supernetworks: challenges in the information age
TRANSCRIPT
Supernetworks
Qiong June DongSchool of Business
Funding provided by
• National Science Foundation
• Faculty Enhancement Grant
• Networks are pervasive in our daily livesand essential to the functioning of oursocieties and economics.
Source:http://supernet.som.umass.edu
What is a Supernetwork?A Supernetwork is a network, consisting of
nodes, links, and flows, that is over andabove existing networks.
Challenges
• Decision Making– Centralized vs. Decentralized– More alternatives
• Complexity– Large scale
Competition• Equilibrium vs. Optimization
Nash Equilibrium
Commuting
Telecommuting
Why Telecommuting?
• Reduce traffic congestion• Reduce emissions• Land use• Human resource policy
Telecommuting
• Number of telecommutersincreased from 4 millionto 23.6 million in the pastdecade.
• Recent legislation permitsfederal employees toselect the telecommutingoption
• 72.4% reported thatworking at home slightlyor greatly increasedproductivity
Questions
• Telecommute or Commute?• How often?• What’s the impact on traffic?• What’s the impact on land-use?• What’s the impact on environment?
A Conceptualized Supernetworkof Commuting vs. Telecommuting
Be Aware of Paradoxes
A decrease in demanddemand on a supernetworkwith a zero emission link may result inan increase in emissions.emissions.
Adding a new path which consists solelyof a zero emission link and whichshares no links with any other path mayresult in an increase in emissionsemissions.
What do we see?
• The importance of the incorporationof Network Topology, Cost andDemand Structure, Users Behavior.
• The interconnectivity among distinctnetwork systems
A Supernetwork may have both virtual andphysical links
A Supernetwork may be multitiered andmultilevel.
Decision-makers may have distinct criteriasuch as time, monetary cost, opportunitycost, risk, and/or safety.
Applications of Supernetworks
• Telecommuting / Commuting decisionmaking
• Teleshopping / Shopping decision making• Supply Chain Networks with E-commerce• Financial Networks with Electronic
Transactions
Teleshopping vs. Shopping
Source: http://supernet.som.umass.edu
Supply Chain - TransportationSupernetwork Representation