基于CI接口的机卡分离条件接收系统设计与实现

通过比较实现CA系统的3个技术方案，引入DVB—CI公共接口概念并给出了CA系统中CI接口设计的框图，对公共接口协议作了简述，在此基础上完成CI接口的硬件设计和软件开发实现，简要介绍了对公共接口的扩展应用。     

开态热载流子应力下的n-MOSFETs的氧化层厚度效应

在最大衬底电流条件下(Vg=Vd/2),研究了不同氧化层厚度的表面沟道n-MOSFETs在热载流子应力下的退化.结果表明, Hu的寿命预测模型的两个关键参数m与n氧化层厚度有着密切关系.此外,和有着线性关系,尽管不同的氧化层厚度会引起不同的模型参数,但是如果对于不同厚度的氧化层,采用不同的m与n,Hu的模型仍然成立.在这个结果的基础上,Hu的寿命预测模型能用于更薄的氧化层.     

Ricean信道下Turbo码性能研究

针对Ricean衰落信道,在信道估计误差给定的情况下,提出一种新的Turbo码译码度量,推导出信道置信因子Lc新的表达形式。仿真结果表明,与采用传统近似译码度量相比,采用新的译码度量可以提高译码性能,信噪比改善0.1～0.6dB。而且在大主径衰落因子和小信道估计误差的情况下,译码性能优越,接近AWGN信道下Turbo码性能。     

Nano‐hydroxyapatite/polyamide66 composite tissue‐engineering scaffolds with anisotropy in morphology and mechanical behaviors

Based on a biomimetic conception, nano‐hydroxyapatite (n‐HA)/polyamide66 (PA66) composite scaffolds were prepared with anisotropic properties both in morphology and mechanical behavior. A novel improved thermally induced phase separation (TIPS) technique was developed to generate orientation‐structured scaffolds for tissue engineering. The physiochemical, morphological, and mechanical properties of the resultant scaffolds were evaluated. According to the results, the improved TIPS method exhibited good processability and reproducibility and enabled the composite scaffolds to have a high content of inorganic fillers. The morphological study proved that the n‐HA/PA66 scaffolds exhibited unidirectional microtubular architecture with high porosity (ca. 80–85%) and an optimal pore size ranging from 200 to 500 μm. Besides, the effect of n‐HA content on the morphology of the scaffolds was studied, and the results indicated that the obtained scaffolds presented an improvement in anisotropic morphology with increase of n‐HA content. The anisotropy was also evaluated in the mechanical properties of the scaffolds, that is, the longitudinal compressive strength and modulus were ～1.5 times of the transverse ones. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 658–669, 2009     

A converse to the Eidelheit theorem in real Hilbert spaces

We establish the following converse to the Eidelheit theorem: an unbounded closed and convex set of a real Hilbert space may be separated by a closed hyperplane from every other disjoint closed and convex set, if and only if it has a finite codimension and a non-empty interior with respect to its affine hull.     

Reliability of commercial triple junction concentrator solar cells under real climatic conditions and its influence on electricity cost

This paper proposes a methodology for assessing the concentrator solar cell reliability in a real application for a given location provided the results from accelerated life tests. We have applied this methodology for the evaluation of warranty times of commercial triple junction solar cells operating inside real concentrator modules in Golden (Colorado, USA), Madrid (Spain) and Tucson (Arizona, USA) for the period 2012–2015. Warranty times in Golden and Madrid, namely, 68 and 31 years, respectively, for the analysed period, indicate the robustness of commercial triple junction solar cells. Nevertheless, the warranty time of 15 years for Tucson suggests the need of improvement in the heat extraction of the solar cell within the concentrator module. Therefore, the influence of the location on the reliability of concentrator solar cells is huge, and it has no sense to supply general reliability values for a given concentrator product. The influence of these warranty times for the three locations on the levelised cost of electricity has been analysed. Cost of €c10–12/kWh can be achieved nowadays, while after 1 GW_p cumulative installed power, a dramatic reduction to levels of €c2–3/kWh is achievable. Copyright © 2017 John Wiley & Sons, Ltd.     

Critical Internuclear Separation of H+2 in Strong Light Field of Ti:s Laser

Image method was employed to study the ionization and dissociation behaviors of molecular hydrogen ions in the presence of strong Ti:s laser light. Besides the bond-softening and above-threshold dissociation phenomena, we found that the critical internuclear separation in Coulomb explosion process was dependent upon light intensity. The experimental and theoretical trends of this dependence were shown to be in a fairly good agreement. The light intensity range used was 1014～1016 W/cm2.     

设计印制线路板应注意问题及解决方法

分析在印制线路板设计各个阶段中应注意的细节和正确的设计步骤，给 出了可能遇到的布线问题，噪声种类及其解决方法。     

Asymptotics for solutions of a defective renewal equation with applications

In this paper, we derive non-exponential asymptotic forms for solutions of defective renewal equations. These include as special cases asymptotics for compound geometric distribution and the convolution of a compound geometric distribution with a distribution function. As applications of these results, we study the Gerber-Shiu discounted penalty function in the classical risk model and the reliability of a two-unit cold standby system in reliability theory.      

热致相分离法制备食道组织工程用支架的研究

合适的支架是进行组织工程研究必需的条件之一．运用自制的具有较好弹性的无规聚合物聚（L-乳酸-co-己内酯，PLLC），并采用热致相分离法（TIPS）制备了具有不对称孔径的食道组织工程用三维支架．经过对不同成孔条件（包括粗化温度、粗化时间以及聚合物溶液浓度等）的比较和研究，使此支架上表面具有孔径〈10μm，而本体具有50～100μm，甚至〉100gm的不对称多孔支架．并模拟正常食道粘膜层构造，将提取自猪食道的原代上皮细胞和成纤维细胞分别种植于此支架的二面，经HE常规染色，发现在体外培养时间（14d）内，在支架上表面已形成一连续层的上皮细胞层，某些部位甚至多于一层，这与正常食道的上皮细胞层相似．对于成纤维细胞而言，在与上皮细胞层同一视野内所见成纤维细胞较少，因为如果细胞生长在支架内部就很难用常规方法观察得到．但从这些结果可以看到用PLLC制备的多孔支架对细胞没有毒性，且具有一定的支持细胞生长的作用．