Difference between pages "User talk:Augur ." and "Astronomy Miniconf"

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m (What is needed: that's the problem with Ameringlish dictionaries: if you're expecting it to fail on a missing "z", you risk missing a real spelling mistake!)
 
(Draft schedule - no links yet.)
 
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= So much stuff isn't working here yet =
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{{Trail|Programme|Miniconfs}}
I'm starting to think that much of the normal stuff I regularly do in other wikis is reliant on [[Special:Version|installed extensions]]. So much of what I've been trying here already, such as adding my [[User_talk:Augur_./box#Something_is_not_set_up_right_here|box template]], or altering the <nowiki>{{DISPLAYTITLE}}</nowiki> for my home page, doesn't seem to be working. I've already put in a request (via [[User:Lin Nah|Lin Nah]]) for a list of common MediaWiki extensions to be installed here, to support some of the features I use regularly. Will have to wait and see if/when some of them get installed, whether the tricks I've been trying to use will suddenly start working. [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 18:06, 8 December 2014 (AEDT)
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:It is not just the extensions, but some of the back-end configuration is also not set up the way I'd normally expect a wiki to be set up. For instance, the [https://www.mediawiki.org/wiki/Manual:$wgNamespacesWithSubpages $wgNamespacesWithSubpages] option has not been enabled for the Template: namespace, meaning that the normal way of documenting templates using the <nowiki>{{/doc}}</nowiki> command is unavailable. [https://www.mediawiki.org/wiki/Manual:Interwiki InterWiki] doesn't seem to have been enabled either. Also, my [[Special:Preferences|Preferences]] don't seem to have saved between sessions, so I've lost my custom signature between logins, along with my regional settings, etc. I'd really appreciate having access to the back-end of the wiki, to set some of this stuff up properly, if that's okay?  [[User:Augur .|Augur .]] ([[User talk:Augur .|talk]]) 19:19, 8 December 2014 (AEDT)
+
  
:: just sent you an email. Suggest you check out previous LCA wikis to see how it is being used by the conference attendees. [[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 19:45, 8 December 2014 (AEDT)
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About  Schedule  Presentations and Presenters [[/Astronomy2015CFP | Call for Presentations]]
:::Thanks Lin, got that. Looks like the file uploads are working now. I'd still like to get some of those MW extensions installed from the list I gave you earlier. [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 13:33, 9 December 2014 (AEDT)
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::::I'm stalled again. Much of what I want to accomplish at the moment relies heavily on [https://www.mediawiki.org/wiki/Extension:ParserFunctions ParserFunctions], such as the ever-handy '''<nowiki>{{#if:}}</nowiki>''' conditional statement. Any chance that could be the first MW extension from my wishlist to be installed, please? [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 14:43, 9 December 2014 (AEDT)
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::::: I didn't ask for the parser function to be installed because I wanted to see what else you want installed (see below) and check them out. Also didn't think my upload problem would be resolved so quickly.[[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 16:32, 9 December 2014 (AEDT)
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== Media Wiki extensions ==
 
Can you list the extensions you want installed or is the [https://www.mediawiki.org/wiki/Extension:ParserFunctions ParserFunctions] the only extension?
 
It just saves time if we have a list. Before they are installed, someone needs to ensure the stuff on the list will not result in unintended consequences if used is allowed. [[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 16:32, 9 December 2014 (AEDT)
 
:I thought you might ask. I've just created such a list [[User:Augur_./MW Extension Shoppinglist|here]]. [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 16:39, 9 December 2014 (AEDT)
 
  
== Things to look for ==
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= Schedule =
One thing to watch out for is people creating a duplicate page due to wrong spelling/case. eg front page has Partners Programme and Partners programme both listed.
+
  
