IASC - The Pit-Falls In The Wrong Use Of Fixed Effects Model And Random Effects Model And Their Implications On The Optimality Of Designed Experiments
| Date | 15 Sep 2023 |
| Time | 14:00 GMT+02:00 - 15:30 GMT+02:00 |
| Level of instruction | Beginner |
| Instructor |
Prof. Mary Pascal Iwundu
Dr. Anthony Ekpo
|
| Registration fee |
Free of charge
|
Scientific models, when correctly used, help to adequately explain and predict the behaviours of real-life systems or processes with a view to obtaining optimal operating conditions and associated properties of the systems or processes. Unfortunately, wrong choice or wrong use of models have significant negative consequences on optimality properties, model efficiency, and experimental results and applications. The distinction between the fixed effects model and random effects model is presented here, in relation to assumptions about independent variables, error distribution of the variables, model parameters, estimability of model coefficients and variance components, source of uncertainty, inference and prediction; and in a cyclic Incomplete block design of size t=9, b=9, k=3 and r=3 where A-, D- and E- optimality criteria are of interest. Optimal Designs with appropriately stated models find applications in a variety of scientific disciplines, including Physical, Chemical, Biological, Pharmaceutical, Medical, Ecological and Earth Sciences.
Instructors
About the instructor
Prof. Mary Paschal Iwundu hails from Akwa Ibom State, Nigeria. She holds a B.Sc. Statistics degree from the University of Uyo, Nigeria, an M.Sc. Statistics degree from the University of Nigeria, Nsukka and a Ph.D. in Statistics also from the University of Nigeria, Nsukka. She began her academic career on November 1, 1995, as a Graduate Assistant at the University of Uyo, where she set out life principles to chart an excellent and reputable academic career. In 2017, she rose to the rank of Professor of Statistics and was made a Fellow of the Nigerian Statistical Association (NSA).
She has developed a strong career path in teaching and research and has made impacts in the mentorship of young academics. Her research area is Optimal Experimental Design with a special interest in Response Surface Methodology. She has supervised several postgraduate theses and dissertations; and published in reputable journals.
Prof. Iwundu is a visionary leader with excellent administrative skills, highly strategic, team-focused, and an effective collaborator with outstanding abilities to work with people who have similar visions. She is currently a member of Faculty in the Department of Statistics at the University of Port Harcourt, Rivers State, Nigeria. She has served as Head of the Department, Member of Boards and Committees; and is presently the Director of the Intellectual Property and Technology Transfer Office, University of Port Harcourt. Her vision for academic excellence drives her into organizing workshops on academic excellence and integrity, innovation, intellectual property management; and entrepreneurship.
Prof. Iwundu is a strong, principled, and industrious woman, and is happily married and blessed with four lovely children. Her life philosophies are centered on spreading love everywhere and never stopping to learn.
About the instructor
Dr. Anthony Ekpo is a Consultant Statistician. He holds an OND in Statistics from the Akwa Ibom State Polytechnic, Ikot Osurua, a B.Sc. Statistics degree from the University of Uyo, Nigeria, an M.Sc. Statistics degree (Experimental Designs) from the University of Nigeria, Nsukka, another M.Sc. Statistics degree (Biostatistics) from the University of Ilorin, Nigeria and a Ph.D. in Statistics also from the Federal University of Agriculture, Makurdi, Nigeria. His area of research is Optimal Experimental Designs and Biostatistics with special interest in Optimality of designs and Nutrition/Mortality Surveys using SMART Methodology.
He is an active member of the Global Nutrition Cluster (GNC)-Technical Alliance Consultants, coordinated by UNICEF and Action Against Hunger (AAH), Canada. He possesses remarkable field experiences; having consulted for reputable International Organizations such as: International Union for the Conservation of Nature (IUCN), Medecins Sans Frontieres (MSF), Research Triangle International (RTI), INTERSOS Humanitarian Aids Organization, Save the Children International (SCI), Première Urgence Internationale (PUI), Center for Clinical Care and Clinical Research Nigeria (CCCRN), Maestral International LLC, Minneapolis, Minnesota, USA and
a FUAM-LISA Co-investigator for the University of Colorado Boulder, USA/USAID funded PHL Survey.
Dr. Ekpo has over 10 years’ experience conducting Nutrition/Mortality surveys using the SMART Methodology. He is a member of the Nigerian Statistical Association (NSA), Professional Statisticians Society of Nigeria (PSSN), a Regular member of the International Statistical Institute (ISI) and an arm member of the International Association of Statistical Computing (IASC). He is the Treasurer and North-Central Nigeria Coordinator of IASC-African Members’ Group. Presently, he is a member of Faculty in the Department of Statistics, Federal University of Agriculture, Makurdi, Nigeria. He is happily married with three lovely children.