Las peculiaridades del fordismo español.

Sin resume

Fast Numerical simulations of 2D turbulence using a dynamic model for Subgrid Motions

We present numerical simulation of 2D turbulent flow using a new model for the subgrid scales which are computed using a dynamic equation linking the subgrid scales with the resolved velocity. This equation is not postulated, but derived from the constitutive equations under the assumption that the non-linear interactions of subgrid scales between themselves are equivalent to a turbulent viscosity.The performances of our model are compared with Direct Numerical Simulations of decaying and forced turbulence. For a same resolution, numerical simulations using our model allow for a significant reduction of the computational time (of the order of 100 in the case we consider), and allow the achievement of significantly larger Reynolds number than the direct method.Comment: 35 pages, 9 figure

Policy, users and discourses: examples from bikeshare programs in (Kolkata) India and (Manila) Philippines

This paper examines two bikeshare programs implemented in two Global South cities, examining the role of users in promoting sustainable transport. To explore the sustainability of smart cycling, we argue that it is important to understand the prevailing administrative and socio-institutional practices within a given context. For the effective stabilisation of smart regimes, harmony between the administrative and socio-institutional practices must be established. In this context, we introduce a complementary approach to understanding transitions. Maintenance of political commitments and institutional support are crucial for cycling success, not incidental footloose initiatives. We explore two case studies in the context of the Global South, in the first one top-down policies and planning initiatives dictate the directions of transitions by enabling or constraining user routines. In the second one, citizens take control to resolve a transport deficit by initiating and driving a very bottom-up user-led transition narrative. We propose a framework to cater to the unique political, cultural and smart discourses of the Global South and the role of users in conjunction with the administrative and socio-institutional practices around them. Investigating both the bikeshare cases through the lens of this framework provides unique insights extending our knowledge beyond the built environment features of sustainable planning initiatives. Our findings reveal the complex narratives that are in play in developing nations and conclude that understanding and realising cycling transitions in southern megacities require a different approach compared to the Global North

Rethinking accessibility in planning of urban open space using an integrative theoretical framework

The State of Australian Cities (SOAC) national conferences have been held biennially since 2003 to support interdisciplinary policy-related urban research. This paper was presented at SOAC 6, held in Sydney from 26-29 November 2013. SOAC 6was the largest conference to date, with over 180 papers published in collected proceedings. All papers presented at the SOAC 2013 have been subject to a double blind refereeing process and have been reviewed by at least two referees. In particular, the review process assessed each paper in terms of its policy relevance and the contribution to the conceptual or empirical understanding of Australian cities

Sensitivity of the Mediterranean circulation to horizontal space-time–dependent tracer diffusivity field in a OGCM

The sensitivity of the Mediterranean circulation to the variability of the horizontal mixing is investigated using a Bryan-Cox–type general circulation model (OGCM). Attention is focused on a parameterisation of mixing previously developed in the context of two-dimensional turbulence, that is for the first time implemented in a OGCM. This parameterisation is suitable for velocity fields characterised by the presence of geostrophic coherent structures, and it is a direct application of the well-known Taylor’s dispersion relation. Theoretical and experimental justifications of the parameterisation are discussed and results from four numerical experiments, with different tracer mixing schemes, are presented. In particular, it is shown that the proposed diffusivity parameterisation improves the tracers transport due to large eddy dynamics and, ensuring a more correct salt budget in the North western part of the basin, contributes to maintain a realistic vertical stratification and winter deep convection in long climatic integrations

Ribosomal protein L35 is required for 27SB pre-rRNA processing in Saccharomyces cerevisiae

Ribosome synthesis involves the concomitance of pre-rRNA processing and ribosomal protein assembly. In eukaryotes, this is a complex process that requires the participation of specific sequences and structures within the pre-rRNAs, at least 200 trans-acting factors and the ribosomal proteins. There is little information on the function of individual 60S ribosomal proteins in ribosome synthesis. Herein, we have analysed the contribution of ribosomal protein L35 in ribosome biogenesis. In vivo depletion of L35 results in a deficit in 60S ribosomal subunits and the appearance of half-mer polysomes. Pulse-chase, northern hybridization and primer extension analyses show that processing of the 27SB to 7S pre-rRNAs is strongly delayed upon L35 depletion. Most likely as a consequence of this, release of pre-60S ribosomal particles from the nucleolus to the nucleoplasm is also blocked. Deletion of RPL35A leads to similar although less pronounced phenotypes. Moreover, we show that L35 assembles in the nucleolus and binds to early pre-60S ribosomal particles. Finally, flow cytometry analysis indicated that L35-depleted cells mildly delay the G1 phase of the cell cycle. We conclude that L35 assembly is a prerequisite for the efficient cleavage of the internal transcribed spacer 2 at site C(2)

Los católicos en el origen de Comisiones Obreras

Durante el período comprendido entre 1962 y 1967, en las zonas urbanas e industriales más importantes del país, las Comisiones Obreras emergieron a la superficie como un movimiento capaz de movilizar a decenas de miles de trabajadores. Si bien el núcleo orgánico del movimiento estaba configurado por una red relativamente pequeña de militantes, éstos a diferencia del pasado, habían conseguido romper el aislamiento de las protestas fabriles, una amplia coordinación territorial y sectorial e incorporar, con diferentes grados de lealtad, a trabajadores no adscritos a organización alguna de oposición al régimen y que, en muchos sentidos, eran nuevos