Analysis and Design of Labour Inspection Management System

目前我国正处在经济体制转型的关键时期，在计划经济向市场经济转轨过程中，随着法制建设不断完善和国企改革不断深入，大量长期隐性化问题逐渐显现，劳动纠纷和违法案件大量增加。为提高劳动关系管理机构工作效能，增强预见分析能力和决策水平，开发一套建设规范、指标体系和应用统一的劳动关系管理信息系统，是当务之急也是行之有效的方法。 鉴于当前劳动保障监察管理工作欠规范以及劳动保障年审管理手段落后的实际情况，本文分析并设计了一套劳动监察管理系统。在系统的分析过程中，首先分析了劳动监察管理的一般业务流程，在此基础上提出了本套系统的整体架构思路；随后对监察管理数据、数据流程以及平台用户进行了详细的分析，同时对系统结...At present, our country is in a critical period of economic structure reform, in the transition from planned economy to market economy, a lot of long-term implicit problems rise to surface with the continuous improvement of legal system and further reform of state-owned enterprises, labor disputes and illegal cases increased sharply. To enhance the forecasting and decision-making capabilities with...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X200923032

High-speed communication interface based on SOPC

基于fPgA的可编程片上系统(SOPC)以其设计灵活、可裁剪、软硬件可在线编程等特点和优势,成为嵌入式系统设计,乃至电子领域发展的一个重要方向。用户IP核的设计是SOPC设计的重要组成部分,介绍了通信系统的SOPC系统架构,提出利用IPIf将用户IP核挂载到Plb总线上的方法,给出了rlC和物理层接口的IP核的设计与实现。设计中首先把IPIf信号转换成用户逻辑的内部信号,同时对不同速率的接口进行数据缓存,实现流水线传输,从而提高传输速率。FPGA-based Programmable System on Chip(SoPC)with its flexible design,scalable,hardware and software online programming and other features and advantages,becomes an important direction of the embedded system design,and even the development of electronic.User IP core design is an important part of SoPC design.The paper first briefly introduces the SoPC architecture of communication system,and then makes use of IPIF to mount the user IPcore to the PLB bus,at last gives the design and implementation of RLC and PHY Layer interface IP core.In the design,first transfer the IPIF signals into the user logic internal signal,and then cache data of the interface of different rates,to realize the pipelined transmission and improve the transmission speed.福建省重大专项项目资助(2009HZ0003-1

Study on the Development of Xiamen's Innovation Capacity

本文通过构建城市创新力指标体系,选取厦门、深圳、大连、宁波作为样本城市,选择2006年、2008年及2009年作为考察年份,采用主成分分析法对以上城市的创新力进行横向及纵向的比较分析,从中发现厦门创新力现状及动态变化情况,寻找厦门市城市创新力发展变化背后存在的原因,为其他城市提升城市创新力提供借鉴。This article constructed a set of index system about a city's innovation capacity,and chosed Xiamen,Shenzhen,Dalian,Ningbo as sample cities,and 2006,2008,2009 as sample years,then analyzed these cities'innovation capacity horizontally and vertically.Through comparison,we can find the situation and dramatic changes of Xiamen's innovation capacity,and then look for the underlying causes of these changes,which can be used for the reference for other cities.国家软科学研究计划“海峡两岸产业创新合作模式与策略研究”(2010GXS1D125

The Capital Structure Choice of Financial Distressed Firms: Evidence from China

对比分析财务困境企业和非财务困境企业资本结构影响因素及调整过程的差异,研究财务困境企业合理选择资本结构的问题。研究发现,财务困境企业高负债率的形成与第一大股东的持股比例和股权集中度都有显著的相关关系,但从企业资本结构的调整过程来看,控股股东持股比例对企业资本结构的调整作用不大。因此,不能仅从公司治理的角度解决企业的财务困境问题,还要从资本结构优化的角度选择融资方式。To study on how to choose the optimal capital structure for financial distressed listed firms,the difference of the factors influencing the capital structure and the adjusting procedure between non-distressed firms and distressed firms is analyzed.It shows that the high debt ratio of the distressed firms is significantly related with the proportion of the largest shareholder and the concentration of the share structure.However,the proportion of largest shareholder has little effect on the adjustment of capital structure.Therefore,to solve the problem of distressed firms,it will depend not only on the improvement of corporate governance,but also on the optimization of financial channels.国家自然科学基金资助项目(70502013

