Dispersion corrections in graphenic systems: a simple and effective model of binding

We combine high-level theoretical and \emph{ab initio} understanding of graphite to develop a simple, parametrised force-field model of interlayer binding in graphite, including the difficult non-pairwise-additive coupled-fluctuation dispersion interactions. The model is given as a simple additive correction to standard density functional theory (DFT) calculations, of form $\Delta U(D)=f(D)[U^{vdW}(D)-U^{DFT}(D)]$ where $D$ is the interlayer distance. The functions are parametrised by matching contact properties, and long-range dispersion to known values, and the model is found to accurately match high-level \emph{ab initio} results for graphite across a wide range of $D$ values. We employ the correction on the difficult bigraphene binding and graphite exfoliation problems, as well as lithium intercalated graphite LiC$_6$. We predict the binding energy of bigraphene to be 0.27 J/m^2, and the exfoliation energy of graphite to be 0.31 J/m^2, respectively slightly less and slightly more than the bulk layer binding energy 0.295 J/m^2/layer. Material properties of LiC$_6$ are found to be essentially unchanged compared to the local density approximation. This is appropriate in view of the relative unimportance of dispersion interactions for LiC$_6$ layer binding

Berger, Samuel D. Sandy oral history interview

Samuel R. “Sandy” Berger is a native of New York, a graduate of Cornell University (1967) and Harvard Law School (1971). He served as a special assistant to Mayor John Lindsay of New York, legislative assistant to Senator Harold Hughes (D-IA), deputy director of the Policy Planning Staff, Department of State (1977-1980), deputy national security advisor (1993-1996) and national security advisor (1997-2000). He is now president of Stonebridge, an international affairs consulting firm

The Problem of Competition Among Domestic Trunk Airlines - Part I

Cet article propose une analyse des processus d’émergence et de diffusion des paiements pour services environnementaux (PSE) au Cambodge à partir de la théorie du changement institutionnel de John R. Commons. Nous montrons que dans un contexte de conflits d’intérêts autour de l’utilisation des ressources, la mise en place ou le blocage de certains projets PSE correspondent à des stratégies mises en oeuvre par les organisations non gouvernementales de conservation et le Gouvernement pour orienter la définition des règles encadrant la gestion des écosystèmes. Au final, le développement des PSE au Cambodge n’a pas permis une modification profonde de ces règles, le déséquilibre des rapports de force entre les différents acteurs impliqués ayant conduit au maintien du statu quo, au détriment des communautés locales

A Comparative Evaluation of Gait between Children with Autism and Typically Developing Matched Controls

Anecdotal reports suggest children with autism spectrum disorder (ASD) ambulate differently than peers with typical development (TD). Little empirical evidence supports these reports. Children with ASD exhibit delayed motor skills, and it is important to determine whether or not motor movement deficits exist during walking. The purpose of the study was to perform a comprehensive lower-extremity gait analysis between children (aged 5–12 years) with ASD and age- and gender-matched-samples with TD. Gait parameters were normalized to 101 data points and the gait cycle was divided into seven sub-phases. The Model Statistic procedure was used to test for statistical significance between matched-pairs throughout the entire gait cycle for each parameter. When collapsed across all participants, children with ASD exhibited large numbers of significant differences (p \u3c 0.05) throughout the gait cycle in hip, knee, and ankle joint positions as well as vertical and anterior/posterior ground reaction forces. Children with ASD exhibited unique differences throughout the gait cycle, which supports current literature on the heterogeneity of the disorder. The present work supports recent findings that motor movement differences may be a core symptom of ASD. Thus, individuals may benefit from therapeutic movement interventions that follow precision medicine guidelines by accounting for individual characteristics, given the unique movement differences observed

Gallman revisited: Blacksmithing and American manufacturing, 1850-1870

In nineteenth-century America, blacksmiths were a fixture in every village, town, and city, producing a diverse range of products from axes to wheels and services from repairs to horse shoeing. In constructing his historical GNP accounts, Gallman opted to exclude these “jacks-of-all-trades” from the manufacturing sector, classifying them instead as part of the service sector. However, using establishment-level data for blacksmiths from the federal censuses of manufactures for 1850, 1860, and 1870, we re-examine that choice and show that blacksmiths were an important, if declining, source of manufactured goods. Moreover, as quintessential artisan shops, a close analysis of their structure and operation helps resolve several key puzzles regarding industrialization in the nineteenth century. As “jacks-of-all-trades,” they were generally masters of none (except for their service activities). Moreover, the historical record reveals that several of those who managed to achieve mastery moved on to become specialized manufacturers of that specific product. Such specialized producers had higher productivity levels than those calling themselves blacksmiths producing the same goods, explaining changes in industry mix and the decline of the blacksmith in manufacturing.Accepted manuscrip

Christina Nelson - Applying John Hagan’s Power-Control Theory to Gender Differences with Drug Abuse

