The integration of gaze/eye tracking into virtual and augmented reality devices has unlocked new possibilities, offering a novel human-computer interaction (HCI) modality for on-device extended (XR). Emerging applications in XR, such as low-effort user authentication, mental health diagnosis, foveated rendering, demand real-time eye at high frequencies, capability that current solutions struggle to deliver. To address this challenge, we present EX-Gaze, an event-based system designed...

Considering the issue of privacy leakage and motivating more sophisticated protection methods for air-typing with XR devices, in this paper, we propose AirtypeLogger, a new approach towards practical video-based attacks on activities users virtual space. Different from existing approaches, AirtypeLogger considers scenario which are typing short text fragment semantic meaning occasionally under spy video cameras. It detects localizes events streams proposes spatial-temporal representation to...

Rotational speed is one of the important metrics to be measured for calibrating electric motors in manufacturing, monitoring engines during car repairs, detecting faults electrical appliance and more. However, existing measurement techniques either require prohibitive hardware (e.g., high-speed camera) or are inconvenient use real-world application scenarios. In this paper, we propose, <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Due to the renewable generation target and continuously increasing electrical demand, a large number of wind farms solar photovoltaic (PV)plants are being planned in China. As electricity fault characteristics inverter-interfaced energy sources different from traditional synchronous generators. The circuit contributions getting more attention engineers. In this paper, short-circuit calculation method considering dynamic reactive power support systems is proposed. Through calculations,...

A new kind of wind/photovoltaic(PV) hybrid generator was designed for effectively and reliably utilizing the renewable resources. It to be an auto-interference controller. To capture wind light in greatest degree, method nonlinear transform aerodynamic force used, as well theory brushless double-fed principle extremum control on solar inverter were adopted. The hierarchical fuzzy controller algorithm presented controlling loading unloading generators, cells grid, considering multi-input...

In case of three-phase short circuit fault occurring at the terminal a doubly-fed induction generator (DFIG), rotor current characters DFIG are analyzed from viewpoint flux linkage, and expression is deduced together with estimated maximum current. Based on above analysis, max currents their appearing times different Crowbar resistances found, appropriate resistance value set for 1.5 MW DFIG. The low voltage ride through (LVRT) effects drop out compared by simulations, simulation results...

Orthogonal frequency division multiplexing (OFDM) has been adopted by many high speed transmission standards. Pilot tone assisted modulation (PTAM) is a well known technique to estimate the channel state information (CSI) in OFDM but not bandwidth efficient. To achieve efficiency, we propose carry out superimposed training with techniques described this paper improve quality of CSI estimate. It that signals have peak-to-average power ratios (PARs) and are thus employ blind selected mapping...

Wind power predication is significant for the safety and stability of system operation. Due to forecasting single model or combination without considering information fusion influence error on dispatching, results are not accurate enough. In paper, a novel wind with evaluation parameter based cross entropy theory proposed. prediction seen as fusion, weights different methods set according their levels. Besides, an also proposed estimate influences positive negative scheduling. Application in...

Objectives: Public transport vehicles (PTVs) play a decisive role in development of the urban economy. However, safety PTVs is threatened by man-released chemical or arson attack. It was found that indoor air can be greatly improved employing air-rain ventilation instead common PTV.Methods: Numerical simulations and experiments have been done to prove effectiveness flow against attack PTVs.Results: The research shows that, during attack, an 0.1 m/s constrain spread agent very limited zone...

A new control scheme of grid-side PWM converters for wind power generation systems, incorporating exact feedback linearization with sliding mode variable structure strategy, is proposed in this paper. An affine nonlinear model three phase voltage source converter the rotating frame d-q obtained. The active and reactive decoupled using technique. sliding-mode algorithm then applied converter. Finally, simulation results show presented effective.

With the expansion of power system scale, faults equipment under extreme weather may result in large area blackout. To keep security and stability systems, researchers have proposed proactive fault probability prediction models to mitigate risks large-scale failures advance. Power can be divided into three different categories. The probabilistic are mechanism-based models, data-driven hybrid models. Additionally, application various relevant disaster domains also summarized. aim this paper...

Abstract Supercritical water reactors will continuously produce fine particulate matters during operation and accident conditions, the deposition movement of these are likely to cause deterioration heat transfer, which affect transfer safe reactor. The grey correlation analysis method is used calculate analyze matter concentration distribution at different heights supercritical reactor coolant channel model. temperature, axial velocity turbulent kinetic energy their respective weights in...