548 research outputs found
Dostoevsky, Raskolnikov, and Freedom in Crime and Punishment
An analysis of the character of Raskolnikov in Dostoevsky\u27s Crime and Punishment and his journey towards a truer understanding of freedom. This paper comments on \u27freedom\u27 as understood by St. Thomas Aquinas and Aristotle, and applies this view of freedom to the characters of Raskolnikov, Sonya, Svidrigailov and Porfiry. The paper shows how the Thomistic-Aristotelian view of freedom is prevalent in this work by Dostoevsky
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Evaluation Approach for an Effective Blockchain Implementation in an Accounting Environment
Blockchain has the potential to revolutionize accounting transactions in the same way the Internet revolutionized the collection and dissemination of information. Nonetheless, like the Internet, blockchain technology is a double-edged sword offering tremendous benefits but also drawbacks. The literature points to inadequacies in blockchain implementations, particularly when evaluating and selecting controls to help ensure an effective blockchain implementation in organizations. This research develops an approach that not only addresses the inadequacies identified in the literature, but also prompts organizations to a more precise evaluation and selection of controls to achieve effective blockchain implementation. The approach uses Desirability Functions to quantify the desirability of each control after considering its benefits and drawbacks, providing organizations with an objective metric when assessing and selecting controls. Through a case assessment exercise, the approach proved successful in providing accurate evaluation, ranking, and potential selection of controls for organizations to consider when implementing blockchain accounting technology
Alfalfa water productivity and yield gaps in the U.S. central Great Plains
Context: Yield gap (Yg) analyses using farmer-reported yield and management data have been performed for a number of annual grain crops, but it lacks for perennial forages. The U.S. accounts for 21 % of the global alfalfa production with a large rainfed area located in the central Great Plains, serving as an interesting case-study for Yg in perennial forages. Most existing alfalfa Yg analyses quantified the magnitude of the Yg but failed to identify associated management practices to reduce it. Challenging this analysis, a systematic benchmark for alfalfa water productivity [WP, kg dry matter per mm evapotranspiration (ETc)] that allows for the quantification of Yg in farmer fields does not exist.
Objectives: Our objectives were to (i) benchmark alfalfa WP, (ii) quantify Yg in alfalfa farmer fields, and (iii) identify management opportunities to improve alfalfa yield.
Methods: We conducted a systematic review of literature and compiled a database on alfalfa yield and ETc (n = 68 papers and 1027 treatment means) from which a WP boundary function was derived. We collected management and yield data from 394 commercial rainfed alfalfa fields during 2016–2019 in central Kansas. We then used satellite imagery to define the growing season (and corresponding water supply) for each field. The boundary function was then used to calculate Yg of each field, and conditional inference trees (CIT) explored the impact of management practices associated with increased yield.
Results: Our boundary function suggested an alfalfa WP of 34 kg ha-1 mm-1. Farmer-reported yield ranged from 0.9 to 19.0 Mg ha-1, averaging 7.6 Mg ha-1. Alfalfa water-limited yield potential (Yw) ranged from 11.1 to 23.2 Mg ha-1, resulting in an average yield gap of 54–60 % of Yw. Row spacing, seeding rates, and management of phosphorus fertilizer were major agronomic practices explaining alfalfa yields in farmer fields, followed by surrogate variables as sowing season, stand age, and soil pH.
Conclusions: Our study provided the first systematic analysis estimating attainable alfalfa WP as function of ETc, suggesting that large alfalfa Yg exist in the U.S. central Great Plains. We also identified key agronomic practices associated with increased alfalfa yield.
Significance: The WP here derived can be used for future studies aiming at quantifying alfalfa Yg across the globe. This was an initial step in quantifying Yg and its associated causes at farmer fields, and we highlight limitations and future directions for perennial forages yield gap analyses
Electronic structure of overstretched DNA
Minuscule molecular forces can transform DNA into a structure that is
elongated by more than half its original length. We demonstrate that this
pronounced conformational transition is of relevance to ongoing experimental
and theoretical efforts to characterize the conducting properties of DNA wires.
