Discrepancy between badge progress counter and editor stats

The counter for the Copy Editor badge progress is off by double digits in my profile. As you can see, I've had 100 edit suggestions accepted, but the progress counter shows 75:    Also, you can see yet a third count in my activity section:    I actually noticed the discrepancy a while back, but I was curious the badges would end up being based on the real count or the incorrect count in the progress stats, so I decided to wait until I reached 80 before posting on meta. When I reached 80, I realized that the badge progress counter is decremented when a post you've edited is removed, so I waited until I was over 80 not including removed posts. Then I waited until I was well above that threshold, just to be sure.   Based on the rep reversals in my profile, only 9 of the 100 posts I've edited have been removed. The 98 in the activity log makes sense, because I've seen that those entries go away when the post they refer to is deleted, so the number is the total number of edits (accepted and rejected) minus the number removed. There's one extra (100 approved + 6 rejected - 9 removed = 97, but the activity section's counter shows 98), but I'm sure there's a simple and logical explanation.  However, I can't explain why the badge progress counter only shows 75 when I have 91 accepted edits that haven't been removed. I'm not sure how rollbacks affect the count, but I find it unlikely that more than 16 of my edits have been rolled back. I'm not aware of any except one that I rolled back myself after realizing it was a mistake, even though it was approved.  Also, as of this writing I don't have the Strunk & White badge, even though I passed 80 in the number of approved edits minus the number removed about a week ago. So, it appears that the badges are based on the same query that produces the flawed badge progress counter.  [I edited the title to make it clear to the tomato-throwers that this was intended as a "I noticed a discrepancy, why don't the numbers add up?" question, not a "Hey, no fair, where's my badge??" question. The discrepancy was explained in the accepted answer.]


How to install Windows 8 without the setup DVD that came with my notebook?

Possible Duplicate:          Recently I bought an Asus u32vj and decided to change from its hdd to a smaller capacity ssd. The  problem is I can't figure out how to migrate Windows 8 to the ssd. Actually I don't need to migrate, I just want to install Windows 8 which came with my notebook without the DVD. I have the recovery installer residing on the recovery partition.   The recovery tool suggested in the manual "A recovery burner" is missing.  How can I fix my problem?


"Congratulations! Thanks to your efforts you have earned" box appears on top of the hat picker

Normally the hat picker is on top of the "Badges" box in your activity tab, but when there's a "Congratulations" there, the hat picker appears behind it:    Also, as @MikeMiller mentions, the hat disappears after you click "let us pick".


Adding more samples to ordinary regression is equall to ridge regression

I am a beginner in machine learning. I have a question why adding more samples to a data set is equal to adding regularization term to the  loss function? (In other words why can I add more samples to my data set and solve OLS instead of solving ridge regression?)


MySql ranking system with multiple categories

On my game ranking system, users can rate the games using three categories (eg: cat1, cat2, cat3).  table game_ranking | id | user_id | game_id | cat1 | cat2 | cat3 | | 1  | 1       | 1       | 5    | 7    | 8    | | 2  | 1       | 2       | 10   | 8    | 5    | | 3  | 2       | 2       | 1    | 4    | 5    | | 4  | 3       | 1       | 5    | 7    | 8    | | 5  | 4       | 1       | 2    | 3    | 6    | | 6  | 7       | 3       | 6    | 6    | 3    | | 7  | 9       | 3       | 3    | 10   | 7    |   The ranking must be based on the total of the sum of each category column.  Eg: game_id 2 score = cat1(10 + 1) + cat2(8 + 4) + cat3(5 + 5).  So game_id 2 score is 33.  If two or more games have the same score, the game that has the highest number of votes should be on top of the other.  I need a MySql query to create the ranking based on these criterias I mentioned above.  Thanks!


How to update my blender without losing all my settings on mac

How do i update to blender 2.91 on Mac i currently have version 2.83. How do I update to version 2.91 useing Homebrew? without overwriting


I have a some content in my visualforce page which I am rendering as a PDF. I am unable to display the content of my VF in tabular format. below is the code which I am trying to get as a PDF file:     <apex:repeat value="{!interviewSkillReviews}" var="interview">           <apex:pageBlockTable value="{!interview.Skill_review__r}" var="skillreview">

    <apex:column value="{!skillreview.Skill__r.Name}"/>

     <apex:column value="{!skillreview.Level__r.Name}"/>

      <apex:column value="{!skillreview.Skill_Level_Description__c}"/>

           </apex:pageBlockTable>      </apex:repeat>   But when I render this as PDF I do not see the content in table being displayed. It just appears as plain text. Please suggest a way to display those <apex:columns> in a table.


I am trying to recover data from a bad Seagate 1TB hard drive in a 2010 iMac. One day the iMac wouldn't boot (stuck at gray screen on startup). I removed the hard drive from the iMac and connected it to a MacBook using a 3.5" HDD to USB adapter. The hard drive wouldn't mount but it did display in Disk Utility that that there were 2 partitions on the disk. I tried to run Disk Warrior and it showed thousands of errors but still wouldn't mount. At this time the hard drive only show one partition in Disk Utility. Next I tried putting the hard drive in a desktop PC and running Spin Rite - which then gave me several division overflow errors (even with running Spin Rite with a newer version of DOS). The SMART status on the drive reports that the drive has had failures and HD Tune referenced the drive had once hit 59 degrees celsius. Disk Utility gives me the following message when running a pair: Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.  Overall, the hard drive spins up and sounds OK - there are no clicking noises but the hard drive won't mount and displays as a light gray "Macintosh HD" in disk utility. Any tips or advice on how to recover data on this drive would be greatly appreciated! Are there any other tools I can try before calling it quits on this drive?


LIKE query not working, it just output blank.    $stmt = $dbo->prepare("SELECT * FROM hotels WHERE h_country=:c LIKE '%m%'"); $stmt->bindValue(":c", "malaysia", PDO::PARAM_STR); $stmt->execute();


Correct way to change default font in Windows 8?

I had been enjoying Windows 8 for the last couple of months on my desktop and laptop, but now it seems MS did actually do something really stupid in this OS that bothers me. You can't change the default system font... Not via the control panel or other "regular" method anyway.  Looking it up on the net, I fount two possible ways, both involving registry edits. One method changes a couple of registry keys in     HKCU\Control Panel\Desktop\WindowMetrics   but they are in binary and so it seems weird to edit them. Also there are quite a few keys to edit.  Other tutorials change MS Shell Dlg and Ms Shell Dlg 2 in     HKLM\Software\Microsoft\Windows NT\CurrentVersion\FontSubstitutes   Method 2 seems a lot easier but a lot of people also report it doesn't work.  Are there any more alternatives?


here is my best attempt to explain my doubt: Look at the following case, when we have a fractions like 2/2 + 2/2 we don't solve them like 4/4 instead its 4/2 we don't increase the denominator.  If some alien saw this he would be why not add the denominator?, fortunately I know the reason, the denominator represents how many times an object has been divided in pure math the object are just numbers, since the amount of pieces something has been cut into does not add up by adding the pieces of some other object therefore the denominator does not add up.  As you can see from my above explanation the rules of not adding denominator makes sense but to someone who does no the explanation for not adding the denominators will just view them as mere rules.  That is the problem with my doubt, 2 x 2/2 to solve this we need to remove "2" from the numerator and the denominator but we don't divide both the "2's" only one, Now like for not adding the denominators there is some explanation, which I don't know.  My other question, we know that 4/2 is 2 and 2 x 2 = 4, so when we do 2 x 2 / 2 we don't divide both the numbers instead only one of them and arrive at the same answer, how?  These "reasons" I believe are never taught in school they are treated as rules, this is causing serious problems while solving questions because every concept in math depends on my understanding of these.


I discovered a sequence that should converge to $\pi$ , but how to prove that it really converges to $\pi$?

So yesterday I took paper and pencil and did some constructions of geometrical nature and I discovered a sequence that should converge to $\pi$.  It goes like this:     Define $a_1=\sqrt{2}$ and for every other $n \in \mathbb N$ define $a_n=\sqrt{2+a_{n-1}}$. Define $S_n=2^n \cdot \sqrt{2-a_{n-1}}$. Then we should have $\lim_{n \to \infty}S_n=\pi$.   This formula (more correctly, sequence) can be seen  and is labeled with number (66) so I did not discover anything new.  I found this sequence but I did not rigorously prove that it converges to $\pi$, the story is that I saw a pattern for the first few natural numbers and then defined the expression for general $n$ and when I did that I found the sequence on the above linked page.  My question would be:     In which way would you prove that this sequence converges to $\pi$?


I would like to produce whitespace as wide as a particular character. One trick I have figured out is to use {\color{white} x} (if for example this would produce whitespace as wide as the character x) with the color package. However, this is problematic, as when I create a pdf (e.g. using pdflatex), the character will still be there, so that if a user copies some text they have selected including the "invisible" character, they will also copy that character. Are there better methods to accomplish what I want?


How do I correctly backup android apps with a PC for a factory reset?

I want to reset my phone. I want to preserve some apps state across the reset. I don't want to use third party software. Which folders do I have to copy?


Can I direct audio from a single app to a particular output?

For example, I would like for iTunes to play thru my iMac's speakers, but iChat's notifications thru my headphones.


Let $W$ be a standard, one-dimensional Brownian motion and $0 < T < \infty$. Show that  $$\lim_{\beta \to \infty} \sup_{0\leq t \leq T} |e^{-\beta t }\int_0^t e^{\beta s } dW_s| = 0$$ a.s.


How to make a meta box field a requirement

I'm building a plugin that has a meta box. Some of the fields in the meta box are required. Is using jQuery the only method for achieving this? Can I require that a field is filled in using PHP?


How do I show this $\cos^2(\arctan(x))=\frac{1}{1+x^2}$

How do I show this?  $$\cos^2(\arctan(x))=\frac{1}{1+x^2}$$  I have absolutely no idea. Thank you.


Shotwell not writing metadata tags to images

I've checked the box in preference to save metadata to images, but it's not saving tags or titles to the jpg files.  Anyone else having this problem?


Should I have a recommendation letter form my boss in industry?

Background: In the next few months I will be applying for graduate school for a PhD program (or Master's if I have to go that way first). The degree will be Electrical Engineering focusing on Computational Electromagnetics (CEM). I have heard that the letters of recommendation are crucial, and should absolutely be written by people that personally know your work. Right now I have two candidates willing to write for me: (1) a tenure-track professor for whom I have worked for 2 years and although her expertise is not in CEM, the work I do for her requires a similar skill set. (2) a tenured faculty who has had me in a class, is a nationally recognized expert in CEM, and has worked on a project with me outside of school (specifically he was consulting where I was working over the summer).  Issue: For the third letter, the most readily available option would be my boss at my summer internship. He has known me for about 2 years now, he is a double major in Math and Comp Sci, and has a Masters in Comp Sci. He has also been doing work in CEM for a few years so he is an expert in that area as well. However, he does not have an appointment at a school right now (although he surely could), but instead works in industry. Keep in mind I will be applying to programs that are top 50-30 overall, but are top 25-10 in CEM (i.e. Ohio State, UTEP, U of Houston).  Would he be considered a strong letter writer, or should I seek another letter from a professor (who may not know me as well and/or may not be an expert in CEM)?  Note: although my internship is in industry, my job is to do research and development, so I am not questioning whether my background is strong, I am questioning whether the third writer's profile would be considered strong/adequate by the committees.


