There are some interesting mathematical problems. Like given a certain width and an endless number of rows, if you start in at an arbitrary 'square', what is the distribution of the number of other squares that you can reach? (with or without wrapping?) What if it is endless in two directions?
The victim was found in a field along the road to her home. She had celebrated Queens Day in a disco and was biking home. Sperm was found on her body and she had a cut in her neck. A closer examination revealed that she was strangled with her own bra. DNA found on a cigarette lighter in bag matched DNA found on her body, suggesting that the person who killed her, was someone she knew.
Google translate of Dutch fact article.
It is important that they were living in a small community. It already has been reported that some family members of the victim had contact with the man who had been arrested. It is thus possible that the victim knew the man. And even if they did not know each other, it is still possible that the cigarette lighter was passed on through a family member. Cigarette lighters belong to those items that are often 'shared' among people, especially among people that have some social relationship.
If you have to factor out custromer-specific stuff it means that your code is not well refactored and does not have clean interfaces. While you are writing code for a customer, you should take care that at the end you can release your open source parts immediately. The extra time this might cost is quickly returned, because your code will be cleaner and easier to develop. It will also result in component that are beter to use by others, because they do have a clean interface. One reason why open source components are often not reused because they have a bad interface. Refactoring is a great technique to develop clean interfaces. You will benefit it from yourself if you learn to create clean interfaces. It is an art not easily managed, I have come to realize.
Up to now it always has been legal to make download materials, as this is regarded equivalent with making a copy for private use. A right that has been well established in Dutch law for a long time. Earlier this year the House of Representatives concluded with a strong majority that this should remain legal. I think it is a rather unique situation that a Dutch lawyer is asking the European Court of Justice to judge about a Dutch law. This might have far reaching consequences, and could give rise to strong anti-European feelings, because downloading from an illegale source is very common in the Netherlands. All home media centers are equiped with applications client to automatically download movies on request.
For anyone who believes that anyone can become a programmer, I would like to answer the question: Can anyone become a surgeon? There are lots of people who can be taught about basic medical issues and how to treat them, but not all of them can become surgeons. And just as there are lots of people who can learn to write some basic programs, there are few people who can program mission critical applications that fly planes.
I got a son with a "de novo" mutation (proven by DNA-sequencing of the MLL2 gene) and although the chance of getting such a child is small, the impact is very big. Luckily, I live in a country where lots of support is available and I did not go broke financially, but still the impact it had on our family is quite big. Although he is almost 15, he needs supervision like a 6 year old. Luckily, my marriage did not break-up, but I know that it happens frequently. Especially, for my daughter, this was a big burden, because for many years our family life was organized around his needs. He is a lovely boy and I love him very much, but we went through a lot of trouble.
I was 35 when I conceived my son. He was diagnosed with a 'de novo' (new) mutation in one of the two copies of his MLL2 gene: a single base pair was deleted at position 2272 ("c.2272delG"). This causes half of his MLL2 proteins to be not working resulting in Kabuki Syndrome. He has an academic IQ of around 50, but with some tasks he out smarts everyone I know: he can instantly see who are missing from a certain setting. Saw him walk into his class room, look around, walk to his teacher and when asked by her who were missing, mention the names without hesitating (or looking around) for a second.
It is not such a big risk and it has been done many times before with all kinds of space crafts. And you should also realize that many safety precautions has been build into the system. It is definitely not like doing a OS update on a PC. I presume that in case something goes wrong, the rover will get into some kind of safe mode sooner or earlier, allowing to establish communication again. Safe mode communication is at a very slow speed and it could take some time to establish contact again, but in many cases it has been able to revive spacecrafts from safe mode. Please note that the Spirit and Opportunity rover have had several software updates and also experienced multiple events of getting into safe mode for software and hardware errors.
If you would inform yourself, you would know that we are not talking about a general PC with 4Gbytes of memory here, but about a much smaller (but reliable and radiation hardend) PowerPC compatible system with limited RAM. The reason that they planned this update is because they want to remove the flight software for the trip to mars and replace it by software needed to drive and control the rover. It is true that they spend improving the software during the time that the spacecraft was flying to mars. That would be more than logical to do. Please note that the software for the Spirit and Opportunity rover also have been updated several times. It would not surprise me, that when they know the Curiosity Rover better, they will perform another software update.
I wonder if you are not setting your goals to high. I am sorry to hear that you had a serious car accident, but you should realize that if your memory has been affected, probably also your other mental abilities might have been compromized. Writing game software requires a lot of mental abilities, and if you can't make it further than the 4th chapter in "Head First C#", (I looked up the table of contents), I wonder whether you ever will be able to write some serious software. Maybe there is another occupation that could give you more joy than proceeding this route where you are going to meet frustration upon frustration.
