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There are seven challenges have been determined from previous study [11] namely public perception, tendering problems, designing, financial, human resources, productivity, material and technology.
Othman, Challenges of Mega Construction Projects in Developing Countries, Orgaization, Technology and Management in Construction Journal, DOI 10.5592/otmcj.2013.1.10, 2013
Sturup, Megaprojects and Governability, World Academy of Science, Engineering and Technology, 54, 2009
Procedia Social and Behavioral Science 00(2013)
Blackwell Science Ltd, August 2008

Application of Temperature Forecasting in Cupola Melting Process Based on BP Neural Network Xiaoyu Sun1,a, Jianxin Zhou2,b, Liang Sun3,c, Hong Wang4,d 1,2,3,4 State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, China axiaoyu.sun1991@foxmail.com, bzhoujianxin1975@163.com, csunliang19880319@163.com, dmicwanghong@hust.edu.cn Keywords: Cupola Melting, Temperature Forecasting, BP network model, Genetic Algorithm Abstract.
Acknowledgement This research was financially supported by Program for New Century Excellent Talents in University (No.NCET-09-0396), and State Major Science and Technology Special Project Foundation for High-end Numerical Machine and Basic Manufacturing Equipment (2012ZX04012-011).
Modeling and Control of Neural Network for Cupola [D].Taiyuan: Taiyuan University of Science and Technology, 2008
International Journal of Pattern Recognition and Artificial Intelligence, 1996, 10(6): 731-747.

Analysis of the Influence of Fillet Curves on Gear Bending Strength based on Space Contact Zhonghou Wang1,a, Ning Zhang2,b, Demin Dong3 and Xijiang Chen4 1College of Mechanical Engineering,University of Shanghai for Science and Technology, Shanghai,200093,China a wang_zhonghou18@163.com, bzhang_ning.0325@163.com Keywords: Involute helical gear, FEA, Fillet curve, Tooth dedendum tangent Abstract.
Two gear models with different fillet curves respectively The basic geometrical parameters of modified helical gear studied in this paper are: Z1=20, Z2=41, =25.4/12mm, =17.5°, X1=0.200mm,X2=0.455mm, , B1 =16.5mm, B2=18.5mm, and their characteristic parameters are: Material is Mild Steel, Elastic Modulus= 205 Gpa, Poisson’s Ratio=0.3 and Density=7800kg/m3.
Acknowledgments The authors would like to extend their sincere gratitude to the three Project Fund, that are The national natural science funds projects (51075279),Shanghai municipal education commission in key discipline construction projects(J50503)and Shanghai municipal education commission, scientific research innovation key projects (10ZZ92).
References [1] Li Zhang and Jun Wang: Mining machinery, Vol. 6(1997), p.45 (In Chinese) [2] Xuemei Caoand Jun Wang:Tooth root bending stress analysis of the transition curve,Machinery, Vol.4(2003),p.46 (In Chinese) [3] Dejun Ma: Journal of Tanks and armored cars and volume of the engine, Vol.1(1993),p.57(In Chinese) [4] Fenai Yang: FEA of helical gear contact stress based on the accurate models, Mechanical science and technology,Vol.3(2003),p.206 (In Chinese) [5] Zenghui Fan and Yongxi Zhao: Finite element analysis of the inclined gear contact, Mechanical drive, (2010),p.68 (In Chinese)

Analysis of Automatic Welding Finned Tube Hydraulic System Based on Automation Studio Yue Hua Suna ,Hong Tao Li, Chun Sheng Liu Department of Mechanical Engineering, Heilongjiang Institute of Science and Technology, No.1, Tangchang Street, Songbei District, Harbin, 150027, China asunyuehualyb@163.com Keywords: Automation Studio.
Host function Finned tube,which is a kind of resistance welding the fins (heat sink) on the isometric soldered together in new and efficient seamless heat exchanger, this exchanger endure high pressure, high thermal efficiency, compact and beautiful appearance.Finned tubes used in automatic welding machine automatic welding fins, and its action mainly by stepping on the material and pipe welding of two parts, one feeding the machine moves by step guide on the machine the size of the extension unit and push the slide(pull) acting hydraulic cylinder of the intermittent movement to achieve.Procedures by the hydraulic drive shown in Fig.1 [1,2].
Acknowledgements Science and Technology Research Project of Heilongjiang Province Office of Education (11533058); This project is one of the key projects for science and technology research of Ministry of Education(206045, YJSCX2005—190HLJ).
Chinese journal of construction machinery(In Chinese),2006(7),p.276 [4] Ani Lou.

Damage Analysis on a Frame Structure under Repeatedly Blasting Vibration Wenhui Tana, Miao Yub and Pengfei Zhang c School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, P.R.China awenhui.t@163.com, byumiao2007@163.com, cfeiyuanweining@163.com Keywords: Repeatedly Blasting Vibration; Frame Structure; Damage Abstract.
Fatigue damage is a fading process of the mechanical behavior of structural material.
Wang: Journal of Kunming University of Science and Technology Vol. 26(2001), p. 18 (in Chinese) [7] P.
Yu: Influence of Blasting Vibration on the Performance of a Frame Structure (Master Dissertation of University of Science and Technology Beijing.

