Traveling without EU Visa (from Netherlands to Spain) with US Refugee travel document I was planning to visit my family in Tenerife. All appointments in Spain consulate SF are booked until the end of February.  As a green card holder (ex-asylee) I have only a Refugee travel document. I can travel with this document to some EU countries without a visa (Netherlands one of them). I know that for domestic flights inside EU customs don't check the visa.  Do you think how likely I might get into the problem if I'll fly from Holland to Tenerife without Schengen Visa? What will be the circumstances?  According to this document I don't need a visa:
Travelling through the Schengen area with a Refugee Travel Document issued by the USA I just want to double check to make sure I won't run into any issues at the border of entry.  I'm a permanent resident of the USA with a green card and I have a travel document issued by the USA (I-571). Will I have any issues traveling around in the Schegen countries?  Do I need a visa? Do I have to pay any fees?
I remember reading this book in the late 80's or early 90's. It was a - sort of - semi SciFi contemporary fairy tale.  It was set in Manhattan in contemporary times, near future and (I think) late 1800's. There was a mist wall round New York that ships could disappear into and arrive out at different times.  There was a man with a white horse, the horse could fly but had forgotten how. The man is brought forward from the past but (like the horse) forgets who he is.  An engineer arrives from the future in a gigantic ocean liner and builds a bridge of light to heaven (possibly at the last millennium turn over).   It was a very involved book with a huge cast of characters that all had some part to play in the story.  In the 1800's story there was a girl suffering from consumption, she slept in a glass room on the roof of her house, open to the freezing winter air, it was what kept her alive. She was rich (the family had made money in whaling) but somehow she and The Man (the guy with the white horse, who was pretty much a nobody) met and fell in love (I think).  Some of the story was set around a lake in upstate NY, and one character started off in San Francisco (contemporary times) and traveled to the lake.  Anyone any idea what I'm talking about? What could happen if I use 2 cycle fuel in a 4 cycle engine? First off, this is NOT to be confused with the following question:    2 cycle oil is used for my weed eater. There is no way I could use a whole gallon in a year.  Sometimes I run out of gasoline for my 4 cycle lawn mower, and that 2 cycle mix fuel is sitting there getting really old.  If I run that in the lawn mower, am I simply going to create extra pollution or could the 2 cycle fuel cause any damage to the 4 cycle engine? Who is the authority -- scientists, or linguists -- on the definitions of everyday words referring to types of animals? Get file size before uploading What's usually the effective visual resolution of typical Hollywood Movies? I'm really surprised by the quality of the visuals in some new movies this year (2018). I'm curious to know in what resolution these cameras typically record to experience this quality on a cinema screen? How can we discipline a strong-willed, misbehaving 5 year-old? My 5 year old son receives and fears punishment but repeatedly exhibits the same unacceptable behaviors.  He's always been strong-willed, and is usually the kind to view a statement like "Don't do that" as an open invitation to do it.  We've tried redirection or distraction tactics, but he is still so narrowly focused on doing the original behavior.  Even worse, he will typically do the prohibited behavior and flagrantly tell us or show us that he's done it.  Repeatedly, even after punishment.  (He's in time out right now for this very thing).  He's consistently punished, yet he continues down the same self-destructive path each time.  When he is punished, we explain what he did wrong, why he's being punished, and why he shouldn't do what he was told not to do.  Sometimes he'll even tell us first why he's in trouble, so it makes me wonder if he's acting out for the inevitable negative attention he gets.  I think he gets plenty of love and positive attention- he's an only child and stays with a relative during the day.  