Is it possible in d&d 5e to create what is essentially a floating disk powered flying machine?

Would it be possible to create a spoke like (think old cart wheels) structure with a 21 foot diameter with a small chamber in the middle for a floating disk, that will hold itself together and is light enough for the disk to hold along with a passenger? Wondering because in a campaign I play a wizard and if it is possible could use my spell slots of all levels to essentially fly, or at least hover.

How to reproduce “resource busy and acquire with NOWAIT specified or timeout expired ” error on local machine in oracle

I am running oracle database and I am getting error as "resource busy and acquire with NOWAIT specified or timeout expired " and because of this error i am getting some other exceptions. on my local machine I am not getting this "resource busy …" error. basically I want to reproduce this error on my local machine . is there any way to reproduce this error manually on my local machine?

Plotting a small gaussian | Small values and dealing with Machine Precision

I’ve defined the following:

k := 1.38*10^-16 kev := 6.242*10^8 q := 4.8*10^-10 g := 1.66*10^-24 h := 6.63*10^-27 

and

b = ((2^(3/2)) (\[Pi]^2)*1*6*(q^2)*(((1*g*12*g)/(1*g + 12*g))^(   1/2)) )/h  T6 := 20 T := T6*10^6 e0 := ((b k T6 *10^6)/2)^(2/3)  \[CapitalDelta] := 4/\[Sqrt]3 (e0 k T6 *10^6)^(1/2)  \[CapitalDelta]kev = \[CapitalDelta]*kev e0kev = e0*kev bkev = b*kev^(1/2) 

Then, I want to plot these functions:

fexp1[x_] = E^(-bkev *(x*kev)^(-1/2)) fexp2[x_] = E^(-x/(k*T)) fexp3[x_] = fexp1[x]*fexp2[x] 

and check that this Taylor expansion works:

fgauss[x_] =   Exp[(-3 (bkev^2/(4 k T*kev ))^(1/3))]*   Exp[(-((x*kev - e0kev)^2/(\[CapitalDelta]kev/2)^2))] 

which should, e.g., as expected:

Figure 10.1

This plot came from "Stellar Astrophysics notes" of Edward Brown (also it is a known approximation).

I used this line of command to Plot:

Plot[{fexp1[x],fexp2[x],fexp3[x],fgauss[x]}, {x, 0, 50},   PlotStyle -> {{Blue, Dashed}, {Dashed, Green}, {Thick, Red}, {Thick,      Black, Dashed}}, PlotRange -> Automatic, PlotTheme -> "Detailed",   GridLines -> {{{-1, Blue}, 0, 1}, {-1, 0, 1}},   AxesLabel -> {Automatic}, Frame -> True,   FrameLabel -> {Style["EnergĂ­a E", FontSize -> 25, Black],     Style["f(E)", FontSize -> 25, Black]}, ImageSize -> Large,   PlotLegends ->    Placed[LineLegend[{"","","",""}, Background -> Directive[White, Opacity[.9]],      LabelStyle -> {15}, LegendLayout -> {"Column", 1}], {0.35, 0.75}]] 

but it seems that Mathematica doesn’t like huge negative exponentials. I know I can compute this using Python but it’s a surprise to think that Mathematica can’t deal with the problem somehow. Could you help me?

Recomendation for material, books in order to learn Machine Learning / Deep learning using Mathematica?

I know that there are plenty of resources web sites and books, MOOC to learn Machine Learning and Deep Learning mostly in Python.

However, I am so curious to know how to learn and code using Mathematica.

Wellcome and thankful for interesting comments about what version it works, libraries, books, tutorials, ebooks, etc for Mathematica users.

SQL Server Launchpad – The user has not been granted the requested logon type at this machine

I am trying to execute python scripts within t-sql on sql server 2017. With external scripts enabled, when executing a trivial script, I get the error "SQL Server was unable to communicate with the LaunchPad service. Please verify the configuration of the service". When I try to start the launchpad service, it fails to start reporting error "The user has not been granted the requested logon type at this machine" to the event logs. I have local admin on the host server and have tried to add NT Service\MSSQLLaunchpad to adminstrators and still fails for the same error. The NT Service\MSSQLLaunchpad does not have the explicit permission allow logon locally or logon as a service. I had my dba change the login to a domain user which does have those permissions and the same error occurred. Have also tried to repair the instance installation.

Any ideas of how to fix this problem?

How can I get LOAD DATA LOCAL INFILE to work for MySQL 8.0.21 on a Windows machine?

I’ve created a file: 'C:\fff.txt' which contains data for my database table. Then I’m trying to load data from that file like this:

LOAD DATA LOCAL INFILE 'C:\fff.txt' INTO TABLE fff LINES TERMINATED BY '\r\n';  

but I get the following error all the time:

ERROR 2 <HY000>: File 'C:\fff.txt' not found (OS errno 2 - No such file or directory) 

I’ve added local_infile=1 to [mysql] and [mysqld] sections of my.ini file. When I type: SHOW GLOBAL VARIABLES LIKE 'local_infile'; I can see that it’s set to 'ON'. Is there a way to solve this problem?

what is the function of a turing machine

The main question asked me to build a certain turing machine such that given a word w over {0,1}* the turing machine accepts all such words and ends in accept state with the tape string = the word apended with the number of zeros in it. I built the state diagram of this turing machine..

But now there is a question next to it which say something like –

  1. What is the function the machine you build computes ??

I dont understand what this means ?? What i can think of is that the function the question talks about is the transition function… and that just copies 0’s from w to the end of it… it doesnt computes as such anything..

Any lights on the above ??

Thanks