I'm on Ubuntu 16.04 and I notice that in the "Additional Drivers" tab of "Software &amp; Updates", the latest versions of NVIDIA drivers I can install are   version 367.57 from nvidia-367 (proprietary) version 370.28 from nvidia-370 (open source)   Aside from the fact that I don't know what "proprietary" and "open source" mean here, I also don't see an option to select the driver version based on my actual graphics card. I'm using GTX 1080 and the current Long Lived Branch version is 375.20; will the Ubuntu graphics PPA be updated eventually, or will I have to manually install 375?
Is there a package of Ubuntu drivers as driver pack solution? I tried to search for it, but I did not find it. If there is, how can I easily get it?
Is B1 visa in perfect condition valid on old damaged passport? I got my US B1 visa last month on my Indian passport. Someone in my family wrote a phone number on one of the blank page of my passport. As my passport is damaged now, can I travel with my current passport to US or I should apply for new passport? Also, will B1 visa be valid on old damaged passport if I get new passport? Troubleshoot High CPU usage by the "System" process Why does Li+ ion move to cathode in Li-ion battery? Bottom to top explanation of the Mahalanobis distance? How to compare (probability) predictive ability of models developed from logistic regression? I know some well-known measures are $c$ statistic, Kolmogorov-Smirnov $D$ statistic. However, as far as I know, those statistics take into account only of the rank order of the observations, and is invariant under changing the intercept of the logistic regression model (e.g. in oversampling-correction exercise).  In my current application, I need to depend on the accuracy of the logistic regression to predict probability of event. I know only of qualitative way of assessing models for probability prediction ability, namely by plotting "QQ-plot" of the actual vs predicted probability of event:   Score the validation dataset using the developed model. Rank the observations according to the predicted probability and group into $n$ buckets according to their rank of predicted probability. (First 1/n would go to the first bucket, next 1/n would go to the next ...) Calculate the average predicted and actual probability of Event for each bucket. Create a scatter plot of Predicted vs Actual - one point for each bucket.   I am wondering:   Is the "Q-Q plot" I mentioned above a legitimate way to assess predictive performance of models developed from logistic regression? If so, where may I find more reference for that? Is there any known quantitative way to assess the probability prediction ability of this kind of model? $(xy + 1)(yz + 1)(zx + 1) $ is a perfect square if and only if each factor is Series with denominator that is square of product of consecutive numbers Invariance of a maximally entangled state under unitary operation $U \otimes U^\dagger$ Apparently the (d-dimensional) maximally entangled state, $|E \rangle = \sum_{i} |ii\rangle /\sqrt{d}$ is invariant under operations of the form $U \otimes U^\dagger$. I want to prove this result, which amounts to showing that  $$\left(\sum_i U | i \rangle \otimes V |i \rangle = \sum_i | ii \rangle \right)\Rightarrow (V = U^\dagger )$$  I have no idea how to even start. I suppose it's some simple linear algebra result, but I don't see it. A hint would be appreciated. In Uzbekistan I was stopped, searched and questioned six times in one day.  At the border with Tajikistan, one official tried hiding my paperwork to elicit something from me.  In Kyrgyzstan, I was physically harassed and detained by the police, and about US$30 taken while they searched everything on me and a Dutch backpacker I was going to get food with.  I'm not particularly dodgy looking - it's happening to a lot of backpackers I meet.  Tourists are apparently a prime target for corrupt officials.  Any suggestions or tactics for avoiding these occurrences?  Aside from carrying only photocopies of your passport so that they can't hold your passport ransom, I've not heard many successful tips... If I left food out of the refrigerator for some period of time, is it still safe? If I left it out too long, can I salvage it by cooking it more? Powering NiChrome wire from battery I'm looking to power nichrome wire from battery. The problem I ran into is that desired length/width of the wire has very small resistance ~ 8 Ohm.  Several kinds of batteries I've tested have internal resistance much higher then that, which leads to wire staying cold and battery getting hot.  Is there any way to increase current drawn from the battery? Some kind of amplifier maybe?  Edit:    1.2V(rechargable) and 1.5V one, while not getting hot itself did not provide enough power to heat the wire. 3V did not provide enough power, even stacking 3 of them in series, only provided about 1V of voltage on the wire, and not enough amperage to heat the wire. 9V battery did provide enough amperage to heat the wire, but at the same time got very hot very quickly itself.   PS. I was wondering if  might work for this purpose? Is $\frac{\textrm{d}y}{\textrm{d}x}$ not a ratio? Show that $\ker \hat{T} = \text{ann}(\text{range } T)$ How to turn off notifications for individual apps? On my iphone, there is a "notifications" setting section, which basically just allows me to choose which apps has the power to notify me.  I was wondering if there's anything similar that is available on the Samsung Galaxy s2?  Basically, we have a new app called Scramble For Friends. And it keeps notifying us every time someone has finished their turn so that I can play. We play random people so this could be in the middle of the night or in a meeting etc.  It just vibrates but still - it's annoying and we want to turn it off. We also don't want to turn off other notifications like Email, Facebook etc. - we just want to turn off the notifications for Scramble For Friends.  I've been looking around in the Settings but there doesn't seem to be a universal page which deals just with notifications. I use Gedit a lot and thus tend to have a lot of tabs open at any one time. In Gedit 2.* I could switch between tabs using my mouse wheel but since Oneiric I can't. I assume this is because of various GTK "upgrades".  Does anybody know of a plugin (or workable fix -- that doesn't require me to recompile everything and its brother) that will see me back to mousewheeling my day away? Why is a person's location exclusively tied to their communicator? In Star Trek it is frequently seen that when a crew member wants to avoid being tracked, they'll leave their communicator somewhere (quarters, corridor etc) which throws the computer and ship's security off their trail.  However, the entire interior of the ship is under constant surveillance by the internal sensors. Barring damage to the ship or sensors, or some space phenomenon causing radiation X to create interference, why aren't these internal sensors able to continue tracking every person on board regardless of where their comm-badge is? In the worst case, they should be able deduce who the errant individual is by simple subtraction: "I can see where all the other comm-badges are, so subtract them and the remaining life form must be the person I am looking for." But this never seems to be done either.  Is Star Fleet security really so inept or is there some other limitation in play that is never mentioned? How can I visualize or simulate the effect of different focal lengths? I have seen many camera review sites illustrate the effect of using different focal lengths on the same photograph using frames. There are also similar illustrations to compare different sensors (). I find this kind of visualization to be very useful in comparing the actual effect of the longer focal length\different sensor size. Of course the ability to do a wider focal length visualization would also be equally useful, but that's not possible.  Is there any ready-made software or plugin that enables this? If not, is there any simple technique to visualize the effect of longer focal lengths on an image (one would of course have to use the zoom information in the image EXIF data to accurately represent this)? All I can think of is to use some trigonometry to do the necessary calculations for the frame sizes for cropping. Git ignore file for Xcode projects Which files should I include in .gitignore when using Git in conjunction with Xcode? How to install Android OS and Android Apps on PC ? If possible , android 4.0.3 . Custom arrangement for fields with multiple values in Drupal 7