Archive for the Covid-19 Category

Testing Times

Posted in Biographical, Covid-19 with tags , , on April 12, 2020 by telescoper

Today is April 12th which means, astonishingly, that it’s just one month since Ireland went into the first stage of its current lockdown. I say “astonishingly” because it seems much longer ago than that!

I know I’m not the only person who is finding it difficult these days to keep track of the passage of time. The lack of a regular routine seems to be the reason. The solution, I imagine, is to try to impose a timetable on yourself rather than have it imposed upon you by someone else. I’ve only been partially successful in that, probably because I lack the necessary self-discipline. Still, somewhat to my surprise, I am not having any significant problems sleeping.

Anyway talking about testing times, I wanted to make a quick comment on the Covid-19 situation in Ireland. I’ve been keeping track of the statistics on my page here, which I shall continue to update as things develop. The latest plot is as follows.

The last two points in the orange curve show a bit of a spike. That is because they include the results from a batch of about 6000 swabs sent for testing to Germany. These should be apportioned to earlier dates but lacking the information needed to do this in a sensible way I’ve just plotted them when the results were received (Friday and Saturday). This also means that the slight inflection in the blue curve is not real, but it doesn’t change the general picture significantly.

This is a manifestation of a major difficulty that the authorities in Ireland are facing, which is the capacity to do coronavirus testing in sufficient numbers and sufficiently rapidly to enable contact tracing in real time which is needed to further control the spread of this disease. At present only around two thousand tests per day are being done, which is inadequate.

Although the recent upward blip is an artefact, the fact remains that there is no evidence that the number of new cases is reducing sufficiently quickly for the relaxation of the rules to be considered feasible. There is a real danger that if the number of new cases does not stop falling soon, the number of patients needing intensive care will exceed the resources available.

Anyway, I reckon things will stay as they are until June at the earliest, so we’ll just have to get used to it!

What works with Online Teaching?

Posted in Covid-19, Education, Maynooth with tags , on April 8, 2020 by telescoper

Since the cancellation of in-person lectures and tutorials at Maynooth University a few weeks ago, we’ve all been trying – mostly without much a priori knowledge – how to teach students using exclusively online methods.

In the Department of Theoretical Physics we’re all trying different things and trying our best to learn from student feedback how to improve.

Maynooth University recently launched a survey of students that was completed by about 3000 in 24 hours, which is a very good response.

The results are very interesting. When asked what works best for them the responses were:

  1. 39% prefer PowerPoint with sound;
  2. 27.2% prefer recorded video or screencast;
  3. 18.6% prefer text materials (Word/Pwpt); and
  4. 12.2% prefer live video or screen cast.

I’m sure that there is no single “best” way of doing this. What works will depend a lot on the discipline (and the kind of material to be presented) and on the lecturer (and how comfortable they are with different approaches), as well as on the student.

I’ve always felt that students being different individuals all learn in different ways so the best approach is to offer as broad a mixture of approaches as possible in order to try to offer something for everyone.

For my part what I’m doing is making a PDF of the lectures available for the students to study in their own time, but also record short (15-minute) recorded video explainers of the key concepts using a piece of software called Screencast-o-matic.

Here’s a still from one of my Computational Physics videos:

You see they get the notes with a pointer moving about on it as I talk, but also have to endure an encapsulated video of me waving my hands and blabbering on, for that authentic lecture experience.

The video and audio is not ideal because of lighting and background sound issues in my flat which is why I felt keeping the recordings short would be useful.

I recorded the one shown above (and several others) before I figured that it works better to use the natural light coming in through the window than electric lighting. That means that I now do my recordings in the morning, when I can face the sunlight in my sitting room.

I should add that we also have a laboratory for this course. The students are given a script to work through then some (Python) coding exercises to complete. They have to do these at home but myself and a demonstrator are online via Microsoft Teams to assist the students who can share screens and output files to help us diagnose any bugs.

Anyway, what works for you?

Assessment at a Distance

Posted in Covid-19, Education, Maynooth with tags , , , on April 4, 2020 by telescoper

In the light of the Covid-19 restrictions currently in place, Maynooth University has issued updated guidance to students about the rest of the Semester.

Of particular concern to students is what will happen to their examinations, usually held in the second half of May.

Here the guidance begins:

The university examinations will not take place this semester in the usual format. The examinations will be replaced by remote assessments, including assignments, timed remote assessments and in some cases video interviews. As far as possible assessments will be completed by the scheduled dates. We plan to have resit examinations in August as usual.

There has been a lot of work and discussion going on behind the scenes to come up with ways of doing without the usual in situ examinations and the solutions proposed will no doubt vary considerably from discipline to discipline.

In the case of Theoretical Physics the vast majority of our examinations will be in the form of a timed assessment as mentioned above. What this means is that a test of similar format to the usual examinations will be made available in the form of a pdf file for students to download at home at a specific time. They must then scan and upload their answers, within a given time limit, extra time being added to formal duration of the assessment to allow for doing this.

There are two main potential difficulties with this approach.

One is that the students will not be invigilated and may cheat, either by referring to notes or other material (e.g. online) or by colluding with others. I believe the former risk can be mitigated (a) by the time limit and (b) by designing an assessment that emphasises problem-solving rather than rote learning (which, frankly, is what we should be doing anyway). Collusion is more difficult to deal with but we can at least require students to make a declaration that the submission is their own and reserve the right to interview afterwards.

The second (and, I believe more serious) source of difficulty is on the side of the student. This approach will require students to have somewhere at home where they can do the test, as well as access to the Internet and a scanning device of some sort. They will only have to download a relatively small pdf but the upload may cause problems. A scanned pdf would be easier to upload than, for example, pictures taken using a phone camera (which may be rather large files).

Still, given that there is a period of six weeks before these assessments are due to take place, I hope the vast majority of students will be able to put appropriate arrangements in place. We can also provide a dummy test so they can check that everything works satisfactorily.

These proposals are not ideal, but few things can be in the situation we are in. I do think this is a reasonable approach for our students because at least it means they can prepare using past examination papers knowing that the timed assessment will be similar in form. I think dumping an entirely new and unfamiliar kind of assessment on students now, at a time of already high stress, would have been grossly unfair.

Winging IT

Posted in Biographical, Covid-19, Education with tags , , , , , on April 2, 2020 by telescoper

The current restrictions resulting from the Covid-19 outbreak have forced many of us academics to adapt to using IT in ways we hadn’t even imagined just a month ago. It’s not only remote teaching via virtual learning environments with live and/or prerecorded video lectures, but also meetings held by videoconferencing platforms such as Zoom or Microsoft Teams.

Few of us have had much training in the use of these things, so when it comes to Information Technology we’re all winging it. Still, necessity is the mother of invention and we just have to get on with it.

I’m gradually getting used to Microsoft Teams, for example. I’ve even got proper kit to wear.

Incidentally, yesterday I learned that the expression ‘to wing it’ actually comes from the Theatre, where it alludes to an actor studying their lines in the wings (at the side of the stage) because they haven’t had time to learn their part before the performance (usually because they are replacing another actor at short notice).

Nowadays ‘winging it’ means generally improvising or making it up as you go along. I’m finding winging it to be rather hard work but quite fun, actually. While we’ve been trying to flatten the Covid-19 curve the learning curve has definitely been getting steeper.

On Boredom

Posted in Biographical, Covid-19, Television with tags , , on April 1, 2020 by telescoper

During this time of isolation and social distancing I’ve noticed how many people are posting messages on social media about being bored.

Conscious that I am in danger once again of being excluded from a popular cultural phenomenon I have been trying recently to join in this craze. Unfortunately whenever I try to experience a bit of boredom I find there is far too much to distract me.

There’s working from home, of course: lecture recordings to make, notes to prepare, assignments to correct, virtual meetings to attend, papers to write, and so on

But outside of work it’s just as difficult. Whenever I try to interrupt my day with a bit of boredom I find that there’s so much music to listen to, so many books and newspapers to read, so many crossword puzzles to solve so many other things to do, that I always get distracted and fail dismally.

