3D electrical prospection in the archaeological site of El Pahñú, Hidalgo State,Central Mexico

The implementation of a 3D Electrical Resistivity Tomography (ERT-3D) survey was carried out in El Pahñú archaeological site, Hidalgo State, Central Mexico. A combination of a new ERT arrays allowed studying the subsoil beneath the Main Pyramid built near the edge of a plateau, along with another important structure (the Tecpan), which was a smaller structure that lodged the governmental council in pre-Hispanic times. The recorded information was acquired through the combination of several electrodic designs: L-Corner (LC), Equatorial (Eq), and Minimum Coupling (MC). For the Main Pyramid, the electrodes were set up around the perimeter of the structure, since they were not permitted to be inserted over the edifice, thus preventing damages to the architectonic elements. The second structure allowed inserting electrodes on selected spots within the architectonic space. The combination of the different arrays made possible the acquisition of 1204 apparent resistivities beneath the Main Pyramid and 2460 resistivity data beneath the Tecpan. The apparent resistivity data were inverted to obtain a three dimensional display of the subsoil electrical resistivity beneath the archaeological structure. The interpreted resistivity model under the Main Pyramid displayed a highly resistive structure towards its northern face that could be associated with infill. Such material was employed by the ancient constructors to level the terrain close to the edge of the cliff. Another interesting anomaly was found towards the central portion of the structure that could be associated to a foundation offer. The interpretation of data beneath the Tecpan identified the structural foundations and other interesting anomalies related to the different occupational times. The investigation supported the archaeological investigation of the site, suggesting areas of potential geological risk and of archaeological interest. For example, the Main Pyramid presents serious stability problems, indicating that the infill has weakened, producing cracks threatening long-term pyramid integrity.     

The Double Legacy of Bernalism in Science Diplomacy

Recent debates in the history of science aimed at reconstructing the history of scientific diplomacy have privileged the analysis of forms of diplomacy coming from above. Instead, the objective of this paper is to raise awareness of these debates by looking at attempts at scientific diplomacy from below. Such a shift in perspective might allow us to observe the impact of marginalized social agents on the construction of international diplomatic choices. This article particularly focuses attention on how the legacy of Bernalism has fostered the emergence of two different types of science diplomacy. On the one hand, Bernalism has influenced the goals of organizations such as UNESCO and the World Peace Council, which are forms of science diplomacy I would term from above. On the other hand, Bernalism has also been at the origin of radical scientific movements that I propose to interpret as forms of scientific diplomacy from below. These have, in fact, played a cardinal role not only in raising public awareness of the social and political roles of science, but also in the more direct participation of scientists in defining the political objectives of their research activity. From this point of view, I analyze how an association like the World Federation of Scientific Workers proposed (at least in the beginning) greater democratic participation than the top-down structures of other forms of scientific internationalism.     

The “Blind” State: Government Quest for Formalization and Conflict with Small‐Scale Miners in the Peruvian Amazon

The Peruvian government is attempting to implement a formalization plan to deal with the chaotic expansion of small‐scale mining activities in the Amazon. However, this plan has been contested, delayed and halted by local miners. Why exactly has it been so hard for the government to enforce a formalization plan in Madre de Dios? This article aims to answer this question by analysing both government efforts to establish control over the region and the challenges it faces in enforcing its formalization plan. It is argued that current resistance to and conflict over the formalization process in Madre de Dios reveals a state governance problem due to the region having been historically governed as a zone for exploitation rather than for social and economic development. Similarly, the analysis highlights the absence of major corporations through which the state can establish a basis for governance, as in other parts of the country.     

Experimental Investigation of Exterior Unreinforced Beam-Column Joints with Plain and Deformed Bars

Experimental tests on four full-scale exterior unreinforced reinforced concrete (RC) beam-column joints, representative of the existing non-conforming RC frame buildings, are carried out. The specimens have different longitudinal reinforcements (plain or deformed) and they are designed in order to be representative of two typical design practices (for gravity loads only or according to an obsolete seismic code). Different failure modes are observed, namely joint failure with or without beam yielding. The local response of the joint panel is analyzed. The different joint deformation mechanisms and their contribution to the deformability and to the energy dissipation capacity of the sub-assemblages are evaluated.     

The Sandinista revolution and the limits of the Cold War in Latin America: the dilemma of non-intervention during the Nicaraguan crisis, 1977–78

This paper seeks to understand the construction of a broad alliance between the Sandinista National Liberation Front (FSLN), a socialist inspired guerrilla group, and various Latin American liberal and authoritarian governments, mainly Venezuela, Costa Rica, Panama and Cuba, between 1977 and 1979. I will seek to understand the construction of this unusual partnership, as well as the deep conflicts and mistrust that existed between the parties during the revolutionary upheaval in Nicaragua. This process will be examined by analysing the way Cold War politics and Latin American regional tensions shaped the events leading to the Sandinista revolution.     

