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31.
《中国航空学报》2023,36(1):413-422
A series of non-covalently functionalized molybdenum disulfide-silica (f-MoS2-SiO2) nanocomposites was prepared by an in-situ assembled method and used to fabricate the oriented molybdenum disulfide-SiO2/Hydrogenated Nitrile Butadiene Rubber (f-MoS2-SiO2/HNBR) composites. The characterization results show the synergistic dispersion between the functionalized molybdenum disulfide (f-MoS2) nanosheets and SiO2 nanoparticles. The addition of f-MoS2 nanosheets can improve the dispersion of fillers in the rubber matrix and weaken the filler network. The non-covalently functionalization improves the interface interaction between f-MoS2 nanosheets and the rubber matrix. Furthermore, the tensile strength of f-MoS2-SiO2/HNBR is 65.9% higher than that of SiO2/HNBR by adding 1.0wt% of f-MoS2. At the same time, the dielectric constant of f-MoS2-SiO2/HNBR is increased by 23.7% compared to SiO2/HNBR due to the micro-capacitor structure of parallel f-MoS2 nanosheets in the rubber matrix. Our work provides new ideas for the development of high-performance elastomer materials. 相似文献
32.
“六性”、“七化”与“一品”——全国高职高专学报走向再探索 总被引:3,自引:0,他引:3
潘世东 《西安航空技术高等专科学校学报》2008,26(6):70-73
通过分析高职高专学报生存发展的现状和面临的主要问题,提出了高职高专学报的宗旨定位、作者定位、读者定位和特色定位;结合学报学会组织的功能和使命及高职高专学报的发展方向,归结出了“六性”、“七化”与“一品”的奋斗目标。 相似文献
33.
高职院校创业文化价值取向及其实现途径 总被引:1,自引:0,他引:1
卢红学 《西安航空技术高等专科学校学报》2008,26(4):16-18
从分析创业文化的内涵着手,重点论述了高职院校培育创业文化的价值取向:突显了“发展”的主题;体现“人本”的理念;指引高层次人力资源的培育途径三个方面。指出了高职院校培育创业文化的价值实现途径。 相似文献
34.
科技成果推广价值评价指标 总被引:8,自引:0,他引:8
本文详细介绍了影响科技成果推广价值的技术因素、市场因素和推广因素,分析了影响科技成果推广价值的12项评价指标。 相似文献
35.
文章针对一景大小的卫星三线阵CCD影像,采用二次多项式拟合外方位元素模型,与国外的定向片法模型进行平差算法对比.对一景大小的模拟数据进行了试验,结果表明基于二次多项式拟合外方位元素模型的平差方法有效的提高了影像的平面精度与高程精度,与定向片法模型相比,该算法简单,结果同样满足1∶5万摄影测量的要求. 相似文献
36.
刘剑坤 《西安航空技术高等专科学校学报》2003,21(2):8-9,29
本文对管理者不同的道德观及其影响进行分析 ,提出管理者要加强自身的道德修养并以其来影响下属 ,才能提高组织绩效 ;用制度规范人性 ,用利益引导诚信 ,才能不断提升组织的道德水准以适应市场经济的要求 相似文献
37.
38.
《中国航空学报》2020,33(12):3460-3468
The YSZ coatings are prepared by the plasma spray-physical vapor deposition (PS-PVD) technology based on a specific experimental design. The structure, thickness and growth angle of YSZ coatings on the entire circumferential surface of the cylindrical sample are studied. The results indicated that the structure, thickness and deflection growth angle of YSZ coatings are related to the orientation of deposition location. The numerical simulation of the multiphase mixed fluid near the substrate is carried out and the deposition regularity and mechanism of YSZ coatings prepared by PS-PVD is deduced. The growth rate is related to the local characteristics of the plasma flow field, and is directly proportional to the field pressure and inversely proportional to the field velocity. The growth angle of the coating is generally affected by the flow direction of the plasma jet. Especially, the normal component of velocity vector, Vnorm, mainly affects the speed at which the coating grows vertically upwards. The tangential component of velocity vector, Vtan, determines the degree that the coating growth direction deviates from the vertical direction. When Vtan ≠ 0, the coating forms a fine column with a certain deflection angle and finally develops into an oblique columnar structure. 相似文献
39.
Víctor Puente Marta Folgueira 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2019,63(5):1792-1802
A study of the uncertainty propagation in ITRS/GCRS transformation is presented in this work. General law of propagation of variances is applied to the ITRS/GCRS transformation matrix, deriving the analytical expressions to compute GCRS position uncertainty. This evaluation is based on EOP uncertainties provided by IERS long-term series and formal uncertainties of ITRS-compatible coordinates. Numerical results for the period 1998–2016 are shown and discussed for ITRS positions in different altitudes and latitudes, providing graphical and numerical insights of the mapping of EOP uncertainties to transformed coordinates.Eventually, an analysis of short-term evolution of the Celestial Intermediate Pole coordinates in the GCRS provided by the IAU2006/2000A precession-nutation model is carried out, in order to assess the feasibility to potentially broadcast these parameters in GNSS navigation message. This approach would facilitate the dissemination of terrestrial-celestial transformation parameters for real time users, given that polar motion and UT1-UTC are already foreseen in GPS interface specification. The results presented in this work confirm the feasibility of this idea. 相似文献
40.
潘媛 《西安航空技术高等专科学校学报》2009,27(4)
随着经济全球化的发展,企业环境变得越来越复杂,所面临的风险也日趋增加,风险管理受到前所未有的重视,对于内部审计参与企业风险管理也成为了一种趋势,通过分析内部审计参与企业风险管理的动因,揭示其必要性,并且得出内部审计参与企业风险管理的具体措施. 相似文献