We present quantum mechanical calculations for acidic, dry, poly(CG).poly(CG)
DNA which has undergone elongation of up to 90 % relative to its natural
length, along with a method for visualizing the effects of stretching on the
electronic eigenstates. We find that overstretching leads to a drastic drop of
the hopping matrix elements between localized occupied electronic states
suggesting a dramatic decrease in the conductivity through holes.Comment: 4 page
Social Justice and Technocracy: Tracing the Narratives of Inclusive Education in the United States
Over the past two decades, the percentage of American students with disabilities educated in general classrooms with their nondisabled peers has risen by approximately fifty percent. This gradual but steady policy shift has been driven by two distinct narratives of organisational change. The social justice narrative espouses principles of equality and caring across human differences. The narrative of technocracy creates top-down, administrative pressure through hierarchical systems based on quantitative performance data. This article examines these two primary policy narratives of inclusive education in the United States, exploring the conceptual features of each and initiating an analysis of their application in the public schools
A charter to improve patient care in severe asthma
Severe asthma is a subtype of asthma that is difficult to treat and control. By conservative estimates, severe asthma affects approximately 5-10% of patients with asthma worldwide. Severe asthma impairs patients' health-related quality of life, and patients are at risk of life-threatening asthma attacks. Severe asthma also accounts for the majority of health care expenditures associated with asthma. Guidelines recommend that patients with severe asthma be referred to a specialist respiratory team for correct diagnosis and expert management. This is particularly important to ensure that they have access to newly available biologic treatments. However, many patients with severe asthma can suffer multiple asthma attacks and wait several years before they are referred for specialist care. As global patient advocates, we believe it is essential to raise awareness and understanding for patients, caregivers, health care professionals, and the public about the substantial impact of severe asthma and to create opportunities for improving patient care. Patients should be empowered to live a life free of symptoms and the adverse effects of traditional medications (e.g., oral corticosteroids), reducing hospital visits and emergency care, the loss of school and work days, and the constraints placed on their daily lives. Here we provide a Patient Charter for severe asthma, consisting of six core principles, to mobilize national governments, health care providers, payer policymakers, lung health industry partners, and patients/caregivers to address the unmet need and burden in severe asthma and ultimately work together to deliver meaningful improvements in care.Funding for this study, the article processing charges, and the open access charge was provided by AstraZeneca
Work productivity in rhinitis using cell phones:The MASK pilot study
Allergic rhinitis often impairs social life and performance. The aim of this cross-sectional study was to use cell phone data to assess the impact on work productivity of uncontrolled rhinitis assessed by visual analogue scale (VAS). A mobile phone app (Allergy Diary, Google Play Store and Apple App Store) collects data from daily visual analogue scales (VAS) for overall allergic symptoms (VAS-global measured), nasal (VAS-nasal), ocular (VAS-ocular) and asthma symptoms (VAS-asthma) as well as work (VAS-work). A combined nasal-ocular score is calculated. The Allergy Diary is available in 21 countries. The app includes the Work Productivity and Activity Impairment Allergic Specific Questionnaire (WPAI: AS) in six EU countries. All consecutive users who completed the VAS-work from 1 June to 31 October 2016 were included in the study. A total of 1136 users filled in 5818 days of VAS-work. Symptoms of allergic rhinitis were controlled (VAS-global <20) in approximately 60% of the days. In users with uncontrolled rhinitis, approximately 90% had some work impairment and over 50% had severe work impairment (VAS-work >50). There was a significant correlation between VAS-global calculated and VAS-work (Rho=0.83, P <0.00001, Spearman's rank test). In 144 users, there was a significant correlation between VAS-work and WPAI: AS (Rho=0.53, P <0.0001). This pilot study provides not only proof-of-concept data on the work impairment collected with the app but also data on the app itself, especially the distribution of responses for the VAS. This supports the interpretation that persons with rhinitis report both the presence and the absence of symptom
Exploring PERMA in spectator sport: Applying positive psychology to examine the individual-level benefits of sport consumption
Sport spectating provides numerous benefits for sport organisations and individuals. In this paper we use a positive psychology approach to examine the individual-level benefits of sport consumption in order to investigate the activation of five domains of well-being: positive emotions, engagement, relationships, meaning, and accomplishment (PERMA). Using a two-study panel research design, we collected qualitative data from a sample of Australian Rules Football consumers. In the first study, we explored how the PERMA domains were activated during the season. Study two included a follow-up interview with eight initial respondents in the off-season. We found evidence of four PERMA domains that were activated in the sport spectator context by a variety of consumer experiences. The emergence of these domains in both studies suggests sport marketers would benefit from actions including: creating more social spaces within their stadiums, hosting regular off-season events, and creating social-media based competitions which promote fan engagement and interactions throughout the calendar year
The Long-Term Consequences of the Global 1918 Influenza Pandemic: A Systematic Analysis of 117 IPUMS International Census Data Sets
Age-Dependent Targeting of Protein Phosphatase 1 to Ca2+/Calmodulin-Dependent Protein Kinase II by Spinophilin in Mouse Striatum
Mechanisms underlying age-dependent changes of dendritic spines on striatal medium spiny neurons are poorly understood. Spinophilin is an F-actin- and protein phosphatase 1 (PP1)-binding protein that targets PP1 to multiple downstream effectors to modulate dendritic spine morphology and function. We found that calcium/calmodulin-dependent protein kinase II (CaMKII) directly and indirectly associates with N- and C-terminal domains of spinophilin, but F-actin can displace CaMKII from the N-terminal domain. Spinophilin co-localizes PP1 with CaMKII on the F-actin cytoskeleton in heterologous cells, and spinophilin co-localizes with synaptic CaMKII in neuronal cultures. Thr286 autophosphorylation enhances the binding of CaMKII to spinophilin in vitro and in vivo. Although there is no change in total levels of Thr286 autophosphorylation, maturation from postnatal day 21 into adulthood robustly enhances the levels of CaMKII that co-immunoprecipitate with spinophilin from mouse striatal extracts. Moreover, N- and C-terminal domain fragments of spinophilin bind more CaMKII from adult vs. postnatal day 21 striatal lysates. Total levels of other proteins that interact with C-terminal domains of spinophilin decrease during maturation, perhaps reducing competition for CaMKII binding to the C-terminal domain. In contrast, total levels of α-internexin and binding of α-internexin to the spinophilin N-terminal domain increases with maturation, perhaps bridging an indirect interaction with CaMKII. Moreover, there is an increase in the levels of myosin Va, α-internexin, spinophilin, and PP1 in striatal CaMKII immune complexes isolated from adult and aged mice compared to those from postnatal day 21. These changes in spinophilin/CaMKII interactomes may contribute to changes in striatal dendritic spine density, morphology, and function during normal postnatal maturation and aging
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