Application of Various Lasers to Laser Trimming Resistance System

Though the laser trimming resistance has been an old laser machining industry for over 30 years, the development of technology brings new alternative lasers which can be used for the traditional machining. The paper describes application of various lasers to laser trimming resistance system including early traditional krypton arc lamp pumped Nd：YAG to laser, modern popular diode pumped solid state laser and the present advanced harmonic diode pumped solid state laser. Using the new alternative lasers in the laser trimming resistance system can dramatically improve the yields and equipment performance.     

电子装备技术状态自动监测与可靠性分析系统

介绍了电子装备技术状态自动监测与可靠性分析系统的组成、主要功能、技术指标、特点和实现方法,以及应用情况和前景.     

TDICCD相机成像系统地面检测设备设计

针对TDICCD成像系统在研制过程中对地面检测的各种需求,设计了一套地面检测设备,按照功能划分为供电仿真系统、测控仿真系统、485总线监视系统、图像数据采集系统等。设计出的地面检测设备已经成功配合完成了某遥感相机的研制,并交付使用。实验证明该系统工作稳定,灵活可靠,满足了TDICCD成像系统检测的要求。     

The development of recent high-power ultrasonic transducers for Near-well ultrasonic processing technology

With the reduction of crude oil throughout the world, enhance oil recovery technology has become a major oil research topics, which can greatly increase the recovery ratio of the crude oil before the dawning of renewable energy era. Near-well ultrasonic processing technology, as one new method, has attracted more attention for Enhanced Oil Recovery due to its low cost, good applicability and no environmental pollution in recent rears. There are two important relevant aspects about Near-well ultrasonic processing technology: (a) how to enhance the oil flow through the rocks into the pumping pool and (b) how to reduce the oil viscosity so that it can be easier to pump. Therefore, how to design a high-power ultrasonic equipment with excellent performance is crucial for Near-well ultrasonic processing technology. In this paper, recent new high-power ultrasonic transducers for Near-well ultrasonic processing technology are summarized. Each field application of them are also given. The purpose of this paper is to provide reference for the further development of Near-well ultrasonic processing technology.With the reduction of crude oil throughout the world, enhance oil recovery technology has become a major oil research topics, which can greatly increase the recovery ratio of the crude oil before the dawning of renewable energy era. Near-well ultrasonic processing technology, as one new method, has attracted more attention for Enhanced Oil Recovery due to its low cost, good applicability and no environmental pollution in recent rears. There are two important relevant aspects about Near-well ultrasonic processing technology: (a) how to enhance the oil flow through the rocks into the pumping pool and (b) how to reduce the oil viscosity so that it can be easier to pump. Therefore, how to design a high-power ultrasonic equipment with excellent performance is crucial for Near-well ultrasonic processing technology. In this paper, recent new high-power ultrasonic transducers for Near-well ultrasonic processing technology are summarized. Each field application of them are also given. The purpose of this paper is to provide reference for the further development of Near-well ultrasonic processing technology     

Processing and properties of engineering plastics recycled from waste electrical and electronic equipment (WEEE)

The characteristics of engineering plastics used in the preparation of electrical and electronic equipment were studied. More specifically, their thermal response was recorded by DSC experiments, the rheological properties were investigated via MFI tests and the mechanical properties were evaluated with tensile tests. The aim was to establish a procedure for recycling the same engineering plastics deriving from waste of electrical and electronic equipment (WEEE), which offers the additional advantage of using the as-received waste stream as a recyclable mixture, i.e. without sorting and classification of its components.The experimental results showed that blends of PC with ABS or ABS/HIPS can be prepared by direct mixing and this, would allow easy handling of the engineering plastics coming from WEEE, i.e. blending without the need of sorting. These mixtures can be easily processed and display acceptable mechanical properties with reasonable cost. Therefore, the processing characteristics and properties of the systems studied in this work could be the key for the design of an interesting approach for handling solid plastic waste from electrical and electronic devices.     

Bonus or flat wage? An experiment into the principal-agent problem

We conduct a simple principal-agent experiment in order to find the effects of information asymmetry on compensation. Our aim is the analysis of the appropriate compensation and its impact on employee’s effort. Furthermore we want to compare the offered compensation and the supplied effort in the version without communication and we want to know whether the experimental observations are consistent with the theoretical considerations.The experimenters found out that compensations observed during the experiment were different from those suggested by the theory and although they were theoretically not enough to induce high effort, we could observe high performance supplied by the agents.     

电子专用设备模块化设计的研究

论述了模块化设计方法及电子专用设备设计的实际特点,并结合模块化设计在电子专用设备研制中的实际应用,阐明了模块化设计的实用性和指导性以及现实意义。     

虚拟机在课程实验中应用综述

高校教育中对实际操作能力要求越来越高,但现实情况是由于受到设备和资金方面的制约很多课程的实验教学达不到课程要求。利用虚拟机可以解决实验中设备不足的局面,完成教学要求。     

HP83480数字通信分析仪的硬件测量算法

参数测量主要指对波形特性，如上升时间、下降时间、过冲、周期、脉冲波形或眼图的幅度等。掩码测量将波形与预定掩码比较。眼参数测量是专用于眼图性质的测量，如眼高、眼宽、抖动、交叉高度和消光比等。     

旋转流体实验设备改造

论述了旋转流体实验装置改造所存在的问题及改进的措施。