This paper presents a low-cost, single-cycle floating-point unit developed for digital audio processing applications. In the unit, the serial steps of floating-point operations are paralleled to reduce critical path delay, and hardware resources are shared with the integer datapath to minimize area overhead. Its area overhead is as small as 38% of the fixed-point datapath, and the critical path...

This research applies the Collective Specialization NeuroEvolution (CONE) method to the problem of evolving neural controllers in a simulated multi-robot system. The multi-robot system consists of multiple pursuer (predator) robots, and a single evader (prey) robot. The CONE method is designed to facilitate behavioral specialization in order to increase task performance in collective behavior s...

Nondestructive neutron activation analysis was performed on the nickel purified by floating zone-refining and anion exchange. It is found that floating zone-refining in vacuum is effective to remove Na, Sc, Cr, Zn, As, Ag, Sb and Hg through vaporization in addition to elimination of Se, Sb, Ta, Sm and Tb through segregation. Anion exchange method is also effective to separate Fe, Co, Zn, Mo, Hg...

This paper presents a method to approach the implementation of a highly accurate logarithmic converter that operates with floating point numbers. For consistency purposes, it was necessary to adopt a standard to represent all floating point number. Hence, the IEEE Standard for Binary Floating-Point Arithmetic (IEEE 754) was the one selected. This logarithmic converter is based on Mitchell’s alg...

We propose a method that combines single-trial classification and channel/basis selection in a single regularized empirical risk minimization problem. We use the linear sum of the Euclidian norms of the columns of the coefficient matrix as the regularizer. This penalty enables us to select rows and columns of the coefficient matrix, which correspond to a subset of the channels or a subset of ba...

The specificity of cone inputs to ganglion cells has implications for the development of retinal connections and the nature of information transmitted to higher areas of the brain. We introduce a rapid and precise method for measuring signs and magnitudes of cone inputs to visual neurons. Colors of stimuli are modulated around circumferences of three color planes in clockwise and counterclockwi...

Offshore winds are generally stronger and more consistent than winds on land, making the offshore environment attractive for wind energy development. A large part of the offshore wind resource is however located in deep water, where floating turbines are the only economical way of harvesting the energy. The design of offshore floating wind turbines relies on the use of modeling tools that can s...

The cut polytope P. is the convex hull of the incidence vectors of the cuts (i.e. complete bipartite subgraphs) of the complete graph on n nodes. A well known class of facets of P. arises from the triangle inequalities: x o + Xlk + X~k < 2 and xlj -x~k -xjk < 0 for 1 < i, j, k < n. Hence, the metric polytope M., defined as the solution set of the triangle inequalities, is a relaxation of P.. We...

Due to the potential of compact imaging systems with magnified spatial resolution and contrast, cone-beam x-ray differential phase-contrast computed tomography (DPC-CT) has attracted significant interest. The current proposed FDK reconstruction algorithm with the Hilbert imaginary filter will induce severe cone-beam artifacts when the cone-beam angle becomes large. In this paper, we propose an ...

Abstract In this paper, we present an inexact multiblock alternating direction method for the point-contact friction model of force-optimization problem (FOP). The friction-cone constraints FOP are reformulated as Cartesian product circular cones. We focus on convex quadratic circular-cone programming FOP, which is exact cone-programming model. Coupled with separable objective function, recast ...