 +
{| class="wikitable"
 +
!Time
 +
!Presentation
 +
|-
 +
| 10:40 - 10:45
 +
| Welcome by Jessica Smith
 +
|-
 +
| 10:45 - 11:25
 +
| Māori astronomy by Dr. Pauline Harris
 +
|-
 +
| 11:35 - 12:20
 +
| Visualising the Open Universe by Dr. Nicholas James Rattenbury
 +
|-
 +
|
 +
| Lunch
 +
|-
 +
| 13:20 - 14:05
 +
| Open modelling of stars and galaxies from our own to those at the edge of the observable Universe by Dr. J.J. Eldgridge
 +
|-
 +
| 14:15 - 15:00
 +
| The SKA: Hacking the Big Bang by Nicolás Erdödy
 +
|-
 +
|
 +
| Afternoon Tea
 +
|-
 +
| 15:40 - 16:00
 +
| Period Analysis of lightcurves of MoA database: finding periods of variable stars by Man Cheung Alex Li
 +
|-
 +
| 16:05 - 16:25
 +
| Data Mining the MOA Catalogue Using Machine-Learning Algorithms by Martin Donachie
 +
|-
 +
| 16:35 - 16:55
 +
| GPU-accelerated Modeling of Microlensing Events by Ashna Sharan
 +
|-
 +
| 17:00 - 17:20
 +
| Lightning Talks
 +
|-
 +
|
 +
|
 +
|}
  
Or the Attractions page is just a list of links. [[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 16:32, 9 December 2014 (AEDT)
 
:Yeah, got that. To help me fix such issues, it would be really handy if I had some superuser tools, such as the ability to move pages. Thanks. [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 16:42, 9 December 2014 (AEDT)
 
  
== Explaining the lca2015 and other lca wikis ==
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= Presentations abstracts and presenter bios =
  
Looking at your mediawiki extension shopping/wish list, I think some stuff should have been explained sooner and I was going to do this way back when I was looking for someone to help with the wiki.
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== Māori astronomy ==
 +
=== Dr. Pauline Harris ===
 +
<small>Dr Pauline Harris is from Rongomaiwahine and Ngāti Kahungunu.  Pauline has completed a Masters Degree in Astronomy and has been awarded a PhD in Astrophysics from Canterbury University. Her research investigated Gamma Ray Bursts as possible sites for high-energy neutrino production.  She is also a recipient of a Te Tipu Pῡtaiao Postdoctoral Award from the Foundation for Research, Science and Technology in the School of Chemical and Physical Sciences at Victoria University.
  
* User accounts
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Her research is currently dedicated to searching for extra-solar planets and the collation and revitalisation of Māori Astronomical star lore. Pauline has been involved in the revitalisation of Māori star lore for the past 7 years and has given many talks both in New Zealand and overseas pertaining to Māori Astronomy and Matariki/Puanga.  
** Users can't create an account to edit in the linux.conf.au wiki.
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** The only users who can edit the wiki are users who have signed up on the lca2015 website and that account is used for signing up in this wiki. That is why you couldn't create an account in this wiki when you first tried a few weeks ago, shortly after my email asking for help on wiki.
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** All users who edit the wiki have agreed to the lca2015 code of conduct and the terms & conditions.
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** This means your extensions for vandals, and the next list below it isn't needed.
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* Use of wiki
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Pauline is also heavily involved with Māori research in other areas as well, such as the relationship between Science and Mātauranga as well as within more specialised areas such as ethics in biotechnology. Dr Harris currently holds the position as Chair of the Society for Māori Astronomy, Research and Traditions (S.M.A.R.T) which has been established since 2009 and works to promote Astronomy and Natural Science as part of a Cultural and Scientific development incentive between Māori, Pacific and Polynesian communities and the wider New Zealand community. S.M.A.R.T aims to encourage the growth in numbers of Māori students, present and future, to pursue potential career paths within the Sciences, in particular, Astronomy. Dr Harris has co-authored two books and has published in a wide variety of forums. </small>
** The wiki will start to be used more and more the closer we get to the conference. I haven't kept track of how the previous wikis have grown or looked at how often they are used.  
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** After the conference there may be an edit or two to add links to stuff. For example if someone offered to find out about x, they may put the link to the info there etc.
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** Presenters may also edit it to add links to where the slides are for talks or where the talk videos are.
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** Attendees sometimes add links to their photos.
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** The amount of edits and even views on the wiki drops off after conference week.
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* If you need to link to lca2015 website, please always use the url with lca2015.linux.org.au. This means when the wiki is archived, along with website, links to the lca2015 website should still work.
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== Visualising the Open Universe ==
 +
Astronomy is unparalleled in its power to captivate and educate. This is, in large part, owing to the availability of sensationally detailed and evocative imagery of celestial objects returned from high performance telescopes and other instrumentation. Much of that data is open domain. Similarly, some of the best simulation tools are available for free, including, for example, Stellarium. This talk highlights the opportunity for the open source community to contribute to developing tools specifically designed to use the available open data. An example of this would be to create data visualisation tools for VR hardware such as the Oculus Rift -- or the open hardware equivalent. Such tools can be pressed into use in teaching laboratories now using available data bases and should be in place before data from the next generation of large scale surveys come online, including the output from the Large Synopic Survey Telescope.
  
