The phrase "imperfect quality" is correct and can be used in written English.
It is often used to describe something that is not perfect or flawless. Example: The painting was beautiful, but its imperfect quality was evident in the small smudge at the corner of the canvas.
It's mostly from Fuller, I suspect, that Godard acquired the central premise of his work: that a film is not a closed, perfect, self-contained object, but something necessarily open, messy and incomplete, successful to the extent that its unfinished, imperfect quality engages and challenges a viewer.
This paper studies a fuzzy EOQ engineering problem with imperfect quality and shortages.
Moreover, imperfect quality products can be reworked and repaired in some circumstances.
One of the extension types of this model deals with imperfect quality products.
They assumed that imperfect quality items are withdrawn from inventory and sold at a discounted price.
It is common to all and above industries that a certain percent of produced/ordered products are of imperfect quality.
Yoo et al. (2009) proposed a profit-maximizing EPQ model that incorporates both imperfect production quality and two-way imperfect inspection.
In this paper, we examine the network lifetime of several localized tree construction schemes by incorporating the communication overhead due to imperfect link quality.
In the third paper, "Determining localized tree construction schemes based on sensor network lifetime," Lee et al. study the network lifetime of different localized data gathering tree formation algorithms by considering the communication overhead due to imperfect link quality.
In the case of fixed node density deployments, the careful adjustment of link threshold will optimally balance communication overhead driven by imperfect link quality and communication load sharing by more nodes in a larger radio range.
In this article, a hybrid multi-user OFDMA scheme which considers different user demands regarding channel access and user-specific imperfect channel quality information (CQI) is analytically described and evaluated.
