CIF到PG3600格式转换的算法研究

提出了微光刻图形CIF数据格式到PG3600数据格式转换软件新的图形切割算法,该算法将L-EDIT输出的CIF格式中的四种图形当作任意多边形处理,然后把多边形切割成矩形。与其他算法相比较,该算法简单、切割理想、切割后的矩形数据量比其他算法少很多。并以此算法为基础,编制能够运行于Windows操作系统且又能够挂靠在L-EDIT上的数据格式转换软件。     

远程监测无线通信系统设计

分析了远程监测的无线通信系统设计条件，采用了OFDM的通信方式和网状网络拓扑结构，设计了网络中各级节点的协调机制、传输信道的决策机制和数据传输的帧格式，并对本系统进行性能评价。设计的通信系统可以实现数据中心与监测机器人之间远距离控制和信息传输，满足对特殊环境的实时监测。整个系统有足够的系统冗余，每个节点相对独立，单个节点的损坏对系统通信没有影响，且系统传输准确率远高于点对点传输。     

一种增强服务器高可用性的设计方法

首先简要介绍了HA(High Availability)的内容和工作原理,然后详细分析了HA的心跳数据格式和心跳流程,给出了一种增强服务器高可用性的设计方法,并在Unix操作系统Solaris上采用C 完成了HA模块开发.     

基于VB.NET实时图像处理的实现方法

调用VFW组件实现视频图像的采集和保存.通过.Net Framework提供的文件和数据流操作函数对采集到的图像进行空间域滤波.为了能正确读取数据,对BMP图像的格式进行了介绍.     

战斗机多功能显示器显示菜单标识和编排格式对飞行员认知的影响

目的研究战斗机多功能显示器(Multifunctional Display,MFD)显示菜单中(英)文标识和全英文标识及其不同编排格式对飞行员认知的影响,为国产飞机人机界面设计提供重要参考。方法以MFD菜单不同标识和编排格式的8幅显示画面为材料,以151名战斗机飞行员为对象,考察其对各显示画面信息认知的正确率和认知反应时,并要求他们在实验结束后用"优、良、中、差"对测试画面做出评价。结果 "中(英)文标识"和"全英文标识"菜单认知的总体正确率分别为93.0%和89.9%,差异显著(P0.05)。"中(英)文标识"菜单的正确认知平均反应时低于"全英文标识"菜单的正确认知平均反应时,差异非常显著(P0.001)。结论根据实验研究结果和飞行员评价提出MFD显示菜单标识及编排格式的如下优化方案:(1)优先采用以中文为主、以英文为辅的"中(英)文标识"菜单,英文标识数量不宜太多;(2)在以中文标识为主的菜单格式中,可首先把重要菜单项更换成英文标识(或其它不同标识),以改善认知工效;(3)采用中英文标识菜单项混合编排格式,尽可能在比较重要的中文菜单项前编排一个英文菜单项,或在英文菜单项前编排一个中文菜单项。     

On the communication of scientific data: The Full-Metadata Format

In this paper, we introduce a scientific format for text-based data files, which facilitates storing and communicating tabular data sets. The so-called Full-Metadata Format builds on the widely used INI-standard and is based on four principles: readable self-documentation, flexible structure, fail-safe compatibility, and searchability. As a consequence, all metadata required to interpret the tabular data are stored in the same file, allowing for the automated generation of publication-ready tables and graphs and the semantic searchability of data file collections. The Full-Metadata Format is introduced on the basis of three comprehensive examples. The complete format and syntax are given in the appendix.     

NIM/GPIB及其实现

本文介绍NIM/GPIB系统的基本概念、规定及其实现方法,并举例说明调节甄别器阈值的方案。     

Does mentioning “some people” and “other people” in a survey question increase the accuracy of adolescents' self-reports?

A great deal of developmental research has relied on self-reports solicited using the “some/other” question format (“Some students think that… but other students think that…”). This article reports tests of the assumptions underlying its use: that it conveys to adolescents that socially undesirable attitudes, beliefs, or behaviors are not uncommon and legitimizes reporting them, yielding more valid self-reports than would be obtained by “direct” questions, which do not mention what other people think or do. A meta-analysis of 11 experiments embedded in four surveys of diverse samples of adolescents did not support the assumption that the some/other form increases validity. Although the some/other form led adolescents to think that undesirable attitudes, beliefs, or behaviors were more common and resulted in more reports of those attitudes and behaviors, answers to some/other questions were lower in criterion validity than were answers to direct questions. Because some/other questions take longer to ask and answer and require greater cognitive effort from participants (because they involve more words), and because they decrease measurement accuracy, the some/other question format seems best avoided. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

一种针对格式文件的符号执行优化方法

为了解决符号执行中路径爆炸、新路径发现率低等问题，提出了针对文件格式数据块约束的符号执行分析方法（FFCBSE，File Format Constraint Based Symbolic Execution）优化框架.文件格式信息的缺失会影响符号执行的效率以及测试用例生成，该方法通过分析程序代码自动分析程序读取的格式文件数据块之间的依赖关系并建立相关约束，随后使用这些约束引导符号执行更关注于核心功能代码区域.在KLEE中实现了上述优化框架，并对Tcpdump、Readelf、Elfdump、File、Zlib等7个常用文件处理程序做了检测.和KLEE以及DASE相比，FFCBSE发现了13个之前未知的缺陷，在指令覆盖率和分支覆盖率有10%~225%不同程度的提升.     

机器可读术语交换格式(MARTIF)———协商交换(ISO/FDIS12200:1998)(一)

MARTIF适用于机器可读术语数据的交换。ISO12200规定了以MARTIF格式交换术语数据时使用的置标标记、条目结构、字符编码、文件结构和文件类型定义。