This paper provides a fair comparison between four most common symmetric key cryptography algorithms: AES, DES, CAST 128 and Blowfish. The comparison takes into consideration the behavior and the performance of the algorithm when different data load are used as the main concern here, is to study the performance of the algorithms under different settings. The comparison is made on the basis of these parameters: speed, block size, and key size........

Keywords: Comparison, Avalanche Effect, Integrity Check, Symmetric Encryption Algorithm

[1] Alanazi Hamdan.O., Zaidan B.B., Zaidan A.A., Jalab Hamid.A., Shabbir .M and Al- Nabhani.Y, "New Comparative Study Between DES, 3DES and AES within Nine Factors" Journal of Computing, Volume 2, Issue 3, March2010, ISSN 2151-9617, pp.152-157 .
[2] B. Schneider, "Applied Cryptography: Protocols, Algorithms, and Source Code in C", 2nd ed., John Wiley & Sons, 1995.
[3] W. Stallings, "Cryptography and Network Security: Principles and Practices", 2nd ed., Prentice Hall, 1999.
[4] C.M. Adams, "Constructing symmetric ciphers using the CAST design procedure", Designs, Codes, and Cryptography, Vol. 12, No. 3, November 1997, pp. 71–104
[5] Anoop MS, ―Public key Cryptography (Applications Algorithm and Mathematical Explanations). press.

This paper presents use of polynomial shape function in shear deformation theory for thick plate analysis. Total potential energy equation of a thick plate was formulated from the first principle. This equation was subjected to direct variation to obtain three simultaneous direct governing equations for determination of displacement coefficients. Shape (profile) equation for vertical shear stress through the thickness of the plate was formulated from the first principle. From this profile equation, the deformation line equation (called function of z or s) was obtained. This is the model from this study. A numerical problem for a rectangular plate simply supported around all the edges was used to test the sufficiency of this study. Both polynomial and trigonometric shape functions were used in this problem............

Keywords: - shear deformation, vertical shear stress, stress, deflection, displacement, potential energy shape function

[1] S. A. Sadrnejad, A. Saedi Daryan and M. Ziaei (2009). Vibration Equations of Thick Rectangular Plates Using Mindlin Plate Theory. Journal of Computer Science 5 (11): 838-842, 2009 ISSN 1549-3636
[2] T. H. Daouadji, A. Tounsi and El A. A. Bedia (2013).A New Higher Order Shear Deformation Model for Static Behavior of Functionally Graded Plates. Advances in Applied Mathematics and Mechanics Adv. Appl. Math. Mech., Vol. 5, No. 3, pp. 351-364
[3] S. Sayyada Y. M. Ghugal (2012). Bending and free vibration analysis of thick isotropic plates by using exponential shear deformation theory. Applied and Computational Mechanics 6, pp. 65–82
[4] M. V. V. Murthy (1981). An Improved Transverse Shear Deformation Theory for Laminated Anisotropic Plates. NASA Technical Paper 1903

In the recent days, the demand for high precision components is increasing rapidly, forcing the manufacturing industries to produce component with high surface finish. Because of this reason, today the most challenge of any manufacturing industries is to reduce the rejection as well as rework rate to avoid going into loses.......

Key words：CAM, Mandrel, Optimization, Spike Support Component, Reduce Rejection, Why-Why Analysis, etcs

[1] C. Matthews, Aeronautical engineer's data book (2nd edition, Butterworth-Heinemann. p. 229, ISBN 978-0-7506-5125-7, 2005)
[2] D. M. Hosking, N. Anderson, Organizational change and innovation( Taylor & Francis, p. 240, ISBN 978-0-415-06314-2, 1992)
[3] F. Kreith, The CRC handbook of mechanical engineering (CRC Press. p. 15-1, ISBN 978-0-8493-9418-8, 1998).
[4] F. Pichler, R. M. Díaz, Computer aided systems theory( Springer p. 602, ISBN 978-3-540-55354-0, 1992)
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Qijia region is located in the northern Song Liao Basin in the central depression area, Gaotaizi reservoir is a typical tight reservoir, the study of the effects of diagenesis on reservoir properties are conducive to further exploration development. The rock types of Gaotaizi reservoir is mainly lithic arkose. The maturity of element is low, mainly fine-grained. Primary pores are less, secondary pores are mainly intragranular dissolution pores. The average porosity of Gaotaizi reservoir is about 13.34%, the average permeability is 27.41×10-3um2. On the basis of including vitrinite reflectance, the highest pyrolysis temperature, the transformation of clay minerals of Illite/montmorillonite mixing layer, rock features, authigenic mineral assemblage of sandstone, Gaotaizi reservoir is belong to middle diagenesis........

