“A Small Price to Pay: Consumer Culture on the Canadian Home Front, 1939-1945 (Book Review)” by Graham Broad

Review of A Small Price to Pay: Consumer Culture on the Canadian Home Front, 1939-1945 by Graham Broa

QED corrections to the Altarelli-Parisi splitting functions

We discuss the combined effect of QED and QCD corrections to the evolution of parton distributions. We extend the available knowledge of the Altarelli-Parisi splitting functions to one order higher in QED, and provide explicit expressions for the splitting kernels up to ${\cal O}(\alpha \, \alpha_{\mathrm{S}})$. The results presented in this article allow to perform a parton distribution function analysis reaching full NLO QCD-QED combined precision.Comment: 11 pages, 1 figure. References added, improved discussion. Final version published in EPJC. Typo corrected in Eq. (22

Two-loop QED corrections to the Altarelli-Parisi splitting functions

We compute the two-loop QED corrections to the Altarelli-Parisi (AP) splitting functions by using a deconstructive algorithmic Abelianization of the well-known NLO QCD corrections. We present explicit results for the full set of splitting kernels in a basis that includes the leptonic distribution functions that, starting from this order in the QED coupling, couple to the partonic densities. Finally, we perform a phenomenological analysis of the impact of these corrections in the splitting functions.Comment: 17 pages, 5 figures. Typos corrected, 1 figure added. Final version published in JHEP. Comment added about Eq. (51

Technological Capabilities Asymmetries in Latin American and the Caribbean

This paper analyzes the convergence process in Latin America and the Caribbean during the 1960-2005 period. The evidence is not favorable to clear convergence or divergence trends, but to a slight process of convergence until the 1970s, and then global divergence. In turn, the results suggest the existence of transitory clubs of convergence during the 1960-1974 and 1990-1994 periods. After that, the lower income economies showed convergence to the relative richer countries, but in a context of increasing dispersion of the per capita income. The development accounting and the decomposition of the total factor productivity (TFP) indicate that those results are mainly explained by relative differences in the technological capabilities, and that the existence of structural differences is a key factor to explain the nonconvergence in technological capabilities. The efforts to integrate the economies were not enough to reduce the gap but the divergence in technological capabilities would have been worst without the integration process.Convergence; Total Factor Productivity Decomposition; Technological Capabilities; Economic Integration; Latin American and the Caribbean

Формування компетентнісних якостей у майбутніх вчителів до вивчення основ цифрової техніки

(uk) У статті обґрунтована необхідність удосконалення змісту експериментального вивчення основ цифрової техніки майбутніми вчителями природничих дисциплін і трудового навчання. Наведені варіанти завдань і зразки матеріального забезпечення.(en) In the article the necessity of improvement of maintenance of experimental study of bases of digital technique is grounded by the future teachers of natural disciplines and labour teaching. The variants of tasks and standards of the material providing are resulted

Fundamental diagram of vibration-driven vehicles

In this study, we conducted experimental investigations into the fundamental diagram of vibration-driven vehicles (VDV) in a one-dimensional array. As these mechanical agents interact solely through collisions, their mean speed remains nearly constant at low and medium densities. However, there is a reduction of between 25% and 40% when the lineal density approaches the inverse of the contact distance. Remarkably, in this one-dimensional system, the outcome is significantly influenced by the order in which agents, sorted by their free speeds, are gradually introduced into the experiment. While a significant speed difference is observed at low and medium densities based on this ordering, both curves eventually converge to the same speed at maximum density. Moreover, the attained speed in saturated systems is slower than the speed of the slowest agent.Comment: 8 pages, 5 figure