Sorry will have to go now. will add more later
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=== Dr. Nicholas James Rattenbury ===
 +
<small>Dr. Nicholas James Rattenbury is a Royal Society of New Zealand Rutherford Discovery Fellow. He completed his PhD in Physics at the University of Auckland and shortly thereafter left to do post-doctoral research at Jodrell Bank Observatory, The University of Manchester. After nearly five years of research, he worked for several years as a trainee patent attorney before returning to academia at Manchester Metropolitan University. As an RDF, he is returning to New Zealand to continue his research in astrophysics.</small>
  
 +
== Open modelling of stars and galaxies from our own to those at the edge of the observable Universe ==
 +
One way to understand the stars is to put all our understanding of physics into a computer code and create synthetic stars to predict how they evolve over their lifetimes and compare these to observations. The story begins during my PhD when computers had just started becoming fast enough that it was possible to create 100's of stellar models in a day. This for the first time enabled us to create sets of stellar models with different physics to see which was correct. This was done using a stellar evolution code originally written in the 70s that has always been freely available and updated/adapted by many researchers around the world. It is also the code that was adapted to make the current most open stellar evolution code MESA.
  
[[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 19:06, 9 December 2014 (AEDT)
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I adapted the code specifically to look at massive stars, those that end their lives in supernovae. Also I included the physics of interactions in a binary star system which at that point all other stellar models ignored. The problem with binary models is there are more free parameters so you need to calculate 1000's of stellar models to see the full diversity of evolution. Therefore I had to not only adapt a FORTRAN code I also had to put together a code to put organise and baby sit 1000s of models running at the same time. This was done in PERL.
  
:Wow, a wiki without the threat of vandals! That will certainly make my life simpler. Thanks for explaining that Lin. Much of my former experience with wiki work has been in defeating spam, carefully patrolling user edits, and defeating spam, with a little bit of templating and categorizing thrown in for good measure, and defeating more spam. I'm looking forward to this spam-free environment. [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 19:20, 9 December 2014 (AEDT)
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Dr. Eldgridge will give an overview of the development of the BPASS (binary population and spectral synthesis) code which is the result of over a decade of work using open source tools and codes, and outline the next planed steps.
  
