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School of Economics and Management , Nanjing University of Science and Technology.
School of Economics and Management , Nanjing University of Science and Technology.
References [1] Krugman P,Increasing returns and economic geography,J.Journal of Political Economy.99(1991)483-499
[3] Vernon Henderson, Medium Size Cities,J.Regional Science and Urban Economics.27(1990)583-612
China Soft Science,2003, pp.107-112

Materials and Methods The problem under study includes specific number of mixed-model assembly lines in a shop floor environment where different types of jobs can be processed and each line consist of manual workstations in which each assembly station capable of serving any task of any jobs.
Three objectives are considered in this problem which as follows: Ÿ Minimizing overall make-span Ÿ Line balancing Ÿ Minimizing variation of completion time A workstation in any line should be setup for the new materials requirement to be able to serve the new set of products.
Sayin, “Assembly line balancing in a mixed-model sequencing environment with synchronous transfers,” European Journal of Operational Research, vol. 149, no. 2, pp. 417-429, 2003
Masoud, “Genetic algorithms and simulated annealing for scheduling in agile manufacturing,” International Journal of Production Research, vol. 43, no. 14, pp. 3069-3085, 2005
Rees, “Assembly Line Balancing Using Genetic Algorithms with Heuristic-Generated Initial Populations and Multiple Evaluation Criteria*,” Decision Sciences, vol. 25, no. 4, pp. 581-606, 1994

Microporous and Mesoporous Materials, pg 134-140
Adsorption and Diffusion in Nanoporous Materials, CRC press, 1 edition
Chinese Journal of Chemical Engineering, pg 386-390
Adsorptive removal of carbon dioxide using polyethyleneimine-loaded mesoporous silica materials.
Tailored Porous Materials, J. of Chemical Material, pg 2633-2656

Peric [15] proposed a perturbation method for low rate sensitive materials.
In the present paper we refer to the class of material behaviour often denoted in the literature as rate-sensitive materials, see e.g.
Perzyna: The constitutive equations for rate sensitive materials, Quart.
De Angelis: Multifield potentials and derivation of extremum principles in rate plasticity, Materials Science Forum, Vol. 539-543 (2007), pp. 2625-2630
Cancellara: Implications due to different loading programs in inelastic materials, Advanced Materials Research, Vol. 422 (2012), pp. 726-733

Tatu, Optimal design of the solar tracker used for a photovoltaic string, Journal of Renewable and Sustainable Energy, vol. 5, nr. 2 (2013), pp. 023133 (1-16)
Alexandru, Optimal design of the mechanical device for a photovoltaic tracking mechanism, Applied Mechanics and Materials, vol. 186 (2012), pp. 114-123
Calabrò, Determining optimum tilt angles of photovoltaic panels at typical north-tropical latitudes, Journal of Renewable and Sustainable Energy, vol. 1, no. 3 (2009), pp. 033104 (1-6)
Alexandru, Software platform for analyzing and optimizing the mechanical systems, Proceedings of the 10th IFToMM International Symposium on Science of Mechanisms and Machines, Springer, pp. 665-677 (2009)
Ceccarelli, Challenges for mechanism design, Proceedings of the 10th IFToMM International Symposium on Science of Mechanisms and Machines, Springer, pp. 1-13 (2009)

Materials and Methods Nozzle flow model test system A nozzle flow model test system, which includes a computer, a PWM waveform generator and a liquid supply unit, is developed as shown in Fig. 1.
Acknowledgements The study is supported by China national science and technology project (2011BAD20B06), China Shaanxi province science and technology project (2011K02-05) and China national “948” project of the Ministry of Agriculture (2011-G32).
References [1]Hang Zhu, Yubin Lan, Wenfu Wu, et al., Development of a PWM Precision Spraying Controller for Unmanned Aerial Vehicles, Journal of Bionic Engineering 7 (2010) 276–283 [2]Li Li, Jianli Song, Xiongkui He, Design and Application of Crop Automatic Target Detection Device, Transactions of the Chinese Society for Agricultural Machinery, 41 (2010) 54-56.
Status Analysis of Precision Pesticide Application Techniques, Journal of Agricultural Mechanization Research 5(2010) 9-12.
[12]Zou Wei, Li Li, Wang Xiu, et al., Variable Pesticide Spraying System Based on PWM Speed Control, Journal of Agricultural Mechanization Research 2(2010) 163-166.

