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The Future of Food

About one in six people suffer from dysphagia, a medical term that means difficulty swallowing. Symptoms can include pain, gagging and an inability or reluctance to eat, and while the condition can develop at any age, it’s most common amongst older adults.

Dysphagia can lead to weight loss and other negative health outcomes resulting from inadequate nutrition, which is a concern for anybody with a diminished appetite, such as seniors or people who are receiving treatment for cancer.

This challenge is one of the reasons why a team of researchers at Carleton University, led by Food Science professor Farah Hosseinian, are using a 3D printer to explore a new frontier: high-tech food manufacturing.

A group of people standing together for a photo inside a laboratory.
Carleton University Food Science professor Farah Hosseinian (third from left) alongside her research team: Winifred Akoetey, Seun Davies and Minfang Luo (Photo by Terence Ho)

Their project involves combining layers of proteins, grains, fruits, vegetables and sugars, or various combinations thereof, to make food that’s more palatable and pleasing to people with dysphagia or other eating related ailments. Most of the work is taking place in Carleton’s Food Design Lab, a glassed-in space adjacent to what looks like a conventional kitchen in the university’s new Abilities Living Laboratory (ALL).

The goal of the 3D printed food research meshes with ALL’s overarching mission — to design, prototype and test innovations for people with disabilities that support full inclusion in public and cultural life. Eventually, volunteers (for instance, a group from a local retirement home) will be able to come to the lab and sample some of the team’s culinary creations.

“We’ll have the ability to experiment and create nutritious foods with different visual, textural, structural and olfactory attributes,” says Hosseinian.

“Food is something that’s important from the time you’re born until the end of your life. We all need to eat, and when we can’t, it has a significant impact on our quality of life.”

Experimenting with Ingredients and Texture

Hosseinian, a biochemist, began her career doing research on how to derive value-added products from agri-food waste. For instance, some of the “leftovers” from winemaking, such as phytochemicals — compounds found in plants — could be beneficial because of their antioxidant and anti-inflammatory properties.

This led to a collaboration with an Ottawa-based food manufacturing company that produced frozen purées for hospitals across Canada. A common issue with purées is that when they’re heated, they can become too runny, which can cause choking.

A researcher creating 3D printed meals using a 3D printer.
Photo by Terence Ho

One solution, according to Hosseinian, is to experiment with ingredients and texture to create safe and nutritious alternatives.

“It’s important to develop modified foods that are suitable for populations that have trouble eating,” she says.

“We can work on the physical characteristics of various foods and add things like dietary fibre and probiotics.”

The 3D printer that will be set up in her lab this spring will be a food-grade machine. Instead of using ink, edible resins or pastes made from a mix of ingredients — powders combined with water and/or oil — are dispensed through the nozzle. Companies are already demonstrating 3D printed pizza and other foods at tech trade shows; taste tests are promising.

Carleton researchers will be using other advanced equipment in their lab, including a texture analyzer — basically, a probe that’s lowered into a substance — that can determine particle size and particle size distribution.

“We need to understand the physical and rheological characteristics of the foods that we make because this will affect their sensory qualities and mouthfeel,” says Hosseinian.

“Part of our lab may resemble a kitchen, but there’s a lot of physics, engineering and chemistry taking place beneath the surface.”

Researchers working on 3D printed food for astronauts.
Winifred Akoetey and Minfang Luo demonstrate the lab’s texture analyzer (Photo by Terence Ho)

3D Printed Meals for Astronauts

Beyond producing food for people who need help or encouragement to eat, this research has other applications. NASA and other space agencies are looking into 3D printing as a way to provide sustenance to astronauts, for example.

High school cafeterias could be equipped with 3D printers, suggests Hosseinian, serving a population that eats a lot but doesn’t necessarily make the healthiest choices.

Long-term care homes could also have 3D printers. A resident craving a veggie pizza could make a meal within minutes, at the touch of a button. Manufacturing baby food or pet food are also possibilities.

“What we’re really talking about is a future food system,” says Hosseinian, who predicts that some of these technologies could be in use within a couple years.

“Our goal is to make food that’s safe to eat, more appealing and more nutritious. Everybody should enjoy eating.”


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Stopping Infectious Diseases

Ebola is one of the most virulent diseases on the planet. Spread through contact with the bodily fluids of somebody who is infected, its symptoms can include fever, muscle pain, vomiting, diarrhea and internal and external bleeding. The average fatality rate is an astonishing 50 per cent.

When an outbreak begins, health organizations rush to contain the disease while treating patients. Quick intervention can save lives and reduce transmission. But in remote areas, including rural communities in sub-Saharan Africa, where the disease is most common, it can take two to six weeks to set up a mobile clinic.

This was the motivation for the launch of INITIATE², a five-year initiative bringing together emergency response actors and research and academic institutions to create innovative and standardized solutions to health emergencies. The first project developed under this program is an Infectious Disease Treatment Module (IDTM), with researchers from Carleton University, a member of the World Health Organization’s Téchne network, contributing to its design.

Carleton University industrial design program director Chantal Trudel and students working in the design lab of the Abilities Living Laboratory

The IDTM is a rapidly deployable patient-focused treatment centre designed to enhance the quality of medical care, infection prevention and control, patient comfort and community acceptance.

Supported by Grand Challenges Canada, Carleton industrial design program director Chantal Trudel and her team are focusing on one of its key elements: a transparent plastic screen separating health-care workers in “a low-risk zone” from patients in a contaminated “high-risk zone.” A glove box allows doctors or nurses to reach inside to treat a patient, performing “high acuity” procedures such as intubation without getting exposed to pathogens.

Among other features are a slider to safely pass medical supplies into the high-risk zone without air escaping, and a cable management system for safely feeding cables and tubing through the screen.

This setup, Trudel explains while demonstrating a prototype inside Carleton’s Abilities Living Laboratory, allows health-care workers to see patients and quickly treat people in distress while their colleagues don personal protective equipment to provide more comprehensive care. Patients can see care providers on the other side of the screen, as well as family members a safe distance away, which helps make the experience less traumatic.

“This is not only an effective way to curtail outbreaks of hemorrhagic viruses, it’s also a more humanitarian approach,” says Trudel.

“Health-care design has traditionally been driven by a biomedical-focused approach, but now innovations are focused on family- and community-centred models, even in the most challenging areas like infection prevention and control.”

An aerial view of a large gold-sided building
Carleton’s state-of-the-art ARISE (Advanced Research and Innovation in Smart Environments) Building, home to the new Abilities Living Laboratory

Simulation Exercise a Success

At a simulation exercise held late last year in Accra, Ghana, an IDTM with all of the required medical equipment was set up in one day.

