Non-renewable resources in the long run

We model a competitive economy in which production is dependent on labor and a non-renewable resource, the stock of which is inhomogeneous. We solve the model analytically and show how—in infinite time—the economy moves away from an initial balanced growth path (b.g.p.) and towards a mature b.g.p. The characteristics of the initial b.g.p. match historical observations of slowly declining resource price and consumption growth tracking global product. The mature b.g.p. depends on the nature of the stock; the more steeply cross-sectional area declines with depth, the faster the rate of price increase. We show how the theoretical model may be adapted and parameterized to explain and predict the evolution of markets for specific resources, applying the model in two cases, copper and petroleum.     

公益性社会组织公信力研究

公益性社会组织公信力是公益性社会组织获得利益相关者和社会公众信任的能力,体现组织与利益相关者和社会公众的互动关系,是公益性社会组织生存和发展的生命线。我国公益性社会组织公信力缺失的原因在于法律和政策管理错位,公益性社会组织欠缺合法性和自主性,内部治理和发展能力不足,缺乏公开性和透明度,外部监督和评估机制不完善,活动偏离公益使命。为此,急需改善公益性社会组织管理的法律和政策环境,强化其信息披露和内部治理,健全社会监督和问责机制。     

影响农村和谐的因素及其法治对策

农村民主政治不健全、经济文化落后、法律制度不完善、社会矛盾激化是影响农村和谐的主要因素。构建农村和谐,必须加强农村法治,用法治来健全农村民主政治,发展农村经济文化,完善农村法律制度,化解农村社会矛盾。     

金融发展地区差异对投资的影响——基于我国省域综列数据的实证研究

文章利用1995￣2004年全国28个地区的统计数据,构建了我国省域金融发展综列数据集,并运用固定效应模型对地区金融发展给地区投资带来的影响进行了实证分析。文章认为,我国地区层面的金融发展对地区投资仍然存在正向影响;地区金融发展促进投资增长呈现明显的地区差异;对外开放对各地区的投资增长有显著作用,东部略大,中部次之,西部略小;投资与经济增长之间没有明显的加速提升效应;我国金融改革的当务之急是完善金融结构的功能,改善金融体系功能低下的现状,提高投资效率。     

万古霉素高产菌株选育及发酵配方优化

为了提高东方拟无枝酸菌产万古霉素的发酵单位,降低生产成本,采用紫外诱变、常压室温等离子体诱变对东方拟无枝酸菌出发菌株V19-02进行诱变处理,通过筛选链霉素抗性突变菌株,选育高产菌株;通过对发酵培养基中碳源和氮源进行筛选,选取葡萄糖、淀粉、低温豆粉、酵母粉4个因素进行均匀设计。结果表明,获得的高产菌株V19-1-07摇瓶发酵单位提高33.7%,且具有良好的传代稳定性;优化后的培养基配比质量分数为葡萄糖8.0%、淀粉1.0%、低温豆粉1.0%、酵母粉4.0%、氯化钠1.0%、磷酸二氢钾0.1%;小试结果证明,优化配方可使50 L罐发酵单位平均达到14 110 μg/mL,比原始配方提高了28.9%。因此,研究获得的高产菌株V19-1-07可应用于万古霉素工业化发酵生产,以帮助企业降低成本,进一步提高竞争力。     

The role of stochastic volatility and return jumps: reproducing volatility and higher moments in the KOSPI 200 returns dynamics

This paper investigates the role of stochastic volatility and return jumps in reproducing the volatility dynamics and the shape characteristics of the Korean Composite Stock Price Index (KOSPI) 200 returns distribution. Using efficient method of moments and reprojection analysis, we find that stochastic volatility models, both with and without return jumps, capture return dynamics surprisingly well. The stochastic volatility model without return jumps, however, cannot fully reproduce the conditional kurtosis implied by the data. Return jumps successfully complement this gap. We also find that return jumps are essential in capturing the volatility smirk effects observed in short-term options.

The Negligence Rule in the Presence of Judicial Corruption and Social Norms

This paper investigates the phenomenon of judicial corruption and incorporates it into Polinsky, A. M. (1980). Strict liability vs. negligence in a market setting. American Economic Review, 70, 363–367 framework so as to analyze the efficiency of the negligence rule. By shedding light on the role of social norms in regard to the phenomenon of judicial corruption, this analysis provides implications for policy. First, more prevalent corruption at the status quo tends to intensify the extent of the corruption itself and, as a result, the effectiveness of the government’s corruption enforcement is greatly lessened. This implies that an excessively lenient policy of corruption may result in an uncontrollable consequence; once corruption becomes rampant, it is costly to bring it down. Of great importance, in the presence of such a corruption effect, the social optimum cannot be achieved based on the negligence rule and the equivalence between the strict liability and negligence rule fails. Secondly, the attitude of the society toward a corrupt judge plays a crucial role in governing the effectiveness of an efficient wage arrangement. If the society can fully accept a corrupt judge, corruption will never be controlled even with the incentive wage scheme.

试析法治路径的悖论

中国法治的路径选择存在着悖论性问题.以一种语境化的分析方法,在对"自治"与"他治"、"政府主导"与"民主参与"、"确定"与"不确定性"三组范畴的比对中,辨析法治路径的悖论性内容,借以补正与完善法治路径选择中的某些理论问题.     

应力函数法计算蠕变地层套管的载荷

本文采用应力函数法研究蠕变地层中套管载荷的分布规律。将套管看成弹性体,把地层看成无穷大的粘弹性体,根据开尔文模型平面应变的本构方程,极坐标形式的平衡方程、变形协调方程及几何方程,采用应力函数法,解出了均匀地应力条件下蠕变地层套管载荷的解析解。为寻求非均匀地应力条件下蠕变地层套管载荷的解析解提供了理论参考。     

Union–firm bargaining: Order of play and efficiency

This paper shows that a modified alternating offers Rubinstein model can provide a Pareto superior outcome in the context of the right-to-manage union–firm bargaining. Two examples of bargaining protocols that yield a superior outcome are provided. In the first example, the parties engage in a game in which the order of play is determined as part of the bargaining. We show that the game has a unique subgame perfect equilibrium in which the firm always moves first in the wage bargaining game. The equilibrium wage is, therefore, unique. In the second example, we examine a two-part-tariff alternating offers bargaining protocol, where the parties bargain over the wage and transfer payments. We show that this bargaining protocol has a Pareto efficient, unique subgame perfect equilibrium. Thus, although the parties do not bargain over the level of employment, the outcome under this protocol is, nevertheless, socially optimal.