Sudoku's are really simple for computers. Simply map them to an Exact Cover and then solve the Exact Cover by reduction. Never takes more than a few seconds, even for the most hard ones. This is because Sudoku's have one solution and I have never come across a Sudoku that has one solution and cannot be solved by simple logic reasoning. There do exist Exact Covers that have one solution, but require guessing. But even if some Sudoku would require some guessing, it still cannot be a complex problem, and a back-tracking algorithm would solve it quickly. See Hardest Sudoku for some more details, algorithms and such.
It's okay. Sadly, with Alzheimer's Disease progress is always negative. There is no cure and also no hope for improvements. Of course, patients varry from day to day, so sometimes you can be fooled in believing that there is progress, but in the long run this is not the case. Alzheimer's Disease is a fatal disease with an average life span of about ten years after it has been diagnosed. My wife was diagnosed based on abnormal protein levels in the brain fluid (through epidural), which at that time, 2006, was still experimental, but is now believed to be one of the most accurate methods available. At that time was 49 years old and thus is a rare case of Early Onset Alzheimer's Disease. Most often Alzheimer's Disease is a greater burden for the caretakers (family members) than the patient itself. Although the prognoses is very bad, it does not mean that is no longer can be happy.
With neuro-degenrative disorders (dementia) it is not the case that all brain cells die at once. Even with people who have progressed far, still have brain with living brain cells. The brain cells that are left can form new connections. Maybe the magnetic stimulation can improve the communication between the brain cells that are left. In the past decades several medicines have developed that stimulate the production of certain neurotransmitters with the same effect. However, most of these medicines only work with a few people and the effect is mostly not very dramatic. The problem is that all these things do not cure or even halt the neuro-degenerative process. It might be a breakthrough in the research but it is definitely not a breakthrough in the cure of such disorders. But any method that can elevate the simptoms is nevertheless important because for the suffers of these diseases and their caretakers.
My wife, when in the process of being diagnosed with Alzheimers, reported that her thinking was much clearer after she had got an MRI scan. The effect lasted only half a day. I reported this to her neurologist, who said that it was nonsense. But what I have read here, it looks like that what she reported was real. This was in the fall of 2012. In the mean time she has progressed a lot and I wonder if stimulation would have any benefit now.
Re:Is this puzzable solvable with no guessing at a
on
World's Hardest Sudoku
·
· Score: 1
According to my exact cover program (which required only logic reductions to solve the puzzle) this sudoku can be solved without having to make any guess.
My program for converting a Sudoku to an exact cover took 0,015 second. My program for solving an exact cover took 0,031 seconds. This time is including producing 23K output file containing log and result. This mainly due to the fact that the exact cover can be solved with only applying logic reductions, taking two columns and see if there an implication. If this is the case, all rows that do not contain a 1 value in both columns can be removed. This results in 60 rows giving the solution to the sudoku, one row for each empty position.
If you convert this Sudoku to an exact cover problem, it can be solved by logic reduction alone. An exact cover solver that I wrote took 0.031 seconds to do this (including generating output for each reduction it made). Exact cover problems are in NP-complete, but a Sudoku that can be solved with logic reasoning alone, can always be solved with only logic reductions.
I am getting the impression that the SAT score correlates rather strong with Verbal intelligence. While the type of puzzles, which I answered correctly within a second, are very much depending on non-verbal (performal/visual) intelligence. I think this is true for many of the Slashdot readers. But on the other hand, I have to agree, I often see intelligent people (especially those who are strong on verbal skils) make thinking errors like the one mentioned in the article, and I also often caught myself making these kind of mistakes, while I am rather strong non-verbal thinker. I guess that my experience with debugging has learned me to think things through and not rely on the first answer that pops up in my mind. I also have come to the realisation that real thinking is hard and requires effort. But it is also a fact that many intelligent people stumble on problems like the Monty Hall puzzle, and that some of those cannot be convinced of the correct answer. I have come to the conclusion that some people with a PhD degree are lacking the non-verbal intelligence required to understand a problem like the Monty Hall puzzle, which sometimes frustrates me.
I noticed that all the authors are Chinese. You would almost get the impression that research (in hard sciences) in the USA has been taken over by Chinese.
Slashdot Mirror
There are some interesting mathematical problems. Like given a certain width and an endless number of rows, if you start in at an arbitrary 'square', what is the distribution of the number of other squares that you can reach? (with or without wrapping?) What if it is endless in two directions?
