Daniel Jonsson
Document Sample


Daniel Jonsson
Swedish Defence Research Agency
Dep. of Energy and Environmental Security
Royal Inst. of Techn., KTH
Dep. of Built Environment Analysis
Dep. of Environmental Strategies Reseach – fms
A Systems Perspective on Infrastructure
(infrastructure system = infrasystem)
1) System characteristics – a technical
perspective
2) System development – a socio-technical
perspective
3) What are infrasystems delivering? – a
service perspective
Systems?
Peter Checkland 1999: Lars Ingelstam 2002:
• Designed physical • Machines
systems • Organisms
• Designed abstract • Social systems
systems • Socio-technical systems
• Human activity systems • NTS-systems
• Natural systems (Nature–Technology–Society)
Systems?
Systems are defined by boundaries,
demarcating a certain system from the
surroundings. The system consists of
components and relations, forming
some sort of entirety.
Basic functions of infrasystems
• transport (of people and goods)
• water and sewage
• energy
• waste
• communication (of information)
Overview
Infrasystems
Users /
technical consumers
components
environment
economy
households
deliver organisations
institutions social
issues enterprises
services buildings
society
legal
prerequisites political
trends
socio-technical
aspects
Technical components
Infrasystem architecture
Nodes
...where certain functions, or processes, are performed on
the flow or where the flow is produced or consumed
• Origin nodes: power plants, water works, television and radio stations,
refuse chutes, WCs
• Destination nodes: wall sockets, water taps, TVs and radios, landfills,
sewage treatment plants
• Process nodes: power transformers, supporting water pumps, TV
satellites, waste assortment facilities, telephone exchanges, train
switches
• Multi-purpose nodes: train stations, on-line computers, waste
incineration plants
Links
...what is generally referred to as ‘infrastructure’
• Visible: roads, pipes, cables, rails
• Invisible: air corridors, radio links, navigation channels
• Exclusive: water pipes, oil and gas pipelines, subways, electric cables
• Non-exclusive: roads, rails
Networks
• Point-shaped: shipping, air traffic (only accessible at ports and airports)
• Line-shaped: roads, power mains, telephones
• Surface-shaped: radio, TV, mobile phone networks
• Grid-based: electricity, water, district heating, railways (visible links)
• Non-grid-based: shipping, air transport, radio, TV (invisible links)
• Specific: electricity, water, telephone (exclusive grid-based)
• Existing: postal services, food distribution, non-grid-based energy
systems
• Natural: waterways, air, „on the air‟ (natural broadcasting media)
(Arne Kaijser 1994)
Flows
Some perspectives on infrasystem flow:
• Basic function: energy, water, waste, information
• Constituent parts: electrons, photons, water molecules, bikes, cars,
lorries, food scraps, cans, mail items, people, goods
• Continuous flows: water, electricity, district heating, gas
• Discrete flows: mail delivery, public transport, waste removal
(when the demand is too small for continuous operation)
Infrasystems are socio-technical
systems
Infrasystems should not only be treated as sets of
technical components – they also include the people and
organisations that plan, build, run and use the systems,
and the economic and legal conditions for the activities.
(Arne Kaijser 1991; 1994)
From a socio-technical perspective, infrastructure should
be understood as a seamless web of technical,
economic, institutional, social and political aspects.
(Thomas P. Hughes 1983, Guy and Marvin 2001)
Socio-technical revolutions
– an example
First public railway: Stockton – Darlington, 1825
Organised as traditional canal traffic:
1) bring your own vehicle
2) pay the fee
3) have a nice trip!
result => congestion, low profits, general chaos
...example (cont.)
Second public railway: Liverpool – Manchester, 1830
A brand new organisational set-up, and ownership relations:
1) check the time-tables
2) pay for the ticket / goods fee
3) have a nice trip!
result => smooth operation, economies of scale
Evolution of infrasystems
?
?
