Friday, October 31, 2014

Academics and Social Media - What's the Right Balance?

This week I came across an article written two years ago by Tanya Roscorla, "Why Educators Should Spend 15 Minutes a Day on Social Media", in which she gives the "why" and the "how" educators should make digital connections on-line. My first reaction was "only 15 minutes"? - It takes me about that length of time just to write this post!
Image Source: The American Ceramic Society.
Roscorla writes that some educators find that Twitter helps them stay on top of their game. Connecting on-line through Twitter, LinkedIn, and Google+ both to colleagues in the same institution, and academics elsewhere increases collaboration and sharing of ideas. Academics are, in my experience, bit more likely to share their work for free on-line. In fact, the last academic paper I read (this one by Zhang, Larkin, and Lucey, 2014) was shared by @brianmlucey on Twitter - otherwise I would not have seen or heard of it.

Quite a few years ago I made the decision to use YouTube, my blog, and Twitter for both personal and work reasons. While I am very careful what I write, I regard it as part of my job to make content available on-line and comment on educational matters. Some years ago a student made a complaint to me that I had not responded to an email, and that while the student was waiting for a response - I had posted to my blog. Understandable irritation in one sense if a student sees me blogging or tweeting while they are waiting for a grade or a response. Nevertheless, as Roscorla mentions in her article, educators must find the time (in sometimes very busy schedules), to spend at least 15 minutes a day on social media, and that they "have to decide that connecting online is important". When something is important, we have to find the time for it - finding the right balance is the difficult part.

Recently, an educational colleague from another institution said to me that I "was not busy enough" if I have time for the likes of YouTube, Twitter, and this Blog. In one sense, she was right - there is no mention of social media in my job description, and I am being paid as I spend time in this medium. For me though, it is part of what I do and part of what I am. While I spend a bit more than 15 minutes a day on Social Media - it is part of my job and is here to stay.

PS - this article took 22 minutes to write!

Thursday, October 30, 2014

Google Glass in Education? via @ValaAfshar #googleglass

I suppose that it was inevitable that the good folks at Google would take wearable technology to the next level and beyond. The exciting looking and sounding Google Glass looks set to become part of human life as Google comes up with more and more wonderful things that it can do. I've not yet seen one, nor have I spoken to anyone who has tried it out - I would just love to have one!

Vala Afshar is Chief Marketing Officer with the Extreme Networks company, and today I picked up a Slideshare presentation he made on 14 Google Glass Innovative uses in education - it makes for interesting thought (I'd like to see the actual presentation). Some of the ideas are simple, eg (from transcript): 
  • PROFESSOR CAN WEAR GLASS DURING LECTURE AND OPEN UP A HANGOUT SO STUDENTS CAN PARTICIPATE REMOTELY

while others definitely could catch on:
  • DEVELOP A GOOGLE GLASS APP TO TAKE ATTENDANCE AND PULL RECENT GRADES FOR STUDENTS TO ASSIST FACULTY IN THE CLASSROOM

When I got an iPad a few years ago I genuinely thought that I would make use of it in class, but now I don't even bother to bring it to College - too awkward. A Google Glass device could make interaction more seamless and easy. Check out Afshar's ideas in the slideshow below - I look forward to seeing more and more innovation in this space!

Tuesday, October 28, 2014

Reading Week - Good or Bad?

This week it is the so-called mid-semester "Reading Week" in NCI. Many other Colleges also have a Reading Week, though I'm not sure that all do. It was introduced here a few years ago and usually takes place in week 7 or 8. It also coincides with the October Bank Holiday and St Patrick's Day in March - in reality the Reading Week is four instead of five days.

Image source: Youth Utility.
Is the Reading Week "nothing but a poorly disguised trip home for a visit to Mum’s tumble drier" as described by student Eleanor Doughty in The Independent article "Reading week: What is it good for?" published last year?

In my classes I of course advise my students to use the Reading Week to catch up on the first six weeks, work on assignments and projects due later in the semester, and to study. How much of this is done I don't know, but I do know that when I ask students when they come back how much work they've done, the answer is usually very little to none. 

Around this time last year I wrote a post about Semester Fatique, which was read by 755 people (much higher than the average most posts get). For me it is nice to get a break from classes, though I am still at work. For students it is good to get a break from classes as our semesters are very long - probably too long. The Reading Week does offer the opportunity to catch up and study, but even if it just provides a break so that students can return a little refreshed and ready for the rest of the semester, it is probably still a good thing to have in the Academic Calendar.

Friday, October 24, 2014

Linkedin "Jobs you may be interested in" - Still A Long Way To Go

I am a part-time Linkedin enthusiast. I keep my profile up-to-date and connect with lots of interesting people, and both my blog and Twitter feeds post automatically to my Linkedin account. I am often puzzled as to why some people I don't know would want to connect with me, and I am definitely puzzled when someone endorses me for something I have never done!

Thankfully I am not seeking work, but that doesn't stop Linkedin sending me links to jobs I "may be interested in". My occupation is a Lecturer in Computing, so I guess some (simple and crude) Linkedin algorithm is picking out the word "Lecturer" from my profile so that it can recommend other Lecturer positions to me regardless of discipline. 

Today Linkedin tells me that I might be interested in the job of "Lecturer in Anatomy" and other positions that I have no experience or qualifications for. I did not attend Med School, I have no medical qualifications (not even First Aid!), and I certainly have never had anything to do with the study of Anatomy.

So - while Linkedin may be useful in some circumstances for job-hunters, it certainly still has a long way to go before it can match a Linkedin Profile with a vacant position. Matching skills needs and competencies is still a difficult task, and Linkedin have a long way to go.

PS: I did not apply for this job! 


Thursday, October 23, 2014

Microsoft Ends Nokia Brand #nostalgia

Yesterday the Irish Independent reported "End of an era: Microsoft drops Nokia brand for Lumia" in favour of its own Lumia range of Windows smartphones. It is indeed the "end of an era" as for many of us a Nokia phone was a first mobile phone choice.

The Nokia 5110.
Image Source: Iretron.com.
My first mobile phone was the Nokia 5110 like the one to the left - it was launched in 1998 on the Eircell network. Yes - for almost the first 40 years of my life I did not have a mobile phone! Harder even still to imagine is that Nokia was once a company that made toilet paper!

