702 research outputs found
How to Record Current Events like an Archaeologist
This article shows how to record current events from an archaeological perspective. With a case study from the COVID-19 pandemic in Norway, we provide accessible tools to document broad spatial and behavioral patterns through material culture as they emerge. Stressing the importance of ethical engagement with contemporary subjects, we adapt archaeological field methodsâincluding geolocation, photography, and three-dimensional modelingâto analyze the changing relationships between materiality and human sociality through the crisis. Integrating data from four contributors, we suggest that this workflow may engage broader publics as anthropological data collectors to describe unexpected social phenomena. Contemporary archaeological perspectives, deployed in rapid response, provide alternative readings on the development of current events. In the presented case, we suggest that local ways of coping with the pandemic may be overshadowed by the materiality of large-scale corporate and state response
How to Record Current Events like an Archaeologist
This article shows how to record current events from an archaeological perspective. With a case study from the COVID-19 pandemic in Norway, we provide accessible tools to document broad spatial and behavioral patterns through material culture as they emerge. Stressing the importance of ethical engagement with contemporary subjects, we adapt archaeological field methodsâincluding geolocation, photography, and three-dimensional modelingâto analyze the changing relationships between materiality and human sociality through the crisis. Integrating data from four contributors, we suggest that this workflow may engage broader publics as anthropological data collectors to describe unexpected social phenomena. Contemporary archaeological perspectives, deployed in rapid response, provide alternative readings on the development of current events. In the presented case, we suggest that local ways of coping with the pandemic may be overshadowed by the materiality of large-scale corporate and state response
A contemporary archaeology of pandemic
Global crises drastically alter human behavior, rapidly impacting patterns of movement and consumption. A rapid-response analysis of material culture brings new perspective to disasters as they unfold. We present a case study of the coronavirus pandemic in TromsĂž, Norway, based on fieldwork from March 2020 to April 2021. Using a methodology rooted in social distancing and through systematic, diachronic, and spatial analysis of trash (e.g., discarded gloves, sanitization products), signage, and barriers, we show how material perspectives improve understanding of relationships between public action and government policy (in this case examined in relation to the Norwegian concept of collective labor, dugnad). We demonstrate that the materiality of individual, small-scale innovations and behaviors that typified the pandemic will have the lowest long-term visibility, as they are increasingly replaced or outnumbered by more durable representations generated by centralized state and corporate bodies that suggest close affinity between state directive and local action. We reflect on how the differential durability of material responses to COVID-19 will shape future memories of the crisis
The Digital Revolution to Come: Photogrammetry in Archaeological Practice
The three-dimensional (3D) revolution promised to transform archaeological practice. Of the technologies that contribute to the proliferation of 3D data, photogrammetry facilitates the rapid and inexpensive digitization of complex subjects in both field and lab settings. It finds additional use as a tool for public outreach, where it engages audiences ranging from source communities to artifact collectors. But what has photogrammetryâs function been in advancing archaeological analysis? Drawing on our previous work, we review recent applications to understand the role of photogrammetry for contemporary archaeologists. Although photogrammetry is widely used as a visual aid, its analytical potential remains underdeveloped. Considering various scales of inquiryâgraduating from objects to landscapesâwe address how the technology fits within and expands existing documentation and data visualization routines, while evaluating the opportunity it presents for addressing archaeological questions and problems in innovative ways. We advance an agenda advocating that archaeologists move from proof-of concept papers toward greater integration of photogrammetry with research
Small collections remembered: SĂĄmi material culture and community-based digitization at the Smithsonian Institution
Of the 158âmillion things housed by the Smithsonian Institution, about 56 objects originate from SĂĄmi communities. By all accounts a small group of objectsâeven by the standards of the Arctic collections at the Institutionâit may be easily overlooked or dismissed as insignificant, based on entrenched ideologies about idealized collections. Presenting a community-based methodology for the engagement of distant museum collections using three-dimensional technologies, this article establishes the latent potential of small collections for Indigenous communities. We demonstrate how a group of 56 objects not only chronicles complex histories of exchange and colonialism, but also provides a manageable conduit for learning and exchange to facilitate the continued restructuring of relationships between museums and descendent stakeholders, from the individual to community level. Small collections, far from incomplete, may not only contain materials significant to descendent groups on their own terms, but provide the grounds to generate new forms of Indigenous initiated, balanced reciprocity
Functional properties of in vitro excitatory cortical neurons derived from human pluripotent stem cells
The in vitro derivation of regionally defined human neuron types from patientâderived stem cells is now established as a resource to investigate human development and disease. Characterization of such neurons initially focused on the expression of developmentally regulated transcription factors and neural markers, in conjunction with the development of protocols to direct and chart the fate of differentiated neurons. However, crucial to the understanding and exploitation of this technology is to determine the degree to which neurons recapitulate the key functional features exhibited by their native counterparts, essential for determining their usefulness in modelling human physiology and disease in vitro. Here, we review the emerging data concerning functional properties of human pluripotent stem cellâderived excitatory cortical neurons, in the context of both maturation and regional specificity. [Image: see text
The Effectiveness of Embedded Values Analysis Modules in Computer Science Education: An Empirical Study
Embedding ethics modules within computer science courses has become a popular
response to the growing recognition that CS programs need to better equip their
students to navigate the ethical dimensions of computing technologies like AI,
machine learning, and big data analytics. However, the popularity of this
approach has outpaced the evidence of its positive outcomes. To help close that
gap, this empirical study reports positive results from Northeastern's program
that embeds values analysis modules into CS courses. The resulting data suggest
that such modules have a positive effect on students' moral attitudes and that
students leave the modules believing they are more prepared to navigate the
ethical dimensions they will likely face in their eventual careers.
