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Search Results: 1 - 10 of 78608 matches for " Yonghong Chen "
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Digital Image Watermarking Based on Mixed Error Correcting Code  [PDF]
Yonghong Chen, Jiancong Chen
Journal of Information Security (JIS) , 2012, DOI: 10.4236/jis.2012.32018
Abstract: In this paper, we present a novel technique based on a mixed Error Correcting Code(ECC)-the convolutional code and the repetition code to enhance the robustness of the embedded watermark. Before embedding, the binary watermark is scanned to one-dimension sequence and later inputted into the (3, 1, 2) convolutional encoder and (3, 1) repetition encoder frame by frame, which will improve the error correcting capability of decoder. The output code sequence is scanned to some matrixes as the new watermark messages. The watermarking is selected in low frequency band of the Discrete Wavelet Transform (DWT) and therefore it can resist the destruction of image processing. Experimental results are presented to demonstrate that the robustness of a watermark with mixed ECC is much higher than the traditional one just with repetition coding while suffering JPEG lossy compression, salt and pepper noise and center cutting processing.
Multivariate Extension Principle and Algebraic Operations of Intuitionistic Fuzzy Sets
Yonghong Shen,Wei Chen
Journal of Applied Mathematics , 2012, DOI: 10.1155/2012/845090
Abstract: This paper mainly focuses on multivariate extension of the extension principle of IFSs. Based on the Cartesian product over IFSs, the multivariate extension principle of IFSs is established. Furthermore, three kinds of representation of this principle are provided. Finally, a general framework of the algebraic operation between IFSs is given by using the multivariate extension principle.
On Fuzzy Modular Spaces
Yonghong Shen,Wei Chen
Journal of Applied Mathematics , 2013, DOI: 10.1155/2013/576237
Abstract:
Iterative Algorithm for Approximating Solutions of Maximal Monotone Operators in Hilbert Spaces
Yonghong Yao,Rudong Chen
Fixed Point Theory and Applications , 2007, DOI: 10.1155/2007/32870
Abstract: We first introduce and analyze an algorithm of approximating solutions of maximal monotone operators in Hilbert spaces. Using this result, we consider the convex minimization problem of finding a minimizer of a proper lower-semicontinuous convex function and the variational problem of finding a solution of a variational inequality.
Iterative Algorithm for Approximating Solutions of Maximal Monotone Operators in Hilbert Spaces
Yao Yonghong,Chen Rudong
Fixed Point Theory and Applications , 2007,
Abstract: We first introduce and analyze an algorithm of approximating solutions of maximal monotone operators in Hilbert spaces. Using this result, we consider the convex minimization problem of finding a minimizer of a proper lower-semicontinuous convex function and the variational problem of finding a solution of a variational inequality.
Progress of High Voltage Trenched and Implanted 4H-SiC Vertical JFET  [PDF]
Gang Chen, Song Bai, Yonghong Tao, Yun Li
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B243
Abstract:

A silicon carbide (SiC) vertical channel junction field effect transistor (VJFET) was fabricated based on in-house SiC epitaxial wafer with trenched and implanted method. Its forward drain current is in excess of 3.12 A (170 W/cm2) with a current gain of ID/IG = 19746 at gate bias VG = 3 V and drain bias VD = 5.5 V. The SiC VJFET device’s related specific on-resistance 54 mΩ·cm2. The BV gain is 250 V with Vg from -10 V to -4 V and is 350 V with Vg from -4 V to -2 V. Self-aligned floating guard rings provide edge termination that blocks 3180V at a gate bias of ?14 V and a drain-current density of 1.53 mA/cm2.

A New Branch of the Pure Algebra: BCL-Algebras  [PDF]
Yonghong Liu
Advances in Pure Mathematics (APM) , 2011, DOI: 10.4236/apm.2011.15054
Abstract: The BCK/BCI/BCH-algebras finds general algebra system than Boolean algebras system. This paper presents a novel class of algebras of type (2, 0) called BCL-algebras. We found the BCL-algebras to be more extensive class than BCK/BCI/BCH-algebras in the abstract algebra. The BCL-algebras as a class of logical algebras are the algebraic formulations of the set difference together with its properties in set theory and the propositional calculus in logical systems. It is important that the BCL-algebras play an independent role in the axiom algebra system.
Special Lattice of Rough Algebras  [PDF]
Yonghong Liu
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.212215
Abstract: This paper deals with the study of the special lattices of rough algebras. We discussed the basic properties such as the rough distributive lattice; the rough modular lattice and the rough semi-modular lattice etc., some results of lattice are generalized in this paper. The modular lattice of rough algebraic structure can provide academic base and proofs to analyze the coverage question and the reduction question in information system.
On BCL+-Algebras  [PDF]
Yonghong Liu
Advances in Pure Mathematics (APM) , 2012, DOI: 10.4236/apm.2012.21012
Abstract: This paper presents the BCL+-algebras, which is derived the fundamental properties. Results are generalized with version of BCL-algebras [5], using some unusual for a binary relation * and a constant 1 (one) in a non-empty set X, one may take different axiom systems for BCL+-algebras.
Improve Results for Set Identities  [PDF]
Yonghong Liu
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.54065
Abstract:

In this work, we presented a new law which was based on the well-known duality property for the set identities. We introduced the diagrams that could be applied to the proof for the set identities. Some prime examples were also provided to illustrate the proposed law.

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