Trudel took a series of prototypes to Accra to demonstrate the transparent screen, which was refined and further evaluated in February at the United Nations Humanitarian Response Depot in Brindisi, Italy.

“When you’re doing health-care design,” says Trudel, “you’re constantly thinking about the footprint and volume of the space and putting every single piece of medical equipment, furniture and feature in an ergonomic position.”

Moreover, the Carleton team — which includes industrial design master’s students Ben Tripp and James Lee, undergraduate Kennedy Chan, and alumni research assistants Martin Eisert and Shaghayegh Kalantari — must keep in mind the “manufacturability” of every component.

“Most of the components have such a specialized function that currently they are all custom-made — none are off the shelf,” says Trudel. “Every detail matters.”

A group of students, researchers and a professor posing for a photo.
Left to right: alumni research assistant Shaghayegh Kalantari, undergraduate student Kennedy Chan, Industrial Design program director Chantal Trudel, and master’s students Ben Tripp and James Lee

Focus on Functionality and Positive Impact

To give communities dealing with outbreaks better access to systems like this, the design blueprints for the transparent screen will all be open source and many of the parts will be able to be 3D printed. Design files will be freely available so health agencies can fabricate the screens on their own and install them as needed to supplement existing health infrastructure.

“This is a unique, outward project because we want it to be accessed by as many people as possible,” says Tripp.

“It’s really rewarding to be working on improving the experiences of patients and clinicians in very challenging circumstances.”

“This is exactly what I want to do,” says Lee. “At the end of the day, we’re trying to have a positive impact on people’s lives.”

“We’re designing an environment for people who are in extreme distress,” says Chan, “so we had to create a space that’s as comforting as possible.”

“But it also has to be functional,” says Kalantari, whose role involved creating a virtual reality model of the treatment module.

“So many different elements have to come together for this to be effective.”

And for an innovation like this to succeed, so many different people have to come together first.

A team conducting simulations to stop infectious diseases.
Trudel and the team conducting a simulation inside the Abilities Living Laboratory


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Reforming Global Apparel Supply Chains

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In the 1990s, Nike was outed for using sweatshops and child labour to make shoes. In April 2013, an eight-story commercial building collapsed on the outskirts of Dhaka, Bangladesh, killing more than 1,100 people, mostly garment workers.

Incidents like these were eye-openers for many western consumers and exposed some of the dangerous and exploitive labour practices in the developing world, where multinationals could be unaware of — or ignore — worker safety concerns among their suppliers and sub-suppliers.

A woman with long hair and glasses, wearing a business coat, smiles for the camera with her hands in her pockets.
Carleton University international business researcher Jinsun Bae

But the drive to produce “fast fashion” at low prices doesn’t mean brands can afford to turn a blind eye to the well-being of workers, argues Carleton University international business researcher Jinsun Bae. Moreover, because of the risk of consumer backlashes, apparel companies and their suppliers are often early adopters of responsible practices.

As scrutiny from regulators, customers and investors becomes more sophisticated, Bae says that companies must implement more socially responsible business practices to remain commercially viable.

Their challenge involves navigating complex global supply chains and figuring out what — and how — to change.

Codes of Conduct

Many multinational companies now have internal codes of conducts. But because these standards are often focused on first-tier suppliers that assemble the final product, not second-tier suppliers that make the fabric or third-tier suppliers that harvest raw materials, they don’t always trickle down through the entire system.

Ensuring that suppliers comply with these codes is difficult. For instance, some suppliers are required to pay for their own third-party audits, undermining audit objectivity and transparency.

A group of men labouring in a textile factory.
Photo by Chris Bucanac / iStock

Bae’s research involves analyzing labour compliance audit data from apparel factories and talking to both managers and workers to better understand local pressure points and the on-the-ground impact of a brand’s internal regulations.

“External auditors can easily determine whether there are enough fire extinguishers in a factory,” she says.

“But can they tell whether there has been discrimination in hiring practices? Or if unions can operate without fear of reprisal from management? And how thorough are their reports?”

Multinationals need to raise the bar and enhance the quality of their audits, says Bae, and enforce their codes of conduct consistently. They should also look for ways to support suppliers that are willing but lack the necessary resources to improve their compliance.

Supporting Social and Economic Development

Despite the potential for exploitation, the apparel industry can support economic and social development in many countries, says Bae. Developing countries often see export-oriented production as a way to boost earnings and improve incomes for people, which exposes both workers and companies to risk.

“If something goes wrong in a factory and the media or an NGO find out, the product buyer will get blamed for working with that supplier and both could face huge consequences,” says Bae.

“This can encourage a commitment to address at least the most critical problem.”

A row of white shoes being manufactured inside a factory.
Photo by panpote / iStock

Unpredictable production orders are one issue her research has uncovered. A single garment factory might be under contract to multiple buyers. If one of those buyers puts in a large rush order, managers might pressure workers to meet unreasonable deadlines or hire extra untrained workers who don’t understand safety protocols.

“More progressive buyers are starting to share their production plans with suppliers,” says Bae, “so factories can map out how to manage production and make sure they have enough trained workers on hand.”

Government regulations are also pushing companies to develop and adopt practices to prevent exploitation. More laws are being passed in North America and Europe that will compel companies to keep a closer eye on their lower-tier suppliers.

“The European Union recently passed the Corporate Sustainability Due Diligence Directive,” says Bae.

“Large companies operating in Europe — not just European companies — will have to demonstrate what they’re doing to identify, avoid and mitigate forced labour and other human rights violations in their supply chains.”

An overhead view of a large clothing factory, at the heart of the global apparel supply chain.
Photo by Liuser / iStock

By visiting apparel manufacturers in Asia and including the voices of workers in her research, Bae is hoping to have an even greater impact. Traditionally, business school research has focused on corporate perspectives and financial data, while worker issues were the domain of labour relations or development studies.

“I’m trying make these different fields talk to each other,” she says, “so we have a deeper understanding of the whole situation and can come up with more effective solutions.”


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Improving Radiation Therapy

Nearly 45 per cent of Canadians will develop cancer at some point in their lifetime and one in five will die from the disease.

Radiation therapy, which uses beams of intense energy to kill cancer cells or shrink tumours, is one of the most effective treatments. It’s been in use for more than a century and, although refined over the years, can cause significant side effects, such as fatigue, hair loss and nausea, among many others.

This is one of the reasons why a group of Carleton University researchers, led by physicists Rowan Thomson and Sangeeta Murugkar, are working on a multidisciplinary project to learn more about the impacts of radiation at a cellular level.

