Abstract Background Hunter-gatherer lifestyles dominated the southern African landscape up to ~ 2000 years ago, when herding and farming groups started to arrive in the area. First, herding and livestock, likely of East African origin, appeared in southern Africa, preceding the arrival of the large-scale Bantu-speaking agro-pastoralist expansion that introduced West African-related genetic ancestry into the area. Present-day Khoekhoe-speaking Namaqua (or Nama in short) pastoralists show high proportions of East African admixture, linking the East African ancestry with Khoekhoe herders. Most other historical Khoekhoe populations have, however, disappeared over the last few centuries and their contribution to the genetic structure of present-day populations is not well understood. In our study, we analyzed genome-wide autosomal and full mitochondrial data from a population who trace their ancestry to the Khoekhoe-speaking Hessequa herders from the southern Cape region of what is now South Africa. Results We generated genome-wide data from 162 individuals and mitochondrial DNA data of a subset of 87 individuals, sampled in the Western Cape Province, South Africa, where the Hessequa population once lived. Using available comparative data from Khoe-speaking and related groups, we aligned genetic date estimates and admixture proportions to the archaeological proposed dates and routes for the arrival of the East African pastoralists in southern Africa. We identified several Afro-Asiatic-speaking pastoralist groups from Ethiopia and Tanzania who share high affinities with the East African ancestry present in southern Africa. We also found that the East African pastoralist expansion was heavily male-biased, akin to a pastoralist migration previously observed on the genetic level in ancient Europe, by which Pontic-Caspian Steppe pastoralist groups represented by the Yamnaya culture spread across the Eurasian continent during the late Neolithic/Bronze Age. Conclusion We propose that pastoralism in southern Africa arrived through male-biased migration of an East African Afro-Asiatic-related group(s) who introduced new subsistence and livestock practices to local southern African hunter-gatherers. Our results add to the understanding of historical human migration and mobility in Africa, connected to the spread of food-producing and livestock practices.
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doi: 10.37718/csa.2022.03
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This article considers colonial rhetoric manifested in representations of early settlement in the mining town of Kiruna in northernmost Sweden. Kiruna was founded more than 100 years ago by the LKAB Company with its centre the prosperous mine on Sami land. Continued iron ore mining has made it necessary to relocate the town centre a few kilometres north-east of its original location to ensure the safety of the people. The ongoing process of the town’s transformation due to industrial expansion has given rise to the creation of a memorial park between the town and the mine, in which two historical photographs have been erected on huge concrete blocks. For the Swedish Sami, the indigenous people, the transformation means further exploitation of their reindeer grazing lands and forced adaption to industrial expansion. The historical photographs in the memorial park fit into narratives of colonial expansion and exploration that represent the town’s colonial past. Both pictures are connected to colonial, racialised and gendered space during the early days of industrial colonialism. The context has been set by discussions about what Kiruna “is”, and how it originated. My aim is to study the role of collective memory in mediating a colonial past, by exploring the representations that are connected to and evoked by these pictures. In this progressive transformation of the town, what do these photographic memorials represent in relation to space? What are the values made visible in these photographs? I also discuss the ways in which Kiruna’s history becomes manifested in the town’s transformation and the use of history in urban planning. I argue that, in addressing the colonial history of Kiruna, it is timely to reconsider how memories of a town are communicated into the future by references to the past. I also claim that memory, history, and remembrance and forgetting are represented in this process of history-making and that they intersect gender, class and ethnicity.
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Recently rediscovered photographs of the remains of thirteen individuals buried in the Sado Valley Mesolithic shell middens of Poças de S. Bento and Arapouco, excavated in 1960 and 1962, show the potential of revisiting excavation archives with new methods. The analysis, which applies the principles of archaeothanatology and is enriched by experimental taphonomic research, confirmed details concerning the treatment of the dead body and provided new insights into the use of burial spaces. Some bodies may have been mummified prior to burial, a phenomenon possibly linked to their curation and transport, highlighting the significance of both the body and the burial place in Mesolithic south-western Portugal.
