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Local Network Webinars

Tuesday 15th November saw the first 'Webinar' sponsored by the IET Somerset and West Wiltshire Network, “Where Are We ? - A History of Time Measurement & Navigation” presented by Emily Akkermans. While introducing the event Peter Shiret canvassed the opinions of the viewers on webinars in general, here are my thoughts, with the hope that it will encourage others to add their opinions.



 



Local network-sponsored webinars are clearly a sensible substitute for the conventional local event, given the restrictions imposed as a consequence of the spread of Covid-19 but might they become the 'normal' way to conduct events?



 



I believe there are four groups of players involved in holding an IET event, the IET centre, IET local network, the presenter and the audience, each having aspirations that may not completely align. Broadly the centre wishes to promote the profession, the network to build and sustain the network, the presenter to inform and the audience to be informed and entertained. In theory a webinar can meet all of these desires but these aren't the only ones sought by the players.



 



For the centre there might be a temptation to sponsor all webinars. That would certainly take a load off network sponsors but at the expense of diminishing their role and possibly support for topics of a local interest that might be considered too specialist for a national or international audience. For the centre there is also the possibility that the audience becomes yet more acclimatised to getting engineering information online and discovers that there is some excellent material 'out there' and the institution loses its relevance.



 



The network runs the same risk, it only has relevance if its members share some common connection, i.e. the locality, but we are all equally 'local' (or distant) on the internet. The distinction between the centre and the network can easily become blurred.



 



For the presenter they possibly gain by not having to travel, (some might enjoy it). There might be some relief at not having to face an audience, (which might encourage the shy to take on the task), but I am sure most get some pleasure in the sense of connecting personally with the audience. It must be very odd not to receive even a clap at the end. I would think there might be a temptation to move from a webinar format to a (polished) internet lecture that can be viewed on demand. It has been said that radio and television killed off the music hall as a stage performer can present the same act all week at one town and then repeat it at the next. 'Perform once' might be commercial suicide, but then most presenters are not being paid so that is perhaps not so important for a technical talk.



 



For the audience the big plus is perhaps not having to travel, traditionally our events seem to run when it is dark and cold! The webinar has the possibility of providing better on-screen information, no problems of screens too far away, too dark or obscured by someone's head. The downsides include losing that personal connection, the presenter that picks up on an audience reaction, the feel of being part of a larger body. The chance to meet others in the network is gone too. (Personally I have always felt it is a pity that people don't meet up after an event, at least we would all have something in common to talk about. I often feel that some of the ideas brought up in a talk could do with being teased out, perhaps after a bit of self-reflection – I envy those smart enough to compose and ask a relevant question at the right time!).



 



My quick comment, better than nothing, but nothing beats a good live speaker.



 



Any thoughts?



 


  • I think your points are well made James.


    This COVID event has affected us all and I think it is unlikely that things will ever be the same again.  The key will be to pick the best parts of the pre- and post- COVID worlds and come out with something better and stronger than before.


    I wonder whether a hybrid approach might be successful - a physical face to face event allowing for local area socialising and networking - plus a live streaming of the event as a webinar to reach as large an interested audience as possible?.   


    Indeed the presenter's preferences could be allowed for also: travelling if distance permits to be 'in the room' or webcasting into the room for a collective local viewing of the webcast.


    There may be members or interested parties that find it difficult to find the time or to physically travel to a local event and this hybrid approach would be inclusive to all.


    We are the IET with a mission to Inspire, Inform and Influence - one would hope that we could find a way!


     


  • Thank you for joining in Dominic!


    On Tuesday, 12 January the second local webinar, "Light Years Ahead: The 1969 Apollo Guidance Computer" was presented by Robert Wills, replacing the cancelled live event of the same name from early last year.


    Continuing the discussion of webinars in general and the local ones in particular I noted that more people took part in this event than in the previous one, 400 or so against 300, I believe. These are very large numbers compared to the traditional local event, (excluding 'flagship' events when the IET president and the government scientific advisor presented). It does make me wonder how 'local' these webinars were as, in theory, the audience could be world-wide.


    I noticed that this time a lot more use was made of the 'chat' facility, perhaps Peter hadn't issued as many cautions this time? There must be a danger that the presenter/moderators may get overwhelmed by too much 'feedback'. Some people used it to thank the presenter, nice in theory, not so good if there are 400 'chats' to pick up on 'real-time'.


