当前世界经济面临的风险及其影响

2008年全球经济面临的风险是亚洲金融危机以来最严重的一次。全球经济减速，次贷危机继续恶化，油价上涨，美元贬值压力加大，通货膨胀死灰复燃。他们相互交织在一起对各国经济决策构成了极大的挑战。本文对其未来的发展趋势及其对中国经济的影响做出了一种分析。     

Using Market Structure to Regulate a Vertically Integrated Monopolist

A natural monopolist whose cost is private information produces a good which is combined with another good that can be produced by the monopolist or by other firms. The agency that regulates the monopolist can impose any of several different market structures in the industry: integrated monopoly, vertical separation with free entry downstream, or liberalization downstream (both integrated and independent production). When several firms produce downstream, a Cournot quantity-setting game with free entry determines the market price. We derive the optimal contracts to offer the monopolist under all three market structures and examine the influence of downstream cost differences on access prices.We then study the optimal regulatory policy where the regulator can condition the downstream market structure on the monopolist's cost report to the regulator. The optimal regulatory policy awards a monopoly to a low-cost upstream firm, but requires free entry downstream if the monopolist reports high upstream costs. Thus, the choice of market structure is an additional tool to limit rent extraction by the monopolist. Simulation analysis reveals the possibility of significant welfare gains from this additional regulatory tool.     

故居民风千年根

春节前后，我偶然来到泰山脚下新泰市的大寺村——一个平凡而简单的小山村。走近村里一堵堵青青白白的石砌墙，一座座茅草覆顶的旧门楼，看到狗儿、猫儿、行人，安闲的在胡同里青石板上踱步，直觉得好像从陶渊明的诗句里跑出来的影像一般。家家户户的大门上贴着鲜艳的对联、门神、五彩的门笺。孩子们放鞭炮、捉迷藏；83岁的张老太和小孙子推起碾子，洒下一串欢笑     

Exploring the mediating role of utilitarian value and hedonic value in the formation of oppositional loyalty in online communities

Our research expands the scope of the research on oppositional loyalty from brands to online communities. Online communities allow members to freely express their opinions and promote the occurrence of oppositional loyalty behaviours towards the communities. Oppositional loyalty is defined in this article that, for the purpose of strengthening the market position of their preferred community, members of the online community may express negative views or even show oppositional behaviour towards adversarial communities. In view of social capital theory, the study examines the effect of hedonic value and utilitarian value on oppositional loyalty in online communities. The results show that only hedonic value significantly affects oppositional loyalty; hedonic value mediates the effect of the three dimensions of social capital (network ties, identification, and common language) on oppositional loyalty. The study identifies that community type moderates the impact of social capital (identification and common language) on hedonic value but does not moderate the effect of social capital on utilitarian value. Finally, we find that members' oppositional loyalty towards their community can promote their community participation. This research provides recommendations for online community managers to manage and benefit from members' oppositional loyalty.     

论人的全面发展的历史必然性与当代价值——以马克思异化劳动理论为视角

马克思把哲学的"异化"概念与经济学的"劳动"概念结合起来,形成了"异化劳动"理论。马克思提出,在资本主义制度下私有制的生产关系造成了私人利益和公共利益的分裂,劳动发生了异化,结果使人的自由劳动变成维持人的肉体生存的手段。异化劳动理论蕴含着人的全面发展思想:异化劳动扬弃的过程是实现人的全面发展的过程、人的全面发展是对异化劳动的全面超越,是合乎客观规律的历史必然性。深入研究马克思的异化劳动理论,对于学习和理解党的十八大报告提出的坚持科学发展观的指导思想具有重要的现实价值和实践意义。     

高增长低就业问题研究综述

本文从我国是否存在就业悖论、建成就业悖论的原因、如何化解就业悖论三个层面,对近几年来国内学术界探究我国就业悖论问题的文献进行了简要梳理.     

我国草地农业体系建设和未来发展方向

本文在梳理国内外草地农业发展历程和概况的基础上，系统分析了我国草地农业发展存在的主要问题，并提出我国草地农业体系建设的思路和加速草地农业发展的措施。     

农业水土资源耦合研究进展与展望

目的 寻找农业水土资源耦合研究热点、梳理研究发展历程、统筹和归纳研究体系,明晰未来研究发展方向和突破点,助力农业水土资源可持续利用。方法 文章通过定性与定量研究相结合,借助CiteSpace软件对1992—2022年农业水土资源耦合研究热点、发展历程进行初步分析,之后借助文献归纳法进一步综述研究体系。结果 研究聚焦于农业水土资源利用效率及效用,总体上经历了从土壤理化性质到水土资源优化配置、从小尺度作物种植到大尺度流域治理的发展历程,研究体系由3个研究基本面和6个研究基本点构成,研究基本面分别为水土资源匹配格局、水土资源利用过程、水土资源状态响应,即“格局—过程—响应”的农业水土资源耦合研究体系。结论 水土资源匹配格局方面需进一步明晰水土资源空间分异特征并加强二者物理交互过程和时空变异规律的研究,建议未来聚焦于识别水土资源配置差别并建立实践性的匹配等别标准;水土资源利用过程方面土地利用变化后水文过程响应研究尚待补充,建议未来可深入探索土地利用与水文过程的二元互馈机理;水土资源状态响应方面气候变化下需注意从气象指标入手探究农业生产中水土资源的关系,建议未来加强气候变化背景下低效利用问题的动态监测及预测模拟。