If $X$ takes on a Gamma Distribution, how can I find $X^2$, $X^3$, etc?

I am trying to take consecutive powers of a Gamma Distribution. For example, if   $X \sim  \textrm{Gamma}(k, \theta)$,   I would like to find $X^2$, $X^3$, and in general $X^m$ for $m>0$.   The pdf using the shape-scale parametrization is  $f(x;k,\theta) =  \frac{x^{k-1}e^{-\frac{x}{\theta}}}{\theta^k\Gamma(k)} \quad \text{ for } x > 0 \text{ and } k, \theta > 0$.  I have started to do this by working by the following:  $P(X^m \leq x) = P(-\sqrt[m]{x} \leq X \leq \sqrt[m]{x}) = \int_{-\sqrt[m]{x}}^{\sqrt[m]{x}} \frac{t^{k-1}e^{-\frac{t}{\theta}}}{\theta^k\Gamma(k)} \,dt$.  Then, $\quad f_{X^m}(x) = \frac{d}{dx}\int_{-\sqrt[m]{x}}^{\sqrt[m]{x}} \frac{t^{k-1}e^{-\frac{t}{\theta}}}{\theta^k\Gamma(k)} \,dt$ $\quad$  which by the Fundamental Theorem of Calculus equates to:  $\dfrac{(\sqrt[m]{x})^{k-1}e^{-\dfrac{\sqrt[m]{x}}{\theta}}}{\theta^k\Gamma(k)}\cdot(\sqrt[m]{x})'-\dfrac{(-\sqrt[m]{x})^{k-1}e^{-\dfrac{-\sqrt[m]{x}}{\theta}}}{\theta^k\Gamma(k)}\cdot(-\sqrt[m]{x})'$.  After this, I am stuck because there are many different cases to consider, such as when $m$ is an integer, etc.   Could anyone tell me if my strategy is correct? Thanks!


How to dentify what files or directories are modified when a debian package is installed?

If I do a sudo apt install example-package -y then the apt program will pull the deb file from its repo and install it in the system.  Some program will have conf files inside /etc folder and its executable file will be in /bin and some other file may or may not be in /usr/share/example-package folder.  Is there anyway to get the list of created files / folders that took place during such an installation?


I want to get the list of python in the below format

I have a list like this list=['a, b, c, d', 'e, f, g, h','i, j, k, l']  But i want to have a list like below way target_list=[               ['a','b','c','d']               ['e','f','g','h']               ['i','j','k','l']            ]  Please help me to solve this. I am new into python.


Where should an adverb come in a sentence?

If both of the sentences below are correct, does the position of the adverb change the meaning (slightly), or perhaps the register of the sentence?         The superior man thinks always of virtue.   The superior man always thinks of virtue.


Casting Booming Blade with an improvised weapon

In Adventurer's League, can the spell Booming Blade be casted using an improvised weapon (a shield)?


Find the minimum value of $\frac{1}{a^3(b+c)} + \frac{1}{b^3(a+c)} + \frac{1}{c^3 (a+b)} $

Let $a,b,c $ be positive reals such that $abc=1$. Find the minimum value of $$Q = \frac{1}{a^3(b+c)}  + \frac{1}{b^3(a+c)} + \frac{1}{c^3 (a+b)} $$  My attempt:   Let $P = 2(ab + ba + bc)$.  Then $PQ > \dfrac{1}{a^2} + \dfrac{1}{b^2} + \dfrac{1}{c^2} \geq  3 $, by AM-GM inequality.   Also, $P = 2(ab + ba + bc) = 2(\dfrac{1}{c} + \dfrac{1}{b} + \dfrac{1}{a}) \geq 6 $, by AM-GM inequality.  $P(1,1,1) = 6 $ and $Q(1,1,1) = \frac{3}{2}.$ Could anyone advise me how to show absolute minimum of $Q$ is $\frac{3}{2}$ ?  Hints will suffice, thank you.


I can't see install Ubuntu alongside windows 10

When i try installing Ubuntu alongside Windows, I see only 2 options: One is to erase all data and install Ubuntu, and the other one is "Something else". I can't see an option to install alongside Windows 10.


How can I find out what category a merchant falls into for my credit card's cashback program?

For credit cards that give different amounts of cash back based on the category:  How can I go about figuring out how my purchase from some particular merchant will be categorized before I make a purchase from that merchant? Is there an easy way (ideally online)?  Note: I thought this was obvious, but I am not asking how credit card companies (or merchants) determine the purchase categories. That's I'm asking if there is any way for me to figure them out before making a purchase. So -- no, the duplicate isn't a duplicate...


How can I enumerate all patterns of factorial?

I'm trying to make a function that will calculate all distances of each route. For example: A is at (0,0), B is at (1,0), C is at (0,1). Then there are 6 route to go through all towns like ABC or ACB or BAC or BCA or CAB or CBA. Here, my question is, how can I enumerate all patterns of factorial like ABC,ACB,BAC,BCA,CAB,CBA. It would be easy if it's 2! or 3!, but if for example 8!, it would be super hard. If you know, I want to know  your advice!


How can $ i $ be distinguished from $ - i $?

Mathematicians designate one solution to $x^2 = -1$ as $i$ and the other as $-i$.  Would anybody notice if we switched their identities?  Any polynomial $p(x)$ with a complex root will also have its conjugate as a root.  Is there any equation in real numbers with a complex solution that does not have its conjugate as another solution?


What is the difference between reg and wire after synthesizing?

Assuming i have these two codes:  module wire_example( a, b, y);   input a, b;   output y;    wire a, b, y;    assign y = a & b;  endmodule   and the second one is:  module reg_combo_example( a, b, y); input a, b; output y;  reg   y; wire a, b;  always @ ( a or b) begin      y = a & b; end  endmodule   my question is what is the difference in the net list, both of them will have an gate, but will the module with reg y will have a flip flop or a latch to hold the data while wire y won't have any latch?


Can I still travel back to Canada by using the new passport with no document and the old passport with valid visa and study permit?

Just like I said, I have two passports right now. My old passport with valid visa and study permit is about to expire at september this year. Since then, I applied for a new passport to replace my old one. I am just wondering that if I can still use the visa and study permit on my old passport with my new passport to re-enter Canada before the expired date of my visa?


$$f(z)=z^{z^{z^{.^{.}}}}$$ $$for\space z \space \in C\rightarrow C$$  Can we define the range of this function(convergence-divergence specifically) without taking help from fractals? I checked out some articles but I couldn't find any exhaustive theory for the complex domain. Any help will be appreciated :)


On Linux file manager, I think Dolphin (not sure right now, sorry) I can open Konsole just hitting F4. I would like to have the same on MacOS/Finder, openning Terminal instead. Is it possible?  I'm on El Captain.


Which Latest Ubuntu OS Version is Best for a Laptop with 3GB RAM?

I want to upgrade my laptop OS from Windows to Linux, for Programming and Gaming Purposes I have a Laptop with Below specs Intel(R) Pentium(R) CPU P6100 @ 2.00GHz 2.00GHz 3GB RAM Which Latest Version of Linux Should I Install?


In how many different ways can we place $8$ identical rooks on a chess board so that no two of them attack each other?  I tried to draw diagrams onto a $8\times8$ square but I'm only getting $16$ ways.  Does that sound right?  Thanks for the help!


Dividing a large integer by 10 and truncating the decimal is not working in python

The following program runs into an error because when I divide the large integer by 10 and truncate it, Python does weird math and returns a different number. # Program to add the digits in an integer # eg. 463728 would equal 30 ( 4+6+3+7+2+8 )  the_sum = 2**1000  running_tot = 0 sum_length = len(str(the_sum)) # to calculate the length of the integer  i = 0 #initialize iterator  while i < sum_length:     remainder = the_sum % 10     # Find out the last no. in int.     running_tot += remainder     # adds the last no. to running total     the_sum = int(the_sum / 10)  # truncates the last no. for original number     i += 1                       # increment iterator    print(running_tot)  I would like to know why Python does this?


Evaluate $\sum^\infty_{n=1} \frac{1}{n^4} $using Parseval's theorem (Fourier series).   I have , somehow, to find the sum of $\sum_{n=1}^\infty \frac{1}{n^4}$ using Parseval's theorem.  I tried some things that didn't work so I won't post them.  Can you please explain me how do I find the sum of this series using Parseval's identity?  Thanks


What is the difference between crontab -e and nano /etc/crontab? Do they point to the same thing?


For example, when we write $\lim_{x\rightarrow \infty} f(x)$ - which infinity is meant and why? Countable? If uncountable - which and why?


The space $C[a,b]$ with $\|f\|:=\int_a^b |f(x)|d(x)$ is a normed space but not a Banach space

Let $-\infty\lt a\lt b \lt \infty$. Let $C[a,b]$ is space of continuous functions and a function $\|.\|:C[a,b]\to R$ is given by $\|f\|:=\int_a^b |f(x)|d(x)$  a). Show that $\|\cdot\|$ is a norm in $C[a,b]$  b). Show that $C[a,b]$ with this norm is not a Banach space.  Well the 1st question is kind of easy. Non-negativity, Homogenity, and Triangle inequality is easily proven. At the 2nd question I have a problem.   I know the $$C[0,1]$$ space with Norm $$\|f\| = \int_0^1|f(x)|d(x)$$ is not complete that means not Banach-Space. But how do I prove the generality?   Does anyone has a suggestion?  Thanks


Prove that identity is unique in a group

I was given a group and I have to prove   a) If $f\cdot g = f$ or $g\cdot f = f$ then $g = 1$.  Is it right to do it using just Identity axiom of group:  $f \cdot g = f = f \cdot1 \Longrightarrow g = 1 ?$  Thanks.


I have a MySQL Community database on a remote server and I am trying to get Microsoft Access to read data from it. This data is sensitive. The problem is, MySQL doesn't care about the username that I give it in the .DSN file. It lets me read the ENTIRE database no matter what! How do I get it to actually check the username that I give it in the .DSN file?  edit: I'm not a DBA, I'm some intern who is over his head. Please don't assume that I know anything about anything  :)


Can 'AMD-only' RAM really be restricted to AMD chipsets, and if so, why?

