Taxes and labor supply: Portugal, Europe, and the United States

I relate hours worked with taxes on consumption and labor for Portugal, France, Spain, United Kingdom and United States. From 1986 to 2001, hours per worker in Portugal decreased from 35.1 to 32.6. With the parameters for Portugal, the model predicts hours worked in 2001 with an error of only 12 min from the actual hours. Across countries, most predictions differ from the data by 1 h or less. The model is not sensible to special assumptions on the parameters. I calculate the long run effects of taxes on consumption, hours, capital and welfare for Portugal. I extend the model to discuss implications for Social Security. I discuss the steady state and the transition from a pay-as-you-go to a fully funded system.

Trade policies, concentration, growth and welfare

The aim of this paper is to analyse, through a theoretical model, the effects that the trade integration of two countries may have on industrial location, growth and welfare.The conclusions reached finally depend both on whether the import or the export costs are affected by the trade policies on which the integration process is based and on whether the rich or the poor country introduces them. In general, when integration leads to an increase of industrial concentration in the rich country, the growth rate increases and welfare improves in both countries. If integration means that industry moves to the poor country, the growth rate decreases; in spite of this, in this case the poor country can also improve its welfare.     

Determining demand, supply, and pricing for emerging markets based on disruptive process technologies

A model for forecasting the likely market size and demand for an early-stage emerging process technology is considered. This method takes into account markets, supply, demand, supply/demand gap, pricing, implications to government policy, corporate strategy, and value of intellectual property. For the purpose of illustration, forecasting of microsystems is considered.     

Fertility,income and welfare in an OLG model with regulated wages

We analyse the effects of the regulation of wages in a standard one-sector OLG model of neoclassical growth extended to account for endogenous fertility decisions of households and unemployment benefit policies financed at balanced budget. In contrast with the prevailing literature, which has failed to pay due attention to inter-temporal contexts, our conclusion is that minimum wages may be introduced not only for equity reasons, that is, to increase the income of low-paid workers, but under suitable conditions—i.e., if production is sufficiently capital oriented and the unemployment benefits are high enough—minimum wage legislation might be considered as a source of increased economic performance despite unemployment, i.e. a regulated-wage economy performs better than a market-wage economy. As a consequence, since higher minimum wages raise per capita income together with increasing unemployment, our results imply that a positive correlation between unemployment and long-run income per-capita may exist. Further, the lifetime welfare of the representative generation may be increased as well. Finally, the wage rate may also be treated as a policy instrument for the control of population growth.

The effects of tax reform on labor supply, tax revenue and welfare when tax avoidance matters

We examine how tax avoidance in the form of trade in well-functioning asset markets affects the study of labor supply. We discuss the implications for tax policy analysis, and we show that a failure to account for avoidance responses may lead to huge errors when analyzing how tax reform affects labor supply, tax revenue and the welfare cost of taxation. Our model may explain a number of otherwise hard to understand dimensions of taxpayer response.     

供应链环境下长客股份有限公司电子化采购管理研究

企业采购管理对降低企业的采购成本、提升企业的经营效益起着至关重要的作用。通过对长客轨道客车股份有限公司采购管理的现状与出现的问题进行实证分析,提出了基于供应链模式下的电子化采购的管理问题的对策,为促进我国企业尤其是制造型企业的健康、持续发展,提供参考与借鉴。     

“国军”福利品供应站顾客消费特性及营销策略之研究

本研究首先经由文献探讨,界定“国军”福利品供应站在业态别中的角色,应类似于超级市场的综合商品零售商的角色。而後透过问卷设计调查,SWOT分析及深度访谈等方式,提出福利品供应站在经营及营销策略上除了强调商品售价低廉外,也应着重于强调保证商品质量的宣传力度,并以更具弹性的手法来引进或汰换商品,并且尽可能提供更多的商品选择性,而後利用邻近小区或都会区的营区来增加责场地点或以租赁场地方式采用小规模小区型售场的方式大量展店,并以更多元的方式促销,建立完整顾客数据库,提高宣传效率及全面开放信用卡消费等积极性方式作为推动策略。     

Credit policies,macroeconomic stability and welfare: The case of China

Using a new Keynesian DSGE model with credit constraints, we study the impact on macroeconomic volatility of a macroprudential credit policy of the type implemented by the Central Bank of China. We find that the countercyclical credit policy plays a non-negligible role in stabilizing the real economy, and that this effect is distinctly more pronounced when credit conditions are looser. By means of a second-order approximation method, we show that the macroprudential credit policy can significantly boost welfare, benefiting the entrepreneurial sector more than the household sector. The results can yield insights for the institutional and policy setting of China and other emerging countries.     