A woman leans against a railing while posing for a professional photo.
Carleton University physics researcher Rowan Thomson

Their research aims to improve radiation therapy, enhance the use of radiation as a diagnostic tool and help protect people such as nuclear power plant workers and x-ray technicians from low-dose exposure.

Ultimately, their goal is to develop a novel system for evaluating radiation energy deposited in cells and the associated cascade of biological events. This will not only be preventative, minimizing side effects and the risks of exposure, but could also lead to more personalized treatment.

“About half of all cancer patients will undergo radiation therapy,” says Thomson.

“In general, we don’t have a good understanding of the effects of low doses of radiation. If we can improve our knowledge, we’ll be in a better position to plan and evolve treatments. Anything we can do to improve radiation therapy has the potential to affect many, many Canadians.”

Determining the Correct Dose

One of the more challenging aspects of radiation therapy is determining the correct dose to give to a patient. If doctors are treating breast cancer, for instance, the dose must be strong enough to target the tumour but not so intense that it burns the surrounding skin.

To calculate dosage more accurately, Carleton researchers are zooming in to micron-scale resolution and studying how individual cells respond to radiation. This requires an all-hands-on-deck approach.

First, Carleton students “culture” cells — growing them in a controlled environment — in Health Sciences researcher Edana Cassol‘s lab. Next, the cells are irradiated at the National Research Council in Ottawa’s east end and brought back to campus, where a chemical analysis technique called Raman spectroscopy is performed in Murugkar’s lab. This provides an experimental map of how cells respond to radiation, with Carleton bioinformatics researcher Sanjeena Dang analyzing the results.

A headshot of a short-haired woman wearing glasses, with equipment in the the background.
Carleton University physics researcher Sangeeta Murugkar

This project is supported by the federal New Frontiers in Research Fund, which facilitates high-risk, high-reward collaborations, and also involves partners at Health Canada.

Murugkar, a medical physicist at Carleton, is an expert in light-matter interactions. She is focused on developing new optical tools for the rapid detection, treatment and monitoring of diseases such as cancer.

“We are building optical instruments and developing data measurement and analysis methods,” says Murugkar.

“This will tell us, at a very microscopic scale, which cells have been exposed to ionizing radiation.”

A Step Toward Personalized Treatment

Beyond further refining radiation therapy, Murugkar sees tremendous potential for a “laser spectroscopy system” as a diagnostic tool to monitor the response to radiation treatment.

It typically takes around two weeks to get biopsy results back from a lab. Even a frozen-section biopsy, which is done during an operation to help guide surgeons, can take half an hour.

A doctor and patient interacting.
mediaphotos / iStock

But Murugkar envisions a system that uses short pulses of light to determine in “near real time whether the tissue in question is responding to radiation treatment — whether a tumour is shrinking.”

Compact, user-friendly tools like this, she says, could be deployed in a diagnostic lab or a clinical setting.

“They can really help inform decision making. That would be a huge step in the right direction.”

It could also lead toward personalized treatment.

Everybody responds to radiation differently, according to Thomson, yet current therapies are essentially one-size-fits-all. They don’t account for how sensitive to radiation an individual patient is.

But what if, she asks, a sample of cancerous tissue could be irradiated and the cellular response assessed by the type of unobtrusive technique the Carleton team is developing?

“You could look at the response to the radiation and use that information to inform the treatment,” says Thomson.

“That would really help personalize the treatment. This would be a new level of care and protection. Right now, it’s just a research scenario. But imagine if we could do this one day. That’s why this is such meaningful work.”

A woman with short hair and glasses working with an unidentifiable piece of equipment.


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Reducing Food Waste

Almost half of all food produced in Canada goes to waste. That’s more than 21 million tonnes every year, worth a staggering $58 billion. Around the world, about one billion meals a day are squandered, waste that’s responsible for 10 per cent of global greenhouse gas emissions.

Some of this loss occurs in household fridges and restaurant kitchens. Crops rot or are ravaged by pests. “Best before” dates send products to the trash bin when they are still safe to consume. One farmer in Nova Scotia reportedly plows under 40 per cent of his cauliflowers because they’re the wrong size or colour for supermarkets. Factor in the impacts of climate change on agriculture — drought in some regions, flooding elsewhere — and it’s even more difficult to keep grocery prices under control.

A scientist with his hands in his lab coat, smiles for the camera while standing inside a lab.
Carleton University food science and biochemistry researcher Tyler Avis (Photo by Melanie Mathieu)

Carleton University food science and biochemistry researcher Tyler Avis and Leanne Keddie from the Sprott School of Business are tackling food insecurity from different directions. But their goals are the same: help prevent hunger, make businesses more efficient and ensure that the resources put into growing, processing and distributing food don’t go down the drain.

Reducing Spoilage

Reducing spoilage is one the most effective things we can do to improve access to healthy and affordable food, says Avis, whose team is exploring the use of beneficial microorganisms to outcompete the bacteria, viruses and fungi that damage or destroy plants.

This biocontrol method promises to protect crops and extend the shelf life of produce. At the same time, it may reduce our reliance on synthetic chemical pesticides that are common in agriculture but have negative impacts on our health and the environment.

For example, rather than use soil fumigants, which essentially kill everything that might harm crops but leave a void that other harmful pests or pathogens can fill, beneficial microorganisms create a more balanced environment in which plants can prosper.

In his lab, Avis has been looking at different strains of Bacillus bacteria and other microorganisms. They can be put into one side of a Petri dish with a mould on the other; if the mould stops growing, the strain is a good candidate for further investigation.

A scientists hands and arms can be seen sorting through samples of unidentified substances.
Photo by Melanie Mathieu

He also does experiments in farm fields, greenhouses and storage units. Tomatoes, carrots, potatoes, strawberries and other produce can be sprayed with solutions containing non-toxic microorganisms to see if the exposure extends the amount of time they remain edible.

“Using microorganisms that are already in the environment is a more nuanced approach,” explains Avis. “We’re just potentially adding more of them to create a slightly different system.

“When you’re talking about food security, you also have to consider the harmful chemicals that we use to grow and protect fruits and vegetables, which are partially destroying the planet. There has to be a better way.”

Better Measurement, Better Management

The adage “what gets measured, gets managed” is a guiding principle for Keddie. Her research revolves around “sustainability accounting,” which encompasses a business’s many impacts on society and the environment, not just its finances. She’s also interested in the idea of a circular economy, which, according to Canada’s federal government, repurposes and recycles products and materials as much as possible and is rooted in “using valuable resources wisely [and] thinking about waste as a resource instead of a cost.”

