This hack was far less than reliable because the 720kb floppies actually used a different magnetic film than the high density ones. You just tricked the drive into writing double density data to the disk and usually it worked.
With 5.25" floppies you were using a doubled sided disk as the equivalent of 2 single sided disks since most disks of that time were double sided for the IBM drives.
To add to that wonderful answer. The reason was because Apple II drives (and many other drives actually) were single sided, meaning they only had 1 write head, unlike the double-sided IBM drives of the time.
The big problem here is that the people put Frontpage server extensions on the server.
#1 The stability of said extensions is low to none.
#2 The 98 version of the extensions runs on NT4 if I remember right. Ick
#3 The server extensions are all about breaking security by putting another way to write to the server.
What this all adds up to mean is if you install FP Server Extenions in a production environment you are a bonehead. It slows down, crashes, and in lots of other ways renders worthless your webserver. If I remember right they were designed for coprorate use to make posting web documents easier on the LAN and not really focused at the internet at large. I'd say this is not a security hole in IIS so much as the admitted lack of security in FP Server Extensions so be bright and don't use them where they aren't recommended.
I think the above point was not so much that not crediting the authors of the work is a moral problem but more that it is a legal problem by the time you get to college. Not that too many law suits are going to come over Phys 106 but you might get a whole lot of people up in arms in your upper level courses where the papers have a very real possibility of being published.
We had a very good prof quit teaching at our school because of a similar situation.
The teacher caught them blatently cheating and told them they had failed the course. The knew they couldn't win by fighting the actual grade so they went and got withdrawl sheets for the class. The teacher refused to sign them (and the dean backed her at the time) because she felt that the students should have the failure on thier record.
Anyways the students had rich parents who hired lawyers and at that poin the dean caved. The prof said that she would not teach in a school where breaches of integrity were allowed and moved to cali where she got paid twice as much.
I think that if the cheating is substantiated that I give kudo's to the prof and the administration for backing up thier policies.
Thats the difference of when a teacher grades the papers vs spawning off the jobs to a million mindless grad students. I mean the teachers are paid to teach right, that doesn't include the grading part I guess.
At that point it all depends on reputation. The school really doesn't WANT to expell you. I don't know a single prof that you couldn't talk this situation over with. Probably would get off scott free if it was a first offence type thing. Possibly could get a "late pentalty" on the paper at most. If nothing else they would go ask that other person and explore more into it.
On the other hand if you have been sneaky in the past the prof might say "You do this all the time leave me alone."
The best asset to have in college is a few proffesors on your side.
Of course this has been said over and over but I will repeat. The professor used the program to find candidates for possible cheating. He then looked at this much smaller list and made actual "by hand" comparisons of the papers and found large portions if not entire essays that were the same. If that isn't proof of cheating I don't know what is.
I must admit there is something lost when you rely on a calculator. Those basic rote type mathematics like addition and subtraction are very slow for me. They always have been so I'm not sure that not using a calculator would have helped me get faster with them, but having won sure doesn't give me incentive to find out.
The reason for handwritten notes is that its a farily well shown fact that the more times you write something down by hand the better you remember it. There is also the fact that a random sheet of notes handwritten is nearly useless unless you wrote it yourself, understand the concepts well enough to understand what you wrote, and have some sort of resonable organization on the page.
I never liked requiring work for the grade. Thats not partial credit thats just crap. Partial credit only benifits you when your answer is not correct, if the final answer is complete and correct you get full credit whether you show your work or not.
That line of thinking does hold true when coupled with the strongly held opinion of corporations that its not worth doing if you don't get paid for it.
The problem is this person who cheated to get that piece of paper now has a document that says that they have more useful qualities than they really do.
Face it people, "all Men are NOT created equal" (to purposely misquote Thomas Jefferson and his buds from the delcaration of independance). Some people are made of college graduate material and some people are made of burger flipper material and all of that is good.
