I have a Netherlands visa. My plans have changed drastically. I would be staying most number of days in Spain. Can i have my POE in Madrid? Will it be a problem if neither my POE not my maximum number of days are not in the country from where i got my Schengen visa?
In case, if I get a multiple-entry Schengen visa in one of the embassies in Ukraine, Kyiv - should my first trip be to the country which issued the visa?  Any there any requirements of this sort? Does this condition vary depending on embassy which issued the visa?  What are the possible consequences on not visiting that country first? Does it somehow depend on country where the embassy is (i.e. non-Schengen and not EU members)?
I would like to draw an arrow like this using TikZ:    This is taken from . I didn't succeed in reproducing the arrow; is somewhat beyond my (extremely limited) TikZ abilities. I don't need all the workflow stuff. I simply want to draw such an arrow at a certain place in my text, e.g. -->  \documentclass{article} \usepackage{&lt;???&gt;} \usepackage{tikz} \usetikzlibrary{&lt;???&gt;} \begin{document} Donec vehicula augue eu neque. Pellentesque habitant morbi \tikz &lt;???code for the arrow???&gt; ; tristique senectus et netus \end{document}   PS: Some explanations in your solution would be much appreciated, otherwise it will be difficult to customize it. Virtual Host not working as expected when I'm using .dev domain extension I'm doing a Laravel project and I need to set up a virtual host example.dev in my system. For that I've created a copy of 000-default.conf and named it as example.dev.conf and placed in /etc/apache2/sites-available. The contents of the file is given below (comments removed):  &lt;VirtualHost *:80&gt;     &lt;Directory /var/www/html/example/public/&gt;         Options Indexes FollowSymLinks MultiViews         AllowOverride All         Require all granted     &lt;/Directory&gt;      ServerName example.dev     ServerAlias www.example.dev      ServerAdmin admin@example.dev     DocumentRoot /var/www/html/example/public      ErrorLog ${APACHE_LOG_DIR}/error.log     CustomLog ${APACHE_LOG_DIR}/access.log combined &lt;/VirtualHost&gt;   Then I've enabled the site using a2ensite command and disabled 000-default.conf using a2dissite command. Then it will open my project when I try localhost (/var/www/html) in my browser and not example.dev. The virtual host example.dev always produce "The site can't be reached" error in browsers.  Any suggestions? My Father passed away - next test(s) on what remains of his DNA sample? I posted this general question over at the forum on FamilyTreeDNA. Though I received a reply, there is still no answer to my question, so I thought I'd try my luck at posting here.  Anyhow, in early 2009 I bought two kits for the Genographic Project and dutifully had my father do his cheek swabs: one kit for his Y-Chromosome, and one for his mtDNA. Once that was completed, I had his samples transferred to Family Tree DNA.  Then, late in 2009 I paid to have an mtFullSequence done on his mtDNA sample.  My father passed away in 2015. In early 2016, I phoned FTNDA to discuss. The first thing they did was arrange to merge his two original samples into one kit. Then, they suggested doing Family Finder. I did that and recently obtained the interesting results.  So, all told what I have done on my father is:   Y-12 (originally done for the Genographic Project) mtFullSequence Family Finder   My father's Y Haplogroup is R-M269 and I am being presented with the M343 SNP pack on FTNDA.  My question is, what now? My father is gone so the sample that remains with FTDNA is old and finite (their customer service says they still have "one container" of his DNA). His siblings have all passed away -- unfortunately, with no samples taken. What is the best way to make use of the sample of my father's DNA that is left?  Should I refine the Y-Chromosome to Y-111? That seems the most natural (though I'm a male and carry it too). Should any SNP tests best be done on his remaining sample as opposed to on me? Or, should I do nothing and just let his 2009 samples continue to sit at FTDNA?  By phone, FTDNA said that they should have enough left to do the Y-111 and a SNP pack which is great, but I'd love to know independent of their customer service if that is the wisest way to make use of the remaining DNA sample which they have?  Full disclosure: I did have my father do 23andMe in 2010 and I did have his blood drawn and sent to a DNA Bank. I hope to never touch his banked DNA (except maybe to do a full sequence someday), but at least it does exist. My question now is solely how to best make use of my father's remaining sample at Family Tree DNA? 1970s scifi/horror novel where protagonist is used by a crablike creature to feed its larvae, goes mad, and is defeated by retraumatising him Why is the Apps flash storage so high and how can it be reduced? This is the disk storage info:    This is the Applications folder info:    Why is the storage usage so high and how can it be reduced? This is on a MacBook Pro Retina 13" with OSX 10.9.5.  