Amir Hossein Ghapanchi

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Open source software (OSS) products have been widely adopted by commercial as well as government organizations. However, despite their increased adoption, many OSS projects still fail in responding to users' quality needs such as resolving software defects. Hence, this paper investigates the responsiveness of OSS projects to users' needs in terms of(More)
BACKGROUND A three-dimensional virtual world (3DVW) is a computer-simulated electronic 3D virtual environment that users can explore, inhabit, communicate, and interact with via avatars, which are graphical representations of the users. Since the early 2000s, 3DVWs have emerged as a technology that has much to offer the health care sector. OBJECTIVE The(More)
—Unlike closed source software development, open source software (OSS) projects are not commonly driven by direct profit and do not offer developers monetary incentives. Instead, OSS development relies on volunteer developers and voluntary contributions from the user community. Thus, attracting voluntary user contributions to OSS projects is a challenging(More)
  • Afrooz Purarjomandlangrudi, Amir Hossein Ghapanchi, Mohammad Esmalifalak, A H Ghapanchi, Mesmalifalak Uh Edu, M Esmalifalak
  • 2015
Rolling-element bearing failures are the most frequent problems in rotating machinery, which can be catastrophic and cause major downtime. Hence, providing advance failure warning and precise fault detection in such components are pivotal and cost-effective. The vast majority of past research has focused on signal processing and spectral analysis for fault(More)