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目前国家尚未出台统一的事业单位养老金改革办法和操作规则，事业单位职工养老意识淡薄，事业单位职工养老保险基础薄弱，基层单位多处于等待、观望状态。必须加大事业单位养老金发放社会化宣传力度．尽快制定统一的事业单位养老保险发放政策，改变养老保险的征缴方式，改变事业单位养老金计发办法，多方筹集养老保险基金，建立调剂金制度。 相似文献
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3-D scattering of obliquely incident plane p waves by alluvial valley embedded in layered half-space
The indirect boundary element method(IBEM) was established to solve the problem of 3-D seismic responses of 2-D topographies,by calculating the free-field responses with the direct-stiffness method and simulating the scattering wave fields with the dynamic Green’s functions of moving distributed loads.The proposed method yields accurate results,because the 3-D dynamic stiffness matrixes used are exact and the fictitious moving distributed loads can be acted directly on the interface between the alluvial valley and the layered half-space without singularity.The comparison with the published methods verifies the validity of the proposed method.And the numerical analyses are performed to give some beneficial conclusions.The study shows that 3-D scattering by an alluvial valley is essentially different from the 2-D case,and that the presence of soil layer affects not only the amplitude value of surface displacements but also the distribution of surface displacements. 相似文献
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The indirect boundary element method (IBEM) is used to study the surface motion of an alluvial valley in layered half-space for incident plane P-waves based on Wolf’s theory. Firstly, the free field response can be solved by the direct stiffness method, and the scattering wave response is calculated by Green’s functions of distributed loads acting on inclined lines in a layered half-space. The method is verified by comparing its results with literature and numerical analyses are performed by taking the amplification of incident plane P-waves by an alluvial valley in one soil layer resting on bedrock as an example. The results show that there exist distinct differences between the wave amplification by an alluvial valley embedded in layered half-space and that in homogeneous half-space and there is interaction between the valley and the soil layer. The amplitudes are relatively large when incident frequencies are close to the soil layer’s resonant frequencies. 相似文献
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梁建文 《中学政治教学参考》2012,(6):20-21
教师是课堂教学的"牧人",在教学中发挥着无可替代的主导性作用。如果教师仅仅做到对学生"授之以鱼",那么这个教师就只是"教书匠";只有做到对学生"授之以渔"的教师,才是真正成功的教育工作者。如 相似文献
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梁建文 《内蒙古科技与经济》2007,(23):120-121
网络技术的飞速发展使读者的阅读习惯,对传统阅读的打击是显而易见的.面临新的形势图书馆作为图书的收藏与流通机构,普及和提高国民的阅读水平、拓展图书馆生长空间是其应有的职责,本文从了解读者的阅读特性、阅读心理、从而提高图书馆员的服务意识和服务水平、加大阅读指导宣传力度为读者提供各种方便等方面进行了探讨. 相似文献
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在多年从事公安院校图书馆期刊管理工作的基础上,对公安院校图书馆的期刊管理和服务创新进行了总结和思考,文章主要就期刊采访、科学管理和合理利用、为读者提供优质服务、提高期刊管理人员的素质等方面进行了探讨和分析。参考文献2。 相似文献
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The indirect boundary element method (IBEM) is used to study the surface motion of an alluvial valley in layered half-space for incident plane P-waves based on Wolf’s theory. Firstly, the free field response can be solved by the direct stiffness method, and the scattering wave response is calculated by Green’s functions of distributed loads acting on inclined lines in a layered half-space. The method is verified by comparing its results with literature and numerical analyses are performed by taking the ampl... 相似文献
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梁建文 《天津大学学报(英文版)》1995,(1)
通过求解半无限空间表面二维半圆截面回填河谷对ＳＨ地震波的散射和士与管线的动力相互作用，对穿越回填河谷及河床管线进行了动力分析。模型虽简单，但定性地解释了这两类震害现象。结果表明，回填河谷对管线的动力性状有巨大影响，该影响取决于地震波的频率、波长和河谷宽度等因素；管线的破坏不仅会发生在回填土的交界面上，还会出现在河谷回填土的中部；如果管线穿越河床，管线的破坏将发生在与河谷底部相应的地方。 相似文献
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