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Paul Harper has been at 1 events

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Chris Hadfield1,994,286That's right, ladies and gentlemen. There will be a Google+ hangout on air from the International Space Station. Learn more here: http://www.nasa.gov/home/hqnews/2013/feb/HQ_13-042_ISS_Google_Hangout.htmlSpace Station Google+ Hangout (On Air)2013-02-22 16:00:00632  

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Activity

Average numbers for the latest posts (max. 50 posts, posted within the last 4 weeks)

8
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1
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414
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Top posts in the last 50 posts

Most comments: 13

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2015-03-20 10:27:01 (13 comments, 0 reshares, 23 +1s)Open 

Perfect conditions for the solar eclipse in sunny 90% dark South Wales ! 

Most reshares: 17

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2015-01-04 17:02:10 (7 comments, 17 reshares, 20 +1s)Open 

A flipping good Christmas gift!
(or on the stability of asymptomatic solutions to the tippe top…)

One of my more interesting gifts for Christmas was this “impossible balancer” small gift from the Science Museum.   I discovered this has a more universally known name of “Tippe top”.  I took this slow-mo video of it in action (the sound is also worth listening to).  It kept me fascinated by it over the holiday season - you really can’t easily spin it to rotate on its cylindrical stem but instead when you spin it on its spherical body, it flips upside down and then spins on the stem.  I’m no physicist, but have enjoyed reading some of the related explanations; it seems the tippe top has fascinated physicists and mathematicians for generations.  Real physicists please forgive my layperson attempt at an explanation below…

A particular feature is that thecentre of mass does ... more »

Most plusones: 39

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2015-01-16 11:55:34 (9 comments, 1 reshares, 39 +1s)Open 

+Vincent Knight, myself and +Jason Young are today contributing to a school outreach event (we have 140 16/17 yo's in the department).  Done this many times now but with a difference today - we are being filmed!  Working with a media company to create a short film to capture all our impact and engagement activities (industry, teaching and public outreach). 

As you can imagine (and as evident in the pic), Vince is shying away from being on camera and having to be centre of attention!... ;)

Latest 50 posts

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2015-08-20 15:24:56 (9 comments, 0 reshares, 30 +1s)Open 

Congrats to Dr Lizzie Rowse on the successful defence of her thesis "Robust Optimisation of Operating Theatre Schedules".  Great job Lizzie! And thanks to +Vincent Knight for acting as internal examiner :)
And more good news on the very same day as the viva that together with Lizzie's co-supervisors Rhyd Lewis and Jonathan Thompson, we have been successful with the awarded of a £230k grant to progress this research.  Yay!

Congrats to Dr Lizzie Rowse on the successful defence of her thesis "Robust Optimisation of Operating Theatre Schedules".  Great job Lizzie! And thanks to +Vincent Knight for acting as internal examiner :)
And more good news on the very same day as the viva that together with Lizzie's co-supervisors Rhyd Lewis and Jonathan Thompson, we have been successful with the awarded of a £230k grant to progress this research.  Yay!___

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2015-08-16 15:27:12 (7 comments, 1 reshares, 29 +1s)Open 

A genuine Monte-Carlo Markov Chain!
(or a Markov Chain in Monte-Carlo at least...)

My poor attempt at a maths geek vacation pic :) Seriously, Monaco was an awesome place to visit.

A genuine Monte-Carlo Markov Chain!
(or a Markov Chain in Monte-Carlo at least...)

My poor attempt at a maths geek vacation pic :) Seriously, Monaco was an awesome place to visit.___

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2015-07-12 17:11:33 (4 comments, 0 reshares, 17 +1s)Open 

Team Cardiff good to go! Heck, our PhD students are even wearing ties! EURO
Conference (Operational Research) in Glasgow, Scotland. 2,100+ delegates from 73 counties :)


Team Cardiff good to go! Heck, our PhD students are even wearing ties! EURO
Conference (Operational Research) in Glasgow, Scotland. 2,100+ delegates from 73 counties :)
___

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2015-07-09 17:58:39 (3 comments, 1 reshares, 5 +1s)Open 

A nice 5 minute piece about our research and impact broadcast on BBC Radio 4 this evening. Starts around 23.30mins.

+Kevin Clift we finally made it!

A nice 5 minute piece about our research and impact broadcast on BBC Radio 4 this evening. Starts around 23.30mins.

+Kevin Clift we finally made it!___

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2015-07-07 14:23:43 (6 comments, 3 reshares, 12 +1s)Open 

Very good day for media publicity of our research with several short articles in the press including on the BBC news and some of the team are on BBC Radio 4 PM show tonight (primetime at 5pm)! http://www.bbc.co.uk/programmes/b006qskw

Very good day for media publicity of our research with several short articles in the press including on the BBC news and some of the team are on BBC Radio 4 PM show tonight (primetime at 5pm)! http://www.bbc.co.uk/programmes/b006qskw___

2015-06-23 20:57:46 (0 comments, 1 reshares, 7 +1s)Open 

Two Lectureships in Operational Research, Cardiff University, UK

Both posts are full-time and open-ended (permanent).  Closing date: 21st July.  

Aneurin Bevan Lecturer in OR  
http://goo.gl/dlwmtA

In the area of OR healthcare modelling, building on our close collaboration with NHS Wales and several local health boards (currently employing a team of 4 research associates).  This joint lectureship is an exciting initiative and a great opportunity to build an academic career in healthcare OR research and make a real impact by informing NHS Wales policy.

