Financial Risks of Investments in Coal

Analyzes the regulatory, commodity, and construction risks of investing in coal mining and coal-fired power plants. Examines industry analysts' consensus on viable alternatives to coal, including natural gas, solar, wind, and energy efficiency

Student perceptions of the ‘best’ feedback practices: An evaluation of student-led teaching award nominations at a higher education institution

There is great emphasis in contemporary higher education to address the seemingly consistent issue of what students perceive to be good assessment feedback practice. Improving this aspect of the student experience continues to elude higher education institutions, as reflected in the nationally lower than average scores in the United Kingdom’s annual National Student Survey questions on prompt feedback, which makes this a timely area for further investigation and discussion. To investigate student perceptions of feedback, this article examines the qualitative data from three years of student-led teaching awards nominations at the University of Winchester for the category "Best Lecturer for Constructive and Efficient Feedback." From this study, new revelations with regard to the student perception of the “best” lecturers’ feedback practices have come to light, including terminology, language, and emphasis on email turnaround, rather than the actual format of the feedback itself (such as handwritten, audio, e-submission). Key findings include that students focus on the quality of the linguistic elements of feedback rather than the mode of delivery. The study also finds that students are often perceiving feedback in a literal sense, with many staff nominated based on their informal email responses rather than the formal assignment feedback often attributed to this question in the National Student Survey. In order to tease out the repetitive emerging themes for which practices students are perceiving to be “good” feedback, this article outlines the findings of this study, including the methodology and nomination process of the student-led teaching awards at the University of Winchester

Accelerating inference for stochastic kinetic models

Stochastic kinetic models (SKMs) are increasingly used to account for the inherent stochasticity exhibited by interacting populations of species in areas such as epidemiology, population ecology and systems biology. Species numbers are modelled using a continuous-time stochastic process, and, depending on the application area of interest, this will typically take the form of a Markov jump process or an It\^o diffusion process. Widespread use of these models is typically precluded by their computational complexity. In particular, performing exact fully Bayesian inference in either modelling framework is challenging due to the intractability of the observed data likelihood, necessitating the use of computationally intensive techniques such as particle Markov chain Monte Carlo (particle MCMC). It is proposed to increase the computational and statistical efficiency of this approach by leveraging the tractability of an inexpensive surrogate derived directly from either the jump or diffusion process. The surrogate is used in three ways: in the design of a gradient-based parameter proposal, to construct an appropriate bridge and in the first stage of a delayed-acceptance step. The resulting approach, which exactly targets the posterior of interest, offers substantial gains in efficiency over a standard particle MCMC implementation.Comment: 29 page

Inclusion of the second Umkehr in the conventional Umkehr retrieval analysis as a means of improving ozone retrievals in the upper stratosphere

The Umkehr method for retrieving the gross features of the vertical ozone distribution requires measurements of the ratio of zenith-sky radiances at two wavelengths in the near-UV region while the solar zenith angle (SZA) changes from 60 to 90 degrees. A Brewer spectrophotometer was used for taking such measurements extending the SZA range down to 96 degrees. Analyzed data from the Spring of 1991 imply that observations at twilight are of great significance in improving ozone retrievals in the upper stratosphere. Judged by the variance reduction for Umkehr layers 9 to 12 (25-30 percent for layer 11) and the increase in separation and amplitude of the averaging kernels for the relevant layers, the ozone retrievals in the upper stratosphere are shown to be in better agreement with climatological means

Hyperreactive Malarial Splenomegaly Syndrome--Can the Diagnostic Criteria Be Improved?

Hyperreactive Malarial Splenomegaly Syndrome (HMSS) was described and defined before sensitive tests for malaria were available. We present a series of seven individuals who were referred to our clinics with possible HMSS. Chronic malaria was demonstrated in those successfully treated but not in those who failed to respond to therapy. This observation suggests that the newer molecular malaria assays have a role to play in the identification of individuals who are likely to respond to treatment for HMSS in non-endemic regions

The REACT Collaborative Development Programme: Bringing universities together to enhance student-engagement activities for the ‘hard to reach’

As outlined in the funding application to the Higher Education Funding Council for Engagement (HEFCE), the REACT programme was designed to support the expansion of context-appropriate interventions to at least ten further universities through consultancy, workshops, mentoring of Student Unions and academic staff in other institutions, and working with students and student engagement practitioners to spread the interventions (REACT, 2015). This aligned with other aims of the bid, including that REACT would: disseminate best practice in relation to the challenge of engaging those outside the usual ambit of Student Engagement (SE) activities; build communities of practice based on strong evidence; and provide consultancy support and proven approaches amongst at least ten UK universities.This paper highlights how the REACT Collaborative Development Programme was designed to facilitate these aims, to build momentum and spread practice beyond the core of Winchester, Exeter and London Metropolitan universities. All aspects of the programme are outlined, from the initial Expression of Interest to the collaborative process of putting together this issue of JEIPC as a final output of REACT