I used it for making/receiving calls, and playing "Snake". Text messaging was not yet that popular. It was a novelty that hardly ever rang when I got it as not everybody had a mobile phone. I rarely used it at work though it was handy for calling home when I travelled (except in USA where it didn't work). One of my toughest project management assignments was for a custom e-Learning project for Nokia - they certainly demanded a lot from me and my team.

Now that Microsoft are retiring this brand I'm sure there will be some nostalgia for the old handsets in the way that vinyl is making a comeback. Perhaps we will see this, and the many other early mobile phones in museums. Its already being called a "vintage phone" on eBay!

Friday, October 17, 2014

Grade Inflation at Third-Level #MyTwoCents

Why is it that if students work harder and get better grades that the media latch on to the "grade inflation" bandwagon? This week the Irish Times blasts that "DCU, UCC award more ‘firsts’ in new indicator of grade inflation" and that some students "have a much higher chance of graduating with a first class honours degree than other college-goers" and that new figures are a "fresh indicator" of “grade inflation”. There is no reason why the figures quoted, such as "between 2004 and 2013, an average of 71.7 per cent of students at TCD graduated with either a 1st or a 2.1" are much different in other third-level Colleges such as the ITs and NCI.

Normal Distribution.
Image Source: Wikipedia.
I would be interested to see what the overall distribution of grades by actual mark is. We don't mark to a bell curve - not allowed to. For example, a "First" is an average grade of 70% or over - if you get 71% or 99% it is still a First. Data like these are usually normally distributed, but the Irish Times omits reference to this or the variation. The Times does quote a source from Trinity that it attracted “exceptionally bright cohorts of students”. This is most likely as a consequence of rising CAO points at the entry level. If you have a course, such as Science in Trinity where points have been rising steadily for years, the calibre of students entering is getting stronger. See below a table of the points required for Science (I don't know what the grades are for this course) in Trinity since 2008 (source CAO.ie):

2008415 points
2009440 points
2010 455 points
2011 470 points
2012 500 points
2013 505 points
2014 515 points

The number of points needed has increased by a whopping 100 in six years, but the degree course is most likely substantially the same. Is it any wonder students will do better? Should Colleges start to mark harder, set tougher tests, or not let the bell curve move in order to avoid accusations of grade inflation? 

Today's students are also a lot smarter when it comes to assessments and exams - they can cram a lot better than any student from the past, and with a lot more continuous assessment about - there are more opportunities for getting better grades. Many recruiters require at least a 2:1, so guess what? Students respond to these needs. Students don't get better results without working for them - if they get a First, then award a First!

Sunday, October 12, 2014

Visit to Titanic Experience in Belfast

This weekend I made a quick visit to Belfast and checked out the the Titanic Experience for the first time. The building is shaped like the bow of the Titanic and inside there is a lot of information about Belfast, Harland and Wolff, Shipbuilding, and of course the tragedy of the Titanic. A lot of Irish people died in the sinking of the unsinkable, including the ship's surgeon Dr William Francis Norman O'Loughlin - a native of Tralee in Co Kerry near where my O'Loughlin ancestors came from. He is listed among the dead on the memorial outside the building where the Titanic and its sister ship the Olympic were built. Even though he was born in Ireland and died before Independence, he is listed as being of "British" nationality in the Experience's computer list of the dead (many others were listed as "Irish" ).

The Experience was well worth the visit, though at £42.99 for three of us it was a bit expensive. There are a lot of audio-visual features and a great ride "inside" the ship to show how it was put together. There are no relics (that I could see) of the Titanic brought up from where the ship now lies - I suppose this is not surprising in the city where it was built. I was a bit surprised though that there was very little from the ship yard - some drawings, contracts, but not many rivets or parts of ships. There was some reconstruction of cabins which really helped you see how some people travelled in luxury. Lots of black and white photos were brilliant - really gave a sense of times past.

The tour took about 2 hours and is well worthwhile, despite the steep cost.




Saturday, October 11, 2014

The best way to travel the Wild Atlantic Way is on a motorcycle #FirstToDoIT #WildAtlanticWay Eh @ATTADoyle @attastowell?


It's been a while since I posted about the Wild Atlantic Way, I haven't been on parts of it since last August and I miss it. I have kept an eye on Twitter posts (I still keep a feed on Tweetdeck for the #WildAtlanticWay hashtag). Fáilte Ireland have reported a great year for Irish tourism in 2014 and I'm sure the Wild Atlantic Way has contributed hugely to this surge in visitors to this country. Media coverage has also been extensive (even I was interviewed about my book on The Pat Kenny Show on Newstalk and by Ryan Tubridy on 2FM during the summer) with lots of radio and TV coverage. Fáilte Ireland also had a lot of events and even sponsored Bikefest in Killarney this year.

Yesterday a tweet by the Google Travel Team (@GoogleTravel), in which they mentioned Chris Doyle (@ATTADoyle) and Shannon Stowell (@attastowell) of The Adventure Trade Association, was a nice reminder of my own ride around the Wild Atlantic Way. Chris and Shannon travelled by motorcycle for 10 days. While I was interested in the sights and stories of each location, they spent a lot of time rock climbing, diving, surfing, canoeing, and getting muddy. They also had one of those helmet camera thingies with which they got nice video shots of our coastline. It's clear they had a camera and support team to help them - I just had myself. Like me they spent 10 days on the 2,500 kilometre trip, and I'm sure they would agree with me that the best way to get around the Wild Atlantic Way is on a motorcycle. It's too long for cycling in one go, and in a car it is a lot harder to get though the many towns and villages (try Castlegregory on market day!). 

Here's a video reminder of the Wild Atlantic Way featuring Chris and Shannon that they made for the recent Adventure Travel World Summit in held in Killarney:

Wednesday, October 08, 2014

Please take my short (5 mins) survey on audience retention in @YouTube learning videos

As part of a research paper on why learners who use YouTube videos for learning often never watch a video until the end (or near the end) I am conducting a short survey on audience retention. The average audience retention for my YouTube channel is 49%, which means that on average only half of each video is watched. What causes what Elliott Masie refers to as "Learning Interruptus" - with the results of the survey, combined with YouTube Analytics, I hope to provide some insight to attempt to answer this question.

