This session will show you how to:
Registration required: https://libcal.lakeheadu.ca/event/3595832
Fiction writer Lauren Carter will read from her new novel, This Has Nothing To Do With You, and discuss her writing process, followed by a Q&A.
Description of This Has Nothing To Do With You
Winner of the Margaret Laurence Award for Fiction
When Melony Barnett’s mother commits a violent murder, Mel is left struggling with the loss of her parents and her future. For more than two years, she drifts around the continent, trying to carve out a life that has nothing to do with her past, before returning to her Northern Ontario home and adopting a rescue dog—a mastiff with a tragic history. As she struggles to help the dog heal and repair her relationship with her brother, Matt, she begins to uncover layers of secrets about her family—secrets that were the fuel for her mother's actions. This Has Nothing to Do With You is a compulsively readable novel that follows a dynamic cast of characters, revealing the complexity of the bonds that are formed through trauma and grief, with siblings, lovers, friends, and dogs.
There will be a 20% discount on the book and ebook available to those who attend the reading.
Lauren Carter is a writer living on Treaty One territory, just outside Winnipeg. She is the author of four books, most recently the novel This Has Nothing To Do With You, which won the Manitoba Book Award's Margaret Laurence Award for Fiction in 2020, when she also received the John Hirsch Award for Most Promising Manitoba Writer. She's currently working on three books - collections of poetry and short stories and a new novel - while serving as the 2020/21 Writer in Residence through the Winnipeg Public Library.
Zoom link: https://lakeheadu.zoom.us/j/98802442186?pwd=SlgwaG1sT2dqb2gxZFR4cGdmR1VIUT09
Meeting ID: 988 0244 2186
Passcode: 627265
This virtual research symposium will showcase the research being done at Lakehead, with a focus on biology research.
The event is open to anyone interested in research, especially for students who want to get involved. We will be hosting multiple biology professors who will present their current research interests and then there will be time for questions. To sign up for this event please fill out the google forms through the link which can be found on our Facebook page or Instagram, or below. It is definitely an event you don't want to miss!
Link to sign up: https://docs.google.com/forms/d/e/1FAIpQLSeOSsPoJ5qU8Zu3gGL_C6CYltIIYnXo...
Master's Candidate: Yan Wang
Supervisor: Dr. Liang Cui
External Examiner: Dr. Haiqiang Jiang (Northeastern University - China)
Internal Examiner(s): Dr. Wa Gao, Dr. Ahmed Elshaer, and Dr. Sam Salem (Director, Civil Eng. Graduate Programs - Chair)
Thesis Title: Analytical Modeling of Rock/Cemented Tailings Backfill Interface Interaction and Its Engineering Application
Date and time: Friday, January 22nd, 2021, between 10:00 A.M. and 12:00 P.M.
Zoom meeting:
Dr. Sam Salem is inviting you to a scheduled Zoom meeting.
Topic: Master's Thesis Defense and Presentation by Yan Wang
Time: Jan 22, 2021 10:00 AM Eastern Time (US and Canada)
Join Zoom Meeting
https://lakeheadu.zoom.us/j/93883445332?pwd=MGF0RmxnMDVZSE1FeisxWURIQzdM...
Meeting ID: 938 8344 5332
Passcode: 126934
Abstract:
Cemented tailings backfill (CTB) technology has gradually become a standard practice in underground mines around the world over the last three decades. This is because CTB can stabilize underground mine structure, maximize ore recovery, and mitigate the potential environmental hazards such as acid and metalliferous drainage (AMD). However, after placement into underground excavation, the consolidation of CTB occurs due to the water drainage. The resultant consolidation cannot only change the saturation condition of CTB materials, but also cause the relative displacement between CTB and rock mass. The latter will activate the passive rock/CTB interface resistance and directly affects the magnitude of internal stress (i.e., arching occurs in CTB). Therefore, it is necessary to quantitatively evaluate the effect of rock/CTB interface interaction on the internal stress of CTB for its optimal design. To characterize the internal stress in CTB, a new 3D effective stress model is developed in this study. The developed model integrates Bishop's effective stress principle, water retention relationship, and arching effect. All model parameters are determined from measurable experimental data. The uncertainties of the model parameters are examined by sensitivity analysis. A series of model applications is conducted to investigate the effects of field conditions on the internal stress in CTB. The obtained results show the proposed model is able to capture the influence of operation time, stope geometry, and rock/CTB interface properties on the effective stress in CTB. Hence, the developed model can be used as a useful tool for the optimal design of CTB structure.
MSc Mechanical Engineering Defense
Friday, January 22, 2021
2:30 PM Via zoom
Presented by: Haining Li
Supervisor: Dr. Kefu Liu
Join Zoom Meeting
https://lakeheadu.zoom.us/j/97929392265?pwd=MStOYVgyZDRuazJyTnpFeGtHTyt3...
Meeting ID: 979 2939 2265
Passcode: 073029
A Tunable Multi-Stable Piezoelectric Vibration Energy Harvester
ABSTRACT
The vibration energy harvester is intended to convert ambient environmental energy into electrical energy. It has great potential to be an alternative to the conventional battery in low-power electric devices. A traditional vibrating energy harvester consists of a linear oscillator that operates in a narrow frequency band. Nonlinear energy harvesters provide a promising solution to widen the operating bandwidth. Based on the system stability states, the nonlinear vibration energy harvesters can be classified as mono-stable and multi-stable. In this study, a tunable multi-stable piezoelectric energy harvester is proposed. The apparatus can be manually tuned to achieve three states, namely tri-stable, bi-stable, and mono-stable. It has a compact structure compared to the existing designs.
