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分析了传统影视传播的特点及网络影视传播的优势,从二者的比较中看出,在新世纪影视传播领域必将发生一场革命,毫无疑问这场革命的主力军就是网络影视传播。 相似文献
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何冠生 《西北大学学报(自然科学版)》1995,25(4):306-308
介绍了智能数字化大仓物位仪的原理和设计方案。讨论了采取怎样的措施抑制温度的影响以及噪声和干扰的影响;怎样利用微机提高测量精度。从而保证在12.5m的测量高度内,最大测量误差不大于±0.02m。 相似文献
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A new wear-graphy technology was developed, which can simultaneously identify the shape and composition of wear debris, for both metals and non-metals. The fundamental principles of the wear-graphy system and its wear-gram system are discussed here. A method was developed to distribute wear debris on a slide uniformly to reduce overlapping of wear debris while smearing. The composition identification analyzes the wear debris using the scanning electron microscope (SEM) energy spectrum, infrared-thermal imaging and X-ray imaging technology. A wear debris analysis system based on database techniques is demonstrated, and a visible digitized wear-gram is acquired based on the information of wear debris with image collection and processing of the wear debris. The method gives the morphological characteristics of the wear debris, material composition identification of the wear debris, intelligent recognition of the wear debris,and storage and management of wear debris information. 相似文献
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利用3S一体化技术构建了数字化海洋安全管理决策系统.通过人机交互,为用户提供界面操作,集图像、表格、文字等多媒体表达方式于一体,从可视化角度反映海洋安全信息,实现海洋安全管理与应急决策等功能.为政府部门进行海洋领土管理、海洋资源与环境管理提供一种新方法,且能为快速、有效、合理地处理突发安全事故提供必要的科学依据. 相似文献
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