It is anticipated that 6G wireless networks will accelerate the convergence of physical and cyber worlds enable a paradigm-shift in way we deploy exploit communication networks. Machine learning - particular deep (DL) expected to be one key technological enablers by offering new paradigm for design optimization with high level intelligence. In this article, introduce an emerging DL architecture, known as transformer, discuss its potential impact on network design. We first differences...

This paper focuses on the multi-dimensional performance analysis including oxidation performance, crystal morphology, thermal properties, mechanical properties and dielectric behavior of thermally aged extra high voltage XLPE submarine cable insulation. Results show that antioxidation oxidative aging insulation are coexisting competing during degradation process. In early stage degradation, is dominant resulting in decline spacing between spherulites. later dominant, which leads to damage...

Cross-linked polyethylene (XLPE) has been widely used as insulation material for cables. In 2019, the highest voltage level AC 500 kV XLPE submarine cable operated in Zhoushan, China. The irreversible degradation poses a safety hazard to operation of cable. Therefore, it is necessary investigate physical, chemical and electrical properties under aging condition explore method its deterioration degree assessment. this paper, was thermally aged at 130 °C. characteristics materials were...

The capacity of commercial massive multiple-input multiple-output (mMIMO) systems is constrained by the limited array aperture at base station, and cannot meet everincreasing traffic demands wireless networks.Given aperture, holographic MIMO with infinitesimal antenna spacing can maximize capacity, but physically unrealizable.As a promising alternative, reconfigurable mMIMO proposed to harness unexploited power electromagnetic (EM) domain for enhanced information transfer.Specifically, pixel...

A simple and ultrasensitive method for detecting Pb 2+ using resin-enrichment combined with laser-induced breakdown spectroscopy assisted by fluorescence.

Carrying out the insulation condition measurement and analysis is important for safe operation of submarine cable. In this study, high‐voltage frequency dielectric response used to identify ageing state AC 500 kV cross‐linked polyethylene (XLPE) The complex capacitance tan δ in low‐frequency area new, thermal ageing, electro‐thermal cable all increase with testing voltage increased from 200 2000 V. It founded that at high more likely detect differences. Based on carbonyl index loss XLPE...

It is technically challenging to maintain stable tracking for multiple-input-multiple-output (MIMO) nonlinear systems with modeling uncertainties and actuation faults. The underlying problem becomes even more difficult if zero error guaranteed performance pursued. In this work, by integrating filtered variables into the design process, we develop a neuroadaptive proportional-integral (PI) control following salient features: 1) resultant scheme of simple PI structure analytical algorithms...

This paper reported a real-time detection strategy for Hg2+ inspired by the visible spectrophotometer that used smartphone as low-cost micro-spectrometer. In combination with smartphone’s camera and optical accessories, phone’s built-in software can process received light band image then read out spectral data in real time. The sensor was also to detect gold nanoparticles an LOD of 0.14 μM, which are widely colorimetric biosensors. Ultimately, nanoparticles-glutathione (AuNPs-GSH) conjugate...

To provide seamless coverage during all flight phases, aeronautical communications systems (ACS) have to integrate space-based, air-based, as well ground-based platforms formulate aviation-oriented space-air-ground integrated networks (SAGINs). In continental areas, L-band broadband (ABC) are gaining popularity for supporting air traffic management (ATM) modernization. However, ABC faces the challenges of spectrum congestion and severe interference due legacy systems. circumvent these, we...

When a single-phase grounding fault occurs in resonant system, the determination of location remains significant challenge due to small current and instability arc. In order solve problem low protection sensitivity when high-resistance this paper proposes method based on combination dynamic time warping (DTW) distance fuzzy C-means (FCM) clustering. By analyzing characteristics zero-sequence upstream downstream point it is concluded that waveform similarity both sides low. DTW can be used...

Abstract Temporal and spatial variations in the ocean surface mixed layer are important for climate ecological systems. During 1980–2019, Southern Indian Ocean (SIO) depth (MLD) displays a basin‐wide shoaling trend that is absent other basins within 40°S–40°N. The SIO MLD mostly prominent austral winter with deep climatology MLD, substantially weakening seasonality. Moreover, changes primarily caused by southward shift of subtropical anticyclonic winds hence gyre, associated strengthening...

Robotic meat cutting is increasingly in demand industries due to safety issues, labor shortages, and inefficiencies. This paper proposes a multi-demonstration human–robot skill transfer framework address the flexible generalized of sheep hindquarters with complex 3D anatomy structures by imitating humans. To improve generalization sizes demonstrations extract target behaviors, multi-demonstrations are encoded into low-dimension latent space through principal components analysis (PCA),...

Abstract Quantized signal control has been widely recognized as an effective means for conserving communication resources. However, ensuring stability of quantization‐driven nonlinear systems becomes particularly challenging in the presence intermittent denial‐of‐service (DoS) attacks and sensor failures. This article explores stable problem quantized subject to DoS attacks. When attack exists, all signals are unmeasurable. During dormant phase a attack, only output is measurable, while...

Quantized signal-driven control for nonlinear systems is of special interest in practice. However, it nontrivial the presence mismatched uncertainties and intermittent denial service (DoS) attacks. The underlying problem becomes even more complicated when both input output signals are attacked, rendering state variables signal inaccessible or unavailable design. Only quantized (and thus nondifferentiable) available absence attack, making regular backstepping design inapplicable. This article...

A nanoantenna that consists of a pair perpendicular diabolo metal elements with common central junction is proposed for creating magnetic field enhancement. It shown such can generate single hot spot any polarization state in near-infrared frequency range, strongly confining and enhancing under less restrained conditions. The spectral response the be tailored as will by altering its geometric parameters. Moreover, this cross-diabolo preserve character in-plane dipole far-field patterns high fidelity.

Abstract Many important engineering systems can be classified as Euler–Lagrange (EL) systems. In this work we develop a new Proportional‐Integral‐Derivative (PID) ‐based tracking control solution for uncertain EL subject to actuation failures and saturation. Two set of algorithms are developed using robust adaptive neuroadaptive methods, which shown exhibit several salient features: (1) the schemes PID form, hence is characterized with simplicity in structure intuition concept; (2) gains...

This article presents a neuroadaptive fault-tolerant control method for path tracking of multiinput multioutput (MIMO) systems in the presence modeling uncertainties and external disturbances. In dealing with uncertainties, neural networks (NNs) diversified activation/basis functions are considered, which we establish set algorithms that robust against adaptive to unknown parameters, tolerant actuation faults. is first work explicitly takes into account weights activating function multiple...

As a complex movement, Tai Chi (TC) could be challenging for knee control, and the compensatory changes in TC biomechanics of pain patients are unknown. The Brush Knee Twist Step (BKTS) is typical movement that involves basic leg motion repeated whole TC. This pilot study examined electromyography retro-reflective marker trajectory data to investigate neuromuscular control strategies lower extremity during BKTS practitioners with without pain. Twelve experienced (n = 6) participated. Our...

With the rapid rise of new energy industry and its development all over world, there is a great market for submarine cable products. The world's first class AC 500kV cross-linked polyethylene (XLPE) insulated will soon be put into operation in "Zhoushan-Ningbo" interconnection project. Aging insulation materials after an important factor restricting safe XLPE cable. Taking consideration that frequency domain spectroscopy (FDS) nondestructive testing (NDT) method, this paper, changes...