Firstly, the apparatus’s design is presented. The analytical model for the restoring force due to the magnetic interaction is developed by using the magnetic dipole approach. Then the model is validated experimentally. Using the measured data, the model optimization is conducted by using the genetic algorithm. Based on the optimized model, the stability state regions versus the tuning parameters are identified. Secondly, the electromechanical model of the developed apparatus is developed. By linearizing the model, the optimum resistance value of the linear system under harmonic excitation and colored noise excitation is studied, respectively. Thirdly, the output performance of the bi-stable energy harvester under colored noise excitation is investigated numerically and experimentally. Fourthly, the output performance of the tri-stable energy harvester is studied numerically and experimentally as well. The results show that the frequency analysis method is insufficient to determine the optimum resistance when the tri-stable energy harvester is engaged in the high orbit inter-well oscillation. In addition, when the multi-stable energy harvester system is at resonance, the output performance will be largely improved by the separation between each well.
Did you miss our last session? It's not too late to learn about admission requirements and application procedures for domestic students to our Graduate Programs at Lakehead.
Join our webinar on February 4th from 4pm-5pm to have the opportunity to listen to a short presentation, and ask any questions you may have.
Please register at: https://www.google.com/url?q=https://lakeheadu.zoom.us/webinar/register/...
Have you ever wondered what zombies, Star Trek, and rabbits have in common? Come and find out! An original and occasionally hilarious introduction to the world of personal finance hosted by Rob Brown, author of Wealthing Like Rabbits.
How well do you understand Ontario’s personal income tax, credits and benefit programs? This webinar hosted by the Ministry of Finance will help you understand personal income tax, credits and benefits. No registration required!
Master's Candidate: Sobita Gurung
Supervisor: Dr. Sam Salem
Internal Examiner: Dr. Ahmed Elshaer
External Examiner: Dr. Ahmed Mostafa (Ryerson University)
Thesis Title: LOAD RATIO EFFECTS ON THE STRUCTURAL FIRE BEHAVIOR OF GFRP-REINFORCED CONCRETE BEAMS WITH STRAIGHT- AND HOOKED-END BAR LAP SPLICES
Date and time: Tuesday, January 26th, 2021, between 3:00 P.M. and 5:00 P.M.
Zoom meeting:
Dr. Sam Salem (Director, Civil Engineering Graduate Programs) is inviting you to a scheduled Zoom meeting.
Topic: Master's Thesis Defense and Presentation by Sobita Gurung
Time: Jan 26, 2021 03:00 PM Eastern Time (US and Canada)
Join Zoom Meeting
https://lakeheadu.zoom.us/j/92421191854?pwd=WHBpeHdIZVJQcXdUQkZDY0loOHky...
Meeting ID: 924 2119 1854
Passcode: 163469
Abstract:
For a few decades glass fibre-reinforced polymers (GFRP) have been gaining acceptance as an alternative material to steel in manufacturing reinforcing rebars for concrete structures to enhance their durability especially those structures which are susceptible to corrosion. The good engineering properties, such as high chemical and corrosion resistance and high strength-to-weight ratio, make GFRP a desirable engineering material. However, the application of GFRP-reinforced concrete is still mostly limited to only certain components in bridges and marine structures where fire is not a primary consideration. Conventionally, steel is the reinforcement in tension in concrete structural elements. The properties of both steel and concrete at high temperature are well studied thus, it is easier to predict the behavior of steel-reinforced concrete structures in fire. However, the structural behavior of GFRP-reinforced concrete elements at elevated temperatures is yet to be understood well since very limited research has been done in this regard, which restricts its broader utilization. The primary objective of this research is to study the effect of load ratio on the structural behaviour of GFRP-reinforced concrete beams having straight- and hooked-end bar lap splices.
In this experimental study, four large-scale GFRP-reinforced concrete beams having lap splices at the beam midspan were subjected to elevated temperatures that followed the CAN/ULC-S101 standard fire time-temperature curve while being monotonically loaded. All four 2750-mm long beams had cross-sectional dimensions of 300 mm wide x 350 mm high, and were subjected to 80% load ratio of the beam ultimate design moment as per the beam design according to CSA-S806-12 standard. Two beams had straight-end bar lap splices, whereas the other two had hooked-end bar lap splices in the beam midspan. During fire tests, the beams were subjected to four-point flexure bending with two-point loads being 1000 mm apart. The results obtained in this study were then compared with the outcomes of a prior study conducted by Nour (2019) on identical beams but subjected to half of the applied load (40% load ratio of the beam ultimate design moment). It was observed that for the beams with hooked-end bar lap splices, the effect of load ratio on fire resistance time was significant, as the application of the higher load ratio reduced the fire resistance time of the beam by approximately 60 minutes. However, there was almost no effect of the applied load ratio increase on the fire resistance time of the beams with straight-end lap splices. The fire resistance time was mainly affected by direct exposure of GFRP bars to the fire during the experiments, however for beams with straight-end bar lap splices the pre-cracks were very small to expose bars to fire directly and extreme cracks did not occur until a few minutes before beam failure. Thus, direct fire exposure time of GFRP bars for beams having straight end lap splices was not significantly long to impact the fire resistance time.
THE DEPARTMENT OF COMPUTER SCIENCE GRADUATE SEMINAR 2021
Guest Speaker Series Presented By:
Dr. Marina L. Gavrilova
"Privacy and Security Considerations in Social Behavioral Biometric Multi-modal Systems"
Friday, February 5, 2021
12:00 pm
For more information about this presentation, including the description from the poster above, visit this page.
To register for this virtual event, please email grad.compsci@lakeheadu.ca and a zoom link will be shared.
Everyone is welcome.
