横观各向同性成层地基中Love波弥散特性

本文利用有限单元法及解析法推导了横观各向同性土中Ｌｏｖｅ面波的弥散曲线及位移分布的计算公式，对横观各向同性地基中Ｌｏｖｅ面波的弥散特性及位移分布规律进行了讨论，并与各向同性地基Ｌｏｖｅ面波弥散曲线进行了比较。     

努力构建五种环境提升职工幸福指数

幸福指数就是衡量人们幸福感的标准。随着社会的发展,许多国家把民众幸福指数当成与经济指标同等重要的指标用来监控经济社会运行态势,了解民众的生活满意度。作为石油会战企业要提升职工的幸福指数,应着力构建五个环境：1、打造温馨美好的家园环境,让职工生活过得满意;2、打造和谐平安的油区环境,让职工日子过得踏实;3、打造公平公正的...     

对高校大学生爱情观教育创新的思考

爱情观教育是当前高校德育中亟待加强的重要方面。对高校大学生实施爱情观教育必须在理念、内容和方法等方面加以创新,才能提高其实效性,从而引导大学生树立正确的爱情观,促进大学生的健康发展与成才。     

适合于液相检测的乐甫波传感器

乐甫波（Ｌove wave)是声表面波的一种，它是在沉淀于压电基片表面的薄层声波导中传播的表面剪切横波。论述了基片为ＳＴ切压电石英晶体、声波导层分别为聚甲基丙烯酸甲酯（PMMA）和熔融石英（SiO2)的乐甫波器件的制作。通过测量器件的传输参数S21和插损，比较了瑞利波器件和不同声波导层构成的乐甫波器件在气相和液相的特性，证明了乐甫波传感器适合于液相检测而瑞利波传感器不适合，而且，SiO2是构成乐甫波器件声波导层的更合适的材料。     

西山美墅馆

西山美墅馆作为北京西山区域内高档别墅项目的代表，不仅与西山自然环境有机呼应，更传承了西山深厚的人文历史底蕴。     

Ottoman and Turkish Orientalism

Since the early decades of the 19th century, Turkey has undergone successive programmes of modernisation that have closely identified reform with Westernisation and its implied European ‘success and superiority’ over Turkish culture. Here Edhem Eldem reveals both the external and internal dynamic of Turkish Orientalism, which has proved such a complex multilayered process with an enduring influence on how Turkish society and elites view themselves today. Copyright © 2010 John Wiley & Sons, Ltd.     

Best of Both Worlds: Lamenting Our Path to the Future

After a period of decline, the Alpine valley of Andermatt in Switzerland is undergoing major development as a holiday resort by an Egyptian real estate billionaire. A documentary film on the process, by a young Swiss filmmaker, highlights the ambivalent relationship between global corporatist efforts to ‘rescue’ struggling rural areas, and the local communities concerned. Stephan Petermann , who is researching the future of the countryside for architect Rem Koolhaas's think tank AMO, gives an account of it.     

Love波传感器的性能分析与实验

为了制作高灵敏度Love波传感器,分析了Love波在ST-石英和二氧化硅薄膜分层结构中的传播特性,并对该分层结构进行了相关的理论推导和计算.首先,从声学动力学方程出发,分析求解了该分层结构的波动方程,得到了在该分层结构的色散关系及位移表达式.基于得到的解析表达式分析了波结构,绘制了特性曲线,得到了Love波在该结构中的...     

现代超级计算机与超大规模集成电路产业链自动化将形成BACNet+HBES+CC-Links+eFactory高技术新市场的分析——3.地震波的灾前分量实时分析-判定-触发核电安全控制Gbps FCS

本文基于中国科学院与国外的卫星遥感数据,用地震波理论,分析中国与英国地震台分别测到的2006印尼与2011日本大地震波波形,为工程研发提供科学基础。由此建议以Gbps高速CC-LinkIE,在大地震灾前的秒级时段内,自动对地震波的灾前非破坏性先导分量,进行实时时域数字化分析-判选-触发,在灾前关闭连锁核反应,同时启动核电厂自动测控DCS系统中各级FCS现场总线中的SIL4安全措施系统。     

An experimental study of Love-wave acoustic sensors operating in liquids

It has been shown that properly designed Love-wave acoustic sensors are very promising for sensing in gaseous and liquid environments because of their high sensitivity. Since Love-wave devices do not incur a radiative loss when used in a liquid, they have many potential applications in biosensing. We have successfully manufactured a range of 40 μm wavelength Love-wave devices based on SiO₂/ST-quartz, with the SiO₂ thickness ranging from 0 to 7.3 μm. The relationship of the mass-loading sensitivity to the thickness of the SiO₂ layer has been obtained experimentally. High sensitivity (≥ 300 cm⁻² g⁻¹) is achieved at an SiO₂ thickness between 3.5 and 6.5 μm. The Love-wave oscillators have operated efficiently in various liquids with excellent stability and low noise. In this paper, we report the experimental results for the devices operating in various liquids. The mass sensitivity, insertion loss, oscillation frequency stability, noise level, liquid viscous loading and acoustoelectric coupling have been studied. The influence of the thickness of the SiO₂ layer on some of these properties has also been investigated.