Conferences, talks, and research visits
Here is a list of talks, invited presentations and participations, research visits, etc.Please click on the headings to expand the lists.

Jun'18
Italy: Algebra Seminar, University of Trento (2018). May'18 Australia: MathematiciansinSchools, five problem solving sessions for Year 9 at Forrest Hill College, Melbourne. Dec'17 Australia: 5th International Combinatorics Conference, Monash University, Melbourne. Sep'17 Australia: MathematiciansinSchools, two workshop for Year 9 at Forrest Hill College, Melbourne. Sep'17 Australia: 'LunchMath Talk' at Monash University (2017). Feb'17 New Zealand: Algebra Workshop, University of Auckland (2017). Nov'16 Australia: 34nd Victorian Algebra Conference, La Trobe University (2016). Nov'16 India: Group Theory & Computational Methods (Conference), ICTS, Bangalore (2016). Nov'16 India: Group Theory & Computational Methods (Workshop), ICTS, Bangalore (2016).
See here for the lecture material (5+3hours).Oct'16 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2016). Aug'16 Germany: Oberwolfach workshop 'Computational Group Theory', Oberwolfach (2016).
Jul'16 Germany: Algebra Seminar, University of Braunschweig. Jun'16 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2016). Apr'16 Australia: Tall Poppy Talk, a presentation for teachers at Fintona Girls School, Melbourne. Sep'15 Australia: MathematiciansinSchools, a workshop series on mathematical riddles and tricks (8 lessons for Year 9) at Forrest Hill College, Melbourne. May'15 Australia: Groups and Combinatorics Seminar at UWA, Perth (2015) Apr'15 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2015). Mar'15 Australia: 'LunchMath Talk' at Monash University (2015). Feb'15 Germany: Workshop 'Computations in Groups and Algebras', University of Jena (2015). Nov'14 Canada: Banff Research Station Workshop 'Algorithms for Linear Groups' (2014). Nov'14 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2014). Oct'14 Australia: MathematiciansinSchools, a course on coding theory and cryptography (7 lectures for Year 10) at Forrest Hill College, Melbourne. Sep'14 Australia: Research Seminar, Melbourne University (2014). Aug'14 South Korea: The 4th International Congress on Mathematical Software, Seoul (2014). May'14 Australia: Colloquium, University of Adelaide (2014). Apr'14 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2014). Mar'14 Canada: Banff Research Station Workshop 'Global/Local Conjectures in Representation Theory of Finite Groups' (2014). Mar'14 Australia: MathematiciansinSchools, PiDay presentation at Forrest Hill College, Melbourne. Feb'14 New Zealand: Algebra and Combinatorics Workshop, University of Auckland. Nov'13 Australia: 31st Victorian Algebra Conference, University of Melbourne (2013). Nov'13 Australia: Colloquium, La Trobe University, Melbourne (2013). Oct'13 Australia: 57th Annual Meeting of the Australian Mathematical Society, University of Sydney (2013). Oct'13 Australia: MathematiciansinSchools, two introductory talks at Forrest Hill College, Melbourne. Aug'13 Australia: Science Snippets, Monash University, Melbourne (2013).
(See here for a youtube clip.)Jul'13 Taiwan: Seminar at National Cheng Kung University, Tainan City. Jun'13 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2013). Mar'13 Australia: Algebra and Discrete Mathematics Seminar at Monash University, Melbourne (2013). Dec'12 Germany: Conference on group and representationtheory in Aachen (2012).
Sep'12 New Zealand: Algebra Seminar at the University of Auckland. Apr'12 Australia: Mathematics Seminar at Monash University, Melbourne (2012). Oct'11 Italy: Algebra Seminar at the University of Trento, Trento. Aug'11 Germany: Oberwolfach workshop 'Computational Group Theory', Oberwolfach (2011). Jul'11 New Zealand: University of Waikato, Hamilton. Dec'10 Germany: FriedrichSchiller University Jena. Dec'10 New Zealand: NZ Mathematical Colloquium 2010, Dunedin (2010). Dec'09 New Zealand: Group Theory Workshop, University of Auckland. Dec'09 New Zealand: NZ Mathematical Colloquium 2009, Albany (2009). Aug'09 England: Groups St.Andrews 2009, Bath (2009). Aug'08 England: Conference on Computational Group Theory and Cohomology, Harlaxton College (2008). Jul'08 England: South England Profinite Groups Meeting, Cambridge (2008). Jul'08 Germany: Seminar Computational Algebra and Number Theory, Düsseldorf (2008). Sep'07 Germany: GAP Package Authors Workshop, Braunschweig (2007). Sep'07 Austria: Sommerakademie der Studienstiftung des Deutschen Volkes 2007, St. Johann. Apr'07 Germany: Doktorandenforum der Studienstiftung des Deutschen Volkes, Wittenberg. Mar'07 USA: Zassenhaus 2007 Conference in St. Louis, Missouri (2007). Mar'07 USA: AMS 2007 Spring Southeastern Section Meeting, Davidson (2007). Jul'06 Germany: Oberwolfach workshop 'Computational Group Theory', Oberwolfach (2006).
Nov'05 New Zealand: Algebra Seminar, University of Auckland. Sep'05 Germany: DMV Student Conference in Dortmund (2005).
Dec'04 Germany: Conference on group and representationtheory in Aachen (2004).

