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This paper presents a phase compensation method for high dynamic target echoes, of which the echo phase is not linear but polynomial. Restricted by minimum entropy criterion, coefficients of each order of the echo phase are estimated and utilized to compensate the nonlinearity of the phase. Then the Doppler frequency estimation with higher accuracy can be gained by FFT or other frequency estimation...
Environment recognition is a necessary prerequisite for behavioral decision and intelligent control of intelligent vehicle. In order to improve the surrounding environment recognition ability of intelligent vehicles, a weighted cloud classifier is constructed to recognize the content of image captured by vehicle camera. By researching the image texture characters, several cloud classifiers are trained...
In order to use enterprises' distribution data effectively and maximize their social and economic values, a multi-level grid partition method for enterprise distribution data is proposed which divides the voluminous data into reasonable size. This method uses the provinces or municipalities of nationwide as the coarsest division, then a quad-tree is constructed to partition the points of enterprises...
Approaches to imbalanced classification problem usually focus on rebalancing the class sizes, neglecting the effect of hidden structure within the majority class. The aim of this paper is to highlight the effect of sub-clusters within the majority class on detecting minority class instances, and handle imbalanced classification by learning the structure in the data. We propose a decomposition based...
Crude oil price forecasting has been a difficult challenge for years. To improve the forecasting performance, a novel forecasting method is proposed through combining compressed sensing based denoising (CSD) approach and least square support vector regression (LSSVR) forecasting model. In the forecasting model, the grid search algorithm is used to optimize the parameter of LSSVR. Compared with the...
This paper presents a new three-dimensional positioning algorithm, named 3DPHDV-Hop, which can significantly improve the performance in terms of positioning error and coverage by using self-tune selection of projection plane and exploiting partial average hop size instead of global average hop size in wireless sensor network. The simulation results show that the accuracy of our proposed algorithm...
A new time-interleaved band-pass ΣΔ modulator architecture targeted for Class-S power amplifier is presented. To demonstrate the feasibility a 10th order 60MHz bandwidth modulator based on this architecture is designed in a standard 65nm CMOS process. 54dB of signal noise ratio (SNR) is gotten at a sample rate of 1.92GHz through simulation.
Aiming at the deficiencies of the traffic signal cycle optimization in the regional traffic signal control system and considering vehicle emission pollution, this paper proposed a traffic signal cycle optimization method based on bi-level programming model, and attempted to take reducing vehicle emission as one of the signal control objective parameters. Then the improved PSO algorithm was proposed...
Considerable attention has been paid to aligned polymer nanofibers because of their appealing mechanical and piezoelectric properties. With modified electrospinning, the aligned poly (vinylidene fluoride) (PVDF) nanofibers can be produced. However, the roles of mechanical stretching and electrical poling during this process require further investigation. Here, we utilize a rotary drum to collect the...
Intelligent induction switch has advantages such as reliability, stability, fast response, wide working voltage, and energy saving. It is designed to detect the induction of human activities and information products. The paper focus on a kind of intelligent controller, which can accurately detect the information of human body and implement automatic controlling, no matter human body moves or not....
Different natural, historical and socio-economic conditions give rise to differences in the spatial structure of regional tourism systems. With the help of tourism economics model, this paper discussed the intensity of regional tourism interrelation and the subordination degree of tourism economy among regions. Based on calculation of linkage intensity and direction between regions, it is shown that...
E-commerce enterprises concentrate their efforts on the main business, and outsource their logistics business to the professional third-party logistics company by signing a contract. This paper analyzes the most of e-commerce enterprises why to outsource their logistics business in China and elaborates the advantages and disadvantages of logistics outsourcing in the e-commerce enterprises. Based on...
An algorithm of rockbolts nondestructive detection based on immune danger theory is proposed. With the sonic frequency stress wave reflection detecting technology, a series of data are acquired. Both “danger” signal and “abnormal” signal are selected in the immune danger theory. This method has overcome the limitation of artificial immune system model based on “self-nonself”. The result shows that...
A square aperture bidirectional waveguide antenna with circular polarization of the same sense in the two opposite radiating directions is proposed in this paper. Two identical rectangular metal strips vertically separated by a quarter guided-wavelength and horizontally with a 90° cross are installed on one side of the waveguide with a 45° inclination angle. The two metal strips are fed in the middle...
Creating high quality products/services in terms of consumer preference has become a critical issue for tourism managers. To fulfil these needs, this paper proposes a route recommendation algorithm that supplies movement routes with the locations they want visit. The analysis of visiting locations and corresponding timestamps are based on a Radio-Frequency Identification (RFID) data and stored in...
This paper presents a microfluidic system enabling continuous characterization of specific membrane capacitance (Cspecific membrane) and cytoplasm conductivity (σcytoplasm) of single cells by aspirating cells continuously through a constriction channel with cell elongations and impedance profiles at two frequencies (1 kHz and 100 kHz) measured simultaneously. 1 kHz impedance data were used to evaluate...
The present paper describes a study of the detection and monitoring of fatigue crack growth using laser ultrasonic technique. Rayleigh wave propagating along material surface allow in principle for the efficient non-destructive testing of surface-breaking fatigue crack and subsurface crack. Artificial cracks with various width and depth were produced on the aluminum plates, which were used to simulate...
The IC industry has gone through fast SOC integration process over the past 50 years. We see MEMS IC sensors will follow the exact path in the years to come. After decades of dreaming, technology advancement, and commercialization efforts, accelerometer is the first one deployed in our daily life with shipment volume reaches 1B units/year. Next sensor to reach 1B units/year will be the magnetic compass...
This paper presents a microfluidic system enabling continuous characterization of specific membrane capacitance (Cspecific membrane) and cytoplasm conductivity (σcytoplasm) of single biological cells. In this study, cells were aspirated through a constriction channel while cell elongations and impedance profiles at 1 kHz and 100 kHz were measured simultaneously using microscopy imaging and a lock-in...
In this paper, a monolithic 3 axis thermal accelerometer has been developed based on standard CMOS process. This 3 axis thermal accelerometer use exactly the same sensor area and manufacturing process as 2 axis thermal accelerometer reported in the past. It is easy to mass produce and has low cost, small size.
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