Comparative Analysis of Interference-Free Alternatives to Wi-Fi

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Once again I have the pleasure of announcing the next Communication in Engineering (CCOM 206) Excellence in Written Communication Award. Alexandre Tessier is the Fall 2017 winner for ‘Comparative Analysis of Interference-Free Alternatives to Wi-Fi’ (yay!).

Abstract:

Current Wi-Fi technologies occupy oversaturated 2.4 GHz and 5GHz frequency bands. In areas with high router density, this results in poor Wi-Fi performances, and, especially, slow data transfer rates at a time when demand for high-speed networks is rising. To minimize these effects, new technologies taking advantage of the availability of higher frequencies have been developed.In particular, Li-Fi and WiGig aim to transfer data wirelessly at rates faster than Wi-Fi and, more importantly, without interference. This paper assesses the viability of these two technologies as interference-free alternatives to Wi-Fi based on 3 standard networking attributes: data transmission capabilities, security, and vulnerability to interference. The analysis concludes that Li-Fi can transfer data at higher rates than WiGig, can be used to implement location-based security levels, and, unlike WiGig, is impervious to interference from neighbouring cells. For the aforementioned reasons, Li-Fi is the most promising candidate for an alternative to Wi-Fi, vastly outperforming current implementations of WiGig.

Download the full paper from the University’s open access repository.

Congratulations, Alexandre!

Alternatives to Lithium-Ion Batteries for Electric Vehicles

The Communication in Engineering (CCOM 206) Excellence in Written Communication Award winner has been announced for the combined Winter/Summer 2017 terms (insert drum roll): Albert Kragl!

Alternatives to Lithium-Ion Batteries for Electric Vehicles

With man-made climate change becoming increasingly severe every year, the need for vehicles powered by alternative energy sources is now greater than ever. Although there are electric vehicles commercially available today, their limited driving range and high price makes them unappealing to many consumers. In order to move past these limitations, researchers have begun investigating different types of batteries with the goal of finding a battery that can reliably store more energy than a traditional lithium-ion battery. This paper analyzes the feasibility of two battery types—lithium-sulfur and lithium-air—as potential replacements for lithium-ion batteries in electric vehicles. Although both batteries demonstrate high theoretical energy densities, the lithium-air battery has a much higher practical energy density when compared to lithium-sulfur, as well as a lower environmental impact and a greater number of charge cycles. The lithium-air battery also demonstrates a higher energy density and lower environmental impact when compared to lithium-ion. These results make lithium-air technology the best candidate to replace lithium-ion batteries in the near future.

The full article PDF is available from McGill’s open access institutional repository, eScholarship.

Congratulations, Albert!

Exploring McGill on a rainy day

I’m taking advantage of this rainy day to tune in to the Mini-Science 2018 episodes: Women in Science at McGill (and beyond). This seven-part series was recorded and made available on the McGill YouTube channel.

YouTube is the place to go If you have ever wondered if you could watch lectures and events that have taken place on campus. Videos include public forums, competitions, and conference presentations.

Apart from the main channel, there are additional options on YouTube for webcasts related to science at McGill: AstroMcGill, Separating Sense From Nonsense (McGill Office for Science and Society), Montreal Neuro, and McGill University Health Centre (MUHC).

If you have time, I highly recommend the first episode of this year’s Mini-Science – History of Women in Science (below). In it, Principal Suzanne Fortier tells an engaging story about her experience growing up in a small town in Quebec and her unique path to science. There were a total of three books in her home, but to find out which three you will have to watch.

Enjoy the rain!

Communicating Science: Profile of Sierra Clark by Audrey Carleton

Today we have a guest student post, originally submitted as a class assignment for Communicating Science (CCOM 314). With support from Diane Dechief, Faculty Lecturer at the McGill Writing Centre, we will be sharing more noteworthy student writing right here on The Turret.

Audrey Carleton chose to write a profile on Sierra Clark, a graduate student supervised by Dr. Jill Baumgartner in the Institute for Health and Social Policy.


Sierra Clark

Headline: Sierra Clark on indoor air pollution and academic uncertainty

Subhead: McGill Master’s student tests lifesaving interventions for Tibetan Plateau residents

By: Audrey Carleton

Date: December 1, 2017

Sierra Clark has been reading National Geographic for as long as she can remember. Even before she learned to read, she would eagerly flip through the magazine’s glossy pages to admire its photos. From this young age, she had her sights set on someday working for the publication as an archaeologist.

In the twenty years that followed, Clark had a few changes of heart. When she began her undergraduate degree at McGill University in 2011, she was enrolled with a major in Anthropology. But after sitting through a few convoluted lectures in an introductory anthropology course, she realized the program wasn’t the right fit for her. One meeting with an academic advisor later, she settled on a major in Geography, and swiftly fell in love with it. Upon graduating in 2015, she swiftly enrolled in a Master’s Program in Epidemiology at McGill, which she is completing now. All the while, Clark continued to read National Geographic religiously. Continue reading

Level up your research skills

As a librarian, it is really rewarding to facilitate the MyResearch seminar series. It is true that we take advantage of the face-to-face time to impart a lot of what we know about the rapidly changing world of information and scholarly publishing. However, it also gives us the opportunity to learn more about graduate research projects, and watch the inevitable skills swapping that takes place among students.

The number one comment that we get after each of the four-part series comes to an end is something like, “I wish I had known all of this when I first started.” Luckily, it is never too late to learn in life, and these skills in particular will serve you well past graduation.