Lecturer in OR
http://goo.gl/QVilyS

Open to any field of OR but with a focus on the mathematical underpinnings of the subject.

Two Lectureships in Operational Research, Cardiff University, UK

Both posts are full-time and open-ended (permanent).  Closing date: 21st July.  

Aneurin Bevan Lecturer in OR  
http://goo.gl/dlwmtA

In the area of OR healthcare modelling, building on our close collaboration with NHS Wales and several local health boards (currently employing a team of 4 research associates).  This joint lectureship is an exciting initiative and a great opportunity to build an academic career in healthcare OR research and make a real impact by informing NHS Wales policy.

Lecturer in OR
http://goo.gl/QVilyS

Open to any field of OR but with a focus on the mathematical underpinnings of the subject.___

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2015-06-22 09:40:18 (2 comments, 0 reshares, 7 +1s)Open 

+Cardiff University and sponsors very kindly provided a £500 departmental cash prize for our Innovation in Healthcare award last week.  I have asked that instead this goes to Ty Hafan who provide palliative care to children and young people across Wales.  Given the healthcare nature of our research and award, seeing the truly wonderful work of Ty Hafan helps remind us all to put everything into perspective. 

+Cardiff University and sponsors very kindly provided a £500 departmental cash prize for our Innovation in Healthcare award last week.  I have asked that instead this goes to Ty Hafan who provide palliative care to children and young people across Wales.  Given the healthcare nature of our research and award, seeing the truly wonderful work of Ty Hafan helps remind us all to put everything into perspective. ___

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2015-06-18 18:08:51 (3 comments, 0 reshares, 23 +1s)Open 

One of the perks (and privileges) of the job - inviting my 11yo son and his classmates to come to the University for a day of STEM activities - engineering (building a motor). mathematics (cryptography, and linear programming using Lego) and
biosciences (the science of snot!).

Huge thanks to those who helped make it a fab day for all - +Zoë Prytherch, +Vincent Knight, +Jason Young, +Geraint Palmer, and Steve Watts.

#schooloutreach
#STEM



One of the perks (and privileges) of the job - inviting my 11yo son and his classmates to come to the University for a day of STEM activities - engineering (building a motor). mathematics (cryptography, and linear programming using Lego) and
biosciences (the science of snot!).

Huge thanks to those who helped make it a fab day for all - +Zoë Prytherch, +Vincent Knight, +Jason Young, +Geraint Palmer, and Steve Watts.

#schooloutreach
#STEM

___

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2015-06-17 22:19:38 (4 comments, 1 reshares, 24 +1s)Open 

Win! For the team :)

http://www.cardiff.ac.uk/news/view/105269-maths-saves-lives!-healthcare-modellers-win-innovation-award



Win! For the team :)

http://www.cardiff.ac.uk/news/view/105269-maths-saves-lives!-healthcare-modellers-win-innovation-award

___

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2015-06-15 20:33:59 (0 comments, 0 reshares, 6 +1s)Open 

What a neat event from our friends at Twente University, Netherlands. A summer school with a festival: academic courses, music, sports, theatre, inspirational speakers all on campus over one week (tents are included!) 

CuriousU is focused on Bachelor’s students in their second to last or last year, and entry level Master’s students.

What a neat event from our friends at Twente University, Netherlands. A summer school with a festival: academic courses, music, sports, theatre, inspirational speakers all on campus over one week (tents are included!) 

CuriousU is focused on Bachelor’s students in their second to last or last year, and entry level Master’s students.___

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2015-06-01 14:46:25 (5 comments, 2 reshares, 14 +1s)Open 

Proud winners of the +Cardiff University Innovation and Impact Award 2015 in Healthcare for our research in collaboration with NHS Wales on using mathematics to save lives!  Please vote for us to become the overall "People's Choice" award winner (from amongst the 5 category winners) if you think us worthy!  (to vote you can simply like the YouTube video or other ways to vote and see all other videos at: http://goo.gl/cv3KxB: ).  

Awesome that the team here have been recognised in this way; very proud of them all and the way we are making an impact in helping to deliver better health services.  

+Vincent Knight +Julie Vile +Jason Young +Geraint Palmer  

Proud winners of the +Cardiff University Innovation and Impact Award 2015 in Healthcare for our research in collaboration with NHS Wales on using mathematics to save lives!  Please vote for us to become the overall "People's Choice" award winner (from amongst the 5 category winners) if you think us worthy!  (to vote you can simply like the YouTube video or other ways to vote and see all other videos at: http://goo.gl/cv3KxB: ).  

Awesome that the team here have been recognised in this way; very proud of them all and the way we are making an impact in helping to deliver better health services.  

+Vincent Knight +Julie Vile +Jason Young +Geraint Palmer  ___

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2015-05-22 11:18:28 (0 comments, 0 reshares, 6 +1s)Open 

Spending the morning filming at HP Labs, Bristol, on how research by colleagues here in +Cardiff University School of Mathematics has led to algorithms for data security now used globally in HP products. This will form part of our forthcoming school engagement video :)

Spending the morning filming at HP Labs, Bristol, on how research by colleagues here in +Cardiff University School of Mathematics has led to algorithms for data security now used globally in HP products. This will form part of our forthcoming school engagement video :)___

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2015-05-18 13:05:08 (3 comments, 0 reshares, 23 +1s)Open 

Introducing my new office... for 2 days! Wonderful to be back at Gregynog for the Welsh Mathematics Colloquium. Arrived early to benefit from the absolute peace in this beautiful library and get some work done. No one else in sight still. Just the ticking of the clock and the tweeting of the birds outside :) Bliss.

