An ERP study for the degrees of the difficulty in visual search

The present study mainly probed the relationships between ERP components and the degrees of difficulty in visual search. Three experimental and one controlled conditions were randomly selected. Results showed that the P1, N1, and P2 amplitudes and latencies had no significant differences among the three experimental and one controlled conditions, and the ERP waveforms of low perceptual load of visual search were different from that of high perceptual load. These results might indicate that the latencies and amplitudes of initial P1, N1 and P2 in high and low perceptual load conditions were almost the same. The ERP waveforms of parallel search were very different from that of serial search, and the ERP waveforms of serial search were very similar. The P3 amplitudes increased as the degrees of the difficulty in visual search decreased.     

论降低网页界面的视觉干扰

视觉干扰会影响用户时信息的正确判断，阻碍用户浏览网页体验度的提升，降低信息传达的效率减少网页界面视觉干扰应明确页面信息的主次关系．恰当地应用分类识别手法，合理地利用信息之间的视觉停顿并且弱化辅助元素的视觉强度。     

儿童对玩具中色彩的体验

本文结合儿童不同时期对玩具的实际色彩需求,探讨儿童对色彩的感情需求,分析色彩对儿童心理的作用,鼓励家长和儿童的互动和参与游戏,从而满足儿童的情感需求。     

多媒体课件在Visual Basic中的实现

在多媒体课件中动画，声音和视频的处理是课件制作中的主要技术环节，本文举例说明了在Visual Basic实现这些技术环节的方法，并给出了源代码。     

Error Resilient Video Communication Based on Picture Level Adaptive Frame/Field Coding

Packet loss protection method based on picture level adaptive frame /field coding （PAFF）was presented. Firstly,the end-to-end rate-distortion analysis for PAFF on the current frame was performed. Secondly,in order to evaluate the severity of error propagation in the following frames,the error propagation intensity and human visual quality sensitivity of different areas were taken into consideration. It was followed by the quantification of relative importance. Finally,the proper coding mode was chosen utilizing an unequal comparison procedure. The simulation results show that the proposed method can improve peak signal-to-noise ratio （PSNR） up to 0. 9 dB and 1. 6 dB comparing with the field only and the dispersed flexible macro-block ordering （FMO）only methods respectively.     

《Visual Foxpro》教学改革初探

本文结合教学实际谈了作者采用理论联系实际,推行"项目"式教学方法对改进高职高专数据库管理系统课程教学的一些探索.     

岭南传统观演空间的视觉分析

通过对以神庙剧场为代表的岭南传统观演空间的视分析（包括城市空间的视觉分析和观演空间的视线分析），揭示岭南传统观演空间形态的规律和生存的双重意义，从而为研究岭南传统观演空间开辟一个理性的分析方法，并对现代剧场和城市公共空间的设计提供参考．     

油画技法中的灰色表现

灰色对于油画具有十分重要的意义。古典罩染技法产生的“视觉灰色”可以作为研究对象，以其在油画发展过程中向直接灰色转变为研究主体，可以梳理灰颜色表现与油画发展的重要关系，透析古往今来艺术大师们对灰色的表现。梳理灰色的创作系统，引发关于灰色命题的思考。     

立井凿井设备选择布置专家系统的实现

立井凿井设备选择布置专家系统采用了分层次的数值与产生式知识表示，正向模糊推理的控制策略，有Ｖｂ和ＡｕｔｏＣＡＤ两种软件工具开发。系统的实现对井设计人员的工作有较大的帮助。     

市场模拟问题的描述模型

市场模拟是一种崭新的计算机辅助市场决策的现代化管理技术，具有多学科相结合的特点２，然而实际应用中远未达到目的，本文分析了存在的问题，建立市场模拟问题的描述模型。