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111.
Richard Bell 《Slavery & abolition》2013,34(4):525-549
Shifting calculations about the political palatability of representing slave suicide in American abolitionist print culture reveal the extent to which debates about agency, power and consent – and thus about self-destruction – lay at the heart of that new nation's struggle over the future of slavery. Was a slave's suicide an act of principled resistance to tyranny that challenged the hypocrisy of the revolutionary settlement? Or was it a measure of abject victimhood that begged for humanitarian intervention? That representations of black suicide oscillated so dramatically between these opposing interpretive frameworks testifies to deep divides between moderates and militants, and between whites and blacks, as to who had the power to bring slavery to its knees. 相似文献
112.
In this article, we demonstrate how the taken-for-granted, inner-workings of culture can become implicated in the (in)visibility of minority members. We seek to illuminate ways in which institutions may unwittingly facilitate (in)visibility through their organizational habitus. We begin by providing further evidence of invisibility and visibility as real and commonly experienced psychosocial phenomena among minorities within predominantly white, institutional settings. In particular, we argue that a minority's inconspicuousness can be simultaneously fused together with one's conspicuousness to form what we call racial/ethnic (in)visibility. This study employs focus-group data collected from a sample of administrators and faculty from elite K-12 independent (private) schools, an institution that admittedly has been slow to make cultural change in its racial/ethnic ideologies and practices. 相似文献
113.
Philip Bell K.K. Ruthven Ann Curthoys Barry Howell David Leviatin Julie Drew 《Cultural Studies》2013,27(3):508-562
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Climate change will rob future generations—today's children and those yet to be born—of the stable climate that previous generations have enjoyed. The article explores how future generations are represented in climate change coverage in the UK national press. We examine the ‘popular’ (Mail, Mirror) and ‘quality’ (Guardian, Telegraph) press from 2010 to March 2019. We found that little attention was given to future generations; young people rarely spoke and, along with those yet to be born, were represented in ways that obscured the temporal and social inequalities that are built into climate change. 相似文献
116.
Djangir A. Babayev George I. Bell Urfat G. Nuriyev 《Journal of Combinatorial Optimization》2009,18(2):151-172
A combinatorial optimization problem, called the Bandpass Problem, is introduced. Given a rectangular matrix A of binary elements {0,1} and a positive integer B called the Bandpass Number, a set of B consecutive non-zero elements in any column is called a Bandpass. No two bandpasses in the same column can have common rows.
The Bandpass problem consists of finding an optimal permutation of rows of the matrix, which produces the maximum total number
of bandpasses having the same given bandpass number in all columns.
This combinatorial problem arises in considering the optimal packing of information flows on different wavelengths into groups
to obtain the highest available cost reduction in design and operating the optical communication networks using wavelength
division multiplexing technology. Integer programming models of two versions of the bandpass problems are developed. For a
matrix A with three or more columns the Bandpass problem is proved to be NP-hard. For matrices with two or one column a polynomial
algorithm solving the problem to optimality is presented. For the general case fast performing heuristic polynomial algorithms
are presented, which provide near optimal solutions, acceptable for applications. High quality of the generated heuristic
solutions has been confirmed in the extensive computational experiments.
As an NP-hard combinatorial optimization problem with important applications the Bandpass problem offers a challenge for researchers
to develop efficient computational solution methods. To encourage the further research a Library of Bandpass Problems has
been developed. The Library is open to public and consists of 90 problems of different sizes (numbers of rows, columns and
density of non-zero elements of matrix A and bandpass number B), half of them with known optimal solutions and the second half, without. 相似文献
117.
Bradley M. Bell 《统计学通讯:理论与方法》2013,42(2):507-517
The generalized gamma distribution includes the exponential distribution, the gamma distribution, and the Weibull distribution as special cases. It also includes the log-normal distribution in the limit as one of its parameters goes to infinity. Prentice (1974) developed an estimation method that is effective even when the underlying distribution is nearly log-normal. He reparameterized the density function so that it achieved the limiting case in a smooth fashion relative to the new parameters. He also gave formulas for the second partial derivatives of the log-density function to be used in the nearly log-normal case. His formulas included infinite summations, and he did not estimate the error in approximating these summations. We derive approximations for the log-density function and moments of the generalized gamma distribution that are smooth in the nearly log-normal case and involve only finite summations. Absolute error bounds for these approximations are included. The approximation for the first moment is applied to the problem of estimating the parameters of a generalized gamma distribution under the constraint that the distribution have mean one. This enables the development of a correspondence between the parameters in a mean one generalized gamma distribution and certain parameters in acoustic scattering theory. 相似文献
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119.
Indirect Effects of Maternal Sensitivity on Infant Emotion Regulation Behaviors: The Role of Vagal Withdrawal 下载免费PDF全文
The potential indirect effect of observed maternal sensitivity at 5 months on the development of infants' behavioral regulation of emotion from 5 to 10 months (i.e., distraction and maternal‐orientation behaviors) via infant's vagal withdrawal was investigated (N = 230). Results indicated that maternal sensitivity at 5 months was not directly associated with behavioral regulation at 10 months. However, greater maternal sensitivity at 5 months was associated with greater vagal withdrawal at 10 months, after controlling for vagal withdrawal at 5 months. Further, vagal withdrawal at 10 months was associated with greater orientation toward the mother at 10 months, after controlling for 5‐month orientation behaviors. The indirect effect of maternal sensitivity on maternal‐orientation behaviors was significant, suggesting that infant's vagal withdrawal may be one potential mechanism through which maternal sensitivity is related to behavioral regulation. 相似文献
120.
There is a broad consensus that the corporate sector has an active role in facilitating community development through corporate-community investment. However, there remains uncertainty as to how much the sector should invest without taking on responsibilities and influencing decisions which are traditionally within the realm of the state. This paper explores the contemporary role of mining companies in regional governance through a case study of housing and residential land use planning and supply within the Bowen Basin coal mining and coal seam gas extraction region in Queensland, Australia. Mining companies were found to have a broad role in planning and development with far-reaching implications for land use and the wider regional community. These arrangements have emerged in response to corporate sensibilities, some recent policy requirements and most importantly, in pragmatic response to the institutional void apparent in many regional communities. In the absence of an effective regional framework with a clear and defined role for governments and corporations, powerful corporate interests risk effectively ‘capturing’ the regional development agenda within a framework that works on short-term paternalism rather than long-term regional partnerships. This also has implications for the efficiency of governance. Stronger institutional arrangements need to be developed to strengthen the capacity of the state to oversee these relationships. Regional governance and planning theory also needs to address this deficit. 相似文献