The problem with the lake analogy is that with a lake you can insert as much energy as you want anywhere you want and take as much as you want anywhere you want.. Electricity goes through cables with finite capacity. If you try to send too much power down the cables they heat, stretch and break. Substations have capacities as well. Try to switch too much power and the station trips.
Wow you found a report that is nine years out of date. Lets look a little further into the first entry, the LIPA Edge system. One interesting point is that the program cost almost $45 million.
The sign-up fee cost ratepayers some $900,000, the thermostats cost upward of $10 million, and LIPA paid millions to install and maintain the thermostats and market the program. In all, between 2001 and 2008, LIPA spent $33 million to fully fund the program, which is considered among the most effective energy-efficiency programs in LIPA's arsenal, according to a report.
The washing machine does that automatically for you.
And they sit wet in the washer until you put them in the drier. That may be quite a while if you forget or do not have time in the morning. Wet cloths left for hours equals mold.
If there was no peak price, the peak would be even higher.
That is speculation and there is still a huge peak when the prices are high. Peak pricing helps a bit but is not a complete solution.
For the up to 8 hours you wet cloths sit in the washer what happens? How many people do you know get up early enough to hang cloths to dry? What if it is raining? What if one lives in an apartment building?
What were the actual questions? Was it worded to elicit no's? Did the respondents understand the question? What was the definition of "major security breach"? Was the threshold so low that things like not changing a password every 30 days is a major security breach? Who responded to the survey? Were they people who only see low level issues?
Surveys can be tailored to get any desired response.
Security systems need to work for everyone not just you. The more "special cases" the weaker the security is.
Oh, and if it breaks the database, that's your problem.
If renaming a server is not easily fixed by a config change then whoever wrote the system is an idiot. Sorry but we can't deal with your and the other 20 naming schemes that individuals though were "cool".
We just patched all the servers for greater security. Too bad you can't use your software to control or monitor them anymore, but that's your problem.
If you are relying on a outdated control or monitoring software it is your problem. Your software may even be using the security flaw.
Due to a breach, everyone must change their password. Too bad it happened while you were off for a few days and needed to log in for an emergency, but that's your problem.
This is exactly the same as a person forgetting their password in an emergency situation. If your system can't handle it then it is your problem. Should we leave the leaked credentials valid till we contact everyone in the database? Even those on holidays who might be unreachable?
Except in practice it turns out that these measures _do_ influence power consumption.
Did you miss the demand/price graphs in the last paragraph? It shows that price does not influence demand. Where is your evidence that it does. (Repeating the same statement is not evidence)
You are using a very bad model to think of the electrical grid. It is not a huge pool where electricity injected anywhere on the grid is instantly available anywhere else on the grid. I call that the lake analogy. It is much more like a canal system with specific capacities between specific points and each canal has to be keeps full but not overflowing. Even though the grid may theoretically be balancing input and output there will be local shortages/oversupply because electricity takes time to move.
Here is a graph of California renewables output. The Wind line is not very smooth even though it is an average and there are no major storms going through which cause more fluctuation.
Also no one has ever made a cable anywhere near that long. An electrical conductor can weigh upwards of 3/4 of a ton per 1000 feet. The conductor alone could be 20,000 tons. Stronger yes, strong enough to support the weight of 30,000 feet plus the weight of the conductor plus the pull of the huge balloon? Doubtful.
I am sure a few people do. I doubt it is common though. Do you have an references to numbers of people who do this? You missed the rest of the statement. Leaving wet laundry around in a hot environment equals mold.
This has to be the stupidest. You can't pre-heat a cloths drier that you may or may not use? Keeping wet cloths around just in case the price of electricity drops is not a good idea. Mold and mildew grows quickly.
Intelligent car chargers can not only adapt to fluctuations in supply, but they can even feed energy back into the grid when the price spikes.
Which is a real pain if you need the car and the battery is not charged.
Smart devices can help a bit but they are not the "solution".
harness it at 30,000 ft and run a giant power cable
Here are some of the issues; 1. How heavy is a 30,000 ft cable that can carry the electricity? Probably tons 2. How strong must the cable be to be able to support itself? As the cable get stronger it also gets heavier and the baloon gets bigger which requires a heaver cable to hold it. It is an infinite circle. 3. How much tension will the supporting balloon place on the cable and turbines? As the balloon gets bigger there is more surface area and therefore more tension on the cable.
I doubt very much that one can build a 30,000 ft cable that can support itself, carry electricity and hold back a balloon large enough to support the cable and turbines. It is the same issue that is holding back the space elevator but on a smaller scale.
This can be fixed with flexible pricing of electricity. Charge more when electricity is scarce, and less when it is plentiful
People use electricity when they need to no matter what the price. We turn on lights when it is dark. We cook dinner at dinner time. We have showers in the morning or evening. We wash cloths when we have time. Little of this will be re-scheduled based on the cost of electricity. Are you really going to get up at 3AM to do laundry? I doubt it. Even if you have a timer are you going to leave your wet cloths in the washer till you get up? You might not remember and those cloths will sit for another ten hours. Are you going to skip your morning shower because it will cost you a dollar extra?
