互联网金融对商业银行信用卡业务影响的实证研究

基于上市商业银行2007~2013年信用卡业务数据,运用结构方程模型考量互联网金融对商业银行信用卡业务的影响,结果表明,互联网金融通过网络银行业务的中介作用,实现对信用卡业务的溢出效应,在一定程度上促进商业银行信用卡业务的发展,但互联网金融的替代效应却不显著。有鉴于此,商业银行应积极开拓互联网金融,加快其自身业务的发展。     

The demand for eurozone stocks and bonds in a time-varying asset allocation framework

This paper analyzes the short and long-run demand for traditional financial asset classes in eleven founding eurozone members. Our sample period starts from the introduction of euro till 2017. We calculate the welfare losses stemming from ignoring the demand for domestic and eurozone equities and bonds, for various levels of risk aversion. Our results show that the bonds of eurozone countries are, in general, desirable for short-run only. However, in Ireland, Portugal and Spain the bonds are desirable for both short-run and long-run investment horizons. Stocks exhibit both short-run and long-run desirability for all countries except Greece. The Greek stocks are desirable for short- run only.     

Fuzzy Chronic Poverty: A Proposed Response to Measurement Error for Intertemporal Poverty Measurement

A number of chronic poverty measures are now empirically applied to quantify the prevalence and intensity of chronic poverty, vis‐à‐vis transient experiences, using panel data. Welfare trajectories over time are assessed in order to identify the chronically poor and distinguish them from the non‐poor, or the transiently poor, and assess the extent and intensity of intertemporal poverty. We examine the implications of measurement error in the welfare outcome for some popular discontinuous chronic poverty measures, and propose corrections to these measures that seeks to minimize the consequences of measurement error. The approach is based on a novel criterion for the identification of chronic poverty that draws on fuzzy set theory. We illustrate the empirical relevance of the approach with a panel dataset from rural Ethiopia and some simulations.     

技术进步方向、资本-劳动替代弹性对中国农业经济增长的影响

本文从理论上分析了资本-劳动替代弹性和技术进步方向对农业经济增长的影响,估算了28个省份1978-2013年要素替代弹性和技术进步偏向指数。研究结果显示,要素替代弹性大于1,技术进步主要偏向于资本;要素替代弹性和技术进步偏向指数与农业经济增长率呈正相关关系,即要素替代弹性促进农业经济增长,在要素替代弹性大于1的情况下,技术进步偏向资本促进农业经济增长。     

环境立法管制对企业出口国内附加值率的影响*

本文通过理论建模和经验数据研究了环境立法管制与中国企业出口国内附加值率之间的关系。结果发现,环境立法管制有助于提升中国企业出口国内附加值率。机制分析证明：一方面,加强环境立法管制的“成本效应”促使直接受约束的企业寻找其他可替代要素。这种替代效应的大小取决于企业对污染型资源的依赖程度。“创新效应”通过改变企业生产效率影响企业成本加成。这两种效应均影响了出口国内附加值率。另一方面,环境立法管制提高了本国企业出口到国外市场的生产率下界,使间接受约束的企业改变定价策略,进而影响出口国内附加值率。本文研究表明,地区严格的执法力度有助于扩大环境立法管制对污染型资源依赖程度较低企业出口国内附加值率的积极影响。     

Can the HOSS framework help shed light on the simultaneous growth of inequality and informalization in developing countries?

Using simple, modified versions of the factor proportions framework, and focusing on structural features within developing economies, this paper attempts to reconcile puzzling developments observed in many post-reform, post-liberalization countries whereby increasing income inequality has emerged side-by-side with informalization of the economy. Measures undertaken to enhance public sector efficiency and attract investment in an import-intensive export sector may increase rental–wage and skilled–unskilled wage gaps, contra the predictions of the simple Heckscher–Ohlin–Stolper–Samuelson (HOSS) framework regarding skill- and capital-scarce countries. The common thread generating our interesting results is the presence of sectors that are even more labor-intensive than those producing traded goods.

On a generalization of a class of production functions

In Appl. Econ. Lett. 18 (2011), 1777–1784, as a natural generalization of some famous production models with two inputs, C.A. Ioan and G. Ioan introduced a new class of production functions with constant return to scale, called sum production function, and proved three theorems of characterization for such production models. In this article, we give new and more simple proofs of these theorems, extending also the results to the case of increased/decreased return to scale. The generalization to the case of an arbitrary number of inputs is also discussed.     

Intertemporal production and intertemporal substitution in output supply and input demand

This article presents an intertemporal model of production with multiple inputs to investigate substitution opportunities facing firms over time. The firm’s intertemporal profit maximization problem is characterized with the familiar cost function, and various intertemporal substitution elasticities are delineated for output supply and input demand. The absence of intertemporal substitution in production can imply production smoothing, and allowance for intertemporal substitution in labour demand reinforces the prediction of the real business cycle model. For aggregate US manufacturing, we find substantial substitution in output supply and labour demand over time due to intertemporal changes in output price and wage rates.     

von Thünen: Capital,Production Functions,Marginal Productivity Wages,and the Natural Wage

This paper puts seminal contributions to theory of production functions and maximization of explicit quantitative objective functions by Johann Heinrich von Thünen into a systematic historical perspective. We show that his comprehensive ‘Tableau Economiques’ do imply two exact parametric production functions. Moreover, the renowned ‘geometric mean wage’ formula is restated as an exact CES marginal labor productivity wage for σ = 2. We review four alternative modes of normative (natural) wage calculations without an explicit production function, and conclude that von Thünen's natural wage differentiation formulas are bona fide alternatives for deriving the natural wage formula.     

中国钢铁行业能源内部的替代弹性分析

本文运用中国钢铁行业滞后一期的产出代替劳动和资本变量,把钢铁行业能源投入要素分解为煤炭、石油、天然气和电力的投入,建立了一个超越对数生产函数模型,用岭回归估算了中国钢铁行业各能源品种投入要素的产出弹性、替代弹性。结果表明:煤炭与石油、煤炭与天然气、煤炭与电力的替代弹性在1左右,中国钢铁行业可通过用石油、天然气、电力替代煤炭来实现其行业全要素能源效率的提高。