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view/download model file: facilities_and_knowledge_in_international_trade.nlogo
The model deals with the research of Hausman and Hidalgo about the complexity, according to which an economy is complex when is able to product different items. This ability is given by the knowledges that people have, both explicit knowledge (what the person is conscious to know) and tacit knowledge (the deep knowledge). The model also deals with the growth of trade and knowledge relating to facilities.
The four states are represented by four patches of different colours. The four populations are represented by turtles of different colours. When people of the same population meet, they swap their knowledges, so the level of knowledges of the whole population grow; the growth of tacit knowledge is slower than that of explicit, because it is deeper and so more difficult to modify. When people from different countries meet, they trade and swap their knowledges. The possibility people have to move (and so to meet each other) is influenced by the level of facilities in the pacth on which they are at the moment.
Before playing SETUP it is possible to modify by sliders:
See the report.
It could be interesting to try to modify the values of knowledges and facilities in order to notice of the trades modify.
It could be interesting to create a relationship between knowledges and the level of facilities: maybe facilities may grow when the knowledges grow.
(interesting or unusual features of NetLogo that the model uses, particularly in the Code tab; or where workarounds were needed for missing features)
(models in the NetLogo Models Library and elsewhere which are of related interest)
This model was created as final exam of the cours “dal cervello sociale all’emergere della società”, directed by Prof. Ferdinando Rossi, in Scuola di Studi Superiori dell’Universià di Torino. The model was created by Alberto Parmentola, with the supervision of Prof. Pietro Terna, that I thanks heartily.
breed [highlanders] breed [bellevuers] breed [unionists] breed [coldwaterers] globals [highlands-transaction-number bellevue-transaction-number eastern-union-transaction-number coldwaters-transaction-number] to setup clear-all reset-ticks ask patches [setup-highlands setup-bellevue setup-eastern-union setup-coldwaters] create-highlanders 5 [setxy random-float min-pxcor random-float max-pycor set color orange] create-bellevuers 5 [setxy random-float min-pxcor random-float min-pycor set color black] create-unionists 5 [setxy random-float max-pxcor random-float max-pycor set color white] create-coldwaterers 5 [setxy random-float max-pxcor random-float min-pxcor set color yellow] set highlands-transaction-number 0 set bellevue-transaction-number 0 set eastern-union-transaction-number 0 set coldwaters-transaction-number 0 end to go ask highlanders [if pcolor = red [visit-highlands] if pcolor = green [visit-bellevue] if pcolor = pink [visit-eastern-union] if pcolor = blue [visit-coldwaters] ] ask bellevuers [if pcolor = red [visit-highlands] if pcolor = green [visit-bellevue] if pcolor = pink [visit-eastern-union] if pcolor = blue [visit-coldwaters]] ask unionists [if pcolor = red [visit-highlands] if pcolor = green [visit-bellevue] if pcolor = pink [visit-eastern-union] if pcolor = blue [visit-coldwaters]] ask coldwaterers [if pcolor = red [visit-highlands] if pcolor = green [visit-bellevue] if pcolor = pink [visit-eastern-union] if pcolor = blue [visit-coldwaters]] tick end to setup-highlands if (pxcor < 0) and (pycor >= 0) [set pcolor red] end to setup-bellevue if (pxcor < 0) and (pycor < 0) [set pcolor green] end to setup-eastern-union if (pxcor >= 0) and (pycor > 0) [set pcolor pink] end to setup-coldwaters if (pxcor >= 0) and (pycor <= 0) [set pcolor blue] end to visit-highlands if facilities-in-highlands = 0 [if random-float 1 < 0.05 [move-in-highlands]] if facilities-in-highlands = 1 [if random-float 1 < 0.10 [move-in-highlands]] if facilities-in-highlands = 2 [if random-float 1 < 0.30 [move-in-highlands]] if facilities-in-highlands = 3 [if random-float 1 < 0.50 [move-in-highlands]] if facilities-in-highlands = 4 [if random-float 1 < 0.70 [move-in-highlands]] if facilities-in-highlands = 5 [if random-float 1 < 0.90 [move-in-highlands]] end to move-in-highlands lt random 360 forward 1 if count highlanders in-radius 1 > 0 [if color = orange [plus-highlanders-knowledge] if color = black [plus-highlanders-knowledge plus-bellevuers-knowledge