The effect of computer use on earnings in Italy

This paper studies the effect of computer use on earnings among a cohort of recent Italian high school graduates. The IV and Heckman techniques are used in order to control for endogeneity of computer use. Results show that the wage premium associated with computer use disappears once selection into computer use is accounted for. On the other hand, using the computer to perform a number of specific tasks leads to higher earnings. It is therefore suggested that not all individuals who use a computer at work receive a wage premium, but only those possessing complementary computer skills such as communication, networking and problem solving abilities.      

Computer adoption and returns in transition

Across nine transition economies, it is the young, educated, English‐speaking workers with the best access to local telecommunications infrastructures who work with computers. These workers earn about 25 percent more than do workers of comparable observable skills who do not use computers. Controlling for likely simultaneity between computer use at work and labour market earnings makes the apparent returns to computer use disappear. These results are corroborated using Russian longitudinal data on earnings and computer use on the job. High costs of computer use in transition economies suppress wages that firms can pay to their workers who use computers.     

The Impact of Computer Use On Earnings in the UK

The effect of new technology on relative demands for workers has been the subject of much research in economics. Krueger (1993) and others have studied the impact of computers on earnings in the US and elsewhere. Such studies have been criticised for ignoring the possibility of bias due to unobserved heterogeneity between computer users and non‐users, resulting in computer users not being a random sub‐sample of all workers. As well as looking at the effects of computers on earnings in the UK, this paper extends previous analyses by using a sample selection framework to deal with the bias problem. Results indicate not only that returns to computer use are positive but that it is important to correct for the sample selection bias.     

Computer knowledge and earnings: evidence for Australia

This paper uses data on wage and salary workers in Australia in 1993 to examine the relation between computer knowledge and earnings. A unique feature of the data set that is used is detailed information on the types and levels of computer skills possessed by individual workers. The main objectives of the study are to contribute to understanding the magnitude and sources of the relation between computer knowledge and earnings. Similar to existing research it is found that there is a large and significant return to computer knowledge, but that the magnitude of the return is substantially reduced in regressions that include detailed occupation controls. Using the detailed information on workers’ computer skills the main finding is that earnings are significantly positively related to the number of types of skills and average level of skills possessed by a worker.     

Which workers gain upon adopting a computer?

Abstract.  Using the Canadian Workplace and Employee Survey and controlling for individual and establishment fixed-effects, we find that within a year of adopting a computer, the average worker earns a 3.6% higher wage than a worker who did not use a computer. Returns are even larger for managers and professionals, highly educated workers, and those with significant prior computer experience. Employees who adopt computers for use with applications that require high cognitive skills earn the highest returns.     

A comparison of clustering dynamics in the US and UK computer industries

This paper compares the dynamics of the process by which geographical clusters emerge in the US and UK computer industries, by modelling the evolution of firm growth and entry. In both countries, new companies are attracted by industry strength in particular sub-sectors in a particular region. Moreover, incumbent firms located in a cluster that is strong in their own sub-sector of the industry tend to grow faster than average. While there are some second order differences between the models estimated for the US and the UK, it appears that the dynamics of clustering are similar. In particular, there is no evidence that clustering effects are weaker in the UK than in the US.     

利用计算机技术对药库进行规范化管理

目的利用计算机技术对药库进行规范化管理。方法通过计算机技术在药品采购、出入库管理、库存管理、盘点、财务报表、日常事务等药库管理工作中的应用。结果提高了工作效率,保证了药品质量,减少了差错的发生。结论利用计算机网络管理系统,使药库管理更加规范化、系统化、科学化。     

Economies of scale in the US computer industry: An empirical investigation using data envelopment analysis

