Inorganic carbon dominates total dissolved carbon concentrations and fluxes in British rivers: application of the THINCARB model – thermodynamic modelling of inorganic carbon in freshwaters

River water-quality studies rarely measure dissolved inorganic carbon (DIC) routinely, and there is a gap in our knowledge of the contributions of DIC to aquatic carbon fluxes and cycling processes. Here, we present the THINCARB model (THermodynamic modelling of INorganic CARBon), which uses widely-measured determinands (pH, alkalinity and temperature) to calculate DIC concentrations, speciation (bicarbonate, HCO3−; carbonate, CO32 −; and dissolved carbon dioxide, H2CO3⁎) and excess partial pressures of carbon dioxide (EpCO2) in freshwaters. If calcium concentration measurements are available, THINCARB also calculates calcite saturation. THINCARB was applied to the 39-year Harmonised Monitoring Scheme (HMS) dataset, encompassing all the major British rivers discharging to the coastal zone. Model outputs were combined with the HMS dissolved organic carbon (DOC) datasets, and with spatial land use, geology, digital elevation and hydrological datasets. We provide a first national-scale evaluation of: the spatial and temporal variability in DIC concentrations and fluxes in British rivers; the contributions of DIC and DOC to total dissolved carbon (TDC); and the contributions to DIC from HCO3− and CO32 − from weathering sources and H2CO3⁎ from microbial respiration. DIC accounted for > 50% of TDC concentrations in 87% of the HMS samples. In the seven largest British rivers, DIC accounted for an average of 80% of the TDC flux (ranging from 57% in the upland River Tay, to 91% in the lowland River Thames). DIC fluxes exceeded DOC fluxes, even under high-flow conditions, including in the Rivers Tay and Tweed, draining upland peaty catchments. Given that particulate organic carbon fluxes from UK rivers are consistently lower than DOC fluxes, DIC fluxes are therefore also the major source of total carbon fluxes to the coastal zone. These results demonstrate the importance of accounting for DIC concentrations and fluxes for quantifying carbon transfers from land, via rivers, to the coastal zone

The hegemony in masculinity

Most citations to "hegemonic masculinity" focus on gender ideals and men's attempts to justify domination. Few scholars have tested the theory that masculinity can be hegemonic in effect by gaining the overt consent of others to their domination. We specify this largely untested theory and use data from a pilot study of middle-age men for our demonstration of how to operationalize and recognize hegemony. We argue that scholars will find that effect at intersections of gender and other inequalities such as age. We show that, in their discussion of linked ideals of gender and age, three respondents mention domination of older men by younger men, and then both consent to that domination and accept personal responsibility for forestalling it through regimens of fitness, productivity, and health. We call for further research on the hegemony of masculinity via study of intersections of gender with such understudied inequities as age.Peer reviewe

Bringing Acquisition Reform into Focus

The response of our defense industrial base to major changes, such as the collapse of the former Soviet Union, emphasize the need to continue to improve the way the United States buys weapon systems. By looking through a historical lens, this paper addresses predicting the long-term success of acquisition practices and reform initiatives for the cost community. A literature review identifies acquisition reform legislation and initiatives since World War II. Looking at past acquisition reform and their long term impacts leads to the conclusion that acquisition reform efforts must be viewed skeptically. Given a dynamic environment, estimating costs may actually be made more difficult by reform initiatives. Improvement in the acquisition of weapon systems requires fundamental cange that emphasizes future implications, not just focusing on the present or past

Yamato: Bringing the Moon to the Earth ... Again

The Yamato mission to the lunar South Pole-Aitken Basin returns samples that enable dating of lunar formation and the lunar bombardment period. The design of the Yamato mission is based on a systems engineering process which takes an advanced consideration of cost and mission risk to give the mission a high probability of success

Should Mindfulness for Health Care Workers Go Virtual? A Mindfulness-Based Intervention Using Virtual Reality and Heart Rate Variability in the Emergency Department.

