Li F.,Putian University
Journal of Computational and Theoretical Nanoscience | Year: 2016
The trade of cultural products is a new industry arising from the big background of economic globalization; it is of strong permeability, wide cross-industry, and relatively intensive knowledge. It stands at the top of the commodity industry chain, is gradually recognized and cherished by people. Its development is also one of the obvious signs to measure the regional competitiveness. In view of the corresponding evaluation index of the sales route of cultural products in financial and trade activities participation, the study carries out the comprehensive weighting, and optimizes the results of the weighting based on the variation coefficient method. The importance between the subjective weight and objective weight is verified according to the instance data and the operating income margin of cultural products is predicted. © Copyright 2016 American Scientific Publishers All rights reserved.
Chen Z.,Putian University
Cryptography and Communications | Year: 2017
We define a family of quaternary sequences over the residue class ring modulo 4 of length pq, a product of two distinct odd primes, using the generalized cyclotomic classes modulo pq and calculate the discrete Fourier transform (DFT) of the sequences. The DFT helps us to determine the exact values of linear complexity and the trace representation of the sequences. © 2016, Springer Science+Business Media New York.
Huang J.,Fuzhou University |
Huang J.,Putian University |
Ho W.,The Hong Kong Institute of Education |
Wang X.,Fuzhou University
Chemical Communications | Year: 2014
Covalent carbon nitride polymers were applied as metal-free robust catalysts for the inactivation of Escherichia coli K-12 (E. coli), a common Gram-negative bacterium, under visible light illumination. The results demonstrated that the creation of antibacterial function on the surface of conjugated polymers has now become possible. © 2014 the Partner Organisations.
Huang J.,Putian University |
Antonietti M.,Max Planck Institute of Colloids and Interfaces |
Liu J.,Max Planck Institute of Colloids and Interfaces
Journal of Materials Chemistry A | Year: 2014
Inspired by the photosynthetic thylakoid membrane of chloroplasts, we present here the rational design of mesoporous structured colloids made up of graphitic carbon nitride nanosheets and demonstrate their application in photocatalytic NADH regeneration for sustainable enzymatic synthesis. This journal is © the Partner Organisations 2014.
Du X.,Northwest Normal University |
Chen Z.,Putian University
Information Sciences | Year: 2013
Let p be a prime with 6|(p - 1) and integer m ≥ 1. As a generalization of the Hall's sextic residue sequences, we introduce some families of generalized cyclotomic binary sequences over the residue class ring modulo pm by defining sextic generalized cyclotomic residue classes. We determine the values of the linear complexity, which are large enough to resist security attacks using the Berlekamp-Massey algorithm. We also investigate the trace function representation for the resulting sequences when m = 2. © 2012 Elsevier Inc. All rights reserved.
Chen G.L.,Putian University
Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology | Year: 2011
To investigate the correlation between the level of serum VEGF and bFGF with metastasis and re- currence of osteosarcoma. 52 patients with osteosarcoma and 60 healthy people as control group were selected. The serum contents of VEGF and bFGF were determined with ELISA before and after operation. The serum contents of VEGF and bFGF before operation were significantly higher than that in control group ( P < 0.01). The serum contents of VEGF and bFGF after operation descreased significantly but were significantly higher than that in control group(P<0. 01). The serum contents of VEGF and bFGF before operation were positively related to the size of primarily tumor, Enneking type and tumor differentiation(P<0.05). The serum contents of VEGF and bFGF before and after operation were different significantly between recurrence and metastasis positive group with recurrence and metastasis negative group ( P < 0. 01). The Cox proportional hazards model showed that the serum contents of VEGF and bFGF before and after operation were an independent factor of the recurrence and metastasis for osteosar- coma patients after operative ( P <0. 01). The serum contents of VEGF and bFGF before and after operation can offer valuable assessments in evaluation of progression and metastasis prognosis.
Chen Z.X.,Putian University
Science China Information Sciences | Year: 2014
We describe the trace representations of two families of binary sequences derived from the Fermat quotients modulo an odd prime p (one is the binary threshold sequences and the other is the Legendre Fermat quotient sequences) by determining the defining pairs of all binary characteristic sequences of cosets, which coincide with the sets of pre-images modulo p2 of each fixed value of Fermat quotients. From the defining pairs, we can obtain an earlier result of linear complexity for the binary threshold sequences and a new result of linear complexity for the Legendre Fermat quotient sequences under the assumption of 2p−1 ≢ 1 mod p2. © 2014, Science China Press and Springer-Verlag Berlin Heidelberg.
Wu C.-H.,Putian University
Proceedings - 4th International Conference on Genetic and Evolutionary Computing, ICGEC 2010 | Year: 2010
Certificateless Public Key Cryptography (CL-PKC) as a new paradigm was introduced by Al-Riyami and Paterson in Asiacrypt 2003, which removes the use of certificate to ensure the authenticity of the user's public key in the traditional certificate-based public key cryptography and also overcomes the key escrow problem in the identity-based public key cryptography. However, it does suffer from an attack called Denial-of-Decryption (DOD) attack as its nature is similar to the well known Denial-of-Service(DOS)attack. In ASIACCS 2007, K. Liu, M. Au and W. Susilo proposed a new paradigm called Self-Generated-Certificate Public Key Cryptography(SGC-PKC) that captures the DoD Attack. Moreover, they provided a generic construction of a self-generated-certificate public key encryption scheme in the standard model but without a self-generated-certificate public key signature scheme. In this paper, to the best of our knowledge, we give the first precise definition and security notions for Self-Generated- Certificate Digital Signature and then the first concrete signature scheme which is provably secure under the CDH assumption. © 2010 IEEE.
Huang L.-H.,Putian University
Guangzi Xuebao/Acta Photonica Sinica | Year: 2011
A novel algorithm for single image dehazing was proposed. Firstly, the color space is converted from RGB to HIS after the image normalization. The quadtree-segmentation is applied in hue component divided the image into elementary square units which had the same scene depth. The local airlight could be estimated from each square unit. To employ the characteristics of fog, the effects of fog on images are erased by using the optical model of foggy weather. Then the image of the restoration is obtained after the saturation component correction. The main advantage of this algorithm is reat time performance that is can be used in defogging both for color images and gray images. Compared with other algorithms, it is shown that this algorithm is able to restore foggy images effectively.
Xiao W.,Putian University
Advanced Materials Research | Year: 2013
LED chips positioning is a key process in chip quality classification. With the use of pattern-matching mechanism, we proposed a new method for high accuracy positioning system which can be used in detection, sorting and crystal binding machines. Firstly, we used the Otsu and morphological filtering algorithms to gather all kinds of LED chips image. The boundary characteristic points of image were then obtained to bring the feature vector to generate a pattern template. Similar characteristic points were then searched in the sample images to achieve accurate chip positioning. Finally, the Euclidean distance error between the template and target feature vector was compared. As the pattern template is only dependent on the boundaries and independent of the grayscale, the positioning robustness and accuracy can be drastically improved, achieving a positioning error of less than 1 μm and a positioning speed of over 574 grains/second. © (2013) Trans Tech Publications, Switzerland.