Flexural strength, porosity, and surface roughness are three critical properties in extrusion‐based 3D‐printed ZrO 2 ceramic components. However, these usually contradictory direct ink writing (DIW) process. In this work, taking nozzle diameter, filling rate, layer height/nozzle diameter as process parameter variables, response methodology, nondominated sorting genetic algorithm‐II (NSGA‐II) used to perform multi‐objective optimization for the above‐mentioned of DIW‐printed ceramics. The...

To enhance the control accuracy of lane-keeping assistance systems for trucks encountering crosswind-induced lateral deviations to improve stability vehicle, this study proposes a strategy based on linear quadratic regulator (LQR) using path-tracking preview model. First, deviation is calculated Then, an observer vehicle’s sideslip angle designed vehicle tracking model and Kalman filter controller, used solve angle. Finally, feedforward controller LQR two-degrees-of-freedom eliminate...

A novel polar coded hybrid-ARQ (PC-HARQ) transmission with chase combining utilizing powerful successive cancellation list decoder (HARQ-CC-SCL) is explored. We propose that by applying the distance spectrum of code to evaluate its frame error rate, bounds throughput and average number can be derived. Then, this letter proposes an adaptive scheme size-manageable SCL decoding ARQ protocol. Simulations indicate proposed HARQ-CC-SCL obtains a considerable improvement PC-HARQ-CC system,...

Estimating Visual Quality of Street Space (VQoSS) is pivotal for urban design, environmental sustainability, civic engagement, etc. Recent advancements, notably in deep learning, have enabled large-scale analysis. However, traditional learning approaches are hampered by extensive data annotation requirements and limited adaptability across diverse VQoSS tasks. Multimodal Large Language Models (MLLMs) recently demonstrated proficiency various computer vision tasks, positioning them as...

In this letter, an adaptive polar coded cooperation (APCC) is explored in the fading channels. terms of imperfect inter-user channels, way APCC carefully designed based on multi-level structure codes. Meanwhile code construction with dynamic-optimized information sets ensures coding gains at receivers. Moreover, rates two cooperative users are optimized by maximizing throughput efficiency. Simulation results demonstrate bit error rate and advantages over existing schemes.

Sudden changes in the morphological characteristics of trees are closely related to plant health, and automated phenotypic measurements can help improve efficiency health monitoring, thus aid conservation old valuable tress. The irregular distribution branches influence natural environment make it very difficult monitor status field. In order solve problem branch phenotype monitoring tall plants field environment, this paper proposes an improved UNet model achieve accurate extraction trunk...

Document parsing is essential for converting unstructured and semi-structured documents-such as contracts, academic papers, invoices-into structured, machine-readable data. extract reliable structured data from inputs, providing huge convenience numerous applications. Especially with recent achievements in Large Language Models, document plays an indispensable role both knowledge base construction training generation. This survey presents a comprehensive review of the current state parsing,...

In this paper, a new polar coded hybrid automatic repeat request (HARQ) strategy combining multiple packets (MP) of transmission rounds is proposed to improve the throughput, which called MP-HARQ. our scheme, first, part message bits in previous packet and source are jointly encoded retransmission round. Then, backtrack-freezing decoding implemented at receiver. To maximize throughput achieve rate adaptation, we optimize parameters scheme by dynamic programming algorithm on basis estimated...

Faster-than-Nyquist(FTN) is a promising technique due to higher spectral efficiency, but at cost of introducing the inter-symbol interference (ISI) which usually requires computationally demanding detection algorithms. In order reduce complexity receiver, in this paper, novel Tomlinson-Harashima precoding (THP) scheme proposed for FTN system. conventional THP (CTHP) scheme, ISI introduced by time-packing can only be diminished from several preceding information symbols, results large...

The Internet of Things (IoT) in the 5G communication is expected to support energy-constrained low complexity applications with satisfactory throughput efficiency. Hybrid automatic repeat request (HARQ) schemes are required enable wireless reliability high transmission efficiency IoT. To improve performance between low-power devices, this paper, a systematic multi-packet HARQ (SMP-HARQ) scheme using polar codes first proposed. Then, order obtain maximal throughput, parameter configuration...

