Mudanjiang Normal College
Mudanjiang Normal College
Zhang B.,Mudanjiang Normal College |
Zhang L.,Mudanjiang Normal College
Faguang Xuebao/Chinese Journal of Luminescence | Year: 2017
Three-level system-based rate equation and power transfer equation were used to solve the temperature dependent emission spectral properties for 3.3 nm PbSe quantum dot doped liquid core fiber under different fiber length and doping concentration, considering the effect of the temperature on the parameters.It is found that the spectral peak position shifts to the red in a similar red shift rate with the temperature increasing, in the case of different fiber length. For the longer fiber, the spectral peak intensity decreases in a larger decline rate. In the case of different doping concentration, with the temperature increasing, the spectral peak position shifts to the red in a similar red shift rate, and the spectral peak intensity decreases in a similar decline rate. © 2017, Science Press. All right reserved.
Wang Y.,MuDanjiang Normal College |
Zhang G.,MuDanjiang Normal College
Revista de la Facultad de Ingenieria | Year: 2017
Data mining technology can help researchers to conduct scientific analysis of data, which can help us to explore the relationship between the various factors from the massive data. Data warehouse and data mining technology as effective information processing and data analysis tools, can make the deep analysis of the data, which promotes the improvement of PE teaching quality and form a healthy sports mode. In this paper, the authors analyse the data mining application in autonomous learning and badminton skill teaching. Also, in badminton technology teaching, the use of autonomous learning teaching mode is conducive foster the students' subject consciousness, cultivate students to participate in the teaching activities, more conducive to the understanding and knowledge of badminton skill. © 2017 Universidad Central de Venezuela.
Zhang G.,Mudanjiang Normal University |
Ge J.,Mudanjiang Normal College
Revista de la Facultad de Ingenieria | Year: 2017
In this paper, we design and implement the home-school-community synergy online education platform based on the mobile information technology. To enhance feasibility of the traditional online education services, we propose the P2P based mode. As a major impact on the network technology, the P2P and cloud computing has its own characteristics. Firstly, we introduce the mobile information technology to serve as basis. We propose that fourth generation mobile communication that can be in the different fixed and the wireless platforms and across different frequency band for the wireless service in the network. Later, we analyze the cross-platform communication of information, robust software development and the enhanced revised online education platform, respectively. The revised paradigm for development of mobilized multi-platform is proposed. In the final part, we show the user interface and systematic description of the system that feasibility is verified. Conclusion and future research orientation are summarized at the end.
Zhu Y.-R.,Anhui University of Technology |
Yin L.-C.,Mudanjiang Normal College |
Yi T.-F.,Anhui University of Technology |
Liu H.,Harbin Institute of Technology |
And 2 more authors.
Journal of Alloys and Compounds | Year: 2013
Submicron-sized Li4Ti5O12 anode was synthesized through a two-step solid-state reaction. The relationship between the structural properties, electrochemical performance discharged to 0 V and lithium-ion intercalation kinetics was discussed using the experiments as well as the first-principles calculations. Structural analyses reveal that Li 4Ti5O12 synthesized by the two-step solid-state method has high phase purity. Scanning electron microscopy (SEM) shows that Li4Ti5O12 has a homogeneous size distribution in the range of 0.4-0.6 μm. The initial discharge capacity of Li 4Ti5O12 is 234.6 mA h g-1 at 0.5 C rate between 0 and 2.5 V, and it is close to the theoretical capacity value. The high structure stability of Li4Ti5O12 is related to the strong covalent bonding characteristic between Ti and O according to the first-principles calculation. Electrochemical impedance spectroscopy (EIS) indicates that the charge transfer resistance of the Li4Ti 5O12/Li cell evidently decreases with increasing of the temperature, and the apparent activation energies of Li4Ti 5O12 electrode on the lithium diffusion process and the charge transfer are calculated to be 19.05 and 22.48 kJ mol-1, respectively. © 2012 Elsevier B.V. All rights reserved.
