Читать практическое задание по английскому: "Imitating modelling of a cattle-breeding complex on basis Cedar Bog" Страница 2

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Stage^:=8;

Index^:=1;

END

# Fecundation of MilkCows

WHENEVER (Stage = 8) AND (Index (340)) DO

IF Rand < 0.98 do

MilkCows:Animal[Index].Status^:= TRUE;

MilkCows:Animal[Index].Stelnost^:= 1;

END

ELSE DO

MilkCows^: TO Cows SEND Animal[Index]

CHANGING

Age^:= MilkCows:Animal[Index].Age;

Weight^:= MilkCows:Animal[Index].Weight;

END

END

END

END

END OF Herd 4. Effluent (Drains) in which it is provided annual downcast drains on fields (for fertilizer of pastures). Also sale of drains for the manufacture of mineral fertilizers is possible.DYNAMIC BEHAVIOUR

WHENEVER T >= TNext DO

TNext^:= TNext + 1[d];

IF ((sun > 100[kJ/m^2]) AND (sun < 110[kj/m^2])) and (flag = true)

AND (Dung >= 10000) DO

A^:= 0;

FLAG^:= FALSE;

END

END

WHENEVER (T >= TNext) AND (FLAG = FALSE) DO

IF (sun > 50[kJ/m^2]) AND (sun < 60[kj/m^2]) do

FLAG^:= TRUE;

END

END

END OF Effluent

5. Profit, expenses (profit, expenses), including an economic part of the model. Unfortunately, because of insufficient amount of the information it is designed only in the theory. But further, at the profound studying of the model, it will be created and, I hope, it will work on a level with other components of the model. MOBILE COMPONENT Animal

DECLARATION OF ELEMENTS

STATE VARIABLES

DISCRETE

Age (INTEGER):= 0,

Weight (REAL):= 0,

Status (LOGICAL):= FALSE, # Fecundation / not Fecundation

Stelnost (INTEGER):= 0, # Duration of the pregnancy

Kol_voOtelov (INTEGER):= 0, # Number of calves

MilkYield (REAL):= 0,

Manure (REAL):= 0

END OF Animal The results of modelling with an initial livestock of the cattle - 30 heifers, 10 calves (all animals are about one year):

On the given schedules dynamics of transition of animals from one age groups in others is displayed.

We can see, that at achievement of the certain age heifers (a red line) are divided into two categories: milk cows (a green line) and cows (a blue line). Cows fatten the necessary weight, and then they are slaughtered. Through the certain time interval Milk cows give a gain of the herd and start to be milked.

We can see, that at achievement of the certain age three calves (a red line) become bulls (a blue line), the others remain calves, until they fatten the necessary weight. As soon as it occurs, they are slaughtered.

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