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Depression detection using speech signal is becoming an attractive topic because it is fast, convenient and non-invasive. Many researches aimed at improving depression classification performance. This study investigated application of ensemble learners in depression detection and compared three speaking styles (interview, reading and picture description) in ensembles. A speech dataset collecting from...
For the miniaturization of two-dimensional autocollimator, a method of using embedded measurement system instead of special host computer is presented. This system integrates CMOS image sensor's driving circuit, frame processing, adaptive exposure control, centroid subdivision and localization of cross, misalignment angle calculation, display driver and other functions within a FPGA chip, and the...
The design of improved fault location system and its experimental test system is presented in this paper. The fault location system is based on traveling waves and contains several innovative algorithms, considering the main influential factors such as the uncertainty of wave speed and the accuracy of transmission line length. Besides, the design of experimental system for testing the location precision...
Previous research on answer selections was mainly concentrated on factoid questions. Nevertheless, non-factoid questions are equally important because they are common in community question answer (CQA). In this paper, we propose a semantic calculation based convolutional neural network (SCCNN) to address this problem. The main difference of SCCNN from previous models is the use of correlation information...
This paper designed a control system for robotic wheelchair for the aged and the disabled, which consisted of two main parts: gesture interaction and intelligent wheelchair. This design used the Kinect camera to develop the problem of hand gesture segmentation and gesture tracking. The segmentation algorithm based on skin color and depth information method. Then the system gets the information of...
Structure-from-Motion (SfM) methods can be broadly categorized as incremental or global according to their ways to estimate initial camera poses. While incremental system has advanced in robustness and accuracy, the efficiency remains its key challenge. To solve this problem, global reconstruction system simultaneously estimates all camera poses from the epipolar geometry graph, but it is usually...
In order to accomplish the fault prediction of complicated and enormous mechanical equipment, this paper proposed a fault prediction model for complicated mechanical equipment that based on rough sets theory and BP neural network . Firstly,the discretization of continuous data was implemented by the discretization algorithm based on dynamic hierarchical clustering in rough set theory;secondly, an...
The Smart Transformer, a solid-state transformer with control and communication functionalities, can be the ideal solution for integrating storage into the grid. By leveraging the knowledge of the grid state of distribution grids thanks to smart meters and/or dedicated remote terminal units, in the paper, it is proposed a control strategy for a MV/LV smart transformer (ST) with integrated storage...
GaN vertical power transistors have gained increasing interest in recent years due to the advantages over lateral transistors in high voltage/high current applications. To date, two major topologies have been studied most: gate-on-epi-surface (GoE) and gate-on-sidewall (GoS). The GoE devices include CAVET [1] and VDMOSFET-like transistors [2, 3]. The GoS devices include U-MOS or trench-MOSFETs with...
The integration of uncontrolled distributed generation (DG), like photovoltaic and wind turbines, and the growing amount of connected loads in the medium voltage (MV) grids have worsened the voltage variability, and in extreme cases violating the voltage limits. New mechanism and control action for supporting the voltage must be adopted, due to the unpredictability of these resources. The power electronics-based...
In order to analyze and improve the shielding effectiveness of coating or metallic mesh, it is necessary to estimate the equivalent complex permittivity of multilayer materials based on the 3D-eIectromagnetic field simulation model or experiment results. A method is presented to calculate the complex permittivity for shielding effectiveness equivalence. Firstly, the simulation model of the multilayer...
GaN vertical power devices have many advantage over lateral device in device scaling, reliability and thermal management, etc. Traditional power transistors employ p-type pockets to achieve E-mode, RESURF and avalanche capabilities. However, this topology in GaN vertical power transistors has been challenging to implement [1] due to the difficulty to achieve selective area doping without compromising...
Sub-nanosecond pulse sources based on avalanche transistors can generate sub-nanosecond high-voltage pulse with the amplitude of several kV, the rise time of about 180 ps and the full Width at Half Maximum (FWHM) of about 220 ps. This type of pulse source, which is widely used in ultra wide band (UWB) radiation systems, electromagnetic compatibility experiments and other researches, is based on the...
Improvement to user interface technology for port crane operators can lead to safer and more ergonomie environments for cargo transport. An accurate and responsive container-handling guidance system can increase productivity and reduces costs. In this work, a vision-based assistive system for quayside crane operator is developed for collision warning. The system applies a new object edge detection...
User-item rating data preprocessing is an important factor that influences the accuracy of the collaborative filtering algorithms. When users assign a rating to an item, the rating may be influenced by some external factors, such as users' emotional factor. By analyzing the deviation of the users' ratings, this paper presents a novel recommendation method based on adjusted user-item rating matrix...
This session covers the latest advancements in frequency sources and synthesis, fundamental blocks for communication, sensing and imaging systems. The first presentation in the session demonstrates a high-efficiency, high-power multiport radiating element at 114GHz in a SiGe BiCMOS technology. The second paper proposes an efficient calibration technique applied to a 27-to-31GHz injection-locking frequency...
In this paper, we address a problem of joint power and sub-band allocation to maximize the energy efficiency at mobile terminals (MTs) for an OFDMA-based uplink data transmission. Due to difficulty of the combinatorial programming problem, we solve the problem by two steps. With the aid of the generalized stable marriage (GSM) method, we firstly obtain the optimal number of sub-bands as well as the...
We demonstrate a passively offset-free 1 GHz laser source at 1.03 μm by difference-frequency generation between two spectral components of a spectral broadened Yb:fiber laser based source.
Database clustering is a well-established technology to improve the availability and scalability of a database service. Query replication and log replication are two popular methods for propagating database updates across a cluster of database servers. An important issue that received relatively scant attention and is the focus of this paper is how to add a new server to an active-active database...
This paper presents dual band frequency selective surfaces (FSS) with simple profile. The dual stop band characteristic is implemented by multiresonant elements: square loop and cross dipole. Vertical vias are loaded to the cross dipole for enlarging the capacitance and inductance in the high frequency band, and lower the corresponding resonate frequency. Equivalent circuit (EC) model is applied to...
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