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Word learning is typically studied as a problem in which children need to learn a single meaning for a new word. And by most theories, children’s learning is itself guided by the assumption that a new word will have only one meaning. However, the majority of words in languages are polysemous, carrying multiple related and distinct meanings. Here, we consider the implications of this disjuncture. As we review, current theories predict that children should struggle to learn polysemous words. And yet research shows that young children readily learn multiple meanings for words and represent them in qualitatively similar ways to adults. Moreover, polysemy may facilitate word learning, by allowing children to use their knowledge of familiar meanings of a word to learn its other meanings. These findings motivate a new perspective on word learning that recognizes polysemy as a fundamental feature of language, instead of treating it as an edge case.  相似文献   
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During the COVID-19 pandemic, an unprecedented number of employees faced the challenges of telework. However, the current literature has a limited understanding of the implications of employees' obligated home-based telework and their satisfaction with the work and home domains. We use boundary theory to examine work and home boundary violations in relation to satisfaction with domain investment in two daily diary studies, examining both domain-specific and cross-domain effects. In addition, we examine the moderating role of segmentation preferences in both studies and investigate the mediating role of work- and home-related unfinished tasks in Study 2. Both studies provide empirical evidence of the domain-specific relationship between boundary violations and domain satisfaction and provide limited support for cross-domain effects. Neither study finds support for the notion that segmentation preferences moderate the relationship between boundary violations and domain satisfaction. Finally, the results of Study 2 highlight the importance of unfinished tasks in the relationship between boundary violations and domain satisfaction. Specifically, work and home boundary violations relate to an increase in unfinished tasks in both domains. Finally, the indirect effects suggest that home-related unfinished tasks may be detrimental to satisfaction in both domains, while work-related unfinished tasks may be detrimental for work-related, but not home-related, satisfaction.  相似文献   
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Given his lifelong battle against one‐sidedness Jung's persistent prioritising of the ‘inner life’ over the ‘outer’ can seem problematic. The question is raised as to whether an approach that seems to verge uncomfortably close to solipsism can sometimes render Jung blind to the intuition that psychic life is constituted by an on‐going interplay between inner and outer, self and other (an intuition that he himself sometimes articulated so brilliantly). The ‘ambiguation’ of Jung's work offers an opportunity to confront this problem by utilising a critical dynamic that is consistent with Jung's psychological insights.  相似文献   
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The term ‘Climategate’ refers to the episode in November 2009 when emails between climate scientists were stolen and published online. The content of this private correspondence prompted criticism from diverse commentators who cast doubts on the methods, claims, and members of the climate science community. In response, individual scientists and scientific institutions published statements responding to the allegations of scientific fraud. Gieryn's concept of ‘boundary-work’ can be used to analyse the rhetoric of scientists in situations where their legitimacy is disputed. More specifically, boundary-work can be used to analyse the responses of scientists in terms of: how they represent the attributes of science, what types of boundary-work they undertake (e.g. expulsion, expansion, and protection), and the professional interests that come into play. A boundary-work analysis of the commentaries published in the aftermath of Climategate reveals that scientists characterised climate science as consensual, asocial, and open. Scientists depicted climate science as consensual with the purpose of expelling dissenters and protecting areas of climate science from criticism. Scientists also described knowledge about climate as being ideally produced apart from society so that they could preserve their autonomy and exclude individuals who are accused of being ‘politically biased’. Scientists characterised climate science as necessarily open as the means to justify both existing and additional public funding for science and to avoid external corrective interventions against scientific opacity. Scientists and their critics alike interpreted the stolen emails as embarrassing deviations from the alleged social demands of a consensual, objective, and accessible science.  相似文献   
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In vitro meat (IVM), also known as cultured meat, involves growing cells into muscle tissue to be eaten as food. The technology had its most high-profile moment in 2013 when a cultured burger was cooked and tasted in a press conference. Images of the burger featured in the international media and were circulated across the Internet. These images—literally marks on a two-dimensional surface—do important work in establishing what IVM is and what it can do. A combination of visual semiotics and narrative analysis shows that images of IVM afford readings of their story that are co-created by the viewer. Before the cultured burger, during 2011, images of IVM fell into four distinct categories: cell images, tissue images, flowcharts, and meat in a dish images. The narrative infrastructure of each image type affords different interpretations of what IVM can accomplish and what it is. The 2013 cultured burger images both draw upon and depart from these image types in an attempt to present IVM as a normal food stuff, and as ‘matter in place’ when placed on the plate. The analysis of individual images and the collection of images about a certain object or subject—known as the imagescape—is a productive approach to understanding the ontology and promise of IVM and is applicable to other areas of social life.  相似文献   
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The Y-groove cracking test by submerged arc welding was employed to study the susceptibility of a low-carbon high-strength steel to hydrogen-induced cold cracking (HICC). The morphology of hydrogen cracks was observed using an electron probe microscope. The results showed that the heat-affected zone (HAZ) has a higher susceptibility to HICC than the weld metal and that increasing heat input can improve the HICC resistance of the weldment. The intergranular microcracking is the main HICC mode at the lowest heat input condition, accompanied with some transgranular microcracks attached to complex inclusions. In combination with phase transformation behaviour in sub-zones, the effect of the phase transformation sequence is proposed to try to illustrate the fact that the fine-grained HAZ has higher probability of hydrogen cracking than the coarse-grained HAZ owing to the occurrence of hydrogen enrichment in the fine-grained HAZ after the transformation.  相似文献   
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Nanoindentation creep tests were performed at the grain boundary and grain interior in pure magnesium. The grain boundary showed a high strain rate sensitivity exponent and was dominated by grain boundary sliding due to the high diffusion rate at the grain boundary. The grain boundary affected the deformation behavior of the area at a distance of 2 µm into the grain interior. On the other hand, the grain interior had a low strain rate sensitivity exponent, because its matrix was too large to be influenced by the grain boundary. The deformation mechanism in the grain interior was determined to be dislocation slip.  相似文献   
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