M any species face uncertain fates under climate change. Some will persist by shifting their range or adapting to local conditions, whereas others will be lost to extinction. Efforts to lessen the impacts of climate change on biodiversity depend on accurate forecasts. Most studies aiming to identify likely winners and losers consider species one at a time with a “climate envelope” approach that...

We study counterfeiting of currency in a search-theoretic model of monetary exchange. In contrast to Nosal and Wallace (2007), we establish that counterfeiting does not pose a threat to the existence of a monetary equilibrium; i.e., a monetary equilibrium exists irrespective of the cost of producing counterfeits, or the ease with which genuine money can be authenticated. However, the possibilit...

This study examines whether Human Resources (HR) certification is beneficial to HR professionals and organizations and explores the antecedents of HR certification. We surveyed 422 HR professionals from local chapters of the Society of Human Resources Management. The results indicated certified HR professionals received more pay (even after controlling for level of education and years of HR exp...

Since the 1980s, many have suggested we are in the midst of a massive extinction crisis, yet only 799 (0.04%) of the 1.9 million known recent species are recorded as extinct, questioning the reality of the crisis. This low figure is due to the fact that the status of very few invertebrates, which represent the bulk of biodiversity, have been evaluated. Here we show, based on extrapolation from ...

Bruce Rothschild1* and Virginia L. Naples2 1Department of Medicine, Northeast Ohio Medical University, Rootstown, OH 44272, USA and Carnegie Museum, Pittsburgh, PA 15273, USA 2Departmentof Biological Sciences, Northern Illinois University, DeKalb, IL 60115, USA *Corresponding author: Bruce Rothschild, Northeast Ohio Medical University, Rootstown, Carnegie Museum, Pittsburgh, PA 15213, USA, Tel:...

Fear responses can be eliminated through extinction, a procedure involving the presentation of fear-eliciting stimuli without aversive outcomes. Extinction is believed to be mediated by new inhibitory learning that acts to suppress fear expression without erasing the original memory trace. This hypothesis is supported mainly by behavioral data demonstrating that fear can recover following extin...

BACKGROUND The translation of healthcare research into practice is typically challenging and limited in effectiveness. The Theoretical Domains Framework (TDF) identifies 12 domains of behaviour determinants which can be used to understand the principles of behavioural change, a key factor influencing implementation. The Accelerated Chest pain Risk Evaluation (ACRE) project has successfully tran...

We reconsider the optimal population size problem in a continuous time economy populated by homogenous cohorts with a fixed life span. This assumption is combined with a linear production function in the labor input and standard rearing costs. A general social welfare function is specified, admitting the Millian and Benthamite cases as polar parameterizations. It is shown that if the lifetime i...

In this note we prove some bounds for the extinction time for the Ricci flow on certain 3-manifolds. Our interest in this comes from a question that Grisha Perelman asked the first author at a dinner in New York City on April 25th of 2003. His question was “what happens to the Ricci flow on the 3-sphere when one starts with an arbitrary metric? In particular, does the flow become extinct in fin...

psychological empowerment: a strategy for promotion of participatory decision-making, and organizational citizenship behavior (case study: urmia medical university)     hassani m [1] *, majidi j [2]     received: 21 aug, 2012 accepted: 21 nov, 2012     abstract   background & aims : the present study surveys the relationships between participatory decision- making, organizational citizenship be...