Public Policy of Urban Mobility: Impact of the History and Practices on Young Drivers’ Social Representation of 30 km/hr

The research is part of the project of generalization of the 30 km/h in Angers (France) that funded the study. It aims at providing material to build awareness campaigns for young drivers. The goal is to understand their representations of the 30 km/h within the structural approach of social representations. We focus on the “calling into question” technique in order to confirm the central core composition. The sample is composed of French students living in Angers. Results reveal the role of both historical aspects and the experience of driving in the structuration of the representation. Drivers and non-drivers do not have the same representation of the 30 km/h. Men and women share the same representation under the definition of the central core theory. But our results highlight peripheral differences related to individuals’ practices. Finally, we discuss the definition of representational elements and we explain the relevance of this study for communication.     

气质联用法检测水产品中己烯雌酚含量并用液相色谱串联质谱验证

改进了水产品中己烯雌酚的检测方法。样品用乙酸乙酯提取,HLB固相萃取柱净化,BSTFA-TMCS吡啶溶液80°C衍生;经过HP-5MS（30m×0.25mm,0.25μm）毛细色谱柱分离,再经过单四级杆质谱仪选择离子扫描（m/z：383、397、412、413）确定两种结构的衍生物,用气质联用仪检测其衍生物从而间接检测己烯雌酚。以反式衍生物做定量物质,在5-180μg/kg浓度范围获得良好线性（R=0.995）;3个添加浓度（1、2、5μg/kg）下的平均回收率为90.15%-92.82%,标准偏差为6.7%-9.3%。阳性样品经过乙酸乙酯提取后吹干,HLB固相萃取柱净化,甲醇定容后,用配备RBAXSB-C18柱（2.1×150mm,3.5μm）的高分辨率液相色谱串联质谱仪进行验证,确保检测的可靠性。     

The heuristic‐systemic model of sustainability stewardship: facilitating sustainability values,beliefs and practices with corporate social responsibility drives and eco‐labels/indices

Using a framework from the heuristic‐systematic model and the value‐belief‐norm (VBN) theory, this study tests consumers’ systematic conjunction of sustainability values, beliefs and practices, and examines the heuristic influence of sustainability stewardship on the consumers’ VBN framework. In this study, sustainability stewardship within the textile and apparel industry refers to approaches that can facilitate the corporate social responsible (CSR) drive and eco‐labels/indices in corporate sustainability practices. Data from 239 US college students were analyzed using a structural equation modeling method. The findings confirmed that only the CSR drive is significant as heuristic sustainability stewardship in facilitating the consumer's systematic process in the VBN framework, while eco‐labels/indices do not moderate consumers’ sustainable practices. In particular, the current CSR drives in the textile and apparel industry strengthen consumers’ values in the altruistic, self‐enhancement and biospheric dimensions, and, further, lead to the sustainability practices of eco‐citizenship, green consumption and green product purchasing, through the mediation of proenvironmental belief. Comprehending these dynamics can empower marketers and researchers to devise pertinent ideas and practical applications of sustainability stewardship to academia and to the textiles and apparel industry.     

WTO/TBT框架下纺织品与服装护理标签壁垒应对的法律对策

通过立法规范纺织品与服装护理标签,是发达国家保护国际贸易的重要手段之一,也是 WTO/TBT 协议的基本要求。其重要性自不待言。但反观我国,在这一方面问题颇多。通过对 WTO/TBT 协议有关内容的简要解读,以及中外纺织品与服装护理标签制定的比较,就如何应对国外纺织品与服装护理标签壁垒提出自己的思考和建议。     

Top management conservatism and corporate risk strategies: Evidence from managers' personal political orientation and corporate tax avoidance

We investigate whether managers' personal political orientation helps explain tax avoidance at the firms they manage. Results reveal the intriguing finding that, on average, firms with top executives who lean toward the Republican Party actually engage in less tax avoidance than firms whose executives lean toward the Democratic Party. We also examine changes in tax avoidance around CEO turnovers and find corroborating evidence. Additionally, we find that political orientation is helpful in explaining top management team composition and CEO succession. Our paper extends theory and research by (1) illustrating how tax avoidance can serve as another measure of corporate risk taking and (2) using political orientation as a proxy for managerial conservatism, which is an ex ante measure of a manager's propensity toward risk. Copyright © 2014 John Wiley & Sons, Ltd.     