Introducing my new office... for 2 days! Wonderful to be back at Gregynog for the Welsh Mathematics Colloquium. Arrived early to benefit from the absolute peace in this beautiful library and get some work done. No one else in sight still. Just the ticking of the clock and the tweeting of the birds outside :) Bliss.___

2015-05-12 14:35:01 (0 comments, 1 reshares, 5 +1s)Open 

We'll be broadcasting talks from this seminar live on Thursday 14th May. We are delighted that Mr Daniel Thayer, a senior research analyst at the SAIL (Secure Anonymised Information Linkage) Databank, will be speaking at this event about the potential of the wide array of data held by SAIL to revolutionise medical research and increase the pace of healthcare innovation. This talk will be followed by a series of short ‘lightning talks’ by members of the Operational Research Group at Cardiff University, overviewing key mathematical techniques. Each presentation will include both a brief explanation of what each technique is and a short case study exemplifying how it has been used to improve the design and delivery of NHS care in practice. 

A full agenda for the event is available at https://goo.gl/Cdqgfy

If you're interested in attending the breakout sessions in person, buthave... more »

We'll be broadcasting talks from this seminar live on Thursday 14th May. We are delighted that Mr Daniel Thayer, a senior research analyst at the SAIL (Secure Anonymised Information Linkage) Databank, will be speaking at this event about the potential of the wide array of data held by SAIL to revolutionise medical research and increase the pace of healthcare innovation. This talk will be followed by a series of short ‘lightning talks’ by members of the Operational Research Group at Cardiff University, overviewing key mathematical techniques. Each presentation will include both a brief explanation of what each technique is and a short case study exemplifying how it has been used to improve the design and delivery of NHS care in practice. 

A full agenda for the event is available at https://goo.gl/Cdqgfy

If you're interested in attending the breakout sessions in person, but haven't registered yet, please drop me a line to let me know!___

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2015-05-05 13:15:55 (0 comments, 0 reshares, 4 +1s)Open 

If you teach maths at university (or even FE) and you're at all interested in online assessment, please consider attending this free workshop I'm running in Loughborough.
It's two days (of which you can attend one, the other, or both) all about Numbas, the open-source e-assessment system I'm in charge of at Newcastle University.

If you teach maths at university (or even FE) and you're at all interested in online assessment, please consider attending this free workshop I'm running in Loughborough.
It's two days (of which you can attend one, the other, or both) all about Numbas, the open-source e-assessment system I'm in charge of at Newcastle University.___

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2015-04-23 10:05:46 (0 comments, 0 reshares, 10 +1s)Open 

Not one but two crews in the lab filming our healthcare modelling team today! Exciting videos and news on the way... :)

Not one but two crews in the lab filming our healthcare modelling team today! Exciting videos and news on the way... :)___

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2015-04-21 08:14:52 (2 comments, 1 reshares, 13 +1s)Open 

Great to see such a high turnout and interest for the first of several sessions to detail +Cardiff University's portfolio of initiatives to enhance the student experience (eg £38m investment coming to upgrade physical teaching spaces - hurrah!). So much of the effort recently seems to have gone into the research exercise (REF) so awesome that teaching and learning is rightfully getting attention and investment. 

Great to see such a high turnout and interest for the first of several sessions to detail +Cardiff University's portfolio of initiatives to enhance the student experience (eg £38m investment coming to upgrade physical teaching spaces - hurrah!). So much of the effort recently seems to have gone into the research exercise (REF) so awesome that teaching and learning is rightfully getting attention and investment. ___

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2015-04-17 10:59:15 (0 comments, 0 reshares, 8 +1s)Open 

Just nearing the end of the 3-day workshop on Data Mining with Applications to Healthcare.  Been a blast with a great tutor, Dr Kemal Kılıç (Sabancı University, Istanbul) and attended by 27 delegates (mostly PhD students / post-docs) from remarkably 12 different nations :)  My gratitude to Kemal for giving his time so freely.

Just nearing the end of the 3-day workshop on Data Mining with Applications to Healthcare.  Been a blast with a great tutor, Dr Kemal Kılıç (Sabancı University, Istanbul) and attended by 27 delegates (mostly PhD students / post-docs) from remarkably 12 different nations :)  My gratitude to Kemal for giving his time so freely.___

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2015-04-13 08:26:55 (7 comments, 0 reshares, 24 +1s)Open 

Possibly my proudest citation... I had to check the notification wasn't dated April 1st. Apparently my past research on maternity risk is related to balsamic vinegar of Modena analyzed by nuclear magnetic resonance spectroscopy :)


Possibly my proudest citation... I had to check the notification wasn't dated April 1st. Apparently my past research on maternity risk is related to balsamic vinegar of Modena analyzed by nuclear magnetic resonance spectroscopy :)
___

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2015-03-20 10:27:01 (13 comments, 0 reshares, 23 +1s)Open 

Perfect conditions for the solar eclipse in sunny 90% dark South Wales ! 

