Publications
In this paper, we study how rents are shared between capital and labour, using industry‐level panel data for 19 OECD countries from 1988 through to 2007. The first step is an explanation of the rent‐creation process. We provide evidence of a significant impact of regulation on value‐added prices at the industry level relative to the value‐added price for the overall economy (rent). In the second step, we dissect the value‐added sharing process. By running ordinary least‐squares and instrumental variables estimations, we obtain results that confirm the Blanchard–Giavazzi prediction: the impact of rents on the capital share depends on workers' bargaining power.
We introduce and examine an inexact multi-objective proximal method with a proximal distance as the perturbation term. Our algorithm utilizes a local search descent process that eventually reaches a weak Pareto optimum of a multi-objective function, whose components are the maxima of continuously differentiable functions. Our algorithm gives a new formulation and resolution of the following important distributive justice problem in the context of group dynamics: In each period, if a group creates a cake, the problem is, for each member, to get a high enough share of this cake; if this is not possible, then it is better to quit, breaking the stability of the group.
The father of the “Austrian” Marginalist revolution and founder of the so-called “Austrian School of economics”, Carl Menger, had a mixed reception during different periods of development of French economics. Somewhat welcomed in the early days, he was rather forgotten later on. Even his major works were not published in translation until recently. What is the reason for such a situation? Criticisms of classical political economy have to be understood in their French context. In comparison to other countries, this paper details the case of France, besides showing how later Austrians, such as Friedrich Hayek, found a limited audience. This comparative study of economic ideas in France must start with the reception of the views of the founder and the role and impact of adopting/adapting or rejecting his views by French scholars. What place did they find in French academia? From Carl Menger to a “Frenchified” Charles Menger, how was Austrian economic thought disseminated in France? This essay starts by recalling the Belle-Époque and an astonishing letter by Charles Rist for the Jubiläum of Menger, in which he deplored the lack of translation of the latter’s works. The Austrian School in France is then discussed as pure economics replaces political economy in the Interwar period, with the 1938 Paris Congress of “liberal thinkers,” as the Vienna Circle became known, also comparing issues in philosophy. The paper considers how Austrian theories of “pure science” were received in Paris from the Vienna of the 1900s, at a time of ”Crossroads,” to the present day, through the Postwar and Cold War, until a revival since the 1990s and a rethinking of economic ideas after 2008.
In a similar way to the stock market, the housing market in China has often been portrayed as highly speculative, giving rise to “bubble” concerns. Over the last decade, residential prices increased every year on average by double digits in Beijing or Shanghai. However many observers and researchers argue that fundamentals of the housing sector, both sector-specific and macroeconomic, may have been the driving force behind housing price volatility. While existing empirical work exclusively relies on the government housing prices which may suffer from the well-documented downward bias, this paper uses original high frequency unit price as well as transaction series for the residential resale housing markets of Beijing and Shanghai between January 2005 and December 2010 to test alternative hypotheses about housing prices volatility.
This paper investigates whether trading volume and price distortion can be explained by the investor’s bounded rationality. Assuming that agents are bounded by their information access and processing, what are the consequences on market dynamics? We expose the result of simulations in an ABM that considers the liquidity as an endogenous characteristic of the market and allows to design investors as bounded rational. In a call auction market, where two risky assets are exchanged, traders are defined as a mix between fundamentalist and trend-follower outlook. Each one differs as to behaviour, order-placement strategy, mood, knowledge, risk-aversion and investment horizon. We place agents in a context of evolving fundamental values and order placement strategy; they perceive the fundamental but they also have some heterogeneous belief perseverance; and they adapt their orders to the market depth so as to maximise their execution probability and their profit. By adding bounded rationality in their information processing, we show that (1) usual features as trend-follower outlook and heterogeneous investment horizon are important features to generate excess volatility of asset prices and market inefficiency; (2) the learning fundamental value stabilises the market price and the trading volume; (3) the order-placement strategy increases trading volume, but reduces market efficiency and stability; (4) the agent’s mood prevents illiquid market and weakly increases the market volatility as classical noise trader agents; (5) the impatience to sell of traders is always present in the market: the market sell orders are always more numerous than the market buy orders.
This paper shows the uneven role played in the inflation dynamics of African franc zone countries by their integration in a regional monetary union. We obtain three main results sharply contrasting the central- (CEMAC) and west-African (WAEMU) regions. First, differences in the structure of economies and national fiscal stances play a similar role in both unions and appear as potential sources of inflation differentials. Second, even though co-movements are the principal drivers of inflation dynamics in both subregions, global factors dominate regional ones in WAEMU while both play an equal role in CEMAC. Thirdly, spatial interactions are unimportant in CEMAC due to little intra-zone trade, but take an asymmetric form in WAEMU due to the large size of Ivory Coast and Senegal.
Biological invasions entail massive biodiversity losses and tremendous economic impacts that justify significant management efforts. Because the funds available to control biological invasions are limited, there is a need to identify priority species. In this paper, we first review current invasive species prioritization methods and explicitly highlight their strengths and pitfalls. We then construct a cost–benefit optimization framework that offers the theoretical foundations of a simple method for the management of multiple invasive species under a limited budget. We provide an algorithm to operationalize this framework and render explicit the assumptions required to satisfy the management objective.
In this paper, we report the results of risk attitudes elicitation of a French general practitioners national representative sample (N=1568).
In this article we extend the research on risk-based asset allocation strategies by exploring how using an SRI universe modifies properties of risk-based portfolios. We focus on four risk-based asset allocation strategies: the equally weighted, the most diversified portfolio, the minimum variance and the equal risk contribution. Using different estimators of the matrix of covariances, we apply these strategies to the EuroStoxx universe of stocks, the Advanced Sustainability Performance Index (ASPI) and the complement of the ASPI in the EuroStoxx universe from March 15, 2002 to May 1, 2012. We observe several impacts but one is particularly important in our mind. We observe that risk-based asset allocation strategies built on the entire universe, concentrate their solution on non-SRI stocks. Such risk-based portfolios are therefore under-weighted in socially responsible firms.
