基于结构突变理论的我国货币法流通速度的长期趋势

本文利用结构突变理论，对我国狭义、广义货币流通速度的数据生成过程进行了实证研究，结果表明：改革开放以来，我国狭义、广义货币流通速度服从于单位根过程，数据生成过程并未发生结构突变，因而基本保持了持续下降的“稳定态势”。     

Reframing gender and feminist knowledge construction in marketing and consumer research: missing feminisms and the case of men and masculinities

Abstract

Gender has been theorised and studied in many ways and across different disciplines. Although a number of these theorisations have been recognised and adopted in marketing and consumer research, the significance of feminism in knowledge construction has largely remained what we would call ‘unfinished’. Based on a critical reframing of gender research in marketing and consumer research, in dialogue with feminist theory, this article offers theoretical and practical suggestions for how to reinvigorate these research efforts. The analysis highlights dominant theorisations of gender, relating to gender as variable, difference and role; as fundamental difference and structuring; and as cultural and identity constructions. This reframing emphasises various neglected or ‘missing feminisms’, including queer theory; critical race, intersectional and transnational feminisms; material-discursive feminism; and critical studies on men and masculinities. A more detailed discussion of the latter, as a relatively new, growing and politically contentious area, is further developed to highlight more specifically which feminist and gender theories are mainly in use in marketing and consumer research and which are little or not used. In the light of this, it is argued that marketing and related disciplines have thus far largely neglected several key contemporary gender and feminist theorisations, particularly those that centre on gender power relations. The potential impact of these theoretical frames on transdisciplinary studies in marketing and consumer research and research agenda(s) is discussed.     

A Typology of Communicative Strategies in Online Privacy Policies: Ethics, Power and Informed Consent

The opaque use of data collection methods on the WWW has given rise to privacy concerns among Internet users. Privacy policies on websites may ease these concerns, if they communicate clearly and unequivocally when, how and for what purpose data are collected, used or shared. This paper examines privacy policies from a linguistic angle to determine whether the language of these documents is adequate for communicating data-handling practices in a manner that enables informed consent on the part of the user. The findings highlight that corporate privacy policies obfuscate, enhance and mitigate unethical data handling practices and use persuasive appeals to increase companies’ trustworthiness. The communicative strategies identified provide starting points for redesigning existing privacy statements with a view to communicating data handling practices in a more transparent and responsible manner, laying the groundwork for informed consent.     

宽带随机混沌雷达高速目标速度估计与成像

随机混沌具有真随机性、对初值敏感、易于产生和控制等特点,频率步进信号易于工程实现和处理,结合两者的优势,提出了一种载频随机步进的随机混沌信号(RSCFSCS)模型,用于高速目标的速度估计和距离维高分辨成像。首先,通过非周期函数激励非线性系统,产生不可预测的随机混沌信号(SCS),经频率调制后用作基带子脉冲。同时,将SCS通过映射变换得到跳频编码(FHC),用来决定调频脉冲串的载频步进。RSCFSCS 速度估计包括粗搜索和精搜索,粗搜索采用固定步长,保证速度偏差小于速度分辨单元,而精搜索采用黄金分割搜索算法可得到精确的速度估计。最后,子脉冲经相干合成形成宽带信号,实现高分辨距离成像。数值仿真表明提出的信号模型和处理算法性能良好。     

货币市场基金影响货币流通速度吗

货币流通速度不仅受实体经济影响,而且受虚拟经济影响,本文运用实证分析方法探讨货币市场基金对货币流通速度是否产生影响,结果表明货币市场基金收益率变动是货币流通速度变动的格兰杰原因,两者正相关,可根据货币市场基金收益率和一年期国债收益率预测货币流通速度,货币政策实施效果受货币流通速度影响,管理者可通过调整货币市场基金政策稳定货币流通速度。     

食品安全管理中HACCP技术的理论研究和应用研究:文献综述

通过对国内外文献进行综述,总结了HACCP技术在食品安全管理中的理论发展、实施意义、影响因素和实施方法,归纳了其实施的障碍和措施,并对目前HACCP技术的行业应用现状进行了评述。据此提出加强HACCP技术的理论研究、创新HACCP技术实施方法的思路。     

三维渐进损伤的复合材料层合板低速冲击模型

为了有效反映复合材料层合板面内和层间的非线性损伤,建立了一个新型的损伤模型,该模型基于三维实体单元和内聚力单元可以有效分析复合材料层合板在低速冲击作用下的层内和层间非线性失效行为。对于复合材料层合板面内损伤,以改进的Hashin失效准则作为起始损伤准则,提出了一种基于能量释放率的损伤变量指数渐进演化模型,既描述了复合材料损伤的渐进失效过程,又避免了材料刚度突然下降导致刚度矩阵奇异的不足,同时引入特征长度来降低结果对网格的依赖性,最终建立了单层板的渐进损伤非线性分析模型;针对层合板的层间损伤,采用内聚力单元来模拟,通过结合传统的应力失效准则和断裂力学中的能量释放率准则定义了界面损伤演化规律。该损伤模型通过商用有限元软件ABAQUS/Explicit 的用户子程序VUMAT实现,并使用该模型对碳纤维增强环氧树脂复合材料层合板在横向低速冲击作用下的损伤和变形行为进行预测分析。数值仿真的结果与试验结果进行了比较,吻合良好,验证了该模型的有效性。     

陕西省旅游手册营销图片内容分析

旅游手册成为各地开展目的地营销竞相采用的一个常用工具。以陕西各地旅游手册视觉图片为研究样本,构建图片空间场景-图片人物主体分类指标体系,对陕西省旅游符号展开内容分析。结果发现总体上陕西旅游地符号与其对象客体大致吻合,局部存在一些不和谐符号。陕西各地旅游宣传符号都试图营造出一幅"完美"旅游场景,构建一个精致美好的等待游客光临的空间。旅游地在生产者对旅游地宣传符号进行选择和构建过程中,已经以一种商品形式被制造出来,从而间接对游客及目的地产生一系列影响。     

基于蚁群—关键链的资源受限项目调度

针对资源约束下的多项目调度问题,在前人提出的有效启发式算法研究路径基础上,提出了基于蚁群—关键链的多项目资源调度算法：采用了蚁群算法找到关键链,然后利用关键链的“剪贴法”,在该计划中嵌入输入缓冲和项目缓冲,保证项目计划在非确定环境下的稳定执行,并能更准确地确定项目的完工时间.     

铁路行包快运节点等级划分及布局方法研究

铁路行包快运节点的等级划分是其布局优化的基础，针对目前节点等级划分大多依靠经验而不够客观的问题，采用重要度计算和聚类分析的方法，对全国行包快运节点的等级进行划分，并在此基础上给出节点布局的方法和建议。