Proportional Hazards in Information Security

Nonparametric methods can be used to analyze failure times and estimate probability distributions for failures of systems due to successful attacks on confidentiality, integrity, and availability in information security. However, such methods do not take full advantage of supplemental information regarding the configurations of systems in an information infrastructure that is usually also available. One approach, which does take advantage of such information, views the risks of systems failing from various causes as competing risks and determines the correlation coefficients of different treatments to system longevity. Since the times and causes of failure in such studies are usually uncorrelated, the hazards associated with each risk are proportional. By correlating system survival times to the use of specific design enhancements and security countermeasures, as well as to system exposure based on choice of operational functionality, guidance can be obtained for making investments in information security.     

Changing class complexions on and in the British countryside

This paper explores the class complexion of the English and Welsh countryside utilising the National Statistics Socio-Economic Classification (or NS-SEC), as well as reflecting on the value of this classification given claims as to the ‘death of class’ as a meaningful subject of analysis. The paper situates analysis using the NS-SEC in a paradoxical context, whereby its very use appears, on the one hand, to demonstrate successful incorporation of academic constructions of class into the agencies of governmental social statistical production, while, on the other hand, academic discourses, including some within rural studies, appear to have undermined its very rationale. The paper argues that the classification lends support to claims that rural studies have used an overly aggregative concept of the middle class that obscures the spatial distribution of classes in the British countryside, although interpretation of the classification also needs to consider a range of broader criticisms of class analysis. The paper concludes by suggesting that the paradox surrounding the classification and rural class analysis more generally might be viewed through Latour's, [1999. Pandora's hope. Harvard University Press, London] concept of knowledge as a ‘circulatory system.’     

Markov Poisson regression models for discrete time series. Part 1: Methodology

This paper proposes and investigates a class of Markov Poisson regression models in which Poisson rate functions of covariates are conditional on unobserved states which follow a finite-state Markov chain. Features of the proposed model, estimation, inference, bootstrap confidence intervals, model selection and other implementation issues are discussed. Monte Carlo studies suggest that the proposed estimation method is accurate and reliable for single- and multiple-subject time series data; the choice of starting probabilities for the Markov process has little eff ect on the parameter estimates; and penalized likelihood criteria are reliable for determining the number of states. Part 2 provides applications of the proposed model.     

Postmodern theory and politics: Perspectives on citizenship and social justice

In this paper we consider some contributions made by postmodern perspectives to theoretical and political questions of citizenship and social justice. Postmodern theory is often dismissed as a distraction from pressing questions of material inequality and economic and political exploitation. In the paper we distinguish between ‘ludic’ or ‘spectral’ postmodernisms and ‘oppositional’ or ‘resistance’ postmodernisms. We suggest that the latter provide theoretical resources for analysing the cultural construction of inequalities and struggles around social inclusion and exclusion. The paper is divided into three sections: in the first, three dominant narratives of modernization are addressed and their implications for concepts of citizenship and social inclusion noted; in the second, some postmodern challenges to these narratives are explored in order to disclose some of the key problems with modern paradigms of citizenship and social justice; in the third section we outline two postmodern approaches to the analysis of social struggles and their contributions to debates about citizenship.     

A Test for Independence of Competing Risks with Discrete Failure Times

The identifiability problem in Competing Risks is well known. In particular, it implies that independent action or otherwise of the risks cannot be inferred from data alone. However, Crowder (1996) showed that, in the case of purely discrete failure times, an inference can be made. An algebraic criterion was derived which bears essentially on the independence in question. The condition was presented in a theoretical setting but it was pointed out that the quantities involved can be estimated from data and that, therefore, there is the potential to develop practical tests for the hypothesis of independence. It is the purpose of this paper to construct such a test. This revised version was published online in July 2006 with corrections to the Cover Date.     

A view from above: The evolving sociological landscape

How has sociology evolved over the last 40 years? In this paper, we examine networks built on thousands of sociology-relevant papers to map sociology’s position in the wider social sciences and identify changes in the most prominent research fronts in the discipline. We find first that sociology seems to have traded centrality in the field of social sciences for internal cohesion: sociology is central, but not nearly as well bounded as neighboring disciplines such as economics or law. Internally, sociology appears to have moved away from research topics associated with fundamental social processes and toward social-problems research. We end by discussing strategies for extending this work to wider science production networks.     

Practising Gender at Work: Further Thoughts on Reflexivity

In an effort to make visible the subtle and seldom acknowledged aspects of gendering dynamics, Martin focuses on unreflexive practices that both communicate and constitute gender in paid work settings. She reviews the distinction between practices that are culturally available to ‘do gender’ and the literal practising of gender that is constituted through interaction. While acknowledging that agency is involved in any practicing of gender, she considers how intentionality and agency intersect, arguing that people in powerful positions routinely practise gender without being reflexive about it. Defining practising as emergent, directional, temporal, rapid, immediate and indeterminate, Martin shows how these qualities affect men as well as women in unexpected and often harmful ways. She concludes with a call for innovative ways to ‘catch gender in practice’ and for attention to reflexivity's role in the ongoing constitution of gender at work.     

Best Practices to Reduce Migration Pressures

Are there best practices to foster economic development, reduce population growth, and protect the environment in source countries of unauthorized migration, in a manner that reduces emigration pressures and redirects migration towards legal channels? This paper outlines cooperative actions that can be undertaken by both source and receiving countries to better manage the movements of people over national borders. There are two broad approaches to foster wanted migration and to reduce unwanted migration. First, maximize migration’s payoffs by ensuring that the 3 Rs of recruitment, remittances, and returns foster economic and job growth in emigration areas. Second, make emigration unnecessary by adapting trade, investment and aid policies, and programmes that accelerate economic development and thus make it unnecessary for people to emigrate for jobs and wages. Most of the changes needed for stay–at–home development must occur in emigration areas, but immigration areas can cooperate in the management of immigration, guest workers, and students, as well as in promoting freer trade and investment, and in targeting aid funds. In a globalizing world, selective immigration policies may have important development impacts, as with immigration country policies toward students, and workers in particular occupations, such as nurses and computer programmers, as well as with mutual recognition of occupational licenses and professional credentials. Trade policies affecting migration are also important, such as trade in services and laws regulating contracts between firms in different countries that allow the entry of lower wage workers as part of the contract. opening channels for legal migration can deter irregular migration.