Capability of Enterprise and Patterns of Technology Convergence in Firms

Fengxian YANG 한국유통과학회 2018 KODISA ICBE (International Conference on Business Vol.2018 No.-

Technology convergence has been one means of technological innovation, which integrates similar or different technology fields to create new technology in the same industry or between industries. Technology convergence can be operated in different ways, including technology trade, technological alliance, mergers and acquisitions, which are the patterns of technology convergence. Because, single company can not possess all diverse technologies and resources innovation needs, it’s necessary to obtain them from outside through market or cooperation approach. Technology convergence is essentially a means of technological innovation. The choice among different technology convergence patterns is affected by resources and capability that company has. Enterprise capability refers to the power in company and the ability to build relationship and manage innovation resources. Technology trade, technological alliance, mergers and acquisitions are three different patterns to practice convergence. This article adopts empirical research method. Firstly, bring up research hypotheses based on literature review. Secondly, design and distribute questionnaires to collect data. Finally, one way- ANOVA is used to process data analysis and hypotheses test. The results indicate that capability of enterprise have significant influence on the choice between different patterns for company, although the degree of influence each are not identical.

Preparation and characterization of L-phenylalanine-derivatized β-cyclodextrin-bonded silica and its application on chiral separation of alanine acid racemates

Fengxian Qiu,Kaichen He,Jiao Qin,Jie Yan,Dongya Yang 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.11

A chiral adsorption material, L-phenylalanine-derivatized β-cyclodextrin-bonded silica (L-Phe-CD/SiO2),was prepared and characterized by Fourier transform infrared (FT-IR), elemental analysis, field emission scanning electron microscope (FESEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) measurements. Langmuir and Freundlich isotherm models were employed to simulate the equilibrium data. The results showed that the equilibrium data were well represented by Langmuir isotherm model. Experimental data were analyzed using pseudofirst order and pseudo-second order kinetic models and the obtained results indicated that kinetics followed a pseudosecond order equation. The static adsorption experiments indicated that L-Phe-CD/SiO2 had significantly higher adsorption capacity for L-alanine (L-Ala) compared with D-alanine (D-Ala); and the selectivity coefficient is 2.53. The result shows that the prepared L-Phe-CD/SiO2 could be applied to chiral separation of the racemic alanine acid solution.

Image 3d Adaptive Algorithm Based on Graph Cut

Fengxian Tang,Yunfeng Yang 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.8

As a key step in the visual inspection, image to appear particularly important. Compared with the traditional algorithm, graph cut algorithm overall high precision and faster convergence speed in discontinuous area. Based on adaptive algorithm on the basis of in-depth study, this paper proposes a three-dimensional adaptation algorithm based on graph cut theory in order to realize the image matching. Experimental results show that this algorithm can well meet the requirements of high precision and high real time capability, solve the problems such as large amount of calculation in the traditional algorithm.

Direct simulation of inhalable particle motion and collision in a standing wave field

Fengxian Fan,Xufeng Yang,Chang Nyung Kim 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.6

Motion of inhalable particles (PM10) under the effect of acoustic standing wave was numerically studied, and the inter-particle collision rate was investigated based on the direct simulation Monte Carlo (DSMC) method. The results show that the particles convergence rapidly, generating two particle number concentration peaks in a wavelength range along the wave propagation direction. Considering the inter-particle collision, it is found that when the particle size and number concentration keep constant, the collision rate first increases and then decreases with the increase of the frequency. Hence there is an optimal frequency that corresponds to the highest collision rate. As the sound intensity level increases, the collision rate increases monotonically. In cases with the same acoustic wave, the collision rate increases with the particle number concentration. The particle size is also an important factor that strongly affects the collision rate. The large inhalable particles collide more intensively than the small ones.

Production of biodiesel from soybean oil catalyzed by attapulgite loaded with C4H5O6KNa catalyst

Fengxian Qiu,Bin Ye,Yihuai Li,Chuanjia Sun,Zhenyu Zhao,Teng Ma,Dongya Yang 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.7

Biodiesel is a green, safe, renewable alternative fuel, which is of great significance to solving the problem of energy shortage and environmental pollution. A series of solid base catalysts were prepared with the support of attapulgite (ATP), the load of C4H5O6KNa by impregnation method, and were used to catalyze transesterification of soybean oil with methanol to biodiesel. The activities of prepared catalysts were investigated compared to pure ATP. The optimal conditions for the catalyst preparation were investigated: molar ratio of Na : ATP was 1.7 : 1 and calcination temperature was 400 oC. The prepared catalysts were characterized by several techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, N2 adsorption-desorption measurements,X-ray diffraction and the Hammett indicator method. The prepared solid base catalyst can be separated from reaction system effectively and easily. The effects of the molar ratio of methanol to oil, reaction temperature and amount of catalyst on the biodiesel yield were investigated. The experimental results showed that a 22 : 1 molar ratio of methanol to oil, 10.0% of catalyst amount, 65 oC of reaction temperature and 3.0 h of reaction time gave the best results. The catalyst has longer lifetime and maintained sustained activity after being used for five cycles.

