A one-sided test for testino homogeneity of scale parameters against simple ordered alternative

In an earlier paper the authors (1997) extended the results of Hayter (1990) to the two parameter exponential probability model. This paper addressee the extention to the scale parameter case under location-scale probability model. Consider k (k≧3) treatments or competing firms such that an observation from with treatment or firm follows a distribution with cumulative distribution function (cdf) F_i(x)=F[(x-μ_i)/Q_i], where F(·) is any absolutely continuous cdf, i=1,…,k. We propose a test to test the null hypothesis H₀:θ₁=…=θ_k against the simple ordered alternative H₁:θ₁≦…≦θ_k, with at least one strict inequality, using the data X_i,j, i=1,…k; j=1,…,n₁. Two methods to compute the critical points of the proposed test have been demonstrated by talking k two parameter exponential distributions. The test procedure also allows us to construct simultaneous one sided confidence intervals (SOCIs) for the ordered pairwise ratios θ_j/θ_i, 1≦i<j≦k. Statistical simulation revealed that: 9i) actual sizes of the critical points are almost conservative and (ii) power of the proposed test relative to some existing tests is higher.     

Urban greening and mobility justice in Dhaka’s informal settlements

ABSTRACT

Urban greening in Dhaka, Bangladesh is fraught with injustice for slum dwellers. Access to the commons for the enactment of gardening, farming and foraging by the urban poor, many recent internal migrants from rural areas, is contested by wealthier citizens, developers and political elites. Through qualitative research with households within the informal settlement of Korail in Dhaka’s urban core, and a range of stakeholders in governmental and non-governmental organizations, this study critiques competing policy visions that involve urban greening and urban green infrastructure. Repurposing the conceptual lense of ‘mobility justice’ to analyse environmental and ecological issues in the global South, the findings highlight the importance of mobility concerns to just futures for urban planning.     

SOCIAL HIERARCHIES: A LABORATORY STUDY ON PUNISHMENT PATTERNS ACROSS NETWORKS

We experimentally study punishment patterns across network structures, and their effect on cooperation. In a repeated public goods setting, subjects can only observe and punish their neighbors. Centralized structures (like the star network) outperform other incomplete networks and reach contribution levels like the ones observed in a complete network. Our results suggest that hierarchical network structures with a commonly observed player benefit more from sanctions not because central players punish more, but because they follow, and promote, different punishment patterns. While quasi-central players in other incomplete architectures (like the line network) retaliate, and get trapped in the vicious circle of antisocial punishment, central players in the star network do not punish back, increase their contributions when sanctioned by peripheral players, and sanction other participants in a prosocial manner. Our results illustrate recent field studies on the evolutionary prevalence of hierarchical networks. We document a network-based rationale for this positive effect in an identity-free, fully anonymous environment. (JEL C72, C91, C92, D90, H41)     

The Therapist as Psychobiological Regulator: Dissociation,Affect Attunement and Clinical Process

Dissociation is defined as a protective coping mechanism employed on a broad spectrum: from day-to-day “spacing out” to psychic numbing to multiplicity. A convergence of recent insights in traumatology, neuroscience, and developmental theory is reviewed. These findings all point to the importance of affect regulation in infant and child development and in the therapeutic relationship, where attunement to implicit communication is crucial. Using such relational and intersubjective organizing principles as the concept of enactment and Beebe and Lachmann’s (Infant research and adult treatment: Co-constructing interactions 2002) “three principles of salience,” I discuss an analytic case in which dissociation is a central dynamic.     

Sustainable social work: Modelling knowledge production,transfer, and evidence‐based practice

Gray M, Schubert L. Sustainable social work: modelling knowledge production, transfer, and evidence‐based social work This article is a first attempt to present a model of knowledge production and transfer in social work, drawing on the expanding literature on knowledge production. It highlights features of knowledge production in social work, such as the diverse contexts in which knowledge is developed and applied. It argues that knowledge production by itself is not enough. Equally important is knowledge transfer and implementation. The literature on knowledge production highlights problems with the implementation of actually existing knowledge and the potential resistance to this implementation as highly important issues for social work research. It leads to a greater awareness of the context in which knowledge is produced and applied and creates a bridge between traditional informal and tacit ways of knowing in social work and the demands of evidence‐based practice.     

Environmental ethics for social work: Social work's responsibility to the non‐human world

Gray M, Coates J. Environmental ethics for social work: Social work's responsibility to the non‐human world This lead article in this Special Issue begins discussion on an environmental ethics for social work and raises arguments as to whether and, if so, why social workers have duties, obligations, responsibilities and commitments to the non‐human world. It provides an overview of the field of environmental ethics in searching for a moral stance to affirm an environmental social work. To what extent should social workers engage in fundamental geopolitical issues concerned with climate change, global warming, environmental degradation, pollution, chemical contamination, sustainable agriculture, disaster management, pet therapy, wilderness protection and so on and, if so, why and how? Are these issues incidental and peripheral and only of concern when they impact upon humans or do social workers have a responsibility beyond human interests? What is the significance of the ‘non‐human’ for social work? The article explores the terrain of the burgeoning field of environmental ethics to determine whether convincing ethical grounds for environmental social work might be found beyond hortatory claims of what the profession ought to be doing to address environmental concerns.     

Putting the ‘public’ into public service delivery for social welfare in South Africa

Mubangizi BC, Gray M. Putting the ‘public’ into public service delivery for social welfare in South Africa Int J Soc Welfare 2011: 20: 212–219 © 2010 The Author(s), International Journal of Social Welfare © 2010 Blackwell Publishing Ltd and the International Journal of SocialWelfare. The privatisation of some essential services in South Africa has raised severe difficulties for those for whom the idea of fees for services is quite foreign and who, in any case, cannot afford to pay for services. The government has developed several initiatives to educate people about the need to pay for services provided by local government, the largest of which was the Masakhane fees‐for‐services campaign. This article describes two recent initiatives that seek to engage local citizen participation, namely, Integrated Development Plans and izimbizo (or traditional forums). These are examined along with the challenges faced by local government in promoting citizenship participation in service delivery within a decentralised system of governance. The article concludes with some recommendations on how citizen participation can be enhanced so as to make the ‘public’ visible in public service delivery and thus improve social welfare services.     

Re‐conceptualising the link between research and practice in social work: A literature review on knowledge utilisation

Despite the recent movement towards greater research use in many areas of social work, criticisms persist that decision making in practice is seldom informed by sound research evidence. Discourse about the research‐to‐practice gap in social work has tended to focus on the feasibility of evidence‐based practice for the profession, but has rarely drawn from the broader knowledge utilisation literature. There are important understandings to be gained from the knowledge utilisation field, which spans more than six decades of interdisciplinary research.This article introduces the wider knowledge utilisation literature to a social work audience. It considers the potential of this body of literature to facilitate research use in social work, as well as conceptual issues that may be hindering it from informing improvements to research utilisation in practice.