Up to recently, economists have had no good tools to measure the returns to scale of individual corporations in an industry. Data envelopment analysis (DEA) is a linear programming technique for determining the efficiency frontier (the envelope) to the inputs and outputs of a collection of individual corporations or other productive units. While DEA offers an avenue for calculating the returns to scale of individual corporations, the approach has been riddled by mathematical complications arising from the possibility of alternate optima. The present paper develops theory for calculating the entire range of these alternate optima. Furthermore, in a quite ambitions empirical application, DEA is employed to determine the time path of returns to scale of all publicly held U.S. computer companies over the time period 1980–1991. For the great majority of companies, a unique time path is obtained; only in less than 4 percent of the linear programming calculations is an entire range of alternate optima obtained. The results indicate that the computer industry was polarized into two camps: large aging corporations with decreasing returns to scale, and swarms of small upstart companies with advanced technology exhibiting increasing returns to scale.     

长期资产减值与盈余管理方式选择

以2007年长期资产减值的政策变化为背景,研究上市公司盈余管理方式的选择偏好变化。通过研究发现,应计项目和真实活动盈余管理是公司可选择的盈余管理方式,公司会基于两种盈余管理方式的成本来选择具体的盈余管理方式;禁止长期减值损失的转回会对应计项目盈余管理有遏制作用,同时极有可能存在企业管理者偏向使用真实活动盈余管理的趋势。     

业绩预告的市场反应研究

本文以业绩预告信息为例，研究会计盈余的市场反应问题。我们的研究发现，关于年度会计盈余的业绩预告引起了明显的市场反应，但中性的预告信息则获得负的累计超额报酬，这表明在我国特殊的制度背景下，以随机游走模型确定未预期盈余存在一定的缺陷。同时，市场对坏消息反应更为剧烈，这说明广大投资者具备了一定的风险规避意识．市场对于不同属性的业绩预告信息的反应存在显著差异。     

Are computers driving real wages down?

The annual growth in mean employee compensation plummeted from 2.6% in 1947–73 to 0.4% in 1973–2003. Using both time-series regression and pooled, cross-section, time-series regression analysis for 44 industries over the period 1953–2000, we find that earnings growth is positively related to overall productivity growth, capital investment excluding computers, and the unionization rate. We find also that computerization has a significant negative effect on earnings growth, but no evidence that the growth of skills or educational attainment has any statistically significant effect on earnings growth. The dominant factors explaining the slowdown in wage growth are decline in the unionization rate, slowdown in both TFP growth and overall capital investment, and acceleration in computer investment.     

Analysis of Earnings Management in Chinese Listed Companies

This paper collect earnings management activities for 698 listed companies on the Shanghai Stock Exchange, and the purpose is to test whether Chinese companies use real activities such as asset sales, purchase, exchange and equity sales or purchase to manage earnings to meet or exceed CSRC regulatory thresholds. But we do not observe significant difference in the frequency of earnings management activities. However, with weak evidence, these firms report larger income-increasing contributions to current year earnings from earnings management activities to meet or exceed important thresholds.     

Geographic Differences in the Earnings of Economics Majors

Economics has been shown to be a relatively high-earning college major, but geographic differences in earnings have been largely overlooked. The authors of this article use the American Community Survey to examine geographic differences in both absolute earnings and relative earnings for economics majors. They find that there are substantial geographic differences in both the absolute and relative earnings of economics majors, even when controlling for individual characteristics such as age, education, occupation, and industry. They argue that mean earnings in specific labor markets are a better measure of the benefits of majoring in economics than simply looking at national averages.     