Measuring the influences of supplier selection and supply chain tasks on firm performance among manufacturing firms in India

The primary objective of this research is to empirically probe the various aspects and variables that have been already addressed in the previous literature related to supplier selection criterion, supply effort management and firm performance. Further, this research aims to develop a measurement framework and pragmatically prove the framework through a measurement model. First, a factor structure for various constructs is made and the initial validity is determined from practicing managers and academicians. This research employs survey method and the data is collected from 358 supply chain professionals working in manufacturing firms in India. A measurement model is developed and proved with various tests of reliability and validity. Finally, three major latent constructs were formulated, namely, criterion of supplier selection, supply effort management and firm performance. The factor scores of these latent variables were used for further analysis. A six-stage approach was followed in the analysis of data. Firm performance was regressed against supplier selection criterion and supply effort management. The results indicate that the predictive variable has positive and significant effect on firm performance and they do not have any interaction and multicollinearity effects.     

In-school labour supply,parental transfers,and wages

In many industrialised countries, teenagers have a significant spending power, and they are important customers for specialised industries. The income of teenagers still in full time education comes from two major sources: parental pocket money and earnings from part-time jobs. Little is known about the way these sources interact, and how they depend on parental, school and family characteristics. In this paper, we analyse labour supply of 16 year old British teenagers together with the cash transfers made to them by their parents. We first develop a theoretical model, where labour supply and transfers are jointly determined. We then estimate labour supply and transfers jointly, using unique data on labour supply of teenagers, the wages they receive, and the transfers from their parents. We show how these two processes depend on each other, and how transfers and labour supply react to changes in wages. We are grateful to the Leverhulme Trust for financial support for this research, which has also benefited from support to the IFS as a Designated Research Centre of the ESRC. We thank Murali Agastya, Richard Blundell, Ian Preston, Frank Windmeijer, and two anonymous referees and the editor Bernd Fitzenberger for useful comments.     

地区差距、要素流动与财政分权

本文在财政分权框架下引入不完全人口流动和内生劳动供给选择 ,针对两个不对称的地方经济 ,研究了政府的最优税收、最优公共支出和最优转移支付政策。我们发现了零中央政府收入税和逆向财政缺口 ,在有限政策工具的约束下 ,对应性转移支付也具有缩小区域差距的功能。不同级别政府间的服务竞争和税收竞争极大地影响了个人和政府的最优决策 ,拥挤效应和实际禀赋效应放大了通常意义上的收入效应水平。人口流动和财政分权提高了低生产力地区的福利 ,数值模拟分析结果表明高生产力、高禀赋地区对低生产力、低禀赋地区存在隐性的区域间收入再分配 ,中央政府的干预措施一般具有协调区域发展、补贴低生产力低禀赋地区的性质。结合我国东西部的经济现实 ,我们认为中央政府应该打破已有的利益分配格局 ,优化转移支付资金的结构 ,提高财政政策效率     

Variable labour supply, specialisation-based external economies, and capital inflow

This paper examines the impact of exogenous capital inflow on prices, production, labour supply, and welfare in the presence of specialisation-based externalities. The paper utilises a simple model of an economy that produces one-final good by means of capital, labour, and a large number of varieties of an intermediate good. The intermediate good is produced by means of capital and labour. The supply of capital is exogenous but the supply of labour is endogenous. The presence of internal economies of scale in the intermediate good industry gives rise to specialisation-based external economies in the production of the final good. Perfect competition prevails in the final good industry whereas the intermediate good industry operates under Chamberlinian monopolistic competition. It is shown that exogenous capital inflow decreases labour supply and increases welfare only if the elasticity of substitution between leisure and the final good is equal to or less than unity. The paper also shows that, if trade opens up between two otherwise similar economies, a capital rich country would be a net importer of varieties of the intermediate good.     

面向服务供应链的知识共享机制与模型研究

客户需求的个性化和服务产品的同质化矛盾日益凸显,使得服务企业纷纷寻求更科学的服务供应链运作模式去获取竞争优势.服务供应链中的服务资源在供应链上具有多重属性,不同运作主体在服务供应链上处于不同的运作级别,因而对供应链运作流程的理解存在较大的差异性,导致服务供应链在知识管理过程中难以产生面向供应链整体的、紧密结合流程的服务运作知识.针对服务供应链资源管理的复杂性和共享知识的异构性,提出了基于网格管理的服务供应链资源与知识集成框架,旨在实现服务供应链中知识与资源要素的有机结合,并在此框架基础上提出了服务供应链知识共享模型,该模型从服务供应链的资源匹配和知识要素整合两方面提出并揭示服务供应链知识共享的关键流程和环节.     

