基于《中分表》的国家数字图书馆知识组织思考

对国家图书馆知识组织系统的历史、现状分析,提出基于《中分表》的国家数字图书馆知识组织系统的建设及应用构想方案。

主题标引规范工作文档的编制和应用——在《中分表》电子版环境下

基于主题规范控制现行模式的考虑,现阶段一般图书馆似乎应该优先考虑在《中分表》电子版和软件支持的现实环境下创建主题标引规范工作文档的可能模式。具体地说,编制工作可以在增加入口词、组代词、词表修订信息、增词和外文标识词等领域内展开,在实现手段上可以利用电子版提供的"用户评注"功能,从而为今后理想化的规范控制提供数据汇总积累。参考文献8。

《中分表》第二版使用过程中若干标引问题的探讨

对《中分表》第二版中的古国名主题词、文献文种、对外汉语教学主题、改写改编缩编文献、著名哲学家、医药科学文献的标引进行分析,并结合实例讲解。

《中图法》与《中分表》修订信息(连载5)

发布自2012年以来《中分表》的日常修订信息,以及《中图法》第5版修订信息。

《中图法》与《中分表》修订信息(连载2)

文章为发布自2006年以来《中分表》的日常修订信息,以及《中图法》第5版修订信息。

《中图法》与《中分表》修订信息(连载3)

发布自2006年以来《中分表》的日常修订信息,以及《中图法》第5版修订信息。

《中图法》与《中分表》修订信息

发布了自2006年以来《中图法》《中分表》的日常修订信息,以及《中图法》第5版修订勘误。

《中图法》与《中分表》修订信息(连载4)

发布自2006年以来《中分表》的日常修订信息以及《中图法》第5版修订信息。

地理学新发展背景下《中国分类主题词表》地理学类目调整新论

《中分表》作为我国规模最大的分类-主题一体化标引工具,在学科知识的组织和传播方面发挥了重要作用。然而,随着地理学的快速发展,现有《中分表》地理学类目存在一些知识更新不及时、类目设置不科学的问题。本研究通过分析地理学的最新发展,结合《中分表》现有地理学类目中存在逻辑层级不清、知识点涵盖不完整、内容分布过于分散的现状,提出将地理学类重新整合为综合地理学、自然地理学、人文地理学、信息地理学4个二级学科,并对细分学科进行合并整理以避免词表过于细碎冗长。新的分类法将分散在各相关学科的类目整合归类到K9类目下,并通过参见、互见的方式保留地理学与各学科之间的联系,同时添加一些新涌现的专业词汇保证主题词的时效性和科学性。本研究有助于提高图书编目和排架的工作效率、改善读者地理学文献的查阅体验,并对地理学知识的交流传播产生一定促进作用。

网络环境下的信息资源分类

随着21世纪的到来,科学技术迅猛发展,网络环境下信息的储存与检索手段发生了全新的变化。传统分类法已不适应于网络环境下的文献组织,也给学术期刊论文的规范化带来了新的问题。本文将传统分类法与网络信息组织进行了比较研究,提出以《中国法》(《中国图书馆分类法》)和《中分表》(分类号———主题词对应表)为基础,吸收网络分类体系的编制方法,编制《中国网络信息分类法》,作为我国图书馆的网络信息组织标准。

Prediction of Secondary Structure and B Cell Epitope of GH Protein from Acipenser sinensis

[ Objective] The aim was to predict the secondary structure and B cell epitope of growth hormone （GH） protein from Acipenser sinensis. [Method] With the amino acid sequence of GH protein from A. sinensis as the base, the secondary structure of GH protein from A. sinensis was predicted by the method of Gamier-Robson, Chou-Fasman and Karpius-Schulz, and its cell epitope was predicted by the method of Kyte- Doolittle, Emini and Jameson-Wolf. [Result] The sections of 18 -23, 55 -55, 67 -73, 83 -86,112 -114,151 -157 and 209 -211 in the N terminal of GH protein molecule had softer structure and these sections could sway or fold to produce more complex tertiary structure. The sections of 19 -23, 51 -71,84 -95, 128 -139, 164 -176 and 189 -195 in the N terminal of GH protein could be the epitope of B cell and there were flexible regions in these sections or near these sections of GH protein molecule. So the dominant regions could be in these sections or near these sections. [ Conclusion] The research provided the basis for the preparation of monoctonal antibody of GH protein from A. sinensis and provided the reference for the discussion for the molecular regulation mechanism of A. sinensis.

