人文科学最新文献

The process of plant domestication and subsequent adoption of agriculture have long been viewed by archaeologists as key factors in the emergence of social and political complexity. Ongoing research by botanists, archaeobotanists, and archaeologists, with ever-improving methodologies and technologies, reveal that the adoption of agriculture varies significantly in terms of chronologies, dietary intensity, and social impacts. It has become clear that broad-sweeping theories of agricultural adoption obscure meaningful micro-historical variations. Nowhere is this more true than in the Western Hemisphere, where the dates of the adoption of maize may differ in even geographically adjacent regions — thus the importance of focused regional studies of the history of maize consumption. In this review, we examine in detail the various methodological approaches employed in micro- and macro-botanical and isotopic studies and, importantly, appraise ongoing challenges to interpreting the findings of such research. We undertake this evaluation in the context of the northern midcontinent USA where these methodologies have produced regional maize histories that differ by as much as a thousand years in terms of both the presence of maize and the ultimate adoption of maize agriculture. We conclude that incorporating multiple refined methodological approaches is a key to understanding this variability.

Lexical proficiency is a multifaceted phenomenon that greatly impacts human judgments of writing quality. However, the importance of collocations’ contribution to proficiency assessment has received less attention than that of single words, despite collocations’ essential role in language production. This study, therefore, investigated how aspects of collocational proficiency affect the ratings that examiners give to English learner essays. To do so, collocational features related to sophistication and accuracy were manipulated in a set of argumentative essays. Examiners then rated the texts and provided rationales for their choices. The findings revealed that the use of lower-frequency words significantly and positively impacted the experts’ ratings. When used as part of collocations, such words then provided a small yet significant additional boost to ratings. Notably, there was no significant effect for increased collocational accuracy. These findings suggest that low-frequency words within collocations are particularly salient to examiners and deserving of pedagogic focus.

As an industrial science, vaccinology is susceptible to changing social, economic and political frameworks. This article reconstructs the history of the birth of the Sabin strains-derived inactivated polio vaccine (sIPV) in China. The development of this nascent vaccine can be attributed first and foremost to the circulation of knowledge and technology in the global polio research network of the 1980s, before the privatization of vaccine manufacturing and the escalation of intellectual-property protections. Tracing correspondence between Jonas Salk and a Chinese scientist, Jiang Shude, and his colleagues, we chart how institutional efforts in search of a profitable product and scientists' motives in pursuing personal careers in the post-socialist reform era led to collaboration on many levels, centered around polio vaccines. In response to recent polio history research, we also emphasize the impact of multiple temporalities of polio dramaturgy on the vaccine manufacturer, as this article demonstrates how the confluence of shifting global polio eradication agendas and contingencies in complex vaccinology undertakings ironically helped to materialize the idea of the sIPV. Finally, stories of vaccines and scientists in China add compelling subplots to the global polio history, which reveals the need to reconsider the politicization of imported technology in broader socialist contexts.A letter dated '3 June 1986' was mailed from Jonas Salk to Jiang Shude (). Jiang had been an unknown vaccinologist working at the Institute of Medical Biology (IMB) in Flower Red Cave in the Western Hills of Kunming, in south-western China. Salk had visited two years earlier to discuss the feasibility of the IMB's proposal to manufacture inactivated polio vaccine (IPV). The initial collaborative plan had come to a halt by the time Salk wrote the letter to Jiang; still, he kindly offered Jiang an opportunity to travel to Bilthoven and then Lyon to learn IPV-related technology with a generous $10,000 grant for his one-year stay in Europe.

We explored whether bilingual toddlers make use of semantic and phonological overlap between their languages to learn new words. We analysed cross-sectional and longitudinal CDI data on the words understood and produced by 1.0 to 3.0-year-old bilingual toddlers with English and one additional language. Cognates were more likely to be understood and produced compared to non-cognates. Cognate effects were modulated by whether the toddler knew the translation equivalent in the other language, highlighting that young learners are sensitive to the similarities across their languages. Additionally, exploratory analyses suggest that children with smaller vocabularies rely more on translation equivalents to support the acquisition of difficult words. Children with larger vocabulary sizes exhibited no preference for translation equivalents in comprehension, and a preference for new concepts in production. The rapid acceleration of vocabulary growth in the second year of life may explain this developmental change in translation equivalent preference.

Research on the cognitive neural mechanisms of language control often overlooks the role of rewards. To investigate how reversal rewards affect bilingual language switching during observational learning, we conducted a dual-brain electroencephalography (EEG) study. Participants, classified as direct learners or observers, performed a voluntary language-switching task under dynamic reward conditions. Our results demonstrated that both direct learners and observers exhibited high correct acquisition rates for the switch and non-switch behaviors in both pre- and post-reversal phases. Notably, direct learners and observers showed reduced switch costs in the post-reversal phase, highlighting enhanced language control efficiency. EEG analyses revealed that direct learners exhibited late positive component (LPC) switch costs in both pre- and post-reversal phases, while observers showed LPC switch costs only in the post-reversal phase. These findings support the Adaptive Control Hypothesis by highlighting the adaptability of language control mechanisms in response to dynamic reward environments during direct and observational learning.