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System Dynamics Mechanism Analyses on Building Materials Enterprise Factoring Risk Guoping Cheng, Di Tang School of Management,Wuhan University of Technology, Wuhan, P.R.China guopingcheng@tom.com, lx_zr@163.com, 461829699@qq.com Key words：Building materials enterprise, Factoring risk, System dynamics, Endogenous factors Abstract.
Now, more and more building materials enterprise has carried out factoring bussiness.
Main Unstable Factors in Building Materials Enterprise Factoring Business Particularity of domestic factoring business positioning itself.
Building Materials Enterprise Factoring Business Risk Endogenous Factors of Nonlinear Function Analysis The concept of Nonlinear is relative to the linear character.
[2] Yongqiang Zhou,etc, submitted to Northwest agriculture and forestry university of science and technology journals, In Chinese (2004)

Building Materials Utilization. 
The sludge contains silicon, aluminum, iron, calcium, inorganic and many building materials commonly ingredients similar, can be used as an alternative raw material manufacture of construction materials. 
Sludge Materials technology.
Ding: submitted to Journal of Fujian agricultural science and technology (2005) [9] X.Q.
He: submitted to Journal of Environmental science (2004) [11] S.S.

Large deformation and discontinuous yield analysis of rotating disks by abaqus softwares Hu Shaowei1,a 1Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute, Nanjing 210024 ahushaowei@nhri.cn Keywords: Rotating disk, Large deformation analysis, ABAQUS Software, discontinuous yield of material.
but the stress-strain curve of material is in Fig.5.
[J].International Journal of Mechanical Sciences 1992;34(2):133}8
International Journal of Mechanical Sciences 1983;25(1)
[J].International Journal of Mechanical Sciences 1998;40(10).

Hexagonal ferrites: A review of the synthesis, properties and applications of hexaferrite ceramics, Progress in Materials Science. 57(2012) 1191-1334
Electrical transport mechanism of aluminum substituted barium hexaferrite magnetic semiconductor, Journal of Materials Science: Materials in Electronics. 32(2021) 4110-4124
Low-temperature cofired Co/Zr-cosubstituted M-type barium ferrite, Journal of Electronic Materials. 46(2017) 1358-1362
Effect of microwave sintering on microstructural and magnetic properties of strontium hexaferrite using sol-gel technique, Journal of Materials Science: Materials in Electronics. 24(2013) 3881-3884
Phase evolution and temperature dependent magnetic properties of nanocrystalline barium hexaferrite, Journal of Materials Science: Materials in Electronics. 30(2019) 13647-13654

While the realistic reasons are rely on the science and technology themselves and the management mechanism.
Only in this way, the useful materials can be recycled from the iron tailings gradually, reaching the whole utilization.
Journal of auspicious hensejz engineering college study, 2010, 27 (4): p.22 - 23
Journal of modern mining, 2012, 521 (9):p. 1-3
Journal of materials and metallurgy, 2004, 3 (4): p. 244-245.

(1) , is respectively Heat Conductivity Coefficient of two composition materials; , is respectively volume ratio of above two composition materials.
Journal of Tongji University (Natural Science). 2006,34(11):1451~1456 (In Chinese) [2] Wanyang GAO ; Kexu HU; Zhoudao LU.
Journal of Tong ji University(Natural Science).2009,37(5):575~582 (In Chinese) [5] Fuxiong Wan, Wenzhong Zheng.
Advanced Materials Research. 2011,255-260:574~579 [6] Wenzhong Zheng, Fuxiong Wan, Shiguang Li.
ASTM Journal of Materials. 1970, 5(1):47~74 [10] Wenzhong Zheng; Fuxiong Wan; Shiguang Li.

Machining of work-piece as in the form of erosion of materials is based on the Faraday’s law of electrolysis.
Optimization of Electrochemical Machining Process Parameters Using Taguchi Approach.International Journal of Engineering Science and Technology 5, 999-1006
BabuRao.Microstructure and mechanical properties of aluminum–fly ash nano composites made by ultrasonic method.journal of Materials and Design 35 (2012) 55–65
International Journal of Engineering Research and Applications (IJERA) 2, 192-197
Influence of Input Parameters on Characteristics of Electro Chemical Machining Process.International Journal of Applied Science and Engineering 11, 13-24

MMCs are one of the groups of such type of materials.
References [1] Hao Wu, Qiang Li; Application of mechanochemical synthesis of advanced materials; Journal of Advanced Ceramics, 2012, vol.1, Issue 2, pp. 130–137
[3] Seung J.Hwang, Jin-hyung Lee; Mechanochemical synthesis of Cu-Al2O3 nanocomposites; Materials Science and Engineering A, 2005, vol. 405, pp. 140-146
Motta; In-situ formation of Cu–Al2O3 nano-scale composites by chemical routes and studies on their microstructures; Materials Science and Engineering A313, 2001, pp. 180–186
Zhang; Processing of Cu-Al2O3 metal matrix nanocomposite materials by using high energy ball milling; Materials Science and Engineering A286, 2000, 152-156

Acknowledgements The authors acknowledge the financial support of the National Nature Science Foundation of China in Major Project Program (No.50390061) and the Scientific Research Foundation of Henan Institute of Science and Technology for High Level Scholar.
Jin: Chinese Journal of Mechanical Engineering, Vol.39 (2003) No.10, pp.100-105.
Kang and et al: Materials Science Forum, Vol.471-472 (2004), pp.26-31
Wood and et al: Journal of Electronic Materials, Vol.30 (2001) No.12, pp.1520-1526
Chang and et al: Journal of Tribology, Vol.126 (2004) No.1, pp.185-199.

Journal of Materials Processing Technology, 209(4), 1980-1987
Journal of Materials Processing Technology, 113(1-3), 373-377
International Journal of Mechanical Sciences, 39(5), 597-613 [8] Bhatnagar, N., Ramakrishnan, N., Naik, N.
Journal of Materials Processing Technology, 89-90, 273-278
Gelin, A finite element based identification method for complex material behaviours, Computational Materials Science, 21, (2001) 57-68