662 papers
This study demonstrates that 3D-printed 5-point swirl-star fuel grains with reverse ports significantly enhance the throttling responsiveness and dual-thrust stability of hybrid rocket engines, achieving rapid stabilization and minimal pressure fluctuations during active oxidizer flow modulation.
This paper introduces a reconfigurable neural unit (RNU) that integrates a MoTe2/h-BN synaptic transistor with an Ag/h-BN/graphene volatile memristor to achieve a dynamically tunable U-shaped non-monotonic activation function and precise spatiotemporal inhibitory control, thereby enhancing the performance of neuromorphic systems in image recognition and EEG decoding tasks.
This study employs finite-element simulations in COMSOL Multiphysics to demonstrate that boundary conditions critically govern the coupled thermal, mechanical, and electromagnetic responses of magneto-electro-elastic truncated conical shells, revealing that clamped edges maximize stress and electric fields while simply supported configurations enhance electric potential.
This paper presents a high-gain, low cross-polarization metasurface lens antenna operating at 15 GHz that utilizes a multilayer unit cell to achieve high aperture efficiency and superior polarization purity through effective phase control and orthogonal polarization suppression.
This study demonstrates that using an Apodized Chirped Fiber Bragg Grating in a symmetrical compensation scheme significantly outperforms pre- and post-compensation methods for 10 Gbps optical transmission, achieving superior Quality factors and Bit Error Rates over distances up to 90 km.
This paper introduces a self-powered, broadband 2D Nb8PtSe20 photodetector capable of room-temperature long-wave infrared sensing and in-sensor convolution, which significantly enhances nighttime UAV small-object detection performance when integrated with multimodal vision transformers.
This study demonstrates that a lightweight Kevlar composite armor featuring vertically stacked W-shaped plates, inspired by medieval lamellar designs, successfully resisted six 9 mm FMJ projectiles under modified NIJ Level IIA conditions with minimal backface deformation, validating the potential of geometry-driven segmented architectures for enhanced ballistic protection.
This study utilizes experimental and PIV analysis to demonstrate that cavity geometry, tunnel depth, and water ingress critically influence surface collapse mechanisms during tunnelling, revealing that shallow tunnels with large cavity area ratios under seepage conditions experience accelerated settlement and reduced collapse times.
This paper presents a time-explicit model of interdependent road-electricity systems to demonstrate that societal impacts of pluvial flooding are driven by recovery constraints and repair capacity rather than just flood exposure, and that targeted pre-event adaptation measures are more effective at reducing these impacts than post-event repair prioritization alone.
This paper proposes a schema-based technical assessment methodology to analyze the structural damage of the historic Mohammad Ali's Residence in Addis Ababa and develop a feasible preventive conservation plan to counter threats from urban development and neglect.