Research over the past several decades has elucidated some of the mechanisms behind high speed, highly efficient and robust locomotion in insects such as cockroaches. Roboticists have used this information to create biologically-inspired machines capable of running, jumping, and climbing robustly over a variety of terrains. To date, little work has been done to develop an at-scale insect-inspir...

This paper is concerned with the stochastic comparison of two individual risk models for homogeneous portfolios with different claim size distributions. It is shown that a Lorenz order between the claim sizes, or a hamr-order if the claim sizes are NBUE, are transferred to the corresponding individual risk models. © 2001 Elsevier Science B.V. All rights reserved.

Heat-Assisted Magnetic Recording: Fundamental Limits to Inverse Electromagnetic Design by Samarth Bhargava Doctor of Philosophy in Engineering – Electrical Engineering and Computer Sciences University of California, Berkeley Professor Eli Yablonovitch, Chair In this dissertation, we address the burgeoning fields of diffractive optics, metals-optics and plasmonics, and computational inverse prob...

We investigate the dynamical switching process of Heat Assisted Magnetic Recording (HAMR) by numerical calculations probability using an atomistic model. Calculations show that at elevated write temperature HAMR there is a loss information arising from ’backswitching’: thermodynamic phenomenon which comes into play when ratio Zeeman energy to thermal insufficiently large completely stabilise sw...

Computational studies that use block-structured adaptive mesh refinement (AMR) approaches suffer from unnecessarily high resolution in regions adjacent to important solution features. This deficiency limits the performance of AMR codes. In this work a novel hybrid multiresolution (HAMR) approach AMR-based calculations is introduced address issue. The (MR) smoothness indicators are used identify...

Highly capable multiple robot architectures often resort to micromanagement to provide enhanced cooperative abilities, sacrificing individual autonomy. Conversely, multi-robot architectures that maintain individual autonomy are often limited in their cooperative abilities. This article presents a modified three layer architecture that solves both of these issues. The addition of a Coordinator l...

We employ an atomistic model using a nearest-neighbor Heisenberg Hamiltonian exchange to study computationally the dependence of Curie temperature $L{1}_{0}$-FePt on finite-size and surface effects in heat-assisted magnetic recording (HAMR) media. demonstrate existence size threshold at 3.5 nm below which impact starts permeate into center grains contributes reduction temperature. find correlat...

Metal nitrides have been proposed to replace noble metals in plasmonics for some specific applications. In particular, while titanium nitride (TiN) and zirconium nitride (ZrN) possess localized plasmon resonances very similar to gold in magnitude and wavelength, they benefit from a much higher sustainability to temperature. For this reason, they are foreseen as ideal candidates for applications...