{"title":"Parametric Cost Estimating Relationships for Design Effort Estimation","authors":"Adil Salam, Nadia Bhuiyan, Gerard J. Gouw","volume":79,"journal":"International Journal of Industrial and Manufacturing Engineering","pagesStart":1359,"pagesEnd":1365,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/16365","abstract":"<p>The Canadian aerospace industry faces many<br \/>\r\nchallenges. One of them is the difficulty in estimating costs. In<br \/>\r\nparticular, the design effort required in a project impacts resource<br \/>\r\nrequirements and lead-time, and consequently the final cost. This<br \/>\r\npaper presents the findings of a case study conducted for recognized<br \/>\r\nglobal leader in the design and manufacturing of aircraft engines. The<br \/>\r\nstudy models parametric cost estimation relationships to estimate the<br \/>\r\ndesign effort of integrated blade-rotor low-pressure compressor fans.<br \/>\r\nSeveral effort drivers are selected to model the relationship.<br \/>\r\nComparative analyses of three types of models are conducted. The<br \/>\r\nmodel with the best accuracy and significance in design estimation is<br \/>\r\nretained.<\/p>\r\n","references":"<p>[1] AIAC, Aerospace Industries Association of Canada,\r\n2012 http:\/\/www.aiac.ca\/uploadedFiles\/Resources_and_Publications\/Ind\r\nustry_Statistics\/Revised%202010%20Stats_January%2025%202011_F\r\nV.pdf.Latest access 04\/07\/13\r\n[2] Statistics Canada, 2012 http:\/\/www.servicecanada.gc.ca\/eng\/qc\/job_\r\nfutures\/statistics\/2146.shtml, Latest access 04\/07\/13\r\n[3] A. E. Smith, A. K. Mason, Cost estimation predictive modeling:\r\nregression versus neural network, The Engineering Economist, vol. 42,\r\nno. 2, pp. 137-161, 1997.\r\n[4] M. C. Kocak\u00fcl\u00e2h, A. D. Austill, Product development and cost\r\nmanagement using target costing: a discussion and case analysis, Journal\r\nof Business & Economics Research, vol. 4, no. 2, 2006.\r\n[5] A. Elragal, M. Haddara, The use of expert panels in ERP cost estimation\r\nresearch, Enterprise Information Systems: Communications in Computer\r\nand Information Science, vol. 110, no. 2, pp. 97-108, 2010.\r\n[6] G. Bounds, The last word on project management, IIE Solutions, pp. 41-\r\n43, 1998.\r\n[7] G. Colmer, M. Dunkley, K. Gray, P. Pugh, and A. Williamson,\r\nEstimating the cost of new technology products, International Journal of\r\nTechnology Management, vol. 17, nos. 7-8, pp. 840-846, 1999.\r\n[8] G. Pahl, W. Beitz, H-. Schulz, U. Jarecki, Engineering Design: A\r\nSystematic Approach, Springer-Verlag, Germany, 2007.\r\n[9] PMI, Project Management Institute, A guide to the project management\r\nbook of knowledge, Project Management Institute Standards Committee,\r\n2000.\r\n[10] ISPA, International Society of Parametrics Analysis, Parametric\r\nestimating handbook, ISPA\/SCEA Joint Office, Virginia, 2009.\r\n[11] N. Fragkakis, S. Lambropoulos, G. Tsiambaos, Parametric model for\r\nconceptual cost estimation of concrete bridge foundations, Journal of\r\nInfrastructure Systems, vol. 17, no. 2, pp. 66-74, 2012.\r\n[12] M. H. Kutner, C. J. Nachtsheim, J. Neter, and W. Li, Applied linear\r\nstatistical models, McGraw-Hill, New York, 2004.\r\n[13] D. C. Montgomery, Introduction to Statistical Quality Control, John\r\nWiley, Ney York, 2005.\r\n[14] K. Muralidhar, R. Parsa, R. Sarathy, A general additive data perturbation\r\nmethod for database security, Management Science, vol. 45, no. 10, pp.\r\n1399-1415, 1999.\r\n[15] S. Looney, T. Gulledge Jr., Use of the correlation coefficient with\r\nnormal probability plots, The American Statistician, vol. 39, pp. 75-79,\r\n1985.\r\n[16] S. M. Ross, Introductory statistics, 3rd edition, Academic Press\r\n(Elsevier), Massachusetts, 2010.\r\n[17] S. Weisberg, Transformation: applied linear regression, Wiley-\r\nInterscience, Hoboken, New Jersey, 2005.\r\n[18] J. A. Snyman, Practical mathematical optimization: an introduction to\r\nbasic optimization theory and classical and new gradient-based\r\nalgorithms, Springer, New York, 2005.\r\n[19] A. Salam, N. Bhuiyan, G. J. Gouw, S. A. Raza, Estimating design effort\r\nfor the compressor design department: A case study at Pratt & Whitney\r\nCanada, Design Studies, vol. 30 no. 3, pp. 303-319, 2009.\r\n[20] T. P. Wright, Factors affecting the cost of airplanes, Journal of\r\nAeronautical Sciences, vol. 3, no. 4, pp. 122-128, 1936.<\/p>\r\n","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 79, 2013"}