景观设计中的蒙太奇表现

蒙太奇理论对景观设计的指导与推动作用,因其鲜明的实用性和优越性而日益受到重视.通过对若干景观设计作品的分析,探讨了景观设计中的蒙太奇手法表现.同时对比蒙太奇电影风格,归纳了蒙太奇语汇在景观设计实践中的应用.     

威信凹陷页岩气成藏条件分析与有利区优选

根据页岩气区域地质调查研究、钻探和地震勘探成果,研究滇黔北坳陷威信凹陷页岩气成藏条件,优选页岩气勘探“甜点”。寒武系牛蹄塘组和志留系龙马溪组黑色页岩是威信凹陷页岩气两套重点勘探评价层系,单层厚度达50 m以上,有机质丰度高,具有低孔、低渗和富硅质特征,具备形成页岩气藏的有利地质条件并易于后期储集层压裂改造。上覆碎屑岩盖层、无通天断层、浅层整体封闭3大因素并存利于页岩气藏保存。岩心解吸显示页岩气成分以甲烷为主,页岩气含量随保存条件变好、页岩TOC丰度增大和地层压力加大而增加。页岩气勘探甜点综合评价优选认为,凹陷北部的筠连—罗布地区为龙马溪组和牛蹄塘组页岩气目的层叠合的最有利甜点勘探区,中部的花坭—威信地区为牛蹄塘组页岩气有利甜点区。建议重视下石炭统旧司组、上二叠统乐平组的页岩气勘探评价。图7表3参14     

煤层气选区评价方法探讨——以准噶尔盆地南缘为例

煤层气选区评价历来是煤层气勘探的一个重要环节,其中评价方法的选择关系到能否准确命中目标靶区,近年来的选区评价方法从定性评价逐渐发展为定量评价。以准噶尔盆地南缘为评价区,从定性—半定量—定量评价的思路方法着手,首先选取了典型的5种评价方法,系统地论述了其在煤层气评价选区中的利弊,发现定性评价方法仍有着其广泛运用的空间,虽然现有的定量评价方法进一步降低了主观因素影响,但这5种评价方法均不同程度地存在着主观性、经验性判断。在对这5种方法进行异同点总结的基础之上,笔者进一步引进了主成分分析法这一定量评价方法,避免了主观因素影响,优选出四工河—大黄山区段为有利区段,与前述5种方法结果相同,表明主成分分析法运用于煤层气选区评价是合理可靠的,完全避免了主观因素的影响成为其选区评价的最大优点。在综合分析了各评价方法的优缺点之后,提倡运用初步定性判断—定量评价研究—定性评价验证的思路来进行煤层气的选区评价。     

Approach to designing bribery-free and coercion-free electronic voting scheme

Electronic voting has been in development for more than 20 years, during which it has produced outstanding results both in theory and in practice. However, bribery and coercion remain an open problem, as there is still no suitable manner to prevent or fight them. Publications emphasizing practicality has not been able to achieve effective protection, probably due to their overtly simple protection method, while publications emphasizing theories are difficult to put into practice due to the complicated protection method devised by them. Thus, how to design a scheme that can flawlessly prevent problems of bribery and coercion as well as put into practice easily becomes a significant issue. In this paper, we suggest that designers apply two indispensable design components, invisible channel and biometrics receipts, to design a prevention e-voting scheme, and also to introduce several feasible technology to help with its implementation. Followingly, a prevention electronic voting scheme that matches our ideal is proposed. We expect this study to arouse the interest of more researchers regarding the subject.     

安全区代表工作思路探讨

从安全区代表的定义出发，对安全区的定义、安全区代表的产生、安全区代表的权利、安全区代表与安全员的联系与区别进行了分析，对安全区代表的人数设置以及任职条件进行了探讨。     

Changes in racial identity among African American college students following the election of Barack Obama.

The current study considered the influence of the 2008 presidential election on the racial identity of African American college students (Mage = 19.3 years; 26.3% male). The design of the study consisted of 2 components: longitudinal and daily. The longitudinal component assessed 3 dimensions of racial identity (centrality, private regard, and public regard) 2 weeks before and 5 months after the election, and the daily diary component assessed racial identity and identity exploration on the days immediately before and after the election. Daily items measuring identity exploration focused on how much individuals thought about issues relating to their race. Analyses considered the immediate effects of the election on identity exploration and the extent to which changes in exploration were shaped by racial identity measured prior to the election. We also considered immediate and longer term changes in racial identity following the election and the extent to which longer term changes were conditioned by identity exploration. Findings suggest that the election served as an “encounter” experience (Cross, 1991, 1995, pp. 60–61), which led to increases in identity exploration. Moreover, analyses confirmed that changes in identity exploration were most pronounced among those with higher levels of racial centrality. Results also suggest that the election had both an immediate and a longer term influence on racial identity, which in some instances was conditioned by identity exploration. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

美国政治报道中的一些概念和常用语

本文结合具体的实例,从美国总统竞选报道与其他一些政治概念和相关知识两个方面,介绍了一些美国政治报道中的概念和常用语,特别是一些人们不易了解确切意思的政治俚语与俗语,对人们理解国外政治报道有一定的帮助作用。     

基于跳频通信的带通滤波器

在无线通信中使用跳频技术是军事通信中最主要的抗干扰手段之一,而如果系统中使用合适的中心频率可以快速跟踪跳频变化的带通滤波器将可以明显改善系统的抗干扰性能.介绍了一种用硅玻璃键合工艺制作的微型梁式可变电容器,设计并制作了由MEMS工艺实现的微型的静电驱动的可变电容器件,用这种方法制作的电容器件具有良好的线性、较小的滞后和稳定的工作特性.设计了可用于15～50 kHz跳频应用的带通滤波器,可达到连续选频的目的.     

一种制备硅通孔电镜测试样品的新方法

从硅通孔工艺质量检测角度出发,针对测试样品制备中存在的问题,提出了一种独特的电镜样品制备方法。该方法与聚焦离子束切割技术制作样品方法相比,降低了试样的拟作成本和制作时间。用于观察薄样横截面的电镜样品制备方法在其他领域也具有一定的参考价值。     

改造裴庄采场运输道路,深入挖潜干选资源

为了最大限度回收裴庄采场铁矿石资源,裴庄车间对采场北部干选资源的赋存进行仔细研究,形成了运输系统改造方案,达到充分回收北部采场老运输系统积压的干选资源的目的。