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Spectral methods refer to the problem of finding eigenvectors of an affinity matrix. Despite promising performance on revealing manifold structure, they are limited in its applicability to large-scale problems due to the high computational cost of eigendecomposition. Nyström method, as a classic method, seeks an approximate solution by first solving a smaller eigenproblem defined on a subset of landmarks,...
WLANs are susceptible to interference and not suitable for transmission of the integrated services of urban rail guided transportation. With the rapid deployment of 4G, it is highly concerned if the LTE can be used for urban rail transit. In this paper, we present the latest field test we made on the performance of Time Division Long Term Evolution(TD-LTE) to transmit the integrated services of urban...
Link prediction plays an important role in complex network analysis. It is to predict the existence of an unknown link or a future link in a network. Classical methods for link prediction evaluate the similarity of vertices based on common neighbors, and denote that every common neighbor makes equal contribution to the connection likelihood. However, common neighbors may play different roles depending...
Based on physical waveforms, we design a CAN bus measuring system with electric property, the physical layer waveforms which are transmitting on bus network can be collected directly and stored in real time. Fault point can be located, according to analyze and process waveform data. Therefore, the new resolved solution is providing for CAN bus performance measurement, fault diagnosis and location.
Unilateral medial temporal lobe epilepsy (mTLE) have similar symptom in clinic. Previous studies indicate that it's difficult to find significant differences when comparing the structure of left and right mTLE directly. As is known to all, hippocampus sclerosis often causes mTLE. Therefore, it may be essential to detect the internal structure of hippocampus (HC) to confirm the lateralization of mTLE...
An analytical description of energy level alignment at metal-organic interface based on a detailed electrostatic model and exponential density of states is presented here. The calculated alignment between the Fermi energy of electrode and the organic transport energy shows good quantitative agreement with the proposed numerical electrostatic model and experimental data, indicating that the analytical...
A physical model of revealing the charge carrier transport characteristics based on first-principles calculations has been proposed for oxide-based RRAM. Based on the proposed model, we have investigated the influence of different kinds of dopants on transport characteristics in HfO2-based RRAM. The present method will be contributed to clearly understand the dopant effect, and then tune the RRAM...
This paper presents a new speed control system for a flux-modulated permanent-magnet (FMPM) in-wheel motor. It is based on deadbeat-direct torque and flux control (DB-DTFC) to reduce the torque ripple and improve the steady performance compared with conventional SVPWM-DTC system. DB-DTFC calculates the control input of next control period so that a new stator current observer is proposed to predict...
This work aims to determine features for the distinction of coma and quasi brain death (QBD) consciousness states by implementing an algorithm for extracting phase information from EEG data using Wavelet/ Hilbert Transform. The relationship between the EEG data recorded from pairs of different electrodes is then quantified by calculating phase synchrony using Shannon entropy, as a phase synchrony...
As the differences in user business demand increasing, in order to effectively reduce the network delay and improve resource utilization, a High-priority Assignment First Dynamic Wavelength and Bandwidth Allocation algorithm (HAF-DWBA) in TWDM-PON is proposed. According to the Service-Level Agreement to determine the priority of ONUs, this algorithm can implement five types of T-CONT and four kinds...
In this paper, we demonstrated a passively mode-locked erbium-doped fiber laser by incorporating a microfiber-based tungsten diselenide (WSe2) saturable absorber (SA). We obtained stable mode-locking with pulse duration of 1.2 ps, repetition rate of 2.6 MHz and signal-to-noise ratio (SNR) of 66 dB at maximum pump power of 400 mW. The experimental results show that CVD-grown WSe2 film can serve as...
We report, for the first time to our knowledge, the usage of CVD-grown few-layer WSe2 as a saturable absorber for the mode locking of a thulium-doped fiber laser. The WSe2 saturable absorber was deposited on the waist of the tapered fiber. By employing the WSe2 saturable absorber, we demonstrate a passively mode-locked fiber laser operating at 1863.96 nm with a 3 dB spectral bandwidth of 2.89 nm....
Volume reconstruction plays an important role in improving image quality for freehand three-dimensional (3D) ultrasound imaging. The kernel regression provides an effective method for volume reconstruction in 3D ultrasound imaging, but it requires heavily computational time-cost. In this paper, a programmable graphic-processor-unit-(GPU) based fast kernel regression method is proposed for freehand...
Magnetron is a high-power vacuum tube that generates microwaves based on the interaction of a stream of moving electrons under a cross electric and magnetic fields with a series of open coupled metal cavity resonators. The magnetron is widely used in radars and also well-known as a low-cost microwave source for microwave ovens. Traditionally, a thermionic cathode is used as the electron source and...
Emergency logistics is one of the most important measures to solve disastrous accident. Studying on the implement of emergency logistics project has a significant role in supporting emergency rescue system. Therefore, it is necessary to analysis and plan on emergency logistics project in order to support the emergency rescue system. This paper focuses on current flaws of emergency logistics, introducing...
This paper addressed the retrieval of land surface temperature (LST) from combined mid-infrared and thermal infrared data of the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-Orbiting Partnership (S-NPP). To efficiently remove the effect of the direct solar radiance, a relationship between direct solar radiance and water vapor content, view zenith angle and solar...
We report on a type of two-dimensional layered materials based Van der Waals heterostructures (VdWHs) by vertical stacking different materials in turns on the target substrate. The VdWHs are used as remarkable saturable absorbers (SAs) in experiments. Passive mode-locking and Q-switching operation could be obtained by embedding our VdWHs into an Erbium-doped fiber laser cavity. The results demonstrate...
Short-term high-resolution Quantitative Precipitation Nowcasting (SQPN), which refers to the forecasting of future precipitation within a very short time (I. e. 0–2h), is useful for flash-flood warning, navigation safety, and other hydrological and meteorological concerns.
With complex pathogenesis, Chronic Obstructive Pulmonary Disease (COPD) is difficult to treat. Traditional Chinese Medicine (TCM) showed obvious effect in treating COPD. However, invaluable TCM experience lacks of systematic summarization and study. Association rule is used to discover the relationships among data items in a large amount of data. Because of clear and useful results, association rule...
Aiming at getting rid of the dependence of high precision external attitude reference, this paper presents a 18-position calibration algorithm. This method takes the accelerometer output as observation, adopting reasonable transposition arrangement to fully motivate the relation between the observation quantity and the inertial instrument error, using the least squares method complete identification...
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