The rise and fall of a speculative bubble: geostrategic concerns,public debate and the promotion of an American trans-oceanic canal in the 1820s

The article examines the interest in the United States for the construction of a trans-oceanic canal in Central America. In 1820, William Davis Robinson published a book, Memoirs of the Mexican Revolution, which contained an appendix discussing the practicability of building a trans-oceanic canal including detailed analysis of the potential routes for its construction. The appendix sparked a lively debate among American political and economic leaders. This debate would not abate until the enormity of the financial and engineering realities of the project coupled with the continuing political instability of Mexico, Greater Colombia, and the Republic of Central America dampened investor enthusiasm.     

On the Reuse of Multiscale LiDAR Data to Investigate the Resilience in the Late Medieval Time: the Case Study of Basilicata in South of Italy

The Middle Ages have been traditionally considered a crisis period due to the demographic decrease and economic deterioration occurred in Western Europe. Nevertheless, the historical reconsideration has been focused not only on decline and decay, but also on resilience and recovery which characterized the Europe of the fourteenth and fifteenth centuries. So, today the main open question is as follows: how can we explain the diverse attitude (namely recovery versus decline) and the reasons why some settlements were more (or less) resilient than others? To provide a contribution to this issue, we focused on two medieval villages which are located very close to each other (in the Basilicata Region Southern Italy) and selected because they are characterized by diverse vicissitudes: Irsi abandoned in the fourteenth century and Montepeloso (still “existing” and renamed Irsina) where the population of Irsi moved to. To improve our current knowledge on Irsi, we reused and integrated multiscale LiDAR datasets in order to cope with the lack of documentary source. The use of LiDAR data enabled (i) the reconstruction of the potential urban fabric of Irsi, along with its temporal development and the transformation of the surrounding landscape, and (ii) the definition of a hypothesis about the causes of its desertification based on the inter-site analysis between Irsi and Montepeloso. The main results from the LiDAR-based analysis were as follows: (i) the diachronic reconstruction of the building phases of the village and (ii) the identification of a significant indicator obtained as the ratio between the amount of cultivatable land (close to the settlement area) and the population to characterize the resilience behavior in hilly landscape. This approach has been also successfully applied to another similar case study. Outputs from our analyses pointed out that LiDAR data can fruitfully improve medieval archaeological investigations and facilitate knowledge improvement from intra to- inter-site scale analyses and from local up to a landscape perspective.

     

Huerequeque: An inland outpost of the Initial Period Sechín Alto Polity in the Casma Valley of Peru

The Sechín Alto Polity effectively controlled the Casma Valley zone on the Peruvian north coast during the Initial Period (2100–1000 cal b.c.) through an inclusive administrative strategy whereby large inland centers and their component monumental architecture served specific, complementary functions within the polity. Smaller satellite sites established on the coast insured a supply of marine protein to the inland agricultural centers. The political strategy of the Sechín Alto Polity also included expansion inland to colonize the mid-sized site of Huerequeque at a key location in order to annex abundant agricultural land, to access a trade route to the highlands, and to extend and define the eastern Sechín Alto Polity boundary farther. Huerequeque is unique, however, because of its distinct cultural heritage, and excavations there have made it possible to examine the process through which the expanding polity established an administrative presence, imposed Sechín Alto Polity practices, and eventually abandoned the site. More broadly, elucidating this process is critical to a better understanding of the development and expansion of complex societies.     

A royal Maya country house: Archaeology at Bejucal,Guatemala

This article presents three years of archaeological investigations at the minor Maya center of Bejucal, Guatemala. A complete site history is presented relying on data from artifact analysis, architectural study, epigraphy, and bioarchaeology, with a goal towards identifying the site's function within the broader El Zotz polity. The authors argue that Bejucal underwent significant transformation following its establishment as a sacred hilltop site during the Late Preclassic period (400 b.c.–a.d. 250). The El Zotz royal family gradually appropriated the space, converting it into a royal country house and elite burial place. Bejucal's proximity to a large permanent water source suggests that the country house was situated within favorable hunting grounds. The research contributes to a broader discussion about the role of minor centers in regional settlement patterns, highlighting the benefit of textual data in making interpretations. The article also highlights the important role of salvage work in lowland Maya archaeology.     

Early Neolithic funerary diversity and mitochondrial variability of two Iberian sites

An analysis of the burial characteristics of the individuals recovered from two Early Neolithic sites in Navarre (Los Cascajos and Paternanbidea), in the Spanish Basque Country, revealed a complex funerary ritual. The individuals recovered from the Paternanbidea site were distributed in three double graves and a multiple one, while the individuals from Los Cascajos were buried in individual pit-shaped tombs; furthermore, the tombs had a variety of cultural and funerary features. The aim of this study is to evaluate the burial ritual by means of mitochondrial DNA data and the funerary characteristics of 36 individuals recovered from these two sites. The results show that the diversity of these Early Neolithic burial practices from the northern Iberian Peninsula cannot be explained by means of maternal kinship relationships.     

