基于SAHP和需求模式的需求优先级排序方法

针对当前需求优先级排序方法中,将用户需求放在同一层次上进行比较,设定优先级,而对需求层次性考虑得不多。从系统的整体性和需求的层次性出发,提出以解释结构模型和层次分析法相结合的需求优先级排序方法,其中用解释结构模型对需求进行结构分析和分层处理,对最上层的需求使用层次分析法进行需求优先级排序,将该方法命名为SAHP。在案例分析中,借助需求模式,对推广后的案例进行优先级排序,来说明该方法具有很好的通用性,给出案例分析和与AHP进行了比较。结果表明性能总体上好于AHP方法,该方法能够提高需求优先级设定的合理性,降低因需求导致项目失败的风险。     

气象信息网络安全风险评估

针对气象信息网络事故的随机性,复杂性和不确定的特点,以及在气象信息网络安全风险评估选取评估指标过程中存在的主观性,通过采用粗糙集改进的属性约简算法对用于评估的指标集进行约简,从而剔除其中的对最终结果不造成影响的指标,并且利用相对约简建立用于气象信息网络安全风险评估的层次指标体系,应用模糊层次分析法对选定的气象信息网络进行安全风险评估,比单纯的依靠专家打分法更具有科学依据和数据支持。     

Suitability evaluation of urban construction land based on geo-environmental factors of Hangzhou, China

Suitability evaluation of urban construction land based on geo-environmental factors is the process of determining the fitness of a given tract of land for construction. This process involves a consideration of the geomorphology, geology, engineering geology, geological hazards, and other geological factors and is the basis of urban construction land planning and management. With the support of Geographic Information Systems (GIS), grid analysis, and geo-spatial analysis techniques, four factor groups comprising nine separate subfactors of geo-environmental attributes were selected to be used in the evaluation of the suitability level for construction land in Hangzhou. This was based on K-means clustering and back-propagation (BP) neural network methods due to their advantages in fast computing, unique adaptive capacity, and self-organization. Simultaneously, the evaluation results based on K-means clustering and BP neural network were compared and analyzed, and the accuracy evaluation was set. The results showed that the geo-environmental suitability evaluation results of construction land based on K-means clustering and BP neural network were similar in terms of the distribution and scale of construction land suitability level. At the same time, the results of the two evaluation methods were consistent with the variability in suitability level, engineering geology, and hydrogeology of Hangzhou. The results also showed that the real advantage of the methods proposed in this paper lies in their capacity to streamline the mapping process and to ensure that the results are consistent throughout. The suitability level of the urban construction land based on the geo-environment in Hangzhou was divided into four construction sites: land for building super high-rise and high-rise buildings, land for building multistorey buildings, land for low-rise buildings, and nonbuilding land. The results of the suitability evaluation for each category will provide a scientific basis for decision-making in urban development in Hangzhou.     

Interval Evaluations in the Analytic Hierarchy Process By Possibility Analysis

Since a pairwise comparison matrix in the Analytic Hierarchy Process (AHP) is based on human intuition, the given matrix will always include inconsistent elements violating the transitivity property. We propose the Interval AHP by which interval weights can be obtained. The widths of the estimated interval weights represent inconsistency in judging data. Since interval weights can be obtained from inconsistent data, the proposed Interval AHP is more appropriate to human judgment. Assuming crisp values in a pairwise comparison matrix, the interval comparisons including the given crisp comparisons can be obtained by applying the Linear Programming (LP) approach. Using an interval preference relation, the Interval AHP for crisp data can be extended to an approach for interval data allowing to express the uncertainty of human judgment in pairwise comparisons.     

基于灰色关联度的供应商评价体系研究*

将层次分析法与灰色关联度相结合,提出了一种新的供应商评价方法。针对供应商评价指标间关联性比较强的特点,采用层次分析法确定评价指标权值,以灰色关联度作为评价标准,对复杂多目标的供应商对象进行综合评价,其结果具有良好的性质且方法简单、利于实现。     

基于原因分析的工程质量事故处理研究

原因分析是处理工程质量事故的关键环节,只有进行正确的原因分析,才能制定适宜的处理措施．结合某工程地下室底板裂缝事故,利用事故树分析方法建立裂缝事故的原因分析模型,利用层次分析法构造层次分析模型,确定各指标因素的层次分析权重,并结合专家建议,制定了合理的裂缝修补措施和后期工程事故的预防改进措施．     

企业危机管理能力评价研究

分析了企业危机管理能力的影响因素,建立企业危机管理能力的评价指标体系,使得企业能够通过评价其自身的危机管理能力,有效地提升其危机管理能力,为企业生存发展提供有益的帮助,并运用模糊综合评价法对某公司进行了实证分析,验证了评价模型的可靠性与科学性,并针对公司存在的问题,提出了建设性的意见。     

汽车4S店顾客销售满意度评价指标体系研究

顾客销售满意度对提升汽车4S店竞争力具有重要的影响,因此有必要建立一个评价指标体系对汽车4S店顾客销售满意度进行客观的调查与评价。在广泛调研和深入分析的基础上,利用层次分析法构建一个科学合理的汽车4S店顾客销售满意度评价指标体系,并用专家赋权法和顾客赋权法确定各层次评价指标的权重。     

带有门限的IBP+MMBP/Geo/1/K休假排队系统

建立了基于门限策略的双队列单服务台有限缓存包级休假排队模型IBP+MMBP/Geo/1/K。针对到达分布不同的两种业务各自的特点来定义休假策略,将H2H(Human to human)业务的休假期等效为M2M(Machine to machine)业务的服务期。为了寻求统一的标准来评价休假策略,定义了一个评价业务QoS的效能函数E。同时,研究了不同条件下的M2M业务对休假策略的影响。最后,通过仿真给出各种情况下系统各项性能指标以及效能函数的变化趋势,该研究结果可以用来指导无线资源分配和业务配置等问题。     

水利水电工程施工重大危险源辨析及应用

依据水利水电施工相关技术规范和安全法规,提出水利水电工程施工重大危险源辨析矩阵法。该方法首先利用LEC法对水利施工过程中的危险源进行初步判定,再用AHP法结合专家评定法对初定的危险源进行量化分析,得出综合安全指数,以此判定某项施工过程或作业是否是重大危险源。最后,利用该方法对大岗山水电站压力管道施工的危险性进行分析。