The survey is embedded below, but if you encounter any problems using this page, go to http://goo.gl/forms/x2Q5kBpdB8 for a direct link to the survey.

(Many thanks to those who have already completed the survey!).

Tuesday, October 07, 2014

It's Official - Submitting Assignments at the Last Minute Results in Lower Marks!

If you are a student who leaves everything to the last minute and submits essays and assignments just before the submission deadline, you might be losing marks for doing so. According the the Times Higher Education online magazine students’ "last-minute submissions score lower". Citing a study by the Warwick Business School, research found that "marks dropped the closer to the deadline the essays were handed in". Students in the study who submitted work 24 hours before the deadline scored an average of 64%, while those who handed work in with just a minute to go, scored 59% - the difference between a 2:1 and a 2:2! Interestingly, students who submitted work between two and 12 hours before the deadline scored only slightly lower (63%) than those who submitted the day before. Some blame the Colleges and Universities for not doing enough and who "are failing some students…on providing them with study skills to make the most of their undergraduate study".

So - the message is "Get your work done in plenty of time and don't leave it to the last minute!".
Image source: The Velveteen Viking.

In some of my classes I often refer to Creative Problem Solving techniques - specifically those listed in "101 Creative Problem Solving Techniques: The Handbook of New Ideas for Business" by James Higgins (2005). Techniques #36 is "Deadlines". The book tells us (p83) that "many creative individuals claim they work best under pressure". Therefore deadlines would appear to be effective? Not so fast! Other researchers (cited in above book) point out the greatest levels of creativity follow periods of relaxation, not time pressure.  

Monday, October 06, 2014

Book Review: "The Sleepwalkers: How Europe Went to War in 1914" by Christopher Clark

How World War 1 was started has had a simple answer for over 100 years: A Serb kills an Austrian Prince, Austria declares war on Serbia, Russia (Serbia's ally) declares war on Austria, Germany (Austria's ally) declares war on Russia, Britain and France (Russia's ally) declare war on Germany. Four years later, millions are dead.

Image source: The Interpreter.
Christopher Clark has written a fascinating book about the lead up to WW1. Though at times, especially in the middle, it is a heavy read - nevertheless I really enjoyed reading this book (Kindle edition). Right from the start, Clark engages the reader in the politics, both imperialist and nationalist, of the time. Ireland gets a brief mention near the end, but this is not a book about Britain and Ireland's role in the wear. Rather, it concentrates a lot on the alliances - especially between Russia and France, that played a key role in the out-break of war. 

The title of the book is very appropriate - it is astonishing how brinkmanship, nationalism, imperialism, and eejitness combined to cause so many nations to go to war. No nation/empire comes out of this well - my own sense of blame after reading this book is that the Versailles Treaty should simply have been a parade of political and military idiots from all sides to appear in front of a firing squad. 

Saturday, October 04, 2014

Separated Families

Yesterday I met with my Mum's brother Brendan Byrne and his wife Judy who were visiting Dublin for just one day. They live in Toronto Canada and Brendan was back in Ireland for the first time in 16 years. Brendan grew up in Dublin (Temple Cottages), but left Ireland when he was only 7 years old. The Byrne family (my grandparents Paddy and Kathleen, my aunts Patsy (Cathy), Bernie, and Evelyn, and my uncles Brendan and Richard left Ireland in 1958. Raymond and Gertie (Trudy) Byrne emigrated to England. (Sadly Paddy, Kathleen, Patsy, Evelyn, Raymond, and Gertie have now all passed away). This left my Mum Phil as the last member of her family in Ireland - she married my Dad in 1958. So it is a joyous occasion when she can meet with any of her bothers and sisters. We met in Wynn's Hotel in Dublin for lunch, a chat, a pint, and some selfies!



I have been posting some photos on Facebook and am told by my cousin Lauralea that Wynn's Hotel is where my Grandfather Paddy Byrne proposed to my Grandmother Kathleen Cullen- probably in 1931 or 1932. A nice coincidence on a lovely family day.

Monday, September 29, 2014

The Technology in the Classroom Dilemma

A couple of years ago I decided to no longer ask students to turn off laptops or to put down screens in computer labs. I also don't insist on mobile phones and tablets being switched off - only that they be put on silent. My attitude nowadays is that the computer is a learning tool that can add value to a class for a student. I have no objection to a student looking up a term or word that they don't understand, or downloading the course notes and adding extra notes to them. I do appreciate that this policy can and is abused - who can resist checking Facebook for a few minutes in the middle of a boring lecture?

Image Source: BigThink.com
There is evidence that students can easily be distracted by the screens of others - I see this all the time in my own classes. Today I read a short article "What is a more effective way of taking notes - laptop or notepad?" which cites a study where students taking notes by hand performed better than those who used laptops to take notes. Professor Clay Shirky of New York University recently decided to ban technology in the class (read about this here) mostly due to the "rising level of distraction" and that "multi-tasking is bad for the quality of cognitive work, and is especially punishing of the kind of cognitive work we ask of college students". Interestingly Shirky writes that anyone "distracted in class doesn't just lose out on the content of the discussion but creates a sense of permission that opting out is OK, and, worse, a haze of second-hand distraction for their peers" - I agree. Students can make up their own minds what they do with their own time, but they should be conscious that they might be distracting others.

For now I will continue to allow students to use technology in the classroom, with the proviso that they do so without distracting others. I do not want students spending time on Facebook or Twitter, or checking email, or watching cuddly cat videos - I am trusting them not to do so.

Sunday, September 28, 2014

My Great Grand Aunt Julia O'Loughlin

Just eight months before I was born my great-grandfather Joseph O'Loughlin's sister Julia died. She was 97 years old and was born in 1862. Strange to think that my life almost overlapped with someone born 152 years ago. Aunt Julia married a man called Cornelius Walsh, but they had no family. She lived in a place called Renasup on the Cork-Kerry border until about 4/5 years prior to her death when she moved to Tureenclassagh to the home of her nephew Timothy B. Murphy. The photo below was taken in the 1950s at Tureenclassagh, Knockragree, Co Cork.