雾霾治理、地方政府竞争与全要素生产率

在将城市面板数据与中国工业企业面板数据进行匹配的基础上,本文就地方政府竞争下环境治理策略互动形式进行了检验,然后构建空间自滞后模型并运用两阶段最小二乘法探讨了雾霾治理对全要素生产率的本地影响及其空间溢出影响,进一步从资源配置效应、创新补偿效应和污染避难所效应三方面考察了雾霾治理的传导机制。结果表明,随着环保政绩考核的加入,地理邻近城市环境治理策略逐渐从“逐底竞争”转变为“模仿”形式,即邻近城市加强或放松治理,该城市也加强或放松治理强度,相对竞优模仿形式下雾霾治理更有助于促进本地、邻地全要素生产率的提高,且不同区域、行业和所有制企业存在差异。进一步探究原因,发现加强雾霾治理产生的资源配置效应和创新补偿效应有利于促进城市间全要素生产率提高,而雾霾治理产生的污染避难所效应不利于城市间全要素生产率提高。由此,本文提出完善雾霾联防联控机制、创新绿色经济发展方式,实现环境保护和经济发展良性互动的建议。     

全要素生产率、投入替代与地区间的能源效率

本文通过对传统的能源效率指标进行分解,考察了1986—2010年间我国各地区能源效率及其影响因素的变化情况,得到以下结论:(1)能源效率变化的主要影响因素按贡献大小的排列分别是技术进步、投入替代变化与效率改善。总体上看,全要素生产率的作用要大于投入替代。技术效率变化与技术进步对能源效率的影响与我国的市场化改革进程存在密切关系;(2)尽管地区间"能源效率缺口"绝对量在逐年扩大,但表现出一定的追赶与收敛趋势。能源效率的地区结构差异表现出一定的地带性;(3)在能源效率变化的三个分解项中,投入替代变化的差异是影响地区间能源效率差异的首要因素。以上分析结果不仅有助于理解中国及各地区的能源效率及其影响因素的变化趋势,而且将为节能减排政策的制定与完善提供一定的参考依据。     

制度主导、要素贡献和我国经济增长动力的分类检验

本文依据我国市场化和产权制度改革特征,结合罗默(1999)和巴罗等(2000)的模型及演绎逻辑,将制度引入增长模型诠释要素发展和经济增长关系。数理分析表明,制度越完善,经济增长就越表现为人力资本和技术进步的发展。制度越不完善,经济增长就越受限于制度的发展。利用对数线性模型,将产权制度以直接或与资本相结合形式进入模型,分类检验资本、技术进步、制度、贸易、金融和地域与经济增长的作用关系。OLS和GMM估计结果显示,物质资本、人力资本和产权制度对我国经济增长的解释更具效力,省际面板数据的稳健性检验也印证了上述结论。本文指出,制度不仅直接作用于经济增长,而且还通过影响生产要素投入和配置效率来促进经济增长,即物质资本和人力资本作用包含制度贡献,产权制度是我国现阶段经济增长的最主要动力。     

城市化、创新与全要素生产率增长——基于省际面板数据的经验研究

本文首先采用Malmquist指数方法测算我国29个省份1991-2007年间全要素生产率增长情况,研究城市化、创新与全要素生产率之间的协整关系,并基于面板误差修正模型考察短期波动的影响。得出结论:(1)城市化、创新与全要素生产率具有长期均衡关系,城市化和创新对全要素生产率增长具有长期的正向影响,城市化通过创新中介效应显著地驱动全要素生产率增长,这种影响在沿海和内陆之间存在差异;(2)城市化对全要素生产率具有积极的短期影响,且滞后一期影响强度大于当期,而创新对全要素生产率并不产生短期正向影响。     

Fertility,household structure,and parental labor supply: Evidence from China

This study examines the effects of fertility on household structure and parental labor supply in China. To solve the endogeneity problem, we use a unique survey on households with twin children and a comparison group of non-twin households. The ordinary least squares estimates show a negative correlation between fertility and parental labor supply in rural China. Using twinning as a natural experiment, we do not find evidence on the negative effects of fertility on parental labor supply. By contrast, we find that the twinning-induced increase in fertility significantly enhances the coresidence of grandparents in rural China. We suggest that the negative effects of fertility on parental labor supply are mitigated by the childcare provided by grandparents in rural China. We also find that fertility does not induce coresidence of grandparents in urban China. Our results have important implications for population and public childcare policies.     

环境规制、能源要素价格与绿色创新效率 ——以长江经济带为例

以“共抓大保护、不搞大开发”为导向推动长江经济带发展,需掌握不同环境规制类型与能源要素价格对长江经济带绿色创新的影响。本文运用面板门槛回归模型聚焦讨论能源要素价格与不同环境规制类型对长江经济带绿色创新效率的影响。研究结果表明:命令控制型环境规制和市场激励型环境规制显著抑制了长江经济带绿色创新效率,不支持“波特假说”;自愿型环境规制显著提高了长江经济带绿色创新效率,验证了“波特假说”。环境规制对长江经济带绿色创新存在显著的空间异质性,且在能源要素价格的不同区间下环境规制带来的影响具有明显差异。不同环境规制下的能源要素价格指标函数均不一致,但存在交叉区间,而在主要环境规制类型下能源要素价格对长江经济带绿色创新效率的影响显著为负。控制变量的研究表明,产业结构和产业规模均在一定程度上显著地积极影响长江经济带绿色创新效率,而社会购买力在一定程度削减了长江经济带绿色创新效率。因此,政府需要进一步深化能源价格市场化改革,多角度、差异化实施环境规制行为,共同发挥社会团体对绿色创新的影响。