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Modeling acoustical behavior in a room is complicated and computationally intense. Many methods have been proposed to analyze the distribution of sound field by using computer simulation. However, the procedure is time-consuming with sound space increasing. In this paper, a hardware solution based on Digital Huygens' Model (DHM) and Field Programmable Gate Array (FPGA) technology is proposed to simulate...
The use of low-cost multi-core processors that target small-scale parallelism of several or several tens of processing units has recently spread to general-purpose personal computers. As part of this trend, research on converting evolutionary computation to parallel processing on multi-core processors has begun. In our research, we place importance on proposing multi-core processor architectures from...
This paper proposes a designing method of a restart procedure speed-sensorless vector controlled induction generators for wind power generation systems. A designing method for a restart procedure is mainly discussed in this paper. Transfer function over the input and the output is linearized by using feedback for simple designing control system. This method is experimentally verified by a test set.
Recent developments in medical imaging technology have enabled us to acquire high-resolution datasets within a few minutes. It is important for a physician to recognize three-dimensional structure of vessels prior to any vascular treatments. However, extracting this structure is not a simple image processing task. In this paper, we propose an algorithm to extract hepatic artery from CT datasets through...
A calibration method for a structured light system by observing a planar object from unknown viewpoints is proposed. A structured light system captures a 3D shape by a camera that observes a light stripe on an object illuminated by a projector. The 3D shape, obtained from the system defined by a pinhole model for the projection of a light stripe, is solved using the equation of a plane model for the...
In order to measure a trend of inefficient DMUs, this research has enhanced the hierarchical DEA model to time dependent situation applying discriminant analysis as a new evaluation index. The hierarchical DEA model classifies inefficient DMUs into the frontiers that are related to the order. A new index for time dependent situation by discriminant analysis is to measure the time trend in t+1 period...
Terabit all-optical complementary logic using two successive time slots to represent a logical status is proposed. An organic molecular device was used as an ultrafast optical switch. Proof-of-principle experiments were demonstrated with 400-fs interval pulses.
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