* Media like Video on lca wikis
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=== Dr. J.J. Eldgridge ===
** No videos or sound files are uploaded to the wiki
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<small>Dr. JJ Eldridge is a Senior Lecturer of Astrophysics in the Department of Physics at the University of Auckland, and conducts general research is in the field of stellar evolution—particularly the effects of binary pathways on stellar populations, and the progenitors of supernovae. Since completing a PhD thesis at the Institute of Astronomy of Cambridge University, J.J. has worked as a postdoctoral researcher at Queen’s University Belfast and the Institut d’Astrophysique de Paris before returning to Cambridge in 2007 to work as a post-doc, and then commencing a lectureship in 2011.</small>
** There will be links to videos + sound files so people know where they are. These are videos of talks or other videos.
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** Videos are uploaded somewhere like youtube (or vimeo).
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** The links to those videos are wiki'd so people know where they are. Also aren't always able to put the links on the conference website because the people who are able to update the lca conference site are usually too busy during the conference.  
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** Also won't be unusal if there's a server on campus with the video files so people who wish to down the vids before they head home may do so.
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** There is also a final repository for all the vids.
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** I don't think it is wise to have people run videos off the wiki. using youtube for videos means they use another network's infrastructure to cope with space + network.  
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* Uses of wiki at linux.conf.au
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== The SKA: Hacking the Big Bang ==
** Wiki to help organise events, both official + unofficial.
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The Square Kilometre Array (SKA) is an eleven countries mega-project -including New Zealand, to build a next generation radio telescope from 2018 till 2024 between Australia and South Africa. On an unprecedented scale, the SKA will revolutionise our understanding of the universe and the laws of fundamental physics; give insight into the formation of the first stars after the Big Bang; and, address one of humankind's ultimate questions: are we alone?
*** If a miniconf or tutorial needs a webpage, they are advised to use the wiki. If they don't wish to use the wiki, there'll be a link from the wiki to the actual miniconf/tutorial webpage. See the current miniconfs page as example. The Open Radio and Astronomy miniconfs are using the wiki for their page. The Sysadmin miniconf and open hardware miniconf have their own page.
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*** BOFs - Birds of a feather sessions are organised via wiki. This could be BOFs that happen at the scheduled time + place for BOFs or at other times. There's also activity like Yoga, martial arts, running that have BOFs.
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*** organising social events with other lca attendees. eg lca2014 had an outing to an Indian Ocean swim. There was a whiskey BOF that may or may not have been wiki'd at lca2011 (can't remember). Looks like there's a plan Auckland - Wellington rail trip.
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*** unPDNS - This is for people who are not going to the Penguin dinner. There's other evenings too and people organise something for that.
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*** As you see, the Partner's programme has a page in the wiki.
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** Wiki as repository of information useful to conference attendees
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This fantastic facility will consist of thousands of telescopes distributed in several countries however the SKA will actually be the largest and most powerful high performance computer in the planet by far -with a radio telescope "attached" to it. The exascale computational requirements for the SKA are beyond the capabilities of existent technologies: they are needed to enable the SKA to scan the skies thousands of times faster than ever before, producing vast amounts of valuable data, at rates in to Tb/s (100x the global internet traffic).
*** This is already happening but may need some help with. I am not sure if anyone is coordinating the stuff. Thing like what mobile networks we have, what sort of plugs + votage for electricity, where to go for emergency info.
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*** where to eat, drink, play while they are at the conference.  Much of this is by conference attendees.
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*** what logos of badge mean
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*** Swag - usually one of the attendees lists out the swag they receive + others add to it. some even take a pic + link to pic. This is mostly done by attendees.
+
  
 +
The SKA's power will come from it being a software-controlled and software-dependent telescope. This will allow the SKA's designers to continuously take advantage of advances in computer power, algorithm design and data transport capability, always keeping SKA up to date. Around 500 engineers, scientists and researchers worldwide are contributing to the SKA’s design and development. Open Parallel (based in Oamaru, somewhere in the South Island of New Zealand) is leading the design of the Software Development Environment for the Central Signal Processor -the “brain” of the SKA.
  
** Wiki as source of link to info useful to conference attendees.
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In this talk, Nicolás will present the SKA and its incredible computing challenges; and share some thoughts on designing a software stack for massively distributed systems; and c) some questions -to share with the audience, about (other) possible applications of the SKA...
*** links to video, slides, github repos for talks or even for stuff someone is talking about at a BOF or think someon at the conference may find useful.
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*** Attendees sometimes add a link to where their lca photo album is.  
+
  
 +
=== Nicolás Erdödy ===
 +
<small>Nicolás Erdödy is the founder of Open Parallel, a company contributing to the Square Kilometre Array (SKA), the largest IT project in the world. He leads his own business consultancy and previously founded and managed a few ventures, including software, high-tech and e-learning companies. Born in Uruguay from Hungarian parents, he's now a kiwi in Oamaru where no one has a clue what he does for a living. His hobby is to collect citizenships and forgot FORTRAN decades ago but still knows how to ask for a beer in five or six human languages. He also organises Multicore World since 2012.</small>
  
[[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 22:28, 10 December 2014 (AEDT)
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== Period Analysis of lightcurves of MoA database: finding periods of variable stars ==
 +
Microlensing of Astrophysics (MoA) is a world-leading collaboration between Japan and New Zealand on detecting exoplanets by microlensing techniques, which require long-term monitoring over the night sky with wide-field CCD camera to optimize the chance of any planet detections. As a result, numerous stars towards the Galactic bulge have been observed, night by night, over six years. Many of them should be variable stars which show either periodic or pseudo-periodic variability in their brightness.
  
