Assessment and Significance of a World War II battle site: recording the USS Emmons using a High‐Resolution DEM combining Multibeam Bathymetry and SfM Photogrammetry

The USS Emmons, a 106m US Navy Gleaves‐class destroyer minesweeper that sank in 40m of water off Okinawa Island, Japan after kamikaze attack in 1945, is used as a case study for examining the history, multivocal significance, and heritage management of a World War II naval battle site. A baseline record of the site was made using an innovative method incorporating precise control points obtained from high‐resolution multibeam echosounding bathymetry to generate 3D models using structure‐from‐motion photogrammetry. The 3D models produced can be used for sharing information about this underwater cultural heritage and for future in situ monitoring of the archaeological remains.     

Restoration of paintings on domes with non-developable geometry (Los Santos Juanes Church in Valencia)

The restoration of paintings on elements in cultural heritage buildings (fundamentally, churches) involves two structural problems: capturing the geometry of the construction element and its development. In many cases, the geometries are regular (e.g., cylinders, spheres, elliptical domes). However, there are cases in which the elements cannot be adapted to any known geometry, much less one that can be mathematically developed. The development of surfaces becomes essential for the restoration of paintings over “flat elements” (over which work is performed on the ground) that are subsequently transferred to the real surface (ceilings). The mathematical transformations that allow regular geometries to be developed are widely known (cartographic projections). However, when the geometry is irregular, there is no development. This study presents a new methodology based on differential rectification and its application for the development of oculi in the Los Santos Juanes Church (Valencia), whose geometry is completely irregular both in shape and as a result of construction defects (and damage caused by fire). The present study focuses on the restoration of paintings damaged by fire.     

The Emergence of a Story Space

For centuries, the Club War, a popular uprising on Finnish territory in the 1590s, constituted a minor side story in Swedish royal historiography. After the Napoleonic Wars, it was quickly appropriated as one of the most canonical historical events in the emerging Finnish national history. This article argues that, in order to understand the role of the Club War in early 19th-century Finnish historical culture, it is necessary to trace its interpretive tradition backwards in time, across established borders of national historiographies, in a thematic, transtemporal, and comparative framework. The paper will discuss eight pieces of Swedish and Finnish history writing from 1620 to 1860, focusing on the storylines, attributes attached to the protagonists, and historical agency allocated to different social groups against a backdrop of sources available within each context of writing, in order to pinpoint and analyse moments when the story space of the event altered. The article will demonstrate that textual traditions of regions that formerly belonged to multi-ethnic or conglomerate states provide particularly interesting material for transtemporal historiography. Through this case study, the article also argues that Swedish and Finnish historiography of the early 19th century should be studied as one, entangled, textual culture.     

从“良渚全考古”到“良博全展示”——以良渚博物院2018年改陈策展为例

良渚考古工作历经八十余年,考古内涵不断丰富,考古价值不断提升,已进入到"良渚全考古"时代,是边发现、边研究、边保护、边利用、边传承的模式。2018年良渚博物院改陈,进入"良博全展示"阶段。现有的展览全面展示良渚考古成果,全面呈现良渚文化内涵,全面阐释良渚文明价值,全面解读良渚遗存信息。良渚的展示除了依靠文物本身或图文所呈现和传递的信息,还采用过程性展示、功能性展示、复原性展示、对比性展示、演变性展示、场景性展示等多种手段,多角度、全方位地解读和展示遗物,力图将良渚文物的故事讲清楚、讲明白。     

A journey to Mars: John Dewey’s lectures and inquiry in China

ABSTRACT

Instead of the framework of influence–acceptance commonly used in previous studies, the author uses new sources to reexamine John Dewey’s visit to China from the perspective of interactive experience. This study presents Dewey’s lectures in China as the result of interrelationships among a variety of elements – Columbia University, different hosts and audiences, the media, all levels of the Chinese government, the domestic situation in the United States, the international situation, and Dewey’s expectations and work – against the general background of China’s New Culture Movement and new educational reforms. Dewey’s speeches on democracy, science, and new education were remarkably successful in the first year of his visit to China, but began to meet with resistance from some students beginning in June 1920. Because of the Red Scare in the United States, Dewey had to stay in China. In the second year of his visit, he gave warmly welcomed lectures on the same topics in Jiangxi, Fujian, and Guangdong Provinces. With a deeper understanding of China, Dewey not only identified himself with reform plans but also began to pay more attention to China’s economic problems. His inquiry into the problems confronting China is a good example of what he advocated in his lectures: seeing democracy, science, and new education as a way of thinking and carrying out actions and making intellectual choices while moving forward.     

