Jiangsu City Vocation College

Nanjing, China

Jiangsu City Vocation College

Nanjing, China
SEARCH FILTERS
Time filter
Source Type

Cheng H.,Nanjing University | Cheng H.,Jiangsu City Vocation College | Rong C.,University of Stavanger | Tan Z.,University of Aalborg | Zeng Q.,Nanjing University
Chinese Journal of Electronics | Year: 2012

Cloud computing will be a main information infrastructure in the future; it consists of many large datacenters which are usually geographically distributed and heterogeneous. How to design a secure data access for cloud computing platform is a big challenge. In this paper, we propose a secure data access scheme based on identity-based encryption and biometric authentication for cloud computing. Firstly, we describe the security concern of cloud computing and then propose an integrated data access scheme for cloud computing, the procedure of the proposed scheme include parameter setup, key distribution, feature template creation, cloud data processing and secure data access control. Finally, we compare the proposed scheme with other schemes through comprehensive analysis and simulation. The results show that the proposed data access scheme is feasible and secure for cloud computing.


Zou X.,Zhejiang Institute of Communications | Liu W.,Jiangsu City Vocation College | Feng G.,Nanjing University of Posts and Telecommunications
Science in China, Series F: Information Sciences | Year: 2010

Bit-interleaved coded modulation with iterative decoding (BICM-ID) is a bandwidth efficient transmission scheme which is well suitable for next-generation mobile communications. The interleaver design is critical to the high performance of BICM-ID. In this paper we investigate the application of the chaos theory to the interleaver design to further improve the performance of BICM-ID. A new interleaving scheme based on the chaos theory is proposed. Compared with the random interleaver, the proposed approach has the advantages including lower system delay and higher transmission efficiency. Simulation results in both additive white Gaussian noise (AWGN) channel and Rayleigh fading channel are provided, which demonstrates that the new interleaver is better than the random interleaver and exhibits excellent performance when applied to the BICM-ID system. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.


Zou X.,Zhejiang University of Media and Communications | Liu W.A.,Jiangsu City Vocation College | Feng G.,Nanjing University of Posts and Telecommunications
Chinese Journal of Electronics | Year: 2010

Bit-Interleaved coded modulation with Iterative decoding (BICM-ID) is a bandwidth efficient transmission scheme which is suitable for next-generation wireless communication systems. In this paper we focused on the interleaver design based on the chaotic maps to further improve the performance of BICM-ID. We used the dispersion and correlation to analyze the performance of the interleavers. The chaotic interleaving schemes generated from the Logistic map, the Henon map and the Lozi map are provided which have better performance than the random interleaver when applied to BICM-ID. It shows that the inclusion of a chaotic vector increases the dispersion of the golden interleaver and improves the system performance. Simulation results in both Additive white Gaussian noise (AWGN) channel and Rayleigh fading channel are provided which demonstrate the effectiveness of the proposed approaches.


Cheng H.,Jiangsu City Vocation College | Yang H.,Jiangsu City Vocation College | Rong C.,University of Stavanger
2012 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2012 | Year: 2012

As an effective and popular method to solve big data storage, computation and processing, distributed system has been a widespread hot issue for these years. With the continuous development of modern computer, network and communication technology, distributed systems have also gained very huge development and have shown themselves some different forms in different times. Currently, there are some famous distributed system forms available for modern information processes and communication applications, such as web service, grid computing and cloud computing technology et al. In this paper, we mainly focus on studying the key issues of distributed system firstly, especially, for its beginning development phase, and then discuss the typical forms of the distributed system from its emergence, at the same time; we also show some important applications about up-to-date distributed system. Finally, we talk about the issues of challenges for up-to-date distributed system and the development trends of distributed system in the future. ©2012 IEEE.


Hu D.-H.,Jiangsu City Vocation College
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

In the title compound, [Pr(NO3)3(C10H 12N2O)2], the PrIII ion is ten-coordinated by two N and two O atoms from two bidentate 3-(dimethyl-amino)- 1-(2-pyrid-yl)prop-2-en-1-one ligands and by six O atoms from three nitrate anions in a distorted bicapped square-anti-prismatic geometry. An extensive three-dimensional network of weak inter-molecular C - H⋯O hydrogen bonds consolidates the crystal packing.


