Four reasons why we should not forget about Ebola

Author: Dr Raquel Medialdea-Carrera

Dr Raquel Medialdea-Carrera

When was the last time you heard about the Ebola virus? Many of you may recall Ebola dominating headlines in global news throughout 2014 and 2015 when it spread explosively across West Africa, claiming more than 11,300 lives.

For the last few years, Ebola has been my focus, passion, and dreaded nightmare rolled into one. In 2015, I joined a wonderful team of physicians, nurses, and scientists, that were leading the fight against Ebola in Sierra Leone. We worked in Ebola hospitals isolating patients and supporting survivors of the virus’ worst epidemic in history. Then, the World Health Organization (WHO) declared that the outbreak was over in 2016. News stations stopped covering our progress. Discussions about the disease dwindled. But the fight to eradicate Ebola was far from over. 

Since August 2018, an Ebola epidemic has spread across the Democratic Republic of Congo (DRC), affecting over 2,000 people and becoming the second largest epidemic ever recorded. Over the last few weeks, I have joined the WHO to support the fight against it in Africa.

The latest Ebola outbreak in Congo is affecting people who were already suffering from a major humanitarian crisis. People in the DRC are devastated by years of violence and conflict, resulting in the largest displacement emergency in Africa. Four and a half million are currently fleeing their homes. With over 100 different armed groups in the country, the challenge of ending this Ebola outbreak is on a whole new level. But still, there is hope.

Over the last few years, researchers have toiled hard and developed a powerful vaccine against the Ebola virus. This vaccine is still under evaluation, however, the preliminary results show a wonderful efficiency of over 97.5%. Even so, we have to remain aware. Ebola is a cruel, painful death sentence for most people who get infected, and leaves in its wake a trail of broken families, hundreds of orphans, and shattered hospitals. It decimates economies and destroys societies, leading to even more poverty and hardship. This is why we cannot forget about Ebola.  

Enter the swarm

Author: Jean Luc Farrugia 

Jean Luc Farrugia

Once upon a time, the term ‘robot’ conjured up images of futuristic machines from the realm of science fiction. However, we can find the roots of automation much closer to home.

Nature is the great teacher. In the early days, when Artificial Intelligence was driven by symbolic AI (whereby entities in an environment are represented by symbols which are processed by mathematical and logical rules to make decisions on what actions to take), Australian entrepreneur and roboticist Rodney Brooks looked to animals for inspiration. There, he observed highly intelligent behaviours; take lionesses’ ability to coordinate and hunt down prey, or elephants’ skill in navigating vast lands using their senses. These creatures needed no maps, no mathematical models, and yet left even the best robots in the dust. 

This gave rise to a slew of biologically-inspired approaches. Successful applications include domestic robot vacuums and space exploration rovers. 

Swarm Robotics is an approach that extends this concept by taking a cue from collaborative behaviours used by animals like ants or bees, all while harnessing the emerging IoT (Internet of Things) trend that allows technology to communicate.

Supervised by Prof. Ing. Simon G. Fabri, I designed a system that enabled a group of robots to intelligently arrange themselves into different patterns while in motion, just like a herd of elephants, a flock of birds, or even a group of dancers! 

Farrugia’s robots in action.

I built and tested my system using real robots, which had to transport a box to target destinations chosen by the user. Unlike previous work, the algorithms I developed are not restricted by formation shape. My robots can change shape on the fly, allowing them to adapt to the task at hand. The system is quite simple and easy to use.

The group consisted of three robots designed using inexpensive off-the-shelf components. Simulations confirmed that it could be used for larger groups. The robots could push, grasp, and cage objects to move them from point A to B. To cage an object the robots move around it to bind it, then move together to push it around. Caging proved to be the strongest method, delivering the object even when a robot became immobilised, though grasping delivered more accurate results.

Collective transportation can have a great impact on the world’s economy. From the construction and manufacturing industries, to container terminal operations, robots can replace humans to protect them from the dangerous scenarios many workers face on a daily basis. 

This research project was carried out as part of the M.Sc. in Engineering (Electrical) programme at the Faculty of Engineering. A paper entitled “Swarm Robotics for Object Transportation” was published at the UKACCControl 2018 conference, available on IEEE Xplore digital library.

https://www.facebook.com/ThinkUM/videos/493872941442263/

Saving the Maltese freshwater crab from extinction

Author: Clayton Sammut

Clayton Sammut

A considerable amount of endemic species inhabit the Maltese Islands. The Maltese freshwater crab (Qabru in Maltese) is one of them. In the 50s, the invertebrate was so abundant that freshwater crab soup was a common Maltese delicacy. And up until Malta adopted the Euro, it graced the Maltese five cent coin. The Maltese freshwater crab is unique to our heritage, but it is now threatened with extinction. 

Under the supervision of Dr Adriana Vella and the University of Malta’s conservation research group, I used various population and biological parameters to analyse the data and produce conservation recommendations.

To estimate the crab population size and density, I used two techniques known as the capture–recapture method and distance sampling in a number of repeated surveys in different sites throughout the dry (August to mid-September) and wet season (October to January). I then measured the crabs to determine their life stage and sex. This revealed more information about the reproductive population size and recruitment at each study site.

What we found was that there was an imbalance in the number of female to male breeding adults, which resulted in a small amount of offspring. This means the population cannot sustain itself, putting the species in grave danger.

Beyond health and numbers, we also directed attention to the crabs’ natural habitat. We wanted to find out whether hydrological and chemical parameters, such as water depth and water acidity, are also having an impact. As it happens, the freshwater crab’s population density is affected significantly by a water stream’s depth, width, velocity, and acidity (pH). We also found that specific sites and seasons also had an impact.

Direct water extraction, excessive use of fertilisers, and water stream channelisation are creating severe drought that suffocates the crabs during summer. So much so that adult male crabs were seen preying on their own juvenile crabs.

Looking at the rapid decline of watercourses around the Maltese Islands throughout the years, and the abuse that goes ignored and unchecked, the freshwater crab will not have a future unless we act immediately.

There are three things that we can do to undo some damage. We can fund research to determine if a reintroduction programme would work in sites which previously hosted the crab. We can also create new engineered habitats which can host the crab and bolster the population. Finally, the highly diverse habitats that are now hosting the crab can be turned into protected nature reserves. The nature reserves could engage citizens with Maltese organisms. If run as a social enterprise, it could generate funds to support important research. Protecting the animals that call our islands home is our duty as responsible citizens, but it goes beyond that. Protecting them means protecting our surroundings, our home, from a path that severs us from our roots. Protecting them is protecting ourselves. 

Voices for freedom and choice

Author: Dr Alexander Clayman

Dr Alexander Clayman

Abortion is a criminal offence in Malta. This means Maltese women who wish to end their pregnancy have severely limited choices. Those more affluent can pay to terminate their pregnancy abroad. Those who do not have the money can either continue the pregnancy against their will or terminate locally under unsafe conditions, risking both their health and freedom. 

Any woman who undertakes an abortion potentially faces three years in jail. Anybody who assists, such as a doctor, could also be sentenced to four years behind bars. This flies in the face of best medical practice which states that safe abortion services should be accessible to women who need them. 

A few weeks ago a group of doctors, including myself, came together to set up Doctors for Choice Malta in order to advocate for sexual and reproductive health. This includes comprehensive sex education (NOT abstinence-only education) and access to free contraception (condoms, pills, and intrauterine devices). Increased use of contraception alone results in fewer unwanted pregnancies and subsequent abortions. Putting contraceptives in the hands of comprehensively sex-educated individuals can do even more. This said, abortion still needs to be available to those people who need it. 

As a doctor, I feel I have a duty to use my knowledge and skills to better my community’s health. Together with Doctors for Choice, we are basing our efforts not on opinions or morality, but on years of medical and sociological research which shows that sex education, contraception, and accessible abortions make a society healthier. 

The irony was not lost on me when comments accusing me of being a baby-killing-mad-axe-murderer-who-doesn’t-understand-what-a-real-doctor-is started rolling in. Luckily for me, forewarned is forearmed, and the negativity failed to penetrate very deep. 