I was browsing for a RAM upgrade earlier for my system, and came across 'AMD-only' RAM (aka, RAM that only works on AMD chipsets).  This RAM can , and seems to be slightly cheaper than 'normal' RAM.  The RAM prompts a question: is this RAM really restricted to AMD chipsets?  When considering RAM for a system, there are certain considerations to make such as:   Speed (1066MHz, 1600MHz, etc); CAS (latency, lower is better); Generation (DDR2, DDR3, DDR4, etc)   However there is usually no such consideration as chipset compatibility. Sure, it's possible to guarantee that a given stick of memory will work if it's within the bounds of the chipsets listed in the information given by the seller/manufacturer.  For instance if a series of chipsets supported RAM between 1600MHz and 2400MHz, with 9-12 CAS, and on DDR3, it would be possible to list a product as being fully compatible with that series of chipsets if the said RAM was 2000MHz, 10 CAS, and DDR3.  I suspect that's partially the story here. However, is it possible at all for a given stick of memory to be 'AMD-only' or 'Intel-only', and if so, how?


SELECT rows with the second highest value in a column

Let's say I have a table similar to the following:  Item         Description            Time -----        -----------            ----- ItemA1       descript               08-16-2013 00:00:00 ItemA2       descript               08-16-2013 00:00:00 ItemA3       descript               08-16-2013 00:00:00 . . ItemAN       descript               08-16-2013 00:00:00  ItemB1       descript               08-13-2013 00:00:00 ItemB2       descript               08-13-2013 00:00:00 ItemB3       descript               08-13-2013 00:00:00 . . ItemBN       descript               08-13-2013 00:00:00 . . . ItemX1       descript               01-13-2012 00:00:00 ItemX2       descript               01-13-2012 00:00:00 ItemX3       descript               01-13-2012 00:00:00 . . ItemXN       descript               01-13-2012 00:00:00   Groups of items are added periodically. When a group of items is added they are all added with the same "Time" field. "Time" essentially serves as a unique index for that item group.  I want to SELECT the group of items that have the second highest time. In this example my query should pull the "B" items. I know I can do max(time) to SELECT the "A" items, but I don't know how I would do second last.  My "Time" columns are stored as TIMESTAMP if that means anything.


Can cookies collect my entire browsing history?

Can any cookies collect my entire browsing history when they're dropped? I use CCleaner to remove all cookies after I close browser, exceptions are the sites I have accounts.


How can we determine if an equation represents a travelling wave?

Are there any particular conditions for a wave equation to represent a travelling wave? If yes, are they more than one? As an example could you please explain if $y=\dfrac{1}{x+vt}$ represents or does not represent a travelling wave?


everyone!  Just started studying Java and can not understand one moment, for example:  Set<Integer> intset = new HashSet<Integer>();  (1)  HashSet<Integer> intset2 = new HashSet<Integer>(); (2)   What is the difference between these examples? Or they are the same? (1) example looks like up-casting, so it means that we have HashSet with only Set(interface) methods? Thank you for your reply!


Web-published play in a world with the technology to reanimate arbitrary humans who have died

I first read this around 2011 or so. It was published online and followed the main character as he resurrected his dad, two hundred years after he died in his sleep. We eventually find out that the father is the first person to be involuntarily brought back to life (since he died before anyone thought of asking about that), and the world is watching to see how he reacts.  Other tidbits:   There's a fourth-wall-breaking character in the play, possibly a robot or computer of some kind, that defines a few terms when they are first used. People can choose to exist in a digital form where time passes more quickly. The protagonist mentions that he's experienced thousands of years of subjective time even though only two hundred years have passed. There's a group of people who have declined for (I believe) religious reasons to have themselves brought back to life after death. (This is only mentioned in passing.) The most touching moment (for me, anyway) was when the protagonist says "I've waited 200 years for this" and gives his father a big bear hug. (I teared up a bit just writing that sentence.) The dad's resurrection is exactly 200 years to the day after his original death, at least in part for sentimental reasons. He is initially placed into a simulation of his old house. He notices that the water heater suddenly works (it had been broken two hundred years earlier), and the narrator gives an aside to the audience acknowledging that he made a mistake by not including that in the simulation. The father asks to see their old house. He can see an image of the house in real-time but the windows are darkened for privacy (someone else lives there now). Presentation-wise, the story was told as a dialog; the character's name was in a colored rectangle (different colors for different characters) and the text was set next to it. This was most likely a big HTML table.


babel, beamer problem: refuse name change to part

I wanted to change the name in my beamer slide from Part to Theme.  So in the Google BOK if found:  \renewcommand*{\partname}{Theme}   I could not get to work.  Then I start to switch off (%) everything that I added and found that:  \usepackage[english]{babel}   is the holder of the key.  An MWE:  \documentclass[compress,infolines,smaller]{beamer}  %\usepackage[english]{babel} \useinnertheme[shadow=true]{rounded} \usecolortheme{beaver}  \renewcommand*{\partname}{Theme}   \begin{document}  \AtBeginLecture{ \begin{frame} \titlepage \end{frame} }  \part{Title} \begin{frame}<beamer> \partpage \end{frame} \section{test1} \begin{frame} Test \end{frame}  \end{document}   Is there a way to get passed this?


I'm trying to visualize a table inside a fancyhead.  This table has only the yellow central column. The problem is that when I go to compile and open the document with Acrobat DC, I don't see the top line of the cell.  This is my markup:  \documentclass[a4paper,12pt]{article} \usepackage[utf8]{inputenc} \usepackage[demo]{graphicx} \usepackage[hidelinks]{hyperref} \usepackage{array} \usepackage{lastpage} \usepackage{lipsum} \usepackage[table]{xcolor}% http://ctan.org/pkg/xcolor \usepackage{fancyhdr} \usepackage[hmargin=2cm,top=4cm,headheight=65pt,footskip=65pt]{geometry}  \setlength{\parindent}{0.95cm}  \pagestyle{fancy} \renewcommand{\headrulewidth}{0pt} \fancyhead[CE,CO,LE,LO,RE,RO]{} %% clear out all headers \fancyhead[C]{%     \begin{tabular}{|m{3.0cm}|m{10.0cm}|m{2.5cm}|}         \hline         codice di riparto &         \cellcolor{yellow}\centering         TITLE \\          vediamo cosa c'è\\ ma poi cosa succede &         \centering         \tiny{Pag. \thepage\ di \pageref{LastPage}\\               Data: 17/05/2013\\               Rev. 0}\tabularnewline         \hline     \end{tabular} } \thispagestyle{fancy} \begin{document}  %\chapter{Chapter title} %% add this if you want the fancy style also on the first page of a chapter: \section{Section title} \subsection{non lo so} \lipsum[1-10] \end{document}   And this is the rendering of the table (wrong):   I wonder if I forgot something to define the table, or the color of its cell.


I am keeping my dotfiles under version control and the script deploying them creates hard links. I also use etckeeper to put my /etc under version control. Recently I have gotten warnings like this:  warning: hard-linked files could cause problems with bzr   A simple copy (cp filename.ext filename.ext) will not work:  cp: `filename.ext' and `filename.ext' are the same file   Renaming/moving a file - except across volumes - also doesn't break the hard-link.  So my question is: is there a way to break a hard-link to a file without actually having to know where the other hard-link/s to that file is/are?


Where is the password stored? How do I obtain a new one?

I have installed  Drupal Commons 6.x 23, but I forgot the username/password I used for the account I created.  Where is the information stored? How can I get a new password?


Does re-heating something "reset" the spoil timer?

I cooked a lot of pasta sauce a few days back, and have much of it in my fridge. I intent to use it all shortly, and would prefer to not freeze it.  If I heat it back up in a pot, and let is cook all the way through, does this "reset" the time before it spoils?  I fully understand the consistency will change, and I'm OK with that - I do like a thicker sauce.  Soliciting answers specific to this question.


How to calculate image dimensions from camera parameters?

I'm using Raspberry Pi Camera v1 with the following parameters  Sensor size: 3.67 x 2.74 mm (1/4" format) Pixel Count: 2592 x 1944 Pixel Size: 1.4 x 1.4 um Lens: f=3.6 mm, f/2.9 Angle of View: 54 x 41 degrees Field of View: 2.0 x 1.33 m at 2 m Full-frame SLR lens equivalent: 35 mm Fixed Focus: 1 m to infinity   The default image dimensions is 1920 x 1080 px. How to determine the image dimensions in metric units based on the given parameters?


Different energies for particle in a box from $0$ to $L$ and $-L/2$ to $L/2$

Solving the particle in a box problem considering boundaries 0 and L leads to the energy equation $$\frac{n^2\pi^2\hbar^2}{2mL^2}$$ but doing the same with center at the origin (from -L/2 to L/2) I get $$\frac{2n^2\pi^2\hbar^2}{mL^2}$$ shouldn't I get the same answer? I used  the solution $$A\sin (\frac{\sqrt{2mE}}{\hbar}x)+B\cos (\frac{\sqrt{2mE}}{\hbar}x)$$ by substituting $f(-L/2)=f(L/2)=0$ and considering symmetry for cos and sin, $$-A\sin(\frac{\sqrt{2mE}}{\hbar}\frac{L}{2})+B\cos (\frac{\sqrt{2mE}}{\hbar}\frac{L}{2})$$ $$A\sin (\frac{\sqrt{2mE}}{\hbar}\frac{L}{2})+B\cos (\frac{\sqrt{2mE}}{\hbar}\frac{L}{2})$$ subtracting both equations $$2A\sin (\frac{\sqrt{2mE}}{\hbar}\frac{L}{2})=0$$ where $$\frac{\sqrt{2mE}}{\hbar}\frac{L}{2}=n\pi$$ I saw a couple of solutions where they added both equations and used $$\frac{\sqrt{2mE}}{\hbar}\frac{L}{2}=\frac{n\pi}{2}$$ for $\cos u=0$, but for even $n$, $\cos u=\pm1$ so I think it should be $$\frac{\sqrt{2mE}}{\hbar}\frac{L}{2}=\frac{(2n-1)\pi}{2}$$


What happened to Wolverine from the new Days of Future past time line?

At the end of X-Men: Days of Future Past, we see Wolverine      wake up in a new timeline.   After a few “surprises”,      he sees Professor X, and Professor X senses that this Wolverine is not the Wolverine from his timeline.   What happened to the Wolverine in this timeline?


Prove that $f \ast g$ is continuous and bounded if $f\in L^1(R^n)$ and $g\in L^\propto (R^n)$

My Engliah is no so good and it is my first time to use this website, so I apologize for it if I didnot make myself clearly:)


Least-action classical electrodynamics without potentials

Is it possible to formulate classical electrodynamics (in the sense of deriving Maxwell's equations) from a least-action principle, without the use of potentials? That is, is there a lagrangian which depends only on the electric and magnetic fields and which will have Maxwell's equations as its Euler-Lagrange equations?


when p is sum of two square integer, prove (a/p) which is legendre symbol = 1

Let a,b be integers and p be an odd prime. if $p$=$a^2+b^2$ and a is odd, prove $(a/p)$ which is legendre symbol = $1$   what i have done is that :   because p and a are odd, b must be even and p is the form of $4k+1$ ($k$ is integer)  and after this, how to prove it ?