Perhaps it is the fact that I don’t have a television set that makes me such a failure? It seems that there may be a strong correlation between possession of a TV and being susceptible to boredom. Perhaps if I bought one I could be more like normal people?

Anyway, never let it be said that I don’t know when I’m beaten. That is why I am asking readers of this blog for help. Could anyone who is expert in being bored please send tips on how to achieve it? I’d be quite interested in your suggestions.

Your advice through the comments box would be greatly appreciated as I fear that without it I may always remain a social outcast.

P. S. Before anyone says it: if you are yourself struggling to get bored you could try reading through the back catalogue of posts on this blog!

The Goats of Llandudno

Posted in Covid-19 on March 31, 2020 by telescoper

If you’ve ever been to the seaside town of Llandudno in North Wales, you’ll know that there are mountain goats living on the nearby headland known as the Great Orme. Well, the streets of Llandudno are very quiet right now because of the Covid-19 measures and the goats have come down into the town to investigate!

(I got these pictures from Stuart Maher on Twitter.)


Flattening the Covid-19 Curve in Ireland

Posted in Covid-19, Maynooth with tags , , , on March 31, 2020 by telescoper

Last night a statement was issued by Ireland’s National Public Health Emergency Team (NPHET) , accompanied by a press conference part of which is shown below.

On the right is the Chair of the Irish Epidemiological Modelling Advisory Group (IEMAG), Professor Philip Nolan, who gives a very clear explanation of the situation, especially with respect to the uncertainties in data and modelling. Professor Philip Nolan is President of Maynooth University.

Coronavirus in Ireland – the Latest!

Posted in Covid-19, mathematics on March 28, 2020 by telescoper

Just a quick post to point out that I’ve set up a page on which I’m tracking the number of cases of Covid-19 in the Republic of Ireland.

I intend to keep the data on that page up to date as information is announced by the HSE and won’t do lots of updates as posts. I thought I’d show the latest figures here though.

The second (log-linear) plot is perhaps more informative. It shows some evidence of a flattening compared to an exponential curve. The plot in green is an exponential with a time constant of 3.5 days; it’s not a fit to the data, it’s just there to show what exponential growth would look like on such a plot (ie a straight line).

Health and Safety

Posted in Biographical, Covid-19 with tags , on March 28, 2020 by telescoper

Among the additional measures introduced last night to combat the spread of Coronavirus in Ireland was the cancellation of all non-essential medical appointments.

Looking at my diary I realise that I was due to have a checkup on my knees next Friday. That won’t be happening now I suppose.

It’s about three months since I had steroid injections in both knees to halt the arthritis therein. The jabs were quite painful but worked very well and I have been able to dispense with the use of a walking stick since I had them.

The effect of these injections only lasts a few months so I was due an inspection to see if I might further ones in the near future. I think I’m doing OK, however, and I’m sure the hospitals have more important things to be dealing with right now, so I don’t mind the deferral at all.

Although I haven’t really needed my walking stick recently I think I might start carrying it again on the rare occasions I go out during the ‘lockdown’ – so I can hit people with it if they get closer than 2m from me.

Everything is going to be all right

Posted in Covid-19, Poetry with tags , , on March 27, 2020 by telescoper

This evening the (acting) Taoiseach Leo Varadkar announced further restrictions as a result of the Coronavirus outbreak in Ireland, meaning that most of us are now confined to our homes for at least the next 14 days.

Remarkably, the main news on RTÉ this evening responded to this announcement with a reading of this poem by Irish poet Derek Mahon.

How should I not be glad to contemplate
the clouds clearing beyond the dormer window
and a high tide reflected on the ceiling?
There will be dying, there will be dying,
but there is no need to go into that.
The poems flow from the hand unbidden
and the hidden source is the watchful heart.
The sun rises in spite of everything
and the far cities are beautiful and bright.
I lie here in a riot of sunlight
watching the day break and the clouds flying.
Everything is going to be all right.

by Derek Mahon