【作者】 崔鑫；

【导师】 邢建平； 刘新；

【作者基本信息】 山东大学 ， 电子与通信工程， 2007， 硕士

【摘要】 本文在对传统电子政务软件的开发效率进行详细分析和研究的基础上,提出了一种新的基于模型的权限控制方法。并研究了基于此种新方法如何对功能的内部控制点进行抽象与建模,如何建立对数据的访问控制规则,如何在软件中解释通用的功能控制模型与数据规则的问题。该研究的目的在于:在不同安全级别下,提高电子政务软件的开发效率,增强软件的灵活性,降低软件的开发维护成本。从而提高政府部门的工作效率,节省经费开支。论文首先对电子政务软件开发领域的国内外现状进行了简要介绍,指出了其中存在的问题,分析了对于该问题的国内外研究现状并进行了归纳总结,即目前的电子政务软件,在不同安全级别下,无法很好地满足用户的“时间和空间上的个性化”。用户对单一功能内子功能的安全控制要求,已经从整体单个功能控制,转移到了功能内的子功能的不同级别的控制;同时,由于电子政务软件的需求还在不断变化,软件在时间维度上无法满足用户的快速响应要求。使得效率、成本、不同安全级别控制等问题日益成为电子政务软件满足用户个性化需求的重要阻力。然后,从技术层面对上述问题进行了剖析,得出若干需要解决的关键性技术问题。为了解决这些关键技术问题,本文提出了一种新的基于模型的权限控制方法,在传统的功能模型的基础上,通过建立新的子功能模型,使控制颗粒度细化到功能内部,并可以根据用户的个性化需求灵活地进行改变。接下来,以VB6.0作为开发平台,以设计开发一套功能相同的工资管理软件作为比较基准,分别采用两种设计方法开发。对软件的功能和开发效率进行对比,从而对这种新的方法进行验证。通过验证得出结论:采用该方法的电子政务软件开发效率要高于采用传统方法的软件开发效率,在一定程度上解决了采用传统方法带来的低效率、高成本、灵活性差等问题,可以很好的满足用户在不同安全级别下的个性化需求。最后,对整个研究过程进行了总结,并对该课题的发展前景进行了展望。通过对该课题进行研究,本文提出一种新的基于模型的权限控制方法,可以支持颗粒度更加细化的权限控制,提高电子政务软件的开发效率,增强软件的灵活性,降低软件的开发维护成本,很好的满足用户的个性化设计需求。通过进一步扩展,可以将该方法应用于实际的电子政务系统开发设计中,从而为广大用户与软件商带来巨大的经济效益,应用前景广阔。更多还原

【Abstract】 In the base of the analysis and investigations of the exploiture efficiency of traditional E-Government affair softwares, this paper has put forward a new rights control method which based on models. It also deeply studied how to use this method to abstracting and modelling the internal control points of a function; how to erect the data accessing control rules; how to explain the general function control model and data accessing control rules in softwares.The purpose of the researchment is: In different security levels, improve the exploiture efficiency of E-Government affair softwares; make the softwares more flexible; reduce the exploiture and maintenance cost of the softwares. In order to improve the work efficiency of the government and save cost.First, the paper made an introduction of the current status of the E-Government affair softwares’ exploiture and has pointed out its problems. The problem is, current E-Government affair softwares in different security levels, can’t satisfy the user’s "temporal and dimentional individuations". The user’s requirement on security controls of subfunctions in a single function has beem moved from a whole function to the subfuntions in it; further more, as the requirement of E-Government affair softwares changes with time, it can’t satisfy quick response requirement of the user. It makes the efficiency, the cost, the access control in different security levels become serious problems on the road of the development of the E-Government affair softwares. Then, the paper analysised the problem before, made some key technical questions. In order to solve the key technical questions, the author put forward a new rights control method based on classical models. It has added a new subfuntion model to the original function model which makes the control level to the internal of the function and the softwares more flexible in the basis of user’s request. Next, in order to prove the new method, the author has designed a salary management software with VB6.0 using two methods, one is traditional, the other is model-based, and has compared their functions and exploiture efficiency. After the comparation, it has made a conclusion that the model-based method is more efficient than the traditional method. It can solve the problems like high cost, low efficiency, less flexible etc, and it also can satisfy the user’s requests in different security levels. At last, the author reviewed the whole procession of the researchment, made a prospection to the researchment a few decades later.Through the researchment, the paper has put forward a new rights control method which based on models. It can support rights control in lower levels, improve the exploiture efficiency of the E-Government affair softwares, make the softwares more flexible, reduce the cost of the softwares, and satify the user’s requests better. More developed, the method can be used in designing the E-Government affair softwares, make more profit to the users and the software corporations. It can be used widely.更多还原