Ecologists are challenged by the need to bridge and synthesize different approaches and theories to obtain a coherent understanding of ecosystems in a changing world. Both food web theory and regime shift theory shine light on mechanisms that confer stability to ecosystems, but from different angles. Empirical food web models are developed to analyze how equilibria in real multi-trophic ecosystems are shaped by species interactions, and often include linear functional response terms for simple estimation of interaction strengths from observations. Models (...) of regime shifts focus on qualitative changes of equilibrium points in a slowly changing environment, and typically include non-linear functional response terms. Currently, it is unclear how the stability of an empirical food web model, expressed as the rate of system recovery after a small perturbation, relates to the vulnerability of the ecosystem to collapse. Here, we conduct structural sensitivity analyses of classical consumer-resource models in equilibrium along an environmental gradient. Specifically, we change non-proportional interaction terms into proportional ones, while maintaining the equilibrium biomass densities and material flux rates, to analyze how alternative model formulations shape the stability properties of the equilibria. The results reveal no consistent relationship between the stability of the original models and the proportionalized versions, even though they describe the same biomass values and material flows. We use these findings to critically discuss whether stability analysis of observed equilibria by empirical food web models can provide insight into regime shift dynamics, and highlight the challenge of bridging alternative modelling approaches in ecology and beyond. (shrink)

The small sample properties of estimators and tests are frequently too complex to be useful or are unknown. Much econometric theory is therefore developed for very large or asymptotic samples where it is assumed that the behaviour of estimators and tests will adequately represent their properties in small samples. Refined asymptotic methods adopt an intermediate position by providing improved approximations to small sample behaviour using asymptotic expansions. Dedicated to the memory of Michael Magdalinos, whose work is a major contribution to (...) this area, this book contains chapters directly concerned with refined asymptotic methods. In addition, there are chapters focusing on new asymptotic results; the exploration through simulation of the small sample behaviour of estimators and tests in panel data models; and improvements in methodology. With contributions from leading econometricians, this collection will be essential reading for researchers and graduate students concerned with the use of asymptotic methods in econometric analysis. (shrink)

Biodiversity informatics produces global biodiversity knowledge through the collection and analysis of biodiversity data using informatics techniques. To do so, biodiversity informatics relies upon data accrual, standardization, transferability, openness, and “invisible” infrastructure. What biodiversity informatics mean to society, however, cannot be adequately understood without recognizing what organizes biodiversity data. Using insights from science and technology studies, we story the organizing “visions” behind the growth of biodiversity informatics infrastructures in Sweden—an early adopter of digital technologies and significant contributor to global biodiversity (...) data—through interviews, scientific literature, governmental reports and popular publications. This case story discloses the organizational formation of Swedish biodiversity informatics infrastructures from the 1970s to the present day, illustrating how situated perspectives or “visions” shaped the philosophies, directions and infrastructures of its biodiversity informatics communities. Specifically, visions related to scientific progress and species loss, their institutionalization, and the need to negotiate external interests from governmental organizations led to unequal development across multiple infrastructures that contribute differently to biodiversity knowledge. We argue that such difference highlights that the social and organizational hurdles for combining biodiversity data are just as significant as the technological challenges and that the seemingly inconsequential organizational aspects of its infrastructure shape what biodiversity data can be brought together, modelled and visualised. (shrink)

Management buyouts occur when incumbent managers (typically in association with third party investors) purchase all of a firm's outstanding stock and remove it from public trading. Prior ethical analyses of such activities have ignored the fact that large numbers of such buyouts return to public trading. The ethical implications of management buyout activity can be more fully understood if the entire buyout process is considered, beginning with the time the firm is taken private until it is returned to public trading. (...) Using a widely employed strategic management ethical framework developed by Hosmer (1994), this paper examines the ethics of the complete buyout cycle. (shrink)

