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16421
Advanced visual sensing and control in CMT-based WAAM processes
Published 2025-01-01“…Second, a structured light visual sensing system based on a high-speed camera was developed. Finally, a method for controlling the camera’s triggering mode at low voltage was designed, effectively eliminating arc interference. …”
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16422
STRUCTURAL RELIABILITY ANALYSIS BASED ON AN IMPROVEMENT OF THE RESPONSE SURFACE METHOD
Published 2018-01-01“…Then the sample points near the failure boundary from all sample points were selected after convergence, the limit state function was built by a quadratic polynomial response surface with mixed terms and square terms, and finally the structural reliability was calculated by the Monte Carlo method. …”
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16423
Research on channel-fixed delay error estimation of wideband digital array radar
Published 2023-03-01“…A channel-fixed delay error estimation method was proposed to tackle the performance degradation of digital beamforming caused by the channel-fixed delay error of wideband digital array radar.First, the integer part of the fixed delay of the channel was estimated through the correlation integral peak of the baseband transmitted signal and the baseband received signal containing unknown delay parameters.Then, the fractional part of the fixed delay of the channel was estimated with parabolic interpolation by using the correlation peak and its adjacent two points.Finally, the multi-channel fixed delay error was calculated and compensated.The simulation results show that the multi-channel fixed delay estimation of wideband digital array radar can be realized on Xilinx xcku115.The estimative precision can reach 0.001~0.014 times the sampling gap when the signal-to-noise ratio of the input signal is 10~30 dB.The proposed method can meet the engineering application requirements and improve the performance of digital beamforming in wideband digital array radar.…”
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16424
Time-varying Reliability Analysis of Planetary Gear Reducers Based on Fatigue Failure
Published 2024-01-01“…The sensitivity of each variable of the time-varying reliability model is analyzed. Finally, taking PM90 precision planetary gear reducer as an example, the reliability and sensitivity of each variable based on fatigue failure are obtained respectively, and the time-varying law of reliability under contact fatigue failure and bending fatigue failure is expounded, which lays the foundation for the time-varying reliability analysis of planetary gear reducers.…”
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16425
دراسة سجل قيد مضابط الدعاوى الشرعية الفترة 1268 هـ / 1852 م - 1272 هـ / 1856 م بدار الوثائق القومية
Published 2021-01-01“…This research deals with studying the record of registering the proces –verbal of religious lawsuits during the period 1268 AH / 1852 AD - 1272 AH /1856 AD, archival and documentary in terms of defining the record and itsimportance, procedures for conducting lawsuits and issuing judgments therein,studying and publishing samples of the documents included in it, along withcreating archival description cards for these forms according to the internationalcodification of the Archival description (TADO).The National Archives House contains many documents and records ofthe Diwans that resulted from the activity of the Diwans and institutions in thenineteenth century, and many of them have not been discovered yet, and theyhave not been used to enrich the historical, documentary and archival studiesMy choice of this topic is due to several reasons, including: The record ofregistering the records of process-verbal of religious lawsuits in the KhediveDiwan or publishing any of its documents was not previously studied, sheddinglight on the juridical competencies of the Khedive Diwan and finally encouragingresearchers to study the documents and records of Diwans in the nineteenthcentury because they include very important archival, documentary and historicalinformation .…”
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16426
Measurement configuration for integrated electric–gas systems via observability analysis considering gas flow dynamics
Published 2024-12-01“…To handle the rank constraints effectively, an iterative cutting method is developed with convergence guarantees. Finally, the efficacy and practicality of the proposed methods are validated through case studies of varying scales. …”
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16427
Avancée dans la prévention des « chutes de plain-pied » au travail
Published 2010-11-01“…A model is then proposed for MPAs that shows that in these specific cases of accidents, the injury often results from a fortuitous association between the victim’ perturbed motion energy and a physical element that causes injury due to its properties and subsequently called a “circumstantial hazard”. Finally, the reasoning behind the MPA classification is explained. …”
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16428
An orally administered gold nanocluster with ROS scavenging for inflammatory bowel disease treatment
Published 2025-01-01“…Au25 NCs can eliminate ROS such as ABTS radicals, superoxide free radicals (•O2−), and hydroxyl free radicals (•OH), upregulate the expression level of antioxidant enzymes, inhibit the expression of proinflammatory cytokines, and finally interrupt the inflammatory circuit of IBD to achieve the effective prevention and delayed treatment of IBD. …”
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16429
Les sols créateurs de paysages à l’extrémité aval de l’île Saint-Denis
Published 2022-12-01“…Following decades during which industrial activities left the area, the relationship to nature and soil evolved from recreational use to ecological conservation and finally to ecological reconciliation. This site is now developed according to practices that break with those of the past and include an awareness of the need to consider the soil as a living organism.…”
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16430
Dynamical behavior analysis and control of time-varying lifting system based on fuzzy adaptive back-stepping controller
Published 2025-01-01“…Thirdly, based on Lyapunov function, the asymptotic stability of the system under the proposed control algorithm is verified. Finally, compared with proportion–integration–differentiation (PID) back-stepping controller, the efficiency of the proposed controller is proven by applying excitation with different frequency and uncertain parameters, and the adaptability and robustness are illustrated to validate under mixed frequency disturbance by simulation compared with PID back-stepping controller. …”
