On the community moderator election , I see three sets of requirements, in different places. The main body of text says  For the Stack Overflow election, an eligible candidate for the election must have all of the following badges:  Civic Duty  Strunk &amp; White  Deputy  Convention    At the bottom,  You need all of the following badges to nominate yourself as a candidate: Strunk &amp; White, Civic Duty, Deputy, and Convention.  Then off to the side,  In the nomination phase, any community member in good standing with more than 3,000 reputation may nominate themselves to be a community moderator.  I'm not sure if the first one refers to a different event or phase (&quot;election&quot; vs. &quot;nomination&quot;), but the last two certainly seem (to me) to be at odds. Does someone need reputation, badges, or both to be nominated?  This is not a duplicate of , which mentions nothing about 3,000 reputation. If anything, this is a duplicate of (currently unanswered) .
The  says that there is a moderator election occurring.   How does the election work and how can I get involved?
Sort an Array by keys based on another Array? Is it possible in PHP to do something like this? How would you go about writing a function? Here is an example. The order is the most important thing.  $customer['address'] = '123 fake st'; $customer['name'] = 'Tim'; $customer['dob'] = '12/08/1986'; $customer['dontSortMe'] = 'this value doesnt need to be sorted';   And I'd like to do something like   $properOrderedArray = sortArrayByArray($customer, array('name', 'dob', 'address'));   Because at the end I use a foreach() and they're not in the right order (because I append the values to a string which needs to be in the correct order and I don't know in advance all of the array keys/values).  I've looked through PHP's internal array functions but it seems you can only sort alphabetically or numerically. Irrationals: A Group? I understand that the set of irrational numbers with multiplication does not form a group (clearly, $\sqrt{2}\sqrt{2}=2$, so the set is not closed). But is there a proof or a counter-example that the irrationals with addition form (or do not form) a group?  Thank you!  Edit: In particular, I am wondering if the set is closed with respect to addition. How to model effectively using exact measurements? I always struggle when trying to create a floor plan or furniture. How do I model using exact measurements. Energia/MSP-EXP432 Issue: Analog In Pin removing voltage from Voltage Divider In the circuit below, I want to measure the voltage going to the ADC (output from the voltage divider consisting of a fixed resistor and photoresistor) using an MSP-EXP432; however, the MSP-EXP432 "Analog In" pin is lowering the output voltage (i.e. the voltage going into the ADC from the voltage divider drops when the "Analog In" pin is connected).  I set the analog pin as an input in the code shown below in Energia.  Is there any way to fix this?    const int bitsOfADC = 14; // 14-bit ADC Launchpad //int maxVal = 2^N -1;  // 2^14-1 int maxVal = 16383; float FSV = 5.0; // Supply to 0804ADC float LaunchPadResolution = FSV/maxVal; int D7 = A13; int D6 = A14; int ADCInput = A6; boolean D7_State = LOW; boolean D6_State = LOW; void setup() {   delay(1000);   Serial.begin(9600);   pinMode(D7, INPUT);   pinMode(D6, INPUT);   analogReadResolution(bitsOfADC);   pinMode(ADCInput, INPUT); } Is “fortnight” an outdated word? I'm studying English vocabulary books, I find this word in each unit describing time words (days, weeks, months...).      There are 2 weeks in a fortnight.   Almost I haven't seen this word before in social websites, emails or movies. the only place I heard this word is in historical movies.  So, is it a outdated word or native speakers still use it? Valid references on origins of Machine Learning, Statistical Learning and Data Mining Express partial derivatives of second order (and the Laplacian) in polar coordinates $z=f(x,y)$ where $x=rcosθ$ and $y=rsinθ$  Find $ \frac{\partial z}{\partial x}$ and $ \frac{\partial^2 z}{\partial x^2}$  I'm having big troubles with using chain rule, in particularly the second derivative. Spent 2 hours on this already. What I have...  $ \frac{\partial z}{\partial x}=\frac{\partial r}{\partial x}\frac{\partial z}{\partial r}+\frac{\partial z}{\partial θ}\frac{\partial θ}{\partial x}$. So I'm guessing that $\frac{\partial z}{\partial r}$ and $\frac{\partial z}{\partial θ}$ are unkown? And I will need to use them to differentiate again. Any help is really welcome. This is simply only part of a bigger question.   Full Question: Reasons why not to update an Ubuntu version to a newer/older kernel version I had several friends ask me to update their Ubuntu to a newer kernel without changing the version of Ubuntu. So for example, staying in 10.04 with the 3.3 Kernel version.  