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Search Results: 1 - 10 of 36671 matches for " Song Gao "
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Effect of High-Energy Ball Milling on the Magnetic Properties of NiZn Ferrite Ceramics Synthesized by Spark Plasma Sintering  [PDF]
Shang Gao, Shenhua Song, Qingguo Song
Journal of Materials Science and Chemical Engineering (MSCE) , 2015, DOI: 10.4236/msce.2015.38008
Abstract: High-density fine-grained Ni0.5Zn0.5Fe2O4 ferrite ceramics were synthesized by spark plasma sintering (SPS) in conjunction with high energy ball milling. The precursor powders were milled for 20 h, 40 h, and 60 h, respectively, and the milled powders were all sintered for 5 min at 900°C. All the samples exhibit a single spinel phase. With increasing of the ball milling time, the relative density of the samples increases (up to 97.7%), however, the grain size decreases (down to ~200 nm). At room temperature, the sample from the 40 h-milled powder has the best combination of saturation magnetization and coercivity (83 emu/g and 15 Oe). These outstanding magnetic properties may be associated with high density and uniform microstructure created by SPS on the basis of fine precursor powders produced by high-energy ball milling.
Towards a Frontier of Spatial Scientometric Studies
Song Gao
Computer Science , 2014,
Abstract: The research field of spatial scientometrics is dedicated to measuring and analyzing science with spatial components (e.g., location, place, mapping). Because of the dynamic nature of this field, researchers from multidisciplinary domains constantly contribute qualitative, quantitative and computational approaches and technologies into scientometric analysis. This article aims to giving a brief overview about this field by analyzing the publications in (spatial) scientometrics collected from the Scopus database and introduces recent frontier researches which integrate advanced spatial analysis and geovisualization with Semantic Web technologies.
Technology Transferring Performance of Chinese Universities: Insights from Patent Licensing Data  [PDF]
Xiaopei Gao, Wei Song, Xiaobao Peng, Xiaoyan Song
Advances in Applied Sociology (AASoci) , 2014, DOI: 10.4236/aasoci.2014.412032
Abstract: This paper had collected the patent licensing documents of all Chinese universities and made a comprehensive study on licensing performance. With a whole set of data from SIPO, the exact licensing frequency number and licensing propensity number of Chinese universities had been obtained for the first time. On average, 16.03 patents (6%) per university had been licensed out to the industry, which is much lower than expectations. The frequency of licensing, propensity of licensing, number of partners (licensees), number of patent stocks, local-transfer ratio and the distribution of licensing frequency in terms of university-firm distance had been obtained in details. Five hypotheses had been made to discover the variances in university licensing performance. With the ANOVA technique, five hypotheses had been confirmed within the dataset, which had revealed a significant effect of patent stocks, local economic performance, central government support, existence of TTO and local government administration on university licensing performance.
Mapping and Evaluating Regional University-Industry Knowledge Flow through Patent Licensing  [PDF]
Xiaopei Gao, Yuming Chen, Wei Song, Xiaobao Peng, Xiaoyan Song
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.31001
Abstract: Different regions had various kinds of academic resources and industries competitors. The knowledge and innovation output generated by researchers in academy had been transferred into industries through patent licensing. Using the patent licensing document analyzing method and the mapping technique, the academic-industry knowledge flowing patterns of different regions in China had been discovered and visualized in maps. The regional performance of academic-industry knowledge transfer was rather mixed and unbalanced. Based on the licensing performance data, this paper had also generated a 4 × 4 block matrix as evaluation tool and ranked 28 Chinese regions into 8 levels according to their academic licensing performance. Further suggestions and advice had been given for regions in different levels.
Regional University-Industry Knowledge Flow: A Study of Chinese Academic Patent Licensing Data  [PDF]
Xiaopei Gao, Yuming Chen, Wei Song, Xiaobao Peng, Xiaoyan Song
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.32009
Abstract: Knowledge and technology transferring between universities and industries had been an important research focus of innovation management. Bibliometric research on the university-industry knowledge transferring had always used patent collaboration and citation data as indicators. However, patent licensing data were more representative and could target the knowledge transferring directions. This paper had gone through the data of Chinese academic-industry patent licensing and focused on the variances in regional level and geographic distance. Using patent licensing document analyzing method, the academic-industry knowledge flowing patterns had been discovered. Results showed that localization effects had been existed in those Chinese regions and the engagement of knowledge transferring was severely unbalanced.
National Innovation Demonstration Zones Leading China’s Regional Development  [PDF]
Xiaopei Gao, Wei Song, Xiaobao Peng
Modern Economy (ME) , 2015, DOI: 10.4236/me.2015.610102
Abstract: This paper had studied “3 + 1” National Innovation Demonstration Zones (NIDZ) in China, which located in Beijing, Wuhan, Shanghai and Anhui province. There were national level instructions for innovation demonstration zones. These 4 regions would benefit from the specific policy approved by the Chinese government and the whole nation depended on them to improve creative S & T level in the future from “Made in China” to “Created in China”. This paper had compared different aspects among these 4 innovation zones. The “1” Anhui Hefei-Wuhu-Bengbu area (HWB) would benefit from experience made by the “3” earlier innovation zones.
On the Oscillation of Second-Order Nonlinear Neutral Delay Dynamic Equations on Time Scales  [PDF]
Quanxin Zhang, Xia Song, Li Gao
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.46112
Abstract: Based on Riccati transformation and the inequality technique, we establish some new sufficient conditions for oscillation of the second-order neutral delay dynamic equations on time scales. Our results not only extend and improve some known theorems, but also unify the oscillation of the second-order nonlinear delay differential equation and the second-order nonlinear delay difference equation on time scales. At the end of this paper, we give an example to illustrate the main results.
Existence of solutions for nonlocal p-Laplacian thermistor problems on time scales
Wenjing Song and Wenjie Gao
Boundary Value Problems , 2013, DOI: 10.1186/1687-2770-2013-1
Abstract: In this paper, a nonlocal initial value problem to a p-Laplacian equation on time scales is studied. The existence of solutions for such a problem is obtained by using the topological degree method.
Roles of Modern Information Technology in Graduate Training
Ruixian Li,Song Gao
International Education Studies , 2009, DOI: 10.5539/ies.v2n2p63
Abstract: Introduction of information technology into the education field has greatly enriched teaching content and forms, and facilitated transformation of teaching mode, teaching approaches and training concepts. Especially for training of graduates, its introduction seems extraordinarily prominent. In this paper, the authors will analyze and discuss positive roles of information technology in graduate training.
Periodic solutions for p-Laplacian functional differential equations with two deviating arguments
Changxiu Song,Xuejun Gao
Electronic Journal of Differential Equations , 2011,
Abstract: Using the theory of coincidence degree, we prove the existence of periodic solutions for the p-Laplacian functional differential equations with deviating arguments.
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