Sign up for MyResearch today and join fellow students and librarians this February.

I look forward to seeing you there!

April

Another winning paper!

The Fall 2016 Excellence in Written Communication Award goes to Brittany Stott for “Controlling myoelectric-prosthetics through the use of nerves and muscles.”

The accomplishment comes with a monetary prize of $500 from the Faculty of Engineering.

The CCOM 206: Communication in Engineering Writing Recognition Committee found the paper to be very clearly written and well organized, and noted the exemplary use of figures and a table.

The abstract is pasted below but you can download the full paper from the record in eScholarship, McGill’s digital repository.

People who are fitted with prosthetics due to the loss of a limb may have difficulty performing simple daily tasks that may be taken for granted, such as tying shoe laces or opening a jar. The prosthetics used today are often rigid, inflexible, bulky molds that are standardized and have minimal degrees of freedom. The development of myoelectric-controlled prosthetics has greatly facilitated the performance of daily tasks by the user, although the best method for controlling these prosthetics is still to be determined. This paper compares and discusses three major advancements in prosthetic control electrode arrays, osseointegration, and targeted muscle reinnervation by examining stability, accuracy, and movability of the user controlling the prosthetic. It is determined that the most beneficial solution for the user would be the implementation of osseointegration and targeted muscle reinnervation combined. This combination would allow the creation of a prosthetic that would increase the accuracy and stability of the artificial limb, and that would provide a more permanent and long-term solution. In addition, the creation of a myoelectric-controlled prosthetic that incorporates these two methods would allow for further research and would increase the stability, accuracy, and movability of the user.

Stay tuned for the winner of the Winter and Summer 2017 Excellence in Written Communication Award…

A very short holiday reading list

Winter in Mars North Polar Region Download

The holidays are right around the corner and it is a great time to catch up on your reading. Although, sometimes it is nice to keep it short. I have got a recommendation that might do the trick: Very short introductions from Oxford University Press. There are hundreds of e-books in this series, with titles in health and medicine, science and mathematics. It also includes very short introductions to topics like ageing, egyptology, and Alexander the Great.

If you are very, very short on time, we also have a nice collection of audio books on OverDrive that you can listen to on the go. For example, check out Astrophysics for people in a hurry, by Neil deGrasse Tyson (a New York Times Bestseller).

Happy [very short] holiday reading!

Image: Winter in Mars North Polar Region (NASA)

Science cinema with Kanopy

Science CinemaIt’s Science Literacy Week and this year we’ve added movies to the calendar, selected from the Kanopy streaming video service.

We will also have popcorn, so be sure to join us at 5:30pm in the Redpath Library Building, Research Commons Room A, where the visualization wall is perfect for screenings.

Here is what’s on:

  • Monday: Google and the World Brain

  • Tuesday: I Dream of Wires: The Machine that Shaped Electronic Music

  • Wednesday: Queen of the Sun: What are the Bees Telling Us?

  • Thursday: Top Secret Rosies

  • Friday: GTFO: Get the F**k Out – Women in Gaming

Read descriptions here.

With Kanopy in the Library collection, every day can be movie day. Whether you love classic films or documentaries, there is plenty to explore.

Happy viewing!

Walk and work @ Schulich Library

Schulich treadmill deskIt is important to move around throughout the day to meet those fitness goals, reduce stress, and get our creative juices flowing. Living through your average Montreal winter does not make it easy. Once we arrive at our destination it is easy to rationalize staying put for as along as possible.

To help make moving around a little easier, we have installed a treadmill desk at Schulich Library. It is up on the group study floor so that the little noise it makes will not be an issue. The height of the desk portion is adjustable and the speed can be set up to 4 mph. While you can’t get a full on run on the treadmill, you can get a nice brisk walk going and get your heart rate up.

I know it is a little unusual but don’t be shy about getting on the treadmill and setting up your work on the desk. Seeing you there will help others feel more comfortable about walking while working. Also, if you get the chance, please fill out our short survey after your walk and give us your feedback.

Winner of the CCOM Writing Recognition Award

Christian Barker is the winner of the Communication in Engineering-Writing Recognition Award for the 2016 Winter and Summer semesters. The award comes with a $500 prize from the Faculty of Engineering.

Title: The Feasibility of Fibre Reinforced Polymers as an Alternative to Steel in Reinforced Concrete

 

Abstract: The corrosiveness of steel compromises the structural integrity of reinforced concrete (RC) structures and costs the infrastructure industry billions of dollars every year. In response to this, engineers have developed fibre reinforced polymers (FRPs) – non-metallic composite materials of superior strength to be used in place of steel. The three most commonly used FRPs in construction are carbon, glass, and aramid. This paper discusses the feasibility of each FRP as an alternative to steel in RC structures by comparing their mechanical properties, sustainable merits, and costs. Research reveals that while glass FRP is most sustainable, its poor strength and durability render it unusable for most RC applications. Aramid FRP’s strength and durability fell short of carbon’s and it is most expensive. Carbon FRP demonstrates the highest strength, greatest durability, and lowest final costs making it the most feasible FRP to replace steel in RC. Recommendations for future implementation include establishing building codes, improving recyclability and lowering initial costs.

The full text of the paper can be downloaded from the record in eScolarship@McGill, McGill’s institutional repository.

Congratulations to Christian Barker on a well deserved award!