I and a few friends are overloaded with customers and work (and good rates) tuning/optimizing other people's crappy work. I am consistently amazed that customers pay bottom dollar for the initial design and development work, and then up paying more later to make the application/database scalable. It keeps me employed and wealthy though...
I am a licensed pilot, and I am worried about the risk of a midair collision. I would not want to be flying (either private or commercial) in the vicinity of one of these UAVs.
"Local Number Portability" (or LNP) will likely happen. The service providers may just introduce some disincentives to leave (e.g. two-year contract with penalty for early terminiation).
But... what people haven't thought about in the US is the cost of acquiring a new handset if switching between service providers that use different/incompatible technologies (e.g. Verizon with CDMA and T-Mobile with GSM).
I don't see the problem having Linux running on IBM zSeries hardware (aka MVS, S/390, mainframe, etc.). If it works, it works. And I've never seen anything better than IBM's mainframes for parallel I/O activity on huge scales...
Agreed. Like it or not, IBM's IMS hierarchical DB is still in use for many critical databases/systems. I haven't done any IMS work in years but it would be interesting to see if IBM has added some type of "direct" support for XML...
One might consider a "large" database in terms of total disk used for the tables, indexes, and logs. Or it could be total concurrent users logged in to the database. Or it could be total simultaneous users - different than concurrent users since simultaneous users are those actually issuing a SQL statement.
A high number of simultaneous users will require more processor/CPU capacity. A high number of concurrent users (with a low number of simultaneous users) might not require much processor capacity but will likely require more memory capacity due to the number of concurrent connections (and each connection having some amount of it's own memory).
Of course the other downside, if the web site is in japanese, I imagine the instructions are too, and without instructions the chances of me understanding the schematic well enough to duplicate it are nill
I agree. It costs what it costs to make it, and if people want it bad enough they'll pay for it. 600$ isn't THAT far out of line for a quality plain old cd deck with a lot of nice features, the clarion autoPC is still about a grand I think (and all it has are lame maps and crap). I'd probably buy one if it was cool and worked well.
They are working on a GPS precision approach, it's in a few big airports for testing, I don't know if they plan to replace ILS with it or not. From what I've read/been taught they use differential GPS in a way, it has a ground station on or near the field to have a fixed point in the geometry to correct for the vertical inaccuracy and SA effect in GPS. The fact that the DoD can turn off GPS any time they wish is one aspect being debated, the rest of the world wants us to open up GPS completely.
Aviation in general is a conservative business. If it works, and it's safe, there's no reason to change it. ILS hasn't really changed since it was first developed (mid 30's or so?) Aviation is almost never on the cutting edge. We're still clinging on to NDB's....
differential GPS is usually used to monitor movements accuratly (like the san andreas fault to within 1mm) Loran's being phased out in favor of GPS BTW
it's actually more like 300 meters. Most of the consumer GPS' don't have very good clocks in them adding to the error a quite a bit. If I remember right.001 of a second is 1800 meters or miles error (I can't remember which, and don't feel like going to get my notes)
The navy's been able to jam GPS near ships since at least the gulf war. I suppose it would be bad for the enemy to use our own GPS sat's to guide a missile into us. Also the DoD has their finger on the button and can turn it off whenever they want, causing some controversy in the aviation community. Plus the whole SA error added in the public use channel too.
Laptops in college classes
on
Laptop Exams?
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· Score: 1
I go to a university that requires students in the aviation department to lease a laptop as part of their tuition (an extra 550 or so $ a semester) so that they can access classroom powerpoint presentations etc. from class with a wireless LAN. Some of my classes have open book/anything you want tests, so I suppose you could use a notebook but I've never seen anyone do it. The laptops tend to be more of a hassle in this setting since no one is class really knows the systems. Maybe in a CS class it would work better.
my (REALLY) limited wiring experience
on
Wiring Your Home?
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· Score: 1
personally if I was going to wire my house I would try and do like what's been suggested and do it before the builder has it sheet rocked, but I'm sure most of them wouldn't allow it for whatever liability reasons. As far as I know you can use bare wire as long as it's the right type for the right application (like plenum where needed) and just requires a plain plastic electircal box in the wall. I've used the mod tap stuff myself at work and like it enough I'd use it in my home, it's easy to modify and customize if you need an RJ11, RJ45, coax and whatever else you could want. It's probably not the most attractive but it's fast to punch down and once the jacks are in you can swap out the modules later if you need. If I was wiring before drywalling I'd use a closet for a patch panel and the switch, maybe pick up a rack used or just bite it and buy a new one. Personally I'd kill to have coax, 2 phone lines, and 2 cat 5's to each room maybe even more.
Heh I just left the Portland area to go back to school. They're FREAKISH about their pronunciation. I think will-AM-it makes more sense. maybe not *shrug*
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I and a few friends are overloaded with customers and work (and good rates) tuning/optimizing other people's crappy work. I am consistently amazed that customers pay bottom dollar for the initial design and development work, and then up paying more later to make the application/database scalable. It keeps me employed and wealthy though...