Research on Fire Disaster Fire-fighting Simulation System of Large_Long Tunnel Shouqi Cao1, a, Yanling Han2,b 1College of Engineering Science & Technology, Shanghai Ocean University, Shanghai, China 2 College of Information, Shanghai Ocean University, Shanghai, China asqcao@shou.edu.cn, bylhan@shou.edu.cn Keywords: large-long tunnel; fire disaster; model drive; evaluation Abstract.
We use modeling, light, material, blanking and other technology of Open Inventor to achieve screen simulation of the tunnel.
The Random Input Model for Traffic Flow Simulation, Journal of South China University of Technology(Natural Science)[J], No. 11, 2001, pp. 92-94
Analysis of Highway Tunnel Fire Accidents, Hebei Jiaotong Science and Technology[J], No. 2, 2009, pp. 44-45

But motion capture only extracts the information of articulation point demarcated ahead of time and discards a large number of extremely rich animation material elements contained in the video information.
Acknowledgements This paper is supported by Outstanding Young Teacher Training Project of Communication University of China ,National Natural Science Foundation of China (61201236) and Engineering Planning Project of Communication University of China(XNG1230).
In Science in China Series F: Information Sciences 52, February 2009, 162-71
[5] Jinhui Yu, Xinan Jiang, Haiying Chen, Cheng Yao, Real-time Cartoon Water Animation, The Journal of Computer Animation and Social Agent, vol. 18, 2007,pp405-414

Glucose becomes a potential raw material in fructose production in the isomerization process.
[5] Nataša Novak Tušar, Vencˇeslav Kaucˇicˇ, and Nataša Zabukovec Logar National, Functionalized Porous Silicates as Catalysts for Water and Air Purification, Hybrid Materials, Composite, and Organocatalyst. (2013) 365–383 [6] S.
Wibisono, The effect of precipitation pH and temperature of The Mg/Al Hydrotalcite synthesis on the glucose isomerization, International Journal of Applied Science and Technology, Politekik Negeri Bandung, vol. 3, no. 1 (2022) 22–35 [17] Li, C., Wang, Y., Zhang, Y., Wang, M., Sun, X., & Cui, H., Isomerization Kinetics of Glucose to Fructose in Aqueous Solution with Magnesium-Aluminium Hydrotalcites, ChempubSoc, Europe, Chemistry Select, vol 5 (2020) 270-279
Palkovits, Catalytic activity and stability of hydrophobic Mg/Al hydrotalcite in the continuous aqueous-phase isomerization of glucose into fructose†, Catalysis Science and Technology, 4 (2014) 4322–4329 [20] D.
Witkamp, Effect of pore size distribution and particle size of porous metal oxides on phosphate adsorption capacity and kinetics, Chemical Engineering Journal, Vol. 358 (2019) 160-169

Theoretical Analysis In order to have a better guidance on the production and to find out the factors that can possiblely affect the separation, the theoretical analysis of air separation on the material after shelling of Camellia oleifera should be carried out.Air separation is to use of the different of aerodynamic characteristics of materials to separate, extractions in the field of indoor air cleaning as free individuals rather than groups in the form of movement, Therefore, the movement and dynamic of extractions were analyzed,The extractions of the individual was as a point of mass m.
The acting force on the extractions: P=Fk2=F (1) Wherein:p—the acting force on the point of mass m,N F—the area of material was acted by air flow,m2 kρ—flotation coefficient, νρ—suspension velocity,m/s ν—the relative velocity of air to material ,m/s The direction of airflow with the same force P,Fig.1 shows the determination of the relative velocity,V0 shows the velocity of material falling from the hopper, u shows the air velocity, ν shows the relative velocity of air to material and is equal and opposite to w the relative velocity of material to air. θ shows the angle between air velocity and the horizontal, δ shows the angle between V0 and the horizontal, when the material spended a Period of time to move from the initial position,its velocity becames V.
direction θ, the velocity of material falling from the hopper V0 and the direction angle θ [8-9].
Moreover, the running time of material in the air is related to the height of fan from the ground, so the final distance of material movement in the horizontal direction is related to the height of fan.
The materials was feed into electromagnetic vibrating feeder by hand, dosing can be achieved by the feeder.

InIOP Conference Series: Materials Science and Engineering 2016 Aug (Vol. 142, No. 1, pp. 012009).
Materials Science and Technology 2018, MS and T 2018, 2019, 875-881
Superplasticity of nanocrystalline and amorphous materials.
Promising materials, 2010, pp. 228– 241
Material Science Forum, 2014, v. 794- 796, pp. 784– 789