highlands-commerce bellevue-commerce] if color = white [plus-highlanders-knowledge plus-unionists-knowledge highlands-commerce eastern-union-commerce] if color = yellow [plus-highlanders-knowledge plus-coldwaterers-knowledge highlands-commerce coldwaters-commerce]] end to visit-bellevue if facilities-in-bellevue = 0 [if random-float 1 < 0.05 [move-in-bellevue]] if facilities-in-bellevue = 1 [if random-float 1 < 0.10 [move-in-bellevue]] if facilities-in-bellevue = 2 [if random-float 1 < 0.30 [move-in-bellevue]] if facilities-in-bellevue = 3 [if random-float 1 < 0.50 [move-in-bellevue]] if facilities-in-bellevue = 4 [if random-float 1 < 0.70 [move-in-bellevue]] if facilities-in-bellevue = 5 [if random-float 1 < 0.90 [move-in-bellevue]] end to move-in-bellevue lt random 360 forward 1 if count bellevuers in-radius 1 > 0 [if color = orange [plus-bellevuers-knowledge plus-highlanders-knowledge bellevue-commerce highlands-commerce] if color = black [plus-bellevuers-knowledge] if color = white [plus-bellevuers-knowledge plus-unionists-knowledge bellevue-commerce eastern-union-commerce] if color = yellow [plus-bellevuers-knowledge plus-coldwaterers-knowledge bellevue-commerce coldwaters-commerce]] end to visit-eastern-union if facilities-in-eastern-union = 0 [if random-float 1 < 0.05 [move-in-eastern-union]] if facilities-in-eastern-union = 1 [if random-float 1 < 0.10 [move-in-eastern-union]] if facilities-in-eastern-union = 2 [if random-float 1 < 0.30 [move-in-eastern-union]] if facilities-in-eastern-union = 3 [if random-float 1 < 0.50 [move-in-eastern-union]] if facilities-in-eastern-union = 4 [if random-float 1 < 0.70 [move-in-eastern-union]] if facilities-in-eastern-union = 5 [if random-float 1 < 0.90 [move-in-eastern-union]] end to move-in-eastern-union lt random 360 forward 1 if count unionists in-radius 1 > 0 [if color = orange [plus-unionists-knowledge plus-highlanders-knowledge eastern-union-commerce highlands-commerce] if color = black [plus-unionists-knowledge plus-bellevuers-knowledge eastern-union-commerce bellevue-commerce] if color = white [plus-unionists-knowledge] if color = yellow [plus-unionists-knowledge plus-coldwaterers-knowledge eastern-union-commerce coldwaters-commerce]] end to visit-coldwaters if facilities-in-coldwaters = 0 [if random-float 1 < 0.05 [move-in-coldwaters]] if facilities-in-coldwaters = 1 [if random-float 1 < 0.10 [move-in-coldwaters]] if facilities-in-coldwaters = 2 [if random-float 1 < 0.30 [move-in-coldwaters]] if facilities-in-coldwaters = 3 [if random-float 1 < 0.50 [move-in-coldwaters]] if facilities-in-coldwaters = 4 [if random-float 1 < 0.70 [move-in-coldwaters]] if facilities-in-coldwaters = 5 [if random-float 1 < 0.90 [move-in-coldwaters]] end to move-in-coldwaters lt random 360 forward 1 if count coldwaterers in-radius 1 > 0 [if color = orange [plus-coldwaterers-knowledge plus-highlanders-knowledge coldwaters-commerce highlands-commerce] if color = black [plus-coldwaterers-knowledge plus-bellevuers-knowledge coldwaters-commerce bellevue-commerce] if color = white [plus-coldwaterers-knowledge plus-unionists-knowledge coldwaters-commerce eastern-union-commerce] if color = yellow [plus-coldwaterers-knowledge]] end to plus-highlanders-knowledge set highlanders-tacit-knowledge highlanders-tacit-knowledge + 1 set highlanders-explicit-knowledge highlanders-explicit-knowledge + 4 end to plus-bellevuers-knowledge set bellevuers-tacit-knowledge bellevuers-tacit-knowledge + 1 set bellevuers-explicit-knowledge bellevuers-explicit-knowledge + 4 end to plus-unionists-knowledge set unionists-tacit-knowledge unionists-tacit-knowledge + 1 set unionists-explicit-knowledge unionists-explicit-knowledge + 4 end to plus-coldwaterers-knowledge set coldwaterers-tacit-knowledge coldwaterers-tacit-knowledge + 1 set coldwaterers-explicit-knowledge coldwaterers-explicit-knowledge + 4 end to highlands-commerce set highlands-transaction-number highlands-transaction-number + (highlanders-tacit-knowledge) * 3 + highlanders-explicit-knowledge end to bellevue-commerce set bellevue-transaction-number bellevue-transaction-number + (bellevuers-tacit-knowledge) * 3 + bellevuers-explicit-knowledge end to eastern-union-commerce set eastern-union-transaction-number eastern-union-transaction-number + (unionists-tacit-knowledge) * 3 + unionists-explicit-knowledge end to coldwaters-commerce set coldwaters-transaction-number coldwaters-transaction-number + (coldwaterers-tacit-knowledge) * 3 + coldwaterers-explicit-knowledge end