One major contributor to food waste, Keddie explains, is that supermarkets don’t keep close tabs on their losses. Leading a multidisciplinary Social Sciences and Humanities Research Council-funded project, she conducted interviews with 60 grocery stores and learned the term “shrink,” which covers everything from spoilage, spillage and theft to expiring items that are either donated or thrown out.

A woman sits on a leather chair to pose for a professional photo, while wearing a white sweater, dark pants and a smartwatch.
Carleton University accounting professor Leanne Keddie

There’s no line item differentiating between discarded and stolen food, and in some cases, it’s more profitable to throw out aging baked goods than to sell them at a reduced rate because customers get “trained” to wait until the end of the day for discounts.

Shrink leads to higher operating costs, which are passed onto the consumer. But without more detailed accounting, stores can’t identify where to make improvements that could help feed people while improving the bottom line.

Accounting can be used to either hide or expose a problem, says Keddie.

“Do we call something ‘two-per-cent shrink’ or do we say ’48 million meals’? You have a different visceral reaction to those two phrases.”

Although their project is still underway, Keddie and her collaborations have started to brainstorm solutions. For example, streamlined access to financing for social enterprises that freeze, dehydrate and redistribute food before it expires. Or adjustable display cases to make cauliflowers of all shapes and sizes attractive to shoppers.

“Nature has a really good circular food system, but humans messed it up,” says Keddie, whose research aims to inform government policy that could incentivize waste reduction and investors motived by more than financial returns. “If we can figure out how to reform this system, maybe those learnings can be applied to help other industries transition to a circular economy.”

Three scientists wearing face masks - two standing and one seated - working inside a science lab.
Photo by Melanie Mathieu


Lead image by Elena Alex Photo / iStock

Supporting Social Work in Somalia

For many Somalis, daily life in their homeland is complicated and, at times, dangerous. The country in East Africa has experienced an ongoing civil war since the 1980s. Drought frequently devastates crops and more than six million people currently face extreme levels of hunger. There have also been reports of an increase in sexual and gender-based violence, including domestic violence and child abuse.

Beyond the struggle for basic necessities such as food and safety, people experience trauma resulting from these humanitarian crises. In Somaliland, an autonomous but internationally unrecognized region in northern Somalia, limited resources, including a lack of mental health services, make this challenge more acute.

That’s why a small group of Somali-Canadian graduates from Carleton University’s School of Social Work helped Somaliland’s University Of Hargeisa create the country’s first social work program more than a decade ago.

A woman with a black shirt, glasses and a green scarf smiles for the camera.
Carleton social work professor Nimo Bokore (Photo by Amy Lam)

Since then, about 550 students have earned bachelor’s degrees and gone on to provide trauma-informed psychological care. At the same time, they are breaking the stigma around seeking mental health support.

With a new master’s degree in social work set to launch, the University of Hargeisa aims to graduate researchers, mental health professionals and social policy specialists who can provide advanced counselling and inform government policies, a way to help some of the region’s most vulnerable people on an even broader scale.

“There is a lot of social injustice in Somalia, especially among women and children, and no strong support system,” says Nimo Bokore, an Ethiopian-Somali social work professor at Carleton who chairs the committee responsible for the university’s continued support of the Hargeisa program.

“Social work and Somali culture are a match made in heaven because caring for your community is something that comes naturally. There just wasn’t a formal training structure in place.”

Financial Support for Social Work in Somalia

Between 1988 and 1996, more than 55,000 Somali refugees came to Canada to escape the conflict at home, with over 7,000 settling in Ottawa. By 2011, the capital’s Somali community included about 20,000 people, many of whom were born in Canada.

The challenge of adjusting to life in a new country and a desire to give back prompted several Somali-Canadian students to study social work at Carleton. One of them, Asha Roble, joined up with four other students to start a conversation with university officials in Hargeisa, the capital and largest city in Somaliland.

A large group of people sit around a large table, a screen projecting text can be seen in the background.
Prof. Bokore takes part in a roundtable about social work education in Somaliland

Carleton’s School of Social Work provided financial and fundraising support, donated textbooks and helped the University of Hargeisa develop a social work curriculum. Fifty students enrolled in the first cohort, about three-quarters of them women, and like most of the graduates since the program started, they now work for local and government agencies as well as civil society and international organizations.

Providing counselling in hospitals, orphanages, schools and clinics, Somalia’s first generation of social workers are helping a wide range of clients, including people living with mental illness and other disabilities, youth experiencing homelessness, internally displaced people and survivors of sexual violence.

Teaching Social Work in Somalia

“We teach social workers how to sit with and listen to people, how to ask questions about the problems they are facing,” says Hargeisa professor Keltun Abyan.

“They learn how to provide talk therapy and tackle these problems. Now, there is more recognition of the roles that social workers can play. We are overcoming the social taboo.”

“People who are impacted by violence are often silenced by the culture in Somalia, but our new master’s program will help give them a voice,” adds Mukhtar Mohamed Abby, dean of the university’s College of Social Sciences and Humanities. “As government institutions create policies about issues like child protection, our master’s graduates will be able to provide recommendations. We can help the country develop regulations.”

A large group of Somali social work students posing for a graduation photo with a large banner hanging behind them.
Faculty and alumni from the University of Hargeisa’s social work program

Bokore’s latest research in the region identifies an urgent need for mental health services to address depression, anxiety and traumatic stress disorders. It also shows that social work is becoming more accepted, and she says the new master’s program could expand services even further.

“Carleton’s social work program has a clinical stream and a policy stream,” explains Bokore, who plans to teach a master’s course in Hargeisa, as will a Carleton PhD student.

“I want to help because that’s where I’m from. But I also want to help because social workers are flexible and wear different hats, no matter what country we’re in.”


Lead image by Vadim_Nefedov / iStock

Humanizing Artificial Intelligence

Artificial intelligence is a powerful tool that can enhance our lives in many ways, but it has significant limitations and poses serious risks.

These limitations include bias and a lack of ethics. Among the risks are social manipulation, economic instability and, worst-case scenario, autonomous weapons run amok.

Carleton University cognitive science researcher Mary Kelly, who runs the Adaptive Neuromorphics, Intelligence, Memory and Unified Systems (ANIMUS) Lab, is addressing these types of challenges on several different fronts.

One of the reasons the architects of AI systems struggle with these issues, she says, is an inability to accurately replicate what happens inside the human brain.

A woman with a pink cardigan and black shirt poses for a professional photo in front of a building.
Carleton University cognitive science researcher Mary Kelly (Photo by Terence Ho)

Artificial neural networks are a type of AI technology — layers of interconnected nodes that resemble our brains. Think of these neural networks as the brains that control AI robots.