超声波、碱、超声波/碱预处理污泥对污泥水解效果的影响

为了提高污泥水解产酸过程中的挥发酸产量,获取污水脱氮除磷所需的碳源,以石家庄市栾城污水处理厂二沉池污泥为研究对象,采用超声处理、碱性调节、超声处理与碱性调节组合等3种方式对污泥进行预处理。通过测定预处理污泥水解酸化过程中的挥发酸、氨氮、总氮、总磷、SCOD的浓度,对预处理污泥水解酸化过程中的各指标的变化进行分析。结果表明,当超声波投加的声能密度为0.55W/mL,pH值为9,超声作用时间为4min时,水解酸化在第4天时挥发酸总质量浓度达到最大值226.7mg/L。     

A Comparison of Residents' Perceptions in Two Cruise Ports in the Mediterranean Sea

This paper examines residents' perceptions of a wide set of externalities exerted by the development of cruise tourism. The research involved data collection in two ports located in the two largest Mediterranean islands, Sicily and Sardinia, during the summer peak of the cruise season 2011. These two cruise destinations are especially interesting as they are characterized by a distinct life cycle. The empirical findings show that the two groups of residents have statistically equal perceptions on cruise activity in their destination. A correspondence analysis shows that residents have an overall positive attitude on the development of cruise tourism with respect to social, cultural and economic impacts. Nevertheless, they also feel that cruise activity has a negative impact, especially on the environment. Heterogeneity in occupation is explicitly taken into account. These findings provide directions for local policy‐makers. Copyright © 2012 John Wiley & Sons, Ltd.     

文化传媒上市公司全要素生产率的Globe Malmquist 研究

采用Global Malmquist指数研究我国26家文化传媒上市公司2006~2012年全要素生产率,结果表明:从总体上来说,文化传媒上市公司的全要素生产率(GM)、技术效率(EC)、技术进步指数(BPC)均呈现上下波动趋势。从平均水平来看,全要素生产率呈U型变动,而技术效率(EC)指数和技术进步(BPC)指数的平均水平变动不太稳定,说明我国文化产业的竞争力没有形成核心力,内生增长的方式需进行转型。     

Airport traffic complexity and environment efficiency metrics for evaluation of ATM measures

For a given (current or planned) traffic demand, different air traffic management measures could result in different airport traffic complexity and efficiency. This paper presents the research on the relationship between airport traffic complexity and time and environmental efficiency for different air traffic control (ATC) tactics applied to the given or planned airport layout. Emphasis is placed on the evaluation of airport traffic complexity, aircraft fuel consumption, gas emissions and time efficiency for different ATC tactics and/or airport airfield layouts. For busy airports during peak hours, arrival queuing delays, taxi-in, taxi-out times and departure queuing delays increase, which induces additional unnecessary fuel consumption, gas emission and time inefficiency. In order to find a tool which could indicate potential delay generators, a measure of airport traffic complexity – called Dynamic Complexity is proposed. Experiments were performed for airports with different airfield layouts, for different traffic demands and ATC applied tactics using SIMMOD simulation model. Traffic situations were analyzed and delays were measured. The values of airport traffic complexity, fuel consumption and gas emissions were also determined. A comparative analysis of the results show: first, the proposed airport traffic complexity metric quite satisfactorily reflects the influence of traffic characteristics upon the environmental state of the system, and second, different ATM strategic and tactical measures (airport airfield infrastructure development and applied ATC tactics) could significantly reduce traffic complexity and increase time and environmental efficiency at the airport.     

Social Marketing: Using Stages of Change Model to Assess HIV/AIDS Testing Intentions Among University Students in Ghana

This research sought to utilize the stages of change model to assess HIV/AIDS testing intentions among university students in Ghana. A quantitative research method using a questionnaire based on a random sampling method was employed to interview 167 students of the University of Ghana Business School in Accra. The analysis of variance and one-sample t-test statistical methods were employed to establish the relationship between variables. The study found that most university students in Ghana (80.9%) are at precontemplation, contemplation, and preparation stages. This suggests that social marketing intervention programs encouraging university students to know their HIV/AIDS status have not been effective, since most university students in Ghana have not yet taken action to test for HIV/AIDS. The study also found some university students at more than one stage at a time.