modul de afectare pe retea
English translation: route assignment
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| 18:23 May 17, 2011 |
| Romanian to English translations [PRO] Tech/Engineering - Transport / Transportation / Shipping | |||||||
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|  Selected response from: Cristina Crişan Romania Local time: 00:04 | ||||||
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| 4 +1 | route assignment |
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1 hr confidence: 
peer agreement (net): +1
peer agreement (net): +1route assignment Explanation: pag.37 a documentului afişat la context: 6.2.1.4.Modelul de transport intern pentru persoane Metodologia pentru modelarea transportului intern de persoane trebuie sa fie detaliata, pentru fiecare din urmatoarele etape: - Generare/Atragere - Distributie intre zone - Distributie intre modurile de transport - Afectare pe retea The four steps of the classical urban transportation planning system model are: Trip generation determines the frequency of origins or destinations of trips in each zone by trip purpose, as a function of land uses and household demographics, and other socio-economic factors. Trip distribution matches origins with destinations, often using a gravity model function, equivalent to an entropy maximizing model. Older models include the fratar model. Mode choice computes the proportion of trips between each origin and destination that use a particular transportation mode. (This modal model may be of the logit form, developed by Nobel Prize winner Daniel McFadden.) Route assignment allocates trips between an origin and destination by a particular mode to a route. Often (for highway route assignment) Wardrop's principle of user equilibrium is applied (equivalent to a Nash equilibrium), wherein each driver (or group) chooses the shortest (travel time) path, subject to every other driver doing the same. The difficulty is that travel times are a function of demand, while demand is a function of travel time, the so-called bi-level problem. Another approach is to use the Stackelberg competition model, where users ("followers") respond to the actions of a "leader", in this case for example a traffic manager. This leader anticipates on the response of the followers. Route assignment, route choice, or traffic assignment concerns the selection of routes (alternative called paths) between origins and destinations in transportation networks. It is the fourth step in the conventional transportation forecasting model, following trip generation, trip distribution, and mode choice. -------------------------------------------------- Note added at 1 hr (2011-05-17 19:31:43 GMT) -------------------------------------------------- Eventual route assignment model. -------------------------------------------------- Note added at 11 hrs (2011-05-18 05:38:49 GMT) -------------------------------------------------- A AFECTÁ1 ~éz tranz. (sume de bani, bunuri materiale) A destina unui scop anumit; a aloca; a asigna. /<fr. affecter http://dexonline.ro/definitie/afectare -------------------------------------------------- Note added at 22 hrs (2011-05-18 16:28:47 GMT) -------------------------------------------------- Cu plăcere! Reference: http://en.wikipedia.org/wiki/Transportation_forecasting Reference: http://en.wikipedia.org/wiki/Route_assignment |
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