation and implementation of the main components...
The heterogeneity and mobility inherent in a large-scale wireless sensor network makes it difficult to develop different applications. The difficulty primarily arises from weak and intermittent connections, dynamic reconfiguration, and limited power availability. The challenge in building a distributed service adaptive to environmental changes lies in the degree of data transmission and the adaptation...
Traditional Chinese medicine (TCM) is developed from clinical practice. Rich information can be obtained from the medical record of TCM. National clinical research data center of TCM is constructed to collect the clinical medical data of TCM from hospitals all over the country. The construction framework of national clinical data center of TCM includes infrastructure construction, software construction,...
In this paper, we propose a standardization scheme for a new paradigm: Advanced Internet of Things (AIoT), which is based on our proposed Unified Object Description Language (UODL) and allows: 1) identifying and interconnecting every object with a standard format, 2) making it easier and flexible for the third party control and management. The purpose of AIoT scheme is to build a smart world of always-on,...
As an emerging portable service platform, OSGi (Open Service Gateway Initiative) is taking a more and more important role in modern Service Oriented Architectures (SOA). In order to improve the capability of using distributed services in network-based OSGi applications, R-OSGi (Remote OSGi) is invented. However, network-based SOA applications are prone to the big impact on Quality of Service (QoS)...
The Data Distribution Service for Real-time Systems(DDS) mainly describes how data is dealt with in a single node, but not the mode of data-exchange among nodes. The centralized label publication subscription mechanism is used for data-exchange in this article. In the wireless network, especially low speed wireless network of battlefield, it is important to research on performance of this mechanism...
A challenge in the convergence of heterogeneous networks is how to combine the ubiquitous resources and provide the diversified individual services. By this, the vision of adaptive and context-aware service provision becomes possible and offers new opportunities for pervasive computing. In this paper, we describe an approach that addresses the convergence of wireless personal area and wide area networks...
Traffic classification, a branch of passive network measurement, becomes more and more important for network management. As traditional traffic classification techniques like port-based and payload-based techniques become ineffective for complicated internet applications which use dynamic port number and encryption techniques to avoid detection, machine learning based techniques gained more and more...
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