I am a licensed pilot, and I am worried about the risk of a midair collision. I would not want to be flying (either private or commercial) in the vicinity of one of these UAVs.
Two months ago the WSJ predicted that Oracle would layoff 2,000 people after the merger, so this news should not be a surprise.
"Local Number Portability" (or LNP) will likely happen. The service providers may just introduce some disincentives to leave (e.g. two-year contract with penalty for early terminiation).
But... what people haven't thought about in the US is the cost of acquiring a new handset if switching between service providers that use different/incompatible technologies (e.g. Verizon with CDMA and T-Mobile with GSM).
I don't see the problem having Linux running on IBM zSeries hardware (aka MVS, S/390, mainframe, etc.). If it works, it works. And I've never seen anything better than IBM's mainframes for parallel I/O activity on huge scales...
Agreed. Like it or not, IBM's IMS hierarchical DB is still in use for many critical databases/systems. I haven't done any IMS work in years but it would be interesting to see if IBM has added some type of "direct" support for XML...
One might consider a "large" database in terms of total disk used for the tables, indexes, and logs. Or it could be total concurrent users logged in to the database. Or it could be total simultaneous users - different than concurrent users since simultaneous users are those actually issuing a SQL statement.
A high number of simultaneous users will require more processor/CPU capacity. A high number of concurrent users (with a low number of simultaneous users) might not require much processor capacity but will likely require more memory capacity due to the number of concurrent connections (and each connection having some amount of it's own memory).
Of course the other downside, if the web site is in japanese, I imagine the instructions are too, and without instructions the chances of me understanding the schematic well enough to duplicate it are nill
I agree. It costs what it costs to make it, and if people want it bad enough they'll pay for it. 600$ isn't THAT far out of line for a quality plain old cd deck with a lot of nice features, the clarion autoPC is still about a grand I think (and all it has are lame maps and crap). I'd probably buy one if it was cool and worked well.
They are working on a GPS precision approach, it's in a few big airports for testing, I don't know if they plan to replace ILS with it or not. From what I've read/been taught they use differential GPS in a way, it has a ground station on or near the field to have a fixed point in the geometry to correct for the vertical inaccuracy and SA effect in GPS. The fact that the DoD can turn off GPS any time they wish is one aspect being debated, the rest of the world wants us to open up GPS completely.
Aviation in general is a conservative business. If it works, and it's safe, there's no reason to change it. ILS hasn't really changed since it was first developed (mid 30's or so?) Aviation is almost never on the cutting edge. We're still clinging on to NDB's....
differential GPS is usually used to monitor movements accuratly (like the san andreas fault to within 1mm) Loran's being phased out in favor of GPS BTW
it's actually more like 300 meters. Most of the consumer GPS' don't have very good clocks in them adding to the error a quite a bit. If I remember right .001 of a second is 1800 meters or miles error (I can't remember which, and don't feel like going to get my notes)
The navy's been able to jam GPS near ships since at least the gulf war. I suppose it would be bad for the enemy to use our own GPS sat's to guide a missile into us. Also the DoD has their finger on the button and can turn it off whenever they want, causing some controversy in the aviation community. Plus the whole SA error added in the public use channel too.
I go to a university that requires students in the aviation department to lease a laptop as part of their tuition (an extra 550 or so $ a semester) so that they can access classroom powerpoint presentations etc. from class with a wireless LAN. Some of my classes have open book/anything you want tests, so I suppose you could use a notebook but I've never seen anyone do it. The laptops tend to be more of a hassle in this setting since no one is class really knows the systems. Maybe in a CS class it would work better.
personally if I was going to wire my house I would try and do like what's been suggested and do it before the builder has it sheet rocked, but I'm sure most of them wouldn't allow it for whatever liability reasons. As far as I know you can use bare wire as long as it's the right type for the right application (like plenum where needed) and just requires a plain plastic electircal box in the wall. I've used the mod tap stuff myself at work and like it enough I'd use it in my home, it's easy to modify and customize if you need an RJ11, RJ45, coax and whatever else you could want. It's probably not the most attractive but it's fast to punch down and once the jacks are in you can swap out the modules later if you need. If I was wiring before drywalling I'd use a closet for a patch panel and the switch, maybe pick up a rack used or just bite it and buy a new one. Personally I'd kill to have coax, 2 phone lines, and 2 cat 5's to each room maybe even more.
Just my random $.02 *shrug*
Heh I just left the Portland area to go back to school. They're FREAKISH about their pronunciation. I think will-AM-it makes more sense. maybe not *shrug*
I don't know if they left off the internal amp so much as to save money or to be more like a competition deck with 2 sets of RCA outs.
Also, with DSL there's almost no comitted information rate. I think the CIR for a 256k line is 10k. (at least here in oregon)