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We demonstrate that generalized Weyl points can exist in a parameter space and we report the first observation of such nodal points in one-dimensional photonic crystals in the optical range. The reflection phase inside the band gap of a truncated photonic crystal exhibits vortexes in the parameter space where the Weyl points are defined and they share the same topological charges as the Weyl points.
This paper investigates the formation control of the multi-agent with single-integrator kinematics in the plane, and presents a new method which could guarantee the agent to realize the arbitrary prescribed formation, furthermore, locations of the agents in the formation can be arbitrary arranged as what we expected. Our method is generalized as follows: Firstly, a consensus control protocol is designed,...
Recently deep neural networks have been widely employed to deal with the visual tracking problem. In this work, we present a new deep architecture which incorporates the temporal and spatial information to boost the tracking performance. Our deep architecture contains three networks, a Feature Net, a Temporal Net, and a Spatial Net. The Feature Net extracts general feature representations of the target...
In this study, a deep denoising recurrent temporal restricted Boltzmann machine network is proposed for long-term prediction of time series. The network is a deep dynamic network model which is stacked by multiple denoising recurrent temporal restricted Boltzmann machines with strong modeling ability for complex high noise time series data. To better deal with high noise data, a random noise is added...
In this paper, we study the 2-adic complexity of Whiteman's generalized cyclotomic sequences of order 4 with length pq, where p, q = 1 (mod 4) are distinct primes. We prove that the 2-adic complexity of this class of sequences is lower bounded by pq − p − q − 1.
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...
Pluggable optics can potentiallly fuel the optical transport network in a more efficient and manageable manner. To enable this revolutionary packet-optical engine, integrated photonics seems to be the only possible solution. We introduce the latest industry trend of pluggable optical module form factors, and review the latest progress and challenges of pluggable optics products. Furthermore, we discuss...
The acceptor-rich ultra-thin-wall ed ZnO microtubes were fabricated via a novel technique. It exhibited unusual properties in electronics and optics, e.g. rich shallow Zn-vacancy-related acceptors, temperature-dependent photoluminescence and wave-guided whispering-gallery-modes lasing.
BER versus OSNR curve at different receiver optical power (ROP) can be accurately predicted from simple BER versus ROP measurement. Furthermore, OSNR is estimated from pre-FEC BER at different ROP level.
We report a novel intracavity trace gas sensor by merging photoacoustic spectroscopy and an erbium doped fiberring laser to achieve a noise-equivalent absorption coefficient of 3.25×10−7 cm−1Hz−1,2 for acetylene detection.
Big Data and intelligent agent challenges involve various aspects of large-scale data utilization. Addressing these challenges require advanced methods and tools to capture, manage, and process the data. It's very meaningful to apply big data and intelligent agent technologies to smart grid. In this paper, we propose a reference architecture for big data systems in the smart grid application domain...
This paper proposed a method of real-time route planning for UAV based on model predictive control (MPC) and threat gain fuzzy controller (TGFC). First the model of three-dimensional route planning of UAV was built by MPC, including complex constraints. Then the TGFC was designed based on fuzzy control theory, in order to make UAV escape from the sudden threat quickly. Finally the route was calculated...
In this paper, we consider secure transmission for the full duplex relay network. Aiming to improve the physical layer security, we propose a full duplex hybrid relaying-and-jamming (FDHRJ) scheme. In the FDHRJ scheme, we design a pre-coding matrix to form a jamming signal and let the relay simultaneously transmit both the desired signal and the jamming signal every slot. The destination can decode...
This paper investigates the secrecy performance of half-duplex relay networks. First, we establish a relay broadcasting wiretap channel model using a half-duplex relay with multiple antennas and derive the instantaneous secrecy capacity of this system. With convex optimization, the upper bound on the capacity region is provided. Second, we give the expression for the ergodic secrecy rate and analyze...
Device-to-device (D2D) underlay communication has attracted substantial research attention recently owing to its potential to enhance the network throughput. However, the caused intra-cell interference is quite a challenging issue in D2D underlaying cellular network. In this paper, we investigate the joint power control and resource allocation problem to improve the system performance in such a scenario...
Recently reported optical pulse generators may suffer from large pedestal, large duty cycle, bias drift and/or high-power consumption [1, 2]. Besides, each injected CW laser merely results in pulse on one wavelength using these schemes, which is uneconomical. In this study, we propose a multi-wavelength pedestal-free Gaussian optical pulse generator with low duty cycles on wavelengths twice the number...
We propose a block-based sampling method (I-sampling) which randomly selects the base data blocks from the block pool of a large-scale dataset rather than directly chooses records from the original dataset. I-sampling firstly partitions the given large-scale dataset into the non-overlapping primary data blocks. Secondly, the records in each primary data block are randomly shuffled and the corresponding...
In recent years, D2D communication technology has been widely used in cellular networks. By introducing D2D users, cellular networks can improve the efficiency of using resources, which can improve the quality of communication. In the system where both D2D users and cellular networks users exist, we studied the method how every user is introduced into the cellular networks to improve the resource...
Deep cone thickener control problem is a key point of Tailings paste fill (TSF). This paper presents a new method to extract inherent and practical parameters of the thickener, and determine control strategy based on thickening process data mining. Bypassing difficulty in deep cone thickener modeling, the proposed method could obtain practical control rules, also has good adaptability to different...
Human-like musculor-skeletal arm model with its unique smooth and natural movements as well as low energy cost has attracted many researchers' interests and developed rapidly nowadays. In this paper, we focus on a human-like musculor-skeletal arm model with three links driven by nine muscles and propose a control model with two neurocontrollers trained by the NEAT algorithm. The NEAT (Neuroevolution...
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