Guiyang, China

Time filter

Source Type

Yang L.T.,Guiyang University
Advanced Materials Research | Year: 2014

In this paper, a hybrid quasi-micro-pyramid structure is fabricated via nanosecond pulse laser micro-processing, which demonstrates a 15% drop in average reflectance as compared to the uniform quasi-micro-pyramid structures. The influences of laser fluence, pulse number, and designed pitch are also studied experimentally and systematically. The results show that reflection increases with the pattern pitch, decreases with pulse number, and a minimum in reflection is reached at a laser fluence of 4.83 J/cm2. The method here demonstrated provides an alternative and low-cost solution for broadband anti-reflection by hybrid structures with normal aspect ratio rather than uniform structures with high aspect ratio. Higher antireflection performance can be expected by optimizing the laser processing parameters. © (2014) Trans Tech Publications, Switzerland.

Ou Yang B.C.,Guiyang University
Applied Mechanics and Materials | Year: 2014

With the rapid development of logistics enterprises, tradition logistics sorting has been unable to meet the needs of the development of express logistics. Combining with the RFID technology, the paper proposes a new way of logistics sorting and data routing. By increasing the RFID tag and the AWB in the express waybill will improve efficiency. Using Cluster head selection principle and clustering algorithm of LEACH (adaptive clustering hierarchy). Comparison with original system, verified the practicability of RFID technology and data routing algorithm in the sorting system and easy to use. © (2014) Trans Tech Publications, Switzerland.

Zhang M.,Guiyang University
Proceedings - 2010 3rd IEEE International Conference on Computer Science and Information Technology, ICCSIT 2010 | Year: 2010

This paper investigates the maximal achievable multi-rate throughput problem of a multicast session at the presence of network coding. Deviating from previous works which focus on single-rate network coding, our work takes the heterogeneity of sinks into account and provides multiple data layers to address the problem. Firstly formulated is the maximal achievable throughput problem with the assumption that the data layers are independent and layer rates are static. It is proved that the problem in this case is, unfortunately, Non-deterministic Polynomial-time(NP)-hard. In addition, also extend our formulation to the problems with dependent layers and dynamic layers. © 2010 IEEE.

Shen Y.,Guiyang University
Industrial, Mechanical and Manufacturing Science - Proceedings of the 2014 International Conference on Industrial, Mechanical and Manufacturing Science, ICIMMS 2014 | Year: 2015

As the financial reform in China is moving forward, the competition in financial industry is becoming increasingly fierce. Business operators are faced with the problems on how to choose innovation strategies for financial products to pursue profit maximization. Based on the current development of financial industry in China, this study, according to the theory of finance and industrial economies, analyzed the problems of insufficient market segmentation and single service object in financial innovation and proposed some effective advice, conducting diversified businesses based on the market environment. © 2015 Taylor & Francis Group, London.

Huang Z.,Guiyang University
Proceedings - 2014 5th International Conference on Intelligent Systems Design and Engineering Applications, ISDEA 2014 | Year: 2014

From the analysis of the behavior of farmers, proposing the comprehensive production capacity of understanding, and building a comprehensive production capability evaluation index system. In the central eight provinces in 2012 data as the sample, using correspondence analysis and factor analysis, discussing the different area production characteristics, overall household farmers' production capacity and the difference between the degree and specific performance. Conclusion: the commercialization of agricultural products and the area of cultivated land comprehensive production to the central provinces affected households households, comprehensive production capacity in Heilongjiang province in the first row, but the environmental benefit is low, farmers in Shanxi province production ability and profit ability needs to be improved. © 2014 IEEE.

Jin Y.,Guiyang University
Annals of Physics | Year: 2016

The dynamics of the quantum Fisher information of the parameters of the initial atomic state is studied, in the framework of open quantum systems, for a pair of static two-level atoms coupled to a bath of fluctuating vacuum scalar fields. Our results show that the correlations between the two atoms as well as the precision limit in quantum metrology are determined by the separation between the two atoms. Remarkably, when the separation between the two atoms approaches zero, the quantum Fisher information, thus the precision limit of the estimation of the parameters of the initial atomic state will be survived from the vacuum fluctuations after long time evolution. © 2016 Elsevier Inc.

