Paper Type	::	Research Paper
Title	::	The Finite Difference Methods for –Nonlinear Klein Gordon Equation
Country	::	Iraq
Authors	::	Fadhil H. Easif ||, Saad A. Manaa ||, Dilveen Mekaeel
Page No.	::	01-05
	::	10.9790/3021-031150105
	::	0.4/3021-031150105
		3021-0311-0505

Klein Gordon equation has been solved numerically by using fully implicit finite difference method (FIFDM) and exponential finite difference method (ExpFDM) and we found that both methods can solve this kind of problems, example showed that fully implicit method is more a accurate than exponential finite difference method.

 

Keywords: - Klein Gordon Equation, exponential finite difference method, fully implicit method.

[1] S. Dmitriev, P. Kevrekidis, N. Yoshikawa and D. Frantzeskakis, exact static solutions for discrete models free of the peierls-nabarro barrier :discretized first integral approach, arXiv:nlin.PS/0603074, 2 (2006), 1-16.
[2] A. M. El-Sayed, and M. Garber, The Adomian decomposition method for solving partial differential equations of fractal order in finite domains, Phys. Lett. A., 359 (2006) 175-182.
[3] J .H. Mathews and K.D. Fink, Numerical Method Using Matlab, Prentice-Hall, Inc. (2004).
[4] R. C. Mcowen, Partial differential equations: methods and applications, Library of Congress Cataloging, (1995).
[5] M. Ndour, K.Abbaoui, H. Ammar, and Y.Cherruault, An example of an interaction model between two species, Kybernetes 25 (1996) 106-18.

Paper Type	::	Research Paper
Title	::	Analysis of the Relevance of 4-Year Diploma-in-Mechanical Engineering Course Curricula with Occupational Tasks of Shipbuilding Industries in Bangladesh
Country	::	India
Authors	::	Mohammad Mahbubur Rahman ||, Dr. Md. Abu Raihan ||, Dr. Md. Abdul Awal Khan
Page No.	::	06-13
	::	10.9790/3021-031150613
	::	0.4/3021-031150613
		3021-0311-0513

This study was aimed to study the relevance/suitability of course curricula of Diploma-in-Mechanical engineering with the occupational tasks of ship building industries in Bangladesh. The total number of population was all the engineers and administrators who are working in Shipbuilding Industries in Bangladesh. The sample was selected by using the non-probability convenience sampling technique. Here the sample comprised subjects who were simply available in a convenient way and they were willing to cooperate for providing required information. The total sample of this study was 60 from selected famous Shipbuilding Industries those have a total set of instruments, manpower, environment, good administration and others required facilities. The results show that the occupational tasks of shipbuilding industries are very similar and relevant with 4-year Diploma-in-Mechanical Engineering course curricula and the syllabus is also well developed. The researcher recommended to develop the course of diploma in mechanical engineering to integrate with the shipbuilding industries in Bangladesh.

 

Keywords: - Analysis, Course Curricula, Relevance, Occupation, Occupation Task, Shipbuilding Industries.

[1] Hossin, A. (2010). "A study of the relationship between occupational skills provided to polytechnic diploma engineers by BTEB and requirement of industry of Bangladesh".
[2] Iqbal (2010) Performance evaluation of the contemporary shipbuilding industries in Bangladesh, Retrieved on October, 23, 2023 from the Web http://www.banglajol.info
[3] Marine TECH Bangladesh (2013). Report on Third International Impression, 2013.
[4] Third International Impression, Dhaka (2013), Marine Industrial Equipment, Shipbuilding and Navel Architectural Design, Training & Education Expo.
[5] Zakaria (2010). Performance evaluation of the contemporary shipbuilding industries in Bangladesh, Journal of Naval Architecture and Marine Engineering.

Paper Type	::	Research Paper
Title	::	A Post Processing Technique for Reducing Blocked Artifacts in JPEG Image Compression
Country	::	India
Authors	::	Mukesh Dalal ||, Vikram Singh
Page No.	::	14-18
	::	10.9790/3021-031151418
	::	0.4/3021-031151418
		3021-0311-0518

Compression of digital images has been a topic of research for many years. The main role of compression is to reduce memory requirements for transmission and bandwidth requirements for storage of all forms of data. This paper aims to report a post processing technique to reduce the blocking artifacts in JPEG compressed images up to a very extent keeping in mind that less computation efforts would be made. The proposed approach is hybrid model of both spatial domain and frequency domain in which post processing is performed in two phases. In first phase, pre-filtering is implemented in spatial domain while second phase, selected DCT coefficients are modified.

 

Keywords: - Anti-aliasing filter, The APDCT (All Phase Discrete Cosine Transform), Blocking artifacts, JPEG image Compression, PSNR

[1] Y. Luo and R. K. Ward, "Removing the blocking artifacts of Block-Based DCT compressed images", IEEE transactions on image processing, Vol. 12, No.7, July 2003.

[2] Cheng-You, Zheng-Xin Hou, Kai He, Ai-Ping Yang "JPEG-Based Image Coding Algorithm at Low Bit Rates with Down-Sampling and Interpolation", Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on 12-14 Oct. 2008.

