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Permission-based security model of Android restricts applications to access specific resources, but malicious applications can invade more easily in such user-centric pattern. Through the analysis of the Android Permission-based security model and the permission features of Android applications, we establish the permission model to quantify the functional characteristics of the application, and then...
Social tagging is one of the most important characteristics of web 2.0 services. Different from traditional recommendation algorithms, in social tagging systems, recommendation algorithms involve the ternary relations between users, items and tags. And algorithms that support integrated multi-mode recommendations are very appealing. We propose a multi-mode recommendation algorithm based on higher-order...
As network technology keeps growing drastically and applications over IP network become more and more popular, the issue of network performance has increasingly drawn attention. Network performance data is an important reference in the process of analyzing network behavior, solving network fault and forecasting new services. In this paper, we put forward a distributed network measurement system based...
This paper concentrates on the evaluation system of hot topics in the online news about the emergency events. First, the overall technology framework of the system was established and description was formulated on the key issues need to be resolved prior to the evaluation of the hot topics. Focusing on the vector representation of the news documents and clustering algorithm of the news topics, a modified...
An existing network video monitoring system has already realized putting independent video sources online, to monitor, manage and share resources in unison, in use of IP-based network. With the popularization of wireless network, system should resolve the bandwidth bottleneck in order for good of support for wireless video's uploading technology. So as to improve user experience, it is very important...
The main objective of this study is to explore how to design the user interfaces of handheld device based on Android. The methodology of UI design based on Android is summarized through discussing the different tasks of three representative roles --requirements analyst; UI designer; software engineer in the life cycle of software development. Most of the current research is to discuss the realization...
A software model of IPECO-PI is established. The model includes three parts of Software Engineering which are Software management, Software development and Software Process Improvement. Every part consists of lots of processes which come from a unified software process library. According to a conceptual framework and a project's characters, a new model can be formed from the IPECO-PI model. So this...
Concerning the system of hot topics detection about the emergency events, an overall technical framework is established to implement the system. Description and solution strategy about the key issues in the four components of the system are provided. In terms of the content and structure features of the news reports as well as the distribution feature of the report sources, the text clipping method...
With the evolution of the IP Multimedia Subsystem (IMS), service interaction and management has received an increasing amount of attention. Service Capability Interaction Management (SCIM) is introduced as a component of Service Delivery Platform (SDP) for providing service interaction of IMS. Although there is much work on the standardization of SCIM, architectures based on industry standards like...
This paper presents a new approach to handle multi-objective optimization problems (MOP) by incorporating logistic mapping function into the process of NSGA-II. NSGA-II is a well-known evolutionary algorithm for optimization, it is famous for its small computational complexity and simpleness, its ability to maintain a good spread of solutions makes it converge better in the obtained non-dominated...
With services provided by mobile operators enriching and demands on quality of service increasing, to provide better services and make full use of the underlying network has become an urgent task. To solve these problems, the overlay network is proposed, it can make a virtual network on the basis of different physical networks. In this paper we make a discussion on the QoS framework of IMS overlay...
Due to its open-source advantage and powerful APIs, Android has attracted a large number of developers. Android's SDK is based on Java, how to reuse excellence C/C++ open-source projects is a problem. This paper first discusses a new component development approach for kernel-level development by using JNI (Java Native Interface) technology, and then describes the principle of FFmpeg (open-source codec...
As a new open-source smart mobile phone platform, Android has become one of the popular cell phone systems. Many users like to watch Video by a mobile phone, but the original media player in Android has many limits. For example, the media formats supported are few and the decode efficiency is fair. First, the paper designs a new media player system structure based on hiberarchy. Then, the paper designs...
Android is a widely anticipated open source operating system for mobile devices that provides a basic operating system, an application middleware layer, a Java software development kit (SDK), and a collection of system applications. Since the source code of Android was released to people, a large community of developers has organized around Android. This paper studies the open source project of FFmpeg...
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