基于GARCH模型的中体产业股票价格波动性实证研究

以1998年3月-2007年12月中体产业股份有限公司股票的2 535个日收盘价格指数为研究样本,运用GARCH模型对中体产业股票价格的波动性进行了实证研究,结果表明,中体产业股票价格的时间序列存在明显的非线性特征,1998年3月-2007年12月间出现两次大幅度的波动.股价收益率具有显著的波动集聚性,且表现出"尖峰、厚尾、非正态"的特征,在10%、5%、1%临界值水平下均存在显著的平稳性.GARCH(1,1)模型可较好拟合中体产业股票价格的波动变异性.股价收益率的波动具有较强的波动集聚性和持续性,且收益率当期方差冲击的79.86%在下期仍存在.从该模型的条件异方差看出中体产业股票价格的波动幅度较大,波动集聚现象较为持久.     

‘He is the Vagabond that Hath No Habitation in the Lord’: The Representation of Quakerism as Vagrancy in Interregnum England,c. 1650–1660

This article examines the printed representation, and prosecutorial characterisation, of the movements, actions and motivations of early Quakers as vagrant. It argues that the prevalence and power of representing (and subsequently treating) early Quakers as vagrants is an understudied aspect of the social and cultural history of the Society of Friends, particularly in Interregnum England. As evidence, it interrogates a furious pamphlet debate between mid-century religious writers and preachers, who devoted much time and ink to painting Quakers as mendacious vagabonds, and Quaker ‘First Publishers’, who responded at length and in a striking way to these accusations. The article concludes that these images of Quakerism as a form of ‘spiritual vagrancy’ created historically significant echoes in English and Atlantic culture.     

一种鲁棒的多尺度稀疏表示SAR目标识别方法

提出一种基于多尺度Gabor滤波特征提取和稀疏表示的SAR图像目标识别方法。首先,在目标分割的基础上,利用Gabor滤波器对SAR目标图像在不同方向上进行滤波,增强目标的局部特征;然后,根据稀疏表示模型,以训练样本特征为原子构建字典,利用稀疏求解算法选择最优的原子集合来表示测试样本特征,进而计算表示系数中非负值的l₁范数来判别测试样本。实验结果验证了该算法的有效性与鲁棒性。     

藏羌走廊民族传统体育文化符号表征研究

采用文献资料法、逻辑推理法并结合田野考察法,以文化人类学和社会表征理论为依托,阐释藏羌走廊民族传统体育文化符号表征的意义。研究认为：藏羌走廊民族传统体育文化符号具有“三征并存”的功能结构和“三化并行”的功能价值。通过对藏羌走廊民族传统体育文化符号表征的研究,对藏羌走廊民族传统体育文化资源的传承与发展,以及人类学家和民族学家对民族传统体育文化符号的深层次研究具有导向作用。     

An interview with Marie-José Mondzain: what is an image?

ABSTRACT

Marie-Jose Mondzain is one of the major philosophers writing about image, iconography, and representation today. In this interview, she discusses a few of the central ideas in her approach to and thinking about the nature of image and image-making as they bear upon the emergence of subjectivity and visibility in general. According to Mondzain, images are not visual objects we may or may not see; rather they are the site where the visible and its invisibility crisscross each other in opening the field of presence. Images, as Mondzain says in the interview, are cracks or leaks in being. They are where lights first come in and where man and beings are born to each other in their being-in-the world, that is, in their truth. Moving beyond historical and theoretical reflections, Mondzain turns to discuss things and scenes of mass media of late, addressing issues of pleasure, anxiety, desire, and the like, wherein ideologies, power, and the lure of images can be seen to intersect with our everyday life that has become irrevocably one of passive mobility. To the point at every turn, her answers to questions in this interview provide a glimpse to her forceful thinking and insights.     

考研群体信息需求的调查与分析

本文通过实际调查和数据统计,分析了考研群体信息需求的特征,提出了有针对性的服务措施。     

浅论运动队群体效能的发挥

运动队群体效能就是运动队队员整体中潜在的积极作用,群体效能不等于成员之间的简单相加,因为事物在组合过程中可以发生质变。本文就此进行探讨。     

新产品开发过程中R＆D与市场营销整合

新产品开发过程中，E＆D与市场营销人员需要相互协作，在整合的基础上快速推出新产品。但由于E＆D与市场营销人员属于不同的职能部门，有着不同的职业习惯，实现跨部门的整合会遇到很多困难和障碍。     

广西高校体育专业体操课程多元化发展的探索与实践

通过对广西高校体育专业体操教学多元化发展现状的调查与分析,总结经验发现不足.探讨了如何实施培养高素质体育人才和完善体操课程的设置;为体操教学改革的深化提供参考依据.     

对浙江四维女排队员间人际关系的调查

本文采用社会调查法，通过揭示浙江四维女排人际关系状况，使四维女排群体内部的人际关系清晰化、具体化和数量化，从而为寻找提高浙江四维女排群体绩效的方法提供依据。