Perfect conditions for the solar eclipse in sunny 90% dark South Wales ! ___

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2015-03-19 12:47:45 (2 comments, 2 reshares, 21 +1s)Open 

Earlier this week I had the pleasure to be on the judging panel and present a prize on behalf of the Wales Institute for Mathematical and Computational Sciences at a really awesome "Big Bang" science festival with around 100 Welsh Schools taking part. Teams of students (from as young as 8 year olds right up to 18) have been working on STEM projects with an industrial partner, and they showcased their excellent work. Our prize was for the "Best Application of Maths" and went to Cynffig Comprehensive School who have been working with Sony on a quicker solution (which has actually been implemented) to packaging Raspberry Pi's on their production line; this involved the use of lots of interesting maths in designing the system and was very impressive indeed!

http://www.thebigbangfair.co.uk/wales/South_Wales/

Earlier this week I had the pleasure to be on the judging panel and present a prize on behalf of the Wales Institute for Mathematical and Computational Sciences at a really awesome "Big Bang" science festival with around 100 Welsh Schools taking part. Teams of students (from as young as 8 year olds right up to 18) have been working on STEM projects with an industrial partner, and they showcased their excellent work. Our prize was for the "Best Application of Maths" and went to Cynffig Comprehensive School who have been working with Sony on a quicker solution (which has actually been implemented) to packaging Raspberry Pi's on their production line; this involved the use of lots of interesting maths in designing the system and was very impressive indeed!

http://www.thebigbangfair.co.uk/wales/South_Wales/___

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2015-03-12 11:33:15 (6 comments, 1 reshares, 15 +1s)Open 

The Minister for Education just sat in my school outreach session at a Maths event being held in Swansea University. You can see him in the photo watching on, along with the Vice Chancellor of the University, as the students were having fun playing my epidemic role-play activity. Thankfully the session seemed to go really well with lots of engagement from the students. They were great! The Minister left smiling at least and it was a great honour to be invited and have him come and participate.

The Minister for Education just sat in my school outreach session at a Maths event being held in Swansea University. You can see him in the photo watching on, along with the Vice Chancellor of the University, as the students were having fun playing my epidemic role-play activity. Thankfully the session seemed to go really well with lots of engagement from the students. They were great! The Minister left smiling at least and it was a great honour to be invited and have him come and participate.___

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2015-03-10 18:01:35 (0 comments, 0 reshares, 15 +1s)Open 

Delighted to be able to make the launch event of the Greenwich Maths Centre (www.gre.ac.uk/mathscentre). Congratulations to Tony Mann (Director), +Noel-Ann Bradshaw and colleagues, and good luck to them in their new venture. Honoured to be invited to sit on their advisory panel. Just settling down to listen to a seminar by Dame Celia Hoyles, President of the IMA (www.ima.org.uk)

Delighted to be able to make the launch event of the Greenwich Maths Centre (www.gre.ac.uk/mathscentre). Congratulations to Tony Mann (Director), +Noel-Ann Bradshaw and colleagues, and good luck to them in their new venture. Honoured to be invited to sit on their advisory panel. Just settling down to listen to a seminar by Dame Celia Hoyles, President of the IMA (www.ima.org.uk)___

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2015-03-10 14:45:58 (4 comments, 0 reshares, 18 +1s)Open 

Visiting The University of Greenwich for the launch of an exciting new mathematics centre (more about that later) but took the opportunity to come and stand on the Greenwich Meridian line :)

The Royal Observatory is famous for supplying Greenwich mean time since an agreed international convention in 1884.

Visiting The University of Greenwich for the launch of an exciting new mathematics centre (more about that later) but took the opportunity to come and stand on the Greenwich Meridian line :)

The Royal Observatory is famous for supplying Greenwich mean time since an agreed international convention in 1884.___

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2015-02-20 19:02:07 (1 comments, 1 reshares, 8 +1s)Open 

Axelrod's tournament on github

Please share and contribute to this repository: https://github.com/drvinceknight/Axelrod

In the 1908s Axelrod ran a computer tournament that has often been used as a discussion point for how cooperation can evolve in complex systems.

I've modified a workshop I gave in Namibia to allow for simple contributions of strategies to a Prisoner's Dilemma tournament.

I've written a blog post about contributing here: http://goo.gl/zkgSkc and +Jason Young helped me put together a video showing how to submit a strategy with nothing more than the github web interface: http://youtu.be/5kOUVdktxAo

If anyone would like to contribute but does not know Python or does not feel confident in their knowledge of git/github please do get in touch. 

All strategies would be welcome: not just winning ones :D

Axelrod's tournament on github

Please share and contribute to this repository: https://github.com/drvinceknight/Axelrod

In the 1908s Axelrod ran a computer tournament that has often been used as a discussion point for how cooperation can evolve in complex systems.

I've modified a workshop I gave in Namibia to allow for simple contributions of strategies to a Prisoner's Dilemma tournament.

I've written a blog post about contributing here: http://goo.gl/zkgSkc and +Jason Young helped me put together a video showing how to submit a strategy with nothing more than the github web interface: http://youtu.be/5kOUVdktxAo

If anyone would like to contribute but does not know Python or does not feel confident in their knowledge of git/github please do get in touch. 

All strategies would be welcome: not just winning ones :D___

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2015-02-17 08:30:41 (2 comments, 0 reshares, 13 +1s)Open 

Approaching the toll booths, I had a quick decision to make...  join the long line and pay the advertised toll cost, or head for the shorter queue served by the guy with the long nose and thus most probably pay a higher, unknown, cost....

Markov decision processes in every day life...  Who says mathematics isn't applicable?! 

