《大戴礼·夏小正》所用历法考证

<大戴礼·夏小正>所用历法,迄今主要有"十月太阳历"、"殷历"和"夏历"等三种观点.比较<夏小正>与<礼记·月令>,它们记载的物候相一致的情况居多;测算星宿的距度.可推知<夏小正>与<月令>记载的正月、三月、五月、六月和八月的星象皆一致.可见,<夏小正>与<月令>使用的历法大体相同.另,<月令>与<淮南子·时则训>记载的星象亦一致,且<淮南子·时则训>中斗建寅这一星象为夏历的主要标志,可见<月令>使用的是夏历,而<夏小正>所用历法亦以夏历为主.     

Quantitative evaluation of air pollution in transport strategic environmental assessment: a case study based on uncertainty analysis and graphic information system technology

Although the impact of road transport on urban air quality has achieved a high profile in China, still greater attention is required as it has not yet been considered fully even in relation to the road network linking cities and urban areas. Strategic environmental assessment （SEA） is a systematic and comprehensive process for evaluating the environmental impacts of a policy, plan or program in publicly accountable decision-making. Air pollution has been recognized as a significant issue in most transport SEA practices. The Strategic Environmental Assessment of the Hubei Road Network Plan （2002-2020） （HRNP） was introduced as one of the World Bank＇s pilot SEA projects. An effective framework was developed to investigate the functional relationship between the road network and its potential air pollutant emissions. In this study, two indicators were identified： emission intensity/ inventory of pollutants and the spatial distribution of the most polluted areas. Because strategic actions are inherently nebulous and data quality is often disappointing, three alternative scenarios were employed to address uncertainties and data/scale issues. Calculations were made using emission models and results were analyzed with the help of statistical tools and the geographic information system （GIS）. The results from the project implementation and the feedback from the World Bank have both shown that the proposed framework is effective in the transport SEA process.     

试论远程教育网络考试系统的数据库开发

在研究远程教育教学和管理各环节发展不均衡现状的基础上。从数据库技术角度提出设计开发网络考试系统的思路并就部分关键环节的具体步骤进行了深入探索。     

燕赵成语及其当代价值初探

燕赵成语是指与燕赵地域或燕赵文化相联系的成语。好气任侠的燕赵文化精神赋予燕赵成语鲜明的文化特征——雄浑刚健的侠义气质。燕赵成语展现的侠义精神与当代社会的正义精神具有内在关联性。侠义精神中公平正义的价值观与伸张正义的勇气、意志可以作为合成元素,整合到当代社会正义精神中来。     

Learning to rank with (a lot of) word features

In this article we present Supervised Semantic Indexing which defines a class of nonlinear (quadratic) models that are discriminatively trained to directly map from the word content in a query-document or document-document pair to a ranking score. Like Latent Semantic Indexing (LSI), our models take account of correlations between words (synonymy, polysemy). However, unlike LSI our models are trained from a supervised signal directly on the ranking task of interest, which we argue is the reason for our superior results. As the query and target texts are modeled separately, our approach is easily generalized to different retrieval tasks, such as cross-language retrieval or online advertising placement. Dealing with models on all pairs of words features is computationally challenging. We propose several improvements to our basic model for addressing this issue, including low rank (but diagonal preserving) representations, correlated feature hashing and sparsification. We provide an empirical study of all these methods on retrieval tasks based on Wikipedia documents as well as an Internet advertisement task. We obtain state-of-the-art performance while providing realistically scalable methods.     

TWIMS手机图书馆的研究与实现

文章介绍清华大学图书馆设计、开发并推广应用的手机图书馆系统TWIMS,针对其实现过程中的相关问题进行了阐述,着重介绍了TWIMS系统的体系结构和开发模式。     

流媒体国际标准化DRM技术动态综述

DRM既是内容流通领域的重要技术,也是确保同时满足内容的创作者、提供商、用户等不同角色需求这一复杂流通环境的必要技术。DRM的应用会部分妨碍用户获取内容,但因不当拷贝内容的事件持续发生,提供商针对各种问题被迫实施DRM强化技术。文章首先介绍早期的DRM;通过DVD应用案例概述DRM技术;阐述快速普及的手机移动设备的DRM标准,NpOMADRM;在存储介质的DRM方面,以SD卡为例介绍CPRM技术;有关DEM国际标准化活动,以MPED--21为中心案例,解说IPMP技术;在事实标准化活动案例中,列举业界主导型DRM,即Coral,给出其要点;最后,总结DRM的现状和未来。     

来自东方的时尚——清市井风情图外销壁纸

<正>17～19世纪,中国外销壁纸生产盛极一时,先后风靡于欧洲和美国等地。伴随着新航路的不断开辟,东西方之间的文化交流与贸易交往日益频繁。尤其是清乾隆二十二年(1757年)颁布了"一口通商"的政策,广州被指定为中国唯一合法的海上对外贸易特区。优越的地理位置和特殊的政策,使广州成为了这     

图书馆权利中的几个基本问题浅谈

从图书馆权利的概念、要素、分类方面进行分析，提出图书馆权利的五个要素。指出图书馆权利是图书馆人以相对自由的作为或不作为的方式，获得知识自由和信息自由而拥有的权利的观点,它是个人权利和集体权利的统一，本质是一种自由理念和机制，图书馆权利要以读者为核心，同时应兼顾到它的实现。     

合理定位,强化优势,突出特色——新升格本科院校教师教育特色建设的探索与思考

合理定位,强化教师教育传统和优势,对于推动新升格本科院校的可持续发展具有重要意义。结合河池学院教师教育的改革与创新,提出教师教育特色建设思路,对教师教育的专业建设、课程建设、人才培养模式等方面进行探索,提升了服务地方基础教育的教师人才培养质量。