How can I copy a file from the machine I'm ssh'd into?

I use my own laptop running Ubuntu to ssh to my school server (which is running another Linux distribution).  I do my assignments remotely like this, but I have an habit of putting all my files on Dropbox so that I can gain access of them anytime anywhere.  Question is:  for instance, I made a file named blah.cpp on the school server, thru ssh on my laptop, now I want to copy this file to my local machine into the Dropbox folder. What is the command to do that?   I've done the research and seems like scp and sftp are the solution but I find it hard to understand what exactly I should do with them.


Forgot Password: what is the best method of implementing a forgot password function?

I'm wondering what the best method is for creating a forgot password function on a website. I have seen quite a few out there, here are a few or combination of:   passphrase question / answer (1 or more) send email with new password on screen give new password confirmation through email: must click link to get new password page requiring user to enter a new password   What combination or additional steps would you add to a forgot password function? I'm wondering about how they request the new password and how they end up getting it.  I'm operating on the principal that the password cannot be retrieved; a new password must be given/generated.  Edit I like what Cory said about not displaying if the username exists, but I'm wondering what to display instead. I'm thinking half the problem is that the user forgot which email address they used, which displaying some sort of "does not exist" message is useful. Any solutions?


Verify the identiy, (cos(x+h) - sin x)/h = cos x * ((cos h - 1)/h)- sin x * (sin h /h)

Verify the identity:  $$\frac{(\cos(x+h) - \cos x)}{h} = \cos x  \left(\frac{\cos h - 1}{h}\right)- \sin x  \left(\frac{\sin h }{h}\right)$$  =(Cosxcosh - sin x sin h -cos x)/h.   I can't think of where to go from here.  Thanks


How i can restrict certain file extension upload via ssh?

How can I restrict certain file extensions and file upload size via SSH?  I am using Ubuntu 12.10 default installation and Open-ssh server.


Looking for names of grandparents in Magdeburg, Germany when father born 1896?

I am looking for my father Herman Albert Zimmerman, who was born Oct 13, 1896, in  Magdeburg, Germany.  I found his  and  draft papers and have done much research with census and, on the Saxony sites and found nothing more about his parents. I am in the process of backtracking his steps where he boarded the Arnoldus Vinnen ship.  I believe, in 1916-1917 I have the newspaper article where he was talking to congressman Donn Bonker and have also found a book () to read more about the ship's purpose and sailing days.  Nothing in his adventures tells me who my grandparents are. I do know that he was born and his name and I remember seeing a picture of him with another boy and his parents, but no name on the back of the picture.   I do know he said he was of Lutheran faith. That is all I do know from his own words. I am very proud of my father he was a good man with a good heart. Thank you all for helping me. I gave my child his last name to carry his name forward.  My question is now how do I find my grandparents in Magdeburg and or parishes where there might be a birth record, or census in Germany?


Any slang word for "debt-collector"?( specially among gangsters & criminals!)

According to dictionaries, A collection agency, also known as a debt collector, is a business that pursues payments of debts owed by individuals or businesses.  But I have seen in movies that criminal organizations ( Mafias) hire some obnoxious men as ( illegal) debt-collectors whose job is to collect the payments by force and violently, if necessary!  I'd like to know if there is any slang word, term , phrase or idiom among those Mafias members for calling these "debt-collectors" or not!   PS:  1-I have found a British English word "bumbailiff" but it refers to officers whose job was collecting debts,in the past;  so I'm sure I cannot use it for those men hired by Mafias as debt-collectors!   2-In the duplicate question, Morteza is looking for the "debt-collector", but I am looking for its slang equivalent! So please open my question!


I know that, $$\sqrt{25}=5≠-5$$  But, in quadratic equation we write $$(2ax+b)^2=b^2-4ac$$     $$(2ax+b)=±\sqrt{b^2-4ac}$$   Why?? We must write $±$, and What is the mathematical mystery here?


a few, several, and many before hundred / hundreds of

Please examine the following phrases:   a few hundred books a few hundreds of books several hundred books several hundreds of books many hundred books many hundreds of books   I think #1, #3, and #6 are correct. What about the others? Also, it seems to me (although I'm by no means certain) that "many" patterns differently from "a few" and "several." If that's the case, do you have an explanation?


Deleting leftovers from audio troubleshooting

fairly new to Ubuntu and I've spent the last couple days working to get everything set up and running as smoothly as I can. I wasn't getting audio through my motherboard sound-card, and was following  troubleshooting guide, which ended up solving my problems. However, I now have a bunch of programs that weren't there previously. My question is do I need them, and if not, how do I go about removing them?   They are as follows -   Echomixer Envy24 Control HDAJackRetask HDSPConf HDSPMixer Rmedigicontrol   I hadn't used any of these during my audio troubleshooting, (only used Pavucontrol in the end) but figured I'd ask first.  I have also tried purging a few through terminal commands by their name, but would receive "Unable to locate package." Not sure what to do.     I'm on 18.04.1, if that's relevant.


Is there any software recover files without format the memory card when any memory card is in raw format (showing dialog box format your drive) ?


Closed form for the area of a convex cyclic n-gon, given the set of edge lengths

Let's say we are given a set of positive reals, and we're told that these are the edges of a convex  $n$-gon, and we must compute it's area.   For $n = 3$ there is the famous Heron's formula:  $$A = {1\over 4}\sqrt{4a^2b^2 - (a^2 + b^2 - c^2)^2}$$  For $n = 4$ there is Brahmagupta's formula:  $$A = {1\over 4}\sqrt{(a^2 + b^2 + c^2 + d^2)^2 + 8abcd - 2(a^4 + b^4 + c^4 + d^4)}$$  Is there a generalization for arbitrary $n$? Does it even exist?


What's the exact difference between: in, under, below?

What's the exact difference between:        He is UNDER the water.   he is BELOW the water.   He is IN the water.      The answer received states not quiet clearly that in most cases I can use either, IN  and ON. A clearer explanation would be much appreciated, also,  can I say: The man is BELOW the water. If the answer is no, why not?


Hamiltonian definitions in the presence of boundary term

Consider a Lagrangian of the form  \begin{equation} L(q,\dot{q})=L_1(q,\dot{q})+\frac{d L_2(q,\dot{q})}{dt} \end{equation}  I understand that $\dot{L_2}$ does not modify the equations of motion, however, it modifies the boundary conditions needed to fulfill the variational principle $\delta L=0$.  Now consider the Hamiltonian for this Lagrangian \begin{equation} H=p\dot{q}-L \end{equation} where  $\pi=\frac{\partial L}{\partial \dot{q}}$, as usual. Since both formulations share the same dynamics, I expect the Hamilton's equations \begin{eqnarray} \frac{\partial H}{\partial q}=-\dot{\pi} \\ \frac{\partial H}{\partial \pi}=\dot{q} \end{eqnarray} to give the same dynamics. However, I do not have a consistent argument to show why this boundary term will not modify the expression for the momentum. In particular, I have no reason to impose, for example, that $\frac{\partial \dot{L_2}}{\partial q}=0$.  Even further, If I consider this Lagrangian as a higher-derivative Lagrangian and I try to apply Ostrogradsky formalism, I will eventually realize that the non-degeneracy condition fails, i.e, $\frac{\partial^2 L}{\partial \dot{q}^2}= 0$.  So, anyone can instruct me how total derivative terms modify the definitions in the Hamiltonian? Thx in advance.


List of Figures - how to add caption label

I'm using the caption package.  In the List-Of-Figures I get only the numbers, but I also want to have the prefix. It currently looks like that:     List of Figures   1 Caption of Figure 1........1   2 Caption of Figure 2........9     And I want it to look like:     List of Figures   Figure 1: Caption of Figure 1...1   Figure 2: Caption of Figure 2...9     The same format is already used for the captions themselves.


/usr/bin/host being used in HTTP DDoS on Debian?

So I got an abuse complaint for one of my dedicated servers, running Debian 6.0  Sure enough, sometimes, top shows /usr/bin/host using a lot of CPU for no apparent reason, and netstat shows process host doing a lot of HTTP requests.  After while, my syslog even says nf_conntrack: table full, dropping packet., which i assume has something to do with this matter.  I have verified the executable /usr/bin/host using debsums, and is seems to be fine, too. The server as such is 100% updated, too.  So i am guessing something is somehow calling my host executable and coercing it to do HTTP requests for some DDoS.  I could of course simply hack together a script to killall host as soon as this is happening, but I would really like to know where the problem originates from.  I am checking the Apache logs for interesting entries around the time that host is starting to do its requestst, but haven’t found anything yet.  Anyone have a recommendation on what else to do? How can I see who and what called 'host'? Google didnt show up any examples of /usr/bin/host being abused, at all!


How do you adjust loop cuts/edge loops after the fact

I have some loop cuts. I have clicked around and done a few more things and now I want to adjust the amount of loop cuts I made a while ago. How do I go in and edit the count of them?


How can I check if my laptop is using NVIDIA or Intel graphics card so I know what drivers to download?   I notice this similar question   but that user seems to have both installed, and is asking which a program is using, and that question is closed too. My question is of a system with one installed, and asking which is installed.  Often times a laptop model doesn't indicate whether it has an Intel or an NVIDIA graphics card installed, and the drivers page lists both.  I have had that in the past with a laptop, and the last time I was advised by the manufacturer, samsung, to install both, and then whichever driver was the correct one would work.  But each one includes software, which I could I suppose experiment with uninstalling, but it doesn't seem ideal to me. This laptop happens to be an acer, but clearly this is a situation with various laptops from different manufacturers. So it's not peculiar to any one particular model, and model number won't help either with such laptops, in determining which make graphics card is installed.  I am wondering if there is a better way though. A way to check which graphics card is installed, intel or nvidia, so that I can then know which driver to install.


UK visit visa ban after becoming an Australian national

I've been banned from the UK for 10 years for not providing full information. Now I am an Australian citizen. Does this ban still exist? Any guidance will be appreciated.


"Reverse" an SSH connection from destination to target

I have two machines A and B which are in different subnets, both behind separate firewalls. Machine A can see B, but B cannot see A. I have a user account (non-root) on both machines, I can SSH B from A, and I would like to be able to SSH A from B instead, but that cannot be done directly.   I have used tunnelling to hop through intermediate servers with SSH, but what I am asking is different here, and I don't know what it would be called. Is there a way to open a connection from A to B, which could in turn be used "in reverse" from machine B to run commands on A?


$acl_ids = array(1,2,3); $database = \Drupal::database();  $result = $database   ->query("SELECT {nid} FROM {acl_node} WHERE grant_update = :grant",      ['grant' => 1,])   ->condition('acl_id', $acl_ids, 'in')   ->fetchField();   Unfortunately the ->condition part does not work, since I get the following error:     Call to undefined method Drupal\Core\Database\Statement::condition()   What method should I instead use?


I'm looking for a solution to make remote desktop more secure. I'm looking for a fail2ban like for windows and specially for RDP which will block IP in firewall after N failed retries Any help?


