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A parallel hardware architecture for real-time image feature detection based on the SIFT (Scale Invariant Feature Transform) algorithm has been presented. The proposed parallel hardware architecture is completely stand-alone; it reads the input data directly from VITA2000 and provides the results via a Field-Programmable Gate Array (FPGA); image key points are extracted in combination with SIFT IP...
The density of through-silicon-via (TSV) on CMOS chip is limited by TSV dimension and keep-out zone (KOZ). A high aspect ratio Cu TSV process, 2 µm × 30 µm, is demonstrated on 28nm CMOS baseline with good electrical performance and low cost. By implementing 2 µm × 30 µm TSV, the Si stress in the vicinity of TSV caused by thermal expansion is able to be relieved. It is, therefore, shown that the relaxation...
In this paper, flue-cured tobacco cultivar (Nicotiana tabacum Yun 87) was selected to explore whether ammonium phosphor nitrate (APN) alone or associated with potassium sulfate(K2SO4) could help reduce the proportion of potassium nitrate(KNO3) in top-dressing on flue-cured tobacco (FCT). A field experiment was conducted in randomized block design containing three replicates in seven treatments. Results...
X-ray image segmentation is an important issue in medical image analysis. Due to inconsistent X-ray absorption, the intensities are usually unevenly distributed and noisy in the processed organ, thus the object segmentation becomes difficult. In this paper we propose a new segmentation method for patella from the lateral knee X-ray images based on the active shape model (ASM). At first, a patella...
Robotic cell injection is a technique that employs automated device to insert substances into a single living cell with a fine needle. Most existing microinjection methods are based on position control without explicit regulation of the injection force. The injection force, if not controlled properly, may destroy the cell and lead to death of the cells. In this paper, we propose a force control based...
Most existing power flow calculation methods use a swing bus as a reference node for the whole system. Increasingly, new distributed generation resources (DGRs) are being added to the grid. Sometimes, local demand or failure of the grid can result in independent micro-grids forming, which are known as `islanding' systems. However, current DGRs are often limited such that there is no single DGR which...
The main purpose of this paper is to describe advances in high current source converter (CSC) and control for use in superconductive magnetic energy storage (SMES) schemes instead of the conventional PWM-chopper based VSC configurations. The multi-level current reinjection (MLCR) CSC provides the simplest structure, as well as switching at zero current, a property that permits retaining the use of...
A method of a no reference image quality assessment (NR-IQA) is reported based on the product of information entropy and averaging contrast in this paper. Based on the study of the variation of information entropy and averaging contrast with transformation parameters in an image gray transformation called Zadeh-X transformation, a no reference image quality assessment function constructed by the product...
Based on study of variation of information entropy and mean contrast with transformation parameters in image gay transformation, a no reference image quality assessment function constructed by the product of information entropy and mean contrast, InEnCF, is established. A criterion for the optimal image is determined by the maximum of no reference image quality assessment function. An optimal quality...
This paper presents a platform for Internet-based robotics competition and education of secondary students. The platform adopts the Client/Server architecture which enables students to compete interactive robotics games via the Internet. To facilitate learning of the students participating in the robotics competition, a robotics curriculum and the supporting hardware and software kits have been also...
In this investigation, a triode structure CNT-FED is produced using screen printing and photolithography process. Wet-etching process was employed to fabricate the insulating holes. The dimensional uniformity of insulator holes was improved by changing the wet etching mechanism from vertical dip-etching to horizontal spray-etching.
45 nm SOI CMOS technology target for high performance CPU application is reported. Process induced strained CMOS demonstrates 1232/855 uA/um DC Ion at 100 nA/um Ioff under Vdd=lV, which is the highest ever reported performance at 45 nm ground rule for both SOI and bulk technology. Small width PFET reaches record high 975uA/um. High SiGe over Si volume ratio in thin film SOI enables high compressive...
It is a challenging problem to derive closed-form solution of inverse kinematics of the humanoid robot fingers with nonlinearly coupled joints. This paper presents a novel quasi-closed-form solution of inverse kinematics for such fingers. On the assumption that the angles of the two coupled joints are equal, an approximate closed-form solution of fingertips inverse kinematics is derived firstly. Utilizing...
Repeatable manipulation and auto-assembly of nano-scale components is a critical potential for future developments in nano optics, opto-electronics, hybrid microelectromechanical (MEMS) systems, and nano-scale devices. This paper focuses on the fabrication of nano structures using single probe with force feedback. The structures that are fabricated can be used for both rapid prototyping and for replication...
In order to estimate & evaluate the macroscopic scale of power transmission & distribution network, transforming capacity, the number of substations, line-length and the number of loops are put forward as scale indexes to describe the planning scale; social electricity consumption, highest load, population, and so on, are put forward as influence factors of the scale indexes. The rule of correlation...
Up to now, most of people are still cooking in the kitchen, which makes them feel fatigued and also makes air polluted. With the development of the numerical control technology, it becomes more and more urgent to apply the related technology to the automatic cooking field. In this paper, the cooking techniques for the Chinese dishes is introduced and an automatic cooking machine is presented. The...
A multi-level current reinjection concept, already shown to provide acceptable harmonic reduction with fewer switching components than the conventional multi-level schemes, is described in this paper with reference to its performance when operated as a STATCOM. PSCAD/EMTDC is used to illustrate the steady state and fast dynamic response to system changes, both under symmetrical and asymmetrical terminal...
This paper focuses on nano-scale analysis of mechanical properties of polymer and carbon nanotubes (CNT) embedded MEMS devices using the probe tip of the atomic force microscope (AFM). The mechanical properties of surfaces of layered materials were investigated by using nanoindentation produced with tips of an AFM. Experiment results indicated the bending characteristics of the device and could also...
Because magnitude-squared coherence function (MSCFs) could lose some phase information, based on the core theorem for the frequency domain coherence in signal processing, called as double spectral theorem, we present the two types of new magnitude coherence functions (MCFs) in order to extract the coherence between two signals and give the conditions that they are equal to 0 or +1 or -1. Here, we...
Studying frequency domain representation for the coherence between two signals is an important basic theoretical problem in the fundamental theories of signal processing. However, magnitude-squared coherence function (MSCFs) could lose some phase information. Based on the core theorem in the frequency domain coherence theories, called as double spectral theorem (DST), we presented the two types of...
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