In an offshore wind farm, the turbines are connected to a transformer by cable routes which cannot cross each other. Finding the minimum cost array cable layout thus amounts to a vehicle routing problem with the additional constraints that the routes must be embedded in the plane. For this problem, both exact and heuristic methods are of interest. We optimize cable layouts for real-world offsho...

Ever since scientists discovered that conventional silicon-based computers have physical upper limits, they have been searching for alternative media with which to solve computational problems. That search has led them, among other places, to deoxyribonucleic acid (DNA). Since Adleman’s pioneering investment, various researches have been made in DNA computing theoretically and experimentally. H...

[1] Shear-wave splitting observations from many subduction zones show complex patterns of seismic anisotropy that commonly have trench-parallel fast directions. Three-dimensional flow may give rise to trench-parallel stretching and provide an explanation for these patterns of seismic anisotropy. Along-strike variations in slab geometry produce trench-parallel pressure gradients and are therefor...

This paper describes the analysis results of the trench oxide of power devices by means of light emission analysis. Localized electron injection was observed at the upper corners of the trench edges. In addition, it was found that the electron injection into the edge of trench oxide was consistently larger than that into the center of the trench oxide during the electrical stressing. From these...

The problem of electric field grading in cable components, having both theoretical and technological implications, can be framed in more general topic of field control in HV equipment. A solution may be obtained by two possible approaches: using geometric field control [11, 13, 14, 15, 17, 18], in which the field distribution depends on the arrangement of main and auxiliary electrodes or using ...

In contrast to typical planning problems, automated earthmoving operations such as digging a trench or leveling a mound of soil pose some additional challenges. First, soil is diffuse and therefore a unique description of the world requires a very large number of variables. Second, the interaction between the robot and the world is very complex to the point that it is not possible to accurately...

This paper first presents a comprehensive comparison of the established radio telescope near Arecibo, Puerto Rico vs. the designed Chinese Five-hundred meter Aperture Spherical Telescope (FAST) that includes a six-degrees-of-freedom (dof) underconstrained cable-suspended robot to position and orient its focus cabin. Then a straight-line cable model is presented for the FAST robot kinematics and...

The following problem appears in robotics. A number of small, circular robots live in a common planar workspace. Each is attached by a exible cable of nite length to a point on the boundary of this workspace. Each robot has a target point in the workspace it must reach. When a robot has reached its target, its cable will have been dragged out into the workspace and possibly pushed and bent by o...

The following problem appears in robotics. A number of small, circular robots live in a common planar workspace. Each is attached by a exible cable of nite length to a point on the boundary of this workspace. Each robot has a target point in the workspace it must reach. When a robot has reached its target, its cable will have been dragged out into the workspace and possibly pushed and bent by o...