Prof. Gautam DasguptaColumbia University

LiveDesign Quantification of Subjective Opinion

in Mitigating Effects of Extreme Events

byGautam Dasgupta, Professor, Civil EngineeringColumbia University, New York, NY 10027, USA

What is LiveDesign?

1. Is it a software?

2. Is it a design concept?

3. What is a conventional design?

4. What are new contributions?

Keywords: Intelligent infrastructure, extreme events, sensing and broadcast

Prof. Gautam DasguptaColumbia University

Design vs. LiveDesign

Conventional design and construction:

1. Cost saving

2. Engineering Calculations

LiveDesign

1. Saving human life and minimizing human suffering

2. Optimize performance using subjective experiences

Prof. Gautam DasguptaColumbia University

IT based LiveDesign

LiveDesign prototypes :

1. Aid authorities after natural and manmade disasters

2. Suggest best evacuation and rescue strategies

3. Broadcast most favorable measures

Prof. Gautam DasguptaColumbia University

Statistical decision in LiveDesign

1. High speed large scale computing

2. Collection of subjective opinions

3. Statistics for extreme events

Knowledge is continuously updated

Decision made in real time

Hence the name: LiveDesign.

Prof. Gautam DasguptaColumbia University

1. Background work from 2001(a) engineers(b) architects(c) computer scientists(d) lawyers

2. LiveDesign core methodology3. Randomly selected office building models4. Seamless open environment --- 9/11, Tsunami, Katrina, Bird Flue …..5. Intelligent civil infrastructures (a) building, roads, bridges

(b) watersheds(c) energy systems

6. Natural and manmade disaster modules

LiveDesign Research

Prof. Gautam DasguptaColumbia University

Principal parts of LiveDesign

1. Intelligent information acquisition (a) Engineering response data (numeric) (b) Sensor measurements (digital) (c) Bodies of laws and code requirements (textual) (d) Subjective opinion (imprecise)

2. Statistical combination of above items 3. Virtual reality-based smart signs : (a) evacuation (b) rescue (c) management communication

Prof. Gautam DasguptaColumbia University

Combine:

1. Structural stress analysis: response history

2. Regulations (such as Building Codes)

3. Legal requirements

4. On-line sensor readings

Quantitative and QualitativeInformation in LiveDesign

Prof. Gautam DasguptaColumbia University

1. Predicts threat from

statistical combination

2. Statistical optimization

for the worst fatal state in space and time

3. Calculations with confidence levels

Fuzzy logic in

LiveDesign

Prof. Gautam DasguptaColumbia University

LiveDesignDataBase

1. Dynamic searches

(a) signal fatal events

(b) check tight bounds for credible threats

(c) continuously fine-tune in a self-learning environment

2. Sort out false alarms

3. discover yet to be identified extreme events

4. Simulate threats

(eg. use Keränen’s extremely rare strings)

Prof. Gautam DasguptaColumbia University

Prof. Gautam DasguptaColumbia University

Prof. Gautam DasguptaColumbia University

LiveDesign

Prof. Gautam DasguptaColumbia University

LiveDesignNetwork1. Security costs depend nonlinearly on the associated payoff

2. All indices can be assessed only in the probabilistic sense

3. Computer Algebra (symbolic) calculation:(a) use joint probabilities(b) uses graphical communication language(c) use causality

4. Current modeling procedure is written in Mathematica

5. Mathematical basis is the graph theory

Prof. Gautam DasguptaColumbia University

Elements of the network

1. The network formulation starts with elementary subsystems

2. Modelica can create complex systems using the formal specifications of

the links in the LiveDesign database

3. Benchmark examples have been verified using Mathematica:

Prof. Gautam DasguptaColumbia University

Large number of variables

Conveniently programmed in Mathematica.

Prof. Gautam DasguptaColumbia University

Many Extreme Values

Prof. Gautam DasguptaColumbia University

Chemistry and biology provides good analogies:experiments and theory go together in the ‘organic form of design.’

1. There may be more than a single answer

2. Several outcomes possible with different probabilities

3. The fuzzy logic concepts give optimized answer

Prof. Gautam DasguptaColumbia University

LiveDesign representation conept

1. Architects create the LiveBluePrint2. A collection of its various parts, and then assembled.3. Modern buildings are more complicated:

(a) there are additional subsystems(b) such as power, water, elevators(c) and above all a security infrastructure

Prof. Gautam DasguptaColumbia University

Intelligent Infrastructureby LiveDesign

1. Smart structures respond to their surroundings

Safety: Thermo-mechanical inputs

2. Intelligent infrastructures

(a) Security (Safety concerns as subsets)

(c) Management/Government policy and laws

3. Information based technology

(a) Integration of quantitative and qualitative data

(b) Computer understandable . representation/communications

Prof. Gautam DasguptaColumbia University

The LiveDesign Team

1. Universities(a) Columbia University(b) MIT(c) Carnegie Mellon University(d) University of Maine

2. Industries(a) OKG Constructions, NYC(b) Contour Graphics Architects, NYC(c) Serby Attorneys, NYC

3. Foreign collaborators(a) Kagawa University, Japan

(b) Tokyo Metropolitan University, Japan(c) Paris & Besancon, France; AIT Thailand,