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The Optimization Algorithm and Applied in Soil Fertility Evaluation Based on Data Mining Li Ma , Guifen Chen, College of Information and Technology Science, Jilin Agricultural University,Chang Chun, Jilin,China Mary19801976@sohu.com Keywords: rough set; decision tree; clustering；data mining; soil evaluation; productivity grade Abstract.
Spatial database includes five aspects these are profile and physical chemical properties, site conditions, weather factors, soil nutrients, soil management, including plot latitude and longitude, land area, soil moisture, administrative, light radiation, annual rainfall, soil drought resistance, soil erosion, soil texture, groundwater depth, irrigation, crop rotation suitability, terrain position, soil parent materials, humus layer thickness, salinity, soil ph values, the effective copper, an effective iron, slowly available potassium, available potassium, effective manganese, total nitrogen, available phosphorus, organic matter, cation, effective zinc and level total of 27 properties, 3153 polygon data.
Acknowledgements This work was financially supported by the development of science and technology plan projects of Jilin province (NO. 201101114), Jilin provincial projects(NO.201248),The word bank project(No. 2011-Z20), Hall of Jilin province science and technology science and technology support program(20110237, 20110237,20120802), Science and technology research project of Jilin province department of education(No. 2013-68) References [1] Xue Zhengpin, Deng Hua, Yang Weixing et al.
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Transactions of the ASME, Journal of Manufacturing Science and Engineering 126 (2004), pp. 459-466 [4] T.
International Journal of Machining and Machinability of Materials 4 (2008), pp. 377-392 [6] T.
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Transactions of the ASME, Journal of Manufacturing Science and Engineering 124 (2002), pp.10-17 [13] M.
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The Fiberboard of Hot Pressing Process Optimization and Combination Performance Characterization Minghui Guo 1,a,Jianpeng Hu1,b 1Key Lab. of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University ,Harbin150040,China agmh1964@126.com,bjianpeng0101@126.com Keywords:ammonium lignosulfonate/urea; hot-pressing process; characterization of performance; FTIR; XRD; ESEM.
Abstract.To pack a certain quality ratio ammonium lignosulfonate / urea as a filler into the natural wood fiber, Using flat pressure process fiberboard materials, Optimize the hot pressing technique that the filler is 20% (The quality ratio of lignosulfonate/ urea is 5: 3), slab moisture content is 13%, hot-pressing temperature is 190℃; hot-pressing time is 7 minutes, hot-pressing pressure is 2MPa and 1% paraffin emulsion.
Experimental Materials.The appearance of ammonium lignosulfonate is generally brown tilting power has good water solubility and surface activity, and the dry powder with a small amount of water has a strong adhesion.
Pukis, “Composition board binding material,”Patent, US:6291558, September 2001
Wu, “Modified lignosulfonate as adhesive,” Journal of Applied Polymer Science, vol.52, pp:437-443, 1994

Authors and some previous researches have reported the cutting characteristics of several kinds of graphite materials.
Masuda et al. [8] observed that a crack was produced and extended along the cutting direction, and then some workpiece materials were crashed into chips in the turning process of sintered graphite.
Hu: Chinese Journal of Mechanical Engineering Vol. 20(2007), p. 27-31 [2] L.
Wang, Z.Qin: Materials and Manufacturing Processes 24(2009), p. 1365-1372 [6] L.
Wang, Z.Qin: Key Engineering Materials Vol.257-258(2004), p. 858-863 [7] M.

Materials and methods Research area The research area is located at the barren slopes of arid valley along the upper reaches of Minjiang River, which lies in three counties: Wenchuan, Lixian and Maoxian.
Thank the Science and Technology Department of Aba Teachers College for their support and help.
Species diversity and spatial distribution of legumes in the dry valley of Minjiang River, SW China, Journal of Mountain Science, 2010, 28(1):76-84
Distribution and area investigation of the arid valley in Sichuan Province, Journal of Sichuan Forestry Science and Technology, 2009, 30(4):82-85
Quantitative Ecology, Beijing, Science Press, (2003)267-303

Qin: submitted to Journal of Key Engineering Materials (2010) [2] S.Z.
Ding: Journal of Chinese Information Processing, Vol. 22 (2008), No. 1, p.22-28 [5] B.
Pan: Journal of Computer Science, Vol. 34 (2007), No. 4, p. 210-212, 221 [7] J.S.
Lin: Journal of Computer Science, Vol. 34 (2007), No. 4, p. 213-216 [8] L.
Yang: Journal of Computer Science, Vol. 36 (2009), No. 7, p. 202-203, 210 [9] H.

Acknowledgment Funds: National Science Funding, China, No. 51278371, No.51208111 and Science Funding, Fujian Province, No. 2013J05071.
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Journal of Constructional Steel Research, ASCE, 2007, 63(5): 599–611
Journal of Constructional Steel Research, ASCE, 2009, 65(3): 709-722

During the production processes, multiples materials can be applied which makes it easy to manufacture new products with minimum amount of waste and lower materials costs [25].
With BDA, AM manufacturers could better predict the amounts of materials/resources they need and schedule shipments accordingly.
World Academy of Science, Engineering and Technology, International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering, 11, ((2017), 2476-2485
Applied Mechanics and Materials, Vol. 606, (2014): 87-291
American Journal of Engineering and Applied Sciences, 11,3 (2018), 1114 - 1124

Experimental Two different titanium sponge powders were used to sinter porous materials.
Both porous materials start with a high climbing rate around 10 mm/s at the beginning.
The reason can be explained by the microstructure of both materials.
Also, the use for other sponge materials will be addressed.
Chen, Preparation of porous titanium materials by powder sintering process and use of space holder technique, Journal of Iron and Steel Research, International 24 (2017) 97-102

It is the wall materials that make many murals of Song, Liao and Jin Dynasty preserved to this day in Shanxi.
Journal of Shanxi Educational College, 2001.2
Beijing Science Press
Science and Technology of Ancient Murals in Shanxi - Topic Studies of Science and Technology in Art [J].
Science Technology and Dialectics, 2002.6