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Blind estimation of nonlinear operator product in back-propagation algorithm is proposed. Significantly enhanced flexibility of nonlinear compensation is experimentally demonstrated in a 5×64-Gb/s WDM PDM-QPSK system over 1920-km SMF link with ∼1.5-dB performance improvement.
This study reports a weakly alkaline slurry (WAS) for copper barrier chemical mechanical planarization (CMP) process in standard 12-inch CMOS manufacture. We do copper barrier CMP process result comparison between current maintream production used slurry (BL) and WAS slurry adopts a unique alkaline macromolecular organic chelating agent with the high activation energy (named FA/O). Based on the same...
Studies have shown that full-field digital mammography (FFDM) has the potential to alleviate some of the limitations of screen-film mammography (SFM). It is therefore important to develop computer-aided diagnosis (CAD) systems for FFDM or adapt CAD systems developed for SFM to FFDM. The purpose of this study was to evaluate the performance of a CAD system, originally developed for characterization...
In this work, a novel design tor a tully on-chip 3D antenna operating at 4 THz that can be fabricated by a novel MEMS (micro electro mechanical systems) technology directly realized on a silicon substrate is presented. The antenna includes two parts, the metallic helix and the microstrip on the substrate for feed. The proposed antenna structure is well suitable designed by MEMS technology, the fabrication...
The purpose of the study is to develop an automated system for detecting microcalcifications within a predefined region of interest (ROI), and classifying the clusters as malignant and benign on full-filled digital mammograms (FFDM). Our system consists of two stages. In the first stage, a detection program is used to detect cluster candidates within the ROI. A rule-based identification method is...
In this paper, a novel common-mode (CM) model with coupling parameters is established of induction motor. Based on this model, the shaft voltage and bearing current problems are analyzed deeply in motor drive system. The path of the bearing current is confirmed and the reduction methods are proposed. Simulation and experiment results are presented to indicate the proposed model validity. This model...
Globalization makes international communications between countries much more significant, which is well manifested in all industries. Therefore, talents with a good command of professional English (PE) are critical for enterprises to gain success in international competitions. However, school education cannot provide adequate training for PE talents because of the lack of PE resources and teachers...
For the capacitance signal of capacitive sensor output is tiny, a capacitive sensor detection circuit is designed to solve the problem of hard measuring. Its sensitivity is 1V/pF. The design of noise suppression circuit is added, making the output DC voltage signal more stable. The detection circuit includes a sine wave generator circuit, a differential amplifier circuit, a band-pass filter circuit,...
With the development of BeiDou(BD) Navigation Satellite system, BD can be another choice for remote precise time and frequency transfer. A strict common view test using BD Navigation Satellite System is carried out in this paper. Since there are GEO, IGSO and MEO satellites in BD Navigation Satellite system, common view based on GEO, IGSO and MEO are discussed in this paper separately. Finally, we...
This paper gives a test method of BeiDou timing receiver delay. A BeiDou System simulator and a time interval counter were used in the experiments. During the process, the most important step is to calibrate the delay of the simulator. The uncertainty of this method is analyzed to be less than 1.5ns. Using this method, some typical Chinese commercial timing receivers were tested, and the results are...
This paper presents an intact scheme of timing synchronization for Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) Ultra Wide Band (UWB) systems. Frame detection and coarse timing are implemented with the Maximum Correlation (MC) method based on the first-band information of the preamble. Fine timing is achieved with the Minimum Energy Ratio (MER) method based on the information of...
This work is the application of back propagation neural network (BP NN) on the world's first AP1000 third generation 1250 MVA nuclear half-speed (4-pole) turbo-generator in harmonic analysis. Large-capacity generator is the mainstream of nuclear power future, which leads the trend of nuclear power development and also faces many problems need to be tackled as soon as possible. Harmonic distortion...
Correct genotype identification of medicinal plant material remains important for Chinese traditional medicine. Limitations of chemical and morphological approaches for authentication have generated need for newer methods in discrimination of famous-region herbal medicines. The present study was carried out to develop DNA based markers for identification of Chinese famous-region drug Ophiopogon japonicus...
This paper proposals a novel hybrid static var compensator, which can adjust capacitor continuously. The proposed compensator combines the PWM type AC_Buck converter with the transformer to adjust the voltage on the compensating capacitor directly. So the continuous output of reactive power is realized. The compensator has fast dynamic response, and produces no harmonic. The capacity of the transformer...
According to specific seepage control requirements for waste landfill site, not only slurry must have low permeability coefficient, but also effective adsorption and retardation to the pollutant. Based on these, slurry with low permeability coefficient and good retardation to the pollutant, namely bentonite - cement - fly ash (BCF) slurry, was developed through a large amount of orthogonal experiments...
A brief introduction of passive localization is presented in this paper. With the localization algorithm of wireless sensor networks, a novel algorithm classification is discussed. Outer node passive localization based on wireless sensor networks is analyzed, and a new localization algorithm is designed. The Monte-Carlo simulation experiment results demonstrate that the new algorithm has a better...
Migrating legacy object-oriented system functionalities to SOA environment is a important problem that frequently arises in many system maintenance and integration tasks. A service is often implemented by complex collaborations of many objects in an object-oriented system. Such complexity brings impedance mismatch between service and object. Moreover, the delocalized nature of object-oriented system,...
The shadows are regarded as obstacles in remote sensing image analysis. With high-resolution remote sensing images developed, especially in urban area, shadow detection plays a much more important role in many applications. This paper presents a novel vision-based shadow detection method. The shadow areas are usually much darker than non-shadow areas visually in high resolution images. In our method,...
A new monitoring method of power quality based on the industrial computer is proposed. Using fast Fourier transform, synchronous sampling signal from the data acquisition card is processed. This system can analyze and display the power quality parameters. The results of the experiment show that the system can monitors and analyzes the power quality parameters in power systems with long time, and harmonic...
In this paper, we discuss some possible deployment patterns of wireless sensors to achieve both coverage and connectivity which were ignored in the discussion of "Deploying Wireless Sensors To Achieve Both Coverage And Connectivity, ACM, MobiHoc, 2006", and we prove that the strip-based patterns are absolutely optimal among all the deployment patterns of wireless sensors to achieve both...
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