The depth of seed burial and impact damage are critical indicators sowing quality in wheat accelerated seeding technology. To investigate the factors influencing damage, a simulation model soil penetration was developed using EDEM (2018) software, motion into simulated analyzed to identify main soil. Seeding velocity, equivalent diameter, surface energy were selected as experimental factors, while maximum force chosen response indicators. Both single-factor tests three-factor, three-level...

The shape of particles is a critical determinant that significantly influences the accuracy discrete element simulations. To reduce discrepancies between model wheat seeds and actual particle shapes, to enhance Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) coupling simulations in gas–solid two-phase flow studies, We employed laser scanning inverse modeling techniques develop three-dimensional (3D) reconstruction seed. Subsequently, we Rocky DEM simulation software polyhedron...

Many sensor nodes have been widely deployed in the physical world to gather various environmental information, such as water quality, earthquake, and huge dam safety. Due limitation batter power, memory, computational capacity, missing data can occur at arbitrary time slots. In extreme situations, some sensors may lose readings consecutive The successive takes side effects on accuracy of real-time monitoring well performance analysis wireless networks. Unfortunately, existing solutions...

To improve the detection accuracy for multiple small targets with Raster R-CNN model, we propose a Multitask Enhanced dam crack image method based on Faster (ME-Faster R-CNN) to adapt of cracks in different lighting environments and lengths. solve problem insufficient samples cracks, transfer learning methods are utilized assist network training data enhancement. In ME-Faster R-CNN, ResNet-50 is firstly adopted extract features original images obtain feature map. Then, map input into...

A frequency-domain turbo equalization (FDTE) scheme without cyclic prefix (CP) or zero padding is proposed for single-carrier, multiple-input-multiple-output underwater acoustic communication. In the first iteration of FDTE, received continuous data stream divided into consecutive blocks and a combined inter-block-interference (IBI) cancellation overlapped windowing used to diagonalize each block low-complexity detection in frequency domain. Since second iteration, IBI CP reconstruction are...

To avoid the issues of undesired soil compaction and seeding depth variation caused by downforce fluctuation corn no-till planter, influence structural parameters air spring on was researched in this paper, establishing gas–solid coupling simulation model spring. The test bench built to verify model; showed that vertical output force error 4.79%, pitch diameter 0.76%, pressure 5.07%. cord angle, piston angle were used as influencing factors carry out single-factor experiments. influences...

Abstract As satellite imagery technology advances, remote sensing plays an increasingly prominent role in modern society. Nevertheless, the limitations of existing imaging sensors and complex atmospheric conditions constrain quality raw data, posing challenges for interpretation noise reduction. Super‐resolution focuses on enhancing low‐quality, low‐resolution images. In this study, we introduce a method that utilizes high‐order degradation model to generate We employ Generative Adversarial...

To solve the target search problems for unmanned aerial vehicle (UAV) swarm in uncertain environments without prior knowledge, this paper designed a communication-constrained coverage model and new optimization algorithm. We proposed multi-objective based on grid environment modeling UAVs with communication constraints. Meanwhile, to optimize model, collaborative scheme predictive control constraints (CSS-MPCCC) UAVs' path planning decision-making at each moment. CSS-MPCCC is two-stage...

Evaluating the mechanical properties such as compressive strength, tensile and modulus of elasticity (MOE) concrete is crucial for design, construction, quality control engineering projects. Developing a comprehensive theoretical-based numerical model to predict considered challenging, owing diversity admixtures curing environment affecting performance modern concrete. The deep learning (DL) gives feasible approach data-driven methods accurate prediction various material these years....

ABSTRACT A low‐complexity turbo detection scheme is proposed for single‐carrier multiple‐input multiple‐output (MIMO) underwater acoustic (UWA) communications using low‐density parity‐check (LDPC) channel coding. The low complexity of the algorithm achieved in two aspects: first, frequency‐domain equalization technique adopted, and it maintains a irrespective highly dispersive UWA channels; second, computation soft equalizer output, form extrinsic log‐likelihood ratio, performed with an...

Collecting a myriad of prototype data through various types monitoring sensors plays virtual important role in many aspects dam safety such as real-time grasp state, exposure hidden dangers, and inspection design construction. However, the current methods prediction are weak long-term sequence nodes with missing abnormal error value. Moreover, limitation caused by apparatus, environmental factors, network transmission can lead to deviation inconsistency diagnosis evaluation local region. In...

Focus on the issue of complex process and long response time task offloading in multi-cloudlet, a weighted self-adaptive inertia weight particle swarm optimization algorithm (WAIW-PSO) based multi-cloudlet collaboration is proposed. Firstly, execution mobile terminal-cloudlet-remote cloud modeled. Secondly, considering competition computing resources by multiple users, model constructed. Since complexity solving optimal scheme excessively high, WAIW-PSO proposed to solve problem. The...

Cloud computing can provide the dynamic and elastic virtual resources for users to execute large-scale tasks. It has become hot spot in academic industry fields. The tasks scheduling plays an important role computing. should adopt scheme dispatch appropriate considering some QoS constraints, e.g., task execution time, completion resource utilization, cost. At present, schemes consider associate problem with constraints real applications. In this paper, concerning delay of associated cloud...

MapReduce framework is becoming more and popular in various applications. However, Hadoop a seriously limited by its scheduler which does not work well the heterogeneous environment. LATE scheduling algorithm takes environment into consideration. it falls short of solving poor performance due to static manner during computing tasks progress. In order improve cluster cloud environment, FiGMR -- Fine-Grained dynamic MapReeduce algorithm, proposed. can significantly reduce execution time...

Accurately identifying and locating water-crossing objects is of utmost importance for environmental protection. However, traditional detection algorithms often exhibit poor anti-interference performance low accuracy in complex environments. To address these issues, this paper proposes a YOLOW algorithm based on one-stage object the automatic identification water objects. The proposed incorporates two new modules, namely SPDCS module SPPAUG module, to improve model’s performance....

Abstract Salient object detection (SOD), one of the most important applications in field computer vision, aims to extract visually appealing regions scenes. However, improvement accuracy existing salient optical remote sensing images (ORSI‐SOD) is usually accompanied by an increase network complexity, which affects application these models. Motivated this, a novel lightweight edge‐supervised neural for ORSI‐SOD proposed, named CSFFNet. Specifically, backbone (ResNet34) first lightened...

This paper proposes a frequency-domain detection scheme for single-carrier multiple-input, multiple-output (MIMO) underwater acoustic (UWA) communication using low-density parity-check (LDPC) codes. The new employs turbo equalization technology together with iterative decoding technique, leading to double-layer structure. In the outer-layer equalization, soft-decision equalizer (FDE) iteratively exchanges soft information LDPC channel decoder. Within each iteration, decoder performs...

Focusing on the problems of poor filling ability and stability mechanical wheat seeder complicated structure pneumatic seeder, a special air suction wheel-hole single seed drill for remote controlled self-propelled dibbler in plots was designed this paper. According to agronomic requirements precision seeding plots, wheel radius set at 180 mm 16 holes. Using discrete element simulation software EDEM analyze disturbance effect different parameter designs, thickness ring mm, height mouth 4.5...