Price changes of the Chinese yuan/US dollar rate are found to display a Sierpinski triangle in an Iterative Function System clumpiness test. This fractal structure commonly emerges in “the chaos game”, where randomness coexists with deterministic rules. We show that a threshold model with four states, two deterministic and two stochastic is able to replicate the properties of the yuan/dollar re...

Computing Fast Fourier Transforms (FFTs) is notoriously difficult on conventional general-purpose architectures because FFTs require high memory bandwidth and strided memory accesses. Since FFTs are important in signal processing, several DSPs have hardware support for performing FFTs; moreover, some DSPs are designed solely for the purpose of computing FFTs and related transforms. In this pape...

The NOEMA interferometer and the IRAM 30-meter telescope offer a range of outstanding capabilities that will continue to be expanded as part IRAM’s long-term development strategy.

The crystal structure of Elba dachiardite shows an unusual rotation of two tetrahedra around one edge. This rotation gives rise to two configurations which have the same frequency thus maintaining the statistical symmetry C2/m. The most probable distribution of ions indicates the presence of two cation sites and five water molecules. One cation site is at the crossing of the two systems of chan...

The Computer Vision group at U.C. Berkeley recently developed a novel approach to image segmentation, called the Normalized Cuts algorithm. The current implementation of the algorithm has an execution time on the order of minutes for medium-sized images running on conventional scalar machines. This paper explores the current bottlenecks and seeks to maximize the performance by porting the algor...

We present high angular resolution (∼ 1 and 0.6) mm-interferometric observations of the CO(1− 0) and CO(2− 1) line emission in the central 300 pc of the late-type spiral galaxy NGC6946. The data, obtained with the IRAM Plateau de Bure Interferometer (PdBI), allow the first detection of a molecular gas spiral in the inner ∼ 10 (270 pc) with a large concentration of molecular Based on observation...

The scaling of the probability distribution of the Sao Paulo Stock Exchange index is shown to be described by a Levy stable stochastic process for the modal region of the distribution. Data refer to daily records for the 30−year period 1968−1998. The truncated Levy process is characterized by a scaling index of 1.66. Scaling power laws are also shown to be present in the mean and standard devia...

Bum-Sik Kim, Yun Ho Choi , and Lee-Sup Kim Korea Advance Institute of Science and Technology E-mail:[email protected] *SAMSUNG Electronics Co., LTD. E-mail:[email protected] Abstract There are strong demands for high speed and low power to realize systems on silicon. However, the current circuit design technologies for MPU and DRAM are based on their own optimized process technolog...

This paper presents a specific contracting algorithm that contributes to the process of distributed planning and resource allocation in competitive, semi-trusted environments. The presented contraction algorithm is based on incrementally refined acquaintance models (IRAM) of the actor that provide the right set of approximate knowledge needed for appropriate task decomposition and delegation. T...

Two trends call into question the current practice of microprocessors and DRAMs being fabricated as different chips on different fab lines: 1) the gap between processor and DRAM speed is growing at 50% per year; and 2) the size and organization of memory on a single DRAM chip is becoming awkward to use in a system, yet size is growing at 60% per year. Intelligent RAM, or IRAM, merges processing...