Tuesday, September 23, 2014

Can YouTube work better for Higher Education? @YouTube #HigherEd #WallOfLearning

Recently I read an interesting article by David Raths for Campus Technology on-line magazine "When YouTube Isn't Enough To Manage Your Campus Video Content". In the article Raths writes about two groups of New York State higher education institutions that have "outgrown YouTube" and that they "desperately need a video platform that can scale to large numbers of people across many locations; stream to many types of devices; allow faculty to create and manage their own video libraries; and share content across multiple schools". The use a combination of cloud computing and platforms like Ensemble. This got me thinking - could YouTube do a better job?

Image source: Tube Geeks.
YouTube is, as we know, great for short videos that anybody can produce with even the most basic software and hardware. It's value as an educational tool in unquestioned in my view - learners of all ages quite often go straight to YouTube to find out how to do stuff. My personal experience with YouTube tells me that students want it, educators need it, YouTube itself wants to be in this space. Many educators like me add content to YouTube to help their own students, and of course refer to the vast library of content that is available on YouTube. My sense is, however, that YouTube is not quite at the races (yet).

If you go to YouTube EDU Channels now there are only three (high level) channels listed: Primary & Secondary Education, University, and Life-long Learning. Even in the Life-Long Learning section there are only a few channels featured - this used to be over 100, and included my channel as well as other channels with varied content from learning languages to learning how to play the drums. I'm sure these are all located somewhere else, but I can't find them (except by searching). A few years ago it was clear that YouTube wanted to push into more education activities - this is still happening, but for me there is something missing. While the University section in YouTube EDU is quite good, my sense is that it is difficult to organise educational videos that have value into a structure that works for everyone. I could be wrong, but instead of expanding, YouTube have contracted. The videos are still there - they seem harder to find.

There is an opportunity for YouTube to create what I call a "Wall of Learning". Picture a wall made out of bricks, with each brick being a category or subject. This would be a very big wall. The "Wall" is big enough to cover all learning activities - no matter what they are. Content developers could post learning materials to each "brick" where it can be shared and rated. Where there are blank "bricks", ie no content yet - content developers can take a look and decide "I'll create a video for that". Even if there are multiple content developers for popular subjects, learners can choose which one to watch by number of views and ratings. It might take years, but eventually there could be a full Wall of Learning with YouTube the choice of location for all learners to find the content they need. Are you listening YouTube/Google?

Friday, September 19, 2014

The 6,000,000 Views Learning Channel @YouTube

Sometime this week, probably on Wednesday, my YouTube Channel - Learn with Dr Eugene O'Loughlin, passed the six million views mark (YouTube can take up to 2 days to report figures). As before - I am both humbled and gratified that so many people are taking the time to view my videos. Since I reported on the 18th April last that the channel had hit the five million views mark, I had expected that the six million mark would be hit before the end of September. In the chart below you can see the pattern of views since I set up the channel on 5th November 2007:


It's interesting to note that the estimated watch minutes total 28 years and 170 days since 1st September 2012 (estimates not available before this) - that over half my lifetime! The channel is undergoing its usual increase in September following a drop in views over the summer. Curiously this year for the first time the rate of growth is lagging behind the previous year. Nevertheless, if trends continue I expect the 7,000,000 mark to be hit sometime in mid January 1015.

My heartfelt thanks go out to all my viewers for both viewing my videos, as well as sharing and commenting on them. Keep on learning!

Thursday, September 18, 2014

Student's t-Test #statistics

Comparing means/averages between two samples is one on the commonest statistical tests - it is made a little difficult to understand in that there are several ways in which a comparison can be made depending on the type of data. This makes explaining and teaching this topic a little difficult. 

Over the past few days I have being creating and adding some new videos to my YouTube Channel, in preparation for the new semester, as study aids for my students. The two methods for comparing means with Student's t-Test are:
  1. t-Test for Independent (Unpaired) samples
  2. t-Test for Dependent (Paired) samples

For each of these methods there are different formulas, so I have created a video for each method to show how to manually calculate t, and extra videos to show to use Excel's Data Analysis Toolpak to do the same. These videos are:

Dependent (Paired) Samples:

Independent (Unpaired) Samples:

Next up - new videos doing the same using SPSS!

Wednesday, September 17, 2014

Alba gu bràth #indyref #Scotland

Whatever our dear Scottish friends decide tomorrow, I hope they know that the Irish people are behind our neighbours whatever decision the people of Scotland make tomorrow. This is the most momentous vote in these islands since the 1922 election in Ireland which saw approval for the Anglo-Irish Treaty that saw the creation of the Irish Free State. I do hope that Ireland will be the first country to recognise Scotland as a new country!

Image source: Wikipedia.

Tuesday, September 16, 2014

How To... Calculate Student's t Statistic for Dependent (Paired) Samples using Data Analysis Toolpak in Excel 2010

Last week I published a new statistics video on YouTube on How To... Calculate Student's t Statistic for Dependent (Paired) Samples - the method showed how to do the calculation manually step-by-step. There is of course an easier way to do this - use the Data Analysis Toolpak add-in that comes with Excel. The video below shows how to do this. I used the same data as for the manual method and the result is the same regardless of which method you use.

Monday, September 15, 2014

10 Things Every College Lecturer Hates! (via @lisawade)

The new academic year starts today in the National College of Ireland - new and continuing students are getting lots of advice about everything. Here's some more advice from Dr Lisa Wade, via Business Insider, who writes about the 10 Things Every College Professor Hates. She checked with colleagues about their pet peeves and here is the list of "Don'ts" that she and her colleagues came up with:

Image source: Above The Law.
  1. Don’t use unprofessional correspondence
  2. Don’t ask the professor if you “missed anything important” during an absence
  3. Don’t pack up your things as the class is ending
  4. Don’t ask a question about the readings or assignments until checking the syllabus first
  5. Don’t get mad if you receive critical feedback
  6. Don’t grade grub.
  7. Don’t futz with paper formatting
  8. Don’t pad your introductions and conclusions with fluff
  9. Don’t misrepresent facts as opinions and opinions as facts
  10. Don’t be too cool for school

Check the article for more detail on each, but I particularly liked #2 and #10 from the list. I too get the "did I miss anything important" question, and wonder which parts of my classes are not important. I also get annoyed when students think that downloading the notes from Moodle is a good substitute for class. Most of my notes for each class can be read in a few minutes - yet I might spend over an hour talking about a short section. As for #10 - I get it, students are bored in my classes. I teach Business Analysis, Statistics, and Project Management  - not the most exciting subjects in the world, but we still have to get through them. I also get it that I am an old man compared to young students - at 54 years of age I am about 35 years older than most undergrads. Don't make the mistake that because I am "old" that I'm also stupid!

