不同模型拟合优度下的多响应优化方法

响应曲面方法是对产品质量改进的一种有效的试验设计方法。目前,在响应模型的不同拟合优度问题基础上的多响应优化方法还有待进一步的研究。满意度函数方法是一种简单易行的响应曲面方法,而传统的满意度函数方法并未涉及响应模型的拟合优度。文章在指数满意度函数基础上提出了一种改进的满意度函数方法,以解决试验设计中不同拟合优度下的多响应优化问题。该方法将调整的Ra2dj作为响应曲面模型拟合优度的衡量标准,考虑了响应模型的拟合优度因素,分析了不同的拟合优度对多响应优化结果的影响。最后,通过实例对该方法进行验证,得到了较好的效果。     

基于Bernstein基函数的石油价格预测研究

本文主要根据2000年5月至2011年3月间纽约商品交易所WTI价格数据,以数据挖掘和时间序列方法为基础,将基函数拟合的方法运用到石油价格预测当中。通过Bernstein的对称性和可分割性达到了修改拟合曲线的目的。Bernstein基函数具有严格的凸包特性,为预测提供了良好的先决条件,通过对模型的检验,Bernstein基函数模型达到了对石油价格的预测和分析的作用。     

多面函数法在GPS高程拟合中的应用

为了改善GP5大地高向正常高转换的精度，在局部区域内，建立多面函数模型进行高程拟合．可以达到较高的精度。文中利用多面函数模型进行高程拟合，除选取分布均匀的GPS水准联测点外，还对核函数形式的选取做了详细地分析，并与高程拟合中常用的二次曲面拟合法做了对比，进行了精度分析。     

基于客户满意度的服装业车辆调度研究

从客户满意度的角度出发,针对车辆调度问题进行了优化探讨。首先提出对客户满意度进行评价的客户满意度模糊隶属函数,并在此基础上构造基于客户满意度的车辆调度模型。其次设计了求解车辆调度问题的遗传算法,并和客户满意度模糊隶属函数相结合,可以避免车辆调度问题只能获得满意解的情况。     

电池剩余放电时间预测模型研究——以20～100A铅酸电池为例

利用Excel工具、回归软件对电池剩余放电时间进行讨论,从经济、有效等方面出发,通过函数拟合、数据筛选、作图等,构建出拟合精度高、可决系数高的放电曲线的初等模型,进而对电池剩余放电时间进行预测。先应用Excel工具对给定的9组数据进行函数拟合,得出了9条放电曲线,接着根据MRE定义算出9条放电曲线的平均相对误差,并以此求出当电压为9.8V时,30A、40A、50A、60A、70A的剩余放电时间。接着应用同样方法建立了20~100A任一恒定电流强度放电时的放电曲线的数学模型,并用MRE评估模型的精度、表格和图形给出电流强度为55 A时的放电曲线。最后根据模型算出在衰减状态3下的放电曲线及其在最低保护电压9 V时的剩余的放电时间。     

基于时间序列拟合武汉市商品住宅价格的走势

本文从武汉市近几年的季度经济数据出发，利用时间序列模型，研究商品住宅价格的变化数据，分别给出了五种不同的函数模型，对商品住宅平均价格的时间序列数据进行模拟，并成功得出其拟合函数，由此对武汉市未来短期内商品住宅价格的变化进行合理的预测。针对所发现的现象及预测，进一步对房地产调控政策提出建设性的建议。     

基于径向基神经网络的网络流量预测

针对网络流量在时序上的复杂非线性特征,采用径向基函数神经网络对网络流量时间序列进行预测。用自相关分析技术分析时间序列的延迟特性,建立了基于MATLAB6.5环境下径向基神经网络的网络流量预测模型,并用本校网络流量数据进行了验证。结果表明,该模型拟合精度和预测精度较高、计算速度较快。     

基于时间满意的应急物资运输模型与算法

根据应急抢险救灾物资需求时效性强的特点,定义了考虑时间因素和需要量满足程度的时间满意度函数,建立时间满意的多目标应急物资运输问题的数学模型。针对数学模型,设计了序贯式算法,并利用LINGO软件编制程序进行了求解。最后通过一个实例验证了数学模型的科学性和算法的有效性。     

基于时间满意的应急物资运输模型与算法

根据应急抢险救灾物资需求时效性强的特点,定义了考虑时间因素和需要量满足程度的时间满意度函数,建立时间满意的多目标应急物资运输问题的数学模型。针对数学模型,设计了序贯式算法,并利用LINGO软件编制程序进行了求解。最后通过一个实例验证了数学模型的科学性和算法的有效性。     

GPS-RTK高程拟合方法-多项式函数法

通过多项式函数拟合高程异常,研究GPS-RTK高程拟合的原理和方法,纠正平面拟合是用平面代替似大地水准面的错误观念。     

Targeted employee retention: Performance‐based and job‐related differences in reported reasons for staying

What makes employees stay with a particular employer? To find out, we developed a content model of 12 retention factors in the context of previous theory and research and analyzed open‐ended responses from 24,829 employees in the leisure and hospitality industry. Our coding of their comments supported the identified framework and revealed that job satisfaction, extrinsic rewards, constituent attachments, organizational commitment, and organizational prestige were the most frequently mentioned reasons for staying. High performers and nonhourly workers were more likely to cite advancement opportunities and organizational prestige as reasons for staying, whereas low performers and hourly employees were more likely to cite extrinsic rewards. These findings highlight the importance of differentiating human resource management practices when the goal is to retain valued employees. © 2009 Wiley Periodicals, Inc.     

