Induced spoofing detection method based on error valuation accumulation open-loop correction by Lunlong ZHONG, Jiongpo LIU, Yongyu LIU

“…Induced satellite spoofing interference can induce the aircraft to gradually deviate from the predetermined trajectory, and it is difficult to detect.So timely and effective detection of interference is the guarantee of flight safety.Based on the existing tightly integrated navigation system, an error valuation accumulation open-loop correction structure was designed.It was proved that the performance of the designed structure was equivalent to the performance of traditional tightly integrated navigation system with closed-loop correction.On the basis of designed structure, combining the tightly integrated navigation system with the adaptive sequential probability ratio test method, an induced spoofing detection method based on the error valuation accumulation open-loop correction was proposed.A spoofing detection statistic for induced spoofing detection was constructed by integrating the tightly integrated navigation information with other navigation information that was not affected by spoofing interference.Simulation results show that the designed open-loop correction structure can avoid the divergence problem of the integrated navigation filter caused by the inertial navigation system error accumulated over time.Moreover, the proposed spoofing detection method can improve the detection effect of the algorithm of the small induced spoofing under the “worst” case further.…”
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Self-supervised speech representation learning based on positive sample comparison and masking reconstruction by Wenlin ZHANG, Xuepeng LIU, Tong NIU, Qi CHEN, Dan QU

“…To solve the problem that existing contrastive prediction based self-supervised speech representation learning methods need to construct a large number of negative samples, and their performance depends on large training batches, requiring a lot of computing resources, a new speech representation learning method based on contrastive learning using only positive samples was proposed.Combined with reconstruction loss, the proposed method could obtain better representation with lower training cost.The proposed method was inspired by the idea of the SimSiam method in image self-supervised representation learning.Using the siamese network architecture, two random augmentations of the input speech signals were processed by the same encoder network, then a feed-forward network was applied on one side, and a stop-gradient operation was applied on the other side.The model was trained to maximize the similarity between two sides.During training processing, negative samples were not required, so small batch size could be used and training efficiency was improved.Experimental results show that the representation model obtained by the new method achieves or exceeds the performance of existing mainstream speech representation learning models in multiple downstream tasks.…”
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D2D cooperative caching strategy based on graph collaborative filtering model by Ningjiang CHEN, Linming LIAN, Pingjie OU, Xuemei YUAN

“…A D2D cooperative caching strategy based on graph collaborative filtering model was proposed for the problem of difficulty in obtaining sufficient data to predict user preferences in device-to-device (D2D) caching due to the limited signal coverage of base stations.Firstly, a graph collaborative filtering model was constructed, which captured the higher-order connectivity information in the user-content interaction graph through a multilayer graph convolutional neural network, and a multilayer perceptron was used to learn the nonlinear relationship between users and content to predict user preferences.Secondly, in order to minimize the average access delay, considering user preference and cache delay benefit, the cache content placement problem was modeled as a Markov decision process model, and a cooperative cache algorithm based on deep reinforcement learning was designed to solve it.Simulation experiments show that the proposed caching strategy achieves optimal performance compared with existing caching strategies for different content types, user densities, and D2D communication distance parameters.…”
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Social networking friendships: A cross-cultural comparison of network structure between MySpace and Wretch by Chang Hui-Jung

“…From the 6 seed users, a snowball sample was constructed by crawling 2 degrees out along the networks. …”
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Les représentations en psychologie du travail, de la formation, et en didactique des disciplines scientifiques by Janine Rogalski

“…Internal representations are “constructs” infered from the subjects’ behaviour (including thiers producing external representations such are verbalisations, drawings, aso.). …”
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Spatial ‘Complexity’: Analysis of the Evolution of Beijing’s Movement Network and its Effects on Urban Functions by Qiang Sheng

“…Based on a model developed by Spacelab, which understands scale as being constructed in movement and communications technologies, we try to represent this process on two levels: first, on the morphology of the movement network itself, I would like to show how technological development of highway, metro and bus systems change the way people move in the city; second, on the effects of changing movement networks, I would like to examine how shops and other public activities locate and relocate themselves within urban space. …”
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Sur la circulation du modèle corporatif fasciste dans le monde : agents, réseaux, effets by Matteo Pasetti

