Influence of rheology on the quality of surface finish of cement-based mortars

Aesthetics of concrete structures is directly related to the quality of their surface finish. The objective of this investigation was to examine the effect of rheological properties of cement-based mortars on the quality of their surface finish. The study was divided into two phases. Firstly, the influence of the mix composition of mortars, viz. the water to cement (w/c) ratio, the sand content and the superplasticiser (SP) dosage on their rheology was evaluated. Secondly, the surface finish quality was characterised and related to the rheology of the studied systems. Rheology of these materials, i.e. the yield value, was measured using a vane viscometer. The quality of the surface finish was assessed by quantification of the surface air voids by analysing digital photographs of the mould finished sample surfaces. It was found that an increase in the w/c ratio and the SP content decreased the yield value, whilst the increase in the sand content had an opposite effect. When the surface quality is concerned, an increase in the yield value was found to increase the total content of the surface air voids and especially those with size smaller than 1 mm in diameter. Moreover, the analysis of the location of the surface air voids along the height of the sample revealed that with the increase in the yield value their concentration was higher in the bottom section of the analysed samples.

Spectacles of military urbanism in online representations of the Elite Squad of the military police of Rio de Janeiro: a multimodal approach

This paper presents a multimodal analysis of online self-representations of the Elite Squad of the military police of Rio de Janeiro, the Special Police Operations Battalion BOPE. The analysis is placed within the wider context of a “new military urbanism”, which is evidenced in the ongoing “Pacification” of many of the city’s favelas, in which BOPE plays an active interventionist as well as a symbolic role, and is a kind of solution which clearly fails to address the root causes of violence which lie in poverty and social inequality. The paper first provides a sociocultural account of BOPE’s role in Rio’s public security and then looks at some of the mainly visual mediated discourses the Squad employs in constructing a public image of itself as a modern and efficient, yet at the same time “magical” police force.

Victims, Violence and Voice: Transitional Justice, Oral History and Dealing with the Past

Transitional justice is concerned with the legal and social processes established to deal with the legacy of violence in post-conflict and post-authoritarian contexts. These processes are essentially “creatures of law” – they are established by statute, their work is molded and shaped by lawyers, and their outcomes are benchmarked against what is or is not acceptable in domestic and international law. Concerns have mounted in recent years about the dominance of legalism within the field and the instrumentalization of those most directly affected by past violence. A commonly prescribed – but as yet largely empirically untested – corrective is that transitional justice theory and practice must become more open to interdisciplinary insights and perspectives. The interview – in different guises, contexts and settings – is at the heart of most transitional justice processes. As a historian now working in a School of Law I reflect in this article on the theoretical and practical intersections between law, history, and the interview. Drawing on more than 200 interviews concerning the Northern Ireland conflict and six other international case studies I concentrate in particular on interview-based initiatives that purport to be “victim-centered”. Having identified three interrelated risks - the manipulation of victim voice by vested interests, the affording of authority to particular voices, and the reification or “freezing” of identity - and having related these to the constraints of legal mechanisms and a wider failure to manage victims’ expectations, I argue that a greater familiarity with oral history theory and praxis can usefully illuminate the tensions between legal and historical approaches to engaging voice, and ultimately offer guidance to the shared challenge of victim-centered transitional justice.

Globalization and the State in Contemporary Crime Fiction:A World of Crime

Why has crime fiction become a global genre? How do writers use crime fiction to reflect upon the changing nature of crime and policing in our contemporary world? This book argues that the globalization of crime fiction should not be celebrated uncritically. Instead, it looks at the new forms and techniques writers are using to examine the crimes and policing practices that define a rapidly changing world. In doing so, this collection of essays examines how the relationship between global crime, capitalism, and policing produces new configurations of violence in crime fiction – and asks whether the genre can find ways of analyzing and even opposing such violence as part of its necessarily limited search for justice both within and beyond the state.

Beyond Typologies: Foregrounding Meaning and Motive in Domestic Violence Perpetration

Within the study of domestic violence typological approaches have gained prominence in part as a response to the wider feminist canon that presumes perpetrators are all simply motivated by male power. In this article we use a single case study to query the presumption inherent in the most commonly used typological approaches that offender motivations remain largely static overtime and can be read off easily from self-reports or official records. We conclude by pointing to the need, both for academics and practitioners, to engage interpretively with the specific meanings acts of violence hold for domestic violence perpetrators - informed as they can be by sexist values, perceptions of entitlement and a specific history of conflict, suspicion or grievance – that can change who they are and the way they behave in the aftermath of assaults and breakups, as the foreground of crime is reincorporated into a background narrative.

