谈《大学英语》(全新版)《综合教程》课后练习的处理方法

《大学英语》(全新版)《综合教程》是一套具有新颖练习形式的教材,文章结合教学实践,对《大学英语》(全新版)《综合教程》课后练习的处理方法进行了探讨,采用折中主义的课堂教学方法,以学生为中心,又充分发挥教师的作用,发挥课后练习的积极作用,从而提高学生的综合语言应用能力。     

结构基因组学与蛋白质核磁共振(NMR)光谱

阐述了核磁共振光谱在蛋白质结构基因组学研究中的重要作用,包括核磁共振光谱在结构基因组学研究中的优点和缺点,研究技术进展和展望。     

探索性实验是创新型人才培养的有效途径

通过探索性实验与高素质创新型人才培养关系的探讨,阐述了探索性实验是高素质创新型人才培养的重要途径和探索性实验的实施程序。     

Probability Density Function Method for Observing Reconstructed Attractor Structure

Probability density function (PDF) method is proposed for analysing the structure of the reconstructed attractor in computing the correlation dimensions of RR intervals of ten normal old men. PDF contains important information about the spatial distribution of the phase points in the reconstructed attractor. To the best of our knowledge, it is the first time that the PDF method is put forward for the analysis of the reconstructed attractor structure. Numerical simulations demonstrate that the cardiac systems of healthy old men are about 6 - 6.5 dimensional complex dynamical systems. It is found that PDF is not symmetrically distributed when time delay is small, while PDF satisfies Gaussian distribution when time delay is big enough. A cluster effect mechanism is presented to explain this phenomenon. By studying the shape of PDFs, that the roles played by time delay are more important than embedding dimension in the reconstruction is clearly indicated. Results have demonstrated that the PDF method represents a promising numerical approach for the observation of the reconstructed attractor structure and may provide more information and new diagnostic potential of the analyzed cardiac system.     

Non-Rigid Medical Image Registration with Joint Histogram Estimation Based on Mutual Information

A mutual information-based non-rigid medical image registration algorithm is presented. An approximate function of Hanning windowed sinc is used as kernel function of partial volume (PV) interpolation to estimate the joint histogram, which is the key to calculating the mutual information. And a new method is proposed to compute the gradient of mutual information with respect to the model parameters. The transformation of object is modeled by a free-form deformation (FFD) based on B-splines. The experiments on 3D synthetic and real image data show that the algorithm can converge at the global optimum and restrain the emergency of local extreme.     

新FRP技术加固钢筋混凝土矩形柱改善延性的试验研究

Reinforced concrete （RC） columns lacking adequately detailed transverse reinforcement do not possess the necessary ductility to dissipate seismic energy during a major earthquake without severe strength degradation. In this paper, a new retrofit method, which utilized fiber-reinforced plastics （FRP） confinement mechanism and anchorage of embedded bars, was developed aiming to retrofit non-ductile large RC rectangular columns to prevent the damage of the plastic hinges. Carbon FRP （CFRP） sheets and glass FRP （GFRP） bars were used in this test, and five scaled RC columns were tested to examine the function of this new method for improving the ductility of columns. Responses of columns were examined before and after being retrofitted. Test results indicate that this new composite method can be very effective to improve the anti-seismic behavior of non-ductile RC columns compared with normal CFRP sheets retrofitted column.     

对电大教师绩效考核有效性的若干思考

电大教师绩效考核存在绩效考核指标体系欠科学、平均主义,忽略平时考核、对考核结果的反馈与应用不充分等问题,主要是由于对绩效考核缺乏科学理解,考核内容不够明确,考核过程缺乏客观性,缺少与考核配套的激励机制。可以通过转变观念,建立电大特色的教师考核指标体系,建立与绩效考核相配套的激励机制、反馈评价应用机制,将绩效考核与职业生涯规划相结合,提高绩效考核的有效性。     

工作满意度、组织承诺与关系绩效的关系实证研究

通过在成都、广州、深圳一些企业的实证研究,探讨组织承诺、工作满意度与关系绩效之间的关系,发现组织承诺三维度、工作满意度五维度与关系绩效两维度之间几乎都具有非常显著的相关关系;但是将工作满意度和组织承诺作为关系绩效的预测变量时,发现二者的因果关系非常不显著,因此推测工作满意度、组织承诺可能是关系绩效的前因中介变量或者调节变量。     

论师范美术教育的发展

现在师范美术教育很大程度上偏离了教师培养的轨道,为了能够使师范美术教育得到更好的发展,必须重视师范美术教师的培养及师范美术教育专业学生的引导工作。     

桑树DNJ提取、纯化和检测的研究进展

1-脱氧野尻霉素(1-deoxynojirimycin,DNJ)是存在于桑树中的一种多羟基哌啶生物碱,因其通过抑制α-葡萄糖苷酶活性,进而具有降血糖、抗病毒、抗肿瘤等生理活性和药理活性.DNJ广泛存在于桑树的各种组织中,不同桑树类型和品种中DNJ含量不同,采取的每一种提取、测定方法均具有选择性和特异性,只适用于某种类型或某种桑树品种样品的纯化和检测.同时,DNJ在桑树体内的含量较低,而且桑树体内其他次生代谢物质的干扰增加了DNJ提取和测定的难度.因此,目前文献中报道的DNJ提取、分离纯化和检测方法较多.针对已报道的DNJ的提取、分离纯化和检测方法,综述了近年来DNJ研究方面的最新进展,为更好利用和开发DNJ制品,为DNJ的工业化生产提供参考和借鉴.