Improvement of n-butanol recycling technique in industrialized production of silicon dioxide as flatting agent

针对福建某工厂现有工艺生产二氧化硅消光剂过程,采用间歇蒸馏方式回收正丁醇存在时间长、效率低等问题,提出使用双塔精馏工艺进行改进以缩短正丁醇回收时间和提高回收效率。对改进后的工艺使用流程模拟软件进行模拟计算,获得了新的工艺条件参数。改进后,冷凝分层温度为85℃,精馏塔一塔釜液中正丁醇质量分数为99.62%,精馏塔二塔釜中正丁醇质量分数为0.31%。在此基础上搭建了实验室规模精馏装置并进行了验证试验,试验结果与模拟计算值接近,相对平均偏差为5.4%,表明模拟计算的结果可信。模拟计算结果为工业装置的优化提供了依据。改进后,正丁醇回收率将大幅提高,生产周期由原来的10 H缩短为5 H,能耗显著降低。采用此工艺生产二氧化硅消光剂可大幅降低过程成本。In order to reduce time cost and increase efficiency in n-butanol recycling,a double-column distillation process was suggested to replace the existing batch process due to its high time consumption and low efficiency.The improved process was simulated with flow simulation software.The calculated results show that in the improved process,condensing temperature is 85 ℃,the mass fraction of n-butanol at the bottom of Column 1 and Column 2 is 99.62% and 0.31% respectively.The verification tests on lab-scale distillation device were carried out.It shows that the calculated results are close to the tested results,and the average relative deviation is 5.4%,which indicates the calculated results are credible,and can provide a basis for optimization in industrialized plants.Now,n-butanol recycling efficiency increases largely and production cycle is reduced from 10 h to 5 h and energy consumption drops remarkably,so production cost can be largely reduced

Measurement of the Static Optoelectronic Characteristics of InGaAs/InP Avalanche Photodiode

建立了雪崩二极管的静态光电特性的自动测试系统。利用该系统对光敏面的直径为500μm的台面型InGaAs/InP雪崩光电二极管(APDs)进行测试。测试结果表明,该APD器件在90%击穿电压下的暗电流为151nA,在直径500μm的光敏面上其光响应均匀性良好。提出一种测量雪崩二极管倍增因子的方法,只需利用普通的测量电流-电压的测试仪器,就可以获得开始倍增时的光电流,从而得到APD的倍增因子。通过该方法得到的InGaAs/InPAPD器件最大倍增因子的典型值在10～100量级。A measurement system is set up which could measure static optoelectronic characteristics of avalanche photodiodes (APDs). By using this system, the mesa-structure InP/InGaAs APDs is measured. The results show that the APDs have a relatively low dark current (～150 nA at 90% of breakdown) and a uniform photoresponse profile of about 500 μm diameter. A method of getting APDs's multiplication gain is also proposed. Through getting the photocurrent at the point where multiplication is beginning, the multiplication gain can be obtained by the simple current-voltage equipment. For InP/InGaAs APDs, the typical maximum multiplication gain measured by this method is about 10～100

