The Aggregate Relation between Profits and Concentration is Consistent with Cournot Behavior

An important and controversial stylized fact inindustrial organization is the positive correlationbetween industry profit and concentration. Oneinterpretation of this finding is based on thetheories of Chamberlin and Stigler, which imply thatconcentrated industries facilitate collusion. Butnon-cooperative profit maximizing behavior can alsogenerate a positive correlation. This paperpresents an equilibrium model of oligopoly whichnests the behavioral assumptions of Bertrand,Cournot, and Chamberlin. Simulations of the modelunder the Cournot assumption yield regressioncoefficients for the profits-concentration relationthat are very close to the estimated coefficients inthe literature.     

Homeownership Effects of Alternative Mortgage Instruments*

Most of the interest in alternatives to the standard mortgage instrument has centered on the ability of the alternatives to improve on the performance of the mortgage instrument over the business cycle. The focus in this paper is on the long-term effects on homeownership rates and associated additional residential construction. The instruments are found to offer potentially large increases in homeownership rates by reducing monthly mortgage payments. Widespread adoption of those instruments causing larger payment reductions would allow around one million more households to become owner-occupants. The demand for new single-family homes would increase over the long run by 3 to 4 percent a year. Homeownership could be further increased by a time-limited subsidy directed at moderate income families.     

KfW/ZEW CO2 Panel: Vermeiden oder kaufen – Deutsche Unternehmen im Emissionshandel

The European Emission Trading Scheme (EU-ETS) is the first large-scale and inter-regional trading scheme for greenhouse gas emissions. It is seen as the central instrument of European climate policy. After a first testing-phase (2005–2007), the second trading period of the EU-ETS had started in 2008, with stronger incentives for investment in low-carbon technologies and carbon dioxide abatement. However, there is hardly any evidence how emissions trading fares in practice. The KfW/ZEW CO₂ Barometer shows that trading of emission permits is actively used by 75 percent of German companies, but the price-signals that stem from the EU-ETS were relatively weak so far—too weak to set strong incentives for carbon dioxide emission reductions on the company-level. Also in the case of the ‘clean development mechanism’ (CDM) which was introduced to promote emission reductions in developing counties, there is need for further development.     

Estimating Facility Size for Variable or Uncertain Activity Levels

In this article, we propose a model and methodology for valuing the option to delay network investment decisions and calculating cost-based access prices. We model the value of the option to invest in each network element as a function of two stochastic variables: the flow of total variable profit from the service provided by the network element and the cost of new investment in that network element. We calculate the option value multiple to be applied to the investment cost component of three main network elements, conduct sensitivity analyses, and highlight key findings.     

Work experiences,work adjustment and psychological well-being of expatriate employees in Hong Kong

This study replicated and extended research on expatriate work adjustment by examining the antecedents of work adjustment and its outcomes in terms of psychological well-being. Data were obtained from a nationally heterogeneous sample (N = 184) of expatriate employees in Hong Kong using a structured questionnaire. Results of regression analysis revealed role conflict to be significantly negatively related to work adjustment, while role discretion, co-worker support and work-method ambiguity (clarity) were significantly positively related to work adjustment. Of the three hypothesized outcomes, work adjustment was significantly positively related only to job satisfaction but not to quality of life and marital adjustment. Though not the focus of this study, interaction adjustment was found to be significantly positively related to quality of life. Limitations of the study and implications of the findings are discussed.     

Rent Control and The Supply of Housing Services: The Brookline Massachusetts Experience

A bstract . The hypothesis that the short-run and long-run supply of housing services is unaffected by rent control is examined. It has been asserted that total housing services may remain unchanged when tenant supplied services are included and that capital improvements may return to normal after the initial loss in property values. Using data on health code violations and building permits from a town in metropolitan Boston , the analysis concludes that rent control diminishes the total supply of housing services in the short-run and reduces capital expenditures to maintain and improve housing services in the long-run.     

Learning Business Ethics in Schools

Business ethics is a contemporary issue among business professionals. To enhance business ethics in the long run, educating future business professionals in colleges （i.e., college students） is one of the starting points. This paper aims to investigate students＇ perceptions on business ethics, such as their perceived importance of business ethics, knowledge of and interest in business ethics, their preferred method of introducing business ethics, and the perceived usefulness of learning business ethics in lessons. Focus groups will be used to collect feedback on these issues from students with different gender and seniority in colleges. This study will give insights into the students＇ perceptions on business ethics and suggest ways/methodology to increase the awareness of business ethics in colleges. Business professionals and educators can make reference to the findings to develop relevant materials on business ethics to their employees and students.