Kai Wei
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View article: Separation Principles and Strategies for an Oil–Water Separation Membrane with Special Wettability
Separation Principles and Strategies for an Oil–Water Separation Membrane with Special Wettability Open
Although numerous reviews have discussed the research progress in “filtration-type” oil–water membrane separation with special wettability, they predominantly focus on the types of membrane separation and preparation methods, without provi…
View article: Characteristics of Cambrian Paleo-Fluid Profiles and Their Implications for Shale Gas Preservation: A Case Study from Well Yidi2 in the Central Yangtze Yichang Area
Characteristics of Cambrian Paleo-Fluid Profiles and Their Implications for Shale Gas Preservation: A Case Study from Well Yidi2 in the Central Yangtze Yichang Area Open
Exploration practice has proved that preservation conditions are one of the critical factors contributing to shale gas enrichment in the Middle Yangtze area. Well Yidi2 is the discovery well of Cambrian shale gas in this area. The paleo-fl…
View article: SIPDO: Closed-Loop Prompt Optimization via Synthetic Data Feedback
SIPDO: Closed-Loop Prompt Optimization via Synthetic Data Feedback Open
Prompt quality plays a critical role in the performance of large language models (LLMs), motivating a growing body of work on prompt optimization. Most existing methods optimize prompts over a fixed dataset, assuming static input distribut…
View article: Evaluation Method of the Vibration Reduction Effect Considering the Real Load- and Frequency-Dependent Stiffness of Slab-Track Mats
Evaluation Method of the Vibration Reduction Effect Considering the Real Load- and Frequency-Dependent Stiffness of Slab-Track Mats Open
The purpose of this research was to investigate and improve the accuracy of the existing slab-track mat (STM) specifications in the evaluation of the vibration reduction effect. The static nonlinearity and dynamic mechanical characteristic…
View article: A simple gated recurrent network for detection of power quality disturbances
A simple gated recurrent network for detection of power quality disturbances Open
This paper presents a new concise deep learning–based sequence model to detect the power quality disturbances (PQD), which only uses original signals and does not require pre‐processing and complex artificial feature extraction process. A …
View article: Macro and meso dynamic response of granular materials in ballastless track subgrade for high-speed railway
Macro and meso dynamic response of granular materials in ballastless track subgrade for high-speed railway Open
Considering the discrete and stochastic properties of granular materials, a two-dimensional numerical model was established to study the dynamic behavior of high-speed railway (HSR) ballastless track subgrade by using finite difference-dis…
View article: Significance of paleo-fluid in the Ordovician–Silurian detachment zone to the preservation of shale gas in western Hunan–Hubei area
Significance of paleo-fluid in the Ordovician–Silurian detachment zone to the preservation of shale gas in western Hunan–Hubei area Open
The studies on the paleo-fluid in the Ordovician–Silurian detachment zone in the Middle–Upper Yangtze area focus on the origin of high-density methane inclusions and the evolution process of formation pressure, but rarely deal with the sig…
View article: Stationary random vibration analysis of vehicle-track coupled system with nonlinear stiffness of railpads
Stationary random vibration analysis of vehicle-track coupled system with nonlinear stiffness of railpads Open
According to time-temperature superposition (TTS) and WLF formula, the temperature-dependent and frequency-dependent kinetic parameters of the railpads of WJ-7 fasteners were predicted based on the experimental results at a certain frequen…
View article: Experimental investigation of the vibration-attenuating effect of rail suspension fasteners on environment vibration induced by subway
Experimental investigation of the vibration-attenuating effect of rail suspension fasteners on environment vibration induced by subway Open
A field test of environment vibration due to subway was carried out so as to investigate the vibration-alleviating effect of rail suspension fasteners in both time and frequency domains. The experimental results show that the time-domain v…
View article: The Influence of Amplitude- and Frequency-Dependent Stiffness of Rail Pads on the Random Vibration of a Vehicle-Track Coupled System
The Influence of Amplitude- and Frequency-Dependent Stiffness of Rail Pads on the Random Vibration of a Vehicle-Track Coupled System Open
The nonlinear curves between the external static loads of Thermoplastic Polyurethane Elastomer (TPE) rail pads and their compressive deformations were measured. A finite element model (FEM) for a rail-fastener system was produced to determ…