Interview with Steven R. Winiger (FA 779)

Transcription of an interview with Steven R. Winiger by Sara E. Carrico about family farms and farming in south central Kentucky

Juniper from Ethiopia contains a large-scale precipitation signal

Most semiarid regions are facing an increasing scarcity of woody vegetation due mainly to anthropogenic deforestation aggravated by climate changes. However, there is insufficient information to reconstruct past changes in climate and to evaluate the implications of future climate changes on the vegetation. Tree-ring analysis is a powerful tool for studying tree age, population dynamics, growth behavior, and climate-growth relationships among tropical tree species and for gaining information about the environmental forces driving growth change as well as for developing proxies for climate reconstruction. Wood anatomical and dendrochronological methods were used on Juniperus procera trees from two Ethiopian highland forests to check (i) whether tree-ring series of juniper are cross-datable and hence suitable for building tree-ring chronologies, and if so, (ii) which climate factors mainly drive wood formation in juniper from this region. Visible growth layers of the juniper wood were shown to be annual rings. Tree-ring sequences could be cross-dated between trees growing at the same site and between trees growing at sites 350 km apart. Evidence was found that annual growth of junipers is mainly controlled by one climatic factor, precipitation. This strong precipitation influence proves the potential of African juniper chronologies for accurate climate reconstruction and points out the relevance of building a network of juniper chronologies across East Africa

Physicians\u27 perceptions of the chaplain\u27s role in critical care

https://place.asburyseminary.edu/ecommonsatsdissertations/1300/thumbnail.jp

A simulation of the Neolithic transition in Western Eurasia

Farming and herding were introduced to Europe from the Near East and Anatolia; there are, however, considerable arguments about the mechanisms of this transition. Were it people who moved and outplaced the indigenous hunter- gatherer groups or admixed with them? Or was it just material and information that moved-the Neolithic Package-consisting of domesticated plants and animals and the knowledge of its use? The latter process is commonly referred to as cultural diffusion and the former as demic diffusion. Despite continuous and partly combined efforts by archaeologists, anthropologists, linguists, paleontologists and geneticists a final resolution of the debate has not yet been reached. In the present contribution we interpret results from the Global Land Use and technological Evolution Simulator (GLUES), a mathematical model for regional sociocultural development embedded in the western Eurasian geoenvironmental context during the Holocene. We demonstrate that the model is able to realistically hindcast the expansion speed and the inhomogeneous space-time evolution of the transition to agropastoralism in Europe. GLUES, in contrast to models that do not resolve endogenous sociocultural dynamics, also describes and explains how and why the Neolithic advanced in stages. In the model analysis, we uncouple the mechanisms of migration and information exchange. We find that (1) an indigenous form of agropastoralism could well have arisen in certain Mediterranean landscapes, but not in Northern and Central Europe, where it depended on imported technology and material, (2) both demic diffusion by migration or cultural diffusion by trade may explain the western European transition equally well, (3) [...]Comment: Accepted Author Manuscript version accepted for publication in Journal of Archaeological Science. A definitive version will be subsequently published in the Journal of Archaological Scienc

Siberian Arctic black carbon sources constrained by model and observation

Black carbon (BC) in haze and deposited on snow and ice can have strong effects on the radiative balance of the Arctic. There is a geographic bias in Arctic BC studies toward the Atlantic sector, with lack of observational constraints for the extensive Russian Siberian Arctic, spanning nearly half of the circum-Arctic. Here, 2 y of observations at Tiksi (East Siberian Arctic) establish a strong seasonality in both BC concentrations (8 ng⋅m−3 to 302 ng⋅m−3) and dual-isotope–constrained sources (19 to 73% contribution from biomass burning). Comparisons between observations and a dispersion model, coupled to an anthropogenic emissions inventory and a fire emissions inventory, give mixed results. In the European Arctic, this model has proven to simulate BC concentrations and source contributions well. However, the model is less successful in reproducing BC concentrations and sources for the Russian Arctic. Using a Bayesian approach, we show that, in contrast to earlier studies, contributions from gas flaring (6%), power plants (9%), and open fires (12%) are relatively small, with the major sources instead being domestic (35%) and transport (38%). The observation-based evaluation of reported emissions identifies errors in spatial allocation of BC sources in the inventory and highlights the importance of improving emission distribution and source attribution, to develop reliable mitigation strategies for efficient reduction of BC impact on the Russian Arctic, one of the fastest-warming regions on Earth

