液压系统中液流压力损失的相关分析

分析液压系统中压力损失产生的原因,液流压力损失与雷诺数的关系,局部压力损失在不同管道下的计算;影响液流压力损失的因素,减少液压系统中压力损失产生的相关方法。     

Estimation of financial loss ratio for E-insurance: a quantitative model

In view of the risk of E-commerce and the response of the insurance industry to it, this paper is aimed at one important point of insurance, that is, estimation of financial loss ratio, which is one of the most difficult problems facing the E-insurance industry. This paper proposes a quantitative analyzing model for estimating E-insurance financial loss ratio. The model is based on gross income per enterprise and CSI/FBI computer crime and security survey. The analysis results presented are reasonable and valuable for both insurer and the insured and thus can be accepted by both of them. What we must point out is that according to our assumption, the financial loss ratio varied very little, 0.233% in 1999 and 0.236% in 2000 although there was much variation in the main data of the CSI/FBI survey.     

希望的追寻与失落——对新世纪底层文学中焦虑话语的心理透视

底层文学已成为新世纪文学创作的一种趋向,作为一种异质性的文学创作逐渐引起批评界和理论界的关注。关注底层求生者,关注底层求生者的生存焦虑和身份焦虑,也成为底层写作者抒写的一种范式,注重从心灵的探讨以期寻求人性的思考,在关注底层求生者生存境况的前提下更注重从心理去捕捉他们希望的追寻与失落。     

县级电大学生流失的原因及对策

因为受经济、区域环境、学生主观等方面因素的影响,县级电大开放教育学生的流失率比较高。为了降低学生的流失率,县级电大应转变观念,建立开放教育的教学模式;加强新生入学教育;完善学习支持服务系统;强化服务意识和加强班主任工作管理;加强学习小组建设;调整教学计划和收费方式。     

视频采集中丢帧的原因及解决办法

视频采集是数字媒体设计及影视制作中不可或缺的关键步骤,视频采集的质量好坏直接影响作品的后期制作,而在视频采集及影视制作中丢帧现象是较为常见的一个问题.常见丢帧现象往往是由于硬件、软件、DV带本身或节目回录造成的,要避免丢帧现象需优化操作系统和硬盘,使用兼容性较好的计算机.     

中西音乐艺术比较研究

从声、调、谱、器等四个方面,论述了中西音乐的比较,中西音乐差别的根本源于各自不同的文化体系。西方文化的开放性造就了西方音乐的统一化、标准化,进而形成西方抽象的音乐发展逻辑体系。中国农耕文化的自给自足性,是形成中国音乐近人声、尚自然、展个性的主要原因。     

河南地区小学生数学学习策略水平的调查研究

本研究运用小学生数学学习策略量表测查了795名小学生的数学学习策略使用情况。结果表明：（1）小学生数学学习策略量表有着较高的信度和效度,各维度的项目间具有良好的一致性。（2）不同学校、成绩组的小学生策略的使用有显著差异;四、五、六年级表现为先降后升的趋势;女生在各策略水平上均显著高于男生。（3）通过判别分析,发现监控调节策略是区分小学优、差学生的最好雏度。     

Melancholic mothering: mothers,daughters and family violence

Through selected theories of melancholia, this paper seeks to shed some fresh interpretive light on the reproduction and disruption of gender, violence and family turmoil across generations of mothers and daughters. The originality of the paper lies in its exploratory deployment of theories of melancholia to consider issues of women, violence and generation. It addresses these matters through a discussion of the intergenerational emotional archives accumulated by two mother–daughter pairs in relation to their different experiences of sexual and other violence. It shares the mothers’ experiences of violence in their childhood and shows how these help to shape the ways in which they raise their daughters and address the troubles that their daughters experience. Different theories of melancholia assist us to explain the dissimilar emotional dynamics between these mother and daughter pairs. But equally their stories suggest the analytical potential of different theories of melancholia for understanding women’s and girls’ diverse responses to violence. Freud’s, Irigaray’s and Silverman’s constructions of melancholia, which are to some extent based on notions of emptiness, lack and insufficiency, are deployed alongside Eng and Kazanjian’s interpretation of a melancholic state of being which focuses on the creative potential of animating the remains of loss; an interpretation that invokes an agential relationship to the losses that violence provokes. The former help to explain what Eng and Kazanjian might see as the ‘hopeless politics’ associated with certain melancholic responses to violence and the latter help to explain what they might consider more ‘hopeful politics’ associated with responses that mobilise a more agential relationship to loss. Although not subscribing to such a stark binary interpretation, we nonetheless argue for an analysis that acknowledges the different ways that the remains of loss are animated. The paper arises from a wider cross‐generational study in Australia of the lives of educationally, economically and culturally marginalised young women and their mothers.     

弱非局域介质中的高斯型损耗空间光孤子

利用变分法研究了1＋1维傍轴高斯光束型在含有小损耗的弱非局域非线性介质中的传输特性,得到了光束各参量的演化方程和一个临界功率。在介质损耗足够小的前提下,当光束初始功率等于临界功率时,得到了一个束宽随传输距离缓慢展宽的准空间光孤子——损耗空间光孤子。     

新形势下加强高校国有资产管理的探讨

随着经济的发展和教育体制改革的不断深入，国家投入到高校的资产和高校利用自身优势形成的各类资产已颇具规模。为了加强国有资产管理，维护国有资产安全与完整，防止国有资产流失，本文就目前高校国有资产管理存在的问题和解决对策进行探讨。