The problem is we have a great surplus of people to do the jobs and they all want paid a million bucks and I don't think its right to lie and cheat your way in to those positions. May the person that can write a computer program or an essay or whatever get the job that requires it and may the rest of the people fight over the burgers. True it is elitism but of the most useful and necessary kind. Would you want your mother repairing your computer? (no offence to the probable high number of extremely competant mothers in the world)
Thats not such a bad thing because you understand how it all works. The problem is when you transfer that program to Bob's calculator and Bob does his homework with it and has no idea whats going on. At that point a great disservice (depending on how much you value the quadratic formula) has been done to Bob and the classes job has failed.
Most of the time you CANNOT get a resonable answer out of a calculator without understanding the concept of solving the problem you are working on. The exception to this of course is ripping off programs that just take a few inputs and spit out an answer, but a calculator itself rarely gives you much help, except for not doing the long division incorrectly like I tend to when in a hurry.
Bottom line is a computer can't think, only calculate extremely quickly and accurately.
Another note, to discourage calculator use, give partial credit. The calculator program user will have no work so if they have a typo in thier calculations or whatever, they lose 100% of the value of the question where as someone that showed all thier work and got one little step wrong could get nearly full credit. The other way is to write intelligent test questions that require you to think to understand the solution but have easy setup and calculations so that even if the calculator helps you its not on the important stuff. Word problems rock for this purpose.
Though I must say I pulled off a LOT of B's by heavily using partial credit. Sketch down the first few steps of solving the problem that I could remember and get 75% to 90% credit on the problem even though I had no idea how to actually complete the solution.
I guess I didn't think the explanation through really well. The whole system is acclerating all the time (because its swinging in a circle) and the part outside the middle would zoom away at the rate specified by its angular momentum (no not at the rate of its angular momentum but at whatever rate comes out of the calculations based on that) and the size of the arc.
The same sort of outward force would have an effect on the falling piece as well but gravity would be the stronger force in that case.
The way I understand it if the rope got cut at the very top or the very bottom not a whole lot would happen.
The whole system is balanced at the geosynchronus orbit in the center. That means the force exerted on the very bottom and the very top of the rope is none, you theoretically could grab the bottom and move it around no problem and it wouldn't pull you off into space or anything silly like that.
The dangerous thing as you pointed out is if the rope breaks somewhere nearer to the middle. In which case everything that is closer to the earth will fall to the earth and everything that is farther from the earth will sling into space, the speed of each is dependant on where the break is.
For instance if the rope broke really near the earth the part near the earth would not weigh a terrible amount and so wouldn't be too spectacular and the part away from the earth would just slowly float away because the balance would not be offset by a whole lot.
If it broke apart really near the away from earth portion things would be more interesting, the bit that flew to space would fall slowly, then bit going to the earth would start out slowly but pick up speed faster and faster as less of the rope was beyond the balance point and when none of the rope was beyond the balance point the whole thing would be accelerating at the rate of gravity. Ouch.
If it split dead center the portion below the center would right away fall at the rate of gravity and the part away from the earth would zoom away at a similar speed (though not accelerating of course).
I think that the worst situation to happen would be the second that I listed because the rope would be the biggest falling to earth, however it is also one of the ones that is easy to fix if you catch it early because the process could start slowly allowing you to zoom out there and attach a new piece to maintain equalibrium. Same with the first part listed. When the rope breaks in the center things seem like they would happen fast enough and with enough force that you couldn't "catch it" and fix the problem.
Finally we examine what happens if the rope does fall and the earth is not destroyed (which I don't know if it really would be or not honestly) how easy would it be to fix? Well I assume building a 40,000km (or whatever) rope is expensive and slow, and dragging it out in to space would be quite difficult.
An interesting property of space elevators is that you only have to power the cargo to the 1/2 way point, once you are past that the cargo would naturally accelerate the rest of the way so braking would be the only issue. For launches it would have the nifty effect of getting any ship up to speed and have a "running start".
It would be interesting to see what the stats for new subscribers on each type of service are. I have a feeling that the number of new subscribers is growing in general and its a toss of the coin whether a cable or DSL company can or will serve your area.
