Quantum Monte Carlo Simulation of the High-Pressure Molecular-Atomic Crossover in Fluid Hydrogen

A first-order liquid-liquid phase transition in high-pressure hydrogen between molecular and atomic fluid phases has been predicted in computer simulations using ab initio molecular dynamics approaches. However, experiments indicate that molecular dissociation may occur through a continuous crossover rather than a first-order transition. Here we study the nature of molecular dissociation in fluid hydrogen using an alternative simulation technique in which electronic correlation is computed within quantum Monte Carlo, the so-called Coupled Electron Ion Monte Carlo (CEIMC) method. We find no evidence for a first-order liquid-liquid phase transition.Comment: 4 pages, 5 figures; content changed; accepted for publication in Phys. Rev. Let

Letter from J. Dewing Co. M. S. D[ewing] to John Muir, 1887 Sep 3.

[letterhead]Sept 5 1887Mr. J Muir Martinz, Cal Dear Sir, We want more sketches right away for Passes -, send two or three times as many as are wanted and what are not used can be returned, might be put in a copy-book which can be sent by regristered mail - We want to get this out immediately Very trulyThe J. Dewing Company Street Please write again that little discription of yourself - the other has been mislaid M.S.D. s.01276 JmuirDay I might winter & summer this light may be seen silent and the [illegible] uproar y[illegible] & where notes is falling in spring & foam [silent?] interpreted of natures peace amid [hr?] the wildest displays of powerThis grand arc of color glowing with such invincible peacefulnss & mild shapely beauty into [illegible] & dark a chamber of shadows & amid the rush & war & bounding dashing of this thunder voices fall is one of the most unp[illegible] rights present offered in all this wonderfully valle

Implementing an e-learning Masters programme for Practice Development

Introduction – The need for more effective person centred care has been propositioned for a number of years (Dewar and Nolan 2013; McCormack, Dewing and McCance, 2011; Dewing, 2004) and Practice Development (PD) has been viewed as one way to embed this into organisational culture (Manley, Sanders, Cardiff and Webster, 2011). More recently multiple policy reports echo this call (Age UK, 2012; Willis Commission on Nursing, 2012; Parliamentary Health Service Ombudsman, 2011). Joint work between the Department of Nursing and England Centre for Practice Development at Canterbury Christ Church University has validated an innovative Masters level programme in Practice Development, utilising workplace and e-learning approaches to facilitate creativity in the work setting. Aim: This paper will briefly describe the programme and then explore the experiences and challenges of implementing a work based and e-learning Masters Practice Development and Innovation programme. Approach: Practice Development is built on the key principles of person-centredness, shared values and vision, transforming individuals and culture through active learning, facilitation and engagement (McCormack, Manley, Titchen 2013). Thus, the approach to the Masters programme reflects these principles and utilises facilitation methods to enable practice development to transform the learner and work setting. As part of this process we, as lecturers, have been developing our own values and beliefs and expanded our knowledge and skills so that we can positively impact on the learner experience and work as learning partners. The programme is, therefore, evolving to embody these principles and enable learners to incorporate them into practice. The programme is built around ten core Practice Development/Innovation principles and the process of Active Learning, which will be expanded on in the presentation. Our vision is to make this programme accessible to regional, national and international learners. The work-based and e-learning approaches make this achievable but bring challenges to ensure that the programme reflects the principles of Practice Development from a distance. This is further complicated by facilitating a range of learners from diverse clinical areas, experiences and cultures who have often been exposed to traditional forms of learning. Thus, facilitating the learners to engage with the material, and incorporate it into their own practice setting, has led to careful consideration of materials for the learners to access. As the programme is progressing areas are emerging that need to be thoughtfully considered and addressed to ensure development of learning. Considerations: Initial themes starting to emerge are: increasing lecturer knowledge and skills around both Practice Development and different tools for e-learning, learners previous experience of facilitation and willingness to take responsibility for their own learning, challenges of promoting active learning approaches online , enabling achievement of Masters level learning outcomes with a distance approach, new ways of working for individuals plus the organisational views around supporting learners in practice. These require both lecturers and learners to be motivated to learn and devote time to engage with material and processes. However, it also requires lecturers and learners to make choices and reflect on activities to assess the relevance and usefulness to their situation. The programme encourages learners to be creative and examine issues differently which takes time to engage with and progress. Conclusion: Evaluation of this programme is in its infancy. A key learning point is that transforming practice through Practice Development and innovation in the workplace also involves transforming University views on learning, engagement and creativity

Coupled Electron Ion Monte Carlo Calculations of Dense Metallic Hydrogen

We present a new Monte Carlo method which couples Path Integral for finite temperature protons with Quantum Monte Carlo for ground state electrons, and we apply it to metallic hydrogen for pressures beyond molecular dissociation. We report data for the equation of state for temperatures across the melting of the proton crystal. Our data exhibit more structure and higher melting temperatures of the proton crystal than Car-Parrinello Molecular Dynamics results. This method fills the gap between high temperature electron-proton Path Integral and ground state Diffusion Monte Carlo methods