数字电视视频压缩标准

简述MPEG、JPEG与H系列图像压缩编码国际标准中与高清晰度数字电视视频相关的编码技术,并指出各自的特点、性能与应用。     

Adolescent girls’ race/ethnic status, identities, and drive for thinness

Using data from 7272 adolescent US girls, we explore how girls’ race/ethnic group status affects their bodyweight, perceptions of overweight, and weight control practices. We hypothesize that a girl’s race/ethnic status influences her basic identity which in turn prompts her to adopt or reject a “drive for thinness.” After controlling for family and peer support, school engagement, family SES, maturation, and family structure, we find that girls’ race/ethnic status influences their susceptibility to the thinness ideals of mainstream culture. African American girls weigh more than Asian, Hispanic, or White girls, but at any given weight they perceive themselves as overweight and attempt to control their weight less. Asian American and White girls invest most in thinness dynamics. Some evidence also suggests girls from lower SES families are less driven to be thin. Our results affirm the utility of viewing material bodies as “situations” that are experienced and interpreted in accord with identity group relations and dynamics.     

Assessing the Concept of the ‘Insecure‐Other’ Category in the Cassidy–Marvin Scheme: Changes Between 4 and 6 Years in the English and Romanian Adoptee Study

We set out to explore the meaning of the attachment categories in the Cassidy/Marvin strange situation procedure, as employed in the home, using data from a longitudinal study of children adopted into UK families up to the age of 42 months from Romanian institutions, and of adopted children without the experience of institutional care––both groups being assessed at 4 and 6 years of age. Inter‐rater reliability was found to be good. Security (meaning the use of the parent as a secure base and no negative behavior on reunion) was the modal categorical rating in both the institution‐reared and comparison groups, but the category of anomalous non‐normative behavior (meaning a lack of any ordered attachment behavior as covered by the standard ratings), previously labeled ‘insecure‐other’, was more common in the institution‐reared children. Because this was unassociated with the usual manifestations of insecurity (such as avoidance or resistance) and because it was largely evident in interactions with the stranger, it is concluded that the adjective ‘insecure’ was not appropriate. Although this ‘insecure‐other’ category was associated with disinhibited attachment as reported by parents (meaning a lack of differentiation among adults, a willingness to go off with strangers and a lack of checking back with parents in anxiety‐provoking situations), it did not prove to be a good index of disinhibited attachment because changes over time in the ‘insecure‐other’ category were not associated with changes in the rate of disinhibited attachment. Also, whereas the rate of ‘insecure‐other’ fell markedly in the institution‐reared group between 4 and 6 years of age, it rose in the comparison group, raising queries over its meaning.     

当代印度政坛中的雅利安人入侵理论争议初探

长期以来,由于受西方知识界对印欧文化百年研究积累的影响,＂雅利安人入侵理论＂始终位居学界主流,并进入印度与世界各国的教科书中,成为我们诠释印度古代历史的重要基础;时至今日,在后殖民学术批判风潮与印度教民族主义的推波助澜之下,此一理论却俨然成为具有高度政治争议性的论题。影响所及,不光是在印度国内的学界,更波及全世界的印度学研究社群。究竟对于＂雅利安人入侵理论＂的争论如何影响当代印度政治发展？此一理论为什么又能引起如此惊人的政治效应？各方对于此一理论的基本立场差异又是如何？透过本文的讨论,我们希望能针对这些问题提出回答。     

汉语语篇中间接回指的认知研究

本文主要从认知语用的角度来研究汉语短篇小说中间接回指的释义问题。通过结合认知语法的概念参照点模型和关联理论,提出了一套可以综合处理各种间接回指的释义原则。     

对中国英语教材中建议对话的研究

探讨了中国英语教材中＂建议＂对话是否符合英语本族语者的会话习惯。研究发现,教材对话中＂建议＂的三种答复类型的比例和英语本族语者存在显著差异;教材对话中＂延缓答复＂方式和本族语者不同;教材对话没能像本族语者那样采取＂相互肯定＂和＂转换话题＂等方式退出建议;教材中几乎没有任何（元）语用信息。在对这些现象产生的原因进行了分析的基础上,提出一些有针对性的教材改进方案。     

‘Pains of imprisonment’: narratives of the women partners and children of the incarcerated

This paper focuses on an important line of inquiry in contemporary criminal justice social work research: the collateral consequences of incarceration in the Chinese context. It gives an insight into the impact of incarceration on families from an insider's perspective. An analysis of interviews with 10 partners and 10 children yielded three major themes concerning the impact of imprisonment: the problems associated with the imprisonment of a family member, the coping strategies used and views on the importance of maintaining family ties. It is hoped that this study will give practical guidance regarding what should be done, and how, to reduce the negative consequences brought about by the absence (temporary or permanent) of the imprisoned on their families, including both their partners and vulnerable children.     

'I made some mistakes . . . but I love them dearly' the views of parents of children in informal kinship care

In-depth semi-structured interviews with 30 parents of children living with relatives in informal kinship care arrangements revealed the parents' views of the reasons for the informal kinship care arrangements, quality of their relationships with the children and their caregivers, their current and future roles in their children's lives, feelings experienced when with and away from the children, positive and negative aspects of kinship care, future goals and dreams for their children, and their assessments of their own strengths and challenges. Results of these interviews suggest several implications for social work practice and research.     

韩礼德的系统观批判

以国内学者对韩礼德的系统语法的研究成果为基础,以当代系统科学为参照,把韩礼德的系统语法所体现出来的系统观放在系统科学的框架内,来探讨韩礼德系统思想的科学性：肯定其在方法论上的可取之处,探讨其由方法论和语言的性质所决定的他的语言系统描写的局限性,以及他的系统描写在反映语言实际运作方面的局限性。     

基于C／S的煤矿生产调度信息管理系统开发与应用

煤矿生产调度是煤矿企业管理中安全生产的指挥中心,对煤矿的安全生产起到了至关重要的作用。在已建成的网络平台的基础上,开发基于C／S模式的煤矿调度管理信息系统（MIS）,结合计算机网络技术、数据库技术和信息管理技术,实现矿级调度与集团总调度数据通信、信息资源共享和管理。