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This study explored the hidden biomedical information from knee MR images for osteoarthritis prediction. We have computed the Cartilage Damage Index (CDI) information from 36 informative locations on tibiofemoral compartment from 3D MR imaging reconstruction and used PCA analysis to process the feature set. The processed feature set and original raw feature set were severed as input to four machine...
Representation learning algorithm in medical area maps high dimensional real world medical concepts to low dimensional vector space, encodes rich medical knowledge, and has brought improvement to various machine learning applications in medical area. However, previous representation learning models in medical area failed to consider the multi-sense characteristic of medical concept. Moreover, the...
In order to explore the mental retardation of patients with depression, the visual search paradigm was used in this study. The emotional expression (happy, sad) and neutral expression were used as interdependent or search targets in this paradigm. Subjects were asked to search the target face form a matrix containing 16 emotional faces after watching the target face. The measurement indices of the...
We introduce the transverse waveguide-mode degree of freedom to quantum photonic integrated circuits, and demonstrate the coherent conversion of a photonic quantum state between path, polarization and transverse waveguide-mode degrees of freedom on a single chip.
This paper investigates the neutral-point (NP) potential unbalance of the fault tolerant topology of three-level neutral-point-clamped (NPC) inverter, namely the eight-switch three-phase inverter (ESTPI). It is illustrated in this paper that the conventional carrier-based pulse width modulation (CBPWM) will cause the NP potential unbalance of ESTPI. Moreover, the NP potential unbalance will lead to...
The motivation of this talk is to investigate what quantum resources will bring about in our daily life. A kind of quantization for general bipartite games is first given and then applied to both the modified classical “cash in a hat” game and modified Prisoners Dilemma game with different distribution policies. It is shown that quantum entanglement can bring full cooperation with the help of fair...
A compact, low-cost, dual-band circularly polarized (CP) microstrip antenna with single-feed operating at both 1555 MHz and 2500 MHz bands is designed in this paper. The circular patch of the antenna is slotted with four complementary spiral grooves for dual-band radiation. The bandwidths of |S11|<−10dB of the antenna are 42 MHz centered at 1555 MHz and 25 MHz centered at 2500 MHz, respectively...
based on accident investigation analysis of domestic and international chemical industry park, analyzes on chemical industry park in recent years on the basis of the causes and the mechanism to cause an accident in China, absorbing domestic and foreign chemical industry accident experiences, establishes the integrity chemical safety assessment system. According to experts grade on Hubei chemical industry...
We present an approach to design focusing reflectors using two-dimensional sub-wavelength gratings (2D SWGs). The effect of the grating reflecting mirrors size on the reflection focusing performance is investigated. The performance parameters considered mainly include focal length, phase change, numerical aperture. Using COMSOL software, the simulation results show that the focal length are affected...
We exploit how to overcome phase damping decoherence when the phase damping parameters are uncertain. It is shown that the “relaxed” control goal may be achieved by combing simple open-loop coherent control with periodic projective measurements. Both the sufficient conditions and constructive design procedures are presented. The control design is reduced to selecting the period of projective measurements...
In this paper, we mainly discuss the stability analysis problem based on frequency response of integrated operational amplifier in linear low-pass filter circuit. By introducing the concept of “virtual short” and “virtual open” principle, the effect of the negative feedback closed-loop gain for the integrated operational amplifier circuit was addressed. Furthermore, the amplitude frequency and phase...
In this study, we investigate the Ron degradation in D-mode AlGaN/GaN MIS-HEMTs on a Si substrate via an accelerated step stress at different temperatures. We have observed a three-phase Ron degradation behavior, which is highly correlated with a drain bias and back gate bias. First, the Ron degradation increases till a peak value when the drain bias increases. Second, when the drain bias increases...
The feature size of integrated circuit devices continues to decrease. And with the development of metal interconnection technology, metal wire constantly changes to thin and thin such that metal resistance increase, current density rise and the heat generated augment. For these reasons the integrated circuit reliability about electro-migration (EM) declines which is a serious threat to IC's performance...
The four-switch three-phase inverter (FSTPI) is the fault-tolerant topology of the six-switch three-phase inverter (SSTPI), and the maximum output voltage is limited in the linear modulation region. Therefore, an overmodulation strategy for FSTPI is presented, based on virtual voltage vector and superposition principle, in order to improve the utilization of the DC voltage, enhance the output capacity...
5G-based Vehicular Social Network (VSN) fiercely calls for an advanced requirement of vehicle's location and trajectory privacy preserving scheme. Since the VSN owns the characteristics of high mobility and multiple hops relay, we first construct an architecture of 5G-based VSN with the Mobile Femtocell (MFemtocell). Then we propose the Dynamic Group Division algorithm (DGD), which is suitable for...
In view of the reliability of micro electro mechanical system (MEMS) devices, the common failure modes and mechanisms of MEMS are introduced through a lot of data research and failure information collection. The key failure modes of MEMS (adhesion, mechanical fracture, and wear) and their failure mechanisms are further analyzed and summarized. Meanwhile, the corresponding prevention and improvement...
It has been a hot issue and also a difficulty to study the fault tolerance of multilevel converters. The topology changes to eight-switch three-phase inverter (ESTPI) if one leg of three-level NPC inverter is failed. An optimal modulation algorithm of ESTPI is proposed in this paper. Due to the loss of one leg, the DC-link voltage utilization of ESTPI is reduced by half. Hence, an overmodulation algorithm...
In the opportunistic network with social attributes, message forwarding based on social relations often has good communication efficiency. The existing opportunistic network routing algorithms are based on the static social relations. But in practical application scenarios, the moving nodes make the network social relations dynamic evolution with time, so the social relation of the opportunistic network...
In this paper, a novel 4H-SiC trench junction barrier Schottky diode (TkJBS) with high-k semi-insulating polycrystalline silicon (SIPOS) is proposed. By adopting the new high-k dielectric-trench structure, the peak electric field at the corner of P+ regions (COP) can be weakened significantly, and the device breakdown voltage (BV) is enhanced. The SiC TkJBS has a 60.7% higher BV and a 88.7% higher...
There is often thermal challenge to keep Central Processing Unit (CPU) temperature within its design specification for rack server systems with air cooling solution, due to the growing demand for higher CPU performance and the ever-increasing CPU thermal design power (TDP). This paper provides an approach to enhancing system air cooling capability of servers mounted on a rack, addressing the challenge...
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