Previous work has indicated that young men and women engage in drug use in different ways and for different reasons. This research tests Hagan’s Power-Control Theory to examine gender differences in adolescent drug use. This study analyzes randomly selected subsample of data from the National Survey on Drug Use and Health (NSDUH). Questions that led this study were: Do patterns of drug abuse differ by gender? To what extent can Hagan’s Power-Control Theory explain this? Control variables looked at gender, age and race. All adolescents were from the ages of 12-17. Dependent variables looked at drug use (ever, yearly, monthly). Drugs examined were: marijuana, cocaine, crack, heroin, methamphetamines, pain relievers (not medically obtained), and any illicit drug. Instrumental variables looked at parental monitoring in order to apply Power-Control Theory. Employing bivariate tests of association, this study finds that there is inconsistent support between certain types of adolescent drug use and Power-Control Theory. There were no gender differences in drug use. Variables that proved to be statistically significant were: Parents Check if Homework is Done, Parents Limit Time with Friends, and Amount Adolescents Argue with Parents.https://epublications.marquette.edu/mcnair_2014/1006/thumbnail.jp

Forelimb muscle and joint actions in Archosauria: insights from Crocodylus johnstoni (Pseudosuchia) and Mussaurus patagonicus (Sauropodomorpha)

Many of the major locomotor transitions during the evolution of Archosauria, the lineage including crocodiles and birds as well as extinct Dinosauria, were shifts from quadrupedalism to bipedalism (and vice versa). Those occurred within a continuum between more sprawling and erect modes of locomotion and involved drastic changes of limb anatomy and function in several lineages, including sauropodomorph dinosaurs. We present biomechanical computer models of two locomotor extremes within Archosauria in an analysis of joint ranges of motion and the moment arms of the major forelimb muscles in order to quantify biomechanical differences between more sprawling, pseudosuchian (represented the crocodile Crocodylus johnstoni) and more erect, dinosaurian (represented by the sauropodomorph Mussaurus patagonicus) modes of forelimb function. We compare these two locomotor extremes in terms of the reconstructed musculoskeletal anatomy, ranges of motion of the forelimb joints and the moment arm patterns of muscles across those ranges of joint motion. We reconstructed the three-dimensional paths of 30 muscles acting around the shoulder, elbow and wrist joints. We explicitly evaluate how forelimb joint mobility and muscle actions may have changed with postural and anatomical alterations from basal archosaurs to early sauropodomorphs. We thus evaluate in which ways forelimb posture was correlated with muscle leverage, and how such differences fit into a broader evolutionary context (i.e. transition from sprawling quadrupedalism to erect bipedalism and then shifting to graviportal quadrupedalism). Our analysis reveals major differences of muscle actions between the more sprawling and erect models at the shoulder joint. These differences are related not only to the articular surfaces but also to the orientation of the scapula, in which extension/flexion movements in Crocodylus (e.g. protraction of the humerus) correspond to elevation/depression in Mussaurus. Muscle action is highly influenced by limb posture, more so than morphology. Habitual quadrupedalism in Mussaurus is not supported by our analysis of joint range of motion, which indicates that glenohumeral protraction was severely restricted. Additionally, some active pronation of the manus may have been possible in Mussaurus, allowing semi-pronation by a rearranging of the whole antebrachium (not the radius against the ulna, as previously thought) via long-axis rotation at the elbow joint. However, the muscles acting around this joint to actively pronate it may have been too weak to drive or maintain such orientations as opposed to a neutral position in between pronation and supination. Regardless, the origin of quadrupedalism in Sauropoda is not only linked to manus pronation but also to multiple shifts of forelimb morphology, allowing greater flexion movements of the glenohumeral joint and a more columnar forelimb posture

Factors associated with statin treatment for the primary prevention of cardiovascular disease in people within 2 years following diagnosis of diabetes in Scotland, 2006-2008

© 2014 The Authors. Diabetic Medicine published by John Wiley & Sons Ltd on behalf of Diabetes UK. Funded by Scottish Health Informatics Programme. Grant Number: WT086113 Scottish Government Scottish Diabetes Research NetworkPeer reviewedPublisher PD

Systematic case study research : a practice-oriented introduction to building an evidence base for counselling and psychotherapy

Background: Historically, clinical case studies have played a central role in counselling and psychotherapy training and practice, by allowing practitioners to learn about ideas and interventions being developed by colleagues. In recent years, the development of methods for systematic collection and analysis of case data has made it possible for case study research to begin to make a contribution to the evidence base for therapy policy and practice. Aim: This paper provides an overview of the characteristics of rigorous case study research, introduces a set of studies that exemplify these principles, and reviews the relevance of systematic case study inquiry for policy, practice and training. Conclusions: If case study research is to fulfil its potential as a source of research-based knowledge, it is essential for practitioners to publish more systematic case studies that document the range and scope of everyday therapeutic practice. It is also necessary to carry out further research into a variety of methodological issues associated with single-case inquiry, as a means of further developing this approach to practice-based research