Setting the stage

By The Valletta 2018 Foundation in collaboration with Arts Council Malta

Ask any practitioner of the performing arts in Malta what their biggest cross to bear is, and a veritable list comes pouring out like burning lava. However, once you plough through the expected maladies that plague every small art scene—limited audiences, limited sources of funding available, unctuous reviews—in Malta, you’ll always arrive at this: a lack of viable spaces for productions and rehearsals.Continue reading

3D-Printed knee implants for longer lifetime

Knee pain

Student_robertJCV-0523By Robert Zammit

One of the most common causes of total knee replacements is osteoarthritis, a disease which affects around 40% of Maltese senior citizens. The rise in age expectancy and obesity, compounded by injuries to patients, will see these numbers grow. All of this is expected to increase total knee replacement surgeries by 362% by the year 2030. The need for knee implants to have a longer lifetime is real.Continue reading

How bright?

Milky way

Student_karlJCV-1552By Karl Fiteni

An astronomer’s task is to provide insight into the nature of the universe through the observation of celestial objects. Stars are usually a few hundred, or even thousands, of light-years away—a problematic distance for direct study. Instead, people can study the light emitted by the star rather than the star itself.Continue reading

Piled higher, dug deeper

Triaxial testing rigs are used the world over to experiment on ground materials such as soils, rock, or powders. At the University of Malta (UoM), one such rig started being assembled in 2014 using existing equipment at the Faculty for the Built Environment, modernised with the help of the Faculty of Engineering. The rig is now complete, with plans to test rocks typically found in Malta, simulating the stresses created by big excavations and tall towers, steep slopes and deep underground tunnels.

The laboratory is used to investigate the engineering characteristics of weak ground materials such as clay, silt, sand, and weak rock (turbazz in Maltese building terminology). Space and economic pressures are pushing local buildings deeper and taller without the knowledge of how the local rocks can sustain the pressures created.  Architects and engineers, now more than ever, are being asked to design excavations and buildings in these weak materials.  Abandoning a site for a stronger one is now no longer an option. In-depth understanding of how ground materials behave, therefore, becomes fundamental if dangerous consequences are to be avoided. 

Quick Specs
  • Specimen size: 38mm dia. x 76mm
  • Maximum axial pressure: 220 bar
  • Sensors measuring specimen behaviour during loading: 12
  • Minimum loading speed: 0.00001mm/min
  • Testing control: Fully automated and computer controlled

The equipment is already being used to teach the next generation of architects and engineers. They now have the opportunity to experiment with the local ground materials. They can load them with imagined future buildings or unload them through simulated excavations, all the while observing the real-world effects.

The first real research effort is aimed at understanding what’s going on in Malta’s weak Globigerina limestone, which is currently loaded by heavy buildings. We need to be aware of their internal structure, the water within, how they crush and how long it takes. It’s likely to be a long story, but this is just the beginning.

On Qubes and the pockets that fit them

As far as tech trends go, smaller is almost always better. The team behind the University of Malta’s first ever PocketQube satellite agree-—–except when it comes to their ambitions. Cassi Camilleri speaks to Dr Ing. Marc Azzopardi, Darren Cachia, and Jonathan Camilleri to determine how work is progressing ahead of their 2018 space launch.

Continue reading

Look up↑

Earth is just one planet in a solar system that wanders around a galaxy. Each galaxy is unique in its own right, each composed of its special ration of dust, gas, and endless stars. What unites them all is the mysterious dark sky that they float in: the Universe.

A constantly growing expanse of space and time, the Universe’s attractive gravitational force is currently decreasing while its repulsive force is increasing. This repulsive force is referred to as dark energy. It is pushing galaxies apart at an increasing rate, bringing up a flurry of questions. Why is this happening? How does dark energy work? What is the role of magnetism?

To answer these questions and more requires the right tools. Improvements in instrumentation up until now have enabled astronomers to unveil many mysteries, not only in the visible region of our Universe where human eyes are sensitive to electromagnetic waves, but also beyond. This is done through various means. Optical telescopes, such as the famous Hubble Space Telescope, detect the intensity of incoming radiation in the optical band of the spectrum. Fundamentally, all celestial objects emit electromagnetic radiation, among them radio waves.

The observation of cosmic objects in these radio frequencies is defined as radio astronomy. Because radio waves penetrate dust, scientists utilise radio astronomy techniques to explore undetectable areas of space which cannot be seen using visible light by optical telescopes.

The project is an international effort to build the world’s largest multi radio telescope that will have a total collecting area of approximately one million square metres.

The Square Kilometre Array (SKA) project is the largest project planned for the 21st century. It will see thousands of radio telescopes built in South Africa and Australia. It will enable unparalleled insights into the Universe. The project is an international effort to build the world’s largest multi radio telescope that will have a total collecting area of approximately one million square metres. SKA’s developers are building a system that would operate over a wide range of frequencies, and its size would make it 50 times more sensitive than any other radio instrument. It is set to be able to take images of the sky at up to 10,000 times the speed of current survey radio telescopes.

The University of Malta’s (UoM) contribution to the SKA project is being spearheaded by the Institute of Space Sciences and Astronomy (ISSA). ISSA Founder Prof. Kristian Zarb Adami, Faculty of Science Dean Prof. Charles Sammut, and Iman Farhat are developing an antenna which can be printed like a newspaper and can be rolled out like a carpet.

Unlike conventional antennas which are designed to work optimally at one frequency, the engineering prototype developed at the UoM can sense a large range of frequencies and is capable of running applications such as TV, wireless, Bluetooth, and near-field communications. This was also important because ISSA researchers are trying to detect the first atoms and molecules that were formed at the earliest stages of the Universe. This antenna is also intended to serve as a cost-effective element to cover remote locations for SKA.

The SKA project is scheduled to be built in phases, starting in 2018 and finishing in 2024. Even before the SKA is online, several thousand combined radio telescopes will be collecting and processing data equivalent to 100 times today’s global internet traffic per [unit of time].

The first small scale prototype antenna ISSA built had 256 elements and met SKA’s application and requirements. This was immensely motivating, especially when considering the high standards of this world-wide consortium. The initial success drove home the possibility of further in-depth studies.

ISSA has now embarked on building a large-scale version of the array (funded by the Technology Development Programme of the Malta Council for Science and Technology and Malta Communications Authority). The Malta array demonstrator is an implementation of two antenna arrays. Each array consists of 5,000 elements covering an area of 100 m2. The main aim of this is to test the array in an environment close to its real world conditions. The characterisation of the antenna array radiation pattern is being investigated using a far-field flying source. The system makes use of drones equipped with a transmitter and a dipole antenna that communicates with the array on test. The team is now working on this antenna to ensure a seamless performance.

SKA is a behemoth of a project, involving about 100 organisations across 20 countries. With it, scientists and researchers all over the world will be able to conduct transformational science in astronomical observation, breaking new ground with every step and redefining our understanding of space as we know it.

Key goals include challenging Albert Einstein’s theory of relativity to have a closer look at how the very first stars and galaxies formed moments after the Big Bang. It could also potentially provide an answer to one of the greatest mysteries known to humankind—are we alone in the Universe? SKA-night

THINK BIG: Can Malta produce a Nobel Laureate?

Nobel Medal

by Prof. Godfrey Baldicchino

Iceland (population: 320,000) is proud of writer Halldor Laxness; the even smaller Faroe Islands (pop: 50,000) celebrates its physician and scientist Niels Ryberg Finsen. The combined population of these countries is smaller than Malta’s, yet they have each managed to secure Nobel Laureates: Laxness in Literature in 1955; Finsen in Medicine in 1903. Small size may be a handicap, but—as the Iceland and Faroe examples attest—it is not an insurmountable obstacle. Small size should not prove to be a cheap excuse. So the question is: can Malta produce a Nobel Laureate?

Thinking big can be a powerful motivator. Grand ideas can push publics, enterprises, and governments to achieve the unthinkable. Believe in the impossible, advised the historian Max Weber, and then the possible might just become true. Landing a man on the moon before the end of the decade inspired the US Space Programme in the 1960s. The Live Aid Concerts in 1985 delivered £150 million in famine relief. And the One Laptop Per Child (OLPC) Initiative has equipped 2.5 million children, and counting, across the world.

Malta needs ‘think big’ projects to galvanise the nation. Securing a Nobel Laureate could be one. Developing an underground subway system (and linking Malta to Gozo in the process) could be another. Such projects need not be mutually exclusive. Their trademark would be their ability to engage public opinion, foster national pride, and raise the game to the next level. Naturally, people will continue to talk about politics, the weather, the traffic, the guy or gal next door… but also about these grand accomplishments. Of course, these projects will be controversial; they will have as many sympathisers as dissenters and critics. So? What’s new? That is how it should be.

Securing our political independence was one such dream for the 1960s. Bringing an end to our fortress economy was another aspiration for the 1970s. Joining the European Union was a third. Valletta Capital of Culture for 2018 may be a fourth and is an active project. What’s cooking in the Kitchen of Big and Bold Ideas for Malta for the next few years?

We need to think ahead. Apathy is dangerous, and we need big ideas to keep it at bay.

By the way, St Lucia (population: 150,000) has not one, but two Nobel Laureates: Arthur Lewis for Economics in 1979 and Derek Walcott (born in 1930, still alive at the time of writing) for Literature in 1992.