非接触IC卡读写器正确读写数据能力的提高

非接触IC卡的应用很普遍,保密性强,但由于操作方法不当等原因易出错。提高非接触IC卡读卡器正确读写数据能力只能从软硬件设计的改进两方面进行。为了从根本上防止刷卡出错,在非接触IC卡读卡器硬件设计上加入红外发射接收电路部分。软件设计上有更多的改进空间,如缩短卡操作的时间,合理使用延时子程序,适当时机的显示及声音提示等。     

非接触IC卡读写器正确读写数据能力的提高

非接触IC卡的应用很普遍,保密性强。但由于操作方法不当等原因易出错。提高非接触IC卡读卡器正确读写数据能力只能从软硬件设计的改进两方面进行。为了从根本上防止人们刷卡出错,在非接触IC卡读卡器硬件设计上加入红外发射接收电路部分。软件设计上有更多的改进空间,如缩短卡操作的时间,合理使用延时子程序,适当时机的显示及声音提示等。     

门禁系统非接触式IC卡读卡器的设计

非接触式IC卡读卡器是非接触式IC卡技术应用的关键之一。文中给出了门禁系统非接触式IC卡读卡器的设计方法，具体阐述了门禁系统非接触式IC卡读卡器的硬件电路设计和软件开发：给出了硬件电路原理图并对其作了详细的阐述，结合实例给出了非接触式IC卡读卡器设计的软件开发方法；简要介绍了门禁系统。     

基于非接触式IC卡门禁系统的设计

目的设计基于非接触式IC卡的门禁系统。方法利用射频识别技术进行了整个系统的设计。结果完成了非接触式IC卡读卡器的硬件和软件设计以及上位机的程序设计。结论非接触式IC卡的门禁系统安全可靠,使用方便。     

非接触式IC卡及其在门禁系统中的应用

介绍了非接触式IC卡和读卡器的功能组成，讨论了非接触式IC卡在门禁系统中的应用，给出了相关硬件、软件的设计思路。     

USB总线的IC卡读卡器设计

提出了一个用USB接口来实现PC机与IC卡读卡器接口的方法,设计了相应的硬件电路、固件程序及Windows设备驱动程序,对比分析了基于USB接口的IC卡读卡器与传统的基于RS232接口IC卡读卡器的不同点,表明USB总线接口传输速度比传统RS232接口快7～8倍.     

一种基于C8051F320的USB通用IC卡读卡器设计

使用通用串行总线(USB)作为IC卡读卡器与计算机的通信接口是目前非常流行的一种设计方式,本文结合新华龙公司的C8051F320芯片的硬件接口电路,从设备端的硬件设计和软件设计两方面,说明了USB通用IC卡读卡器的设计方法,并着重讨论了测试IC卡类型的原理.     

基于非接触式IC卡的移动式车辆感应读卡器的设计

本文针对现有车辆感应读卡器因固定不可动带来的使用不便捷,设计了一种基于非接触式IC卡的移动式车辆感应读卡器,以ATMEL公司的ATmega 16L微处理器、非接触式IC卡、超声波测距和红外定位为核心,可实现驾驶员不必下车即可实现读卡操作的功能。本文详细阐述了移动式车辆感应读卡器的结构和实现,该系统具有智能、便捷、人性化等特点,具有较高的应用和开发价值。     

基于无线通信的非接触式IC卡读卡器设计

给出一种用于考勤系统的非接触式IC卡读卡器的设计及实现方法.采用射频识别技术及无线通信技术,以STM8S103F3P单片机为控制核心,设计了MFRC531读卡模块和Si4432无线收发模块,并详细论述了硬件外围电路相关参数的计算方法及软件实现方法.所设计的读卡器具有可移动性强、安装简单和扩展性好等优点.     

物流园区中非接触式IC卡读卡器软件设计

将非接触式智能卡技术应用于解决物流园区车辆管理问题的方案中,完成了方案中非接触式IC卡读卡器的软件设计及系统的集成.读卡器使用C语言进行程序设计,编译器采用Keil C51 V7.07.软件设计包括主程序,MF RC500的应用程序以及读卡器外围功能程序设计,实现了系统的设计功能.     

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.