Inflation Dynamics’ Micro Foundations: How Important is Imperfect Competition Really?

This paper analyzes price formation and dynamics according to the industry structure. It divides manufacturing industries of Mexico into two groups: perfectly and imperfectly competitive. The results show that imperfectly competitive industries predominate. Then this classification is used to build consumer price sub indexes for the goods of both sectors. These sub indexes’ inflation dynamics indicate that the exchange rate pass-through in the perfectly competitive sector is significantly higher than in the imperfectly competitive sector, while wage pass-through only affects the imperfectly competitive sector. Also, that inflation inertia is lower in the former than in the latter; adding up in more volatility of the perfectly competitive inflation rate. For policy makers an interesting feature of the perfectly competitive price index is that the evidence suggests that its variations precede those of the imperfectly competitive price index. For economic theorists these features validate recent macroeconomic models with heterogeneous price setting behaviorPanzar-Rosse, Industry Structure, Inflation, Price Dynamics, Price Indexes

Non-hermitian approach to decaying ultracold bosonic systems

A paradigm model of modern atom optics is studied, strongly interacting ultracold bosons in an optical lattice. This many-body system can be artificially opened in a controlled manner by modern experimental techniques. We present results based on a non-hermitian effective Hamiltonian whose quantum spectrum is analyzed. The direct access to the spectrum of the metastable many-body system allows us to easily identify relatively stable quantum states, corresponding to previously predicted solitonic many-body structures

The gauge action, DG Lie algebra and identities for Bernoulli numbers

In this paper we prove a family of identities for Bernoulli numbers parameterized by triples of integers $(a,b,c)$ with $a+b+c=n-1$, $n\ge 4$. These identities are deduced while translating into homotopical terms the gauge action on the Maurer Cartan Set which can be seen an abstraction of the behaviour of gauge infinitesimal transformations in classical gauge theory. We show that Euler and Miki's identities, well known and apparently non related formulas, are linear combinations of our family and they satisfy a particular symmetry relation.Comment: Small modifications. To appear in Forum Mathematicu

Key factors and barriers to the adoption of cold ironing in europe

The first cases of successful implementation of cold ironing can be found in Alaska about twenty years ago. In that case, the energy cost was lower than in Europe where cold ironing has been developed only in the latest years at few ports. The present paper investigates the innovative process of cold ironing at European level. Firstly, its recent development in Europe is documented as well as the main concern of its corresponding legislation. Then, the adoption of this initiative by the “green ports” concept is discussed. Secondly, the technical barriers, such as lack of standardization of electricity parameters are mentioned. And given that port electrical infrastructure needed onshore represents a huge investment that not all ports are financially able to do, the financial problematic is treated explicitly taking into account the cost of energy at ports (directly provided by electric centrals or converted) against the energy cost onboard. Finally, conclusions are drawn covering the main barriers confronted by this technology and the future premises of cold ironing at European ports considering the social and environmental benefits in terms of air and noise pollution.cold ironing, energy cost, technology barrier, European ports, environmenta

Influence of temperature on the performance of wetlands treating chlorinated volatile organic compounds

Various studies have presented models to predict the performance of constructed wetlands at different temperatures focused on the removal of conventional pollutants, and common configuration of constructed wetlands. Investigations on the effect of temperature on the performance of constructed wetlands treating chlorinated volatile organic compounds are limited to microcosm studies. This study is meant to come up with kinetic and energy balance input data for mathematical models that can be used to predict the performance of upflow constructed treatment wetlands treating chlorinated ethenes and ethanes at different ambient temperatures. Bench scale continuous upflow columns will be conducted to investigate the effect of temperature on the performance of upflow constructed wetlands treating volatile organic compounds (CVOCs). The columns will be packed with two types of wetland bed materials. For the first treatment the constructed wetland will be packed with row crop compost/ soil builder compost/ sand. The second one will be packed with Bion Soil®/Latimer peat/Sand. Both upflow constructed columns will be operated under a controlled environment to simulate field conditions at four phases of temperature (30ºC, 20ºC, 10ºC, and 5ºC). Thermal conductivity coefficients will be determined for wetland bed materials of interest. The results on theses studies will be used as energy balance input data for mathematical models that can be used to predict the performance of upflow constructed treatment wetlands treating chlorinated ethenes and ethanes at different ambient temperatures

Sharp values for the constants in the polynomial Bohnenblust-Hille inequality

In this paper we prove that the complex polynomial Bohnenblust-Hille constant for $2$-homogeneous polynomials in ${\mathbb C}^2$ is exactly $\sqrt[4]{\frac{3}{2}}$. We also give the exact value of the real polynomial Bohnenblust-Hille constant for $2$-homogeneous polynomials in ${\mathbb R}^2$. Finally, we provide lower estimates for the real polynomial Bohnenblust-Hille constant for polynomials in ${\mathbb R}^2$ of higher degrees.Comment: 16 page

Efficient model for electronic transport in high energy-density matter

A wide-ranging effective Boltzmann approach, originally intended for ionic transport, is applied to the computation of electronic transport coefficients without modification. Comparisons with datasets that resulted from a recent transport coefficient workshop and molecular dynamics simulations are made. While this model contains correlation information through its effective potential and strong scattering through its use of cross sections, it misses details of attractive, possibly quantum, interactions; comparisons with that dataset reveal the relative importance of these physics inputs. Through comparisons of data for electrical conductivity, thermal conductivity, temperature relaxation, and stopping power (including a new formula for the energy split due to alpha stopping), we find that the sensitivity to the missing physics is minor and often negligible. Thus, we have a single transport model that self-consistently provides all ionic and electronic transport properties in a form with negligible computational cost

On the systole growth in congruence quaternionic hyperbolic manifolds

We provide an explicit lower bound for the systole in principal congruence covers of compact quaternionic hyperbolic manifolds. We also prove the optimality of this lower bound