We're trying to give him a good, fun childhood, but we need to figure out how to effectively discipline him.    His repeated misbehavior includes:   Yelling at the top of his lungs in public (stores, friends' houses, etc) Running away from us (at parks, stores, parking lots, etc) Talking back and disrespecting authority figures Hurting animals even after we explain why it's wrong Repetitive nuisance behaviors (repeating himself, banging his fists, kicking walls, intentionally crumbling food on floors, etc) Repeatedly asking us why he can't do something even after it's been explained to him Basically, most bad behaviors that young children may do, but repeated over and over again, even after discipline   He gets a warning to stop the behavior, then depending on the severity of what he's done (and where we are), he'll either go to time out or lose a privilege (such as taking away a favorite movie or missing out on an activity).  Going to time outs and losing privileges really upset him, but still do not ultimately deter him from the bad behavior.  It's like he can't help himself.  My spouse and I are getting worn down.  We try to model good behavior and encourage him to be well-mannered and respectful.  This behavior mortifies us.  It seems we can't even enjoy life as a family because our son is so disruptive and unresponsive.  Most public outings have to be cut short or eliminated because he consistently misbehaves and doesn't respond to our discipline.  After he's misbehaved, when we try to have heart-to-heart talks with him about his behavior and why we expect him to mind us, he usually has a little trouble expressing himself, and a lot of times we get the same nonsensical responses from him (Us: Why did you do [bad behavior]?  Him: Because I didn't want to).  He also doesn't like to make eye contact.  We don't usually feel like we've gotten through to him.  Is there another discipline tactic we could try?  Or does it sound like we need to see a professional at this point?  We're at a loss, and don't want things to spiral further out of control as he gets older (and even begins school).  We just want him to understand that his behavior isn't always acceptable.  Thanks for reading.  Update (from comments below): My spouse and I disagree on spanking, as we had different experiences with it. He feels it's necessary sometimes. Since our son failed to improve after time outs and taking away items/privileges, I grew to agree with him and we used it for select bad behaviors. It didn't work any better. However, when he was spanked, he was always told why. I didn't mention that we have used it because I was afraid it would distract from the original question, but since it has already come up [in comments], yes, it has been explored, but with no better results than our other tactics. What is the possessive of "you guys"? is there a quick way to sort the items of a select element? Or I have to resort to writing javascript?  Please any ideas.  &lt;select size="4" name="lstALL" multiple="multiple" id="lstALL" tabindex="12" style="font-size:XX-Small;height:95%;width:100%;"&gt; &lt;option value="0"&gt; XXX&lt;/option&gt; &lt;option value="1203"&gt;ABC&lt;/option&gt; &lt;option value="1013"&gt;MMM&lt;/option&gt; &lt;/select&gt; How can I obtain a Cauchy distribution from two standard normal distributions? I am interested in      Let $X\sim N(0,1), Y \sim N(0,1)$ independently. Show $\frac{X}{X+Y}$   is a Cauchy random variable.   My work:  $f_{X,Y}(x,y)=\frac{1}{2\pi} e^{\frac{-1}{2}(x^2+y^2)}, -\infty&lt;x,y&lt;\infty$ by independence  Let $U=\frac{X}{X+Y},V=X+Y$. (Is there a better $V$ to choose for this bivariate transformation?)  Then, $X=UV, Y=V - UV$. So, $|J|=V$.  $f_{U,V}(u,v)=f_{X,Y}(uv,v-uv)|J|=\frac{v}{2\pi}e^{\frac{-v^2}{2}(2u^2-2u+1)},-\infty&lt;u&lt;\infty$  $f_U(u)=\frac{1}{2\pi}\int_{-\infty}^{\infty}ve^{\frac{-v^2}{2}(2u^2-2u+1)}dv$. Let $y=\frac{v^2}{2}(2u^2-2u+1)$, so $dy=v(1+2u^2-2u)dv$. Then,  $f_U(u)=\frac{1}{2\pi(2u^2-2u+1)}\int_0^{\infty}e^{-y}dy=(\pi[(\frac{u-1/2}{2})^2+1])^{-1}, -\infty&lt;u&lt;\infty$,   which is not exactly a Cauchy distribution. Where did I mess up? More importantly, how would you proceed in solving this problem? Infinite amount of flags I have been going through some old posts, flagging them as necessary. But I have noticed that the number of posts that I am able to flag is continually staying at ten. It seems that the new flagging system has messed this up.  