Key words：Songliao Basin; Qijia region;Gaotaizi reservoir;Diagenesis;Reservoir

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Polymer flooding has become an important means to improve oil recovery, but there are a lot of improvement in the control of the amount of polymer to the largest increase in the economic profit of the technology.For example, the calculation of the amount of polymer is one of the important parameters of block pore volume, the traditional method is the average porosity calculation of the whole block, the average effective thickness, pore volume of product area to calculate the block. But this is only the average value of the block. Actually well point in the block is not distributed evenly, the triangulation method can avoid flat error caused by traditional methods in the thickness of the grinding, reaction pore volume distribution characteristics within the block, which is conducive to the development stage of oilfield development program and the maximum increase economic benefits.

Key words：Polymer flooding pore volume triangular mesh method

[1] CAPEN E C, VADCON. Probabilistic reserves Here at last [J]. SPEReservoir Evaluation&Engineering, 2001，4(5):3 87-394.
[2] Zubari, Hisham K, Kumar K. Reserves estimation and classification challenges in a mature oil field [C].SPE 15t h Middle East Oil and Gas Show and Conference, Bahrain,2007. United States, Society of Petroleum Engineers:400-407.
[3] Ambastha A K, Wong K H. Decline curve analysis for Canadian oil reservoirs under waterflood conditions [J]. Journal of Canadian Petroleum Technology, 1998, 37(1):20-26.
[4] Hodaie, Homayoun, Bagci A S. Polymer-augmented waterflooding in a reservoir with a bottomwater zone C].Proceedings of the 8th Middle East Oil Show and Conference. Manama, Bahrain, 1993.United States, Soc of Petroleum Engineers of AIME:329-338.

With the rapid development of information technology and the increasing importance of security technology, the design and realization of the intelligent monitoring system has become particularly important. Target tracking is a key part of video surveillance system, which is the foundation of pattern recognition, behavior analysis and other advanced signal processing. Therefore, the target detection and tracking is an important research project. At present, aimed at one or more target tracking has already had many kinds of algorithm methods. This article mainly briefly outline the characters and development situations of different methods and give a brief introduction to the situation of application of target tracking technology. For related personnel reference..

Key words：Target detection,Target tracking,Analysis of behavior,particle filter

[1] Kim S, Lee B, Jeong J, et al. Multi-object tracking coprocessor for multi-channel embedded DVR systems[J]. Consumer Electronics, IEEE Transactions on, 2012, 58(4): 1366-1374.

[2] Szpak Z L, Tapamo J R. Maritime surveillance: Tracking ships inside a dynamic background using a fast level-set[J]. Expert Systems with Applications, 2011, 38(6): 6669-6680.

[3] Matsuyama T, Ukita N. Real-time multitarget tracking by a cooperative distributed vision system[J]. Proceedings of the IEEE, 2002, 90(7): 1136-1150.

[4] Prisacariu V A, Reid I. 3D hand tracking for human computer interaction[J]. Image and Vision Computing, 2012, 30(3): 236-250.

[5] Ma Y, Mao Z H, Jia W, et al. Magnetic hand tracking for human-computer interface[J]. Magnetics, IEEE Transactions on, 2011, 47(5): 970-973.

