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In many Western science systems, funding structures increasingly stimulate academic research to contribute to practical applications, but at the same time the rise of bibliometric performance assessments have strengthened the pressure on academics to conduct excellent basic research that can be published in scholarly literature. We analyze the interplay between these two developments in a set of three case studies of fields of chemistry in the Netherlands. First, we describe how the conditions under which academic chemists work have changed since 1975. Second, we investigate whether practical applications have become a source of credibility for individual researchers. Indeed, this turns out to be the case in catalysis, where connecting with industrial applications helps in many steps of the credibility cycle. Practical applications yield much less credibility in environmental chemistry, where application-oriented research agendas help to acquire funding, but not to publish prestigious papers or to earn peer recognition. In biochemistry practical applications hardly help in gaining credibility, as this field is still strongly oriented at fundamental questions. The differences between the fields can be explained by the presence or absence of powerful upstream end-users, who can afford to invest in academic research with promising long term benefits.  相似文献   
995.
ABSTRACT

The length of telomeres is an objective measure of biologic ageing. This study evaluated the extent minutes of walking per week are associated with leukocyte telomere length (LTL) in a random sample of 5,823 U.S. adults. The investigation was cross-sectional and data were obtained from the National Health and Nutrition Examination Survey (NHANES). LTL was measured by the quantitative polymerase chain reaction method. Walking minutes was calculated from walking frequency and duration measures. Results showed that for each year of chronological age, telomeres were 15.6 base pairs shorter (P < 0.0001). With walking minutes and LTL treated as continuous variables, the relationship was quadratic, not linear (F = 11.2, P = 0.0023). With walking time divided into three categories, adults who performed ≥ 150 minutes of walking per week had longer telomeres than those who did no regular walking, and those who did some, but less than the recommendation (F = 5.0, P = 0.0137). Regular walkers were estimated to have a biologic ageing advantage associated with 6.5–7.6 years less biologic ageing compared to non-walkers, after adjusting for covariates. Additional investigations designed to study causality and the mechanisms associated with the walking and LTL relationship are needed.  相似文献   
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997.
ABSTRACT

The shifting constitution of journalists as humanitarian actors has profound implications for changing forms of journalism practice, as well as for the normative models through which journalists understand and reflect on that practice. In an effort to develop a more empirically-grounded engagement with change, this article explores the interview testimonies of Australian journalists who cover international and humanitarian issues. It argues that frameworks reliant on stark oppositions (between past and present, optimism and pessimism, or moral agency and material structure) are both empirically and practically problematic, and seeks to move beyond these. Engagement with data from semi-structured interviews offers insight into how journalists’ perceptions of and responses to change are shaped by the historical and shifting institutional relations in which they are implicated.  相似文献   
998.
ABSTRACT

Amid rising controversy around the alleged distinctions between merit and excellence lies a familiar refrain, scarcity. The narrative of academic scarcity, proclaiming the insufficient numbers of scholars and academics of color, permeates conversations in higher education. We suggest that the academic scarcity narrative, a remnant of stagnant logics of diversity, circulates as a contemporary mechanism of what we name disciplinary containment. Extending disciplinary conversations around rhetorical containment, we argue that disciplinary containment perpetuates whiteness.  相似文献   
999.
Current conceptions of accountability imply that, in order for teachers to be able to hold themselves to account, they need first to have cultivated certain ‘professional dispositions’. But these conceptions fail to acknowledge the extent to which teachers are first and foremost accountable ‘as such’. For the early existentialist thought of the philosopher Jean‐Paul Sartre, this relates to a kind of responsibility premised on the ways in which we are always and inevitably responding to the world in which we find ourselves (with others). In this paper, I offer a reconceptualisation of teacher accountability in light of this, one that recognises implicit responses in classroom situations as underpinned by the subjectivity of those who bring these situations to light—often in subtle and immeasurable ways.  相似文献   
1000.
The Jessie Books are a seven-book series complete with a dedicated website. Each book features a 5-year-old girl named Jessie who happens to live in a city with her two moms. Each book features Jessie as an ordinary young girl engaging in familiar, life-enriching activities. Across The Jessie Books, the community of caregivers, extended relatives, and intergenerational friends convey the notion of a caring and loving family. This concept of family is relevant to elementary education in light of the expanding diversity in and around schoolchildren. Increasing numbers of school-age children have lesbian mothers and caregivers, or live in dual mom-headed households. For adults who deem The Jessie Books' narrative beyond the scope of young readers, links are made between the storylines and the English Language Arts Common Core State Standards. Ideally, upon discovery of these texts, their content and integration will be called for and embraced in the elementary curriculum.  相似文献   
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