A Research on the Internal Audit Performance Measurement Models Selection and Application

近年来，我国企业努力提高经营效率和效益，力求将企业风险控制在低水平，而内部审计在企业这个过程中扮演着重要的角色。于是，对内部审计部门绩效制定科学有效的评价模型变得愈发重要。企业绩效评价体系应当随所处环境的变化而不断修正，就目前国内企业开展内部审计绩效评价的情况而言，大多数企业仅仅采取绩效评估表评价内部审计绩效，其绩效评价指标也很少修改。因此，如何按照企业自身情况选择内部审计绩效评价模型，讨论评价模型适应性问题成为本文研究的核心问题。 本文通过对内部审计工作进行分解，按照内部审计部门绩效评价维度与内部审计业务绩效评价维度，按内部审计部门发挥的职能，分为财务导向、经营导向、管理及风险导向内部审计...In recent years, domestic enterprises are doing their best to keep the enterprise risks in a low level by improving efficiency and benefit of management, internal audit is playing an important role in them, so it’s more and more important to establish a scientific and efficient performance measurement system in the internal audit department. The system of performance measurement should always been...学位：管理学硕士院系专业：管理学院_会计学学号：1752013115115

Research on Business Process Optimization of China Postal Express &Logistics Co.Ltd EMS——A Case Study Based on Suzhou Branch

中邮速递物流股份有限公司作为国内最大的速递企业，现在面临的却是市场份额逐年降低，客户满意度较差的现状。速递企业作为服务型企业，其流程对于输出结果的作用不言而喻。因此，本文首先描述其核心业务——速递业务的流程；然后运用ECRSI方法分析其流程中存在的问题；接着针对问题运用标杆瞄准法、ABC分类法、节约里程法等方法提出了优化方案，最后基于质量功能展开理论，运用质量屋建立了EMS业务流程优化的定量模型。 具体来看，本文首先对中邮速递的组织构架进行描述，并从税收征缴和行业内其他企业组织构架类型两个方面进行分析，得出总分公司制优于现在的母子公司制。接着运用一单真实的快递业务，完整的描述邮件从下单到投递...As the largest Express Delivery Company, China Postal Express & Logistics Co., Ltd. now suffered from market share decline and poor customer satisfaction. As a service-orientated enterprise, business process plays an important role towards the service output. This research firstly describes its core business—the process of express delivery, secondly analyses its problems under ECRSI method, the pr...学位：工程硕士院系专业：管理学院_物流工程学号：1772011115112

明线会车、隧道会车及过隧道时的高速列车动力响应

明线会车、隧道会车和过隧道工况下的气动压力波对高速列车的动力响应和运行安全产生很大影响,本文建立了三辆编组的高速列车动力学模型,通过数值仿真得到了列车在三种工况下的车体所受的气动力,基于数值积分分析了列车的动力响应和脱轨系数。研究发现:明线会车和隧道会车工况相比,车辆的侧向运动相反。明线会车和过隧道时,气动载荷对列车的脱轨系数影响较小,而隧道会车时,气动载荷作用对尾车的安全性影响较大

Research Progress of SiO2 Regrowth during Selective Etching Process in 3D NAND Manufacture Procedure

