Search Results - Wei Xu

In order to make clear the positioning of the port logistics competitiveness of Qingdao Port among the major coastal ports in China, recognize the development level and shortcomings of its own port, and promote the enhancement of its own port logistics competitiveness, this paper uses the factor ana...

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When a CMOS (Complementary Metal–Oxide–Semiconductor) imaging system operates at a high frame rate or a high line rate, the exposure time of the imaging system is limited, and the acquired image data will be dark, with a low signal-to-noise ratio and unsatisfactory sharpness. Therefore, in order to...

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Path planning for autonomous vehicles is a core component of intelligent transportation systems, playing a key role in ensuring driving safety, improving driving efficiency, and optimizing the user experience. To address the challenges of safety, smoothness, and search efficiency in path planning fo...

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Intermediate- and advanced-stage hepatocellular carcinoma (HCC) continues to present significant therapeutic challenges. Hepatic artery infusion chemotherapy (HAIC), a well-established locoregional treatment for unresectable HCC, has recently demonstrated promising clinical outcomes both as monother...

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This paper is concerned with the asymptotical behavior of the impulsive linearly implicit Euler method for the SIR epidemic model with nonlinear incidence rates and proportional impulsive vaccination. We point out the solution of the impulsive linearly implicit Euler method for the impulsive SIR sys...

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Characiformes, a highly diverse group, are of great economic and ecological significance; however, their complex morphological convergence and adaptive radiation pose challenges to taxonomy, and phylogenetic controversies remain. In this study, the complete mitochondrial genome (mitogenome) of <i...

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Dimming control is critical in practical visible light communication (VLC) systems to satisfy illumination demand. Upon exploiting multiple layers of asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) signals for simultaneous transmission, layered ACO-OFDM (LACO-OFD...

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In conventional optical orthogonal frequency-division multiplexing (OOFDM) systems, such as pulse-amplitude-modulated discrete multitone (PAM-DMT) and asymmetrically clipped optical OFDM (ACO-OFDM), half of the time-domain transmitted signals carry meaningful information, while the other half are se...

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Securing visible light communication (VLC) systems with physical-layer technologies has drawn increasing attention. In this paper, we leverage both transmit beamforming and jamming techniques to enhance communication secrecy for a multiple-input single-output (MISO) VLC system with presence of multi...

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A novel multi-scale copula-based model predictive control (MPC) method is proposed to address the core regulation challenges of runoff hydropower and distributed photovoltaic systems within high-penetration renewable energy grids. Complex spatio-temporal complementarity under ecological constraints...

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Decentralized blockchains have grown into massive and Internet-scale ecosystems, collectively securing hundreds of billions of dollars in value. The complex interplay of technology and economic incentives within blockchain systems creates a delicate balance that is susceptible to significant shifts...

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The inlaying of molten metal into artificial or natural wood cracks represents an innovative combination of metal and wood. After cooling and solidifying, a unique texture is formed, offering a rich aesthetic experience rooted in its intricate decorative texture. This study systematically summarizes...

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The joint optimization of fleet size and task allocation presents a critical challenge in deploying Unmanned Aerial Vehicles (UAVs) for time-sensitive missions such as emergency logistics. Conventional approaches often rely on pre-determined fleet sizes or computationally intensive centralized optim...

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In this study, we aim to maximize the achievable rate for a visible light communication (VLC) downlink multiuser multiple-input&#x2013;single-output (MISO) system deployed with zero-forcing (ZF) beamforming. By incorporating the ZF, transmit signal&#x0027;s nonnegativity, and light-emitting...

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Modern handheld mobile devices are equipped with a complementary metal-oxide-semiconductor (CMOS) image sensor. These image sensors are capable of perceiving intensity changes in optically modulated signals, driving the rapid development of optical camera communication (OCC). In this study, direct-c...

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The primary goal of Chinese agricultural development is to guarantee national food security and supply of major agricultural products. Hence, the scientific work on agricultural monitoring and early warning as well as agricultural outlook must be strengthened. In this study, we develop the China Agr...

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In natural service environments, the surface of traditional stainless steel, heterogeneous alloys or gradient materials with γ-Fe matrix is vulnerable to the external environment and the combined effects of mechanical stress, leading to easy detachment of the metal and oxide film. Strengthening the...

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Reduction in the thickness of air-suspended mirrors to the deep subwavelength scale can facilitate efficient optical and mechanical design. The thinner the mirror, the smaller is its mass, and the more excellent mechanical properties it presents. Thin mirrors are easily displaced by optical radiatio...

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With the widespread use of light-emitting diodes (LEDs) for lighting, their ability to support communications through visible light has become promising for various wireless applications. In particular, visible-light communication (VLC) assisted indoor positioning enjoys its unique advantage of elec...

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