The other issue with wind power is that it can vary uncontrollably minute by minute. This is the kind of instability that needs to be leveled out by more storage. Storage has two functions; time shifting and supply leveling.
Look at what is happening now. Certain jurisdictions like California have peak and off-peak electricity rates. The demand is still high during high peak rate times. If you look at those two graphs you will see that price has little or no effect on demand.
You missed 3 points. 1. Not everyone has a cellphone. 2. Not everyone has an email address. 3. Using Pesos is using cash therefore it is no longer cashless.
The US has yet to have a huge problem like making the currency unusable. I bet if that happened elections in the US would be very different. By the way there are midterm elections as well so there are elections every 2 years.
I too have worked on systems that have been in documentation hell. On the other hand I have been lost in systems that have had no documentation. It is all about balance. Too much documentation is bad. Too little documentation is also bad. Too many meeting is bad. Too few meeting is also bad. Finding the happy medium is the key.
Which is why I hold all processes are flawed, the best process is no process.
You are delusional if you don't think you have a process. For example you stated that you review requirements docs until you are satisfied they are complete. That is part of a process. Just because you don't label it does not meant that it is not a process.
The waterfall method MUST be preformed exactly like this:
No, waterfall is a guideline and not a strict rule.
Steps 1 and 2 are done by your project management team. Step 3 is done by you and I doubt you can do that in half an hour for a large system. Step 4 is done by you. If step 5 is done by you then you are leaving yourself open to coding only testing to what they got right. You also do step 6 or nothing gets out. These steps do not need to be done by separate people. They are just separate phases.
By the way, there is a continuum between strict waterfall and Agile. Few companies are on either end. The way you work is closer to waterfall than agile and it is a defined process.
Slashdot Mirror
The problem with the lake analogy is that with a lake you can insert as much energy as you want anywhere you want and take as much as you want anywhere you want.. Electricity goes through cables with finite capacity. If you try to send too much power down the cables they heat, stretch and break. Substations have capacities as well. Try to switch too much power and the station trips.
Wow you found a report that is nine years out of date. Lets look a little further into the first entry, the LIPA Edge system. One interesting point is that the program cost almost $45 million.
The sign-up fee cost ratepayers some $900,000, the thermostats cost upward of $10 million, and LIPA paid millions to install and maintain the thermostats and market the program. In all, between 2001 and 2008, LIPA spent $33 million to fully fund the program, which is considered among the most effective energy-efficiency programs in LIPA's arsenal, according to a report.
The washing machine does that automatically for you.
And they sit wet in the washer until you put them in the drier. That may be quite a while if you forget or do not have time in the morning. Wet cloths left for hours equals mold.
If there was no peak price, the peak would be even higher.
That is speculation and there is still a huge peak when the prices are high. Peak pricing helps a bit but is not a complete solution.
For the up to 8 hours you wet cloths sit in the washer what happens? How many people do you know get up early enough to hang cloths to dry? What if it is raining? What if one lives in an apartment building?
By the evening your clothes are dry.
Or covered in bird crap.
What were the actual questions? Was it worded to elicit no's? Did the respondents understand the question?
What was the definition of "major security breach"? Was the threshold so low that things like not changing a password every 30 days is a major security breach? Who responded to the survey? Were they people who only see low level issues?
Surveys can be tailored to get any desired response.
Security systems need to work for everyone not just you. The more "special cases" the weaker the security is.
Oh, and if it breaks the database, that's your problem.
If renaming a server is not easily fixed by a config change then whoever wrote the system is an idiot. Sorry but we can't deal with your and the other 20 naming schemes that individuals though were "cool".
We just patched all the servers for greater security. Too bad you can't use your software to control or monitor them anymore, but that's your problem.
If you are relying on a outdated control or monitoring software it is your problem. Your software may even be using the security flaw.
Due to a breach, everyone must change their password. Too bad it happened while you were off for a few days and needed to log in for an emergency, but that's your problem.
This is exactly the same as a person forgetting their password in an emergency situation. If your system can't handle it then it is your problem. Should we leave the leaked credentials valid till we contact everyone in the database? Even those on holidays who might be unreachable?
So you get up at 5AM to put your laundry in the drier? You would be surprised how fast mold grows.
Except in practice it turns out that these measures _do_ influence power consumption.
Did you miss the demand/price graphs in the last paragraph? It shows that price does not influence demand. Where is your evidence that it does. (Repeating the same statement is not evidence)
You are using a very bad model to think of the electrical grid. It is not a huge pool where electricity injected anywhere on the grid is instantly available anywhere else on the grid. I call that the lake analogy. It is much more like a canal system with specific capacities between specific points and each canal has to be keeps full but not overflowing. Even though the grid may theoretically be balancing input and output there will be local shortages/oversupply because electricity takes time to move.
