A short remark on the theory of random sampling and the theory of variance

Abstract

In developing the theory of random sampling, no pressupposition is usually made as to the underlying limited population. This tends to render the theoretical work considerably more difficult; but then, in order to utilize the developed properties in tests, it is necessary to make certain limiting references to the theorem of limiting value, etc. It is, therefore, tempting to make requirements of distribution properties of the original population to avoid theoretical difficulties, and later try to expand the results obtained. The obvious course, then, is to seek the distribution of the estimate resulting from the random sample, on condition that the original limited population itself belongs to a distribution as the result of some process or other.     

Inflation and firm growth: A reassessment

Investigations into the impact of inflation on firm growth have resulted in ambiguous conclusions within the economic growth and financial management literature. This paper will attempt to clarify this situation and describe conditions under which firm growth will be helped or hindered by inflaction. This is accomplished by constructing a financial modelling framework which incorporates the findings of earlier research and allows the various effects to be contrasted and cumulatively assessed. Our findings suggest that conditions under which inflation may be beneficial to firm growth do exist but are realistically improbable.     

Pathways to a Good Job: Perceived Work Quality among the Machinists in North America

This paper examines the perceived quality of jobs held by a sample of members of the International Association of Machinists, a large union in North America. It is argued that useful insights can be obtained by examining the relationships between global and specific measures of job quality. We then compare two ways of linking them: the regression or correlational‐causation approach and the configurational approach that regards jobs as ‘bundles’ of various characteristics. Our results suggest that there are various pathways by which workers may consider jobs to be ‘good’ but that job quality among the machinists is related especially to satisfaction with benefits, interesting work and autonomy.     

The 2009 Nobel Prize in Economics to Oliver E. Williamson: Recognition of the Influence of Transaction Cost Economics on Business Research

This article provides an introduction to the Journal of Retailing Special Issue dedicated to Oliver Williamson and transaction cost economics. The paper briefly outlines transaction cost economics contributions to marketing and related social sciences.     

Co-Creating Value in a Retail Market Setting

It is usually assumed that the co-creation of value requires a close relationship between producers and customers. Typically, this is easier in a business-to-business context, where the numbers of customers and suppliers are relatively low and the capabilities and needs of each partner can readily be assessed. On the other hand, it could be assumed that the co-creation of value in a business-to-consumer context is likely to be more difficult, given the larger numbers of customers and more frequent, short-term, discrete transactions. This article investigates whether it is possible to co-create valuable consumer experiences in a mass market setting by examining the customer relationship strategies of eight Norwegian seafood retailers. The results show that considerable effort from both retailers and consumers are devoted to co-create valuable consumer experiences. We also reveal a repertoire of strategies to engage customers in the co-creation process. Findings are discussed and implications highlighted.     

Intertemporal labor supply and involuntary unemployment

We estimate a model of intertemporal male labor supply behavior which explicitly accounts for the effect of income taxation and the transfer system. Moreover, we model the demand-side driven rationing risk that prevents agents from choosing the optimal labor supply state. Our results show that elasticities derived in an unconstrained pure choice model are significantly higher compared to a model with involuntary unemployment. This holds true for short-run and long-run labor supply elasticities.     

Vouchers and caseworkers in training programs for the unemployed

This paper studies the role of vouchers and caseworkers in training programs for the unemployed. We explore the unique features of the Hartz reform in Germany which simultaneously introduced training vouchers and imposed more selective criteria on participants. This allows us to go beyond the standard approach when we estimate the treatment effects for the most important type of training. Next to assessing the overall impact of the reform on the training’s effectiveness, we isolate the impact induced by changes in the composition of program participants (selection effect) from the impact based on the introduction of vouchers and related institutional changes (institutional effect). Our results show a small positive overall impact of the reform. The decomposition suggests that the selection effect is, if at all, slightly negative, and that the introduction of the voucher and related institutional changes increased both employment and earnings of participants. It furthermore appears that our findings are driven by skilled participants.     

Pricing options with Green's functions when volatility,interest rate and barriers depend on time

We derive the Green's function for the Black–Scholes partial differential equation with time-varying coefficients and time-dependent boundary conditions. We provide a thorough discussion of its implementation within a pricing algorithm that also accommodates American style options. Greeks can be computed as derivatives of the Green's function. Generic handling of arbitrary time-dependent boundary conditions suggests our approach to be used with the pricing of (American) barrier options, although options without barriers can be priced equally well. Numerical results indicate that knowledge of the structure of the Green's function together with the well-developed tools of numerical integration make our approach fast and numerically stable.