Service learning and the practice of social justice and care

The values of a social justice pedagogy in teacher education are assumed to be firmly established in South African higher education. This article discusses how serviced learning (SL) can provide practical experience of caring and serve the promotion of the ideals of social justice in two initial teacher education programmes. However, an analysis of data in this case study shows that, although SL practice has served as a platform for social justice and for care as two basic educational values, participants were not yet able to verbalize and theorize these values. They were also not able to embed these values in their reflection about service as an inherent component of education. With data from different role players in a number of SL projects, we show that the students’ discourse of what it means to be a caring teacher in a just society has not yet been developed despite the successful practical experience. It was found that, although the students had been building a practice ‘platform’ for service, they had not yet been able to articulate the conceptual intersect of care and social justice clearly. With this epistemological notion in mind, two main themes from the data analysis are discussed: 1) How SL shifted student learning from ideas ‘about’ service to implemented service, and 2) how the practical experience promoted reciprocity in inter-institutional and inter-generational communities of practice.     

The value of the aggregate data approach in meta-analysis with time-to-event outcomes

Collecting individual patient data has been described as the 'gold standard' for undertaking meta-analysis. If studies involve time-to-event outcomes, conducting a meta-analysis based on aggregate data can be problematical. Two meta-analyses of randomized controlled trials with time-to-event outcomes are used to illustrate the practicality and value of several proposed methods to obtain summary statistic estimates. In the first example the results suggest that further effort should be made to find unpublished trials. In the second example the use of aggregate data for trials where no individual patient data have been supplied allows the totality of evidence to be assessed and indicates previously unrecognized heterogeneity.     

WinBUGS - A Bayesian modelling framework: Concepts,structure, and extensibility

WinBUGS is a fully extensible modular framework for constructing and analysing Bayesian full probability models. Models may be specified either textually via the BUGS language or pictorially using a graphical interface called DoodleBUGS. WinBUGS processes the model specification and constructs an object-oriented representation of the model. The software offers a user-interface, based on dialogue boxes and menu commands, through which the model may then be analysed using Markov chain Monte Carlo techniques. In this paper we discuss how and why various modern computing concepts, such as object-orientation and run-time linking, feature in the software's design. We also discuss how the framework may be extended. It is possible to write specific applications that form an apparently seamless interface with WinBUGS for users with specialized requirements. It is also possible to interface with WinBUGS at a lower level by incorporating new object types that may be used by WinBUGS without knowledge of the modules in which they are implemented. Neither of these types of extension require access to, or even recompilation of, the WinBUGS source-code.     

Radical Normals: The Moral Career of Straight Parents as Public Advocates for Their Gay Children

Sociological research has examined straight parents in “traditional” family arrangements who become gay rights activists, but pays insufficient attention to how this puzzling identity comes into being. Drawn from observations and interviews of parents participating in a local chapter of Parents and Friends of Lesbians and Gays (PFLAG) (2009 to 2010), this paper analyzes the parenting activities undertaken by straight parents of gay children as a moral career, involving stages of acceptance that can lead to eventual public advocacy. Paradoxically, these parents become radical normals through these stages; that is to say, they “do” the work of parenting by becoming gay rights advocates, motivated by commitments to conventional imperatives of loving and supporting a child. Using the conceptual scaffolding of the moral career, this paper identifies the mechanisms that move parents through these different career stages.     

A parameterized perspective on packing paths of length two

We study (vertex-disjoint) packings of paths of length two (i.e., of P ₂’s) in graphs under a parameterized perspective. Starting from a maximal P ₂-packing ℘ of size j we use extremal combinatorial arguments for determining how many vertices of ℘ appear in some P ₂-packing of size (j+1) (if such a packing exists). We prove that one can ‘reuse’ 2.5j vertices. We also show that this bound is asymptotically sharp. Based on a WIN-WIN approach, we build an algorithm which decides, given a graph, if a P ₂-packing of size at least k exists in time O^*(2.448^3k)\mathcal{O}^{*}(2.448^{3k}) .     

A short proof of a result on a Vizing-like problem for integer total domination

In this note, we provide a short proof of a recent result on a Vizing-like problem for integer total domination in graphs given by Li and Hou (J. Comb. Optim., 2008).     

Extended Analysis of At Least Partially Ordered Multi‐factor ANOVA

For multifactor experimental designs in which the levels of at least one of the factors are ordered we show how to construct components that provide a deep nonparametric scrutiny of the data. The components assess generalised correlations and the resulting tests include and extend the Page and umbrella tests. Application of the tests described is straightforward. Orthonormal polynomials on the ANOVA responses and the factors are required and the formulae needed are given subsequently. These depend on the moments of the responses and of each factor and are easily calculated. Products of at least two of these orthonormal polynomials are then used as inputs into standard ANOVA routines. For example, using the first order orthonormal polynomial on factor A and the second order orthonormal polynomial on the ANOVA response will assess if, with increasing levels of factor A there is an umbrella response with either an increase and then a decrease or a decrease and then an increase.     

Bringing Sociology into the Public Policy Process: a Relational Network Approach

How does evidence-based sociological research influence public policymaking either directly or indirectly? Based on an analysis of a 2014 NSF-funded public policy research workshop and written case studies by workshop participants, this article provides a conceptual roadmap and varied examples of the pathways through which social science research and social scientists can inform public policy decision-making. Pathways include networks and relationships among academics, social scientists employed in government, special interest groups and non-profits, and members of the media. Many sociologists are committed to using their evidence-based findings to inform solutions to societal problems, yet are often too narrowly trained to write only for scholarly communities and are often unaware of the relations, connections, and networks that can increase the use of sociological and other social science research in public discourse and in the public policy arena. The paper highlights lessons learned about effective networks, communication channels and dissemination strategies from the workshop and case studies in order to better equip those social scientists interested to bring their research into a public policy realm with the tools to do so. Given the current political climate, this resolve seems all the more important.     

Blumer’s dilemma: The critic as a tragic figure

Herbert Blumer criticized sociological research for its failure to confront obdurate, empirical reality. However, Blumer conducted little research of his own. An examination of his works on crowds, fashion, and social problems reveals some of the same problems he found in others’ works. Blumer illustrates how critics risk becoming tragic figures, wedded to theoretical principles that cannot be put into practice. Thanks to Irwin Deutscher, John Lofland, Kathleen Lowney, David Maines, and Robert Prus for helpful comments on earlier drafts of this paper.     

A characterization of graphs with disjoint dominating and paired-dominating sets

A dominating set of a graph is a set of vertices such that every vertex not in the set is adjacent to a vertex in the set, while a paired-dominating set of a graph is a set of vertices such that every vertex is adjacent to a vertex in the set and the subgraph induced by the set contains a perfect matching. In this paper, we provide a constructive characterization of graphs whose vertex set can be partitioned into a dominating set and a paired-dominating set.