杭州市级三级甲等医院护士长护理研究成果应用的现状及阻碍因素分析

目的了解杭州市级三级甲等医院护理研究成果应用的现状及应用的阻碍因素。方法以随机整群抽样方法,采用护理研究成果应用现状调查问卷(自行设计)及中文版Funk量表对杭州4所市级三级甲等医院106名护士长进行调查。结果 97.2%护士长对成果应用持积极肯定态度,但实际将护理研究成果应用到临床护理工作中的并不多,主要阻碍因素为"研究报告/文章以英文出版,难以理解""不明白统计分析"和"研究设计有不足之处"。结论护理研究成果应用现状不理想,采取有效措施提高护理研究成果的利用率是关键。

Low Speed Control of Ultrasonic Motor Using Change-Speed Integral Strategy and Multi-Variables

In this paper, by off-line identification, the driving frequency and wave-numbers is obtained as input where the speed as output. The low speed model is built, the change-velocity integral control is applied, for the Nonlinearity, integral factor is corrected by reference to the model curvature, Suitability of the control strategy is improved. Against to the low speed working condition where the speed is lower than 1º/s, the multi-input system is established in order to improve the servo performance. Combine the PI strategy using frequency as the control variable, steady-state error is reduced. The experimental results are presented to verify the correctness and effectiveness of the proposed control strategy.