地方高校本科生科研能力要素的培养     

谢彦红 《滨州学院学报》2010,26(4):115-118

采用层次分析法对地方学院本科生科研能力要素的调查问卷进行统计分析,结果表明:文、理、工3类本科生科研能力各指标的重要度呈现相似性。3类本科生所需科研能力要素重要度排序与所学学科特点有一定的相关性。在具体排序方面,受学生就读学科特点的影响,3类本科生科研能力部分要素权重呈现出一些细小差别。  相似文献   

The US-preexposure effect in honeybees     

Charles I. Abramson  M. E. Bitterman 《Learning & behavior》1986,14(4):374-379

Signaled avoidance was studied in individual honeybees that visited the laboratory regularly to take sucrose solution from a target set on the sill of an open window. During feeding, substrate vibration or airstream was used to signal a brief shock that could be avoided by breaking off contact with the food for a few seconds. Aversive conditioning of the context was measured in terms of return time (the time between successive visits). In Experiment 1, experience with unsignaled shock was found to lengthen return time—which experience with signaled shock did not—and to impair performance in subsequent avoidance training with signaled shock (the US-preexposure effect). In Experiment 2, experience with unsignaled shock given after signaled avoidance training lengthened return time but had no effect on response to the signal in a subsequent extinction test. These results closely resemble the results obtained in analogous experiments with vertebrates.  相似文献   

知识经济时代对编辑创新的要求   总被引：2，自引：0，他引：2  

聂晶磊 《开封教育学院学报》2002,22(3):70-71

知识经济时代的核心和灵魂是创新。编辑工作也只有不断创新，才能跟上时代的步伐。这就要求编辑工作者做到以下几点：更新思想观念，强化编辑意识；积累文化知识，优化知识结构；理论联系实际，创造特色精品。  相似文献   

Comparative analysis of learning in honeybees     

M. E. Bitterman 《Learning & behavior》1996,24(2):123-141

The performance of free-flying and harnessed honeybees has been studied in a variety of experiments patterned after those in which learning in vertebrates has been studied—among them experiments on amount, quality, and probability of reward; on compound conditioning and discrimination; and on spatial learning and memory. Despite the remoteness of the evolutionary relationship and the vast differences in brain size and structure, the results for honeybees are strikingly similar to those for vertebrates in many respects and different in only a few. The extent to which phenomena of learning common to honeybees and vertebrates can be understood in terms of common functional principles and mechanisms remains to be determined. None of the differences in the results for honeybees and vertebrates points unmistakably to a difference in their learning.  相似文献   

Latent inhibition in honeybees     

Charles I. Abramson  M. E. Bitterman 《Learning & behavior》1986,14(2):184-189

Aversive conditioning was studied in individual honeybees flying back and forth between the hive and the sill of an open laboratory window, where they took sucrose solution from a target so constructed that shock could be delivered while the proboscis was in contact with the solution. During feeding, a conditioned stimulus—substrate vibration or airstream—was paired with brief shock avoidable by interruption of feeding. In Experiment 1, unreinforced preexposure of the conditioned stimulus was found to retard acquisition (latent inhibition). In Experiment 2, which was designed to inquire into the stimulus specificity of the effect, differential conditioning was found to be impaired by unreinforced preexposure of the positive stimulus and facilitated by unreinforced preexposure of the negative stimulus. In Experiment 3, a summation experiment designed to test various alternative explanations of the effect, a preexposed stimulus was found to suppress response to an excitatory conditioned stimulus when the two stimuli were presented together.  相似文献   

Performance of honeybees in reversal and ambiguous-cue problems: Tests of a choice model     

P. A. Couvillon  M. E. Bitterman 《Learning & behavior》1986,14(3):225-231

Individual honeybees visiting the laboratory regularly for food were trained in a variety of discrimination-reversal and ambiguous-cue problems to choose between two differently scented targets, of which one or the other contained sucrose solution. The training was simulated with a set of equations for predicting choice on the basis of associative strength, and the accuracy of prediction was indexed by the root-mean-square deviation of simulated data from obtained data. Developed earlier on the basis of performance in other problems (Couvillon & Bitterman, 1985), the model proved adequate for the new problems as well.  相似文献   

Performance of honeybees in analogues of the rodent radial maze     

S. Burmeister  P. A. Couvillon  M. E. Bitterman 《Learning & behavior》1995,23(4):369-375

The performance of individual honeybees pretrained to forage at a laboratory window was studied in three rudimentary analogues of the radial maze designed for the study of short-term spatial memory in rats. A linear arrangement of three targets was used in Experiment 1, a triangular arrangement of three targets in Experiment 2, and a rectangular arrangement of four targets in Experiment 3, with reward only for the first response to each of the targets presented on any given trial. Several systematic patterns of responding were observed, with no indication that the choices made by the animals were influenced by memory of targets recently visited.  相似文献   

稀土类热稳定剂合成条件研究及性能测试   总被引：1，自引：0，他引：1  

马志军  糜淑珍  梅业霞  杨萍 《南通职业大学学报》2001,15(4):44-46

本对热稳定剂的合成条件进行了研究，确定了硬脂酸镧的最佳配方。对硬脂酸盐类热稳定剂的性能进行了测定，摸索了测定硬脂酸镧的分析方法。  相似文献   

论《新列国志》的艺术创见     

聂付生 《上海师范大学学报(哲学社会科学版)》2001,30(1):95-100

冯梦龙编纂的<新列国志>在学术界至今尚未引起应有的重视,即使面世的几篇文章都以<东周列国志>为题,这对代表一个时代的文学大师是极不公平的.实际上,<新列国志>既能佐以历史,又能在史实的框架内任意虚构,驰骋想象,塑造了一大批栩栩如生的人物形象,结构错综复杂又井然有序,语言通俗而简练流畅,取得了使原作无可比拟的艺术成就.  相似文献   

富有特色的“集体家书”─—五邑的侨刊乡讯     

梅伟强 《五邑大学学报(社会科学版)》1999,(3)

江门五邑是全国著名侨乡,众多的侨刊乡讯是其一大特色。文章介绍了它的历史发展及鲜明特色,分析了其长盛不衰的奥秘所在。  相似文献