Over the course of human life, health care decision‐making is often interdependent. In this article, we use “interdependence” to refer to patients’ engagement of nonclinicians—for example, family members or trusted friends—to reach health care decisions. Interdependence, we suggest, is common for patients in all stages of life, from early childhood to late adulthood. This view contrasts with the common bioethical assumption that medical decisions are either wholly independent or dependent and that independence or dependence is tightly coupled with a person's (...) decision‐making capacity. In this article, we array various approaches to decision‐making along a continuum of interdependence. An appreciation of this continuum can empower patients and elucidate ethical challenges that arise when people transition between different kinds of interdependence across the life span. (shrink)

Following neo-Aristotelians Alasdair MacIntyre and Martha Nussbaum, we claim that humans are story-telling animals who learn from the stories of diverse others. Moral agents use rational emotions, such as compassion which is our focus here, to imaginatively reconstruct others’ thoughts, feelings and goals. In turn, this imaginative reconstruction plays a crucial role in deliberating and discerning how to act. A body of literature has developed in support of the role narrative artworks (i.e. novels and films) can play in allowing us (...) the opportunity to engage imaginatively and sympathetically with diverse characters and scenarios in a safe protected space that is created by the fictional world. By practising what Nussbaum calls a ‘loving attitude’, her version of ethical attention, we can form virtuous habits that lead to phronesis (practical wisdom). In this paper, and taking compassion as an illustrative focus, we examine the ways that students’ moral education might usefully develop from engaging with narrative artworks through Philosophy for Children (P4C), where philosophy is a praxis, conducted in a classroom setting using a Community of Inquiry (CoI). We argue that narrative artworks provide useful stimulus material to engage students, generate student questions, and motivate philosophical dialogue and the formation of good habits which, in turn, supports the argument for philosophy to be taught in schools. (shrink)

This study examined the effects of emotional subject matter and descriptive style in short story excerpts on text (e.g. rich in meaning) and reader response-oriented (e.g. liking) ratings. Forty-eight subjects, including equal numbers of trained and novice male and female students, read two examples of each text twice and either generated or received interpretations between readings in a within-subjects design. In general, intellectual challenge slowed the pace of reading, whereas suspense-based arousal increased it. Emotional subject matter had a more powerful (...) effect than descriptive style on both cognitive (challenging, rich in meaning) and affective (expressive, personally relevant) scales and were read more quickly. Generating interpretations fostered subjective reactions to the Emotional excerpts (images), whereas Descriptive texts were less amenable to subjective responses. Consistent effects were also found for background and gender. As in everyday life, subject matter had a dominant effect in engaging a person's involvement. (shrink)

This study examined the relationship between unethical employee behavior and the dimensions of the Ethical Climate Questionnaire (ECQ). In order to explore the relationship between the dimensions of the ECQ and unethical behavior, the factor structure of five previously identified empirical models and the hypothesized nine-dimension model for the ECQ was tested with a confirmatory factor analysis. The analysis revealed that the hypothesized nine-dimension model provided as good or even better fit to the data than the five empirically derived models. (...) Therefore, the nine-dimensional model was used to examine the criterion-related validity of the ECQ. The results demonstrated that the nine ethical climate dimensions were correlated with some of the unethical behaviors examined in this study, but not others. However, the results clearly demonstrated that most of the ethical climate dimensions were significantly related to an aggregate measure of unethical behavior. It was suggested that these results might account for the differences in previous studies on the criterion-related validity of the ECQ. The results also replicated a previous report that the association between unethical behavior and ethical climate is stronger in organizations that do not have a code of ethics. Finally, a difference was observed in the ethical climates for organizations with a code of ethics and organizations without a code of ethics. (shrink)