考虑需求不确定的订单分配模型研究

从顾客需求不确定性出发,在考虑批量折扣的情况下,构建了一个基于成本、延迟交货数量、质量和交货提前期的具有模糊权重的多目标订单分配模型。在求解过程中,用隶属度函数表示决策者对各目标值的满意程度,用梯形模糊数来表示各指标的权重,然后将多目标规划问题转化为求全局满意度最优的单目标规划问题。最后通过一个数值算例说明了模型的求解过程。     

Part‐time work for women: Does it really help balance work and family?

Results of this study suggest that the differential response of women to part‐time work as opposed to a career may be a function of motivational and work‐context differences between career and non‐career women. Part‐time work was associated with lower work‐to‐family interference, better time management ability, and greater life satisfaction for women in both career and earner‐type positions. Role overload, family‐to‐work interference, and family time management, however, were dependent on job type with beneficial effects for earners but not for career women. Job type also played a role: Career women reported higher life satisfaction and lower depressed mood than did women in earner positions. © 2000 John Wiley & Sons, Inc.     

基于时效性和响应性的生鲜农产品配送中心选址模型研究

针对生鲜农产品的时效性和响应性等特性,引入生鲜度损耗系数和响应时间满意度函数,提出了基于时效性和响应性的生鲜农产品配送中心选址模型。最后给出了该问题的一个算例,结果表明了该模型的有效性。     

工业建筑的现状与发展方向

工业建筑自19世纪兴起以来,随着工业产业的迅速发展,必然要求其随之发展并逐步完善。经济、工业产业崛起的同时,工业建筑从其设计理念到设计成果、从结构形式发展到建筑材料更新、从实现其基本功能到实现自动化控制,从满足采光通风的基本要求到实现节能设计,也无不发生着翻天覆地的变化。     

基于质量功能展开的顾客满意度研究

质量功能展开是基于顾客要求的结构化产品开发方法。把质量功能展开（Quality Function Deployment,QFD）方法引入顾客满意度研究中,建立了顾客满意度测评的质量屋模型。通过多阶段的QFD模型将总体顾客满意度逐步展开为易于顾客判断的指标,进而实施了顾客满意度指数的测评;并通过某家电企业的顾客满意度测评实例,说明了这种方法实施过程。     

基于质量功能展开的顾客满意研究

把产品设计的质量功能展开(QFD)方法引入到顾客满意研究中,提出了顾客满意的质量屋模型,该模型从驱动顾客满意的产品质量功能特性角度,围绕质量屋的七大要素,给出了提升顾客满意度的基本方法,最后通过某品牌手机顾客满意评价的实例说明了这种方法的实施过程。     

The micro-processes of supplier satisfaction: A longitudinal multiple case study

Supplier satisfaction has often been argued to be an important determinant for supplier performance in the buyer-supplier relationship. The micro-processes of how supplier satisfaction develops and how it relates to supplier performance, however, are not well understood. By means of a longitudinal multiple case study design of 18 buyer-supplier relationships, this paper provides insights into the micro-processes of how supplier satisfaction develops. Our findings provide several new insights. First, we observed how supplier satisfaction levels showed little change even though the buyer's behavior did not align with the supplier's expectations, thereby nuancing current conceptualizations of supplier satisfaction being a function of expected and realized relational value. Second, we show how intra organizational dynamics at the supplier influence the relationship between supplier satisfaction and supplier performance. Third, our findings give insights into the complex interplay between the relational and economic antecedents of supplier satisfaction.     

Reducing the effects of work–family conflict on job satisfaction: the kind of commitment matters

The way in which organisational commitment influences the relationship between work–family conflict and job satisfaction is a question that has produced contradictory results. We address this issue by developing and testing a model that integrates role conflict theory and major research on organisational commitment, to elucidate the consequences that time‐, strain‐ and behaviour‐based conflict have on job satisfaction. The research is based on data collected among Italian nurses, and the results show that time‐ and strain‐based conflict are negatively related to job satisfaction. In addition, affective commitment moderates the relationship between strain‐based conflict and job satisfaction, whereas normative commitment moderates the relationship between time‐based conflict and job satisfaction. We discuss the implications of these results for theory and practice.     

第三方物流顾客满意度的模糊综合评价分析

第三方物流作为企业第三利润源泉,凸现其重要的作用.企业的顾客满意度分析是关系企业成败的关键因素.因此本文运用模糊层次分析方法,并结合实证研究,建立第三方物流的顾客满意度指标体系和评价模型.