:Thanks Lin, that's all useful information and I'll bear it in mind as I work on the wiki. I'm wanting to help coordinate / curate the repository of information that is on the wiki, including gathering links to resources such as bus timetables, mobile network info, local eateries around the venue, etc. That is a big part of the attraction for me in helping out with the LCA wiki. It is an opportunity for me to put my Aspie tendencies to good use! [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 04:31, 11 December 2014 (AEDT)
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In this talk, I will introduce the three period finding methods that I adopted in my research: conditional entropy, string-length method and phase dispersion method (PDM), compare their pros and cons with each other, and present the open-source codes of these methods that I write by modifying the exsiting open-source codes (e.g. PMD2 written by Stellingwerf) running on Linux.
 +
=== Man Cheung Alex Li ===
 +
<small> </small>
 +
== Data Mining the MOA Catalogue Using Machine-Learning Algorithms ==
 +
The Microlensing Observations in Astrophysics (MOA) project is a joint New Zealand-Japan astronomical collaboration, which has been running for the past two decades in order to search for gravitational microlensing events. Microlensing is a phenomenon predicted by Einstein’s general theory of relativity, and is characterised by the transient brightening of a background star due to the motion of an intermediate massive object near the line-of-sight. Observations made towards the galactic bulge by the MOA telescope—based in Canterbury—have detected thousands of microlensing events throughout the duration of the project. However, this characteristic signature is not unique to microlensing: many other astrophysical phenomena exhibit a similar temporal variability in brightness, and have also been catalogued. The result is that the MOA catalogue now contains millions of light curves—the vast majority of which have yet to be analysed— and is the largest astronomical database in New Zealand. The aim of my particular project is to make use of machine-learning (ML) algorithms in order to classify these light curves into distinct types of astrophysical events. To do so I am using “Weka”, an open-source software workbench of ML techniques developed by the Department of Computer Science at the University of Waikato. More specifically, I am using the Weka implementation of the random forest classifier, a tree-based supervised ML method. I propose to briefly outline the astrophysics of microlensing and the MOA project, before some discussion about ML in general; then a more in-depth analysis of the Weka implementation of the RF classifier and its application to this particular problem.
  
:: I have the info to add just not the time. So when I get back to Auckland will send you the links to add etc. Sorry for the delay. [[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]])
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=== Martin Donachie ===
 +
<small> </small>
  
: Image Map extension
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== GPU-accelerated Modeling of Microlensing Events ==
I think this is a good idea, especially for the venue map. However if it is actual maps, I'd like to see the use of google Maps or Open Street Maps. It won't be unusual to find that once we start putting in info, we will end up one of the attendees creating an open Street map for the conference.
+
Gravitational microlensing is a phenomenon whereby the light from a background source star is bent by the gravity of a foreground lens system causing the source star to appear to change its apparent brightness with time. These events are popularly being used to discover exoplanets. One of the techniques used to model these events is called inverse ray shooting which is a brute force method that shoots billions of rays from the observer plane through the lens plane onto the source plane. Inverse Ray Shooting is used to create magnification maps from which theoretical lightcurves can then be extracted for the purpose of model fitting to observational data.  
  
[[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 07:00, 12 December 2014 (AEDT)
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GPU-accelerated inverse ray shooting accomplishes magnification map creation and source track extraction in seconds instead of hours as is the case with the CPU version of the same algorithm. This algorithm was developed by [cho_hong_ling_simulation_2013]and is run remotely on a desktop PC equipped with GPU archtiecture which is accessed via SSH capability on Linux.
 
+
=== Ashna Sharan ===
== What is needed ==
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<small> </small>
 
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== Lightning talks ==
* Are there more links we need to add to the left margin? All I've asked for is a link back to the lca2015 website. One or two of the earlier wikis added links to programme items that are on the wiki like Miniconf, BOFs, Tutorials page.  Should we add a link to the  [[Special:AllPages]] page?
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* If you use template pages, would a user who wishes to opt out of using your template be able to do so easily?
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* What template pages are you planning to have?
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* What will the front page look like?
+
 
