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elliothowells

Cardiff School of Mathematics - MSc Information - 0 views

www.cardiff.ac.uk/...index.html

URL-55

shared by elliothowells on 28 Jul 15 - No Cached
  • Fees and Studentships
  • ees for 2015/2016   UK/EU STUDENTS   Full-time - In the region of £7,560* Part-time - In the region of £5,020*   INTERNATIONAL STUDENTS   Full-time - In the region of £17,500*   *Fees subject to chang
  • Who is Eligible? Applications are welcome from people with: A first degree (minimum second class honours) from a recognised university in a numerate subject such as Mathematics, Operational Research, Statistics, Management Science, Economics, Engineering, Computer Science, Geography or a suitable Science degree.   A good level of English language, in written, oral, reading and listening (applicants whose native language is not English will normally require an IELTS score of 6.5 (no less than 5.5 in any category) or an internet based TOEFL score of 90 with no less than 17 in Listening, 20 in Speaking, 18 in Reading and 17 in Writing). Willingness to engage with staff and students for mutual benefits. Motivation to establish or accelerate a career in Operational Research and Statistics. We recognise that appropriate work experience is an important component in deciding on an applicant’s suitability, and so this will be taken into account with particular emphasis given to experience directly relevant to the programmes of study. How to Apply To apply, please follow the link below to the University application pages. If you wish to be considered for studentships then you must state this on the application form (in the section where you say how you will fund your studies). We will then contact you and may invite you to visit the School and discuss your application with a member of staff before making a decision on whether to offer you a studentship. Please note that studentships are only available to full-time UK/EU students.
elliothowells

