大型喷浆机器人机械结构研究

介绍了大型喷浆机器人的机械结构和功能。并阐述了大型喷浆机器人的使用情况 ,实践证明 ,该机械人机构结构设计合理、简单 ,操作方便 ,易于维修 ,可靠性高     

移动通信手机电池的工作原理及电气性能

简述了目前常用的移动电话手机电池的工作原理，介绍了手机电池的电气性能和检验方法。     

CATV系统的故障对电视图像的影响

本文介绍了ＣＡＴＶ系统各种故障对电视图像的影响，分析了形成的原因，并提出了改进的方法。     

LiNbO3光波导DBR结构透射特性分析

本文采用等效波导光栅Ｆ－ｐ腔方法分析了有耗情况下ＬｉＮｂＯ３光波导ＤＢＲ结构的透射特性，给出了利用这一结构设计电光强度调制器以及电调频分器的方法。     

氮化硅薄膜的PECVD生长及其性能研究

采用ＰＥＣＶＤ法，反应温度为２５０℃，反应气体为ＮＨ３，ＳｉＨ４，在抛光硅片上沉积０．２～０．４μｍ厚的氮化硅薄膜。对这种Ｓｉ３Ｎ４薄膜的光学性能和电学性能进行了测试，其光学折射率为１．８７５，电阻率及击穿场强分别为８×１０１６Ω·ｃｍ及１×１０７Ｖ／ｃｍ，并用ＦＴＩＲ谱分析了薄膜的化学结构。     

强流离子注入均匀性控制

本文讨论了强流离子注入机的全机械扫描靶室中实现剂量高均匀性和高重复性注入的变速扫描设计原理及控制技术。     

COMPARISON OF PROBE METHODS FOR MEASUREMENT OF BUBBLE PROPERTIES

Direct quantitative comparisons of four different probe methods were performed for determination of local gas holdup, vertical bubble length, bubble rising velocity, and bubble frequency. The methods include vertically projecting electroresistivity, horizontally projecting electroresistivity, U-shape light reflection, and light transmission. The measured bubble properties strongly depended on the size and configuration of the probe tips. The light transmission probe developed in this work can be used to determine the bubble properties effectively. In order to minimize interferences with bubble flow, the size of probe tip should be small as possible and its configuration must be vertically projecting.     

Joint power allocation and subcarrier pairing in OFDM-based cooperative relaying system

This paper proposes rate-maximized (MR) joint subcarrier pairing (SP) and power allocation (PA) (MR-SP&PA),a novel scheme for maximizing the weighted sum rate of the orthogonal-frequency-division multiplexing (OFDM) relaying system with a decode-and-forward (DF) relay.MR-SP&PA is based on the joint optimization of both SP and power allocation with total power constraint,and formulated as a mixed integer programming problem in the paper.The programming problem is then transformed to a convex optimization problem by using continuous relaxation,and solved in the Lagrangian dual domain.Simulation results show that MR-SP&PA can maximize the weighted sum rate under total power constraint and outperform equal power allocation (EPA) and proportion power allocation (PCG).     

Embedded benzocyclobutene in silicon: An integrated fabrication process for electrical and thermal isolation in MEMS

This paper reports a novel fabrication process to develop planarized isolated islands of benzocyclobutene (BCB) polymer embedded in a silicon substrate. Embedded BCB in silicon (EBiS) can be used as an alternative to silicon dioxide in fabrication of electrostatic micromotors, microgenerators, and other microelectromechanical devices. EBiS takes advantage of the low dielectric constant and thermal conductivity of BCB polymers to develop electrical and thermal isolation integrated in silicon. The process involves conventional microfabrication techniques such as photolithography, deep reactive ion etching, and chemical mechanical planarization (CMP). We have characterized CMP of BCB polymers in detail since CMP is a key step in EBiS process. Atomic force microscopy (AFM) and elipsometry of blanket BCB films before and after CMP show that higher polishing down force pressure and speed lead to higher removal rate at the expense of higher surface roughness, non-uniformity, and scratch density. This is expected since BCB is a softer material compared to inorganic films such as silicon dioxide. We have observed that as the cure temperature of BCB increases beyond 200 °C, the CMP removal rate decreases drastically. The results from optical microscopy, scanning electron microscopy, and optical profilometry show excellent planarized surfaces on the EBiS islands. An average step height reduction of more than 95% was achieved after two BCB deposition and three CMP steps.     

经管类专业IT支撑课程群实验体系构建

经管类专业IT支撑课程群实验体系是培养学生实践动手能力的重要途径,对学习各专业的后续课程起到支撑作用。针对如何让经管类学生快速掌握现代信息技术这一问题,结合山东财经大学经管类人才的培养目标,提出构建以跨学科综合实验为主要内容的IT支撑课程群实验体系。从学生反馈以及考试结果来看,学生学习兴趣以及学习效果均取得了较大提高。