从《明公书判清明集》看宋代土地交易制度

众所周知,两宋从开国之初就确立了＂不抑兼并＂的土地政策,促进了土地的迅速流转,到南宋时期作为不动产的土地已经成为最大宗的交易商品。《明公书判清明集》作为南宋中后期的一本判词集,为人们提供了大量有关涉及土地交易纠纷的判例和信息,从而使人们能够从司法实践上进一步了解宋代土地买卖、典当、租赁的现实情况和特点。     

风险资本能改善风险投资企业治理效率吗?——一个盈余管理视角

从风险资本积极投资者的角度研究了风险资本投资企业的公司治理结构对风险投资企业创业板上市时盈余管理的影响。实证结果表明,风险投资企业公司治理结构中仅有董事会规模对公司盈余管理有抑制作用;独立董事比例、风险资本董事比例、监事会规模和外部监事比例对公司盈余管理都没有显著影响。同时,董事会、监事会持股比例,CEO持股比例对公司上市时盈余管理也没有显著影响。创业板上市风险投资企业的盈余管理程度主要受公司规模、财务杠杆比例以及公司行业特征影响。     

Joint pricing and inventory control for non-instantaneous deteriorating items with partial backlogging and time and price dependent demand

In this paper, a joint pricing and inventory control for non-instantaneous deteriorating items is developed. We adopt a price and time dependent demand function. Shortages is allowed and partially backlogged. The major objective is to determine the optimal selling price, the optimal replenishment schedule and the optimal order quantity simultaneously such that, the total profit is maximized. We first show that for any given selling price, optimal replenishment schedule exists and unique. Then, we show that the total profit is a concave function of price. Next, we present a simple algorithm to find the optimal solution. Finally, we solve a numerical example to illustrate the solution procedure and the algorithm.     

中国改革开放以来财政政策平滑经济波动的能力——基于传统IS-LM模型的实证分析

文章通过借助传统IS-LM模型和比较静态分析方法对中国改革开放以来财政政策平滑经济波动的能力进行了实证分析,得出:(1)财政政策对经济波动的整体平滑能力较低,平均只有6.35%,财政政策的平滑能力在经济波动的不同状态之间存在明显差异;(2)财政政策工具之间的平滑能力存在较大差异,其中财政购买性支出能平滑掉经济初始冲击的11.48%,而财政转移性支出和收入政策整体上反而使经济波动上升近3%;(3)内生性检验表明,中国只有相机性支出政策与经济波动之间存在显著的双向因果关系,不仅如此,相机性支出政策的内外时滞都较短。文章结论的政策含义是,提高中国财政政策稳定效果的关键在于提高政策工具的有效性与相互之间的协同效应,不仅如此,对经济高涨时期政府财政行为进行有效约束也至关重要。     

The mean-variance investment problem in a constrained financial market

This paper extends the mean-variance analysis and the two-fund separation theorem to a market with some constraints, such as, the incompleteness, prohibition of short-selling, and partial information, with stochastic interest rate, and with stochastic volatility for risky assets. By maximizing a quadratic utility of terminal wealth, we show that the efficient frontier for the problem is a straight line in the mean-standard-deviation diagram. The quadratic utility function exhibits mean-variance efficiency. Our results apply to portfolios of claims in a single period, multiperiod, and continuous time.     

The Effect of the Interaction between Price and Time Preference on Cigarette Consumption among Pregnant Women

In this study, I explore smoking behavior among pregnant U.S. women using the 1979 cohort of the National Longitudinal Survey of Youth. The key aspect of this study is the availability of smoking participation data before and during pregnancy. I consider the probabilities of smoking cessation while pregnant as the outcome. I find that pregnant women who smoke are less responsive to price changes when they are more future-oriented. Women who are more present-oriented are more likely to smoke and consume more cigarettes given that they smoke more than those who are future-oriented. Moreover, those who discount the future more heavily are more sensitive to the money price of cigarettes than those who are more future-oriented. I focus on the role of time preference and the interaction between time preference and price in determining these outcomes.     

大连城市居民周末休闲时间的利用特征

本文利用大连居民日常生活行为调查的结果,在比较居民工作日与周末休闲活动的基本特征基础上,从个人属性、社会属性和空间属性角度,对大连市居民周末休闲特征进行了较为详细的分析。分析中对居民社会属性与其休闲时间利用─—尤其是活动方式的选择──进行了相关分析,并引入时间地理学方法描画了居民周末活动路径,为城市休闲规划提供了基础知识。     

Optimal dividend policy and growth option

We analyse the interaction between the dividend policy and the decision on investment in a growth opportunity of a liquidity constrained firm. This leads us to study a mixed singular control/optimal stopping problem for a diffusion that we solve quasi-explicitly by establishing a connection with an optimal stopping problem. We characterize situations where it is optimal to postpone the distribution of dividends in order to invest at a subsequent date in the growth opportunity. We show that uncertainty and liquidity shocks have an ambiguous effect on the investment decision.      

Earnings Management Surrounding New Debt Issues

We examine whether firms manage earnings before issuing bonds to achieve a lower cost of borrowing. We find significant income‐increasing earnings management prior to bond offerings. We also find that firms that manage earnings upward issue debt at a lower cost, after controlling for various bond issuer and issue characteristics. Our results are consistent with studies that report earnings management around equity issuance. The results indicate that, like equity holders, bondholders fail to see through the inflated earnings numbers in pricing new debt.