Same problem here! Squirrels have gnawed through my perimeter wire dozens of times. I have the Husqvarna Automower 450x, which allows for three shortcut home wires.
Repairing the broken wire is easy...finding the break, however, is extremely difficult and time consuming. I've had the mower for 2 years and it's been awesome in every other way. I'm thinking of pulling up my entire perimeter wire and installing a new wire deeper. No doubt this will make finding future breaks more difficult, but I hope that by being deeper, the squirrel problem will go away.
Those squirrels....I found the break by turning the base on and using an AM radio to follow the wire around (it made a kinda tone). When the tone stopped I found the break. The hardest part was finding the radio And getting the batteries... I would assume it would work for the husqvarna perimeter too.
Man look at that little critter fly!! I think the principles for using an AM radio are sound. I found two radios, and used them, but I couldn't quite make sense of what I was hearing. Perhaps there was a ton of localized interference. I stepped up my approach by purchasing an underground wire locator from Amazon. This gizmo sends an amplified steady signal down the perimeter wire and a separate portable device listens for the signal as I walk along the perimeter. This didn't work as easily as I'd hoped. My guess is that due to the existence of one very large perimeter wire and three intersecting shortcut-to-home wires, there's some interference/signal degradation that complicates finding the break, especially since there's normally multiple breaks due to the relatively large population of squirrels. There's got to be an easier way to find a break! I think the conclusion here is that I should just keep a bunch of loaded bird feeders to occupy their time!
Is it possible to make corrosion resistant stainless in the Damascus style...or will the dissimilar materials cause galvanic corrosion or the spaces between the different alloys result in crevice corrosion?
Right, but even raw pure stainless of let's say 304 or 316 will rust in naked form due to the small crevices left on the surface straight from the mill...if multiple dissimilar layers of stainless or folded, it seems to me that stainless Damascus will be very vulnerable to rusting... unless there is something in the chemistry between the individual layers that mitigates this, no?
I don't find the linked document at all convincing. To qualify as 'City Attacks' we would expect that those bombs would have been dropped on the largest population centres available as targets. In fact they were dropped not on the most populous cities, or on the most populous parts of Hiroshima and Nagasaki, but actually they were dropped on the port and navy facilities at Hroshima and the arms manufacturing facilities in Nagasaki. In fact the second bomb was originally intended to be dropped on the arsenal at Kokura and was switched to Nagasaki due to bad weather. yes they are cities, but they were prioritised on military grounds.
For civilians, we generally think and worry about bombs targeting cities, but most nuclear weapons are actually aimed at military targets. The primary targets are the enemy's own nuclear weapons, military assets and infrastructure come second and population centres last of all. The point of nuclear deference isn't that if we have a war mum and dad will be killed, it's that everyone will be killed.
The fact is we have vast amounts of direct testimony from US and Russian military personnel and leaders, both at the time and in subsequent interviews books and testimony, that deterrence was the primary consideration in their defensive and offensive planning.
>The primary targets are the enemy's own nuclear weapons, military assets and infrastructure come second and population centres last of all.
Humbug:
"“The authors developed a plan for the ‘systematic destruction’ of Soviet bloc urban-industrial targets that specifically and explicitly targeted ‘population’ in all cities, including Beijing, Moscow, Leningrad, East Berlin and Warsaw,” Burr pointed out. “Purposefully targeting civilian populations as such directly conflicted with the international norms of the day, which prohibited attacks on people per se (as opposed to military installations with civilians nearby).”
But other contemporary sources make it abundantly clear the Pentagon saw any person tied to a war effort as a viable military target. A now declassified 1952 U.S. Navy film on chemical and biological warfare specifically states a goal “to incapacitate the enemy’s armed forces and that portion of his human population that directly supports them.” With similar thoughts in mind, the U.S. Army had looked into radiological warfare and built deadly dirty bombs."
Of course they are, and “Purposefully targeting civilian populations as such directly conflicted with the international norms of the day" is complete and utter guff. This was immediately after the systematic, thorough going population centre bombing campaigns of WW II. Which planet are these people from?
nevertheless the fact remains that most nuclear weapons are tactical or mid-range and therefore not primarily suitable for population attack. The primary reason Russian tank divisions didn't swoop through Germany in the 1950s wasn't because atom bombs would rain down on Moscow (although they would) it was because atom bombs would rain down on the tank divisions.
Obscure ecommerce platform ABC doesn't have an API with inventory management software XYZ. The ABC customer is considering paying a few thousand bucks for the integration with XYZ. Other ecommerce platforms have an API with XYZ. Should the customer pay for the integration or seriously consider changing ecommerce platforms? What are the critical ongoing performance and maintenance factors to consider?
They should consider switching, but the criteria needs to be outlined and weighted by the actual customer.
It all comes down to migration and maintenance costs and appetite for risk.
The primary question is will I get what I need on budget in the shortest time frame with option ABC or option XYZ?
The secondary questions are:
* If I need to extend the integration in 6 months with this solution what will it cost
and how long will it take and do I have flexibility in who can do the work?
* Can I upgrade to the next major version of ABC or XYZ and reasonably expect that my custom integration will keep working.
The ULA guy in the pre-flight news conference[1] said the rocket is not modified for this flight but they had to do analysis because the payload is not inside the payload fairing.
Two weeks ago, I actually met a city health department employee who focuses on rat populations in NYC. She was doing a survey of businesses along Avenue C (Alphabet City) in reaction to complaints of a swelling rat population on Avenue B. Apparently, Hurricane Sandy had washed significant parts of the rat population from Avenue C to Avenue B...and with the start of the cold season, those rats will be looking for warmer places to hang...perhaps on Avenue B.
You mean the concept of a sparse matrix ? Well, for e.g. if you use FEM (Finite Element method) you usually end up with a huge linear system which has the nice property that more than 90% of his coefficients are zeros. A sparse matrix will store only the non-zero elements, this is a huge gain from the point of view of memory usage.
Similar considerations applies for using Finite Difference methods.
It's really useful for testing FEA algorithms/code. Tim Davis has done a ton of work developing numerical algorithms for sparse systems, his code is used by software like MATLAB and also bespoke supercomputer systems.