You can train a robot how to perform a surgery, for example, and once it has mastered this skill, you can teach it how to fill out pharmaceutical prescriptions. But if you then ask it to operate on a patient, it will have forgotten how to complete this task.

This problem is the result of a phenomenon known as “catastrophic interference,” the tendency of an artificial neural network to lose previously learned information when it picks up something new. This restricts a neural network’s ability to develop iteratively over time. People learn and grow by navigating the day-to-day world, but a neural network that learns something today forgets everything it learned yesterday.

“There’s no single silver bullet,” says Kelly, whose background includes machine learning, cognitive psychology and computational linguistics.

“But basically, we’re trying to help develop neural networks that can do multiple things at the same time.”

Solving ‘Catastrophic Interference’

Artificial neural networks experience catastrophic interference because they are essentially a single entity that gets retrained again and again. The neurons that have been taught how to perform a surgery, Kelly explains, are re-allocated to filling prescriptions.

One solution that she and students Eilene Tomkins-Flanagn and Maria Vorobeva are exploring is “functional specificity,” a neuroscience concept which holds that different parts of the brain specialize in different functions.

Another is an attempt to replicate “holographic memory systems,” which is rooted in the idea that neurons throughout human brains fire in concert with each other to encode our data-rich memories and thoughts.

A doctor in scrubs and a digital overlay on top.
Photo by ipopba / iStockPhoto

If these approaches are used to inform the design of artificial neural networks, the AI systems they power could become better equipped to handle the wide variety of tasks we throw at them in the years and decades ahead.

Kelly and her students write code for artificial neural networks, run simulations to test AI systems and compare the results to experiments that other researchers have conducted using human subjects.

Ultimately, their goal is to help build more human-like and more effective artificial neural networks, which, in turn, will deepen our understanding of how the brain works.

Reducing AI Risks

The ANIMUS Lab team is also exploring some of the risks around AI, including an issue rooted in the “cobra hacking” problem.

Venomous cobras were a concern in colonial India, so the British government put a bounty on the snakes, prompting citizens to start farming and killing cobras for the payoff.

The AI corollary, Kelly explains, is a robot paramedic that’s rewarded when it brings injured people to a hospital. What’s to stop it from hurting people so it has more patients?

Robotically controlled arms performing surgery.
Photo by ekkasit919 / iStockPhoto

That’s one of the questions being investigated by undergraduate research assistant Taran Allan-McKay, whose work is probing the moral decision making of AI agents and how choices made by these systems can be improved through attention to ethical and safety considerations.

PhD student Spencer Eckler, meanwhile, is looking into “causal reasoning,” which is defined as “the use of logic and facts to determine cause and effect relationships.” This process could deter a robot paramedic from intentionally causing car accidents because it understands the outcome.

The threat to democracy posed by disinformation and “corporate greed” are two of AI’s biggest dangers, according to Kelly.

“The prospect of a robot with a gun,” she adds, “really scares me.”

One way to mitigate these risks is a human-in-the-loop approach, in which people vet AI decisions to ensure they’re appropriate. Kelly is working on a National Research Council-supported project to explore how AI systems can make better decisions and also explain these decisions.

“There are a lot of fears around the future of AI and I share many of those fears,” she says, “but there are also a lot of potential benefits to society, especially if we can develop better systems.”

A person touching a digial touchscreen while holding a stethoscope.
Photo by ipopba / iStockPhoto

Waste Not, Want Not

One of the biggest contributors to the climate crisis is our throw-away society.

From household waste and single-use plastics to byproducts from food production, we burn fossil fuels and spend money to truck our “garbage” to landfills and processing facilities, where some of it releases greenhouse gasses or pollutants into the environment as it breaks down.

The circular economy represents an alternative to this culture of disposability, a system in which materials are reused or regenerated as much as possible.

Tapping into this idea, Carleton University researchers Abid Hussain and Eugene Fletcher are developing new technologies for converting various types of waste into biofuel and valuable chemicals — and demonstrating a pathway to a more sustainable future.

Biogas for Electricity, Heat or Fuel

Hussain, a professor in Carleton’s Department of Civil and Environmental Engineering, led waste-to-energy and climate change mitigation projects at prominent institutions such as the United Nations and Asian Development Bank before coming to the university.

A professional photo of a scientist.
Civil and environmental engineering researcher Abid Hussain (Photo by Chris Snow)

In his main laboratory on campus, a collection of custom-designed bioreactors — with components such as vessels, gauges, sensors and heating or cooling systems — display the range of research that he and his talented graduate students are doing.

In one anaerobic (or oxygen-less) digestor, microorganisms help break down conventional green bin waste and generate biogas. Typically, the gases released from this process would be about 55 per cent methane. But by introducing a special set of microorganisms and zapping the material with electrons, Hussain has increased the methane concentration to about 80 per cent — a viable product that could be used to generate electricity, heat buildings or fuel vehicles.

In collaboration with a small company in the Northwest Territories, Hussain is also experimenting with operating this digestor at lower temperatures, which could be a boon in northern communities where waste decomposes slowly and the cost of supplying propane for fuel is extremely high.

“Instead of sending food waste to the landfill, where it not only releases greenhouse gases but also attracts wildlife, we could use it to produce renewable energy,” he says.

“That would help both budgets and sustainable waste management practices.”

Green bin waste is only part of Hussain’s research program. In another type of reactor — a fermenter — he is looking to derive useful chemicals from the remnants of corn that has been used to produce ethanol.

“You can optimize the design of a reactor and the conditions inside the reactor to channel towards a particular chemical,” he explains.

Corn leftovers can be used to make acetic acid and butyric acid, for example, which are used in pharmaceutical manufacturing, as solvents and as building blocks for biodiesel, perfume and other cosmetics.

“It’s more than just lab work,” says Hussain, who is partnering with his industrial collaborators to develop these technologies at a pilot scale.

“The insights we’re gaining are intended for real-world application.”

Tackling Plastic Pollution

Carleton biology researcher Eugene Fletcher is also aiming to produce biofuel from waste, and he’s tackling plastic pollution at the same time.

Less than 10 per cent of the four million tonnes of plastic thrown out every year in Canada is recycled.

Fletcher’s solution involves “editing” the genes of yeast, a single-cell fungus that’s best known for its ability to convert sugars into carbon dioxide and ethanol, a key step for making both beer and bread.

A group of scientists having a discussion inside a lab.
Carleton University biology researcher Eugene Fletcher with students Hannah Doyle and Sara Takalloo (Photo by Chris Snow)

By introducing new DNA through heat shocking yeast, he essentially gives it new instructions, so it recognizes plastic compounds as a source of carbon and converts this “food” into ethanol.

“Some bacteria can break down plastics naturally, but they require very stringent and expensive growth conditions and cannot easily be scaled up to an industrial level. Yeasts are easy to grow and engineer.”

Fletcher acquires yeasts from suppliers, similar to how a baker or brewer would, and grows them in his lab in glass tubes containing vitamins, minerals and sugar. The yeasts are then heated to 42°C, which opens up their pores, allowing them to absorb the new instructions he designed.

Like Hussain, he is also working with byproducts from the dairy industry and with plant waste, reengineering yeast so it converts these sugars into propionic acid, which is used as a preservative in animal feed and to make some cosmetics.

“When you break down corn husks or wheat bran or even forestry waste, the basic structure of their building blocks is like that of some plastics,” Fletcher says. “It doesn’t matter that one grows naturally and one’s plastic — at a chemical level they are similar. And all of this can be transformed into biofuels or other valuable products.

“The big picture is that we’re trying to help solve a major societal problem. But we’re also developing new tools and learning new science.”

A professional photo of a researcher inside a laboratory.
Biology researcher Eugene Fletcher (Photo by Chris Snow)

Fast-Tracking Drug Therapies

Drug development is a complex, costly and time-consuming process.

To ensure that pharmaceuticals are safe and effective, the interval between a laboratory breakthrough and a therapy that’s ready for clinical trials can be a decade or more.

That long wait is no comfort to patients who are suffering from debilitating or potentially deadly medical conditions. The price of new treatments can also be a bitter pill for families.

But a pair of Carleton University researchers are playing key roles in promising efforts to accelerate health advances from the lab to the market and, at the same time, make some meds more affordable.

Scientists working in a lab to research drug therapies.
Photo by Chris Snow

Biochemists Kyle Biggar and Jeff Smith both work with startup companies based in Carleton’s Health Sciences Building. These collaborations, supported by local biotech accelerator Capital BioVentures, are focused on springing off university research to swiftly improve health outcomes for people across Canada and beyond.

From Bench to Bedside

Biggar works with peptides, short, Lego-like chains of amino acids that can be used to target problems within cells, and to treat cancer, metabolic disorders and illnesses caused by microorganisms.

Biggar and his group test peptides created by his Carleton engineering colleague Jim Green‘s AI algorithm to determine which ones have the potential to target problematic cells. Once these candidates are identified, the team conducts wet-lab experiments to validate their computational models and then selects therapeutic candidates, a step toward medical use.

This is where NuvoBio comes into the picture, moving its head office onto Carleton’s campus in fall 2024. The company, co-founded by Biggar and former Corel Corporation CEO Michael Cowpland, expedites the development of peptide therapeutics.

A biochemist poses for a photo for an article about researching drug therapies.
Carleton University biochemist Kyle Biggar (Photo by Chris Snow)

“To bring innovation closer to patients,” Biggar says, “we’ve teamed up with an exceptional Canadian entrepreneur to bring our medicine from bench to bedside.”

NuvoBio’s development pipeline includes peptides that show potential in oncology and infectious diseases. But for now, the company is concentrating on a product called NeoPeptix that’s effective at treating Cryptococcus neoformans, the pathogen that causes fungal meningitis and is responsible for 20 per cent of all HIV-related deaths globally.

Early preclinical tests indicate that NeoPeptix is significantly more potent than available therapeutics. NuvoBio is aiming to submit a request for authorization to begin clinical trials to the U.S. Food and Drug Administration by 2027.

“Often, a researcher will make a therapeutic lead, then publish a paper or maybe patent it, but they don’t know where to go next,” says Biggar.

“We’re motivated to translate scientific discovery into practical healthcare solutions.”

‘Fixing’ Faulty Genes

Like peptide therapeutics, gene therapy is a rapidly evolving medical technique that’s used to treat diseases and conditions such as cancer, cystic fibrosis, diabetes and AIDS. It can involve exposing a patient to a virus that “fixes” the faulty gene at the core of the ailment and then stops replicating itself.

These viral medicines are difficult and very costly to manufacture.

A dozen years ago, Carleton’s Jeff Smith helped longtime collaborator Jean-Simon Diallo from the Ottawa Hospital Research Institute develop a set of molecules that enhanced the growth of viral medicines. That advance prompted Diallo to co-found a company that has developed a line of proprietary cell enhancers to increase the yield and improve the quality of viral medicines.

A biochemist poses for a photo inside a lab for a story about researching drug therapies.
Carleton University biochemist Jeff Smith (Photo by Chris Snow)

Virica, which is located beside NuvoBio, is successful, according to Smith, because its technology has the potential to reduce the financial barriers to effective treatments.

Smith specializes in mass spectrometry, analyzing the chemical composition of substances and how their molecular structures change over time, a technique that’s central to the creation of drugs for a wide range of conditions and is a crucial part of Virica’s process.

This collaboration also gives Carleton students a chance to contribute to leading-edge research and, potentially, to step into jobs after graduation — “a seamless transition between environments,” says Smith.

“The opportunities for this type of medicine are phenomenal,” he adds.

“It’s great to help industry solve analytical challenges, but there’s an extra layer of gratification in making grassroots scientific discoveries with another researcher and seeing that turn into a company that’s helping produce advanced therapeutics.”

Companies like Virica and NuvoBio, which are ultimately dedicated to ensuring that patients have access to safe, effective and lower-cost treatments as quickly as possible.

An over the shoulder view of a scientist using a microscope.
Photo by Chris Snow

Safeguarding Newborn Health


Certain footage in this video was generously provided by CHEO, a pediatric healthcare and research centre in Ottawa, and by the National Research Council Canada.

Every year in Canada, approximately 15,000 newborns are admitted to neonatal intensive care units (NICUs). Whether premature births or full-term babies with pressing medical conditions, they are among the most vulnerable patients in the country’s health-care system.

Because these newborns are in a precarious state, they must be monitored extremely closely, with sensors tracking vital signs such as heart rate, respiratory rate and blood oxygen level so nurses and doctors can take immediate action at the first indication of trouble. Sometimes, despite their fragility, babies have to be transferred from one location to another, such as when they require a specialized type of treatment.

To help ensure that babies are monitored as effectively as possible in the NICU, and that newborn transport is safe and smooth, Carleton University engineering researchers Jim Green and Rob Langlois are collaborating with CHEO, a pediatric healthcare and research centre in Ottawa, on a pair of cutting-edge projects.

