Spatial differentiation,divisible consumption and the pro-competitive effect of income

We analyze a spatial differentiation model with divisible consumption under one-stop shopping. Each consumer who visits only one store, chooses the quantities of the goods which maximize his/her utility function under the budget constraint (namely consumption expenditures must equal income minus transportation costs), choosing the store which provides him/her with the largest indirect utility. We derive the equilibrium price when the firms are located at the two extremities of Hotelling’s linear city and show that income increases have a pro-competitive effect.     

Impact of the adoption of information and communication technologies on firm efficiency in the Tunisian manufacturing sector

This paper aims at measuring the impact of information and communication technology use on the efficiency of the Tunisian manufacturing sector at the firm level within a simple theoretical framework. We are using a firm-level panel data for the manufacturing sector in Tunisia to investigate whether adoption of ICT influences efficiency in factor use. The analysis is conducted through the use of a parametric method to measure technical efficiency. We estimate a stochastic production frontier and the relationship aims to explain technical efficiency differentials in a single stage as suggested by Battese and Coelli [Battesse, G.E, Coelli, T.J. (1995). A model for technical inefficiency in a stochastic frontier production function for panel data. Empirical Economics, 20, 325–332].The results have confirmed the presence of positive returns to ICT capital. We have found that the impact of ICT on efficiency is strong. Our results also suggest that it is important to carefully control for human capital related characteristics of employment when studying the effect of ICT. The evidence shows that achieving benefits from investment in ICT requires complementary investments and changes in human capital. This means that the combined use of ICT and human capital in a firm would enhance its efficiency beyond the direct effects of these factors taken alone.     

Structural transformation in Egypt,Morocco and Tunisia: Patterns,drivers and constraints

This study analyses structural transformation in three Middle East and North Africa (MENA) countries: Tunisia, Morocco and Egypt over a large time period (1960–2010). We examine labour productivity evolution and structural change contribution to productivity growth over different sub‐periods. We analyze the contribution of different economic sectors to aggregate structural change in the three countries. An econometric analysis is also performed to identify the main factors underlying the intensity and the pattern of structural change. Results suggest that the three countries initiated and achieved some progress in structural transformation over the 1970s, 1980s and early 1990s. However, this process has stagnated at low‐income levels and has remained unfinished. Deindustrialization occurred at an early stage of development in the three countries, in contrast to that noticed in developed and emergent countries. The results of the econometric analysis suggest a significant and positive association between investment and structural change as capital accumulation increases the future productive capacity and triggers reallocative efficiency. The human capital quality and availability has a positive and significant impact on structural change. Trade openness is also expected to boost structural transformations. However, labour market rigidity hampers structural transformation.     

Eco-labelling, Competition and Environment: Endogenization of Labelling Criteria

This paper suggests a modelling of the labelling procedure consistent with empirical observations, that allows the endogenous calculation of labelling criteria. The authority in charge of the labelling program chooses the level of labelling criteria so as to maximise the social surplus, anticipating competition between firms in environmental qualities and prices. While accounting simply for the informational role of labels, this model allows to understand observed behavior such as firms’ ignorance of a label, resistance, support or indifference of firms to the labelling program and the decision of the authority not to set up a label. Grateful thanks are due to Jean-Marc Bonnisseau, Antoine Soubeyran, Joan Canton and an anonymous referee for very helpful comments and suggestions.     

Assessing the Effects of Leadership Styles on Employees’ Outcomes in International Luxury Hotels

This study examines the effects of transformational, transactional, and non-transactional leadership on hotel employees’ outcomes including extra effort, perceived efficiency, and satisfaction with managers. Employees from eleven 4-star hotels in Spain provided the collected data. A series of statistical analyses (1) identify the elements of three leadership styles using a multi-factor leadership questionnaire (MLQ-5X); (2) examine the effect of leadership styles on employees’ outcomes. The results of this study indicate that “idealized attributes” of transformational leadership and “contingent reward” from transactional leadership are the most important factors that positively affect all three outcomes (i.e., extra effort, perceived efficiency, and satisfaction); and (3) to assess the moderating effect of different types of ownership of hotel properties on the relationship between styles of leadership and outcomes of employees’ activities other than these two elements, the significant factors indicating positive or negative relationships vary depending on the types of individual outcomes as well as ownership of hotel properties. The discussion sections indicate theoretical and practical implications of the findings.     

Poverty,competition, democracy,and ownership: A general equilibrium model with vertical preferences

We consider a general equilibrium model where individuals are simultaneously workers, consumers, and shareholders, with two possible market structures: Monopoly and Duopoly, and two extreme ownership structures: egalitarian and concentrated. Considering three standard poverty indicators, the questions are, whether more competition generates more or less poverty for a given ownership structure; and whether a democratic choice between Monopoly and Duopoly leads to the alternative with less poverty. When the ownership is concentrated, we show that Duopoly generates less poverty than Monopoly and the majority votes for the alternative with less poverty. When the ownership is egalitarian, Duopoly may generate more or less poverty and democratic choice alleviates poverty regarding at least one poverty indicator and worsens poverty regarding at least another one, the three poverty indicators never converging. An empirical study on the effect of competition on poverty supports to some extent our theoretical findings.     

Inverse-probability-weighted logrank test for stratified survival data with missing measurements

The stratified logrank test can be used to compare survival distributions of several groups of patients, while adjusting for the effect of some discrete variable that may be predictive of the survival outcome. In practice, it can happen that this discrete variable is missing for some patients. An inverse-probability-weighted version of the stratified logrank statistic is introduced to tackle this issue. Its asymptotic distribution is derived under the null hypothesis of equality of the survival distributions. A simulation study is conducted to assess behavior of the proposed test statistic in finite samples. An analysis of a medical dataset illustrates the methodology.     

Quality and capacity choices in a vertical differentiation model with congestion

We consider a vertically differentiated market in which consumers’ utility is assumed to depend on the price, congestion level and the stand‐alone quality of the good or service. Two firms compete on this market, choosing capacities, stand‐alone qualities and prices. We characterize completely the subgame perfect equilibrium for the homogenous market case (where only one firm is active without congestion). We prove that both firms are active, choosing minimal differentiation along the capacity and quality dimensions. Therefore, the presence of congestion rules out market preemption as a possible outcome in equilibrium and weakens the incentive to differentiate.     

Threshold effects in the patent-growth relationship: a PSTR approach for 60 developed and developing countries

ABSTRACT

This study analyzes whether there is a threshold effect in the innovation-growth relationship. Using data from the period 2008–2017, we perform an analysis using 60 countries in the whole sample and a split-sample analysis in which we separate developed countries (36) from developing countries (24). The results for the panel smooth transition regression (PSTR) model indicate that there is a threshold effect in the innovation-growth relationship. We find that below the threshold, the effect of innovation measured by the number of patents is not significant for developed and developing countries. However, surpassing the optimal threshold, the effect becomes positive only for the whole sample and developed countries. Furthermore, findings also indicate that research and development expenditure, domestic and foreign investments stimulate economic growth.