强化企业货币资金管理的对策探析

企业财务管理的中心是资金管理,企业财务管理与资金管理的密切关系,用现代财务管理体制的方法走出资金管理困境.通过对企业在当前资金管理中存在问题的分析,提出了企业加强货币资金管理的对策措施.     

布敦岩沥青(BRA)在重荷载道路中的应用

本文通过布敷岩沥青的改性机理,确认掺加布敦岩沥青的沥青混合料在高温、低温、水稳性等指标上都得到了一定程度的改善.同时结合布敦岩沥青(BRA)在天津港南港路三期改造工程的应用情况,证明布墩岩沥青改性剂可以提高沥青混合料抗车辙能力.有效地减小重荷载交通对道路路面的影响,延长道路的使用寿命.     

高速铁路对京沪两地间客运市场影响分析

根据有关客运专线运量预测方法,预测北京到上海2012年的客运基线运量,京沪高速铁路建成运营后的转移运量、诱发运量。预测分析表明,京沪高速铁路通车运营后将会产生69．68％的转移运量和30．32％的诱发运量,理论上有可能转移京沪间民航85．77％的趋势客运量。     

基于客观环境视角的苏南地区文化产业发展战略选择

在推动文化产业发展中,战略选择至关重要。研究表明,在优劣势互见的客观环境里,苏南地区发展文化产业应选择专业化—差异化—国际化的发展战略,这一组合式发展战略具有提高生产效率、合理配置资源、培养人才、培育龙头文化企业与文化品牌、提升产业品质与水平、避免同质化竞争等功能,而实施这一战略的主要路径是推进文化与科技融合、集聚人才、培育龙头文化企业、创新体制机制和优化文化产业结构。     

Applicability of the Revised Mean Absolute Percentage Errors (MAPE) Approach to Some Popular Normal and Non-normal Independent Time Series

Commonly used Mean Absolute Percentage Errors (MAPE) and the authors’ revised Mean Absolute Percentage Errors (RMAPE) are applied to measure the forecasting accuracy from different Moving Average Methods for independent time series. Simulation results show that both MAPE and RMAPE can only provide sensitive forecasting accuracy measurements on Moving Average Methods when coefficients of variation (c.v.) are smaller than 0.4 or is much greater than 4.0 for those independent time series. For independent time series with moderate c.v.’s, the complexity from the ratios of MAPE and RMAPE will mislead researchers on distinguishing the forecasting accuracies from different Moving Average Methods. The complexity from the ratios will be released only when the c.v. is very small, or when the c.v. is very large. Therefore, when data are from independent time series, the Mean Absolute Deviation (MAD) reveals valid the forecasting accuracies from various Moving Average Methods, but not from MAPE or RMAPE.     

The gender wage gap in Austria: eppur si muove!

We examine the change of the gender wage gap in Austria between 2002 and 2007 using Juhn et al. (Workers and their wages, AEI Press, Washington DC, pp 107–143, 1991) decomposition. We analyze data from Austrian tax records which we merge with social security records and Austrian micro-censuses of the years 2002 and 2007. We find that the gender wage gap declined from 21 % in 2002 to 18 % in 2007. The main determinant of this decline is the relative improvement of women’s unobserved characteristics. The decline of the gender wage gap is also due to women having attained more formal education and to a convergence of men’s and women’s returns to education. Women’s improved educational attainments were partly offset by a shift in the demand for skilled workers that disadvantaged unskilled workers, most of whom are women, resulting in a moderate decrease of the gender pay gap over these years. Robustness checks confirm our results.     

民航灾害的复杂性特征探索

民航灾害作为一种高度复杂的社会现象,它具有非线性、多样性、突发性、随机性、整体性、多变性、统计性和屯规律性等复杂性特征.提出将民航灾害看作一个复杂系统,借助分形理论、混沌理论、人工神经网络等复杂性科学的工具,并结合预警管理方法,对民航灾害的复杂性进行探索,初步构造了民航灾害复杂性研究的理论框架.     

浅谈湿地生态系统健康研究

本文系统的介绍了湿地生态系统的概念、影响其健康的因素、以及湿地健康的评价指标和评价方法。对于湿地生态系统健康的研究有一定指导意义。     

从“三聚氰胺”事件看比利时食品安全法规

比利时王国根据2000年欧盟颁布的<食品安全白皮书>和2006年实施新的<欧盟食品及饲料安全法规>,制定和修改完善了涵盖所有食品类别和食物链各环节的法律制度和措施.本文分析研究了这些法律,并提出有关建议.     

战争报道中的两面信息

战争报道须应对矛盾性信息：有关敌方及其行动或意图的一些好消息,对己方及其行动和意图的一些批评.具有战争宣传特点的战争报道也不能忽略这一信息,而是使用两面信息以抵御之.战争宣传融合矛盾性信息可以加强对读者的效果：表明敌方最终是＂坏的＂,己方是＂好的＂,报道看起来更像平衡的报道,感觉不到宣传的意味.