“…Recent historiography on the transnational dimension of fascism has attributed a role of primary importance to the circulation of the corporatist model that Mussolini’s regime began to construct from the mid-1920s onwards. It has been shown that, from that time onwards, many intellectuals and politicians from different parts of the world, not only from the far right but also from various ideological backgrounds, began to take a close look at the fascist corporate laboratory, in which an unprecedented system of interest representation and regulation of labour relations, of a state and authoritarian type, was being created. …”
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Desenvolvimento de um índice de vulnerabilidade em saúde nos municípios do Ceará by Gerlânia Maria Rocha Sousa, Maria Elisa Zanella, Patrícia Verônica Pinheiro Sales Lima, João Luís Sampaio Olímpio, Marysol Dantas de Medeiros, Andréa Ferreira da Silva

“…The general aim of this article is to assess the health vulnerability of municipalities in Ceará by constructing the Health Vulnerability Index (HVI). The index was calculated using statistical multivariate analysis techniques, making it possible to hierarchize the municipalities of Ceará in terms of the vulnerability studied. …”
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The role of government in helping SMEs to access finance: An evolutionary game modeling and simulation approach. by Zhu Mei, Jingjing Zhang, QiaoMei Zhou

“…<h4>Methodology</h4>Utilizing numerical simulations informed by dynamic equation constraints and optimal equilibrium states, this paper abstracts the strategic behaviors of system constituents, constructing a game model to predict and analyze system evolution within various operational contexts.…”
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Review on Intelligent Governance of Physical Fitness of College Students under the Background of Big Data by Qing Liu, Zhenzhi Li, Shangli Liu

“…Based on the profound analysis of the current situation of college students’ physical fitness, this study examines the great value of big data for the intelligent governance of physical fitness, and further constructs the model to achieve intelligent governance of college students’ physical fitness. …”
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Risk Analysis of Waterlogging under Combination of Short-duration Heavy Rainfall and Tidal Level in Foshan City by YANG Fan, XU Liang, HAN Jing

“…In orderto explore the probability of waterlogging risks in a specific city and provide scientific basisfor the study of urban waterlogging risks in the Pearl River Delta region, from the perspective ofthe causes of waterlogging, this paper takes Foshan as a typical research area, systematicallyanalyzes the probability of encountering storms and high tide levels, constructs a probabilisticmodel for the risk of encounter of rainstorm and high tidal level in urban area of Foshan, andquantitatively evaluates the encounter probabilities and change trend under multiple combinationsof rainstrom and tidal levels in urban area of Foshan by the time-series trend analysis, stormfrequency change statistics, sequence wavelet analysis, and Copula function. …”
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Design and Test of Quad-Bundle Spacer Damper Based on a New Rubber Structure by Zhenbing Zhao, Bin Liu, Shengchun Liu, Dachuan Zhang

“…Firstly, a mathematical vibration model of the spacer damper was constructed, and the structures of the defect-prone parts of the spacer damper were analyzed. …”
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Research on Monitoring method of Urban Road Waterlogging Depth Based on Deep Learning and Ellipse Detection by LIAO Yuhong, HUANG Guoru

“…In order to solve the problem that the traditional urban waterlogging monitoring methods consume a lot of manpower and material resources and also have a high cost,which cannot meet the needs of comprehensive and rapid monitoring of urban flood,a method of monitoring the depth of urban road waterlogging using deep learning and ellipse detection algorithm is applied,which constructs a computation model of the urban road waterlogging depth by detecting and segmenting the wheels of different types of vehicles on the images through a deep learning model and using ellipse detection algorithm to extract the geometric characteristic parameters of submerged wheels.Verified by typical video monitoring sites in Dongying City,The results show that the average positioning precision and segmentation precision of the model on the dataset can reach over 94%;the model has a good monitoring effect on waterlogging depth for vehicles on both the directly lateral side and the oblique lateral side in actual waterlogging monitoring;furthermore,the results at the near point are better than that at the far point,and the results for vehicles on the directly lateral side are better than the oblique lateral side.The results can lay the foundation for further research,and provide technical support for urban waterlogging monitoring and flood emergency management.…”
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A Collaborative Method on Reversible Lane Clearance and Signal Coordination Control in Associated Intersection by Xiaolan Xie, Luxi Dong, Huinan Gu, Hailing Li, Lieping Zhang