Approaching the toll booths, I had a quick decision to make...  join the long line and pay the advertised toll cost, or head for the shorter queue served by the guy with the long nose and thus most probably pay a higher, unknown, cost....

Markov decision processes in every day life...  Who says mathematics isn't applicable?! ___

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2015-02-05 19:50:58 (0 comments, 0 reshares, 12 +1s)Open 

Just finished our 6th event in this seminar series: "Developing mathematical models in healthcare". 60 or so researchers and healthcare staff came to listen to great talks by Dr Christos Vasilakis (Bath University) and Soheil Davari (from our own group).

Just finished our 6th event in this seminar series: "Developing mathematical models in healthcare". 60 or so researchers and healthcare staff came to listen to great talks by Dr Christos Vasilakis (Bath University) and Soheil Davari (from our own group).___

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2015-02-02 13:38:09 (0 comments, 0 reshares, 9 +1s)Open 

In London for a few meetings over the next 2 days and our visitor, +Edilson Fernandes De Arruda, took the opportunity to come with me. Nice to pop by the Royal Society who is kindly funding his research trip :)

In London for a few meetings over the next 2 days and our visitor, +Edilson Fernandes De Arruda, took the opportunity to come with me. Nice to pop by the Royal Society who is kindly funding his research trip :)___

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2015-01-30 19:34:30 (0 comments, 3 reshares, 10 +1s)Open 

We're recruiting! +Cardiff University School of Mathematics wishes to appoint a full-time, open-ended Senior Lecturer (Associate Prof equivalent) in Financial Mathematics.

We're recruiting! +Cardiff University School of Mathematics wishes to appoint a full-time, open-ended Senior Lecturer (Associate Prof equivalent) in Financial Mathematics.___

2015-01-29 17:02:57 (0 comments, 0 reshares, 11 +1s)Open 

After a pretty intensive week or so, nice to see it culminate in the successful submission of a large £2m+ EPSRC maths + health proposal (with 3 other partners led by Brunel) just in time! And today another bid and deadline met with a couple of Portuguese universities who kindly invited us to join in a research proposal :)

Right, now back to everything I've ignored for the past few days...

After a pretty intensive week or so, nice to see it culminate in the successful submission of a large £2m+ EPSRC maths + health proposal (with 3 other partners led by Brunel) just in time! And today another bid and deadline met with a couple of Portuguese universities who kindly invited us to join in a research proposal :)

Right, now back to everything I've ignored for the past few days...___

2015-01-29 16:07:58 (0 comments, 0 reshares, 8 +1s)Open 

We'll be broadcasting talks from this seminar live on Thursday 5th Feb.

In this event, Dr Christos Vasilakis (Director of the newly established Bath Centre for Healthcare Innovation and Improvement (CHI2), www.bath.ac.uk/chi2) and Dr Soheil Davari (Research Associate at the Cardiff School of Mathematics and Mathematical Modeller in Aneurin Bevan Health Board), will be drawing on case studies to discuss the role of Operational Research in redesigning healthcare services.
 
​A full agenda for the event is available at http://goo.gl/vFq3P5

If you're interested in attending the breakout sessions in person, but haven't registered yet, please drop me a line to let me know!

We'll be broadcasting talks from this seminar live on Thursday 5th Feb.

In this event, Dr Christos Vasilakis (Director of the newly established Bath Centre for Healthcare Innovation and Improvement (CHI2), www.bath.ac.uk/chi2) and Dr Soheil Davari (Research Associate at the Cardiff School of Mathematics and Mathematical Modeller in Aneurin Bevan Health Board), will be drawing on case studies to discuss the role of Operational Research in redesigning healthcare services.
 
​A full agenda for the event is available at http://goo.gl/vFq3P5

If you're interested in attending the breakout sessions in person, but haven't registered yet, please drop me a line to let me know!___

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2015-01-21 11:08:22 (2 comments, 0 reshares, 18 +1s)Open 

The young and gifted mathematical minds of +Edilson Fernandes De Arruda and +Vincent Knight in action :)  Exploring some nice game theoretical and MDP (Markov Decision Processes) connections/research ideas. 

The young and gifted mathematical minds of +Edilson Fernandes De Arruda and +Vincent Knight in action :)  Exploring some nice game theoretical and MDP (Markov Decision Processes) connections/research ideas. ___

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2015-01-16 11:55:34 (9 comments, 1 reshares, 39 +1s)Open 

+Vincent Knight, myself and +Jason Young are today contributing to a school outreach event (we have 140 16/17 yo's in the department).  Done this many times now but with a difference today - we are being filmed!  Working with a media company to create a short film to capture all our impact and engagement activities (industry, teaching and public outreach). 

As you can imagine (and as evident in the pic), Vince is shying away from being on camera and having to be centre of attention!... ;)

+Vincent Knight, myself and +Jason Young are today contributing to a school outreach event (we have 140 16/17 yo's in the department).  Done this many times now but with a difference today - we are being filmed!  Working with a media company to create a short film to capture all our impact and engagement activities (industry, teaching and public outreach). 

As you can imagine (and as evident in the pic), Vince is shying away from being on camera and having to be centre of attention!... ;)___

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2015-01-12 13:53:12 (5 comments, 0 reshares, 14 +1s)Open 

Nice to have just received a formal letter of award for a successful Royal Society Newton Fund grant application with +Edilson Fernandes De Arruda from the Federal University of Rio de Janeiro.  The funding permits Edilson to spend 7 weeks at +Cardiff University working primarily with myself and +Vincent Knight on the title of the research proposal "Markov Decision Processes: Theory and Applications in Healthcare Modelling". We very much look forward to welcoming Edilson to Wales and initiating what we trust will be an enjoyable and fruitful  research collaboration with him and his team in  Rio.

