We are making a game filled with thousands of cars. We were wondering if we need a licence to use body designs of lets say a Lamborghini, Ferrari, Impala. etc. We do not want to pay money to use the designs in our game, of course we are going to make our own car brands though. Can we use a similar body design??
We are small team which working on car racing game but we don't know about licensing process for branded cars like Nissan, Lamborghini, Chevrolet and etc.   Do we need to buy any licence for using real car brand names, models, logos,... or we can use them for free?  Second option we think about using not real brand with real models is it possible? If someone have experience with that, fell free to share it.  Any information about that is welcome.
Can a parallel computer simulate a quantum computer? Is BQP inside NP? How to start a background process in Python? Number of Homomorphisms from $\Bbb{Z}_m$ to $\Bbb{Z}_n$ Padding is missing under the &quot;Communities&quot; border line, and the list is also showing &quot;Communities (0)&quot; (maybe the reason is due to caching as it shows 0 Communities):  Generally, padding is present: WinBUGS: Multiple definitions of a node So this question is about the BUGS modeling language. So you either know it or have no clue. I'm a newbie to this so it's been driving me mad. I want to define a simple two-state hidden Markov model (HMM) where the emission of each state follows a Normal distribution. I have an array data of Nxl dimension where each row is a subject and column is a continuous variable Time associated with the subject. So in WinBUGS, I would define the model as:   for(i in 1:N) { # for each subject     # Sample the initial observation     Time[i, 1] ~ dnorm(mu[State[1]], tau[State[1]])      for(j in 2:l[i]) { # for each observation         # Sample the observed variables         Time[i, j] ~ dnorm(mu[State[j]], tau[State[j]])         # Sample the hidden states         State[j] ~ dcat(P[State[j-1], ])     } }  # P is the transition matrix of the hidden Markov chain P[1, 1:2] ~ ddirch(Pinit) P[2, 1:2] ~ ddirch(Pinit)  # Set the initial states State[1] ~ dcat(Pinit)  # Sample the initial params mu[1] ~ dnorm(200, 1.0E-6) mu[2] ~ dnorm(400, 1.0E-6)  # The precision params tau[1] ~ dgamma(0.001, 0.001) tau[2] ~ dgamma(0.001, 0.001)   Initial values have also been provided via R2WinBUGS. The model is syntactically correct. But when I run, I got this error: "multiple definitions of node State[2]"  Can you please tell me why and how to solve this? I've searched around on the error but each has their own specific case and there's not a generic solution or explanation as to why this arises. Should I be concerned that the sill plate is not lined up with the foundation? I am in the process of building a one level home in PA. After the formed concrete walls were poured and the framing began, I noticed that on one side of the house that the sill plate was flush with the edge of the foundation wall in the rear, but, by the time the sill plate got to the front it was 2 1/2" away from the edge of the foundation wall. In summary, the sill plate walks from flush with the foundation wall at the rear to 2 1/2" at the front. This happens over about a 50' run.  Any thoughts or concerns would be appreciated. Any recommendations on what sorts of questions to ask when I meet the site supervisor on Monday? How can I assign a Func conditionally between lambdas using the conditional ternary operator? When to use 'which' or 'in which' or 'that' (as relative pronouns)? Is there any way to find out if a file is a directory?  I have the file name in a variable. In Perl I can do this:  if(-d $var) { print "it's a directory\n" } "There Is"/"There are" depends on plurality of the first list element or not? It seems I put a   Bounty assigned by outside party, two lengthy, reference-citing answers, one "-1" (awarded the bounty), one "-2", two others scored "0" and "-2" respectively, the answers suggesting one or the other is correct, 73 comments and no consensus so far - and me, as the asker, lost without a clue what to think of the answers anymore -  this is no longer "Learners' Level" question, so I thought I'd bring it here and hear what the experts have to say.    Original question:  Plurality of verb depending on plurality of list elements  An edit was suggested to my sentence.     There was were an orange, some grapes, two apples and a small pile of cherries on the plate.   In my native language plurality of the verb always follows plurality of the first element on the list. There were an orange,... sounds awkward to me, no matter what follows up. My simple solution was reordering:     There were some grapes, an orange, two apples and a small pile of cherries on the plate.   But that's not the first time I faced this situation and I'd like to know what the rules of grammar say about that - was my editor overzealous or am I trying to copy rules of my language that don't apply in English?    Someone linked a  for negatives, where the situation is more clear-cut ("There is no..."). Same applies to connection with "or" apparently, per accepted answer there. Still, nothing for "and".  It seems there is a consensus that in that if the verb goes after the list, it will be plural.     