The analysis of incomplete data using stochastic covariates

In the development of many diseases there are often associated random variables which continuously reflect the progress of a subject towards the final expression of the disease (failure). At any given time these processes, which we call stochastic covariates, may provide information about the current hazard and the remaining time to failure. Likewise, in situations when the specific times of key prior events are not known, such as the time of onset of an occult tumour or the time of infection with HIV-1, it may be possible to identify a stochastic covariate which reveals, indirectly, when the event of interest occurred. The analysis of carcinogenicity trials which involve occult tumours is usually based on the time of death or sacrifice and an indicator of tumour presence for each animal in the experiment. However, the size of an occult tumour observed at the endpoint represents data concerning tumour development which may convey additional information concerning both the tumour incidence rate and the rate of death to which tumour-bearing animals are subject. We develop a stochastic model for tumour growth and suggest different ways in which the effect of this growth on the hazard of failure might be modelled. Using a combined model for tumour growth and additive competing risks of death, we show that if this tumour size information is used, assumptions concerning tumour lethality, the context of observation or multiple sacrifice times are no longer necessary in order to estimate the tumour incidence rate. Parametric estimation based on the method of maximum likelihood is outlined and is applied to simulated data from the combined model. The results of this limited study confirm that use of the stochastic covariate tumour size results in more precise estimation of the incidence rate for occult tumours.     

Gendering Global Governance

In this article I map out the major debates on global governance and the feminist critiques of the mainstream interventions in these debates. I argue that the shift from government to governance is a response to the needs of a gendered global capitalist economy and is shaped by struggles, both discursive and material, against the unfolding consequences of globalization. I suggest feminist interrogations of the concept, processes, practices and mechanisms of governance and the insights that develop from them should be centrally incorporated into critical revisionist and radical discourses of and against the concept of global governance. However, I also examine the challenges that the concept of global governance poses for feminist political practice, which are both of scholarship and of activism as feminists struggle to address the possibilities and politics of alternatives to the current regimes of governance. I conclude by suggesting that feminist political practice needs to focus on the politics of redistribution in the context of global governance.     

Preventing workplace aggression and violence--a role for occupational therapy

Workplace aggression and violence is the fastest growing societal concerns in USA. The review of literature indicates that violence is a substantial contributor to occupational injuries and death. Preventative strategies for minimizing the risk of workplace violence include, cash-handling policies, physical separation of workers from customers, environmental modifications; good lighting, security devices, escort services, and employee training. Studies also suggest that as a preventive measure, employers will attract and retain the best workers if high-risk behaviors are discouraged and appropriate behaviors are supported. Proactive strategies reduce stress, increase productivity, and enhance creativity. A role for occupational therapy practitioners in the prevention of workplace violence is proposed.     

The effects of religion on subjective aging in Singapore: An interreligious comparison

This interreligious comparison deals with Buddhist and Christian Chinese elderly Singaporeans. Based on the data gathered from in-depth interviews with five Buddhists and five Christians, this article explores how religion plays a role in the adjustment to the physical, social, and existential aging processes. It investigates the similarities and differences between Buddhist and Christian beliefs in terms of their effects on the subjective experience of aging. Findings indicate that religion can play an integrative role that facilitates adjustment to the aging process. Also, they suggest that though there are fundamental, irreducible differences in terms of religious beliefs and practices between Buddhism and Christianity, there are far less differences in the ways they impact on the integrative aging process. Some negative effects of religion on aging and some viewpoints about successful aging are presented in the discussion.     

Reflections on facilitating a participatory community self-evaluation

This paper is a reflective essay about our experience in conducting a participatory, community self-evaluation of a neighborhood revitalization effort in Milwaukee, Wisconsin. We took a controversial approach to evaluation by focusing on learning community dialogues as a vehicle for program evaluation. As we implemented our strategy, two sets of contradictions surfaced. The first points to the fundamental differences between conventional and constructivist research paradigms. The second centers around our focus on dialogue as a strategy for evaluation. In response to these contradictions we performed three complementary roles: program evaluator, process consultant, and learning facilitator. We are not implying that we performed an outstanding job in these roles. Rather, this article is our way of taking stock of what we learned about our practice as evaluators and how we may expand our repertoire of skills in the future.     

Networking across borders: the South Asian Research Network on Gender,Law and Governance

In this article I focus on a subaltern approach to knowledge networks by examining the process of setting up such a network, the South Asia Research Network (SARN) on Gender, Law and Governance. I reflect on the construction of discourses about ‘knowledge’ and ‘knowledge–makers’ and the issues of access that emerge as a result of these discourses and practices. I outline three aspects of a ‘politics of network(s)–ing’: the politics of process; the politics of outcome; and the politics of framing. I conclude that the borders of which we need to be aware are not just national borders but also borders of power. Knowledge networks are politically heterogeneous and for subaltern networks to have sustainable organizations as well as critical politics they need to be self–reflective and deliberative.     

Escalation: The Role of Problem Recognition and Cognitive Bias

Escalation of commitment to a failing course of action is an enduring problem that remains central to the study of managerial behavior. Prior research suggests that escalation behavior results when decision makers choose to ignore negative feedback concerning the viability of a previously chosen course of action. Previous work has also suggested that certain cognitive biases might promote escalation behavior, but there has been little attempt to explore how biases other than framing affect escalation. In this article, we explore the extent to which decision makers actually perceive negative feedback as indicative of a problem and how this influences their decision to escalate. Although problem recognition and cognitive biases have been intensively studied individually, little is known about their effect on escalation behavior. In this research, we construct and test an escalation decision model that incorporates both problem recognition and two cognitive biases: selective perception and illusion of control. Our results revealed a significant inverse relationship between problem recognition and escalation. Furthermore, selective perception and illusion of control were found to significantly affect both problem recognition and escalation. The implications of these findings for research and practice are discussed. To improve problem recognition and reduce the incidence of escalation, practicing managers should implement modern project management practices that can help to identify and highlight potential problems while guarding against these two key cognitive biases that promote the behavior.     

Competitive and Cooperative Positioning in Supply Chain Logistics Relationships*

Cooperative logistics relationships require the sharing of information, which must be enabled by the integration of disparate information systems across partners. In this article, we theorize business‐to‐business logistics relationships should be managed using cooperative and competitive postures. Based on data from 91 dyadic relationships using interorganizational information technology (IT), we find that performance gains accrue when parties share strategic information and customize IT; mutual trust enables IT customization and strategic‐information flows and equitable relationship‐specific investments positively impact IT customization, mutual trust, and performance. Among other scholarly and practical implications discussed, partners should compete on resources for IT customization and cooperate to share strategic information. Managers tend to think of relationships with firms as polar opposites and view them as entirely cooperative or entirely competitive. Our results support active balancing and understanding of both competitive and cooperative stances. Such an approach enables conditions for participation symmetry that yields greater performance gains.