基于图象处理的舌苔润燥分析方法的研究

二分光反射模型描述了物体的光反射机理,它认为物体表面的颜色由面反射和体反射组成。为了采用图象处理技术进行舌苔润燥分析,提出一种基于二分光反射模型的有效方法;研究了亮斑的成因及ＣＣＤ摄像机特性对彩色图象成像的影响,较好地解决了亮斑的检测和识别问题;并进一步对这种舌苔润燥分析方法的应用结果进行了探讨。     

模型层次与自省思想研究

具备自省能力的系统能够随着环境改变自觉地改变自身的结构和行为,以适应环境变化后的需求。本文试图从模型层次和语言角度探讨实现自省思想的新思路,并给出一个体现自省思想的系统运行框架结构。系统的自省可以通过能够随不同条件改变模型元素结构和行为的建模语言获取,现有元模型侧重于结构上的规定,对元素的行为则几乎没有涉及。本文在元模型中显式地引入操作,以控制模型元素的结构和行为。     

Investigation of the nucleation and growth of SiC nanostructures on Si

Using in situ reflection high energy electron diffraction (RHEED), ex situ atomic force microscopy (AFM) and transmission electron microscopy (TEM) the early stages of SiC growth on Si during the carbonisation were investigated in a solid source molecular beam epitaxy equipment. Different mechanisms of SiC precipitate growth by SSMBE were found. The SiC growth during carbonisation of Si(111) at 600°C is controlled by diffusion and at higher temperatures by a two-dimensional nucleation process, which is mononuclear at 660°C and polynuclear above 750°C. At temperatures greater than 750°C and 850°C three-dimensional nucleation occurs at (111) and (100) surfaces, respectively.     

粗糙海面对高频雷达地波空间场分量传播损耗的影响

为研究粗糙海面对高频地波雷达的影响,本文首先引入了更符合实验结论的粗糙海面相干谱反射系数的修正公式,并将其代入到雷达方程,计算了高频雷达地波空间场分量的传播损耗。本文所预期的结果符合架设于海岸的高频地波雷达的实际环境。     

DBR掺饵光纤激光器的功率特性研究

本文主要研究ＤＢＲ掺饵光纤激光器的功率特性。通过对光纤Ｂｒａｇｇ光栅的光谱特性和激光器的传播方程的分析,得到了阈值泵浦光功率、掺饵光纤长度、Ｂｒａｇｇ光栅反射率与激光器输出光功率之间的关系。与近期报道的实验数据进行了比较,结果十分吻合。     

应用浅层反射地震法探测采空区

由于顶板岩层冒落的不规则性,金属矿山的采空区形状是比较复杂的.本文详细介绍了在江西某铜矿Ⅶ号矿体运用浅层反射地震法对采空区进行的探测工作,这种探测得到的采空区信息包含了受扰动较大的岩体,它更有利于评价采空区上部地表的稳定状况.     

对象式ITS模型的研究

ITS模型是建造实用ITS系统的基础,亦涉及知识表示、推理策略等多种人工智能技术。该文讨论了反射的基本思想,近而以对象式知识库结构为基础,引入反射机制并集成基于类和基于原型的两种面向对象风格,提出了基于反射的对象式智能教学系统模型RITM（ReflectiveIntegratedTurtoringModel）。其解题策略是基于元对象控制的基于事例的推理而设计的。该文最后介绍了在系统实现方面所做的工作。     

电磁波在光栅表面上反射和衍射的理论研究

本文从严格的场匹配方法出发,对电磁波在矩形截面光栅上的反射和衍射进行了理论研究。对这种光栅作为频率扫描天线的计算显示出,不论满足或不满足布喇格条件,在较宽的角度范围内入射,经调节槽宽和槽深都可获得理想的耀射。对于不满足布喇格条件,在两个互易角中较大的一个入射时,-1次衍射波有较高的效率和较宽的频带。而对这种光栅作为奥罗管中反射镜的特性的理论计算指出,它具有极宽的频带。同时本文还给出了不同频率平面波垂直入射时的等效光栅位置,以及电磁波在光栅表面反射时所引起的相位改变。     

Controllable synthesis of FeSe2/rGO porous composites towards an excellent electromagnetic wave absorption with broadened bandwidth

Due to the escalating demand for electronic dependability and defense security, there has been a surge in research into broadband and lightweight microwave absorbers. Porous composites that are lightweight and plentiful in interfaces have the potential to be high-performance absorbers due to their ability to attenuate waves in a balanced manner and match impedance. “Using a solvothermal technique we generated FeSe₂/rGO composites with a porous topology. By varying the weight of rGO, the electromagnetic properties of FeSe₂/rGO composites may be finely tuned. Impedance matching and attenuation capability are both improved as a direct result of the porous structure and the appropriate electromagnetic parameters. FeSe₂/rGO composites benefit from the tunable composition, porous structure, and strong synergistic effect between FeSe₂ and rGO sheets and display outstanding microwave absorption performance with an ultrabroad bandwidth approaching 5.2 GHz with a thin thickness of 1.6 mm which covers 75% of the studied frequency range. At the same thickness, a significant reflection loss of ?43.7 dB is attained. This work not only enables the tuning of electromagnetic parameters but also expands the use of high-performance microwave absorption devices. Remarkable microwave absorption ability, of the porous composites FeSe₂/rGO can be utilized as a high-performance microwave absorber.”