【摘 要】
：
This paper reports the use of machine learning to enhance the diagnosis of a dusty plasma.Dust in a plasma has a large impact on the properties of the plasma.According to a probe diagnostic experiment on a dust-free plasma combined with machine learning,a
【机 构】
：
School of Physics,Harbin Institute of Technology,Harbin 150001,People’s Republic of China;School of
论文部分内容阅读
This paper reports the use of machine learning to enhance the diagnosis of a dusty plasma.Dust in a plasma has a large impact on the properties of the plasma.According to a probe diagnostic experiment on a dust-free plasma combined with machine learning,an experiment on a dusty plasma is designed and carried out.Using a specific experimental device,dusty plasma with a stable and controllable dust particle density is generated.A Langmuir probe is used to measure the electron density and electron temperature under different pressures,discharge currents,and dust particle densities.The diagnostic result is processed through a machine learning algorithm,and the error of the predicted results under different pressures and discharge currents is analyzed,from which the law of the machine learning results changing with the pressure and discharge current is obtained.Finally,the results are compared with theoretical simulations to further analyze the properties of the electron density and temperature of the dusty plasma.
其他文献
为更好地开展对大遗址文化资源的有效保护和利用,以中国“十三五”时期实施国家大遗址文化工程的152处大遗址为例,运用扎根理论构建了大遗址文化空间构建的评价体系,结合热点分析、核密度估计探究了国家大遗址文化空间构建的空间分异特征,并分析成因。结果表明:中国大遗址文化空间构建结构均衡性差,受到物质维度发展状况约束显著;空间呈现聚类特征,核心点在物质项趋向分散而在非物质项集中于西安与洛阳两地,整体上中心城市更容易产生高分聚类;经济发展水平是导致上述空间分异的主要因素,且不同编码项间存在敏感度差异;遗址文化元素与属
A newly developed Doppler coherence imaging spectroscopy (CIS) technique has been implemented in the HL-2A tokamak for carbon impurity emissivity and flow measurement.In CIS diagnostics,the emissivity and flow profiles inside the plasma are measured by a
研究普洗、雪花洗、酵素洗、漂洗4种常见化学洗水处理对不同材质、厚度、纹理的牛仔面料的影响。研究发现:当材质相同时,漂洗对牛仔面料经纬向断裂强力的影响最小,依次是雪花洗、普洗和酵素洗;当厚度相同时,漂洗对面料损伤最小、最结实,雪花洗后面料经纬向强力下降最大,最不耐用;当纹理相同时,漂洗影响最小,最结实,普洗影响最大,最不耐用。因此夏季在选择牛仔服装时,建议选择漂洗后的服装,这样既美观又耐磨。
针对大学生宿舍人员出入混杂的情况,基于Android系统和STM32单片机开发一种智能防盗锁。提出系统的软硬件设计方法,给出系统原理图及单片机程序。该系统借助4G DTU移动网络,可快捷地将现场图像反馈到手机App上,从而实现智能防盗功能。
In the presence of energetic particles (EPs) from auxiliary heating and burning plasmas,fishbone instability and Alfvén modes can be excited and their transition can take place in certain overlapping regimes.Using the hybrid kinetic-magnetohydrodynamic mo
介绍一种基于单帧RGBD的全身扫描和人体体型测量算法的设计实现,利用该算法能够在较短时间内测量出较高精度的人体体型参数。实测结果表明,该算法在测量人体体型参数过程中能够达到5.8 mm的平均精度值,当增加扫描次数时测量精度值更高。
An electrostatic Quasi coherent mode has been observed in density fluctuations and perpendicular velocity fluctuations with the frequency range of 3-80 kHz on the Experimental Advanced Superconducting Tokamak using multi-channel Doppler reflectometry.It a
摘 要：本文对开滦技师学院实施企业新型学徒制过程中出现的各种问题进行了归纳总结，并对各类问题提出了解决策略及建议举措，以期为各学校推进企业新型学徒制提供借鉴。 关键词：企业新型学徒制 实施问题 解决策略 2018年，人力资源和社会保障部、财政部印发《关于全面推行企业新型学徒制的意见》。河北省和唐山市在2019年分别下发《关于全面推行企业新型学徒制的实施意见》，积极落实国家政策，鼓励引导企业
摘 要：本文针对昌邑市技能人才需求特点，提出发挥企业在制定培养方案、构建能力目标、搭建课程体系、选择实践场地设施和配备实践教师等方面的主导作用，通过深化产教融合、校企合作，采用现代化培养手段，创新工学结合培养模式，提升人才培养质量和培养效率，缓解当地技能人才结构性短缺矛盾，助推地方经济转型升级和新旧动能转换。 关键词：地方特色 技能人才 学徒制 主导 课 题：本文系山东省教育科学“十三五
2D fast-ion velocity-space distributions have been reconstructed from two-view fast-ion D-alpha(FIDA) measurements on experimental advanced superconducting tokamak (EAST).To make up for the sparse data and incomplete velocity-space coverage with the dual-