摘要：提出了一种基于光滑圆波导结构的高阶TEmn模圆极化器.运用耦合波理论和数值计算方法对93 GHz TE5,1模圆极化器进行了研究和设计.设计的圆极化器由过渡段和移相段组成,结构简单,易于实现.在88～98 GHz的频带内,最大轴比低于1.18.空间辐射测试结果证明了这种高阶圆极化器的性能.为高性能的低阶波导模式圆极化器的设计提供重要参考。

摘要：橱窗陈列设计在服装专卖店的运营中是非常重要的,本文从服装专卖店的橱窗陈列设计分类、设计原理、设计形式、橱窗广告语等几个方面对服装专卖店橱窗陈列设计进行了详尽的分析与阐述。

摘要：AIM： To assess acellular ostrich corneal matrix used as a scaffold to reconstruct a damaged cornea. METHODS： A hypertonic saline solution combined with a digestion method was used to decellularize the ostrich cornea. The microstructure of the acellular corneal matrix was observed by transmission electron microscopy （TEM） and hematoxylin and eosin （H＆E） staining. The mechanical properties were detected by a rheometer and a tension machine. The acellular corneal matrix was also transplanted into a rabbit cornea and cytokeratin 3 was used to check the immune phenotype, RESULTS： The microstructure and mechanical properties of the ostrich cornea were well preserved after the decellularization process, in vitro, the methyl thiazolyl tetrazoUum results revealed that extracts of the acellular ostrich corneas （AOCs） had no inhibitory effects on the proliferation of the corneal epithelial or endothelial cells or on the keratocytes, The rabbit lamellar keratoplasty showed that the transplanted AOCs were transparent and completely incorporated into the host cornea while corneal turbidity and graft dissolution occurred in the acellular porcine cornea （APC） transplantation, The phenotype of the reconstructed cornea was similar to a normal rabbit cornea with a high expression of cytokeratin 3 in the superficial epithelial cell layer, CONCLUSION： We first used AOCs as scaffolds to reconstruct damaged corneas. Compared with porcine corneas, the anatomical structures of ostrich corneas are closer to those of human corneas. In accordance with the principle that structure determines function, a xenograft lamellar keratoplasty also confirmed that the AOC transplantation generated a superior outcome compared to that of the APC graft.

摘要：AIM: To describe the design and preliminary results of the hospital based epidemiological study for diabetic retinopathy (HBESDR), an ongoing epidemiological study to estimate the prevalence of diabetic retinopathy (DR) and to elucidate the clinical, anthropometric, biochemical and any other risk factors associated with diabetic retinopathy. METHODS: Totally 2000 diabetes will be recruited from the Diabetes eye clinic in the First Affiliated Hospital of China Medical University. All subjects underwent blood sugar estimation and Oral Glucose Tolerance Test to diagnose diabetes. All diabetes would undergo complete questionnaire, a comprehensive eye examination. Blood and urine would be collected for biochemical investigations. All fundus photographs for any DR will be graded. Participants who need treatment will be sent to the ophthalmic clinic and follow-up interval program for all subjects will be suggested. A computerized database is created for the records. RESULTS: To date, 1174 diabetes have been recruited, there were 350 (29.81%) DR in all diabetes, most of them were with mild non-proliferative diabetic retinopathy (NPDR) (139, 39.71%); 71 (20.29%) moderate NPDR, 66 (18.86%) severe NPDR, 74 (21.14%) proliferative diabetic retinopathy (PDR). Females, longer duration of diabetes, family history of diabetes and hypertension had a statistically significant increase in risk of any DR. CONCLUSION: The study is expected to provide an estimate of the overall prevalence of DR and the prevalence with different duration of diabetes and also a better understanding of the risk factors associated with DR.

