嵌入式微处理器保护方式下高特权级系统调用的研究

设计拥有我国自主版权的微处理器有着重大意义。高特权级系统调用算法及高特权级系统调用测试单元ＰＣＵ是拥有保护机制微处理器的重要组成部分,文中探讨了保护方式下高特权级系统调用的数据结构、定义,给出了高特权级系统调用算法,提出了高特权级系统调用测试单元ＰＣＵ的细胞群结构,并指出细胞是高特权级系统调用测试单元ＰＣＵ的基本测试单位。细胞群结构概念的提出解决了微处理器保护测试单元结构设计的难题,使设计拥有自主     

基于复杂可编程逻辑器件的DRAM控制器的设计与实现

本文介绍了一种用复杂可编程逻辑器件（CPLD）设计DRAM控制器的设计方法,并采用VHDL语言编程实现。     

CVD淀积SiC薄膜SiH4,CH4的分解反应的计算机模拟研究

采用化学气相淀积淀积ＳｉＣ薄膜中ＳｉＨ４、ＣＨ４的分解产物种属进行数学建模,并结合相关热力学数据进行计算机模拟,得出ＳｉＨ４分解产物中以ＳｉＨ２为最多,ＣＨ４以ＣＨ２为最多,表明它们在淀积薄膜中是主要因素。     

NetBeans平台软件开发单元测试技术的研究

软件开发和软件测试就像两兄弟,他们密不可分、协同合作,目标只有一个,那就是成功开发出高质量的软件。开发与测试之间的关系如此密切,让我们很难彻底的将两者严格的划分开来。单元测试做为测试的一部分,一般都由编码人员来承担,对于模块级一直都是谁编码、谁测试。因此测试不仅仅是测试人员的事情,作为编码人员也需要懂得测试的基本方法,以通过单元测试提交高质量的程序模块。     

Diffractive backlight grating array for mobile displays

Abstract— The display backlight unit (BLU) is the most power‐consuming subunit in mobile liquid‐crystal displays. The state‐of‐the‐art BLUs utilize scattering, refractive, and reflective microstructures to generate a uniform distribution of white light through the display. More effective means of transmitting light through the display color filters could be obtained by using diffraction, but previously proposed diffractive backlights do not fully utilize all the possibilities to design gratings effectively for optimal color separation and outcoupling. This paper presents a new pixelated diffractive backlight grating array as an approach for overcoming these obstacles in BLU design. A model array was fabricated to couple out red, green, and blue primary colors from the respective subpixel locations. The results show that it is possible to manufacture such an array and that the light couples out as intended, giving a starting point to design mobile‐display modules with low light‐transmission losses.     

改进的选择神经网络结构的方法

有关人工神经网络作为在线状态估计器组成基于神经网络的传感器故障检测的研究已有报导。但是这些文章中没有提到如何选择神经网络的结构。神经网络的输入延迟数和隐基单元数影响其对系统的拟合精度,从而影响故障检测的灵敏度。研究了一些现有的选择神经网络结构的方法,以系统化的交叉证实法为基础,经过改进,提出了针对作为在线状态估计器的神经网络选择输入延迟数和隐层单元数的系统化的方法,并用某船在试验场中航行时平台罗经输出的一段数据作了仿真,结果证明该法可行,具有工程实用意义。     

车辆起步车速测量技术的研究

介绍了装有自动机械式变速箱 (automaticmechanicaltransmission ,AMT)的车辆起步车速的测量技术。起步车速的精确测量对离合器控制规律 ,尤其是离合器半接合点的确定至关重要。由于选用了霍尔式零速传感器和单片机MC6 8376的TPU模块以及相应的检测软件 ,使得车辆起步车速的测量更加精确 ,从而为离合器的优化控制提供了可靠的依据     

纳米材料SnO_2的室温固相合成及其气敏特性

以无机物SnCl4 ·5H2 O、Na2 CO3 (摩尔比 1:2 )为原料 ,室温下研磨 ,使其发生固相化学反应 ,制得SnO2 ,采用X -射线衍射技术 (XRD)和透射电子显微镜 (TEM)等测试手段对材料的物相和微观结构进行了分析 ,结果表明 ,所得产物为理论产物 ,且平均粒径约为 2 5nm ;采用HWC - 30A汉威气敏元件测试系统对材料的气敏性能进行了测试 ,结果表明 ,该材料制成的烧结型元件对可燃性气体有很高的灵敏度 ,通过控制工作温度可提高元件的选择性     

The development of multiple reaction monitoring assays for liver-derived plasma proteins

There is wide interpatient variability in toxicity to chemotherapeutic drugs and a lack of routine clinical tests for prospectively identifying patients at risk of developing toxicity from chemotherapy. An empirically driven MS strategy has been developed to monitor liver-derived plasma proteins as potential biomarkers of early toxicity. Multiple reaction monitoring (MRM) has been used to assess 46 candidate peptides from 18 liver-derived proteins. Following an iterative process of assay design, optimisation and assessment we selected 29 MRM assays (median CV 4.6%, range 1.2-11.6%) and monitored changes in levels of plasma proteins from a small number of colorectal cancer (CRC) patients undergoing chemotherapy. We demonstrated MRM assay robustness, and show that patients undergo minor elevation in plasma proteins when profiled on Day 3 of the chemotherapeutic regime. The MRM assays were in general agreement with 2-D DIGE-based quantitation from the same patient samples. The data supports the application of MRM-based methods as facile, highly reproducible, medium-throughput techniques that warrant expanded investigation for clinical utility in identifying patients at risk of developing chemotoxicity.     

Gas-phase ion chemistry in organometallic systems

This review essentially deals with positive ion/molecule reactions occurring in gas-phase organometallic systems, and encompasses a period of time of approximately 7 years, going from 1997 to early 2004. Following the example of the excellent review by Eller & Schwarz (1991; Chem Rev 91:1121-1177), in the first part, results of reaction of naked ions are presented by grouping them according to the neutral substrate, while in the second part, ligated ions are grouped according to the different ligands. Whenever possible, comparison among similar studies is attempted, and general trends of reactivities are evidenced.