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191.
Aaron Graham 《Slavery & abolition》2018,39(2):315-332
Slave societies such as Jamaica were among the earliest regions to adopt new technologies, suggesting that slavery was not synonymous with economic backwardness. This article uses the efforts of the Falmouth Water Company to adopt the new hydraulic ram between 1799 and 1805 to show that this process was also not restricted to the plantation sector and that the island possessed an unexpected capacity for technological adaption. This was based on local skills in mechanical and civil engineering derived from the plantation sector, and a wider political and financial background that supported innovation when the right conditions were in place. 相似文献
192.
Different strategies for managing the work non-work interface: a test for unique pathways to work outcomes 总被引:3,自引:0,他引:3
Scientific evidence linking employers' efforts to help workers to manage the work non-work interface to actual outcomes at work remains scarce. In this study of 200 women employed in a Canadian school district, a research model was devised to explain how two strategies for managing the interface may affect stress symptoms, absenteeism and turnover intention. Several features distinguish this model from earlier models of the work non-work interface. That is, two directions of work non-work conflict, a mediator between the strategies and work outcomes, are specified, each strategy is set to relate directly to only one direction of conflict, and each direction is set to relate directly to stress symptoms and either absenteeism or turnover intention. LISREL analysis supported the superiority of the research model to a general model incorporating more common conceptualizations of the work non-work interface. 相似文献
193.
The sample specific nature of reliability is often overlooked in substantive research, with investigators frequently referencing
reliability estimates from previous studies as the basis for presuming the score integrity for their data. The purpose of
the current study was to examine this practice, known as reliability induction, across studies using a popular life satisfaction
(LS) measure, the Satisfaction with Life Scale. A comprehensive literature search was conducted, yielding a final sample of
196 studies using the instrument. Fifty-two studies involving 76 samples induced reliability coefficients from other sources.
These studies were coded in terms of sample characteristics and variability estimates to derive comparisons in these two areas
between the induced reports and the original studies. Results suggest that none of the studies inducing reliability had sufficient
justification for induction. It was also found that estimating reliability coefficients for the data in hand has increased
relative to induced reports and studies omitting reliability information. Practical implications for substantive researchers
are discussed and suggestions for additional research are provided. 相似文献
194.
Krystal D. Mize Melannie Pineda Alexis K. Blau Kathryn Marsh Nancy Aaron Jones 《Infancy》2014,19(3):338-348
Recent research has demonstrated a relationship between infants' tonic electroencephalogram (EEG) patterns and approach‐style jealousy responses (Mize & Jones, 2012 ). Although it has been found that adults exhibit approach‐style neural activity during jealousy paradigms (Harmon‐Jones, Peterson, and Harris, 2009 ), parallel research on neural activity during a jealousy paradigm in infants is lacking from the literature base. The purpose of the current research is to examine EEG patterns of 35 infants (Mean age = 8.92 months old) in a social‐rival paradigm designed to elicit jealousy responses. Consistent with past research, infants demonstrated more approach‐style, jealousy‐related behaviors when their mothers attended to a social‐rival than to a nonsocial rival. Additionally, infants demonstrated approach‐style anterior EEG activity during the social‐rival condition, a pattern that is associated with jealousy. The current findings suggest that the physiological underpinnings for the emotions that motivate the protection of important dyadic relationships are in place early in ontogeny. Therefore, jealousy‐type behaviors and physiological responses begin to be observable as early as 9‐months‐old when maternal attention is lost to a social‐rival. 相似文献
195.
Aaron van Klyton 《Cultural Studies》2016,30(1):106-128
World music and the narratives it produces are at the very centre of a formerly transnational production and consumption process. However, the shortened distance between the sites of production and consumption of this good, brought on by migration and greater participation, has created a dilemma for the UK-based artists who perform it: how to maintain authenticity without the added value of ‘distance’. Therefore, the aim of this article is to examine the ways in which musicians and other participants attempt to overcome this problem and in doing so (re)-construct particular aspects of their identity. Rather than being just another critique on authenticity, this article uses distance as an organizing concept in understanding the challenges facing world music production in the UK. 相似文献
196.