新会计准则的实施对企业盈余管理行为的影响——来自中国上市公司的实证证据

本文通过对新会计准则实施前后非金融类上市公司的盈余管理行为进行研究后发现,在新会计准则实施后,企业的盈余平滑行为增加了,并且更多地表现出为负的较小盈余通过一些利润操纵手段变成正的较小盈余的倾向。在用应计项进行盈余管理方面,企业在新会计准则实施后的平均可操纵性应计利润的绝对值明显大于新会计准则实施前。上述指标表明,新会计准则实施后,上市公司的盈余管理行为并没有减少,反而有所增加。本文期望通过这一结论为后续的会计准则改革和上市公司监管政策的制定提供一些参考。     

我国微利上市公司盈余管理方式研究

基于我国资本市场“微利现象”,以1998-2009年沪深两市A股非金融类上市公司为样本,采用独立样本T检验和多元回归分析方法,研究微利上市公司的盈余管理方式。研究表明：微利上市公司同时存在应计盈余管理和真实活动盈余管理两种方式,并且真实活动盈余管理是微利公司调增利润的主要手段,微利公司的总体真实活动盈余管理程度比非微利公司平均高3％或4．6％,而应计盈余管理程度平均只高1．5％,为我国资本市场真实活动盈余管理的存在性提供了新的经验证据。     

The optimal shape of compensation contracts with earnings management

The research question of why earnings management occurs is decomposed into two questions in this article: Which component of executive compensation generates incentives for earnings management? and Why is the compensation structured that way in the first place? We first use as a dynamic stochastic equilibrium model to show that ‘big bath’ and earning overstatement can co-exist as equilibrium financial reporting strategies when thresholds are used in compensation contracts. In order to understand the use of performance thresholds as a prevailing compensation strategy in practice, we then derive the optimal compensation contract when the manager is privately informed about economic earnings and his expertise in managing earnings. Equilibria exist in which the inactive region below a threshold in compensation should be economically significant.     

Cutting-sdge technologies computer software: strategic industry

US- owned firms account for more than 60% of worldwide computer software sales, and US capability in software tachnology is widely viewed as well ahead of that in other countries. However, the US lead cannot be expected to last. Nor are policies yet in place intended to protect exisitng advantages. Japanese firms have demonstrated their capabilities in hardware. Japanese firms have demonstrated their capabilities in hardware. Japanses exxecutives know they must develop better software in order (1) to use their own computer systems to best advantge, and (2) to sell more hardware in export markets. The next several devades will see a gradual slippage in the US position, particularly as foreign software suppliers move away from custom programming an realted services, their present focuse. A narrowing gap between US and foreign industries could prefigure a competitive challenge in software, development not unlike earlier challenges in microelectronics. Better software,. in addition, will have impacts elsewhere.In Japan's case, for example, improvements in softwarte should lead to productivity enhancements throughout the economy, improving Japan's ability to tmpete internationally.     

THE RELATIONSHIP BETWEEN HIGH SCHOOL MARIJUANA USE AND ANNUAL EARNINGS AMONG YOUNG ADULT MALES

This article uses a unique panel data set to examine the relationship between high school marijuana use and annual earnings at age 29. The authors estimate a series of OLS models that incrementally add potential confounding variables, including marijuana use at age 29. The analysis finds that part of the negative relationship reflects an indirect pathway whereby early marijuana use affects human capital accumulation, which in turn affects earnings. Moreover, the authors find evidence that the remaining association between early marijuana use and earnings, after controlling for differences in human capital, reflects the cumulative effect of marijuana use on cognitive ability and motivation. (JEL J30 , I12 )     

Risk compensation in wages – a replication

We use data from Germany, The Netherlands, Portugal and Spain to test for the effect of earnings variation on individual earnings. We replicate estimates for the USA and find that the variance of earnings in an occupation affects individual wages positively while the skewness of earnings has a negative effect. Both results are in conformity with wage compensation for risk averse workers. First version received: March 2001/Final version received: July 2002 We are grateful to two anonymous referees for valuable comments.     

COMPUTER SKILLS AND WAGES*

Data from the 1993 Survey of Training and Education show that 52 per cent of males and 60 per cent of females had at some time used a computer. An analysis using earnings functions reveals that computer usage is associated with a wage premium of between 12 and 16 per cent. Experiments show that omission of a variable recording computer usage from a wage equation will result in a bias of between 10 and 15 per cent in the estimated return to a year of schooling and similar distortion to the estimated return to experience.