Ultimately, their work is about upholding the health of the tiniest humans by allowing clinicians to focus on providing world-class care.

A fake baby lays on a blanket for a promotional photo shoot for safeguarding newborn health.
Photo by Chris Snow

A New Approach to Monitoring Vital Signs

The conventional way to monitor a baby’s vital signs in the NICU is via wired sensors attached to the fingertip, chest and other body parts. All those wires can make it difficult for parents to hold their newborns, even though skin-on-skin contact provides important benefits

Moreover, for various reasons, including patient movement disrupting sensors, roughly half of the alarms they trigger are false. This makes the NICU a loud and busy place, which is stressful for both families and staff who have to respond to all the beeping and ringing. (A baby’s vitals will often temporarily deviate from “normal,” so the alarm should sound, but it should be ignored if the baby’s condition improves on its own.)

In partnership with CHEO, Systems and Computer Engineering researcher Jim Green and his team of a dozen graduate students have developed a new approach: a pressure-sensitive mat that goes under the infant and an advanced imaging camera positioned above the baby’s isolette or crib.

The mat, which resembles a simple black bedsheet, detects time-varying contact pressure. This data, when processed using machine learning, can estimate respiration rate and interpret the meaning of certain movements. The camera can analyze colour changes on the baby’s face and skin and estimate heart rate and other vitals.

A professional headshot of a man in a business office.
Systems and Computer Engineering researcher Jim Green (Photo by Chris Snow)

“The mat is so sensitive that as the baby breathes, even though it’s just a slight bounce on the mattress from the chest rising and falling, we can extract the respiration signal from all the noise and get an estimate of respiration rate,” says Green.

“These non-contact sensors enhance the capabilities of traditional wired sensors by adding layers of context, even when a baby is covered in a blanket. This information could change how clinicians interpret alarms and care for their tiny patients.”

This approach could also be extended to home care. “Imagine a scenario where a premature baby has been discharged but still requires monitoring,” says Green. “Instead of being tethered to wired sensors, the baby can be comfortably nestled in a crib equipped with non-contact sensors, creating an opportunity for parents to scoop them up without being tangled with wires.”

A group of four people dedicated to safeguarding newborn health.
Carleton engineering researcher Rob Langlois (second from right) with, from left to right, students Michael Avarello, Keely Gibb and Natasha Nayar (Photo by Chris Snow)

Minimizing Vibration and Noise During Transit

When a newborn needs to be moved between health-care facilities, specialized pediatric transport teams follow strict protocols. In Ontario, they use the Neonate Patient Transport System, which features an isolette augmented with a ventilator, medical air, infusion pumps, monitors, a defibrillator and several other devices.

But even though the baby is secured within a five-point harness and the 400-pound unit is latched onto a stretcher, the vibration and noise in an ambulance or airborne helicopter can pose health risks.

Mechanical and Aerospace Engineering researcher Rob Langlois and his team at Carleton’s Applied Dynamics Laboratory do experiments on all sorts of vehicles in motion, from cars and buses to fire trucks and ships.

“We’ve got lots of experience with the dynamics of objects and human bodies in moving environments,” he says.

“Whether it’s a helicopter secured to the deck of a rolling ship or a stretcher secured in an ambulance, they share a lot of the same issues.”

A man in a blue dress shirt poses for a photo in front of a staircase.
Mechanical and Aerospace Engineering researcher Rob Langlois (Photo by Chris Snow)

Working with CHEO, Toronto’s SickKids, the National Research Council of Canada and other partners, Langlois is exploring ways to reduce exposure to vibration and noise for newborns in transit.

To date, they have conducted a range of lab and field tests, shaking, rotating and vibrating medical equipment made for transporting infants — or, in some cases, shaking an entire ambulance with a stretcher, medical equipment and patient manikin inside to simulate driving along various road types.

By looking at variables such as how patient transport equipment is designed and secured in vehicles, they are aiming to reduce the vibrations and sound experienced by patients and to develop novel approaches for real-time monitoring.

“This work will improve infant safety during medical transportation,” says Langlois, “and find ways to mitigate noise and vibration exposure and improve health outcomes.”

Although this project is ongoing, the researchers already have a deeper understanding of how vibration transmits through the patient transport systems and how effective several approaches could be toward mitigating vibration exposure.

Jim Green and fellow Carleton Systems and Computer Engineering researcher Adrian Chan are also involved in this research, and though it’s different than the NICU monitoring work, the overarching goal is the same: giving sensitive babies the healthiest start possible.

A man working on a laptop.
Photo by Chris Snow

Remapping and Remembering

As Indigenous elders age, the original placenames used to navigate the land we live on in Canada run the risk of being lost to time.

To ensure this important information is remembered, recorded and shared within Indigenous communities and beyond, Carleton University researcher and alumna Rebekah Ingram created the Atlas of Kanyen’kehà:ka (Mohawk) Space in collaboration with Kahente Horn-Miller,  associate professor in Carleton’s Institute of Interdisciplinary Studies.

The project uses digital technology, drones and other tools to create a map where areas are labeled with Kanyen’kehà:ka placenames, all in an effort to revitalize the language itself and enrich the way we experience and understand these spaces.

A woman wearing glasses and a black tank top poses for a photo near the bank of a river.
Carleton University researcher and alumna Rebekah Ingram (Photo by Brenna Mackay)

Alongside Akwesasne-based community researcher Ryan Ransom, Ingram and Horn-Miller are working in close collaboration with Kanyen’kehà:ka communities. They are speaking with elders and holding summer camps in Akwesasne where local youth can explore the land and add photos, videos, notes and stories to help build out the atlas.

“The kids have so much fun, and so do we,” says Ingram, who received messages from parents after last year’s camp sharing that their children were now proudly able to do things like identify plants using Kanyen’kehà:ka words.

“We get to watch language learning happen in real time.”

Learning Language Through the Landscape

This summer will mark the project’s third youth camp in Akwesasne – a Mohawk Nation territory located at the intersection of multiple international and provincial borders whose very existence demonstrates how most maps fail to accurately reflect – and, more often than not, intentionally divide apart – Indigenous territories.

The idea for the summer camps came from Ryan Ransom, a STEM educator who works with Akwesasne high school students. Ransom says he’s made a habit of collecting and researching Kanyen’kehà:ka words for much of his life.

“It’s a different way of approaching language revitalization in our community,” says Ransom.

“We can use placenames and this project to teach about history, our connection to the land and the surrounding environment.”

A map of indigenous placenames
Screen image of the Atlas of Kanyen’kehà:ka (Mohawk) Space

At last year’s summer camp, researchers, campers and community members used aerial and underwater drones to view the land from different vantage points. This is crucial because Indigenous placenames are contextual to the land itself – a river will be named “Little Fish River” for instance, to indicate that the water is shallow and therefore only contains certain smaller species of fish.

