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Numerical Simulation and Performance Optimization of the Gain Characteristic of EY-CDWA Optical Waveguide Amplifier Yin Xiangbao1,a, Li Xiaoping2,b, Li She3,c 1Science Academy of Hei Longjiang Institude of Science and Technology, Harbin, China a xiaobao781219@163.com, b lll9705@sina.com, c lishe1979@163.com Keywords: Gain; Pump power; waveguide length; numerical simulation Abstract.
The reason for the difference may be the different parameters of the different preparation methods, even in the same substrate material.
Fund:1, No. 11533065, Science and technology research project in Department of Education in Hei Longjiang, 2008 2, No. 12511493, Science and technology research project in Department of Education in Hei Longjiang, 2011 References [1] Wang Xingjun; Cao Baosheng; Lei Mingkai, Photoluminescence Properties of Er3+-Yb3+ Co-doped Al2O3 Powders Prepared by Sol-gel Method, ACTA PHOTONICA SINICA, 2004, Vol.33, No.8, pp.935-938 [2] Lei Hongbing; Yang Qinqing; Ou Haiyan; et al., Mechanism on Energy Transfer of Photoluminescence Exciton in Erbium Doped Silicon, CHINESE JOURNAL OF SEM ICONDUCTORS, 1999, Vol.21, No.3. pp. 232-238 [3] Li C R, Song C L, Li S F, et al.
Appl Phys Lett, 2001, Vol.78, No.18, pp.2709-2711 [5] Chen Haiyan, Liu Yongzhi, Dai Jizhi1, et al. , Design of Er3+-Yb3+ Co-Doped Phosphate Glass (LGS-L) Waveguide Amplifier, ACTA OPTICA SINICA, 2003, Vol.23, No.6, pp.697-701 [6] Gao Jingsheng, Song Changlie, Li Chengren, et al., Photoluminescence of Yb3+/Er3+ Co-doped Al2O3 Film Fabricated by Medium Frequency Sputter, Journal of Optoelectronics Laser, 2004,Vol. 15, No.10, pp.1162-1165 [7] Li Chengren, Song Changlie, Li Shufeng, et al., Comparison of Photoluminescent Characteristics between Er-doped Al2O3 Film and Yb-Er Co-doped Al2O3 Film, SEMICONDUCTOR OPTOELECTRONICS, 2005, Vol.26, No.3, pp. 57-62 [8] Yang Xianglin, Optical Amplifier and Its Application [M], Publishing House of Electronics Industry, 2000, pp.28-74 [9] Chen Haiyan, Study on Key Technologies of Broad-Band Er-Doped Optical Waveguide Amplifiers[D].University of Electronic Science and Technology of China, 2004, pp.18-47 [10] Zhang Qingli, He Wei, Sun Dunlu, et al.,

Profit and loss calculation model of data synchronization based on multi-link Xiao Yu College of Computer Science, Sichuan Normal University, Chengdu, 610101, China fishyx1@163.com Keywords: component; Markov; Data synchronization; Single link; Multi-link; Profit and loss Abstract.
Define the off-state-losses matrix as m×n matrix A, aij is on behalf of off-state-losses between data subset i and application system j： (6) It brings resources losses to upgrade link between data subsets and application systems like human, material and financial resources.
Information Science, 2011. 29 (10) 1585-1586
Journal of Internet Services and Applications, 2010. 1 (2) 95-115
Journal of University of Electronic Science and Technology of China, 2011. 40 (5): 732-735

College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014 , China; 2.
Acknowledgements This study was financially supported by China Postdoctoral Science Foundation Project (20080430653) and special Project (200902231).
Cheng, Corrosion of steel under the defected coating studied by localized electrochemical impedance spectroscopy, Electrochimica Acta, 53, 2008: 4740–4747 [4] Jie Kong, Xiaodong Fan, Wenqiang Qiao, Study of a skin-core type of crystallinity distribution within polyethylene specimen crystallized under high pressure, Polymer, 2005 (46): 7644-7651 [5] Callon N K, spencer M, Crawfard R J .Effects of cooling rate on the mechanical properties of rotationally moulded polyethylene parts, ANTEC Papers, 2002 [6] Gonnet J.M, Guillet J., Sirakov J., “In-situ”Monitoring of the non-isothermal crystallization of polymers by dielectric spectroscopy, Polymer Engineering and Science, 2002, 42 (6) : 1159-1170
[7] Sperling L.H., Introduction to physical polymer science, 2nd ed, New York: Wiley, 1992:198 [8] Bassett DC.
Poly(ethylene terephthalate) , Polymer, 1993 (34): 3787-3795 [11] Reading M., Elliott D., Hill V.L., New approach to the calorimetric investigation of physical and chemical transitions, Journal of thermal analysis, 1993, 40: 949–955 [12] Gill PS, Sauerbrern SR, Reading M., Modulated differential scanning calorimetry, Journal of thermal analysis, 1993, 40: 931–939