Numerical study on heterogeneous behavior of fine particle growth

FAN Fengxian,YANG Linjun,Yuan Zhulin,Yan Jinpei,Jo Young Min 한국입자에어로졸학회 2009 Particle and Aerosol Research Vol.5 No.4

PM2.5 is one of critical air pollutants due to its high absorbability of heavy metallic fumes, PAH and bacillary micro organisms. Such a fine particulate matter is often formed through various nucleation processes including condensation. This study attempts to find the nucleation behaviors of PM2.5 arisen from coal power stations using a classical heterogeneous Fletcher’s theory. The numerical simulation by C-language could approximate the nucleation process of PM2.5 from water vapor, of which approach revealed the required energy for embryo formation and embryo size and nucleation rate. As a result of the calculation, it was found that wetting agents could affect the particle nucleation in vapor condensation. In particular, critical contact angle relates closely with the vapor saturation. Particle condensation could be reduced by lowering the angles. The wetting agents aid to decrease the contact angle and surface tensions, thereby may contribute to save the formation energy. Key words : Particle nucleation, Fletcher’s theory, Particle wettability, Numerical simulation

Network Intrusion Detection Based on Stochastic Neural Networks Method

Yunfeng Yang,Fengxian Tang 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.8

With the rapid development of the Internet, especially the development of mobile Internet, network size and network infrastructure changes, especially the more random access node to detect network attacks challenges traditional detection algorithm using neural networks, so that the calculated volume increased dramatically, and will detection accuracy is not high, for this problem, we use the stochastic process theory hidden Markov chain transformation neural network, so that the convergence of a substantial decline, while improving network attack detection accuracy degree.

A facile hydrothermal synthesis, adsorption kinetics and isotherms to Congo Red azo-dye from aqueous solution of NiO/graphene nanosheets adsorbent

Xinshan Rong,Fengxian Qiu,Jiao Qin,Hao Zhao,Jie Yan,Dongya Yang 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.26 No.-

A series of NiO/graphene nanosheets adsorbents (NGNS) were synthesized by a facile hydrothermal method, and characterized by UV–vis, XRD, TG, TEM, HRTEM, Raman, SAED and XPS methods. The NGNS was applied to deal with wastewater solution containing Congo Red (CR); and adsorption efficiency attained 99.56% at optimum condition. The adsorption kinetic and isotherm of adsorbent toward CR were investigated. The results indicated that pseudo second-order kinetic model and the equilibrium data were well fitted by Redlich–Peterson model. The adsorbent can be separated from system effectively and easily. The prepared adsorbent has potential application for the wastewater treatment containing CR azo-dye.

Fabrication of hydrophobic and oleophilic polyurethane foam sponge modified with hydrophobic Al2O3 for oil/water separation

Liying Kong,Yang Li,Fengxian Qiu,Tao Zhang,Qing Guo,Xiaoying Zhang,Dongya Yang,Jicheng Xu,Mengwei Xue 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.58 No.-

In current work, hydrophobic and oleophilic polyurethane (Al2O3/PUF) foam sponge was prepared by foaming technology. The material was characterized by XRD, TEM, BET, SEM and water contact angles (CA). The Al2O3/PUF was applied to removal of oil or organic solvent from oil/water system. Water contact angle of Al2O3/PUF could exceed 140°. The absorption capacity of Al2O3/PUF could be obtained 37 g/g and found to be reusable up to 10 cycles while maintaining its high absorption capacity. The result indicated that prepared foam sponge has good potential application in oil–water separation.

Removal of malachite green from the contaminated water using a water-soluble melamine/maleic anhydride sorbent

Xinshan Rong,Fengxian Qiu,Jiao Qin,Jie Yan,Hao Zhao,Dongya Yang 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5

A novel water-soluble adsorbent (S-Me/MA) was prepared from melamine and maleic anhydride by two steps. The structure of material was characterized by FT-IR spectroscopy, SEM, and 1H NMR. The S-Me/MA was applied to deal with wastewater solution containing malachite green (MG). The influences of adsorbent dose, temperature, pH and contact time were investigated. At the same time, the adsorption kinetic and isotherm of S-Me/MA toward malachite green were investigated. The results indicated that the adsorption of malachite green was in line with pseudo-second order kinetics equation. Langmuir isotherm equation can be a fine description of the removal process.