Edit: I had tried all the suggestions made by @user3439894 in his answer but didn't mention it before posting. I frequently create labels that follow the same format: white text on a 75% opaque black background, with 10px of margin around the text. Currently, I have to manually build these labels, which takes a lot of work.  In one method, I write the text, figure out its height and width, then create a separate rectangle and place it behind it. This takes a lot of clicking around for every label.  In the other method, I draw out a text box, select it directly, give it the correct background and margins, and then insert the text. However, I must then resize the box manually, meaning more clicking around and greater imprecision. There doesn't seem to be a way to directly select a text box once it has text inside it.  I tried using the script contained in  to resize the text box to the content, but it only resizes the box vertically, and removes my color and margins.  Does anyone have suggestions on how to resolve these problems, or for a better method? I'm using CS3. If I am talking to somebody about a certain group of people in the third person, and then want to refer to the person I am talking with as one of those people, which do I say?     One of them were you      One of them was you. When should I use exposure compensation? When should I use exposure compensation, rather than ISO, shutter speed or aperture? How can I calculate the R-squared of a regression with arima errors using R? If I have an arima object like a:  set.seed(100) x1 &lt;- cumsum(runif(100)) x2 &lt;- c(rnorm(25, 20), rep(0, 75)) x3 &lt;- x1 + x2  dummy = c(rep(1, 25), rep(0, 75))  a &lt;- arima(x3, order=c(0, 1, 0), xreg=dummy) print(a)   .  Series: x3  ARIMA(0,1,0)                      Call: arima(x = x3, order = c(0, 1, 0), xreg = dummy)   Coefficients:         dummy       17.7665 s.e.   1.1434  sigma^2 estimated as 1.307:  log likelihood = -153.74 AIC = 311.48   AICc = 311.6   BIC = 316.67   How do calculate the R squared of this regression? Is there a way to target the arrow from an OP bow via command block? I am trying to make an effect trail for a specific weapon in MC, a bow with power 120.  I want to use a command block to target any arrow with the damage it should be doing (63) and summon a trail of splash potions.  I also want to kill any arrow entities that have inGround=True  Is there any way to do this or do I have to come up with something else?  Attempt:  /execute @e[type=Arrow,damage=63,inGround=0] ~ ~ ~ summon ThrownPotion ~ ~ ~ {Potion:{id:potion,Damage:8197}} /kill @e[type=Arrow,inGround=True]   Each unfortunately just affects all arrows.  Is this even possible? I understand that the Istari - the only other Maiar besides the Balrog to come into close proximity to the Ring - are constrained within a mortal body and subject to its mortal weaknesses, which renders them vulnerable to the Ring's domination and corruption. However, what is to stop Gandalf from returning to his true form, picking up the Ring, and just walking all the way to Mount Doom? Sauron is too weak at the time; he would have been able to do nothing but watch helplessly and pray his mortal armies can defeat a Ring-bearing Gandalf.  Is Gandalf's decision to abide by the Valar's will to the end the only thing holding him back from this particular option? Are there enchantments in place to disable his ability to revert to Maia form, such that the option was never there to begin with? Or would he, even in Maia form and free of mortal weaknesses, still be vulnerable to domination and corruption by the Ring?  The One Ring is forged with the essence of Sauron to dominate and rule the minds of lesser beings. However, Sauron is only a Maia - albeit the highest-ranking in Morgoth's following. Fellow Maiar would be his equal (at least in rank), while the Valar are certainly superior in power to him. If an Ainu becomes a Ringbearer, will he/she eventually fall to Sauron's will too, or at least succumb to the corruption of the Ring's dark power? Noticing that Newtonian gravity and electrostatics are equivalent, is there also a relationship between the general relativity and electrodynamics? I followed the beginner steps for creating a .  The child theme was created and it appears as an option on my Themes page. But unlike the other Themes on the page (including its parent), there is no preview.  The other themes ("Twenty Twelve," "Twenty Thirteen," and "Twenty Fourteen") are all listed with an image preview.  My child theme ("Twenty Fourteen Child") does not have any image. The child theme can be applied without issue.  