Download Advanced Information Systems Engineering: 9th International by Stefano Ceri, Piero Fraternali (auth.), Antoni Olivé, Joan PDF

By Stefano Ceri, Piero Fraternali (auth.), Antoni Olivé, Joan Antoni Pastor (eds.)

This booklet constitutes the refereed complaints of the ninth overseas convention on complicated info structures Engineering, CAiSE'97, held in Barcelona, Spain, in June 1997. the amount provides 30 revised complete papers chosen from a complete of 112 submissions; additionally incorporated is one invited contribution. The publication is split into topical sections on standards engineering; info platforms layout; tools, environments, and instruments; allotted details structures; and workflow systems.

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Extra info for Advanced Information Systems Engineering: 9th International Conference, CAiSE'97 Barcelona, Catalonia, Spain, June 16–20, 1997 Proceedings

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2 The graph of the position s of a point of a milling machine as a function of time is a straight linc. 2 s) s = 90 fIllIl. 2 S, the di~placement of the point is 111'> = - 180 mm. (a) Detennine the equation for s as a function of time. (b) What is the velocity of the point? 3 The graph of the velocity 11 of a point as a function of time is a straight line. s. eaJ Detennine the acceleration of the point by calculating the slope of the straight line. (b) Obtain the equation for v as a function of time and use it to detcnnine the acceleration of the point.

Ds= '" v(s) l''0 dt The next two examples show how you can analyse the motion of an object when its acceleration is a fanction of velocity or position. 1. 1. Dctcnnining the velocity when you know the acceleration as a function of velocity or position. If you know a - a(v): Separate variables, dv dt - a(v) dv -=dt a(o) or apply the chain rule, dv d1)ds dv . -=--=-v_a(v) dt ds dt ds then separate vaIiables, vdv --=ds a(v) If you know a - a(s): Apply the chain rule, dv dvds dt = J;di dv ·······v ds then separate variables!

10). 4). 7(a)). 7(b)). :eleration and velocity of P and changes in its velocity and position, You can often use these relationships to obtain a qualitative understanding of an object's motion, and]lin some cases you can even use them to determine its motIOn. il , In some situations, lithe acceleration of an object is constant, or nearly constant. For example, if you drop a dense object such as a golf ball or rock and it doesn't fall too fh, you can neglect aerodynamic drag and asstune that its acceleration is equalll to the acceleration of gravity at sea level.

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