Technical systems and cross-sector knowledge diffusion: an illustration with drones

If cumulativeness is one feature of knowledge as economic good [Foray, D. 2006. The Economics of Knowledge. Cambridge, MA: The MIT Press], one may wonder why knowledge produced in a given sector does not result in several applications thorough the whole economy. Therefore it is important to understand the dynamics of knowledge that helps a given piece of knowledge to overcome sectorial silos and become more transversal. Here, focusing on Drones, patents analysis reveals how different technical systems use or do not use the same knowledge to solve identical issues or needs. This paper offers three major advantages. First, it allows distinguishing between component knowledge linked with technological bricks and architectural knowledge linked with system integration. Second, it opens new possibilities to measure the transversality of knowledge or its duality (beyond the debates in defense economics). And finally, it offers the opportunity to empirically analyse duality using patent databases.     

Costs of hospital visits among patients with deep vein thrombosis treated with rivaroxaban and LMWH/warfarin

Background:

For many years, the standard of care for patients diagnosed with deep vein thrombosis (DVT) has been low-molecular-weight heparin (LMWH) bridging to an oral Vitamin-K antagonist (VKA). The availability of new non-VKA oral anticoagulants (NOAC) agents as monotherapy may reduce the likelihood of hospitalization for DVT patients.

Objective:

To compare hospital visit costs of DVT patients treated with rivaroxaban and LMWH/warfarin.

Methods:

A retrospective claim analysis was conducted using the MarketScan Hospital Drug Database for care provided between January 2011 and December 2013. Adult patients using rivaroxaban or LMWH/warfarin with a primary diagnosis of DVT during the first day of a hospital visit were identified (i.e., index hospital visit). Based on propensity-score methods, historical LMWH/warfarin patients (i.e., patients who received LMWH/warfarin before the approval of rivaroxaban) were matched 4:1 to rivaroxaban patients. The hospital-visit cost difference between these groups was evaluated for the index hospital visit, as well as for total hospital-visit costs (i.e., including index and subsequent hospital visit costs).

Results:

All rivaroxaban users (n?=?134) in the database were well-matched with four LMWH/warfarin users (n?=?536). The mean hospital-visit costs were $5257 for the rivaroxaban cohort and $6764 in the matched-cohort of patients using LMWH/warfarin. The $1508 cost difference was statistically significant between cohorts (95% CI?=?[?$2296; ?$580]; p-value?=?0.002). Total hospital-visit costs were lower for rivaroxaban compared to LMWH/warfarin users within 1, 2, 3, and 6 months after index visit (significantly lower within 1 and 3 months, p-values <0.05)

Limitations:

Limitations were inherent to administrative-claims data, completeness of baseline characteristics, adjustments restricted to observational factors, and lastly the sample size of the rivaroxaban cohort.

Conclusion:

The availability of rivaroxaban significantly reduced the costs of hospital visits in patients with DVT treated with rivaroxaban compared to LMWH/warfarin.     

Longitudinal evidence on financial expectations in Albania

This article focuses on the effect of remittances on financial expectations in Albania using longitudinal data covering the period 2002–2004. To study the dynamics of income satisfaction at the household level, we use subjective data on past, current and future financial situations and estimate random and fixed effect ordered Probit models. We find that households are more optimistic about the future when they have experienced an improvement in their financial situation in the past and when they have received private transfers from foreign countries.     

The Impact and Importance of Mandatory Adoption of International Financial Reporting Standards in Europe

