国外AVM技术在批量评估中的应用

AVM(自动评估模型)是批量评估方法体系的关键技术。本文系统地介绍了AVM的技术原理,并论述了模型设定理论层面与模型校准技术层面以及两者相互的联系,提出了开发和应用国内AVM,建立税基批量评估方法体系的一些构想。     

中国邮政储蓄制度变迁：历史与趋势

邮政储蓄自恢复以来得到了迅速发展，但其负外部性逐渐凸现，从而影响到了中国经济发展的整体结构和金融体系的正常秩序。邮政储蓄制度改革已成为中国金融体系改革所关注的焦点之一，问题的产生在于背后的制度因素，制度变迁应该是改革邮政储蓄机构的根本路径。就邮政储蓄制度的现实而言，机构银行化是一个取向，但也并非一蹴而就，而表现为一个过程。改革推动者应该遵循整体利益大于制度成本的原则设计制度安排．     

胜利油田集输系统常见腐蚀研究

分析了胜利油田集输系统常见的腐蚀类型和腐蚀机理，分别阐述了各种局部腐蚀的防护措施，并综合对比了各种防腐方法的优缺点．指出根据不同区块的实际腐蚀环境、介质及工艺条件，因地制宜、有的放矢地制定经济、合理的防腐措施是减缓和控制腐蚀的有效途径。     

绿色金融发展与产业结构优化升级研究 —基于江西省的实证

近年来,随着绿色金融体系建设上升为国家战略,我国绿色金融发展取得了不少 令人瞩目的成果。在我国经济发展进入新常态和大力倡导供给侧结构性改革的时代背景下,江 西省作为首批建设绿色金融改革创新试验区,研究江西省绿色金融发展促进产业结构调整升 级对加快生态文明体制改革和建设美丽中国具有重要的现实意义。在分析绿色促进产业结构 调整升级的机制之后,通过构建灰色关联模型对江西省2008~2016年绿色金融与产业结构关联 度进行实证分析。最后,结合江西省绿色金融发展的实际情况,提出了相应的对策建议以促进 江西省产业结构调整升级。     

The tortoise and the hare: the impact of employment instability on firm performance

The main objective of this study is to assess the influence of employment instability on firm performance in a sample of publicly traded firms. Competing theoretical arguments are considered with regard to likely outcomes associated with employment instability. A large sample of cross‐sectional time‐series data is then analysed using generalised estimating equations (GEE) regression techniques. Results indicate that employment instability is negatively associated with firm performance, although the relationship is also demonstrated to be quadratic (an inverse U‐shaped relationship). This suggests that the main relationship varies depending upon the level of employment instability. Industry characteristics are also examined as moderators of this main effect. The results suggest a disordinal interaction effect for industry differentiation, where employment instability is negatively associated with firm performance for firms in highly differentiated industries and positively associated in less differentiated industries.     

食品中内源性甲醛的产生机理及控制技术

甲醛属于致癌、致畸物质,添加到食品中会对食用此食品的人造成伤害。本文综述内源性甲醛在各类食品中的来源、形成机理、影响因素及其毒性控制技术。以期在食品安全生产过程中,更好地减少和控制各类食品中内源性甲醛的含量。     

高等教育的发展趋势及对策

当前国际高等教育主要呈现这样几个发展趋势:国际化、大众化、市场化、信息化、综合化。面对这些特征,各国纷纷采取新对策,以取得发展高等教育的主动权。顺应国际高等教育的发展趋势,选择我国高等教育的科学发展策略,已是不二选择。     

Public bicycle as a feeder mode to rail transit in China: The role of gender,age, income,trip purpose,and bicycle theft experience

A marriage between public bicycle and rail transit presents new opportunities for sustainable transportation in Chinese cities. To examine determinants of public bicycle usage for rail transit access, an intercept survey of feeder mode choice among rail transit users was conducted near rail stations in Nanjing, China. Mode choice models were estimated with five feeder mode alternatives, including car, bus, walk, private bike, and public bike. By differentiating between public and private bicycle modes in the mode choice models, the study reveals the effects of personal demographics, trip characteristics, and station environments on public bicycle usage for rail transit access. Results show that female, older, and low-income rail commuters are less likely to use public bicycle to access rail transit. Rail commuters with bicycle theft experience and making school- or work-related trips are more likely to use public bicycle to access rail transit. Land use variables are largely insignificant in this study except that density shows a positive relationship with walking to rail transit. The results on demographic differences raise equity concerns when it comes to investing in public bicycle systems. Policy implications are discussed for Chinese cities to equitably boost public bicycle integration with rail transit.