混凝土结构的腐蚀控制技术研究

影响混凝土结构耐久性的主要原因是环境中腐蚀性介质对结构所造成的损伤，这种损伤是由于腐蚀性介质与结构材料之间发生复杂的化学及电化学反应而形成的。基于混凝土结构中钢筋锈蚀的电化学机理，考虑外部能量的输入，分别定义了被动和主动结构腐蚀控制，简要分析了工程结构中常用的被动腐蚀控制技术措施，并对主动腐蚀控制技术如阴极保护法、电化学碱化法以及电化学除氯法等的杌理及工程应用进行了归纳研究，为实际工程应用提供了参考和依据。     

智能虚拟人Agent行为建模与运动控制

针对虚拟环境中人的行为分析,研究了井下智能虚拟人Agent的行为建模和运动控制技术.基于人工智能/人工生命方法,构建了集成感知、运动、行为、认知、内部属性等组件的井下智能虚拟人Agent的体系结构;研究了基于简化包容结构的智能虚拟人Agent行为控制模型及其行为选择机制,并基于A*算法,实现了智能虚拟人Agent的路径规划;初步构建了井下虚拟人Agent行为仿真系统,实现了虚拟人Agent的复杂行为控制,为进一步构建具有行为真实感的井下虚拟环境提供技术参考.     

工程机械智能信息化监测控制技术的应用研究与发展

在对CAN总线技术、蓝牙技术和GPS卫星定位技术分析的基础上，结合工程机械状态监测控制技术的具体特点，介绍了基于现代信息技术的工程机械智能监测控制系统的应用，提高工程机械的智能化监测和控制水平。     

基于GPRS Modem与GPRS的智能汽车防盗系统

基于GPRS移动通信业务的汽车智能防盗监测系统是利用日益完善的GPRS全球移动通讯网络和单片机控制技术的一种全新汽车防盗装置。介绍了一种基于GPRSModem与GPRS的智能汽车防盗系统及其结构组成和功能。     

基于双DSP的反直升机智能雷弹系统设计

针对具有更快飞行速度的新一代武装直升机投入使用,重新设计了反直升机智能雷弹的总体结构。智能雷弹采用模块化设计,预警模块、通信模块、战斗部和随动机构由单片机控制,声探测与数据处理模块由两片DSP控制。为满足智能雷弹的低功耗要求,完成了预警模块的硬件设计;为满足反直升机智能雷弹实时性能的要求,以两片高性能浮点DSP和CPLD为核心,完成了声探测与数据处理模块的硬件设计,以及各个模块之间数据接口设计。通过仿真实验表明,基于双DSP的反直升机智能雷弹满足实时性和定位精度的要求。     

智能结构的研究现状及其前景展望

智能结构是指在基体结构中使用智能材料做为传感和驱动元件的新型结构,它不仅具有自感知、自适应、自诊断和自修复的优点,而且还具有集传感和驱动一体化的优越特性。近年来,智能结构振动控制技术已被广泛应用到军事、机械、医学、等领域。本文介绍了智能结构的概况,对目前智能结构在振动控制领域的应用现状进行了回顾,最后指出了今后需要解决的主要问题和发展方向。     

智能控制在跳汰机排料中的应用

跳汰机排料控制是跳汰机实现单机自动化的关键,引入智能控制技术解决传统PID控制不能解决的问题。本文介绍了实现跳汰机排料控制系统智能化的几种具体结构形式。     

先进过程控制（APC）技术介绍与比较

综合大量中外文献的基础上，对过程模型进行分类讨论，着重论述和比较了基于模型的控制－内膜控制、模型预测控制、自适应控制以及智能控制中典型先进控制技术的概念、结构、特征和优点，最后给出了研究的前景，。     

配电自动化技术剖析

通过对配电自动化技术的通信方式、信息流程、馈线自动化的实现方式、基于主站的自愈控制技术等方面的分析,提出了分布式智能和网络式保护相结合的控制为主、集中式控制为辅的馈线自动化方案。     

二维超声阵列换能器声束控制技术的仿真研究

超声波束特性直接影响超声图像的清晰度和对比度。二维超声换能器阵列结构岛数字声束控制技术相结合,是现代超声成像系统发展的重要方向。以二维平面矩形超声换能器阵列和二维圆环超声换能器阵列为对象,利甩仿真实验分别测试幕声束聚焦、声束激励、幅度变迹等技术对声束的控制性能。结果表明,灵活的声束控制技术组合可似有效提高二维超声换能器阵列的声束性能,突出声束主瓣,降低旁瓣与栅瓣的影响。     

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.     

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.     

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.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.