Entity

Time filter

Source Type


Chai Y.Q.,Langfang Teachers University
Material Science and Environmental Engineering - Proceedings of the 3rd annual 2015 International Conference on Material Science and Environmental Engineering, ICMSEE 2015 | Year: 2016

This study utilizes accurate first principle method to conduct a comparative study on the electronic structure of NbB and ZrB under pressure. According to the results, product compression effect on the density of states near the Fermi level and volume compression effect on the energy band structure show differences exists between the two borides. The study shall be able to provide a significant theoretical reference for further experimental research to understand superconducting materials under high pressure. © 2016 Taylor and Francis Group, London. Source


Chai Y.-Q.,Langfang Teachers University
Advanced Materials Research | Year: 2014

This study utilizes accurate first principle method to conduct a comparative study on he electronic structure of multiple borides. State density of the borides is also summarized. It is found that lanthanum boride has special electronic structure characteristics. Therefore, it is presumed that there is high superconducting transition temperature (Tc) in lanthanum boride. This study is able to provide asignificant theoretical reference for further experimental research. © (2014) Trans Tech Publications, Switzerland. Source


Fan L.,Langfang Teachers University
WIT Transactions on Information and Communication Technologies | Year: 2014

Leslie population model has widely been used in calculating the number of people and analyzing the age structure, but no one considered the stability ofLeslie model. The results demonstrated that the end result changed dramatically when the elements in Leslie matrix have slight variations. It is difficult to give a precise value of elements in Leslie matrix, because the elements were rates of birth or death, so the result which was given by Leslie population model is inconsistent to the actual when it was a long-term projection. © 2014 WIT Press. Source


Wang X.F.,Langfang Teachers University
Applied Mechanics and Materials | Year: 2014

From the starting of understanding the concept and characteristics of the Internet of Things, I propose the concept of the intelligent digital campus according to the research status grasping of the Internet of Things. The intelligent digital campus based on the Internet of Things can achieve automatic recognition, library borrowing management, multimedia classroom and laboratory management and campus consumption management. It provides more efficient services for teachers and students work, studying and daily life. © (2014) Trans Tech Publications, Switzerland. Source


Wang X.F.,Langfang Teachers University
Applied Mechanics and Materials | Year: 2014

Based on the theory of cloud computing, this paper uses Hadoop distributed computing framework and the MapReduce programming model, designs and implements a campus cloud computing system for processing huge amounts of data. The system uses a three-layer architecture, has the flexibility to expand the scale, low development cost and ease of operation, reduces the difficulty of parallel programming and has the ability to efficiently handle massive data analysis and processing. © (2014) Trans Tech Publications, Switzerland. Source

Discover hidden collaborations