Late identification of performance problems can lead to significant additional development costs. Hence, it is necessary to address performance in several development phases by performing a performance engineering process. We show that Model-Driven Engineering (MDE) specifics can be utilised for performance engineering. Therefore, we propose a process combining MDE and performance engineering c...

BACKGROUND Available alfentanil pharmacokinetic (PK) sets for target-controlled infusion (TCI) were derived from populations with normal BMI. The performance and accuracy of the models devised by Maitre and colleagues and Scott and colleagues were evaluated in a population including morbidly obese patients. METHODS Alfentanil TCI using Maitre and colleagues' model was administered to 10 obese...

INTRODUCTION Polymer brackets still have some disadvantages because of decreased wear resistance and hardness. The aim of this study was to investigate the mechanical properties of alternative bracket polymers; urethane-dimethacrylate, high-density polyethylene, and an experimental bracket polymer (EBP) consisting of polyethylene and a copolymer were tested. Polycarbonate and polyoxymethylene b...

in this article, the crystallization of polyethylene is investigated by the modified weighted density approximation. also, a direct correlation function of polyethylene based on the rism theory is used. the free energy of a polyethylene is calculated using the density functional theory. the crystallization and also the solid and liquid densities of polyethylene are calculated and compared with ...

      In this article, the crystallization of polyethylene is investigated by the modified weighted density approximation. Also, a direct correlation function of polyethylene based on the RISM theory is used. The free energy of a polyethylene is calculated using the density functional theory. The crystallization and also the solid and liquid densities of polyethylene are calculated and compared...

Tissue-engineered cartilage may have potential for the construction of clinical implants for the treatment of congenital deformities or post-traumatic defects. However, the lack of seed cells is a challenge, as is the maintenance of ideal shape and size. We have used bone marrow stromal cells (BMSCs) and a pre-shaped polyglycolic acid (PGA)-porous high-density polyethylene composite scaffold to...

We gained experiences in implementing rule based model transformations within an industrial case study called Model-Driven Performance Engineering (MDPE). Similar to other MDE scenarios, these transformations have been implemented via multiple transformation steps interconnected in an automated model transformation chain. In this short paper, we use the MDPE case study to demonstrate reasons fo...

to determine the effects of priming and planting density on improvement of morphological and physiological traits of the two hybrid corns sc (s.c. 704) under double cropping in sari, a split plot experiment as randomized complete block design with four replications was conducted in 2010. treatments included two densities of 80 and 100 thousand plants per hectare as the first factor and osmoprim...