A numerical method for passive scalar and self-advection dynamics, Lagrangian rearrangement, is proposed. This fully Lagrangian advection algorithm introduces no artificial numerical dissipation or interpolation of parcel values. In the zero-viscosity limit, it preserves all of the Casimir invariants associated with parcel rearrangement. In the twodimensional case presented here, these invarian...

The Modular Distributed Manipulator System (MDMS) is a novel materials handling system which is a xed array of actuated wheels capable of inducing arbitrary motions in the plane. This work develops control laws for transporting and manipulating macroscopic-scale objects (parcels) that rest on the array. The dynamics of parcel transport and manipulation lead to the necessary understanding of suc...

conclusions the quality gap in the services provided by maternity units showed that these units are not able to meet pregnant women’s expectations completely. the negative quality gaps can be used as a guideline to improve the maternal health care quality and reduce maternal mortality, particularly in high-risk women such as those living in rural areas. results there was a negative gap in all d...

Scope and Purpose. Inspired by the findings about neurons, a n d especially by some effective training procedures found in the late 70's, neural networks have seen a resurgence in the research community. I t s philosophy assumes simple but massive interconnected processing uni t s as the basic structure for information processing. Problems that a r e difficult to tackle with conventional symbol...

The growth of internet availability and rise of affordable express parcel delivery services for the general public in China has greatly impacted people’s consumer behavior. More and more consumers have joined in on the growing market of online shopping and e-commerce. One group of these consumers prefer searching through various websites, combing through different products and prices, then deci...

Abstract Background The present crisis offers a unique opportunity to better understanding the specific contribution of health workforce system resilience, and more specifically adaptive, absorptive transformative capacities that influence how systems respond COVID-19 pandemic. Methods study examined different in context as central prerequisite resilience. We compared policies services response...

This paper deals with a hub location-routing problem (HLRP) which integrates the hub location problem (HLP) and the multi-hub vehicle routing problem (MH-VRP) in parcel delivery service. The HLRP is very difficult to be solved since it is composed of two NP-hard problems, the HLP and the MH-VRP. To solve these problems simultaneously we present a novel solution framework which divides the probl...