This study presents a model based on fuzzy logic with two inputs: idea units and main ideas. The inputs were gained by scoring reading comprehension of 19 MA students at Shiraz University who were each given three different genres. The data were fed into the fuzzy system and fuzzy scores were obtained as the output. First, the same participants' understandings across different genres and then, different participants' understandings across the same genre were compared. And finally, the number of idea units referred to by participants was calculated to see which idea units were problematic. The results of comparing fuzzy scores and scores resulting from idea units indicated that fuzzy scores were fairer, and more accurate. The results of paired t-test showed that the narrative genre was easier than the descriptive and argumentative genres. Also, the results showed that the same participants had different degrees of understanding across genres and different participants had different degrees of understanding in the same genre.

To date, the use of three key aspects together has received little attention in studies on sustainable business models (SBMs). These aspects are a) the qualitative design of SBMs based on a valid sustainable business model canvas presented so far, b) the dynamic quantitative analysis of the designed SBMs, and c) the identification of appropriate business policies for different future scenarios, not just for one. Therefore, in this research, an attempt is made to study all three aspects by proposing a new practical framework based on one of the latest SBMs, called value triangular business model canvas (VTBMC), and system dynamics. To evaluate the proposed framework in the real world, it was implemented as a case study in Farassan Industrial and Manufacturing Company, one of the companies producing composite pipes. The results showed that the proposed framework helps business owners and managers identify the proper policies to achieve their key business objectives in the future under critical uncertainties and also create appropriate balanced values for a wide range of stakeholders, rather than just for shareholders.