Labor share dynamics: a survey of the theory

The present paper presents a survey of the main works that analyze labor share dynamics from a theoretical point of view. It tries also to reconcile the different approaches to the issue into a unifying framework represented by the so called SK schedule.Labor Share, Factor Shares

Note on a Two-Player All-pay Auction with Asymmetrical Bidders and Incomplete Information

The present paper analyzes a general class of first-price all-pay auctions where two players have different "bidding technologies" and one bidder has a head start advantage over his/her opponent. Equilibria are characterized for the complete information setting and for the case where there is incomplete asymmetrical information. In particular, the handicapped player is uncertain about the size of the opponent’s advantage.All-pay auctions and Auction theory and Games with asymmetrical players and Incomplete information games

Labour market regulation and retirement age

Pension system and labor market reforms are widely debated issues in all industrialized countries and especially in Europe; any change over these two aspects of the Social Security System indeed, can affect heavily the functioning of the whole economy.A preminent role in this sense is played by employment protection regulation and by the mandatory retirement age; in this paper I focus on the political economy of such social policies jointly and consider the interaction between the choice over the protection of the employees in the labour market and that over retirement age. In particular, I look at the effects of the turnover generated either by temporary, selective exits due to the dynamic of the labour market or by permanent, non-selective exits due to retirements. The degree of employment protection and the mandatory retirement age emerge as a result of the political bargaining between three social groups: young, high and low prductivity old. Workforce composition in this setting defines the efficiency of the economy and determine the rise of a social consensus towards different assets of the Social Security Systemsocial security, turnover on the labor market, political equilibria, employment protection, retirement age

Space robotic system for proximity operations

Key to an efficient accomplishment of space station servicing operations is the development of a scenario where the presence of man in space is well integrated with the capability of teleoperated and automatic robot system outside the stations. Results focusing on mission requirements, trajectory sequences, propulsion subsystem features, and manipulative kit characteristics relevant to proximity servicing during a Man Tended Free Flyers Robotic Mission (MTFF-RM) are illustrated

Approximated integrability of the Dicke model

A very approximate second integral of motion of the Dicke model is identified within a broad region above the ground state, and for a wide range of values of the external parameters. This second integral, obtained from a Born Oppenheimer approximation, classifies the whole regular part of the spectrum in bands labelled by its corresponding eigenvalues. Results obtained from this approximation are compared with exact numerical diagonalization for finite systems in the superradiant phase, obtaining a remarkable accord. The region of validity of our approach in the parameter space, which includes the resonant case, is unveiled. The energy range of validity goes from the ground state up to a certain upper energy where chaos sets in, and extends far beyond the range of applicability of a simple harmonic approximation around the minimal energy configuration. The upper energy validity limit increases for larger values of the coupling constant and the ratio between the level splitting and the frequency of the field. These results show that the Dicke model behaves like a two-degree of freedom integrable model for a wide range of energies and values of the external parameters.Comment: 6 pages, 3 figures. Second version with added text, references and some new figure

Parameterized thermal macromodeling for fast and effective design of electronic components and systems

We present a parameterized macromodeling approach to perform fast and effective dynamic thermal simulations of electronic components and systems where key design parameters vary. A decomposition of the frequency-domain data samples of the thermal impedance matrix is proposed to improve the accuracy of the model and reduce the number of the computationally costly thermal simulations needed to build the macromodel. The methodology is successfully applied to analyze the impact of layout variations on the dynamic thermal behavior of a state-of-the-art 8-finger AlGaN/GaN HEMT grown on a SiC substrate