Unrendered Pixels (Holes) in Blender Internal Render
Cause of Alpha or Black Artefacts in Render
Is it possible to add images to comments? I was wondering if it is possible to post a comment with an image.  Recently, during a question about data-visualization in Cross Validated, there was a controversy about using one type of chart for another.   I had posted a question about pie-charts, after reading some references I decided to build an example and clarify the point of using waffle-chart vs pie-chart. In a way, my example was not an answer it was more properly a comment on waffle-charts. But it seems to be impossible to post a comment with an image (Maybe, there is a way but I can't figure out how).  I don't know if it is relevant to post images in comments in other SO sites. So, if there is no way to post images in comments... why not making it possible? And if there is a way to post an image with a comment, how I can do it? I have a BA degree in Biochemistry.  I worked at a research lab for 5 yrs before I quit my job to be a stay at home.  Now I want to change my career and get into the field of QA.  I don't have much knowledge as to what the best way is to get into this field.  I cant afford to take online courses, so I want to self teach it to me.  Any suggestions and help would be greatly appreciated. SQL Server 2008 server cannot connect to itself with alias name or "localhost" We have a SQL Server 2008 ENT 64bit SP3 server running Server 2008 R2 Standard SP1 64-bit.  This is also a windows/sql clustered environment.  There is the cluster alias for the server, and then we have 2 AD DNS aliases as well for the server  Suddenly I can't connect to the sql instance in Management Studio, or with a Powershell Invoke-SQLcmd IF I am doing it from that actual server, when using one of the dns alias names, or "localhost".  If I use the Cluster alias name it works and if I use the other dns alias name it works.  Using management studio with the non-working dns alias I get "Login failed. The login is from an untrusted domain and cannot be used with Windows authentication."  If I use localhost, I get "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 2)"    Shared Memory and TCPIP are enabled in SQL Server Config manager but named pipes is not.  But we've NEVER had named pipes enabled, and don't have it enabled on any of our other sql servers and they're set up the same (clustering, dns aliases...etc) and are having no issues.  I've Googled around and had a view people suggest listing what other SQL servers it can see (cmd prompt sqlcmd -L)  If it do it from a good server I see all other servers on my network including the "bad" one.  If I do that command from the "bad" server, I get no results at all.  Pretty much checked everything from this blog and it's all ok except the sqlcmd -L issue I just mentioned above.    Windows firewall is not enabled.  This was working just fine for a couple of years.  I'm not sure when this started happening, but I know that at some point, it was not happening.  And the other kicker...it's only happening locally to this server.  If I connect with management studio or run a powershell Invoke-Sqlcmd from another machine, or my local machine connecting to the "bad" server, it works fine no matter what alias I use.  I'm stumped.  I think it sounds like an issue with the AD alias (there are 2 ad aliases, 1 works locally the other doesn't)...but not being able to connect with localhost makes me question that.  any help is greatly appreciated. I  here on MSO today, but it was found to have been asked .  I'm not concerned by this (better to be found by more than one user) but, I noticed that the wording in the closure statement is factually incorrect:    No it doesn't have an answer - Not even a sniff of one!  This statement, logically, should be factually accurate and reflect the existence of answers and include singular/plural references to them - or at a minimum use language that covers both scenarios.  Edit: As a result of my question,  and the bug in question has been remedied, but this question still remains valid. Let $V,W$ be two vector spaces over a field $F$ and let $f:V \to W$ be a linear mapping. I have going over some facts about vector spaces (not necessarily finite dimensional) and I have been trying to apply the rank nullity theorem to derive a simple lemma.  I have not been able to complete the proof and was wondering if I need to use something other then $\ker f + \mathrm{Im}\; f = \dim V$.  How do we show that for ever vector subspace $K \subset W$, $ \dim(f^{-1}(K)) = \dim(K \cap \mathrm{Im}\; f) + \dim( \mathrm{Ker}\; f)$? How to change keyboard layout via command line cmd.exe on Windows XP/7? Is is possible to change the keyboard layout via command line on Windows XP/7? Can magnets rotate infinitely? What does "Package  has no installation candidate" mean? What does the above Error mean? What is an installation candidate?  I was trying to do  sudo apt-get install munin-memcached     and I get this message:  Reading package lists... Done Building dependency tree        Reading state information... Done Package munin-memcached is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package munin-memcached has no installation candidate   I googled for the problem and someone said to do a apt-get upgrade but it still did not solve my problem. I would like to know how to put a time delay in a Python script. Get latest Flash player on Ubuntu Suppose $X_1,\ldots,X_n$ are a random sample of $U(-\theta,\theta)$ with $\theta&gt;0$. How can find $$ E\left(|X_1|\ \big|\max |X_i| \right) $$ that $1\leq i\leq n$? Difference between $(this) and event.target? gluten free hot cross buns My processor is using a big part of my RAM memory as cache and I want to clean it up because of that; will it prejudice something? Movie Clip On Plane In blender cycles render engine, how do I put a movie clip on a plane so it displays the video? I want the video to be on the plane if there is a way. Note: this is intended to be a canonical question about summoning sickness.  "Summoning sickness", broadly, is the rule that stops you from attacking or paying {T} costs with a creature that you just played. But how exactly does it work? How does it interact with other rules and effects?  For example, if I'm trying to figure out how a creature is affected:   Does the status matter (tapped/untapped, face down/face up, etc.)? What if it came into play, but I didn't cast it? What if it's a token? What if it was on the battlefield when my turn started, but it wasn't a creature? What if it stops being a creature? What if it's a creature and also another card type? What if it's a double-faced card that just transformed? What if it changes control? What if it's a copy of another creature? Which of the creature's activated abilities can I use? Are any of its other abilities affected? Can I tap the creature to pay a cost that is not a {T} cost?   (These examples are primarily taken from questions about summoning sickness that have already been asked on the site) Can you choose which version of a game to play on Steam? What are the similarities/differences between the behaviors of Quantum particles and bouncing droplets? Given that $a,b,c$ are distinct positive real numbers, prove that $(a + b +c)\big( \frac1{a}+ \frac1{b} + \frac1{c}\big)&gt;9$   This is how I tried doing it:  Let $p= a + b + c,$ and $q=\frac1{a}+ \frac1{b} + \frac1{c}$.  Using AM>GM for $p, q$, I get:  $$\frac{p+q}{2} &gt; {(pq)}^{1/2}$$ $$\sqrt{(a + b +c)\bigg(\frac1{a}+ \frac1{b} + \frac1{c}\bigg)} &lt; \frac{\big(a+\frac1{a} + b+\frac1{b} + c+\frac1{c}\big)}2$$ And for any $x\in \mathbb{R}, \space \space x+\frac1{x}≥2.$ Thus,   $$(a + b +c)\bigg(\frac1{a}+ \frac1{b} + \frac1{c}\bigg)&lt;9, $$ which is the opposite of what had to be proven. What did I do wrong? How do I add VBA in MS Office? I've seen posts showing answers which use VBA () code/macros, however, I've also noted additional comments afterwards about how to use the VBA (how to implement and execute it). I'm hoping this will help just to get the code executed.   So, my question is:  I have some VBA code. How do I add VBA to my MS Excel or Word or Outlook project?