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Hefei, China

Hefei Normal University is located in the capital city of Anhui Province——Hefei, birthplace of Bao Zheng and one of the four national science and education base cities. Founded in 1955, HNU is a full-time normal undergraduate university under the supervision of Anhui Province.HNU attaches great importance to undergraduate education. Presently, it has 12 departments, 4 public basic course departments, 25 undergraduate programs and 30 junior college programs. The student population totals about 12,600.With two campuses——Sanxiao Kou Campus and Jing Xiu Campus, HNU covers a total area of 603 Mu and the architecture area of schoolhouse reaches 285,000 square meters. The total instruments and equipments used in teaching and scientific research value more than 36 million RMB. HNU has established 13 comprehensive laboratories and 3 experimental center of public education——computer science, phonetic sound and teaching skill training. The library of HNU boasts a collection of 836,000 p-books, 41,000 e-books, 1419 foreign&domestic journals and 6 Chinese&English database.The number of full-time teachers in HNU is 462, including 31 professors, 86 associate professors and 65 doctors. 66.3% of them hold the degree of master or above. Of all the teachers, there is 1 distinguished visiting professor of WanJiang Scholars, 1 provincial distinguished teacher, 4 provincial academic leaders, 5 backbone teachers, 4 enjoyed special allowances from the State Council and Anhui Government, 4 hold the doctoral supervisor and 14 hold the master supervisor in some key universities.HNU has set up Teacher Education Research Center and Art of Chinese Poetry Research Center, as well as 8 research institutes on ancient books, fundamental math, coordination chemistry, etc. In the research field such as electromagnetic field&microwave technology, art of Chinese poetry, distance geometry and collation of ancient books, HNU enjoys comparative advantage in China. And some others are in leading position in Anhui, such as the research of coordination chemistry, optical information science&technology and history of foreign education. In the last three years, HNU assumed 172 scientific research programs of different levels and classes among which 5 are in the National Social and Natural Science Fund Program. The Academic Journal of Hefei Normal University is a core journal of CSSCI . High School Mathematics Teaching directed by the university is rated National Outstanding Scientific Journal by Publicity Department of the CPC Central Committee. Wikipedia.

Kai X.,Hefei University of Technology | Zhu S.,Hefei University of Technology | Tang Y.,Hefei University of Technology | Tang Y.,Hefei Normal University
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2013

In this paper, we construct families of nonbinary quantum codes from classical negacyclic codes. The BCH bound for negacyclic codes is applied to determine the dimension and distance of these quantum codes. The parameters of these quantum codes are good compared with the ones available in the literature. We also construct a family of quantum maximum-distance-separable codes with parameters [[q+1,q-2d+3,d]]q, where q≡1mod4 and 2≤d≤(q+3)/2. © 2013 American Physical Society.

Fang H.,Shanghai Second Polytechnic University | Yang H.-R.,Hefei Normal University
Zidonghua Xuebao/Acta Automatica Sinica | Year: 2011

Recently a family of iterative greedy algorithms have received extensive application in compressed sensing (CS) due to their fast reconstruction and low reconstruction complexity. In this paper, the basic theory of CS is first introduced and then we put emphasis on the main greedy algorithms for reconstruction, which include MP, OMP, IBOOMP, StOMP, SP, ROMP, CoSaMP and so on and provide their mathematical frameworks, respectively. Next, we classify all the algorithms according to the strategy of element selection and the update of the residual error. Under the condition of restricted isometry constant, further discussion on the performance of reconstruction algorithms such as running time, reconstruction stability and so on is presented. Last, the reconstruction results from simulated experiments further show the performance of all algorithms. And from those results we also acquire the relationship among the performance of the algorithms, the sparsity of signals to be reconstructed and the number of measurements, which lays a good basis for proposing new and better algorithms. Copyright © 2011 Acta Automatica Sinica. All rights reserved.

Yang D.,Hefei Normal University
International Research in Geographical and Environmental Education | Year: 2011

As a result of China's geography education reform, the Geography Standards for Senior Secondary Schools was released in 2003. Being the first kind over the past seven decades, the Standards put forward some changes for senior geography education. For the textbooks' crucial role in Chinese educational system, the changes in geographical education are often assumed and reflected explicitly and implicitly by the textbooks. This descriptive study primarily centres on the general picture of content changes and the implications of these changes from the old syllabus-based geography textbooks to the new standards-based ones by comparing the typical examples relating to the learning areas in physical, human and regional geography, activities and geographical enquiries. © 2011 Taylor & Francis.

Song M.,Anhui University of Finance and Economics | Song Y.,Hefei Normal University | An Q.,Anhui University of Science and Technology | Yu H.,Anhui University of Finance and Economics
Renewable and Sustainable Energy Reviews | Year: 2013

Improving environmental efficiency has been regarded as an objective requirement and an inevitable path to build a resource-saving and environment-friendly society in China. The slacks-based measurement (SBM) model with undesirable output is applied to measure the environmental efficiency of provinces in China from 1998 to 2009. Then, by the Tobit model, we can empirically test the impact of influencing factors on the environmental efficiency. It demonstrates the low value of the environmental efficiency of each province with an essentially descending trend on the whole and the distinct differences between the environmental efficiency of those provinces. Besides, GDP per capita dependent on foreign capital and trade, environmental awareness and population density have obviously positive impacts on environmental efficiency. And the proportion of the secondary industry in the GDP shows a significantly negative impact on the environmental efficiency. © 2012 Elsevier Ltd.

Zou P.,South China Normal University | Zhang Z.-M.,South China Normal University | Song W.,Hefei Normal University
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2015

The direct state measurement (DSM) based on the weak measurement has the advantage of simplicity, versatility, and directness. However, the weak measurement will introduce an unavoidable error in the reconstructed quantum state. We modify the DSM by replacing the weak coupling between the system and the pointer by a strong one, and present two procedures for measuring quantum states, one of which can give the wave function or the density matrix directly. We can also measure the Dirac distribution of a discrete system directly. Furthermore, we propose quantum circuits for realizing these procedures, and the main body of the circuits consists of Toffoli gates. By numerical simulation, we find that our scheme can eliminate the biased error effectively. ©2015 American Physical Society.

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