Here is a graph of California renewables output. The Wind line is not very smooth even though it is an average and there are no major storms going through which cause more fluctuation.
Also no one has ever made a cable anywhere near that long. An electrical conductor can weigh upwards of 3/4 of a ton per 1000 feet. The conductor alone could be 20,000 tons. Stronger yes, strong enough to support the weight of 30,000 feet plus the weight of the conductor plus the pull of the huge balloon? Doubtful.
Some will many won't. If the house is hot, people will use the AC.
I am sure a few people do. I doubt it is common though. Do you have an references to numbers of people who do this? You missed the rest of the statement. Leaving wet laundry around in a hot environment equals mold.
Intelligent appliances,
Which no one has and no one is buying.
and it can pre-chill when spot prices drop.
Most of which is lost when the door is opened.
Same for the heating element in a clothes dryer.
This has to be the stupidest. You can't pre-heat a cloths drier that you may or may not use? Keeping wet cloths around just in case the price of electricity drops is not a good idea. Mold and mildew grows quickly.
Intelligent car chargers can not only adapt to fluctuations in supply, but they can even feed energy back into the grid when the price spikes.
Which is a real pain if you need the car and the battery is not charged.
Smart devices can help a bit but they are not the "solution".
harness it at 30,000 ft and run a giant power cable
Here are some of the issues;
1. How heavy is a 30,000 ft cable that can carry the electricity? Probably tons
2. How strong must the cable be to be able to support itself? As the cable get stronger it also gets heavier and the baloon gets bigger which requires a heaver cable to hold it. It is an infinite circle.
3. How much tension will the supporting balloon place on the cable and turbines? As the balloon gets bigger there is more surface area and therefore more tension on the cable.
I doubt very much that one can build a 30,000 ft cable that can support itself, carry electricity and hold back a balloon large enough to support the cable and turbines. It is the same issue that is holding back the space elevator but on a smaller scale.
This can be fixed with flexible pricing of electricity. Charge more when electricity is scarce, and less when it is plentiful
People use electricity when they need to no matter what the price. We turn on lights when it is dark. We cook dinner at dinner time. We have showers in the morning or evening. We wash cloths when we have time. Little of this will be re-scheduled based on the cost of electricity. Are you really going to get up at 3AM to do laundry? I doubt it. Even if you have a timer are you going to leave your wet cloths in the washer till you get up? You might not remember and those cloths will sit for another ten hours. Are you going to skip your morning shower because it will cost you a dollar extra?
The other issue with wind power is that it can vary uncontrollably minute by minute. This is the kind of instability that needs to be leveled out by more storage. Storage has two functions; time shifting and supply leveling.
Look at what is happening now. Certain jurisdictions like California have peak and off-peak electricity rates. The demand is still high during high peak rate times. If you look at those two graphs you will see that price has little or no effect on demand.
Then why are they having currency issues if they are so good?
Keep voting the same people in and they deserve what they get.
You missed 3 points.
1. Not everyone has a cellphone.
2. Not everyone has an email address.
3. Using Pesos is using cash therefore it is no longer cashless.
The US has yet to have a huge problem like making the currency unusable. I bet if that happened elections in the US would be very different. By the way there are midterm elections as well so there are elections every 2 years.
So no money can change hands without lots of technology and probably an internet connection.
How do you deal with small purchases from small vendors? An example would be a child's allowance.
Argentina is a democracy. Vote the idiots out of power.
I too have worked on systems that have been in documentation hell. On the other hand I have been lost in systems that have had no documentation. It is all about balance. Too much documentation is bad. Too little documentation is also bad. Too many meeting is bad. Too few meeting is also bad. Finding the happy medium is the key.
Which is why I hold all processes are flawed, the best process is no process.
You are delusional if you don't think you have a process. For example you stated that you review requirements docs until you are satisfied they are complete. That is part of a process. Just because you don't label it does not meant that it is not a process.
If you're not going to follow a strict guide then there is no point giving it name.
As with all labels, the idea is to give a starting point to quickly describe a process. Labels are never 100% exact.
No two companies use exactly the same process. Most use some version of waterfall. Some use a version of agile.
The less overhead you introduce into software developer the more enjoyable it is.
It works until two teams start stepping on each other's toes due to lack of process.
The waterfall method MUST be preformed exactly like this:
No, waterfall is a guideline and not a strict rule.
Steps 1 and 2 are done by your project management team.
Step 3 is done by you and I doubt you can do that in half an hour for a large system.
Step 4 is done by you.
If step 5 is done by you then you are leaving yourself open to coding only testing to what they got right.
You also do step 6 or nothing gets out. These steps do not need to be done by separate people. They are just separate phases.
By the way, there is a continuum between strict waterfall and Agile. Few companies are on either end. The way you work is closer to waterfall than agile and it is a defined process.
You just described the waterfall process.