3. Advice on methods and techniques to use such information for pre-disaster physical plan- ning and building, 4. Advice on (inter alia): a) composite risk analysis, and scales of analysis (for example seismic microzonation); b) risk mapping, extrapolating risk information into planning and building recommenda- tions and/or constraints; 5. Advice on: a) UNDRO’s role in the promotion and development of vulnerability analysis techniques, particularly among the U.N. Agencies; b) the training of teams in damage assessment,‘risk evaluation and mitigation in disaster- prone developing countries. The meeting accepted that an important issue was the interface between science and plan- ning. A major objective would therefore be the provision of straightforward, practicable tech- niques for evaluating risk and vulnerability forplanningpurposes. *Composite vulnerability analysis: simultaneous assessment of different natural hazards in a given location expressed as one total (or composite) risk. 4 III. CLASSIFICATION OF CONCEPTS AND TERMS The series of UNDRO studies of current knowledge on Disaster Prevention and Mitigation use the terms natural hazard risk and damage probability, and define vulnerability (or disaster risk), the product of the values of these two terms. (See for example page 4 of Volume 5 on “Land-Use Aspects of Disaster Prevention and Mitigation”). Similar terms are used in a different sense in seismic studies. Thus Mr. Foumier d’Albe of UNESCO in his paper on “Earthquake Prediction and Risk Management *” uses the term risk to denote the possibility or probability of loss, and defines this as the product of seismic hazard, vulnerability and value, vulnerability in this case being a measure of the proportion of the value which may be expected to be lost as the result of a given earthquake. It is clearly desirable to avoid, if possible, such conflicts of nomenclature and to establish a set of terms for use in disaster studies which will be widely understood and accepted. 
**Analysis**
The text appears to be discussing the use of scientific techniques and methods to assess and mitigate the risks associated with natural disasters, such as earthquakes and floods. The focus is on providing practical advice and guidelines for planners and policymakers to reduce the vulnerability of communities to disasters. The text also touches on the importance of establishing a standardized set of terms and concepts to avoid confusion in disaster studies.

**Category**
Humanitarian aid and relief, Science and technology