语用迁移的模因论阐释

从模因论的角度,分析语用迁移的成因。探讨二语习得者在学习目的语的过程中,二语模因库中的语言模因是如何合作或竞争,从而促进或阻碍学习者习得目的语。     

On the effectiveness of cognitive feedback from an interface agent

The objective of this study was to determine the impact of task information (TI) provided by an interface agent during the idea evaluation and integration step of the problem formulation stage of the problem solving process. The effectiveness assessment was based on solving diagnostic decision problems in the domain of complex industrial machinery. Ten domain experts participated in this study. Decision support was provided by a case-based reasoning system. Findings suggest that TI provided by the interface agent had no effect on the decision maker's performance, nor on the associated cognitive effort. However, a verbal protocol analysis revealed that the ten subjects used the interface agent to verify their decision processes. The results and their implications are discussed with respect to current findings in the area of decision support systems.     

Double shrinkage estimators for large sparse covariance matrices

Covariance matrices play an important role in many multivariate techniques and hence a good covariance estimation is crucial in this kind of analysis. In many applications a sparse covariance matrix is expected due to the nature of the data or for simple interpretation. Hard thresholding, soft thresholding, and generalized thresholding were therefore developed to this end. However, these estimators do not always yield well-conditioned covariance estimates. To have sparse and well-conditioned estimates, we propose doubly shrinkage estimators: shrinking small covariances towards zero and then shrinking covariance matrix towards a diagonal matrix. Additionally, a richness index is defined to evaluate how rich a covariance matrix is. According to our simulations, the richness index serves as a good indicator to choose relevant covariance estimator.     

校园媒体对大学校园文化建设的功能探析

校园媒体对大学校园文化建设的主要功能是舆论引导功能和文化上的同构建设功能。深受世界范围内媒体环境变革的影响,校园媒体对校园文化建设的功能面临新挑战。为应对这一挑战,校园媒体在舆论引导功能上要加强舆论导向与传播效果的统一、党性原则与受众意识的统一;在媒介文化建设上要深入研究“三贴近”方法,办有亲和力的校园权威媒体。本文同时还探讨了新形势下校园媒体新作用的正负效应及相应对策。     

基于数据挖掘的Internet远程教学研究

研究了基于数据挖掘的Internet远程教学模型和方法,提出利用数据挖掘解决基于Internet的远程教学还存在的诸如怎样获得准确的反馈信息、怎样实现个性化学习、怎样实现自动答疑等问题的思想。研究表明,数据挖掘可以解决Internet远程教学中现有的一些问题,促进Internet远程教学的发展。     

激发大学生学习英语动机的策略

本文从创建师生关系,培养学习兴趣,确立教学目标和学习目标三个方面论述英语教师在教学过程中如何激发大学生学习英语的动机,使学生主动参与到学习活动之中,从而有效提高教学效果。     

重大主题深度开掘--《宁波日报》做强正面典型报道的探索与思考

结合新闻实践,文章认为:党报如要发挥其权威性和指导性的优势,必须要在处理好重大典型与平凡人物、重大活动与精细策划、突发事件与正面报道的三个关系和环节上,选准切入点,搞好重大主题宣传,不断开掘报道的深度,做大做强正面报道和典型报道。     

实证会计研究导论

实证会计研究是会计理论研究中的一种新兴的研究方法 ,它代表了当今世界会计理论的研究方向 ,在西方国家已经成为会计研究的主流 ,我国会计理论界也开展了对它的研究。本文着重就实证会计研究的概念、程序、特点、意义以及在我国的前景展望进行了探讨 ,以期引起对它的进一步关注。     

时滞双线性系统状态反馈镇定控制器的设计

许多工程系统中含有时滞,时滞是系统不稳定和破坏系统性能的一个主要原因。因此如何镇定时滞系统具有重要的工程意义。本文讨论一类多输入多输出无阻尼时滞双线性系统的镇定问题。借助李亚普诺夫泛函法得到无记忆静态状态镇定控制器的设计。     

含导数项的p-Laplacian算子多点边值问题三个正解的存在性

利用Leggett-Williams不动点定理的一个扩展定理,研究了非线性项含导数项的pLapla-cian算子多点边值问题,得到了三个正解存在的充分条件.