Nice to have just received a formal letter of award for a successful Royal Society Newton Fund grant application with +Edilson Fernandes De Arruda from the Federal University of Rio de Janeiro.  The funding permits Edilson to spend 7 weeks at +Cardiff University working primarily with myself and +Vincent Knight on the title of the research proposal "Markov Decision Processes: Theory and Applications in Healthcare Modelling". We very much look forward to welcoming Edilson to Wales and initiating what we trust will be an enjoyable and fruitful  research collaboration with him and his team in  Rio.___

2015-01-09 14:21:55 (3 comments, 0 reshares, 7 +1s)Open 

Nice read about what it's like to be an editor of a journal. I guess what I've learnt as an editor now in my third year is that it takes more time than I imagined it would (at least to do a decent job of it, which I hope I am), that you need to be somewhat thick-skinned (and would point out I am doing this for the love of my subject and for the OR Society who gains from their journal portfolio; and certainly not personal reward or ego-boosting as I've often hear people claim about editors - mostly immediately after a verdict they aren't happy with!), and as Prof Shallit describes, a major positive of being an editor (and one I'd advocate to anyone ever thinking of becoming an editor), that you get to read a load of interesting papers before they appear, often inspiring my own work. Furthermore I do believe the publishing system could do with an overhaul, so at least being on this... more »

An article about being the editor of a mathematics open access journal (the so-called 'diamond' flavour: free for authors and readers):

http://www.ams.org/notices/201502/rnoti-p169.pdf

This is a very solid journal with over a decade and a half of publishing, so a reasonable amount of experience, before and after the more recent interest in OA.

#publishing   #openaccess  ___Nice read about what it's like to be an editor of a journal. I guess what I've learnt as an editor now in my third year is that it takes more time than I imagined it would (at least to do a decent job of it, which I hope I am), that you need to be somewhat thick-skinned (and would point out I am doing this for the love of my subject and for the OR Society who gains from their journal portfolio; and certainly not personal reward or ego-boosting as I've often hear people claim about editors - mostly immediately after a verdict they aren't happy with!), and as Prof Shallit describes, a major positive of being an editor (and one I'd advocate to anyone ever thinking of becoming an editor), that you get to read a load of interesting papers before they appear, often inspiring my own work. Furthermore I do believe the publishing system could do with an overhaul, so at least being on this 'side' one can start to try and encourage change too.

I'm extremely grateful to the many others contributing to the journal (Health Systems) working alongside other editors and a fantastic team of area editors which makes the job that much more manageable and enjoyable.

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2015-01-04 17:32:33 (2 comments, 4 reshares, 39 +1s)Open 

A flipping good Christmas gift!
(or on the stability of asymptomatic solutions to the tippe top…)

One of my more interesting gifts for Christmas was this “impossible balancer” small gift from the Science Museum.   I discovered this has a more universally known name of “Tippe top”.  I took this slow-mo video of it in action (the sound is also worth listening to).  It kept me fascinated by it over the holiday season - you really can’t easily spin it to rotate on its cylindrical stem but instead when you spin it on its spherical body, it flips upside down and then spins on the stem.  I’m no physicist, but have enjoyed reading some of the related explanations; it seems the tippe top has fascinated physicists and mathematicians for generations.  Real physicists please forgive my layperson attempt at an explanation below…

A particular feature is that thecentre of mass does ... more »

A flipping good Christmas gift!
(or on the stability of asymptomatic solutions to the tippe top…)

One of my more interesting gifts for Christmas was this “impossible balancer” small gift from the Science Museum.   I discovered this has a more universally known name of “Tippe top”.  I took this slow-mo video of it in action (the sound is also worth listening to).  It kept me fascinated by it over the holiday season - you really can’t easily spin it to rotate on its cylindrical stem but instead when you spin it on its spherical body, it flips upside down and then spins on the stem.  I’m no physicist, but have enjoyed reading some of the related explanations; it seems the tippe top has fascinated physicists and mathematicians for generations.  Real physicists please forgive my layperson attempt at an explanation below…

A particular feature is that the centre of mass does not sit at the geometrical centre of the top and thus when initially spun it slides in small circles over the spinning surface. The friction between the tippe top and the surface creates a twisting force torque that pulls the stem down.  When the stem is horizontal, the stem no longer rotates and the rotation is now perpendicular to the stem.  As the stem contacts the surface the friction creates more torque which provides the force that lifts the spherical body.  The stem, which has stopped rotating, starts rotating again on hitting the surface but now in the opposite direction.  The direction of spin has thus changed.

From such a small and innocent looking object, many scientific papers have seemingly been written on tippe top inversion based on the stability of asymptomatic solutions; see for example a SIAM Review paper of 2008 “Dissipation-Induced Heteroclinic Orbits in Tippe Tops” (http://authors.library.caltech.edu/10958/1/BOUsiamr08.pdf) and a description of the top: http://fabilsen.home.xs4all.nl/tippe-top.pdf

So probably the smallest gift I received gave me the most interest this Christmas; and along with the book “What if?” by Randall Munroe, which I also highly recommend as a great science read.

Happy new year all.