“…To improve traffic efficiency and utilization of road resources and alleviate traffic congestion caused by imbalance of bidirectional traffic flow, in view of the conversion conditions of reversible lane function, the operating characteristics of associated intersections under dynamic reversible lanes are analysed in terms of capacity, and a reversible lane control model is constructed based on short-term traffic flow prediction. …”
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A SUSTAINABLE PRODUCT IN VIEW OF TECHNICAL PARTS AND COMPONENTS OF A MEANS OF AGRICULTURAL TRANSPORT by Przemysław NIEWIADOMSKI, Agnieszka MERKISZ-GURANOWSKA

“…At the onset of the research work, the conceptual model of the thesis was constructed, according to which the surveyed enterprises are focused on individuals (working environment), natural environment and economics (including minimizing waste throughout the product life cycle), which is a prerequisite as far as a sustainable product is concerned.…”
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“The very land of romance”: Original Compositions on Spain and the Spanish in The Southern Literary Messenger (1834-1864) by José Manuel Correoso-Rodenas

“…The aim of this article is to expose how this particular stream of influence was constructed, and which were the aspects preferred by authors and editors in order to highlight Spain. …”
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Territorial Trajectories within a New Centre for the Globalised Mining Industry: the Andes of Northern Argentina by Marie Forget

“…Our research examines the territorial-development trajectories of three provinces – San Juan, Catamarca and Jujuy – and analyses how interactions between governmental and non-governmental actors affect a territory’s approach to constructing and exploiting its resources. Questions about the way in which these interactions shape the development of mountain territories have led to alternative models that take into account the need for territorial development to be built locally.…”
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Wear Resistance of Anodic Titanium Dioxide Films Produced on Ti-6Al-4V Alloy by María Laura Vera, Mario Roberto Rosenberger, Carlos Enrique Schvezov, Alicia Esther Ares

“…Ti-6Al-4V alloy with TiO2 coating is the most commonly selected material to construct an aortic heart valve. Wear resistance is the main mechanical property to be evaluated for this purpose. …”
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Deficit fear as a modulator of disbelief in the framework of self-perception among students at the stage of self-isolation by M. M. Basimov

“…In addition, three graphs of the dependencies of the indicator of the actual self–perception “Unbeliever – believer” on three indicators of fear (constructive, deficit and destructive) are clearly analyzed, when all the connections within the correlation analysis are extremely weak, but with a nonlinear approach, one of the three dependencies is strong as the simplest nonlinear.…”
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PREDICTION AND OPTIMIZATION ANALYSIS OF DURABILITY PERFORMANCE OF AUTOMOTIVE CLOSURES by GUO PengBo, LIU Zhe, LI Hui, GAO DaWei

“…Aiming at the fatigue failure problem of a car door opening and closing process.The Hypermesh was used to construct a finite element model of door opening and closing,and then Ls⁃Dyna,an explicit dynamics solver,was used to establish a nonlinear transient dynamics model of door opening and closing.The d3plot file containing the stress⁃time history solved by the nonlinear transient analysis was imported into nCode DesignLife to build the fatigue analysis module,and the results were verified with 100000 times of door opening and closing durability tests,and the conclusions show that both of them have good consistency in terms of the damage location and the damage degree.Finally,multi⁃particle swarm optimization(MPSO)was used to optimize the door with the objectives of door lightweight and minimum damage,and the optimal solution was selected according to the engineering reality,which reduced the mass of the door assembly by 0.17 kg,and the damage value of the door was reduced by about 24.33%.The optimization results show that the MPSO algorithm can be effectively applied to the multi⁃objective optimization design of the door,which provides certain ideas for the design and development of the subsequent door.…”
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