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A method for single odor source declaration (OSD) based on mass flux criterion in three-dimensional (3D) airflow environments is proposed. Gas and wind sensor nodes are placed at the four vertices of a regular tetrahedron. To compute the total mass flux of each regular tetrahedron surface, the gas concentration and wind vector at every grid of four surfaces are estimated according to the sensors information...
The impact of polysilicon thickness (THK-poly) and channel hole diameter (CHCD) on channel boosting potential during program inhibit has been studied with Sentaurus device simulator for three dimensional (3D) NAND memory. According to the distribution of boosting potential along the channel, the potential level of thinner THK-poly is higher than that of thicker one. Moreover, the correlation between...
Single drain select transistor (DSL) in 3D Flash memory may exhibit higher leakage as compared with DSL in 2D NAND, because of worse subthreshold swing characteristics due to poly-Si channel. Select transistor leakage suppression is essential in 3D NAND Flash Memory, in consideration of boosting potential and program disturbance. Compared to single Si drain select transistor in 2D planner Flash Memory,...
A comprehensive simulation analysis method is proposed to improve the bottom select gate (BSG) transistor's Vth distribution by adopting under-channel implant in this work.
Characterizing the fluctuations properties in wind speed signals is a significant problem in the field of nonlinear dynamics and aerodynamics. In this paper, firstly, to fully capture the details of the wind field fluctuation, a 3D ultrasonic anemometer is selected to measure the wind speed data in a short-term wind field experiment. Then, we employ the multifractal detrended fluctuation analysis...
Characterizing nonlinear dynamic behaviors in the 3D near-surface wind field is a challenging problem of significant importance. The study of pollutant transport, wind power evaluation, forest damage assessment, among others, would benefit from this research. In this paper, we first use a high-resolution 3D ultrasonic anemometer to simultaneously measure three wind components. Then the multiscale...
Uncovering dynamics characteristics of 3D wind field is of great importance to understand the mechanisms of gas dispersal and provides useful clues for the optimization of gas source localization algorithms. In this paper, we first use a high precision 3D ultrasonic anemometer to collect the three orthogonal wind speed components and calculate corresponding instantaneous wind speed. Then we employ...
Characterizing the time series measured from different flow environments is of great importance in diverse research fields. In this paper, we first systematically record three groups of 3D wind speed data from indoor and outdoor environments separately. Then, we employ a modality transition-based approach for mapping the experimental multivariate data into a directed weighted complex network. For...
The magnitude and sign of a time series measured from physical process contain rich information about the dynamical mechanisms. In this paper, we study the scaling properties of the magnitude and the sign from the small-scale wind speed fluctuations using the detrended fluctuation analysis (DFA), and show the impact of sampling frequency on their scaling properties. We find long-range positive correlations...
Better understanding of boundary-layer wind field is fundamental for modeling of various wind-related phenomena, e.g., gas dispersal and energy generation. In this paper, we first record three groups of the near surface wind speed time series in different locations using a high-resolution 3D ultrasonic anemometer. Then, we map these experimental time series into complex networks and detect the corresponding...
In this paper, we perform 3-Dimensional (3D) clustering based on the Outdoor-to-Indoor (O2I) wideband 3D multiple-input-multiple-output (MIMO) channel measurement at 3.5 GHz. Clusters are identified by KPowerMeans algorithm. Based on analysis on clustering results, we modified the definition of Multiple component distance (MCD) to split the bounding of azimuth and elevation, which can obtain larger...
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