The victim was found in a field along the road to her home. She had celebrated Queens Day in a disco and was biking home. Sperm was found on her body and she had a cut in her neck. A closer examination revealed that she was strangled with her own bra. DNA found on a cigarette lighter in bag matched DNA found on her body, suggesting that the person who killed her, was someone she knew. Google translate of Dutch fact article.
In another news message it was stated that his DNA matched with sperm and a hair found near the victim. That makes it sound a little different.
It is important that they were living in a small community. It already has been reported that some family members of the victim had contact with the man who had been arrested. It is thus possible that the victim knew the man. And even if they did not know each other, it is still possible that the cigarette lighter was passed on through a family member. Cigarette lighters belong to those items that are often 'shared' among people, especially among people that have some social relationship.
If you have to factor out custromer-specific stuff it means that your code is not well refactored and does not have clean interfaces. While you are writing code for a customer, you should take care that at the end you can release your open source parts immediately. The extra time this might cost is quickly returned, because your code will be cleaner and easier to develop. It will also result in component that are beter to use by others, because they do have a clean interface. One reason why open source components are often not reused because they have a bad interface. Refactoring is a great technique to develop clean interfaces. You will benefit it from yourself if you learn to create clean interfaces. It is an art not easily managed, I have come to realize.
Up to now it always has been legal to make download materials, as this is regarded equivalent with making a copy for private use. A right that has been well established in Dutch law for a long time. Earlier this year the House of Representatives concluded with a strong majority that this should remain legal. I think it is a rather unique situation that a Dutch lawyer is asking the European Court of Justice to judge about a Dutch law. This might have far reaching consequences, and could give rise to strong anti-European feelings, because downloading from an illegale source is very common in the Netherlands. All home media centers are equiped with applications client to automatically download movies on request.
For anyone who believes that anyone can become a programmer, I would like to answer the question: Can anyone become a surgeon? There are lots of people who can be taught about basic medical issues and how to treat them, but not all of them can become surgeons. And just as there are lots of people who can learn to write some basic programs, there are few people who can program mission critical applications that fly planes.
I guess that a (modified version of) SMART-L radar could do this job. Don't understand why 6 milion Euro is needed for building a demonstrator.
I got a son with a "de novo" mutation (proven by DNA-sequencing of the MLL2 gene) and although the chance of getting such a child is small, the impact is very big. Luckily, I live in a country where lots of support is available and I did not go broke financially, but still the impact it had on our family is quite big. Although he is almost 15, he needs supervision like a 6 year old. Luckily, my marriage did not break-up, but I know that it happens frequently. Especially, for my daughter, this was a big burden, because for many years our family life was organized around his needs. He is a lovely boy and I love him very much, but we went through a lot of trouble.
I was 35 when I conceived my son. He was diagnosed with a 'de novo' (new) mutation in one of the two copies of his MLL2 gene: a single base pair was deleted at position 2272 ("c.2272delG"). This causes half of his MLL2 proteins to be not working resulting in Kabuki Syndrome. He has an academic IQ of around 50, but with some tasks he out smarts everyone I know: he can instantly see who are missing from a certain setting. Saw him walk into his class room, look around, walk to his teacher and when asked by her who were missing, mention the names without hesitating (or looking around) for a second.
It is not such a big risk and it has been done many times before with all kinds of space crafts. And you should also realize that many safety precautions has been build into the system. It is definitely not like doing a OS update on a PC. I presume that in case something goes wrong, the rover will get into some kind of safe mode sooner or earlier, allowing to establish communication again. Safe mode communication is at a very slow speed and it could take some time to establish contact again, but in many cases it has been able to revive spacecrafts from safe mode. Please note that the Spirit and Opportunity rover have had several software updates and also experienced multiple events of getting into safe mode for software and hardware errors.
If you would inform yourself, you would know that we are not talking about a general PC with 4Gbytes of memory here, but about a much smaller (but reliable and radiation hardend) PowerPC compatible system with limited RAM. The reason that they planned this update is because they want to remove the flight software for the trip to mars and replace it by software needed to drive and control the rover. It is true that they spend improving the software during the time that the spacecraft was flying to mars. That would be more than logical to do. Please note that the software for the Spirit and Opportunity rover also have been updated several times. It would not surprise me, that when they know the Curiosity Rover better, they will perform another software update.
I wonder if you are not setting your goals to high. I am sorry to hear that you had a serious car accident, but you should realize that if your memory has been affected, probably also your other mental abilities might have been compromized. Writing game software requires a lot of mental abilities, and if you can't make it further than the 4th chapter in "Head First C#", (I looked up the table of contents), I wonder whether you ever will be able to write some serious software. Maybe there is another occupation that could give you more joy than proceeding this route where you are going to meet frustration upon frustration.