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handle: 10138/309933
A neural language model trained on a text corpus can be used to induce distributed representations of words, such that similar words end up with similar representations. If the corpus is multilingual, the same model can be used to learn distributed representations of languages, such that similar languages end up with similar representations. We show that this holds even when the multilingual corpus has been translated into English, by picking up the faint signal left by the source languages. However, just as it is a thorny problem to separate semantic from syntactic similarity in word representations, it is not obvious what type of similarity is captured by language representations. We investigate correlations and causal relationships between language representations learned from translations on one hand, and genetic, geographical, and several levels of structural similarity between languages on the other. Of these, structural similarity is found to correlate most strongly with language representation similarity, whereas genetic relationships—a convenient benchmark used for evaluation in previous work—appears to be a confounding factor. Apart from implications about translation effects, we see this more generally as a case where NLP and linguistic typology can interact and benefit one another.
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popularity | Top 10% | |
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doi: 10.1017/nps.2021.4
AbstractThousands of Roma were killed in Ukraine by the Nazis and auxiliary police on the spot. There are more than 50,000 Roma in today’s Ukraine, represented by second and third generation decendants of the genocide survivors. The discussion on Roma identity cannot be isolated from the memory of the genocide, which makes the struggle over the past a reflexive landmark that mobilizes the Roma movement. About twenty Roma genocide memorials have been erected in Ukraine during last decade, and in 2016 the national memorial of the Roma genocide was opened in Babi Yar. However, scholars do not have a clear picture of memory narratives and memory practices of the Roma genocide in Ukraine. A comprehensive analysis of the contemporary situation is not possible without an examination of the history and memory of the Roma genocide before 1991.
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doi: 10.35360/njes.689
The focus of doctoral research is of great significance for the development of an academic discipline and the potential for innovation. A significant number of PhD graduates however expect to be employed as university teachers, and the correlation between competence needs as suggested by the undergraduate curriculum and PhD research appears to be weak. Based on library catalogue data and digital archives, this study investigates interrelations between the initial research orientation of individual scholars and the development of English as a university subject in Sweden. Dissertation topics 1950-1999 indicate a gradual shift from a dominance of linguistics in the earlier decades to a dominance of literary studies towards the end of the period. Dissertations in the field of English-language literature between 2000 and 2019 demonstrate a growing interest in literatures outside England and the United States, a predominance of studies of prose and a move towards contextual modes of criticism centred on social or political theories. Studies of modern or contemporary literature dominate greatly whereas there are few dissertations on older literature. Undergraduate course plans and literature lists for 2020 from the major research universities show a strong connection between first-term literature courses and current research, as indicated by the topics of PhD dissertations from the first two decades of the twenty-first century. The teaching of older literature is not supported by new research to the same extent, however, which means that it may become increasingly difficult to ensure the close links between research and study programmes stipulated in the Swedish Higher Education Act (1992:1434).
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doi: 10.3390/fi16010012
Educational content recommendation is a cornerstone of AI-enhanced learning. In particular, to facilitate navigating the diverse learning resources available on learning platforms, methods are needed for automatically linking learning materials, e.g., in order to recommend textbook content based on exercises. Such methods are typically based on semantic textual similarity (STS) and the use of embeddings for text representation. However, it remains unclear what types of embeddings should be used for this task. In this study, we carry out an extensive empirical evaluation of embeddings derived from three different types of models: (i) static embeddings trained using a concept-based knowledge graph, (ii) contextual embeddings from a pre-trained language model, and (iii) contextual embeddings from a large language model (LLM). In addition to evaluating the models individually, various ensembles are explored based on different strategies for combining two models in an early vs. late fusion fashion. The evaluation is carried out using digital textbooks in Swedish for three different subjects and two types of exercises. The results show that using contextual embeddings from an LLM leads to superior performance compared to the other models, and that there is no significant improvement when combining these with static embeddings trained using a knowledge graph. When using embeddings derived from a smaller language model, however, it helps to combine them with knowledge graph embeddings. The performance of the best-performing model is high for both types of exercises, resulting in a mean Recall@3 of 0.96 and 0.95 and a mean MRR of 0.87 and 0.86 for quizzes and study questions, respectively, demonstrating the feasibility of using STS based on text embeddings for educational content recommendation. The ability to link digital learning materials in an unsupervised manner—relying only on readily available pre-trained models—facilitates the development of AI-enhanced learning.