an orange, some grapes, two apples and a small pile of cherries were on the plate.   There doesn't seem to be clear consensus for:     On the plate { was | were } an orange, some grapes, two apples and a small pile of cherries   Adding more to the confusion is the abbreviated form: "There's"     One last note. In North America, at least, there is a widespread use of using a singular form like "there is" and "there was", without regard for the subject item or items, and this "there is" is often shortened to "there's":           There's three apples on the table!      Could you please clarify this mess? Gandalf (as with all the Istari) did not have a corporeal form before coming to Middle-earth and was essentially ageless. We also know that Gandalf did age, albeit very slowly, while on Middle Earth. By the end of the Third Age (before battling Durin's Bane), he had the appearance of an old human male (non-Númenórean, etc) in his 70's or 80's. This leads me to wonder:  Is there any indication in Tolkien's writings that describes Gandalf's appearance (in human-looking years) when he arrived in Middle Earth? In other words, was Gandalf the Grey originally "Gandalf the Tall Dark &amp; Handsome in his 20's"?  I'm not talking about his actual age, but rather his appearance in human years. 'Some index files failed to download' while updating Don't you think people need to know what they did wrong exactly so they can fix it and get unbanned from asking questions or posting answers? Why I think tension should be twice the force in a tug of war When is $-3$ a quadratic residue mod $p$? How can I calculate magnification ratio I get by reversing a lens? I am looking for a way to mathematically determine the maximum magnification ratio that is possible/practical to achieve by reverse mounting a non-macro lens, prior to purchasing the lens.     See related questions: How to avoid overflow using \IEEEpubid on the first column? I am trying to write a journal paper using the IEEEtran.cls template.  My problem is that the Publication ID Mark overflows into my thanks section.  This is the bottom of the title page:    From the documentation of IEEEtran.cls we see that:    I included the command \IEEEpubidadjcol into the second column. This prevents the overflow in the second column as you can see in my previous image, but lets the first column run freely.  I tried including \IEEEpubidadjcol into the first column aswell, but that causes compilation errors.  Please, could you give me some hint on how to solve this problem without doing something illegal with respect to the IEEE modus operandi?  EDIT:  As the answer suggests, the problem can be solved using the \IEEEpubidadjcol command twice. When I tried this, I got an error:  Infinite glue shrinkage found in box being split   In spite of this error a correct pdf is produced. The error goes away when I do not include packages fixltx2e and dblfloatfix. In general relativity (GR), spacetime is viewed as a differentiable manifold of dimension $D$ with a metric of Lorentzian signature $(-,+,+,...,+)$.  My question is why differentiable? I want to be able to tell if the mains voltage is on or off with an Arduino.   How could I do this safely with minimal components (or components from Radio Shack)? My model has a clear plastic (or glass) dome with objects inside.  The objects appear dark.  I've tried the glass shader with color 100% RGB, with very small IOR, and using just a refraction shader.    I know Cycles has problems with caustics, but I just want broad illumination to fall clean through the glass.  The light-to-column path can ignore refraction, but is blocked or tremendously attenuated. The camera-column path needs refraction, and seems to work fine anyway.  This demo image offers all optical paths of interest:   light upon object, seen directly light upon object, seen through glass (looks okay) light through glass onto object, seen directly. This is the shadow on the lit side of the column just below the glass tubing.  I expect full illumination, but there is shadow.  There is some light, but it's diffuse light from the floor. light through glass onto object, seen through glass. This     I did at one point try non-progressive rendering, and find extremely coarse light where there shouldn't be shadow, but this is not a practical way to make nice images. I've even tried cranking up certain sampling settings to many thousands, but still get bad noise though less, at the cost of long render times. I  would like to finish my creations sometime before "Star Trek, the Generation After the Next" becomes real life, if you know what I mean.  The next image is an example. I think Transmission in Sampling was 5000, but not sure.    I'm using Cycles in Blender 2.67 on a quad core Linux machine, 16GB RAM. Machine limits have never been a problem for 3D rendering.  Possibly, I screwed up some setting when I made my startup file, and just need to fix it. OTOH maybe this is just a limitation of path tracing, or of the way Cycles does it. If that's the case, what to real-world Blender artists do when they need to produce images on a budget and schedule?  What is the practical real-world fix?