要公正评价李大钊的"联吴"活动     

卫保娣 《河南师范大学学报(哲学社会科学版)》2000,27(5):27-30

“联吴”是李大钊一生经历的重大政治事件之一。但由于种种原因,李大钊的"联吴"活动未得到公正的认识。事实上.李大钊未曾对吴佩孚抱不切实际的幻想:"联吴"和京汉铁路工人大罢工的失利之间没有必然的内在联系;蔡和森不仅没有笼统地反对"联吴".相反,却是较早对"联吴"做出客观评价的代表。"联吴"经历不意味着李大钊从五四时期的倒退,相反,对于北方革命的迅速展开和李大钊个人民主革命理论与实践的成熟有不可忽略的积极意义。  相似文献   

虚拟仪器及其在信号处理教学实验中的应用   总被引：1，自引：0，他引：1  

杨文龙 《实验室研究与探索》2007,(12)

简要地阐述虚拟仪器的基本构成及其当前流行的开发平台LabVIEW,特别是对虚拟仪器技术实现数字信号处理教学实验作了探讨。另外还介绍了利用计算机声卡来实现音频范围信号处理的一种廉价实验手段。  相似文献   

噪声掩蔽下小鼠下丘神经元的声强感受性分析(英文)     

皮建辉  唐佳  王丹 《怀化学院学报》2004,23(5):51-56

以弱强度白噪声为掩蔽声 ,探讨了噪声前掩蔽、后掩蔽和同步掩蔽对小鼠下丘神经元的声强感受性影响 结果表明 ,三种噪声掩蔽的MT值都明显高于纯音的MT (p <0 0 0 1) ,且前掩蔽的MT明显高于后掩蔽和同步掩蔽 (p <0 0 0 1) 噪声掩蔽对神经元阈上 10dB发放影响主要表现为易化效应 ,相反 ,对最大发放的影响主要表现为抑制效应 同时 ,噪声掩蔽可明显改变神经元潜伏期函数 ,但对发放率函数的影响不明显  相似文献   

Do dyslexic and other poor readers differ in reading-related cognitive skills?     

Nathlie A. Badian 《Reading and writing》1994,6(1):45-63

The rationale for the study was that if dyslexic and garden-variety poor readers differ in reading-related cognitive skills, there is justification for believing dyslexia to be a distinct entity. Subjects were 110 children aged 6 to 10 years, divided into groups of dyslexic poor readers varying in verbal IQ, garden-variety poor readers, and good readers. Findings suggest that there are valid grounds for believing that dyslexia is a separate entity from garden-variety poor reading, and that it is found among children at all verbal IQ levels. Poor phonological awareness and nonword reading, in relation to normal readers, were shared by dyslexic and garden-variety poor readers. Deficits unique to dyslexic poor readers were problems in both automatic visual recognition and phonological recoding of graphic stimuli. The study supports the phonological-core variable-difference model of Stanovich (1988) in that both dyslexic and garden-variety poor readers showed phonological processing deficits, but they were more extensive in dyslexics.  相似文献   

数码相机对三维空间尺度测距研究     

李燕马琨  吴加权 《蒙自师范高等专科学校学报》2005,3(6):33-36

提出了一种由单幅图像得到目标物体深度信息的方法。该方法通过计算机图像处理技术获取相关的图像信息,再结合光学成像原理将所用数码相机的实际物理焦距和图像中目标物体的大小均效到135相机的标准上,由计算机编程计算得出目标与测量系统之间的相对位置关系。介绍了测量原理,推导出了参数计算公式。实验表明,此系统测量精度满足工程测量要求。  相似文献   

语言单位和认知语境在信息处理中的作用   总被引：3，自引：0，他引：3  

韩霞 《周口师范学院学报》2003,20(3):98-100

在信息处理过程中，语言单位和认知语境决定了学习者能否正确地理解语篇中的语言意义，研究语言单位和认知语境在信息处理中的作用，会有助于英语教学，更有效地影响和转变中国学生习得英语的思维方式。作者对如何利用语言单位和认知语境来获取语言意义作了一定的探讨和研究。  相似文献   

微细轴类零件的线电极放电磨削加工工艺研究     

张立新  孙艳红 《职业技术教育》2006,27(35):108-109

针对微细轴的加工提出基于线切割机床的线电极放电磨削(WEDG)的加工方案.利用改造后的线电极放电磨削加工装置,分析WEDG技术的工作原理,并对其加工工艺进行了系统研究,找出各种工艺参数对线电极放电磨削加工表面粗糙度和加工效率的影响规律.  相似文献   

问题解决的历史渊源与发展态势   总被引：2，自引：0，他引：2  

项成芳  余嘉元 《赣南师范学院学报》2003,(1):26-29

问题解决是近年来逐步兴起的一个研究领域 ,并且日益显示出它的重要性。本文介绍了问题解决在心理学中的发展以及有关研究的现状等  相似文献   

电阻抗图象重建的新正则化方法     

侯卫东  莫玉龙 《上海大学学报(英文版)》2002,6(3):211-215

Image reconstruction in elecrical impedance tomography(EIT)is a highly ill-posed inverse problem,Regularization techniques must be used in order to solve the problem,In this paper,a new regularization method based on the spatial filtering theory is proposed.The new regularized reconstruction for EIT is independent of the estimation of impedance distribution,so it can be implemented more easily than the maxiumum a posteriori(MAP) method.The regularization level in our proposed method varies spatially so as to be suited to the correlation character of the object‘s impedance distribution.We implemented our regularization method with two dimensional computer simulations.The experimental results indicate that the quality of the reconstructed impedance images with the descibed regularization method based on spatial filtering theory is better than that with Tikhonov method.  相似文献   

Novel application of a predictive skill retention model to technical VLE content production skills among Higher Education teachers: a case study     

Marie Cahillane  Piers MacLean  Victoria Smy 《Interactive Learning Environments》2019,27(3):336-348

Periods of no practice in performing a technical procedure may impact on the retention of the procedural skills required to produce VLE content. This exploratory paper reports a case study into the application of a validated skills retention model, the User Decision Aid (UDA). Use of the UDA results in a series of indicative retention rates predicting how long the procedures required to carry out Virtual Learning Environment (VLE) content production tasks will be remembered. Considerable variability in retention rates for differing VLE content production tasks was indicated. The study reveals that improvement in predicted VLE content production skills retention rates may be observed when a quality job aid is available and the mental processing complexity resulting from conducting VLE tasks is reduced. Outputs from this research can inform the design of VLEs, lead to the development of targeted training for teaching staff, and the better design of effective resources in order to mitigate skills fade in VLE content production tasks.  相似文献