#sciencesunday___

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2015-01-04 17:02:10 (7 comments, 17 reshares, 20 +1s)Open 

A flipping good Christmas gift!
(or on the stability of asymptomatic solutions to the tippe top…)

One of my more interesting gifts for Christmas was this “impossible balancer” small gift from the Science Museum.   I discovered this has a more universally known name of “Tippe top”.  I took this slow-mo video of it in action (the sound is also worth listening to).  It kept me fascinated by it over the holiday season - you really can’t easily spin it to rotate on its cylindrical stem but instead when you spin it on its spherical body, it flips upside down and then spins on the stem.  I’m no physicist, but have enjoyed reading some of the related explanations; it seems the tippe top has fascinated physicists and mathematicians for generations.  Real physicists please forgive my layperson attempt at an explanation below…

A particular feature is that thecentre of mass does ... more »

A flipping good Christmas gift!
(or on the stability of asymptomatic solutions to the tippe top…)

One of my more interesting gifts for Christmas was this “impossible balancer” small gift from the Science Museum.   I discovered this has a more universally known name of “Tippe top”.  I took this slow-mo video of it in action (the sound is also worth listening to).  It kept me fascinated by it over the holiday season - you really can’t easily spin it to rotate on its cylindrical stem but instead when you spin it on its spherical body, it flips upside down and then spins on the stem.  I’m no physicist, but have enjoyed reading some of the related explanations; it seems the tippe top has fascinated physicists and mathematicians for generations.  Real physicists please forgive my layperson attempt at an explanation below…

A particular feature is that the centre of mass does not sit at the geometrical centre of the top and thus when initially spun it slides in small circles over the spinning surface. The friction between the tippe top and the surface creates a twisting force torque that pulls the stem down.  When the stem is horizontal, the stem no longer rotates and the rotation is now perpendicular to the stem.  As the stem contacts the surface the friction creates more torque which provides the force that lifts the spherical body.  The stem, which has stopped rotating, starts rotating again on hitting the surface but now in the opposite direction.  The direction of spin has thus changed.

From such a small and innocent looking object, many scientific papers have seemingly been written on tippe top inversion based on the stability of asymptomatic solutions; see for example a SIAM Review paper of 2008 “Dissipation-Induced Heteroclinic Orbits in Tippe Tops” (http://authors.library.caltech.edu/10958/1/BOUsiamr08.pdf) and a description of the top: http://fabilsen.home.xs4all.nl/tippe-top.pdf

So probably the smallest gift I received gave me the most interest this Christmas; and along with the book “What if?” by Randall Munroe, which I also highly recommend as a great science read.

Happy new year all.

#sciencesunday___

2015-01-02 11:15:56 (0 comments, 0 reshares, 3 +1s)Open 

I am teaching an advanced course on statistical machine learning this term as part of the Thematic Program on Statistical Inference, Learning, and Models for Big Data at the Fields Institute.
 
http://www.cs.toronto.edu/~rsalakhu/STA4273_2015/  
I believe that there will be live streaming as well as lecture recording, in case you are interested:
 
http://www.fields.utoronto.ca/live  
I do not know how well the overall system will work (I have never done this before), but I will also make my slides available online.
 
For a very similar previous course (together with lecture notes), see

http://www.cs.toronto.edu/~rsalakhu/sta4273_2013/lectures.html

I am teaching an advanced course on statistical machine learning this term as part of the Thematic Program on Statistical Inference, Learning, and Models for Big Data at the Fields Institute.
 
http://www.cs.toronto.edu/~rsalakhu/STA4273_2015/  
I believe that there will be live streaming as well as lecture recording, in case you are interested:
 
http://www.fields.utoronto.ca/live  
I do not know how well the overall system will work (I have never done this before), but I will also make my slides available online.
 
For a very similar previous course (together with lecture notes), see

http://www.cs.toronto.edu/~rsalakhu/sta4273_2013/lectures.html___

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2014-12-18 06:03:51 (0 comments, 0 reshares, 17 +1s)Open 

Proud to be at +Cardiff University
Top 5 in research excellence in UK

Proud to be at +Cardiff University
Top 5 in research excellence in UK___

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2014-12-15 14:10:41 (2 comments, 0 reshares, 9 +1s)Open 

Attending the launch of +Cardiff University's five 'flagship engagement projects' working with communities on issues such as tackling poverty, boosting the economy, and improving health, education and wellbeing.

The School of Mathematics is contributing in particular to The Phoenix project (working with the University of Namibia, thanks to Rob Wilson and +Vincent Knight), and the Healthier Communities and City Region projects (thanks to the healthcare modelling and transportation research themes in the Operational Research group).

http://www.cardiff.ac.uk/about/our-profile/engagement/flagship-projects 

Attending the launch of +Cardiff University's five 'flagship engagement projects' working with communities on issues such as tackling poverty, boosting the economy, and improving health, education and wellbeing.

The School of Mathematics is contributing in particular to The Phoenix project (working with the University of Namibia, thanks to Rob Wilson and +Vincent Knight), and the Healthier Communities and City Region projects (thanks to the healthcare modelling and transportation research themes in the Operational Research group).

http://www.cardiff.ac.uk/about/our-profile/engagement/flagship-projects ___

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2014-12-09 08:27:24 (11 comments, 0 reshares, 18 +1s)Open 

108 mince pies and chocolates for prizes in my last class before the Christmas vacation... I'm too good to my students! #bribentives #MA0261

108 mince pies and chocolates for prizes in my last class before the Christmas vacation... I'm too good to my students! #bribentives #MA0261___

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2014-12-09 07:13:43 (0 comments, 1 reshares, 7 +1s)Open 

Really useful resource created by +Tim Hopper. Nice to be invited by Tim to contribute to this.

