大鹏湾海水理化因子与夜光藻增值的灰关联分析

通过夜光藻种群增殖态势与理化因子的比较，以空间理论数学为基础，按规范性、偶对称性、整体性和接近性四条原则，确定参考数列（母数列：夜光藻）和若干比较数列（子数列：海水理化因子）之间的关联度，研究了大鹏湾夜光藻种群增殖与海水理化因子间的关系．结果表明：浮游动物、溶解氧和叶绿素ａ对夜光藻种群密度的增长有比较重要的影响．     

A pattern of contractor selection for oil and gas industries in a safety approach using ANP-DEMATEL in a Grey environment

Contractor selection is one of the major concerns of industry managers such as those in the oil industry. The objective of this study was to determine a contractor selection pattern for oil and gas industries in a safety approach. Assessment of contractors based on specific criteria and ultimately selecting an eligible contractor preserves the organizational resources. Due to the safety risks involved in the oil industry, one of the major criteria of contractor selection considered by managers today is safety. The results indicated that the most important safety criterion of contractor selection was safety records and safety investments. This represented the industry’s risks and the impact of safety training and investment on the performance of other sectors and the overall organization. The output of this model could be useful in the safety risk assessment process in the oil industry and other industries.     

水质评价中的宽域灰色决策法

依据灰色决策的基本原理，结合环境质量评价的实际情况，用宽域式结构建立隶属函数，提出宽域灰色决策法，并以水质评价为例进行了尝试。结果表明，宽域灰色决策法的评价结果比较符合实际状况，比模糊数学法和灰色聚类法的评价结果更为合理。     

模糊优选原理在水质综合评价中的应用

本文将模糊优选原理应用到水质综合评价中，并通过与模糊综合评价模型对水质评价的比较，验证了其准确性和优越性。     

采场作业环境安全灰色评价及应用

作业环境研究是人机工程学的一个重要方面,作业环境质量的好坏直接影响作业的效率,同时还关系到作业人员的人身健康与安全。在采场作业环境下,作业人员在一个受限的空间范围内作业,作业环境的安全问题成为影响作业人员人身健康甚至生命安全的重要方面,科学合理地评价其安全状况对改善室内环境安全具有重要意义。由于影响采场作业环境安全状况的因素复杂,这些因素具有模糊性、不确定性,具有典型的灰色特征,本文运用灰色理论的灰色关联分析对采场作业环境的安全状况进行综合评价,并用实例分析进行说明,从而为管理者提供辅助决策,实现采场作业环境的安全、高效。     

基于GM（1，N）灰模型预测企业主动性安全投入

本文基于GM（1,N）灰模型对企业主动性安全投入总量进行预测,研究把企业安全整体情况或整体表现作为一个“灰系统”对待时,依据该系统的特征量,来对企业主动性安全投入进行预测,为我国企业进行安全投入时提供决策依据。     

基于季节性因素的安全生产灰色时序分析预测—以陕西省为例

为了探索安全生产和季节性因素的关系,建立X-12-ARIMA模型对2007-2012年安全生产月度数据进行分析,得到了分离季节性影响之后的时间序列、不规则因素、季节性因素和趋势循环因素,在此基础上建立考虑季节性因素的安全生产灰色SARIMA预测模型。研究结果表明,陕西省工矿商贸领域的安全生产受季节性因素的影响,每年的7月和12月是陕西省安全生产受到季节性影响最严重的月份;SARIMA预测结果与实际的陕西省安全生产走势较为吻合,精度较为可靠。研究结果对安全监管和安全生产政策制定有一定的指导意义。     

基于新型综合集成法的矿井通风系统安全评价

矿井通风系统是一个复杂的多因素非线性系统,具有多变、随机和模糊的特点。应用传统的单一评价方法,缺乏系统性和科学性,很难全面地进行安全评价,为了更好地对矿井通风系统安全进行较为客观的定量评价,需要将一种新的综合集成评价方法运用到评价中。通过深入研究德尔斐法、层次分析法、灰色关聚类法以及模糊综合评判法的基本理论,将它们有机地结合起来建立了新型综合集成评价法。在此方法中,应用德尔斐法建立矿井通风系统安全的评价指标体系,采用层次分析法确定各评价指标间的权重,灰色聚类法则用来处理专家评分,对于结果的分析采用模糊综合评判法进行。将不同的理论用于不同的阶段,可以更加全面的考虑矿井通风系统的各种因素,使结果更加准确直观,符合实际。工程实例表明该方法具有较强的逻辑性、实用性和可靠性,为矿井通风系统的安全性提供科学依据。     

作用度在风险评价变权重中的优化和应用

权重设定是风险评价重要内容之一,其在传统风险评价运用时的不变性和设定时的主观性会影响评价精度。作用度是后验概率的函数,利用作用度设定权重能降低先验概率的影响,通过将作用度优化到风险因子的取值上,实现实时评价过程中的变权重,从而提高风险评价效能。     

Workplace racial/ethnic similarity,job satisfaction,and lumbar back health among warehouse workers: Asymmetric reactions across racial/ethnic groups

Racial and ethnic minority employees constitute a significant proportion of the U.S. workforce. The literature on demographic similarity in the workplace suggests that the proportion of co‐workers who share the same racial/ethnic background (racial/ethnic similarity) can influence job attitudes and employee well‐being and that the reactions to racial/ethnic similarity may differ between the racially dominant and subordinate groups. This study applies status construction theory to examine the extent to which racial/ethnic similarity is associated with job satisfaction and lumbar back health among warehouse employees. We surveyed 361 warehouse workers (204 whites, 94 African‐Americans, and 63 Latino workers) in 68 jobs in nine distribution centers in the United States. Multilevel analyses indicate that white and racial/ethnic minority groups react differently to racial/ethnic similarity. For job satisfaction, white employees experience higher job satisfaction when they are highly racially/ethnically similar to their colleagues, whereas Latino employees experience higher job satisfaction when they are racially/ethnically dissimilar to others. As for lumbar back health, among Latino and African‐American employees, higher racial/ethnic similarity is associated with better lumbar back health whereas for white employees, the association is the opposite. Across all groups, moderate levels of racial/ethnic similarity were associated with the best lumbar back health. Copyright © 2013 John Wiley & Sons, Ltd.