Study on removal boron from solargrade silicon with hydrometallurgy

湿法提纯作为冶金法制备太阳能级硅的前处理工序,可以去除大部分金属和硼杂质。研究了以氢氟酸-硫酸混合酸为浸出剂,有机溶剂甲醇作为后处理剂,去除硅粉中硼杂质的方法。采用电感耦合等离子体发射光谱仪(ICP)等对产品进行表征。酸浸过程优化工艺条件:硫酸质量分数为55%,氢氟酸质量分数为7%,酸浸温度为70℃、酸浸时间为4 H、液固质量比为8∶1。酸浸后可使硅粉中的硼杂质质量分数由6.893x10-6降至3.867x10-6,去除率为41.9%。在酸浸基础上采用有机溶剂甲醇作为后处理剂,杂质硼质量分数降至3.84x10-6,去除率为44.29%。从硼酸浸后形成的产物入手探索提高硼去除率的方法,实验验证了该方法的可行性,为研究湿法冶金预处理太阳能级硅提供了新的参考。As a pretreatment unit for preparing solargrade silicon(SG-Si) by metallurgic method,wet purification could remove most metallic impurities and nonmetallic impurities,such as boron.Experiment researched a new method to remove boron from SG-Si with mixed hydrofluoric acid-sulfuric acid as leaching agent and with organic solvent methanol as posttreatment agent.Samples were characterized by ICP and other analysis methods.When SG-Si powder had been leached at optimized conditions as follows:mass fraction of sulfuric acid was 55%,mass fraction of hydrofluoric acid was 7%,reaction temperature was 70 ℃,reaction time was 4 h,and liquid-solid mass ratio 8∶1,it was found that mass fraction of impurity boron in SG-Si was reduced to 3.867×10-6 from 6.893×10-6 and the removal rate was 41.9% after acid leaching;on the basis of the former procedure,mass fraction of impurity boron was reduced to 3.84×10-6 and the removal rate was 44.29% when treated with organic solvent.Experiment proved the feasibility of the method and provided a new reference for researching on the pretreatment of SG-Si by hydrometallurgy

催化裂解法制备碳纳米管中试反应器优化研究

对催化裂解法(CVD)间歇制备多壁碳纳米管(CNTs)的中试流化床反应器的结构进行优化研究,以期简化结构、改变出料方式、实现半连续化操作。实验结果表明:床层内置加热器开启,CNTs产量下降15%,床层阻力增加67%;预热层高度为零,反应4h,产率最高为9.2g/g;催化剂量为100g,最佳匣钵高度是35cm;将间歇操作调整为半连续操作,生产周期将从24.0h降为8.5h

Lifting device

本发明公开一种吊运装置,能够用于起吊孔为细长型的吊运物,吊环固定在吊运装置的顶部,T型滑动套杆一端与吊运杆套接,另一端与端盖套接,第三端一方面通过螺旋扭转压缩弹簧与固定勾体连接;另一方面滑动套杆上带有保险限位槽的轴端部分与固定勾体形成间隙滑动配合,保险定位销上套接弹簧与保险限位槽啮合,吊运杆与固定勾体焊接;将T型滑动套杆扭转一定角度与吊运杆端相对,推动T型滑动套杆,即扭转又压缩螺旋扭转压缩弹簧,T型滑动套杆在滑动腔内运动,其下端套接在吊运杆上,继续推动T型滑动套杆使保险定位销在螺旋压缩弹簧的作用下与限位槽啮合锁死,本发明具有结构简单、工作性能可靠、操作简便、实用性强等优点

Axis used flexibility rib special compact agency

本发明提供一种轴用弹性挡圈专用压装机构，包括：压具本体为塔形空 腔的腔体，气弹簧一端与压具本体第一腔体顶端抵接，第一固体润滑轴承与 压具体第二柱状腔体顶端抵接，第一固体润滑轴承另一端与压具本体侧壁固 接，定位压头设于第一固体润滑轴承内，定位压头的导向顶尖与装配轴轴端 扣合相接，导向体通过第二固体润滑轴承与压具本体连接，压缩弹簧位于第 三柱状腔内，导向体下部设有导向筋，导向体与装配轴套接；定位压头使压 具本体、导向体相对于装配轴径向定位，弹性挡圈在导向体上被压具本体准 确地压装到位，克服了传统压装过程中定位性不好，挡圈容易压偏变形的缺 点，具有结构形式简单、操作简便、实用性强等优点