This article covers some of the issues involved when using a Digital Signature. Each Digital Signature is generated from a Digital Certificate (otherwise known as a Digital ID) issued by a certifying authority.
All examples given are created using Microsoft Outlook 2010 on a PC using Microsoft Windows 10, but the principles apply to other versions of Outlook and other email clients.
If you didn’t already know it the 1st January next year will always be on a different day to the 1st January this year. This comes about because:
for ordinary years with 365 days there are 52 weeks and 1 day remaining,
for leap years with 366 days there are 52 weeks and 2 days remaining.
This means that:
if the 1st January is on a Monday in an ordinary year then so is the 31st December. So the next year must have the 1st January on a Tuesday,
if the 1st January is on a Monday in a leap year then the 31st December is on a Tuesday. So the next year must have the 1st January on a Wednesday.
If there had been 364 days in every year the 1st January would always be on the same day of the week.
As a consequence of all this movement around the week, by the 1st January, next years calendar is always different to this years. That leads to the question: “There’s only seven days in a week so how many different ones do we need? Just seven.” Well the answer is, “No, you need another seven as well, for all the leap years. They too can start on any day of the week.”
In the northern hemisphere solar panel orientation is seen by some as unsuitable because they mainly lie on a north-south axis. This enables them to generate the most electricity when the sun is at its zenith (highest in the sky) and is shining straight down (or as near to perpendicular as possible) on the surface of tilted panels.
This orientation allows panels to generate the greatest possible amount of electricity during the middle of the day. However this is not the best time of day to generate. This is because there are problems connecting intermittent sources of electricity, such as solar panels, to the grid.
Apparently, midday electricity isn’t required so much as afternoon electricity. (I’m not sure what is required in the morning.)
More Info on Northern Hemisphere Solar Panel Orientation
Find out more detail about northern hemisphere solar panels pointing the wrong way in this article from The Telegraph.
Due to excessive counterfeiting of the existing one pound coin The Royal Mint has decided to introduce a new one pound coin design, in 2017, with new security features:
“It will be constructed from two different coloured metals and contain an iSIS security feature – a revolutionary new high security coinage currency system developed by The Royal Mint.”
“iSIS – Integrated Secure Identification Systems – enables not just coins, but the whole cash cycle to be more secure, protecting the public, vending machine operators, retailers, and the wider banking system. …”
“There are many customer benefits to iSIS:
Both robust and secure, its issuance protects the reputation of a country, projecting a positive image of the nation and its economy.
It will reduce costs by replacing expensive clad and homogeneous coins with a more affordable full-plated option.
It will generate lifetime cost savings through unmatched durability, lasting up to 30 times longer than an equivalent value banknote.
iSIS is not a surface coating so it will not wear off over time.”
The edge of the new One Pound coin looks like this:
Yes the new One Pound coin has arrived and here it is:
Note: Below the Queen’s head is a shield with an embossed £ sign. This wasn’t on the original design.
They were put into circulation on 28th March 2017. Old £1 coins will no longer be legal tender from midnight on 15th October 2017. However after that date they can be deposited into a bank account. That will enable people to recover the value of any horded coins found.
There is still a problem with vending machines, in particular those ticket machines in car parks, which have not yet been modified to take the new coins. Old £1 coins are already in short supply making the use of such car parks difficult, especially at the seaside now the holiday season is in full swing.
Well, well, well, whose not keeping on top of things then. It looks like all the major banks. This article from ITPRO taken from Reuters points out that some major banks will not have updated their Automatic Telling Machines to Windows 7 by 8th April 2014. This is Microsoft’s published deadline after which there will be no support for the old system. Apparently 95% of the worlds 2.2 million ATMs were using Windows XP and 2/3 of them will still be using it after the MS deadline. So the banks involved will be paying some large sums of money to MS to keep their systems updated beyond the deadline.
This tells me that these banks have got all their eggs in one basket. They should diversify and have another company’s system running on alternate machines with similar geographic locations. This should be a requirement of bank regulators.
The Airlander airship gets competition from another airship making its move, the Goodyear Dirigible airship making its move. It’s 246 feet long, 50 feet longer than previous models, and is dirigible (it has a frame and is not just a balloon).
This airship Airlander, the longest aircraft in the world at roughly 91m (300ft), from the US military airship Airlander project, has been brought to Cardington, Bedfordshire, England (home of the R101) for further development by a British company who built it in the first place. In fact the development is taking place in the same hanger used by the R101. Military budget cuts in the US have allowed the Americans to sell it back to the manufacturer – Hybrid Air Vehicles (HAV).