Introduction: The Stardust mission to comet Wild 2 has provided numerous extraterrestrial particles and resulting 'tracks' of finer particles in melted silica aerogel [1]. We have utilized a combination of Laser Confocal Scanning Microscopy (LCSM) and Synchrotron X-Ray Fluorescence (XRF) to characterize a variety of whole tracks both morphologically and chemically, all in 3-dimensions [2]. The ...

This paper aims at presenting our method to generate drum tracks to accompany guitar tracks. Our approach was to work on songs in the Midi format, separate them into several segments and then design our own features for the input guitar tracks as well as for the output drum tracks. We performed clustering algorithms (K-means, mixture of Gaussian, DBSCAN) as well as K-nn to group similar guitar ...

Figure 1: Conventional non-shingled writing, on the left, writes data in non-overlapping tracks, width w, with non-magnetized “guard regions”, width g, between tracks. Shingled writing, on the right, leaves residual tracks, width r, less than the width of the written track, width w’, before it writes the next track, largely overlapping adjacent tracks. This increases tracks per inch, increasing...

Two printing methods, extrusion and inkjet, are used to deposit tracks of PEDOT/PSS conducting polymer onto biopolymer films with a view to prepare implantable tissue mimics containing electronic devices. Extruded tracks offer lower printing resolution, but better electrical characteristics compared to inkjet printed tracks. The biopolymer–ink interaction results in narrower printed tracks comp...

Entry of sand dunes into the railway tracks can result in sand deposition on tracks, railway obstruction, derailment, damage to track flexibility, and impairment of electrical signs and rail fleet. It is aimed to investigate the strategies and solutions for reducing sand aggregation on railway tracks (including construction of sand passage canals through embankments and modification of the geom...

This paper develops methods for associating two sets of sensor tracks in the presence of missing tracks and translation bias. Key results include (1) Extension of the Maximum A Posteriori Probability method of matching tracks to use feature information as well as kinematic information; (2) translation bias removal techniques that are computationally tractable for large numbers of tracks, and ef...

Most individuals prefer bicycling separated from motor traffic. However, cycle tracks (physically separated bicycle-exclusive paths along roads, as found in The Netherlands) are discouraged in the USA by engineering guidance that suggests that facilities such as cycle tracks are more dangerous than the street. The objective of this study conducted in Montreal (with a longstanding network of cyc...

Cancer cells straighten out W hen a cancer cell hangs a left, it needs the protein cofi lin. As Sidani et al. report, cofi lin helps wandering cancer cells change course by enabling them to turn. Cofi lin is important for cells on the go. As a cell crawls, actin fi bers at its front edge polymerize, pushing the membrane forward. Cofi lin promotes the elongation of these fi bers by breaking them...