利用m—MTDATA作为空穴注入层增加有机发光器件的效率     

杨惠山 《泉州师范学院学报》2008,26(2):44-48

制备一种利用4,4’,4＂-tris（3-methylphenylphenylamino）-triphenylamine（m—MTDATA）作为空穴注入缓冲层的器件．m—MTDATA增加部分从阳极ITO注入到有机层NPB的空穴,从而平衡了空穴和电子的注入．有缓冲层的有机发光器件比没有缓冲层有机发光器件的电流效率有了明显的提高．当缓冲层m-MTDA—TA为25nm时,最大电流效率在7V时达到3．15cd／A．是没有缓冲层器件电流效率的近3．5倍．  相似文献   

Technoliberal rhetoric,civic attention,and common sensation in Sergey Brin’s “Why Google Glass?”     

Damien Smith Pfister 《Quarterly Journal of Speech》2019,105(2):182-203

Sergey Brin’s February 2013 TED Talk, “Why Google Glass?,” is an example of technoliberal rhetoric that offers a constricted vision of civic attention. Technoliberalism, the intensification of neoliberalism through computational technology, funds Brin’s emphasis on the primacy of action-oriented leisure, the power of connection, and the possibility of sensation without mediation. I interpret “Why Google Glass?” as indicative of how technoliberalism privatizes, marketizes, and digitizes sensation, frustrating the efforts of strangers to make common, democratic worlds. The essay concludes by underlining the continued importance of sensing-in-common, identifying specific vectors for rhetoricians to pursue in preserving the foundations of democratic community: advocating for shared public life instead of corporatized, privatized experiences; employing glass metaphors to understand how ubiquitous glassed devices shape sensation; and designing interventions with and without the aid of digital technologies to spark civic desire.  相似文献   

液压设备故障的实用诊断方法探析     

杜巧连  邵文革  包应时 《金华职业技术学院学报》2002,2(3):12-14

在生产现场，由于受生产计划的限制，往往要求故障诊断人员能准确、简便和高效地诊断出液压设备的故障。但由于液压设备故障的根源有许多种可能性，这给液压系统的故障诊断带来了一定的困难。针对这种情况，本文提出了液压系统故障诊断的系统分析法和参数测量法，并分析了系统分析法和参数测量法在液压设备故障诊断中的应用。  相似文献   

Neo-liberal influences in a ‘conservative’ regime: the role of institutions,family strategies,and market devices in transition to higher education in France     

Agnès van Zanten 《比较教育学》2019,55(3):347-366

ABSTRACT

This article focuses on the interplay between institutional arrangements, family strategies, and market devices in the transition to higher education (HE) in France with a view to documenting both persistent features of the French ‘conservative’ educational regime and recent changes, in particular those related to neo-liberal influences. Using a theoretical model inspired by research on welfare regimes and integrating key elements of the sociology of networks, institutions, and markets, as well as data from a comprehensive qualitative study, the article focuses on three main topics: the impact of both institutional stratification and family choices on segregation and channelling into HE; the framing of students’ choices generated by impersonal policy instruments and personal human guidance; the role of private providers and agencies, as well as the devices they use to influence students’ transition to HE. The conclusion emphasises the impact of these different processes on the perpetuation of educational inequalities.  相似文献   

Dis-placing place-making: how African-American and immigrant youth realize their rights to the city     

Katie Headrick Taylor  Deborah Silvis  Adam Bell 《Learning, Media and Technology》2018,43(4):451-468

ABSTRACT

Notions of place-making assume that individuals and groups of people have legitimate ‘rights to the city.’ This paper unsettles these notions to incorporate the politically and legally tenuous relationships African-American and Immigrant youth have to their cities. We describe a community-based digital STEAM curriculum called Mobile City Science that invited youth to engage in place-making efforts using mobile and location-aware technologies. The design study relied on a contradiction that is fundamental to youth place-making in an era of white nationalism: for African-American and Immigrant youth to engage power structures in community development processes, they had to engage in a series of dis-placements that removed them from embodied experiences and in-location perceptions of their communities. Self-censoring, witnessing, historicizing, and re-veiwing were all examples of dis-placements youth enacted to speak truth to power with digital and mobile tools.  相似文献   

语篇衔接手段对专业英语泛读教学的启示     

王克香 《通化师范学院学报》2010,31(5):96-98

衔接手段是衔接理论中不可缺少的部分,此理论是由韩礼德和哈桑提出的。首先简要介绍语法衔接手段和词汇衔接手段,然后基于此理论阐述衔接手段在语篇组织中的体现形式及作用,并以《英语泛读教程》（第二版）第二册第一单元前四段为例,尝试将这一理论与专业英语泛读教学实践相结合,探讨这一理论对专业英语泛读教学的启示。  相似文献   

Orthotic control of rear foot and lower limb motion during running in participants with chronic Achilles tendon injury     

ORNA A. DONOGHUE  ANDREW J. HARRISON  PHILIP LAXTON  RICHARD K. JONES 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):194-205

  相似文献   

泛在环境下图书馆服务创新研究   总被引：1，自引：0，他引：1  

杨灵芝 《情报科学》2012,(3):347-351,386

随着信息技术、多媒体技术和网络技术的发展,泛在环境下学习渐渐成为社会研究的热点之一。在这种环境的影响下,传统的图书馆服务也要随之作出调整。本文分三个部分,第一部分讨论泛在环境对图书馆服务的影响,第二部分论述了泛在环境下用户信息需求的特点,第三部分针对泛在环境下用户需求的特点探讨图书馆服务创新。  相似文献   

Common Rhetorical Devices in Written English     

赵松 《中国校外教育(理论)》2010,(7)

Rhetorical devices are kinds of literal form of expressions.Their application is to make the idea more striking and effective,for they have the strength to express and illustrate.An appropriate rhetorical device appeals to the imagination,gives us vivid pictures and makes the written English impressive and interesting.For this reason,written English often uses various rhetorical devices to improve the readability and attract readers' attention and to arouse readers' interest of reading their materials.This paper mainly discusses common rhetorical devices in written English so as to help readers understand the written materials better.  相似文献   

钼酸铅声光器件换能器电输入阻抗     

余姗  谢本亮 《赣南师范学院学报》2010,31(3):45-47

利用压电换能器等效电路网络分析法,计算了36°Y切LN/PM声光器件换能器的归一化电输入阻抗|Zj|随归一化频率f/f0的变化值;绘出了|Zj|-f/f0关系立体图;得出器件的输入阻抗是随频率变化的复杂复数函数且在不同工作频率段均呈现容抗特性的结论.  相似文献