Experimental investigation of carbon dioxide trapping due to capillary retention in saline aquifers

Capillary trapping is a physical mechanism by which carbon dioxide (CO₂) is naturally immobilized in the pore spaces of aquifer rocks during geologic carbon sequestration operations, and thus a key aspect of estimating geologic storage potential. Here, we studied capillary trapping of supercritical carbon dioxide (scCO₂), and the effect of initial scCO₂ saturation and flow rate on the storage/trapping potential of Berea sandstone. We performed two‐phase, scCO₂‐brine displacements in two samples, each subject to four sequential drainage–imbibition core‐flooding cycles to quantify end‐point saturations of scCO₂ with the aid of micro‐ and macro‐computed tomography imaging. From these experiments, we found that between 51% and 75% of the initial CO₂ injected can be left behind after the brine injection. We also observed that the initial scCO₂ saturation influenced the residual scCO₂ saturation to a greater extent than the rate of brine injection under the experimental conditions examined. In spite of differences in the experimental conditions tested, as well as those reported in the literature, initial and residual saturations were found to follow a consistent relationship.     

Smoking bans for private vehicles: children's rights and children's voices

Smoking bans have recently expanded to private vehicles in which children are present. This study considers the place of children's rights and children's voices in this policy initiative, with respect to the Canadian context, where vehicular smoking bans have been widely adopted. First, we examine print media reports, finding children's right to health was acknowledged less frequently than an array of competing adult rights. Children's voices were largely absent from the record. Second, we report on focus groups involving 23 young people in Edmonton, Alberta, highlighting participants' strong support for bans, based on their knowledge of health harms, aversion to smoke, and awareness that children have limited ability to contest adult authority in vehicles. We conclude that vehicular smoking bans may address the situation whereby children are forced to share an unhealthy environment, in breach of their rights.     

Low‐temperature catalytic CO2 hydrogenation with geological quantities of ruthenium: a possible abiotic CH4 source in chromitite‐rich serpentinized rocks

Metal‐catalysed CO₂ hydrogenation is considered a source of methane in serpentinized (hydrated) igneous rocks and a fundamental abiotic process germane to the origin of life. Iron, nickel, chromium and cobalt are the catalysts typically employed in hydrothermal simulation experiments to obtain methane at temperatures >200°C. However, land‐based present‐day serpentinization and abiotic gas apparently develop below 100°C, down to approximately 40–50°C. Here, we document considerable methane production in thirteen CO₂ hydrogenation experiments performed in a closed dry system, from 20 to 90°C and atmospheric pressure, over 0.9–122 days, using concentrations of non‐pretreated ruthenium equivalent to those occurring in chromitites in ophiolites or igneous complexes (from 0.4 to 76 mg of Ru, equivalent to the amount occurring approximately in 0.4–760 kg of chromitite). Methane production increased with time and temperature, reaching approximately 87 mg CH₄ per gram of Ru after 30 days (2.9 mgCH₄/g_ru/day) at 90°C. At room temperature, CH₄ production rate was approximately three orders of magnitude lower (0.003 mgCH₄/g_ru/day). We report the first stable carbon and hydrogen isotope ratios of abiotic CH₄ generated below 100°C. Using initial δ¹³C_CO2 of ‐40‰, we obtained room temperature δ¹³C_CH4 values as ¹³C depleted as ?142‰. With time and temperature, the C‐isotope separation between CO₂ and CH₄ decreased significantly and the final δ¹³C_CH4 values approached that of initial δ¹³C_CO2. The presence of minor amounts of C₂‐C₆ hydrocarbons is consistent with observations in natural settings. Comparative experiments at the same temperatures with iron and nichel catalysts did not generate CH₄. Ru‐enriched chromitites could potentially generate methane at low temperatures on Earth and on other planets.     

Contesting the Divided City: Arts of Resistance in Skopje

This paper examines issues of power and resistance in “divided cities”. Basing my analysis on fieldwork I carried out in Skopje, Macedonia, I look at how urban space may be constructed and used by hegemonic groups as a means of asserting their power and how, in turn, the city may be a place of resistance where power is contested and public space reappropriated. Drawing on Lefebvre's perspective on the production of space, I compare the conceived city to the lived city and examine how urban inhabitants may resist the division of the city and challenge hegemonic representations. I also draw on Debord's psychogeography to define an artistic, active and participatory approach to urban space through which the inhabitants may re‐conquer their right to the œuvre and to the city. I argue that the city as a lived environment may offer narratives other than division and that there are alternatives to the divided city.     

Salafī‐Ashʻarī Polemics of the 3rd & 4th Islamic Centuries

While Sunnism is the largest sect of Islam, Sunnism itself is divided into many strands. The two main strands of Sunnism for the last few centuries are the Atharī (or Salafī) strand, and the Ash?arī strand. This papers seeks to examine the earliest recorded controversies that signal this intra‐Sunnī divide. While each of these two groups has historically attempted to claim true Sunnī ‘orthodoxy’ by denying the legitimacy, and at times even the early existence, of the other, it will be shown that the genesis of this intra‐Sunnī divide dates back to the first century of Sunnism itself, viz., the 3^rd AH/8^th CE centuries, and that there are specific historic incidents that indicate theological tensions within the nascent Sunnī movement that would later be manifested in the two streams of Ash?arism and Salafism. Hence, it can be argued that Sunnism was never truly unified to begin with, and that these incidents demonstrate theological tensions that existed from its very origins.