Accepted: 28 February 2016 Achieving competitive advantage enables an organization to create a defensible position against its competitors. It also allows organizations to differentiate themselves from competitors. This study aims to investigate impact of knowledge management practices on supply chain quality management and competitive advantage in Alyaf Company, Iran. This research is functional in purpose and data gathering and data analysis is descriptive-correlation. The statistical population is consists of 25 company executives and experts in the supply chain of Alyaf Company; opinions of 68 of its members were used as a selective sample identified by simple random sampling method. Primary data was collected through questionnaire and structural equation modeling was used to assess relationships between variables. The results of structural equation modeling show a positive and significant causal relationship between knowledge management practices and supply chain quality management. Direct relationship between knowledge management and competitive advantage was not confirmed but the relationship between these two variables was confirmed indirectly.

Introduction: Diabetes mellitus is one of the most common metabolic diseases that is associated with many complications. Type 1 diabetes is an autoimmune disease caused by a lack of insulin production due to high blood glucose levels. It is the third most severe and chronic childhood illness, affecting approximately 15 million children worldwide. Given the importance of controlling type 1 diabetes, especially in children, in this study we aimed to examine the status of diabetes control in children 3 to 18 with type 1 diabetes. Methods: This study was a retrospective analytical cross-sectional study. The study population included 121 children aged 3-18 years with type 1 diabetes referred to Yazd Diabetes Center in 2018 to 2019. The information, including age, sex, BMI, patient maturity stage, duration of diabetes, mean A1C, daily insulin dose, number of blood glucose measurements per day and number of DKA attacks were extracted. The collected data were entered into SPSS version 16, using statistical tests were analyzed. Results: The results showed that the mean age of participants was 12.92± 3.96 years and the mean of A1c in patients was 8.63 ± 1.94. The results of our study on diabetes control status in the studied patients showed that 38.8% of patients had partial diabetes control status, 32.2% had good diabetes control status and 28.9% had poor diabetes control status. In addition, according to the results of the study, there was no statistically significant difference was found  among the frequency distribution of diabetes control status in terms of variables of puberty stage (p = 0.228), BMI (p = 0.508), age (p = 0.275), daily dose of bisal / bolus insulin (p = 0.479), dose Daily NPH / regular insulin (p = 0.386), number of blood glucose checks (p = 0.090), number of hospitalizations due to DKA (p = 0.539), duration of diabetes (p = 0.093) and gender (p = 0.263). . Conclusion: According to the results of the study, it can be concluded that none of the studied variables affect the control status of diabetes in children aged 3-18 years with type 1 diabetes.