Tires represent a critical spare part in mines. There is a shortage of medium and large tires. In addition, with increased mining activities and the creation of new mines, the demand for tires has increased significantly. Thus, it is particularly important for mining engineers to identify tire characteristics and correctly manage the spare part inventory. Spare parts management is critical from...

background : if an institute is looking for improvement of its learning environment, a reliable and valid assessment tool is needed for measurement of the educational environment .the dundee ready educational environment measure (dreem) has been used in various studies to evaluate the educational environment. however, psychometric evaluations of the instrument seem necessary, for all known vers...

tires represent a critical spare part in mines. there is a shortage of medium and large tires. in addition, with increased mining activities and the creation of new mines, the demand for tires has increased significantly. thus, it is particularly important for mining engineers to identify tire characteristics and correctly manage the spare part inventory. spare parts management is critical from...

Abstract Introduction More than a third of US children do not receive adequate sleep. Earlier bedtimes, consistent bedtime routines, and good sleep hygiene help to support more Our previous work has shown that during summer, 5-8-year-old go bed later obtain less compared the school year. We hypothesized year-summer differences in family environment would explain children’s timing these periods....

We provide an existence proof for Generalized Marginal Cost Pricing with given tax-subsidy rules. The novelty is that our approach allows for economic environments where all the generalized marginal cost pricing equilibria are inefficient in the aggregate. An example is recalled in order to suggest how non-pathological these environments are. Journal of Economic Literature Classification Number...