LiveDesign Security Engineering

Prof. Gautam DasguptaColumbia University

LiveDesign Security Engineering

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

Tel:212-854-3102;fax:212-854-6267;email:[email protected]

url:www.columbia.edu/~gd18

Keywords: Intelligent infrastructure, extreme events, sensing and broadcast


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


IT based LiveDesign

LiveDesign prototypes :

I) alert civic authorities for manmade disasters

II) suggest best evacuation/rescue strategies

III) broadcast most favorable routes


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.


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 environment5. Intelligent civil infrastructures (versatile) (a) building, roads, bridges

(b) watersheds(c) energy systems

LiveDesign Research


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


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


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


LiveDesignDataBase

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


LiveDesign


LiveDesignNetwork1. 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


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:


Large number of variables

Conveniently programmed in Mathematica.


Many Extreme Values


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


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


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


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,

LiveDesign Security Engineering

Documents

Transcript of LiveDesign Security Engineering