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931.
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935.
This paper investigated the hypothesis that the images presented by charity posters can have an effect on attitudes towards those that they portray. Ninety-nine school-children were shown one of two MENCAP posters; one from a much-criticised campaign in the 1980s and one a poster from the 1991 campaign. Subjects who saw the older poster were more likely to report that it made them feel pity and guilt, and were less likely to agree that people with a mental handicap are able to care for themselves. However, subjects did not differ significantly on how likely they would be to donate money to the charity on seeing the poster. These results suggest that it is possible to present a positive image whilst still encouraging the possibility of donation. The implications of these findings are discussed. 相似文献
936.
Abstract A conceptual model of the impact of structural advantage and disadvantage on infant mortality rates is developed and fitted to countylevel data. This model includes mediating endogenous constructs representing medical care availability, the incidence of teenage childbearing, and low birthweight rates and is estimated for three residence categories. Both direct and indirect effects of social structure and teenage childbearing on infant mortality vary significantly across the categories. Structural advantage exerts a significant and negative direct effect on infant mortality rates in urban areas, but in rural areas this effect is indirect, operating through teenage childbearing and low birthweight. Structural disadvantage significantly increases infant mortality in both rural and urban settings, but the effects operate directly in metropolitan areas and indirectly in rural areas. These results underscore the central role that social structure continues to play in determining infant mortality rates in the United States. 相似文献
937.
Michael I. Miller Sarang Joshi David R. Maffitt James G. Mcnally Ulf Grenander 《Journal of applied statistics》1994,21(1-2):141-163
Most real-world shapes and images are characterized by high variability- they are not rigid, like crystals, for example—but they are strongly structured. Therefore, a fundamental task in the understanding and analysis of such image ensembles is the construction of models that incorporate both variability and structure in a mathematically precise way. The global shape models introduced in Grenander's general pattern theory are intended to do this. In this paper, we describe the representation of two-dimensional mitochondria and membranes in electron microscope photographs, and three-dimensional amoebae in optical sectioning microscopy. There are three kinds of variability to all of these patterns, which these representations accommodate. The first is the variability in shape and viewing orientation. For this, the typical structure is represented via linear, circular and spherical templates, with the variability accomodated via the application of transformations applied to the templates. The transformations form groups: scale, rotation and translation. They are locally applied throughout the continuum and of high dimension. The second is the textural variability; the inside and outside of these basic shapes are subject to random variation, as well as sensor noise. For this, statistical sensor models and Markov random field texture models are used to connect the constituent structures of the shapes to the measured data. The third variability type is associated with the fact that each scene is made up of a variable number of shapes; this number is not assumed to be known a priori. Each scene has a variable number of parameters encoding the transformations of the templates appropriate for that scene. For this, a single posterior distribution is defined over the countable union of spaces representing models of varying numbers of shapes. Bayesian inference is performed via computation of the conditional expectation of the parametrically defined shapes under the posterior. These conditional mean estimates are generated using jump-diffusion processes. Results for membranes, mitochondria and amoebae are shown. 相似文献
938.
Doug Miller 《Gender, Work and Organization》1996,3(4):202-214
Attempts to redefine equality initiatives to fit squarely within the enterprise culture serve only to mask an ongoing conceptual confusion in the area of equality management. This theoretical article attempts to show that this conceptual confusion lies within the narrowness of approaches which address labour market inequalities from both an equality of opportunity and an equality of outcome perspective. The inability of these perspectives to satisfactorily address systemic causes of labour market inequalities pulls our attention towards a more materialist approach which may be found (this side of a capitalist/patriarchal society) within an equality of condition frame of reference. This widens the perspective from which equality management can be pursued so that measures to address the differential distribution of resources, rewards, opportunities and treatment in the workplace are informed by all three equalities: opportunity, outcome and conditions. Such a theoretical approach is inevitably limited in that it only provides a framework for addressing those who are in paid employment, i.e. seeks to reform the capitalist/patriarchal system. However, by posing questions of the crucial pillars of such systems notably status, reward and with that power, the ‘long’ and ‘radical’ agendas of the equality project may once again be picked up. 相似文献
939.
Anthony B. Miller 《Risk analysis》1995,15(6):655-659
Cancer prevention is a major component of cancer control, which also comprises screening, treatment, rehabilitation and palliative care. Preventive approaches need to be congruent with those adopted for other chronic diseases, with a major impact in reduction of incidence and mortality of many common cancers to be expected from smoking control and dietary modification. Increasing interest is now being paid to other environmental causes of cancer, and to gene-environment interactions. However, one of the major research needs remains the evaluation of better ways to convince people to make the necessary changes in their lifestyle that will reduce their risk of cancer. 相似文献
940.
Two testable propositions suggested in the Davis and Moore functional theory of stratification are examined: the effect of scarcity on rewards and the effect of higher rewards on mobility. Data on the occupation of public school teaching for the period 1930 to 1971 were analyzed and compared with other wage and salary workers during those years. The proposition that scarcity increases rewards is rejected by these data, because higher incomes occur during periods (1) when there was less scarcity of teachers and (2) when employers discriminated against qualified married females in their hiring practices. The proposition that an increase in income advantage increases the movement of more qualified personnel into those positions found support, but for reasons more consistent with a conflict than a functional explanation. This research demonstrates the importance of economic incentives in attracting personnel but more importantly it documents how “political” groupings can regulate market forces. 相似文献