Sun F.,Heilongjiang University |
Sun F.,Mudanjiang Normal College |
Li L.,Heilongjiang University |
Liu P.,Harbin Normal University |
Lian Y.,Heilongjiang University
Electroanalysis | Year: 2011
Novel copper (Cu) film composed of pillar-like structure was synthesized on indium-doped tin oxide (ITO) substrate by electrodeposition in acetate bath with proline as additive for the first time and used to construct nonenzymatic glucose sensor. When applied to detect glucose, such prepared electrode showed low operating potential (0.4V), high sensitivity (699.4499μA mM-1 cm-2), and fast response time (<3s) compared with other Cu-based electrodes. In addition, the prepared electrode also offered good anti-interference ability to ascorbic acid, uric acid and acetaminophen. Present study provides new insights into the control of Cu film morphology for sensor fabrication. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Cai X.,Mudanjiang Normal College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011
In the centrosymmetric binuclear title compound, [Ni2(C 15H8O7)2(H2O) 6], the NiII ion is in a distorted octahedral coordination geometry with O6 donors, three from three water molecules, the others from three carboxylate groups of two ligands. Extensive O-H⋯ ⋯ ⋯O hydrogen bonding connects the molecules into a three-dimensional supramolecular structure.
Xu H.,Mudanjiang Normal College
Applied Mechanics and Materials | Year: 2011
In this paper, a novel class of Cohen-Grossberg neural networks with inverse Hö lder neuron activation functions is presented. By employing the Brouwer degree properties and linear matrix inequality techniques, the existence and uniqueness of equilibrium point for such Cohen-Grossberg neural networks are investigated. By constructing appropriate Lyapunov functions and using Lyapunov diagonally stable matrices, a sufficient condition which is used to checked the global exponential stability of a unique equilibrium point is established. A numerical example is given to demonstrate the effectiveness of the theoretical results. © (2011) Trans Tech Publications, Switzerland.
Wang H.,Mudanjiang Normal College
Advanced Materials Research | Year: 2011
This paper discusses the development of "Double-qualified" teachers, and put forward several proposals to draw on the existing experience. They are the study in the German dual system, the teachers' access system, the training mode, the assessment mechanism, and the circumstances to construct double-qualified teaching staff and so on. This work has important significance to cultivate high-quality teacher and meet the urgent need of higher vocational schools. © (2011) Trans Tech Publications, Switzerland.
Feng X.,Mudanjiang Normal College
Applied Mechanics and Materials | Year: 2013
The paper is mainly analyzed machine translation system as effective platform using computer and this is a process that a kind of natural source language changes into another source language of natural target. Machine translation system is obviously application effect with increasing demand in today economic and social globalization. The paper is divided into two categories machine translation system, based on regulation and corpus and machine translation system and is summarized and generalized five kind of application type, which machine translation system can better serve the economic and social development. © (2013) Trans Tech Publications Switzerland.
Zheng Y.,Mudanjiang Normal college
Applied Mechanics and Materials | Year: 2012
In this paper, a new dopant of P3N5 (phosphorus nitride) was doped into the diamond growth cell to grow diamond crystals by temperature gradient growth method (TGM) under high pressure and high temperature (HPHT). The experiments were performed at a fixed pressure of about 6.0 GPa and temperatures of 1600-1650 K. The gained diamond crystals were characterized by infrared (IR) absorption spectroscopy, micro-Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. IR measurements demonstrated that, nitrogen atom was indeed doped into diamond crystals, and the diamond crystals with perfect shape containing nitrogen concentration ranging from 461 atomic parts per million (ppm) to 2186 atomic ppm were successfully synthesized. Nitrogen atoms present in diamond crystal were predominantly in isolated form accompanied by a small amount of nitrogen pairs. Micro-Raman spectra implied that crystalline quality deteriorated with nitrogen concentration gradually increased in diamond-growing environment. The XPS spectra revealed that only a few of phosphorus impurities about tens of ppm level were incorporated into a diamond crystal which was heavily doped with P3N5. This study will promote the application of doping diamonds in micro-electronics field and other fields. © (2012) Trans Tech Publications, Switzerland.