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‘Public health’ investigates the determinants of health, born during the Enlightenment in the seventeenth/eighteenth century. But ‘public health’ is also policies, aiming at the improvement of a population’s health. There is a mutual interchange between public health as science and as politics. A brief historical background is followed by an analysis of the impacts of political changes during the first two decades of the twenty first century in Sweden. In 2005, a policy document accepted by all political parties except for the Moderate Party highlighted socio-economic factors and structural reforms to decrease the health gaps in the population. The general election in September 2006 resulted in a new majority in the parliament and a center-right coalition government, including the Moderates and three parties that had approved of the 2005 document. In 2007 a “new public health policy” was introduced. Its priority lists stressed individual behavior and the new policy should be incentives to work instead of “allowances”. The Public Health Institute got instructions in accordance with the new policy. The ten years following this policy change has seen public health policies and attitudes to research shifting almost year by year. The new policy met a counter-stream from the very beginning. Influenced by Michael Marmot’s WHO Commission on health inequalities, regional commissions started in Sweden, Recommendations how to decrease social health gaps was adopted with almost no opposition by regional health boards in 2012–2013. But new problems were now occupying politicians and media—how to finance the growth of the old, multi-sick part of the population and increasing costs for new medical technologies and drugs. Public health as an academic discipline was in the middle of this fluctuating political landscape with direct effects on what has been considered worth listening to or support by public money.
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Iron ore mining in the Norrbotten region of Sweden began in the early years of the twentieth century as a commercially uncertain and even dangerous proposition. But even before it began to generate profits, public debate began over the appropriate role of the state and of private capital (including foreign investors). This included whether iron ore should be exported for profit or retained for future processing in Sweden—even though the technology and infrastructure for such domestic industry did not exist. Tracing the evolution of this debate in the Swedish news media through to the First World War, this paper argues that the revenue generated by exports became more attractive than the promise of future domestic industry because that revenue could underwrite pressing political objectives. Although domestic iron ore processing remained linked to visions of future industrial prosperity, uncertain visions of future prosperity lost appeal as the capacity for export revenues to generate prosperity in the present became more potent.
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Abstract Background Hunter-gatherer lifestyles dominated the southern African landscape up to ~ 2000 years ago, when herding and farming groups started to arrive in the area. First, herding and livestock, likely of East African origin, appeared in southern Africa, preceding the arrival of the large-scale Bantu-speaking agro-pastoralist expansion that introduced West African-related genetic ancestry into the area. Present-day Khoekhoe-speaking Namaqua (or Nama in short) pastoralists show high proportions of East African admixture, linking the East African ancestry with Khoekhoe herders. Most other historical Khoekhoe populations have, however, disappeared over the last few centuries and their contribution to the genetic structure of present-day populations is not well understood. In our study, we analyzed genome-wide autosomal and full mitochondrial data from a population who trace their ancestry to the Khoekhoe-speaking Hessequa herders from the southern Cape region of what is now South Africa. Results We generated genome-wide data from 162 individuals and mitochondrial DNA data of a subset of 87 individuals, sampled in the Western Cape Province, South Africa, where the Hessequa population once lived. Using available comparative data from Khoe-speaking and related groups, we aligned genetic date estimates and admixture proportions to the archaeological proposed dates and routes for the arrival of the East African pastoralists in southern Africa. We identified several Afro-Asiatic-speaking pastoralist groups from Ethiopia and Tanzania who share high affinities with the East African ancestry present in southern Africa. We also found that the East African pastoralist expansion was heavily male-biased, akin to a pastoralist migration previously observed on the genetic level in ancient Europe, by which Pontic-Caspian Steppe pastoralist groups represented by the Yamnaya culture spread across the Eurasian continent during the late Neolithic/Bronze Age. Conclusion We propose that pastoralism in southern Africa arrived through male-biased migration of an East African Afro-Asiatic-related group(s) who introduced new subsistence and livestock practices to local southern African hunter-gatherers. Our results add to the understanding of historical human migration and mobility in Africa, connected to the spread of food-producing and livestock practices.
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doi: 10.37718/csa.2022.03