提高网络环境下的检索效率

围绕查全率、查准率这两个重要指标对网络环境下影响检索效率的因素进行了分析,提出提高网络环境下检索效率的一些方法,以便更好地服务于用户.     

光绪刊《湘潭县志》评介

光绪刊《湘潭县志》出版后,得到了李肖聃、梁启超等大师的赞赏,但也有人对书中的史料等方面的问题提出了批评。我们今天继承这份文化遗产,不能笼统说它好或坏,应实事求是的具体的分析其好坏得失,吸收其优点,克服其不足。     

海外华人宗族文化及其历史使命

本文依据近半个世纪以来海外华人宗族的变化和发展，探讨了海外华人宗族文化的实质与特征。认为海外华人宗族文化是华夏宗族文化的外延和演变，具有悠久的历史渊源，深厚的社会基础和丰富的思想文化内涵，以及开放、兼容、更新的自我发展能力，因而它具有强大的生命力。并据此对海外华人宗族文化在２１世纪的发展前景与历史使命作了展望和简要论述。     

农副产品信息网个性化服务研究

针对涉农用户所关心的信息资源问题,提出了个性化服务,并对实现个性化服务的农副产品信息网从功能、结构、服务方式等方面进行了研究、设计。在实现个性化服务时,推出的服务方式是：定制服务和推送服务。通过这两种服务最终实现了为不同用户提供不同需求的目的。     

域外检察改革趋势比较研究

上个世纪七八十年代以来，西方各国相继进行一系列的司法改革，取得了显著成效。当前我国也处于司法改革的关键时期，作为司法改革组成部分的检察制度的改革自然也是重中之重。检察改革的目标是实现公正和效率。但应当改革哪些内容，除以目标为导向外，适当地借鉴其他国家检察改革合理的经验对中国检察改革将大有裨益。文章首先考察了当今世界几个主要国家检察制度改革的新动向，试图从中发现域外检察制度发展的趋势；并结合中国现行检察制度中存在的主要问题，尝试性地提出了一些检察改革的建议。     

Issues in Second Language Acquisition

Input plays an important part in the acquisition of second language.This report will just focus on Krashen＇s Input Hypothesis and Long＇s Interaction Hypothesis concerning input.First a summary will be made about the two theories,and then the writer will make a comparison between the two.This report will conclude with the writer＇s observations of how her thinking about ＇input＇ has been clarified in the process of preparing and writing this report.     

民族地区经济发展存在的主要问题和矛盾

民族地区经济发展中存在着诸多有利因素 ,尤其是西部大开发战略的实施 ,将极大地促进民族地区经济发展。但也存在着社会发育程度与发展社会主义市场经济、资源开发与环境保护、公平与效率、小生产与大市场大流通等方面的矛盾     

Assessing the effects of land use and land cover patterns on thermal conditions using landscape metrics in city of Indianapolis,United States

Direct applications of remote sensing thermal infrared (TIR) data in landscape ecological research are rare due to limitations in the sensors, calibration, and difficulty in interpretation. Currently there is a general lack of methodology for examining the relationship between land surface temperatures (LST) derived from TIR data and landscape patterns extracted from optical sensors. A separation of landscapes into values directly related to their scale and signature is a key step. In this study, a Landsat ETM+ image of Indianapolis, Unites States, acquired on June 22, 2000, was spectrally unmixed (using spectral mixture analysis, SMA) into fraction endmembers of green vegetation, soil, high albedo, and low albedo. Impervious surface was then computed from the high and low albedo images. A hybrid classification procedure was developed to classify the fraction images into seven land use and land cover (LULC) classes. Using the fractional images, the landscape composition and pattern were examined. Next, pixel-based LST measurements were correlated with the landscape fractional components to investigate LULC based relationships between LST and impervious surface and green vegetation fractions. An examination of the relationship between the LULC and LST maps with landscape metrics was finally conducted to deepen understanding of their interactions. Results indicate that SMA-derived fraction images were effective for quantifying the urban morphology and for providing reliable measurements of biophysical variables. LST was found to be positively correlated with impervious surface fraction but negatively correlated with green vegetation fraction. Each temperature zone was associated with a dominant LULC category. Further research should be directed to the theoretical and applied implications of describing such relationships between LULC patterns and urban thermal conditions.

贵州苗族聚居区苗族女童教育普及现状及研究状况

鉴于女童教育对妇女人力资源开发的重要地位与作用,坚持促进女童教育均衡发展成为迈向社会主义和谐社会,实现全面小康社会的重要途径。当前民族地区女童教育滞后,对其普及现状及研究状况的切合实际的了解、认识,对民族地区女童教育发展战略研究具有极为重要的现实意义,本文仅就贵州苗族聚居区苗族女童教育为个案进行剖析。