Take a look at +Tim Hopper​'s nice collection of interviews about doing a PhD. A very nice resource that all of those thinking about doing a PhD might find useful. ___Really useful resource created by +Tim Hopper. Nice to be invited by Tim to contribute to this.

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2014-12-08 11:51:30 (0 comments, 0 reshares, 9 +1s)Open 

The +Cardiff Maths MSc OR/Stats case study is well underway.  Our students need to work in teams on a challenging forecasting and scheduling problem just in a day; they present back to the company representatives who set the real-life problem later.  Good luck to them all!

The +Cardiff Maths MSc OR/Stats case study is well underway.  Our students need to work in teams on a challenging forecasting and scheduling problem just in a day; they present back to the company representatives who set the real-life problem later.  Good luck to them all!___

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2014-12-03 09:15:49 (7 comments, 0 reshares, 13 +1s)Open 

Always a pleasure to be back. Good memories of 10 very happy years here. On this occasion to examine one of +Joerg Fliege's PhD students.

Always a pleasure to be back. Good memories of 10 very happy years here. On this occasion to examine one of +Joerg Fliege's PhD students.___

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2014-12-02 13:07:21 (0 comments, 0 reshares, 14 +1s)Open 

My #MA0261  Queueing Theory students submitted their photo entries and the class voted on the winner.  Dogs in a 'batch queue' for a feeding frenzy just pipped a queue of camels to claim first prize!  

My #MA0261  Queueing Theory students submitted their photo entries and the class voted on the winner.  Dogs in a 'batch queue' for a feeding frenzy just pipped a queue of camels to claim first prize!  ___

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2014-11-21 07:51:48 (8 comments, 0 reshares, 25 +1s)Open 

Thoroughly well deserved +Vincent Knight!

So proud of my husband (+Vincent Knight) for winning the "Rising Star" award at the Cardiff University's Celebrating Excellence Awards last night :)___Thoroughly well deserved +Vincent Knight!

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2014-11-04 09:37:25 (0 comments, 0 reshares, 4 +1s)Open 

Inspiring 3 minute films on a range of subjects.  Such a great project and resource.  

#haylevels

Inspiring 3 minute films on a range of subjects.  Such a great project and resource.  

#haylevels___

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2014-11-03 15:23:10 (4 comments, 0 reshares, 11 +1s)Open 

Single queue with 2 servers, single queue with 1 twice as fast server, or two parallel queues each with half the demand and 1 server?...

This is what we are considering in my UG class.  We are about to derive the performance measures and compare/discuss which system would be preferable (despite them each having the same traffic intensity so intuitively one might believe it makes no difference at all...) 

But before moving on to the analytical work, I got the class to role play the systems.  I sampled inter-arrival times and service times, and they moved through the queueing system (30 students for each) and recorded the waiting times and numbers queueing.  This was neat (well at least I thought it was - my 'cool' second years pretended not to overly enjoy it) since it also introduced random number generation & sampling from distributions (we are moving onto thisnex... more »

Single queue with 2 servers, single queue with 1 twice as fast server, or two parallel queues each with half the demand and 1 server?...

This is what we are considering in my UG class.  We are about to derive the performance measures and compare/discuss which system would be preferable (despite them each having the same traffic intensity so intuitively one might believe it makes no difference at all...) 

But before moving on to the analytical work, I got the class to role play the systems.  I sampled inter-arrival times and service times, and they moved through the queueing system (30 students for each) and recorded the waiting times and numbers queueing.  This was neat (well at least I thought it was - my 'cool' second years pretended not to overly enjoy it) since it also introduced random number generation & sampling from distributions (we are moving onto this next) and simulation of queueing systems.  

Looking at the data from our 'experiment' (and the observations made by the class) it seems to compare very well to the analytical results and overall insights that the queue length and queueing time was on average less in case 1 (2 servers) than case 2 (single faster server), but the opposite way round when considering total time in the system (including service time).

#ma0261  
#queueingtheory  ___

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2014-10-30 10:43:54 (2 comments, 1 reshares, 6 +1s)Open 

Conference app - recommendations welcome :)

I'm on the organising committee of EURO 2015 in Glasgow, Scotland. We are looking to select a conference app and I was wondering if anyone has any particular good recommendations/experiences? (e.g. guidebook.com) This is for an organised agenda, venue maps etc. Certainly a tool that suggests a personalised schedule based on ranking to a keywords search for example would be awesome. The conference will be large - typically around 2-3,000 delegates.

Conference app - recommendations welcome :)

I'm on the organising committee of EURO 2015 in Glasgow, Scotland. We are looking to select a conference app and I was wondering if anyone has any particular good recommendations/experiences? (e.g. guidebook.com) This is for an organised agenda, venue maps etc. Certainly a tool that suggests a personalised schedule based on ranking to a keywords search for example would be awesome. The conference will be large - typically around 2-3,000 delegates.___

2014-10-26 21:40:30 (0 comments, 0 reshares, 2 +1s)Open 

#chimera #oreilly

Free books and videos from O'Reilly.

#chimera #oreilly

Free books and videos from O'Reilly.___

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