Dynamic structure function in−43He mixtures

Dynamic structure function in 3He-4He mixtures.

High-momentum dynamic structure function of liquid He-He mixtures: A microscopic approach

The high-momentum dynamic structure function of liquid He-He mixtures has been studied introducing final-state effects. Corrections to the impulse approximation have been included using a generalized GerschRodriguez theory that properly takes into account the Fermi statistics of He atoms. The microscopic inputs, as the momentum distributions and the two-body density matrices, correspond to a va...

Performance Evaluation of Dynamic Modulus Predictive Models for Asphalt Mixtures

Dynamic modulus characterizes the viscoelastic behavior of asphalt materials and is the most important input parameter for design and rehabilitation of flexible pavements using Mechanistic–Empirical Pavement Design Guide (MEPDG). Laboratory determination of dynamic modulus is very expensive and time consuming. To overcome this challenge, several predictive models were developed to determine dyn...

Malmquist Productivity Index with Dynamic Network Structure

Data envelopment analysis (DEA) measures the relative efficiency of decision making units (DMUs) with multiple inputs and multiple outputs. DEA-based Malmquist productivity index measures the productivity change over time. We propose a dynamic DEA model involving network structure in each period within the framework a DEA. We have previously published the network DEA (NDEA) and the dynamic DEA ...

Modeling Dynamic Production Systems with Network Structure

This paper deals with the problem of optimizing two-stage structure decision making units (DMUs) where the activity and the performance of two-stage DMU in one period effect on its efficiency in the next period. To evaluate such systems the effect of activities in one period on ones in the next term must be considered. To do so, we propose a dynamic DEA approach to measure the performance of su...