Public policies as specification errors

Treating public policies as computable dynamic general equilibrium model specification errors offers computational and conceptional advantages for comparing models with data. The set of policies calculated to rationalize observed behaviors raises the substantive economic question whether, in any particular market, actual public policies sufficiently coincide with the model's behavior-rationalizing policies, or whether the model offers correct hypotheses about the determinants of demand and supply. As illustrations, public policies are calculated to rationalize, with respect to the stochastic neoclassical growth model, capital market behavior since WWII and labor market behavior in 1929–1950. One conclusion is that capital taxation drives a wedge between consumption growth and the expected pre-tax capital return, in the direction and amount predicted by the theory, and that capital taxation is the major intertemporal distortion in the postwar capital market. Second, a good theory of the Great Depression labor market must explain why measured MRS and MPL diverged so dramatically in 1929–1933 and why the wedge persisted.     

Measuring Aggregate Human Capital

Weconstruct a set of human capital indexes for the states of theUnited States for each census year starting in 1940. To do so,we propose a new methodology for the construction of index numbersin panel data sets. Our method is based on an optimal approachby which we choose the ``best' set of index numbers by minimizingthe expected estimation error subject to some research constraints.Some of the empirical findings are that the stock of human capitalin the United States grew twice as rapidly as the average yearsof schooling and that human capital inequality across stateswent up during the 1980s (while the dispersion of schooling actuallyfell). We conclude that using the average years of schoolingfor the empirical study of existing growth models may be misleading.     

Profiling road transport activity: Emissions from 2000 to 2005 in Ireland using national car test data

This work describes a methodology for determining the average vehicle kilometres travelled by the private national car fleet in Ireland and estimating the disaggregated CO₂ and NO_x emissions from private vehicles in the Irish road transport sector for the period 2000–2005 using national car test records. The developed methodology facilitates the calculation of greatly improved estimates for vehicle kilometres under a range of constraint variables and thereby enables the disaggregated analysis of specific vehicle fleet groups and their associated activity patterns to support evidence-based policy development. The results indicate that while older vehicles are contributing significantly to car NO_x emissions; newer cars produce a higher share of CO₂ emissions than older cars in the vehicle fleet.     

How does PLM technology support knowledge transfer and translation in new product development? Transparency and boundary spanners in an international context

Information Technology is often viewed as imposing too much standardization and limiting flexibility in New Product Development (NPD). This paper aims at understanding how the use of Product Lifecycle Management Technology (PLM) contributes to knowledge sharing in an international NPD environment. The research is based on a longitudinal case study of a consumer goods industry group and involved development teams in Europe and local suppliers in China. Knowledge transfer and translation were observed through the reduction of communication glitches among members and increased NPD work with Chinese suppliers. The results of the case study indicate that (1), with an important codification effort, the use of PLM technology resulted in higher data and network transparency and enhanced knowledge transfer; (2) PLM served as a particularly useful tool for knowledge translation especially for boundary spanners in their work relationships. While PLM can be considered the main mechanism for knowledge transfer in this context, the case suggests that knowledge translation requires a boundary spanner intervention and that, with the use of PLM, they reinforce each other. Particularly noteworthy was a positive shift in the boundary spanners' roles from the project leader to the outsourcing engineer. In turn, this unintended consequence reinforced their credibility and the legitimacy of the use of the system with the Chinese suppliers.     

Techno-economic modeling of value network configurations for public wireless local area access

The growing amount of mobile data traffic increases the demand for local area network deployments, and therefore is likely to have an effect on the mobile communications ecosystem. Several alternative value network configurations exist giving new business opportunities to different actors, but the attractiveness and success of local area access provisioning remains uncertain. This article analyzes the business of public local area access from the point of view of two potential providers: service application providers, i.e. companies whose core business is to provide information and content services in the Internet, and mobile operators. A quantitative techno-economic model is constructed to quantify the costs and required revenues of operating viable public local area access networks. The results show that the revenue requirements vary between public venue types and value network configurations.     

Do Analysts' Cash Flow Forecasts Encourage Managers to Improve the Firm's Cash Flows? Evidence from Tax Planning

Recent research finds that analysts' cash flow forecasts have meaningful financial reporting ramifications, but, to date, the identified effects are unlikely to yield meaningful cash flow benefits. This study examines whether analysts' cash flow forecasts encourage managers to enhance the firm's cash flow position through tax avoidance activities. We evaluate the change in cash tax avoidance after analysts begin issuing cash flow forecasts relative to a propensity score matched control sample of firms without cash flow forecasts. Consistent with analysts' cash flow forecasts encouraging tax avoidance that enhances the firm's cash flow health, we find a negative association between cash tax payments and analysts' cash flow coverage. Additional analysis suggests this association is driven primarily by strategies to permanently avoid rather than to temporarily defer tax payments and that increased cash tax avoidance activity represents a nontrivial component of the overall increase in reported operating cash flows after the initiation of analysts' cash flow coverage.