The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Throughput prediction is one of good solutions to improve quality of mobile applications (e.g., YouTube or Netflix) for video streaming delivery services in mobile networks. This is because such applications require monitoring the network performances to control content quality, thus guarantee quality of service (QoS) and quality of experience (QoE). In this paper, we propose a history-based TCP throughput...
In this paper, we performed human moving pattern recognition using communication quality: cellular download throughputs, Received Signal Strength Indicators (RSSIs) and cellular base station IDs. We apply three machine learning algorithms, such as Support Vector Machine (SVM), K-Nearest Neighbor (KNN) and Random Forest (RF) and evaluate recognition accuracy of human moving patterns. Results conclude...
Benefited from the flexibility of Smart Grids, various dynamic lightning protection and Artificial Intelligence-based lightning protection methods become available. Based on Artificial Intelligence technologies, the paper proposes a method of lightning-caused faults forecasting for Smart Grid distribution systems. A self-balancing dynamic lightning protection, which assists the self-healing function...
In this paper, a robust visual tracking system with occlusion handling is proposed to track the target with real-time performance. The thermal camera, which can observe the heat originated from the target such as the human body or vehicle, can collaborate with the color camera to track the target in the cluttered environment or under occlusion. Unlike the general tracking by using the color camera...
In this paper, a robust visual tracking system by utilizing the images acquired from a color camera and a thermal camera is proposed to track the target with real-time performance. The thermal camera, which can observe the heat originated from the target such as the human body or vehicle, can collaborate with the color camera to track the target in the cluttered environment or under occlusion. Unlike...
This paper focuses on the synchronization of coupled harmonic oscillators based on edge-event-triggered control. With periodic event detection and quantization, an edge-event-detecting algorithm is developed to determine the event times of each oscillator. In the proposed protocol, only relative state information is utilized to update all controllers, and the edge events are asynchronous with respect...
To do software testing of a large-scale and high-complexity security-critical software system is a difficult task in engineering practice. In this paper, a software system testing method based on formal model is proposed. Firstly, the software function, performance and interface were abstracted, and gave the formal definition of software system. Secondly, different strategies of cue analysis were...
This work presents a novel approach for audio event recognition. The approach develops a weighted kernel fisher sparse analysis method based on multiple maps. The proposed method consists of maps extraction and kernel weighted Fisher sparse analysis. Two maps are firstly extracted from each audio file, i.e. scale-frequency map and damping-frequency map. The scale and frequency of the Gabor atoms are...
The beamforming technique usually employs multiple sensors or sensor array to enhance receiving signals such that the generalized sidelobe canceler (GSC) is commonly applied for eliminating interfering signals. In this paper, a new direction-of-arrival (DOA) estimation method is studied for the GSC with a moving terminal in the arrayed wireless sensor network. In our simulations, the beamformer's...
An atomic-scale numerical study of Si contact with transition metal dichalcogenides (TMD) semiconductor materials is proposed by first-principles simulation for the first time. The monolayer MoS2 channel can be operated as both of n- and p-type FET by properly doping Si S/D to adjust the TMD channel potential. The gradient MoSx junction of dichalcogenide vacancies enables Si-MoS2 contact resistance...
This research proposes a novel Bayesian sparse representation (BSR) method along with extracting facial parameters of SIFT to create sparse dictionaries, which are invariant to rotation, scale, and shift. By using K-means and information theory, a new dictionary called extended dictionary is developed. Compared with conventional orthogonal matching pursuit (OMP) algorithm, the proposed system that...
The Gibbs free energy released during the mixing of river and sea water has been illustrated as a promising source of clean and renewable energy. Reverse electrodialysis (RED) is one major strategy to gain electrical power from this natural salinity, and recently by utilizing nanochannels a novel mode of this approach has shown improved power density and energy converting efficiency. In this work,...
The ion selectivity of nanochannel due to the wall surface charges is capable of inducing strong coupling between fluidic and ionic motion within the system, which has been overlooked in the study of nanofluidics. This interaction opens up the prospect of operating nanochannel as nanoscale devices for electrokinetic energy conversion. However, the very short channel lengths make the ionic movement...
Conventional Phase Difference method pinpoints the PD location by analysing the phase difference of the primary arriving signals at both terminals in power cable, however it lacks consideration of signal separation in noisy environment and fails to ensure location accuracy when defect is close to cable end. Based on the analysis of PD pulse propagation character in cable system presented in the first...
Modern interconnected power grid requires comprehensive and efficient on-line monitoring system to ensure the reliability and stability of the whole power system. This paper firstly introduces the structure and deficiency of traditional monitoring system. Then, relying on high precision operating parameters collected by Phase Measurement Unit (PMU), an improved on-line monitoring method is proposed,...
This work studies the mechanism of identical photo-induced leakage current in a-InGaZnO4 thin film transistors during reverse gate voltage sweep. There is the identical off-state current with the reverse sweep under UV light irradiation, and the photocurrent for UV light exposure region near the source electrode is more significant than that near the drain electrode, which is different from photocurrent...
In this letter, we investigated a new interface-type conduction mechanism in ITO/Ga2O3:ITO/TiN resistance random access memory induced by varying forming current compliance. This conduction showed a typical bipolar resistive switching (RS) and a size effect experiment was applied to confirm that the conduction mechanism was an interface-type when forming current compliance was set below 1mA. Current...
This paper studies the degradation behaviors in IV characteristics and the corresponding improvement for p-channel double diffused drain metal-oxide-semiconductor (DDDMOS) transistors after hot carrier stress (HCS). There is an apparent current which is flowed from source to drain in the off-region after HCS. According to the IV characteristic comparisons between different device structures and ISE-TCAD...
This letter investigates the effect of negative bias stress induced abnormal degradation in amorphous InGaZnO thin-film transistors (TFTs) at high temperature. Drain current-gate voltage (ID-VG) and capacitance-voltage (C-V) measurements are employed to analyze degradation mechanism. High temperature negative bias stress lead to not only a negative parallel shift in ID-VG but also a C-V distortion...
Throughput prediction contributes a lot to adaptive bitrate control, adjusting the quality of video streaming accordingly to offer smooth media transmission and save energy at the same time. To solve the problem of throughput prediction for real time communication, this paper puts forward a new history-based throughput prediction method applying Hidden Markov Model in mobile networks. The main purpose...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.