Dealing with the Legacy of Ethnic Conflict: Confronting ‘Othering’ through Transformative Adult Education—A Northern Ireland Case Study

Despite its peace process, Northern Ireland remains a deeply divided society. The legacy of a 30-year conflict has ensured that the state continues to be prone to outbreaks of violence over contentious issues such as Orange Order parading and the flying of national flags. This paper argues that in order to address this legacy, there is a need to confront the Othering processes that have helped to generate and sustain division. It will argue that programmes of adult education can play an important role in helping the conflicting groups to reimagine their ‘exclusive’ notions of the nation to one capable of incorporating the Other.

No War, No Peace: Northern Ireland after the Agreement

In 1998 a historic agreement, commonly known as the Belfast or Good Friday Agreement, formed the basis of a negotiated settlement for the future of Northern Ireland. Since that time the level of violence in Northern Ireland has reduced but many problematic issues related to governance, sectarianism, and community relations remain on the political agenda and have destabilized the post-peace accord environment. Many of these issues can be viewed as either causes or consequences of the protracted conflict in Northern Ireland. This special issue examines some of these issues from a political psychology perspective. Economic, political, social, and psychological factors that have supported and hindered progress towards peace and stability are considered. While the paramilitary ceasefires have remained intact and certain aspects of life in Northern Ireland have been transformed, the road to peace has been hindered by both political and psychological intransigence. This paper offers an opportunity to reevaluate conceptualisations of conflict and its management in chronic situations, where divisions are deeply embedded within societal structures and relationships, and consider factors that may act as barriers to the development of a lasting peace.

‘Hearing Voices': Punishing women’s mental ill-health in Northern Ireland’s jails

Informed by primary interviews and observational research conducted by the authors with women prisoners in Northern Ireland, this article focuses on prison as an institutional manifestation of women’s powerlessness and vulnerability, particularly those enduring mental ill-health. It contextualises their experiences within continua of violence and ‘unsafety’. It also considers official responses to critical inspection reports and those of the Northern Ireland Human Rights Commission based on the authors’ research findings. Finally, the primary research demonstrates that three decades on from publication the first critical analyses of women’s imprisonment, the conditions of gendered marginalisation, medicalisation and punishment remain. This is brought into stark relief in the punitive regimes imposed on those most vulnerable through mental ill-health.

What are you looking at?: Prisoner Confrontations and the Search for Respect

This article examines the occurrence of fights, assaults, arguments and threats of violence between adult male prisoners in an English category C prison. The self-narratives of 40 men are analysed to investigate whether some prisoners engage in more confrontations than others due to a psychological need to protect their identity. The findings indicate that how an individual understands and constructs their self-narrative can influence their involvement in aggressive behaviour. Implications for interventions attempting to reduce aggression are explored.

Behavior analytic perspective on victimology

The field of victimology has become an area of serious scientific enquiry only recently and now attracts a wide range of theories from within multiple disciplines. In this paper the contribution that the science of behavior analysis can make to the conceptualization of the field is explored by investigating what makes people vulnerable to becoming victims or indeed perpetrators of violence and by examining why some people who have experienced violent incidents become victims while others grow to be survivors. A behavior analytic perspective sheds new light on these issues.

Behavior analytic perspective on victimology

The field of victimology has become an area of serious scientific enquiry only recently and now attracts a wide range of theories from within multiple disciplines. In this paper the contribution that the science of behavior analysis can make to the conceptualization of the field is explored by investigating what makes people vulnerable to becoming victims or indeed perpetrators of violence and by examining why some people who have experienced violent incidents become victims while others grow to be survivors. A behavior analytic perspective sheds new light on these issues

Cosmopolitan Exception

There has been a resurgence of interest in cosmopolitanism in contemporary political theory, based upon the hopeful premise that it heralds an ameliorative response to the malignity of sovereignty's lack and the treacherous violence of sovereignty's excess. The promise of cosmopolitanism inheres in the claim that state sovereignty is and should be supplemented by an international system backed by the legitimacy of international law, grounded in the sovereignty of human rights. Drawing upon Foucault and Agamben, my argument in this essay is that the laudable endeavour of liberal cosmopolitans is flawed in two ways: first, cosmopolitanism cannot escape sovereign violence, because it cannot escape sovereignty; and second, cosmopolitans misconstrue the composition of the very sovereignty they aim to escape. This means that cosmopolitan theorists are unable to identify cosmopolitan practices of sovereignty that also entail forms of violence: cosmopolitan exception. Cosmopolitan exception denotes violent sovereign practices that cannot be differentiated from the protection of rights.