Slack-nibbling battery-aware task scheduling

Dynamic voltage scaling (DVS) is an efficient approach to maximize the battery life of portable devices. A novel overall planning strategy (OPS II) balancing slack supply and demand for DVS is proposed. An OPS II-based slack-nibbling overall planning strategy (SNOPS) algorithm is also proposed, which iteratively nibbles slacks for appropriate tasks selected by an overall planning dynamic priority function to perform DVS until the slack is exhausted and an optimum voltage setting is obtained. For a high-load task set, SNOPS manages to recover battery overload while maintaining schedulability. For random variable-load task sets, SNOPS achieves a saving of 29.51% battery capacity on average, the suboptimal gap is 27.84% narrower than that of our previously proposed OPS-based algorithm, and 92.10% narrower than that of the algorithm proposed by Chowdhury et al. Results indicate that OPS II manages to save battery to various extents while maintaining schedulability, and demonstrates good load compatibility and close-to-optimal performance on average. Biography: GAO Xun(1981–), male, Ph.D. candidate, research direction: embedded system, power optimization.     

计算机辅助管理在铁路供、配电调度中的运用

讨论了计算机辅助管理技术在铁路供、配电调度中的运用，并简述了在凯里供电段的铁路段供、配电调度管理系统，以及系统的建设目标、主要功能及其实现。     

彩电开关电源的改进方法

分析了彩电开关电源的不足，并提出了改进的措施。     

利用Delphi4.0开发基于人工神经网络的电力系统应用软件

采用分任务 (Task)的思想 ,利用可视化语言 Delphi4.0开发了基于人工神经网络 (ANN)算法的电力系统应用软件 ,共包含变压器故障诊断、负荷预测、局部放电、系统辨识和潮流计算 5大模块 ,其中仅以变压器故障诊断和系统辨识为例说明其开发过程和实际中的应用 .本软件人机交互界面类似于 Office模式 ,对 Delphi的编程技巧有一定的启示作用 ,同时稍加改进还可进行实时数据的采集与处理 .最后介绍了利用 Help Work Shop制作在线“帮助”的方法 ,对其它可视化语言有一定的借鉴作用     

一种新型音频辉光放电高压电源

研制出一种多用途、宽频带的音频辉光放电高压电源，工作频率为10～130kHz，输出电压连续可调，并成功地应用到速度、浓度调制等激光光谱实验中。     

高频高效照明驱动电路的开发与设计

采用逆变式高频电源对水银灯类高亮度照明电源的驱动电路进行了开发设计，解决了照明灯光闪动问题，并可使输入功率因数达到９９％以上，同时通过实验也验证了该方法的可行性。     

一种早期诊断皮下肿瘤的新方法

提出了一种采用微带六端口进行早期诊断皮下肿瘤的新方法 ,并研制了原理性的微带六端口皮下肿瘤早期诊断仪 .     

用热电厂碱性废水脱除循环冷却水中Ca^2＋，Mg^2＋的研究

考察用热电厂碱性废水作为循环冷却水或补充水处理药剂的作用，研究了该废水中的碱性物质与循环水中Ca^2 、Mg^2 两种主要离子结合的规律。结果表明：热电厂碱性废水含有大量的氢氧化钙，将其配入循环水中，能与其中的重碳酸钙和重碳酸镁反应，生成难溶的碳酸钙和氢氧化镁沉淀物，降低了Ca^2 ,Mg^2 两种主要离子的含量。如果再配入一定数量的其他碱性废水，则循环冷却水软化效果更为明显。     

Improvements of the Computerized Data Acquisition System for 25MWt Experimental Facility of Coal-fired MHD Generator

This paper introduces the design and development of a new computerized data acquisition system for the coal-fired magnetohydrodynamical (MHD) electrical power generation experiments. Compared to the previous system, it has a higher sampling rate and an improved simultaneity performance. It also improves the data collection method and sensor design for the measurement of Faraday voltages and Faraday currents. The system has been successfully used in many regular MHD generator tests. It provides an excellent base for the future research and development of the Coal-fired MHD electrical power generation.     

遥控彩电三无故障的分析与检修

分析现行遥控彩电开／关机电路实现的方式及其工作原理，给出检修遥控彩电出现三无故障的有效方法——遥控功能解除法。