Prof. Gautam Dasgupta Columbia University LiveDesign Security Engineering by Gautam Dasgupta, Professor, Civil Engineering Columbia University, New York, NY 10027, USA Tel: ;fax: ; url: Keywords: Intelligent infrastructure, extreme events, sensing and broadcast

Prof. Gautam Dasgupta Columbia University Design vs. LiveDesign Conventional design/construction: 1. stresses 2. costs LiveDesign a. mitigating disasters b. detects imminent threats and breach of security c. optimize human decision and performance

Prof. Gautam Dasgupta Columbia University IT based LiveDesign LiveDesign prototypes : I) alert civic authorities for manmade disasters II) suggest best evacuation/rescue strategies III) broadcast most favorable routes

Prof. Gautam Dasgupta Columbia University Statistical decision in LiveDesign Optimized decision process 1. high speed large scale computing 2. distributed computation 3. Statistics for extremevents Knowledge updating is almost instantaneous Hence the name LiveDesign.

Prof. Gautam Dasgupta Columbia University 1. Background work from 2001 (a) engineers (b) architects (c) computer scientists (d) lawyers 2. LiveDesign core methodology 3. Randomly selected office building models 4. Seamless open environment 5. Intelligent civil infrastructures (versatile) (a) building, roads, bridges (b) watersheds (c) energy systems LiveDesign Research

Prof. Gautam Dasgupta Columbia University Three principal parts of LiveDesign 1. Intelligent information acquisition 2. Statistical combination of indicators to construct threat scenarios 3. Virtual reality-based smart signs : a. evacuation b. rescue

Prof. Gautam Dasgupta Columbia University Combine: 1.Structural stress analysis: response history 2. Regulations (such as Building Codes) 3. Legal requirements 4. On-line sensor readings Quantitative and Qualitative Information in LiveDesign

Prof. Gautam Dasgupta Columbia 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 Dasgupta Columbia University LiveDesign DataBase 1. Dynamic searches 1-a. signal fatal events 1-b. check tight bounds for credible threats 2. sort out false alarms 2-a. continuously fine-tune a self-learning process 3. discover yet to be identified extreme events

Prof. Gautam Dasgupta Columbia University

Prof. Gautam Dasgupta Columbia University

Prof. Gautam Dasgupta Columbia University LiveDesign

Prof. Gautam Dasgupta Columbia University LiveDesignNetwork 1.Security costs depend nonlinearly on the associated payoff 2. All indices can be assessed only in the probabilistic sense 3. Computer Algebra 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 Dasgupta Columbia 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 Dasgupta Columbia University Large number of variables Conveniently programmed in Mathematica.

Prof. Gautam Dasgupta Columbia University Many Extreme Values

Prof. Gautam Dasgupta Columbia 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 Dasgupta Columbia University LiveDesign representation conept 1. Architects create the LiveBluePrint 2. 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 Dasgupta Columbia University Intelligent Infrastructure by 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 Dasgupta Columbia 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,