Unified Framework of Performing Chinese Word Segmentation and Part-of-Speech Tagging

The paper proposes a unified framework to combine the advantages of the fast one-at-a-time approach and the high-performance all-at-once approach to perform Chinese Word Segmentation(CWS) and Part-of-Speech(PoS) tagging.In this framework,the input of the PoS tagger is a candidate set of several CWS results provided by the CWS model.The widely used one-at-a-time approach and all-at-once approach are two extreme cases of the proposed candidate-based approaches.Experiments on Penn Chinese Treebank 5 and Tsinghua Chinese Treebank show that the generalized candidate-based approach outperforms one-at-a-time approach and even the all-at-once approach.The candidate-based approach is also faster than the time-consuming all-at-once approach.The authors compare three different methods based on sentence,words and character-intervals to generate the candidate set.It turns out that the word-based method has the best performance.

Liver alveolar echinococcosis in China: Clinical aspect with relative basic research

This paper deals with all aspects of liver alveolar echinococcosis (AE) including epidemiology, pathology, clinical manifestations, imaging examinations, diagnosis and differential diagnosis, surgical treatment and chemotherapy.The review is not only based on personal clinical experiences but also in combination with relative basic research such as proliferation and growth of alveococcus, preclinical studies of a novel compound extracted from TCM for treatment of liver AE, and molecular immunology used for specific AE diagnosis, etc.

Cloning the sterol carrier protein 2 genes of Japanese toad （Bufo japonicus formosus） and Chinese toad （Bufo gargarizans） and its tissue expression analysis

In this study,to clarify the bioactive polypeptides included in the skins and secretions of Bufo,we screened the Japanese toad(Bufo japonicus formosus) skin cDNA library by colony polymerase chain reaction(PCR),and obtained a transcript of 1 075 bp consisting of 1 37 bp 5′ untranslated region(UTR),515 bp 3′ UTR and a 423 bp open reading frame(ORF) encoding a polypeptide of 140 amino acid residues(GenBank accession number: KF359945).Homolog analysis showed a 70%–96% homology with sterol carrier protein-2(SCP-2) present in other animals,which is implicated in lipid metabolism of other organisms.The gene SCP-2 of Chinese toad(B.gargarizans) was cloned from a first strand cDNA of Bufo skin(GenBank accession number: KF381341) via PCR,whose encoding polypeptide has only one amino acid difference from that of Japanese toad.Tissue distribution analysis showed that SCP-2 expressed in all organs tested,though in the liver and spleen it manifested lower expression than in other organs.These findings might indicate SCP-2 being one of the active ingredients in toad skin.These findings may in turn have implications for further drug development from traditional Chinese medicine sources.

Analysis on Long-Term Change of Sea Surface Temperature in the China Seas

Long-term change of sea surface temperature （SST） in the China Seas from 1900 to 2006 is examined based on two different observation datasets （HadlSSTI and HadSST3）. Similar to the Atlantic, SST in the China Seas has been well observed during the past 107 years. A comparison between the reconstructed （HadISSTI） and un-interpolated （HadSST3） datasets shows that the SST wanning trends from both datasets are consistent with each other in most of the China Seas. The warming trends are stronger in winter than in summer, with a maximum rate of SST increase exceeding 2.7℃ （100year）-I in the East China Sea and the Taiwan Strait during winter based on HadISSTI. However, the SST from both datasets experienced a sudden decrease after 1999 in the China Seas. The estimated trend from HadlSSTI is stronger than that fi＇om HadSST3 in the East China Sea and the east of Taiwan Island, where the difference in the linear SST warming trends are as large as about 1℃ （100year）-I when using respectively HadISST1 and HadSST3 datasets. When compared to the linear winter warnling trend of the land surface air temperature （1.6℃ （100 year）-1）, HadSST3 shows a more reasonable trend of less than 2.1℃（ 100 year）-1 than HadISST 1 ＇s trend of larger than 2.7℃ （ 100 year）-1 at the mouth of the Yangtze River. The restllts also indicate large uncertainties in the estimate of SST warming patterns.

