ERP系统用户管理和优化

随着企业信息化的建设,越来越多的企业通过ERP系统来提升企业的管理水平,ERP系统和企业管理充分结合,成为各企业信息化成败的关键,用户权限管理模块能有效的管理整个ERP系统,保证系统中用户的业务权限准确,使系统的运行的正常、准确。     

基于Web软件的权限动态管理设计与实现

在Web应用软件中,权限管理是常见的功能,不同用户具有不同的软件使用权限,系统根据登录用户的角色来完成权限的审定,从而进入用户的软件使用界面。在实际应用中,登录用户的权限有时会根据实际情况发生变化,从而需要调整相应的用户权限,常规的权限管理无法适应权限的动态变化。为解决这种问题,设计了一种高效的权限管理方案,利用该方案实现了用户权限的动态管理,该设计方案已用于实际的软件项目中,极大地提高了权限管理的灵活性、方便性和高效性。     

一种改进的Clark-Wilson完整性策略模型

Clark—Wilson完整性策模型在商业安全领域可以有效满足企业信息系统所追求的完整性安全需求。但是直接将用户和权限关联，给权限的管理带来不便；对权限不加以时间约束，会带来安全隐患；在用户同谋的情况下，模型还会失效。基于上述缺陷，在用户和权限之间引入角色的概念，用户可以在受约束的情况下激活自己拥有的角色从而获得相应的权限，使Clark—Wilson完整性策略模型更具有安全特性。     

企业SAP ERP系统用户权限管理解决方案

企业在使用SAP ERP系统进行用户权限管理过程中,经常会发现分配给用户的权限过大或职责不分离,部门领导审批用户权限形式化,每次内控审计都会发现一大堆权限配置错误,文章通过探讨这些问题,提出研究解决的方案。     

基于DBMS验证的用户权限管理方法

在信息系统中使用DBMS的用户身份验证方法可以提高信息系统的安全性.验证方法的改变影响了用户的权限管理过程,信息系统既需要进行系统前端功能权限管理,也需要进行后端数据库权限的管理.使用模块级的数据库角色管理用户的数据库权限,可以减少用户的数据库权限授权的工作量并保持授权的准确性,同时保持与前端的功能权限管理的一致性.可把数据库角色的原理应用到前端功能权限的管理,实现控件级的授权和用户访问控制.     

基于RBAC的数据上报系统设计与实现

提出了一种基于角色访问控制(RBAC)的权限管理方法,并在用户和角色之间引入部门对象,通过用户和部门、用户和角色以及角色和权限的关系,抽象出用户、部门、角色和权限的关系,从而增加权限配置的粒度,实现数据上报的分级管理,降低了权限管理的复杂性。     

权限管理平台的研究与应用

随着企业信息化的发展，业务系统数量逐渐增多，各系统账号、密码、权限分散管理的传统模式，存在较大的信息安全隐患，用户体验欠佳。文中提出了建立一个基于开源框架的权限管理平台，该平台可以实现统一身份认证、单点登录及用户行为风险识别，并重点阐述了权限管理平台的设计及实现方式。     

应用RBAC技术实现MIS用户权限管理的统一

针对管理信息系统中存在的客户端应用系统和服务器端数据库系统用户权限管理不统一的问题，提出了一种应用RBAC技术的解决方案，通过对用户、角色和权限的定义和管理，结合存储过程技术，实现了前后台用户权限的统一和动态的管理。     

知识窗

权限管理功能权限管理是一种给不同的用户设置不同操作权限的管理功能。具有权限管理功能的系统被用来管理操作员的操作权限,它通过给不同的用户设置不同的操作权限,从而让不同的用户拥有不同的操作员身份,保留不同的权力,来对移动交换系统进行相应的操作和维护。权限管理系统首先建立不同权限级别的权限组,然后在相应的权限组下添加操作员,这样操作员就获得了对应权限组的权限,每个权限组下的所有操作员权限相同。在权限管理系统中,权限组分内建和自定义两大类。(1)内建权限组内建权限组指在初安装PHS维护系统时自动产生的权限组,共有5类…     

一种灵活的小颗粒权限管理方法及其实践

权限管理是应用软件的重要组成部分,它关系到应用系统安全性和可靠性。当前的软件管理者和用户的多样性为权限管理提出了挑战。传统粗粒度的权限管理系统权限粒度较粗,较难适用于用户复杂多样的管理系统,故提出一种基于"位示权限"和"权限矩阵"的细粒度权限管理的方法(Flex-RBAC),实现了相应的权限分配算法,减小了权限分配的粒度,增加了权限管理的灵活性。提出的细粒度、配置灵活的权限管理方法及设计的原型系统,为应用软件的细粒度权限管理提出一种切实可行的方法。Flex-RBAC方法的创新点在于权限管理的粒度细小、配置灵活、算法实现简单,具有较高的通用性。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.