+
[[User:Lin Nah|Lin Nah]] ([[User talk:Lin Nah|talk]]) 07:00, 12 December 2014 (AEDT)
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:* I'm expecting to be able to provide a comprehensive navigation package for the wiki, to make all pages readily available without the need for any extra links on the sidebar. I generally put my own custom editing links on the sidebar using [http://www.uesp.net/wiki/User:Daric_Gaersmith/monobook.js ModifySidebar.js] in my own userspace, but I see that is not enabled on this wiki either. I guess user-side scripts are not normally a feature of LCA wiki's?
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:* The userspace templates I've been implementing are purely opt-in, rather than opt-out. They aren't in any way obligatory, or even necessary. They're more for the fun of it. The navigation templates that I'm using for the main namespace are a more serious consideration, as they are there for the benefit of the users of the wiki. If someone creates a page, such as for a BoF, but doesn't add the navigation template, I'll probably come along later myself and add it to the page. If editor's don't want the nav templates added to their pages, they could leave a comment at the top of the page, like a no-bots type notice in HTML &lt;!-- comments  --&gt; tags. <!-- please don't add any nav templates to this page -->
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:** We should probably standardise the comment message, so that if we do end up running a pywikipediabot to add the nav templates, it can automatically identify and ignore pages tagged as such.
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:* The main navigation templates I'm thinking of are a breadcrumb trail as they used on the LCA2009 wiki, along with a navbar footer, and comprehensive use of a "see also" hatnote, or even just the "see also" section on a page. Do you think that should be enough for aiding navigation of the wiki? Too much?
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:* As for the front page, that really depends on how soon we can get the [https://www.mediawiki.org/wiki/Extension:Tabber Tabber] extension installed. If that gets installed soon, then I can make up something that looks a bit like my [http://bot.orain.org BotWiki] front page, which I got the idea for from the [https://mediawikitesters.orain.org MediaWikiTesters] wiki on [https://meta.orain.org Orain]. If not, then I guess it will look a lot like the previous wikis', but with the aforementioned breadcrumb trail and navbar footer.
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:I hope that answers your questions sufficiently. Feel free to lob anything else at me as you think of it. I'm really ramping up my LCA2015 wiki involvement now, and putting a lot of effort into it. So treat me like a ship under full steam, needing a nudge every now and then to keep me on course! [[User:Augur_.|<font color="#703931">'''ᏜᏠᎶᏠᏑ'''</font>]][[User_talk:Augur_.|<font size="4" color="#723a32">&#x2710;</font>]][[Special:Contributions/Augur_.|<font size="4" color="#723a32">&#x2315;</font>]] 13:58, 12 December 2014 (AEDT)
+

Revision as of 02:21, 20 December 2014

< Main Page < Programme < Miniconfs


About Schedule Presentations and Presenters Call for Presentations


Schedule

Time Presentation
10:40 - 10:45 Welcome by Jessica Smith
10:45 - 11:25 Māori astronomy by Dr. Pauline Harris
11:35 - 12:20 Visualising the Open Universe by Dr. Nicholas James Rattenbury
Lunch
13:20 - 14:05 Open modelling of stars and galaxies from our own to those at the edge of the observable Universe by Dr. J.J. Eldgridge
14:15 - 15:00 The SKA: Hacking the Big Bang by Nicolás Erdödy
Afternoon Tea
15:40 - 16:00 Period Analysis of lightcurves of MoA database: finding periods of variable stars by Man Cheung Alex Li
16:05 - 16:25 Data Mining the MOA Catalogue Using Machine-Learning Algorithms by Martin Donachie
16:35 - 16:55 GPU-accelerated Modeling of Microlensing Events by Ashna Sharan
17:00 - 17:20 Lightning Talks


Presentations abstracts and presenter bios

Māori astronomy

Dr. Pauline Harris

Dr Pauline Harris is from Rongomaiwahine and Ngāti Kahungunu. Pauline has completed a Masters Degree in Astronomy and has been awarded a PhD in Astrophysics from Canterbury University. Her research investigated Gamma Ray Bursts as possible sites for high-energy neutrino production. She is also a recipient of a Te Tipu Pῡtaiao Postdoctoral Award from the Foundation for Research, Science and Technology in the School of Chemical and Physical Sciences at Victoria University.

Her research is currently dedicated to searching for extra-solar planets and the collation and revitalisation of Māori Astronomical star lore. Pauline has been involved in the revitalisation of Māori star lore for the past 7 years and has given many talks both in New Zealand and overseas pertaining to Māori Astronomy and Matariki/Puanga.

