Aiming at the traditional fatigue driving detection system with a single function, unable to locate face, greatly affected by external lighting factors and high hardware requirements, this design proposes that uses OpenMV equipped CMOS camera as main controller, recognizes face contour using Haar classifiers, controls two-dimensional gimbal realize localization MCU slave, utilizes read blinking frequency per time unit determine driving. The microcontroller is captured judge driving, when...

We report for the first time two radar measurements ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Ji Mo 2008</i> and xmlns:xlink="http://www.w3.org/1999/xlink">Min Qin 2009</i> ) on natural soil surfaces under large roughness, which were conducted by China Research Institute of Radiowave Propagation (CRIRP). The desired HH VV polarization backscatter data measured a truck–mounted scatterometer, operates at L-, S-bands (i.e., 1.34 3.2 GHz,...

Influence of frequency, incident angle, soil dielectric on backscattering coefficient from cropland is analyzed. By using Small Slope Approximation (SSA) method, we calculate with different frequency and polarization, compare the results experimental data. In addition, Morchin model Ulaby Model are introduced to examine numerical SSA.

Complex-terrain clutter presents serious nonuniformity, which has a significant impact on radar target detection, communication, and navigation. The accurate acquisition of the characteristics by measurement or calculation for large complex terrains always posed challenge due to high costs measurement, as well intricate diverse environmental factors. To address this challenge, we proposed research methodology that leverages similarity multidimensional terrain features infer unmeasured...

Abstract The viability of synergistic preparing refractory material from ferronickel slag (FNS) and ferrochromium (FCS) has been confirmed based on the phase microstructural transformation behavior FNS FCS during sintering process in this research. thermodynamic analysis results have shown that increasing magnesia additions at varying FCS/(FCS+FNS) ratios can result development high‐melting‐point phases. thermogravimetric‐differential thermal analysis, expansion tester, X‐ray diffraction,...

Precisely predicting vegetation backscatter involves various challenges, such as complex structure, soil–vegetation interaction, and data availability. Deep learning (DL) works a powerful tool to analyze approximate the nonlinear relationship between variables, thus exhibiting potential applications in microwave scattering problems. However, few DL-based approaches have been developed reproduce backscatters owing lack of acquiring large amount training data. Motivated by relatively accurate...

This study evaluates the agricultural carbon emission efficiency of Shandong Province from 2011 to 2020 using DEA-SBM model. The nexus between endogenous and exogenous variables is estimated Tobit findings reveal an overall increasing trend in emissions, with significant variations values among different cities, leading a severe polarization. Spatial evaluation shows high distribution central region low eastern western regions Province. empirical tests conducted for its three indicate that...

Magnetic tunnel junctions (MTJs) with the layer structures of Ta (5 nm)/Al(20 nm)/Ni/sub 79/Fe/sub 21/(5 nm)/Ir/sub 22/Mn/sub 78/(10 nm)/Co/sub 75/Fe/sub 25/(4 nm)/Al(0.8 nm)-oxide/Co/sub 21/ (20 nm)/Ta(5 nm) were fabricated using Al as a conduction layer/electrode and lithographic methods. A high magneto-resistance ratio 16% 45% resistance-area product RS 11.8 k/spl Omega//spl mu/m/sup 2/ 11.6 in as-deposited state after annealing attained at room temperature. After annealing, coercivity...

This paper proposes an adaptive method to modify network delay caused by clock skew. First, we introduce the concept of end-to-end delay, and then propose a which aims at eliminate effect cause difference frequency. The first denoises data set remove error points, uses Least Square Method estimate skew in distributed network. Finally, modifies modification term according Our algorithm calculates updates currently, adaptively adjusts term. experimental results show that can effectively...

In this paper, an aerated concrete slag material was first applied on roofs, and the transient heat transfer of improved thermal insulation roof simulated using ANSYS. Moreover, performance evaluated. Meanwhile, PBECA used to calculate energy consumption building. Research shows relationship between maximum value inner surface temperature fluctuation thickness layer in Wuhan, Changsha Nanjing is: y = −0.0148x + 1.9649, −0.0202x 2.6809, −0.0181x 2.3994, respectively. After optimisation roof,...

In this letter, a new method is presented to suppress fractional pseudocodewords by eliminating small instantons of irregular low-density parity-check (LDPC) codes under the linear programming (LP) decoding over binary symmetric channel (BSC). By appending several rows found integer formulation original matrix, optimal distribution spectrum BSC-instantons in modified code obtained. Simulation results show that proposed can improve distance matrices and considerably enhance error-correcting...

With the S-band sea clutter data measured by radar located on a cliff top employed, this work compares amplitude characteristics of in and X-band (IPIX data). On basis, difference spike properties between two bands is analyzed both time frequency domain. The identification method from background uses amplitude, minimum width interval spikes, as three qualitative parameters. Comparing with X-band, specificity spikes presented.

In this article, the well posedness of Cauchy problem associated to transport equations with singular cross-sections (i.e., unbounded collision frequencies and operators) on Lp spaces periodic boundary conditions is discussed, some compactness (or weak compactness) first order remainder term Dyson-Phillips expansion for a large class operators proved Lp(1 < p ∞) L1) spaces. Thus, allows us evaluate essential type semigroup from which asymptotic behavior solution derived. Consequently,...

The Doppler spectra of sea echoes, which contain abundant information on floating scatterers, are important for exploring the characteristics clutter. Using clutter data at low grazing angles observed by a coherent ultra-high frequency (UHF) radar located Lingshan Island in Yellow Sea, China, this study conducted detailed research with multiple ocean parameters, including angle, significant wave height (SWH), and directions. effect echoes different local normalized intensities short-time was...

Lack of programmability, traditional IP-based SoC composed fixed-function ASIC blocks could not fit complex applications well. Application specific instruction-set processor (ASIP) has been proved to be efficient for applications. This paper described a heterogeneous multicore named EVMP-SoC, which is specially optimized embedded visual media We the architecture according workload analysis typical application. The chip was implemented using SMIC 0.13 um CMOS standard cell library technology....