In this paper we report the results of conducting a two‐stage analysis on the impact and importance of mandatory adoption of international accounting reporting standards (IFRS) on European Union firms. In the first stage we determined the impact of mandatory adoption of IFRS across 13 countries and twenty industries. This was accomplished by identifying significant differences in return on assets (ROA) for firms computed under IFRS and local, generally accepted accounting principles (LG). Significant positive differences were detected for firms in Belgium, Finland, France, Italy, the Netherlands, Sweden, Switzerland and the United Kingdom: only German and Norwegian firms exhibited a negative average significant difference between ROA calculated using IFRS and LG. Repeating the analysis of differences in ROA on an industry‐by‐industry basis yielded additional Portuguese and Spanish firms for the second stage of the analysis in which the impact of mandatory IFRS adoption was assessed. Defining impact in terms of market and financial reporting quality, we found a statistically significant relationship between accounting information and market returns for firms in the all‐countries‐combined sample of 3,530 observations, and in the countries of Belgium, Finland, France, Greece, Italy, the Netherlands, Norway, Sweden and the United Kingdom. Support for the timeliness of accounting information was uncovered for firms in the all‐countries‐combined sample, and in the countries of Belgium, Finland, France, Germany, Italy, the Netherlands, Norway, Sweden and Switzerland. Finally, evidence to support the proposition that accounting regimes produce quality discretionary accruals was found for firms from the all‐countries‐combined sample of 3,480 observations and from Finland, Greece, the Netherlands, Sweden and the United Kingdom. When comparing differential accounting information constructed under IFRS and LG, however, few differences could be found. Specifically, there was no statistical support for any of the samples that accounting information produced under IFRS was any more value relevant than the accounting information derived using LG. When our examination shifted to the timeliness of earnings, a positive differential impact between earnings constructed on the basis of IFRS and local accounting standards was detected only for the all‐countries‐combined sample. Finally, the quality of discretionary accruals was shown to be significantly higher under IFRS than LG for firms in Finland, Greece and Sweden.     

DOES WAGE DISPERSION MAKE ALL FIRMS PRODUCTIVE?

This article puts the relationship between wage dispersion and firm productivity to an updated test, taking advantage of access to detailed Belgian linked employer–employee panel data. Controlling for simultaneity issues, time‐invariant workplace characteristics and dynamics in the adjustment process of productivity, empirical results reveal the existence of a positive impact from conditional intra‐firm wage dispersion to firm productivity (measured by the average value added per hour worked), which however decreases for higher dispersion levels. Findings thus suggest that the incentive effect of wage dispersion, predicted for instance by the ‘tournament’ model, dominates ‘fairness’ and/or ‘sabotage’ considerations. Further results reveal that the influence of wage dispersion on firm productivity is stronger among firms with a larger proportion of highly skilled workers but does not depend on whether wages are collectively renegotiated at the firm level.     

Multi‐Level Efficacy Evidence of a Combined Interprofessional Collaboration and Project Management Training Program for Healthcare Project Teams

Project work is essential for the improvement of healthcare organizations; yet, project management and collaboration in the project context are not taught to healthcare professionals. Three half‐day training workshops integrating project management and collaboration were designed and delivered to 14 interprofessional healthcare project teams. Multivariate measures were taken over the course of 36 weeks. Individual, team, and project‐level results showed high satisfaction and perceptions of utility; improved self‐efficacy for project‐specific task work and teamwork; increased goal clarity and coordination; and a significant impact on the functional performance of projects. This study provides initial benchmark measures regarding the pertinence of project management and interprofessional collaboration training for healthcare project teams.     

THE INTELLECTUAL STRUCTURE OF SUPPLY CHAIN MANAGEMENT: A BIBLIOMETRIC APPROACH

Now that supply chain management has a two‐decade research history, it is possible to examine the literature to identify whether there is any latent intellectual structure using bibliometric tools. The study applies a citation and co‐citation approach to reveal four clusters of research that have emerged. One cluster has strong ties to the logistics field, with primarily conceptual articles. A second cluster finds its roots in operations research, and consists mainly of modeling articles. The application of multidimensional scaling, cluster analysis, and factor analysis on co‐citations demonstrated a clearly identifiable structure. The structure is examined and implications for the future development of supply chain research are discussed.     

Working Hours and Sustainable Development

Many works on sustainable development stress the part played by reduced working hours in the promotion of a model for alternative development. The direct link between working hours and the environment, however, still deserves to be supported. This is the issue we would like to discuss through an analysis of the relationships between consumption and working hours. We use surveys on French household expenses to highlight the environmental consequences of long hours: they encourage goods and energy-intensive consumptions and favour conspicuous expenditure and non-sustainable lifestyles.     

A panel data robust instrumental variable approach: a test of the new Fama-French five-factor model

Fama and French (FF, 2015) propose a new five-factor asset pricing model that adds profitability and investment patterns to the market, size and value variables used in FF (1992). Our purpose is to investigate this new model using an improved generalized method of moments (GMM)-based robust instrumental variables technique in a fixed-effects panel data framework. To test for measurement errors, we use a modified Hausman artificial regression. We also examine an augmented FF six-factor model that includes the Pástor–Stambaugh (PS, 2003) liquidity factor. Using the FF dataset, our GMM-based panel data approach leads us to conclude that the only consistently significant factor is the market factor.