Earning basic privileges based on time spent on site or other new criteria

I will start by saying that after reading  about a declined feature request to allow moderators to grant commenting privileges, I am skeptical that my suggestions/thoughts will get positive feedback, but I will try anyways since I think there are real and unsolved problems regarding this topic.  In the question asked  regarding the necessity of 50 reputation as a bar for allowing comments, the most highly voted answer specified that the main reason is spam protection. This makes sense to me, and I completely understand that giving new users the ability to comment right away (or almost right away) will create a flood of comments with no actual value.  From my very limited stackexchange experience, it seems that in some communities, getting 50+ reputation can actually be very challenging. For example, in math.stackexchange, since mathematics is such a huge area, finding new and trending questions one can answer is actually a difficult task, unless one is truly a math expert (at the very least a graduate mathematics student). In addition, it also seems that contributing to older posts (even ones without an accepted or a complete answer) will usually not earn the user new thumbs: there are many posts that are a couple of years old, and these mostly stay inactive even if new and valuable information is added. This is also true for suggesting edits to older posts. I am sure there are other communities that pose similar challenges for responsible beginners who aren't already experts in the field. I want to emphasize that when I say beginners I don't mean high school students: even excelling undergraduate math students will have no chance to answer the vast majority of new questions.  Therefore, I think that considering new ways to earn the basic privileges of the site (mainly commenting), such as time since registration, number of days performing an activity etc' can be beneficial. This will still prevent new users from creating an account immediately after they found a single relevant question and automatically starting to comment on it and related posts. However, users who are responsible, are truly interested in being long-time stack exchange members and didn't join just to ask a question and disappear, will always eventually be able to be more fully participating members.   I am sure such a feature will also lower the amount of content posted as answers posted simply because the user doesn't have commenting privileges, which to my understanding is a relatively common and unwanted phenomenon, which shouldn't be suggested as a workaround. Commenting can also be more likely to properly revive an old inactive post, since it directly notifies the relevant answerer rather than the asker.  Edit: explaining the difference between my question and : In my opinion, the association bonus provides a full solution to the problem described in the other question, which was sharing reputation across different stackexchange forums. My problem is not concerned with sharing reputation per se, but with the initial problem of obtaining reputation in a single forum to begin with. For example, many undergraduate students use a single stack exchange forum to help with their studies, and might not have other interests or knowledge relevant to other forums, in which case the association bonus will be of no use. As I stated in the comments, I think the association bonus is still a good partial solution, but it is not a full one. I might accept one of the answers mentioning it since it is significantly better than nothing.


What is a `\document class clv2`. Why it has so many compatibility issues

I am using Texmaker to write an paper in  \document class clv2. I have already written the same paper in \documentclass[conference]{IEEEtran} but conversion in \document class clv2 is so difficult. Why it has so many compatibility issues? If anyone has used this document class in past, please guide me with algorithms, specially nested loops. I want my algorithm to look something like this.


I use the Eclipse IDE to develop, compile, and run my Java projects. Today, I'm trying to use the java.io.Console class to manage output and, more importantly, user input.  The problem is that System.console() returns null when an application is run "through" Eclipse. Eclipse run the program on a background process, rather than a top-level process with the console window we're familiar with.  Is there a way to force Eclipse to run the program as a top level process, or at least create a Console that the JVM will recognize? Otherwise, I'm forced to jar the project up and run on a command-line environment external to Eclipse.


How are Stack Overflow's default profile pictures generated?

Anyone else wonder how the default profile pics for Stack Overflow are generated? It must be generated dynamically as it shows random patterns. Can anyone show an implementation of the algorithm in Java?


Removing pseudo-nodes using QGIS Sextante plugin?

I have a road network (vector) that i'm interested in carrying out some  on.  Predictably my GIS data is in a pretty terrible state. For example, there are a bunch of roads on the network that look like they join but do not. I've managed to fix some of this (on the surface at least) with the GRASS v.clean tool in QGIS.  My big problem though is polylines. In nearly every case I have long stretches of road that are stored as separate polylines. For example, a long trunk road, split into 5 or 6 separate lines even if they have all snapped together. Worse still in some cases these sections have been given different (or slightly different) road names and have no common identifying attribute. If I run the 'topology checker' in QGIS - it identifies these as 'pseudo-nodes'.   I now want to clean these pseudo-nodes and I was really hoping that there would be a (fairly) simple method of simplifying this network to allow me to run the space syntax analysis tools to actually give a meaningful output. Unfortunately the 'topology checker' only shows you where the errors are, I now need a tool to help me clean them. I had though v.clean from GRASS would do the trick but haven't had much luck. I have been looking at the suggested answers here:    There are a lot of reference to the sextante plugin for QGIS - though I have a feeling this has been incorporated into QGIS's tool now as the 'This plugin is deprecated!' according to the repository. If so, I can't find  "Extract endpoints of lines" and "Join adjacent lines". Does anyone know where I can find these functions - or alternatives?   p.s. using QGIS 2.10 on Ubuntu 14.04 - but open to suggestions of other opensource software/solutions: R; Python, GRASS 7, Open Jump etc.


I'm locked out of my tablet because I can't remember what my screen lock pattern is. How do I reset factory settings if I can't get into the tablet? please help this is all new to me


In complex numbers is $\sqrt{-1}$ equal to $i$ or $\pm i$ ?  In both cases how do we explain it?  The question arose when I saw it in Lathi's book (Linear Systems and Signals).


Can I ask same question again if nobody has answered?

Can I ask same question again if nobody has answered it for some days? Or is there way to re-post a question after some predefined waiting period?


Looking for title of book (<1970) about an interdimensional traveler

In middle school (ca. 1976) I read a science fiction book with a title similar to "Psi Phi."  Unfortunately, I wasn't familiar with the Greek alphabet at the time, so the title never made sense to me, so I can't recall it accurately. Based on my vague memory of the title, I'm thinking it may have been an anthology or a series of science fiction novelas.  The story was about a man who, while experimenting on "a block of tungsten," learned how to travel to a different universe at will.  He described the process of learning to travel there as "knowing where the latch on a secret drawer was."  While in the other universe, his surroundings were uninterpretable, "like swirling shapes and colors." He noticed his own body was (consistent with everything else in this universe) a confusing mass of swirling shapes and colors.  Eventually, a being from the other universe followed him back to his universe.  It was a woman with purple eyes.    That's about all I remember. Except that I enjoyed the story and read it 3 or 4 times.  One of the reasons I kept coming back to it, was that it did refer to a number of things (like different elements, such as tungsten) that I was just beginning to learn about.  I didn't understand all the connections the story made, but they intrigued me.  I'd like to read the story again as an adult.  Would anyone know the name of the book, the name of the story, or the author's name?


"Present perfect" vs. "present continuous" for completed actions

Sometimes the present perfect continuous tense has the same meaning as the present perfect tense, and  it makes me feel confused. I don't know which one is the better to use. For example:    Someone has eaten my chips. Someone has been eating my chips.


How to install seprate OSs on different partitions

I know its a newbie question but I have a VAIO VGN-CR353 running linux openSuSE 12.2. The Hard-disk has only one partition (under IDE there is only home/sda1). I want to install Windows on a separate partition without affecting the current OS, can I do that? And if not, I am willing to remove and reinstall the current installation of linux, but I'm not sure how to separate partitions and ensure each OS runs on a single partition. Thanks.


Why does mkdir -p not work as expected if passed a single quoted path?

Why does the following command: mkdir -p '~/something' creates a directory directory named as '~' in the current, instead of creating a directory named as something in the home directory? Is there any way to fix this? ps. I get the value ~/something as an environment variable wrapped in single quotation.


How can I completely decompose a list of tuples/lists?


Jquery doesn't add listner to a newly added field

in my page I have an add button to add a new field into a table:  $("#add").click(function () {  var rowCount = $('#scale tr').length + 1;  var newRow = '
IP:	                <input type="text" **class="ip"** id="ip' + rowCount + '" name="ip' + rowCount + '"> </input>	Name:	  <input type="text" id="n' + rowCount + '" name="n' + rowCount + '"> </input>
';  console.log(newRow);  $("#scale  tr:last").after(newRow); });   The row is added beautifully.  I also have the following function in document ready:   $(".ip").focusout(function(){     alert("here");     var id =this.id;     console.log(id);     if(!ipcheck(id)){         console.log("after function");         $("#"+id).css("color","red");        }     else(pinging(id)); });   This code alerts me whenever I go to the first row of the table (the one which was initially existed) however for the new rows it doesn't work. My idea is to wrap all the listeners in a function and run the function whenever anything changes however as I have a lot of such a thing in my code I was wondering if there is a better/easier way to do it.


Show bounded harmonic function on $\mathbb{C}$ is constant.

There is  with this exact same prompt which got several down-votes for not showing  their work.  So I'll show what work I've got.  I know being a harmonic function implies satisfying the Mean Value Property, thus what I thought I'd do is consider two arbitrary points in $\mathbb{C}$ and prove that:  $$|u(z) - u(w)|=|\frac{1}{2\pi}\int_0^{2\pi}u(z - re^{i\theta})d\theta - \frac{1}{2\pi}\int_0^{2\pi}u(w - te^{i\theta})d\theta| $$ $$= |\frac{1}{2\pi}\int_0^{2\pi}u(z - re^{i\theta}) - u(w - te^{i\theta})d\theta|$$  Now what I wan't to do is take r and t to infinity and prove this integral goes to zero, but I can't figure out how to do that.  I've used the fact that my harmonic function u is defined on all of $\mathbb{C}$ in taking t and r to infinity but I still need to use the fact that it's bounded.  I also read through the proof of Liouville's Theorem, given as an answer in that other post, which seems intuitively correct but rather un-rigorous.  It actually says that the value in the center of a ball is equal to the average over the ball's volume.  I imagine this can be proven from the average over the boundary since the average over the boundary will not change as you continuously shrink the boundary down to its center. This however would require the difference of two surface integrals, or is there a simpler way?   I was also considering using the Maximum Modulus Principle somehow but I haven't found a way yet.  I've probably made this way more complicated than it has to be, hopefully someone can help me, thanks! =].  Edit: Ok after thinking some more about the accepted answer in that other post, I've decided what I need to do is look at the canonical holomorphic function whose real part is my harmonic function u, and prove that holomorphic function is bounded.  From there I can prove that since it's entire and bounded that it's constant, and from there prove that then its real part must be constant.  So could someone talk a bit about the construction of this canonical holomorphic function?


How to avoid an external HDD (USB-Drive) to mount automatcilly

I do have an external HDD which is partitioned (5 Partitions) and i usually only use one or two of the 5 partations therefore i have no interest that once i plug-in the usb the 5 partitions are automatically mounted.  Is there a possibility to avoid or to select which partitions could be mounted automatically, whit the free option to mount the other partitions (if needed) at any time later?  I'm not a good programmer therefore i'm looking for an easy solution or an easy script!


