改革视角下中国新型城镇化红利及其释放路径

作为改革红利的一部分,新型城镇化红利是指在已有城镇化发展基础上,通过协同推进工业化、信息化、农业现代化,优化城镇化布局和形态,以制度创新为手段推进新型城镇化战略后减少的城镇化成本或增加的城镇化收益。在中国的新型城镇化过程中,制度改革创新提高了生产率和要素配置效率,进而释放出改革红利。新型城镇化红利包括五大方面:新人口红利、新土地红利、新产业红利、新生态红利和基本公共服务均等化红利。从改革视角来看,中国主要依靠制度协同创新来释放新型城镇化红利,可能的八条释放路径为:户籍分类制度改革、劳动力分类培养改革、土地确权和土地流转制度改革、生态补偿和耕地保护制度改革、区域合作制度改革、非公资本参与国资项目制度改革、服务业发展改革、权力清单和政绩考核机制等。     

不同储藏条件对稻米蒸煮品质和α-淀粉酶的影响

以稻谷粤农丝苗为原材料,置于4种不同储藏模式下,具体如下:(1)15℃储藏240d。(2)30℃储藏240d。(3)以15℃为开端,与30℃交替储藏(60d交替1次)至240d。(4)以30℃为开端,与15℃交替储藏(60d交替1次)至240d。每隔60d检测1次,比较上述4种储藏模式下,稻米蒸煮品质和α-淀粉酶活力的变化趋势。研究结果表明:随着时间的延长和储藏温度的升高,稻米品质下降;在实验时间内,以低温为开端的变温模式的稻米品质要优于以高温为开端的变温模式,但差距逐渐减小。     

Are nontariff measures and tariffs substitutes? Some panel data evidence

Using new estimates of ad valorem equivalent of nontariff measures (NTMs) over time, this paper examines NTMs and tariffs’ relationship for a sample of 70 economies for 4,949 products at the 6‐digit harmonized system level over the period 2003–2015. A panel data methodology models the lagged adjustment of NTMs to tariffs, consistent with a causal relationship. Trade policy substitution is found when the models are estimated in both levels and changes; with this holding for both OECD and non‐OECD countries, but not for the agriculture sector in OECD countries. Overall, there is a fairly complete substitution between policy instruments in absolute terms.     

Personalized goal-based investing via multi-stage stochastic goal programming

In this paper, we propose a goal-based investment model that is suitable for personalized wealth management. The model only requires a few intuitive inputs such as size of wealth, investment amount, and consumption goals from individual investors. In particular, a priority level can be assigned to each consumption goal and the model provides a holistic solution based on a sequential approach starting with the highest priority. This allows strict prioritization by maximizing the probability of achieving higher priority goals that are not affected by goals with lower priorities. Furthermore, the proposed model is formulated as a linear program that efficiently finds the optimal financial plan. With its simplicity, flexibility, and computational efficiency, the proposed goal-based investment model provides a new framework for automated investment management services.     

基于角色视角的分享经济信任机制研究

基于信任理论，从不同角色视角探究各信任要素对分享经济行为意图的影响。通过构建分享经济信任机制概念模型以及实证检验发现：从需求方视角来看，对个体（供给方）3个维度（能力、正直和善意）的信任、对平台善意的信任以及对产品能力的信任对需求意图产生积极地影响。从供给方视角来看，对个体（需求方）能力的信任和对平台3个维度（能力、正直和善意）的信任对供给意图有正向的影响。需求方更关注人与人之间的信任，而供给方则更看重对平台的信任。通过进一步比较还发现，需求方对平台和个体（供给方）的信任聚焦于善意信任，但供给方则是侧重于对平台和个体（需求方）能力的信任。     

The Valuation Model for a Risky Asset When Its Risky Factors Follow Gamma Distributions

This paper constructed a pricing model for the asset with multi‐risks by specifying the risky factors (i.e., interest rate and termination hazard rates) to follow gamma distributions. The model not only avoids the possibility of the termination hazard rate taking an irrational (i.e., negative) value, but it also makes it easier to derive a valuation formula for a risky asset. Our model can also effortless apply because the parameters of the gamma distribution can easily be estimated from market data. An example using Taiwanese bond data illustrates how the model can be utilized for practical applications. To facilitate understanding of how accurately the different models price risky bonds, we compare their out‐of‐sample pricing errors for different hazard rate specifications assuming normal and gamma distributions. The results show that our pricing formula is realistic and accurate in its applications. Therefore, it should help market participants to accurately price risky assets and to effectively manage complicated portfolios.     

集团企业工作协同管理模型研究

集团企业逐渐成为我国经济发展的骨干和支柱[1]。如何解决好集团企业内部之间的协同管理问题已经成为集团生存发展的瓶颈问题[2]。本文对集团企业协同管理系统进行了深入地分析研究,对企业的发展具有一定的理论指导意义。     

Institutional Monitoring: Evidence from the F‐Score

The extant literature shows that institutional investors engage in corporate governance to enhance a firm's long‐term value. Measuring firm performance using the F‐Score, we examine the persistent monitoring role of institutional investors and identify the financial aspects of a firm that institutional monitoring improves. We find strong evidence that long‐term institutions with large shareholdings consistently improve a firm's F‐Score and that such activity occurs primarily through the enhancement of the firm's operating efficiency. Other institutions reduce a firm's F‐Score. Moreover, we find evidence that, while monitoring institutions improve a firm's financial health, transient (followed by non‐transient) institutions trade on this information.     

深度休闲、游憩专门化与地方依恋的关系研究——以紫金山登山游憩者为例

随着休闲社会的发展,个体的游憩参与行为已成为新的研究课题。通过文献回顾和研究假设,文章构建了由游憩参与者、游憩活动与游憩空间共同组成的概念模型,并通过实证分析,讨论了深度休闲、游憩专门化和地方依恋之间的具体关系。研究发现,深度休闲对游憩专门化和地方依恋均具有显著的正向影响;而游憩专门化对地方依赖具有负向影响,并在深度休闲与地方认同之间扮演着中介变量的角色。研究表明,游憩者的深度休闲特质越明显,对地方依恋的总体程度也越高,主要原因是情感认同的提升;而深度休闲特质越明显的个体,其游憩专门化水平也越高,主要原因是持续的活动涉入促进了认知和行为的专门化。     

谷书堂关于社会主义商品经济理论的探索

文章认为,谷书堂是中国研究社会主义商品经济理论较早的学者之一,其研究社会主义商品经济理论分为20世纪50年代、70年代末至80年代初、90年代三个阶段。关于物质利益和劳动谋生手段是社会主义商品经济原因、社会主义商品经济是中性生产方式、商品经济与公有制双向调整论是谷书堂社会主义商品经济理论的基础。