data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Background and Objective: Research evidence show that specific parenting styles are as risk factors in evolution of maladaptive perfectionism in students. On the other hand, perfectionism is affected by biological motivational personality systems. This study investigated the role of behavioral-brain systems and perceived parenting styles in Students’ perfectionism. Materials and Methods: The...

insurers have in the past few decades faced longevity risks - the risk that annuitants survive more than expected - and therefore need a new approach to manage this new risk. in this dissertation we survey methods that hedge longevity risks. these methods use securitization to manage risk, so using modern financial and insurance pricing models, especially wang transform and actuarial concepts, ...

fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...

the current study examined iranian undergraduate efl students’ willingness to communicate with regard to their vocabulary knowledge. in general, participants were somewhat willing to communicate in english. the total mean score of 730 university students’ perception of willing to communicate was 83.53 out of 135. results, regarding four parts of willingness to communicate, revealed that part...

Objectives Machiavellianism, Narcissism and Psychopathy are often referred to as the dark triad of personality. This study explored the relationships of those personalities with three factor personality models. Methods The current study was conducted in correlational descriptive research context. A group of 203 normal participants from Tabriz Payame noor university students answered to MACH-IV...