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By investigating the current situation of university library's digital and informational development, this paper analyzes the opportunities and challenges brought by cloud computing technology to the development of libraries. Two strategies of renting cloud services and building cloud platform are put forward to realize the cloud computing service of Digital Library in big data environment.
Vision-based underwater navigation and object detection requires robust computer vision algorithms to operate in turbid water. Many conventional methods aimed at improving visibility in low turbid water. In this paper, we propose a novel contrast enhancement measurement for different enhancement methods' assessment. As a rule to compare the performance of different image enhancement algorithms, a...
Digital electronics is electronics that transfer of receive digital signals. The signals handled by digital electronics are discrete bands of analog levels -- not the continuous ranges. Levels within a band of values represent the same value in digital electronics system. In many cases, the number of these states is two, or binary code which means states are separated by two kinds of voltage bands:...
In order to compute the natural constant, three calculation methods were designed by Excel. The result can be accurate to 9 or 13 digits after the decimal point which is computed by limit or series. But the one computed by Excel according to human method can be accurate to more than 50,000 digits after the decimal point.
As tenants take networked virtual machines (VMs) as their requirements, effective placement of VMs is needed to reduce the network cost in cloud data centers. The cost is one of the major concerns for the cloud providers. In addition to the cost caused by network traffics (N-cost), the cost caused by the utilization of physical machines (PM-cost) is also non-negligible. In this paper, we focus on...
The modern information technology is based on the computer technology, the network communication technology and the multimedia technology, and the multimedia technology is based on modern information technology. Due to the intelligence, interaction, openness, and sharing of multimedia technology, the multimedia teaching has an increasing proportion, and plays a more important role in modern college...
In recent years, the modern information technology, whose core includes the computer technology, network communication technology and the multimedia technology, has developed rapidly. It has become the important way to spread knowledge, and impacted deeply to the traditional teaching concept, teaching content, teaching process and teaching resource. This article elaborated the changes of the teaching...
Inconsistent research on data mining based on rough set theory focuses on how to deal with the problems caused by inconsistent data and how to increase the adaptability of data mining system by inconsistent data. We propose a hypothesis that some inconsistent data are likely to contain important knowledge easily neglected. By analyzing the causes of inconsistent data, we point out some inconsistent...
To solve the problem of security evaluation of e-commerce system, this paper builds the guideline of E-commerce system security evaluation from the management and technology perspective, and presents the basic optimal nodes-based evaluation model as well. Next, based on the rough set theory and methods, this paper investigates the attributes reduction algorithm for e-commerce system security evaluation...
A data acquisition system is designed for biosensor based on nanopore, used the chip of TI TMS320VC5509A and Cypress Cy7C68013A. The major goal for our system is to convert analog data to digital data and transfer data to computer. Our system can be used in biological signal data convert already. The experimental results already proved the availability of the system. Because of using of the DSP chip...
Synchronization and fault tolerance of processes are emphasis in the distributed systems research, but only a few people involves in the mathematics model used in processes synchronization and fault tolerance yet. This paper takes distributed system as an event driven system, classify the events that cause system state variety into four classes, and proposed an extended finite state machine (EFSM)...
Thumbnail cropping helps improve thumbnail readability by cropping images before shrinking them. In this paper we propose a learning based method for automatic thumbnail cropping. To this end, we use a support vector machine to learn a discriminative model that simultaneously captures the saliency distribution and spatial priors. The model is then used to determine the best cropping rectangle. The...
A scheme is presented for orienting application, which is based on micro-magnetic sensor and accelerometer, and the scheme can solve the orienting problems well. We have an optimized arrangement of the two sensors' positions, whi ch provides premise for establishing reference coordinate. An algorithm for completely oriented sensing is applied. In the algorithm, we take a concept of relative coordinate,...
Hardware-in-the-loop (HIL) simulation is a cost effective technology for the design and evaluation of the aerial bombpsilas guidance and control system. In this paper, a feasible formula for aerial bombpsilas guidance and control system ground testing is presented. The structure and working process of the HIL simulation system are discussed in detail. The trajectory design method of the aerial guided...
E-commerce, or business done on the Internet has become more and more popular. Meanwhile, the number of customer reviews for products on the internet grows rapidly. For a popular product, the number of reviews can be in hundreds. As a result, the problem of ??opinion mining?? has seen increasing attention over several years. In this paper, we proposed a statistical method to extract product features...
We investigate the integration of C implementation of fast arithmetic operations into MAPLE, focusing on triangular decomposition algorithms. We show substantial improvements over existing MAPLE implementations; our code also outperforms MAGMA on many examples. Profiling data show that data conversion can become a bottleneck for some algorithms, leaving room for further improvements.
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