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Reclosers and Fuses

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Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
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Encoding01:19

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Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
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A circuit breaker is a device engineered to interrupt fault currents and sometimes reclose automatically. When a fault current is detected, the breaker separates the electrical contacts, which generates an arc. This arc is extinguished by methods such as elongation, cooling, or splitting, depending on the breaker's design. Breakers are categorized based on the voltage they operate at and the medium used for arc extinction, such as air, oil, SF6 gas, or vacuum.
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Titrimetric analysis in solution chemistry involves measuring the volume of solutions and is often called volumetric analysis. The standard solution of known concentration in the burette is called the titrant, whereas the solution of unknown concentration in the flask is called the analyte, or titrand. Titrimetric analyses can be classified into four types based on the reactions between the titrant and analyte.
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Cardiovascular diseases, encompassing a range of conditions, can significantly affect the heart's operations and the overall circulatory system. These conditions impair the heart's ability to pump blood, leading to a deficit in oxygen supply to crucial organs. Anomalies in the heart's electrical system, known as arrhythmias, can cause heartbeats to accelerate or slow down. Usually, heart rates increase during physical activity and decrease while resting or sleeping. However,...
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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
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基于机器学习的膀病理的多类分类,使用融合的3D CT放射性和3D自动编码器深度特征.

Hongwei Xiao1,2, Weihao Liu3, Huancheng Yang1

  • 1Department of Radiology, The Third Affiliated Hospital of Shenzhen University (Luohu People's Hospital), No. 47 Youyi Road, Luohu District, Shenzhen, Guangdong 518000, China.

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概括

本研究介绍了一种使用混合放射学和深度学习进行膀病理学分类的自动化CT扫描分析框架. 该系统准确地识别正常的膀,结石,癌症和囊炎,帮助临床诊断.

关键词:
膀癌是一种癌症.这就是 Calculi Calculi 的意思.囊炎是一种囊炎.混合功能融合混合功能融合机器学习 机器学习

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科学领域:

  • 放射学 放射学是一门学科.
  • 人工智能的人工智能
  • 医学成像分析 医学成像分析

背景情况:

  • 精确的多类分类来自非对比CT的膀病理对于及时诊断和治疗至关重要.
  • 目前的方法可能缺乏有效的临床整合所需的精度和自动化.

研究的目的:

  • 开发一个自动化分析框架,将混合放射学和来自非对比CT图像的深度学习功能集成在一起.
  • 为了实现膀病理的多类分类,包括正常,结石,癌症和囊炎.

主要方法:

  • 对902个CT扫描进行了回顾性分析.
  • 一个集成的管道涉及自动膀细分 (3D-UNet),混合特征提取 (放射学+深度学习),特征选择 (LASSO) 和分类 (XGBoost).
  • 绩效使用AUROC进行评估,并采用一对一的策略和交叉验证.

主要成果:

  • 该框架实现了高的一对其余的AUROC:0.94对于结石,0.92对于癌症,0.90对于正常的膀和0.83对于囊炎.
  • 针对四类歧视的微平均AUROC为0.94.
  • 放射性特征是结石/正常分化的关键,而深度特征对癌症/囊炎分类至关重要.

结论:

  • 混合CT分析框架在自动化多类膀病理学分类中展示了临床相关的性能.
  • 放射性和深度特征的互补作用提供了一个可解释的诊断辅助.
  • 该框架显示了将其整合到临床工作流程中的潜力,以支持差异诊断.