Invention Technology System growth Momentum Decrease in momentum
transfer
Establishing phase Expansion phase Stagnation phase
Establishing phase
The phase of inventors, entrepreneurs,
risk capitalists, and large important,
potential consumers or interested parties
Actor networks
Expansion phase
... is characterised by common confidence in the system
and its future growth
• system culture: a common view upon what is rational
and desirable
• momentum: the systematic interaction of people, ideas,
technology and institutions, leads to the development of
a socio-technical force – with movement and direction
• inertia: it is hard to decide on something that is not in line
with the current system culture
• load factors
Load factors (expansion phase)
load factor = the ratio of average output to the maximum
output during a certain period
High load factors, but also smooth load curves, are
desirable
“The load factor is, probably, the major explanation for
the growth of capital-intensive technological systems in
capitalistic, interest-calculating societies” (Hughes 1989)
Stagnation phase
• momentum decreases
• market saturates
• competition from new systems
• environmental problems
=> steady-state, or decline
Overview
Infrasystems
Users /
technical consumers
components
environment
economy
households
deliver organisations
institutions social
issues enterprises
services buildings
society
legal
prerequisites political
trends
socio-technical
aspects
The Nature of Infrasystem Services
Infrasystems deliver service, or have
service in readiness, in order to produce
utilities or conveniences, fulfilling the
needs of individuals, households,
enterprises and organisations.
Some perspectives on service,
utilities, conveniences, and needs
• Practical services, to sustain a comfortable
living, e.g. personal hygiene and indoor climate
• Symbolical services, social or demonstrative,
supporting a certain life-style, e.g. large
expensive vehicles
• Aesthetical services, conveying feelings of well-
being to individuals, e.g. design details of
buildings, interiors and equipments or taking a
hot bath not primarily to get clean but for the
pleasure
(Örjan Svane 1999)
A metabolic perspective
• To nourish, which embraces all processes and goods to
produce and consume food.
• To clean, including all processes to maintain human
health, e.g. personal hygiene and sewage treatment.
• To reside and work, which comprises all processes set
up to erect and maintain the built environment, also
including, for example, recreation facilities and furniture.
• To transport and communicate, which embraces all
processes involving transportation of people and
material and exchange of information.
(Baccini and Brunner 1991)
Needs of Maslow (1954)
1. physiological (e.g. food, water),
2. safety (e.g. shelter, support oneself),
3. belongingness (e.g. friends, family),
4. self-esteem (sense of self-identity and
appreciation from other), and
5. self-actualization (sense of self-purpose
and to be able to transform interest and
wishes into practice).
infrasystem
Needs
(household perspective)
service • Personal hygiene & health
• Food & drink
• Indoor climate
• Indoor hygiene
utility, or • Making a living
convenience • Personal improvement & recreation
• Public services
need
Infrasystem Infrasystem service Utility, or convenience Need
(example) (example)
Water system Drinking water Cooking Food & drink
Water system Taking a shower Clean body Personal hygiene & health
Sewer system Removal Sewage treatment Public services
Waste system Removal No garbage in the house Indoor hygiene
Transport systems Mail services Social interaction Personal improvement &
recreation
Road system Private motoring Getting to work Making a living
Rail system Freight transports Distribution of food Food & drink
Electricity system Electricity Vacuum-cleaning Indoor hygiene
District heating Heat Heating Indoor climate
system
The Internet Access to remote Education Personal improvement &
locations recreation
What‟s the point of it?
• Approaching services and utilities, rather
than technology and systems, might help
us finding other ways – perhaps more
environmental friendly – to fulfil our needs.
• Key words: substitutions, synergies
daniel.jonsson@foi.se
Jonsson (2000), Sustainable Infrasystem Synergies: A Conceptual
Framework, Journal of Urban Technology, Vol. 7, No. 3, pp. 81-104
Jonsson (2005), The Nature of Infrasystem Services, Journal of
Infrastructure Systems, Vol. 11, Issue 1, pp. 2-8
Get documents about "