Chen P.B.,Guiyang University
Zhongguo zhen jiu = Chinese acupuncture & moxibustion | Year: 2012

To probe into the best acupoint-prescription for the simple acupoint catgut embedding therapy in treatment of bronchial asthma. Forty-eight Wistar rats were randomly divided into six groups: the simple acupoint catgut embedding at Feishu (BL 13), Danzhong (CV 17) and Shenshu (BL 23) group (group A), the simple acupoint catgut embedding at Shenshu (BL 23) group (group B), the simple acupoint catgut embedding at Feishu (BL 13) and Danzhong (CV 17) group (group C), Dexamethasone group (group D), model group (group E), and control group (group F), 8 rats in each group. The asthmatic models were established by Ovalbumin (OVA) except group F. Rats in group A, B and C were treated with catgut embedding at the corresponding acupoints from the first experimental day. In group E and D, Dexamethasone and sterile were intraperitoneal injected respectively from the 15th experimental day, once a day for 2 weeks consistantly. No interventions were added on group F. For the six groups, the symptoms of asthmatic attack were observed and the pathologic changes of lung tissue were examined. (1) The times of sneeze and rhinocnesmus scratching nose in group E were increased significantly compared with those in group F (both P < 0.01), but there was no significant difference between group D and F (both P > 0.05). As compared with that in group E, except the times of sneeze in group C, the times mentioned above were decreased significantly in all the treatment groups (all P < 0.01). There was no significant difference between group A and D (both P > 0.05), but the times mentioned above were increased significantly in group B and C as compared with that in group A (all P < 0.01). (2) The symptoms of asthmatic attack and the pathologic changes of airway tissue were all alleviated in group A, B and C, but a better amelioration was observed in group A, with no mucus epistom in the bronchial lumen and few infiltrations of inflammatory cells around the bronchi. The improvement of the simple acupoint catgut embedding at "Feishu" (BL 13), "Danzhong" (CV 17)and "Shenshu" (BL 23) on the airway inflammation in asthmatic rats is better than that of catgut embedding at "Feishu" (BL 13) and "Danzhong" (CV 17) or at "Shenshu" (BL 23) only.

Yang Y.,Guiyang University
International Journal of Advancements in Computing Technology | Year: 2012

In this paper, we propose a rough set, ant colony optimization and genetic algorithm based framework (RCGF) for spam filtering. The proposed method is divided into three stages. In the first stage, we propose a filtering method based on ant colony system and rough set for initial feature select. In the second stage, genetic algorithm (GA) is used to achieve the feature selection task. In the last stage, a classifier is used to finish the classification task. The comparison details show that ACO-Selection has a notable ability to generate a gene subset of smallest size with salient features while yielding significant classification accuracy. The comparative results tested by ACO-Selection adopting different classifiers are also given. The proposed method is demonstrated to be a promising and effective tool for selecting features and mining high-dimension data.

Yan L.,Guiyang University
IET Seminar Digest | Year: 2014

Multicast congestion control is essential to avoid congestion collapse and ensure fair competition in bandwidth with unicast. This paper presents a classification on existing multicast congestion control schemes. A main contribution in this paper is that we characterize multicast congestion control by a parameters tuple {traffic regulation, group management, data layering and coding, router function}. Meanwhile, the advantages and disadvantages are also investigated in the selection of different parameter values, e.g. whether rate-based or window-based, receiver- driven or sender-driven.

Du J.,Guiyang University
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2015

ZnII and CdII coordination polymers with dicarboxylate and imidazole-containing ligands, namely, [Cd (2,3-PDC)(L)]n (1) and {[Zn(3,4-PDC) (L)0.5]·H2O}n (2), [2,3-H2PDC = 2,3-pyridine dicarboxylate, 3,4-H2PDC = 3,4-pyridine dicarboxylate, and L = 1,4-bis(2-methylimidazol-3-ium-1-yl)biphenyl], were prepared and characterized by elemental analysis, IR spectroscopy, and X-ray diffraction. Complex 1 shows a three-dimensional (3D) structure with threefold interpenetrating diamond topology. Complex 2 features a 3D framework with twofold interpenetrating dmc topology. Moreover, the luminescent properties of complexes 1 and 2 were also investigated. Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Loading Guiyang University collaborators
Loading Guiyang University collaborators