Jul'18 Germany: 2Day Meeting in Stuttgart on Computational Lie Theory,
University of Stuttgart (2018).Dec'14 Australia: 8th Australia and New Zealand Mathematics Convention,
University of Melbourne (2014).Jul'12
Italy: Symmetric Spaces and their Generalisations II, Levico Terme (2012). Jun'12
Italy: Group Theory in Trento 2012, University of Trento (2012). Jan'10
New Zealand: 2010 NZMRI Summer Workshop, Hanmer Springs (2010).
Apr'09
Ireland: BMC 2009 / IMS, Galway (2009).
Dec'08
Germany: Conference on group and representationtheory in Aachen (2008).
Mar'08 USA: Groups and Computation V, Columbus, Ohio (2008). Nov'07
Germany: Norddeutsches Gruppentheorie Kolloquium 2007, Magdeburg (2007).
Jun'07 Germany: Graphentheorie und GeometrieTag, Braunschweig. Dec'06
Germany: Conference on group and representationtheory in Aachen (2006).
Nov'06
Germany: Norddeutsches Gruppentheorie Kolloquium 2006, Kaiserslautern (2006).
Jul'06 England: Groups and Computation 2006, Queen Mary University, London (2006). Jun'04 Germany: Lie algebras, their classification and applications, Braunschweig. 
Dec'18 Germany: ResearchinPairs visit to the MFO (Oberwolfach).
Oct'18 New Zealand: Visiting the University of Auckland.
Jun'18 Italy: Visiting the University of Trento.
Feb'17 New Zealand: Visiting the University of Auckland.
Aug'16 Germany: Visiting the RWTH Aachen.
Jul'16 Italy: Visiting the University of Trento.
Jul'16 Germany: Visiting the University of Braunschweig.
Nov'15 Germany: Visiting the University of Braunschweig.
May'15 Australia: Visiting the Universiy of Western Australia.
Jan'15 New Zealand: Visiting the University of Auckland.
Jan'16 New Zealand: Visiting the University of Auckland.
Jul'14 Germany: Visiting the University of Braunschweig.
Feb'14 New Zealand: Visiting the University of Auckland.
Jul'13 Taiwan: Visiting the National Cheng Kung University.
Sep'12 New Zealand: Visiting the University of Auckland.
Nov'11 Germany: Visiting the University of Braunschweig.
Sep'11 Germany: Visiting the University of Braunschweig.
Aug'11 England: Visiting the Queen Mary College at the University of London.
Feb'07  Mar'07 USA: Visiting the University of Evansville in Indiana.
Oct'05  Jan'06 New Zealand: Visiting the University of Auckland.

Oct'14 Coorganiser of the 32nd Victorian Algebra Conference, Monash University, Melbourne. Aug'14 Coorganiser of the special session 'Computational Group Theory', 4th ICMS, Seoul, South Korea. Jun'12 Coorgansiser of Groups in Trento 2012, University of Trento, Italy. Sep'07 Helped with the GAP Package Authors Workshop at the University of Braunschweig, Germany. 
Jul'09 Scotland: Workshop Matrix Group Recognition, Edinburgh (2009).
(See here for the poster.)