采用自相似分析进行视频中的背景识别

当今的视频监控系统已经越来越智能化,从中涌现的各种最新技术研究都预示着它的广阔前景.这些新技术中,视频场景的背景识别技术拥有着相当可观的实际应用价值.本文提出了一种对视频序列进行自相似分析,从而进行背景识别的方法.该方法比起传统的使用帧间柱状图差分的方法,在实时性和直观性上都做得非常好.     

Color image retrieval technique based on color features and image bitmap

The field of color image retrieval has been an important research area for several decades. For the purpose of effectively retrieving more similar images from the digital image databases, this paper uses the color distributions, the mean value and the standard deviation, to represent the global characteristics of the image. Moreover, the image bitmap is used to represent the local characteristics of the image for increasing the accuracy of the retrieval system. As the experimental results indicated, the proposed technique indeed outperforms other schemes in terms of retrieval accuracy and category retrieval ability. Furthermore, the total memory space for saving the image features of the proposed method is less than Chan and Liu’s method.     

国防科研项目评审模型研究及其DSS设计

本文建立了国防科研项目评审的指标体系，并对项目管理中的评审模型进行了研究。据此，设计开发了国防科研项目实施计划管理的ＤＳＳ，给出ＤＳＳ的详细结构及其特点。     

解读远程教育哲学理论中对学习支持服务的界定

文章通过对远程教育的哲学理论分析,结合已有学习支持服务的界定,归纳影响界定的要素,根据我国的现状,提出规划建设“本土化”学习支持服务体系的建议,为我国远程教育学习支持服务体系规划、建设提供借鉴。     

元诗黍离意象的时代性

元王朝在特殊的历史背景下完成了全国的统一 ,也为元诗的创作构造了特殊的历史文化背景。所以 ,元诗中的黍离意象 ,便突破了原有的内涵和情感界定 ,形成了独自的时代风貌 ,从而展示了这一意象更深广的蕴涵。     

船山诗学话语中的“意境”论

在船山诗学研究中,“意境”论没有得到足够的重视,往往只注重对“意境”情景交融特征的观照。事实上,王夫之的诗学思想,以“情景相生,互藏其宅”为基础和核心,以“超以象外”为审美效果。他着意推举“意”和“势”两个中心范畴。“势”是“超以象外”生成的动力。     

基于Lansat7 ETM 的从化市遥感影像信息提取研究

随着计算机软件技术的飞速发展,遥感数据处理软件越来越受到人们的关注,遥感影像数据处理的好坏直接影响到信息提取的效果。以广东省从化市Landset7 ETM 遥感影像为研究对象,借助ENVI软件着重阐述了图像处理的一些理论与具体的操作方法,并对图像分类的流程做了详细的探讨。     

Librarians as Advocates of Social Media for Researchers: A Social Media Project Initiated by Linköping University Library,Sweden

ABSTRACT

Librarians at Linköping University help researchers keep abreast of developments in their fields and to increase the visibility of their work. Strategic, professional use of social media ought to be an essential part of a researcher's communication strategy. This article investigates the level of awareness of the professional use of social media among LiU researchers. The investigation showed that use of social media was not significant; however, a small number saw potential. The purpose of this article is threefold. The first purpose was to evaluate the potential of using social media as a tool for communicating research outside LiU. Second, the article presents a study in which views of LiU researchers on social media were ascertained via seminar discussions, informal feedback, and interviews. The study has a case study approach involving eight researchers. Third, the article covers how LiU Library created a web-based information package to support researchers in social media use.     

Patterns of Nonverbal Adaptation in Supportive Interactions

This study seeks initial evidence for the patterns of nonverbal adaptation predictive of emotional improvement after a troubles talk conversation. A total of 128 dyads composed of two unacquainted individuals engaged in a 5-minute conversation about a stressful event, and the nonverbal behaviors of both the supportive listener and discloser were coded for immediacy. We detected a general pattern of matching between interlocutors, which was positively associated with disclosers’ reported emotional improvement above and beyond listener immediacy. Importantly, we found primary support for a discloser-matching model whereby emotional improvement is a function of disclosers matching highly immediate listeners but no support for a listener-matching model whereby emotional improvement is a function of listeners matching disclosers to signal empathy.     

Decryption of pure-position permutation algorithms

Pure position permutation image encryption algorithms,commonly used as image encryption investigated in this work are unfortunately frail under known-text attack.In view of the weakness of pure position permutation algorithm,we put forward an effective decryption algorithm for all pure-position permutation algorithms.First,a summary of the pure position permutation image encryption algorithms is given by introducing the concept of ergodic matrices.Then,by using probability theory and algebraic principles,the decryption probability of pure-position permutation algorithms is verified theoretically; and then,by defining the operation system of fuzzy ergodic matrices,we improve a specific decryption algorithm.Finally,some simulation results are shown.