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This paper studied the management and operator schema of spatial data based on metadata. The mining multi-scale DLG Data Organization and Management System is established by ArcEngine and Oracle as development platforms. The system can provide a convenient and intuitive data resource management platform for the mining production manager, and the database functions supplied effective access to the...
Pixel-value-differencing (PVD) based steganographic methods, which take into account the characteristic of human visual system, usually lead to large embedding capacity and good visual imperceptibility. In this paper, a recently proposed PVD-based steganography is further studied. First, by deriving a sufficient condition for data embedding/extraction, we show that the method can be generalized, and...
Q-learning is a machine learning technique that learns what to do and how to map states to actions to maximize rewards. Q-learning has been applied to various tasks such as foraging, soccer and prey-pursuing robots. In this paper, a simple foraging task has been considered to study the influences of the policies reported in the open literatures. A mobile robot is used to search and retrieve pucks...
Statistical approach is often used in time series analysis. One of its uses is to predict the future trend of a time series. This can be applied in many applications such as solar radiation, economics and other researches related to time series. In this paper, we use several classic statistical models to fit the solar radiation time series. The goal is to find a suitable radiation model in predicting...
Attractive features of the UWB technology are low cost and low system complexity. In order to reduce the system complexity of the conventional circuit structure, a novel and simple circuit structure is designed in this paper, and a new fully integrated single-user digital receiver for TH-UWB communications is proposed. Based on this scheme, the theoretical analysis on the whole single-user digital...
Specific to serial digital interface (SDI), this paper advanced a scheme of audio demultiplexing intellectual property module based on FPGA. After explaining the related standard protocols, the kernel architecture of audio demultiplexing IP module and design processing were introduced in detail. Finally, this paper gives an application of audio demultiplexing system based on IP module in SDI. It is...
We propose a general survivability quantification framework which is applicable to a wide range of information system architectures and applications. We show how this framework can be used to derive survivability measures based on different definitions and extend it to other measures not covered by current definitions which can provide helpful information for better understanding of system steady...
The current distribution characteristics of microstrip lines were investigated with the improved spectral domain approach. The Chebyshev polynomials which was selected as basis functions was used to obtain the longitudinal and transverse current distribution on the microstrip lines, then the effective relative permittivity was computed with using small number of basis functions in different rang of...
Sequential patterns are used to discover knowledge in a wide range of applications. However, in many scenarios pattern quality can be low, due to short lengths or low supports. Furthermore, for dense datasets such as proteins, most of the sequential pattern mining algorithms return a tremendously large number of patterns, which are difficult to process and analyze. However, by relaxing the definition...
From the point of view of information technology the immune system is a highly parallel and distributed intelligent system which has learning, memory, and associative capabilities. Artificial immune system is a novel evolutionary paradigm inspired by the biological aspects of the immune system of mammals. The human immune system has motivated scientists and engineers for finding powerful information...
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