While recent low-cost radar-camera approaches have shown promising results in multi-modal 3D object detection, both sensors face challenges from environmental and intrinsic disturbances. Poor lighting or adverse weather conditions degrade camera performance, while radar suffers noise positional ambiguity. Achieving robust detection requires consistent performance across varying conditions, a topic that has not yet been fully explored. In this work, we first conduct systematic analysis of...

The issue of freezing often occurs when using all-glass vacuum tube solar water heaters during cold winter seasons, leading to problems such as pipe ruptures and tank leakage. In order further study the nocturnal heat dissipation characteristics these heaters, a three-dimensional transient numerical model their was established. simulated process, experimental validations were conducted through temperature drops collector individual tubes without storage tank. Experimental simulation results...

In special launch scenarios such as armament and aerospace, the scale of system is severely restricted, which causes unstable combustion propellant. An embedded structure for small propulsion driven by solid propellant proposed to overcome this problem. This study aims demonstrate two-phase flow behaviors safety chamber with an structure. A two-dimensional model based on modified two-fluid theory developed describe detailed in during launching. Different from most existing studies,...

Perceiving the surrounding environment is a fundamental task in autonomous driving. To obtain highly accurate perception results, modern driving systems typically employ multi-modal sensors to collect comprehensive environmental data. Among these, radar-camera system especially favored for its excellent sensing capabilities and cost-effectiveness. However, substantial modality differences between radar camera pose challenges fusing information. address this problem, paper presents RCBEVDet,...

Methods of measuring the thermal impedance Metal Core PCBs are analyzed. The ASTM D5470 method can measure conductivity insulated layer MCPCBs, but cannot distinguish contacting resistance, which introduced during measuring, and boundary arising from layered structure MCPCBs. Thus, it whole especially when these two resistances comparable. In principle, E1461 is not applicable for heterogeneous materials. Thereafter should be used to Using a model based on theory heat diffusion across...

The polyphase channelizer is an important component of a subband adaptive filtering system. This paper presents efficient hardware architecture and VLSI implementation low-power high-performance channelizer, integrating optimizations at algorithmic, architectural circuit level. At the algorithm level, computationally structure derived. Tradeoffs between complexity system performance are explored during fixed-point modeling A computational reduction technique also employed to reduce...

Floating silicon is particularly suitable for the production of power devices and detectors due to its high purity resistivity. However, when crystal diameter increases 200 mm, inhomogeneous distribution dopants in radial direction becomes an important factor affecting quality crystal. In this paper, melt flow interface dopant mm floating zone under different rotation modes using 2D axisymmetric models was calculated. simulation, rotates unidirectionally clockwise or alternates between...

Existing perception models achieve great success by learning from large amounts of labeled data, but they still struggle with open-world scenarios. To alleviate this issue, researchers introduce open-set tasks to detect or segment unseen objects in the training set. However, these require predefined object categories as inputs during inference, which are not available real-world Recently, pose a new and more practical problem, \textit{i.e.}, open-ended detection, discovers without any...

Three-dimensional object detection is one of the key tasks in autonomous driving. To reduce costs practice, low-cost multi-view cameras for 3D are proposed to replace expansive LiDAR sensors. However, relying solely on difficult achieve highly accurate and robust detection. An effective solution this issue combining with economical millimeter-wave radar sensor more reliable multi-modal In paper, we introduce RCBEVDet, a radar-camera fusion method bird's eye view (BEV). Specifically, first...

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Smart mining solutions currently suffer from inadequate big data support and insufficient AI applications. The main reason for these limitations is the absence of a comprehensive industrial internet cloud platform tailored coal industry, which restricts resource integration. This paper presents development an innovative designed to enhance safety, operational efficiency, automation in fully mechanized China. integrates edge computing, real-time processing, AI-driven analytics improve...

Open-world autonomous driving encompasses domain generalization and open-vocabulary. Domain refers to the capabilities of systems across different scenarios sensor parameter configurations. Open vocabulary pertains ability recognize various semantic categories not encountered during training. In this paper, we introduce OpenAD, first real-world open-world benchmark for 3D object detection. OpenAD is built on a corner case discovery annotation pipeline integrating with multimodal large...

An airborne vehicle must avoid obstacles like towers, fences, tree branches, mountains and building across the flight path. So ability to detect locate using on-board sensors is an essential step in autonomous navigation of aircraft low-altitude flight. In this paper, a novel passive range method conditional random field (CRF) presented map 3D scene front moving with image sequences obtained from forward-looking imaging sensor. Finally, dynamic graph cuts was for CRF model recursively update...

Owing to continual advances in computational fluid dynamics, simulations of fluids have emerged as an important means analyzing the aerodynamic characteristics flapping-wing flight. This study establishes model bionic flight and uses dynamic hybrid grid technology divide its flow field other parts. We formulate equations control discretized combine Navier–Stokes equation (N–S equation) with theory vortices solve motion flapping wings. analyzed lift drag generated by wing at different wind...

Methods of measuring the thermal impedance Metal Core PCBs are analyzed. The ASTM D5470 method can measure conductivity insulated layer MCPCBs, but cannot distinguish contacting resistance, which introduced during measuring, and boundary arising from layered structure MCPCBs. Thus, it whole especially when these two resistances comparable. In principle, E1461 is not applicable for heterogeneous materials. Thereafter should be used to Using a model based on theory heat diffusion across...

Wavelet shrinkage is an image denoising technique based on the concept of thresholding wavelet coefficients. The key challenge to find appropriate threshold value, which typically controlled by signal variance. To tackle this challenge, a new approach proposed in paper using variance field diffusion, can provide more accurate estimation. Experimental results are provided demonstrate superior performance approach.