    As in the previous event the preferred 'query' facility was a bit hit-and-miss. Clearly the presenter/moderators were seeing more questions than I ever saw. There was some talk of these questions being captured for later use. Did that mean that individuals might receive private responses later? Questions in a live event usually get answered live and the response no doubt satisfies more than just the original questioner.


    This particular event was, we were told, was being recorded. I wonder when and how it will be made available and will it include any extras like answers and links? One of the reasons that in the past I had set up a discussion topic about live events was to provide a forum for further questions and answers.


    Finally some comments on the latest webinar that piqued my curiosity. Why should using 1's complement numbers be a problem (two ways of indicating zero)? Signed binary and normal decimal notations have the same 'problem' and the 'solution' is just not to use negative zero for input and the computer won't produce it during calculation. I rather suspect that the reaon for using 1's complement is a direct result of using NAND gates as the basic building block. Software engineers might think of 0 and 1 as being of equal 'value' but from a hardware point of view one state might be easier to assert, 'reset' signals invariably appear in the negated form, zero volts. Main Motor Burn and Main Motor Not Burn are logically equivalent but not in hardware terms. Similarly word size for a control computer would be determined more by input/output control word size, not by the need for mathematic precision. That can be achieved by using more than one word as and when required, a large word size increases the size of the processor and memory even when it is not needed. The popular 8-bit microprocessors, such as the 6502, 6800 and Z80, were able to handle floating point numbers if programmed to do so.


    Someone asked about using alternatives to core memory, such as diodes. Core memory was 'high-density' for its day. I built a 96 bit diode memory for a 'home job' and a few years later was working with a 4k x 12 bit core store of pretty much the same size. Talking of 'home jobs' I think the biggest project I made for home use had about 45 ICs, I can't think why anyone in this day and age would want to tackle a 6,000 gate project by themself. There is no guarantee that the extant AGC documentation is correct, (missing change notes?). Personally I would either simulate the circuit, (a lot easier than 24,000 plus wire-wraps) or emulate the software on something like a Raspberry Pi - or just use someone else's simulation! http://svtsim.com/moonjs/agc.html Each to their own - good luck!
  • Hi James


    Sorry for my delayed reply to your welcome comments, which I initially encouraged.  After some thought, in essence I agree with all of what you said especially your last comment "nothing beats a good live speaker"  and more importantly surely an IET  local network is defined by its (live) local events.

    These events  provide a  forum and an opportunity for members to physically meet and network with others within a given geographical area, nurturing that key aspect of human social behaviour, which most of us enjoy, that of talking face to face.  So without live events a local networks will lose the concept of local,  unless ofcourse webinars can restrict the audience to a similar geographical based event. But, I see no future for LN's, and their committees if this becomes the norm, unless of course they prefect virtual reality.


    Webinars have provided a stop gap during the current Covid Pandemic, but presenting without a live audience does not suit all presenters,  most of whom need the feedback of others present.  Whilst I have enjoyed the challenge of arranging a webinar and basking in the increased attendance. I think the way to go, is live recording of events, which will involve a different skill for local networks of recording and editing for YouTube or IETtv
  • Hi Peter,


    Thank you for your comments and thank you and those involved with the local webinars for your efforts in keeping up some sort of local programme.


    I was going to say are we going to be left with 'super stars' like Walter Lewin, ex-MIT but then it is the working of his lecture theatre audience that makes the lectures great. No audiences, no good lectures.


    Really nothing is new. Teleconferencing was never popular, call it Zoom and increase the participants a hundred-fold doesn't make it better!


    I had a friend that I used to bring to 'live events'. A minor irritation was that he would always ask at the end "What is their angle?" Of course when we had a speaker from a company describing some new technology to an extent they are 'selling the company' but to their credit I never felt that was 'the angle', rather their enthusiasm for the subject. If we move to 'professional' presentations, slick video and sound, 'the angle' must become the company, simply to justify the investment. The content will go down too.


    There is nothing new here either. Towards the end of my secondary school days we acquired some TV sets on stands, but they were never used, (except when Wimbledon was on!). The teachers said that was because there was so little breadth in the 'educational' programmes - look at any TV science programme and it is the same expensive graphic over and over again, a good teacher might have filled two slide-up blackboards twice over and added emphasis to clarify a point. Just a bit of chalk!