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A STUDY ON EQUIVALENT FLEXURAL RIGIDITY OF COMPLEX POLYGONAL HONEYCOMB STRUCTURE
Published 2017-01-01“…The angle and length of walls has a great influence on equivalent flexural stiffness,the changes of angle and length will lead to positive and negative changes of the coupling stiffness,the absolute value of flexural stiffness increases with the increase of the wall’s height and thickness. …”
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A differential game model of intrusion detection system in cloud computing
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63
Investigating the Feasibility of Using Cassava Starch as a Partial Replacement of Cement Used in Mortar: A Case Study Moyo District (Palorinya Refugee Settlement Camp).
Published 2025“…Therefore, there is a need to investigate the strength of cassava starch mortar, compared to cement mortar because this will greatly reduce the cost of construction and impact positively on the environment.…”
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64
A UWB NLOS identification method under pedestrian occlusion
Published 2023-12-01“…Ultrawideband (UWB) is a hot technology for indoor positioning with large bandwidth, strong anti-interference ability, and high multipath resolution capacity.However, due to the complex indoor environment, UWB signal propagation will inevitably be blocked, resulting in non-line-of-sight (NLOS) propagation, which greatly reduces the accuracy of UWB positioning.Therefore, identifying NLOS signals accurately and discarding or correcting them are important to alleviate the problem of the decline in positioning accuracy.The majority of present NLOS identification work focuses on scenes with building structures such as walls.Further discussion is needed for scenes obscured by pedestrians.Since the impact of human obstacles on the signals is more complex and cannot be ignored, the NLOS identification under pedestrian occlusion was studied.By comparing a variety of machine learning methods and signal feature combinations, the random forest method based on the three-dimensional features of the first path signal power, the received signal power, and the measured distance was proposed.These features with fewer dimensions and easy extraction were used to achieve a high identification percentage for NLOS.The experimental results based on the measured data of different devices show that the NLOS identification accuracy based on the proposed method reaches 99.05%, 99.32% and 98.81% respectively.…”
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Cardiac Abnormalities in Acromegaly Patients: A Cardiac Magnetic Resonance Study
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66
Investigation on Temperature-Dependent Multiaxial Ratchetting of Polycarbonate by a Novel Experimental Method
Published 2022-01-01“…A novel method to heat the multiaxial hollow thin-wall specimen was proposed, where its gauge length section can be heated by the liquid (i.e., water) filled inside the specimen instead of the closed furnace. …”
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A new Lactobacillus gasseri strain HMV18 inhibits the growth of pathogenic bacteria
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68
La prison de Guingamp, de l’ombre à la lumière
Published 2024-01-01“…The prison was built by the Côtes-du-Nord department and opened in 1841 thanks to Charles Lucas, general inspector of prisons, Louis Lorin, departmental architect and Alexis de Tocqueville, the great French historian, thinker and publicist. We owe them this humanist architectural design of the idea that a prison is not simply a place of confinement. …”
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Synthesis and Properties of a Polymer-Modified Material for Thin Spray-On Liners in Mine Roadways
Published 2020-01-01“…In addition, TSL exhibited a great performance for dry and wet walls under different environmental conditions. …”
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Non-Fickian Solute Transport in a Single Fracture of Marble Parallel Plate
Published 2018-01-01“…The fracture used with a length of 60 cm and a width of 10 cm is sealed with glass glue to avoid leakage of tracer due to uneven fracture walls. …”
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A Novel FEM-Based Numerical Solver for Interactive Catheter Simulation in Virtual Catheterization
Published 2011-01-01“…In the development of such a simulator, however, it is a great challenge to realistically model and simulate deformable catheters and guidewires in an interactive manner. …”
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Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan
Published 2019-01-01“…The axial spacing of two-stage contra-rotating blade rows has a significant impact on a contra-rotating fan/compressor. …”
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A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway
Published 2020-01-01“…The stability of thin immediate roof under uniform load of the rectangular coal roadway was tested in 1905s mining roadway of Great Wall Number #3 coal excavation field. This research can further fill in blanks of the loading mechanism of the roadway roof and provide theoretical and pragmatic values to control the roadway pressure and rock stratum as well as the scientific references to the design of the anchor bolt supporting system.…”
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A method for evaluating the accessibility of underground auxiliary transportation vehicles in coal mines based on multi feature fusion
Published 2024-12-01“…Progressive probability Hough transform and Catmull Rom spline curve with improved feature point selection are used to fit the straight track and curved track separately, forming a railway track detection method based on a switchable model; Secondly, based on the color attributes of coal mine underground tunnel wall pipelines, a pipeline feature detection strategy is constructed through HSV color space transformation, edge detection, and least squares fitting algorithms; Once again, a weighted fusion method based on pipeline and rail feature points is proposed to extract the centerline trajectory of auxiliary transportation vehicles, and to construct rules for generating safe passage areas for auxiliary transportation vehicles; Then, for the over-segmentation problem in the traditional watershed algorithm, two-dimensional edge and area feature extraction of static obstacles is carried out by using improved watershed segmentation based on markers and GraphCut algorithm, and a small-sample classification support vector mechanism is selected to build a pedestrian detection model based on the fusion of HOG (Histograms of Oriented Gradients)features and LBP(Local Binary Pattern) features for underground coal mine, so as to realize the comprehensive detection of dynamic and static obstacles in front of auxiliary transportation vehicles; Finally, the positional relationship between obstacles and safe passage area is judged by Euclidean distance to determine the obstacle invasion, and the results of auxiliary transportation vehicle passability assessment are obtained. …”
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A quasi-one-dimensional ice mélange flow model based on continuum descriptions of granular materials
Published 2025-01-01“…The broader impacts of ice mélange over long timescales are unknown, in part due to a lack of suitable ice mélange flow models. Previous efforts have included modifying existing viscous ice shelf models, despite the fact that ice mélange is fundamentally a granular material, and running computationally expensive discrete element simulations. …”
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Un port rural antique de fond d’estuaire à Blainville-sur-Orne (Calvados)
Published 2020-12-01“…The ancient port was established in a landscape that differs greatly from the current landscape. …”
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Inferior Vena Cava Filter and Catheter-based Thrombolysis for Treatment of Massive Deep Vein Thrombosis: A Case Report
Published 2025-01-01“…Deep Vein Thrombosis (DVT), a subtype of Venous Thromboembolism (VT) is more likely to occur in areas such as the lower leg, thigh or pelvis when vessel wall damage, blood flow stasis and hypercoagulability are present. …”
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Design of metallic parabolic anechoic chamber for compact range measurement
Published 2017-03-01“…The common method for anechoic chamber construction is to cover all inside walls by the EM absorbers. A fully metallic parabolic chamber is presented in which the propagation of the EM waves inside the chamber is controlled and they are guided to an absorber. …”
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