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16431
Development of a Novel Micro Photoionization Detector for Rapid Volatile Organic Compounds Measurement
Published 2018-01-01“…Under the guidance of simulation results, structural optimization was carried out to significantly reduce the dead volume of the ionization chamber, and finally, the relationship between offset voltage and collection efficiency was obtained which led to a remarkable increase in the collection efficiency of charged ions in the photoionization detector. …”
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16432
Efficient revocable attribute-based encryption scheme
Published 2019-06-01“…In the existing solutions,the time-based scheme is difficult to achieve immediate revocation,and the third-party-based scheme often requires re-encryption,which needs large amount of calculation and doesn’t apply to mas-sive data.To solve the problem,an efficient and immediate CP-ABE scheme was proposed to support user and attribute lev-els revocation.The scheme was based on the classic LSSS access structure,introducing RSA key management mechanism and attribute authentication.By means of a semi-trusted third party,the user could be authenticated before decryption.Com-pared with the existing revocation schemes,The proposed scheme didn’t need the user to update the key or re-encrypt the ciphertext.The semi-trusted third party wasn’t required to update the RSA attribute authentication key.The scheme greatly reduced the amount of computation and traffic caused by revocation,while ensuring anti-collusion attacks and forward and backward security.Finally,the security analysis and experimental simulation show that the scheme has higher revocation ef-ficiency.…”
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16433
Dependable identity recognition and authorization based on visual information
Published 2020-11-01“…Recently,deep learning has been widely applied to video and image based identity recognition and authorization tasks,including face recognition and person identification.However,machine learning models,especially deep learning models,can be easily fooled by adversarial attacks,which may cause the identity recognition systems to make a wrong decision.Therefore,dependable identity recognition and authorization has become one of the hot topics currently.Recent advances on dependable identity recognition and authorization from both information space and physical space were presented,where the development of the attack models on face detection,face recognition,person re-identification,and face anti-spoofing as well as printable adversarial patches were introduced.The algorithms of visual identity anonymization and privacy protection were further discussed.Finally,the datasets,experimental protocols and performance of dependable identity recognition methods were summarized,and the possible directions in the future research were presented.…”
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16434
Passenger Flow Path Prediction Based on Urban Rail Transit AFC Data: An Example of Chengdu, China
Published 2023-01-01“…The maximum effectiveness of a path is measured by travel time, interchange time, and the number of interchanges between the OD pairs. Finally, the validity of the proposed passenger flow path prediction method is verified by using the AFC data of Chengdu metropolitan rail transit from April 2018.…”
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16435
E3 Ubiquitin Ligases: Potential Therapeutic Targets for Skeletal Pathology and Degeneration
Published 2022-01-01“…We review the classification of these E3 enzymes and the mechanisms that influence upstream and downstream molecules and transduction pathways. Finally, this paper reviews the discovery of the relevant UPS inhibitors, drug molecules, and noncoding RNAs so far and prospects the future research and treatment.…”
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16436
MLLT11 siRNA Inhibits the Migration and Promotes the Apoptosis of MDA-MB-231 Breast Cancer Cells
Published 2023-01-01“…Moreover, cell migration and invasion, as well as the protein levels of phosphatidylinositol 3-kinase (PI3K), AKT, matrix metalloproteinase (MMP) 2, and MMP9, were significantly lower in the groups treated with siRNA while the apoptosis was augmented. …”
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16437
Research Progress of Synthesis and Modification Methods Based on Dynamic Substructures
Published 2020-01-01“…In terms of substructure modification, the reference datum method, function dynamic modification method, neural network model modification, and frequency response function modification are analyzed, and the shortcomings of the dynamic substructure modification method are summarized. Finally, the development trend of dynamic substructure synthesis and modification algorithm is proposed.…”
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16438
Improving efficiency and reliability in the seismic monitoring systems based on the Internet of Things by applying redundancy in sensors and controllers
Published 2024-07-01“…Also, the average end-to-end delay was significantly reduced in the second and third solutions. Finally، in the first solution, the rate of successful package delivery for different numbers of packages was a constant value of 78.98%. …”
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16439
Intelligent Diagnosis of Rolling Bearing Fault Based on Improved Convolutional Neural Network and LightGBM
Published 2021-01-01“…Then, the extracted features are classified by a light gradient boosting machine. Finally, the verification experiment is carried out, and the experimental result shows that the average training and diagnosis time of the model is only 39.73 s and 0.09 s, respectively, and the average classification accuracy of the model is 99.72% and 95.62%, respectively, on the same and variable load test sets, which indicates that the diagnostic efficiency and classification accuracy of the proposed model are better than those of other comparison models.…”
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16440
Natural Training in Control of Formal Education: A Critical Analysis ofthe Book " Zaynab Letters"
Published 2017-11-01“…The author has attempted to find out the analytical methods, achieve these aspects in the dual interpretation of its provisions. Finally, after analyzing the content of the book, as the conclusion of the paper, the nine principles regarding the language characteristics of children are identified, and then the twelve special features and components of the language are considered. …”
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