Intelligent baggage packing is an important trend of future civil aviation baggage processing. To solve the problems of labor intensiveness and inefficiency in the current transportation, a new algorithm based on dynamic quadtree search is proposed. Using the dynamic planning of luggage configuratio...

To address the problem of multiple maneuvering extended target tracking, this paper introduces the concept of interactive multiple models into the Poisson multi-Bernoulli mixture filtering (PMBM) algorithm, and proposes a multi-model algorithm with Gamma Gaussian inverse Wishart and PMBM (MM-GGIW-PM...

The evaluation of transfer time efficiency is of great significance to improve the transfer efficiency of airport comprehensive transportation. The traditional index optimization method is difficult to truly reflect the index relationship and lacks of index screening rules in the transfer evaluation...

Based on the analysis of fuse additive manufacturing using hot cathode electron beams with axial side feeding wires and gas discharge electron beam coaxial wire, the characteristics of droplet transfer of the gas discharge electron beam coaxial wire fuse additive manufacturing have been analyzed, an...

For facial expression recognition, traditional machine learning method features extraction is relatively complex, shallow convolutional neural network recognition rate is not high, and deep convolutional network is easy to cause gradient explosion or dispersion problems. This paper constructs the mu...

Fiber reinforced composite laminates are sensitive to low velocity impact events, and the induced damage extensively reduces the load-bearing capacity and service life of composite structures. A continuum damage mechanics based finite element model is proposed to investigate the mechanical behavior ...

Surface breaking fatigue crack propagation can lead to structural failure. The phased array ultrasonic imaging technology is used to monitor fatigue cracks and can obtain the crack information required for structural integrity evaluation. For the purpose of evaluating the structural integrity of a s...

Aiming at problems of the burst task planning and resource scheduling of the infrared LEO constellation, a method based on multi-strategies is proposed considering the temporal and spatial distribution characteristics of infrared LEO constellation. And drawing on the design characteristics of infrar...

Radar cross section (RCS) is an important index to evaluate the stealth performance of aircraft. As the inlet has a great contribution to the RCS of aircraft, it is significant to the study of the scattering of aircraft inlet. Compared with the common convex surface target, the inlet belongs to the ...

Aiming at the lack of comprehensiveness in the quantitative evaluation of the capability of civil aviation supervisors, a comprehensive evaluation index system is proposed. Firstly, the constituent elements of the capability for the supervisor team and the corresponding primary and secondary indicat...

A hot-melt prepreg MT700/603 was prepared. The correlation between ambient-temperature storage life and the degree of pre-curing, and effects of pre-curing degree on composite quality and mechanical properties were investigated and discussed. The relationship among prepreg storage life, pre-curing d...

In order to meet the requirements of the mini synthetic aperture radar (miniSAR) satellite interferometry mission for the space baseline, a set of precision reference orbit design algorithms was established by analyzing the features of the satellite reference orbit. The algorithm takes a group of or...

Obtaining the inference latency of a convolution neural network (CNN) via learnable prediction algorithm have attracted more attention. Existing latency predictors suffer from two major problems. First, the high complexity of CNN design space requires tremendous cost of data collection. Second, trad...

The laminated composite structures in harsh hygrothermal environment are easy to undergo premature buckling and delamination propagation. This paper proposes a theoretical study on the nonlinear buckling and interfacial crack propagation of thick plate containing delamination by considering the hygr...

The aerodynamic shape design of an aircraft requires a robust optimization approach that takes uncertainty into account. To the knowledge of the authors, research efforts were more paid to the robust optimization considering environmental perturbations, rather than geometric perturbations. For purpo...

A human body thermoregulation model is designed to describe heat transfer from a human body to the environment, and predict thermal physiological parameters. This model is composed of a passive system and a thermoregulation system. The passive system employs the Tanabe model, consisting of 65 multi-...

To explore the flow field morphology and fluid-structure coupling mechanism of split drag rudder, computational fluid dynamics (CFD) method is used to calculate the SDR flow field with different crack angles. Based on the dynamic mode decomposition (DMD) method, the flow characteristics and frequenc...

By changing the wing sweep angle, the variable wing sweep aircraft can achieve the best flight state under different flight speeds. To complete the folding and unfolding movements of the wing skin when the wing sweep angle changes under the single drive condition, we present a new driving mechanism ...

Pigeon usually flaps and twists its wings by changing the frequency or the amplitude to achieve efficient flying. Inspired by this, to provide a generic design and verification platform for the study of flapping-wing aircraft control laws and control allocation algorithms, a dynamic model of a pigeo...

Based on the shell and tube phase change heat exchanger, the melting heat transfer characteristics of 35 paraffin outside the rectangular radial plate fin tube were studied by numerical simulation method. The three-dimensional model of fin element was established to study the influence of thermal fl...

Short-term load forecasting is the basis for reasonable dispatch and smooth operation of the power grid. To improve the accuracy of short-term load forecasting, a method based on Pearson correlation coefficient (PCC) and long and short term memory (LSTM) neural network is proposed. This method uses ...

Targets in satellite videos are susceptible to occlusion and interference from complex environments, resulting in inaccurate estimation of the target motion state, eventually leading to target tracking failure. Therefore, based on the kernelized correlation filter (KCF) algorithm, two algorithms are...

Wiring can be made simpler and lighter by using power line communication (PLC) technology to replace some of the data cables used to connect avionics systems. According to airborne power line environment and avionics communication requirements, it is necessary to solve the problem of evaluating the ...

In the process of knowledge management in nuclear power, it's necessary to use named entity recognition to extract high-quality semantic entities for intelligent analysis and processing of text in nuclear power.On the basis of existing research, the recognition precision rate of the model for nested...

Deep learning-based RF fingerprint recognition methods now primarily use raw data samples as the input of the network, never taking into account how the signal's content affects classification outcomes, and the structure of the network is relatively simple. In response to the above problems, the pre...

There exists a type of stable retrograde orbit around the Moon called distant retrograde orbit (DRO) in the Earth-Moon system. The circular restricted three-body problem (CR3BP) is taken as the dynamical model to study the dynamical structure around DRO. It is possible to determine the bifurcation p...