Reproducing Political Subjects: Feminist Scholarship and the Political Science Curriculum

In this article we analyse 16 politics textbooks that feature in introductory courses in politics, political theory or political thought taught in Australian universities. Our concern was to investigate how commonly used first-yearintroductory texts position feminist political theory (and its underlying scholarship) within political theory, and by extension within the discipline of political science. Our findings suggest that the scholarship of feminist theorists remains only occasionally visible to students of political science. It is mostly confined to the safety of managed enclaves, occasionally acknowledged, but certainly not integrated into what counts as the real knowledge of political theory.     

A Simplified Model to Evaluate the Dynamic Rocking Behavior of Irregular Free-Standing Rigid Bodies Calibrated with Experimental Shaking-Table Tests

A simplified model to evaluate the dynamic rocking behavior of free-standing irregular rigid bodies under earthquake-induced forces is proposed. The model analyzes the response of a three-dimensional irregular rigid body using a numerical approach that considers a critical section and two equivalent rectangular rigid blocks. Experimental shaking-table tests were carried out on modular prototypes, which allow the replication of representative mass distributions, sizes, and/or slenderness ratios for typical objects. The tests were used to calibrate the numerical model. It was found that the dynamic behavior under irregular conditions (asymmetrical shape and/or non-uniform mass distribution) can be estimated with the appropriate geometric and density considerations.     

The lower jaw and dentition of the traversodontid Exaeretodon riograndensis Abdala,Barberena & Dornelles,from the Brazilian Triassic (Santa Maria 2 Sequence,Hyperodapedon Assemblage Zone)

Exaeretodon riograndensis Abdala, Barberena, & Dornelles, 2002 Abdala, F., Barberena, M.C. and Dornelles, J.E.F. 2002. A new species of the traversodontid cynodont Exaeretodon from the Santa Maria Formation (Middle/Late Triassic) of Southern Brazil. Journal of Vertebrate Paleontology, 22: 313–325. [Taylor & Francis Online], [Web of Science ®] , [Google Scholar] is the most abundant traversodontid preserved in the basal Santa Maria 2 Sequence (Hyperodapedon Assemblage Zone), southern Brazil and is closely related to Exaeretodon argentinus Cabrera, 1943 Cabrera, A. 1943. El primer hallazgo de terápsidos en la Argentina. Notas del Museo de La Plata, Paleontología, 8: 317–331.  [Google Scholar] from the Ischigualasto Formation, Argentina. Previous anatomical studies of E. riograndensis have focused mainly on cranial material and little is known about the morphology of its lower dentition or postdentary bones. We describe the first fairly complete postdentary series of the mandible of E. riograndensis and provide additional information on its lower dentition. The postdentary bones of E. riograndensis include a complex coronoid, an angular with a delicate reflected lamina and a stout retroarticular process of the articular, contrasting with the morphology reconstructed for Argentinean specimens, which possess a small retroarticular process. Apart from that, the postdentary bones do not differ significantly from those known for E. argentinus, a fact expected due to the great similarity between other skeletal features of these species. Furthermore, the lower postcanines of E. riograndensis have virtually the same structure as those of E. argentinus, with an approximate quadrangular shape in occlusal view. Moreover, the transverse cusp row is placed anteriorly and comprises a lingual and a buccal cusp, and the occlusal basin delimited by the four main cusps is relatively deep. The new material does not add any taxonomically diagnostic features to E. riograndensis. However, the fossils greatly improve our understanding of the anatomy of the Brazilian species.     

Influence of Frequency Content and Peak Intensities in the Rocking Seismic Response of Rigid Bodies

The rocking response of a family of bodies given by its width and height due to synthetic and recorded strong ground motions is presented; this allow us to identify the main parameters that govern their response: peak acceleration and velocity, dominant frequency, and acceleration time-history. Recorded strong ground motions were scaled to the same peak acceleration and also to the same peak velocity to analyze the effect of both parameters in the response of rigid bodies. These three parameters were used to build an equation to obtain the height/width overturning plots. The proposed equation was tested for many well-known strong ground motions and the results were compared to other methods shown to be more accurate. This parametric equation does not need iterations or numerical approximations to be solved and can provide engineers, in a very practical way, minimum design requirements or particular specifications to protect non structural elements.