Due to the COVID-19 pandemic, cities and states adopted social distancing, social isolation, or quarantine measurements to slow the transmission of the disease. Negative mental health outcomes including depression and anxiety have been associated with social distancing or social isolation. The purpose of the present study was to examine changes in psychological health and physical activity over an 8 week period under social distancing policies during the COVID-19 pandemic.Methods: Ninety individuals participated in this study. Qualifying participants answered questions using an (...) online survey regarding their loneliness, depressive symptoms, anxiety symptoms, mood state, and physical activity over four time points each lasting two weeks.Results: Symptoms of depression and state anxiety were increased in the population when compared to nationwide statistics from before the COVID-19 pandemic. Time point 2, ~1 month into social isolation, showed the most significant effects on mental health. During this time point, 100% of the participants showed symptoms of depression. There were no significant changes in physical activity over the 8 weeks. Loneliness, depressive symptoms, fatigue, and mood state were negatively associated with participation in physical activity. Vigor and state anxiety were associated with participation in physical activity.Conclusion: Social isolation and social distancing practices have had a negative effect on depression, anxiety, and mood over time. It appeared that depressive symptoms and total mood disturbance was elevated during time point two. Depressive symptoms were much higher than average compared to previous epidemiological data. Physical activity amount did not change over time but was associated with poor mental health. (shrink)

The COVID-19 pandemic has been devastating for people living with dementia (PLWD) and their caregivers. While prior research has documented these effects, it has not delved into their specific causes or how they are modified by contextual variation in caregiving circumstances.

As mariculture—the cultivation of aquatic organisms in marine environment—intensifies to meet the demands of sustainable blue growth and national policies, novel ethical challenges will arise. In the context of ethics, primary concerns over aquaculture and mariculture tend to stay within differing value-based perspectives focused on benefits to human and non-human subjects, specifically animal welfare and animal rights. Nonetheless, the burgeoning field of feminist blue humanities provides ethical considerations that extend beyond animal subjects (including humans), often because of its concerns with (...) new materialist, posthumanist, and other relations-based theories. This article examines feminist blue humanities and the contributions it may bring to understanding contemporary and future ethical challenges posed by mariculture and its intensification, especially the cultivation of low-trophic organisms. By offering an overview of feminist blue humanities, this article explores some of its particularities by drawing out three major ethical concerns facing contemporary mariculture, specifically material reconfigurations, radical alteration of the lives of low-trophic species through industrialization and increases in maricultural waste products. (shrink)

Previous research demonstrates that implicitly learned probability information can guide visual attention. We examined whether the probability of an object changing can be implicitly learned and then used to improve change detection performance. In a series of six experiments, participants completed 120–130 training change detection trials. In four of the experiments the object that changed color was the same shape on every trial. Participants were not explicitly aware of this change probability manipulation and change detection performance was not improved for (...) the trained shape versus untrained shapes. In two of the experiments, the object that changed color was always in the same general location . Although participants were not explicitly aware of the change probability, implicit knowledge of it did improve change detection performance in the trained location. These results indicate that improved change detection performance through implicitly learned change probability occurs for location but not shape. (shrink)

Participatory processes are often intended to encourage inclusion of multiple perspectives in defining management means and goals. However, ideas about the legitimacy of certain uses and users of the resources can often lead to exclusion from participation. In this way, participation can be transformed from a process of inclusion of various resource users to one of exclusion. Using a case study from a marine protected area in Loreto, Baja California Sur, Mexico, and drawing on work in deliberative democracy, I present (...) a typology of how individuals and groups can be excluded from participation. External exclusion includes non-invitation and other means for keeping participation from occurring. Internal exclusion refers to exclusionary events during participatory meetings. This analysis suggests that participation needs to be recognized as a valuable but easily manipulated tool in the design of projects like natural resource management. (shrink)

Coastal ecosystems are increasingly dominated by humans. Consequently, the human dimensions of sustainability science have become an integral part of emerging coastal governance and management practices. But if we are to avoid the harsh lessons of land management, coastal decision makers must recognize that humans are one of the more coastally dependent species in the biosphere. Management responses must therefore confront both the temporal urgency and the very real compromises and sacrifices that will be necessary to achieve a sustainable coastal (...) ecosystem, one that is economically feasible, socially just, and ecologically sound. (shrink)