Revisiting the risk/return relations in the Asian Pacific markets: New evidence from alternative models

This paper examines the risk/return relations in eleven Asian Pacific stock markets and explores if the 1997 Asian financial crisis significantly influenced market behavior in the region. We use a plain vanilla time-series regression approach as well as various GARCH models. Although results significantly vary across model specifications, the overall evidence from GARCH models supports a significantly positive risk/return relation in several markets but only prior to the Asian financial crisis. These results accord with Glosten et al. (1993) and Harvey (2001) and suggest that the relative risk aversion is sensitive to both model specifications and structural breaks.     

Comparing theories to explain e-commerce adoption

E-commerce is a strategy for rapid growth, especially by small and medium sized businesses (SMEs). However, the adoption rate of e-commerce by SMEs in Latin America is still undersized. The authors compare the theory of planned behavior (TPB) and the theory of reasoned action (TRA) using structural equation modeling to determine which is better at predicting e-commerce adoption intentions among 210 SME managers/owners in Chile. Contrary to previous research with American respondents, the study does not find significant differences between the two theories. Thus, academics should select the more parsimonious model (TRA) to study e-commerce adoption issues in developing countries.     

基于退出机制的供应链建模与分析

目前,供应链系统呈现出一种复杂网状结构,可以借助复杂网络理论对其进行研究。本文探讨了供应链网络的形成过程及相应的拓扑结构,通过分析网络节点的产生、衰亡及退出状况,建立了一种择优连接模型以描述其演化过程。结果表明该模型服从指数γ=3的幂律分布,这与实证结果比较吻合。     

When do B2B brands influence the decision making of organizational buyers? An examination of the relationship between purchase risk and brand sensitivity

The dominant perspective on organizational buying behavior suggests that buyers tend to rely on objective criteria when making product choice decisions and that the potential influence of subjective cues, such as brands, on buyer decision making decreases with increasing risk. An alternative perspective, confirmed in this study by in-depth interviews with various managers, suggests that brands serve as a risk-reduction heuristic, whereby the influence of brands on decision making increases as a function of risk. Building on risk and information processing theories, this research builds on these complementary perspectives to propose that risk and brand sensitivity relate in a U-shaped manner, where brand sensitivity is highest in relatively low- or high-risk situations. The results of scenario- and survey-based field studies—involving 206 and 180 members of buying centers, respectively—suggest that both perspectives have merit and support the proposed nonlinear relationship. Moreover, the findings reveal that the risk-brand sensitivity relationship is moderated by competitive intensity, such that the linear (negative) and quadratic (positive) effects are stronger when competitive intensity is low.     

西安市房地产市场投机行为度研究

近年来,我国房地产市场日渐升温,许多城市出现房地产投机行为严重的现象,造成房价的不断上涨。文章利用西安市房地产市场2006-2011年的月度统计数据,测算出西安市房地产市场的投机行为度为0.322,反映出西安市房地产市场存在一定程度的投机泡沫。因此,建议加强房地产市场的调控力度,通过开征物业税和增加保障性住房等措施来抑制投机行为。     

On structural inelasticity of modal substitution in freight transport

At the European level there is an increasing focus on how freight transport can be moved from trucks on roads to more environmentally friendly modes such as rail and ship. A large proportion of the transport services between OD pairs, however, cannot be substituted since there is only one alternative available. The paper investigates the magnitude of this “structural inelasticity” of modal substitution in freight transport due to a sparser layout of rail and ship-based freight networks compared to road. In the analysis we use a recent Scandinavian freight demand model covering more than 800 zones. We find that the structural inelasticity is very significant - in particular for transportation over less than 500 km. Moreover, the inelasticity varies greatly with commodity groups and between OD pairs, and it depends strongly on the port and rail infrastructure. The results suggest that pure charging instruments (road pricing for trucks) in many regions will have limited mode substitution impacts. However, if combined with structural changes in terms of improved infrastructure for rail and ship, impacts may be greater.     

长江三角洲对外开放的区域差异及成因分析

选择出口依存度和资本依存度2个指标构建对外开放度指数,对长江三角洲15个城市的对外开放度进行测算.结果表明,长江三角洲各市的对外开放度差异很大,可以划分为3个层次:高开放度城市(苏州、上海、宁波、无锡)、中等开放度城市(嘉兴、杭州、绍兴、南京、常州、南通)和低开放度城市(舟山、湖州、镇江、扬州、泰州).造成长江三角洲对...     

建立我国贸易调整援助制度的构想

随着我国加快融入全球贸易自由化的进程,日趋激烈的进口竞争致使国内相关产业的安全问题越来越突出,所以我国需要制定新的贸易制度以有效应对因进口贸易自由化而产生的产业损害和结构调整问题。作为制度选择之一,美国贸易调整援助制度给我国带来了重要的经验启示,某些具体规则对构建符合国情的TAA制度具有重要的借鉴价值。在当下加快产业结构调整的背景下,构建我国TAA制度不仅是必要的,而且是可行的。因此,必须对该制度的几个基础性、根本性的问题进行深入研究,从立法定位、立法目标、基本原则与立法模式的角度提出制度设计的基本设想。     

“五个重庆”建设效果的阶段性评估与思考

对重庆市民的调研表明,“五个重庆”建设在提高重庆影响力、增强市民信心和认同感等方面效果明显,市民对其成效普遍认同,并认为“五个重庆”建设意义重大,具有推广价值;其中,“森林重庆”建设成效最为显著,而“畅通重庆”、“平安重庆”、“健康重庆”、“宜居重庆”依次减弱。“五个重庆”理念体现了城市的多元化和可持续化发展,也坚持了以人为本,为城市发展指明了方向,对重庆市城市发展具有积极意义,也值得其他城市借鉴。重庆应持续、统筹推进“五个重庆”建设,人人参与“五个重庆”建设。     

基于粗糙集的团购网站销售额影响因素分析

运用粗糙集算法,对所搜集的不确定甚至不完整的有关团购网站的信息进行推理,结论是：相对平均原价和团购种类,团购活动期数、购买人次、平均折扣率和热门城市数量对团购网站销售额的影响更重要;团购活动期数和购买人次越多,销售额越高;但平均折扣率和热门城市数量的多少对团购网站销售额的影响不大。可见,相对于价格,诚信在团购网站发展中起到更重要的决定作用;团购网站应通过团购导航网吸引更多的顾客,并实施差异化发展策略,进而以优质服务提高顾客的忠诚度。