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1.
杨骁 《阿坝师范高等专科学校学报》2010,27(3):60-63,83
针对少数民族地区农民收入水平低的现状,以阿坝州为例,结合相关理论,从影响收入的生产要素、技术及制度三个层面分析制约少数民族地区农民收入增长的因素,得出少数民族地区农民在特有的自然、社会及经济条件下陷于多重低水平均衡状态,制约了其收入增长的结论,并在最后提出短期增强各产要素及技术水平的转换能力与长期逐步改善各变量的低水平现状相结合的政策建议。 相似文献
2.
Nonlinear bending of cantilever incompressible poroelastic beams subjected to a uniform load is investigated with the constraint that fluid flow is only in the axial direction. The governing equations for large deflection of the poroelastic beam are derived from theory of incompressible saturated porous media. Then, nonlinear responses of a cantilever beam with impermeable fixed end and permeable free end are examined with the Galerkin truncation method. The deflections and bending moments of the poroelastie beam and the equivalent couples of the pore fluid pressures are shown in figures. The differences of the results between the large deflection and the small deflection theories are analyzed. It is shown that the results of the large deflection theory are smaller than those of the small deflection theory, and the time needed to approach their stationary states for the large deflection theory is shorter than that for the small deflection theory. 相似文献
3.
Based on the mathematical model of the bending of the incompressible saturated poroelastic beam with axialdiffusion, the quasi-static bendings of the simply supported poroelastic beam subjected to a suddenly applied constant loadwere investigated, and the analytical solutions were obtained for different diffusion conditions of the pore fluid at the beamends. The deflections, the bending moments of the solid skeleton and the equivalent couples of the pore pressures werepresented in figures. It is also shown that the behavior of the saturated poroelastic beams depends closely on the diffusionconditions at the beam ends, especially for the equivalent couples of the pore pressures. It is found that the Mandel-Cryereffect also exists in the bending of the saturated poroelastic beams under specific diffusion conditions at the beam ends. 相似文献
4.
Today more and more people want to get more money. Many people think if they have a lot of money, they can buy whatever they want to and even do whatever they want to. They also think only money can make people happy. Some people even do something wrong i… 相似文献
5.
2016年2月19日，习近平总书记在考察完人民日报社、新华社与中央电视台后，在北京主持召开党的新闻舆论工作座谈会并发表重要讲话。这次讲话对于新闻舆论工作者在党的新闻宣传阵地上坚持马克思主义新闻观，抵制错误的言论与思想，确保意识形态领域内的安全与稳定，有重大意义。 相似文献
6.
蒙古国新鑫有限责任公司乌兰矿尾矿坝在生产过程中出现库水渗漏,被迫停产。为了确定防渗处理方案,给防渗设计提供依据,对现有坝体及坝址进行工程地质调查,分析渗漏原因。经过现场勘察、钻孔取芯、现场试验、坑探等工作,我们对尾矿坝的工程地质状况有了初步认识,对库水渗漏量进行了估算,对库水渗漏的原因有了初步的分析和判断。 相似文献
7.
杨骁 《中学英语园地(高三版)》2005,(10)
Mr Zhang is our English teacher.He is am iddle-aged man with thickglasses.He is talland handsome.There is always a smile on his face.Mr Zhang is good at teaching English and he always tries his best tom ake his lessons lively and interesting.We can easily understand and re-mem ber his lessons.He uses different ways to im prove our abilities in lis-tening,speaking,reading and writing.He often tells us some funny sto-ries.Som etimes he even draws funny pictures on the blackboard and singsbea… 相似文献
8.
本研究使用混合水体指数模型对洞庭湖地区2003年至2013年的水体面积变化进行识别,并使用监督分类方法提取水体进行验证。研究结果表明,2008年洞庭湖地区水体面积最大,2003年次之,2013年水体面积最小。 CIWI模型提取的水体变化趋势与监督分类提取的水体变化趋势一致,但面积明显小于监督分类的结果。使用CIWI水体指数可以有效实现大面积水体的提取。 相似文献
9.
Based on the theory of porous media, the quasi-static and dynamical bending of a cantilever poroelastic beam subjected to a step load at its free end is investigated, and the influences of its permeability on bending deformation is examined.The initial boundary value problems for dynamical and quasi-static responses are solved with the Laplace transform technique,and the deflections, the bending moments of the solid skeleton and the equivalent couples of the pore fluid pressure are shown in figures. It is shown that the dynamical and quasi-static behavior of the saturated poroelastic beam depends closely on the permeability conditions at the beam ends. Under the different permeability conditions, the deflections of the beam may oscillate or not. The Mandel-Cryer effect also exists in liquid-saturated poroelastic beams. 相似文献
10.
I like watching movies very much. I'm always moved by the stories in the movies. Last Sunday I went to Xin Hua Cinema and saw a film called Not One Less. In the film Wei Mingzhi a 13-year-old girl takes care of the village school when the teacher Mr. Gao is away for a month because nobody else can take the job. She has to keep all the students in the classroom. But one day Zhang Huike one of the naughtiest students runs away to the big city. She follows him and brings him ba… 相似文献