When having an older or present Ubuntu version, many users want to apply the newer stable/unstable kernel version to the Ubuntu version they are using thinking that it is similar to upgrading a program. So what I am looking for, are some simple answers to explain the dangers (that are pretty much bigger than the advantages) of forcing a newer kernel version in a Ubuntu release that was not meant for it.  What can I tell them or explain to them of why they should NOT update to a newer/older kernel when having an Ubuntu version that was not made for that kernel version. A known identity of binomial coefficients is that $$ \sum_i\binom{m}{i}\binom{n}{j-i}=\binom{m+n}{j}. $$ Is there a combinatorial proof/explanation of why it holds? Thanks. How to use aes-encryption in PostgreSQL? I tried aes-encryption by using following statement:  SELECT encrypt('test', 'key', 'aes');   which worked, but I am not able to decrypt the value. I inserted it in a field of datatype bytea but I'm not sure if that was the right way.   SELECT decrypt(pw, 'key', 'aes') FROM table WHERE ID = 1;   gives me the error     ERROR:  function decrypt(bytea, unknown, unknown) does not exist   LINE 1: SELECT decrypt(pw, 'key', 'aes') FROM tabelle WHERE ID = 7;                  ^   HINT:  No function matches the given name and argument types. You might need to add explicit type casts.   Does that really mean that encrypt() is an existing function, but not decrypt()? How else could I retreive aes-encrypted values? How to do joins in LINQ on multiple fields in single join I went into Live CD and activated Terminal.  Then, I typed gksu nautilus to gain temporary access to my root directory. Once the Manager window opened, I clicked on File System and navigated to the /etc/default/grub directory. I then double clicked on the Grub file to make changes to the TIMEOUT and TIMEOUT_QUIET.  I saved the file after I made the changes. Then I went back to the terminal mode and typed:  gksu update-grub   The error message I got was:     Can not find a device for / (is /dev mounted?)   I'm not sure what to do at this point. How can I run update-grub to update the changes? Thanks in advance for your help. Please be very detailed and specific with your response as I am totally new to this environment. In which way does quantum mechanics disprove determinism? Does proving (second countable) $\Rightarrow$ (Lindelöf) require the axiom of choice? If I replace my main panel, will I need to fit AFCIs? This question is about whether "circuits" can be grandfathered if the breaker or panel is changed but the circuit is otherwise not disturbed.   Code is NEC 2017.  My existing main panel has plenty of ampacity but few spaces, and thus, is totally full.  I have several potential paths for an upgrade.    One involves fitting a subpanel and moving 4 circuits (2 double-stuff breakers) there, and adding circuits there.    The other involves outright replacing the main with a very fine 60 space main panel.  No more space problems!  But what happens with AFCI and GFCI requirements? If this were a new house,  nearly all my circuits would require it, but I am grandfathered.  Will the  "new main" scenario void the grandfathering and require that nearly all circuits be upgraded to that protection?   Or can I just move over my old breakers and call it good? Is there a command that outputs ONLY the packages explicitly installed by the user? (ubuntu/debian) I have tried searching for this but there seems to be no command that can output a list of packages (ideally in Ubuntu) that I have installed, not including any dependencies. Levels or First Differences, VECM or VAR for Ultimate Impulse Response Functions? How to remove the handles from this faucet My bathroom faucet is leaking around the base of my right handle.  With previous faucets I've been able to use a set screw to loosen the handle and replace the washer.  With these, though, I can't seem to pop off the faucet handle.  Does anyone know how to remove this handle?  Does anyone know the brand of this faucet?  Update -- Nov 29th  I've already tried to get those cap ends off.  I tried to use some pliers and unscrew them, but couldn't remove it.  I tried taking a small flat head and popping off the ends.  Still nothing.  It doesn't seem like the come off.  I also tried unscrewing the handles, but they just don't see to turn for me.  Also there is definitely no set screw on the handles.  I've searched all around the faucet and found nothing indicating a set screw. Finding the index of an item in a list Given a list ["foo", "bar", "baz"] and an item in the list "bar", how do I get its index (1) in Python? The space $C^0([0;1],\mathbb{R})$ of all continuous, real-valued functions on $[0,1]$ is not reflexive.