摘要：针对受限的非仿射非线性系统,结合自抗扰思想提出了非仿射系统的扩张状态观测器(ESO)设计,从而将辅助系统设计技巧拓展到了非仿射系统,然后利用反演和指令滤波器设计了自适应控制器,为受限的不确定非仿射系统提供了新的设计思路.为了补偿受限带来的影响,引入了辅助系统,它的状态被用来补偿跟踪误差.指令滤波器用来处理虚拟控制受限问题,同时获得虚拟控制导数的估计,避免了backstepping中对它的繁琐计算,扩张状态观测器被用来估计系统的未知非仿射非线性项和外部干扰.利用输入状态稳定性(ISS)分析了闭环系统的全局一致有界稳定性.最后仿真结果验证了该设计方案的有效性.

摘要：提出了基于多项式拟合Wassermann-Wolf曲面设计共形光学系统的设计方法,并给出了完整的设计结果.共形光学系统要求导弹整流罩具有流线型几何外观以减少空气阻力,其次考虑导引头的光学系统设计,所以共形整流罩引入的像差通常高达几十甚至一百个波长量级,为导引头光学系统的设计带来了极大的困难.通过多项式拟合Wassermann-Wolf曲面提供共形光学系统初始结构,建立Zernike多项式特殊优化函数取代传统的光学系统评价函数,克服了用传统光学设计方法设计共形光学系统时系统评价函数收敛缓慢的问题,实现了共形光学系统的设计.设计结果表明,系统的调制传递函数在整个目标视场范围内达到了衍射极限.

摘要：为满足临近空间拦截高速大机动目标的实际需求,研究了考虑直接力/气动力复合控制动态特性的前向拦截制导律设计方法。在考虑连续气动力和离散直接力特点的基础上,给出了一种在气动舵控制基础上设计连续直接力、然后通过冲量等效法进行离散化的直接力设计方法,避免了复杂的控制分配问题。根据二维前向拦截导引运动学模型和拦截导弹动力学模型,利用时间尺度分离,将拦截导弹和目标的质点运动学与加速度慢变子系统构成的动态系统,看成慢变子系统,设计了俯仰角速度指令;将俯仰角速度动态子系统看成快变子系统,通过对俯仰角速度指令的跟踪控制设计得到考虑复合控制系统动态特性的前向拦截导引律。仿真结果校验了本文方法的正确性和有效性。

摘要：A novel tobacco-curing system with a solar-assisted heat pump was *** proposed system has various advantages,such as reducing energy consumption and pollutant emissions and enhancing the stability of system *** thermal characteristics of the system under different climate conditions were analyzed,and the economic and environmental benefits of different tobacco-curing technologies were *** indicated that the dehydration rate,the mass flux of exhaust air,and the heat load of the novel tobacco-curing system in different months had similar changes with the baking time,and all reached the maximum in the later stage of color *** with the power saving rate of a heat pump tobacco-curing system,that of the novel system reached 25.9%-35.1%.The dry leaf curing cost of the novel system was only 0.86-1.06 yuan/kg,which can reduce the cost by more than 60%compared with traditional coal-burning tobacco-curing systems in *** with other parts of the tobacco leaf,the top leaf had the lowest dry leaf curing cost due to its highest mass of dry *** payback period and the annual CO_(2) emission reduction of the novel system were 3.0-3.7 a and 15586 kg,respectively.

摘要：基于耦合波理论和相位匹配技术,对准光辐射器的传统设计方法进行了改进,使其适用于低阶模式的设计.通过调节耦合时模式间的相位,在切口处实现了具有高斯场分布的理想模式组合.利用这一方法,优化设计了一个94 GHz,TE5,3回旋管准光辐射器.数值模拟结果表明,设计的辐射器在切口处形成了一个良好的束斑,边馈电平达到-30 dB,口径场高斯含量高于98%.

摘要：轨道交通车站建筑换乘方案设计与周边城市景观的协调,对交通疏解、管线改迁的影响以及对居民既有生活的影响等,越来越成为项目建设的重点。通过对常用地铁车站换乘形式的研究,对建设时序相差较远的换乘站推荐采用L形通道或T形连接站厅换乘形式。以长沙轨道交通3号线一期工程洋湖垸站为例,对车站方案换乘形式的选择及相应的设计思路进行分析介绍。