Inference on inequality from household survey data

I develop a theory of asymptotic inference for the Lorenz curve and the Gini coefficient for testing economic inequality when the data come from stratified and clustered household surveys with large number of clusters per stratum. Using the asymptotic framework of Bhattacharya [Asymptotic Inference from multi-stage surveys. Journal of Econometrics 126(1), 145–171], I derive a weak convergence result for the continuously-indexed Lorenz process even when the underlying density is not uniformly bounded away from zero. I provide analytical formulae for the asymptotic covariance functions that are corrected for both stratification and clustering and develop consistent tests for Lorenz dominance. Inference on the Gini coefficient follows as a corollary. The methods are applied to per capita household expenditure data from the complexly designed Indian national sample survey to test for changes in inequality before and after the reforms of the early 1990s. Ignoring the survey design is seen to produce qualitatively different results, especially in the urban sector where the population sorts more completely into rich and poor neighborhoods.     

In the Name of Merit: Ethical Violence and Inequality at a Business School

Journal of Business Ethics - This study examines how meritocracy as a collective social imaginary promoting social justice and fairness reproduces class and caste inequalities and fosters ethical...     

“本土杀手”如何抗击全球危机

2009年，“本土杀手”正面临来自多方的压力，如更大的成本波动、政府首要措施的变化以及国际品牌认知与世界级研发能力的挑战，但是这些压力并没有阻止挑战者实现它们的增长雄心。从整体上说，它们通过适应和增强自身业务来应对这些压力。     

Implied volatilities,stochastic interest rates,and currency futures options valuation: an empirical investigation

Different models of pricing currency call and put options on futures are empirically tested. Option prices are determined using different models and compared to actual market prices. Option prices are determined using historical as well as implied volatility. The different models tested include both constant and stochastic interest rate models. To determine if the model prices are different from the market prices, regression analysis and paired t-tests are performed. To see which model misprices the least, root mean square errors are determined. It is found that better results are obtained when implied volatility is used. Stochastic interest rate models perform better than constant interest rate models.     

Outdoor advertising for business markets

A review of the history and current prevalence of outdoor advertising suggests that although the medium is very effective it is not widely used in business-to-business markets. A case for using outdoor advertising is deductively made based on the unique characteristics of business markets such as: geographic concentration of buyers, need to target buying center members, advantages of having integrated communication, possibility of creating derived demand, and targeting trade shows. This paper offers recommendations on when and how to use outdoor advertising based on unique business market characteristics, industrial promotional objectives and business product classification. Research propositions and directions for future research are offered.     

Drop-the-loser design in the presence of covariates

In the present work we develop a randomized two-treatment adaptive allocation design with covariates ensuring smaller variability of treatment allocations. We study, both numerically and theoretically, several exact and limiting properties of the design and consider an inferential problem following the allocation design. We compare the design with some of the existing allocation designs by computing its various performance measures.     

How much to make and how much to buy? An analysis of optimal plural sourcing strategies

While many theories of the firm seek to explain when firms make rather than buy, in practice firms often make and buy the same input—they engage in plural sourcing. We argue that explaining the mix of external procurement and internal sourcing for the same input requires a consideration of complementarities across and constraints within modes of procurement. We create analytical foundations for making empirical predictions about when plural sourcing is likely to be optimal and why the optimal mix of internal and external sourcing may vary across situations. Our framework also proves useful for assessing the possible estimation biases in transaction level make‐or‐buy studies arising from ignoring complementarities and constraints. Copyright © 2013 John Wiley & Sons, Ltd.     

Business Strategy and Firm Reorganization: Role of Changing Environmental Standards,Sustainable Business Initiatives and Global Market Conditions

My study is framed against the backdrop of increasingly stringent environmental demands on the pulp and paper industry to reduce water and air pollution, and the changing global market conditions. I first present an observation‐based analysis conducted by visiting selected paper mills in Finland, the US, Germany and Sweden. Interesting differences and similarities emerge. Some of the observed differences lie in their focus on achieving incremental efficiency gains from better management of production processes, inventories, supply‐chain, product distribution and timing of modernization investments such as information technology. In the second part of the paper I present evidence on firms' productivity paths and the heterogeneity in productivity among relatively similar firms, and selected evidence of firms' investments in specific areas and how these affected productivity. My findings have implications for organizational behavior and business strategies employed by firms to improve their performance and productivity under changing environmental standards and market conditions. Copyright © 2013 John Wiley & Sons, Ltd and ERP Environment