新农保对农民最优储蓄的挤出效应及其影响因素分析——基于两期代际扩展模型的应用

摘要：新型农村养老保险制度的实施和持续发展,不仅具有维护农村居民社会养老保险权益公平性的社会作用,还能起到刺激农村消费需求增加从而促进农村经济发展的经济作用。通过两期代际扩展型的应用,证明了新农保的实施对个体农户终身效用最大化下的最优储蓄存在挤出效应,其主要影响因素有：缴费年限、缴费比率、养老保险账户的增值保值能力和收入替代率等,并以此为基础,提出了完善新农保制度、促进其可持续发展的政策建议。     

Particulate matter air pollution control programs in Japan — an analysis of cost savings in the absence of future remediation

The objectives of this study were to assess avoided economic costs (or anticipated ‘benefits’) of not implementing new environmental policies for particulate matter (PM) in Japan and compare these future benefits to estimates of future health risks developed in a separate analysis. The estimates for the benefits of avoided PM pollution control in the year 2010 were (1) $27 billion USD for stationary source controls, (2) $2.1 billion to $3.3 billion USD for diesel motor vehicle controls, (3) $41 million USD for governmental employee salaries, (4) $470 million USD for governmental financial assistance, (5) $510 million USD for special diesel vehicle control measures in Tokyo, and (6) $31 billion USD for total costs.

Using human health and productivity risks, calculated in a separate study to be $56 billion USD, the best net ratio of benefits to costs was 1.8 to 1. Inexpensive control options include road watering or paving for unpaved dirt roads and road vacuuming for paved roads. Intermediate options include differential road pricing, retrofitting diesel particulate filters, and reformulating diesel fuel. High cost options include adding particulate controls, such as wet scrubbers, baghouses, and electrostatic precipitators on uncontrolled stationary sources.     

Do government owned banks trade market power for slack?

The ‘Quiet Life Hypothesis (QLH)’ posits that banks with market power have less incentives to maximize revenues and minimize cost. Especially government owned banks with a public mandate precluding profit maximization might succumb to a quiet life. We use a unified approach that simultaneously measures market power and efficiency to test the quiet life hypothesis of German savings banks. We find that average local market power declined between 1996 and 2006. Cost and profit efficiency remained constant. Nonparametric correlations are consistent with a quiet life regarding cost efficiency but not regarding profit efficiency. The quiet life on the cost side is negatively correlated with bank size, quality of loan portfolio and local per capita income. The last result indicates that the quiet cost life is therefore potentially due to benevolent excess consumption of local input factors by public savings banks.     

Foreign Debt and Domestic Savings in Developing Countries

ABSTRACT

This paper addresses the question of potential causality between foreign debt and domestic savings within the context of developing countries. The literature provides evidence insofar as foreign debt and development is concerned, but little attention has been given so far to internal potential for capital formation. We provide a theoretical framework and test its relevance by using 1975–2004 data for two groups of countries: sub-Saharan Africa and Latin America with the Caribbean. With the use of instrumental variables we find that foreign debt impacts negatively on domestic savings, especially in the long run. The results are not susceptible to the choice of countries or outliers. However, the relationship between foreign debt and savings seems to depend on debt accumulation gaining significance only after surpassing a country's specific threshold.

RESUMEN. Este estudio aborda el tema de la causalidad potencial que existe entre la deuda externa y el ahorro interno en el ámbito de los países en desarrollo. La literatura existente contiene pruebas sobre la deuda externa y el desarrollo pero, hasta el momento, ha dedicado poca atención a todo lo concerniente al potencial doméstico para la formación de capital (capitalización). Hemos trazado un marco teórico y puesto a prueba su relevancia usando datos del período 1975–2004 para dos grupos de países: África subsahariana y Latinoamérica incluyendo El Caribe. Los instrumentos variables utilizados nos permitieron encontrar el impacto negativo que la deuda externa ejerce sobre el ahorro interno, especialmente a largo plazo. Estos resultados no son susceptibles a la selección de países específicos o aislados. No obstante, la relación entre la deuda externa y el ahorro parece depender de la acumulación de la deuda, adquiriendo más significado solo después de pasar el umbral específico de un país.

