| 1. | Broadband multifrequency electromagnetic measurement 宽带多频电磁测量 |
| 2. | Electromagnetic measurement experiment technology 电磁测量实验技术 |
| 3. | Electromagnetic measurement experiment technology 电磁测量实验技术 |
| 4. | Broadband electromagnetic measurement 宽带电磁测量 |
| 5. | Precise electromagnetic measurement 精密电磁测量 |
| 6. | Electromagnetic measurement is an important way for diagnostic purposes in biomedical applications , and the research of which is a very challenging topic 在生物医学工程领域,电磁测量是一个重要的手段,对它的研究是一个极富挑战性的课题。 |
| 7. | At first , the thesis briefly introduce the development of electromagnetic measurement , meanwhile some classic methods about it were described in the second section , calculating the forward problem , for which will be used for iteration by genetic algorithm ( ga ) 本文首先简要回顾了电磁测量的发展,介绍了部分电磁测量方法。在第一部分,本文首先建立了对生物组织电导率重构的数学模型,对正问题进行了求解。 |
| 8. | Conductivity reconstruction , one kind of electromagnetic measurement , reconstructs conductive property distribution of the biological tissue exposed to electromagnetic fields by measuring the fields around it . this thesis presents the application of improved genetic algorithm to reconstruct the conductivity distribution of stratified biological tissue by measuring the change of impedance in the coil 本文主要研究在载流线圈作用下,通过测量生物组织产生的二次场对线圈阻抗的改变,应用改进的遗传算法重构分层生物组织各层电导率和厚度的方法。 |
| 9. | Abstract : one of the unsolved problems of the high power application of high temperature superconductors is how to lower the energy dissipation induced by flux motion . due to the extremely high anisotropy , small coherence length and weak pinning potential , the mixed state phase diagram which is tightly related to the flux dynamics becomes very complicated . a brief account is given of the field induced crossover of criticalities of energy dissipation , which has been observed in our recent sensitive electromagnetic measurement 文摘:高温超导体在强电方面应用的关键问题是如何克服磁通运动所造成的能量损耗.由于存在极强的各向异性、短的相干长度和小的磁通钉扎势,因此与磁通运动紧密相关的混合态相图变得很复杂.文章综述了根据一系列灵敏的电磁测量所观察到的磁场诱导的能量耗散行为的转变 |