If you look at how many accounts on DSL were dropped because of DSL companies going under that alone could explain the difference in growth between the two technologies.
An interesting upside to cable might be the "all services through one pipe" philosophy that AT&T is going with. For a fixed fee in select areas you can get cable TV, cable internet and phone service (over the cable line) including long distance. If that goes wide spread it could change things drastically in favor of cable.
Considering that MS really only wants to control your computer dollars, and AOL wants to control all of your entertainment dollars, I think you have less to lose if MS takes over the i-net than AOL.
Couple that with the fact that MS can actually write resonable applications and AOL doesn't have that experience that gives another mark to MS.
In the end it seems that the i-net will be ruled by one empire or the other and I'd rather side with a company that cares about high end users as well as the people at home who have trouble finding the power switch and will not dumb down the i-net for us.
Where I work there is no amount of hours listed in the contract. Basically you talk with your manager, set up some goals before the review period you get a score. Too many low scores and you are fired. A good high score and you get a healthy raise.
I usually work about 38 to 50 hours depending on what I'm doing. The amount of that which is super serious work is about 25 to 35 hours a week. The only reason I don't worry about going home at any special time or work super fixed hours is that I'm a single guy with noone at home right now. I really enjoy what I do so if I end up doing a 15 hour day its really just because I wanted to be there doing it.
You are correct, the key is efficiency. I can work less hours than people around me becuase I actually get work done. When I sit down with a problem I really crank out a result fast.
I like the relationship with the employer, hours worked don't mean much, but amount of work done means a great deal.
There is no need for Open Source software to achieve this goal. I think the interface specifications should be open for hardware for sure. If the creators of the hardware decide to write software to go with the hardware and share the source thats all cool and they are all cool and whatever, but if the company decides not to share the source then thats cool too. The only time its not is when they don't at least share the specification of the interface.
The x-box has an ethernet adapter. To make it work I'm sure you will just plug it in to your DSL or cable modem. Maybe NAT it on your home lan or for gosh sakes connect it to internet connection sharing.
Then consider that the x-box has directX which already has good internet game communication API's and I think we have a good recipie for internet based multiplayer games right off the starting blocks.
As mentioned earlier Goldeneye was a GREAT game based on the movie. The game was built totally to make good gameplay on the N64 and thats its best quality. There was a challenging single player experience and you have to admit playing deathmatches with all the various mod's rocks.
As with any game, its not the idea that makes the game its the execution. Lets hope that microsoft manages to execute on this one. It would be nice to get a killer game out for the platform.
You have to do basically 2 presses to do ctrl-esc r. You do ctrl-esc and the windows menu pops up, then you hit r.
The other way is you hold down window key and press r which is much easier. Now I wouldn't at all mind putting the windows key somewhere else on the keyboard (maybe between the arrow keys and the edit keys, or above the edit keys by pause or something), but I do want the key. I think my most used shortcut keys on windows are win-r, win-m and win-e and when I go to a computer without that key I am much slower.
<whine>Go ahead and move the key but please don't take it away from me.</whine>
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With 5.25" floppies you were using a doubled sided disk as the equivalent of 2 single sided disks since most disks of that time were double sided for the IBM drives.
To add to that wonderful answer. The reason was because Apple II drives (and many other drives actually) were single sided, meaning they only had 1 write head, unlike the double-sided IBM drives of the time.
#1 The stability of said extensions is low to none.
#2 The 98 version of the extensions runs on NT4 if I remember right. Ick
#3 The server extensions are all about breaking security by putting another way to write to the server.
What this all adds up to mean is if you install FP Server Extenions in a production environment you are a bonehead. It slows down, crashes, and in lots of other ways renders worthless your webserver. If I remember right they were designed for coprorate use to make posting web documents easier on the LAN and not really focused at the internet at large. I'd say this is not a security hole in IIS so much as the admitted lack of security in FP Server Extensions so be bright and don't use them where they aren't recommended.
