Two-layer particle filter for multiple target detection and tracking

This paper deals with the detection and tracking of an unknown number of targets using a Bayesian hierarchical model with target labels. To approximate the posterior probability density function, we develop a two-layer particle filter. One deals with track initiation, and the other with track maintenance. In addition, the parallel partition method is proposed to sample the states of the surviving targets

Baryogenesis after Hyperextended Inflation

We study a baryogenesis mechanism operating in the context of hyperextended inflation and making use of a coupling between the scalar field and a standard model global current, such as B or B-L. The method is efficient at temperatures at which these currents are not conserved due to some higher dimensional operator. The particle physics and cosmological phenomenology are discussed. We consider constraints stemming from nucleosynthesis and solar system experiments.Comment: 7 pages, 1 figure, uses RevTe

A Svarc-Milnor lemma for monoids acting by isometric embeddings

We continue our programme of extending key techniques from geometric group theory to semigroup theory, by studying monoids acting by isometric embeddings on spaces equipped with asymmetric, partially-defined distance functions. The canonical example of such an action is a cancellative monoid acting by translation on its Cayley graph. Our main result is an extension of the Svarc-Milnor Lemma to this setting.Comment: 11 page

Methodological and conceptual limitations in exercise addiction research

The aim of this brief analytical review is to highlight and disentangle research dilemmas in the field of exercise addiction. Research examining exercise addiction is primarily based on self-reports, obtained by questionnaires (incorporating psychometrically validated instruments), and interviews, which provide a range of risk scores rather than diagnosis. Survey methodology indicates that the prevalence of risk for exercise addiction is approximately 3 percent among the exercising population. Several studies have reported a substantially greater prevalence of risk for exercise addiction in elite athletes compared to those who exercise for leisure. However, elite athletes may assign a different interpretation to the assessment tools than leisure exercisers. The present paper examines the: 1) discrepancies in the classification of exercise addiction; 2) inconsistent reporting of exercise addiction prevalence; and 3) varied interpretation of exercise addiction diagnostic tools. It is concluded that there is the need for consistent terminology, to follow-up results derived from exercise addiction instruments with interviews, and to follow a theory-driven rationale in this area of research

Optimizing Green Supply Chain Management Strategies

Some business leaders in the manufacturing industry lack strategies to optimize green supply chain management strategies that increase profitability while reducing the carbon footprint. The lack of green supply chain strategies sub optimizes the use of resources business leaders use to meet their financial goals. The purpose of this qualitative single case study was to explore successful green supply chain strategies leaders used to increase profitability while reducing the carbon footprint. The participants were 7 business leaders in one manufacturing organization headquartered in Massachusetts who have sophisticated green supply chain strategies in place. The natural resource-based view theory was the conceptual framework for this study. Data were collected through semistructured interviews and organizational documents. Through thematic analysis, 3 key themes emerged: environmental management strategies, profit-increasing strategies, and governance strategies. The findings of this study might be of value to business leaders to reduce costs and create sustainable, competitive supply chains using responsible methods. The implications for social change include the potential for leaders to preserve finite natural resources for future generations and reduce the carbon footprint of manufacturing organizations

Planning, implementation and effectiveness in Indigenous health reform

The Planning, Implementation and Effectiveness in Indigenous Health Reform (PIE) project, funded by the Lowitja Institute and the Australian Research Council, carried out by the University of Melbourne, arose from concerns by Aboriginal and Torres Strait Islander people that despite the importance of participation and investment in collaborative governance, little research focused on capturing current practice and identifying best practice is being done. The advent of the National Indigenous Reform Agreement (NIRA) and the Indigenous Health National Partnership Agreements (IHNPAs) has led to further development/application of collaborative approaches to governance through committees and forums at national, State and regional levels. The activities associated with these committees and forums are referred to throughout this report as collaborative governance. This report focuses on building the evidence base around best practice based on case studies of collaborative governance in relation to the NIRA. A policy brief highlighting the policy recommendations of this report is also available