Wei C.,Jiangsu City Vocation College
Applied Mechanics and Materials | Year: 2012

This paper presents several novel schemes on product texture bionic design and applications. The paper is organized as follow: It starts on concept of bionics design, methods and models, analyzed the process of bionic design. Several modern texture bionic designs will be followed. With these designs product texture may enhance its weight feeling, enrich its expression as well as conveys language. The floor, leather products, and beverage packaging boxes are applications in texture bionic design. With texture bionic design, which states as natural biological form, directly impacts on people's vision, to give a more intuitive, intimate, beautiful feeling. It also plays a pivotal role to modern environmental protection. © (2012) Trans Tech Publications, Switzerland.


Cai J.,China Communications Construction Company Ltd. | Cai J.-F.,Jiangsu City Vocation College
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2011

In order to investigate the relation between the shear strength and the effective normal stress of soil under the same water content, according to the methods for unloading shear strength of soil, the variation rules of shear strength of the soil under loading and unloading conditions are analyzed considering the stress relation between over-consolidated soil and normally consolidated soil. Formulas for the two true strength parameters of the true strength theory based on the tests by Hvorslev are proposed. Finally, the formula of shear strength with the same structure in a real sense for over-consolidated soil, normally consolidated soil, and under-consolidated soil is deduced by solving the limit and derivation according to the Hvorslev's true strength theory for over-consolidated soil.


Hu D.,Jiangsu City Vocation College | Liu X.,Jiangsu City Vocation College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title compound, (C 10H 10N 3O 2S) 2[CdCl 4], the Cd II ion lies on a twofold axis and is coordinated by four chloride anions, with bond distances of 2.4787 (10) and 2.4410 (10) Å. A chain along the c axis is formed by C-H⋯N hydrogenbonding interactions and a weak π-π interaction is observed between the pyrimidine rings of two adjacent parallel chains [centroid-centroid distance = 3.722 (2) Å]. N-H⋯Cl, CN-H⋯Cl and N-H⋯O interactions also occur.


Liu X.,Jiangsu City Vocation College | Hu D.,Jiangsu City Vocation College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title compound, [Gd(NO 3) 3(C 10H 12N 2O) 2]·2C 2H 5OH, the Gd III ion and one nitrate anion are located on a twofold rotation axis. The Gd III ion is ten-coordinated by two N and two O atoms from two bidentate 3-(N,N-dimethyl-amino)-1-(2-pyrid-yl)prop-2-en-1-one) ligands and six O atoms from three nitrate anions in a distorted bicapped square-anti-prismatic geometry. In the crystal, the components are linked by O - H⋯O hydrogen bonds. The ethanol solvent mol-ecule is disordered over two positions in a ratio 0.615 (16):0.385 (16).


Liu X.,Jiangsu City Vocation College | Hu D.,Jiangsu City Vocation College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the crystal structure of the title compound, [Ag 3(C 9H 6N 3O 3S) 3(H 2O) 2] n , the molecules are linked into three-decked polymeric zigzag chains propagating in [100]. On the middle deck, the Ag atom is five-coordinated by three O atoms from three 4-(3-pyrid-yl)pyrimidine-2- sulfonate (L) ligands, one of which lies on a mirror plane with the sulfonate group disordered over two orientations in a 1:1 ratio, and two N atoms from two L ligands, which lie on the same mirror plane. On the upper and lower decks, the Ag atom is four-coordinated by an aqua ligand, one O and two N atoms from two L ligands with the pyridyl and pyrimidine rings twisted at 19.8 (2)°. In the polymeric chain, there are π-π interactions between six-membered rings of L ligands from different decks with centroid-centroid distances of 3.621 (7) and 3.721 (3) Å. In the crystal, inter-molecular O - H⋯O hydrogen bonds link further these three-decked chains into layers parallel to (010).

Loading Jiangsu City Vocation College collaborators
Loading Jiangsu City Vocation College collaborators