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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...
The effects of Diethyl aminoethyl hexanoate (DAH) on one-step micro-propagation culture with leave, petiole, and root explants were investigated. It was found that adding DAH into basic media increased the one-step culture rates from about less than 40% to more than 50%. For leaf explants, the optimum DAH concentration is 0.08 mg·L-1; petiole, 0.32 mg·L-1, and root explant,...
In a magnetically coupled resonant (MCR) wireless power transfer (WPT) system, adding repeating coils is an effective way to lengthen transmission distance and improve the transferred power in a wide range. This paper investigated a 3-coil MCR WPT system. Based on fundamental harmonic analysis on the equivalent circuit model, the relationship between the transmission characteristics and the spatial...
With the rapid development of the business and the continuous improvement of the level in SGCC, the security research in the mobile field has been paid more and more attention. Although mobile work terminals can improve the efficiency of field operations, but a large number of mobile terminal access, leading to the terminal management difficult to increase, security has been greatly challenged. Therefore,...
With he rapid development of the mobile Internet industry, information security based on trusted computing is also becoming increasingly serious. Considering that most of the existing research is based on the static security measure, and based on the server and PC side, a security operation environment measurement framework based on mobile terminal is proposed in this paper to alleviate the information...
In the ultra dense network (UDN), user-centric virtual cell (VC) has been proposed to weaken the traditional concept of base station centric cell, where each user is served by several transmit points (TPs). The overlapped VCs in UDN will result in severe inter-VC interference and degrade the system throughput. Merging overlapped VCs can transform the serious inter-VC interference into intra-VC interference,...
Astronautically Phased Mission System (APMS) has the characteristics of sophisticated system structure, complex mission profile and varied system working modes and states. For these characteristics, this paper analyses the mission profile and reliability features (sequential, correlate and dynamic) of APMS, and proposes a method of reliability synthetic modeling considering multi-feature for APMS...
This paper proposes a new method for Astronautically Phased Mission System (APMS) reliability assessment based on Multi-source data fusion. Traditional methods for APMS reliability assessment have two problems. One is lack of overall consideration of the different product hierarchies, different development stages, and different stress conditions data. The other is too difficult to give the reliability...
This paper is focused on investigations of the improved correction of the effect of variation in incidence angle on ScanSAR data. Conventional correction methods (such as LLM, locally linear mapping) typically assume that each target class has a similarity distribution in the middle of the image. The objectives of this study are to extend the correction algorithm to full swath width without any assumptions...
In precision motion control systems, the two degree of freedom (2-DOF) control structure is widely utilized for improving tracking performance. Although ideally the 2-DOF control can be designed to yield zero tracking error, the practical performance is often deteriorated due to disturbances. In some cases, the disturbances can be measured or estimated and then compensated by modifying the control...
The dual-drive H gantry is widely used in many industrial processes that require high precision Cartesian motion. The conventional rigid-link version suffers breaking down of joints if any de-synchronization between the two carriages occurs. To prevent above potential risk, a novel biaxial gantry with flexure-links is designed to allow a small rotation angle of the cross-arm. Nevertheless, the chattering...
This paper considers the detection problem and its realistic implementation for multiple-input multiple-output (MIMO) radar with widely separated antennas. In particular, since the range cells of different transmit-receive channels are not in superposition, but intersecting with each other, it is difficult to determine, by gathering measurements from all transmit-receive channels, whether a target...
Low-cost, indirect-drive actuators, like timing belts are widely used in many industrial applications requiring linear translational motion. However, the timing belt faces greater control challenges as newer technological processes necessitate an increased tracking accuracy, precision and a need for minimal vibration all in the presence of rapid payload changes. Firstly, it is widely known that belt...
The weapon target assignment (WTA) problem is a fundamental problem arising in defense-related applications of operations research. The multi-stage weapon target assignment (MWTA) problem is the basis of the dynamic weapon target assignment (DWTA) problem which commonly exists in practice. The MWTA problem considered in this paper is formulated as a multi-objective constrained combinatorial optimization...
Interactive multiobjective optimization (IMO) methods aim at supporting human decision makers (DMs) to find their most preferred solutions in solving multiobjective optimization problems. Due to the subjectivity of human DMs, human fatigue, or other limiting factors, it is hard to design experiments involving human DMs to evaluate and compare IMO methods. In this paper, we propose a framework of a...
This paper focuses on the production scheduling problem in a rotor workshop. The scheduling problem is formulated as a reentrant hybrid flow shop problem with non-identical machines in parallel. Some heuristics are developed to solve the problem. The proposed algorithms are compared through various instances that are generated based on real operations in the workshop. Experimental result also reveals...
Linear direct feed drives are widely used in machine tools, but an abrupt counter force from the secondary part will induce the jerk to the metro frame contacted with the linear motor and cause the vibration of auxiliary devices on it. The jerk-decoupling cartridge (JDC) provides a buffer to reduce such an impact. To systematically take care of both the tracking error and the jerk induced to the metro...
3D printing is a kind of important method in the field of rapid prototyping and customized production. In order to achieve the purpose of production integration and product customization of 3D printing, this paper propose a 3D printing cloud integrated platform architecture based on cloud manufacturing. Moreover, how to evaluate and select the services of different distributed 3D printing terminals...
The disturbance observer (DOB) is widely used in high precision motion control applications as an effective means of rejecting disturbances. DOB design essentially boils down to the design of the Q filter. In traditional DOB design, the Q filter follows a standard form such as the Butterworth or binomial, where the bandwidth is the only tunable parameter. In this paper, we employ a more general form...
As a mid-range wireless power transfer (WPT) technology, magnetically coupled resonant (MCR) WPT has become a reseach focus in recent years. In this paper, an equivalent circuit model of 4-coil MCR WPT system was presented, along with the formulas of the output power and transmission efficiency. Besides, to comfirm whether spatial misalignments will influence the transmission characteristics of the...
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