Navigating challenges in telechaplaincy: A thematic analysis of an international conference

Telehealth-based care models are being widely adopted by primary care providers and large healthcare institutions. Drawing on data collected at an international conference on the theory and practice of telechaplaincy, this article identifies and discusses how chaplains navigate various telechaplaincy-related challenges. A thematic analysis identified 49 codes and 11 themes at the individual-, organizational- and population levels. Presenters reported facing novel and qualitatively distinct challenges spanning an array of telechaplains' professional activities, including the structure of work routines, the types of interventions used, the ways provider-patient connections are established and experienced, the strategic positioning of chaplains, their role in the model of care, and ultimately, the populations served. It is argued that, though telechaplaincy has gained prominence since the Covid-19 pandemic, the maintenance of professional standards in digital care settings is a systemic challenge related to long-term trends towards outpatient care

THE PROBLEM OF THE INDETERMINATE DEFENDANT IN TORT LAW IN EUROPE

The article discusses the problem of the indeterminate defendant in European tort law systems and in the projects aiming to unify tort law in Europe, such as Draft Common Frame of Reference and Principles of European Tort Law. The given issue relates to a situation where there is a damage caused by one factor, yet upon available evidence one may indicate a few potential factors which might have led to the damage, but it cannot be ascertained which factor was the actual cause of it. The problem is addressed with reference to two scenarios. First, when there is a limited and known number of persons acting tortiously, each of whom potentially might have led to the damage, but only one of them had actually caused it. Second, when it is certain that one tortfeasor from the undetermined group of tortfeasors caused damage to some of the injured persons from the group of the injured persons, but it cannot be established precisely which tortfeasor caused damage to precisely which injured person. In comparative law analysis, one may find various attempts to deal with the given issue, which come from the balance of ratios given to different solutions, as well as the legal possibilities or obstacles in national tort law systems. The main possibilities are: all-or-nothing approach, joint and several liability, and proportional liability. Those solutions are discussed in article in more detail with conclusion that the bold proposition of proportional liability presented in Principles of European Tort Law seems to be the most appropriate

Potential and limitations of plant virus epidemiology: lessons from the Potato virus Y pathosystem

Abstract Plant virus epidemiology provides powerful tools to investigate key factors that contribute to virus epidemics in agricultural crops. When successful, epidemiological approaches help to guide decisions regarding plant protection strategies. A recent example is epidemiological research on Potato virus Y (PVY) in Finnish seed potato production; this study led to the dentification of the main PVY vector species and helped to determine the timing of virus transmission. However, pathosystems rarely allow research to produce such clear-cut results. In fact, the notorious complexity of plant virus pathosystems, with multiple interactions between virus, vector, plant and environment, makes them often impenetrable even for advanced epidemiological models. This dynamic complexity questions the universal validity of employing epidemiological models that attempt to single out key factors in plant virus epidemics. Therefore, a complementary approach is needed that acknowledges the partly indeterministic nature of complex and evolving pathosystems. Such an approach is the use of diversity, imploying functionally complementary elements that can jointly buffer against environmental changes. I argue that for a wider range of plant production problems, the strategy of combining mechanistic and diversity-based approaches will provide potent and sustainable solutions. In addition, to translate insights from plant virus epidemiology into practice, improvements need to be made in knowledge transfer, both within the scientific community and between researchers and practitioners. Finally, moving towards more appropriate virus control strategies is only possible if economic interests of all stakeholders are in line with changing current practices