As a result, Indigenous placenames contain information and clues that help us understand how a place was historically and culturally used, what the land itself used to look like, and track environmental changes in flora, fauna and topography over generations.

“Each name is this huge bundle of knowledge that’s at risk of being lost due to language endangerment,” explains Ingram.

“It’s like a ball of yarn and you don’t know what it’s attached to until you follow the trail through historical research, talking to people and going out on the land yourself.”

Importance of Indigenous Data Sovereignty

The atlas itself – which currently contains 198 pins and 188 media files and counting – grew from Ingram’s doctoral work in the School of Linguistics and Language Studies at Carleton.

“Linguistics should be supporting language revitalization work, and traditionally we have not been very good at that,” she explains. “The words on the pages of my thesis just weren’t doing the language and these placenames justice.”

This led to her connecting with Kahente Horn-Miller, an expert in Haudenosaunee-specific research and pedagogical practices and a researcher in Carleton’s Institute of Interdisciplinary Studies.

A woman wearing traditional indigenous clothing smiles while posing for a photo.
Institute of Interdisciplinary Studies Associate Professor Kahente Horn-Miller (Photo by Dave Chan)

“Borders and the reserve system created lines and barriers for Indigenous people,” says Horn-Miller.

“Through this project, as an Indigenous person, you start to see things in a different way, and you begin to better understand our relationship with the land.”

The project also taps into the crucial topic of Indigenous data sovereignty – the right of Indigenous peoples to access, control and own the knowledge generated about their communities and histories.

To ensure data sovereignty, rather than relying on popularly used platforms like Google or Apple Maps, the base map layer featured in the atlas was built from scratch using spliced satellite imagery and the atlas itself is hosted through Carleton’s Geomatics and Cartographic Research Centre.

“Many people don’t know this, but when you input anything into Google or Apple Maps, you can lose ownership of that data,” Horn-Miller explains. “It’s incredibly problematic, because this knowledge inherently belongs to the Kanyen’kehà:ka people.”

With another summer in Akwesasne already on for 2024, the researchers hope to one day bring the youth summer camp model to Horn-Miller’s community of Kahnawake. They also plan to host more workshops with Indigenous elders to continuing sharing and discussing placenames.

“The really incredible aspect of this whole project is that we’re developing a methodology for revitalizing languages that really works and can be applied anywhere in Canada or around the world,” says Horn-Miller.

“It’s all about reinvigorating and preserving our understanding of the places where we live and engage with.”

A street sign that says: Welcome to Akwesasne 'Sekon'
Traffic enters the Akwesasne Mohawk Reservation on NY Rt 37 (Photo by ErikaMitchell / iStock)

Revolutionizing Drones with 5G

A natural disaster that knocks out communication infrastructure, a remote search and rescue operation, or an investigation into the condition of an unstable building – these are just a few examples of challenging situations that could be aided by the use of civilian drones.

Uncrewed aerial vehicles (UAV) can quickly move into and through spaces that are dangerous or remote. These machines are becoming increasingly popular, with one industry report estimating the global commercial drone market will reach a value of $54 billion by 2030.

To date, the range of these drones has been limited by the operator’s direct line of sight. If the drone goes too far or an obstacle like a building or hill gets in the way, the signal is lost and the operator loses control. As a result, the distance of the drone’s flight can be restricted to just a few kilometres – significantly curtailing the drone’s theatre of operation.

To address this problem, Carleton University researcher Michel Barbeau and his team from the School of Computer Science are harnessing the power of 5G and the Internet of Things to revolutionize the control and range of drones.

A man in a black sweater and glasses poses for a photo.
Carleton University researcher Michel Barbeau

“Traditionally, the reach of a drone was limited,” he says.

“Now, with 5G base station technology, it can be anywhere in the world.”

5G Offers New Possibilities for Drones

Barbeau’s research focuses on quadcopter drones, which are agile machines that can fly both horizontally and vertically.

“They can perform many kinds of tasks,” he says. “They can be used to deliver parcels or carry a camera. The machines can hover and stay in one location for a period of time.”

Part of the Ericsson-Carleton partnership to expand experiential learning and research in wireless communications, Barbeau’s project uses 5G technology to expand the range and operational possibilities of civilian drones.

As more drones take to the air and widespread drone-delivered parcels becomes a more realistic scenario, enhancing the operator’s control of UAVs is critical for ensuring public safety.

“With poor network quality, control of a drone could be lost,” says Barbeau.

“In that event, the drone could collide with buildings or vehicles, so losing control could be dangerous.”

The underbelly of technology used to power 5G drones.

The emergence of 5G is opening doors for long range networks as the near instantaneous speed of the bandwidth – known as low latency – allows for real-time control of the drones throughout the wireless network.

Base Station Web Expands Range

The drones are connected through a series of base stations, relaying signals across long distances.

“Before you lose coverage with one base station, it will hand over the communication to another base station – like regular cellular communications,” says Barbeau. “It’s similar to holding a conversation on your phone while travelling along a highway.”

The new drones themselves can act as a base station, further expanding the web of communication. The mobile nature of the drones and their ability to relay messages make the potential communication range almost limitless.

This base station network can have massive impacts when an event like a natural disaster knocks out existing communication networks, or when critical infrastructure – such as a bridge or pipeline – needs to be investigated for structural damage.

“With these drones, you can deploy a base station to cover an area very quickly.”

As drones become more popular, base stations can also support overloaded communications networks during surges in demand.

Three people pose for a photo while holding up a drone.
Barbeau with Carleton students Fatemeh Banaeizadeh and Pravallika Katragunta from the School of Computer Science

“A temporary base station can be added to the network to serve more users,” says Barbeau, noting that the machines are ideal for the urban environment where drone activity for parcel delivery may become the norm.

Global Signal Security with 5G

Beyond speed, 5G offers a high level of security – ensuring that the operator remains in control of the machine without disruption and no matter the location.

As the drones fly over great distances and relay information to users, the ability to maintain confidence in outgoing and incoming communication is essential.

“With 5G, we can guarantee the origin of the control messages, as well as the security of the data that is produced by the drone,” he says.

Secure sharing of data is critical as 5G expands the possibilities of how different machines can communicate using the Internet of Things.

“The previous goal with networks was mainly to provide mobile communications to people,” says Barbeau. “5G connects not only people, but also things such as drones and sensors.”

Three people sitting at a table with a laptop and other electronic equipment in front of them.


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