I think the above point was not so much that not crediting the authors of the work is a moral problem but more that it is a legal problem by the time you get to college. Not that too many law suits are going to come over Phys 106 but you might get a whole lot of people up in arms in your upper level courses where the papers have a very real possibility of being published.
The teacher caught them blatently cheating and told them they had failed the course. The knew they couldn't win by fighting the actual grade so they went and got withdrawl sheets for the class. The teacher refused to sign them (and the dean backed her at the time) because she felt that the students should have the failure on thier record.
Anyways the students had rich parents who hired lawyers and at that poin the dean caved. The prof said that she would not teach in a school where breaches of integrity were allowed and moved to cali where she got paid twice as much.
I think that if the cheating is substantiated that I give kudo's to the prof and the administration for backing up thier policies.
Thats the difference of when a teacher grades the papers vs spawning off the jobs to a million mindless grad students. I mean the teachers are paid to teach right, that doesn't include the grading part I guess.
On the other hand if you have been sneaky in the past the prof might say "You do this all the time leave me alone."
The best asset to have in college is a few proffesors on your side.
Of course this has been said over and over but I will repeat. The professor used the program to find candidates for possible cheating. He then looked at this much smaller list and made actual "by hand" comparisons of the papers and found large portions if not entire essays that were the same. If that isn't proof of cheating I don't know what is.
I must admit there is something lost when you rely on a calculator. Those basic rote type mathematics like addition and subtraction are very slow for me. They always have been so I'm not sure that not using a calculator would have helped me get faster with them, but having won sure doesn't give me incentive to find out.
The reason for handwritten notes is that its a farily well shown fact that the more times you write something down by hand the better you remember it. There is also the fact that a random sheet of notes handwritten is nearly useless unless you wrote it yourself, understand the concepts well enough to understand what you wrote, and have some sort of resonable organization on the page.
I never liked requiring work for the grade. Thats not partial credit thats just crap. Partial credit only benifits you when your answer is not correct, if the final answer is complete and correct you get full credit whether you show your work or not.
That line of thinking does hold true when coupled with the strongly held opinion of corporations that its not worth doing if you don't get paid for it.
Face it people, "all Men are NOT created equal" (to purposely misquote Thomas Jefferson and his buds from the delcaration of independance). Some people are made of college graduate material and some people are made of burger flipper material and all of that is good.
The problem is we have a great surplus of people to do the jobs and they all want paid a million bucks and I don't think its right to lie and cheat your way in to those positions. May the person that can write a computer program or an essay or whatever get the job that requires it and may the rest of the people fight over the burgers. True it is elitism but of the most useful and necessary kind. Would you want your mother repairing your computer? (no offence to the probable high number of extremely competant mothers in the world)
Thats not such a bad thing because you understand how it all works. The problem is when you transfer that program to Bob's calculator and Bob does his homework with it and has no idea whats going on. At that point a great disservice (depending on how much you value the quadratic formula) has been done to Bob and the classes job has failed.
(Sorry the engineers in my school always gave the english majors a bad time so I couldn't help myself)
Bottom line is a computer can't think, only calculate extremely quickly and accurately.
Another note, to discourage calculator use, give partial credit. The calculator program user will have no work so if they have a typo in thier calculations or whatever, they lose 100% of the value of the question where as someone that showed all thier work and got one little step wrong could get nearly full credit. The other way is to write intelligent test questions that require you to think to understand the solution but have easy setup and calculations so that even if the calculator helps you its not on the important stuff. Word problems rock for this purpose.
Though I must say I pulled off a LOT of B's by heavily using partial credit. Sketch down the first few steps of solving the problem that I could remember and get 75% to 90% credit on the problem even though I had no idea how to actually complete the solution.
The same sort of outward force would have an effect on the falling piece as well but gravity would be the stronger force in that case.
The whole system is balanced at the geosynchronus orbit in the center. That means the force exerted on the very bottom and the very top of the rope is none, you theoretically could grab the bottom and move it around no problem and it wouldn't pull you off into space or anything silly like that.
