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The Sea-Wing7000 underwater glider, developed by the Shenyang Institute of Automation, CAS, is an instrument platform designed to glide to depths of 7000 meters for the application of deep-sea environment variables observation. Similar in structural layout to the “Sea-Wing” glider[1], to achieve these depths, The “Sea-Wing7000” using composite of carbon fiber / resin as the pressure hull. A “Sea-Wing7000”...
In order to guide and control the Charging behavior of private EV in residential area for filling valley load at night, this paper proposed a step tariff tiered pricing strategy combined with peak-valley time-of-use method. At first, a directive load curve of each charging point is obtained according to non-EV-charging forecast curve of residential load in area power grid. And then, the curve is mapped...
A monolithic CMOS DC-DC converter with integrated power switches and a novel variable-frequency boundary conduction mode for feedback control is presented in this paper. Implemented in a 0.18-um CMOS technology, the operating frequency is from 90 kHz to 500 kHz and the power efficiency can achieve 92.6%. The total area including I/O pads is 1.1mm × 1.15mm.
Gliding extended range projectile is restricted by such conditions as the speed, the engine thrust force, the engine work time and the impact point speed inclination when attaining the longest range. To simplify the problem and acquire a well-designed trajectory, a phase-based method for optimizing the overall trajectory is presented. The overall trajectory is divided into the boosted phase, the cruise...
With the rapid increase in the number of electric vehicles, V2G model has been widely concerned. In this paper, the three-level LLC resonant DC/DC converter applied to V2G is chosen as the research object. The charging process of the circuit is introduced from the basic principle of the circuit. Afterwards, MATLAB/Simulink is used to simulate and analyze the bifurcation phenomenon. Finally, it controls...
Air quality forecasting is an effective way to protect public health by providing an early warning against harmful air pollutants. Traditional methods mainly focus on neural network model. However, relationship between parameters is neglected in the learning process and model structure also limits the accuracy of forecasting. In this paper, a two-phase neural network (2-NN) model based on full connected...
Effective image and sentence matching depends on how to well measure their global visual-semantic similarity. Based on the observation that such a global similarity arises from a complex aggregation of multiple local similarities between pairwise instances of image (objects) and sentence (words), we propose a selective multimodal Long Short-Term Memory network (sm-LSTM) for instance-aware image and...
Surveillance cameras have been widely used in different scenes. Accordingly, a demanding need is to recognize a person under different cameras, which is called person re-identification. This topic has gained increasing interests in computer vision recently. However, less attention has been paid to video-based approaches, compared with image-based ones. Two steps are usually involved in previous approaches,...
Fruit industry occupies a pivotal position in agricultural production, unsalable fruit is a major issue related to people's livelihood. The research puts forward the construction of e-commerce service platform based on the analysis of the sales status of local fruit. The platform uses the sensor technology to achieve the fruit tree growth environment and the whole process of growth of technical guidance...
Nowadays big data is being used to create wealth in many fields, in particular e-commerce is playing an increasing role in modern life and the role of big data in this sphere is constantly evolving. The demand for e-commerce is creating massive amounts of data all the time and traditional processing techniques and ways of thinking have been unable to cope with it. Thus big data methodology has the...
The thin disk-shaped active medium is a very thin laser crystal with one face mounted on a heat sink. The large cooled-surface-to-active-volume ratio avoids thermal problems occurring in conventional high power rod or slab lasers and enables high power TEM00 operation. However, the absorption of pump light in the thin disk crystal for single pass is very small in the end-pumped configuration. A classical...
With the increase in volume, heterogeneity and uncertainty in data, conventional analytics approaches for monitoring users behavior in organisations are no longer sufficient for the effective and reliable detection of malicious activities. This motivates the need for introducing additional analysis techniques. This paper introduces an intelligent fusion method based on fuzzy aggregation functions...
This study designs a small arrayed Ultraviolet Light Emitting Diode (UV LED) curing system, using automatic electric power control circuit to drive 3 modules and 6 modules UV LED in wavelength of 365 nm and 385 nm, which is applicable to all sided adhesive material curing. The power output is controlled stably by the automatic electric power control circuit, so that the electric power is controlled...
Transmit beamforming is of great important processing for multiple-input multiple-output (MIMO) radar in practice. In this paper, a waveform covariance matrix design method is proposed to control the transmitted power flexibility in the region of interest. This scheme with optimized waveform covariance matrix enjoys the enlarged degrees-of-freedom (DOFs) without sacrificing signal-to-noise ratio (SNR)...
The testing and verification is an important means to ensure the quality of GNSS receivers, which is essential in all stages of R&D. The hardware design and algorithm of high precision GNSS RF record & playback system are introduced in this paper. This system had been applied to acceptance test of Beidou2 high precision receivers and the chips in 2015. The system achieved 16bits(I&Q) bit...
In the era of deep learning, although beam-forming multi-channel signal processing is still very helpful, it was reported that single-channel robust front-ends usually cannot benefit deep learning models because the layer-by-layer structure of deep learning models provides a feature extraction strategy that automatically derives powerful noise-resistant features from primitive raw data for senone...
In this paper, we investigate the local stability of a flat-foot limit cycle walking model with compliant ankle joints, and analyze the effects of ankle stiffness and foot inertial and geometric parameters on disturbance rejection. These results can provide a further understanding of local behaviors of different phases in one step and guidelines for stiffness control and flat foot design towards stable...
We report generation of 1.15-mJ/pulse energy at 1064 nm from a single-transverse-mode Nd:YAG laser pumped by 13-mJ energy in a 1-ms pulse width from an array of 750-nm LED dies.
Quantum key distribution protocols use quantum information theories to guarantee the security of key exchange procedure, and model checking is a verification technique which could be used to test the security of it. In this paper, a new group quantum key distribution protocol is designed based on BB84 protocol, which is a possible solution to handle the security issue in communication between multi-users...
In this paper, we employ a two-dimensional dynamic bipedal walking robot to investigate the effects of controllable stiffness and limb coordination on speed transition of bipedal walking. The robot is equipped with a variable stiffness actuator at each joint. We proposed a central pattern generatorbased control method to implement limb coordination and realize independent control of torque and stiffness...
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