Importantly, these gains were accomplished at an institution without a
philosophy doctoral program, suggesting this strategy can be effectively
employed by a wider range of institutions than many have thought
Introducing platform surface interior angle (PSIA) and its role in flake formation, size and shape
Four ways archaeologists have tried to gain insights into how flintknapping creates lithic variability are fracture mechanics, controlled experimentation, replication and attribute studies of lithic assemblages. Fracture mechanics has the advantage of drawing more directly on first principles derived from physics and material sciences, but its relevance to controlled experimentation, replication and lithic studies more generally has been limited. Controlled experiments have the advantage of being able to isolate and quantify the contribution of individual variables to knapping outcomes, and the results of these experiments have provided models of flake formation that when applied to the archaeological record of flintknapping have provided insights into past behavior. Here we develop a linkage between fracture mechanics and the results of previous controlled experiments to increase their combined explanatory and predictive power. We do this by documenting the influence of Herztian cone formation, a constant in fracture mechanics, on flake platforms. We find that the platform width is a function of the Hertzian cone constant angle and the geometry of the platform edge. This finding strengthens the foundation of one of the more influential models emerging from the controlled experiments. With additional work, this should make it possible to merge more of the experimental results into a more comprehensive model of flake formation
Effects of reproductive period duration and number of pregnancies on midlife ECG indices: a secondary analysis from the Women\u27s Health Initiative Clinical Trial
OBJECTIVES: Pregnancy, menses and menopause are related to fluctuations in endogenous sex hormones in women, which cumulatively may alter cardiac electrical conduction. Therefore, we sought to study the association between number of pregnancies and reproductive period duration (RD, time from menarche to menopause) with ECG intervals in the Women\u27s Health Initiative Clinical Trials.
DESIGN: Secondary analysis of multicentre clinical trial.
SETTING: USA.
PRIMARY OUTCOME MEASURES: ECGintervals: PR interval, P-wave duration, P-wave dispersion, QTc interval.
PARTICIPANTS: n=40 687 women (mean age=62 years) participating in the Women\u27s Health Initiative Clinical Trials. 82.5% were white, 9.3% black, 4% Hispanic and 2.7% Asian.
METHODS: In primary analysis, we employed multivariable linear regression models relating number of pregnancies and RD with millisecond changes in intervals from enrolment ECG. We studied effect modification by hormone therapy use.
RESULTS: Among participants, 5+ live births versus 0 prior pregnancies was associated with a 1.32 ms increase in PR interval (95% CI 0.25 to 2.38), with a graded association with longer QTc interval (ms) (none (prior pregnancy, no live births)=0.66 (-0.56 to 1.88), 1=0.15 (-0.71 to 1.02), 2-4=0.25 (-0.43 to 0.94) and 5+ live births=1.15 (0.33 to 1.98), p=0.008). RD was associated with longer PR interval and maximum P-wave duration (but not P-wave dispersion) among never users of hormone therapy: (PR (ms) per additional RD year: 0.10 (0.04 to 0.16); higher P-wave duration (ms): 0.09 (0.06 to 0.12)). For every year increase in reproductive period, QTc decreased by 0.04 ms (-0.07 to -0.01).
CONCLUSIONS: An increasing number of live births is related to increased and RD to decreased ventricular repolarisation time. Both grand multiparity and longer RD are related to increased atrial conduction time. Reproductive factors that alter midlife cardiac electrical conduction system remodelling in women may modestly influence cardiovascular disease risk in later life.
TRIAL REGISTRATION NUMBER: NCT00000611
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