Requirements changes are sometimes pointed out as being one of the causes for project failure. Our solution to cope with this problem is to plan and manage requirements changes strategically. This paper introduces the PRINCE model that consists of 3+1 types of requirements elicitation processes based on the time of the maturation of the requirements elicitation activity. To explain the model, w...

Optimization of process parameter is one of the ideal goals in laser sintering. The results of this process were measured as output parameters like: density, micro hardening, macro hardening, tension, roughness, stiffness, balling. In this paper, the influence of input parameter such as laser power, scan speed, material powder and etc are surveyed on output parameter like balling affection and ...

Optimization of process parameter is one of the ideal goals in laser sintering. The results of this process were measured as output parameters like: density, micro hardening, macro hardening, tension, roughness, stiffness, balling. In this paper, the influence of input parameter such as laser power, scan speed, material powder and etc are surveyed on output parameter like balling affection and ...

0377-2217/$ see front matter 2013 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.ejor.2013.11.016 ⇑ Corresponding author. Tel.: +1 512 471 3322. E-mail addresses: [email protected] (T. Kirschenmann), elmira@mail. utexas.edu (E. Popova), [email protected] (P. Damien), hansont@ stat.sc.edu (T. Hanson). Thomas Kirschenmann , Elmira Popova , Paul Damien c,⇑, Tim H...