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Skeleton-based human action recognition has recently attracted increasing attention due to the popularity of 3D skeleton data. One main challenge lies in the large view variations in captured human actions. We propose a novel view adaptation scheme to automatically regulate observation viewpoints during the occurrence of an action. Rather than re-positioning the skeletons based on a human defined...
In these years, the wind power integration capacity has increased a lot, and the issue of wind curtailment has become more serious for lack of adequate flexible energy sources. To find out whether the nuclear power plant (NPP) in the present power system can solve this issue, this paper proposes a joint operational optimization model that includes the NPP, wind power plant, thermal units and pumped-storage...
Recently there have been many efforts to study the predictability of stock market trend using post sentiments on social media sites. These studies have mainly focused on US stock market. In this paper we investigate the relationship between stock price movement and social media sentiment in China, which has a large stock capitalization and a unique social media landscape. We collect data from several...
This paper proposes a novel feeding structure for exciting the second higher order leaky mode of microstrip antenna. By properly designing the three excitation points at the input port, the second higher order leaky mode can be purely excited. The fundamental and first higher order leaky mode cannot be excited due to the unequal power amplitude and phase at different excitation points. The prototyped...
This paper addresses the formation keeping of a network of Port-Controlled Hamiltonian(PCH) AUV multi-agent systems. The objective is solved by interconnecting agents with virtual couplings based on the internal principle, which can look into the energy consumption. Firstly, the controller for tracking estimated velocity is designed by ultilizing Hamiltonian theory. We assume that the desired velocity...
Many robotic tasks require heavy computation, which can easily exceed the robot's onboard computer capability. A promising solution to address this challenge is outsourcing thecomputation to the cloud. However, exploiting the potential ofcloud resources in robotic software is difficult, because it in-volves complex code modification and extensive (re)configurationprocedures. Moreover, quality of service...
The rapid development of cloud computing service allows data and computation intensive applications to be easily moved into cloud. Users pay for computing and storing resources to deal with their data in the cloud, therefore how to manage those resources has become an important issue. In order to satisfy different demands of users, various storage strategies have been proposed. Aiming at presenting...
Most current droplet microfluidic devices are limited to processing one single sample or one single assay in a single device due to inconvenient sample loading and unstable droplet generation when switching inputs. In order to maximize the capability of a single droplet device, we have developed a novel nanoliter-picoliter (nL-pL) device capable of handling multiple samples and assays. Our device...
Precise timing by the technique of GNSS common view is proven to be an effective technique with the accuracy of nanosecond level in real-time mode. The timing technique of carrier phase is also applied in post mode with the accuracy of sub-nanosecond level, but the real-time mode still has little explicit research. In this study, we develop the precise timing algorithm of carrier phase to investigate...
We develop an efficient data fusion algorithm for field reconstruction of multiple physical phenomena, which exhibit multiple modalities each with complex dependence behavior. In particular, we design a novel spatial model where multiple latent processes are modelled as Multi-Output Gaussian Process. We encode a linear dependency structure through a specified covariance function in both space and...
Modern network functions (NFs) are able to scale out conveniently with the help of network function virtualization (NFV). When network traffic rises, NFV can provide more instances easily for migrating network flows to new instances to balance the traffic on the existing ones. However, the main challenge is to select which subset of existing flows to migrate when scale out, minimizing the negative...
The reasonable transmission efficiency of power grid was analyzed considering to N−1 and power outrage risk constraint respectively in this paper. The representative index of security and efficiency had been selected to reflect the condition of power grid. In the aspect of security, the N−1 Pass ratio represented the determinacy index and the power outage risks represented a non-determinacy index...
Seal is one of the most important characteristics for cylinders and suitable seal configuration will guarantee the long life cycle of the seal and the cylinder. Experiment is the only way which can demonstrate the best seal configuration in applications. In this paper, one approach is brought forward for testing the seal performance of cylinders with different seals configurations at the same load...
Multi-objective optimization problems with interval (MOPs-I) uncertainties parameters are common in practice. Evolutionary multi-objective (EMO) algorithms are popularly employed to solve these problems due to their powerful explorations. The comparison strategies among interval objectives of MOPs-I are crucially important for obtaining a superior Pareto front when applying EMOs. By effectively combining...
This paper considers the stabilization problem of an underactuated surface vessel with the roll. First a state transformation is proposed to facilitating the calculator. Then we proposed a time-varying control law to make the states of the vessel asymptotically stable. At last the simulation indicates that the transformation has the advantage and the control law is effective.
Honeycomb-structured porous films have widely potential applications in chemical sensors, tissue engineering, micro reactors, catalysis and so forth. An enhanced breath figure method with spraying ultrasonic atomized water droplets replacing the water vapor in humidity is proposed to fabricate multi-level and large-area breath figure patterns (BFPs). Well-defined polyphenylene oxide honeycomb films...
Network troubleshooting is always a tough and daunting task for network operators to struggle with, due to difficultly observed network state, large network size and limited tools such as ping and traceroute. Software-defined networking (SDN) brings us the centralized network control and the customized network management over the entire network, which enables new ways of network troubleshooting. Previous...
A compact Line Source Generator (LSG) consisting of a flat lens is proposed in this paper. The flat lens is used to transform a cylindrical wavefront generated by the horn to a planar wavefront which provides a uniform phase distribution in the output aperture. Unlike the conventional convex lens whose design is based on Geometrical Optics (GO), the flat lens is designed based on the Field Transformation...
This paper presents a 6-bit phase shifter with a low root-mean-square (RMS) phase error and a flat gain across 1.9–2.6GHz. An input balun which utilizes a differential signal correction system consisting of two capacitor-cross-coupled (CCC) pairs and one CCC buffer is realized to ensure good phase and amplitude balance. Based on the relationship of the W/L of DAC cells, an encode rule which makes...
Image segmentation, which usually employs a statistical model, is an essential step in synthetic aperture sonar (SAS) image processing. This work addresses the Rayleigh mixture model (RMM), representing SAS underwater amplitude image. High resolution SAS image of detected artificial object is segmented using RMM and Markov random field (MRF) model. We present a quick unsupervised iterative method...
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