Friday, September 12, 2014

How To... Calculate Student's t Statistic for Dependent (Paired) Samples in Excel 2010

In preparing a new set of notes and resources for the Business Data Analysis module (Statistics) on two upcoming undergraduate and one postgraduate course I am creating a new set of videos to support student learning. One of the statistical methods covered is Student's t-test. Learners can sometimes find it awkward as there are two types of t-Test with differing names. We have the t Statistic for Dependent (Paired) Samples, and the t Statistic for Independent (Unpaired) Samples.

In the video below I use scores from a pre and post test to test the difference between the means (Salkind, 2014). My Null and Alternate Hypotheses are:

        H0: µpost-test =  µpre-test
                 H1post-test >  pre-test
                 
The difference between the student's scores on the pre-test and on the post-test is the focus. Participants are being tested mor than once. There are two groups of scores. Therefore the appropriate test statistic is t-Test for dependent (paired) means (Salkind, 2014).



Salkind, N. (2014), Statistics for People Who (Think They) Hate Statistics (5th Edition). SAGE Publications,

Wednesday, September 10, 2014

Bicycle Punctures #fedup

This morning I got my third puncture in a week (one last Friday, one yesterday, and one today), and I am getting fed up. In the past two weeks I have purchased four new tubes and I'll be using the last one to repair today's puncture. I need a cheaper source of tubes and will be checking out Halfords this weekend.

I had this problem before! Back 1990, I had been working in CBT Systems in Mount Street and used to cycle from Rathfarnham to work on most days. I spent a lot of time repairing punctures in the cold - there were all caused by glass. I have always been facinated by the "Is this a record?" letters to the Editor of The Irish Times and decided to have a go myself. Much to my surprise the letter was accepted and published!

I kept a cut-out of the letter which was published by the Irish Times on 10th March 1990.





Tuesday, September 09, 2014

Wait Eight Seconds for Questions via @emasie

Several years ago I read in Elliott Masie's Learning TRENDS about a tip he was given to wait at least 8 seconds when you ask "Are there any questions?" when giving a presentation - especially in a learning environment.

Image source: 8 seconds.
Today, Elliott reminds us of this advice in his latest Learning TRENDS post "841 - Brain Science, 8 Seconds for Questions, Love Letters". I often mention this to my students - partly as advice to them, but also to explain why I sometimes actually wait that long when I ask "Are there any questions?", or sometime the better option "What are your questions?".

To quote directly from Elliott's post: 

Recently, I was interviewed by a magazine and asked about the best tip I ever received about learning. I recounted a tip from Dr. Roger Johnson from U of Minnesota back in 1977 when he said, “Wait at least 8 seconds after asking for questions from a group of learners - before you say anything else as an instructor!” Turns out, the average instructor asks, “Are there any questions?” and only waits about 3 seconds. It takes the audience a few more seconds to process your request, formulate questions in their minds, scan the room for other people’s responses and decide to actually ask. Count to 8 and you will see an amazing difference.

This advice still holds today. I've often noticed an initial reluctance to ask questions in a class - especially with younger students. If someone does - often what happens is that more questions come along once the ice is broken. Denying learners the opportunity to ask questions diminishes the learning experience. 

One of the best questions I was ever asked by a student was "What was that all about?" when I gave a short presentation on Six Sigma to Business Analysis students. I initially was taken aback by this, but quickly realised I had not done a good job of explaining this concept - so I took the opportunity to go back over it again and with the student's input hopefully did a better job the second time. Imagine if I had not offered (and given the time) the opportunity to ask questions? At least one student would have left the class not understanding a word I said.

So - give students time to think about what they want to ask.

Monday, September 08, 2014

New Book Project: "Exploring Northern Ireland’s Causeway and Coastal Routes: A Motorcycle Odyssey"

This evening I finally (and modestly!) decided that my trip in the summer around the Northern Ireland coastline should be written up in a new book. Unlike the Exploring Ireland's Wild Atlantic Way book, which was published by the Liffey Press, I am going to self-publish this book through Amazon's CreateSpace as an eBook. It will be possible to buy print copies, but an eBook will be the primary source of delivery. I feel that putting this message on my website will encourage me to get writing - it is now nearly eight weeks since I finished the trip. I think it will be a lot shorter than the WAW book (215 pages) - I'm aiming for about 175 pages with lots of photos, and to have it complete by early next year.



Sunday, September 07, 2014

Slide Show for my Mum's 80th Birthday

During my Mum's birthday party last week I had a slide show running on our kitchen TV showing photos of her since she was a small girl. Like a lot of people born and raised before the digital age, there are not that many photographs of her - I probably have copies of most of them. I had good fun putting it together and it got a great reaction from relatives and friends who were at the party. Here it is as a slideshow on YouTube - there are 15 second delays on each slide.

Friday, September 05, 2014

Shocking Motorcycle Death Video #ThinkBike #SlowDown #DavidHolmes

The Irish Independent reports in an article "Video footage from helmet camera released by mother after son's fatal 97mph crash" about the death of biker David Holmes and his family's very brave decision to release the video of the crash that killed him. Judge for yourself what you think, he was riding at 97 mph (156 kph) and a car cut across his path.

Even though I have three headlamps on all the time, my bike is very big, I wear a high-viz jacket, and I do not speed like David Holmes - I am never confident at a junction that a driver can see me. I've had too many close ones to be anywhere near 100% confident. 

WARNING - GRAPHIC CONTENT OF MOTORCYCLE CRASH

Wednesday, September 03, 2014

New Video: "How To... Calculate a z-Score in Excel 2010 "

The One-Sample Z-Test is one of the commonest and easiest of statistical test - it is mostly use to determine the accuracy of a sample when compared to a population (by comparing the means of each). The formula that is used is as follows:

Z = ( - µ)/(σ√N)

where...

    x̄ is the mean of the sample
    µ is the mean of the population
    σ is the standard deviation of the population
    N is the number of measures in sample

If the population standard deviation (σ) is unknown, the sample standard deviation (s) can be used instead. Below in my latest video I outline how to do this test in Excel.


