Yantai Nanshan University

www.nanshan.edu.cn
Yantai, China

Time filter

Source Type

Lv H.,Yantai Nanshan University | Liu J.,Yantai Nanshan University
International Journal of Simulation: Systems, Science and Technology | Year: 2016

We consider a rough set PNN Gaussian block expectation-implanting sorting recommendation algorithm for multi label webpage. This is aimed to solve the problems of imprecise information and new information in multi-label recommendation algorithm caused by unsatisfactory effects of traditional precise algorithm. Firstly, specific to uncertain information, rough set theory is used to improve the model of traditional PNN and makes it suitable to process the uncertainty of information. Secondly, to solve the problem of fixed PNN in: i) processing multi-label webpage recommendation, ii) bad coverage, iii) large structural redundancy, and iv) new label not being identified rapidly, we use Gaussian block to: i) implant expectation sorting mode, ii) establish the operations of combine, add and delete probabilistic function blocks, iii) improve prediction accuracy and reduce computation complexity and iv) effectively resolve real-time problem of new information prediction. Finally, our comparison experiments in the example of Yahoo multi-label data set show the algorithm above has higher computation accuracy and efficiency. © 2016, UK Simulation Society. All rights reserved.


Li X.,Yantai Nanshan University | Zhu X.,Yantai Nanshan University
RISTI - Revista Iberica de Sistemas e Tecnologias de Informacao | Year: 2016

This paper constructs the business model of internet travel service and analyzes its evolution law. And the Ctrip.com is taken as an example to validate the proposed business model. The research results show that the evaluation model elements of Internet travel service business model are composed of value group, product and service, resource allocation and profit pattern, on the basis of this, the internal and external resources of enterprise are integrated, ultimately realize the development strategy of the online tourism profit. The evolution cycle of the business model of online travel enterprises is the repeat alternately of the construction process and structure process of business model. The structure process of the business model includes the emergence of new business profit pattern, the competition between old and new business model and the disintegration of the old business model. Ctrip.com is taken as an example to analyze its business model from the above four aspects. In the development process of Ctrip.com, the operation revenue source gradually shows a trend of diversified development, since 2010, the company takes the initiative to change, increases exploitation in two new directions, namely tourism vacation and business travel management, so as to realize sustainable development of enterprises. The research conclusion can be used as a theoretical reference for the development of online tourism enterprises. © AISTI 2016.


Yao J.,Yantai Nanshan University | Xu B.,North China University of Water Conservancy and Electric Power | Wang Y.,Henan University
Chinese Journal of Chemistry | Year: 2012

The authors predict that the magnetic moment of the scandium clusters can not be efficiently enhanced with the encapsulation of Fe atom, which is different from previous works with Fe atom doped in B n, Si n, and Ge n clusters. It was found that starting from n=6, the growth patterns of the ground state structures of the Sc nFe clusters are dominated by the octahedron structures with Fe atom falling into the center of the host framework. The calculated results manifest that doping of the Fe atom contributes to strengthening the stabilities of the scandium framework. Maximum peaks are observed for clusters of n=3, 6 and 8 on the size dependence of the second-order energy differences, implying that these clusters possess relatively higher stability. The HOMO-LUMO gap of the Sc nFe clusters exhibits an oscillational odd-even character with the local peaks of n=4, 6 and 8. Especially, there is the largest oscillation of the gap with n=4 and 5. Additionally, the doped Fe atom exhibits the antiferromagnetic alignment at n=4, 5, 7 and 9. Also, the quench of the magnetic moments as n=6, 8 and 10 may be ascribed to the model of close-shell electrons. Copyright © 2012 SIOC, CAS, Shanghai & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Qu G.,Yantai Nanshan University | Deng S.,Shanghai Institute of Technology
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2016

A low-complexity soft-decision decoding algorithm based on the re-encoding technique was proposed for the BCH(15, 11) code in BeiDou satellite navigation system. Several candidate information sequences were constructed by the soft-decision vector and then re-encoded in the algorithm if the error in the hard-decision result was detected. The correlation between each codeword and the soft-decision vector was calculated, and the codeword with the maximum correlation value was selected as decoding output. Simulation results show that the presented algorithm outperforms traditional hard-decision decoding at the expense of moderate complexity increase. Moreover, the storage of error-correction ROM signal is avoided. Hence, the presented algorithm is a good choice for decoding in a practical navigation receiver. © 2016, The Editorial Board of Journal of System Simulation. All right reserved.


