考虑各向异性的土工结构物动力分析

本文首先用共振柱研究小应变动剪切模量的各向异性问题,然后阐述了在土工结构动力分析中如何考虑土动力变形特性的各向异性,最后给出了考虑土动力变形特性各向异性动力分析的实例计算结果,并与通常假定土动力变形特性为各向同性的动力分析的结果进行比较.计算结果表明:对于具有很强各向异性的土工结构物和地基,当需要考虑垂直向振动时目前所用把土动力变形特性假定成各向同性方法得到的结果是偏于不安全的.     

软件系统设计中的模块化思想和技术

本文回顾了设计大型数据处理系统中广泛应用的结构化设计(SD)方法、结构化分析(SA)及结构化程序设计(SP),阐明控制问题复杂性的抽象和分解思想、模块特性、划分模块的原则和评价模块质量标准及模块独立性概念。     

四斜A/D转换系统动态问题的研究

在高准确度和高分辨力的四斜 A/D 转换中,只注意系统部件的静态特性已远远不能满足要求。本文提出并分析了四斜 A/D 转换系统的动态问题。把这一分析用于 DO-13 DVM 中的内控逻辑和积分器--第一检零器系统获得了成功。     

印象主义思潮在音乐中的表现特征

19世纪后期,随着自然主义文学、象征主义诗歌、印象主义绘画的诞生,印象主义音乐也随之诞生。这些文学艺术流派对音乐的影响是复杂的,多方面的,因而,也使印象主义在音乐创作中显现出比较复杂的特征和表现形态。     

枣步曲的生物特性及预测初探

文章对枣树害虫枣步曲进行了研究，经过试验观察，对枣步曲的生物学特性、发生年变化主导因子及预测进行了初探。     

高州水库库区生态环境与经济的协调发展

从高州水库的作用及其库区的自然经济特点出发,分析了库区生态系统的特征,并进一步提出了促进高州水库库区生态与经济系统发展的对策。     

Control of coupling among three major factors for formation of high-efficiency gas reservoir A case study on the oolitic beach gas reservoir in Feixianguan Formation in the northeast Sichuan Basin

Through a case study of the high-efficiency gas reservoir in Feixianguan Formation in the northeast Sichuan Basin, quantitative and semi-quantitative analyses of key elements such as hydrocarbon generation, migration and accumulation, and reservoir evolution as well as their interplay in the critical moment of reservoir formation controlled by the energy field were carried out, by means of numerical modeling of the energy field. It was found that the climax time for Permian hydrocarbon generation was Late Triassic-Early Jurassic and accumulation of oil and gas has resulted in large-scale paleoreservoirs in paleostructural traps in Feixianguan Formation, a process facilitated by fractures connecting the sources. The paleoreservoirs have been turned into high-efficiency gas kitchens due to pyrolysis, which resulted from deep burial at a temperature of 170-210℃ as induced by tremendously thick sedimentation in the foreland basin of Daba Mountain in Late Jurassic-Cretaceous period. Meanwhile, abundant acid gas like H2S produced from thermo-chemical sulfate reduction （TSR） at high temperatures leads to extensive dissolution of dolostone in the paleoreservoirs, which may in turn result in modification of the reservoirs and preservation of the reservoir rock porosity. The present distribution of gas reservoirs was ultimately determined in the processes of adjustment, cooling and decompression of the paleoreservoirs resulting from intense deformation in the front of Daba Mountain during the Himalayan orogeny.     

民族传统体育简论

整合概念，对民族传统体育的概念、所包含的内容，特点、以及国际形式下的发展情况进行概述，介绍了民族传统体育文化的整体概况。     

社会科学研究的性质、特点及其目标刍议

社会科学研究肩负着提升国家软实力的重要任务。为了完成这一历史性任务，需要从基础理论层次认识社会科学与自然科学的关系、研究特点及其价值追求。