实现图形滚动显示的Windows程序设计方法     

卢秉娟  杨磊 《洛阳工业高等专科学校学报》1998,(4)

本文阐述了Windows的GDI技术的特点、坐标系和映射方式。提出了实现图形滚动显示的Windows程序设计方法和图形的缩放技术。  相似文献   

数字技术创新对新一代信息技术产业升级的作用机制研究     

孟庆时  余江  陈凤  卢超 《研究与发展管理》2021,33(1):90-100

基于数字创新理论和数字技术创新规律及其内涵的辨析,本文采用2007—2017年我国先进显示产业数据,实证分析了数字技术创新对产业升级的作用机制。研究发现：数字技术创新是以技术融合和技术体系变革为主要动力的网络化和去中心化创新合作过程;多元化创新并不总是促进产业升级,创新合作网络中跨模块和模块内部频繁的创新合作以及技术深度拓展反而不利于产业升级;对于先进显示产业来说,自下而上的基础组件创新、前沿技术创新和系统性创新同样重要。研究发现拓展了数字技术创新和产业升级研究相关理论,对于产业创新追赶具有重要参考价值。  相似文献   

用微机软件技术实现雷达图像的模拟显示     

潘杰 《上海海事大学学报》1999,(3)

主要论述了如何采用微机软件技术,实时模拟显示雷达图像和其他一些常用辅助符号与工具。介绍了模拟港口岸形、物标回波和其他助航物标回波的生成,雷达回波的干扰、遮挡和衰减,固定距标圈、电子方位线和活动距标圈的显隐与图像的有关裁剪算法等。  相似文献   

The potential of immersive virtual reality to enhance learning: A meta-analysis     

《Educational Research Review》2022

Research on the impact of immersive virtual reality (I-VR) technology on learning has become necessary with the decreasing cost of virtual reality technologies and the development of high-quality head-mounted displays. This meta-analysis investigates the overall effect size by combining the results of primary experimental studies that reveal the effect of I-VR on learning outcomes. Besides, effect sizes were calculated based on measuring moment, types of measurement, education level, the field of education, control group educational resources, and immersion type subgroups. One hundred five independent results were calculated from 48 primary studies published between 2016 and September 2020, including 39 randomized controlled trials and nine quasi-experimental studies. The sample size of primary studies includes 3179 students, 847 from K12, and 2332 from higher education. Random effects model was used in the calculation of effect size. As a result of the meta-analysis, it was determined that the overall effect size on the learning outcomes of I-VR was small (g = 0.38). Additionally, according to the subgroup analysis results, it was revealed that I-VR significantly differentiated effect size based on educational level, the field of education, and computer-based/traditional sources. There was no significant difference in terms of the other subgroups.  相似文献