What is Impact? Lessons Learnt from 20 th Century Science & Engineering. Arun Majumdar Stanford University
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1 What is Impact? Lessons Learnt from 20 th Century Science & Engineering Arun Majumdar Stanford University
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3 High Career Success Well known for successful research programs More papers First review paper Become Dept. Chair, Dean or ARPA-E Director Low Born First scientific paper Time Speak about What is Impact?
4 Is Impact Measured By Papers & Citations: h-index Awards & honors New fields started Patents issued & licensed Market value of business(es) Students, post-docs & their students/postdocs..
5 J. E. Hirsch, An index to quantify an individual's scientific research output, PNAS 102, (2005) Cited: 4,141 For the few scientists who earn a Nobel prize, the impact and relevance of their research is unquestionable. Among the rest of us, how does one quantify the cumulative impact and relevance of an individual's scientific research output? In a world of limited resources, such quantification (even if potentially distasteful) is often needed for evaluation and comparison purposes (e.g., for university faculty recruitment and advancement, award of grants, etc.). h = mn n = # of active years m 1 successful scientist m 2 outstanding scientist m 3 or higher truly unique individuals
6 Physics Nobels 2005 NAS Members Physics & Astronomy: <h>=44, σ h =14, h max =71, h min =20 Biological Sciences: <h>=57, σ h =22, h max =135, h min =18 J Bardeen, WH Brattain, The Transistor, A Semiconductor Triode, Phys. Rev. 74, 230 (1948) Cited: 762 J Bardeen, L Cooper, JR Schrieffer, Theory of Superconductivity, Phys. Rev. 108, 1175 (1957) Cited: 9,703 <h> = 44; σ h = 15 <m> = 1.14; σ m = 0.47 F. Sanger, The free amino acid groups of insulin, Biochemical J. 39, 507 (1945) Cited: 1,813 F. Sanger, S. Nicklen, A. R. Coulson, DNA sequencing with chain-terminating inhibitors, PNAS 74, 5463 (1977) Cited: 62,767
7 S. Brin, L. Page, The anatomy of a large-scale hypertextual Web search engine, Computer Networks and ISDN Systems 30, 107 (1998) Cited: 11,327 Google Market Cap
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9 Is Impact Measured By Papers & Citations: h-index Awards & honors New fields started Patents issued & licensed Market value of business(es) Students, post-docs & their students/postdocs..
10 What was the most important engineering innovation of the 20 th century?
11 Airplanes Polio Vaccination Electrification Nuclear Energy Space Transistor & Integrated Circuits Fiber Optic & Wireless Communication Internet
12 Elements of Life Sir William Crookes President, British Association for the Advancement of Science Amino Acid C H O N Atmospheric CO 2 via photosynthesis Water Atmosphere?
13 Guano Islands
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15 War of the Pacific ( )
16 Guano Island Act of 1856
17 Chilean Saltpeter
18 Atmospheric Nitrogen Ammonia Sir William Crookes President, British Association for the Advancement of Science Nitrate
19 N 2 + 3H 2 = 2NH 3 Discovery 1908 Catalysts: Uranium, Osmium Pressure: 10 atmospheres Fritz Haber (Chemistry Nobel, 1918) Carl Bosch (Chemistry Nobel, 1931) Affordable Mass 1913
20 1.6 billion (1913) 7 billion (2013) Nitrogen fixed by the Haber-Bosch process is within each of us in this room
21 Is Impact Measured By Papers & Citations: h-index Awards & honors New fields started Patents issued & licensed Market value of business(es) Students, post-docs & their students/postdocs.. It is all about people, now and in the future
22 How can we positively impact maximum number of people now and in the future?
23 World Population 16B 10B Now 3B Increase in the next 50 years will be more than twice the population of China Less developed countries will account for 99% of increment in world population 7B 6B
24 China India Indonesia USA Brazil Nigeria
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27 Human Development Index(HDI) versus Annual Per Capita Electricity Use HDI = f(life Expectancy, Education, Income)
28 What is our Haber-Bosch like challenge? Rate of CO 2 Emissions 2007 Equilibrium Between Atmospheric and Ocean CO 2 Hoffert et al., Nature (1998)
29 What is our Haber-Bosch like challenge?
30 (In)Famous Predictions from the Past Radio has no future X-rays will prove to be a hoax. Heavier-than-air flying machines are impossible Lord Kelvin in 1890s
31 (In)Famous Predictions from the Past Man will not fly for 50 years. Wilbur Wright in 1901
32 Any sufficiently advanced technology is indistinguishable from magic. Arthur C. Clarke
33 Thank you!
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