On classical and Bayesian order restricted inference for multiple exponential step stress model

In this article, we consider the multiple step stress model based on the cumulative exposure model assumption. Here, it is assumed that for a given stress level, the lifetime of the experimental units follows exponential distribution and the expected lifetime decreases as the stress level increases. We mainly focus on the order restricted inference of the unknown parameters of the lifetime distributions. First we consider the order restricted maximum likelihood estimators (MLEs) of the model parameters. It is well known that the order restricted MLEs cannot be obtained in explicit forms. We propose an algorithm that stops in finite number of steps and it provides the MLEs. We further consider the Bayes estimates and the associated credible intervals under the squared error loss function. Due to the absence of explicit form of the Bayes estimates, we propose to use the importance sampling technique to compute Bayes estimates. We provide an extensive simulation study in case of three stress levels mainly to see the performance of the proposed methods. Finally the analysis of one real data set has been provided for illustrative purposes.     

Locally efficient semiparametric estimators for a class of Poisson models with measurement error

The presence of measurement error may cause bias in parameter estimation and can lead to incorrect conclusions in data analyses. Despite a large body of literature on general measurement error problems, relatively few works exist to handle Poisson models. In this article we thoroughly study Poisson models with errors in covariates and propose consistent and locally efficient semiparametric estimators. We assess the finite sample performance of the estimators through extensive simulation studies and illustrate the proposed methodologies by analyzing data from the Stroke Recovery in Underserved Populations Study. The Canadian Journal of Statistics 47: 157–181; 2019 © 2019 Statistical Society of Canada     

Development and Spanish translation of the Weinberg Center Risk and Abuse Prevention Screen (WC-RAPS)

Barriers for enhanced detection, identification, and reporting of elder abuse include the paucity of appropriate, valid, easily administered screening tools. This article describes the qualitative methods used in the development of the Weinberg Center Risk and Abuse Prevention Screen (WC-RAPS), and of its Spanish version. Focus groups and cognitive interviews were instrumental in identifying problematic items, underscoring potential response errors, and informing about putative causes for divergent interpretations of item-intent. Seven of the 11 original items were modified, a double-barreled item was segregated into two, one item deleted, and three additional items included to create the final 13 WC-RAPS items. The multi-step approach implemented for the Spanish conversion evidenced deviation from the original intended meaning for one item. The readability for English and Spanish versions was also assessed. Screening for elder abuse, if implemented systematically can be instrumental in identifying unrecognized abuse and preventing reoccurrence.     

Women's desire for the kaleidoscope of authenticity,balance and challenge: A multi‐method study of female health workers’ careers

Improved health care and increased life expectancy have extended working lives and changed the nature of work for many women. The aim of this research is to explore women's kaleidoscope career intentions of authenticity, balance and challenge, and understand the impact of life roles on their career choices. The research comprises two studies. In Study 1, interviews with 14 female hospital pharmacists demonstrate how their desire to increase non‐work life roles while caring for ageing parents has influence over their career choices. In Study 2, a survey of 178 female direct care workers confirms life roles’ impact on their kaleidoscope career intentions. Findings demonstrate that different life roles strongly influence women's career choices in a number of ways, primarily their desire to increase their leisure and engagement with activities outside work. In later life, carer responsibilities play an influential role in female career choices, particularly those related to eldercare. Finally, kaleidoscope career intentions may be influenced by life roles. These findings have considerable implications for both the expansion of careers and gender theory, and development of public and business policies aimed at attracting and retaining human resources.     

Case-based methods and agent-based modelling: bridging the divide to leverage their combined strengths

Two leading camps for studying social complexity are case-based methods (CBM) and agent-based modelling (ABM). Despite the potential epistemological links between ‘cases’ and ‘agents,’ neither camp has leveraged their combined strengths. A bridge can be built, however, by drawing on Abbott’s insight that ‘agents are cases doing things’, Byrne’s suggestion that ‘cases are complex systems with agency’, and by viewing CBM and ABM within the broader trend towards computational modelling of cases. To demonstrate the utility of this bridge, we describe how CBM can utilise ABM to identify case-based trends; explore the interactions and collective behaviour of cases; and study different scenarios. We also describe how ABM can utilise CBM to identify agent types; construct agent behaviour rules; and link these to outcomes to calibrate and validate model results. To further demonstrate the bridge, we review a public health study that made initial steps in combining CBM and ABM.     

Identity boxes: using materials and metaphors to elicit experiences

This paper considers the use of identity boxes as a data collection method to elicit experiences. Participants were asked to respond to questions using objects to represent their answers. The rationale for using identity boxes was to allow for a more embodied, less textual approach. The identity boxes were then also used to create an artistic installation as one form of data analysis. The reflection section in this paper shows that the approach posed potential risks around the emotional vulnerability of participants, with participants experiencing the project as cathartic and therapeutic. Some participants struggled with the process of thinking through objects as difficult. Although using a less conventional approach to research led to deeper, richer reflections and thus relevant, interesting data, concerns were raised around relevance, generalisability, and more generally the evaluation of the research. The paper concludes with a reconsideration of the identity boxes as a method.     

我国自闭症康复机构干预方法及其影响因素研究

干预方法选择及应用状况影响自闭症康复机构的康复教育效果。本研究采用问卷调查法,调查36家康复机构实施的干预方法及干预过程中的辅助教具应用状况。结果发现:康复机构选择率最高的干预方法是感觉统合疗法,其次是已循证的干预方法,包括回合式教学、自然情境干预和视觉辅助等;康复机构不同干预课程的辅助教具应用相对统一,教师教学能力和经费需求影响康复机构选择干预方法的多样性。     

Coming Together: Factors that Connect Social Workers to Group Work Practice

Group work is an effective method to intervene with various populations in multiple settings. However, research has demonstrated that social workers are often not prepared for the realities of group work practice. In this study, the lens is turned on professional social workers that identify as group workers about the motivations and factors that contributed to their practice of group work. The goal of this research is to provide data and related insights that will enhance the preparation of social workers for the realities of contemporary group work practice. The study also identified factors that would enhance group work education in both the classroom and field education settings.     

Career transition as identity learning: an autoethnographic understanding of human resource development

This paper examines the phenomenon of career transitions in terms of learning using an autoethnographic story of our own career moves. In the contemporary world of globalized flexible employment, inter-organizational career moves are increasingly prevalent and the learning associated with such transitions needs to be better understood within human resource development (HRD). We show that the learning required in career transitions extends beyond the acquisition of new knowledge and the development of new skills to the appropriation of new identities. We overview identity theorizing and, adopting a social constructionist perspective, explain the concept of identity work to understand the nature of identity learning in career transitions. We then reflexively examine our autoethnographic methodology, proceed to tell the story of our career transitions, and then interpret this story in terms of identity learning. Conclusions are drawn showing how the learning associated with career transitions involves conscious and unconscious identity work to release an established way of being, cultivate a new and desired way of being, and to cope with the existential anxieties associated with transition. Significant implications for international HRD scholarship, policy, and practice are proposed.