Dropbox Installation Broken, Laptop Running Hot - unable to Update

I'm having few problems with Ubuntu 12.04. This occurred after trying to install dropbox.  Now, I'm unable to install dropbox or any update. I've tried following commands, but it doesn't fix anything. It'll ask me to type sodo dpkg -configure -a and dropbox will start downloading and get stuck at 100%.   I've tried the following commands:   sudo fuser -cuk /var/lib/dpkg/lock; sudo rm -f /var/lib/dpkg/lock  sudo fuser -cuk /var/cache/apt/archives/lock; sudo rm -f /var/cache/apt/archives/lock sudo rm /var/lib/dpkg/lock   sudo apt-get clean sudo apt-get update   sudo apt-get --purge remove nautilus-dropbox This command does not work as says, "E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem."  And when I type sudo dpgg --configure -a, it will start downloading dropbox and gets stuck at 100%. Also, laptop runs hot now. All 4 cores were running at 100% prior to typing but sudo fuser commands, but afterwards still 2 cores are running at 100%.   Help would be appreciated!  Thanks!


Poincaré-Bendixon show periodic solutions.

Show that the system $x^{'}=x-y-x^{3}$,$y^{'}=x+y-y^{3}$ has a periodic solution.   I converted to polar:  $r r^{'}=x^{'}x+y^{'}y.$  Thus  $r r^{'}=x^{2}-x^{4}+y^{2}-y^{4}.$  Collecting squares:  $rr^{'}=x^{2}+y^{2}-(x^{2}+y^{2})^{2} +2x^{2}y^{2}.$  Substitute:  $r^{'}=r-r^{3}(1-(\sin^{2}(2\theta))/2)$  $r^{'}=r-r^{3}(1+\cos^{2}(2\theta))/2.$  Setting $r^{'}=0$ yields  $r^{2}=2/(1+\cos^{2}(2\theta).$  Thus $r_{max}= 2^{(1/2)}$ and $r_{min}=1.$  I suck at trig and this doesn't look right. Clearly $(0,0)$ is the only fixed point, so I have a bounded region. I just don't think I have found correct values for $r_{min}$ and $r_{max}$ to find my limit cycle.


Movie (pre-1998) - Alien like creatures on an abandoned airport

I saw this movie when I was a very young kid with my grandpa circa 1995-1997. I don't remember when the movie was actually produced, but I have a feeling it wasn't a very old movie, like pre 1990s, or an 80s, 70s movie. It should have been made around 1990-1996. I remember the graphics of the aliens were good at the time (although if I saw them now they would probably look cartoon-ish). My guess is it a b-movie horror flick (most likely with bad ratings).  It was an adult movie (but he didn't care). It was certainly very frightening to me at the time and there was a lot of blood and even aliens eating people (I don't remember many more details though). I was glued to the screen. I remember there were rounded-shape aliens, or strange looking red demon like creatures that appeared not to just haunt but actually attack a group of people that were stranded in an abandoned airport. It's not much of a thriller movie, but horror & science fiction I believe, with a touch of mystery before the aliens made their full on appearance and were trying to eat everyone. By the way it was an American movie, everyone was speaking English.  I can't remember how this group of people got themselves there, their airplane crashed (but how would they survive then?) or something else happened. But I do remember it was an abandoned airport for sure. They found themselves stranded there and there was NOBODY there. They tried to call for help but all communications were down (not 100% sure on this). It was a wide open desert-like field (looked like Arizona or Colorado). I don't remember any of the actors either, but a white male protagonist on the role and a white female as well as a few other people in the group of various colors etc. It had a mystery feel on the first half of the movie and the other half was horror. I don't remember what happens in the end either. I do sort of remember they reach the conclusion that the aliens ate everyone there though.  I remember that those were in fact aliens and not demons. The movie was clinging on Sci-Fi not paranormal (that's why I don't think they were demons). Pretty sure on the alien part.  I have a clue as to how the group found themselves there. I believe it is correct. Their airplane needed emergency refueling, so by radar the pilot found a nearby airport (but I don't believe he communicated with someone). So they decided to make an emergency landing and upon arrival they could not find ANYONE there. So they were looking around, the passengers were curious. All in all the group of people couldn't have been more than 20. I remember the airplane that got them there was quite big but that doesn't justify the fact that the people were few in numbers.


Why are mathematical proofs that rely on computers controversial?

There are many theorems in mathematics that have been proved with the assistance of computers, take the famous  for example. Such proofs are often controversial among some mathematicians. Why is it so?  I my opinion, shifting from manual proofs to computer-assisted proofs is a giant leap forward for mathematics. Other fields of science rely on it heavily. Physics experiments are simulated in computers. Chemical reactions are simulated in supercomputers. Even evolution can be simulated in an advanced enough computer. All of this can help us understand these phenomena better.   But why are mathematicians so reluctant?


gnome-desktop-item-edit: command not found on Ubuntu 19.10 and later even with the 'gnome-panel' package installed

I installed Ubuntu 19.10 and have issues trying to create a desktop icon with gnome-desktop-item-edit.  $ sudo gnome-desktop-item-edit ~/Desktop/ --create-new    sudo: gnome-desktop-item-edit: command not found  $ which gnome-panel    /usr/bin/gnome-panel  $ gnome-panel --version    gnome-panel 3.34.0   Is this an issue with Ubuntu 19.10 or a problem with the gnome-panel package?


My parents will be applying for Schengen visa from India. They will opt for Mutiple entries.  These are the tentative travel dates to Paris as per the itinerary (Aug 19 to Aug 25).  Is it that the Visa authorities will only issue visa from Aug 19 to Aug 25 ? What if my travel plan changes after I receive the visa ? Will the visa be invalid?


If I know the order of every element in a group, do I know the group?

Suppose $G$ is a finite group and I know for every $k \leq |G|$ that exactly $n_k$ elements in $G$ have order $k$. Do I know what the group is? Is there a counterexample where two groups $G$ and $H$ have the same number of elements for each order, but $G$ is not isomorphic to $H$? I suspect that there is, but I haven't thought of one.


Can the shadows be touched while invisible?

Think the question says it all..  I am wondering when the shadows can't be seen but are present do they still have substance and can be touched?  or are they in a different phase or something?


I have been reading many articles on LASSO regression, and everyone claims that LASSO address multicollinearity showing contour plots of cost function touching the corner of the diamond(x1+x2). In the first place, I didn't understand how does this phenomenon translate to addressing multicollinearity when there are many groups of correlated variables in the data.  Verbatim from one of the research paper: "• If there are grouped variables (highly correlated between each other) LASSO tends to select one variable from each group ignoring the others".


I've noticed that the second argument of \fontsize appears to get ignored sometimes when wrapped in curly braces.  Instead, the text appears to be set with minimal leading.  Example 1:  \fontsize{18}{100} \selectfont Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah   Output with ridiculously large space between lines, as specified:    Example 2:  {\fontsize{18}{100} \selectfont Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah}   Output with no space between lines, despite request for outrageous space between lines:  I've tried this in several setups: on my own machine, and in two online compilers, in PDFLaTeX right out of the box, with no packages loaded.  I noticed it for the first time while using XeLaTeX, though.  Is this a bug in \fontsize?  Is it somehow supposed to work like this—is there some rational reason for the leading to break when the thing is placed in curly braces?  To add to the weirdness, the strange behavior appears to go away if an empty line is added before the closing curly brace.  So the following example gives output apparently identical to that of Example 1.  Example 3:  {\fontsize{18}{100} \selectfont Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah Blah  }


We have several SEO pages like:  http://www.example.com/PageOne.html   Which we redirect in config like:  location = /PageOne.html {   rewrite ^/(.*) /seo.php?id=1 last; }   Problem is if a user access this page by typing:  http://www.example.com/pageone.html   "Page Not Found" error is displaying. There are approximate 500+ seo pages. How to write rule for nginx to ignore case sensitivity in url? I want a common solution for all url.


Does poll not allow multiple anonymous votes?

We're having a problem with the core poll module on drupal 7. We have a poll that we want anonymous users to be able to vote on. There is currently one anonymous vote, and now anonymous viewers only see the result (we've tried looking at it from outside our network).   We've checked the perms, and anonymous can vote and view results ( but not change vote). We've cleared the cache.   How does Poll work on D7 with regards to the anonymous user?


Implement a case in Python to execute specific commands

I want to implement a code in Python but I need to implement a switch case. I saw this online (a standard example):  def switch_demo(argument):     switcher = {         1: "January",         2: "February",         3: "March",         4: "April",         5: "May",         6: "June",         7: "July",         8: "August",         9: "September",         10: "October",         11: "November",         12: "December"     }     print switcher.get(argument, "Invalid month")   But I need something different. I don't want to display some strings but to execute some commands, like:  switch(button) { // this is a code for C structure case 1: do some things ( not just display text) case 2: do some things ( not just display text)   And so on. Can you please give me an example of how this structure is supposed to look?


How to remove all emoji from SQL Server table

How can I remove all the emoji icons from a SQL Server table?  I want to remove all 😋 😋 icons and keep only Hebrew and English Spaces.. letters  In the end I want to keep only Basic Latin (0020—007F) and Hebrew (0590—05FF).


How can I install dropbox in Ubuntu 18.04

I am a complete novice to Linux.  I am unable to install dropbox; when on dropbox download site the .deb 64 bit package downloads but won't install. If I click install it will ask if I wish to remove it, but if I click remove it won't!


Identify the correct options for $f(r,\theta)=(r \cos \theta, r \sin \theta)$

Let $f:\Bbb{R}^2\to \Bbb{R}^2$ be the function $$f(r,\theta)=( r\cos \theta,r \sin \theta)$$ Then for which of the open subsets $U$ of $\Bbb{R}^2$ given below, f restricted to $U$ admits an inverse?   $U=\Bbb{R}^2$ $U=\{(x,y)\in \Bbb{R}^2 : x>0, y>0\}$ $U=\{(x,y)\in \Bbb{R}^2 : x^2+y^2<1\}$ $U=\{(x,y) \in \Bbb{R}^2 : x<-1, y<-1\}$   I think option 2 and 4 are correct since the Jacobian of the map will be $r$ and it will be non zero at every nbd of a non zero (x,y) and thus by IFT inverse will exists. Am I right?


Can you really always yield profit if you diversify and wait long enough?

It is a common assumption (and, as far as historical stock market data goes, also proven) that the stock market is always growing if you enlarge the time window long enough . In other words: The stock market always goes up in the long term. Is, therefore, the conclusion valid that you can totally invest as much as you want at any point in time you want and you can never go wrong, if  You diversify strong enough (invest "in the world") You do not need to urgently sell your assets at any point in time  If yes, all that strategies that rely also on diversified, long-term investments (Dollar-Cost-Averaging & Rebalancing, .. what others do you know?) are just to optimize the yiels, but you'd make profit even without those strategies. Is that correct?


My Gmail is lost and I can't find it anywhere

I literally lost my Gmail account. When I go to Gmail, only my daughter's pops up and mine is nowhere to be found.


