Image:Sissys.png

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[edit] Summary

[edit] Summary

An epidemiological graph for the SIS model. S represents the number of susceptibles, I the number of infectious people; When recovered, people become susceptible again. Graph generated using MATLAB code:

[edit] sirsys.m program

P=60
N=500
options = odeset('RelTol',1e-4,'AbsTol',1e-4);
beta = 0.001;
v= 0.1;
[T,Y]=ode45(@sissys1,[0 P],[N 1],options,beta,v);
%plot(T,Y(:,1),T,Y(:,2));
plot(T,Y(:,1),'.',T,Y(:,2),'.');

[edit] sissys1.m function

function dy = sirsys1(t,y,beta,v)
dy = zeros(2,1); % a column vector
dy(1) = - beta*y(1)*y(2)+v*y(2);
dy(2) = beta*y(1)*y(2)-v*y(2);
end

[edit] Licensing

Public domain I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.


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[edit] See also

Image:Sirsys-p9.png

[edit] Licensing

Public domain I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.


Afrikaans | Alemannisch | Aragonés | العربية | Asturianu | Български | Català | Česky | Cymraeg | Dansk | Deutsch | Eʋegbe | Ελληνικά | English | Español | Esperanto | Euskara | Estremeñu | فارسی | Français | Galego | 한국어 | हिन्दी | Hrvatski | Ido | Bahasa Indonesia | Íslenska | Italiano | עברית | Kurdî / كوردی | Latina | Lietuvių | Latviešu | Magyar | Македонски | Bahasa Melayu | Nederlands | ‪Norsk (bokmål)‬ | ‪Norsk (nynorsk)‬ | 日本語 | Polski | Português | Ripoarisch | Română | Русский | Shqip | Slovenčina | Slovenščina | Српски / Srpski | Svenska | ไทย | Tagalog | Türkçe | Українська | Tiếng Việt | Walon | ‪中文(简体)‬ | ‪中文(繁體)‬ | zh-yue-hant | +/-

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Date/TimeDimensionsUserComment
current12:05, 19 June 2006560×420 (5 KB)Bye (== Summary == An epidemiological graph for the SIS model. S represents the number of susceptibles, I the number of infectious people; When recovered, people become susceptible again. Graph generated using MATLAB code: ==== sirsys.m program==== <pre> P=60 )
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