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Systems, ESD.00

Lecture 1

Lecturers: Professor Joseph Sussman

.

TA: Regina Clewlow

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Society faces many large-scale problems-- we

call them critical contemporary issues (CCIs)

They arent simply CEE problems or MEy

problems or management problems

,interdisciplinary perspective

They are systemsproblems

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Are we oin to solve these roblems this

semester? Of course not n w iv n h n r

these problems and the kind of approaches

that can lead to answers? Yes, we can

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MobilitEnergy ,

water, land use, habitat preservation)

Urbanization

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Po ulation Growth in developing world Shrinkage in parts of developed world and an

ag ng soc e y n mnay na ons

Economic development/ growth and the

Security (individual and national)

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Sustainable Develo ment-- the 3 Es Economic Development Environmental Protection Social Equity

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Lady Bird Johnson found that in dealing with

highway beautification it was like "picking up atangled skein of wool; all the threads are-

mental health. and the crime rate, and rapid

transit and the war on poverty, andparks....everything leads to something else."

' , ,2007

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Com lexit of man t esSociotechnicalsuggests that systems we

r in r in have important social impacts have a vital technical com onent

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. Core En ineerin S stems Conce ts and

Methods S stem D namics Dealing with Uncertainty Networks

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. Pro ects Air/HSR and the Environment Energy/Water Nexus: Masdar City Internet Governance: The Digital Divide The Stroke Care Chain

Each project

is illustrative of one or more CCI

is a CSSwill use the three core methods and concepts plus

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. Integrative approach Recognize complexity and try to deal with it Engineering approach: we need to make a

decision on what to do, often with informationthat is incomplete and with a future that is

.

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We now introduce a number of CSS

concepts. We will use theBoston/Cambridge transportation systemas a CSS example to illustrate some of the

concepts.

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Our CSS has various

.

might include: the air quality in

Boston/Cambridge,

MIT itself, whose behaviorwill affect the

Boston/Cambridge

when MIT is on springbreak, the loads on thetransportation system are

our CSS affects MIT aswell)

LargerSystem

CSS

LargerSystemBoundary

ParallelSystems

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the commuter rail system which provides

service from the outlying suburbs toBoston/Cambridge (commuter trains provide

the economic system in Boston/Cambridge,clearl affected b the effective deliver ofgoods, the ability of people to get to work orschool and the vibrancy of the economy

transportation system

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The real estate market in

Boston/Cambridge, will relate toaccessibility of a residence to jobopportunities

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CSS

CSSBoundary

subsystemssubsystems

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Subs stems of our CSS include: The highway network The MBTA s stem which would in turn

include vehicles buses and trains, and

the infrastructure needed for the MBTAo opera e w c nc u es e ranetwork, the highway network on whichthe MBTAs buses o erate fare

collection systems, operating staffs

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Travelers who will make a choice of what

mode to use: driving, taking publictransportation of one sort or another,traveling intermodally (bike to the station

and take the train from there)

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- In our CSS do we need to know how an

internal combustion engine works?Probably not. Do we have to know if astreet has bike lanes? Probably. But it

depends upon the questions we want toanswer about our CSS.

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Nonlinearit Feedback Un r in Emergent propertiesThe Teaching Note discusses these and others.

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Youll now hear about the four ro ects we

have designed lets put some meat on thebones!

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MIT OpenCourseWare

http://ocw.mit.edu

ESD.00 Introduction to Engineering SystemsSpring 2011

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