I want to run a command automatically. The problem is that it may only be run after I logged in and that it requires superuser privileges. I've heard of suid before, so I thought I'd use it for this.  I created a script /mountDropbox.sh which only contains the bash shebang and a mount command. Then I ran this command to set the setuid bit:  sudo chmod 4755 /mountDropbox.sh   However, when I try to run it as a normal user, mount complains about not being executed with superuser privileges:  $ /mountDropbox.sh  mount: only root can do that   Why does this happen? How can I achieve that this file is always executed with superuser privileges?  I use Ubuntu 16.04 with kernel 4.4.0-134-generic. / is an ext4 file system.  $ ll /mountDropbox.sh  -rwsr-xr-x 1 root root 77 Sep  4 17:35 /mountDropbox.sh*


Flash Player works on Firefox, but not on Chromium?

I want to play online games, and other online stuff that requires Flash Player on the internet. Flash Player works just fine under Firefox, but in Chromium I just get a blank page. I don't know what is the exact problem or know to fix it.


I'm trying to do object tracking using Blender 2.71. In a youtube video the guy simply clicks "Object Motion" in the Solve tab.  His Screen:    My screen:    But I can't find this option.    Can anyone help me please?


I've tried about 6-7 different methods for centering this text vertically so it remains responsive and in the center of the div.   here is a fiddle:   I've tried using positioning such as   margin-top: 40%;   or   margin-top: 20em;   to the h1 element to push the text down but its not fluid at all and breaks a lot.


Title used for an autokrat in an Asimov story?

I recall Asimov had a character who was The autoc of , clearly based on the word “autokrat” but I don’t recall the exact spelling.  This stumped Google, which would rather correct the spelling to some other word than find a unique word.  In the story, he had gone undercover and the reader did not know either that some other character was in fact the Autoc, until it had been revealed to the main character.


Is $C[0,1]$ a Banach space for the $L^1$ norm?

Is $C[0,1]$ a Banach space with respect to the norm $\|f\| = \int\limits_0^1|f(t)| \, dt$?   People keep telling me it is, but lets consider: $f_n(x) = x^n$. This function defines a Cauchy sequence, yet the limit clearly isn't a continuous function!


I tried to fix the footer at the bottom of the page, but it didn't work. so guys, can you please help me?  note: you can find footer.css file in a folder called page_parameter_mon_ecole and thanks in advance :)  ↓↓↓↓↓↓↓↓↓↓


My battery started draining very fast ,but only when I use Ubuntu 16.04

I am using a Laptop Dell 15 5555.  What can i do.     CPU~Quad core AMD A10-8700P Radeon R6 10 Compute Cores 4C+6G (-MCP-) speed/max~1300/1800 MHz Kernel~4.10.0-33-generic x86_64 Up~4 min Mem~1048.2/11518.6MB HDD~1000.2GB(2.5% used) Procs~225 Client~Shell inxi~2.2.35


List of symbols and abbreviations just as two columns

I would like to make a list of symbols and abbreviations without using any special packages like nomencl and alike. What I would like is just left-aligned two columns once for the symbols and one for the abbreviations.   Should I start with the following?  \begin{flalign*} Symbol_1 &: Meaning of Symbol_1 \\ Symbol_2 &: Meaning of Symbol_2 : : \end{flalign*}   Would be very grateful for any help!


While covering the Queen, what happens if I pocket only an opponent's coin?

I pocket the Queen and then, while covering, pocket only an opponent's coin instead of my own. Both players still have more coins left on the board. Does the Queen count as being covered by the opponent or will it be put back on the board?


Does anybody know how to eliminate the numbering only in sections D and E, whereby the title itself for the Section D or Section E should start exactly at the beginning of the line? Additionally, the section numbers should not appear within the table of contents and should start exactly at the beginning of the corresponding line. Thanks in advance!  \documentclass[12pt]{article}  \begin{document} \newpage \tableofcontents \section {Section A} \section {Section B} \section {Section C} \section {Section D} \section {Section E} \end{document}


Trying to figure out how I can get the mesurment tool in blender 2.8 to render with my image?


If I add an @reply when editing a comment, does it trigger a notification?

It sometimes happens that I leave a comment on a post, meaning it as a reply to another user, but I forget to include a @reply string to notify the other user.  If I edit my comment (within the 5 minute window) to add the @reply string, will it cause the target user to be notified?


QtCreator shows me this error message and asks me to browse for and select a cmake executable:  /usr/bin/cmake: error while loading shared libraries: libgssapi_krb5.so.2: cannot open shared object file: No such file or directory


There is not an holomorphic function on a bounded domain such that $\lim_{z \to w} f(z)= \infty$ for every $w \in Fr(\Omega)$

I had to solve the following question in an exam:     Prove that there is not a holomorphic function on a bounded domain   $\Omega$, $f:\Omega \to \mathbb{C}$ such that $\lim_{z \to w} f(z)= \infty$ for every $w \in Fr(\Omega)$ where Fr denotes the boundary of   $\Omega$.   The exam suggested that one should proof that in this situation $f$ could not have zeros in the domain. I did the exercise in this case, but how can I proof that $f$ has no zeros in $\Omega$?


Sort nested dictionary inside a list in Python?

[ { "PricingOptions": { "Price": 51540.72, "Agents": [ 4056270 ] } }, { "PricingOptions": { "Price": 227243.14, "Agents": [ 4056270],} } ]   How can I sort according to Price..?


If you multiclass correctly so you get expertise from both bard and rogue(e.g. Rogue 1 and Bard 3), and if in both classes you put the expertise into Deception, does it stack on an ability check?   Example:   The bard/rogue is proficient in Deception.  With a 16 (+3) charisma at level 4 would the character get a +15 bonus to Deception rolls?


Why didn't Dumbledore do anything to lift the curse on the Defence Against the Dark Arts teacher?

Throughout the entire series, it was rumored that there is a jinx on the post of "Defence Against the Dark Arts" teacher, which leads to the fact that, no wizard can hold that post for more than 1 year. This curse was cast by Lord Voldemort.  If Dumbledore knew the existence of this curse, why didn't he do anything to lift the curse?


Using contrapositive to Prove that if an average of a thousand numbers is less than 7, then at least one of the numbers being averaged is less than 7

so I know that the contrapositive will be something like;  If all the numbers are greater than or equal to 7, then the average cannot be less than 7.  How do i go about proving it from there? or is there any other method of proving it? if so how?  I really appreciate the help from anybody!


I've installed Magento2 on Ubuntu using ssh on AWS EC2. However I would like the niceties of a control panel such as cPanel/Plesk to make things easier.   I've read that cPanel is not supported, can Plesk be used and is it a good alternative for someone not too familiar with Linux commands?  Is there any other way of remoting into Linux which provides a UI ?  Thanks


Where can I find a step-by-step guide on how to install Windows 10 AFTER Linux?

I previously used Windows 8, then upgraded to 10. Now, after using elementaryOS for a while and being quite satisfied with it, I was thinking about reinstalling Windows 10 in dual-boot, just to play some games every once in a while.  Now, I know that installing Ubuntu and derivatives AFTER Windows is a piece of cake (I have done it myself in the past), while the other way around is a bit of a mess.  Nonetheless, I'd rather try. Since I'm a bit of a noob, I need a simple, step-by-step guide on how to do install Windows 10 in dual boot (so far, I haven't found any).  Thanks in advance.  Oh, and, before someone asks, I'm currently downloading Windows 10 ISO; according to MS's FAQ, it should recognize my hardware (since I registered after upgrading from Windows 8), so the license shouldn't be an issue.  EDIT - a couple more questions:  1) what's the best way to put the Windows ISO on a USB disk? For Linux Live USB I've always used UNetBootin, but I'm guessing it's not going to be of any use in my case.  2) Here are my partitions:    Should I just increase the size of the unallocated space? Or create a new partition?  EDIT 2 - also, I just noticed that gparted doesn't show any swap partition... is that normal?


i have this issue with javaFX GUI  ... i want when i press button i verify if there is no empty pane else i Add a new pane  .. but every time i get ConcurrentModificationException . i have tried with print and i see that only the first section of for here is executed and not the other   enter code here     button.setOnAction(new EventHandler<ActionEvent>() {                     @Override                     public void handle(ActionEvent event) {                         for (Node node : vbox.getChildren()) {                             if (node instanceof Pane){                                 Pane pane = (Pane) node ;                                 if (pane.getChildren().isEmpty()){                                     vbox.getChildren().remove(node);                                 }                             }``                         }                         drugrow drug = new drugrow();                         vbox.getChildren().addAll(drug.getPane());                     }                 });


How to nest a pre-written chapter into another chapter without manually changing sectioning commands one by one

I have a tex file with several written chapters. Then I found I need to nest one of them to another. I know this can be done by manually changing the sectioning command one by one but I found it really time consuming and a bit dumb :p   for example, I now have this document  \chapter{big nest}     \section{a}     ...     ... \chapter{i want to be a section}     \section{b}         \subsection{c}   I want to nest chapter{i want to be a section} into chapter{big nest} and after compiling, in Table of Contents it should look in a structure like:  \chapter{big nest}     \section{a}      \section{i want to be a section}         \subsection{b}             \subsubsection{c}   Question: Is there a clever way to nest an entire written chapter into another chapter?  By the way, I'm sorry for my poor language and hope you understand my question. I also have tried to search for related topic but I don't know the correct words so I got no related search results. Maybe there is, please let me know. Thank you.


Why is it that more rings of this nature/power could not be made again? Are there no elven smith's left with the capability? How were the rings of power "enchanted" with their magical properties to begin with if Sauron did not directly forge them?   You would think that more would be made to aid in the battles against Sauron and his armies if someone had the capabilities to do so.


Has QGis 3.4 some limitation for filenumber to load shp files?

I want to load over 600 shp files at once in qgis 3.4. Is there a limitation on the number of shapefiles that can be added?


I got some issues with sound, sometimes it freezes and get out of sync with picture. VLC is giving me error, and there is said that I should update to pulseaudio 3.0. I'm running Ubuntu 12.10 and pulseaudio is  $ pulseaudio --version pulseaudio 2.1   Shall I upgrade? And if so, how?


Should there be a SO question closure reason "Cruft"?

To be clear: I'm not here to whine about my SO questions being closed; I'm here to learn, and to suggest clarification for a potential source of confusion for relatively new users like myself.  Should a new closure reason "Cruft" be introduced? Or if this is common usage of the "Not a real Question" code, should the definition be modified to include it?  Background information:  My SO Question " was closed as "Not a real Question", which is defined here on Meta as "It's difficult to tell what is being asked here. This question is ambiguous and vague, and cannot be answered in its current form."  But that isn't why it was closed. It did (after editing, before it was closed) have a clear, unambiguous question that could be answered. The actual reason it was closed is because it was considered cruft. (why I thought otherwise is noted in the comments, but that is not the point here.)


