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11.
This article aims to read the work of South African artist William Kentridge through the prism of Jacques Derrida’s notion of trace. Kentridge utilizes a unique style of filmic animation: charcoal pictures drawn on a single piece of paper, where the animation is achieved by erasing and re-drawing parts of the picture, and then filming the image again. I will argue that this technique, as well as Kentridge’s focus on deferral, memory, and identity, share an affinity with the philosophical, aesthetic, ethical, and political aspects of Derrida’s trace. Drawing attention to the trace—a paradox of presence, where motion is achieved precisely by the deferred nonpresence in each drawing—Kentridge acknowledges, in a similar way to Derrida, the impossibility of ontological thought and knowing. In post-apartheid South Africa, this is not only an aesthetic statement but a political one as well. By maintaining the traces, Kentridge concedes that knowing should be deferred, acknowledging that what we know about the other is limited, if not impossible, and that the apartheid regime’s attempt to master the other was violent and erroneous.  相似文献   
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Mycorrhizal fungi symbioses can be critical determining if established seedlings survive or not. Currently, in remnant forests, plants and their fungal symbionts are exposed to varied anthropomorphic effects related to urbanization, however, little is known about their impact on this association. We investigated the relationship between mycorrhizal fungi and tree seedling survival along an urbanization gradient. We planted three species of temperate tree seedlings (Acer rubrum, Carya ovata, and Quercus rubra) in three landscapes: urban, suburban, and rural. We measured the percent of root length colonized by mycorrhizal fungi and monitored survival during their first growing season. We analyzed mycorrhizal colonization as a function of landscape type (urban-rural) and additional variables known to contribute to mycorrhizal colonization (phosphorus, nitrogen, initial plant height). We then analyzed seedling survival as a function of the degree of mycorrhizal fungi colonization associated with the landscape gradient and of additional environmental factors (light and soil moisture). Within a species we found no changes in the levels of mycorrhizal fungi colonization across the urbanization gradient. Each species, however, had markedly different levels of colonization. Survival of A. rubrum was independent of mycorrhizal colonization, while C. ovata and Q. rubra had a significant positive response to increased mycorrhizal fungi. These findings highlight the resilience of mycorrhizal communities across the rural-urban gradient typical of this region, but they also underscore the potential sensitivity of some tree species to lower levels of mycorrhizal fungi colonization.  相似文献   
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Three experiments with 18‐ to 35‐month‐old children (= 169) studied toddler–caregiver interactions when being confronted with another person in need. In particular, we explored whether toddlers would request their caregiver to help a needy other when they are not able to help themselves. Children observed another person who needed help to accomplish a task, but were either not able to provide help as the object was out of reach (Experiment 1) or because an obstacle prevented children from interacting with the other person (Experiments 2, 2b). The experiments revealed the same developmental trend with 2.5‐year‐olds selectively involving their caregiver to help the needy other. The results are interpreted in terms of toddlers’ motivation to see others helped and with respect to their developing ability to actively involve others to regulate their emotions.  相似文献   
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Manhood in the USA today is at a crossroads. There are more models of how to be a man than ever before. And yet, despite myriad changes to the structures of work and family, the breadwinner ideology, or the heterogendered ideal that husbands should be the sole or primary earners in their families, persists in US society. This ideology affects the structure of work and family, regardless of whether individual people agree with it. Here, we discuss the breadwinner ideology and the ways that this meaning system tethers employment to masculinity and vice versa. We examine strategies for decoupling manhood from work and family and suggest ways to facilitate the undoing of gender.  相似文献   
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This study explores the influence and dominance of Alfred Chandler Jr.’s theory of corporate development within public relations [PR] history. Chandler's work on late 19th Century corporate development is influential in PR historiography. PR oftentimes places its genesis in the late 19th Century corporate sphere to distance itself from press agentry. Examining critiques of Chandler's work on corporate development, this study argues that rooting PR in a corporate context does not provide legitimacy to PR practice and skews PR history to favor a corporate narrative. Implications for both history and normative PR theory development are discussed.  相似文献   
16.
Productive ageing recognises the contribution of older people to economic, social and cultural growth and helps build a sustainable community. Being involved in community life is good for individuals and good for society. However, we know very little about the participation of and contribution by people aged 50 and over in rural communities. This research aimed to develop a better understanding of productive ageing in different types of communities in rural Victoria, Australia. An anonymous self-complete postal questionnaire was distributed to a sample of households in twenty rural communities using the Australia Post Unaddressed Select Service. Those householders 50 years of age and older were invited to complete the survey. Data collected allowed examination of social and civic engagement, familiarity with community, the value placed on social relations by people aged 50 years and over, and how community involvement was linked to community sustainability. In particular it attempts to address the question ‘Does social and civic engagement differ across declining, stable and growing rural communities?’ Despite differences among rural communities, this study showed that older people develop and maintain strong community connections and well-functioning social capital and that participation in social activities was associated with feelings of being connected with community. It also identified health issues and lack of options as the main constraints on participation. A key message for policy makers is that older people play an important role in the sustainability of rural communities. There is much to be gained from actively supporting their participation in activities that are connected to ageing well.  相似文献   
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Bisphenol A (BPA) is an endocrine disrupting chemical that is found in human urine throughout industrial societies around the globe. Consumer exposure pathways to BPA include packaged food, household dust, air, and dental fillings. To date, information on the relative contribution of the different pathways to total consumer exposure is lacking, but is key for managing substance‐associated risks. We investigated the relative contributions of the pathways known to be most relevant for nine different consumer groups. Our results suggest that the most important pathways for infants and children are the use of polycarbonate (PC) baby bottles and for adults and teenagers the consumption of canned food. Dental surgery can also considerably contribute over a short time directly after the surgery. For infants fed with PC baby bottles with mean dose rates of 0.8 μg/kgbw/d the highest exposure dose rate was calculated. This dose rate is far below the tolerable daily intake of 50 μg/kgbw/d. However, it is of the same order of magnitude as recently reported concentrations that caused low‐dose health effects in rodents. We find a pattern of falling exposure levels with rising age that is supported by urinary concentrations of BPA available for selected consumer groups. Similarly, the exposure levels we predict are confirmed by the levels reported in these studies.  相似文献   
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