Exhumation and incision history of the Torngat Mountains, northern Labrador and Quebec, Canada, using apatite (U-Th)/He thermochronology

M.S. University of Kansas, Geology 2005Apatite (U-Th)/He thermochronological data provide new insights into the exhumation history of the Torngat Mountains, which are located in Ungava Peninsula, northern Labrador and Quebec, Canada. Latest Jurassic to earliest Cretaceous rifting resulted in crustal extension and opening of the Labrador Sea, causing westward tilting and exhumation of the Labrador continental margin. Post-rift erosion and incision led to the formation of significant topographic relief in the Torngat Mountains. Thermal modeling of apatite (U-Th)/He thermochronological data from a vertical sample transect indicates that rapid cooling starting at ~140-150 Ma, which closely coincides in age with independent geological evidence for initial rifting in the area. Apatite (U-Th)/He ages along an E-W transect, which was collected perpendicular to the Torngat Mountains and the Labrador coast, record differential extensional and erosional exhumation diminishing westwards towards the interior of Ungava Peninsula. Ages near the Labrador coastline are as young as ~ 78 Ma and are significantly younger than the timing of onset of initial rifting (~140-150 Ma); this suggests significant amounts (~1-2 km) of post-rift erosion and incision along the eastern continental margin of the Labrador Sea. West of the Torngat Mountains, along the E-W transect, apatite (U-Th)/He ages also show evidence of substantial post-rift erosion likely related to Mesozoic and Tertiary fluvial erosion or to Pleistocene continental glaciation. Two constant-elevation N-S transects collected parallel to the Labrador coast show apatite (U-Th)/He ages that mimic the larger scale topographic features of the area, such as major rivers and fiords, indicating a deflection of shallow crustal isotherms due to post-rift development of highamplitude topography. Additional numerical modeling is required to refine the timing and spatial magnitude of post-rift erosion in more detail

Archive pictures and political context in the Japanese New Wave

La dénommée nouvelle vague Japonaise, comme la nouvelle vague Française et d"autres « cinémas nationaux », a contribué à exercer le renouvellement du langage cinématographique dans les années soixante et soixante-dix. Cependant, le cas japonais est spécialement intéressant parce qu"il sera parfois simultané à ses homologues européens et parfois pionner dans le développement de pratiques avantgardistes. L'une des techniques à la fois provocatrice et inquiétante est précisément l'utilisation d'images d"archive dans ces films de fiction. Images sur les manifestations étudiantes prises par des réalisateurs politiquement engagés avec la Nouvelle Gauche Japonaise. Ce texte essaiera de déchiffrer la mystérieuse fonction de ces images liant au le contexte politique. La tâche se révèle difficile puisque ces pièces cinématographiques apparaissent dans le film sans être intégrées, en apparence au moins, au reste de la structure narrative

Small and strong formulations for unions of convex sets from the Cayley embedding

There is often a significant trade-off between formulation strength and size in mixed integer programming (MIP). When modelling convex disjunctive constraints (e.g. unions of convex sets) this trade-off can be resolved by adding auxiliary continuous variables. However, adding these variables can result in a deterioration of the computational effectiveness of the formulation. For this reason, there has been considerable interest in constructing strong formulations that do not use continuous auxiliary variables. We introduce a technique to construct formulations without these detrimental continuous auxiliary variables. To develop this technique we introduce a natural nonpolyhedral generalization of the Cayley embedding of a family of polytopes and show it inherits many geometric properties of the original embedding. We then show how the associated formulation technique can be used to construct small and strong formulation for a wide range of disjunctive constraints. In particular, we show it can recover and generalize all known strong formulations without continuous auxiliary variables.National Science Foundation (U.S.) (grant CMMI-1351619

Views of Modern and Postmodern Tokyo: dehumanization, urban, social and body changes

The urban space of Tokyo is a recurrent landscape used by many filmmakers throughout history to show various changes in Japanese society. The purpose of this diachronic film analysis is to extrapolate a sociological view of Tokyo in the frame of Modernity and the new concept of Postmodernity, the redefinition of the historical period beginning in the late 1970s

