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The systematic errors exist in each survey line and with different features in different survey lines, which greatly influence the precision of survey products. The influences of the systematic errors to the interpolation precision have been analyzed, and the influencing rule of the systematic errors on the contour lines on magnetic anomaly map have been discussed. The simulations showed that the...
A novel conical horn antenna loaded with ball cone dielectric is designed in this paper. The design method of the dielectric surface equation is given. The comparison between the smooth wall conical horn antenna and the four types of horn antennas, the dielectric lens-corrected horn antenna, the dielectric loaded horn antenna, the cone dielectric loaded horn antenna, and the ball cone dielectric loaded...
For the low efficiency and high risk of real estate enterprises in China, we design incentives-supervision model of a real estate enterprise based on principal-agent theory and on some characteristics of the real estate enterprises. Subsequently, in order to improve business performance and lower the risks, we study that how the clients of the real estate enterprises design the compensation for agents...
This paper mainly presents an emergency navigation method based on the model of autonomous underwater vehicle (AUV). Dead-Reckoning navigation system depends highly on the reliability of Doppler Velocity Log (DVL) and the failure of DVL will result in divergence of the navigation which would lead the AUV to an emergent situation. So an alternative method is needed to provide velocity messages of the...
Change detection in images of a given scene acquired at different times is one of the most interesting topics of image processing. A new change detection method based on 2-D fuzzy entropies is proposed in this paper to detect change area of the difference image. First, the best segmentation direction of 2-D histogram formed by pixel gray levels and the local average gray levels is found by using Fisher...
The paper introduces an efficient algorithm to build up a protein structure from atomic distance data. An updated geometric build-up algorithm (UGB) has been developed recently that controls numerical errors and is efficient in protein structure determination for cases where only sparse exact distance data is available. In this paper, this algorithm is improved and provides a more effective way of...
Many group-oriented applications and multicast communications often need to verify which group members have sent/received a message. However, individual verification of signed messages would require a significant computation cost. A secure signature scheme with supporting variant batch verifications extremely improves performance. In 2003, Cha and Cheon proposed an efficient identity (ID)-based signature...
One of the most difficulties in image classification is the short availability of labeled images. However, in many cases, we can find a large amount of auxiliary labeled images to help the target classification. The auxiliary images are in similar topics of the target images. For example,donkey may be used as auxiliary data of horse, since they are quite similar with each other. In this paper, we...
The aim of this paper is to investigate the potential of Visible and short-wave near-infrared spectroscopy (Vis/SWNIR) technique used for brand discrimination of milk powder. Fifty samples for each brand were studied. Based on the independent components (ICs) as the input variable obtained from fast fixed-point independent component analysis (FastICA), Least-squares Support Vector Machine (LS-SVM)...
This paper studies efficient complex valued matrix manipulations for multi-user STBC-MIMO decoding. A novel method called Alamouti blockwise analytical matrix inversion (ABAMI) is proposed for the inversion of large complex matrices that are based on Alamouti sub-blocks. Another method using a variant of Givens rotation is proposed for fast QR decomposition of this kind of matrices. Our solutions...
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