Spatial Distributions and Potential Sources of Long Chain(C_(30),C_(32)1,15-)Alkyl Diols in Surface Sediments from Eastern China Marginal Seas

Long chain alkyl diols have shown important potential for the reconstruction of sea surface temperature,productivities and upwelling conditions in marine or lacustrine environments.However,little is known about the distribution and sources of the diols in eastern China marginal seas(CMS),which are areas of important organic carbon sink.Here the contents of C_(30) and C_(32)1,15-diols were analyzed in 181 surface sediments from eastern CMS.The similar distribution pattern and strong linear correlation between C_(30) and C_(32) diols indicated that they had similar biological source,with a dominance of C_(30) diol.Their contents ranged from 7-2726 ng g^(-1) for C_(30) diol and 5-669 ng g^(-1) for C_(32) diol,and both showed higher values mainly in the mud area of the Yellow Sea,while the TOC normalized contents showed a more obvious seaward increasing trend.The similar distribution pattern and significant positive correlation between diols and the other marine biomarkers(brassicasterol,dinosterol,C_(37) alkenones) indicated C_(30) and C_(32) diols in eastern CMS were mainly from marine algae.This conclusion was also supported by principal component analysis(PCA).Our results also showed that sediment diol contents were generally related to marine productivity,suggesting that diols could be applied for marine productivity reconstruction in eastern CMS.

Study on the Concept of Per Capita Cumulative Emissions and Allocation Options

Global long-term emission reduction targets need well defined options for equitable allocation of greenhouse gas emissions. Scholars from developing countries put forward the concept of equitable per capita cumulative emission rights. There are four possible operational definitions resulting from this concept. These potential options for allocation of emission rights are expressed with mathematical equations. Through simple simulation, this paper reveals the advantages, disadvantages and characteristics of each option.

The Effect of the East China Sea Kuroshio Front on the Marine Atmospheric Boundary Layer

Various satellite data,JRA-25(Japan reanalysis of 25 years) reanalyzed data and WRF(Weather Research Forecast) model are used to investigate the in situ effect of the ESKF(East China Sea Kuroshio Front) on the MABL(marine atmospheric boundary layer).The intensity of the ESKF is most robust from January to April in its annual cycle.The local strong surface northerly/northeasterly winds are observed right over the ESKF in January and in April and the wind speeds decrease upward in the MABL.The thermal wind effect that is derived from the baroclinic MABL forced by the strong SST gradient contributes to the strong surface winds to a large degree.The convergence zone existing along the warm flank of the ESKF is stronger in April than in January corresponding to the steeper SST(sea surface temperature) gradient.The collocations of the cloud cover maximum and precipitation maximum are basically consistent with the convergence zone of the wind field.The clouds develop higher(lower) in the warm(cold) flank of the ESKF due to the less(more) stable stratification in the MABL.The lowest clouds are observed in April on the cold flank of the ESKF and over the Yellow Sea due to the existence of the pronounced temperature inversion.The numerical experiments with smoothed SST are consistent with the results from the ovservations.

Large-Scale Traffic Characterization of Chinese Multimedia Messaging Service Using Hadoop

Recently, there have been many mo- bile value-added services in the Chinese mo- bile telecommunication market nowadays. Am- ong them, the characteristics of Multimedia Mes- saging Service （MMS） have not yet been fully understood. In this paper, with the help of a cloud computing platform, we investigated the flow-level charactefistcs of Chinese MMS. All of the experimental data were collected by the TMS equipment deployed in a major node in Sou- them China. The collection time spanned six mo- nths. We performed high-level analysis to show the basic distributions of MMS characteristics. Then, by analysing the detailed MMS features, we determined the distribution of personal MMS, and made a comprehensive comparison between 2G and 3G MMS. Finally, we tried to build a model on the personal MMS inter-arrival time, and we found that the Weibull distribution was optimum.

Contribution to the knowledge of Chinese species of Acanthaleyrodes Takahashi(Hemiptera: Aleyrodidae)

Two species in the genus Acanthaleyrodes Takahashi(Hemiptera: Aleyrodidae) from China, A. callicarpae Takahashi and A. styraci Takahashi are reported in this paper. The diagnosis, distribution, host plant and morphological illustrations of these two species are provided. An identification key to the puparia of Chinese Acanthaleyrodes species is given.