纳米光电子器件在照明、显示技术中的发展和应用     

李琳  于凤梅 《广东技术师范学院学报》2007,(10):94-98

纳米光电子器件及其技术的新兴,受到各界的关注.本文概述了纳米光电子器件的发展现状和发展趋势,重点介绍纳米发光材料和碳纳米管场致发射显示器在照明、显示领域中的发展及应用.  相似文献   

Promotion and caution in research article abstracts: The use of positive,negative and hedge words across disciplines and rankings     

Shaoliang Xie  Chenggang Mi 《Learned Publishing》2023,36(2):249-265

Abstract as a promotional genre has been an increasing interest in recent years, leading to an intriguing debate on the objectivity of scientific writing. The present study investigated the promotion and caution in research article abstracts through the use of positive, negative and hedge words across disciplines and rankings based on a large and principled dataset (more than 12.6 million words). The corpus was designed and built with full consideration of representativeness, structure, balance, and size in terms of discipline and ranking. The results showed that positive words were more frequently used than negative words in terms of both discipline and ranking, positive and negative words were more frequently used in hard sciences than those in soft sciences and high ranking journals than those in low ranking journals, and hedge words were more frequently used in high ranking journals and soft sciences. Further investigation also found a complexity of frequency patterns when two disciplines were broken down into specific categories. The more frequent use of positive words in abstracts to promote scientific research was discussed from the perspective of disciplinary knowledge construction in addition to the publication bias, the outcome reporting bias, and universal linguistic positivity bias.  相似文献   

文化创意产业科技需求视角下的可穿戴设备技术发展研究——基于知识图谱的分析方法     

宗利永  白韬韬  张飞相  匡霞 《科技管理研究》2015,(7)

研究聚焦于文化创意产业的可穿戴设备应用,以德温特专利数据库收录的可穿戴设备相关专利为数据源,借助Cite Space对所采集的数据进行德温特手工代码共被引网络图谱分析,展示该领域技术应用领域分布;并利用Cite Space软件提供的词频探测技术绘制出技术热点与前沿知识图谱,识别可穿戴设备领域的技术热点及演进;结合知识图谱的分析结论,对文化创意产业可穿戴设备科技需求进行了展望。  相似文献   

医疗器械使用维修管理现状分析及对策的探讨     

黄燊强 《黑龙江科技信息》2015,(5):63-64

医院的发展是建立在大量使用先进的高、精、尖的智能型医疗器械的,如何怎样使设备科发挥更大的作用来保障医疗器械的完好使用率、节约维修的成本、加快维修的进程,提高医院的经济效益,提供更好的"以患者为中心"的医疗服务,成为医院领导管理层必须要考虑的问题。本文对医院的医疗器械使用、维修的不科学的现状进行分析及解决方法进行相关的探讨。  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   

Rhetorical counteraction in Kenneth Burke's A Rhetoric of Motives and The War of Words     

Kyle Jensen 《Quarterly Journal of Speech》2018,104(4):384-399

However esoteric Kenneth Burke's A Rhetoric of Motives seems at first glance, it remains highly relevant to our contemporary moment. As a philosophy of rhetoric that centers on the nature of human conflict, it helps audiences interpret the vicissitudes of political warfare with greater precision and insight. The value of A Rhetoric of Motives becomes even more apparent in light of its recently discovered second volume, The War of Words. Together, these two volumes offer a novel method of rhetorical counteraction that helps specialist and non-specialist audiences redress the threat of nationalistic war. Burke's approach to rhetorical counteraction is distinguished by the study of rhetorical devices across history. By approaching these devices systematically, Burke believed he could help his audience reframe their attitude toward evolving political events. The purpose of this article is to present a thorough account of Burke's method so that it can enrich how we teach and engage in public deliberation today.  相似文献   

What do business models do?: Innovation devices in technology entrepreneurship     

Liliana Doganova  Marie Eyquem-Renault 《Research Policy》2009,38(10):1559-1570

Building on a case study of an entrepreneurial venture, we investigate the role played by business models in the innovation process. Rather than debating their accuracy and efficiency, we adopt a pragmatic approach to business models — we examine them as market devices, focusing on their materiality, use and dynamics. Taking into account the variety of its forms, which range from corporate presentations to business plans, we show that the business model is a narrative and calculative device that allows entrepreneurs to explore a market and plays a performative role by contributing to the construction of the techno-economic network of an innovation.  相似文献   

Hierarchical summarization for delivering information to mobile devices     

Jahna Otterbacher  Dragomir Radev  Omer Kareem 《Information processing & management》2008

Access to information via handheld devices supports decision making away from one’s computer. However, limitations include small screens and constrained wireless bandwidth. We present a summarization method that transforms online content for delivery to small devices. Unlike previous algorithms, ours assumes nothing about document formatting, and induces a hierarchical structure based on the relative importance of sentences within the document. As compared to delivering full documents, the method reduces the bytes transferred by half. An experiment also demonstrates that when given hierarchical summaries, users are no less accurate in answering questions about the documents.  相似文献   

Mobility of knowledge work and affordances of digital technologies     

《International Journal of Information Management》2017,37(2):54-62

The focus of this work arises from two needs within information science literature: (1) to understand more, from an empirically driven perspective, about the increasingly visible yet understudied mobile work population, and (2) to address more clearly, from a theoretical standpoint, the ways in which information and communication technologies (ICTs) mediate the work practices of these mobile workers. Drawing on the affordance perspective, this research goes beyond simplistic conceptualizations of technological effects to explore the roles of multiple ICTs in enabling mobile knowledge work. In this paper, the use of ICTs in mobilizing information practices and the ways in which ICTs generate affordances along different mobility dimensions (spatial, temporal, contextual, and social) are examined. The empirical base of this research is a field of study of 33 mobile knowledge workers (MKWs); broadly, it focuses on the ways they employ ICTs to accomplish work in dynamic and unpredictable work conditions.  相似文献   

人体器官芯片   总被引：2，自引：0，他引：2       下载免费PDF全文

秦建华  张敏  于浩  李中玉 《中国科学院院刊》2017,32(12):1281-1289

人体器官芯片是一门新兴的前沿科学技术,也是一门典型的多学科交叉汇聚技术,对人类健康和生物产业发展具有重要战略意义,吸引了来自政府、科学界和产业界的关注,被2016年达沃斯世界经济论坛列为"十大新兴技术"之一。人体器官芯片指的是一种在载玻片大小芯片上构建的器官生理微系统,包含有活体细胞、组织界面、生物流体和机械力等器官微环境关键要素。它可在体外模拟人体不同组织器官的主要结构功能特征和复杂的器官间联系,用以预测人体对药物或外界不同刺激产生的反应,在生命科学和医学研究、新药研发、个性化医疗、毒性预测和生物防御等领域具有广泛应用前景。文章概述性介绍了人体器官芯片的起源、国际发展态势和研究进展,并对其面临的挑战和未来发展趋势予以展望。  相似文献