浅析汽车维修专业发展趋势

汽车维修业伴随着汽车的发展而成长壮大。本文从汽车电子技术发展形势分析出发,分析了现代汽车维修业的新形势;阐述了汽车维修人员高素质化是汽车维修技术与对象的电子化,汽车维修设备的现代化和汽车维修管理的电脑化网络化的要求;指出汽车维修专业应向电子电控化发展,汽车专业课程教学必走项目化的道路,同时对汽车维修人才的培养提出了综合化的要求。     

汽车传感器技术的应用研究

＂没有传感器技术就没有现代汽车＂,汽车传感器作为汽车电子控制系统的信息源,是汽车电子控制系统的关键部件,也是汽车电子技术领域研究的核心内容之一。本文简要介绍了汽车传感器的种类,论述了汽车传感器的应用领域与重要性。并就我国发展汽车传感器产业的途径做出了探讨。     

车辆维修的分类及其主要性能要求

历经了40多年的汽车工业革命,中国汽车已经已经有了长足的发展,已经初步形成了完整地汽车产品生产和汽车生产布局。在中国加入WTO和世贸组织以后,国产汽车更是得到了进一步发展,使得汽车保有量和产量得到很大提高,使得汽车占有率超过汽车市场的95%。目前,汽车已成为大众普遍使用的交通工具,因此,汽车维修费用和日常保养费用成为大众关注的焦点。本文通过对汽车的结构原理和维修理论,对汽车修理、汽车零件、维修资费、汽车性能等方面叙述,与论文的主体相结合。     

汽车视野安全的研究与进展

汽车视野是汽车主动安全的主要内容之一,对汽车的行车安全具有非常重要的作用．本文首先介绍了汽车工业发达国家以及我国在汽车视野方面的最新研究动态与技术现状．作为重点,从多种不同的角度详细地总结了改进汽车视野安全性能的主要对策和措施,同时考虑了在改进汽车视野时应该注意与其它汽车安全项目相互协调．然后,对汽车视野方面今后的发展趋势进行了展望．最后,笔者比较了美、日、欧三大汽车安全法规在视野方面的不同,并指出我国汽车安全法规的特点和不足．     

汽车电子技术的应用与发展研究

随着汽车工业与电子工业的不断发展,在现代汽车上,电子技术的应用越来越广泛,汽车电子技术的应用极大地改善了汽车在节能、安全、舒适等方面的性能。本文介绍了汽车电子技术的应用与发展历程,全面分析了汽车电子技术的应用现状,并在此基础上,总结了汽车电子技术的发展趋势与方向。     

中国汽车市场需求及其弹性和预测分析

使用中国汽车和其它有关月度经济数据,首先对目前中国的汽车存量是否对汽车市场需求产生显著的调节作用进行了分析,其次建立了中国汽车市场月度需求预测回归和时间序列模型,最后分析了汽车月度需求收入和价格弹性;研究表明目前中国汽车存量还不能对汽车市场需求产生显著的调节作用,消费者滞后2期的收入和当期汽车价格对汽车月度需求有显著影响,汽车月度需求的价格弹性大于滞后2期的收入弹性;最后,针对结论提出了相关建议.     

铝合金汽车板性能及其应用

深入讨论了预处理工艺的影响并说明了该工艺在保证铝合金汽车板使用性能的重要性。介绍了铝合金汽车板在汽车上的典型应用。基于笔者认识和目前的研究进展,提出了汽车用铝合金汽车板的重点研发内容,降低成本和价格,做好应用研究是扩大铝合金汽车板在汽车上应用的重要工作。     

燃料电池轿车可靠性试验方法及评价体系研究

介绍了汽车可靠性工程循环,总结了传统汽车可靠性试验方法和评价指标,在分析燃料电池汽车自身特点的基础上,借鉴传统汽车评价方法建立了燃料电池汽车可靠性试验评价方法。     

汽车维修人员素质评估模型的建立及应用

通过对汽车维修人员素质现状的调查与分析,探讨了影响汽车维修人员素质的相关因素,确立了汽车维修人员素质评价的指标体系及权重,并构建了评价汽车维修业人员素质的综合评价体系,结合实例分析验证了评价体系的可行性。旨在为提高汽车维修人员素质,加强对汽车维修人员管理。     

汽车费用控制的实践与思考

为控制汽车费用,合理安排支出,对汽车费用构成进行了分析,阐述了控制汽车费用的思路,介绍了加强汽车驾驶、检修管理及对汽车费用细化分解、分别制定定额进行量化考核的措施和实践效果。     

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.     

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.     

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.