Distinguished Lectures

Abstract: We will demonstrate some recent results on a diffusive host-pathogen model with spatially heterogeneous parameters and distinct dispersal rates for the susceptible and infected hosts. In addition to global existence of solution, existence of a global attractor, we also discuss the threshold dynamics in terms of the basic reproduction number R_0 which is identified as the spectral radius of a linear operator in the appropriate functions space. When R_0>1, the solution of the model is uniformly persistent and there exists a positive steady state. In the latter case, we also explore the asymptotic profiles of the endemic steady state as the dispersal rate of the susceptible or infected hosts approaches zero. The results reveal some differences between the roles that the dispersion of susceptible and infectious hosts can play.

Date: April 24, 2017
Time: 2:30 P.M to 3:30 P.M
Location: CB 126

DISTINGUISHED LECTURE: Novel Principles and Approaches of Bioinformation Acquisition at the Nanoscale and Molecular Level

Kemin Wang

Professor
Hunan University, China

Abstract: This talk gives a systematic review of the pioneering research in bioinformation acquisition at the nanoscale and molecular level, developed at the Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province. It focuses on challenges of this development for bioinformatics and complex data analytics.

Date: October 11, 2016
Time: 11:30 to 12:30 am
Location: CB 126

DISTINGUISHED LECTURE: Transmission Dynamics and Final Epidemic Size of Ebola Virus Disease Outbreaks with Varying
Interventions

Gergely Röst
Professor
University of Szeged
Szeged, Hungary

Abstract: The 2014 Ebola Virus Disease (EVD) outbreak in West Africa was the largest and longest ever reported since the first identification of this disease. We propose a compartmental mode for EVD dynamics, including virus transmission in the community, at hospitals, and at funerals. Using time-dependent parameters, we incorporate the increasing intensity of intervention efforts. Fitting the system to the early phase of the 2014 West Africa Ebola outbreak, we estimate the basic reproduction number as 1.44. We derive a final size relation which allows us to forecast the total number of cases during the outbreak when effective interventions are in place. Our model predictions show that, as long as cases are reported in any country, intervention strategies cannot be dismissed. Since the main driver in the current slowdown of the epidemic is not the depletion of susceptibles, future waves of infection might be possible, if control measures or population behavior are relaxed. By comparing model output to real data, we show that the model can provide very accurate predictions even when intervention parameters are time-varying.

Date: September 30, 2015
Time: 3:30 pm to 4:00 pm
Location: TEL 5021A

DISTINGUISHED LECTURE: Traveling Waves in Isothermal Diffusion Systems: Existence, Stability and Oscillations

Yuanwei Qi
University of Central Florida
Florida, USA

Abstract: In this talk I shall present some of the most recent results my and collaborators and I have proved in the last a few years. In particular, we show a promising model proposed by a leading world authority in chemical engineering, Prof. Gary of U. Cambridge, FRS, has very rich structures and the analytic study proves to be far more challenge than the old model.

Date: September 30, 2015
Time: 4:00 pm to 4:30 pm
Location: TEL 5021A

DISTINGUISHED LECTURE: Mad Cow Disease: How Collaboration Between Biologists and Mathematicians Lead to a New Discovery About Prion Formation

Laurent Pujo-Manjouet
Associate Professor
Université Clude Bernard
Lyon, France

Abstract: In a previous work by Alvarez-Martinez et al. (2011), the authors pointed out some fallacies in the mainstream interpretation of the prion amyloid formation. It appeared necessary to propose an original hypothesis able to reconcile the in vitro data with the predictions of a mathematical model describing the problem. During this talk, I will introduce a model developed accordingly with the hypothesis that an intermediate on-pathway leads to the conformation of the prion protein into an amyloid competent isoform thanks to a structure, called micelles, formed from hydrodynamic interaction. I will also compare data to the prediction of our model and propose a new hypothesis for the formation of infectious prion amyloids.

Date: September 1st, 2015
Time: 2:30 pm to 3:30 pm
Location: Ross N940

DISTINGUISHED LECTURE: The Information System Approach Towards Big Data Processing and Analysis

Weidong Bao
Professor
College of Information System and Management, National University of Defense Technology
Changsha, China

Jiuyang Tang
Professor
College of Information System and Management, National University of Defense Technology
Changsha, China

Yaohong Zhang
Associate Professor
College of Information System and Management, National University of Defense Technology
Changsha, China

Zhimeng Li
Associate Professor
College of Information System and Management, National University of Defense Technology
Changsha, China

Abstract: A group of four scientists from the College of Information System and Management (CISM) at the National University of Defense Technology (NUDT) will introduce their recent research findings and the training and research capacity at NUDT, to furtheren exploration of collaborative opportunities between LIAM and CISM. They share common research interest in the discipline of Management Science and Engineering (MSE), and their research expertise in the fields of information system approach towards big data and cloud computing includes supporting information technologies; data analytics and design technologies; methodologies for information system management; and information systems analytics and design for special applications. The group will discuss their perspective on potential collaboration with LIAM and York’s ADERSIM group in crisis management using big data and cloud computing based simulation.

Date: August 21, 2015
Time: 10:30 am to 11:30 pm
Location: Ross N638

DISTINGUISHED LECTURE: Unpredicted outbreak by the basic reproduction number

DISTINGUISHED LECTURE: A Delayed Reaction-Diffusion Equation with Free Boundary

DISTINGUISHED LECTURE: Nonlinear Boundary Value Problems in Ordered Banach Spaces

DISTINGUISHED LECTURE: Travel Frequency and Infectious Diseases

DISTINGUISHED LECTURE: Dispersal Heterogeniety and the Spreading Speeds of Marine Invasions

LIAM-PHAC symposium on LIAM-ADERSIM Agent-based Simulator for the Gastro-intestinal Pathway of L. monocytogenes

LIAM symposium on Infection Dynamics Modelling and Informatics

DISTINGUISHED LECTURE: Diffusive Host-Pathogen System with Different Dispersal Rates and Spatial Heterogeneity

DISTINGUISHED LECTURE: Novel Principles and Approaches of Bioinformation Acquisition at the Nanoscale and Molecular Level

DISTINGUISHED LECTURE: Transmission Dynamics and Final Epidemic Size of Ebola Virus Disease Outbreaks with Varying Interventions

DISTINGUISHED LECTURE: Traveling Waves in Isothermal Diffusion Systems: Existence, Stability and Oscillations

DISTINGUISHED LECTURE: Mad Cow Disease: How Collaboration Between Biologists and Mathematicians Lead to a New Discovery About Prion Formation

DISTINGUISHED LECTURE: The Information System Approach Towards Big Data Processing and Analysis

DISTINGUISHED LECTURE: Transmission Dynamics and Final Epidemic Size of Ebola Virus Disease Outbreaks with Varying
Interventions