Operational Research and Statistics Seminars 2014 - 2015 - 0 views

www.cardiff.ac.uk/...index.html

URL-73

shared by elliothowells on 29 Jul 15 - No Cached
  • Operational Research and Statistics Seminars 2014-2015 Programme All seminars will commence at 12:10pm in room M/2.06, The Mathematics Building, Cardiff University, Senghennydd Road (unless otherwise stated). Please contact Dr Iskander Aliev for more details regarding Operational Research/WIMCS lectures and Dr Jonathan Gillard for more details regarding Statistics lectures.
  • 1 October 2014 Speaker: Dr Trivikram Dokka (Lancaster) Title: New polyhedral results for the three-index assignment problem. Abstract: PDF Download 20 October 2014 at 17:30 in Room M/0.40 Speaker: Prof. Michael Carter (Toronto). Title: Health System Patient Flow Simulation Model. Abstract: Our cross-sector patient flow model is a system dynamics simulation focused on the flow rates of patients between health system sectors, and the feedback structures around them. It takes a whole-system, strategic perspective, and is designed to produce output that captures the direction and magnitude resulting from policy changes around patient pathways and service levels.
  • The model was developed within a geographically large health region of around one million people. It was constructed based on consultations with four expert panels: health policy leaders, acute, institutional and home and community care. The first panel identified the policy levers targeting flows of patients between healthcare sectors, while the other three panels were engaged to develop causal loop diagrams (CSD) that explained admission and discharge flows of their respective sectors. Qualitative input from these panels was merged with health system data to develop a stock-and-flow structure of the health region. Patients are grouped into cohorts by age, sex, clinical condition, referral source and discharge destination. The model output was validated against admission and discharge data collected over a four year period. The model has been applied to both qualitative (CSD) and quantitative (stock and flow) decision problems. The CSD model was used by the Ontario Ministry of Health and Long Term Care to test a new slow stream rehab option for complex patients. The model demonstrated several negative unintended consequences and led the policy team to revise their recommendations. The quantitative model has been used to validate the Ontario Stroke Strategy to estimate length of stay improvements. We are currently working with the Ministry to make the tool more widely accessible.
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  • 5 November 2014 Speaker: Dr Ben Torsney (Glasgow),. Title: Optimal Design, Lagrangian and Linear Model Theories: Further Developments on a Fusion. Abstract: TBC.
  • 20 November 2014 Speaker: Dr Vadim Lozin (Warwick). Please note change of room for this - M/2.01. Title: Combinatorics and algorithms for augmenting graphs. Abstract: The notion of augmenting graphs generalizes the Berge's idea of augmenting chains that has been used by Edmonds in his celebrated solution of the maximum matching problem. This problem is a special case of the more general problem of finding a maximum independent set in a graph. Recently, the augmenting graph approach has been successfully applied to solve the maximum independent set problem in various other special cases. However, our knowledge of augmenting graphs is still very limited, and we do not even know what the minimal *infinite* classes of augmenting graphs are. In this talk, we give an answer to this question and apply it to extend the area of polynomial-time solvability of the maximum independent set problem.
  • 28 January 2015 This will take place in room M/2.06. Speaker: Prof. Robert John (Nottingham). Title: Type-2 Fuzzy Logic in Decision Support Abstract: This talk will provide an overview of Bob's research in type-2 fuzzy logic and its application in Decision Support. Type-2 fuzzy sets are fuzzy-fuzzy sets - that is, where the fuzzy set has membership grades that are themselves fuzzy sets, rather than numbers in [0,1]. Fuzzy sets (type-1) have had significant success in control applications but by their very definition are not particularly 'fuzzy' and struggle in applications that attempt to mimic human reasoning in decision support systems. Introduced in 1975, type-2 fuzzy logic really started to grow in the late '90s led by Bob and Jerry Mendel. In the intervening period the number of type-2 papers and researchers has grown considerably. This talk will introduce the audience to type-2 fuzzy logic and provide a brief history
  • Bob will describe practical application of his work in decision support, such as the aggregation of uncertain information, supply chain modelling and medical diagnosis. Bob John has a BSc in Mathematics, a MSc in Statistics and a PhD in Fuzzy Logic. He worked in industry for 10 years as a mathematician and knowledge engineer developing knowledge based systems for British Gas and the financial services industry. Bob spent 24 years at De Montfort University in various roles including Head of Department, Head of School and Deputy Dean. He led the Centre for Computational Intelligence research group from 2001 until 2012. Bob joined Nottingham in 2013 where he led on the LANCS initiative and Heads up the research group Automated Scheduling, Optimisation and Planning (ASAP) in the School of Computer Science. The LANCS Initiative is built on a collaboration between four U.K. Universities: Lancaster, Nottingham, Cardiff and Southampton. The research group carries out multi-disciplinary research into mathematical models and algorithms for a variety of real world optimisation problems. It has 8 academic staff, 9 researchers and over 30 PhD students.
  • 11 February 2015 Speaker: Dr Fabricio Oliveira (Rio de Janeiro). Title: Optimising under uncertainty: an introduction and applications in healthcare related problems. Abstract: In this talk we will discuss the importance, as well as some of the available tools, to consider the stochastic nature of input parameters in optimisation problems. It is well known that the static nature of optimisation problems makes it difficult to support decision making when the input data is subject to uncertainty. We will present how one can incorporate such uncertainty by means of stochastic and robust optimisation, using examples of current applications in healthcare related problems. Some previous background in optimisation is of good value, but not necessarily mandatory. Hopefully, at the end of the talk, the audience will be able to understand how it is possible to include uncertainty in optimization-based decision support tools to improve the decision-making process. 18 February 2015 Speaker: Christian Henning (UCL). Title: TBC. Abstract: TBC. 4 March 2015 Speaker: Dr Dmitrii Pasechnik (Oxford). Title: TBC. Abstract: TBC. 18 March 2015 at 15:00 Speaker: Haeran Cho (Bristol). Title: TBC. Abstract: TBC.
  • 15 April 2015 Speaker: Dr Vladimir Deineko (Warwick). Title: Special structures in polynomially solvable cases: Is there much in common? Abstract: In our talk we present a survey of polynomially solvable cases of NP-hard problems with an emphasis on common structures in these cases. We concentrate on the cases where specially structured matrices are involved. It most considered cases permuting rows and columns of specially structured matrices destroy the properties needed. We discuss the arising recognition problems and pose quite a few open questions from this exciting area of research. 29 April 2015 Speaker: Prof. Mark Kelbert (Moscow). Title: Shannon's entropy power inequality and weighted differential entropies. Abstract: We establish a number of new inequalities for weighted differential entropies and analyze in details a Bayesian problem of estimating probability of success in a series of trials with binary outcomes. In particular, the weighted Rao-Cram\'er inequality is presented.
  • 6 May 2015 Speaker: Prof. Mark Girolami (Warwick). Title: Differential Geometric Markov chain Monte Carlo Methods Abstract: Monte Carlo methods are the dominant approach to perform inference over increasingly sophisticated statistical models used to describe complex phenomena. This presents a major challenge as issues surrounding correct and efficient MCMC -based statistical inference over such models are of growing importance. This talk will argue that differential geometry provides the tools required to develop MCMC sampling methods suitable for challenging statistical models. By defining appropriate Riemannian metric tensors and corresponding Levi-Civita manifold connections MCMC methods based on Langevin diffusions across the model manifold are developed. Furthermore proposal mechanisms which follow geodesic flows across the manifold will be presented. The optimality of these methods in terms of mixing time shall be discussed and the strengths (and weaknesses) of such methods will be experimentally assessed on a range of statistical models will also be considered. This talk is based on work that was presented as a Discussion Paper to the Royal Statistical Society and it remains the most downloaded article from the journal website. Details Here.
  • 27 May 2015 Speaker: Dr Timm Oertel (Zurich). Title: A polyhedral Frobenius theorem with applications to integer optimization. Abstract: We prove a representation theorem of projections of sets of integer points by an integer matrix W. Our result can be seen as a polyhedral analogue of several classical and recent results related to the Frobenius problem. Our result is motivated by a large class of non-linear integer optimization problems in variable dimension. Concretely, we aim to optimize f(Wx) over the set of integers in P, where f is a non-linear function, P is a n-dimensional polyhedron and W is a d x n matrix. As a consequence of our representation theorem, we obtain a general efficient transformation from the latter class of problems to integer linear programming. Our bounds depends polynomially on various important parameters of the input data leading, among others, to first polynomial time algorithms for several classes of non-linear optimization problems.
elliothowells

