6,875 research outputs found
Reversible signal transmission in an active mechanical metamaterial
Mechanical metamaterials are designed to enable unique functionalities, but
are typically limited by an initial energy state and require an independent
energy input to function repeatedly. Our study introduces a theoretical active
mechanical metamaterial that incorporates a biological reaction mechanism to
overcome this key limitation of passive metamaterials. Our material allows for
reversible mechanical signal transmission, where energy is reintroduced by the
biologically motivated reaction mechanism. By analysing a coarse grained
continuous analogue of the discrete model, we find that signals can be
propagated through the material by a travelling wave. Analysis of the continuum
model provides the region of the parameter space that allows signal
transmission, and reveals similarities with the well-known FitzHugh-Nagumo
system. We also find explicit formulae that approximate the effect of the
timescale of the reaction mechanism on the signal transmission speed, which is
essential for controlling the material.Comment: 20 pages, 7 figure
Averages of shifted convolutions of
We investigate the first and second moments of shifted convolutions of the
generalised divisor function .Comment: 22 page
On the Contour- More Corn, More Beans
One way that Iowa farmers who have sloping land can produce more per acre and per man is to plant their crops on the contour. We have thought this is true, but during the past year the Iowa Station and the Soil Conservation Service in cooperation with Iowa farmers conducted some experiments to try to get some measure of how m u ch increase one could expect by planting corn and soybeans on the contour as compared with planting up and down hill
Warsaw from the French Perspective: A Comparative Study of Liability Limits under the Warsaw Convention
The Warsaw Convention, now over 45 years old, was originally designed to aid the growth of a new, undeveloped, and somewhat perplexing commercial enterprise--the international air transportation industry. Unfortunately, the drafters of the Convention took a narrow, and perhaps ill-advised, view of regulation of liability. They limited the carriers\u27 liability for damage to an amount that could easily have been foreseen to be unworkable and they defined the concept of fault in ambiguous terms. While this fledgling attempt to codify an area of private international law was meant to provide a uniformity of terms that would be workable in a variety of legal systems, the result has been an increasing breakdown of the Convention\u27s concepts in the courts of the ratifying states.
This note will analyze one of the inadequacies of the Warsaw Convention--the limitation of liability for passenger injury--on a comparative basis. The analysis will first give a brief historical background of the Warsaw Convention. Second, the basic nature of French tort concepts in relation to carrier liability and the specific application of those concepts to airline cases in France will be discussed. Finally, a brief overview of the standards employed in England, Germany, and the Soviet Union will be given
Hold Topsoil-Contour!
For the past several years we have been calling attention to the increase in yields obtained with corn, soybeans and other crops planted on the contour on sloping land as compared with yields from adjacent areas farmed the up-and-down hill way
Should Judges Have a Duty of Tech Competence?
In an era in which lawyers are increasingly held to a higher standard of “tech competence” in their representation of clients, shouldn’t we similarly require judges to be conversant in relevant technology? Using real world examples of judicial missteps with or refusal to use technology, and drawn from actual cases and judicial disciplinary proceedings, this Article argues that in today’s Digital Age, judicial technological competence is necessary. At a time when courts themselves have proven vulnerable to cyberattacks, and when courts routinely tackle technology related issues like data privacy and the admissibility of digital evidence, Luddite judges are relics that the future—not to mention the present—can ill afford
- …