On Statistical Models for d-Dimensional Stable Processes, and Some Generalizations

In statistical models where jumps of a d -dimensional stable process ( S _t ) _{t ≥0} are observed in windows with certain asymptotic properties, and where parameters appearing in the Levy measure of S are to be estimated, we have asymptotically efficient estimators. If Poisson random measure μ on (0, ∞) × ( R ^d \{0}) with intensity dt Λ( dx ) replaces the jump measure of S , where Λ is a ε-finite measure on R ^d \{0} admitting tail parameters in a suitable sense, we specify a notion of neighbourhood which allows to treat efficiency in statistical experiments of the second type by switching to accompanying sequences of the stable process type considered first.     

Matching Practice Skills with Client Problems

Abstract

Despite the increasing pressure to measure social work practice skills and relate those activities to client outcomes and treatment costs, relatively little social work research has been devoted to the development of social work process instruments. The recent development of the Practice Skills Inventory has provided practitioners with a useful tool for measuring the frequency with which practitioners employ specific categories of common social work intervention skills. However, it is important to demonstrate that social workers employ these practice skills differentially depending on clients' presenting problems. The current study of 281 experienced MSW practitioners demonstrates that they, indeed, emphasize supportive, therapeutic, case management and insight facilitation skills differentially depending on the problems experienced by their clients. Implications for practice and evaluation research are addressed.     

A Bayesian Approach to Model Interdependent Event Histories by Graphical Models

In event history analysis, the problem of modeling two interdependent processes is still not completely solved. In a frequentist framework, there are two most general approaches: the causal approach and the system approach. The recent growing interest in Bayesian statistics suggests some interesting works on survival models and event history analysis in a Bayesian perspective. In this work we present a possible solution for the analysis of dynamic interdependence by a Bayesian perspective in a graphical duration model framework, using marked point processes. Main results from the Bayesian approach and the comparison with the frequentist one are illustrated on a real example: the analysis of the dynamic relationship between fertility and female employment.     

Bayesian Survival Analysis in Proportional Hazard Models with Logistic Relative Risk

Abstract.  The traditional Cox proportional hazards regression model uses an exponential relative risk function. We argue that under various plausible scenarios, the relative risk part of the model should be bounded, suggesting also that the traditional model often might overdramatize the hazard rate assessment for individuals with unusual covariates. This motivates our working with proportional hazards models where the relative risk function takes a logistic form. We provide frequentist methods, based on the partial likelihood, and then go on to semiparametric Bayesian constructions. These involve a Beta process for the cumulative baseline hazard function and any prior with a density, for example that dictated by a Jeffreys-type argument, for the regression coefficients. The posterior is derived using machinery for Lévy processes, and a simulation recipe is devised for sampling from the posterior distribution of any quantity. Our methods are illustrated on real data. A Bernshtĕn–von Mises theorem is reached for our class of semiparametric priors, guaranteeing asymptotic normality of the posterior processes.     

Before and after science: Admissions process to Australian university social work courses

Abstract

Application processes to Australian university social work courses provide an explicit example through which to explore the influence of two schools of thought — social work as an art and as a science — on social work processes. Using admissions literature and questionnaire data provided by Australian schools of social work, this qualitative study explored the extent to which these perspectives are reflected in admissions processes. It was found that in terms of both qualities sought and techniques utilised, schools are operating essentially from a social work as science perspective, although there exists a desire to access qualities from an art perspective. This is perceived as being the result of institutional requirements, resource constraints, academic conventions and lack of knowledge about how to effectively assess the latter qualities. It is argued that social work needs to assert its unique perspectives in claiming a right to determine application processes for social work courses.     

Predictors of help-seeking for gambling disorder from the transtheoretical model perspective

Few gamblers seek treatment despite the severe negative impacts prolonged gambling can have. Research surrounding the predictors of help-seeking for problem gambling is often retrospective in design and inconsistent in findings. This study prospectively investigated whether transtheoretical model (TTM) constructs (readiness to change, ratings of temptations and self-efficacy, decisional balance and processes of change) have utility in predicting help-seeking among disordered gamblers. Community-recruited disordered gamblers (N = 136; 47.06% female; mean age = 44.5 years, SD = 12.8; 80.1% Caucasian) completed three assessments of TTM constructs, help-seeking behaviour, gambling problem severity, and other potential predictors of help-seeking. Informal help-seeking was common (6-month = 71.1%; 12-month = 79.6%); however, formal help-seeking was relatively infrequent (6-month = 22.7%; 12-month = 35.1%). Logistic regression demonstrated that gambling problem severity and the social liberation process of change (i.e. endorsing public awareness of gambling problems or non-gambling role models) consistently predicted formal help-seeking. Helping relationships and counter-conditioning (i.e. engaging in other activities as a replacement for gambling) processes of change uniquely predicted informal help-seeking at 12 months. Individuals most likely to seek formal help have greater problem severity and greater readiness to address problems. Seeking informal help is less predictable but more common.     

Law Struggles and Hegemonic Processes in Neoliberal India: Gramscian Reflections on Land Acquisition Legislation

Abstract

This article explores how, in the context of an unfolding process of neoliberalisation in India, new terrains of resistance are crystallising for subaltern groups seeking to contest the marginalising consequences of this process. We focus particularly on the emergence of India's ‘new rights agenda’ through a study of the making of the Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Bill, 2013. Conceiving of the emergence of the ‘new rights agenda’ as a hegemonic process, we decipher how law-making is a complex and contradictory practice seeking to negotiate a compromise equilibrium between, on the one hand, subaltern groups vulnerable to marginalisation and capable of mobilisation; and, on the other, dominant groups whose economic interests are linked to the exploitation of the spaces of accumulation recently pried open by market-oriented reforms. The negotiation of this equilibrium, we suggest, is ultimately intended to facilitate India's process of neoliberalisation.     

Access to Long‐Term Care: The True Cause of Hospital Congestion?

Much attention has been paid to lengthy wait times in emergency departments (EDs) and much research has sought to improve ED performance. However, ED congestion is often caused by the inability to move patients into the wards while the wards in turn are often congested primarily due to patients waiting for a bed in a long‐term care (LTC) facility. The scheduling of clients to LTC is a complex problem that is compounded by the variety of LTC beds (different facilities and room accommodations), the presence of client choice and the competing demands of the hospital and community populations. We present a Markov decision process (MDP) model that determines the required access in order for the census of patients waiting for LTC in the hospitals to remain below a given threshold. We further present a simulation model that incorporates both hospital and community demand for LTC in order to predict the impact of implementing the policy derived from the MDP on the community client wait times and to aid in capacity planning for the future. We test the MDP policy vs. current practice as well as against a number of other proposed policy changes.     

老年长期照护的风险属性与政府职能定位:国际的经验

老龄化在发达国家和包括中国在内的新兴国家愈演愈烈,养老、医疗和长期照护成为老年生活保障的重要支柱.不同福利模式的国家在老年长期照护制度构建上体现差异,“社会民主主义”和“法团主义”将老年长期照护看作是社会风险,建立了普及的或者广泛覆盖的财政或社会保险资金支持的长期照护制度;“自由主义”和“家庭主义”更强调长期照护的个人风险和家庭风险属性,财政支持较前两种弱.中国长期照护的制度化未成形,家庭照护面临供给不足,机构照护出现供给错位,失能老年的长期照护成为亟待解决的难题.通过对四种福利模式长期照护制度的比较,借鉴美国“补缺制”长期照护的经验,提高公共资金支持和公共机构服务的“瞄准度”,从需求最高但支付能力最弱的老年群体入手,化解最弱势老年群体的个人风险.