Healthcare Modelling - 0 views

www.cardiff.ac.uk/...index.html

URL-90

shared by elliothowells on 29 Jul 15 - No Cached
  • Healthcare Modelling Cardiff is renowned for its long and successful tradition of research in this field.
  • A number of PhD students and Research Associates (post-doctoral students) are funded directly by Local Health Boards.
  • creation of a Mathematical Modelling Unit
    • elliothowells
      elliothowells on 29 Jul 15
       
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  • Several staff within the group are members of the European Working Group on Operational Research Applied to Health Services (ORAHS), and members of the Steering Group of the EPSRC funded Network in Healthcare Modelling and Simulation (MASHnet).
    • elliothowells
      elliothowells on 29 Jul 15
       
      Is this still correct?
  • Research projects typically comprise of a mixture of theoretical and practical investigations,
  • Current and recent projects include: Forecasting of ambulance demand, workforce rostering and deployment of vehicles. Game theoretic models for EMS-ED interface. Modelling of hospital bed capacities, workforce and waiting lists Intensive care provision. Operating theatre scheduling. Emergency unit reconfiguration. Forecasting hospital admissions linked to weather events (with the Met Office). Research Into Global Healthcare Tools – creating a toolkit of techniques for NHS service delivery. Workforce planning model for anaesthetists. Modelling treatment effects in the HIV/AIDS Epidemic as part of a European Union concerted action. Development of data mining and decision tree tools for assisting the NHS Information Centre with the redesign of Healthcare Resource Groups (HRGs). Modelling the future demand for residential care in an ageing population. Novel research on incorporating human behavioural factors in simulation models with application to breast cancer screening. Facility-location modelling. Modelling nurse skill-mix needs for inpatient wards and in the community. Research on screening for Chlamydia.
    • elliothowells
      elliothowells on 29 Jul 15
       
      Are there any additional projects to be added?
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