During the period from the end of 1950s to the early 1960s, a series of engineering disasters of rock mass occurred one after another, for example, in December 1959, the foundation of the Malpasset concrete arch dam in France failed and resulted in a flood and about 450 people were killed ; in October 1963, a landslide of upstream of the reservoir of Vajont dam in Italy generated wave of 100 meters overtopped the dam and killed about 2500 people of the downstream of the dam; in 1960, a coal mine in South Mriea collapsed with the loss of 432 lives; in our country, several mines, such as Stannary Mining Bureau, Pangushan tungsten mine, Dajishan tungsten mine were mined in open stopping method, generated early or late many dilapidations of large-scale rock mass. These disasters aroused the galactic attention of people of rock engineering world and they joined in the study of rock mass mechanics, making rock mass mechanics effectively developed, and for
During the period from the end of 1950s to the early 1960s, a series of engineering disasters of rock mass occurred one after another, for example, in December 1959, the foundation of the Malpasset concrete arch dam in France failed and resulted in a flood and about 450 people were killed ; in October 1963, a landslide of upstream of the reservoir of Vajont dam in Italy generated wave of 100 meters overtopped the dam and killed about 2500 people of the downstream of the dam; in 1960, a coal mine in South Mriea collapsed with the loss of 432 lives; in our country, several mines, such as Stannary Mining Bureau, Pangushan tungsten mine, Dajishan tungsten mine were mined in open stopping method, generated early or late many dilapidations of large-scale rock mass. These disasters aroused the galactic attention of people of rock engineering world and they joined in the study of rock mass mechanics, making rock mass mechanics effectively d
本研究成果以艾略特一生的经历、观点和作品(包括诗歌、戏剧和文学批评)为基础,对诗人作了一个综合性的研究。全书从艾略特的个人经历出发,阐述他的诗歌和戏剧的特殊意义。本书适合英美文学研究者参考学习。
《转化:提升网站流量和转化率的技巧》网站设计优化领域的代表性著作,资深网站设计师20余年工作经验和实验成果结晶,世界著名互联网营销专家杜雷顿·勃德和肯·麦卡锡鼎力。作者结合自己20多年的工作经验,通过对几十个网站的设计进行不断地改善和优化,系统总结出了有效提升网站流量和转化率的方法和技巧。 《转化:提升网站流量和转化率的技巧》分为两部分,共11章。部分(第1~5章)介绍如何吸引访客,提升流量。第1章提出成功运营网站的方法、常见设计误区及特点,以及定位市场的网站创建模型。第2章解密搜索引擎的工作机制、优化基本原理和增加网站的曝光度技巧。第3章介绍拓宽视角,扩大网站信息范围和影响的技巧。第4章引入“意识阶梯”模型来进行市场可视化、定位新类型的潜在顾客,带来初步商机。第5章结合8个“意识阶梯”应用实
基于Agent的建模与仿真方法,能够将复杂系统中个体的微观行为与系统的宏观“涌现性”有机地结合起来,是一种研究复杂系统与复杂性的有效方法。将基于Agent的方法用于儿战建模与仿真,必将使人们更深入地理解战争的过程,洞察战争的本质。 作者Andrew Ilachinski博士在美国海军分析中心(A)工作多年,被誉为“军事复杂性理论研究之父”。本书介绍了作者在如何将复杂系统理论应用于对战争基本进程的理解方面所取得的成果。