Yao J.-G.,Yantai Nanshan University | Tian Z.-Y.,Yantai Nanshan University | Wang Y.-X.,Henan University
Molecular Physics | Year: 2011

Mn-doped scandium clusters have been systematically investigated using the density-functional approach. It was found that, starting from N = 6, the growth patterns of the ground-state structures of MnScN clusters are dominated by octahedral structures with the Mn atom occupying the center of the host framework. The calculated results show that doping with Mn contributes to improving the stability of the scandium framework. The octahedral structure with the Mn atom occupying the center from N ≥ 6 has a relatively larger HOMO-LUMO gap compared with small-sized MnScN clusters. Also, the largest oscillation of the energy gap occurs at N = 5 and 6. Moreover, the local peaks of N = 3, 5 and 8 of the energy gap are in agreement with the second-order energy differences. The encapsulated Mn atom, coupled with the antiferromagnetic alignment with N ≥ 6, reduces the magnetism of the host ScN clusters in most cases. This is different from Mn doped into Bn, Gen, and Bin clusters. The MnSc6 cluster not only has the smallest energy gap (about 0.01 eV), but also the largest magnetic moment of 5 μB of all of the MnScN clusters. © 2011 Taylor & Francis.


Wang D.-H.,Ludong University | Tang T.-T.,Yantai Nanshan University
Communications in Theoretical Physics | Year: 2015

This paper investigates the flux distributions of the electron photo-detached from H- ion localized in a gradient electric field. In contrast with the photodetachment in the uniform electric field [Phys. Rev. A 40 (1989) 4983], where only two electron trajectories interfere at each given point on a detector, for the photodetachment in a gradient electric field, the electrons waves can travel along multiple paths from the negative ion to a given point on the detector plane, which makes the electron flux distributions on the detector plane become much complex. Using the semi-classical theory, we put forward a formula for calculating the electron flux. Our calculation results suggest that the electron flux distributions on a given detector plane is not only related to the propagation time of the detached electron, but also related to the detached electron's energy. With the increase of the detached electron's energy, the oscillating region in the electron flux distributions becomes enlarged and the oscillating structure in the flux distributions becomes much more complicated. This study will guide future experiment research on the photodetachment microscopy of the negative ions in the presence of non-uniform external fields. © 2015 Chinese Physical Society and IOP Publishing Ltd.


Zhu Z.,Yantai Nanshan University
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2015

Alcohol-based coating was developed with brown alumina powder as refractory aggregate, phenolic resin as composite binder, the lithium base bentonite as suspending agent. Through the process testing and practical production verification, the coating developed was suitable for large-scale production of high manganese steel. © 2015, Journal Office of Special Casting and Nonferrous Alloys. All right reserved.


Qin J.,Yantai Nanshan University | Wei C.G.,Yantai Nanshan University
Advanced Materials Research | Year: 2014

There is a universal coupling in process control system, especially with the development of science and technology, industry system has became more and more big, the control process is more complicated, the variables which need to solve are also gradually increased. Therefore between the variables in the associated process produce coupling. In order to solve the coupling problems, we introduced PI self- adjusting fuzzy control model in the link of decoupling, and designed the model and the algorithm of decoupling with decoupling controller. The experiment showed that, after the introduction of PI algorithm, the time when the system reaches a steady is greatly reduced, saving time and cost. Also there is no coupling between the two signals, which shows that PI algorithm successfully reaches the decoupling in the process control. © (2014) Trans Tech Publications, Switzerland.


Tang L.,Yantai Nanshan University
Open Cybernetics and Systemics Journal | Year: 2015

With the rapid development of science and technology, the process of economic globalization has been accelerated, intellectual property competition heats up, which becomes the key to the development of enterprise management, competition and restricting factors in the modern economic environment. Enterprise must take both with international laws and regulations system, and can effectively protect the interests of the market of intellectual property management strategy for long-term development. Through summing up chinese enterprise intellectual property management present situation, in accordance with the national “standard of enterprise intellectual property management” of the specific requirements, this paper builds the whole process of enterprise operation and management model of intellectual property standardization management, to establish a scientific management processes and system for enterprise management framework to provide the reference. © Tang Libo; Licensee Bentham Open.


Li J.H.,Yantai Nanshan University
Proceedings of the International Conference on Management, Information and Educational Engineering, MIEE 2014 | Year: 2015

Based on the analysis of the characteristics of fresh vegetables, this article set up the third-party logistics service provider selection index system, and it constructed the selection model based on fuzzy comprehensive evaluation. At the end of the article, the example analysis is introduced, to demonstrate the effectiveness and practicability of the model. © 2015 Taylor & Francis Group, London.

Loading Yantai Nanshan University collaborators
Loading Yantai Nanshan University collaborators