This issue arises when I create child themes from other themes as well. Any ideas why this is happening and if I can resolve? I have been creating a table from mysql result , but its printing the html markup only and says controller must return a response . what may be the reason ?      LogicException: The controller must return a response ((5   rows)group_nameparent_nameEditDeleteSelect   itemsL2V9http://192.168.1.236/mailusers/usergroup/edit/6>edithttp://192.168.1.236/mailusers/usergroup/delete/6>delete           L3v3http://192.168.1.236/mailusers/usergroup/edit/7>edithttp://192.168.1.236/mailusers/usergroup/delete/7>deleteAdminsV6http://192.168.1.236/mailusers/usergroup/edit/8>edithttp://192.168.1.236/mailusers/usergroup/delete/8>deleteL4Vodafonehttp://192.168.1.236/mailusers/usergroup/edit/9>edithttp://192.168.1.236/mailusers/usergroup/delete/9>deleteVCNONetworkhttp://192.168.1.236/mailusers/usergroup/edit/12>edithttp://192.168.1.236/mailusers/usergroup/delete/12>delete given). in     Symfony\Component\HttpKernel\HttpKernel->handleRaw() (line 157 of     vendor/symfony/http-kernel/HttpKernel.php). What is wrong with this query? (Unknown error parsing query) When I run the following query in query editor I get this error.  Error     Unknown error parsing query   Query  SELECT Id, OwnerId,Account.OwnerId FROM Contact where OwnerId = Account.OwnerId limit 100   Does anybody know what the problem is? Why does English spelling use silent letters? Why have a letter in a word when it’s silent in pronunciation, like the b in debt?  Can anyone please clarify my uncertainty here? Nonconstant polynomials do not generate maximal ideals in $\mathbb Z[x]$ Let $f$ be a nonconstant element of ring $\mathbb Z[x]$. Prove that $\langle f \rangle$ is not maximal in $\mathbb Z[x]$.   Let us assume $\langle f \rangle$ is maximal. Then $\mathbb Z[x] / \langle f \rangle$ would be a field. Let $a \in \mathbb{Z}$. Then $a + \langle f \rangle$ is a nonzero element of this field, hence a unit. Let $g + \langle f \rangle$ be its inverse. Then $a g - 1 \in \langle f \rangle$, hence $ag(x)-1 = f(x)h(x)$ for some $h \in Z[x]$, hence $ag(0) + f(0)h(0) = 1$, thus $(a,f(0))=1$ for all $a \in \Bbb Z$, contradiction, hence the proof.  Is my argument correct? Is there any other method? What can I do to increase passive HF RFID read range? I am working on a prototype, one function of which is to detect whether an object is "in range" by a few cm. Right now I'm just using an Arduino and a cheap  that operates at 13.56 MHz:    I've successfully gotten it to detect the tag, but only at a distance of about 3-4 cm when the tag is oriented parallel to the antenna.  According to my  , the HF band allows read ranges of between 10 cm and 1 m for passive tags, depending on factors like antenna size, tag size and orientation, and transceiver power.  I realize this inexpensive reader is not up to task as-is, but I'm interested in building something that achieves read ranges of 15-20 cm.  Some criteria:   No need to read multiple tags; only whether one tag is in range or not. No need to write to the tag. Cannot use an active tag.   I'm not experienced with RFID reader construction (yet) but am interested in knowing what I should pursue.  Here are some things I've considered:   Ditch the embedded antenna on the cheap RFID reader and construct my own, larger antenna. I'd need to see if the onboard  is up to the task of providing additional power. Look for a different IC around which to build a reader from scratch. Find a ready-made solution instead of trying to build one (more cost-effective?). Use something other than RFID for simple proximity detection.   I am experienced with microcontrollers and basic electronics, and have made audio and lighting projects, but this is a first with RFID. Since I don't need to read multiple tags, which RFID is suitable for, I've considered maybe some sort of magnet and hall-effect sensor, but the range does not seem adequate. I considered using an ultrasonic proximity detector, but the application calls for detecting the tagged object while ignoring untagged ones (ultrasonic would produce false positives on untagged objects). I've considered some sort of reflective surface placed on the object, and detecting reflected light, but the object orientation is not reliable enough to maintain alignment.  So, in a nutshell, What modifications can I make to my existing reader, or what alternate technology should I pursue to achieve 15-20 cm detection of a passively tagged object?  I plan on connecting whatever proximity detector is used to a microcontroller using SPI. How can I determine the list of files in a directory from inside my C or C++ code?  I'm not allowed to execute the ls command and parse the results from within my program. How to implement "confirmation" dialog in Jquery UI dialog?