This letter proposes a blind carrier frequency offset (CFO) estimator for orthogonal time space (OTFS) systems in vehicle-to-infrastructure (V2I) communications. Based on the property of signal power delay-Doppler (DD) domain being affected by CFO, minimizes difference between received and average channel DD to achieve estimation. Moreover, cost function design is theoretically justified as it optimizes performance balancing impact gain domain. According simulation results, proposed better...

In this paper, a rateless coding scheme with enhanced unequal error protection (UEP) property is proposed by concatenating the systematic polar code (SPC) and spinal code, where SPC used as outer inner code. The novel concatenated polar-spinal designed to provide an improved UEP for information different reliability requirements. At receiver, tail CRC-aided Bubble decoding improve performance of codes effectively. Moreover, transmission control carefully time-varying channels. total...

In this study, a coded cooperation scheme using polar codes is explored for high-reliability and low-user complexity applications such as Internet of Things. Firstly, the way among users carefully designed based on systematic cooperative decoding, without decode-and-forward protocol at user. Meanwhile repetition aided code construction decoding algorithm proposed non-cooperative case in terms imperfect inter-user channel. Performance analysis numerical simulation demonstrate bit-error-rate...

In this paper, hybrid automatic repeat request schemes with selective incremental redundancy (SIR-HARQ) are designed for systematic polar codes (SPC), which could be well implemented in the low-power consumption and low-complexity applications like Internet of Things (IoT). Without puncturing, first scheme is searching optimal redundant bits to transmit last remaining range progressively. Secondly, we propose a simpler design transmitting incrementally priority importance parity bits....

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In this paper, an Automatic Repeat Request (ARQ)-aided secure polar coding scheme for the wiretap channel is proposed, where frozen bits of codes are obtained through feedback legitimate recipient. Then, security proposed investigated, and analytical work proves that, both reliability condition can be satisfied, specifically non-degraded channel. Finally, some simulation results reveal that transmit confidential messages reliably securely.

A polar coding scheme for faster than Nyquist (FTN) signaling system, named PcFTN, is proposed in this paper and turbo equalization adopted to detect the received signal. First, characteristics of extrinsic information transfer (EXIT) curve both decoder FTN detector are analyzed. Then construction method codes designed combination code rate speeding parameter achieve target spectral efficiency optimized based on EXIT chart. Simulation results show that PcFTN outperforms bit interleaved coded...

Abstract In recent years, wind energy, as a ubiquitous, easy-to-capture cost-effective clean is accounting for sharp increase in the installed capacity of China’s new energy grid. However, its stochastic volatility has always brought challenges to generation scheduling farms. To better optimize management level farms and improve stability power grid connection, this paper proposes design forecasting system based on deep learning. Our architecture mainly includes data pre-processing,...

This paper discussed the experimental results of performance an organic Rankine cycle (ORC) system with ultra-low temperature heat source.The low boiling point working medium R134a was adopted in system.The simulated source (SHST) this work set from 39.51°C to 48.60°C by module.The influence load percentage (LPSHS) between 50% and 70%, rotary valve opening (RVO) 20% 100%, resistive 36 Ω 180 or no-load generator, as well autumn winter ambient on were studied.The showed that stability promoted...

Recently, with the rise of web images, managing and understanding large-scale image datasets has become increasingly important. Vision Large Language Models (VLLMs) have recently emerged due to their robust vision-understanding capabilities. However, training these models requires vast amounts data, posing challenges efficiency, effectiveness, data quality, privacy. In this paper, we introduce SynthVLM, a novel synthesis pipeline for VLLMs. Unlike existing methods that generate captions from...

In this paper, a new rateless scheme of polar codes is designed via extending and puncturing for unknown AWGN channel. the proposed scheme, heuristic pragmatic construction method utilized coding, which could be applied time-varying By copying information bits to more reliable bit channels when codes, obtain full coding gain. Moreover, improve throughput performance, we explore optimal initial rate first transmission achieve maximal throughput. Simulation results indicate that our block...

In this study, a rateless transmission scheme with information unequal error protection (UEP) is proposed by using polar codes. The suitable for transmissions in time‐varying channels, as well pursues UEP goal of different reliability requirements. Firstly, the authors design an unknown channel via extending polarisation matrix and importance‐based puncturing. particular, algorithm ensuring full coding gain performance on basis transmission. Moreover, consideration combining flexible...