What did strike me was the contrast between the way people communicate their derision and their support. Abusive comments come in fast, prominent, and loud. Supportive comments are usually sent in private. At present, it’s clearly very easy to be openly anti-choice, but very difficult to be openly pro-choice. 

To those afraid to raise their voice and speak the truth, I say: whatever dogma, tradition, or a battalion of angry keyboard lieutenants might tell us, those who advocate for reproductive choice have nothing to be ashamed of. We are on the right side of history. 

Read more: Marston, C., & Cleland, J. (2003). Relationships between Contraception and Abortion: A Review of the Evidence. International Family Planning Perspectives, 29(1), 6. https://doi.org/10.2307/3180995

Stanger-Hall, K. F., & Hall, D. W. (2011). Abstinence-Only Education and Teen Pregnancy Rates: Why We Need Comprehensive Sex Education in the U.S. PLoS ONE, 6(10), e24658. https://doi.org/10.1371/journal.pone.0024658

Paintings in motion

Vince Briffa’s contribution to the Venice Biennale in 2019 is OUTLAND. An audio-visual piece inspired by The Odyssey, a story intimately linked to the Maltese islands’ own folklore, the work unfurls over many layers.

On one level, it explores the lure of safety and the numbness that can bring—exhibited through Ulysses’ portrayal, who is caught in a bubble of his own making. ‘The plastic room replaces the island from the story, presenting a different interpretation,’ explains Briffa. Here, it is Ulysses’ own mind and thoughts that keep him trapped. 

The character of Calypso is also a reflection of the theme MALETH—port and safe haven. ‘She is both a lover and oppressor,’ Briffa says. ‘Calypso offers a haven for Ulysses during the seven years he spends harboured in her cave. But he is also her prisoner.’

Finally, there is fragmentation and distortion to create new from old. Penelope is Ulysses’ waiting wife, torn between longing for her husband’s safe return and an uncertainty she secretly harbours—is that even what she truly wants? Her presence in the work comes through the use of Emmanuel Mifsud’s poem Penelopi Tistenna (‘Penelope waits’). For Briffa, the Maltese language helps the story ‘take on a different life.’

The work’s duality is apparent. Images are juxtaposed against one another. One can observe two characters simultaneously, living their own truths and challenging each other. However, the conflict is not structured. ‘It’s a contemporary art piece, not film. There is no story. It’s more of a painting. I am, myself, a painter first,’ Briffa notes. 

So for those who find a narrative in this piece, know that it is uniquely yours. The question now is: will you share it?  

To watch and read more about OUTLAND visit www.vincebriffa.com 

Redesigned hip joints need a simulator

People are living longer than ever. But a long life has its price. With age come more diseases and health issues, such as hip problems that can limit a person’s mobility. 

Hip replacement procedures have become common, although implants have a lifespan too. It might happen that a hip replacement you get at 60 needs to be replaced at 75. This is not the ideal scenario.

To minimise these cases, researchers are testing new materials and designs to prolong prostheses’ lifespans. These potential solutions need to be tested, but each test costs tens of thousands of euro. Enter, the University of Malta’s hip joint simulator.

Hip joint simulator in all its glory.

The hip joint simulator is a machine that replicates the joint movements and loads imposed on the human hip. To do so, the simulator uses three stainless steel frames, each of which can be controlled independently using motors. These motors act as the ‘muscles’ of the hip, programmed to replicate the walking cycle during testing.

When it comes to simulating load and forces, a mechanism can load the implants with weights of up to 300kg in a fraction of a second. This emulates what happens while walking, when the weight of the body rests on one leg due to the body’s shift in the centre of gravity. While running, inertial forces can cause the hip to sometimes take five times a person’s body weight.

Finally, to simulate the environment inside the human body, researchers use a specialised solution that mimics the bodily fluids surrounding the hip joint. They even warm the fluid to imitate body temperature. 

The hip joint simulator forms part of the MaltaHip project that intends to radically redesign hip implants to give them the longer lifespan patients want and need. Watch this space for more.  

The MALTAHIP project is funded by the Malta Council for Science and Technology through FUSION: The R&I Technology Development Programme 2016 (R&I-2015-023T).