基于语料库和网络的新词自动识别

汉语自动分词是进行中文信息处理的基础。目前，困扰汉语自动分词的一个主要难题就是新词自动识别，尤其是非专名新词的自动识别。同时，新词自动识别对于汉语词典的编纂也有着极为重要的意义。文中提出了一种新的新词自动识别的方法。这个方法用到了互信息和log-likelihood ratio两个参数的改进形式。主要分三个阶段完成：先从网络上下载丰富的语料，构建语料库；然后采用统计的方法进行多字词识别；最后与已有的词表进行对照，判定新词。     

多媒体网络教学系统的设计与实现

CAI技术是教育信息化的重要手段。本文介绍CAI的课件设计和多媒体网络教学系统的实现。     

数据的逻辑综合分析及决策算法

文章给出了逻辑综合分析的基本理论和决策算法。并利用逻辑综合中逻辑单元的随机覆盖问题产生的随机数据,对算法加以验证。实验结果表明决策算法的精确度可以达到97.2%。     

遗传程序设计(GP)的适应性函数设计

适应性函数是遗传算法和遗传程序设计得以实现的关键因素,是评价个体好坏的定量表述,决定着演化过程中群体选择复制及群体整体性的质量。该文叙述了适应性函数的设计方法,解释各设计方法的原因,并提出根据树型遗传算法的个体特点通过控制适应性函数大小对个体进行奖励惩罚。     

某型飞机襟翼自动检测系统的设计

某型现代战机襟翼伺服控制系统在维护保障上存在检测仪器功能单一、通用性差、检测效率低、可靠性不高等问题，因此研制了该型飞机襟翼自动检测系统。系统以嵌入式工控机为核心，将CPU板、A／I)板、D／A板、I／O板按层叠式结构组合在一起，利用Turboc C 2．0进行编程，运行在UCDOS7．0环境下。该自动检测仪具有测量精度、智能化及自动化程度高，可靠性及通用性好，体积小，重量轻，操作简便等优点。经使用，该设备覆盖了原有设备的全部功能，且技术先进，性能优越，极大提高了部队维修保障效率。     

SNMP与拒绝服务攻击

众所周知，SNMP(简单网络管理协议)已广泛用于网络设备的监督和管理。但是最近的研究表明，许多实现此协议的网络设备都可能不同程度的受到拒绝服务的攻击，本文分析了其中存在的一些弱点，并提出了预防的手段。     

光传送网的未来发展探讨

文章从网络结构与拓扑两个方面，重点对下一代光传送网进行了探讨，具体介绍了新兴的光传送网——自动交换光网络(ASON)结构及其关键协议，并从运营商和设备商两个不同角度，较为深入地探讨了现有网络向ASON过渡时所采用的策略。     

集成质量管理

本文首先介绍了计算机辅助质量管理技术，然后阐述了集成质量管理的集成空间、特点及其与ERP、PDM的关系，设计了集成质量管理系统，最后说明了该系统已经在企业当中获得成功应用．     

An experimental study on the role of 3D sound in augmented reality environment

Investigation of augmented reality (AR) environments has become a popular research topic for engineers, computer and cognitive scientists. Although application oriented studies focused on audio AR environments have been published, little work has been done to vigorously study and evaluate the important research questions of the effectiveness of three-dimensional (3D) sound in the AR context, and to what extent the addition of 3D sound would contribute to the AR experience.

Thus, we have developed two AR environments and performed vigorous experiments with human subjects to study the effects of 3D sound in the AR context. The study concerns two scenarios. In the first scenario, one participant must use vision only and vision with 3D sound to judge the relative depth of augmented virtual objects. In the second scenario, two participants must cooperate to perform a joint task in a game-based AR environment.

Hence, the goals of this study are (1) to access the impact of 3D sound on depth perception in a single-camera AR environment, (2) to study the impact of 3D sound on task performance and the feeling of ‘human presence and collaboration’, (3) to better understand the role of 3D sound in human–computer and human–human interactions, (4) to investigate if gender can affect the impact of 3D sound in AR environments. The outcomes of this research can have a useful impact on the development of audio AR systems, which provide more immersive, realistic and entertaining experiences by introducing 3D sound. Our results suggest that 3D sound in AR environment significantly improves the accuracy of depth judgment and improves task performance. Our results also suggest that 3D sound contributes significantly to the feeling of human presence and collaboration and helps the subjects to ‘identify spatial objects’.     

Fast Hybrid Approach for Texturing Point Models

We present three methods for texturing point models from sample textures. The first method, the point parameterization method, uses a fast distortion‐bounded parameterization algorithm to flatten the point model's surface into one or more 2D patches. The sample texture is mapped onto these patches and alpha blending is used to minimize the discontinuity in the gaps between the patches. The second method is based on neighborhood matching where a color is assigned to each point by searching the best match within an irregular neighborhood. The hybrid method combines the former two methods, capitalizing on the advantages of both. The point parameterization method is used first to color most of the points, and the point neighborhood‐matching method is then applied to the points belonging to the gaps between the parameterized patches to minimize the discontinuity. We opt for fast texture generation, while some discontinuities may appear in the gaps of anisotropic textures.