Sunday, August 31, 2014

Sunday in Dublin

A last blast of summer today when the blue sky and the sun came out - Dublin was basking in sunshine. After the hectic day yesterday with my Mum's birthday party, we celebrated Roma's birthday today with a nice lunch at Chez Max beside Dublin Castle. Afterwards we wandered around the city centre - Grafton Street had some great buskers and entertainers out. We finished up in St Stephen's Green where there was a display by the Irish Archaeological Society. I couldn't resist taking up an replica medieval axe and getting Roma to take a photo, in honour of Pink Floyd and the name of this web site. And yes, I was careful with that axe! I also picked up a painting of one of my heroes, Antarctic explorer Tom Crean, from a street seller in Grafton St (the painting is on the bench behind me in the photo below).


Saturday, August 30, 2014

I love my Mum and I don't care who knows #birthday #80

Today we celebrated my Mum's 80th birthday in our house in Blackrock - it was a wonderful day that only families can experience. Thanks to all the Byrne and O'Loughlin families who helped to make this a special day for Mum!


Thursday, August 28, 2014

You Can Never get fed-up of Football! #GAA #Kerry #Mayo #Wicklow? #CrokePark

A belated post about last weekend's terrific All-Ireland football semi-final in Croke Park between Mayo and Kerry which finished 1-16 apiece. A feast of exciting football, with the result in doubt right up to the end, was served up by super players from both sides.

I can't get enough of football! Croke Park is our biggest stadium and is Dublin's version of Wembley, the Nou Camp, and the Bernabeu. A huge crowd of over 52,000 last Sunday stills looks bare. What I like about the GAA and Croke Park is that fans of different counties can mix together - no segregation like they have in soccer. We had two very enthusiastic young boys from Kerry behind us who shouted non-stop throughout the game for their heroes - annoying, but fantastic all the same.

Even though Wicklow were not playing, I decided that the GAA is for all counties and I wore my own Co Wicklow jersey, me being from neither Kerry or Mayo. Of course I am married to the lovely Roma from Castlebar, so as you can see in the photo she is appropriately dressed for the occasion. One Mayo supporter said it was "bullshit" that I was wearing a Wicklow jersey - but I think it adds to the colour of the occasion.

The game was won and lost several times by both teams and I was really impressed by both, especially in the second half. Great scores and excitement all the way to the end. I'd love to go to the replay, but it is on in Limerick - like most other people I feel that this was a big mistake. The GAA want to keep Coke Park available in case there is a draw in next Sunday's match between Donegal and Dublin. This match might end in a draw if the Dubs play with one hand tied behind their backs!

Here are some highlights (from RTÉ) of the match:


Wednesday, August 27, 2014

Happy 80th Birthday to my Mum


My mum Phil (Byrne) O'Loughlin was born on 27th August, 1934 and reaches the milestone of 80 years young today. Happy Birthday Mum! Lots of love from Eugene.

Some facts for anyone born on this day 80 years ago from BirthdayScan.com:

If you were born on 27th August 1934., your age is Eigthy years and One days. 29,221 days passed since day of Your birth (or 4174.4 weeks). But you are not alone with this! In world 276,000 babies was born on that day.

You were born on Monday, and your zodiac sign is Virgo.

The "big bum" was on ≈4th December 1933. (if you were born on time), but for details, ask your parents, they may have some interesting story for that day ;-)

If your hair were never cut since b-day, today, it would be 10.23 meters long.

Heart beats since your birth: 2,945,500,000.


Tuesday, August 26, 2014

Pouring Water Over my Head - Why? #IceBucketChallenge #ALS #MND

This evening I joined my daughter Vicki in the Ice Bucket Challenge. We emptied our ice box into separate buckets and did the deed, not once - but twice! Our camera-lady didn't have record switched on, so there was no alternative but to do it again as no one would believe that we did it without the video evidence. So here is...



According to David Sable writing this week in an article on Linkedin "Lessons from the Ice Bucket Challenge", Facebook has tallied more than 2.4 million unique videos of Ice Bucket Challenges have been uploaded. And 28 million people have posted, commented or liked these videos. He feels that not everyone has donated, but so far the American ALS Association has received "$41.8 million in donations in just about a month" - this is more than double the whole of 2013, so what made this work?

What Sable refers to as "Click and Shout" is about "using social media to raise awareness, but then making sure that what’s social is tied to an action in the real world". A campaign like this engages people way better that any other Marketing campaign - the "entertainment" is proof that a great idea like this, plus a good cause, "engages people". Sable also writes that there is "no substitute for the pure emotion that helps to motivate behavior" and that we should all "post, like, share videos" and to "Shiver a little bit".

I wonder what the next on-line craze will be?

PS - apologies to Facebook friends for double post.

Monday, August 18, 2014

Senseless Damage #WelcomeToBelfast

During a recent visit to Belfast my car was "keyed" along both driver-side doors, the front wing panel, and the bonnet. Today I am having this damage repaired at a cost of several hundred euro - I have to get this done because the damage is so deep that rust will be inevitable. I also photographed this damage before repair to show when I sell this car that it was "key" damage rather than crash damage. No matter how good the paint job it gets today I'm sure an expert will spot the colour difference. This senseless damage will cost me today, and potentially on the trade-in value in years to come.


I mean no slight on Belfast as this could have happened in any city in the world - but why did someone do this?

Could it be that a Southern registered attracted made someone angry enough to key it? 

Was it part of some gang initiation right-of-passage? 

Or was it a simple random act of vandalism? 

I wonder what's inside the mind of the person who did this? Often when I see senseless acts of vandalism like graffiti or a smashed-up bus shelter I wonder what the perpetrator would think of this when they are older? For example - how does a 60 year old man today feel about keying a car 40 years ago, or what does he think if someone else does the same type of damage to his own car. I am as angry as anybody would be right now because this senseless damage is costing me a lot of money and some inconvenience. I'm also angry that nothing will be done about this (I did not report it to the Police - what's the point?), and that the bastard who did this got away with it. I can only hope (very un-Christian of me) that some day that he/she will have similar damage inflicted upon their own car. Only then will they know how their victims feel.

Thursday, August 14, 2014

Why don't learners complete the job?

