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This paper proposes a novel approach for visual query compression with a bank of transforms selected on Grassmann manifold. Instead of using single transform and quantization pipeline for all the features extracted from an image, we group the key point features according to their local embedding subspace geometry and organize them into different leaf nodes of a KD-Tree which was built from a large...
The article puts forward an algorithm that combines Genetic Algorithm (GA) with Simulated Annealing (SA) which lower the energy consumption of the cloud data center. The energy-efficient virtual machine placement algorithm primarily accomplishes the population initialization according to the virtual machine placement rule and crossover, variation and correction. Finally, filter the new population...
An Elastic Machine (EM) consists of networked fine-grained resources, such as CPU, memory, network and storage, dynamically composed from distributed resource pools offered by a RaaS (Resource-as-a-Service) cloud. EM allocation in RaaS clouds differs from VM placement in IaaS clouds in that it needs to consider the network conditions between the fine-grained resources. To address this problem, this...
Sensor network has become an increasingly attractive and advantageous subject recently. More and more demands of data storage and data query have been raised in soft-defined sensor network. Bonnet et al. [1] investigated the problem of database in sensor network. In most of such scenes, data is stored in server instead of local. For this reason, data security [2] is very important. While encryption...
Most of today's data centers are equipped with servers that rely on air cooling, which is well known to have low cooling efficiency due to undesired air recirculation. As a result, many data centers have started to consider liquid-cooled servers for improved cooling efficiency. Since data centers normally replace only a portion of their servers at a time, an important problem is where in the data...
Data center power optimization has recently received a great deal of research attention. For example, server consolidation has been demonstrated as one of the most effective energy saving methodologies. Likewise, traffic consolidation has also been recently proposed to save energy for data center networks (DCNs). However, current research on data center power optimization focuses on servers and DCN...
New development of classification system and safety-protection strategy of geologic survey data is summarized for searching optimized solutions of disaster tolerance technology for mass geologic survey data acquired in recent years by Chinese geological organizations. The new disaster tolerance technology solution which is building on the basis of extensive research and review of empirical data from...
This paper is an introduction to software performance automated testing and theory. It introduces the features of Open Xml storage and SQL Server storage. Then this paper sets three state scenes and chooses different test automated tools respectively. Finally, it uses tools to monitor software performance index from these two data storage systems. Results are then analyzed, comparing the quality performance...
HTML5 is a great development of Web standard in nearly more than 10 years. It provides a powerful support for RIA(Applications of Rich Internet).Based on a comparison with other rich client technologies, a rich client Web architecture based on HTML5 is proposed. The paper emphatically analyzed the theory and technology of the client control in the architecture. The experiment proves that the structure...
In this paper, we describe a mobile application that synchronizes the playback of a video stream among a group of mobile devices while the video playback is controlled (e.g. pause, resume, seek) by one of the devices. This feature allows a group of people to collaborate remotely in real-time through watching the same video on their mobile devices. To make this application work for heterogeneous mobile...
Cardiovascular disease (CVD) has been the most critical health problem in China. Large number of researches and clinical experiments has demonstrated that home healthcare helps detect CVD at early stage. This work designed a mobile health system. Physiological signals are acquired by portable apparatus and transferred to the home healthcare gateway or personal mobile devices and finally to the community...
Aiming that now most of Web 1.0 websites are not updated to 2.0 because of cost and time, the paper designs a architecture of Web 2.0 Launch Tool + Management Server to update Web 1.0 website to 2.0 more easily and quickly, which was developed with asynchronous interaction, no refresh of AJAX and Connection pool technology, XHR and DWR. The reality proves this system is very convenient. The technology...
As REST architectural style gains popularity in the web service community, there is a growing concern and debate on how to design Restful web services (REST API) in a proper way. We attribute this problem to lack of a standard model and language to describe a REST API that respects all the REST constraints. As a result, many web services that claim to be REST API are not hypermedia driven as prescribed...
In recent years, REST (Representational State Transfer) has received much attention for designing scalable web services in various domains. There is an increasing interest on its application to real-time communication web services. Based on a case study of CSTA services, we found that communication services exhibit a combination of complex message exchange and stateful behavior patterns, including...
Teachers evaluation is the important part of teaching management works in universities, which is helpful for supervising and responding teaching situation and teaching effectiveness. This paper introduces the design idea and implementation methods of the teaching evaluation management system based on Web. The teaching evaluation management system is designed on the actual teaching evaluation management...
First of all clarify the research background, and introduces the necessary theory and techniques involved in the relevant. Through the management information system access system resources study of various control methods, using RBAC access control technology to design and implement a middleware based rights management that can run on a variety of hardware and software platform to facilitate the conduct...
A kind of personalization extension of Portal framework is studied. Based on the establishment of user pattern which can describe the characteristics of users' behaviors at runtime, a dynamical mechanism for Portiet composition driven by user pattern is presented, which is helpful for improving user experience. The prototypical experiments on the open-source Liferay framework verify the feasibility...
Along with the improvement of cloud technologies, we envision that thousands of web applications whether owned by individuals or enterprises will be migrated into cloud. These web applications share the cloud resources while require different quality of service guarantees and management policies. It is challenging while with abundant innovation opportunities given the easy and dynamic provisioning...
Pressure test is an essential work of Web application performance test and one of the important means to ensure software quality and performance. Pressure test can find a lot of unexposed problems under normal circumstances, which means that it can find more system bugs than others. Pressure test tests the load conditions of system, devises test scheme for the system performance indicators and verifies...
The freeway network has strong geospatial distributing characteristics, and is easy to implement the visual management by means of geographic information system (GIS)[1]. Thus, the paper has proposed a new design model of the provincial freeway network management information system (MIS) based on GIS. The management model based on the client/server architecture mode mainly supports such functions...
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