作为半导体市场中主要存储芯片之一,NAND已从2D发展到3D。3D NAND的立体存储结构提高了芯片容量、性能和可靠性。在3D NAND的交替堆栈结构中,需通过氮化-物氧化物的选择性刻蚀获得层间介质层,堆栈层数越多,芯片性能越好,但高层堆栈的刻蚀均匀性也更难保持,此时易出现SiO2在氧化层端头再沉积的回沾现象,层间结构被破坏,影响器件性能。要达到更高层数必须减少回沾,探究该过程及其影响因素成为关键所在。本文综述了3D NAND制程中氮化硅选择性刻蚀工艺的发展现状和现有研究成果,强调了控制硅含量对防止回沾的重要性,介绍了相关理论模型,提供模拟预测。为深入分析其中的化学反应,本文对相关的SiO2溶液化学进行了概述,总结了聚硅酸形成的影响因素,强调胶凝曲线能反应其聚合行为,据此可研究怎样通过影响硅酸聚合行为或聚硅酸在氧化层表面的沉积行为来防止回沾,以对未来研究起到理论指导作用.As one of the most significant memory chips in semiconductor market, NAND has been developed from two-dimension (2D) to three-dimension (3D). Due to the three-dimensional memory structure of 3D NAND, the capacity density, read-write speed and reliability of memory chips have been greatly improved, as well as the reduction of power dissipation. It is by nitride-oxide selective etching process in the alternate stacked structure of 3D NAND that the inter-dielectric layers can be obtained. The more stack layers, the better performance of chips will be. Meanwhile, however, silicon dioxide (SiO2) would regrow on the corner of oxide layers, the phenomenon called regrowth, which directly makes damage to the stack structure. If the deposition is so thick that becomes adhesive together, the stack structure will collapse, severely affecting the performance of devices. Preventing SiO2 regrowth is imperative for higher stacked layers, meaning that the key point is to figure out the specific process of regrowth and its impact factors. Due to the rapid development of this field, the existing information is such a mess that there is a lack of sorted information and systematic research dealing with the problem of regrowth. This paper briefly reviewes developing situation and existing research results of silicon nitride selective etching process in 3D NAND manufacture procedure, with emphases in the significance of controlling silicon concentration to avoid regrowth. Furthermore, relative theoretical models are introduced to provide simulation and prediction for regrowth process. In order to analyze the chemical reaction in regrowth, this paper summarizes the relative solution chemistry of silica and the impact of polysilicic acid formation, and suggests that the gel curve can reflect its aggregation behavior. Accordingly, researches on how to avoid regrowth can be guided theoretically by discovering the influence factors of silicic acid aggregation or the deposition behaviors of polysilicic acid on oxide layers.通讯作者:李明E-mail:[email protected]:MingLiE-mail:[email protected].上海交通大学材料科学与工程学院,上海 2002402.上海新阳半导体材料股份有限公司,上海 2016161. College of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China2. Shanghai Sinyang Semiconductor Materials Co., Ltd., Shanghai 201616, Chin

结构在线健康监测与分析系统

结构健康监测与检测实验室是我所2009年新建的关于结构损伤分析方面的试验研究机构。其主要专业特长为：利用监测和检测手段获取结构静、动态响应信号及环境信息，结合对结构力学特性的综合分析，实现对结构内部损伤程度与分布状况的实时在线评估。它作为力学方面的新的学科增长点，在研究内容方面涉及了固体力学、结构动力学、损伤力学等学科共同关注的前沿领域，在技术方面吸纳了传感器设计、利用与信号采集、处理与分析技术的综合结晶，与传统的损伤检测技术相比具有在线、动态、实时监测与控制的功能优势；作为服务于工程应用的新技术，将在工程结构安全管理、降低结构安全维护成本，减少结构运行与建造费用，预测结构老化状态以及减灾、防灾方面发挥不可替代的重要作用。同时鉴于SHM实验室在结构动力学和疲劳、断裂力学分析与试验研究方面的坚实基础，它自然肩负了结构振动试验、分析与控制和结构疲劳断裂分析与寿命评估等方面的研究任务以及解决与该领域相关的工程实际问题的职责

气动升力下磁浮车辆非线性响应研究

磁浮列车在高速运行时受到的气动升力包含定常分量和非定常波动量,而非定常气动升力在某种程度上可以视为周期扰动。建立考虑非线性电磁力的磁浮系统二级悬挂的模型,推导了控制方程。利用增量谐波平衡法求解非线性方程,对考虑定常气动升力和周期性非定常气动升力条件下的磁浮系统非线性响应特性进行分析。开展了线性和非线性模型对比、控制增益参数和气动力系数影响规律分析。结果表明,采用PD控制器时,周期扰动的气动力会使得车辆振动中心发生偏移,反馈控制参数对振动偏移具有较大影响

活塞环几何参数对发动机性能影响

主要通过数值计算探讨几何参数对发动机性能的影响,为某型发动机的优化设计提供优化建议