Elliott Masie writes in yesterday's Learning Trends about learners not finishing or continuing learning - he writes: "Learners start videos, begin eLearning modules, enroll in multi-segment MOOCs - and they don't continue or complete them". Today's technology allows us to pause, stop, and rewind on-line content - and much of the time we do not complete. Masie calls this "Learning Interruptus".

Even my most popular video on YouTube "How To...Create a Basic Gantt Chart in Excel 2010" (730,757 lifetime views) has only a 69% audience retention rate (av­er­age per­cent­age of a video your audi­ence watches per view) - this means not everybody is watching to the end. Below is a Google Analytics chart showing that the average retention rate for all my videos is just 49% (figures only available from Sept 1st 2012):


Recognise any of the following?

  • The phone rings, we stop what we are doing and answer it
  • Same for text message or other alerts
  • You get an email alert - again you stop what you were doing to see who it is (I've turned mine off)
  • You check Facebook/Twitter/Google+ in the middle of a task
  • Somebody knocks on your office door - you let them in

If you are watching an instructional video or an online seminar - you can always pause and come back - but do you come back?

Elliott Masie has some good suggestions to help overcome this such as setting markers where a learner has left off, or creating a reminder list to continue. I see students in class all the time checking material online, or checking their (silent) phones. If they were paying attention in my lecture they have just interrupted this learning. I think this is just something we all have got to live with. Only a few short years ago I insisted on screens being turned away in class and no mobile phones allowed - now I don't. For learners, handling these interruptions will be a challenge - any technology (as Masie suggests) would be great to help and encourage us all to complete our learning.

Wednesday, August 13, 2014

2014 IDG Enterprise Big Data Research Summary #HDSDA #Analytics

A recent IDG Enterprise report on "Big Data" highlights somes of the growing trends and emerging opportunities for Data Scientists. In the report the results of a survey show that 34% of companies were "Hiring staff with analytics skills", while 40% report that the big challenges faced are the lack of skilled employees to both analyse and manage Big Data. Also, 24% of companies said that they plan to hire more people in roles such as Data Analyst and Data Architect in the next 12-18 months (see summary slides below).

This is good news for students studying Data Analytics at the National College of Ireland where we have nearly 200 students studying analytics. Recent Springboard and ICT Skills conversion courses have been highly successful, with the next one starting in September already booked out. Almost all of our students who finished last year are in employment either in full-time positions or internships. There is a real demand for people with data analysis skills - long may this (and full classrooms at NCI!) continue.


Friday, August 08, 2014

Book Review: "The Riddle of the Sands" by Erskine Childers

More holiday reading when I picked up a copy of the "Riddle of the Sands" that had been in the house for some time. It was first published in 1903 during a period before World War I when there was what Nigel Jones in his book "Peace and War: Britain in 1914" called "invasion literature", a lot of books published on the topic of potential invasion of Britain by Germany.

Image Source: Amazon.
This book from the early 1900s is one of the few spy novels still read today. It is a "stuffy" read and it also helps if you know a bit about yachting to understand all the boat stuff in the book. It is slow moving at times - even boring. It takes a long time for the action to start. Carruthers and Davies are two English yachtsmen who, based on the thinnest of evidence, think that the Germans are planning surprise invasion of Britain from the sands that make up the north west coast of Germany. Before you know it, the book is finished and nothing really happens (except a lot of sailing).

Books like this were designed to warn the British people of the danger posed by Germany. Childers worked in the House of Commons as a clerk and was keen to play his part in getting the Government to spend more on the defence of Britain.

Coincidentally, I started to read this book on the 26th July - exactly 100 years after Childers landed in Howth with a cargo of arms on board the Asgard. He was on the wrong side of the Irish Civil War and a vengeful government had him executed on 24th November 1922 for possession of a pistol. A tragic person.

Thursday, August 07, 2014

Book Review: "The Long Shadow: The Great War and the Twentieth Century" by David Reynolds

With the recent 100th anniversary of the outbreak of the World War I there are many new books about the war. This new book by David Reynolds has an interesting angle on the effects of the war right through the 20th century. It is a long book (544 pages) and I bought the Kindle edition for a bargain £6.64. 

Image Source: Amazon.
The book covers many themes from "Empire", to "Capitalism", and to "Remembrance". It is easy to read - not too academic. For Irish readers there are interesting aspects of the effects of the Home Rule Bill in 1914, and the consequences of the 1916 Easter Rising's shadow reaching the Troubles in Northern Ireland via the 50th anniversary commemorations of the Rising in 1966. The book is dominated (for me) by the British experience - there is even a whole chapter devoted to the "Tommies". However, other conflicts in the Middle East and of course World War II are discussed. Reynolds very cleverly links events in a way that the reader may not have ever connected them.

Though the book is very long, I'd certainly recommend it for its different angle on the war.

Monday, August 04, 2014

Exploring Northern Ireland's Causeway and Mourne Coastal Routes - Strangford to Newry (100 kms)

The final section of my tour of Northern Ireland took me around the Mourne Mountains in Co Down. Though not as specular as the Co Antrim coast, I certainly enjoyed this road in the early evening sunshine. I think that it would be even better if done on the morning when the sun shines from the east.




At first the road runs along the edge of Strangfrod Lough and I can see back towards the Ards Peninsula where I had been a few hours earlier. Just as the road turns inland for the village of Ardglass I came across the very fine Kilclief Castle which dates from 1413. It is open to the public in the afternoons only and it was closed for the evening and I could not get inside. Nevertheless, a nice surprise as this is the earliest surviving tower house in Ulster. There is a good poster sign showing how the inside might have looked when it was inhabited.



I motored on to Ardglass, a village which contains four medieval tower-houses - more than any other town in Ireland. The best known of these is Jordan's Castle (photo to right) - the other three are  Ardglass Castle, Cowd Castle, and Margaret's Castle .

Close by there is Coney Island (which is not really an island) - a namesake of the more famous version in America, and of course another one in Co Sligo on the Wild Atlantic Way.Further on the road is the village of Killough, which is similar to Ardglass in that it is situated on a circular bay. There are lots of lovely sycamore trees lining the main street here. Accoridng to Wikipedia "Killough is in the running for a nomination in the competition for Ireland's first Amish Village, helped in no small way by the absence of an Off-License, a Chinese Takeaway, a Bookmakers and indeed any form of craic at all"!