Study on dynamic relationship between economic growth and energy consumption in Chongqing- Based on 1980-2011 data Wang Sheng1, a ,Dai Chunyan2,b ,Wang Enchuang3,c ,Li Chunyan 4,d 1Chongqing Acadmey of Sccial Sciences,Chongqing,400030,China 2Chongqing Technologies and Business University, Chongqing, 400067, China 3Business Administration College, Chongqing University of Technology, Chongqing 400050，China 4Chongqing Acadmey of Sccial Sciences,Chongqing,400030,China a3120028@qq.com,bdaichunyan@ctbu.edu.cn,cwangenchuang@163.com,d65328836@qq.com Key Words: economic growth; energy consumption; VAR model; impulse response Abstract: Analyzed the dynamic interaction characteristics of Chongqing Economic growth and energy consumption between 1980-2011 based on vector auto regression model, impulse response function.
Introduction Energy is an important strategic material for national economic and social development.
Acknowledgements This work was financially supported by Chongqing ‘s major decisions advisory research (2012－ZD12), National society science Foundation(12XJY016);Chongqing Natural Science Foundation (cstc2011jjA90008).
Journal of Energy and Development. 3(1978),p.401-403
Journal of Electricity and employment. 13(1987),p.113-122

Besides the three main categories of bistable mechanisms such as latch-lock mechanisms, hinged multisegment mechanisms, and residual-compressive-stress buckled beams, a novel unsymmetrical bistable mechanism with a combined structure of permanent magnets and mechanical beams is proposed, and the bistability of such combined structure is analyzed based on the magnetic-charge model and material mechanics theory.
Based on the theory of material mechanics [10] and the beam boundary conditions, the stiffness of the elastic beam k can be obtained as follows
The bistability of such bistable structure is analyzed based on the magnetic-charge model and material mechanics theory.
Acknowledgements This work is supported by the Key Project of Chinese National Programs for fundamental Research and Development (973 Program No. 2011CB610304), National Natural Science Foundation of China for Distinguished Young Scholars (Grant No. 60725415), Doctoral Fund of Ministry of Education of China (No.20100041120019), China Postdoctoral Science Foundation (No. 20090461286, No. 201003665）and the Fundamental Research Funds for the Central Universities.
Journal of Applied Mechannics Transactions of the ASME，vol.75, no.4, pp.0410201-0410207, 2008

Literature Review Drilling is a cutting method in which a drill bit is used to produce a circular cross section hole in solid materials.
Selection of high-quality equipment and materials is crucial to ensure that the experiment runs well.
Ganta, “Optimization of process parameters in drilling of GFRP composite using Taguchi method,” Journal of Materials Research and Technology, vol. 3, no. 1, pp. 35–41, 2014, doi: 10.1016/J.JMRT.2013.10.007
Chattopadhyaya, “Sustainability in drilling of aluminum alloy,” Cleaner Materials, vol. 3, p. 100048, Mar. 2022, doi: 10.1016/J.CLEMA.2022.100048
Vafadar, “A review: drilling performance and hole quality of aluminium alloys for aerospace applications,” Journal of Materials Research and Technology, vol. 9, no. 6, pp. 12484–12500, Nov. 2020, doi: 10.1016/J.JMRT.2020.09.003

Previous studies to compatibilize these two polymers using the ethylene/glycidyl methacrylate copolymer (EGMA) resulted in improved processing and mechanical properties of the final materials obtained[8,9].
Methodology Materials.
Acknowledgments The authors thank the technical staff of the Laboratory of Testing Materials (LEMAT) and Center of Nanotechnology Research and Development (CIDNA) at ESPOL.
Polymer Engineering & Science. 34 (1994) 1709-1719 [9] Y.
Journal of Polymer Applied Science 132 (2015), 9180-8

Acknowledgements This work was supported by the grant (no. 50908231) from the National Natural Science Foundation of China (NSFC).
Science press (2009) [4] Jing-ping Ou.
Science press (2003) [5] Y.L.
China Civil Engineering Journal Vol. 39(11), (2006) [7] Y.
Smart structures and materials Vol. 229-235(2003) [11] W.L.

Agricultural Engineering International: the CIGRE journal.
Fei, Discussion and implementation of building path topological relation and analyzing the shortest path based on MapX, Science of surveying and mapping, Vol.31 (2006), pp.96-98
Zhao and Y.Liu, GIS-based Inner Mongolia Grassland Fire Spread Simulation System, In: Proceedings of International Conference on Computer Science and Software Engineering (2008), pp.923-925
[6] X.Yin, GIS-based Simulation System for Wartime Military Highway Transportation Highway Transportation, In Proceedings of the 5th International Conference on Computer Science & Education (2010), pp.1810-1812
Applied Mechanics and Materials, Vol.380-384 (2013), pp. 2573-2576.

The system is under static observation mode, the project management staff can observe simulation model of various construction process, components and the entire tunnel，which form intuitive understanding to size, location and materials of holes and component of the tunnel and enhance the project management staff to awareness and understanding of the design results on the plane.
Acknowledgements This work was financially supported by the Hunan Provincial Education Department Science Foundation (12C0460), the Guizhong Provincial Communications Department Science Foundation (2011-321-022).
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