RESUMO. Este estudo aborda a questão da causalidade possível entre o débito estrangeiro e a poupança interna no contexto dos países em desenvolvimento. A literatura apresenta evidências sobre débito externo e desenvolvimento, mas há pouca informação em relação ao potencial interno para a formação de capital. Mostramos uma estrutura teórica e testamos a sua relevância, utilizando dados de 1975 até 2004 para dois grupos de países: a África Subsaariana e a América Latina com o Caribe. Com a ajuda das variáveis instrumentais, descobrimos um impacto negativo do débito estrangeiro sobre a poupança interna, especialmente a longo prazo. Os resultados não são suscetíveis à escolha de países ou de dados atípicos (outliers). A relação entre débito externo e poupança, entretanto, parece depender do acúmulo do débito, tornando-se importante, apenas no caso de ultrapassar um limiar específico do país.     

Consumption dynamics under information processing constraints

This paper studies how “rational inattention” (RI)—a type of information processing constraint proposed by Sims [Sims, C.A., 2003. Implications of rational inattention, Journal of Monetary Economics 50 (3), 665–690]—affects the joint dynamics of consumption and income in a permanent income model with general income processes. Specifically, I propose an analytical approach to solve the multivariate permanent income model with RI and examine its implications for optimal consumption, saving, and welfare. It is shown that RI can affect the relative volatility of consumption and provide an endogenous propagation mechanism that disentangles the short-run and long-run responses of consumption to exogenous income shocks. I also explore how aggregation reduces the impact of the RI-induced endogenous noise on consumption and thus increases the smoothness of aggregate consumption. Finally, I compare RI with four alternative hypotheses (habit formation, signal extraction, robustness, and inattentiveness) by examining their implications for the joint behavior of consumption and income.     

成本节约的不确定性、效率抗辩与并购评估审查

横向并购可能给参与并购的企业带来成本节约而产生效率效应,同时也可能产生反竞争效应。在横向并购反垄断审查的效率抗辩中,并购企业只要能够证实成本节约的效率效应能够抵消反竞争效应进而增进社会总福利水平,就可以获得反垄断当局的批准。然而,成本节约及其实现程度具有不确定性,成本节约的不确定性不仅会影响消费者剩余和社会总福利水平,而且将对效率抗辩和反垄断当局并购审查的判定规则产生影响。本文以Cournot模型为基础,系统分析了成本节约的不确定性对于横向并购反垄断评估审查中效率抗辩、判定规则和预期消费者福利的影响,为反垄断当局在并购评估审查中如何考虑效率因素提供决策参考。     

Optimal savings with taxable and tax-deferred accounts

We solve and estimate a life-cycle model with earnings risk and liquidity constraints in the presence of tax-deferred retirement accounts (TDAs). We explicitly consider two very different types of households (with TDAs): direct and indirect stockholders. The latter hold stocks only through TDAs and, consistent with the data, save considerably less than the former, who hold stocks both inside and outside these accounts. We find that TDAs promote higher wealth accumulation but only marginally higher net savings. Consumption increases mostly during retirement, as desired, but the effect is largest for those households with higher savings rates already.     

基于凯恩斯消费函数的中美消费差异实证分析

本文将1986—2005年中国、美国消费与收入的相关数据与凯恩斯绝对收入假说理论进行了实证分析,对计量模型进行了参数估计和检验,通过建立居民的消费收入模型,得出了我国居民平均边际消费倾向低于美国居民的结论,并对如何鼓励消费政策提出了相应政策建议。     

Risk-sharing and Growth: The Role of Precautionary Savings in the "Education" Model

While the "risk amelioration" literature suggests that risk-sharing channels savings into risky but productive technologies and hence favours growth, models focused on precautionary savings reverse this conclusion. We solve, by means of numerical techniques, a model based on human capital accumulation through education, and find that the increase in precautionary savings makes labour more productive in the goods sector and draws resources from education, which is the "growth leading" activity. Hence, we establish a result favourable to financial integration, even in a model where precautionary savings play an important role.     

从企业筹资方式选择看我国融资制度建设

企业融资与现代经济已完全融为一体。应该综合利用我们的现有资源和有益经验,积极借鉴国外成功做法,辨证、客观、全面地比较、选择直接融资与间接融资。