Sudoku's are really simple for computers. Simply map them to an Exact Cover and then solve the Exact Cover by reduction. Never takes more than a few seconds, even for the most hard ones. This is because Sudoku's have one solution and I have never come across a Sudoku that has one solution and cannot be solved by simple logic reasoning. There do exist Exact Covers that have one solution, but require guessing. But even if some Sudoku would require some guessing, it still cannot be a complex problem, and a back-tracking algorithm would solve it quickly. See Hardest Sudoku for some more details, algorithms and such.
It is easy to define a Soduku with more than one solution. Just take a Soduko and remove some hints. Great chance it will now have multiple solutions.
It's okay. Sadly, with Alzheimer's Disease progress is always negative. There is no cure and also no hope for improvements. Of course, patients varry from day to day, so sometimes you can be fooled in believing that there is progress, but in the long run this is not the case. Alzheimer's Disease is a fatal disease with an average life span of about ten years after it has been diagnosed. My wife was diagnosed based on abnormal protein levels in the brain fluid (through epidural), which at that time, 2006, was still experimental, but is now believed to be one of the most accurate methods available. At that time was 49 years old and thus is a rare case of Early Onset Alzheimer's Disease. Most often Alzheimer's Disease is a greater burden for the caretakers (family members) than the patient itself. Although the prognoses is very bad, it does not mean that is no longer can be happy.
URU in the Myst sequel of games has been open sourced by Cyan Worlds. See openuru.org.
With neuro-degenrative disorders (dementia) it is not the case that all brain cells die at once. Even with people who have progressed far, still have brain with living brain cells. The brain cells that are left can form new connections. Maybe the magnetic stimulation can improve the communication between the brain cells that are left. In the past decades several medicines have developed that stimulate the production of certain neurotransmitters with the same effect. However, most of these medicines only work with a few people and the effect is mostly not very dramatic. The problem is that all these things do not cure or even halt the neuro-degenerative process. It might be a breakthrough in the research but it is definitely not a breakthrough in the cure of such disorders. But any method that can elevate the simptoms is nevertheless important because for the suffers of these diseases and their caretakers.
My wife, when in the process of being diagnosed with Alzheimers, reported that her thinking was much clearer after she had got an MRI scan. The effect lasted only half a day. I reported this to her neurologist, who said that it was nonsense. But what I have read here, it looks like that what she reported was real. This was in the fall of 2012. In the mean time she has progressed a lot and I wonder if stimulation would have any benefit now.
According to my exact cover program (which required only logic reductions to solve the puzzle) this sudoku can be solved without having to make any guess.
My program for converting a Sudoku to an exact cover took 0,015 second. My program for solving an exact cover took 0,031 seconds. This time is including producing 23K output file containing log and result. This mainly due to the fact that the exact cover can be solved with only applying logic reductions, taking two columns and see if there an implication. If this is the case, all rows that do not contain a 1 value in both columns can be removed. This results in 60 rows giving the solution to the sudoku, one row for each empty position.
If you convert this Sudoku to an exact cover problem, it can be solved by logic reduction alone. An exact cover solver that I wrote took 0.031 seconds to do this (including generating output for each reduction it made). Exact cover problems are in NP-complete, but a Sudoku that can be solved with logic reasoning alone, can always be solved with only logic reductions.
I am getting the impression that the SAT score correlates rather strong with Verbal intelligence. While the type of puzzles, which I answered correctly within a second, are very much depending on non-verbal (performal/visual) intelligence. I think this is true for many of the Slashdot readers. But on the other hand, I have to agree, I often see intelligent people (especially those who are strong on verbal skils) make thinking errors like the one mentioned in the article, and I also often caught myself making these kind of mistakes, while I am rather strong non-verbal thinker. I guess that my experience with debugging has learned me to think things through and not rely on the first answer that pops up in my mind. I also have come to the realisation that real thinking is hard and requires effort. But it is also a fact that many intelligent people stumble on problems like the Monty Hall puzzle, and that some of those cannot be convinced of the correct answer. I have come to the conclusion that some people with a PhD degree are lacking the non-verbal intelligence required to understand a problem like the Monty Hall puzzle, which sometimes frustrates me.
I noticed that all the authors are Chinese. You would almost get the impression that research (in hard sciences) in the USA has been taken over by Chinese.
Yes, almost like claiming that you have violated the copyrights by copying the words "to be" from the works of Shakespear.