Pauline is also heavily involved with Māori research in other areas as well, such as the relationship between Science and Mātauranga as well as within more specialised areas such as ethics in biotechnology. Dr Harris currently holds the position as Chair of the Society for Māori Astronomy, Research and Traditions (S.M.A.R.T) which has been established since 2009 and works to promote Astronomy and Natural Science as part of a Cultural and Scientific development incentive between Māori, Pacific and Polynesian communities and the wider New Zealand community. S.M.A.R.T aims to encourage the growth in numbers of Māori students, present and future, to pursue potential career paths within the Sciences, in particular, Astronomy. Dr Harris has co-authored two books and has published in a wide variety of forums.

Visualising the Open Universe

Astronomy is unparalleled in its power to captivate and educate. This is, in large part, owing to the availability of sensationally detailed and evocative imagery of celestial objects returned from high performance telescopes and other instrumentation. Much of that data is open domain. Similarly, some of the best simulation tools are available for free, including, for example, Stellarium. This talk highlights the opportunity for the open source community to contribute to developing tools specifically designed to use the available open data. An example of this would be to create data visualisation tools for VR hardware such as the Oculus Rift -- or the open hardware equivalent. Such tools can be pressed into use in teaching laboratories now using available data bases and should be in place before data from the next generation of large scale surveys come online, including the output from the Large Synopic Survey Telescope.

Dr. Nicholas James Rattenbury

Dr. Nicholas James Rattenbury is a Royal Society of New Zealand Rutherford Discovery Fellow. He completed his PhD in Physics at the University of Auckland and shortly thereafter left to do post-doctoral research at Jodrell Bank Observatory, The University of Manchester. After nearly five years of research, he worked for several years as a trainee patent attorney before returning to academia at Manchester Metropolitan University. As an RDF, he is returning to New Zealand to continue his research in astrophysics.

Open modelling of stars and galaxies from our own to those at the edge of the observable Universe

One way to understand the stars is to put all our understanding of physics into a computer code and create synthetic stars to predict how they evolve over their lifetimes and compare these to observations. The story begins during my PhD when computers had just started becoming fast enough that it was possible to create 100's of stellar models in a day. This for the first time enabled us to create sets of stellar models with different physics to see which was correct. This was done using a stellar evolution code originally written in the 70s that has always been freely available and updated/adapted by many researchers around the world. It is also the code that was adapted to make the current most open stellar evolution code MESA.

I adapted the code specifically to look at massive stars, those that end their lives in supernovae. Also I included the physics of interactions in a binary star system which at that point all other stellar models ignored. The problem with binary models is there are more free parameters so you need to calculate 1000's of stellar models to see the full diversity of evolution. Therefore I had to not only adapt a FORTRAN code I also had to put together a code to put organise and baby sit 1000s of models running at the same time. This was done in PERL.

Dr. Eldgridge will give an overview of the development of the BPASS (binary population and spectral synthesis) code which is the result of over a decade of work using open source tools and codes, and outline the next planed steps.

Dr. J.J. Eldgridge

Dr. JJ Eldridge is a Senior Lecturer of Astrophysics in the Department of Physics at the University of Auckland, and conducts general research is in the field of stellar evolution—particularly the effects of binary pathways on stellar populations, and the progenitors of supernovae. Since completing a PhD thesis at the Institute of Astronomy of Cambridge University, J.J. has worked as a postdoctoral researcher at Queen’s University Belfast and the Institut d’Astrophysique de Paris before returning to Cambridge in 2007 to work as a post-doc, and then commencing a lectureship in 2011.

The SKA: Hacking the Big Bang

The Square Kilometre Array (SKA) is an eleven countries mega-project -including New Zealand, to build a next generation radio telescope from 2018 till 2024 between Australia and South Africa. On an unprecedented scale, the SKA will revolutionise our understanding of the universe and the laws of fundamental physics; give insight into the formation of the first stars after the Big Bang; and, address one of humankind's ultimate questions: are we alone?

This fantastic facility will consist of thousands of telescopes distributed in several countries however the SKA will actually be the largest and most powerful high performance computer in the planet by far -with a radio telescope "attached" to it. The exascale computational requirements for the SKA are beyond the capabilities of existent technologies: they are needed to enable the SKA to scan the skies thousands of times faster than ever before, producing vast amounts of valuable data, at rates in to Tb/s (100x the global internet traffic).