Faults play an important role in the complex fault-block reservoir, fine fault interpretation and combination matter a lot. Aiming at the difficulty of the complex fracture system and fault interpretation, this paper bases on the union of wells and seismic data, and make full use of spectral decomposition, seismic curvature, coherence analysis and frequency mixing with 3 colors, then governs the whole interpretation with 3D structural model. With the use of various methods, we start to identify faults. This technique achieves a good effect in research area, especially for the small fault identifying, overcomes the lack of resolution in seismic data, increase the interpretation accuracy, find and delineate a batch of small faults, and guide the plane distribution and space intersection relation of faults, commit the regional low-amplitude structure, achieve the goal of fine structural interpretation.

Key words：Faults recognition; Detailed interpretation; Coherence analysis technique; Fault identify

[1] Li Zhandong, XuDayou. Fault identification technology in beir oilfield application [J]. The practice and understanding of mathematics, 2015, 05: 94-101.

[2] Fang Hongping, GuHanming. Progress in fault recognition and quantitative interpretation method [J]. Journal of engineering geophysics, 2013, 12:609-615.

[3] Zhang Qingyun. The comprehensive interpretation of seismic data of fault recognition and interpretation of applications [J]. Journal of China petroleum and chemical industry standard and quality, 2012, S1:272.

[4] Li Zhandong, Zhang Mingxue, Hu Yushuang. Sag in hailaer basin tectonic evolution and oil and gas control [J]. Science, technology and engineering, 2010,09: 2066-2074+ 2078.

[5] Liu Shufen, Zhang Haixiang. Detailed interpretation technology application in Suzy Noel oilfield development [J]. Progress in geophysics, 2014, 03:1189-1193.

In this work, we consider the problem of fluid flow through layered porous media. A generalized algorithm is developed to handle flow through a finite number of layers and is based on casting the governing equation in a binary form that incorporates flow parameters capable of generating the Navier-Stokes equations as well as the well-known models of flow through porous media. A finite difference scheme of third-order accuracy is developed for the velocity and shear stress at the interfaces between layers, and numerical solution is obtained for a number of configurations involving flow in a two-dimensional channel bounded below and above by porous layers.

Key words：Coupled parallel flow; Numerical algorithm.

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[4] K. Vafai and R. Thiyagaraja, Analysis of flow and heat transfer at the interface region of a porous medium, Int. J. Heat Mass Transfer, 30(7), 1987, 1391-1405.

[5] K. Vafai and C. L. Tien, Boundary and inertia effects on flow and heat transfer in porous media, Int. J. Heat Mass Transfer, 24, 1981, 195-203.

Spread Spectrum technique is a digital passband technique. It uses a special code which is known only to the transmitter and receiver of that message. The special code appears as a noise signal to the jammer who tries to jam the channel. In this paper, we present the Direct Sequence Spread Spectrum. Firstly, we show an overview of Direct Sequence Spread Spectrum, then, we simulate Direct Sequence Spread Spectrum using MATLAB. The results of simulation are presented in this paper. We are clearly demonstrating the benefits of Direct Sequence Spread Spectrum in a digital communication system in providing privacy and antijamming. The simulation by MATLAB program simplifies the study, analysis and development of these techniques in modern digital communication networks

Key words：Spread Spectrum, DSSS, BPSK, MATLAB Simulation

[1] .Vandana Nath and Abhishesh Kumar "A Comparative Study of Spread Spectrum Technique Based onVarious Pseudorandom Codes", Global Journal of researches in engineering, Volume 12, Issue 6, Version 1.0, May 2012.

[2]. Vishal Sharma, Richa Sharma "ANALYSIS OF SPREAD SPECTRUM IN MATLAB" International Journal of Scientific & Engineering Research, Volume 5, Issue 1, January-2014.

[3] Thamer M. Jamel and Sadiq K. Gharkan "Design and simulation PN synchronization of base band direct sequencespreadspectrumDS/SSsystem"January2009 https://www.researchgate.net/publication/212116390

[4] ." Spread spectrum concept", 2000, http://www.labyrinth.net.au/~steve/papers/concepts.pdf.

[5] Behrouz A.Forouzan "data communications and networking", 4th edition.