Search Results

In this paper, we construct a class of linear complementary dual (LCD for short) 2-quasi-abelian codes over a finite field. Based on counting the number of such codes and estimating the number of the codes in this class whose relative minimum ...

This design builds a self-driving car based on the MSPM0 series MCU development board, which can navigate and drive automatically along a designated path. Meanwhile, the car can also perform functions such as emitting sound and light signals at a fixed ...

In today's rapidly evolving technological landscape, humanity's exploratory ambitions extend to higher and more distant skies, as urban skylines are filled with countless modern structures. These towering skyscrapers, reaching heights of several dozen ...

The automatic driving car system uses MSPM0G3507 as the main control chip. It is mainly composed of gyroscope module, sensor module, key module and power module. Two PWM drive motors are used to complete the starting and braking of the trolley. Five gray ...

The aim of the study was to characterize retractions due to randomly generated content. A cross-sectional study was performed, using Retraction Watch database, Journal Citation Reports, Scopus, and journal official websites as data sources. Papers ...

• A ReYOLO-MSM evaluation method is proposed for shiitake mushroom stick.
• Improved ReYOLO rotating elliptical box model for shiitake mushrooms.
• Combining monocular vision and stick-mushroom growth relationship for multi-scale ...

Robotic selective harvesting of mushroom sticks is a promising approach in the factory production scenario of shiitake mushroom sticks cultivation, which requires accurate evaluation of the growing status of target sticks by detecting mushroom ...

• The S2CPL model can segment and extract growth features of green asparagus infield.
• Lightweight convolution and attention mechanism are introduced to improve YOLO v8.
• A 3D morphology extraction method is proposed for length-...

Robotic selective harvesting is an ideal method for bionic manual harvest of green asparagus. However, the harvesting robot encounters difficulties in evaluating the suitable harvest due to the tilt and bending of the long stem, as well as ...

• Sequential picking planning method 3MSP2 is proposed for clusters of congregated tomatoes.
• The eye-on-shoulder and eye-in-hand two RGB-D camera setting are preset in robotic piking.
• Optimal sequence planning method is presented for ...

Fast and effective picking planning from candidate fruits is important to improve the efficiency and success rate of robotic selective harvesting. However, it is a challenge for tomato picking decisions to simultaneously meet low- damage and high-...

• A two-stage CFD simulation method is proposed for droplets deposition in air-assisted spraying.
• The influence of leaves deformation on droplet movement and deposition is considered.
• 3D point cloud scanning technique is used to ...

In air-assisted spraying, assisted airflow leads to flexible leaf deformation and affects distribution of droplet deposition in canopies. However, analyzing droplet deposition behavior during dynamic changes in canopies is challenging. To address ...

To investigate the influence of experiential value and user satisfaction on the design of community-centered aging-friendly public products and users' intention to continue using them, this study focused on elderly community users. Using a structural ...

• Proposed HGCA-YOLO model fully extracts features of invisible spears (soil leak).
• Hyperparameter evolution, Ghost, and coordinate attention mechanisms introduced to new model.
• Model parameters reduced by 46.2% with AP increased by ...

Timely harvesting white asparagus depend on the detection of two forms: the emerging unearthed spear tips and the soil leaks raised by earthed spears. Accurate detection of the small spear tips and the invisible spears in the complex backgrounds ...

• A novel Optical Droplet Edge Imaging method for droplet measurement is proposed.
• A fast in-situ measuring portable device for droplet deposition is designed.
• An image processing algorithm is proposed to obtain deposition ...

Accurate and rapid measurement of droplet deposition on the spray target provides feedback data on spray quality to optimise application parameters and confirm crop protection efficacy. However, simultaneously meeting the requirements for field ...

• A simplified and continuous harvesting mode for shiitake mushrooms is proposed.
• A batch harvesting picker is designed to picking shiitake mushrooms grown on sticks.
• The mechanism and parameters are analyzed by picking tests, FE and ...

Shiitake mushroom must be harvested in time or its commercial value will be reduced. At present, manual harvesting is time-consuming and labor-intensive, and the robotic selective harvesting is far from mature and marketable. Based on the ...

This paper addresses a sequencing problem with uncertain task times in mixed model assembly lines. In this problem, task times are not known exactly but are given by intervals of their possible values. A mixed integer non-linear programming model ...

This study focuses on the steel industry, summarizing and clarifying relevant research by previous academics about investment value. Firstly, based on qualitative research, this study investigated the macro, meso, and micro factors that affect the ...

• A meta-model-based Shop-floor digital twin (SDT) construction approach and comprehensive architecture are proposed.

Digital twin is regarded as the virtual counterpart of physical entities, which can mirror the physical behavior and performance. Digital twin technology provides strong support for the achievement of cyber-physical system and ...

• Explore a novel approach for canopy reconstruction with occluded structure recovery.
• Propose a Generative Adversarial Net to complete the occluded leaves.
• Propose a point–cloud reconstruction algorithm to recover fragmental point-...

The inner leaves of crop canopies are obscured by outer branches and leaves, leading to information loss and observation difficulty of the occluded canopy structure using modern crop monitoring techniques. It has restricted the development of ...

Faced with the challenges of intelligently managing the entire product lifecycle, traditional management techniques no longer meet the complex demands of modern enterprises. To address it, we employ an ontology modeling method based on a ...

• A novel bud thinning mode for Agaricus bisporus mushrooms was proposed.
• Analyzed dynamic swing action and verified separation operation feasibility.
• An end-effector of bud thinning with steering, separation and removal mechanisms ...

Removing some of the overly dense buds of Agaricus bisporus in factory-cultivated mushroom beds through a process called bud thinning, as required by agronomy, can improve the top-grade product rate and yield and reduce the waste of production ...

• Finite Element and Lattice-Boltzmann co-simulation is proposed to analyze dynamic behavior between leaves and airflow.
• The dynamic deformation of leaves driven by flow field at different moments was analyzed by two-way fluid–structure ...

The airflow of air-assisted spraying can widen droplet transport channel, increase the variable-track motion of droplets, and uniform of droplet deposition in canopy. However, it is still a challenge to analyze the dynamic interaction behavior ...