Social scientists have become increasingly interested in the racial identification choices of multiracial individuals, partly as a result of the federal government’s new “check all that apply” method of racial identification. However, the majority of work to date has narrowly defined the population of multiracial individuals as the “biracial” children of single-race parents. In this article, we use the open-ended ancestry questions on the 1990 and 2000 5% samples of the US Census to identify a multiracial population that is potentially broader in its understanding of multiraciality. Relative to other studies, we find stronger historical continuity in the patterns of hypodescent and hyperdescent for part-black and part-American Indian ancestry individuals respectively, while we find that multiple-race identification is the modal category for those of part-Asian ancestry. We interpret this as evidence of a new, more flexible classification regime for groups rooted in more recent immigration. Our results suggest that future work on multiracial identification must pay closer attention to the varied histories of specific multiracial ancestry groups. 相似文献
197.
Aaron Horvath Christof Brandtner Walter W. Powell 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2018,29(5):976-993
Change is frequently afoot in the nonprofit sector, both in the wider institutional environment in which nonprofits operate and within the organizations themselves. Environmental transformations—funding sources, supply and demand for collective goods, and administrative norms—create the circumstances in which organizations operate. Internally, change involves the alteration of goals, practices, and personnel. To explore how multiple aspects of change intersect across levels, we ask how organizations’ practices influence their experience of and reaction to changes in the environment. Turning open systems theories inside out, we argue that internal planning, routines, and missions give rise to organizational mindsets that imbue evolving environmental circumstances with meaning. We illustrate our argument using a unique longitudinal dataset of 196 representative 501(c)(3) public charities in the San Francisco Bay Area from 2005 to 2015 to assess both accelerators and obstacles of change. Empirically, we investigate predictors of organizational insolvency and the ability to serve constituents in the wake of the Great Recession. We find that strategic planning decreases the likelihood of insolvency whereas an orientation toward the needy increases spending. We conclude with our contributions to understanding of multi-level organizational change and nonprofit strategy. 相似文献
198.
The present paper describes an agent-based model of indirect minority influence. It examines whether indirect minority influence can lead to social change as a function of cognitive rebalancing, a process whereby related attitudes are affected when one attitude is changed. An attitude updating algorithm was modelled with minimal assumptions drawing on social psychology theories of indirect minority influence. Results revealed that facing direct majority influence, indirect minority influence along with cognitive rebalancing is a recipe for social change. Furthermore, indirect minority influence promotes and maintains attitudinal diversity in local ingroups and throughout the society. We discuss the findings in terms of social influence theories and suggest promising avenues for model extensions for theory building in minority influence and social change. 相似文献
199.
The hypothesis that aspects of current mother‐infant interactions predict an infant's response to maternal infant‐directed speech (IDS) was tested. Relative to infants of nondepressed mothers, those of depressed mothers acquired weaker voice‐face associations in response to their own mothers' IDS in a conditioned‐attention paradigm, although this was partially attributable to demographic differences between the 2 groups. The extent of fundamental frequency modulation (ΔF0) in maternal IDS was smaller for infants of depressed than nondepressed mothers, but did not predict infant learning. However, Emotional Availability Scale ratings of maternal sensitivity, coded from videotapes of mothers and infants engaged in a brief play interaction, were significant predictors of infant learning, even after maternal depression, its demographic correlates, and antidepressant medication use had been taken into account. These findings are consistent with a role for experience‐dependent processes in determining the effects of IDS on infant learning. 相似文献
200.
Aaron Dane Amy Spencer Gerd Rosenkranz Ilya Lipkovich Tom Parke 《Pharmaceutical statistics》2019,18(2):126-139
Subgroup by treatment interaction assessments are routinely performed when analysing clinical trials and are particularly important for phase 3 trials where the results may affect regulatory labelling. Interpretation of such interactions is particularly difficult, as on one hand the subgroup finding can be due to chance, but equally such analyses are known to have a low chance of detecting differential treatment effects across subgroup levels, so may overlook important differences in therapeutic efficacy. EMA have therefore issued draft guidance on the use of subgroup analyses in this setting. Although this guidance provided clear proposals on the importance of pre‐specification of likely subgroup effects and how to use this when interpreting trial results, it is less clear which analysis methods would be reasonable, and how to interpret apparent subgroup effects in terms of whether further evaluation or action is necessary. A PSI/EFSPI Working Group has therefore been investigating a focused set of analysis approaches to assess treatment effect heterogeneity across subgroups in confirmatory clinical trials that take account of the number of subgroups explored and also investigating the ability of each method to detect such subgroup heterogeneity. This evaluation has shown that the plotting of standardised effects, bias‐adjusted bootstrapping method and SIDES method all perform more favourably than traditional approaches such as investigating all subgroup‐by‐treatment interactions individually or applying a global test of interaction. Therefore, these approaches should be considered to aid interpretation and provide context for observed results from subgroup analyses conducted for phase 3 clinical trials. 相似文献