Jun Tian

Nov 15, 2024 | bmccancer.biomedcentral.com | Jun Tian |Weizhi Chen

In patients with radiographically identifiable gastrointestinal stromal tumors (GIST) that can be completely surgically resected, preoperative biopsy is deemed unnecessary . At this juncture, the development of a simple and reliable preoperative prediction model is particularly crucial. This study constructed a prediction model for GIST Ki-67 expression based diameter, growth mode, enhancement mode, EVFDM, PLR, and OPNI.

Jul 10, 2024 | mdpi.com | Yanyan Wang |Yuan Qiu |Zhijun Li |Jun Tian

1. IntroductionHydraulic support is a kind of hydraulic power device that utilizes liquid pressure to generate support force and realize automatic movement to support and manage the roof. It is an indispensable supporting equipment for comprehensive mechanized coal mining [1,2,3]. However, due to its harsh working environment, the inner wall of its cylinder is easily corroded and damaged, so it needs to be rebuilt and repaired [4,5].

Mar 4, 2024 | mdpi.com | Weiguo Zhang |Xiaowei Wu |Jun Tian |Xi Huang

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Jul 7, 2023 | mdpi.com | Wentao Wang |Chen Ye |Jun Tian

6.2. Comparison of SGGTSO with Other Algorithms on 3D UAV Path Planning ProblemsFigure 6 shows the top views of the 3D UAV path planning routes of SGGTSO with five competing algorithms in nine different scenarios. The top view of the paths planned by each algorithm clearly shows that all the algorithms in this experiment are able to plan viable paths that satisfy the safety constraints, turning angles, climb/dive angles and height constraints.