Optical interconnections for digital systems

The replacement of electrical lines and connectors by free space or guided-wave optics in high-performance digital systems is discussed. Components for such systems are considered, and prototype systems are described. Optical interconnections with only a laser, two lenses, and a detector are possible and such a free-space board-to-board interconnection has been demonstrated at 1 Gb/s with an average power dissipation of only about 40 mW     

提高电梯保养工作性能之途径(英文)

介绍了香港一家电梯公司所实施的策略品质管理，其品质策略、政策及目标都是以顾客的需求而确立的，持续品质改良已被采纳为公司之策略，用以改良表现及竞争优势。本文提出一个使用工作研究（ｗｏｒｋｓｔｕｄｙ）方法为蓝本而成功履行之品质改良项目。当完成这个项目时，严重缺点率（可能导致意外之缺点率）在两年间已由２％降至０．９％。公司虽耗资港币１１０万元用于这项目，却换来降低因意外赔偿之风险。该方法经证明是有价值的，它是一种改良保养工作表现之有效工具。