Embedding Formulations and Complexity for Unions of Polyhedra

It is well known that selecting a good Mixed Integer Programming (MIP) formulation is crucial for an effective solution with state-of-the art solvers. While best practices and guidelines for constructing good formulations abound, there is rarely a systematic construction leading to the best possible formulation. We introduce embedding formulations and complexity as a new MIP formulation paradigm for systematically constructing formulations for disjunctive constraints that are optimal with respect to size. More specifically, they yield the smallest possible ideal formulation (i.e. one whose LP relaxation has integral extreme points) among all formulations that only use 0-1 auxiliary variables. We use the paradigm to characterize optimal formulations for SOS2 constraints and certain piecewise linear functions of two variables. We also show that the resulting formulations can provide a significant computational advantage over all known formulations for piecewise linear functions.United States. National Science Foundation. (Grant CMMI-13516

Reediting the war in Asia: Japanese newsreels in Spain (1931-1945)

During the fifteen-year conflict in Asia (1931-1945), the Japanese industry of newsreels experienced ad extraordinary growth, prompted by the incidents in China in the thirties and by the propaganda needs particularly from 1940, when all news films were fused in Nippon News. The images on Asia seen in Spanish cinemas had been originated in the Japanese newsreels, at least until the last stage of the Pacific War. To a great extent, they reached Spain as versions of Nazi Germany’s newsreel Auslandstonwoche, but there were also other sources. This article seeks to cast light on the impact that the Japanese newsreel industry had on Spain, tracing how these images circulated and determine how they conditioned the local reception of the events in Asia

Incremental and encoding formulations for Mixed Integer Programming

The standard way to represent a choice between n alternatives in Mixed Integer Programming is through n binary variables that add up to one. Unfortunately, this approach commonly leads to unbalanced branch-and-bound trees and diminished solver performance. In this paper, we present an encoding formulation framework that encompasses and expands existing approaches to mitigate this behavior. Through this framework, we generalize the incremental formulation for piecewise linear functions to any finite union of polyhedra with identical recession cones

Theorising transnational Japanese film and media

The present publication is the result of a collaborative project originally entitled “Japanese Transnational Cinema” whose aim was bringing together well established scholars as well as young researchers working on innovative approaches to Japanese cinema. The aim of this book is proposing new analytical methodologies and theoretical frameworks seeking to discuss the transnational complexities of film and media culture related to Japan, and challenge the old ‘national’ paradigm of by highlighting the limitations of studying film and media as a phenomenon confined to its national borders. The project was led in partnership between Birkbeck, University of London and Waseda University in collaboration with colleagues from other British and Japanese universities. Partial results of our research were published as an special issue (Centeno Martín and Morita, 2019) and presented in several international meetings, a two-day seminar held at Birkbeck in May 2019 whose second part took place few months later, a two-day symposium at Waseda, Tokyo, in July 2019. This European-Japanese exchange was possible thanks to the generous financial support from Waseda University, Daiwa Anglo-Japanese Foundation, Great Britain Sasakawa Foundation, Birkbeck School of Arts and Nagoya University which allowed Japanese scholars to attend the event in London and UK-based scholars to present in Tokyo

I bet you don’t look good on the dance floor: Re-examining the innovation policy dance metaphor in the case of Colombia

Innovation heuristics offer guidance on how to navigate through the complex dynamics of innovation governance. However, further discussion is needed on the premises of such analytical tools to inquire on their implications on innovation policy and practice. This paper builds on the innovation policy dance metaphor to better grasp the ever-changing interplays (or dance) between innovation practice (I), policy (P) and theory (T). We critically assess the basic underlying assumptions of this metaphor, by examining the extent to which its heuristic pretensions are relevant in the Latin American context. To do so, we explore three illustrative cases in Colombia, shedding light on some crosscutting opportunities and gaps for the dancing metaphor across different innovation I-P-T situations. Some derived lessons suggest that dancing occurs within and/or between different governance levels, where variables such as politics shape the innovation I-P-T interplay and time defines first and second order learning pathways