Experimental investigation on 7075 aluminium response during thixoextrusion Adriana Neag1,a, Veronique Favier2,b, Mariana Pop1,c, Regis Bigot3,d 1Technical University, Faculty of Materials Science and Engineering 400641 Cluj-Napoca, Romania 2Arts et Métiers ParisTech, PIMM UMR CNRS 8006, 75013 Paris, France 3Arts et Métiers ParisTech, LCFC, EA 4495, 57078 Metz Cedex 3, France aadriana.neag@ipm.utcluj.ro, bveronique.favier@ensam.eu, cmariana.pop@ipm.utcluj.ro, dregis.bigot@ensam.eu Keywords: 7075 aluminum alloy, semi-solid, microstructure, thixoextrusion.
Many materials were tested using both techniques.
Elias-Boyed, Thixotropic materials, European Patent No. 0305375 B1. (1992)
Kirkwood, Near net shaping by semi-solid metal processing, Materials and Design. 21 (2000) 387-394
Pop, Microstructure and flow behavior during backward extrusion of semi-solid 7075 aluminium alloy, submitted to Journal of Materials Processing Technology (2011).

Signals of acoustic issue represent acoustic waves which arise in lining because of violation of its continuity, motions of burden materials.
The required temperature is the temperature eutectic materials of melting and can be defined from the chart iron-carbon.
After each change of the furnace profile the amendments are entered into thermal properties of materials near erosion [5].
In such systems the thermal stream is determined by a difference of temperatures of the neighboring sensors and by thermal conductivities of refractory materials known in advance between them.
[9] Zhao Hong-bo, HuoShou-feng, Cheng Shu-sen, Study on the early warning mechanism for the security of blast furnace hearths, International Journal of Minerals, Metallurgy and Materials. 20 (2013) 345-353

The top of valence band and the bottom of conduction band locate the same point (G-point), which means that anatase TiO2 is an direct-gap material.
Zhang, Application of nanometer TiO2 photocatalytic technology in the treatment of industrial wastewater, Journal of Environment and Health 27 (2010) 1027-1029
Jian, First-principles study of the electronic structures and magnetic properties of 3d transition metal-dopedanatase TiO2, Journal of Physics: Condensed Matter 20 (2008) 125207-125212
Yin et al, Photocatalytic degradation of chloramine phosphorus with RE doped TiO2, Journal of Central South University 40 (2009) 139-144
Ohwaki, et al., Visible-light photocatalysis in nitrogen-doped titanium oxides, Science 293 (2001) 269-271.

Table1 Chuck and tool performance parameter Performance material elastic modulus[Gpa] Poisson ratio Density[] yield strength[MPa] Coefficient of friction chuck 40cr 210 0.28 7.8 785 0.2 tool Cemented carbide 640 0.22 15 5460 At present there is no effective way to calculate the value of critical oil pressure (one information [2] introduce the critical oil pressure about this series is 83MPa, the other information [3] introduce to 80 ~ 130MPa).
Acknowledgment The authors are grateful to Major national science and technology special projects for support of this project.
Shrink fit tool holder connection stiffness/damping modeling for frequency response prediction in milling, International Journal of Machine Tools & Manufacture 47 (2007) 1368–1380 [7] Jia Yue-mei, Zhao Qiou-xia, Zhao Guang-hui, Fluid mechanics.Beijing: National Defence Industry Press(2006,8)