The dangerous thing as you pointed out is if the rope breaks somewhere nearer to the middle. In which case everything that is closer to the earth will fall to the earth and everything that is farther from the earth will sling into space, the speed of each is dependant on where the break is.
For instance if the rope broke really near the earth the part near the earth would not weigh a terrible amount and so wouldn't be too spectacular and the part away from the earth would just slowly float away because the balance would not be offset by a whole lot.
If it broke apart really near the away from earth portion things would be more interesting, the bit that flew to space would fall slowly, then bit going to the earth would start out slowly but pick up speed faster and faster as less of the rope was beyond the balance point and when none of the rope was beyond the balance point the whole thing would be accelerating at the rate of gravity. Ouch.
If it split dead center the portion below the center would right away fall at the rate of gravity and the part away from the earth would zoom away at a similar speed (though not accelerating of course).
I think that the worst situation to happen would be the second that I listed because the rope would be the biggest falling to earth, however it is also one of the ones that is easy to fix if you catch it early because the process could start slowly allowing you to zoom out there and attach a new piece to maintain equalibrium. Same with the first part listed. When the rope breaks in the center things seem like they would happen fast enough and with enough force that you couldn't "catch it" and fix the problem.
Finally we examine what happens if the rope does fall and the earth is not destroyed (which I don't know if it really would be or not honestly) how easy would it be to fix? Well I assume building a 40,000km (or whatever) rope is expensive and slow, and dragging it out in to space would be quite difficult.
An interesting property of space elevators is that you only have to power the cargo to the 1/2 way point, once you are past that the cargo would naturally accelerate the rest of the way so braking would be the only issue. For launches it would have the nifty effect of getting any ship up to speed and have a "running start".
If you look at how many accounts on DSL were dropped because of DSL companies going under that alone could explain the difference in growth between the two technologies.
An interesting upside to cable might be the "all services through one pipe" philosophy that AT&T is going with. For a fixed fee in select areas you can get cable TV, cable internet and phone service (over the cable line) including long distance. If that goes wide spread it could change things drastically in favor of cable.
Couple that with the fact that MS can actually write resonable applications and AOL doesn't have that experience that gives another mark to MS.
In the end it seems that the i-net will be ruled by one empire or the other and I'd rather side with a company that cares about high end users as well as the people at home who have trouble finding the power switch and will not dumb down the i-net for us.
I usually work about 38 to 50 hours depending on what I'm doing. The amount of that which is super serious work is about 25 to 35 hours a week. The only reason I don't worry about going home at any special time or work super fixed hours is that I'm a single guy with noone at home right now. I really enjoy what I do so if I end up doing a 15 hour day its really just because I wanted to be there doing it.
You are correct, the key is efficiency. I can work less hours than people around me becuase I actually get work done. When I sit down with a problem I really crank out a result fast.
I like the relationship with the employer, hours worked don't mean much, but amount of work done means a great deal.
There is no need for Open Source software to achieve this goal. I think the interface specifications should be open for hardware for sure. If the creators of the hardware decide to write software to go with the hardware and share the source thats all cool and they are all cool and whatever, but if the company decides not to share the source then thats cool too. The only time its not is when they don't at least share the specification of the interface.
Then consider that the x-box has directX which already has good internet game communication API's and I think we have a good recipie for internet based multiplayer games right off the starting blocks.
As with any game, its not the idea that makes the game its the execution. Lets hope that microsoft manages to execute on this one. It would be nice to get a killer game out for the platform.
The other way is you hold down window key and press r which is much easier. Now I wouldn't at all mind putting the windows key somewhere else on the keyboard (maybe between the arrow keys and the edit keys, or above the edit keys by pause or something), but I do want the key. I think my most used shortcut keys on windows are win-r, win-m and win-e and when I go to a computer without that key I am much slower.
<whine>Go ahead and move the key but please don't take it away from me.</whine>