# Appendix a to applied probability: directory of m-functions and m  (Page 17/24)

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cdbn.m Plots a continuous graph of a distribution function of a simple random variable (or simple approximation).

% CDBN file cdbn.m Continuous graph of distribution function % Version of 1/29/97% Plots continuous graph of dbn function FX from % distribution of simple rv (or simple approximation)xc = input('Enter row matrix of VALUES '); pc = input('Enter row matrix of PROBABILITIES ');m = length(xc); FX = cumsum(pc);xt = [xc(1)-0.01 xc xc(m)+0.01];FX = [0 FX FX(m)]; % Artificial extension of range and domainplot(xt,FX) % Plot of continuous graph gridxlabel('t') ylabel('u = F(t)')title('Distribution Function')

simple.m Calculates basic quantites for simple random variables from the distribution, input as row matrices X and $PX$ .

% SIMPLE file simple.m Calculates basic quantites for simple rv % Version of 6/18/95X = input('Enter row matrix of X-values '); PX = input('Enter row matrix PX of X probabilities ');n = length(X); % dimension of X EX = dot(X,PX) % E[X]EX2 = dot(X.^2,PX) % E[X^2] VX = EX2 - EX^2 % Var[X]disp(' ') disp('Use row matrices X and PX for further calculations')

jddbn.m Representation of joint distribution function for simple pair by obtaining the value of ${F}_{XY}$ at the lower left hand corners of each grid cell.

% JDDBN file jddbn.m Joint distribution function % Version of 10/7/96% Joint discrete distribution function for % joint matrix P (arranged as on the plane).% Values at lower left hand corners of grid cells P = input('Enter joint probability matrix (as on the plane) ');FXY = flipud(cumsum(flipud(P))); FXY = cumsum(FXY')';disp('To view corner values for joint dbn function, call for FXY')

jsimple.m Calculates basic quantities for a joint simple pair $\left\{X,Y\right\}$ from the joint distrsibution $X,Y,P$ as in jcalc. Calculated quantities include means, variances, covariance, regression line, and regression curve (conditional expectation $E\left[Y|X=t\right]$ ).

% JSIMPLE file jsimple.m Calculates basic quantities for joint simple rv % Version of 5/25/95% The joint probabilities are arranged as on the plane % (the top row corresponds to the largest value of Y)P = input('Enter JOINT PROBABILITIES (as on the plane) '); X = input('Enter row matrix of VALUES of X ');Y = input('Enter row matrix of VALUES of Y '); disp(' ')PX = sum(P); % marginal distribution for X PY = fliplr(sum(P')); % marginal distribution for YXDBN = [X; PX]';YDBN = [Y; PY]';PT = idbn(PX,PY); D = total(abs(P - PT)); % test for differenceif D>1e-8 % to prevent roundoff error masking zero disp('{X,Y} is NOT independent')else disp('{X,Y} is independent')end disp(' ')[t,u] = meshgrid(X,fliplr(Y));EX = total(t.*P) % E[X] EY = total(u.*P) % E[Y]EX2 = total((t.^2).*P) % E[X^2] EY2 = total((u.^2).*P) % E[Y^2]EXY = total(t.*u.*P) % E[XY] VX = EX2 - EX^2 % Var[X]VY = EY2 - EY^2 % Var[Y] cv = EXY - EX*EY; % Cov[X,Y]= E[XY] - E[X]E[Y] if abs(cv)>1e-9 % to prevent roundoff error masking zero CV = cvelse CV = 0end a = CV/VX % regression line of Y on X isb = EY - a*EX % u = at + b R = CV/sqrt(VX*VY); % correlation coefficient rhodisp(['The regression line of Y on X is: u = ',num2str(a),'t + ',num2str(b),])disp(['The correlation coefficient is: rho = ',num2str(R),])disp(' ') eYx = sum(u.*P)./PX;EYX = [X;eYx]';disp('Marginal dbns are in X, PX, Y, PY; to view, call XDBN, YDBN') disp('E[Y|X = x]is in eYx; to view, call for EYX') disp('Use array operations on matrices X, Y, PX, PY, t, u, and P')

#### Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
research.net
kanaga
Introduction about quantum dots in nanotechnology
what does nano mean?
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
for screen printed electrodes ?
SUYASH
What is lattice structure?
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
what's the easiest and fastest way to the synthesize AgNP?
China
Cied
types of nano material
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
how did you get the value of 2000N.What calculations are needed to arrive at it
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Berger describes sociologists as concerned with
A fair die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive