background: coordination is a critical factor in successful organization and appropriate response to disasters. in this regard, a centralized coordination mechanism is the first step towards an effective, efficient, and sustainable response in order to be ensured of the short- and long-term recovery. thus, this study aimed to identify and prioritize the barriers and facilitators of coordination...

We report up-converted photoluminescence in a structure with InAs quantum dots embedded in GaAs. An efficient emission from the GaAs barrier is observed with resonant excitation of both the dots and the wetting layer. The intensity of the up-converted luminescence is found to increase superlinearly with the excitation density. The results suggest that the observed effect is due to a two-step tw...

We present a solution for variational motion design of a rigid body in the presence of rigid obstacles of arbitrary shape that fully employs the available degrees of freedom in the design process. This question remained open in our paper on energyminimizing splines in manifolds (Hofer and Pottmann, 2004). The main idea is to reduce the problem to a curve design task on a suitable barrier surfac...

Energy consumption is a fundamental barrier in taking full advantage of today and future semiconductor manufacturing technologies. This paper presents our recent research activities and results on estimating and reducing energy consumption in nanometer technology system LSIs. This includes techniques and tools for (i) estimating instantaneous energy consumption of embedded processors during an ...

Abstract We propose that the asymmetry-induced tunneling electroresistance (TER) effect in a ferroelectric tunnel junction (FTJ) could be improved by integrating polarization-controlled resonant band. Using first-principles calculations and quantum-mechanical model, we studied an asymmetric FTJ SrRuO 3 /BaTiO /SrTiO /SrRuO . The band is integrated into this two atomic layers of BaSnO embedded b...

The current through a resonant tunneling diode consisting of Si quantum dots embedded in a SiO2 matrix is calculated and the resonance broadening effects caused by distributions of quantum dot diameter and asymmetric barrier thicknesses are simulated. It is demonstrated that a size distribution is extremly critical for the use of these structures as selective energy contacts for hot carrier sol...

this field study was conducted  to investigate barriers to applying principles of management in wards of tehran university on medical science hospitals: head nurses' viewpoints .75 hednurses who  were working  in selected hospitals affiliated to tehran university of medical sciences. the data collection tool was a questionnaire that  it,s validity and reliability was obtained using content...

Electrical control on interfaces is one of the key approaches to harvest advanced functionalities in modern electronic devices. In this work, it proposed and demonstrated that a “battery-like” tunnel junction structure can be embedded with added via reversible lithium-ion motion. model system FeCo/FeCoOx/LiF/FeCo magnetic junctions, ultrathin LiF barrier makes strong electric fields possible un...