Hopping all over
نویسندگان
چکیده
منابع مشابه
Hopping over a heat barrier.
We analyze diffusion in a finite domain with a position-dependent diffusion coefficient in terms of a stochastic hopping process. Via a coordinate transformation, we map the original system onto a problem with constant diffusion but nontrivial potential. In this way we show that a regime with enhanced diffusion acts as a potential barrier. We compute first-passage time distributions, hopping ra...
متن کاملSimulating the All-Order Hopping Expansion II: Wilson Fermions
We investigate the extension of the Prokof’ev-Svistunov worm algorithm to Wilson lattice fermions in an external scalar field. We effectively simulate by Monte Carlo the graphs contributing to the hopping expansion of the twopoint function on a finite lattice to arbitrary order. Tests are conducted for a constant background field i. e. free fermions at some mass. For the method introduced here ...
متن کاملPacing Spikes All Over
Ventricular safety pacing (VSP) is used to avoid cross talk by delivering ventricular stimulus shortly after an atrial-paced event if ventricular-sensed event occurs. Although VSP is a protective feature that exists for decades in different pacing devices, there are some reports of unfavorable outcomes of this algorithm. More so, health care providers sometimes face difficulties in interpreting...
متن کاملBristling all over
They are runners-up in the Current Biology photomicrography competition. During normal development of the nervous system in Drosophila, a process called 'lateral inhibition' ensures that only a single neural precursor is selected from a group of initially equipotent cells. Where lateral inhibition fails, excess neural cells develop, as shown in the image above, where a 'tuft' of thorn-like bris...
متن کاملCollision-based energetic comparison of rolling and hopping over obstacles
Locomotion of machines and robots operating in rough terrain is strongly influenced by the mechanics of the ground-machine interactions. A rolling wheel in terrain with obstacles is subject to collisional energy losses, which is governed by mechanics comparable to hopping or walking locomotion. Here we investigate the energetic cost associated with overcoming an obstacle for rolling and hopping...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Reviews Genetics
سال: 2002
ISSN: 1471-0056,1471-0064
DOI: 10.1038/nrg895