[3] Z. X. Hou and X. Yang, "The all phase DFT filter", proceedings of the 10th IEEE Digital Signal Processing (DSP) Workshop and the 2nd IEEE signal Processing Education (SPE) Workshop, Pine Mountain, Georgia, USA, pp. 221-226. Oct. 2002.

[4] Z. X. Hou, "The construction of the three kinds of 2-dimensional superimpose digital filter," Journal of Tianjin University, Vol. 18, no. 1, pp. 29-41, Jan. 1985.

[5] K. Sayood, "Introduction to Data Compression", 3rd Edition, Elsevier, 2006.

Paper Type	::	Research Paper
Title	::	A Metric for Modelling and Measuring Complex Behavioural Systems
Country	::	U.K
Authors	::	Kieran Greer
Page No.	::	19-28
	::	10.9790/3021-031151928
	::	0.4/3021-031151928
		3021-0311-0528

This paper describes a metric for measuring the success of a complex system composed of agents performing autonomous behaviours. Because of the difficulty in evaluating such systems, this metric will help to give an initial indication as to how suitable the agents would be for solving the problem. The system is modelled as a script, or behavioural ontology, with a number of variables to represent each of the behaviour attributes. The set of equations can be used both for modeling and as part of the simulation evaluation. Behaviours can be nested, allowing for compound behaviours of arbitrary complexity to be built. There is also the capability for including rules or decision making into the script. The paper also gives some test examples to show how the metric might be used.

 

Keywords: - Autonomous Behaviour, Complex System, Modelling Script, Metric

[1] F. Macias, The Test and Evaluation of Unmanned and Autonomous Systems, ITEA Journal, 29, 2008, pp. 388 – 395.
[2] C. Nguyen, A. Perini, P. Tonella, S. Miles, M. Harman and M. Luck, Evolutionary Testing of Autonomous Software Agents, 8th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2009), Decker, Sichman, Sierra and Castelfranchi (eds.), Budapest, Hungary, 2009, pp. 521 – 528.
[3] J. Holland, Hidden order: how adaptation builds complexity (Reading, MA: Perseus; 1995).
[4] P.P. Grassé, La reconstruction dun id et les coordinations interindividuelles chez Bellicositermes natalensis et Cubitermes sp., La théorie de la stigmergie: essais d‟interprétation du comportement des termites constructeurs, Insectes Sociaux. 6, 1959, pp. 41 - 84.

[5] S. Garnier, J. Gautrais, and G. Theraulaz, The biological principles of swarm intelligence, Swarm Intelligence, 1, 2007, pp. 3 – 31.

Paper Type	::	Research Paper
Title	::	Thermal properties of Conilon coffee fruits
Country	::	Brazil
Authors	::	Casanova, Pedro ||, Corrêa, Paulo C. ||, Solís, Kattia ||, Campos, Julio C. C.
Page No.	::	29-35
	::	10.9790/3021-031152935
	::	0.4/3021-031152935
		3021-0311-0535

The specific heat, thermal conductivity and diffusivity of coffee fruits (Coffea Canephora) from the clone 32 of clonal variety EMCAPA 8131 were determined for moisture content ranging from 0.134 to 1.454 d.b. for unripe fruits and from 0.133 to 1.634 d.b. for ripe fruits (cherries). The specific heat was determined by the method of mixtures and the values from 1.442 to 3.298 kJ kg-1 K-1 and 1.431 to 3.615 kJ kg-1 K-1 were obtained for the unripe and cherry fruits, respectively and increased linearly with increasing moisture content. The thermal conductivity was measured by transient method with linear source of heat and its behaviour is similar to that of specific heat, ranging from 0.117 to 0.204 W m-1 K-1 and 0.108 to 0.216 W m-1 K-1 for unripe and cherry coffee, respectively. The thermal diffusivity values calculated by the indirect method from the results of specific heat and thermal conductivity ranged from 1.671 × 10-7 to 1.044 × 10-7 m2 s-1 and 1.594 × 10-7 to 1.047 × 10-7 m2 s-1 for unripe and cherry coffees, showing a decreasing linear ratio as moisture content increased.

 

Keywords: - Coffea Canephora; thermal conductivity; specific heat; thermal diffusivity.

[1] N. N. Mohsenin, Thermal properties of foods and agricultural materials. New York: Gordon and Breach, 1980, p. 407.

[2] N. N. Mohsenin, Physical properties of plant and animal materials. New York: Gordon and Breach Publishers, 1986, p. 841.

[3] S. Pabis, D. S. Jayas, and S. Cenkowski, Grain drying: theory and practice. New York: John Wiley & Sons, Inc, 1998, p. 303.

[4] D. B. Brooker, F. W. Bakker-Arkema, and C. W. Hall, Drying and Storage of Grains and Oilseeds. New York: Van Nostrand Reinhold, 1992, p. 450.

[5] P. Afonso Júnior, P. Corrêa, and F. Pinto, "Propriedades termofísicas dos frutos e sementes de café : determinação e modelagem.," Revista Brasileira de Armazenamento, no. 4, pp. 09–15, 2002.