How to uninstall AVG which isn't listed under My Apps?

That's pretty much it, my Sony Xperia Z3 Compact came with AVG antivirus preinstalled and I can't see how to uninstall it, since it does not show up in Play Store under My Apps / Installed (or anywhere else). My Android version is 4.4.4 .  Note that my problem is not the one mentioned in . In my case under Settings > Security > Device administrators the checkbox next to AVG was already unchecked. Instead my problem is simply that I don't know where to start the uninstallation process (and I don't understand why all my installed apps do show up as expected under My Apps but AVG does not).


How to let PHP to create subdomain automatically for each user?

How do I create subdomain like  ? Do i have to access htaccess somehow? Is it actually simply possible to create it via pure php code or I need to use some external script-server side language?  To those who answered: Well, then, should i ask my hosting if they provide some sort of DNS access??


Do users receive notifications for replies if the target comment is deleted?

Assuming the following, not entirely hypothetical exchange of comments:  User A: user B is a moron Moderator C: @userA insulting other users is not acceptable, ...  Moderator C also deleted the comment from user A, as it was clearly offensive. Does User A get a notification for the reply of moderator C if the target comment is removed? Does it matter if the moderator removes the comment before or after writing their own comment reply?


Does Linux use original Unix code or do they share the idea?

Does the Linux kernel use original Unix code or do they share the idea? Since both are written in C, is that true?


Convergence in measure in finite measure space

Let $(X, \mathcal A, \mu)$ be a finite measure space and $f: X \to \mathbb R$ and $f_n: X \to \mathbb R$ measurable for all $n \in \mathbb N$.   Why does then $f_n$ converge to $f$ in measure if $$\lim_{n \to \infty} \int \frac{|f_n-f|}{1+|f_n-f|} d \mu = 0?$$


My question is how to ask him to call me     "Whenever you're free call me once"   Is this the correct way of telling him to call me? If not, what would be the correct sentence?


Casting Exception for Generic Arrays in Java

I am trying to create a generic Array in Java below the code snippet.   static<T extends Comparable<? super T>> T[] exactlyOnce(T[] A){       T[] temp , B;       temp = (T[])new Object[A.length];       B = (T[])new Object[A.length];    //Rest of the code follows }   It produces following exception not sure on how to resolve this.   Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Ljava.lang.Comparable;


does time exist in space or does space exist in time

Does time exist in space or does space exist in time?  Alternatively, perhaps both are independent existences?  Another possibility is that this question is beyond the capacities of the human mind.


hi all i am new to Ubuntu  i want to install Ubuntu  in my laptop hp 250 but it always shuts down in the first seconds and not installing  i searched in the net and installed it with nomodeset  my question is what is nomodeset and is it normal to install Ubuntu using this option


Derive color palette from given set of colors

I have a set of colors on a webpage where one color is the main one:  #864062 <-- main color #853f61 #925071 #541c38 #64304A #eac9d7   Now I would like to derive similar color scheme for any arbitrary main color.   My idea was to:   Convert all colors to decimal notation (r, g, b) Calculate ratio of individual components for each other color and main color Use these rates as a conversion matrix for any other main color.   For my example, rgb of individual colors is:  134  64  98 133  63  97 146  80 113 84   28  56 100  48  74 234 201 215   Ratio of each component (other color / main color):  0.99 0.98 0.99 1.09 1.25 1.15 0.63 0.44 0.57 0.75 0.75 0.76 1.75 3.14 2.19   Now for any new main color I can calculate all the other colors:  100 100 100 <-- new main color  99  98  99 109 125 115  63  44  57  75  75  76 175 255 219 (max is 255, cannot have 314)   My question is if this way of calculation makes any sense as I have never done any math with colors before.


I am using VTEX (visual Tex). When I run this program, it shows a error message that is    ! Undefined control sequence. \convertto #1#2->\strip@pt \dimexpr                                      #2*65536/\number \dimexpr 1#1 ?   But this program runs in LaTeX successfully.  How can I solve this error?  \documentclass{article}  \makeatletter \def\convertto#1#2{\strip@pt\dimexpr #2*65536/\number\dimexpr 1#1} \makeatother  \begin{document} \newdimen\mylength \mylength=1in \convertto{cm}{\the\mylength}cm \end{document}      Output: 2.54 cm


I have these two json  var json1={   key1: 'val1',   key2: 'val2' } var json2={   key3: 'val3',   key4: 'val4' }   I want a thrird json with the values from json1 and json2, like this:  json3 = {   key1: 'val1',   key2: 'val2',   key3: 'val3',   key4: 'val4' }   how can make it posible?, thanks ;)


Fantasy book about dual magic where the protagonist learns his dreams are actually real

I read a book a long time ago that I'd like to revisit.  Main plot involves a protagonist that learns every time he dreams he's actually living a dual life in a monastery. Every dual person who sleeps in one world wakes up in another and has dual magic. Life/death or knowledge/ignorance or fire/water. Protagonist chooses life/death and one his hands is dead as a result. He realizes the language he studied in what he thought were his dreams is real and can speak them to other magicians that live in the two worlds.  I remember that if someone died in one world, they would lose their magic and have to live out the rest of the other life in the other world.  If I had to guess I read it about 20 years ago, though I do not know the original publication date. I have a vague memory of the cover being of one or more people underground.  If memory serves the fire/water magic worked where if the caster summoned a lot of fire then water would also appear to 'balance the scales'. There was a scene where the fire caster summoned fire in an underground tunnel and a nearby reservoir tried to flood the tunnel to compensate.


In short my question is how can I remove/delete an panel/class/operator which: a. I don't know the full name b. and I don't know where it is stored in Blender system. In other words, how I can undo a script that I run several times... when I only have the script? Below you could find the script.  more on mocap operation could be found in this tutorial : if relevant, some additional details on what I did: I tested a mocap script. Thus, I had to run also the below mentioned script. Which displays a panel on the UI and also a small button on the tool menu. Currently it doesn't function. I don't know why. So I decided to uninstall then reinstall the scripts later. Reboot. I run it before from different files. I unregistered and deleted the scripts from all of them, but the operator exists somewhere in the system. cannot figure out how to remove the panels+actions created by the script. I tried the following which didn't work. OpenCvClass = bpy.types.WorkSpaceTool.bl_rna_get_subclass_py('ui_plus.opencv')  bpy.utils.unregister_class(OpenCvClass)  Sorry, I struggle to paste the code properly, this question though relates to the forum's Meta:    import bpy        class OBJECT_MT_OpenCVPanel(bpy.types.WorkSpaceTool):         """Creates a Panel in the Object properties window"""         bl_label = "OpenCV Animation"         bl_space_type = 'VIEW_3D'         bl_context_mode='OBJECT'         bl_idname = "ui_plus.opencv"         bl_options = {'REGISTER'}         bl_icon = "ops.generic.select_circle"                      def draw_settings(context, layout, tool):                  row = layout.row()             op = row.operator("wm.opencv_operator", text="Capture", icon="OUTLINER_OB_CAMERA")             def register():         bpy.utils.register_tool(OBJECT_MT_OpenCVPanel, separator=True, group=True)          def unregister():          bpy.utils.unregister_tool(OBJECT_MT_OpenCVPanel)          if __name__ == "__main__":         register()


Drop in SERP after migrating to a new server

Everthing was going fine with my website untill I switched to a new server.  On the first day, I started to see a drop in SERP and delay of indexing of new posts. Nothing else has changed except the server migeration.  How could they be related?


Finding whether $f(n)$ is $O$, $o$, $\Omega$, $\omega$ or $\Theta$ of $g(n)$.

$f(n) = n + (\log n)^{2}, \quad g(n) = n + \log(n^{2})$.  Log is assumed to be base 2.  Now I put this in the as $f(n)/g(n)$ which is of the form $\frac \infty{\infty}$.  So then I applied L'hopital's rule giving me  $f(n) = 1 \ + \ 2 log(n) \frac1{n(ln(2))}$   $g(n) = 1 + 2\ \frac1{n(ln(2))}$ now if I do $f(n)/g(n)$ I  get  $\frac {1 \ + \ 2 log(n) \frac1{n(ln(2))}} { 1 + 2\frac1{n(ln(2))}}$  Now since the $\frac1{n(ln(2))}$ part in both equations tends to 0, I'm left with 1/1 and thus $f(n) = \Theta g(n)$  Is this correct?


Invalid output from conditional operator

I wrote a program and have problem with results. When I'm enter some numbers, for example 43.01, conditional operator ignores that statement is true and gives me a wrong output ( 0 cents ), where is the problem?  int main() {     double money_amount;     cout << "Enter money amount. For example: 3.59\n";     cin >> money_amount;     int dollar_amount = money_amount;     double cent_amount = money_amount - dollar_amount;     cout << cent_amount << "\n"; // to make sure that there is 0.01     dollar_amount == 1 ? cout << "You have 1 dollar\n" : cout << "You have " << dollar_amount << " dollars\n";     cent_amount == 0.01 ? cout << "You have 1 cent\n" : cout << "You have " << floor(cent_amount*100) << " cents\n"; // here is the problem }


GPG Error while downloading software: "Clearsigned file isn't valid, got 'NODATA'"

After installing Ubuntu 13.10 I try to install ubuntu-restricted-extras or any software, it shows me:  E: GPG error: http://archive.canonical.com saucy InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication


How many pairs $(A,B)$ are there up to $n$ such that $\gcd(A,B)=B$ and $B^2\neq A$? If we consider $n=5$, we have $25$ possible pairs, $(1,1)$, $(1,2)$, $(1,3)$, $(1,4)$, $(1,5)$, $(2,1)$, $(2,2)$, $(2,3)$, $(2,4)$, $(2,5)$, $\dots$, $(5,5)$.  Eight of these satisfy the above condition. My main objective is to find out the number of such pairs if $n$ is given, with a efficient method.  So far I know I have to count those pairs $(A,B)$ where $A$ is divisible by $B$. Hence if I find out the number of divisors of all the numbers up to $N$, we will have the number of pair $\gcd(A,B)=B$.  For example,for $n=10$, $1$ has one divisor, $2$ has two divisors, ..., and $10$ has four divisors. So the total number of "candidate" pairs is $1+2+2+3+2+4+2+4+3+4=27$. We now remove the pairs with $B^2=A$, of which there are three, so our desired result is $24$.  One of my friends showed me  a method but he didn't state the reasoning behind it.  Here, I'm presenting his method for $n=10$.  $$\begin{align*}     2\sum_{i=1}^{\lfloor\sqrt{n}\rfloor} \big(\lfloor n/i\rfloor-i\big)     &=2\big(\lfloor 10/1\rfloor - 1 + \lfloor10/2\rfloor - 2 + \lfloor10/3\rfloor - 3\big)\\     &= 2\big(10 - 1 + 5 - 2 + 3 - 3\big) \\     &= 24\,. \end{align*}$$  Why does this give the right answer?  Can anyone clearly explain the reasoning behind the above method in detail?