The SKA's power will come from it being a software-controlled and software-dependent telescope. This will allow the SKA's designers to continuously take advantage of advances in computer power, algorithm design and data transport capability, always keeping SKA up to date. Around 500 engineers, scientists and researchers worldwide are contributing to the SKA’s design and development. Open Parallel (based in Oamaru, somewhere in the South Island of New Zealand) is leading the design of the Software Development Environment for the Central Signal Processor -the “brain” of the SKA.

In this talk, Nicolás will present the SKA and its incredible computing challenges; and share some thoughts on designing a software stack for massively distributed systems; and c) some questions -to share with the audience, about (other) possible applications of the SKA...

Nicolás Erdödy

Nicolás Erdödy is the founder of Open Parallel, a company contributing to the Square Kilometre Array (SKA), the largest IT project in the world. He leads his own business consultancy and previously founded and managed a few ventures, including software, high-tech and e-learning companies. Born in Uruguay from Hungarian parents, he's now a kiwi in Oamaru where no one has a clue what he does for a living. His hobby is to collect citizenships and forgot FORTRAN decades ago but still knows how to ask for a beer in five or six human languages. He also organises Multicore World since 2012.

Period Analysis of lightcurves of MoA database: finding periods of variable stars

Microlensing of Astrophysics (MoA) is a world-leading collaboration between Japan and New Zealand on detecting exoplanets by microlensing techniques, which require long-term monitoring over the night sky with wide-field CCD camera to optimize the chance of any planet detections. As a result, numerous stars towards the Galactic bulge have been observed, night by night, over six years. Many of them should be variable stars which show either periodic or pseudo-periodic variability in their brightness.

In this talk, I will introduce the three period finding methods that I adopted in my research: conditional entropy, string-length method and phase dispersion method (PDM), compare their pros and cons with each other, and present the open-source codes of these methods that I write by modifying the exsiting open-source codes (e.g. PMD2 written by Stellingwerf) running on Linux.

Man Cheung Alex Li

Data Mining the MOA Catalogue Using Machine-Learning Algorithms

The Microlensing Observations in Astrophysics (MOA) project is a joint New Zealand-Japan astronomical collaboration, which has been running for the past two decades in order to search for gravitational microlensing events. Microlensing is a phenomenon predicted by Einstein’s general theory of relativity, and is characterised by the transient brightening of a background star due to the motion of an intermediate massive object near the line-of-sight. Observations made towards the galactic bulge by the MOA telescope—based in Canterbury—have detected thousands of microlensing events throughout the duration of the project. However, this characteristic signature is not unique to microlensing: many other astrophysical phenomena exhibit a similar temporal variability in brightness, and have also been catalogued. The result is that the MOA catalogue now contains millions of light curves—the vast majority of which have yet to be analysed— and is the largest astronomical database in New Zealand. The aim of my particular project is to make use of machine-learning (ML) algorithms in order to classify these light curves into distinct types of astrophysical events. To do so I am using “Weka”, an open-source software workbench of ML techniques developed by the Department of Computer Science at the University of Waikato. More specifically, I am using the Weka implementation of the random forest classifier, a tree-based supervised ML method. I propose to briefly outline the astrophysics of microlensing and the MOA project, before some discussion about ML in general; then a more in-depth analysis of the Weka implementation of the RF classifier and its application to this particular problem.

Martin Donachie

GPU-accelerated Modeling of Microlensing Events

Gravitational microlensing is a phenomenon whereby the light from a background source star is bent by the gravity of a foreground lens system causing the source star to appear to change its apparent brightness with time. These events are popularly being used to discover exoplanets. One of the techniques used to model these events is called inverse ray shooting which is a brute force method that shoots billions of rays from the observer plane through the lens plane onto the source plane. Inverse Ray Shooting is used to create magnification maps from which theoretical lightcurves can then be extracted for the purpose of model fitting to observational data.

GPU-accelerated inverse ray shooting accomplishes magnification map creation and source track extraction in seconds instead of hours as is the case with the CPU version of the same algorithm. This algorithm was developed by [cho_hong_ling_simulation_2013]and is run remotely on a desktop PC equipped with GPU archtiecture which is accessed via SSH capability on Linux.

Ashna Sharan

Lightning talks