海淀园诞生“龙芯2号”

我国首款64位高性能通用CPU(中央处理器)芯片——“龙芯2号”近日在人民大会堂正式发布。至此，我国自主研发的通用CPU芯片最高频率，从“龙芯1号”的266兆赫兹提高到500兆赫兹．达到“奔腾3”的水平，性能上比“龙芯1号”提高了10倍。     

中国芯片发展现状(七)

芯片是各种电子设备的“脑细胞”，承担着运算和存储的功能，是电子设备中最重要的部分。介绍了近年来我国芯片生产线的建设情况，重点对数字电视核心技术信源编码的高清晰视频解码芯片“凤芯1号”的开发研制情况进行了综述。     

中国芯片发展现状（四）

阐述了我国芯片产业的现状，介绍了我国自行研制开发的光子芯片、“神芯”芯片、“华厦网芯”、IC卡芯片、3G手机芯片的用途、性能和发展前景。     

MMU在TD-SCDMA基带专用芯片中的应用

介绍了存储管理单元在TD-SCDMA基带专用芯片“通芯一号”中的工作原理,包括地址转换及高速缓存的控制.在存储管理单元应用实例中,合理地对“通芯一号”物理存储空间进行了重映射,而且成功启动了高速缓存,使“通芯一号”的运行效率大幅度提升,更容易满足3G业务的需求.     

MMU在TD-SCDMA基带专用芯片中的应用 

介绍了存储管理单元在TDSCDMA基带专用芯片“通芯一号”中的工作原理，包括地址转换及高速缓存的控制。在存储管理单元应用实例中，合理地对“通芯一号”物理存储空间进行了重映射，而且成功启动了高速缓存，使“通芯一号”的运行效率大幅度提升，更容易满足3G业务的需求。     

“中视一号”数字电视地面传输产业化国产芯片

“中视一号”的成功填补了数字电视地面传输芯片完全国产化和产业化的空白。技术全面达到同类产品的国际先进水平。实现了我国百万门级专用集复旦大学的“中视一号”专用芯片是首块由国内自主设计和制造、具有完全自主知识产权的数字电视地面传输产业化芯片。该芯片集成了70多块存储器、200多万逻辑门。芯片设计复杂度极高。“中视一号”使用的DMB-T传输体制；在一定程度上会形成阻挡外国产品进入中国的壁垒。     

纵横资讯

我国芯片技术获重大突破上海交大研制成功高性能DSP芯片“汉芯一号”DSP（即数字信号微处理器）与CPU一起被公认为芯片工业的两大核心技术。上海交大近日在DSP研究领域取得重要进展，研制成功国内首个完全具有自主知识产权的“汉芯一号”高性能DSP芯片。据专家认定，“汉芯一号”及其相关设计和应用开发平台属于国内首创，达到了国际先进水平。使用国际先进的０．１８微米半导体工艺设计的“汉芯一号”１６位，具有３２位运算处理内核，运算能力达到每秒２亿次指令以上，时钟主频达到了２００MHz。与“汉芯一号”同时诞生的相关设计…     

探“芯”之路很艰难也很幸福

从2001年3月11日,中国首枚具有自主知识产权、百万门超大规模数字多媒体芯片“星光一号”在中星微面世,到2003年10月“星光五号”面世,确立了中国芯片研究在世界同类芯片市场的绝对领先地位,面对荣誉和成就,邓中翰说：     

单片机接口技术：单片机与DTMF收发器接口

MT8880DTMF收号器芯片集收发信号于一体，功能多、性能可靠。介绍了其工作原理及其与微处理器的接口技术。     

单片机接口技术——单片机与DTMF收发器接口

MT8880DTMF收号器芯片集收发信号于一体,功能多、性能可靠.介绍了其工作原理及其与微处理器的接口技术.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.