BACKGROUND: Research on burnout in the medical community has extensively studied the impact of mindfulness-based interventions (MBIs), which can include meditation, outdoor retreats, in-person didactics, and/or online wellness modules. However, in addition to these MBIs lacking objective, physiological measures for wellness, there has been little to no research involving virtual reality (VR) as an MBI modality for healthcare professionals in the United States. METHODS: A randomized controlled intervention trial was used to study the impact of VR-based guided-meditations in the form of brief paced-breathing exercises. Heart-rate variability (HRV), a biomarker for relaxation, was measured during each session. Thirty-two participants, consisting of primarily medical students, resident physicians, and registered nurses, were recruited to complete brief guided-meditations via a VR headset or a standalone mobile app in the emergency department (ED) on-call room of a large urban academic medical center. RESULTS: A total of 213 guided-meditation sessions were completed over the course of 4 weeks. Self-reported ratings of anxiety improved in both VR and mobile groups post-study. However, the VR group demonstrated higher intrasession HRV progress, indicating increased state of relaxation that also correlated with the number of sessions completed. Analysis by gender revealed disparity in HRV metrics between male and female VR participants. CONCLUSION/APPLICATION TO PRACTICE: VR-based guided meditations prove to be a feasible and accessible MBI that does not require extensive time commitment for healthcare workers. VR may be a more effective meditation platform compared with standalone mobile meditation apps, especially when used on a routine basis

Federal Ascendancy in Indian Territory, 1862-1863

Histor

Gene Function Classification Using Bayesian Models with Hierarchy-Based Priors

We investigate the application of hierarchical classification schemes to the annotation of gene function based on several characteristics of protein sequences including phylogenic descriptors, sequence based attributes, and predicted secondary structure. We discuss three Bayesian models and compare their performance in terms of predictive accuracy. These models are the ordinary multinomial logit (MNL) model, a hierarchical model based on a set of nested MNL models, and a MNL model with a prior that introduces correlations between the parameters for classes that are nearby in the hierarchy. We also provide a new scheme for combining different sources of information. We use these models to predict the functional class of Open Reading Frames (ORFs) from the E. coli genome. The results from all three models show substantial improvement over previous methods, which were based on the C5 algorithm. The MNL model using a prior based on the hierarchy outperforms both the non-hierarchical MNL model and the nested MNL model. In contrast to previous attempts at combining these sources of information, our approach results in a higher accuracy rate when compared to models that use each data source alone. Together, these results show that gene function can be predicted with higher accuracy than previously achieved, using Bayesian models that incorporate suitable prior information

A Unified Account of the Moral Standing to Blame

Recently, philosophers have turned their attention to the question, not when a given agent is blameworthy for what she does, but when a further agent has the moral standing to blame her for what she does. Philosophers have proposed at least four conditions on having “moral standing”: 1. One’s blame would not be “hypocritical”. 2. One is not oneself “involved in” the target agent’s wrongdoing. 3. One must be warranted in believing that the target is indeed blameworthy for the wrongdoing. 4. The target’s wrongdoing must some of “one’s business”. These conditions are often proposed as both conditions on one and the same thing, and as marking fundamentally different ways of “losing standing.” Here I call these claims into question. First, I claim that conditions (3) and (4) are simply conditions on different things than are conditions (1) and (2). Second, I argue that condition (2) reduces to condition (1): when “involvement” removes someone’s standing to blame, it does so only by indicating something further about that agent, viz., that he or she lacks commitment to the values that condemn the wrongdoer’s action. The result: after we clarify the nature of the non-hypocrisy condition, we will have a unified account of moral standing to blame. Issues also discussed: whether standing can ever be regained, the relationship between standing and our "moral fragility", the difference between mere inconsistency and hypocrisy, and whether a condition of standing might be derived from deeper facts about the "equality of persons"