基于最速下降法的人工免疫算法

由于人工免疫算法受到收敛速度相对较慢,局部搜索能力较弱、求解全局最优解需要的群体规模相对较大等因素的影响,本文将最速下降法与人工免疫算法结合,提出了一种新的混合算法。数值实验结果表明,该算法能够找到更优的优化结果,并且在收敛速度上明显优于传统的人工免疫算法。     

浅析《呼啸山庄》会话中人称指示语的语用转移

人称指示语是语用学的传统研究课题,也是社会语言学的研究重点之一。在文学作品中,人称指示的使用也有着重要的文体学意义。在著名的文学作品《呼啸山庄》中,人物会话中包含着丰富的人称指示的表达形式,分别实现着不同的语用功能。如人称指示的转移,体现了语用距离的调整,对于展示人物关系、表达人物情绪、推动情节发展都有着重要的意义。     

关于远程教育大学英语教学的思考

远程教育作为实施终身学习、终身教育的主要手段将与校园教育长期并存。本文对远程教育大学英语教学模式与校园课堂教学模式进行了比较 ,认为两种教学模式在教学目的、教学理论和思想以及教学方法等方面基本相同 ,但由于教学条件的不同 ,两者又有其各自的特殊性。本文还对目前远程教育大学英语教学的状况及不足进行了较为详细的论述     

The Normative Protection of Women from Violence

The literature on the relationship between violence against women and a norm protecting women (NPW) is reviewed. I suggest that the effects of the NPW are suppressed because violence against women tends to occur in intimate relations and such disputes tend to be kept private. The offsetting effects of NPW and intimacy (or relational distance) are demonstrated in a study of 384 self-reported violent disputes. In support of an NPW effect, I find that disputes are more likely to be reported to the police if an attack on a woman is witnessed by third parties. This gender effect is offset by the fact that disputes between intimates tend to be concealed from the police and from witnesses.     

论电大办学系统整体功能的发挥

中国广播电视大学系统是目前我国实施现代远程教育的主力军。但是,随着我国高等教育结构性调整的日益深入,电大办学出现了许多新问题。电大教育系统只有顺应新形势的变化,不断进行观念创新、体制创新、机制创新、模式创新,才能在实施现代远程教育工程中发挥应有的骨干作用。     

远程开放教育中电大教师的角色定位

结合远程教育理念及电大开放教育特点,对电大开放教育教师的角色给予了重新定位,并对定位途径做了进行一步阐明。     

现代远程教育教学管理的重构

为适应杜会发展的需要,以现代信息技术为主要教育手段的现代远程教育迅速兴起,极大地冲击和改变了传统的教育行为和理念。在教学管理方面,需要我们不断探索和思考更加灵活、新颖的管理方式。本文就现代远程教育教学管理的管理模式、教师的知识和教材的重构作一些探讨。     

谈Internet与远程教育的课程开发的关系

介绍了 Internet与远程教育课程的关系 ,讨论了在计算机网络基础上页面的建立 ,包括网上教学系统和网上答疑。同时讨论了课件的开发和远程教育系统的应用 ,如教师备课和网上远程教育系统。     

Feature selection based on distance correlation: a filter algorithm

Feature selection (FS) is one of the most powerful techniques to cope with the curse of dimensionality. In the study, a new filter approach to feature selection based on distance correlation is presented (DCFS, for short), which keeps the model-free advantage without any pre-specified parameters. Our method consists of two steps: hard step (forward selection) and soft step (backward selection). In the hard step, two types of associations, between univariate feature and the classes and between group feature and the classes, are involved to pick out the most relevant features with respect to the target classes. Due to the strict screening condition in the first step, some of the useful features are likely removed. Therefore, in the soft step, a feature-relationship gain (like feature score) based on the distance correlation is introduced, which is concerned with five kinds of associations. We sort the feature gain values and implement the backward selection procedure until the errors stop declining. The simulation results show that our method becomes more competitive on several datasets compared with some of the representative feature selection methods based on several classification models.     

高校远程教学模式探析

信息技术的迅速发展,促进现代远程教育的教学手段和教学模式不断改革.由于我国许多地区的学校互联网接入条件比较差,造成使用费用较高,从而影响了互联网信息资源的有效传播,以低成本运行网络为前提讨论远程教学模式.