蒙特卡罗模拟方法对EAS阵列性能分析与优化设计的研究

建立了快速计算机阵列性能分析程序，由此阵列性能进行快速分析，对种种阵列设计方案进行比较搜寻，本文介绍其基本定理，方法、程序设计及部分计算结果。     

云南陆良盆地的形成与演化

陆良盆地是云南省第三系沉积盆地的典型代表。盆地中识别出四个不整合面，即Ｔｇ、Ｔ６、Ｔ３和Ｔ０。其拉张史可分为两大阶段：（１）Ｔｇ→Ｔ５，拉张强度渐增期；（２）Ｔ５→现今，拉张强度渐弱期。与拉张史相对应，陆良盆地的沉降史可分为两个阶段：（１）Ｎ２ｃ为快速沉降阶段；（２）Ｑ为沉降缓慢阶段。据此，陆良盆地的形成演化阶段为：（１）盆地初始形成期（Ｔｇ—Ｔ６）；（２）盆地扩张发育期（Ｔ６—Ｔ３）；（３）盆地发展稳定期（Ｔ３—Ｔ０）；（４）盆地萎缩充填期（Ｔ０—现今）。     

延长涡轮增压器的使用寿命

增压器是增压柴油发动机中的重要部件，由于部分驾驶员缺乏对增压器结构、使用及维护知识的了解，造成增压器的早期损坏。本文就延长增压器的使用寿命，从增压器安装、使用及维护的角度提出了一些注意事项，并通过实践证明是行之有效的。     

Efficient polymer light-emitting diodes with violet blue emission based on blends of PSiF6-PPP and PSiFC6C6

Efficient polymer light-emitting diodes (PLEDs) with violet blue emission were fabricated using blends of copolymers of paraphenylene-co-silafluorene (PSiF6-PPP) and polymer of poly (9,9'-alkyl-3,6-silafluorene) (PSiFC6C6). The performances of the devices are sensitive to the blend ratio. When the mass ratio of PSiF6-PPP to PSiFC6C6 is 1 : 3, the highest external quantum efficiency is 1.96% at luminance of 105 cd.m2, its electroluminescent (EL) spectrum peaks at 398 nm and full width at half maximum is 67 nm. The improvements of the device performances were due to the energy transfer from PSiFC6C6 to PSiF6-PPP and the balanced injection of electrons and holes.     

基于信号解释Petri网的可重构逻辑控制器分析与设计

为适应可重构制造系统这一新生产模式的顺序控制 ,本文提出了基于信号解释Petri网的可重构逻辑控制器分析和设计的方法 .该方法利用层次化、模块化和接口技术将控制器规划为开放的体系结构 .确定了可达图法和化简技术结合的SIPN模型形式分析方法及步骤 ,采用透明度指标对模型进行评价 ,并给出控制器重构能力分析原则 .接着将该理论及方法用于一可重构装配生产线可重构逻辑控制器的建模和分析案例中 .分析结果表明设计的可重构逻辑控制器形式正确、有效 ,具有可重构能力 .最后提出逻辑控制器建模、分析、仿真、代码生成和逻辑控制实施的软件平台 ,该软件采用CORBA组件模型的软组件技术开发 .     

冰醋酸对于测定植物材料中超氧阴离子含量的灵敏度的影响

利用羟胺氧化法测定超氧阴离子 ,在偶氮反应试剂中加入冰醋酸能够提高检测灵敏度 5 0 % .在植物材料的O2 - · 的提取过程中同时加入EDTA和羟胺 ,抑制SOD活性并及时“固定”O2 - · ,这样所测得的O2 - · 含量更能反映体内的实际情况 .同时发现提取上清液照光不产生O2 - · ,间接验证了O2 - · 来源于光合膜系统 .     

Secure Transmission Scheme for Parallel Relay Channels Based on Polar Coding

This paper considers the use of polar codes to enable secure transmission over parallel relay channels.By exploiting the properties of polar codes over parallel channels, a polar encoding algorithm is designed based on Channel State Information(CSI) between the legitimate transmitter(Alice) and the legitimate receiver(Bob).Different from existing secure transmission schemes, the proposed scheme does not require CSI between Alice and the eavesdropper(Eve). The proposed scheme is proven to be reliable and shown to be capable of transmitting information securely under Amplify-and-Forward(AF) relay protocol, thereby providing security against passive and active attackers.     

耗散发展方程吸引子的分形结构

证明了一类耗散发展方程的吸引子具有分形结构，并且给出了这一结构，进一步发现吸引子的指数逼近型紧分形局部化序列，这一结果精细了一类发展方程吸引子结构     

A thermoacoustically driven cooler capable of reaching temperature below 77 K with no moving part

The pulse tube cooler has no cryogenic displacer and has attracted lots of attention in the field of cryocooler research. On the other hand, the thermoacoustic engine can generate self-oscillation and output work .without moving components. Combining both technologies leads to a cryogenic cooler system with no moving components at all,     

A hybrid genetic algorithm for reduct of attributes in decision system based on rough set theory

Knowledge reduction is an important issue when dealing with huge amounts of data. And it has been proved that computing the minimal reduct of decision system is NP-complete. By introducing heuristic information into genetic algorithm, we proposed a heuristic genetic algorithm. In the genetic algorithm, we constructed a new operator to maintaining the classification ability. The experiment shows that our algorithm is efficient and effective for minimal reduct, even for the special example that the simple heuristic algorithm can't get the right result.