16,184 Result(s)
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**li Zhou
Engineering
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Article
GBDT4CTRVis: visual analytics of gradient boosting decision tree for advertisement click-through rate prediction
Gradient boosting decision tree (GBDT) is a mainstream model for advertisement click-through rate (CTR) prediction. Since the complex working mechanism of GBDT, advertising analysts often fail to analyze the d...
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Article
Optimal Gear Shift Control of Two-Speed Dual-Clutch Transmission in Electric Vehicle for Smoothness and Friction Loss Reduction
An optimal shift control strategy for electric vehicles with the two-speed dual-clutch transmission is proposed to reduce the vehicle jerk and friction work during gear shift. The dynamic model of the powertra...
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Article
Pore Water Pressure and Stress Changes During the Construction of Stiffened Deep Cement Mixing Piles
Investigations on the changes in pore water pressures and stress during the construction of stiffened deep cement mixing (SDCM) piles are scarce, resulting in an unsatisfactory understanding of the bearing cap...
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Article
Leader-Following Consensus of Multi-Agent Systems via Fully Distributed Event-Based Control
This paper aims to study the leader-following consensus of linear multi-agent systems on undirected graphs. Specifically, we construct an adaptive event-based protocol that can be implemented in a fully distri...
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Article
Open AccessCore-rim structured MXene@SiO2 composites as oil-based additives for enhanced tribological properties
Herein, we have prepared SiO2 particles uploaded MXene nanosheets via in-situ hydrolysis of tetraetholothosilicate. Due to the large number of groups at the edges of MXene, SiO2 grows at the edges first, forming ...
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Article
Aerodynamic Design and Performance Research of Racing Cars with Adaptive Control of Attitude
Aerodynamic forces acting on a racing car will impact its handling, stability, and steering characteristics. Oversteering typically occurs in racing cars with a significant front-end downforce. In the process ...
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Article
Open AccessStochastic uncertain lubrication in gear transmission subjected to tribodynamic loading
A stochastic uncertain tribodynamic model is established for a spur gear pair for the first time. The stochastic uncertainty of pinion rotation speed propagated to lubrication performance is investigated. The ...
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Article
Improvement of the Unequal Division Shear Zone Model Based on Sensitivity Analysis and Classification of Uncertain Parameters
Inversion of relevant parameters of cutting analysis model through experimental data is an effective method to improve the prediction accuracy of the model. In view of the present situation that the prediction...
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Open AccessExploring the relevance between load-bearing capacity and surface friction behavior based on a layered hydrogel cartilage prototype
Cartilage is well lubricated over a lifetime and this phenomenon is attributed to both of the surface hydration lubrication and the matrix load-bearing capacity. Lubricious hydrogels with a layered structure a...
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Article
Dowsing: a task-driven approach for multiple-view visualizations dynamic recommendation
Most users are able to obtain exploratory ideas from a data table but cannot clearly declare their analysis tasks as visual queries. Visualization recommendation methods can reduce the demand for data and desi...
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Article
Survey and open problems in privacy-preserving knowledge graph: merging, query, representation, completion, and applications
Knowledge Graph (KG) has attracted more and more companies’ attention for its ability to connect different types of data in meaningful ways and support rich data services. However, due to privacy concerns, dif...
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Article
Reward Function Design Method for Long Episode Pursuit Tasks Under Polar Coordinate in Multi-Agent Reinforcement Learning
Multi-agent reinforcement learning has recently been applied to solve pursuit problems. However, it suffers from a large number of time steps per training episode, thus always struggling to converge effectivel...
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Article
Parallel Parking Path Planning and Tracking Control Based on Simulated Annealing Algorithm
To address the issues of curvature discontinuity and terminal tire non-return in the parallel parking of autonomous vehicles, a novel parallel parking path planning method based on the combination of the quint...
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Article
Unsupervised domain adaptation via feature transfer learning based on elastic embedding
Supervised classification algorithms usually require a large quantity of well-labeled samples for training to achieve satisfied performance. Nevertheless, it is prohibitively difficult to create such datasets ...
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Article
Enhanced DNA sequence design with learning PSO
DNA computing is a novel computing technology with high storage density and parallelism and promising applications. The reliability of DNA computing relies on data encoded DNA sequences, but designing qualifie...
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Article
Safe formation control of multiple unmanned aerial vehicles: control design and safety-stability analysis
Both safety and stability are primary performance criteria for multi-unmanned aerial vehicle (multi-UAV) systems in many coordination tasks. Existing approaches often consider safety and stability separately. ...
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Article
VIVIAN: virtual simulation and visual analysis of epidemic spread data
Visual analysis of epidemic spread data is crucial in understanding the process of epidemic transmission, tracing the source of infection, evaluating the development of epidemic, and formulating reasonable pol...
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Article
Open AccessA new kinematic model for revolute clearance joints with noncircular bushing and pin in planar multibody systems
Due to manufacturing error and wear, the profiles of bushing and pin in revolute clearance joints are usually non-circular, while traditional kinematic models for revolute clearance joints generally assume a c...
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Article
Consistent multi-view subspace clustering with local structure information
Multi-view subspace clustering has attracted extensive attention in recent years because it can fully utilize the inherent characteristics of each view data. The low-rank structure in many current successful m...
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Article
Soft, body conformable electronics for thermoregulation enabled by kirigami
在节约能源与保证生活质量的同时, 将热电设备 (TEDs) 应用于个性化的体温调节具有非常大的吸引力。直接贴附在皮肤上的热电设备能够显著降低因冷却整个环境而产生的能量浪费。然而, 在面对人体皮肤呈现的极端动态的几何形状和应变, 传统的热电设备无法贴合人体轮廓以达到最佳的体温调节效果。因此, 本文基于剪纸技术设计了一种具有出色的透气性、柔性和共形性的可穿戴式热电设备。数值分析和实验结果均表明, 本文开发的热电设备能够...