I am able to keep flagging posts even after 10, so I know it isn't a UI bug. This is a very big problem, because I can flag infinitely many times. And I am pretty sure this isn't the intended behavior of the overlords This isn't because I am being awarded more flags. I flag more than 13 posts in 5 minutes, and I can keep going without restriction  Some of the flags were accepted, so now my number is up to 13. But it is still staying at 13 Too much space between full paragraph and subequations env I have a document using subequations and the parskip package. If the paragraph before a subequations environment is completely filled up to the last line, then additional vertical whitespace is introduced between this paragraph and the following subequations. I guess this is a bug, but I'm not sure, nor do I have enough TeX knowledge to try and fix it. How can I fix this whitespace issue?  Below is a MWE which shows the behaviour, at least on LaTeX2e &lt;2003/12/01> with pdfeTeX 3.141592-1.21a-2.2 (unfortunately on this machine only an old tetex distribution is installed).  \documentclass[a4paper,11pt]{article}  \usepackage{parskip} \usepackage{amsmath}  \begin{document}  The subequations environment provides a convenient way to number a foos \begin{subequations}\label{foo}   \begin{align}     x^2 + y^2 &amp;= z^2\\     a &amp;= b + c   \end{align} \end{subequations}  \end{document} proving combinatorics identity - $\sum_{k=0}^m{n-k \choose m-k}={n+1 \choose m}$ Question :   Determine all natural numbers n such that 3   divides $n\cdot2^{n}+1$  Actually I don't have any ideas to approach but  my efforts :   I see $n=1,2,7,8,13,14$ so I think :   $n=6k+1$ and $n=6k+2$ $k\in \Bbb{N} $  If I'm not wrong but I don't know how ? I prove it ? How to close ports / disable services? I just portscanned my system with nmap and got the following result:  PORT    STATE SERVICE 25/tcp  open  smtp 631/tcp open  ipp   what are these services and how i do disable them? probably i don't need them. $\hbar \rightarrow 0$ in quantum mechanics We often see a limit $\hbar \rightarrow 0$ in quantum mechanics and sometimes it's related with symmetry breaking. Can someone briefly write the story behind this limit? The left-nav is great - I like it, users who don't can disable it. Perfect world. Now it's stickied it's always there too, which is really useful.  When I'm navigating in areas not directly linked to in the left nav and have scrolled down, I often want to re-use the other navigation. This means scrolling up. Which is fine, of course it's how websites work.  However, if the left-nav had a "Top" link which took the user to the very top of the page it would be great for getting back to specific contextual menus and things that are not linked to in the left-nav.  For example, if I'm viewing questions on a specific tag and I've scrolled down, I sometimes want to get back up to the top to remove a tag, or change from "Latest" to "Featured" etc. Although clicking the "Questions" link in the left-nav takes me back to the top, it removes the tag(s) I was searching with.  There are other use cases where this would be useful, like long questions and answers (Etc). So I think a "Top" link in the left nav would be very useful.    I think this is different to the  as it doesn't mention the left-nav, and my question is suggesting this idea because we have a good place to put it and it'll be a useful addition to the left-nav. The third formula on the  states that $$\varphi (mn) = \varphi (m) \varphi (n) \cdot \dfrac{d}{\varphi (d)} $$ where $d = \gcd(m,n)$.  How is this claim justified?  Would we have to use the Chinese Remainder Theorem, as they suggest for proving that $\varphi$ is multiplicative? Check variable equality against a list of values How can I force a long string without any blank to be wrapped? 2.8 mesh select mode hotkey changed The hotkey for mesh select mode (vertex, edge, face) while in edit mode Ctrl + Tab has been reassigned in 2.8. Is there another hotkey assigned for this?