Following Killough, I was getting closer to the Mourne Mountains - there were in the misty distance at the time (and hard to photograph). I passed the quiet villages of Clough and Dundrum before reaching the much busier town of Newcastle which has the beginning of the mountains as a gorgeous backdrop - you would think you were in the Alps here! It is a popular seaside resort and starting point for tourists checking out where the mountains of Mourne sweep down to the sea.


In the village of Annalong I stopped to take a photo of an archway across the road featuring King William III on his white horse - it also bore the legend MY HELP COMETH FROM THE LORD (Psalm 121:2). Like many towns and villages across Northern Ireland there was lots of colourful flags and bunting out to celebrate the 12th July.

In Kilkeel, I paid a quick visit down to the harbour - this is the main fishing port in Co Down, with one of the largest fleets in Ireland taking shelter here. Interestingly, the river Aughrim runs though this town of winding streets. I motored inland from here to the village of Rostrevor. By now the sun was almost setting and I got a great view of the sea and hills around this village and Carlingford Lough. MAny well known people lived in Rostrevor, including Dana, Mary McAleese, and T. K. Whitaker (the economist and a pivotal figure in the development of the Republic of Ireland). 


I was now against the clock before dark set in. At Warrenpoint I had time to stop at the Narrow Water Castle. A sign at the castle tells us that it was built by John Sancky in the 1560s, and that it cost £361.4s.2d. For me the Mourne Coastla Route ends here as it is a dual carriageway all the way to Newry from here with little of interest to see or do between Warrenpoint and Newry. IN Newry I filled up with petrol and headed home to Dublin.

I had a great time going around the Northern Ireland coast. Being short, it took just three days and is a lot quicker than my 10-day trip around the Wild Atlantic Way. It is well worth doing this trip on the bike - especially the north and eastern coasts of Antrim.

This also marks the end of my tour of Ireland - I have now been all around the entire coast. I have seen lots of sights I never saw before, and have been to many places I had never been to before. We have a wonderful island and we don;t know it!.

"Exploring Northern Ireland's Causeway and Mourne Coastal Routes" - I wonder is there a book in this? 

Sunday, August 03, 2014

Exploring Northern Ireland's Causeway and Mourne Coastal Routes - Bangor to Strangford (131 kms)

Leaving the busy centre of Bangor I continued on around the North Down coast via Donaghadee where there is also a fine harbour with a lighthouse at the end of its pier. This part of the Mourne Coastal Route travels down the east side of the Ards Peninsula and back around Stangford Lough to the village of Strangford. There is of course a ferry from Strangford to Portaferry, but I decided to go around the Lough (which takes about 50 mins) rather than take the short cut.

The road on the eastern side of the Ards Peninsula runs mostly on the coast - on clear days you can see the most south-western parts of Scotland, and the Isle of Man. I motored on through the villages of Millisle, Ballywalter, Ballyhalbert, and to finally to Portavogie. Here I stopped briefly at the harbour which is best know for its fishing fleet. I felt sorry for the fishermen who harvested the battered prawns I ate last evening in Carrigfergus. There is a fine monument "In Memory of the Fishermen who were lost at sea" at the harbour - there are 27 names recorded, sadly with room for more to be added. At this point I am at the most eastern part of the island of Ireland!

Not far past Portavogie is is the village of Cloughey where Kirkistown Castle which was built in 1622. Though open to the public, it was closed when I was there and I rode around to a nearby estate to get a better photograph. The castle gives its name to a local golf club, and of course to the famous Kirkistown Motor Racing Circuit.

The southern tip (Ballyquinten Point) of the Ards Peninsula is not accessible by road, but you can get pretty close at Barr Hall. I had visited this area many times while a student at Trinity on Marine Biology Field Trips to Portaferry. Coming into Portaferry I first stopped at the local church to visit the grave of my Aunt Breda who was also my Godmother, and then met with my Uncle Seámus and Cousin James. Somehow I managed to forget to take a photo of the three of us. 

Overlooking Portaferry is a ruin of an old windmill, built in 1771 but destroyed by fire on Christmas Day in 1878. At one time there were no less than 82 windmills stretching the length of the Ards Peninsula. Indeed it must have looked much as the Netherlands does today, and it was undoubtedly this feature of the Peninsula which gave rise to the acronym “Little Holland” (WonderfulIreland.ie). There are fantastic views of Portaferyy, up Strangford Lough, and across to the Mourne Mountains from the Portaferry Windmill.


It was back heading northwards again leaving Portaferry to tour around the inside of Strangford Lough. At Kircubbin I stopped for petrol and spent a long time chatting to a fellow Harley rider about bikes and touring. At the top of Strangford Lough is the town of Newtownards (where I was arrested, but not charged, in 1982!). Overlooking the town is Scrabo Tower which is visible from most of north Down. It was built in 1857 as a memorial to Charles Stewart, 3rd Marquess of Londonderry who was one of the Duke of Wellington's generals during the Napoleonic Wars. 

I stopped next at Ballydorn where a lightship, called the "Petrel",  has been used since 1968 by the Down Cruing Club. Close by is where there are wonderful ruins of Sketrick Castle, which dates back to the 15th century, but which was destroyed in a storm at the end of the 19th century. Right beside the ruins is the wonderfully named "Daft Eddy's Restaurant"!

In the town of Killyeagh I stopped outside the castle. I would have liked to have toured the grounds and get a closer look, but the castle is private, and is believed to be one of the oldest inhabited castles in Ireland. Parts of the castle date back to 1180, though the walls were built in 1625. Oliver Cromwell was a visitor here in 1649, though I am sure he was not welcomed with open arms when his forces blew up the gatehouse and attacked the castle!

Downpatrick is the county town of Down, and also the reputed location of where St Patrick is buried. It leads to the final part of this section of my tour to the village of Strangford. Along the way I stopped at the magnificent 18th century Castleward. One interesting thing about this grand house is that one side is designed in Classical Palladian style (as in my photo), while the other side of the house is designed in Georgian Gothic style. Apparently Lord Bangor and his wife could not agree on which style to use, and each got their own way!

Tomorrow - the final part of my Causeway and Mourne Coastal trip.