Rock Stars and Bad Apples: Moral Economies of Alternative Food Networks and Precarious Farm Work Regimes

Alternative food networks face both challenges and opportunities in rethinking the role of precarious employment in food system transformation. We explore how alternative food networks in British Columbia, Canada have engaged with flexible and precarious work regimes for farmworkers, including both temporary migrant workers and un(der)paid agricultural interns. Based on in‐depth interviews, participant observation and document analysis, we find that alternative food actors often normalize a precarious work regime using a moral economy frame. This framing describes precarious farm employment as either a necessary challenge in the transition to sustainability, or merely involving a few individual “bad apple” farmers. Further, this framing involves an aversion to “one‐size‐fits‐all” regulation by the state in favor of consumer‐driven regulation of labor standards. Our analysis suggests that a moral economy framing can obscure systemic inequities in precarious farm employment and dampen the impetus for structural change through collective food movement organizing.     

‘A Most Manly and Amusing Game’: Australian Football and the Frontier Wars

Formed in the 1850s frontier contact zone, Australian Football owes more to the experiences of the skirmishes between white settlers and Indigenous Australians than is usually recognised. If we reassess the historical sources from a Deleuzo-Guattarian perspective, we observe that the ‘Game of Our Own’ is a mix of British and Indigenous styles of warfare. The four men who drafted the rules of this new ‘most manly and amusing game’ were misfits from British society who were seeking new lives on the frontier. Their code contained ‘striating’ features played across ‘smooth’ spaces. The football teams adopted totemic plants and animals in their nomenclature; the players were bedizened in costumes that spoke of Empire; the bloody Frontier Wars were in living memory of the players and their ‘barrackers’.     

Earliest hunters and gatherers of South America

Traditional syntheses of the archaeology of the late Pleistocene period in South America have focused primarily on the peopling of the continent by North American cultural groups and on identifying associations among regional sites. This focus has tended to ignore the widespread culture diversity of the period and the possible effects of different paleolandscapes on human migration and colonization, such as the presence of unglaciated tropical and temperate environments in the northern lowlands, the gateway to the interior. The earliest known cultural assemblages are characterized by various unifacial and bifacial lithic industries that may represent regional processes reminiscent of an Archaic lifeway. The major archaeological sites and associated artifact assemblages are examined in terms of regional and continental patterns of environmental and cultural change. Results suggest that the Pleistocene archaeological record of South America must be explained in its own terms and that the events and processes producing this record either occurred earlier than previously thought or are very different from those in North America.     

Defining and Contesting Environmental Justice: Socio-natures and the Politics of Scale in the Delta

Abstract:  This article examines a contemporary process intended to "identify a strategy for managing the Sacramento–San Joaquin Delta as a sustainable ecosystem that would continue to support environmental and economic functions that are critical to the people of California" ( Delta Vision 2008 , http://deltavision.ca.gov/AboutDeltaVision.shtml ). Environmental injustices in the Delta are exacerbated by connected conflicts between knowledge and power, over the scale at which "environmental justice" and the "Delta" are understood through public policy. The rejection of environmental justice and the socio-natural in the Delta Vision process represents how contemporary policy processes are recreating and reenacting the power/knowledge dynamics that have defined the Delta, placed it on a path to ecological collapse and injected high levels of social and racial injustice in its landscape over the past 150 years. Our article combines an ethnographic and a historical geographical approach that contributes to the literature on environmental justice and scale and links with the literature on water governance and power to advance the task of defining environmental justice from the academic and policy perspectives.     

Mining Formalization at the Margins of the State: Small‐scale Miners and State Governance in the Peruvian Amazon

This article analyses the Peruvian government's quest to formalize small‐scale mining in the Amazon as a political process which shows how state governance problems are reproduced in the margins of the state. It asks why the central state is unable to govern mining activities in the Madre de Dios region, and examines how small‐scale miners have reacted to state attempts to formalize their activities. The author argues that, through political agency and the reproduction of ‘hybrid’ formal and informal institutions, small‐scale miners have learned to contest, reinterpret and build alternatives to central state governance. The article contributes to the literature on development policies by showing how difficulties in implementing regulatory policies may be analysed as governance problems, particularly in regions like the Amazon, where the state apparatus is not well established.